Patent application number | Description | Published |
20130188558 | APPARATUS AND METHOD FOR PILOT SCRAMBLING FOR ENHANCED PHYSICAL DOWNLINK CONTROL CHANNELS - A telecommunications system is configured to perform a method for mapping synchronization signals. The method includes transmitting data, reference signals, synchronization signals and control elements to at least one of the plurality of subscriber stations. The method also includes configuring enhanced physical downlink control channel (e-PDCCH) DMRS parameters for each of a plurality of e-PDCCH sets | 07-25-2013 |
20130250879 | METHOD AND APPARATUS FOR TRANSMISSION MODE DESIGN FOR EXTENSION CARRIER OF LTE ADVANCED - A system and method includes transmission mode design for Extension Carrier of LTE-Advanced. The system includes a base station capable of communicating with subscriber stations using an extension carrier. The extension carrier is not backwards compatible and does not transmit any LTE Release 8-10 cell-specific reference signals (CRS) or Physical Downlink Control Channel. The system including transmission mode design for Extension Carrier of LTE-Advanced uses a basic demodulation reference signal transmission scheme (Basic DM-RS TS) when the PDSCH transmission uses DCI format 1A. Basic DM-RS TS uses DM-RS ports and does not uses CRS ports. | 09-26-2013 |
20130265899 | DETERMINATION OF CHANNEL QUALITY INFORMATION IN ADVANCED ANTENNA SYSTEMS - A user equipment (UE) is configured to determine channel quality information (CQI) in a wireless communication system. The UE includes a processor configured to receive from an eNodeB (eNB) signaling parameters related to a first co-channel precoding matrix indicator (PMI) codebook, determine a second co-channel PMI based on a determined single user PMI (SU-PMI) and the received signaling parameters related to the first co-channel PMI codebook, determine a multi-user CQI (MU-CQI) based on the second co-channel PMI, and transmit the MU-CQI to the eNB. | 10-10-2013 |
20130265951 | HIGH-ORDER MULTIPLE-USER MULTIPLE-INPUT MULTIPLE-OUTPUT OPERATION FOR WIRELESS COMMUNICATION SYSTEMS - Methods and apparatuses schedule resources and identify resource scheduling in a MU MIMO wireless communication system. A method for identifying resource scheduling for a UE includes receiving downlink control information; identifying, from the downlink control information, one or more DM-RS ports assigned to the UE and a PDSCH EPRE to DM-RS EPRE ratio; and identifying data intended for the UE in a resource block in a downlink subframe using the one or more DM-RS ports and the PDSCH EPRE to DM-RS EPRE ratio. A method for scheduling resources includes identifying one or more DM-RS ports to assign to a UE and a PDSCH EPRE to DM-RS EPRE ratio for identifying data intended for the UE in a resource block in a downlink subframe; and including an indication of the one or more DM-RS ports and the PDSCH EPRE to DM-RS EPRE ratio in downlink control information. | 10-10-2013 |
20130279437 | QUASI CO-LOCATION IDENTIFICATION OF REFERENCE SYMBOL PORTS FOR COORDINATED MULTI-POINT COMMUNICATION SYSTEMS - Methods and apparatuses indicate and identify quasi co-located reference signal ports. A method of identifying by a UE includes identifying, from downlink control information, a CSI-RS port that is quasi co-located with a DM-RS port assigned to the UE. The method includes identifying large scale properties for the assigned DM-RS port based on large scale properties for the CSI-RS port. The method includes performing channel estimation and/or time/frequency synchronization using the identified large scale properties for the DM-RS port. Another method for identifying by a UE includes identifying, from downlink control information, a CRS port that is quasi co-located with a CSI-RS port configured for the UE. The method includes identifying large scale properties for the configured CSI-RS port based on large scale properties for the CRS port. The method includes performing channel estimation and/or time/frequency synchronization using the identified large scale properties for the CSI-RS port. | 10-24-2013 |
20130301448 | CSI DEFINITIONS AND FEEDBACK MODES FOR COORDINATED MULTI-POINT TRANSMISSION - A method and apparatus report channel state information (CSI) feedback of a user equipment (UE) in a coordinated multipoint communication system. The method includes identifying, when downlink transmissions to the UE are configured with at least two CSI subframe subsets, an interference measurement resource within one of the CSI subframe subsets belonging to a CSI reference resource. The method also includes using the identified interference measurement resource to derive an interference measurement. The apparatus includes a controller configured to, when downlink transmissions to the UE are configured with at least two CSI subframe subsets, identify an interference measurement resource within one of the CSI subframe subsets belonging to a CSI reference resource. The controller is configured to use the identified interference measurement resource to derive an interference measurement. | 11-14-2013 |
20130308715 | APPARATUS AND METHOD FOR CHANNEL STATE INFORMATION CODEWORD CONSTRUCTION FOR A CELLULAR WIRELESS COMMUNICATION SYSTEM - A mobile station configured to receive transmissions from a two-dimensional array of antennas at a base station is provided. A main processor of the mobile station is configured to estimate first and second channel states and determine a co-phasing scalar component for each of multiple groups of antennas in the array based on the first channel state. The main processor is configured to generate a matrix X that includes a plurality of column vectors selected from a codebook based on the second channel state, generate a matrix P | 11-21-2013 |
20130336214 | APERIODIC AND PERIODIC CSI FEEDBACK MODES FOR COORDINATED MULTI-POINT TRANSMISSION - Coordinate multi-point (CoMP) transmission is facilitated by resolving collisions between feedback reporting. Based upon the conditions within the network, collision resolution may be by dropping a channel report during a subframe, multiplexing channel reports from a plurality of user equipment, compressing channel reports a plurality of user equipment, and combined reporting, either through joint reports or by using carrier aggregation, for conditions between a user equipment and a plurality of transmission points. New signaling and reporting formats facilitate selection of a collision resolution suitable for current network conditions. | 12-19-2013 |
20140086174 | METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING CHANNEL STATE INFORMATION - A method for CSI report transmission includes detecting a collision in a subframe, between a first PUCCH CSI report of one serving cell with which a UE is configured in one of transmission modes 1 to 9, and a second PUCCH CSI report of another serving cell with which the UE is configured in transmission mode 10. Upon the reporting types of the collided PUCCH CSI reports having a same priority, the method transmits the first PUCCH CSI report if the CSI process index of the second PUCCH CSI report has a positive value other than 1. A method for CSI report transmission includes configuring, via a higher layer, a UE configured in transmission mode 10 whether to create a respective CSI report(s) for each aperiodic CSI process or not, using an information element including at least three one-bit variables. | 03-27-2014 |
20140112194 | SYSTEM AND METHOD FOR AD-HOC/NETWORK ASSISTED DEVICE DISCOVERY PROTOCOL FOR DEVICE TO DEVICE COMMUNICATIONS - A system and method for device to device (D2D) network-assisted device discovery are provided. The method includes initiating the D2D network-assisted device discovery of a receiving UE to enable a target UE and the receiving UE to establish a D2D communication. The method also includes performing a discovery feasibility measurement to determine whether a D2D communication between the target UE and the receiving UE is feasible. The method further includes transmitting a discovery setup message and receiving a discovery report from the target UE. | 04-24-2014 |
20140119266 | TRANSMISSION SCHEME AND QUASI CO-LOCATION ASSUMPTION OF ANTENNA PORTS FOR PDSCH OF TRANSMISSION MODE 10 FOR LTE ADVANCED - Methods and apparatuses determine and indicate QCL behavior for or to a UE. A method for determining QCL behavior for the UE method includes, when configured in TM10 for a serving cell, determining whether a CRC for a PDSCH transmission scheduled by DCI format 1A is scrambled using a C-RNTI. The method also includes, in response to determining C-RNTI scrambling, determining whether a transmission scheme of the PDSCH transmission uses a non-MBSFN subframe configuration and whether the PDSCH transmission is transmitted on antenna port 0 or a TxD scheme is used. The method further includes, in response to determining the non-MBSFN subframe configuration and antenna port 0 or the TxD scheme being used, determining to use QCL behavior 1 for PDSCH reception. Additionally, the method includes, in response to determining a MBSFN subframe configuration and antenna port 7 being used, determining to use QCL behavior 2 for PDSCH reception. | 05-01-2014 |
20140126402 | CONFIGURATION OF INTERFERENCE MEASUREMENT RESOURCES FOR ENHANCED DOWNLINK MEASUREMENTS AND MU-MIMO - Apparatuses and methods for indicating and performing interference measurements. A method for performing interference measurements includes identifying a CSI-IM configuration for the UE to perform interference measurement. The method includes determining whether the CSI-IM configuration includes a subset of a total number of frequency resources configured for CSI-IM in the wireless communication system. The method includes measuring interference based on the identified CSI-IM configuration. Additionally, the method includes sending feedback based on the measured interference. The method for performing interference measurements may also include determining whether to perform interference measurements based on all downlink subframes or only a portion of the downlink subframes. Additionally, the method may include performing interference measurement based on the subframe determination. | 05-08-2014 |
20140126496 | Configuration of Rate Matching and Interference Measurement Resources for Coordinated Multi-point Transmission - A method and an apparatus indicate and identify a ZP-CSI-RS configuration. The method for identifying includes identifying a DCI format and the ZP-CSI-RS configuration in response to receiving one or more control messages where a first set of ZP-CSI-RS configuration or configurations are configured to be used for DCI Format 1A and a second set of ZP-CSI-RS configuration or configurations are configured to be used for DCI Format 2D or 2C. The method also includes identifying a PDSCH rate matching based on the identified ZP-CSI-RS configuration. The method for indicating includes transmitting a dynamic signaling control message comprising an indication of a DCI format. The method also includes transmitting transmit a higher layer signaling control message comprising an indication of the ZP-CSI-RS configuration or configurations. | 05-08-2014 |
20140133395 | METHODS AND APPARATUS FOR IDENTIFICATION OF SMALL CELLS - Orthogonal multi-user, multiple input, multiple output (MU-MIMO) multiplexing capacity for demodulation reference signals (DMRSs) is increased without increasing the overhead in resource elements per physical resource block by using length-4 orthogonal cover codes (OCC-4). A base station switches between legacy DMRS antenna port mappings and OCC-4 mapping based upon either a transmission mode or a channel station information process configuration field value. | 05-15-2014 |
20140161060 | TRANSMISSIONS/RECEPTIONS OF UPLINK ACKNOWLEDGEMENT SIGNALS IN WIRELESS NETWORKS - An apparatus for use in a wireless communication network includes a UE configured to communicate with a plurality of serving cells with at least a first serving cell and a second serving cell. The UE is configured to operate in at least two carrier frequencies. The UE includes processing circuitry. The processing circuitry is configured to detect one or more scheduling assignments for receiving one or more respective PDSCHs from a respective one or more of the plurality of serving cells. The processing circuitry is also configured to receive the one or more PDSCHs from the respective one or more of the plurality of serving cells based on the one or more scheduling assignments. The processing circuitry is further configured to transmit HARQ-ACK information on a PUCCH in response to receiving the one or more PDSCHs. The processing circuitry is configured to utilize first and second power control loops. | 06-12-2014 |
20140177555 | INTER-ENB COORDINATION METHODS TO SUPPORT INTER-ENB CARRIER AGGREGATION FOR LTE-ADVANCED - Various inter-eNodeB (eNB) coordination methods and systems are disclosed. For example, in one approach, a user equipment (UE) configured to communicate with a plurality of eNodeBs (eNBs). Each of the plurality of eNBs are configured to receive and transmit coordination information from other eNBs identifying how uplink control information (UCI) data of the UE should be transmitted. The UE includes processing circuitry. When the UE is configured with more than one serving cell for inter-eNodeB (eNB) Carrier Aggregation (CA), the processing circuitry is not configured for simultaneous physical uplink shared channel (PUSCH) and physical uplink control channel (PUCCH) transmissions. | 06-26-2014 |
20140192734 | METHODS TO SUPPORT INTER-ENODEB COMP - A method of executing inter-eNB CoMP JT between a CoMP UE and multiple CoMP eNBs is disclosed. A first CoMP eNB constructs a first set of dynamic control information (DCI). The first set of DCI is independently constructed by the first CoMP eNB. The first CoMP eNB transmits the first set of DCI to the CoMP UE. The first set of DCI includes independent DL assignments allowing the first CoMP eNB to perform independent scheduling of a PDSCH associated with the first CoMP eNB. A second CoMP eNB constructs a second set of DCI. The second set of DCI is independently constructed by the second CoMP eNB. Furthermore, the second CoMP eNB transmits the second set of DCI to the CoMP UE. The second set of DCI includes independent DL assignments allowing the second CoMP eNB to perform independent scheduling of a PDSCH associated with the second CoMP eNB. | 07-10-2014 |
20140192738 | UPLINK CONTROL INFORMATION TRANSMISSIONS/RECEPTIONS IN WIRELESS NETWORKS - A method and apparatus provide a user equipment (UE) configured to communicate with a plurality of carrier aggregation (CA) groups with at least a first CA group (CG1) and a second CA group (CG2). The UE includes processing circuitry. The processing circuitry is configured to determine whether the UE is power-limited. The UE is scheduled to transmit acknowledged information in a physical uplink shared channel (PUSCH) to a cell of the CG1 and uplink control information (UCI), other than the acknowledgement information, in a physical uplink control channel (PUCCH) to a cell of the CG2. The processing circuitry is also configured to, responsive to the UE being power-limited, prioritize the PUSCH for power allocation. The processing circuitry is also configured to transmit the PUSCH to the cell of the CG1. | 07-10-2014 |
20140192775 | METHODS AND APPARATUS FOR INTER-ENB CARRIER AGGREGATION - A method and apparatus for connecting to a secondary enhanced NodeB. A transceiver configured to receive a Radio Resource Control (RRC) message from a Master enhanced NodeB (MeNB). The RRC message comprises a dedicated random access resources configuration for the UE to perform random access to a cell associated with a Secondary enhanced NodeB (SeNB) for a purpose of an addition of the SeNB, and an identification of the cell to which the random access is to be performed. Responsive to receiving the RRC message, command the Media Access Control (MAC) to trigger the random access for the addition of the SeNB to the cell with the identification indicated in the RRC message with the random access resources indicated in the RRC message. The MeNB is an eNB which the UE connects to initially and which acts as mobility anchor. | 07-10-2014 |
20140192917 | Channel State Information Feedback Design in Advanced Wireless Communication Systems - Methods and apparatuses for providing feedback by a UE. A method includes receiving a first set of CSI-RS and a second set of CSI-RS, calculating a CQI using a received power of the first set of CSI-RS and a channel matrix estimated based on the second set of CSI-RS, and sending feedback based on the calculated CQI. A method includes measuring signals received on a plurality of CSI-RS ports; calculating CQI values for each of applications of precoding matrixes to each of the selected combinations of CSI-RS ports; selecting a SPN, a SPI, a PMI, and a RI that yields a highest CQI from among the calculated CQI values; and sending feedback indicating the SPI, the highest CQI value, the PMI, and at least one of the SPN or the RI. | 07-10-2014 |
20140241150 | METHODS AND APPARATUS FOR DEMODULATION REFERENCE SIGNALS AND SYNCHRONIZATION SIGNALS IN EXTENSION CARRIER OF LTE ADVANCED - A telecommunications system is configured to perform a method for mapping synchronization signals. The method includes transmitting data, reference signals, synchronization signals and control elements to at least one of the plurality of subscriber stations. The method also includes configuring DMRS parameters to avoid a collision between the DMRS and at least one of the synchronization signals in a middle 6 resource blocks (RBs) of a system bandwidth. | 08-28-2014 |
20140242963 | NETWORK-ASSISTED MULTI-CELL DEVICE DISCOVERY PROTOCOL FOR DEVICE-TO-DEVICE COMMUNICATIONS - A method includes determining, at a first eNodeB (eNB) associated with a first cell of a network, that a first user equipment (UE) is to engage in a device discovery process. The method also includes coordinating parameters of the device discovery process with a second eNB. The second eNB is associated with a second cell of the network and with a second UE. The parameters define one or more resources to be used in the first and second cells during the device discovery process. The method further includes communicating at least some of the parameters to the first UE. The device discovery process includes a process in which the first UE identifies one or more other UEs with which the first UE is able to engage in device-to-device communications. | 08-28-2014 |
20140293893 | AGGREGATION OF FDD AND TDD CELLS - Methods and apparatus of a base station or a User Equipment (UE) in communication with each other are provided. The UE is configured by the base station for simultaneous communication with at least a cell using Frequency Division Duplexing (FDD) and at least a cell using Time Division Duplexing (TDD). Processes enabling transmission of control information associated with scheduling data reception or data transmission from the UE are provided. | 10-02-2014 |
20140328329 | METHODS AND APPARATUS FOR DEVICE-TO-DEVICE COMMUNICATIONS SYSTEM - A method includes configuring one or multiple pools of Device-to-Device (D2D) communication resources by an eNodeB (eNB). The method also includes signaling of the configured pool(s) of D2D communication resources by the eNB to a first User Equipment (UE) and a plurality of UEs using a common broadcast channel; and sending a request for one or multiple D2D communication resources to an eNB by the first UE configured to transmit D2D messages. The method also includes determining one or multiple resources for D2D communication by an eNB for the first UE. The method also includes communicating D2D resource allocation information to the first UE. The method also includes communicating D2D resource allocation information by the first UE to multiple UEs; and transmitting D2D data by the first UE to multiple UEs. Methods for configuring and signaling D2D communication resources by relay or out-of-coverage UEs are also provided. | 11-06-2014 |
20140369242 | METHODS OF UL TDM FOR INTER-ENODEB CARRIER AGGREGATION - One or more embodiments provide a method implemented in a user equipment (UE) used in a wireless communications system. The method includes transmitting an indication to a base station that the UE is capable of transmitting on a single uplink carrier frequency and downlink carrier aggregation. The method also includes receiving an uplink carrier frequency switching pattern from the base station. The method also includes switching uplink carrier frequencies based on the uplink carrier frequency switching pattern. | 12-18-2014 |
20150016312 | METHOD AND APPARATUS FOR COVERAGE ENHANCEMENT FOR A RANDOM ACCESS PROCESS - Methods and apparatus are provided for a User Equipment (UE) and a base station in communication with each other to determine parameters for a Random Access (RA) process. The base station informs the UE through a System Information Block (SIB) of a number of resource sets for RA preamble transmission by the UE. Each resource set is associated with a number of repetitions for a RA preamble transmission, with a maximum number of RA preamble transmissions, and with a number of repetitions the base station transmits a response to a RA preamble reception. The SIB also informs an association between a range of path-loss values and a number of RA preamble repetitions. The UE determines a number of repetitions for a first RA preamble transmission from its path-loss measurement. | 01-15-2015 |
20150085795 | SYSTEM AND METHOD FOR RESOURCE MAPPING FOR COVERAGE ENHANCEMENTS OF BROADCAST CHANNELS - Methods and apparatus are provided for a base station to transmit repetitions of broadcast information and for a UE to detect the broadcast information. In a first method, the base station maps each repetition in a respective quadruple of subframe symbols while accounting for a possible different number of available sub-carriers among quadruplets of subframe symbols. In a second method, the base station maps the repetitions successively in available sub-carriers. For intermittent transmissions of repetitions, the UE can use the mapping structure of the repeated broadcast information to determine an existence of a transmission. | 03-26-2015 |