Patent application number | Description | Published |
20110013598 | PERFORMING PROCESSING WITH RESPECT TO AN OVERHEAD MESSAGE FOR A MOBILE STATION IN TUNNEL MODE - A mobile station determines whether the mobile station is receiving an overhead message in tunnel mode during a handover procedure of the mobile station from a source wireless access network to a target wireless network. The source and target wireless access networks are according to different technologies. In response to determining that the mobile station is in the tunnel mode, tunnel mode processing of the overhead message is performed. In response to determining that the mobile station is not in the tunnel mode, different processing of the overhead message is performed. | 01-20-2011 |
20110038308 | FORMING SPATIAL BEAMS WITHIN A CELL SEGMENT - To perform wireless communications in a wireless network, at least two spatial beams are formed within a cell segment, where the at least two spatial beams are associated with different power levels. The at least two spatial beams are swept across the cell segment according to a sweep pattern. In some implementations, multiple antenna assemblies can be used, where each antenna assembly has plural antenna elements. A lower one of the antenna assemblies can be used to form high and lower power beams, and an upper one of the antenna assemblies can be used to communicate backhaul information, for example. | 02-17-2011 |
20110039543 | Performance for a Multiple Antenna Beamforming Cellular Network - The present invention provides for an improved application of signal strength weightings in a SDMA sectorized cellular network. The improved signal strength weightings application is conducted through the improved selection of weightings from a new codebook subset or by the selection of weightings from a larger codebook subset. In a further embodiment, an antenna beam index or bit map can be used to select the best beam(s) in a SDMA sectorized cellular network. In another embodiment, a field or factor in an uplink or downlink transmission packet can designate which directional transmission beam is best suited for the transmission or when the directional transmission beam should be activated. | 02-17-2011 |
20110065448 | System and Method for Supporting Antenna Beamforming in a Cellular Network - The present invention is a method and system for supporting a beamfonming antenna system in a mobile broadband communication network with an improved beam pattern, beam sweep pattern, pilot channel design with feedback and reporting rules, and control signaling design. Specifically, the improved beam pattern includes a method of supporting wireless communications in a wireless network forming at least two spatial beams within a cell segment where the at least two spatial beams are associated with different power levels, and separately, where at least two spatial beams can be moved across the cell segment according to a unique sweep pattern. The pilot channel design improves network bandwidth performance and improve user mobility tracking. Feedback and reporting rules can be established using a particular field designator, CQI, in the preferred embodiment. | 03-17-2011 |
20110092243 | CONTROLLING ALLOCATION OF A PORTION OF A SHARED CHANNEL TO USE FOR CONTROL INFORMATION - To control allocation of a portion of a shared channel to use for control information, a base station determines an amount of resource elements of the shared channel to use for the control information in place of traffic data. The base station sends, to a mobile station, an indication relating to an offset parameter, where the indication is provided to allow the mobile station to compute a value for the offset parameter such that the mobile station can determine the amount of the resource elements of the shared channel to allocate for the control information. | 04-21-2011 |
20110199982 | PROCESSING INFORMATION BLOCKS FOR WIRELESS TRANSMISSION - In general, according to an embodiment, a wireless transmitter includes a plurality of coding and modulation modules to apply corresponding coding and modulation algorithms to input information blocks. A discrete Fourier transform (DFT) precoder applies DFT processing to outputs of the coding and modulation modules, and an inverse fast Fourier transform (IFFT) module receives a DFT output of the DFT precoder, which is mapped to different subcarriers according to the resource allocation indicated by the base station, and applies IFFT processing to the DFT output. An output processing stage produces output signals based on the output of the IFFT module to transmit wirelessly to a wireless receiver. In a different implementation, the outputs of the coding and modulation modules can be provided to an IFFT module to produce IFFT-processed output information. | 08-18-2011 |
20110274012 | TRANSITIONING OF A PACKET-SWITCHED EMERGENCY CALL BETWEEN FIRST AND SECOND TYPES OF WIRELESS ACCESS NETWORKS - A mobile station that is initially attached to a first type of wireless access network is involved in a packet-switched emergency call. Upon detection of transitioning of the mobile station, a message is sent indicating transitioning of the mobile station from the first type wireless access network to the second type wireless access network to cause the packet-switched emergency call to be performed over the second type wireless access network. | 11-10-2011 |
20110274066 | PROVIDING A DOWNLINK CONTROL STRUCTURE IN A FIRST CARRIER TO INDICATE CONTROL INFORMATION IN A SECOND, DIFFERENT CARRIER - A mobile station receives a downlink control structure in a first carrier, where the downlink control structure indicates that control information for the mobile station is on a second, different carrier. The mobile station decodes the control information in the second carrier, where the control information specifies resource allocation of a wireless link for the mobile station. More specifically, according to some implementations, the control channel in the first carrier specifies the resource allocation for an extended control channel in the second carrier, where the extended control channel specifies the resource allocation for traffic data of a wireless link for the mobile station. | 11-10-2011 |
20120243430 | Downlink MCS Selection in a Type 2 Relay Network - A method for selecting an MCS for a cell in which one or more Type 2 relay nodes are present. The method includes the access node for the cell estimating the quality of the link between a relay node in the cell and a UA in the cell and using the estimate to select an MCS for the cell. | 09-27-2012 |
20130028199 | Method and System for Control Format Detection in Heterogeneous Cellular Networks - A user equipment having a first mechanism to obtain a control region size of a sub-frame of a cell, the user equipment having a processor; and a communications subsystem, wherein the processor and communications subsystem are configured to cooperate to: determine having a first mechanism to obtain a control region size of a sub-frame of the first cell, second cell, or both, whether the user equipment is within an area of the second cell; and utilize, a second mechanism to obtain a control region size of a sub-frame of the second cell while the user equipment is within the area of the second cell. | 01-31-2013 |
20130034043 | ALLOCATING BACKHAUL RESOURCES - Systems, apparatuses, and methods may be directed to operating wireless communication resources for a wireless communications system that includes a relay node and a base station. A backhaul link data rate may be identified for a first wireless link between the relay node and the base station. An access link data rate may be identified for a second wireless link between the relay node and a user equipment (UE). The allocation of available resources between the backhaul link and the access link may be adjusted or changed to optimize the allocation of resources. | 02-07-2013 |
20130039268 | Method and System for Signaling in a Heterogeneous Network - A method at a network element operating in a wireless network, wherein the network element is configured to transmit a default cell search signal at a default position in one or more subframes, the method comprising transmitting, by the network element, an auxiliary cell search signal in addition to the default cell search signal. | 02-14-2013 |
20130064168 | Physical Uplink Shared Channel Demodulation Reference Signal Design for Uplink Coordinated Transmission in Type II Relay Using a Punctured Demodulation Reference Signal - A method is provided for providing an access node with a demodulation reference signal (DMRS). The method includes, when the UE and at least one relay node are present in a cell, the relay node transmitting the DMRS on a subset of a set of resource elements in which the UE transmits the DMRS. | 03-14-2013 |
20130064169 | Physical Uplink Shared Channel Demodulation Reference Signal Design for Uplink Coordinated Transmission in Type II Relay - A method is provided for an access node to perform channel estimation. The method includes, when a UE and a relay node are present in a cell with the access node, the access node receiving from the UE and from the relay node DMRS that are cyclically shifted relative to one another. The method further includes the access node performing a first channel estimation based on the DMRS that was transmitted by the UE, performing a second channel estimation based on the DMRS that was transmitted by the at least one relay node, combining the first channel estimation with the second channel estimation to derive a combined channel estimation, using the first channel estimation to demodulate control information received from the UE, and using the combined channel estimation to demodulate data received from both the UE and the at least one relay node. | 03-14-2013 |
20130077506 | System and Method for Association and Uplink Adaptation in a Relay Network - In a system for allocating resources of a wireless communication system power levels of downlink (DL) communication channels and coupling losses of uplink (UL) communication channels are determined. When the power level of the DL communication channel between a base station and a UA is greater than the power levels of the DL communication channels between each of a plurality of RNs and the UA, and the coupling losses of the UL communication channel between at least one of the RNs and the UA are less than the coupling losses of the UL communication channel between the base station and the UA, a DL communication channel resource on the base station to the UA, and a UL communication channel resource on the at least one of the plurality of RNs to the UA are allocated. | 03-28-2013 |
20130079048 | Method and System for Small Cell Discovery in Heterogeneous Cellular Networks - A method and user equipment in a network having a macro cell and at least one small cell, the method receiving, from a network element, a plurality of small cell measurement configurations and at least one condition for utilizing each of the plurality of small cell measurement configurations; determining whether a condition is satisfied for one of the plurality of small cell measurement configurations; and configuring small cell measurement on the user equipment based on the one of the plurality of small cell measurement configurations for which the condition is satisfied. Further, a method at the network element, the method sending, from the network element to at least one user equipment, a plurality of small cell measurement configurations and at least one condition for utilizing each of the plurality of small cell measurement configurations. | 03-28-2013 |
20130089040 | Interference Management in a Wireless Network - A method for interference management at a network element within a wireless telecommunications network, and the network element and user equipment, the method coordinating transmission of cell specific resource elements with at least one other network element; and transmitting the cell specific resource element to a user equipment concurrent to a resource element transmission from the at least one other network element. Also a method for interference avoidance at a network element operating within a wireless telecommunications network, and the user equipment and network element, the method receiving interference information from a user equipment; providing the interference information to at least one interfering network element; and precoding transmissions to the use equipment for interference cancellation. | 04-11-2013 |
20130095748 | System and Method for Modulation and Coding Scheme Adaptation and Power Control in a Relay Network - A method for determining a Modulation and Coding Scheme (MCS) and power control includes determining an error rate of a communication channel between the UA and at least one of the base station and the RN. When the error rate is below a first threshold, the method includes at least one of increasing the MCS, and reducing a transmission power of the UA. When the error rate is above a second threshold, the method includes at least one of decreasing the MCS, and increasing a transmission power of the UA. | 04-18-2013 |
20130114756 | PUSCH Reference Signal Design for High Doppler Frequency - A method is provided for communication in a wireless telecommunication system. The method comprises transmitting, by a UE, a DMRS, wherein REs carrying the DMRS are separated into a plurality of portions, each of the portions occupying a different OFDM symbol in a single slot of a radio subframe. In one aspect, a new PUSCH DMRS format may provide accurate channel estimates, increased RS density in the time domain at the expense of relaxed PAPR, and/or a symmetric pattern to ease the channel estimation algorithm. The PUSCH DMRS format may provide sufficient RS density in the time domain to enable accurate channel estimation for high Doppler scenarios. | 05-09-2013 |
20130223235 | Idle Mode Hybrid Mobility Procedure in a Heterogeneous Network - A UE comprising a processor configured to perform cell selection based on range expansion according to a cell selection criteria that considers both a control channel quality and a data channel quality and further according to a cell ranking criterion. A fall back cell selection may be provided if a coverage hole is detected. | 08-29-2013 |
20130244664 | MOBILITY PARAMETER ADJUSTMENT AND MOBILITY STATE ESTIMATION IN HETEROGENEOUS NETWORKS - Systems and methods for mobility parameter adjustment and mobility state estimation in heterogeneous networks are provided. The mobility parameters may be adjusted based on the cell change types associated with the mobility procedure. The mobility procedure may be a cell handover procedure or a cell reselection procedure. The cell change type may be dependent on the transmission power level of the UE's serving cell and neighboring cells. In some implementations, the UE may provide a speed information to the serving cell such that the serving eNB may prioritize or optimize the mobility procedure for the UE. The UE may also estimate its mobility state by counting the number of cell changes within certain period of time and applying scaling factors to the number of cell changes based on the associated cell change types. | 09-19-2013 |
20130265966 | Supplemental Node Transmission Assistance in a Wireless Network - Supplemental node transmission assistance in a wireless network provides for transmissions between a wireless network and wireless user equipment in a first direction using a serving node of the wireless network while providing for transmissions between the wireless network and wireless user equipment in a second direction using a supplemental node of the wireless network. The supplemental node is selected based on providing better channel conditions between the network and the user equipment in the second direction than the serving node. The supplemental node thus provides transmission assistance for the serving node in order to provide the best available downlink and uplink communications between the user equipment and the network. | 10-10-2013 |
20130272169 | HARQ FOR DYNAMIC CHANGE OF THE TDD UL/DL CONFIGURATION IN LTE TDD SYSTEMS - Systems, methods, and apparatuses are directed to reconfiguring a time division duplex (TDD) uplink/downlink (UL/DL) configuration. A first TDD UL/DL configuration can be identified for a first radio frame. A second TDD UL/DL configuration can be identified for a second radio frame adjacent the first radio frame. The second TDD UL/DL configuration can be identified based, at least in part, on one or more subframes of the second TDD UL/DL configuration that can communicate hybrid automatic repeat request (HARQ) acknowledgement/negative acknowledgement (ACK/NACK) indicators for corresponding subframes of the first TDD UL/DL configuration. | 10-17-2013 |
20130303153 | METHOD AND SYSTEM FOR LOW POWER DOWNLINK TRANSMISSION IN HETEROGENEOUS NETWORKS - A method and user equipment for providing channel quality indicator feedback, the method receiving, at the user equipment, a power offset value; measuring, at the user equipment, a channel quality indicator over a reference symbol resource element; and scaling, at the user equipment, the channel quality indicator using the power offset value during an almost blank subframe. Also, a method and network element for coordination between network nodes in a heterogeneous network, the method receiving, at a first network node, load information from at least one other network node; configuring an almost blank subframe (ABS) pattern and a power offset value based on the received load information; providing the power offset value to at least one other network node; and signalling at least one of the power offset value and an ABS threshold value to at least one user equipment. | 11-14-2013 |
20130315092 | USER EQUIPMENT BATTERY SAVING IN A HETNET DEPLOYMENT WITH EICIC - Devices and methods are provided for reducing client node power consumption when monitoring first and second channels corresponding to first and second access nodes in a heterogeneous wireless-enabled communications environment. Enhanced Inter-Cell Interference Coordination (eICIC) operations are performed to mitigate interference between a first access node and a second access node. The client node monitors first and second channels corresponding to the first and second access nodes. The client node receives restricted measurement data transmitted on the first channel, which is then processed to schedule cessation of monitoring the first channel to reduce power consumption and thereby conserve battery resources. | 11-28-2013 |
20130343311 | Providing a Downlink Control Structure in a First Carrier to Indicate Control Information in a Second, Different Carrier - A mobile station receives a downlink control structure in a first carrier, where the downlink control structure indicates that control information for the mobile station is on a second, different carrier. The mobile station decodes the control information in the second carrier, where the control information specifies resource allocation of a wireless link for the mobile station. More specifically, according to some implementations, the control channel in the first carrier specifies the resource allocation for an extended control channel in the second carrier, where the extended control channel specifies the resource allocation for traffic data of a wireless link for the mobile station. | 12-26-2013 |
20130343477 | PUSCH Reference Signal Design for High Doppler Frequency - A method is provided for communication in a wireless telecommunication system. The method comprises transmitting, by a UE, a DMRS, wherein REs carrying the DMRS are separated into a plurality of portions, each of the portions occupying a different OFDM symbol in a single slot of a radio subframe. In one aspect, a new PUSCH DMRS format may provide accurate channel estimates, increased RS density in the time domain at the expense of relaxed PAPR, and/or a symmetric pattern to ease the channel estimation algorithm. The PUSCH DMRS format may provide sufficient RS density in the time domain to enable accurate channel estimation for high Doppler scenarios. | 12-26-2013 |
20140044054 | METHOD AND SYSTEM HAVING REFERENCE SIGNAL DESIGN FOR NEW CARRIER TYPES - A method and network element for providing reference signals to a user equipment, the method determining a reference signal pattern at the network element; and sending the reference signals to the user equipment using a reference signal mapping based on the reference signal pattern. Further a method and user equipment for receiving reference signals from a network element, the method determining a reference signal mapping at the user equipment; and detecting the reference signals at the user equipment using the reference signal mapping. | 02-13-2014 |
20140044104 | METHOD AND SYSTEM HAVING REFERENCE SIGNAL DESIGN FOR NEW CARRIER TYPES - A method and network element for providing reference signals to a user equipment, the method determining a reference signal pattern at the network element; and sending the reference signals to the user equipment using a reference signal mapping based on the reference signal pattern. Further a method and user equipment for receiving reference signals from a network element, the method determining a reference signal mapping at the user equipment; and detecting the reference signals at the user equipment using the reference signal mapping. | 02-13-2014 |
20140045507 | CODE RATE ADAPTATION IN WIRELESS COMMUNICATION SYSTEMS - Systems, methods, and apparatuses for transmitting physical hybrid automatic repetition request indicator channel (PHICH) signals using adaptive code rates are provided. In accordance with one implementation, various PHICH code rates may be supported by configuring a different number of resource element groups (REGs) to transmit the PHICH signal. The information regarding the REGs may be transmitted to a user equipment (UE) in a radio resource control (RRC) message or in an uplink grant message or in a medium access control (MAC) control element. Correspondingly, the UE may detect the PHICH signal with adaptive code rate on the indicated REGs. Furthermore, channel state information (CSI) may be transmitted from the UE to a base station to indicate the measured PHICH quality, such that the base station may determine appropriate PHICH code rate for the UE based on the CSI information. | 02-13-2014 |
20140045508 | CODE RATE ADAPTATION IN WIRELESS COMMUNICATION SYSTEMS - Systems, methods, and apparatuses for transmitting physical hybrid automatic repetition request indicator channel (PHICH) signals using adaptive code rates are provided. In accordance with one implementation, various PHICH code rates may be supported by configuring a different number of resource element groups (REGs) to transmit the PHICH signal. The information regarding the REGs may be transmitted to a user equipment (UE) in a radio resource control (RRC) message or in an uplink grant message or in a medium access control (MAC) control element. Correspondingly, the UE may detect the PHICH signal with adaptive code rate on the indicated REGs. Furthermore, channel state information (CSI) may be transmitted from the UE to a base station to indicate the measured PHICH quality, such that the base station may determine appropriate PHICH code rate for the UE based on the CSI information. | 02-13-2014 |
20140092785 | Methods and Apparatus for Enabling Further L1 Enhancements in LTE Heterogeneous Networks - A network element in a first cell in a wireless telecommunication network is provided. The network element comprises a processor configured such that the network element provides uplink and downlink grants in the first cell, wherein the first cell is a low-power cell within the coverage area of a second, high-power cell, and wherein the first cell acts as a secondary cell and the second cell acts as a primary cell in a carrier aggregation mode, and wherein at least one uplink control signal is received by one of only the first cell or both the first cell and the second cell. | 04-03-2014 |
20140092823 | Methods and Apparatus for Enabling Further Enhancements to Flexible Subframes in LTE Heterogeneous Networks - A method is provided for communication in a wireless telecommunication network. The method comprises providing, by a network element, one of an uplink grant or a downlink grant to at least one UE that the network element has determined, based on information received from a plurality of UEs, is closer to the network element than is another UE, wherein the uplink grant is scheduled such that the UE transmits to the network element only during at least one flexible subframe, and wherein the downlink grant is scheduled such that the network element transmits to the UE only during at least one flexible subframe. The method further comprises transmitting, by the network element, to at least one UE that the network element has determined, based on information received from a plurality of UEs, is closer to the network element than is another UE, only during at least one flexible subframe. | 04-03-2014 |
20140119467 | Codebook Subset Selection - The present disclosure provides for an improved application of signal strength weightings in an SDMA sectored cellular network. The improved signal strength weightings application is conducted through the improved selection of weightings from a new codebook subset or by the selection of weightings from a larger codebook subset. In a further embodiment, an antenna beam index or bit map can be used to select the best beam(s) in an SDMA sectored cellular network. In another embodiment, a field or factor in an uplink or downlink transmission packet can designate which directional transmission beam is best suited for the transmission or when the directional transmission beam should be activated. | 05-01-2014 |
20140134942 | Method and System for Mobile Relay Enablement - A method and relay node for managing a plurality of relay nodes that is moving relative to a source network node, the method comprising: selecting a lead node; connecting the plurality of relay nodes to the lead node; and transmitting a signal to manage mobility of the plurality of relay nodes from the lead node to a network node. | 05-15-2014 |
20140135006 | Method and System for Mobile Relay Enablement - A method and network node for managing a relay node that is moving relative to a source network node, the method ensuring a target network node is capable of supporting the relay node; sending a handover request of a relay node from the source network node to the target network node; and establishing an interface between the relay node and the target network node. | 05-15-2014 |
20140135007 | Method and System for Mobile Relay Enablement - A method and network element for managing a relay node that is moving relative to a source network node, the method sending a handover request from a source network node to a target network node to prepare the handover at the target network node; sending a handover command from the source network node to the relay node without waiting for an acknowledgement of the handover request from the target network node; and detaching the relay node from the source network node. | 05-15-2014 |
20140135008 | Method and System for Mobile Relay Enablement - A method and relay node for managing a relay node that is moving relative to a source network node, the method receiving parameters of a target network node from a source network node at the relay node; initiating a direct attachment of the relay node to the target network node; and detaching the relay node from the source network node. Also, a method and network node for managing a relay node that is moving relative to a source network node, the method sending a handover request of a relay node from the source network node to a target network node; performing handover of a plurality of user equipments (UEs) from the source network node to the target network node, wherein the plurality of UEs are attached to the relay node, and establishing an interface between the relay node and the target network node. | 05-15-2014 |
20140169238 | METHOD AND APPARATUS FOR HYBRID AUTOMATIC REPEAT REQUEST OPERATION IN A HETEROGENEOUS NETWORK ARCHITECTURE - Methods, systems and apparatus are provided for camping, assisted serving cell addition or removal, and discontinuous reception (DRX) in networks having a macro cell and at least one assisted serving cell. In other aspects, enhancements to Layer 1 channels and uplink timing alignments are provided in networks having a macro cell and at least one assisted serving cell. In further aspects, assisted serving cell Layer 2 architecture and transport channels are provided in networks having a macro cell and at least one assisted serving cell. In further aspects, collaborated HARQ solutions are provided in networks having a macro cell and at least one assisted serving cell. | 06-19-2014 |
20140169279 | HIDDEN NODE INTERFERENCE ISSUE IN A TYPE II RELAY NETWORK - Devices and methods are provided for managing hidden node interference. A communications session between a client node and an access node is affected by interference generated by a hidden relay node. The victim client node and the aggravator relay node are identified by the access node. The access node generates a set of scheduling instructions, which are then provided to the client node. The client node then uses the scheduling instructions to avoid further interference. | 06-19-2014 |
20140169284 | METHOD AND APPARATUS FOR CONTROL CHANNEL CONFIGURATION IN A HETEROGENEOUS NETWORK ARCHITECTURE - Methods, systems and apparatus are provided for camping, assisted serving cell addition or removal, and discontinuous reception (DRX) in networks having a macro cell and at least one assisted serving cell. In other aspects, enhancements to Layer 1 channels and uplink timing alignments are provided in networks having a macro cell and at least one assisted serving cell. In further aspects, assisted serving cell Layer 2 architecture and transport channels are provided in networks having a macro cell and at least one assisted serving cell. In further aspects, collaborated HARQ solutions are provided in networks having a macro cell and at least one assisted serving cell. | 06-19-2014 |
20140169309 | CONTROLLING ALLOCATION OF A PORTION OF A SHARED CHANNEL TO USE FOR CONTROL INFORMATION - To control allocation of a portion of a shared channel to use for control information, a base station determines an amount of resource elements of the shared channel to use for the control information in place of traffic data. The base station sends, to a mobile station, an indication relating to an offset parameter, where the indication is provided to allow the mobile station to compute a value for the offset parameter such that the mobile station can determine the amount of the resource elements of the shared channel to allocate for the control information. | 06-19-2014 |
20140171054 | METHOD AND APPARATUS FOR ASSISTED SERVING CELL CONFIGURATION IN A HETEROGENEOUS NETWORK ARCHITECTURE - Methods, systems and apparatus are provided for camping, assisted serving cell addition or removal, and discontinuous reception (DRX) in networks having a macro cell and at least one assisted serving cell. In other aspects, enhancements to Layer 1 channels and uplink timing alignments are provided in networks having a macro cell and at least one assisted serving cell. In further aspects, assisted serving cell Layer 2 architecture and transport channels are provided in networks having a macro cell and at least one assisted serving cell. In further aspects, collaborated HARQ solutions are provided in networks having a macro cell and at least one assisted serving cell. | 06-19-2014 |
20140171091 | METHOD AND APPARATUS FOR LAYER 3 CONFIGURATION IN A HETEROGENEOUS NETWORK - Methods, systems and apparatus are provided for camping, assisted serving cell addition or removal, and discontinuous reception (DRX) in networks having a macro cell and at least one assisted serving cell. In other aspects, enhancements to Layer 1 channels and uplink timing alignments are provided in networks having a macro cell and at least one assisted serving cell. In further aspects, assisted serving cell Layer 2 architecture and transport channels are provided in networks having a macro cell and at least one assisted serving cell. In further aspects, collaborated HARQ solutions are provided in networks having a macro cell and at least one assisted serving cell. | 06-19-2014 |
20140200001 | METHOD AND APPARATUS FOR MOBILITY ENHANCEMENT - Systems, apparatuses, and methods for a radio resource management (RRM) decision in wireless communication network are provided. In particular, post-processing metric is introduced in RRM decision making. Certain aspects of the disclosure involve, a method, performed at a user equipment (UE) of a wireless communications network. The method includes receiving a reference signal from a network node, processing the reference signal based on a receiver processing algorithm, identifying a post-processing metric based at least in part on the received reference signal, and triggering a mobility event based at least in part on the post-processing metric. | 07-17-2014 |
20140204771 | COMMUNICATING DATA USING A LOCAL WIRELESS ACCESS NETWORK NODE - A local wireless access network node receives a request to offload at least a portion of data traffic for a user equipment from a macro wireless access network node to the local wireless access network node, where the user equipment is to maintain a wireless connection to the macro wireless access network node after the offload. The local wireless access network node sends a response to indicate whether the local wireless access node has accepted or denied the request. | 07-24-2014 |
20140211756 | HANDOVER MECHANISM IN CELLULAR NETWORKS - Systems, apparatuses, and methods for a handover procedure in heterogeneous networks are provided. In particular, an intermediate handover (IHO) is introduced. Certain aspects of the disclosure involve, a method, performed at a first base station of a wireless communications network. An indication that a user equipment (UE) is receiving coverage signal from a second base station can be received. A data packet destined for the UE can be transmitted to the second base station. A communications link with the UE can be maintained after transmitting the data packet to the second base station. | 07-31-2014 |
20140211762 | HANDOVER MECHANISM IN CELLULAR NETWORKS - Systems, apparatuses, and methods for a handover procedure in heterogeneous networks are provided. In particular, an intermediate handover (IHO) is introduced. Certain aspects of the disclosure involve, a method, performed at a serving base station of a wireless communications network, where the serving base station serves a user equipment (UE). The method includes receiving a downlink (DL) signal quality indicator from the UE; and determining, from the signal quality indicator, whether a condition for an intermediate handover (IHO) state is satisfied. If the condition for the intermediate handover state is satisfied, the serving base station can initiate the intermediate handover state. | 07-31-2014 |
20140220979 | MOBILITY PARAMETER ADJUSTMENT AND MOBILITY STATE ESTIMATION IN HETEROGENEOUS NETWORKS - Systems and methods for mobility parameter adjustment and mobility state estimation in heterogeneous networks are provided. The mobility parameters may be adjusted based on the cell change types associated with the mobility procedure. The mobility procedure may be a cell handover procedure or a cell reselection procedure. The cell change type may be dependent on the transmission power level of the UE's serving cell and neighboring cells. In some implementations, the UE may provide a speed information to the serving cell such that the serving eNB may prioritize or optimize the mobility procedure for the UE. The UE may also estimate its mobility state by counting the number of cell changes within certain period of time and applying scaling factors to the number of cell changes based on the associated cell change types. | 08-07-2014 |
20140233407 | Interference Measurement Methods for Advanced Receiver in LTE/LTE-A - A method for receiving a PDCH is provided. The method comprises: receiving, by a UE, information identifying a plurality of resource elements that are transmitted with zero power in a resource block containing the PDCH; receiving, by the UE, a first DMRS on a first DMRS port transmitted from a first cell; and receiving, by the UE, the PDCH that is transmitted on the first DMRS port. | 08-21-2014 |
20140233408 | PROCEDURE FOR FORMULATING A SIGNAL TO INTERFERENCE PLUS NOISE RATIO - A method and system for formulating an SINR metric for cells using only the existing RSRP and RSRQ measurements. With this method and system side information is exchanged between eNBs of an E-UTRAN using the X2 interface where the X2 interface carries the X2 Application Protocol (X2AP). The side information is introduced either within X2AP messages exchanged between NB nodes or via modification of existing X2AP messages. Serving cell system information block (SIB) messages may also be modified or new SIB messages introduced to facilitate computation of an SNIR metric at a UE. | 08-21-2014 |
20140233466 | Methods of Interference Measurement for Advanced Receiver in LTE/LTE-A - A method for communication in a wireless communications network is provided. The method comprises: transmitting, by a network element in a first cell, a first DMRS on a first DMRS port; transmitting, by the network element, a first PDSCH on the first DMRS port; and transmitting, by the network, information indicating that the first DMRS port is used to transmit the first PDSCH, and information about a second DMRS port that is not used to transmit the first PDSCH but is used to transmit a second DMRS, wherein the first DMRS and the second DMRS are orthogonal to one another. | 08-21-2014 |
20140242960 | METHOD AND APPARATUS FOR SMALL CELL CONFIGURATION IN A HETEROGENEOUS NETWORK ARCHITECTURE - A method at a UE operating in a hybrid network, the method receiving a separate discontinuous reception configuration at the UE for the macro cell than for a small cell; and configuring a receiver on the UE according to the separate discontinuous reception configurations. Further, a method at a macro cell, the method determining a mobility state of a UE; finding a service at the UE; and limiting the UE to associate only with the macro cell based on at least one of the determining and the finding. Further, a method at a UE in an environment with a macro and small cell using the same frequency, including receiving a first allocation for small cell within a common small HARQ subframe set; and receiving a second allocation for a macro cell within a common macro HARQ subframe set, wherein the sets do not overlap. | 08-28-2014 |
20140242989 | METHOD AND APPARATUS FOR SMALL CELL CONFIGURATION IN A HETEROGENEOUS NETWORK ARCHITECTURE - A method at a UE operating in a hybrid network, the method receiving a separate discontinuous reception configuration at the UE for the macro cell than for a small cell; and configuring a receiver on the UE according to the separate discontinuous reception configurations. Further, a method at a macro cell, the method determining a mobility state of a UE; finding a service at the UE; and limiting the UE to associate only with the macro cell based on at least one of the determining and the finding. Further, a method at a UE in an environment with a macro and small cell using the same frequency, including receiving a first allocation for small cell within a common small HARQ subframe set; and receiving a second allocation for a macro cell within a common macro HARQ subframe set, wherein the sets do not overlap. | 08-28-2014 |
20140243002 | Methods of Inter-Cell Resource Sharing - A method for communication in a wireless telecommunication network is provided. The method comprises transmitting, by a first cell, to a first UE, a first signal on a resource block configured to be shared by more than one cell; and transmitting, by a second cell, to a second UE, a second signal on the same resource block, wherein a specification of a location of the resource block is included in configuration information available to the first cell and the second cell. | 08-28-2014 |
20140247810 | UE MEASUREMENT PROCEDURE IN A HETEROGENEOUS MOBILE NETWORK - A method and system for formulating an SINR metric for cells using only the existing RSRP and RSRQ measurements. With this method and system side information is exchanged between eNBs of an E-UTRAN using the X2 interface where the X2 interface carries the X2 Application Protocol (X2AP). The side information is introduced either within X2AP messages exchanged between eNB nodes or via modification of existing X2AP messages. Serving cell system information block (SIB) messages may also be modified or new SIB messages introduced to facilitate computation of an SNIR metric at a UE. | 09-04-2014 |
20140254476 | SENDING DATA RATE INFORMATION TO A WIRELESS ACCESS NETWORK NODE - A first wireless access network node sets a data rate for communication of data between a second wireless access network node and a user equipment (UE) that is concurrently connected to the first wireless access network node and the second wireless access network node. The first wireless access network node sends information relating to the data rate to the second wireless access network node for use by the second wireless access network node in controlling data communication between the second wireless access network node and the UE. | 09-11-2014 |
20140269368 | Radio Link Quality Monitoring - Disclosed herein is a method of radio link monitoring (RLM) in a UE comprising the steps of: selecting a control channel type to perform RLM on, wherein the control channel type includes one or more of: a physical downlink control channel (PDCCH); or an enhanced physical downlink control channel (EPDCCH); receiving a transmission on a carrier, the transmission comprising one or more reference signals; and determining the quality of the radio link using the selected control channel type and the one or more reference signals. | 09-18-2014 |
20140269581 | System and Method for Supporting Antenna Beamforing in a Cellular Network - The present invention is a method and system for supporting a beamforming antenna system in a mobile broadband communication network with an improved beam pattern, beam sweep pattern, pilot channel design with feedback and reporting rules, and control signaling design. Specifically, the improved beam pattern includes a method of supporting wireless communications in a wireless network forming at least two spatial beams within a cell segment where the at least two spatial beams are associated with different power levels, and separately, where at least two spatial beams can be moved across the cell segment according to a unique sweep pattern. The pilot channel design improves network bandwidth performance and improves user mobility tracking Feedback and reporting rules can be established using a particular field designator, CQI, in the preferred embodiment. | 09-18-2014 |
20140301360 | METHODS AND SYSTEMS FOR WIRELESS COMMUNICATION IN HETEROGENEOUS NETWORKS - Systems, methods, and apparatuses for data and/or control offloading and handover in heterogeneous wireless communication networks are provided. Data and/or control packets can be offloaded to a coordinating base station while a user equipment (UE) remains associated with its serving cell. The packets are still transferred between the serving base station and the core network, and the offloaded data and/or control packets are forwarded from the serving base station to the coordinating base station for transmission to the UE. Furthermore, during a handover process, the serving base station and coordinating base station may independently schedule and send a handover command to the UE to reduce the radio link failure rate. | 10-09-2014 |
20140307591 | SELECTING AN UPLINK-DOWNLINK CONFIGURATION FOR A CLUSTER OF CELLS - Information associated with a communication condition of at least one cell in a cluster of cells is received, where the communication condition is at least one selected from among a traffic pattern and interference. In response to the received information, a coordinating network node selects an uplink-downlink configuration for use by the cells in the cluster. | 10-16-2014 |
20140328182 | CONTROLLING DATA OFFLOAD IN RESPONSE TO FEEDBACK INFORMATION - A first wireless access network node receives feedback information from a second wireless access network node that performs data offload for the first wireless access node. The feedback information relates to one or more of a radio resource usage, a buffer condition, a hardware resource usage or a link quality. In response to the feedback information, the first wireless access network node performs control of the data offload. | 11-06-2014 |
20140334439 | METHOD AND APPARATUS FOR CELL COORDINATION IN HETEROGENEOUS CELLULAR NETWORKS - There is provided a method and apparatus for coordinating cells in a heterogeneous network. A serving cell determines scheduling parameters for scheduling a UE intermittently between a serving cell and at least one coordinating cell. The scheduling parameters define a cycle for the UE in which the UE alternates between listening to the serving cell and each of the coordinating cells. Timing offsets between the serving cell and the coordinating cells is determined by a UE and reported back to the eNB of the serving cell. | 11-13-2014 |
20140355554 | Processing Information Blocks for Wireless Transmission - In general, according to an embodiment, a wireless transmitter includes a plurality of coding and modulation modules to apply corresponding coding and modulation algorithms to input information blocks. A discrete Fourier transform (DFT) precoder applies DFT processing to outputs of the coding and modulation modules, and an inverse fast Fourier transform (IFFT) module receives a DFT output of the DFT precoder, which is mapped to different subcarriers according to the resource allocation indicated by the base station, and applies IFFT processing to the DFT output. An output processing stage produces output signals based on the output of the IFFT module to transmit wirelessly to a wireless receiver. In a different implementation, the outputs of the coding and modulation modules can be provided to an IFFT module to produce IFFT-processed output information. | 12-04-2014 |
20140362750 | SYSTEM AND METHOD FOR ENERGY SAVING IN A WIRELESS SYSTEM - A system and method for entering and exiting energy savings power mode in a wireless network is provided. According to an aspect, a request message for requesting entry of a node into energy serving is generated at an anchor node. The request message is sent and the node that receives it enters an energy saving mode. The request can be implemented as an X2-application protocol message and can include indicators for timing of entry into energy saving mode, resources to be reserved and the state of energy saving mode to be entered into. The nodes can take the form of anchor nodes and non-anchor nodes as well as macro nodes and small nodes. Modified versions of X2-application protocol messages eNB configuration update, cell activation request and cell activation response can also be used to assist a node in entering and exiting energy savings power mode. | 12-11-2014 |
20150043390 | DYNAMIC CELL CLUSTERING - In some implementations, a method for dynamic cell clustering includes splitting, by an initial central coordinator, the cluster into two or more clusters in response to a message from a small cell in a cluster. The initial cluster includes a plurality of cells, including the small cell, with each cell assigned a same Time Division Duplex (TDD) configuration. | 02-12-2015 |
20150045038 | Communicating Radio Resource Configuration Information - A first wireless access network node receives common radio resource configuration information of a second wireless access network node. A data offload request is sent to the second wireless access network node to perform a data offload for a user equipment (UE) attached to the first wireless access network node. | 02-12-2015 |
20150050940 | COORDINATING ALLOCATION OF RESOURCES FOR USE BY SMALL CELLS - A controller receives information relating to at least one of multiple small cells. Responsive to the received information, the controller coordinates allocation of resources for use by the small cells in communicating data with respective user equipments (UEs), where the coordinating of the allocation of resources reduces interference among the small cells. | 02-19-2015 |
20150071183 | DETERMINING HYBRID ARQ INDICATORS - A system and method may provide user equipment (UE)-implemented inter-cell interference mitigation. In some implementations, a method in a user equipment for Hybrid Automatic Repeat Request (HARQ) indicator determination includes separating received Physical HARQ Indicator Channel (PHICH) modulation symbols into two data streams: (1) PHICH modulation symbols including interference from Cell-specific Reference Symbol (CRS) transmissions, and (2) PHICH modulation symbols including substantially no interference from the CRS transmissions. The UE separately evaluates the PHICH modulation symbols including interference and the PHICH modulation symbols including substantially no interference. The UE determines a Hybrid ARQ indicator based upon a combination of the separate evaluations of the PHICH modulation symbols including interference and the PHICH modulation symbols including substantially no interference. | 03-12-2015 |
20150085677 | SYSTEMS AND METHODS FOR BAND-LIMITED SUBFRAMES IN WIRELESS NETWORKS - Systems, methods, and apparatuses for using band-limited subframes in wireless communication networks are provided. During the band-limited subframes, the macro cell base station may mute its transmission or transmit at a low power over some frequency sub-band, while transmitting at a normal or higher power over other frequency sub-band. Correspondingly, the small cell base station may communicate with UEs within its coverage at the frequency sub-band that the macro cell base station transmits at a low power. The band-limited subframe enables the small cell base station to communicate with the UE with reduced interference, and in the meantime, increases the throughput of macro cell base station as it does not require the macro cell base station to completely mute its transmission during the band-limited subframe. | 03-26-2015 |
20150092878 | Codebook Subset Selection - The present invention provides for an improved application of signal strength weightings in a SDMA sectorized cellular network. The improved signal strength weightings application is conducted through the improved selection of weightings from a new codebook subset or by the selection of weightings from a larger codebook subset. In a further embodiment, an antenna beam index or bit map can be used to select the best beam(s) in a SDMA sectorized cellular network. In another embodiment, a field or factor in an uplink or downlink transmission packet can designate which directional transmission beam is best suited for the transmission or when the directional transmission beam should be activated. | 04-02-2015 |
20150105084 | METHOD AND APPARATUS FOR HANDOVER IN HETEROGENEOUS CELLULAR NETWORKS - A method at a user equipment for handover from a serving cell to a target cell, the method sending a measurement report to the serving cell; and transmitting a reconfiguration complete message to the target cell; wherein the measurement report includes downlink timing measurements for the target cell. Further, a method at a source network element for handover of a user equipment from the source network element to a target network element, the method receiving a measurement report from the user equipment; sending a handover request to the target network element; receiving a handover request acknowledgement from the target network element, the handover request acknowledgement including a reconfiguration message and at least one downlink subframe in which an uplink grant is expected at the target network element for the user equipment; and forwarding the reconfiguration message and at least one downlink subframe to the user equipment. | 04-16-2015 |
20150245343 | TDD and FDD Joint Carrier Aggregation Enhancements in LTE-Advanced - In some implementations, a method in a user equipment (UE) for supporting time division duplex (TDD) and frequency division duplex (FDD) joint carrier aggregation (CA) includes receiving a Physical Uplink Control Channel (PUCCH) resource allocation from an evolved NodeB (eNB). The PUCCH resource allocation includes a first PUCCH configuration for a first subframe and a second PUCCH configuration for a second subframe, and the second PUCCH configuration is different than the first PUCCH configuration. The UE transmits a first group of Hybrid Automatic Repeat reQuest (HARQ) bits based on the first PUCCH configuration in the first subframe. The UE transmits a second group of HARQ bits based on the second PUCCH configuration in the second subframe. | 08-27-2015 |
20150281912 | ENHANCING GROUP COMMUNICATION SERVICES - In some implementations, a method in a user equipment (UE) for supporting group communication service includes receiving, from a base station, a group communication on a Physical Downlink Shared Channel (PDSCH). The UE determines a first Hybrid Automatic Repeat reQuest (HARQ) information that corresponds to the group communication on the PDSCH. The UE transmits the first HARQ information. In some implementations, the UE determines a group Channel State Information (CSI) for a group communication that is transmitted by a base station on a PDSCH. The UE determines a unicast CSI for a unicast communication that is transmitted by the base station on the PDSCH. The UE transmits the group CSI. The UE transmits the unicast CSI. | 10-01-2015 |
20150319774 | IDENTIFYING A SUBFRAME CONTAINING INFORMATION RELATING TO AN UPLINK GRANT - A user equipment (UE) receives a message identifying a subframe containing information relating to an uplink grant to be sent by a target cell. | 11-05-2015 |
20150341835 | Methods and Systems for Wireless Communication in Heterogeneous Networks - Systems, methods, and apparatuses for data and/or control offloading and handover in heterogeneous wireless communication networks are provided. Data and/or control packets can be offloaded to a coordinating base station while a user equipment (UE) remains associated with its serving cell. The packets are still transferred between the serving base station and the core network, and the offloaded data and/or control packets are forwarded from the serving base station to the coordinating base station for transmission to the UE. Furthermore, during a handover process, the serving base station and coordinating base station may independently schedule and send a handover command to the UE to reduce the radio link failure rate. | 11-26-2015 |
20150365869 | Communicating Radio Resource Configuration Information - A first wireless access network node receives common radio resource configuration information of a second wireless access network node. A data offload request is sent to the second wireless access network node to perform a data offload for a user equipment (UE) attached to the first wireless access network node. | 12-17-2015 |