Class / Patent application number | Description | Number of patent applications / Date published |
455449000 | Hierarchical cell structure | 34 |
20080274746 | Scheduling Methods and Systems for Wireless Multi-Hop Relay Communications - A scheduling method for a wireless multi-hop relay communication system, wherein the communication system includes a base station dominating a plurality of relay stations, the scheduling method including separating the plurality of relay stations into N groups, N being a natural number, dividing a period for providing a service by the base station into N phases, wherein N is the number of the groups of the relay stations, serving the relay stations in a j | 11-06-2008 |
20100029287 | Method for reactivating connections in a cellular telephony system - A method for a cellular communications system ( | 02-04-2010 |
20100075684 | CELL INFORMATION TRANSMISSION METHOD AND USER APPARATUS IN MOBILE COMMUNICATIONS SYSTEM - A method of transmitting cell information is disclosed. The method includes the steps of transmitting a primary broadcast channel at constant intervals in a cell of a mobile communications system; broadcasting, in the primary broadcast channel, scheduling information indicating a location of a first scheduling unit, including information to be broadcast in the cell; and broadcasting, in the first scheduling unit, information indicating whether the cell is a dominant cell or a subordinate cell. | 03-25-2010 |
20100113039 | WIRELESS MACRO CELL OVERLAY - Overlaying a Wireless Macro Cell architecture on a Micro Cell network. WLAN MAC Address Translation (WMAT) is used to translate BSSIDs from the BSSID used to initialize a radio in an access node and identify communications between the radio in the access node and a controller, and the BSSID used over the air for Macro Cell operation. WMAT is used for transmit operations, translating the BSSID of outgoing packets to the Macro Cell BSSID prior to wireless transmission. On the receive side, packets undergo WMAT and transmission to the controller if the STN MAC address of the sender is in an ACK table associated with the radio, or the packet is one of a predetermined type. The ACK table is managed by transmit operations, and by control commands from the controller. | 05-06-2010 |
20100216477 | SYSTEMS AND METHODS FOR USAGE-BASED RADIO RESOURCE MANAGEMENT OF SELF-OPTIMIZING CELLS - Systems and methods are described for allocating frequency resources based on historical usage data in a wireless communication system. A base station tracks its local usage pattern to generate a set of historical usage statistics. The base station may share those statistics with another base station node in the same network and with a server. The server may generate a frequency resource allocation plan to allocate shared resources most efficiently to various base stations based on historical usage information. Allocating frequency resources in this manner reduces the probability of cochannel interference between nearby cells and optimizes power solutions for local and regional radio access networks. | 08-26-2010 |
20100222062 | METHOD, APPARATUS AND SYSTEM FOR INTERFERENCE AVOIDANCE IN A FEMTOCELL NETWORK - A method of providing interference avoidance in a femtocell network may include receiving, at a femtocell base station defining a femtocell coverage area, an allocation of reserved resources for control signaling and data transmission in which the allocation is received from a macro cell base station defining a macro cell coverage area. The femtocell base station may be located and the femtocell includes a portion of the macro cell coverage area. The method may further include enabling usage of the reserved resources by the femtocell base station responsive to receipt of the allocation to provide interference avoidance with respect to femtocell and macro cell communications. The method may further include disabling usage of the reserved resources by the macro cell base station responsive to the allocation of the reserved resources. | 09-02-2010 |
20110263264 | METHOD FOR OPERATION OF A WIMAX NETWORK AND WIMAX NETWORK - A method for operation of a WiMAX network, the network including a WiMAX macrocell network with one or more macrocell base stations and at least one femtocell base station, the macrocell base stations and the at least one femtocell base station being configured to offer connectivity to mobile stations is described. The method is characterized in that a communication scheme between the macrocell network and the at least one femtocells base station is defined according to which a direct wireless link is established between the at least one femtocell base station and one or more of the macrocell base stations located within the coverage area of the at least one femtocell base station. Furthermore, a corresponding WiMAX network is disclosed. | 10-27-2011 |
20110281590 | Establishment of New Base Station in Cellular Network - A method, apparatus, and computer program for authenticating a newly activated local area base station in a cellular network is presented. The newly activated local area base station, associated with a sub-cell located within a coverage area of a wide area base station of a cellular telecommunication system, is paired with the wide area base station on the basis of information enabling identification of the wide area base station and originating from the local area base station. Then, transfer of a radio communication identifier to the local area base station is arranged over a wired connection. | 11-17-2011 |
20120083282 | COMMUNICATION METHOD OF MACRO BASE STATION, MACRO TERMINAL, MICRO BASE STATION, AND MICRO TERMINAL FOR INTERFERENCE CONTROL IN HIERARCHICAL CELLULAR NETWORK - A communication method of a macro base station, a macro terminal, a micro base station, and a micro terminal determines an interference control scheme for each interference condition between a micro cell and a micro cell and between a macro cell and a micro cell in a hierarchical cellular network, and controls interference in the hierarchical cellular network where a detailed operation for each determined interference control scheme, a message associated with the detailed operation, and a resource management scheme are defined. | 04-05-2012 |
20120142362 | ACCESS CONTROL METHOD FOR CERTAIN USER TARGETED BASE STATION, BASE STATION APPARATUS AND MOBILE COMMUNICATION MANAGEMENT APPARATUS - In a mobile communication system including Home eNBs, information on mobile stations permitted to access each Home eNB are registered, and the permitted mobile stations are connected to the Home eNB at substantially the same time as the registration of the access permission. In order to control access to a user targeted base station, the information on mobile stations permitted to access the user targeted base station is supplied to the user targeted base station. The information on the mobile stations is transmitted to a mobile communication management apparatus. The mobile station registration is stored in the mobile communication management apparatus in association with the user targeted base station. When the mobile station has entered a location registration area covering the user targeted base station or exists in the location registration area, the mobile communication management apparatus transmits connection information for the user targeted base station to the mobile station. | 06-07-2012 |
20120165028 | METHOD OF CONTROLLING TRANSMISSION POWER OF FEMTOCELLS FOR INTERFERENCE CONTROL - Disclosed is a method of controlling transmission power of femtocells for interference control. The method includes (a) setting transmission power of femtocells to initial transmission power, (b) establishing inequalities between received signal to interference ratios (SIRs) of I user terminals and SIRs satisfying service requirements of the terminals as I simultaneous inequalities, (c) identifying whether the inequalities constituting the simultaneous inequalities are satisfied, and (d) maintaining currently adjusted transmission power and stopping transmission power adjustment of the femtocells if all the inequalities are satisfied in operation (c), wherein operations (c) and (d) are iterated while inequalities are sequentially selected one by one from at least some inequalities if at least some inequalities are not satisfied in operation (c) and transmission power is adjusted one by one in terms representing the transmission power of femtocells in the inequalities. | 06-28-2012 |
20120214497 | APPARATUS AND METHOD FOR HIERARCHICAL RATE SPLITTING IN HIERARCHICAL CELL COMMUNICATION SYSTEM - Provided is a hierarchical rate splitting method and apparatus in a hierarchical cell communication system. An upper node or a macro base station may adaptively determine a hierarchical splitting mode based on a channel condition of a channel between the macro base station and a macro terminal and/or a performance of pico terminals in comparison to a performance of the macro terminal. | 08-23-2012 |
20120214498 | LARGE CELL BASE STATION AND COMMUNICATION CONTROL METHOD - Disclosed is a large cell base station ( | 08-23-2012 |
20120238278 | DISTRIBUTED POWER LEVEL SELECTION METHOD AND SYSTEM FOR CELLULAR WIRELESS NETWORKS UNDER JOINT CONSTRAINTS - A distributed method and system are presented for determining the largest Signal-to-Interference-and-Noise Ratio (SINR) that can be achieved by a plurality of small wireless cells, such as femtocells or picocells, while satisfying a specified SINR value for multiple large cells, referred to as macrocells. The method also determines the minimum power levels at each of the femtocells that achieve the maximum SINR for the femtocells. The distributed synchronous algorithm executes all intensive computations independently, locally at each of the femtocells. The computations are synchronized in time and executed simultaneously at all cells where after each of the iterations information of interim power selections at the multiple cells is exchanged among the femtocells. Eventually, the computations converge to the maximum SINR value and the corresponding minimum-power solution. | 09-20-2012 |
20120238279 | TRANSMISSION POWER COORDINATION FOR SMALL-COVERAGE BASE STATIONS - Coordinating transmission power for small-coverage base stations deployed in a wireless communication network may comprise, for example, receiving a plurality of measurement reports corresponding to two or more base stations, determining a coordinated coverage condition for the base stations, and setting a transmission power for at least one of the base stations based on the measurement reports and the coverage condition. | 09-20-2012 |
20120244869 | NETWORK SCALING FOR NETWORK ENERGY SAVINGS - Methods, systems, devices, and computer program products are described for network scaling. In one example, candidate cells may be selected and ranked. For an initial assessment, the selected cells may operate at a significantly reduced power, and the network performance may be evaluated. Based on the results, only a subset of the candidate cells may be switched off. The whole process may be repeated until all the candidate cells are evaluated. Network downscaling may be done at a site level, a sector level, or a hybrid (site level first, and then additional downscaling by sector level). | 09-27-2012 |
20120252469 | RADIO COMMUNICATION SYSTEM, HIGH-POWER BASE STATION, LOW-POWER BASE STATION, AND COMMUNICATION CONTROL METHOD - A high power base station ( | 10-04-2012 |
20130150057 | METHOD OF ASSIGNING PHYSICAL LAYER CELL IDENTITY OF FEMTOCELL BASE STATION - Provided is a method of assigning a physical layer cell identity (PCI) to a femtocell base station. The method includes obtaining location information from a femtocell base station and storing the location information, a first step of determining whether a PCI does not collide and is not confused with PCIs of base stations present in an area having a radius of a first multiple of a the femtocell radius and a second step of determining whether a PCI does not collide and is not confused with PCIs of base stations present in an area having a radius of a second multiple of the femtocell radius when a PCI does not collide and is not confused with PCIs of base stations is not found in an area having a radius of a first multiple of the femtocell radius. | 06-13-2013 |
20130190000 | Fractional Frequency Re-Use and Beamforming in Relay Nodes of a Heterogeneous Network - Methods of operating a base station serving a cell in a heterogeneous network and at least one relay node serving a subcell of the cell, in which a user equipment unit connects to the network via the base station or the relay node, are provided. The methods include receiving uplink access (Uu) signals at the relay node from the user equipment unit in a first frequency range, and transmitting uplink backhaul (Un) signals from the relay node to the base station in a second frequency range that is different from the first frequency range. | 07-25-2013 |
20130203425 | DYNAMIC MANAGEMENT OF SMALL CELLS FOR OPTIMIZING THE ENERGY CONSUMPTION OF A NETWORK - The invention relates to a method for managing a network of a plurality of base stations of small cells, placed in a region of a macrocell in which at least one terminal is found, each small cell base station being adapted for covering a small cell, the method being characterized in that:
| 08-08-2013 |
20130217397 | SYSTEM, METHOD, AND COMPUTER-READABLE MEDIUM FOR PROCESSING CALL ORIGINATIONS BY A FEMTOCELL SYSTEM - A system, method, and computer readable medium comprises receiving, by a femtocell system, a call origination from a user equipment performing a calling operation to a called telephone device generating a configuration management service request message and transmitting the configuration management service request message to a session initiation protocol to Internet operating system adapter (SIA), generating a channel assignment request by the SIA and transmitting the channel assignment request to the femtocell system, allocating a channel for the user equipment and transmitting the allocated channel to the user equipment, receiving an acknowledgement from the user equipment in receipt of the transmitted channel assignment, performing a service connection with the user equipment, creating a connection for an Internet Protocol Multimedia Subsystem, completing a call setup between the user equipment and the called telephone device via the allocated channel. | 08-22-2013 |
20130324137 | Communication System, Method and Device - A communication system and method are provided. The communication system includes a master base station, a slave base station and a remote radio unit (RRU); where a cell controlled by the slave base station is included in cells controlled by the master base station. The master base station is configured to receive downlink data and send the downlink data to the slave base station; and the slave base station corresponds to a transmission channel identifier of the downlink data. The slave base station is configured to receive the downlink data sent by the master base station, convert the downlink data into air interface downlink vector data, and send the air interface downlink vector data to the RRU. The RRU is configured to convert the air interface downlink vector data into analog data and send the analog data to a user equipment, thereby realizing data transmission. | 12-05-2013 |
20140080492 | VARIOUS ROUTING ARCHITECTURES FOR DYNAMIC MULTI-HOP BACKHAULING CELLULAR NETWORK AND VARIOUS METHODS USEFUL IN CONJUNCTION THEREWITH - A hierarchical cellular network administration system operative to administrate for a hierarchical cellular network having a core, the hierarchical cellular network administration system comprising a link establishment initiator operative to generate link establishment commands; and relay manager functionality operative to establish at least one link between at least one relay in the hierarchical cellular network and all nodes in said cellular network desired to be served by said at least one relay, as per said link establishment commands generated by the link establishment initiator; and to control operation of links thus established. | 03-20-2014 |
20140141788 | METRO CELL PLANNING - Dynamic metro cell location planning is provided within the wireless communication coverage area of a macro cell. Metro cell location planning can include obtaining performance parameters associated with the macro cell and evaluating coverage parameters of the macro cell. Metro cell location planning can also include selecting, based on the performance parameters and the coverage parameters, a location within a wireless communication coverage area of the macro cell for placement of the metro cell. The selected location can be conveyed to a user and/or entity for deployment of the metro cells. Metro cells can be used by a carrier to fill a coverage hole and/or to offload capacity hot-spots within the network. | 05-22-2014 |
20150017996 | COMMUNICATION CONTROL DEVICE, COMMUNICATION CONTROL METHOD, AND COMMUNICATION CONTROL PROGRAM - Provided is a communication control device including an allocation unit that allocates transmit power to each of one or more small cells so as to moderate interference on a macro cell of a radio communication system from each small cell that at least partially overlaps with the macro cell, a judgment unit that, in a case in which there exists a second small cell that exerts interference exceeding an allowed level on a first small cell, judges whether the interference is unidirectional or bidirectional, and a control unit that controls the interference between the first small cell and the second small cell with a technique that differs according to a judgment result by the judgment unit. | 01-15-2015 |
20150296547 | Method and Device for Increasing Gateway Capacity in LTE Mode Femto Cell System - A method for increasing gateway capability in a long term evolution system (LTE) standard Femto cell system comprises: a gateway (HeNB GW) determining that multiple S1 links are required to be established between the HeNB GW and a single mobility management entity (MME); the HeNB GW setting different Global eNB identifiers (Global eNB IDs) for each S1 link required to be established, and initiating an S1 setup request to the single MME respectively, carrying S1 application configuration information at the same time; and the HeNB GW establishing multiple S1 links between the HeNB GW and the single MME based on the S1 setup request and the S1 application configuration information. | 10-15-2015 |
20150327082 | A METHOD TO GUIDE THE PLACEMENT OF NEW SMALL CELL - A method to guide the placement of new small cell, wherein a small cell is a radio cell station with much smaller coverage area than a macro cell, having one or more existing wireless cells, one or more mobile devices of known location and application use and context, a processor and database system, a new small cell, a device for guiding the user in the placement of the new small cell, includes the steps: the location dependant measured network characteristics and location dependant contextual data needs of the mobile device are recorded and stored in the database system over time; and the contents of the database system are used to determine the likely future location specific network needs, such that this information together with the characteristics of the new small cell are used to determine the placement co-ordinates of the new small cell, and use the placement co-ordinates to guide a user in the placement of the new small cell, with the device for guiding the user | 11-12-2015 |
20150341838 | TECHNIQUES FOR DEPLOYING SMALL CELLS AS SECONDARY CELLS FOR USER EQUIPMENT - Examples are disclosed for deploying small cells as secondary cells for user equipment (UE). The examples include an UE, one or more small cell evolved node B (eNBs) or a macro cell eNB gathering information and reporting the gathered information to a management entity for an evolved packet core. The gathered information may be associated with the one or more small cell eNBs serving as a secondary cell for the UE while the macro cell eNB may serve as a primary cell. In some examples, the gathered information may be reported in one or more minimization of drive tests (MDT) reports. The MDT reports may be sent to the management entity by the UE, small cell eNBs or macro cell eNBs for the management entity to manage deployment of the one or more small cell eNBs. Other examples are described and claimed. | 11-26-2015 |
20150350920 | Self-Organizing Wireless Backhaul Among Cellular Access Points - Described herein are techniques preparing a wireless backhaul among cellular access points. The cellular access points may obtain either (i) locations of themselves and other devices or (ii) instructions for adjusting position of wireless transceivers of the cellular access points. Based at least in part on the locations or instructions, the cellular access points may adjust positions of the wireless transceivers and initiate wireless connections via the wireless transceivers. The cellular access points may receive the locations or instructions from a server of the telecommunication network, which may determine pairs of the cellular access points based at least in part on the locations of the cellular access points. | 12-03-2015 |
20150358833 | COMMUNICATION CONTROL APPARATUS, RADIO BASE STATION APPARATUS, RADIO TERMINAL APPARATUS, AND COMMUNICATION CONTROL METHOD - A communication control apparatus in a wireless communication system having an area in which coverage areas of a macro cell base station and a small cell base station using different frequency bands overlap includes a storage unit configured to store small cell base station information indicating whether the small cell base station is present within the coverage area of the macro cell base station, and a control unit configured to instruct a radio terminal apparatus present within the coverage area of the macro cell base station to perform quality measurement in a frequency band of the small cell base station when the small cell base station is present within the coverage area of the macro cell base station based on the small cell base station information. | 12-10-2015 |
20160007210 | EFFICIENT EVALUATION OF HOTSPOTS FOR METROCELL DEPLOYMENT - Session data for sessions associated with user equipment in portions of a macrocellular coverage area is accessed and a hierarchical data structure including a plurality of levels is generated. Each entry in a higher level of the plurality of levels encompasses a predetermined number of entries in the next lower level and stores aggregated session data for sessions associated with the encompassed entries. Entries in the hierarchical data structure can be selected to represent a hotspot that overlays the macrocellular coverage area. Session data stored in the selected entries can be aggregated. | 01-07-2016 |
20160007211 | COMMUNICATION SYSTEM - A communication system is provided that, if a large number of small cells are installed, is capable of configuring an operation suitable for small cells through simple operation and administration. If a small cell installed in Step ST | 01-07-2016 |
20160073273 | Activation Mechanism for Small Cells - A method for activation of a wireless communications link between a terminal (UE) and a first base station (SCeNB) under control of a second base station (MeNB), the method includes: the second base station (MeNB) sending a first activation request signal to the terminal (UE); and the terminal (UE), in response to the first activation request signal, sending a second activation request signal to the first base station (SCeNB). The terminal therefore acts as proxy for communicating an activation request from the second base station to the first base station. This is useful in Small Cell scenarios where backhaul latency may delay an activation request over the X2 interface between the base stations. | 03-10-2016 |
20160255512 | CELL ID ALLOCATION IN A HETEROGENEOUS NETWORK | 09-01-2016 |