Inventors list

Assignees list

Classification tree browser

Top 100 Inventors

Top 100 Assignees


Based upon a particular signal quality measurement

Subclass of:

370 - Multiplex communications

370310000 - COMMUNICATION OVER FREE SPACE

370328000 - Having a plurality of contiguous regions served by respective fixed stations

370329000 - Channel assignment

370331000 - Hand-off control

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
370334000 Using multiple antennas at a station 10
370333000 Signal quality determined by bit error rate 8
Entries
DocumentTitleDate
20110182272APPLICATION-LAYER HANDOFF OF AN ACCESS TERMINAL FROM A FIRST SYSTEM OF AN ACCESS NETWORK TO A SECOND SYSTEM OF THE ACCESS NETWORK DURING A COMMUNICATION SESSION WITHIN A WIRELESS COMMUNICATIONS SYSTEM - Embodiments are directed to an application-layer handoff of an access terminal from a first system of an access network to a second system of the access network during a communication session within a wireless communications system. In an embodiment, the access terminal sets up a communication session on the first system. A multimedia client measures application-layer performance parameters for the communication session supported by the first system, and determines whether to handoff the communication session to a second system based at least in part on the application-layer performance parameters. If the multimedia client determines to handoff the communication session to the second system, the multimedia client initiates the handoff and the communication session is transitioned to the second system.07-28-2011
20110206012HANDOVER METHOD AND APPARATUS FOR PROVIDING MOBILE IPTV SERVICE OVER HETEROGENEOUS WIRELESS COMMUNICATION NETWORKS - Disclosed herein is a handover method and apparatus for providing mobile Internet Protocol Television (IPTV) service over wireless communication networks. The handover method includes checking whether the strength of a signal received from a first base station of a serving first wireless network falls within a predetermined first threshold range; if the strength of the signal falls within the range, checking whether the strength of a signal received from at least one base station of a second wireless network is higher than a second threshold value required for handover; estimating the velocity and direction of a Mobile Node (MN) using location information received from a satellite; predicting a handover target base station using the estimated velocity and estimated location information; and, if the predicted target base station is one of base stations having the second threshold value, performing handover to the target base station.08-25-2011
20090196259METHOD AND APPARATUS FOR SERVING HIGH SPEED DOWNLINK SHARED CHANNEL CELL CHANGE - A method and apparatus for serving high speed downlink shared channel (HS-DSCH) cell change are disclosed. A wireless transmit/receive unit (WTRU) sends a measurement report to a radio network controller (RNC) when a signal strength of a target cell approaches a signal strength of a source cell. The RNC adds the target cell in an active set and sends pre-loaded HS-DSCH configuration information for the target cell to the WTRU. The WTRU sends another measurement report when a signal strength of the target cell exceeds that of the source cell. The WTRU monitors a high speed shared control channel (HS-SCCH) on the target cell based on the pre-loaded HS-DSCH configuration information and decodes an HS-SCCH transmission. The WTRU determines whether a MAC-hs/ehs reset is required and if so resets a MAC-hs/ehs entity prior to receiving an HS-DSCH transmission from the target cell.08-06-2009
20100080192CELL TIMING ACQUISITION IN A W-CDMA HARD HANDOVER - Cell timing is detected by first trying to detect a target handover cell through detecting a primary synchronization channel (P-SCH) followed by a common pilot channel (CPICH). If that fails, N number of retrials is performed using a full-window search on the CPICH. The full-window CPICH search is performed blindly, without any slot timing information from the P-SCH. Performance is improved while maintaining the benefits of faster acquisition methods in good channel conditions. The full-window search is more time consuming, but takes advantage of the stronger CPICH transmission. In good channel conditions, a mobile device can proceed quickly with the normal method of timing acquisition. With failure, the mobile device can switch to the longer search which has a higher probability of successfully completing the hard handover procedure. The overall effect is a higher success rate of hard handovers without a uniform increase of time spent in cell timing acquisition.04-01-2010
20130039345APPARATUS AND METHOD FOR ADAPTIVE BEAM-FORMING IN WIRELESS COMMUNICATION SYSTEM - Apparatuses and methods for maintaining an optimal beam direction in a wireless communication system are provided. The method for operating a receiving node in a wireless communication system includes, determining a first transmission beam is determined as a preferred transmission beam using a plurality of reference signals transmitted by a transmitting node, generating preferred transmission beam information, transmitting the preferred transmission beam information to the transmitting node, receiving transmissions from the transmitting node via the first transmission beam, and determining whether a change of a transmission beam is necessary. When the change of the transmission beam is determined to be necessary, generating a beam change request and transmitting the beam change request to the transmitting node.02-14-2013
20100046478METHOD AND SYSTEM FOR PERFORMING A HANDOFF IN A WIRELESS COMMUNICATION SYSTEM, SUCH AS A HARD HANDOFF - A method for minimizing search time and disruption of current service on an originating frequency during a frequency search excursion to a target frequency as part of an inter-frequency hard handoff between cells on different RF CDMA channels. Disruption of service on the current frequency during the frequency search excursion to the target frequency is minimized by increasing the amount of power allocated to other symbols of two consecutive frames impacted by the search excursion as a function of the search excursion time. The mobile station tunes to a target frequency and collects chip samples, which are stored in a memory buffer. The mobile station returns to the originating frequency to process the collected samples.02-25-2010
20100046477Method for Hand-Over In A Heterogeneous Wireless Network - In a heterogeneous network handover situation, a mobile terminal (02-25-2010
201001110431XRTT AND HRPD NEIGHBOR LIST SUPPORT OVER LTE - Devices and methods are provided for supporting single carrier Radio Transmission Technology (1×RTT) and High Rate Packet Data (HRPD) neighbor lists over LTE, thereby enabling efficient scans for 3GPP2 neighbors with minimal interruption to the LTE operations both when idle or when in-traffic. In one embodiment, the method may involve accessing a neighbor list, each neighboring system in the list being prioritized based at least in part on whether the access terminal (AT) supports a hybrid mode. For example, the method may involve selecting the 3GPP2 system to handin to based at least in part on the neighbor list.05-06-2010
20090154425METHODS AND APPARATUS FOR MAKING HANDOFF DECISIONS IN ACCESS TERMINALS CAPABLE OF OPERATING AT DIFFERENT TIMES IN BEST EFFORT AND QoS MODES OF TRAFFIC OPERATION - Methods and apparatus for making handoff decisions in an access terminal which can support both best effort and QoS traffic, e.g., when operating in a best effort and QoS mode of operation, respectively, are described. The access terminal receives an indicator indicating the fraction of communications resources not utilized for QoS service and information indicating a number of best effort users being supported by the attachment point. During QoS mode operation, connections to attachment points which can support the access terminal's minimal QoS requirements are identified and then from among the identified set, the attachment point which can provide a connect supporting the most best effort traffic from the access terminal is selected. In best effort mode operation the access terminal selects the attachment point connection which will provide the greatest amount of throughput to the access terminal for best effort traffic.06-18-2009
20100040026Communications network extension via the spontaneous generation of new cells - The invention is a cellphone base station transceiver capable of spontaneously and substantially automatically creating a new cell in a communication network. This new cell provides an indiviual-Point-Of-Connect, which will be referred to as iPOC, for cell phone users that address many of these and other problems. The iPOC system, methods, devices, and computer programs provides wireless standard cell phone communication in areas where no cell phone service exists or within dead zones in existing cell phone network cells. Various embodiments of the iPOC include a portable, substantially-automated, user-installable dynamically-configurable cell phone base station device.02-18-2010
20100091739METHODS AND SYSTEMS FOR PRE-ALLOCATING A CQI CHANNEL DURING HANDOFF - Methods and systems for improving handover performance by pre-negotiating channel quality information between a serving base station and a target base before a handoff is initiated in a wireless communication system are described. The target base station may send to the serving base station an assigned location within an uplink subframe for a mobile station requesting a handover to the target base station to transmit channel quality information to the target base station. The serving base station may send this information to the mobile station. The mobile station may transmit channel quality information to the target base station at the assigned location.04-15-2010
20100067492Wireless Communication Terminal, Communication Control Method of Wireless Communication Terminal, and Wireless Communication System - A wireless communication terminal, a wireless communication terminal communication control method, and wireless communication system for efficiently acquiring a communication system when a call occurs even when the terminal is judged out of service area. When a communication system selecting section (03-18-2010
20130089076LOCAL / REMOTE IP TRAFFIC ACCESS AND SELECTIVE IP TRAFFIC OFFLOAD SERVICE CONTINUITY - Disclosed herein are systems and methods for handling closed subscriber group (CSG) based local/remote IP traffic offload and selective IP traffic offload. According to an aspect, a method may be implemented at user equipment (UE). The method may include determining that a service to the UE requires a predetermined quality of service (QoS). The method may also include selecting a gateway from among a plurality of gateways in response to determining that the service to the UE requires the predetermined QoS.04-11-2013
20130089077SMALL CELLS IMPLEMENTING MULTIPLE AIR INTERFACES - A communication networks including a plurality of small cell providing air interface infrastructure functionality is provided. Aspects of the present disclosure relate to the management of inter-small cell communication in accordance multiple air interfaces supported within individual small cells. Additionally, aspects of the present disclosure relate to the management of intra-small cell communication in accordance with communication networks implementing multiple small cells. In other aspects, small cells coordinate handovers through the use of a controller, or by leveraging wireless connections created between the small cells. In further aspects, the small cells enable the utilization of multiple air interface standards within a small cell.04-11-2013
20090092100METHOD FOR OPERATING FRAME IN MOBILE COMMUNICATION SYSTEM AND SYSTEM THEREOF - An apparatus and method for indicating a zone by a base station in a mobile communication system, in which a frame consists of an uplink sub-frame and a downlink sub-frame, and each of the uplink and downlink sub-frames includes a plurality of zones, are provided. The method includes identifying at least one of a channel condition of a mobile station, a condition on whether or not the mobile station supports inter-heterogeneous-network communication, a load condition of the base station, and a resource condition of a cell, determining if the mobile station can transmit/receive a signal through a number of zones that is less than the total number of zones based on the at least one identified condition and transmitting control information, which indicates a zone capable of being used for signal transmission/reception by the mobile station, to the mobile station, when the mobile station can transmit/receive the signal through the number of zones.04-09-2009
20100061343Scenario Based Measurement Type Selection - Techniques are provided to obviate unnecessarily requesting that different types of measurements are simultaneously made by a user equipment unit (03-11-2010
20110013600METHOD OF TRANSMITTING DATA FOR REDUCING INTERFERENCE IN HIERARCHICAL CELL STRUCTURE - A method of transmitting data for reducing interference in a hierarchical cell structure including a macro base station (BS) providing multi carriers and a femto BS providing a single carrier includes performing a channel scan within an interfered carrier to acquire channel state information and neighbor femto BS information if interference with the femto BS occurs; transmitting a channel measurement report including the channel state information and the neighbor femto BS information to the macro BS; and transmitting data through a carrier changed by receiving carrier change information from the macro BS.01-20-2011
20110013599Threshold-less mobile-driven handoff method for cellular systems using unlicensed spectrum - In wireless networks where multiple base stations are deployed, handsets may handoff from one base station to the other while in a voice call. In this disclosure a layer-2 hand-off mechanism for cellular systems designed to operate in unlicensed spectrum is described. More specifically a proposed method that does not use any pre-determined thresholds to initiate the hand-offs is disclosed.01-20-2011
20090268691HANDOVER PROCESSING METHOD, AND ACCESS POINT AND MOBILE TERMINAL FOR USE IN THE METHOD - A technology is disclosed for providing a handover processing method, and an access point and a mobile terminal used in the method, in which the handover processing method can prevent processing of a HO in a layer 2 and an HO in a layer 3 from occurring at same time simultaneously, and shorten waiting time caused by the HO. The technology includes a step of providing, by the access point, strength information held by the access point itself, the strength information that is information whether to promote a handover processing in the layer 3 or not to promote the handover processing in the layer 3, and a step of receiving, by the mobile node, the provided strength information, deciding whether to perform the handover in the layer 3 based on the received strength information, and performing the handover processing in the layer 3 based on the decision.10-29-2009
20090268690NEIGHBORING CELL SIGNAL MEASUREMENT AND REPORTING - Example embodiments of methods and apparatus for neighboring cell signal measurement and reporting are disclosed. An example method includes operating a first wireless communication cell in accordance with a first radio access technology (RAT). The example method further includes transmitting, to one or more mobile devices in the first wireless communication cell, information regarding one or more neighboring wireless communication cells. The one or more neighboring wireless communication cells are operated in accordance with a second RAT. The example method also includes establishing an active communication channel in the first wireless communication cell with a mobile device of the one or more mobile devices. The example method still further includes receiving capability information of the mobile device, the capability information including an indication if the mobile device is compatible with the second RAT. The example method additionally includes, in the event the mobile device is compatible with the second RAT, providing instructions to the mobile device regarding whether or not to provide measurement reports for signals received from the one or more neighboring cells.10-29-2009
20130064226Handover in Heterogeneous Wireless Networks - A first base station in a network initiates handover of a wireless device in connected mode to a second base station. The first base station and the second base station have substantially different transmit powers. The first base station initiates a handover employing a first criterion, if the wireless device is in an active call from a first call category with the first base station. The first base station initiates a handover using a second criterion, if the wireless device is not in an active call from a first call category with the first base station.03-14-2013
20110007713MOBILE COMMUNICATION DEVICE AND MOBILE COMMUNICATION METHOD - Disclosed are a mobile communication device and mobile communication method which make it possible to reduce the amount of the data transfer during heterogeneous network handover processing in the hard handover processing in a mobile network. The mobile communication device which is equipped with a plurality of kinds of radio communication interfaces, receives a request to perform the handover between heterogeneous networks, which requests switching from a radio communication interface in use to another radio communication interface from the mobile communication network, and performs the handover between the heterogeneous networks comprises a measurement processing section (01-13-2011
20110007712METHODS AND SYSTEMS FOR EFFECTIVE HANDOVER BETWEEN BASE STATIONS - This application includes signaling techniques for performing scanning and handover of a mobile station between a base station and a Femto base station in a wireless communication system.01-13-2011
20130163565METHOD FOR COMMUNICATION BASED ON MOBILE ACCESS POINT IN RADIO COMMUNICATION SYSTEM AND APPARATUS FOR THE SAME - A communication method based on an access point (AP) in a radio communication system is provided. The method includes: acquiring positional information regarding at least one station (STA) and at least one adjacent AP; acquiring interference information from the at least one adjacent AP; determining whether to move based on the positional information and the interference information; determining a position to move based on the positional information and the interference information when determining to move; moving to the position to move; and providing communication services to a subscribed STA at the position.06-27-2013
20090232099Method of arranging data transfer in a wireless telecommunication system - A method of arranging data transfer in a wireless telecommunication system comprising at least one wireless terminal, a first radio access gateway and a first base station connected thereto, a second radio access gateway and a second base station connected thereto. The first base station and the first radio access gateway are arranged to transmit data between the terminal and an end point in an IP-based network. Address information on the second radio access gateway is specified to the first radio access gateway when it is detected that handover from the first base station to the second base station is needed for the terminal. Data directed to the terminal is transmitted through the first radio access gateway and the second radio access gateway to a wireless network after the terminal has been handed over to the second base station. The address information on the second radio access gateway is transmitted to the end point in the IP network and the data directed to the terminal is transmitted from the end point to the second radio access gateway.09-17-2009
20090232098METHOD AND SYSTEM FOR PERFORMING A HANDOFF IN A WIRELESS COMMUNICATION SYSTEM - A system for maintaining wireless communication with a plurality of base stations in a communication network is disclosed. A portable terminal having a communication unit is configured to measure signal strength of a transmission signal for neighboring base stations in a frequency band being used by the communication unit, and create a first handoff candidate list in which one or more handoff candidates in a same frequency band are recorded. A handoff using the first handoff candidate list is performed by the portable terminal. Thereafter, the portable terminal measures signal strength of one or more base stations included in a second handoff candidate list. The result of the signal strength measurements are reported to the currently communicating base station, and a handoff is performed based on a response to the report at the portable terminal.09-17-2009
20090046665Capacity Optimisation in a Cellular Wireless Network - Embodiments of the invention relate to cellular wireless networks and are particularly suited to networks including different types of base stations. So-called femtocell base stations are typically deployed within a subscriber's premises and operate at low transmit power, providing a very limited area of wireless coverage. A femtocell is typically deployed within the area of wireless coverage of a conventional macrocell type of base station, and if handover from a macrocell is performed on the basis of the best signal to noise plus interference ratio, a connection is likely to be transferred to another macrocell rather than to a femtocell. However, in view of the low density of user equipments capable of transceiving with a femtocell, the femtocell could potentially provide a greater data rate to the user equipment terminal than is possible with a macrocell. A cellular wireless network according to an embodiment of the invention employs a method of handover algorithm that has dependence on both a measure of signal quality such as signal to noise plus interference ratio and on a measure of loading of the base station. The handover algorithm is thereby able to weight selection of a base station on the basis of data rate, and intelligently engineer handover to a femtocell.02-19-2009
20090296660METHOD, GENERIC ACCESS NETWORK CONTROLLER AND TERMINAL FOR DUAL TRANSFER MODE HANDOVER - A Dual Transfer Method (DTM) handover method is provided. The provided method creates a user data link applicable to both the CS domain and PS domain for the terminal, and handles the handover procedure of the CS domain and PS domain related to the same terminal, thus enhancing the network capability and QoS. A Generic Access Network Controller (GANC) and a user terminal are also provided. Consistent with the provided method, GANC, and user terminal, a mobile terminal that performs the CS domain service and PS domain service concurrently may roam freely on a radio CN through different access technologies, thus improving the mobility and service experience of the users.12-03-2009
20100085942Communication Control Apparatus and Communication Control Method - There is provided a base station having a resource assigning unit for assigning QoS resources in response to a QoS setting request and a resource securing unit for securing, when a wireless communication terminal that is communicating with a base station by setting a QoS specifies the own base station as a handoff candidate base station, QoS resources by correlating to the wireless communication terminal. The resource assigning unit assigns, in the case where there are no QoS resources available when assigning QoS resources in response to the QoS setting request, the QoS resources that have been secured by the resource securing unit by correlating to the wireless communication terminal to a wireless communication terminal that has transmitted the QoS setting request.04-08-2010
20110019648METHOD FOR SWITCHING RADIO RESOURCE CONTROL STATE, BASE STATION, AND USER EQUIPMENT - The present invention provides: a method for switching an RRC state; an eNB; and a UE. The eNB (01-27-2011
20120236831METHOD FOR CONSERVING RESOURCES DURING WIRELESS HANDOVER OF A DUAL MODE MOBILE STATION - A method is described that is for handing over a multi-mode mobile device from a first network technology to a second network technology. The method includes initiating by the multi-mode mobile device a first packet session in a first wireless network and detecting by a multi-mode mobile device a second wireless network supporting a different access network technology. The method also includes determining a Quality of Service requirement and completing pre-registration session establishment procedures for a second session in the second wireless network when the first session includes at least one of a QoS sensitive service and real time service by the first wireless network and mobile device and after completion of the pre-registration session establishment procedures the multi-mode mobile device receives service from the first wireless network and remains dormant on the second wireless network.09-20-2012
20130163564Method And Apparatus For Serving High Speed Downlink Shared Channel Cell Change - A method and apparatus for serving high speed downlink shared channel (HS-DSCH) cell change are disclosed. A wireless transmit/receive unit (WTRU) sends a measurement report to a radio network controller (RNC) when a signal strength of a target cell approaches a signal strength of a source cell. The RNC adds the target cell in an active set and sends pre-loaded HS-DSCH configuration information for the target cell to the WTRU. The WTRU sends another measurement report when a signal strength of the target cell exceeds that of the source cell. The WTRU monitors a high speed shared control channel (HS-SCCH) on the target cell based on the pre-loaded HS-DSCH configuration information and decodes an HS-SCCH transmission. The WTRU determines whether a MAC-hs/ehs reset is required and if so resets a MAC-hs/ehs entity prior to receiving an HS-DSCH transmission from the target cell.06-27-2013
20130163566APPARATUS AND METHOD FOR OPERATING CO-SITE IN MOBILE COMMUNICATION SYSTEM - Provided is a method for operating a co-site by a Base Station (BS) in a mobile communication system. The method includes determining a first number of Mobile Stations (MSs) among MSs connected to a cell to perform handover to a co-site using an Air Resource (AR) utilization of the cell that uses a first Frequency Reuse Pattern (FRP) and an AR utilization of the co-site that uses a second FRP, or determining a second number of MSs among MSs connected to the co-site to perform handover to the cell; and sending a handover initiation message to the MSs according to the determinations.06-27-2013
20110142008APPARATUS AND METHOD FOR PERFORMING HANDOVER IN ADVANCED MOBILE COMMUNICATION SYSTEM - An apparatus for performing handover in an advanced mobile communication system which provides traffic service to a mobile terminal in a multiple cell environment, the apparatus includes: a handover control unit for recognizing cell determination parameters based on terminal status information collected from the mobile terminal and/or information on traffic provided to the mobile terminal; a handover determination unit for assigning predetermined weights to each of the cell determination parameters when handover is required; a cell selection control unit for determining importance of each of the cell determination parameters based on the assigned weights and generating cell selection information for selecting a candidate cell for handover, which is the most optimal for the cell determination parameters in the order of the importance, among cells adjacent to a serving cell to which the mobile terminal belongs; and a handover execution unit for executing the handover based on the cell selection information.06-16-2011
20090086680MULTI-DETECTION OF HEARTBEAT TO REDUCE ERROR PROBABILITY - A communications system improves performance of detecting a signal having an indication of a request to change communications states by making at least two positive identifications of the request in a given time frame. The system may further improve performance by applying a difference in power levels for a non-request state (i.e., steady state or ‘control hold’ state) versus a request state (i.e., ‘request to change’ state). In one particular application, a base station determines a request to change communications states with a reasonably high probability of detection and a reasonably low probability of false detection. The system has a reduced number of erroneous communications states, such as erroneous traffic channel allocations. The detection technique is compatible with 1×EV-DV systems and I-CDMA systems, but general enough to support systems employing various other communications protocols used in wired and wireless communications systems.04-02-2009
20100202413Circuit Switched Fallback Mechanism - Circuit Switched Fallback Mechanism There is provided a method and apparatus for handling a Circuit Switched fallback mechanism for a terminal attached to a Packet Switched cell in a radio access network. A request is received at a node in the radio access network to establish a Circuit Switched session with the terminal whilst the terminal has an ongoing Packet Switched session. At the node, a target cell that is capable of handling a Circuit Switched session is selected from a plurality of target cells to which the terminal may attach. A Packet Switched handover is performed to the selected cell, and the Circuit Switched session is also handled in the selected cell.08-12-2010
20110292914INTERNETWORKING OF CELLULAR RADIO NETWORKS AND WIRELESS DATA NETWORKS - The invention provides a method, to be used by a network node, for assisting a handover of a data session from a first routing path, associated with a first access network, to an alternative routing path, associated with an alternative access network, wherein data is routed over said first access network to a UT by binding a session identifier to a first routing identifier, wherein said session identifier and said first routing identifier are defined in accordance with a standard protocol routing scheme of said first access network, the method comprising the following steps: 12-01-2011
20090190558METHOD AND APPARATUS FOR LINK ADAPTATION BY STOCHASTICALLY SELECTING A TRANSMIT PARAMETER - A method and apparatus for link adaptation is provided. A node stores a set of transmit parameters and corresponding selection probabilities for each of the transmit parameters. The node stochastically selects a particular transmit parameter based on the selection probabilities, and then transmits a packet according to the particular selected transmit parameter. From received transmission feedback information, the node derives performance statistics, and uses the performance statistics to specify an estimated performance function for the particular transmit parameter. The node updates a selection probability computation function (SPCF), and uses the SPCF to generate updated selection probabilities corresponding to each transmit parameter in the set of available transmit parameters.07-30-2009
20090196258SWITCHING OF AN INFRASTRUCTURE-LESS NETWORK TO A FIXED-INFRASTRUCTURE NETWORK - A communication session between a first terminal and a second terminal is switched from a first network with no fixed infrastructure to a second network with a fixed infrastructure upon degradation on a first transmission channel between the terminals in the first network. In each terminal, a controller detects a degradation on the first transmission channel and stores the latest data received from the other terminal. An interface transmits an invitation message including connection parameters relative to a second transmission channel to the other terminal via one of the networks if the degradation is estimated as permanent. The second transmission channel from the other terminal is established through the second network so that the terminals are connected via the second network to thereby continue the communication session depending on the stored latest received data.08-06-2009
20090316659Identifying Multi-Component Carrier Cells - Methods and apparatus for generating and determining multi-component carrier cells, without the use of neighbor-cell lists, are described. Methods for generating and informing a communication system terminal about other component carriers belonging to a certain cell identity (ID), and methods and apparatus for a mobile terminal utilizing extended synchronization information for doing multi-component carrier cell search are described. Also, methods for multi-component carrier measurements and methods of reporting such measurements to a network are described.12-24-2009
20090154426HANDOVER BASED ON A QUALITY OF SERVICE METRIC OBTAINED FROM A MAC LAYER OF A RECEIVED SIGNAL - A wireless communication unit comprises a receiver operably coupled to a signal processing function arranged to make a hand-over determination based on a communication signal received from a serving communication station. The signal processing function is arranged to perform a hand-over operation based on at least one quality of service metric(s) obtained from a medium access control layer of a received signal.06-18-2009
20100124204METHOD AND APPARATUS FOR IMPROVING UNBALANCE OF SERVICE OF CELL EDGE IN WIRELESS LOCAL AREA NETWORK - A method and apparatus for improving unbalance of service at a cell edge in a Wireless Local Area Network (WLAN). A method of an Access Point (AP) for improving unbalance at service of a cell edge in a WLAN includes monitoring for a continuous decrease of a signal strength of a station over a predefined duration, determining if the station is to handover, when the continuous decrease of the signal strength occurs, and decreasing a transmit power of the AP, when it is determined that the corresponding station is to handover.05-20-2010
20100128698Communication Terminal Device, Communication System and Method of Selecting Base Station Thereof - To provide a method of selecting an optimal base station for each application when accumulating communication quality in response to an application type for a base station and a communication terminal switches base stations. A communication quality database 05-27-2010
20090310568Seamless Handover and Load Balance Between Macro Base Stations and Publicly Accessible Femto Base Stations - The teachings of the present disclosure relate to seamless handover between macro base stations and publicly accessible femto base stations that includes scheduling a null period in a femto base station's communications activity. The method also includes monitoring mobile station activity during the null period at the femto base station. A candidate mobile station is identified based on the monitoring. An identifier of the candidate mobile station is transmitted from the femto base station to a macro base station. The identifier may be used to initiate handover of service of the candidate mobile station from the macro base station to the femto base station.12-17-2009
20090310569System And Method For Balancing Communication Traffic Loading Between Adjacent Base Stations In A Mobile Communications Network - A wireless communication device stores a traffic indicator received from an adjacent base station. The device measures a received signal strength indicator, RSSI, from the adjacent base station. An adjusted signal strength indicator, RSSI-ADJ, for the adjacent base station is calculated as a function of the adjacent base station's RSSI and the stored traffic indicator. A traffic indicator is received from a current base station. A received signal strength indicator, RSSI, is measured for the current base station. An adjusted signal strength indicator, RSSI-ADJ, for the current base station is calculated from the current base station's RSSI and the received traffic indicator. The communication device roams from the current base station to the adjacent base station based on a comparison of the adjacent base station's RSSI-ADJ to the current base station's RSSI-ADJ.12-17-2009
20100098029METHOD, BASE STATION AND RELAY STATION FOR SUPPORTING MOBILE STATION RANGING - A method for supporting MS ranging is provided in an embodiment of the present invention. The method includes: determining the public frame that is to be used for allocating the dedicated initial ranging transmission opportunity information; and notifying the MS of information about the determined public frame to potential target RSs. A BS and an RS are provided in embodiments of the present invention. This invention helps determine a public frame that is to be used for allocating the dedicated initial ranging transmission opportunity information for an MS in an MR radio telecommunication system, when the potential target BSs of the MS include RSs.04-22-2010
20100080193MOBILE WIRELESS TERMINAL, WIRELESS MODULE, HANDOVER METHOD, AND RECORDING MEDIUM - Provided is a mobile wireless terminal connected to a base station via wireless, including: a storage section which stores and holds a plurality of handover execution threshold values used for execution of handover processing of changing connection in a wireless communication network; a service suspension period identifying section which identifies a service suspension period occurring at a time of the handover processing; a handover execution threshold value selecting section which selects, based on a value of the service suspension period identified by the service suspension period identifying section, one handover execution threshold value among the plurality of handover execution threshold values stored in the storage section; and a control section which executes the handover processing based on the one handover execution threshold value selected by the handover execution threshold value selecting section and a received radio signal.04-01-2010
20100085941METHODS AND APPARATUS FOR SCANNING FOR NEIGHBOR BASE STATIONS IN TIME SYNCHRONOUS WIRELESS COMMUNICATION SYSTEMS - A method for scanning for neighbor base stations in a time synchronous wireless communication system may be implemented by a mobile station. The method may include detecting a serving base station preamble index that is transmitted by a serving base station in a subcarrier subset during a frame. The method may also include using the detected serving base station preamble index to determine a signal quality measurement for the serving base station. The method may also include detecting at least one neighbor base station preamble index that is transmitted by a neighbor base station in another subcarrier subset transmitted during the same frame. The method may further include using the detected neighbor base station preamble index to determine a signal quality measurement for the neighbor base station.04-08-2010
20090207812DUAL RADIO HANDOVERS BEWEEN WIMAX AND 3GPP - A method of switching a device from a source network to a target network, the source network being one of a WiMAX network and a 3GPP network and the target network being another of the WiMAX network and the 3GPP network, may include receiving information from the device about the source network and about the target network. The information received from the device may be monitored to determine whether parameters of the source network have crossed a handoff threshold. The information received from the device also may be monitored to determine whether parameters of the target network are suitable for handoff. The method may also include instructing the device to perform a handover of communications to a radio associated with the target network based on the parameters of the source network, the parameters of the target network, and a handoff policy.08-20-2009
20090207811FREQUENCY QUALITY CRITERIA FOR INTER-FREQUENCY HANDOVER IN A TD-CDMA COMMUNICATION SYSTEM - A method for determining whether to perform handover of a UE apparatus to a candidate cell and carrier frequency of a TD-CDMA telecommunications network (such as a TD-SCDMA network) based separately on coverage and capacity, using one decision metric for coverage (e.g. based on received signal code power for the candidate cell and carrier frequency) and a different decision metric for capacity (e.g. based on a quantity proportional to the received signal code power for the candidate cell and carrier frequency and inversely proportional to a measure of total interference in the candidate cell on the carrier frequency. Corresponding equipment and a computer program product are also provided. In deciding whether handover is needed based on capacity, a threshold for received signal code power may be used in addition to the metric for capacity.08-20-2009
20090086681DEVICE AND METHOD FOR MAINTAINING A COMMUNICATION SESSION DURING A NETWORK TRANSITION - Provided are a device and method for maintaining a communication session during a network transition. In one example, the method includes monitoring, by a client, a connection with a first network to determine whether a signal strength of the connection falls below a threshold value. The client establishes a connection with a second network if the signal strength of the connection with the first network falls below the threshold value. Establishing the connection with the second network includes obtaining an address and port assignment corresponding to the client from the second network. The client uses the obtained address and port assignment to maintain a communication session during the changeover from the first network to the second network.04-02-2009
20110026494WIRELESS COMMUNICATION APPARATUS AND COMMUNICATION APPARATUS - In order to perform handover from a first wireless communication network to a second wireless communication network, when it is determined to start preparing for handover from the first wireless communication network to the second wireless communication network, data are transmitted via the first wireless communication network and simultaneously accumulated for a predetermined period. The accumulated data are transmitted via the second wireless communication network after handover. It thus enables to transmit the data in the predetermined period, which are expected to be lost because of handover, while accumulating the data and to transmit accumulated data after handover. Thereby, it is possible to provide a wireless communication apparatus and a communication apparatus capable of performing handover to a different wireless communication network without causing packet loss and thus maintaining stable reproduction quality and real-time property all the time.02-03-2011
20110026493NOTIFICATION OF CHANGE OF CELL INFORMATION - The present invention disclose a method for notifying the change of cell information, which comprises: a first base station sends a serving cell change message to a second base station, wherein the serving cell change message carries one or more of the following information: cell adding information, cell deleting information, cell modifying information; in response to the serving cell change message, the second base station updates local information according to the information carried in the serving cell change message. With the present invention, the neighboring cell list may be updated in time, the management of the neighboring cell list performed by the base station is facilitated, and the switching strategy is optimized.02-03-2011
20090285184Wireless communication system and mobile terminal - The mobile station has a monitor for monitoring the communication qualities of plural wireless interfaces and selecting one of the wireless interfaces to communicate, and a memory for storing the correspondence between the address unique to the selected wireless interface and the network address unique to the mobile station. The mobile station notifies the gateway of the correspondence. The mobile station supplies power to a not operating wireless interface at constant intervals and during a constant time to monitor the communication quality.11-19-2009
20090201884QUALITY OF SERVICE CONTINUITY - Systems and methodologies are described that facilitate supporting Quality of Service (QoS) continuity during an inter-base station mobility procedure. Layer 2 (L2) protocol configuration information for QoS (e.g., uplink, downlink, . . . ) and/or uplink QoS configuration information set by a source base station can be transmitted via an interface (e.g., X2 interface, . . . ) to a target base station during an inter-base station mobility procedure. Further, the target base station can select whether to reuse at least a portion of the L2 protocol configuration information for QoS and/or uplink QoS configuration information received from the source base station. Moreover, L2 protocol configuration information for QoS and/or uplink QoS configuration information not selected to be reused can be reconstructed.08-13-2009
20090262707METHOD, NETWORK SYSTEM AND DESTINATION NETWORK FOR TRANSMITTING QoS DURING A HANDOVER PROCESS BETWEEN SYSTEMS - A method for transmitting quality of service (QoS) during a handover process between systems and a network system and a destination network thereof are provided, which enable the QoS to be transmitted to a second access network during a handover process of a user equipment (UE) between systems. The method comprises: a mobility management network element of the second network acquires QoS of a UE during a handover process of the UE from a first network to a second network; and the mobility management network element of the second network transmits the acquired QoS to the access network of the second network and/or a user plane network element.10-22-2009
20090279507COMMUNICATION DEVICE AND HANDOVER METHOD - A communication device can perform handover in accordance with a traffic type. In a non-real time communication, it is possible to prevent loss of packet data. In a real time communication, a handover can be rapidly performed without causing a delay. In this device, a handover control unit (11-12-2009
20090168727METHODS AND APPARATUS FOR SELECTING OR RESELECTING A HOME NODE-B (CLOSED SUBSCRIBER GROUP (CSG) CELL) AMONG CELLS HAVING COLLIDING PHYSICAL LAYER SIGNALS - A method and apparatus for selecting or reselecting a home Node-B (HNB), (i.e., a closed subscriber group (CSG) cell), among cells having colliding physical layer signals are disclosed. Once the identity (ID) of an HNB is determined, measurements needed to support cell selection or reselection are performed. A broadcast channel that broadcasts an HNB ID is detected and synchronized to, and information obtained from the broadcast channel is forwarded to a non-access stratum (NAS). The broadcasted HNB ID is checked against an HNB white-list provided by the NAS to determine whether the HNB is suitable for a wireless transmit/receive unit (WTRU). The WTRU selects the HNB to camp on, or changes from a cell currently serving the WTRU to the HNB if it is determined to be more suitable than the current serving cell.07-02-2009
20100111042MOBILITY MECHANISMS FOR HOME CELLULAR NETWORK - A communication system comprises a communication network including a computer processor operating a network management system and a femtocell network management system. The communication system further comprises a broadband base station providing a first service signal and creating a mapping table configured to include at least one unique identifier of a mobile client device and a base station providing a second service signal and receiving the mapping table from the broadband base station. A computer processor in the communication system is configured to determine a link quality of a mobile client device service signal received by the broadband base station, the contents of the mapping table, and the unique identifier of the mobile client device to determine whether the broadband base station will provide the first service signal to the mobile client device or whether the base station will provide the second service signal to the mobile client device.05-06-2010
20110200014METHOD AND APPARATUS FOR DELIVERING MEASUREMENT RESULT INFORMATION IN MOBILE COMMUNICATION SYSTEM - A method and apparatus for efficiently delivering measurement result information in a mobile communication system are disclosed. In an aspect of the present invention, a method for performing, by a serving base station, a handover operation in a mobile communication system, includes receiving a measurement report including a measurement result of at least one cell from a user equipment, determining handover based on the received measurement report, and upon determination of handover, transmitting a handover request message to a target base station, wherein the handover request message includes the measurement result of the at least one cell.08-18-2011
20110206013CONTROL STATION, MOBILE STATION, MOBILE COMMUNICATION SYSTEM AND MOBILE COMMUNICATION METHOD - When performing a handover from an access network B to an access network A, a UE 08-25-2011
20090003284Call Admission Control in an Ad Hoc Network - A wireless node (n01-01-2009
20080240043METHOD FOR PERFORMING HANDOVER BY CONSIDERING QUALITY OF SERVICE IN BROADBAND MOBILE COMMUNICATION SYSTEM AND SYSTEM FOR PROVIDING THE SAME - A system and method for performing a handover of a mobile station (MS) by considering Quality of Service (QoS) in a broadband mobile communication system. The method can include the steps of: receiving information about one or more neighbor base stations and reception strengths for the neighbor base stations from a Serving Radio Access System (RAS) currently communicating with the MS; extracting a value of a specific field from the received information about the neighbor base stations; combining the extracted value of the specific field with the reception strengths to thereby obtain combined values, and selecting a maximum value among the combined values; and transmitting a handover (handoff) request message to a base station corresponding to the selected maximum value. The system includes an MS that analyzes information about neighbor stations received in a Mobile Neighbor Base-station Advertisement (MOB_NBR_ADV) message to select a target RAS.10-02-2008
20090168726ENHANCED CONFIGURATION AND HANDOFF SCHEME FOR FEMTO SYSTEMS - The enhanced configuration and handoff scheme leverages the configuration of the Femto system, the Femto access network conditions and the mobile device conditions to facilitate an attractive user-experience. In an embodiment the invention is based on the use of the access network conditions, IP (Internet Protocol) multimedia service QoS constraints, and the user profile for an enhanced configuration and handoff scheme, in a multimode Femto system.07-02-2009
20090097454Apparatus and method for estimating cell load in wireless communication system - An apparatus and method for estimating a cell load in a wireless communication system are provided. The apparatus includes a ranging response counter, a load estimator, an FA handover determiner, a data rate determiner, and a handover determiner. The ranging response counter counts the number of ranging response messages that are received during one period of periodic ranging. The load estimator estimates a cell load on the basis of the number of the ranging response messages. The FA handover determiner determines an FA handover on the basis of the cell load from the load estimator. The data rate determiner controls a data rate of a service on the basis of the cell load from the load estimator and requests the controlled data rate to the system. The handover determiner controls handover parameters on the basis of the cell load from the load estimator.04-16-2009
20080273501Control Unit and Method for Controlling the Load in a Mobile Telecommunications Network - A method and control nodes for controlling load-based handover in a mobile telecommunications network is proposed and at least one logical control node for controlling resources in said cell and at least one logical service node for controlling quality of service, wherein said logical service node comprises terminal instruction means for instructing a mobile terminal communicating with said at least first base station to perform a handover, comprising the steps of—determining, in the CRNC, if the load in the cell exceeds a first threshold, —selecting, in the CRNC, a mobile terminal that should be moved to another carrier if the load in the cell exceeds the first threshold, and—instructing, from the CRNC, the SRNC to instruct the at least one mobile terminal to perform a handover.11-06-2008
20080279153FACILITATING MOBILITY BETWEEN MULTIPLE COMMUNICATION NETWORKS - Various embodiments are described to enable improved inter-network/inter-technology handover of mobile devices. A network device (11-13-2008
20080212537Data Packet Handover Control - A method of and apparatus for packet data streaming handover between disparate wireless and wired end-user agents may address changes in circumstances surrounding packet communications between end-user agents connected over various communications networks. The end-user agents may be coupled to at least one handover controller. One or more handover controllers may be used to implement handovers, which may be based on quality signals received from end-user agents.09-04-2008
20110007714WIRELESS COMMUNICATION APPARATUS - In order to perform handover from a first wireless communication network to a second wireless communication network, a handover control unit obtains a handover preparation time Tb to handover, respective delay times Tddn01-13-2011
20100142486METHOD AND ARRANGEMENT FOR PROCESSING MOBILE STATION HISTORY INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - Methods and apparatus for processing mobile station transaction information at a serving control node in a wireless communication system are disclosed. The serving control node may be a base station, such as an eNodeB in an LTE/SAE wireless communication system. The transaction information, which may include, for example, mobility-related transaction information and traffic-related transaction information for a given mobile station, may be passed between controlling control nodes as the corresponding mobile station is handed over, so that a controlling control node has access to information characterizing the past activities of the mobile station. This information may be used in some embodiments for selecting a target control node for handover or for allocating link resources.06-10-2010
20100142489METHODS AND APPARATUS FOR PROVIDING A HANDOVER CONTROL SYSTEM ASSOCIATED WITH A WIRELESS COMMUNICATION NETWORK - Embodiments of methods and apparatus for providing a handover control system associated with a wireless communication network are generally described herein. Other embodiments may be described and claimed.06-10-2010
20100142487Apparatus and method for inter-rat measurement in a multi mode terminal station - A mobile terminal includes an apparatus configured to perform a method for inter-Radio Access Technology (RAT) measurement. When a measurement condition is satisfied, the apparatus turns on, at an operating module, a standby module and generates a time latch signal to the standby module at a time T06-10-2010
20090180444Method and Apparatus for Maintaining Communications Connections Over a Distributed Wireless Network - A mobile wireless device connects to a network of multiple wireless transceiver stations using a protocol in which a connection is established with a particular transceiver station. If the mobile device moves out of range of the original station, the connection is passed to another station, which then impersonates the original station, without dropping the connection. Preferably, the original station provides a virtual Media Access Control (MAC) address to identify itself when the connection is established, and this virtual MAC address is passed to any successor station. Preferably, the station monitors signal strength and automatically passes the connection by polling its neighbors upon determining that signal strength is getting weak.07-16-2009
20120195290MOBILE COMMUNICATION DEVICE AND METHOD FOR PERFORMING RADIO LINK PERFORMANCE MEASUREMENTS - According to one embodiment, a mobile communication device is provided comprising a determiner configured to determine at least one of a geographical position of the mobile communication device within a first mobile radio cell in which the mobile communication device is located and a movement direction of the mobile communication device; a selector configured to select, based on at least one of the determined geographical position and the determined movement direction, from a plurality of second mobile radio cells at least one second mobile radio cell for a radio link performance measurement (RLPM); and a measuring circuit configured to measure the performance of a radio link between the mobile communication device and a base station operating the at least one selected second mobile radio cell.08-02-2012
20100142488METHOD, DEVICE AND SYSTEM OF HANDOVER - A handover method includes an evolved mobile switching centre (eMSC) that receives a relocation request from a first network and forwards the relocation request to a second network requesting the second network to establish its own media plane association. The eMSC establishes a media plane association with the second network. The eMSC instructs a user equipment (UE) to access the second network. With the handover method, the UE may be handed over between different networks by using the eMSC. A method for reattaching a UE to the eMSC is also provided so that the UE can be reattached to a target eMSC when the eMSC to which the UE is attached is changed. A handover apparatus and a handover system are also provided.06-10-2010
20090180445HIGH-SPEED QoS HANDOVER METHOD AND PROCESSING NODE USED IN THE METHOD - A technology is disclosed that can provide a high-speed QoS handover method and a processing node used in the method, in which a QoS path reconfigured before a handover becomes as optimal a QoS path as possible after the handover, thereby reducing load of route reconfiguration of the QoS path performed after the handover, shortening a segment of QoS path setting performed immediately after the handover, and minimizing a QoS interruption time. The technology includes a step at which a mobile node 10 transmits a first signaling for configuring a predetermined QoS path to a processing node that performs a predetermined process for reducing a load of a modification process for a QoS path after a handover, and a step at which the processing node that receives the first signaling generates a second signaling for performing a QoS setting of the predetermined QoS path based on the received first signaling and transmits the generated second signaling to a predetermined correspondence partner that performs the QoS setting of the predetermined QoS path.07-16-2009
20090141689TUNE-AWAY PROTOCOLS FOR WIRELESS SYSTEMS - Systems and methods are provided for processing wireless signal components for a mobile wireless access broadband service. This can include processes for defining a protocol that controls whether to invoke a tune away component to determine an alternative wireless communications path. This can include defining one or more tune away parameters for the tune away component. The process can then automatically select the alternative wireless communications path based in part on the tune away procedure and at least one of the tune away parameters.06-04-2009
20110142010SYSTEM FOR MANAGING SERVICES OF WiMAX BASE STATIONS - A system that incorporates teachings of the present disclosure may include, for example, a base station having a wireless transceiver operable in compliance with a Worldwide Interoperability for Microwave Access protocol, and a controller to manage the wireless transceiver. The controller can be operable to receive a request from a communication device to access the base station, and to direct the communication device to a second base station upon determining that granting wireless access to the communication device reduces an operating performance of the base station below an operating threshold of the base station. Additional embodiments are disclosed.06-16-2011
20110142009ANCHOR CARRIER SELECTION IN MULTI-CARRIER WIRELESS NETWORK - Mechanism to receive control signals transmitted from a base station (06-16-2011
20090207813METHODS AND DEVICES FOR DETERMINING IF A HANDOVER HAS TO BE EXECUTED FOR A TERMINAL - The present invention concerns a method for determining, in a wireless cellular telecommunication network, if a handover of a half-duplex terminal has to be executed from a first base station to a second base station, the half-duplex terminal not transferring and not receiving signals during a period of time, called an idle period. The first base station: 08-20-2009
20090219894METHOD OF SELECTING TARGET NETWORK FOR HAND-OVER AND METHOD THEREOF - A conventional handover method is performed in units of base stations, so that there is a problem in that a large amount of power for handover is consumed and implementation cost is high.09-03-2009
20090219892METHOD FOR PROCESSING HANDOFF - Provided is a handoff processing method including measuring a moving speed of a mobile terminal; measuring a size of a data packet generated in an application layer; measuring quality of a data transmission channel of the mobile terminal; calculating a maximum handoff delay time based on a relation between the moving speed and the data packet's size; estimating a handoff occurrence time point, based on a relation between a variation of the quality of the data transmission channel and the quality of the data transmission channel; and calculating a packet size and a moving speed of the mobile terminal that can minimize a delay due to a handoff occurrence by taking account of a handoff delay time according to the size of the data packet generated in the application layer and a moving speed of the mobile terminal into consideration, and providing the calculated packet size and moving speed.09-03-2009
20090219891Method and Apparatus for Increasing Efficiency of Data Packet Transmission - An apparatus and method for increasing efficiency of data packet transmission comprising receiving a TCA message and a new pilot signal; determining if the TCA message includes at least one scheduler tag; performing one of the following: determining if there are other pilot signals associated with the at least one scheduler tag or determining if the new pilot signal is in a softer handoff with a member of an active set; and performing one of the following: associating the new pilot signal to the at least one scheduler tag or creating a new scheduler group and associating the new pilot signal with it. In one aspect, one of the following additional steps is performed: determining if all the other pilot signals are newly added to the at least one scheduler tag or determining if at least one of the other pilot signals is associated with the active set.09-03-2009
20090219893Method and Apparatus for Soft Handover Area Detection Using Inter-Band Measurements - A method and system for soft handover area detection for uplink interference avoidance that includes a network device and mobile device in a communications network. A trigger criteria threshold is determined for the mobile device. The mobile device is using a downlink carrier. If a trigger criteria has risen above or fallen below the trigger criteria threshold, inter-frequency measurements of co-sited cells are performed and compared to determine if a soft handover area exists. Co-sited cells are searched for downlink carriers and reselection is initiated from the downlink carrier to a co-sited cell downlink carrier if the co-sited cell downlink carrier is useable by the mobile device. Reselection is initiated from the downlink carrier to a non co-sited cell downlink carrier if no co-sited cell downlink carrier useable by the mobile device is found. The system provides for reselection while uplink carrier interference is avoided.09-03-2009
20090245207System and method to improve uplink coverage in multi-carrier systems - A method of uplink carrier handoff in a multiple carrier communication system may include receiving a measurement report from a mobile providing information regarding path loss as measured at the mobile for one of the multiple carriers on the downlink. A serving carrier may be the carrier over which the mobile communicates on the uplink. An instruction may be selectively sent to the mobile to handoff to a non-serving one of the multiple carriers depending on whether a threshold requirement has been met. The meeting of the threshold requirement may be based on the received measurement report and the serving carrier of the mobile. Each of the multiple carriers may have an associated threshold requirement.10-01-2009
20100265918METHOD AND APPARATUS FOR AVOIDING INTERFERENCE FROM CLOSED SUBSCRIBER GROUP CELLS - Methods and apparatus are disclosed for avoiding interference from transmissions coming from a home Node B, a home evolved Node B (HeNB) or closed subscriber group (CSG) cells when a wireless transmit receive unit (WTRU) is moving through a dense deployment of CSG cells.10-21-2010
20080259875Sleep Scheduling for Geographically Distributed Network Nodes - Techniques for implementing sleep scheduling in a distributed network environment are described. The sleep scheduling attempts to optimize routing of communication among nodes of the distributed network, while still conserving energy by allowing nodes to occasionally transition to sleep mode. The sleep scheduling is performed as a function of the number of awake neighboring nodes.10-23-2008
20100265919Resource Release Method, Communication Equipment, and Network System - A method for releasing resources includes obtaining trigger information; determining to release an allocated high-speed random access channel (HS-RACH) resource according to the obtained trigger information; and releasing the allocated HS-RACH resource at the local end.10-21-2010
20100150112MOBILE TERMINAL AND METHOD OF MOVING NETWORK THEREOF - A mobile terminal and method of moving network thereof are disclosed. The mobile terminal includes a first communication module configured to set a link with a first network, to receive second network-associated information from the first network, and to output the received second network-associated information, a second communication module configured to set a receive-only mode with respect to the second network, to receive signal strength information of one or more neighbor cells belonging to the second network from the second network using the second network-associated information output from the first communication module, and to output the received signal strength information and a controller configured to control a signal input/output operation between the first and second communication modules and a signal transmission/reception operation between the first communication module and the first network, and the second communication module and the second network, respectively.06-17-2010
20100157949Wireless Base Station And Control Method Thereof - For processing an uplink signal from a mobile station without desiring a high AFC capability in any state, in a wireless base station including a plurality of antennas, reception signals from a mobile station are taken in to perform a signal transmission and reception with the mobile station by a first antenna providing a higher reception signal level, in which a switchover from a signal transmission to the mobile station by the first antenna to that by a second antenna is performed when a frequency variation characteristic measured for an allocated frequency of the reception signal from the first antenna indicates that the mobile station is moving away from the first antenna.06-24-2010
20100157948METHOD OF USING A: MOBILE UNIT TO DETERMINE WHETHER TO COMMENCE HANDOVER - A method of using a mobile unit in a multi-cell communication system to determine whether to commence handover of the mobile unit from a serving base station located in a first cell of the communication system to a target base station located in a second cell of the communication system. The mobile unit determines the serving base station received signal code power (RSCP06-24-2010
20100260147System and Method for Supporting Handovers Between Different Radio Access Technologies of a Wireless Communications System - A system and method for supporting handovers between different radio access technologies is provided. A method for communications device operations includes sending a request to a controller of the communications device to change an operating mode of the communications device, and receiving a transmission responsive to the request. The method also includes in response to determining that the controller has granted the request to change the operating mode and that the communications device is operating in a border cell, changing the operating mode of the communications device, tuning at least one receiver of the communications device to an alternate radio access technology (RAT), and initiating a handover with the alternate RAT.10-14-2010
20090316660METHOD, SYSTEM, AND APPARATUS FOR HANDOVER AMONGST PLURALITY OF COMMUNICATION NETWORKS - A method, system, and apparatus for enabling handover of a Mobile Station (MS) amongst a plurality of communication networks is provided. The MS operates in one or more communication networks of the plurality of communication networks using an Internet Protocol (IP) session. The method includes communicating one or more network parameters amongst the plurality of communication networks. The method further includes creating one or more datapath parameters based on one or more of the one or more network parameters. The method further includes altering one or more protocol stack parameters in the MS. Altering the one or more protocol stack parameters maintains the IP session operating the MS in the one or more communication networks.12-24-2009
20090109930Method for supporting quality of service in heterogeneous networks - A method is related to support a QoS service at a handed over network in heterogeneous networks. A serving network requests the mobile terminal to offer demand QoS information, when there is a need of handover. The mobile terminal sends a response message containing the demand QoS information to the serving network, and each candidate network maps the demand QoS information to its network resources to judge whether or not to support the QoS service. And the serving network determines one of the candidate networks that can support the QoS service depending on the judgment of the candidate networks, and provides information on the determined candidate network to the mobile terminal such that the mobile terminal is handed over to the determined candidate network.04-30-2009
20090109929MEDIA ACCESS METHOD PERFORMED BY READER IN DENSE READER ENVIRONMENT - Provided are a media access method and a reader for performing the media access method in a dense reader environment. The media access method divides an air time between the reader and a tag into a plurality of time slots, and operates in each of the plurality of time slots by using a listen before talking (LBT) technique. The plurality of time slots form a frame. Thus, the media access method can control the reader by performing channel scheduling between each of a plurality of readers and can efficiently recognize tags.04-30-2009
20090316661RADIO TERMINAL, RADIO BASE STATION AND RADIO COMMUNICATION METHOD - Disclosed is a radio terminal including: a message transmitter-receiver configured to transmit and receive an IEEE 802.21 message using a protocol of a layer lower than an IP layer to and from a target radio base station for handover before an IP address acquisition unit acquires a new IP address; and a quality measurement unit configured to measure a radio communication quality including at least one of transmission delay and jitter in a radio communication path between the radio terminal and the target radio base station by using the IEEE 802.21 message transmitted and received by the message transmitter-receiver.12-24-2009
20090116454COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND HANDOVER METHOD - Provided is a communication device capable of reducing the network resource and the processing load of a network host. A handover destination performs unicast of packet data reporting an address of the handover destination to an upper-node device and the upper-node device reports release of connection with a communication terminal device to the handover origin. In this device, a handover control unit (05-07-2009
20100226339Performance Management of Mobile Intelligent Roaming Using Mobility Detail Records - Techniques are provided herein to improve the manageability of handover performance of multi-mode wireless client devices when roaming between a wireless local area network (WLAN) and at least one other network. Signals are received at a plurality of WLAN access points from multi-mode wireless client devices. The WLAN access points generate handover data associated with handover events of wireless Voice-Over Internet Protocol (VoIP) communication sessions for the multi-mode wireless client devices between the wireless local area network and at least one other network. The WLAN access points also generate link quality data representing status and quality of a wireless link with multi-mode wireless client devices during a VoIP communication session. A controller that is provided that is configured to receive the handover data and link quality data for multi-mode wireless client devices from the plurality of access points. The controller aggregates the handover data and link quality data for a VoIP communication session for a multi-mode wireless client device into a mobility detail record and stores the mobility detail record together with an identifier of an associated call detail record.09-09-2010
20100254352METHOD FOR SUPPORTING CONTINUOUS RECEPTION OF EVOLVED BROADCAST AND MULTICAST SERVICE DATA - The method for supporting continuous reception of enhanced broadcast service data comprising steps of: an MCE receiving an “MBMS Session Start Request” message from a core network; after the MCE receives the message, transmitting a response message to the core network; MCE transmitting an “MBMS Session Start Request” message to an ENB, the message including information of adjacent cells; and the ENB broadcasting the information of adjacent cells on a current cells. With the scheme of present invention, if a user wants to move to a common cell when he/she receives MBMS service in an SFN edge cell, he/she can enter the active mode and switch into the common cell so as to reduce MBMS data loss. When a UE moves from a cell with SC-PTM transmission mode into a cell with SC-PTM transmission mode, data loss can also be reduced.10-07-2010
20100226340CONTROLLING INTERFERENCE IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for controlling interference in a wireless communication system includes a first step of performing 09-09-2010
20120127960METHOD FOR HANDING OVER A TERMINAL DURING A NON STEADY VOIP CALL, NETWORK ELEMENT, DEVICE AND SYSTEM - The present invention provides a method for handing over a terminal from a packet switching domain to a circuit switching domain during a non steady state of a call, a network element managing service centralization and continuity, an access device, a network element managing mobility of a terminal, as well as a communication system at least comprising at least a terminal, a network element managing service centralization and continuity, an access device and a network element managing mobility of a terminal. The method comprises a first network element anchoring the call based on the call setup request received from the terminal, and storing a provisional response returned to the terminal and the state of the call; the terminal detecting that a handover is necessary and sending a measurement report to an access network; the access network deciding to request a second network element for handover, upon detection of a signaling bearer while the measurement report meets handover condition; the second network element deciding to send the first network element a PS to CS handover request upon detection of the signaling bearer, after receiving a request for handover from the access network; and after reception of said handover request, if the first network element detects that the call is in the non steady state, than it checks the previously stored provisional response and sends the provisional response to a third network element, whereby completing the session handover procedure and updating the remote end.05-24-2012
20100208705RADIO TERMINAL, INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING PROGRAM, AND INFORMATION PROCESSING METHOD - A radio terminal (08-19-2010
20090257405METHOD AND APPARATUS FOR CARRIER SELECTION IN MULTI-CARRIER COMMUNICATION SYSTEMS - Systems and methods are described that facilitate the determination and request of resources a node may wish to reserve. The resources include a plurality of carriers that are shared with other nodes. In an approach, the node determines a condition related to a plurality of resources; identify a desired amount of resources from the plurality of resources based on the condition; and transmit a resource utilization message (RUM) for at least one of the plurality of resources based on the desired amount of resources.10-15-2009
20110032908METHOD, COMPUTER PROGRAM, RECEIVER, AND APPARATUS FOR DETERMINING A CHANNEL QUALITY INDEX - A method for determining a channel quality index in an OFDM receiver is disclosed. The method comprises receiving signals comprising reference signals from a serving cell and reference signals from neighboring cells; determining signal power of the reference signals from the serving cell and signal power of the reference signals from detected neighboring cells; and determining carrier-to-interference ratio to be the ratio between the signal power of the reference signals from the serving cell and the signal power of the reference signals from the detected neighboring cells. Carrier-to-interference ratio is used for adapting physical layer properties and/or for deciding on handover. A computer program and apparatuses for implementing the method are also disclosed.02-10-2011
20100296487TRAFFIC MANAGEMENT IN A HYBRID FEMTOCELL/WLAN WIRELESS ENTERPRISE NETWORK - A hybrid network controller may determine and/or communicate traffic management information for enabling setup and/or handoff of call and/or communication session among femtocells, access points and/or end-point devices. Traffic management information may comprise set-up instructions, handoff instructions, transmit power, neighbor list information, signal quality thresholds, frequency assignments, transmission time, code assignments and/or antenna pattern assignments. The hybrid network controller and/or an end-point device may control handoffs between a communication device external to the communication system and the femtocells, access points and/or end-point devices. Received signal strength, interference levels, SNR, signal path delay, power consumption, traffic loads, bandwidth usage and/or radio resource availability may be monitored and/or analyzed by the hybrid network controller. The hybrid network controller may assign time slots, codes, antenna patterns as well as a serving femtocell and/or AP for a set up and/or a handoff. The information may be communicated via wired, optical and/or wireless interfaces.11-25-2010
20100296488Apparatus and Method for Measurement Gap Configuration - A method for measurement gap configuration in a network of a wireless communication system is disclosed. The method includes steps of configuring a plurality of component carriers, which may contain uplink component carriers and downlink component carriers, to a UE in the wireless communication system, and indicating the UE to associate a first downlink component carrier of the plurality of component carriers with a measurement gap when the measurement gap is configured.11-25-2010
20100309885Wireless Communication Terminal and Communication Method - Provided is a wireless communication terminal (12-09-2010
20110122845MOVING USER EQUIPMENT WITHOUT SERVICE INTERRUPTION - A device determines a user equipment, associated with the device, to move to a target device provided in a pool of other devices, where the user equipment has an ongoing session. The device also moves the user equipment to the target device, via a handover procedure and without interrupting the ongoing session, when the user equipment cannot be moved to the target device via direct signaling to the user equipment. The device further moves the user equipment to the target device, via direct signaling to the user equipment and without interrupting the ongoing session, when the user equipment can be moved to the target device via direct signaling to the user equipment.05-26-2011
20100322198Pre-Emptive Roaming Mechanism Allowing for Enhanced QoS in Wireless Network Environment - A preemptive roaming mechanism in wireless network environments. In one implementation, the present invention provides a wireless client that implements a preemptive roaming mode that, when an attribute of the signal (e.g., Signal to Noise Ratio (SNR), etc.) between the access point with which the client is currently associated crosses a threshold, scans for other access points with which to associate. In one implementation, the client switches between the scanning mode and a traffic mode to allow data to be transferred between the client and the current access point. The pre-emptive roaming functionality can be configured to support desired data rates or other QoS levels.12-23-2010
20100322196Methods and Apparatus for Providing Broadcast Content Over a Unicast Channel - A method and apparatus providing broadcast content over a unicast channel. The method and apparatus may be configured to determine whether content received using a broadcast type format is to be transmitted using a unicast type format, and to map the content to a unicast reservation upon a determination that the content is to be transmitted using the unicast type format.12-23-2010
20100322197METHOD AND APPARATUS FOR PERFORMING HANDOVER WITH A RELAY NODE - Techniques for performing a handover in a network with a relay node (RN) are disclosed. The RN is a node deployed between an eNodeB (eNB) and a wireless transmit/receive unit (WTRU). The RN receives data from one of the eNB and the WTRU and forwards it to the other. The RN receives a packet data convergence protocol (PDCP) protocol data unit (PDU) from a serving donor evolved Node-B (DeNB) and transmits it to the WTRU. The RN makes a handover decision based on the measurement report received from the WTRU. After making a handover decision, the RN sends a handover request or a control message to the serving DeNB including a first unsuccessfully transmitted PDCP sequence number (SN). The serving DeNB then discards a PDCP PDU with an SN older than the first unsuccessfully transmitted PDCP SN.12-23-2010
20110044291PERFORMANCE MONITORING-BASED NETWORK RESOURCE MANAGEMENT WITH MOBILITY SUPPORT - A device receives, from a mobile device, a registration request when the mobile device moves to a new service area of a network, where the registration request includes a resource management (RM) extension and a performance monitoring (PM) extension. The device also inspects quality of service requirements of the registration request, identifies performance aspects of the registration request to be verified, and inspects performance monitoring information associated with the registration request to identify a performance monitoring test needed to make a resource management decision. The device further executes the performance monitoring test, collects results of the execution of the performance monitoring test, analyzes the collected results of the performance monitoring test, determines whether intervention related to network topology and configuration is possible, and accepts or rejects the registration request based on the analysis of the collected results of the performance monitoring test.02-24-2011
20110032909METHOD FOR HANDOVER WITH CONSIDERATION OF LOAD STATUS OF CELLS - A method for a handover with consideration of load status of cells is disclosed. The method for intra handover with consideration of load status of cells by a mobile station in a wireless communication system includes receiving a neighbor advertisement (MOB-NBR-ADV) message including load status information of neighbor cells from a serving base station, and performing intra handover according to the load status information of neighbor cells if there is at least a neighbor cell of which channel quality is equal to or higher than a handover threshold for a time duration among neighbor cells in an intra network.02-10-2011
20090034479Network system, control method, and gateway - To prevent a packet loss during hand over, provided is a network system including: a gateway coupled with a wired network; and at least two base stations coupled with the gateway over the wired network and providing a wireless access method, in which the gateway is configured to: calculate, for each of the at least two base stations, a delay in information transmission between the gateway and each of the at least two base stations; choose a maximum delay from among the calculated delays of each of the at least two base stations; calculate, as a delay difference of each of the at least two base stations, a difference between the chosen maximum delay and the delay of each of the at least two base stations; and notify each of the at least two base stations of the calculated delay difference of each of the at least two base stations.02-05-2009
20110044293WIRELESS COMMUNICATION APPARATUS AND COMMUNICATION APPARATUS - There is a problem that, if a silent period is generated to a real-time application such as VoIP due to handover using BBM method, a user has a sense of anxiety and misunderstands that communication is completely disconnected. If the silent period is generated to the real-time application such as VoIP due to packet loss at handover, a terminal activates handover alarm (beep sound, for example), indicating that handover is in progress, during the silent period. Thereby, it notifies the user that the silent period is caused by handover and prevents user's misunderstanding that communication is completely disconnected.02-24-2011
20110044292Apparatus and Method for Increasing Reliability of Serving Cell Change - Methods and apparatus are described herein to manage a serving cell change. A HS-SCCH monitored set is maintained to store entries for all pending serving cell change requests. The HS-SCCH for each entry is monitored for a timer period. Once a change request has been confirmed for one entry, monitoring for the other entries continues until expiration of the associated timers.02-24-2011
20110044290COMMUNICATION TERMINAL APPARATUS AND HANDOVER METHOD - A communication terminal apparatus wherein a network-led handover and a communication terminal apparatus-led handover are simultaneously performed, whereby even if the link between the communication terminal apparatus and the handover source is cut off before a completion of the handover, the handover can be performed at a high speed because of the communication terminal apparatus-led handover. In this apparatus, a reception power measuring part (02-24-2011
20110116479SYSTEM AND METHOD FOR DYNAMICALLY ESTABLISHING AND MANAGING CONNECTIONS - Techniques to dynamically manage wireless connections are described. For example, a mobile computing device may comprise a connection management module to dynamically select one of a plurality of switching technologies to initiate a connection with one or more target devices and automatically initiate the connection with the one or more target devices using the dynamically selected switching technology. Other embodiments are described and claimed.05-19-2011
20110085518VERTICAL HANDOVER COMPOSITE QUALITY MEASURES - A composite quality measure helps determine a target for a vertical handover between different connection types. Various measurements are normalized, weighted and summed to produce composite quality measures. A composite quality measure may be compared to a target value and the corresponding connection may be added to a feasibility table if the composite quality measure is above the target.04-14-2011
20110090873METHOD AND SYSTEM FOR MANAGING HANDOVER IN RADIO ACCESS NETWORKS - A method and system for managing handover from a first radio access network to second radio access network is provided. The method includes receiving information associated with one or more neighboring cells from a User Equipment (UE). The information associated with the one or more neighboring cell is measurement reports. Thereafter, the method deciding to perform Handover (HO) based on the measurement reports for the UE from the first radio access network to the second radio access network. Further, the method identifies a target cell from the one or more neighboring cells. The method then determines target cell capabilities. Thereby, the method sends at least one of a handover required message and a relocation required message along with the target cell capabilities to a core network element. The core network element then manages voice bearers and non-voice bearers based on the target cell capabilities.04-21-2011
20100054210WIRELESS NETWORK TRANSITIONING FOR MOBILE DEVICES - A mobile device and method are provided for receiving a measured signal strength associated with a second network at a first point in time. The processor calculates a predicted signal strength associated with the second network at a second point in time based on the measured signal strength and makes a determination regarding whether the quality of the second network is good and a determination regarding whether the quality of the second network is bad based on the measured signal strength and the predicted signal strength. The processor determines whether to rove in or rove out of the second network based on the determination regarding whether the quality of the network is good and the determination regarding whether the quality of the network is bad.03-04-2010
20110176515SYSTEM AND METHOD FOR PERFORMING HANDOVER IN A BROADBAND WIRELESS ACCESS COMMUNICATION SYSTEM - Disclosed is a system and a method for controlling a handover of a mobile subscriber station in a broadband wireless access communication system. When serving base station determines to perform a handover of the mobile subscriber station, neighbor base stations to which the mobile subscriber station can be handed over, from among neighbor base stations of the mobile subscriber station, are determined based on a service quality level of service being currently provided to the mobile subscriber station. A handover request signal containing information related to the determined neighbor base station to which the mobile subscriber station can be handed over is transmitted to the mobile subscriber station. The serving base station receives from the mobile subscriber station in response to the request of the handover information about one neighbor base station to which the mobile subscriber station will be handed over, and informs the neighbor base station that the mobile subscriber station will be handed over to the neighbor base station.07-21-2011
20100128697PACKET DATA PROTOCOL CONTEXT MANAGEMENT FOR HANDOVER FROM CELLULAR NETWORK TO A FEMTO CELL - System(s) and method(s) are provided to manage packet data protocol (PDP) contexts upon cellular-to-femto handover, wherein femto network has disparate capabilities to support applications with distinct access point names (APNs) and quality of service (QoS) profiles. Based at least on activity factors of applications associated with PDP contexts, a QoS-based ranking of PDP contexts, and subscriber input, cellular network platform selects active PDP contexts to retain and suspend upon handover. A group of active PDP contexts is handed off in accordance with femto coverage capability, with remaining active PDP contexts suspended during handover. When a suspended PDP context, and application associated therewith, is resumed through femto coverage, a PDP context modification is conducted with a new APN and the application is routed to a corresponding femto gateway node and application server. Additionally, femto network platform performs a radio access bearer reconfiguration to meet QoS requirements of the resumed PDP context.05-27-2010
20110075635MOBILE TERMINAL AND METHOD OF MANAGING AND PERFORMING DATA COMMUNICATION USING THE SAME - A mobile terminal and a method of managing and performing data communication using the same are provided. The mobile terminal effectively performs data communication over heterogeneous networks at a low cost and effectively manages communication modules connected to the heterogeneous network, and the method performs and manages data communication using the mobile terminal.03-31-2011
20110080895HANDOVER CONTROL METHOD, CELL RESELECTION METHOD AND MOBILE STATION - A handover control method comprises: a step in which a mobile station measures radio qualities in a plurality of different frequency cells at predetermined measurement intervals; and a step in which the mobile station, when determining that the radio quality in a specific frequency cell satisfies a report condition, starts up a timer for measuring the time during which the radio quality in the specific frequency cell continues to satisfy the report condition and, when the timer has expired, transmits to a radio base station a measurement report including the radio quality in the specific frequency cell. The mobile station, after determining that the radio quality in a second frequency cell satisfies the report condition and starting up a second timer, stops the second timer and starts up a first timer when determining that the radio quality in a first frequency cell having a higher priority than that of the second frequency cell satisfies the report condition.04-07-2011
20110069680ENHANCED MOBILE NETWORK SYSTEM ACQUISITION USING SCANNING TRIGGERS - A system and method for executing network acquisition employ a triggered scan for network acquisition regardless of the recorded optimal nature of the current network. In general, when one or more predefined conditions occur, a network scan is initiated to identify another network, if any, that is more optimal than the current network. Example trigger conditions include failed registration attempts, exceeding a predetermined distance threshold, entry to or exit from a pre-determined region, excess CDMA Chip delay, and others. Triggers may be used singly or in Boolean combinations. In this way, network scanning occurs when it may be beneficial, but will not be initiated too frequently or in situations where connectivity may not actually be suboptimal. This triggered scan provides improved connectivity, and can allow the device to make and receive calls in locations where it would otherwise not have been possible.03-24-2011
20120201227FREQUENCY QUALITY CRITERIA FOR INTER-FREQUENCY HANDOVER IN A TD-CDMA COMMUNICATION SYSTEM - A method for determining whether to perform handover of a UE apparatus to a candidate cell and carrier frequency of a TD-CDMA telecommunications network (such as a TD-SCDMA network) based separately on coverage and capacity, using one decision metric for coverage (e.g. based on received signal code power for the candidate cell and carrier frequency) and a different decision metric for capacity (e.g. based on a quantity proportional to the received signal code power for the candidate cell and carrier frequency and inversely proportional to a measure of total interference in the candidate cell on the carrier frequency. Corresponding equipment and a computer program product are also provided. In deciding whether handover is needed based on capacity, a threshold for received signal code power may be used in addition to the metric for capacity.08-09-2012
20120201226SWITCHING-BASED DOWNLINK AGGREGATION FOR MULTI-POINT HSDPA - A Multi-Point HSDPA system may provide downlink aggregation from multiple cells for a single receive antenna UE without requiring an advanced Type 3i receiver, by providing switching-based scheduling from one of the cells based on channel conditions of the respective cells, as reported by the UE. For example, the UE may monitor the HS-SCCH from both cells so that it may decode the HS-DSCH in any particular TTI as data is scheduled. The UE may further transmit a CQI for each of the cells, so that scheduling decisions between the cells at each TTI may be dynamically made to provide the downlink packet from the better of the cells.08-09-2012
20110211560MOBILITY CONTROL METHOD MITIGATING INTER CELL INTERFERENCE AND BASE STATIONS WHICH ADOPT THE METHOD - Interference applied to neighbor cells during terminal handovers can be reduced in wireless communication systems containing base stations having different cell sizes. A serving cell makes handover judgment criteria easier based on pre-acquired cell size information on its own cell and cell size information of neighbor cells in order to facilitate terminal handovers from a base station with a large cell size to a base station with a small cell size. The serving cell finds evaluation function values based on the propagation state (e.g. reference signal received power) between the terminal and target cell, and the interference and load information exchanged between the base stations, and selects the terminal for handover by comparing the evaluation function value with the handover criteria value. The system selects a target cell having a good effect in lowering interference such as a cell with large reference signal received power acquired from a terminal, to serve as the handover destination.09-01-2011
20100034173METHOD AND APPARATUS FOR ENHANCED USER EQUIPMENT-CONTROLLED HANDOVER - Certain aspects of the present disclosure propose methods for enhanced handover procedures that are controlled by either the user equipment (UE) or the serving evolved node-B (eNB). The methods take into account the qualities of both the reverse and forward communication links between the UE and the neighboring eNBs in selecting a target eNB for handover.02-11-2010
20110255516APPARATUS AND METHOD FOR MULTIMODE DEVICE HANDOVER - Systems and methods of operating multimode 3G/4G communications devices in an overlapping 3G/4G coverage area (e.g., WiMAX or LTE/CDMA EvDO) include determining if a number associated with temporarily-disabled sectors of an available sector set of the multimode device while the device is operational with a 3G base station is at least equal to a threshold number. If the number is at least equal to the threshold number, a scan for a sector in the 4G network to handover the operation of the multimode device from the 3G base station associated with the 3G coverage to a 4G base station associated with the 4G coverage is initiated. A scan for a fixed period of time for a new available sector in the 3G network to be added in the available sector set may be initiated; and, if a new available sector is added to the sector set, it may be redetermined if the number associated with the temporarily-disabled sectors is at least equal to the threshold number, before initiating the scan for a sector in the 4G network.10-20-2011
20080273502WIRELESS COMMUNICATION METHOD AND SYSTEM FOR CONTROLLING DATA BIT RATES TO MAINTAIN THE QUALITY OF RADIO LINKS - A wireless communication method and system for controlling the current data bit rate of a radio link (RL) to maintain the quality of the RL. The system includes a core network (CN), a radio network controller (RNC) and at least one wireless transmit/receive unit (WTRU). The RL is established between the RNC and the WTRU. The RNC establishes a guaranteed data bit rate, a maximum data bit rate and a current data bit rate associated with the RL. When the RNC senses an event which indicates that the quality of the RL has substantially deteriorated, the RNC reduces the value of the current data bit rate. Then, in a recovery process, if a similar event does not occur during an established waiting period, the RNC restores the current data bit rate back to the maximum data bit rate.11-06-2008
20100309887METHOD FOR HANDOVER FROM HOME CELL TO PUBLIC CELL IN MOBILE COMMUNICATION SYSTEM - A method for a connection mode terminal to hand over between a home cell and a public cell in a mobile communication system is provided. In the mobile communication system including the home cell and the public cell, a region of the terminal is determined and a random access channel for the handover is pre-allocated. When the normal handover from the home cell to the public cell fails, the access to the public cell is accomplished using the pre-allocated random access channel. Therefore, the handover failure rate can be lowered.12-09-2010
20080205345Means and Methods for Improving the Handover Characteristics of Integrated Radio Access Networks - The invention provides a method for assisting handover of a user terminal's, UT's, communication session in an integrated multi RAT network, said method to be carried out by an RNCI being installed in said network, said method comprising the following steps:— receiving a “Handover Candidate” message comprising a message type identifier information element identifying said message as being a “Handover Candidate” message and which message identifies said session and which message further identifies a candidate RNC of said network, wherein said candidate RNC constitutes an RNC handover candidate for said session,— establishing the identity of said RNC by investigating said message,— associating said communication session with said candidate RNC identified in the previous step. The invention provides an RNC08-28-2008
20100254351METHOD AND APPARATUS FOR PERFORMING A HANDOVER IN AN EVOLVED UNIVERSAL TERRESTRIAL RADIO ACCESS NETWORK - A method and an apparatus for performing a handover in an evolved universal terrestrial radio access network (E-UTRAN) are disclosed. A wireless transmit/receive unit (WTRU) sends a measurement report to a source evolved Node B (eNB), and receives a handover command from the source eNB. The WTRU initiates reception and processing of a primary broadcast channel (P-BCH) at the target cell after receiving the handover command. The WTRU then sends a random access preamble to the target eNB, receives a random access response from the target eNB, and sends a handover complete message to the target eNB. The reception and processing of the P-BCH may be initiated immediately after receiving the handover command or after sending the handover complete message. The WTRU may apply default configuration or source cell configuration in the target cell until a target cell SFN and/or P-BCH information are acquired.10-07-2010
20100284374HANDOVER CONTROL - The signal strength available to a mobile unit is periodically monitored (11-11-2010
20100284373Mobile Communication System - A mobile communication system has a plurality of communication areas being connection destinations of a mobile terminal. When a radio wave transmitted from a communication area to the mobile terminal connected to the communication area becomes an interference wave in another communication area different from the communication area, a handover target where an interference quantity may be reduced by handover is determined from at least one handover target candidates with respect to the communication area, and the mobile terminal executes forcible handover to the handover target.11-11-2010
20100284372APPARATUS, METHOD AND COMPUTER PROGRAM PRODUCT PROVIDING AVOIDANCE OF DATA DUPLICATION DURING PACKET SWITCHED HANDOVER - A method for handling PDUs in a handover is described. The method includes receiving a PDU from a network element. The PDU is transmitted in conjunction with an indicator to a MS. The indicator indicates whether the MS is required to check if the transmitted PDU is a duplicate of a previously transmitted PDU. The method also includes receiving a PDU from the network element. There is a determination made of whether a check of the received PDU is required. If the check is required a determination of whether the received PDU is a duplicate of a previously received PDU is made. If the received PDU is a duplicate it is discarded. If the received PDU is not a duplicate the received PDU is forwarded for processing. An apparatus is also described.11-11-2010
20090067386METHOD AND APPARATUS FOR CELL RESELECTION ENHANCEMENT FOR E-UTRAN - A framework for the cell reselection and associated measurement behavior is proposed based on a state in which a UE is camped on the cell. If the UE is ‘camped in any cell state’, inter-frequency and/or inter-RAT measurements are prioritized over intra-frequency measurements. The proposed scheme helps the UE to find a suitable cell while in the camped on any cell state. If the UE subscribes to specific frequencies, separate measurement rules are implemented to aid the UE to find and camp on the preferred frequencies. The proposed scheme also considers access related information in addition to radio quality to help the UE in making cell selections thereby mitigating the UE from camping on restricted cells. Such aspects minimize situations wherein users are limited due to the service provided by an operator.03-12-2009
20100329217CHANNEL ESTIMATION USING PRECODED REFERENCE SYMBOLS - A method for a terminal of a cellular telecommunication system, wherein the method comprises receiving a transmission signal, comprising reference symbols and synchronisation symbols, from the network node of the at least one cell; determining at least one pre-coding vector, of which one pre-coding vector being associated with transmission by an at least one transmit antenna of the network node of the at least one cell, for the transmission signal; and estimating, for each of the at least one pre-coding vector, a channel estimate for all sub-carriers of the received transmission signal from the received reference symbols and a reference symbol channel model defined for reference symbols of the transmission signal, and from the synchronisation symbols, the at least one pre-coding vector and a synchronisation symbol channel model defined for synchronisation symbols of the transmission signal.12-30-2010
20100329216Method of Handling Mobile Device Mobility and Related Communication Device - A method of handling mobile device mobility for a relay in a wireless communications system includes communicating with a mobile device and a first base station that serves the mobile device with a first serving cell, wherein the mobile device is under coverage of the relay, and managing performance of a mobility procedure corresponding to the mobile device according to whether the mobile device is under any coverage of the first base station or a target base station or whether the mobile device hears or receives signaling from any of the first base station or the target base station controlling a target cell, whereby the mobile device is switched to be served by at least one of the relay and the target base station or considers to be under a coverage of the target base station after completion of the mobility procedure.12-30-2010
20110261790System and Method for Providing Intelligent Cell Reselection for Delay Sensitive Data Applications - A mobile station for receiving delay-sensitive data from a wireless communications network is provided with a data buffer and cell reselection controller. The data buffer receives data from the network and stores the data for communication to a delay-sensitive data application. The cell reselection controller selectively inhibits cell reselection in order to meet requirements of the delay-sensitive data application. By intelligently controlling cell reselection, delay sensitive data may be received in a more reliable fashion, thereby increasing performance of the data application.10-27-2011
20120147856METHOD AND ARRANGEMENTS IN A MOBILE COMMUNICATION NETWORK - A method of managing communication in a cellular telecommunication network capable of using multiple carrier frequencies includes determining a downlink quality measurement of a primary carrier frequency and determining a downlink quality measurement of at least one secondary carrier frequency. The method also includes generating a combined quality measure based on the downlink quality measurement of the primary carrier frequency and the downlink quality measurement of the at least one secondary carrier frequency. Additionally, the method includes determining whether the combined quality measure fulfills a predetermined condition and, in response to determining that the combined quality measure fulfills the predetermined condition, triggering an event.06-14-2012
20110096753Methods And Apparatus For Signal Monitoring In A Wireless Communication Network - Techniques in a mobile communication device for signal monitoring in a wireless communication network are described. The mobile device operates for communications over a communication channel of the wireless network. During operation, the mobile device periodically obtains measurements of signal quality of the communication channel at a rate R. In addition, the mobile device obtains a measurement of velocity or acceleration of the mobile device. In response to an increase in the measure of velocity or acceleration, the mobile device increases the rate R. Conversely, in response to a decrease in the measurement of velocity or acceleration, the mobile device decreases the rate R. The measurements of the signal quality may be used to determine whether to initiate a handover to a different wireless network. In one illustrative environment, the initial wireless network is a wireless local area network (WLAN), the other wireless network is a wireless wide area network (WWAN), the signal quality is a received signal strength indication (RSSI) of the communication channel, and the monitoring involves obtaining samples of the RSSI.04-28-2011
20110096754MULTI-FREQUENCY REAL-TIME DATA STREAM HANDOFF - A method of operating a communication system is disclosed. A time sensitive data stream is sent to a wireless device via a first wireless station. A handoff criteria is determined to have been satisfied. Based on the handoff criteria being satisfied, at least one control message is sent that instructs the wireless device to increase a buffer size associated with the time sensitive data stream.04-28-2011
20100165950MOBILE STATION, BASE STATION, AND CELL SELECTION METHOD - In a disclosed method, a mobile station determines whether handover is intra-base-station based on a received signal; the mobile station sends a handover request indicating the determination result to a base station; the base station determines whether the handover is intra-base-station or inter-base-station based on the handover request; and the base station performs an intra-base-station handover process based on a CQI reception level threshold for intra-base-station handover if the handover is intra-base-station.07-01-2010
20100165951System and Method for Downlink Signaling for High Speed Uplink Packet Access - A wireless communication system (07-01-2010
20100080194RADIO BASE STATION AND MOBILE STATION - A radio environment acquirer acquires a radio environment condition of radio communication with a subordinate mobile station. A transmitter transmits, to the mobile station, information notifying a signal which is selected from among multiple signal groups and which is to be transmitted in a transmission area of a random access signal, and a notification of a period over which transmission of the signal as the random access signal is permitted. The period is variable in accordance with the radio environment condition acquired by the radio environment acquirer.04-01-2010
20100067493System and Method for Provision of IMS Based Services for Legacy CS UE with Home Node B Access - A system and method for providing user equipment (UE) mobility between a packet-switched system and a circuit-switched system is provided. In an embodiment, handover from a circuit-switched connection via a 3G Home Node B (3G HNB) to a circuit-switched connection via a Base Station System (BSS) is provided. In another embodiment, handover from a packet-switched connection via the 3G HNB to a circuit-switched connection via a BSS is provided. In yet another embodiment, handover from a packet-switched connection via a Long Term Evolution (LTE) access point to a circuit-switched connection via a 3G HNB is provided. Once handover is completed, an Interworking Function (IWF) is provided that acts as a Session Initiation Protocol (SIP) for translating circuit-switched signaling messages to SIP messages for packet-switched signaling. The bearer path comprises a circuit-switched bearer path to a Media Gateway (MGW), which provides a packet-switched bearer path toward the remote end.03-18-2010
20110051693METHOD AND APPARATUS FOR ROAMING SEAMLESSLY - In accordance with the invention, a method for roaming seamlessly comprises the steps of: associating with a first access point; selecting a second access point if a first received signal strength indication (RSSI) value is less than a first threshold value; performing an authentication procedure and a handshaking procedure with the second access point; and associating with the second access point if a second RSSI value is less than a second threshold value.03-03-2011
20110051692SYSTEMS AND METHODS FOR SUPPORTING AN ENHANCED SERVING CELL CHANGE WHEN MOVING AMONG DIFFERENT CELL TYPES - A system and method enable handover from a DC-HSUPA-capable node in a cellular wireless network to a non-DC-HSUPA-capable node. According to various aspects of the present disclosure, a handover may implement a legacy serving cell change procedure or an enhanced serving cell change procedure. In either case, signaling from the network to user equipment includes information to enable the user equipment to change or remove an Active Set when undergoing a handover from a cell with two uplink carriers and accordingly two Active Sets, to a cell with one uplink carrier and accordingly one Active Set.03-03-2011
20100020769A Method for Wireless Terminal Dynamically Switching Window in a Wireless LAN Environment - The invention discloses a method for wireless terminal dynamically switching window in a wireless LAN environment. The wireless LAN comprises several access points and stations which establish wireless communication connections with the access points. The stations can switch the current access window by scanning. The method characterizes in that including following steps: giving the switching window an initial value through the stations; the stations judge if there is another access point of which the signal quality is greater than that of the current access window through scanning wireless channels; if so, further judge if the stations are in a frequently handoff status, if so, the handoff judging result is not allowed to switch window; if not, the handoff judging result is allowed to switch window. The present invention can adaptively adjust the stations' switch windows according to the stations' handoff status and frequently handoff status. On one hand, the invention avoids the occurring of frequently handoff by changing the handoff conditions of the stations, increasing the access efficiency of the stations which is in the handoff status and in a wireless LAN environment, while maintaining the sensitivity of the stations which is in the handoff status, ensuring the quality of the wireless links between the stations and the access points.01-28-2010
20110216744INTERWORKING OF NETWORKS WITH SINGLE RADIO HANDOVER - Embodiments of systems and methods for interworking of networks using a single radio handover are generally described herein. Other embodiments may be described and claimed.09-08-2011
20100027510ENHANCED IDLE HANDOFF TO SUPPORT FEMTO CELLS - Systems and methodologies are described that facilitate performing idle handoff in a wireless communication environment. Signal quality of a pilot received from a base station can be measured, and a type (e.g., femto, macro, . . . ) of the base station from which the pilot is received can be identified. According to an example, when the type of the base station is identified as being a femto cell base station, the base station can be recognized as being either preferred or non-preferred. Further, a linger timer can be initiated when the signal quality of the pilot exceeds an entry threshold and the base station is identified as a femto cell base station. Moreover, idle handoff to the base station can be performed upon expiration of the linger timer as a function of at least one subsequent measurement of signal quality of the pilot received from the base station.02-04-2010
20090252122Method for reducing interference - This invention relates to wireless communication systems, specifically to methods for reducing interference. The invention allows a mobile station to determine if certain transmissions of the mobile station cause interference to reception by a second receiver in the mobile station, and indicate to the network that a change in a transmission parameter of the mobile station is desired. The network can then change a transmission parameter to reduce interference observed by the second receiver.10-08-2009
20090028112HANDOVER MECHANISM THAT EXPLOITS UPLINK CHANNEL QUALITY OF A TARGET CELL - System(s) and method(s) are provided for handover of a mobile terminal in a wireless communication system. Handoff resolution relies on both a downlink channel quality indication between a serving base station and the mobile terminal,, and uplink channel quality indications amongst the terminal and a measurement set of target base stations. To generate UL channel quality indicators, the mobile station conveys a narrowband or broadband, sounding reference signal, and serving and target base stations measure UL and DL performance metrics (e.g., RSRP, RSSI, or RSOT). In backward handover, UL channel state information from target cells is received at the serving base station through backhaul communication, and handoff is resolved based on both UL and DL quality reports. In forward handover, the set of UL quality reports are conveyed to the mobile station to determine a target cell for handoff.01-29-2009
20100238903INTER-ENODE B HANDOVER PROCEDURE - Methodologies are described that facilitate inter-eNode B handover. In various embodiments, logical protocol termination can be implemented between the user equipment and the target eNode B for inter-eNode B handover signaling. The provided handover forwarding and encapsulation mechanisms enable improved inter-operability between eNode Bs implementing different protocol versions or from different vendors, which in turn enables frequent protocol upgrades. Additionally, the invention enables the target eNode B to implement new radio configurations even if the configuration is unsupported by the source eNode B.09-23-2010
20110116480METHODS AND APPARATUS TO SUPPORT INTERFERENCE MANAGEMENT IN MULTI-TIER WIRELESS COMMUNICATION SYSTEMS - When a subscriber station (SS) encounters interference caused an interfering base station (BS), the interference can be mitigated regardless of whether the interfering base station is a CSG-Closed BS or whether the SS is connected to a serving BS. If the SS is not connected to a serving BS and cannot access the interfering BS, the SS will signal the interfering BS directly to request the interfering BS to perform IM. If the SS is a legal user, and conditions to initiate IM are met, the interfering BS will perform IM until conditions to terminate IM are met. If the SS is connected to a serving BS, the serving BS will request the interfering BS to perform or terminate interference mitigation (IM) on behalf of the SS if certain conditions are satisfied.05-19-2011
20100309888METHOD OF PERFORMING COMMUNICATION ACCORDING TO CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - A method of communicating with a network in a wireless communication system is disclosed. More specifically, the method includes performing handover by a mobile station (MS) from a first cell to a second cell, and measuring signal strengths of neighboring cells by the MS after moving to the second cell using the at least one default value if at least one parameter is not provided from the second cell.12-09-2010
20110149913METHOD AND SERVING BASE STATION FOR DETERMINING HANDOVER TYPE, AND METHOD FOR HANDOVER BETWEEN BASE STATIONS IN WIRELESS MOBILE COMMUNICATION SYSTEM USING CARRIER AGGREGATION - Provided are a method and a base station for determining a handover type, and a method for handover between base stations in a wireless communication system using carrier aggregation. A serving base station may collect measurement information required to determine an optimal frequency band set from a neighboring base station and a user equipment. The serving base station may determine an optimal frequency band set for downlink handover and uplink hand over, and determine a type of the downlink handover and the uplink handover by performing data processing of the collected measurement information.06-23-2011
20100002654USER CONTROLLED TRANSMIT POWER CONTROL DURING HANDOVER IN A CDMA SYSTEM - A method and device for controlling a mobile user equipment being in radio communication with base stations of a wireless communication system. The transmit power of the user equipment is controlled by the communication system. Immediately before sending an event message by the user equipment, the transmit power is increased by the user equipment, in order to increase the likelihood that the message is properly received by the base station. The message may be a soft handover event message. The transmit power is increased by opening a closed loop power control circuit, which normally controls the transmit power of the user equipment. By opening the closed loop circuit, the user equipment takes over the control of its transmitted power for increase thereof. Following the sending of the message, the user equipment may control the base station to send with increased power by increasing a target signal-to-interference ratio value (SIR01-07-2010
20110110336Communication System, Communication Method and Radio Communication Apparatus - A communication system includes plural application servers; a first base station and a second base station; and a radio communication apparatus configured to use one of the application servers via the first base station, wherein, when the radio communication apparatus is handed over to the second base station, it is determined whether to switch the application server that the radio communication apparatus uses to another application server based on a communication quality of a communication path including the communication path between the second base station and the application server.05-12-2011
20120039305METHOD AND APPARATUS FOR DETERMINING MATCHING OF INTER-CELL RESELECTION PARAMETERS AND HANDOVER PARAMETERS - The present invention discloses a method and an apparatus for judging matching of inter-cell reselection parameters and handover parameters; and the method comprises: receiving a handover request message or a relocation request message from a source base station by a target opposite end, wherein the handover request message or the relocation request message carries history information of the terminal; according to the handover request message or the relocation request message, the target opposite terminal judges whether the probability that cell handover of the terminal occurs subsequent to a radio resource control connection is established exceeds a threshold, wherein if there is only one ID of a cell in the history information and time span during which the terminal stayed in the cell is shorter than a preset time, it is determined that the terminal performs the handover subsequent to the radio resource control connection is established; if the probability exceeds a threshold, it being determined that the inter-cell reselection parameters and the handover parameters between the source base station and the target opposite end are not matched; otherwise, the cell reselection parameters and the handover parameters are matched. The present invention improves the performance of the network.02-16-2012
20120099563NETWORK SELECTION FOR MULTIPLE NETWORK PLATFORMS - Embodiments provide methods, systems, and apparatuses to generate and send a command message to a mobile device connected to a first wireless network to command the mobile device to connect to one of one or more candidate wireless networks. The message includes embedded service flow context information of the candidate networks including one or more attributes of the candidate wireless networks that are of potential interest to the mobile device in determining a performance or security impact if the mobile device switches to the one or more wireless networks. The mobile device can conditionally refuse the command if the candidate wireless networks are unable to meet one or more service level requirements of the apparatus. Other embodiments are disclosed and described.04-26-2012
20120099562Methods And Apparatus For use In Improving Network Coverage For Voice Or Data Calls - To improve network coverage or reduce false handover triggering, at least one client terminal is set to operate as a virtual access point (VAP) in a first wireless network by an AP controller. If a mobile device detects that a signal quality estimate of communications via an AP of the first wireless network is below a first value, the mobile device performs a handover procedure to the VAP. While maintaining the call via the VAP, if the mobile device detects that the signal quality estimate is back above the first value, the mobile device performs a handover procedure back to the AP of the first wireless network. On the other hand, if the mobile device detects that the signal quality estimate is below a second value which is less than the first value, the mobile device performs a vertical handover procedure from the VAP to a base station of a second wireless network.04-26-2012
20080259876DORMANT SESSION MANAGEMENT ASSOCIATED WITH HANDOVER - Systems and methods according to these exemplary embodiments provide for selectively transmitting a pre-registration, re-registration or de-registration initiation message associated with handing off user equipment between different access systems, e.g., a long term evolution (LTE) system and a high rate packet data (HRPD) system, to reduce dormant sessions. The decision to selectively transmit initiation messages is typically performed by a dormant session management function (DSMF).10-23-2008
20110064059Apparatuses, Methods and Computer Program for Cell Reselection Evaluation - The invention relates to an apparatus including a first cell evaluator configured to carry out a first cell reselection evaluation process; a cell analyzer configured to analyze a cell selected in the first cell reselection evaluation process and to trigger a second cell reselection evaluation process in a case the cell selected in the first cell reselection process is a relay node cell or a cell supported by a node which node also supports relay node cells, and the cell is within a same cell group than that of a serving cell; and a second cell evaluator configured to carry out the second cell reselection evaluation process.03-17-2011
20110064058apparatus and method of handoff between wireless networks - A system and method are provided for supporting a multi-mode portable user terminal (UT) hard handoff procedure for a call from a wireless local area network (WLAN) to a cellular telephone network. The method includes: establishing a link between a UT and a serving WLAN; establishing a call via the established WLAN link; monitoring the WLAN link signal strength; simultaneously monitoring a serving cellular network; initiating a hard handoff to the cellular network, responsive to the monitored WLAN link signal strength falling below a minimum threshold; and, continuing the call via the cellular network. More specifically, the method initiates a call handoff to a Cellular Gateway (CGW) telephone number, responsive to the monitored WLAN link signal strength falling below the minimum threshold. Then, continuing the call via the cellular network includes continuing the call to the first telephone number via the CGW handoff telephone number.03-17-2011
20110317669SEMICONDUCTOR DEVICE, WIRELESS TERMINAL DEVICE, AND WIRELESS COMMUNICATION SYSTEM - According to an embodiment, a semiconductor device includes a wireless station selection unit configured to select a connection destination wireless station from among a plurality of wireless stations. The wireless station selection unit includes a power calculation processing unit, a storage unit, a table update processing unit, and a power variation range detection processing unit. The power calculation processing unit is configured to calculate power of each receiving signal from each of the wireless stations. The storage unit is configured to store a table, and the power of each receiving signal equal to or more than a predetermined threshold is recorded in the table in association with each of the wireless stations. The table update processing unit is configured to update the table at a predetermined timing interval. The power variation range detection processing unit is configured to detect a variation range of the power for each of the wireless stations with reference to the table and configured to set the wireless station in which the variation range is within a predetermined range as a priority candidate of the connection destination wireless station.12-29-2011
20090092101WIRELESS LAN WITH CHANNEL SWAPPING BETWEEN DFS ACCESS POINTS - The present invention enhances the dynamic frequency selection 9DFS) algorithms used in Wireless LANs by adding a channel swapping mechanism. The aim of the traditional DFS algorithm is to dynamically select channels in a wireless LAN in such a way that the best performance is achieved. However, not always the optimal channel selection is achieved. This invention describes an addition to the DFS algorithm in such a way that two APs can decide to swap channels instead of one AP switching to another channel. To avoid the problem of sub-optimal channel selection, a requesting AP sends Swap Requests to other APs in order to sense the willingness of other APs to swap channels with the requesting AP.04-09-2009
20120044910MOBILE COMMUNICATION SYSTEM - A base station which uses either one of a plurality of component carriers individually or uses an aggregate carrier which is an aggregate of the above-mentioned plurality of component carriers to carry out radio communications with a mobile terminal corresponding to the above-mentioned component carrier and also carry out radio communications with a mobile terminal corresponding to the above-mentioned aggregate carrier is provided. The base station notifies a bandwidth of an aggregate carrier which is an aggregate of all of the above-mentioned component carriers, as a bandwidth which the above-mentioned base station uses, to the mobile terminal corresponding to the above-mentioned aggregate carrier. As a result, while an improvement in the transmission rate is provided according to the aggregate carrier, the base station can also support an operation of a mobile terminal corresponding to a component carrier.02-23-2012
20100074228COMMUNICATION ENVIRONMENT SWITCHOVER - Communication environment switchover may be provided. A received signal strength level may be determined corresponding to a signal sent from a first device and received at a second device. The received signal strength level may be measured at the second device. In addition, the first device may be re-provisioned. For example, the first device may be re-provisioned to communicate in a second environment if the first device is provisioned to communicate in a first environment and if the received signal strength level is greater than a first threshold value. Furthermore, the first device to be re-provisioned to communicate in the first environment if the first device is provisioned to communicate in the second environment and if the received signal strength level is less than a second threshold value. The second threshold value may be less than the first threshold value.03-25-2010
20120008597CONTROLLING INTERFERENCE IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for controlling interference in a wireless communication system includes a first step of performing 01-12-2012
20120014357APPARATUS AND METHOD FOR PERFORMING HANDOVER IN MULTIPLE COMPONENT CARRIER SYSTEM - A method for performing handover in a multiple component carrier system includes a UE transmitting a measurement report message, including measurement values for one or more cells, to a source BS, the source BS transmitting a handover request message, including at least one of a candidate cell list including at least one candidate cell to be used in a target BS, an aggregatable cell list including at least one aggregatable cell in which UE capability is taken into consideration, and a list of sensible cells including at least one cell defined based on a similarity sensitivity of a measured frequency, to the target BS based on the measurement value, the source BS checking the cell included in the at least one list, receiving a handover ACK message including a final cell from the target BS, and determining handover, and the source BS transmitting a handover command message to the UE.01-19-2012
20120113961Interference Measurements in Enhanced Inter-Cell Interference Coordination Capable Wireless Terminals - A wireless communication terminal is disclosed. The terminal includes a transceiver coupled to a processor configured to estimate a signal power associated with a second transmission from a second base station, wherein the second transmission is part of a signal received at the terminal wherein the signal includes a first transmission from a first base station and the second transmission from the second base station. The processor is also configured to estimate a Receive Signal Strength Indicator (RSSI) of the received signal, and to subtract the signal power associated with the second transmission from the estimated RSSI to obtain a modified RSSI.05-10-2012
20120063421Method of Configuring Secondary Cells and Related Communication Device - A method of handling at least one secondary cell of a mobile device in a wireless communication system is disclosed. The mobile device is managed by a first network of the wireless communication system. The method comprises releasing the at least one secondary cell, after receiving a handover command from the first network, wherein the handover command indicates the mobile device to hand over from the first network to a second network of the wireless communication system; wherein the second network conforms to a 3GPP standard with a version equal to or earlier than the 3GPP Rel-9, and the first network conforms to the 3GPP standard with a version equal to or later than the 3GPP Rel-10.03-15-2012
20110090872METHOD FOR PERFORMING A HANDOVER IN A MOBILE COMMUNICATION SYSTEM - A method where a first type location area of a mobile node is registered to a first mobility management node. A second type location area is determined based on a location of the mobile node. A second type location area of the mobile node is registered to a second mobility management node of a second system. A request to perform user plane bearer establishment through the second system is received. Thereupon, radio measurements associated with at least two candidate cells are obtained from the mobile node. Candidate cells are searched to find at least one cell associated with the second type location area. A cell is selected among the at least one cell, which is indicated to the selected cell to the mobile node. A handover request is provided to the mobile node.04-21-2011
20090135785METHOD FOR FAST RADIO LINK MEASUREMENTS OF ACCESS POINT CANDIDATES FOR WLAN HANDOVER, A MOBILE TERMINAL, AN ACCESS POINT AND PROGRAM MODULES THEREOF - The invention concerns a method for fast determination of the quality of the radio link from a mobile terminal (STA) to an access point (AP05-28-2009
20110090871METHOD AND APPARATUS FOR COMPENSATING QOS DURING HANDOVER BY BASE STATION IN WIRELESS BROADBAND ACCESS SYSTEM - An apparatus and method for compensating Quality of Service (QoS) during a handover of a Mobile Station (MS) by a serving Base Station (BS) and a target BS in a wireless broadband access system are provided. The method includes generating a message during a handover from the serving BS to a target BS, the message including at least one of a data transmission/reception time just before the handover, a size of a time window for which a data transmission/reception history is recorded in an accumulated way, and an amount of data transmitted/received during the time window, and transmitting the message to the target BS. The target BS can more accurately find a handover break time and the amount of data transmission/reception in the serving BS at the time the MS has been handed over to the target BS, enabling fast and adequate QoS compensation/correction for each QoS class, and thus facilitating flexible, efficient and accurate QoS provisioning regardless of controlled handover and uncontrolled handover.04-21-2011
20090003285ADAPTIVE PAGING AREA - Techniques for determining a paging area of a paging group in a wireless communications network based on a value of one or more dynamically changing communication characteristics. In various embodiments, a paging area may be determined to reduce resource use in a wireless communication network supporting an idle mode of a mobile station. In one embodiment, the paging area may be determined based on a speed of a mobile station.01-01-2009
20120170552METHODS FOR MANAGING RESOURCE UTILIZATION IN A LONG TERM EVOLUTION COMMUNICATION SYSTEM - Methods for managing resource utilization in a Long Term Evolution (LTE) communication system are described. In one method, an application server: receives signaling indicating resource utilization in the LTE system; determines, based on this signaling, a set of control parameters for a user equipment (UE) receiving service from the LTE system; and sends the set of control parameters to the UE, wherein the set of control parameters indicates behavior for the UE toward at least one of maintaining LTE system resources or modifying standard handover procedures. The signaling indicating resource utilization in the LTE system is sent from UE, the LTE system, or both.07-05-2012
20110103350Handover Measurements in a Mobile Communication System - A cellular communication system has an air interface divided into frames, each consisting of sub-frames at least two of which are synchronization sub-frames. For each cell, different cell-related synchronization signals are transmitted to user equipments (UEs) in different synchronization signal sub-frames. The UE detects cell identities of first and second cells. Weights then control generation of weighted handover measurements made from the first cell's synchronization signals received during synchronization sub-frames, wherein each of the weights is a function of the cell identity of the first cell, the cell identity of the second cell, and which ones of the first and second cells' cell-related synchronization signals are transmitted in the respective one of the plurality of synchronization sub-frames during which the weight is applied. A filtered handover measurement, upon which a handover decision can be made, is generated from the weighted handover measurements.05-05-2011
20120250659SYSTEM AND METHOD FOR ENABLING SOFTER HANDOVER BY USER EQUIPMENT IN A NON-DEDICATED CHANNEL STATE - One feature provides for an apparatus, system, and method for enabling softer handover by a user equipment in a non-dedicated channel state, such as Cell_FACH state. A user equipment communicates with a base station via a first sector of the base station, and receives a preamble signature partition list. The user equipment determines that a second sector of the base station is available for softer handover, and selects a preamble signature from the preamble signature partition list corresponding to a softer handover configuration associated with the first sector and the second sector. The user equipment may then transmit a softer handover initiation message that includes the preamble signature while in a non-dedicated channel state, such as Cell_FACH.10-04-2012
20120120922CELL RESELECTION USING ACCESS POINT INFORMATION - Data provided by an access point of a wireless local area network (“WLAN”) is used to assist a mobile device in cell reselection. If a serving cell of a cellular communications network is unsuitable for providing cellular service, a candidate cell co-located with the serving cell can be selected as the serving cell based on quality of service metrics associated with the serving cell and the candidate cell. The mobile device can be proactively commanded to switch to the candidate cell for receiving cellular service. In some implementations, the quality of service metrics are calculated from call logs collected from mobile devices operating in the cellular communications network. In some implementations, network information regarding serving cell performance can be used with the call logs to generate the quality of service metrics.05-17-2012
20100290435QUALITY BASED HANDOVER PROCEDURE BETWEEN CO-LOCATED CELLS - The present invention relates to cellular system and especially to handover between cells on different frequency carriers in an OFDM system or between cells in 2 systems adopting different radio access technologies (RAT), at least one of them being OFDM technology. A problem is the intra-cell interference impact on the quality a connected mode terminal measures in the own cell and in neighbour cells. This is a problem for cells based on OFDM technology, because intra-cell interference has no impact as compared to the inter-cell interference on the quality provided by the cell to a connected mode terminal, whereas in UTRA the intra-cell and inter-cell interference have the same impact on the quality provided. The solution to the problem is based on the insight that for cells that are located on the same site, the eNode B has possess information on the power transmitted on the respective frequency carrier, and can adjust the quality as reported from the terminal on co-located OFDM cells. The adjusted quality measure enables an improved evaluation of the quality of co-located cells, for a potential handover. The invention also relates to embodiments on a 2-step handover, wherein handover to inter-frequency, or an inter-RAT cell on another site is made as a handover to co-located inter-frequency/inter-RAT cell and a handover to a intra-frequency cell located at the other site.11-18-2010
20100290434Radio Communication Device and Radio Communication Method - A radio communication terminal 11-18-2010
20110002307Controlling Node - A controlling node for a cellular communications system, arranged to handle the control of one or more user terminals in a first cell and configurable to receive transmissions from one or more user terminals in the first cell, with a defined periodicity. The controlling node includes a receipt monitor for one or more users in the cell, the receipt monitor being arranged to monitor timely receipt of the one or more of the certain transmissions from the one or more user terminals at the expected time for the defined periodicity, and to initiate handover of a user terminal from the first cell to another cell if the controlling node does not receive one or more of the certain transmissions at the expected time for the defined periodicity from the user terminal.01-06-2011
20100246535DETERMINING WHETHER TO SWITCH BETWEEN GROUP CALLS BASED ON PRIORITY WITHIN A WIRELESS COMMUNICATIONS SYSTEM - Embodiments of the present invention are directed to determining whether to switch between group calls based on priority within a wireless communications system. In an embodiment, an announce message is received at a given access terminal that announces a second group session when the given access terminal is participating in the first group session. The given access terminal acquires one or more priority levels associated with one or more of the first and second group sessions. The access terminal determines whether to switch from the first group session to the second group session based on the one or more priority levels. The access terminal selectively switches from the first group session to the second group session based on the determination.09-30-2010
20100246534Method and System for Managing Handoff in a Radio Access Network - Disclosed is a method and device for managing handoff of an access terminal in a radio access network (RAN). An access terminal may detect a handoff trigger, determine whether there is an ongoing data transfer in progress, determine an amount remaining in the data transfer, compare the amount remaining to a threshold amount, and delay or cancel the handoff if the amount remaining is below the threshold amount. Additionally, the access terminal may consider signal strength of the current (source) coverage area in determining whether to delay or cancel the handoff.09-30-2010
20100246533Intersystem Change Involving Mapping Between Different Types Of Radio Bearers - The present invention relates to a packet data core network node (09-30-2010
20100208706NETWORK NODE AND MOBILE TERMINAL - Disclosed is a technique of, in a network conducting network based local mobility management, suppressing generation of signaling and an increase of processing load on a network entity and preventing a delay. According to this technique, a mobile node (MN 08-19-2010
20100067491SYSTEMS AND METHODS FOR CLOSED SUBSCRIBER GROUP CELL RESELECTION - A method for base station reselection in a wireless communications system is disclosed. The method may determine a first indication of signal strength for a first signal sent from a first base station and received by a user equipment (UE). The method may also determine a second indication of signal strength for a second signal sent from a second base station and received by the UE. The method may further determine a relative signal strength based on the first indication of signal strength and the second indication of signal strength. The method may also determine a Q factor based on the relative signal strength. The Q factor may be an indication of when base station reselection should be performed.03-18-2010
20110182271METHOD AND APPARATUS FOR FACILITATING EFFICIENT HANDOVER - A method and apparatus facilitating efficient handover by a wireless communications device is provided. The method may comprise obtaining at least two handover metrics for a target cell and for a serving cell, wherein the at least two handover metrics are determined by a request received from the serving cell, determining if all the obtained handover metrics for the target cell are greater than or equal to corresponding threshold values, wherein the corresponding threshold values for the at least two handover metrics are determined by the request received from the serving cell, determining if at least one of the obtained handover metrics for the serving cell is less than the corresponding threshold value, and generating a measurement report indicating the target cell as a handover candidate cell.07-28-2011
20120163344Methods And Apparatus For Use In Initiating Vertical Handover Based On Comparative Evaluation Of WLAN And WWAN Signal Qualities - Techniques in a mobile device for use in initiating vertical handover of a voice or a data call between a wireless local area network (WLAN) and a wide area wireless network (WWAN) are described. The mobile device performs communication operations for maintaining the voice or the data call via the WLAN or the WWAN. During the voice or the data call, the mobile device identifies a WLAN signal quality value of signals with the WLAN, as well as a WWAN signal quality value of signals with the WWAN. The mobile device then performs a comparative evaluation of the WLAN and the WWAN signal quality values, and initiates a vertical handover of the voice or the data call between the WLAN and the WWAN based on the comparative evaluation of the WLAN and WWAN signal quality values. The comparative evaluation may involve calculating a signal indicator value which is based on a ratio of the WLAN and the WWAN signal quality values. Alternatively, the comparative evaluation may involve comparing or finding the difference between the WLAN and the WWAN signal quality values.06-28-2012
20090059868Cell Base Station Radio Frequency Channel Selection - A code division multiple access telecommunications network including an underlay base station in a private premises and a plurality of overlay macro base stations. The underlay base station includes a GPS receiver and a mobile unit receiver. The underlay base station uses its geographic location to obtain information identifying base stations within a preselected distance of the underlay base station. It uses the mobile receiver to measure signal strength of the base stations. It automatically selects as an operating frequency a channel dedicated to underlay stations or an unused channel allocated for macro base stations or a macro base station frequency which results in minimum interference. The mobile unit receiver may be used to identify the frequency with lowest signal level at the underlay station.03-05-2009
20090059867Cell Base Station Neighbor List Self Configuration - A code division multiple access telecommunications network including an underlay base station in a private premises and a plurality of overlay macro base stations. The underlay base station includes a GPS receiver and a mobile unit receiver. The underlay base station uses its geographic location to obtain information identifying macro base stations within a preselected distance of the underlay base station. It uses the mobile receiver to measure pilot signal strength of the macro base stations. It generates a neighbor list of the identified macro base stations ranked according to pilot signal strength.03-05-2009
20100309886Inter-System Handoff Using Circuit Switched Bearers for Serving General Packet Radio Service Support Nodes - Systems and methods according to these exemplary embodiments provide for methods and systems for handling off user equipment between a second generation (2G) radio access network (RAN), e.g., a Global System for Mobile communications (GSM) network, and a long term evolution (LTE) network.12-09-2010
20120213205SYSTEM AND METHOD FOR PROVIDING MULTI NETWORK CONNECTIVITY - In various embodiments, a system provides multi network connectivity between a broadband, packet-switched wireless Radio Access Network (RAN) and first and second different wireless networks using a broadband transceiver configured to receive and transmit packet-switched data over the RAN. First and second transceivers with respective data interfaces with the broadband transceiver are configured to establish a first and second wireless networks using different communications protocols. A processor and associated memory are operatively coupled together to at least control the broadband transceiver, the first transceiver, and the second transceiver. A communications range of the first and second wireless networks are extended beyond a respective intrinsic data communications capability thereof via the broadband transceiver. The system and method may be implemented to improve in-building wireless coverage, or to provide real-time content to mobile users, e.g., in an automobile, and/or to provide real-time vehicle diagnostic codes to a maintenance support node.08-23-2012
20100195621METHOD, RADIO SYSTEM, AND BASE STATION - In a radio system having at least one base station that is part of a public mobile network, at least one mobile terminal communicates with the at least one base station, a local breakout service network provides Internet protocol gateway services. A serving base station of a mobile terminal is configured to provide the local breakout service to the Internet protocol gateway while retaining user access control and a remote Internet protocol gateway of a packet core network of the public mobile network for the mobile terminal; to provide information on neighboring cells in which the local breakout service can continue; to make a handover decision based on measurement reports received from the mobile terminal; and to transfer user context data including local breakout service related information to a target base station during handover for providing mobility within the local breakout service area for the mobile terminal.08-05-2010
20100272070SCRAMBLING CODE ALLOCATION IN A CELLULAR COMMUNICATION NETWORK - In a cellular wireless communications network, measurements are received from a plurality of user equipments relating to the reference signal received powers from a plurality of other cells of the cellular wireless communications network For other cells of the cellular wireless communications network having a physical cell identity (such as a scrambling code) that is the same as a physical cell identity of that first cell, it is determined from the received measurements whether a mutual potential interference level with that cell exceeds a threshold If so, an alternative physical cell identity is proposed, that would cause a mutual potential interference level between the cell or the potentially interfering cell and another cell already using that alternative physical cell identity that is lower than the mutual potential interference level between the cell and the potentially interfering cell.10-28-2010
20100195623SYSTEMS AND METHODS FOR PROVIDING INTERACTIVE VIDEO SERVICES - An apparatus includes a plurality of content sources providing content relevant to an event at a venue, one or more wireless access points positioned at the venue, a plurality of servers distributing the content signals to the wireless access points, and a plurality of wireless communication devices, each using a browser to retrieve the content through one of the wireless access points. A method performed by the apparatus is also provided.08-05-2010
20100195622Method of Maintaining Broadcast Service Continuity - An access node in the boundary area of a single frequency network service area transmits a boundary indication to the mobile terminals in the boundary area to notify the mobile terminals that they are approaching the boundaries of the single frequency network. The mobile terminals receiving the boundary indications may then take steps to maintain continuity of broadcast services when the mobile terminals leave the service area of the single frequency network.08-05-2010
20120257600SYSTEM AND METHOD FOR PROVIDING VOICE SERVICE IN A MULTIMEDIA MOBILE NETWORK - User Equipment (UE) receiving non-voice packet switched service in an Evolved Universal Mobile Telecommunications System Terrestial Radio Access Network (eUTRAN) cell undergoes handover to a circuit switched GSM/Edge Radio Access Network (GERAN)/UTRAN cell in response to a requirement for voice service. The voice service is established in the circuit switched domain of a GERAN/UTRAN cell to ensure service continuity regardless of UE mobility that would otherwise not be possible if the voice service was established in the eUTRAN cell. A Gs-like interface between a Mobile Switching Center (MSC) of the CS Core Network and the Mobility Management Entity (MME) of the Evolved Packet Core provides an interface for page requests and location update procedures to be performed.10-11-2012
20090016304Method for Control of a Connection Exchange Between Network Access Devices - A method in a user terminal controls f a connection exchange between network access devices in a connection layer, whereby at least one quality parameter is determined on the basis of signal transmissions of a current provider network access device on a physical layer. Depending on the at least one determined quality parameter, at least one request is transmitted to the first network access device and/or to at least one second network access device and, dependent on receipt of at least one message from the first and/or the at least one second network access device, a connection exchange to the second network access device is initiated.01-15-2009
20090316658MOBILE NETWORK HANDOVER INITIATION - Methods and systems to monitor wireless signal strengths associated with wireless access points, and to initiate a handover procedure upon one or more thresholds. A handover may be initiated prior to a loss of an existing network connection.12-24-2009
20110002308Wireless Communication Apparatus - In order to perform handover from a first wireless communication network 01-06-2011
20120269173Method and Apparatus for Resolving Paging Monitoring Conflicts in Multimode Wireless Equipment - A multimode wireless access terminal is configured to operate in idle mode while registered with a plurality of radio access technologies, for example, a TD-SCDMA network and a WCDMA network, and monitor paging messages, with a reduced likelihood of paging conflicts and missed calls. If the paging conflict is seen at a particular cell, then a cell reselection to another cell may be utilized to change the cell and avoid the conflict. Because the probability of a paging conflict is small due to the short duration of paging indicator messages, the access terminal may have very infrequent paging indicator monitoring conflicts, and when conflicts actually do occur, it is very likely that the UE will find a neighbor cell without conflict.10-25-2012
20120269174ROBUST AND FAST INTER-EBS HANDOFF MECHANISM - A communications system provides a robust and fast inter-base station handoff mechanism, e.g. for networks using Enhanced Base Stations (EBS) equipment. A method for connecting a mobile device to a destination base station in the wireless communications system, may include steps of receiving a mobile device measurement report, transferring context information from a serving base station to possible target base stations, and receiving admission control information from possible target base stations. A priority list of the possible target base stations is calculated and sent to the mobile device. The mobile device connects to one or more of possible target base stations according to the priority list. The method may also entail receiving a release message from one of the possible target base stations to which the mobile device has successfully established a wireless connection, to allow release of resources of the prior serving base station.10-25-2012
20120269172Apparatus and Method for Providing Handover Trigger Mechanisms Using Multiple Metrics - A method and apparatus for providing handover trigger mechanisms using multiple metrics in a TD-SCDMA system is provided. The method may comprise determining if a difference between a distance from a UE to a neighbor Node B and a distance from the UE to a serving Node B meets a criteria, and determining whether to perform a handover from said serving Node B to said neighbor Node B based on whether the determined difference meets the criteria.10-25-2012
20120269171METHOD, SYSTEM AND APPARATUS FOR MANAGING CALL HANDOFF - A method, system and apparatus for managing call handoff are provided. A mobile device engaged in a first media session over a first transport determines a second transport is available. A reflected media session is established via an echo server over the second transport. Quality of the reflected media session is evaluated by determining a call metric based on call transport data received at the mobile device from the mobile device (itself) in the reflected media session. Call handover is requested from the first media session to a second media session over the second transport when the call metric indicates that the quality of the reflected media session meets a threshold.10-25-2012
20120320879Fast Reselection Between Different Radio Access Technology Networks - A user equipment UE determines that a neighbor cell is higher priority than a serving cell, measures neighbor cell signal strength in n>1 iterations, and analyzes them for reselecting from the serving cell to the neighbor cell. Each measurement iteration is spaced from one another by a time interval (e.g., 1 DRX) that is specific for the neighbor cell being higher priority. In various embodiments, the UE measures while in a Cell-PCH, URA-PCH or idle state/mode and the first iteration is taken at the first available measurement opportunity after transitioning to that state/mode. The UE reselects to the neighbor cell based on the analyzed signal strengths; in one embodiment the decision to reselect is without regard to signal quality of the serving cell; and in another the decision is without regard to whether a reselection condition remains satisfied for a specified time period T12-20-2012
20100215023SYSTEMS AND METHODS THAT AUTONOMOUSLY DETECT AND MEASURE ANCILLARY COMMUNICATIONS FOR MAKING HANDOVER DECISIONS - A networked computing system facilitating ancillary device measurement of regional network communications in order to determine intra-network communications handovers. The networked computing system includes a base station, one or more transceiver devices having shorter-range communications capability than the base station, user equipment, and a data communications network facilitating data communications amongst the networked computing systems devices. Within the network, a first transceiver device may be configured to detect ancillary communications between a user equipment and the base station, and then measure one or more characteristics associated with the ancillary communications in response to detecting the ancillary communications. The first transceiver device may also be configured to transmit the measured characteristics to the base station or to an auxiliary network controller device that is capable of making network communications usage decisions based on one or more network resource usage rules.08-26-2010
20120287910ROAMING ENCODED INFORMATION READING TERMINAL - A portable encoded information reading (EIR) terminal for incorporation in a data collection system having a host computer, a plurality of peer EIR terminals, and a plurality of interconnected networks including one or more wireless networks, can comprise a central processing unit (CPU), a memory, an encoded information reading (EIR) device, and at least one wireless communication interface. The EIR terminal can be associated with a home network and have a home address belonging to the address range associated with the home network. The EIR terminal can participate in one or more communication sessions and exchange messages, at least one of which can include decoded message data corresponding to an encoded message, with the host computer. The EIR terminal can maintain active communication sessions using its home address when roaming between the interconnected networks.11-15-2012
20120287911BASE STATION, USER EQUIPMENT, COMMUNICATION CONTROL METHOD, AND RADIO COMMUNICATION SYSTEM - A base station includes a radio communication unit that establishes 11-15-2012
20100172329HANDOVER CONTROL APPARATUS, MOBILE STATION, BASE STATION, HANDOVER CONTROL SERVER, AND HANDOVER CONTROL METHOD - In handover control, a data collection unit collects measurement data that indicates communication quality of uplink and downlink paths between a mobile station and base stations. A candidate evaluation unit evaluates which base station is optimal for uplink, as well as which base station is optimal for downlink, based on the measurement data. A station selection unit determines which link has priority, either uplink or downlink, according to the class of data services that the mobile station uses in radio communication, and selects as a target base station for handover the base station that has been determined as being optimal for the link having priority.07-08-2010
20100172328METHOD AND SYSTEM FOR DATALINK GROUND STATION SELECTION - A method for selecting a ground station for communication with an aerial vehicle is provided. The method comprises receiving at an aerial vehicle one or more messages from one or more ground stations. The method includes storing one or more signal strength values corresponding to the one or more received messages in a data structure for each respective one or more ground stations received during a predefined time period. The data structures for each of the one or more ground stations is updated. The average of the signal strength values stored in each data structure is calculated. The method compares the average signal strength of each of the one or more ground stations and selects which ground station the aerial vehicle is to communicate with based on predefined criteria.07-08-2010
20130022024ROAMING SYSTEM USING WIRELESS ACCESS CONTROLLER TO SELECT ACCESS POINT AND METHOD THEREOF - A roaming system using a wireless access controller to select an access point and the method thereof are provided. By sending a signal strength between a station and access points (AP's) detecting the station from each AP to a wireless access controller (WAC), and notifying the station to select one of the APs to connect according to the signal strength between the station and each AP by the WAC, the system and the method can keep connection quality and transmission efficiency of a station, and achieve the effect of fast roaming.01-24-2013
20130022025BASE STATION, COMMUNICATION METHOD AND WIRELESS COMMUNICATION SYSTEM - A base station, to which a cell belongs and which communicates with a relay node to which a relay node cell belongs, including a control unit configured, at a time of handing over the relay node from another cell belonging to a first base station to the cell belonging to the base station, to request the relay node to measure wireless quality of neighbour cells of the cell belonging to the base station and report a measurement result of the wireless quality, and to update by adding or deleting, if the measurement result of the wireless quality of a first neighbour cell among the neighbour cells is higher or lower than a predetermined threshold for the cell existing at the handover destination of the relay node, the relay node cell to or from a first neighbour cell list of the first neighbour cell, respectively.01-24-2013
20130022026RADIO BASE STATION AND COMMUNICATION CONTROL METHOD - A radio base station according to the present invention includes a measurement instruction unit configured to transmit a control signal for instructing the measurement of the radio quality of a cell during communication or a neighboring cell to a mobile station UE; a reception unit configured to receive a measurement result for each carrier of the two or more carriers from the mobile station UE; and a handover control unit configured to instruct the mobile station UE to change a state of communication with the mobile station based on the measurement result, wherein the handover control unit determines whether to allow the mobile station UE to change the state of communication with the mobile station based on the measurement result for a carrier having received the measurement result, and a measurement result for another carrier other than the carrier.01-24-2013
20080247362METHOD FOR ESTIMATING RECEPTION QUALITY OF COMMUNICATION AREA, APPARATUS THEREOF, AND PROGRAM THEREOF - A reception quality estimating method estimates reception quality of a wireless communication area for estimating success or failure of handover processing occurring in a service area of a wireless communication system including a plurality of base stations. The method includes a first step and a second step. In the first step, the reception qualities of radio waves from the plurality of base stations are grasped at a given location within the service area. In the second step, the start point and end point of the handover processing are estimated by referring to time required for the handover processing, moving speed of a mobile terminal, which are previously input, and the reception qualities, and then success or failure of the handover processing is estimated by referring to the reception qualities of radio waves from the base stations at the start point and end point of the handover processing.10-09-2008
20080232326Method and Apparatus for Reducing Interference in Wireless Communication Networks by Enabling More Opportune Handover - According to the teachings presented herein, wireless communication network interference is reduced by sending handover measurement information from mobile stations in conjunction with sending uplink scheduling requests, and by correspondingly making combined handover and uplink resource scheduling decisions. In this context, the combined decision considers both the handover measurement information and the uplink scheduling request, and determines whether a serving cell grants or denies the request and whether handover from the serving cell to a neighboring cell is or is not initiated for the mobile station. The combined determination provides for timely handover of the mobile station, such as where the mobile station is operating near a cell edge and issues an uplink scheduling request to its currently serving cell.09-25-2008
20080232325Method and System for Generating Antenna Selection Signals in Wireless Networks - A method and system generating signal to select a subset of antennas from a set of antennas to transmit user data in a wireless communication system. User data are transmitted during a first transmission time intervals (TTI) using a first subset of antennas. Pilot tones are transmitted during a second TTI using a second subset of antennas. Corresponding channels are estimated for the first subset of antennas and the second subset of antennas from the user data and the pilot tones. Then, based on the estimating, an optimal subset of antenna is selected from the first subset of antennas and the second subset of antennas to transmit the user data during a sequent TTI, and in which the selecting is performed adaptively.09-25-2008
20100085943HANDOVER OF WIRELESS CONNECTIONS - A connection between a communications terminal and a communications network is arranged such that on detection of imminent degradation or loss of such connection, the utilization of the connection is maximized in advance of such degradation. The network temporarily reallocates the maximum bandwidth that the terminal is capable of using to that terminal, which may result in a small temporary degradation of the bandwidth available to other terminals, and the terminal downloads the data most likely to be required next to a cache (in the case of specific web pages, identified by recent accession, bookmarks, or hyperlinks from the page currently being viewed), or a buffer (if the data is being streamed) using this extra bandwidth made available.04-08-2010
20080225801RADIO MEASUREMENTS IN CELLULAR TELECOMMUNICATION SYSTEMS - A method of assessing for a mobile terminal 09-18-2008
20080225800ACCESS ROUTER AND METHOD OF PROCESSING HANDOVER BY ACCESS ROUTER - An access router including a module buffering first data to be transmitted to a first mobile station, and transmitting the first data to a second access router when the first mobile station moves to the second access router.09-18-2008
20080225799Method and apparatus for performing handover in a digital broadcasting system - A method is provided for performing handover by a terminal in a digital broadcasting system. The method includes measuring strength of a received signal from a serving broadcast transmitter while receiving a broadcast service, and comparing the measured strength of the received signal with a predetermined reference value; periodically measuring strength of the received signal while continuously receiving the broadcast service when the measured strength of the received signal is greater than the reference value; sending a handover start request message for the broadcasting system to a base station of a mobile communication system when the measured strength of the received signal is less than or equal to the reference value; and performing handover from the serving broadcast transmitter to a target broadcast transmitter upon receipt of an accept message for the handover start request for the broadcasting system from the base station.09-18-2008
20120250660MAXIMUM ALLOWED QUALITY OF SERVICE PROCEDURES USING GN/GP - The example embodiments presented herein are directed towards a core network node (10-04-2012
20130170474System and Method for Primary Point Handovers - A method for operating a multiple point (MP) controller includes receiving, from a source primary point, a handover required message for a user equipment coupled to the source primary point, the handover required message including target primary point information and MP radio bearer information. The method also includes determining an MP configuration according to the handover required message, and sending, to a target primary point, a handover request message including the MP configuration and the MP radio bearer information. The method further includes sending, to the source primary point, a handover message including the MP configuration, the MP radio bearer information, and reconfiguration information for the user equipment, the handover message initiating a handover of a subset of the MP radio bearer from the source primary point to the target primary point, and receiving, from the target primary point, a handover complete message.07-04-2013
20130114567SELECTION OF A NETWORK ELEMENT - A method for delivering information on a serving mobile switching centre server for an user equipment between a first communication network and a second communication network. The method includes a step of requesting an attachment of the user equipment to the second communication network by signaling between the user equipment and a network node of the second communication network, the signaling including at least part of information on the mobile switching centre server serving the user equipment in the first communication network. Additionally, an user equipment and a network node implementing the aspects of the method are described.05-09-2013
20130114568BASE STATION, MOBILE STATION, AND METHOD OF CONTROLLING MEASUREMENT RESULT INFORMATION - A base station capable of communications using plural component carriers includes a measurement result receiving unit configured to receive a measurement result of a reception condition from a mobile station, a determining unit configured to determine whether a change of a primary cell or a secondary cell allocated to the mobile station occurs based on the received measurement result, and an initializing unit configured to initialize information including the measurement result of the reception condition received from the mobile station for the component carrier corresponding to the primary cell or the secondary cell which is affected by the change.05-09-2013
20130094475METHOD AND APPARATUS FOR HANDOVER FROM WIRELESS LOCAL AREA NETWORK TO WIRELESS WIDE AREA NETWORK - A method for handover from a wireless local area network to a wireless wide area network and an apparatus supporting the method are provided. When channel interference becomes severe during communication with a wireless local area network, the method enables the apparatus to automatically perform handover to a wireless wide area network. The method includes checking integrity of data received from a wireless local area network, determining, if the received data lacks integrity, whether the received data was received within a threshold time, retrieving, if the received data was received within the preset threshold time, an integrity failure count and a retransmission count for the data from a storage unit, and performing, if the integrity failure count exceeds a maximum allowed number of failures and if the retransmission count exceeds a maximum allowed number of retransmissions, handover from the wireless local area network to a wireless wide area network.04-18-2013
20110268089SYSTEMS AND METHODS FOR PROVIDING CONNECTION STATUS AND LOCATION INFORMATION IN A WIRELESS NETWORKING ENVIRONMENT - A system may provide a client device with a persistent wireless network browser toolbar for use in, for example, a network browser. The persistent wireless network browser toolbar is provided with a login status indicator, a logout option, and a wireless network signal strength indicator.11-03-2011
20100278150METHOD FOR INTER RAT HANDOVER - A method for inter RAT handover is disclosed. The method for inter RAT handover comprises measuring cell quality of WiMAX neighbor cells from a user equipment of E-UTRAN and transmitting the measured result to an origin base station; and if RRC message is received from the origin base station, the RRC message including WiMAX signal, pre-registering with a target WiMAX base station using tunneling based on second layer protocol. Therefore, the user equipment can continue to receive a service with maintaining current service quality even though the user equipment moves to a heterogeneous network. In addition, it is possible to reduce the time required for the user equipment to perform handover to the target base station. Moreover, if there is a failure of a radio link when the user equipment performs handover, it is possible to enable fast recovery.11-04-2010
20080198811WIRELESS NODE SEARCH PROCEDURE - An access terminal scans for nearby access points and maintains a candidate list of access point with which the access terminal may associate in the event the access terminal's communication with its current access point deteriorates for some reason. This search procedure may be performed in a proactive manner whereby the access terminal repeatedly performs scans and updates its list of candidate access points when it is powered on. In some aspects, the search procedure used by the access terminal may be based on a state of the wireless device. In addition, different states of the access terminal may be associated with different optimization criteria.08-21-2008
20090103496BI-DIRECTIONAL HANDOVER METHOD AND APPARATUS - Apparatus for bi-directional handover are disclosed. An apparatus configured to perform handover from a wireless code division multiple access (WCDMA) to a wireless broadband (WiBro) network is disclosed. An apparatus configured to perform handover from a WCDMA network to a WiFi (IEEE 802.11x) network is disclosed. An apparatus configured to perform handover from a WiFi network to a WCDMA network is disclosed.04-23-2009
20090028113RADIO NETWORK CONTROLLER, MOBILE STATION, AND MOBILE COMMUNICATION METHOD - A radio network controller comprises a cell selector configured to select a cell to use by a mobile station after data reception, and a mobile station controller configured to control the mobile station to communicate by radio using the cell selected by the cell selector after the data reception.01-29-2009
20110255517TERMINAL AND THE SCAN METHOD THEREOF - A terminal and a scan method thereof are disclosed in the present invention. The method includes that: a terminal receiving, after accessing a network, a downlink channel descriptor message, and acquiring a scan triggering period table carried in the downlink channel descriptor message; and the terminal performing periodic scan according to the scan triggering period table. According to the technical solution of the present invention, the efficiency for the terminal scanning in different scenes can be effectively improved, and therefore the performance of the system is improved.10-20-2011
20100316022COMMUNICATION ROUTING - A method includes identifying a number of nodes in a network, where the nodes may correspond to cellular communication sites. The method may also include selecting some of the nodes as potential hub nodes and determining, for each of the potential hub nodes, a bandwidth needed to forward traffic from the potential hub node to a mobile switching office. The method may further include determining, for each of the potential hub nodes, bandwidths needed to forward traffic from the potential hub node to other ones of the nodes and calculating, for each of the potential hub nodes, costs or latencies associated with forwarding traffic from the potential hub node to the mobile switching office and to other ones of the nodes. The method may also include selecting a hub node based on the calculated costs and/or latencies.12-16-2010
20130156008Handover Signaling for Beamforming Communications - A serving base station transmits a message to one or more target base station in response to a handover decision for a wireless device supporting beamforming and multiple carrier configurations. The message includes a plurality of measurement configuration parameters for the wireless device. The serving base station receives a response from at least one of the target base stations. The serving base station transmits a handover command to the wireless device subsequent to receiving the response message.06-20-2013
20130156009Beamforming Handover Messaging in a Wireless Network - A serving base station transmits a message to one or more target base station in response to a handover decision for a wireless device supporting beamforming and multiple carrier configurations. The message includes a plurality of measurement configuration parameters for the wireless device. The serving base station receives a response from at least one of the target base stations. The serving base station transmits a handover command to the wireless device subsequent to receiving the response message.06-20-2013
20090274123METHOD OF CELL MEASUREMENT BASED ON CELL RESELECTION AND MEASURED REPORT IN UMTS CELLULAR SYSTEM - A cell measurement method used in a mobile station camping on a serving cell is provided, wherein the serving cell sends system information of neighbor cells to the mobile station. A first set of the neighbor cells is determined based on a measurement rule for cell reselection. A second set of the neighbor cells is determined based on a report request for radio link establishment. A subset is chosen from the second set. Finally, the neighbor cells of a union of the first set and the subset are measured.11-05-2009
20110310852Methods And Arrangements For Handover - Methods and arrangements for autonomous handover are provided. In a step, a mobile terminal sends a measurement report to a first network node. In another step, the mobile terminal starts a timer for measuring a wait period. In a further step, the mobile terminal waits until the wait period has expired. In still another step, the mobile terminal measures a signal used for mobility evaluations from the first radio network node. In yet another step, the mobile terminal performs random access to the second radio network node, if appropriate. Furthermore, the first radio network node sends information about random access channel (RACH) characteristics. Moreover, the first radio network node may send the wait period to the mobile terminal. In another step, the first radio network node sends the terminal context to neighbouring radio network nodes.12-22-2011
20110310851METHOD AND APPARATUS FOR QOS CONTEXT TRANSFER DURING INTER RADIO ACCESS TECHNOLOGY HANDOVER IN A WIRELESS COMMUNICATION SYSTEM - Systems and methodologies are described herein that facilitate efficient transfer of quality of service (QoS) context during inter-radio access technology (RAT) handovers. In particular, techniques are described herein for establishing rules for whether a user equipment unit (UE) or an associated network should establish QoS for a mixed-mode application, identifying flow to bearer mappings when translating QoS across an inter-RAT handover, mapping QoS parameters of respective RATs, mitigating QoS depreciation upon multiple handovers, performing one or more actions if QoS is not acceptable in a new RAT, maintaining QoS during tunnel mode, and handling scenarios in which a UE moves between a RAT using network-initiated QoS and a RAT using UE-initiated QoS.12-22-2011
20110310850METHOD AND APPARATUS FOR QOS CONTEXT TRANSFER DURING INTER RADIO ACCESS TECHNOLOGY HANDOVER IN A WIRELESS COMMUNICATION SYSTEM - Systems and methodologies are described herein that facilitate efficient transfer of quality of service (QoS) context during inter-radio access technology (RAT) handovers. In particular, techniques are described herein for establishing rules for whether a user equipment unit (UE) or an associated network should establish QoS for a mixed-mode application, identifying flow to bearer mappings when translating QoS across an inter-RAT handover, mapping QoS parameters of respective RATs, mitigating QoS depreciation upon multiple handovers, performing one or more actions if QoS is not acceptable in a new RAT, maintaining QoS during tunnel mode, and handling scenarios in which a UE moves between a RAT using network-initiated QoS and a RAT using UE-initiated QoS.12-22-2011
20120287912Method and Apparatus for Resegmentation of Packet Data for Retransmission on HARQ Transmission Failure - A method for packet data retransmission on Hybrid Automatic Repeat Request (HARQ) Transmission failure having the steps of: checking whether changes to HARQ transmission error performance characteristics are greater than a threshold and/or a deterioration of channel conditions is indicated or less than threshold; if yes, re-segmenting an RLC-SDU or RLC-PDU data into smaller PDU data sizes; and transmitting said re-segmented RLC-PDU data; and if not yes, transmitting previous RLC-PDU data.11-15-2012
20090168728METHOD AND APPARATUS FOR CELL RESELECTION - A method and wireless transmit receive unit (WTRU) are disclosed that is configured to perform cell reselection to another cell when the WTRU is in a CELL_FACH state using an Enhanced-Dedicated Channel (E-DCH). The cell reselection is based on internal measurements by the WTRU. Alternatively, the cell reselection can be WTRU based on the WTRU measurements reported to the network.07-02-2009
20120039304SERVER FOR CONTROL PLANE AT MOBILE COMMUNICATION NETWORK AND METHOD FOR CONTROLLING ESTABLISHMENT OF CONNECTION THEREOF - Disclosed is a method of controlling connection establishment in a server in charge of the control plane within a mobile communication network. The method of controlling connection establishment may include receiving a connection request message including a parameter indicating an identifier of a local gateway from a base station. The connection request message may include an access request message by the UE. The method of controlling connection establishment may further include determining whether a bearer for the UE is set to a path through nodes within the mobile communication network or set to a path through nodes within another wired network accessible by the local gateway by considering at least one of QoS, subscriber information for the UE, operator policy if the connection request message is received. If it is set to a path through nodes within the another wired network, the method of controlling connection establishment may further include transmitting a connection response message including a parameter indicating whether the bearer has been set or should be set to a path through nodes within the another wired network and an address of the local gateway to the base station.02-16-2012

Patent applications in class Based upon a particular signal quality measurement

Patent applications in all subclasses Based upon a particular signal quality measurement