Patent application number | Description | Published |
20100104034 | 8-Transmit antenna reference signal design for downlink communications in a wireless system - Systems and methods are disclosed for mapping reference signals for antenna ports in a plurality of resource blocks among resource blocks in a subframe within an orthogonal frequency division multiplexing (OFDM) communication system. This method includes selecting at least one predetermined resource elements for transmitting in the plurality of resource blocks using a first number of antenna ports. This method also includes selecting a second number of antenna ports and mapping a plurality of reference signals relating to the second number of antenna ports using a second number of OFDM symbols. | 04-29-2010 |
20100135242 | METHOD AND SYSTEM FOR REFERENCE SIGNAL PATTERN DESIGN - A base station comprising an allocator configured to allocate a plurality of dedicated reference (DR) signals to selected resource elements. In the even-numbered time slot in a first resource block, a first group of DR signals are: i) allocated to a first group of adjacent resource elements; and ii) allocated to a second group of adjacent resource elements. In the contiguous odd-numbered time slot in the first resource block, the first group of DR signals are allocated to a third group of adjacent resource elements. In the even-numbered time slot in a second resource block, the first group of adjacent DR signals are allocated to a fourth group of resource elements. In the contiguous odd-numbered time slot in the second resource block, the first group of DR signals are: i) allocated to a fifth group of adjacent resource elements; and ii) allocated to a sixth group of adjacent resource elements. | 06-03-2010 |
20100172308 | SYSTEM AND METHOD FOR DOWNLINK PHYSICAL INDICATOR CHANNEL MAPPING WITH ASYMMETRIC CARRIER AGGREGATION - A base station that communicates with a plurality of subscriber stations in a wireless communications network is configured to allocate downlink physical channel resources in asymmetric carrier systems. The base station includes a transmitter configured to allocate a set of Physical Hybrid Automatic Repeat Request Indicator Channel (PHICH) resources in a downlink carrier. The transmitter can inform, via an uplink grant, a subscriber station regarding one or more PHICH resources from the allocated set of PHICH resources. The base station also includes a receiver that can receive a data communication from the subscriber station within PRBs in a number of uplink carriers that correspond to PRB indices included in the uplink grant. The transmitter can transmit an Acknowledgement/Negative Acknowledgement on the allocated PHICH resources in the downlink carrier such that a PHICH resource is defined by the PRB index and at least one offset value. | 07-08-2010 |
20100195599 | SYSTEM AND METHOD FOR MULTI-USER AND MULTI-CELL MIMO TRANSMISSIONS - A base station can communicate with a plurality of subscriber stations in a Multi-User (MU) Multiple-Input Multiple-Output (MIMO) system. The base station includes a transmitter and plurality of antenna configured to transmit control information. The base station can transmit a resource block to a first subscriber station. The resource block includes at least two downlink reference signal (DRS) patterns. The base station can assign a first DRS pattern for use by the first subscriber station. The base station informs the subscriber station regarding the assignment by reserving a state in a downlink grant. In response, the subscriber station can utilize the first DRS pattern as a pilot resource element and, optionally, avoid other DRS patterns. | 08-05-2010 |
20100195624 | SYSTEM AND METHOD FOR UPLINK DATA AND CONTROL SIGNAL TRANSMISSION IN MIMO WIRELESS SYSTEMS - A mobile station includes a transmission chain capable of communicating via an uplink transmission to at least one base station in a Multiple Input Multiple Output wireless network. The mobile station includes a plurality of transmit antenna and a transmitter coupled to the plurality of transmit antenna. The transmitter includes a layer mapper that maps data and uplink control information to at least one layer. The mapping is performed prior to Discrete Fourier Transform precoding such that the data and uplink control information are multiplexed and interleaved. The transmitter is configured to simultaneously transmit the data and uplink control information on at least one of a plurality of transmission layers. | 08-05-2010 |
20100195748 | METHOD AND SYSTEM FOR REFERENCE SIGNAL PATTERN DESIGN IN RESOURCE BLOCKS - A base station is provided. The base station comprises a downlink transmit path comprising circuitry configured to transmit a plurality of reference signals in two or more resource blocks. Each resource block comprises S OFDM symbols. Each of the S OFDM symbols comprises N subcarriers, and each subcarrier of each OFDM symbol comprises a resource element. The base station further comprises a reference signal allocator configured to allocate the plurality of reference signals to selected resource elements of the two or more resource blocks according to a reference signal pattern. A same pre-coding matrix is applied across the two or more resource blocks. | 08-05-2010 |
20100238877 | METHOD AND SYSTEM FOR MAPPING PILOT SIGNALS IN MULTI-STREAM TRANSMISSIONS - A base station is provided. The base station comprises a downlink transmit path comprising circuitry configured to transmit a plurality of reference signals in two or more subframes. Each subframe comprises one or more resource blocks. Each resource block comprises S OFDM symbols. Each of the S OFDM symbols comprises N subcarriers, and each subcarrier of each OFDM symbol comprises a resource element. The base station further comprises a reference signal allocator configured to allocate a first group of the plurality of reference signals to selected resource elements of a first subframe according to a reference signal pattern. The first group of the plurality of reference signals is for a first group of antenna ports. The reference signal allocator also configured to allocate a second group of the plurality of reference signals to selected resource elements of a second subframe according to the same reference signal pattern. The second group of the plurality of reference signals is for a second group of antenna ports different from the first group of antenna ports. | 09-23-2010 |
20100246376 | CELL-SPECIFIC SHIFTING OF REFERENCE SIGNALS IN MULTI-STREAM TRANSMISSIONS - A base station is provided. The base station comprises a downlink transmit path comprising circuitry configured to transmit a plurality of reference signals in one or more subframes. Each subframe comprises one or more resource blocks. Each resource block comprises S Orthogonal Frequency Division Multiplexing (OFDM) symbols. Each of the S OFDM symbols comprises N subcarriers, and each subcarrier of each OFDM symbol comprises a resource element. The base station further comprises a reference signal allocator configured to allocate the plurality of reference signals to selected resource elements of a resource block, and circularly shift the plurality of reference signals in a time domain of the resource block by an h | 09-30-2010 |
20100272040 | METHOD AND SYSTEM FOR MULTI-LAYER BEAMFORMING - A base station includes a reference signal sequence generator configured to generate a reference signal sequence for each of n antenna ports using one initialization seed, n being a positive integer. The base station also includes n spreaders. Each spreader corresponds to a respective one of the n antenna ports and is configured to receive a respective reference signal sequence for the respective antenna port from the reference signal sequence generator and spread the respective reference signal sequence using a respective Walsh code. The base station further includes n resource element mappers. Each mapper corresponds to a respective one of the n antenna ports and is configured to receive a respective spread reference signal sequence from a respective spreader and map the respective spread reference signal sequence to a set of reference signal resource elements corresponding to a respective antenna port. | 10-28-2010 |
20100275083 | CONTROL DESIGN FOR BACKHAUL RELAY TO SUPPORT MULTIPLE HARQ PROCESSES - A wireless communication network includes a base station and a relay station. The relay station is configured to relay communications between the base station and at least one subscriber station. The base station is configured to communicate with the subscriber station via the relay station. The base station further is configured to transmit, in a subframe, a plurality of transport blocks for a plurality of Hybrid Automatic Repeat Request (HARQ) processes to the relay station. Each transport block corresponds to a different HARQ process. | 10-28-2010 |
20100323709 | METHOD AND SYSTEM FOR INDICATING METHOD USED TO SCRAMBLE DEDICATED REFERENCE SIGNALS - A base station includes a transmit path circuitry to scramble CRC bits of a DCI format using a C-RNTI for dynamic scheduling, and scramble the CRC bits of the DCI format using an SPS C-RNTI for semi-persistent scheduling. If C-RNTI is used, the circuitry generates a downlink transmission grant using the DCI format being a fallback format to indicate a transmit diversity transmission scheme or a single-layer beamforming scheme, and uses the DCI format being a dual-layer beamforming format to indicate a dual-DRS port transmission scheme or a single-DRS port transmission scheme. | 12-23-2010 |
20110045860 | METHOD AND SYSTEM FOR ASSIGNING PHYSICAL UPLINK CONTROL CHANNEL (PUCCH) RESOURCES - A base station includes a transmit path circuitry to transmit a downlink (DL) grant in a single control channel element (CCE) to a subscriber station in a subframe n-k while the subscriber station performs an orthogonal transmit diversity scheme using N transmit antennas (N-Tx ORT) with N being a positive integer greater than 1. The transmit path circuitry is further configured to transmit data streams to the subscriber station. The base station also includes a receive path circuitry to receive an acknowledgement signal from the subscriber station in response to the data streams. The acknowledgement signal is carried in at least two physical uplink control channel (POOCH) resources in a subframe n. A first resource of the PUCCH resources corresponds to the control channel element used to transmit the downlink grant, and a second resource of the PUCCH resources is assigned by a mapping function. | 02-24-2011 |
20110080965 | METHOD AND SYSTEM FOR FEEDBACK OF CHANNEL INFORMATION - A base station is provided. The base station includes a transmit path circuitry configured to transmit downlink control information in a downlink control information (DCI) format to a subscriber station, and a receive path circuitry configured to receive multiple-input multiple-output (MIMO) feedback from the subscriber station in response to the downlink control information. The MIMO feedback from the subscriber station is determined by two or more codepoints in the DCI format. One of the two or more codepoints indicates a rank-limited single user multiple-input multiple-output (SU-MIMO) feedback corresponding to a rank up to a maximum rank. | 04-07-2011 |
20110085503 | METHOD AND SYSTEM OF MULTI-LAYER BEAMFORMING - A base station includes a reference signal sequence generator configured to generate a reference signal sequence for a reference signal for each of n antenna ports using one initialization seed with n being a positive integer. The initialization seed is defined as: | 04-14-2011 |
20110085506 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING MULTI-USER CONTROL CHANNELS IN A WIRELESS COMMUNICATION SYSTEM WITH MULTIPLE ANTENNAS - Provided are a method and apparatus for transmitting and receiving multi-user control channels through a data channel region in a wireless communication system using multiple antennas. Further provided is a definition of a new search space for control channel candidates. In the transmitting method, a base station forms control channels for a plurality of user equipment each of which is composed of at least one resource block, performs a mapping for the control channels by dividing a space of the same transmission region in a data channel region of a sub-frame, and then multiplexes the control channels with data channels in the data channel region of the sub-frame and to transmit the multiplexed control channels. | 04-14-2011 |
20110103324 | METHODS AND APPARATUS FOR MULTI-USER MIMO TRANSMISSIONS IN WIRELESS COMMUNICATION SYSTEMS - A wireless communication system includes a base station capable of communicating with a plurality of subscriber stations. The base station can transmit control information and data to a subscriber stations. The base station also can identify a set of RS patterns to be used to communicate with the subscriber station, assign a subset of antenna port numbers within the set of RS patterns to the subscriber stations. The base station can indicate the assigned states in a Downlink Control Information (DCI) format transmitted in a Physical Downlink Control Channel (PDCCH). The base station transmits the data using a subset of antenna ports corresponding to the subset of antenna port numbers. The base station also can map reference signals corresponding to the subset of antenna ports according to at least one RS pattern within the set of RS patterns. | 05-05-2011 |
20110110219 | METHOD AND SYSTEM FOR BALANCING REFERENCE SIGNAL POWERS ACROSS OFDM SYMBOLS - A base station includes a reference signal allocator that allocates a first layer of dedicated reference signals and a second layer of reference signals to the same resource elements in a first resource block. The reference signals are allocated to two adjacent resource elements corresponding to a first OFDM symbol and a second OFDM symbol on a first, second, and third subcarriers of the first resource block. The base station also includes a reference signal multiplexer that multiplexes the first layer with the second layer. A first cover code W | 05-12-2011 |
20110141987 | SYSTEMS AND METHODS FOR TRANSMITTING CHANNEL QUALITY INFORMATION IN WIRELESS COMMUNICATION SYSTEMS - A base station for use in a wireless network capable of communicating with a plurality of mobile stations. The base station transmits to a first mobile station downlink subframes of OFDM symbols. Each downlink subframe comprises a plurality of resource blocks and is associated with a subframe (SF) type that is determined according to whether or not a PDSCH region of a resource block in a downlink subframe includes at least one of: 1) a cell-specific reference signal (CRS) resource element and 2) a channel-state-information reference signal (CSI-RS) resource element. The base station receives from the first mobile station at least one of COI, PMI, modulation scheme, and transport block size and interprets the received at least one of COI, PMI, modulation scheme, and transport block size according to a default SF type used by the first mobile station to determine the at least one of COI, PMI, modulation scheme, and transport block size. | 06-16-2011 |
20110235599 | METHOD AND SYSTEM FOR UPLINK ACKNOWLEDGEMENT SIGNALING IN CARRIER-AGGREGATED WIRELESS COMMUNICATION SYSTEMS - A base station includes a transmit path circuitry to transmit DL grant, data streams, and a control signal to configure a number of uplink transmit antenna ports PUCCH to a subscriber station. The base station also includes a receive path circuitry to receive ACK/NACK modulation in response to the data streams. If the subscriber station is configured to transmit ACK/NACK using one uplink transmit antenna port and channel selection with PUCCH format | 09-29-2011 |
20110243059 | APPARATUS AND METHOD FOR INTERLEAVING DATA IN A RELAY PHYSICAL DOWNLINK CONTROL CHANNEL (R-PDCCH) - A wireless network comprising a first base station operable to communicate with mobile stations and a plurality of relay stations for providing bi-directional communication between the first base station and a plurality of mobile stations. The first base station transmits a relay physical downlink control channel (R-PDCCH) in the downlink to the plurality of relay stations. The R-PDCCH comprises: i) a first search space comprising downlink (DL) grants associated with the plurality of relay stations; and ii) a second search space comprising uplink (UL) grants associated with the plurality of relay stations. | 10-06-2011 |
20110255505 | SYSTEMS AND METHODS FOR BUNDLING RESOURCE BLOCKS IN A WIRELESS COMMUNICATION SYSTEM - A base station for use in a wireless network operable to communicate with a plurality of mobile stations. The base station transmits a downlink frame to a first mobile station. The downlink frame comprises time-frequency resource elements allocated in a plurality of physical resource blocks. The base station transmits the plurality of physical resource blocks in bundles having a bundle size that is a function of the system bandwidth configuration and the base station uses the same precoder for all physical resource blocks in the same bundle. The bundle size is from one physical resource block to three physical resource blocks. | 10-20-2011 |
20110255619 | METHOD AND SYSTEM FOR MAPPING UPLINK CONTROL INFORMATION - A base station is provided. The base station includes a transmit path circuitry to transmit an uplink grant to a subscriber station, the uplink grant indicating a first modulation and coding scheme (MCS) value for a first codeword transmission and a second MCS value for a second codeword transmission. The base station also includes a receive path circuitry to receive a multiple-input multiple-output (MIMO) uplink subframe from the subscriber station, the MIMO uplink subframe having a first subset of layers used for the first codeword transmission and a second subset of layers used for the second codeword transmission. Acknowledgement/negative acknowledgement (ACK/NACK) information and rank indication (RI) information are mapped onto both the first subset of layers and the second subset of layers. Channel quality information (CQI) is only mapped onto either the first subset of layers or the second subset of layers. | 10-20-2011 |
20110274043 | METHOD AND SYSTEM FOR INDICATING THE TRANSMISSION MODE FOR UPLINK CONTROL INFORMATION - A base station includes a transmit path circuitry to select one of a first UCI multiplexing method that allows a subscriber station to simultaneously transmit PUSCH and PUCCH and a second UCI multiplexing method that does not allow the subscriber station to simultaneously transmit PUSCH and PUCCH. The transmit path circuitry also transmits a higher layer signal indicating the one selected UCI multiplexing method, and transmits one or more uplink grants. Each of the uplink grants schedules a PUSCH in an UL CC for a subframe n, and each of the uplink grants carries a CQI request. The base station also includes a receive path circuitry to receive an aperiodic CSI report on the PUSCH in the uplink component carrier i when only one of the uplink grants scheduling a PUSCH in an uplink component carrier i carries a CQI request having a value from a set of values. | 11-10-2011 |
20110280222 | UPLINK TRANSMISSION APPARATUS AND METHOD FOR MOBILE COMMUNICATION SYSTEM SUPPORTING UPLINK MIMO - A base station includes a transmit path circuitry to transmit an uplink grant to a subscriber station. The uplink grant indicating a first MCS value for a first codeword transmission and a second MCS value for a second codeword transmission. The base station also includes a receive path circuitry configured to receive a MIMO uplink subframe from the subscriber station, the MIMO uplink subframe having a first subset of layers used for the first codeword transmission and a second subset of layers used for the second codeword transmission. ACK/NACK information and RI information are repeated on both the first and second subsets of layers, and CQI is spatially multiplexed on either the first subset or the second subset of layers. If the first MCS value is different from the second MCS value, the CQI is spatially multiplexed onto the subset of layers having a higher MCS value. | 11-17-2011 |
20110299484 | METHOD AND SYSTEM FOR TRANSMITTING CHANNEL STATE INFORMATION IN WIRELESS COMMUNICATION SYSTEMS - A base station includes a transmit path circuitry to transmit an uplink grant in a DCI format to a subscriber station. The base station also includes a receive path circuitry to receive only UCI on a PUSCH from a subscriber station when the uplink grant includes a MCS of an enabled transport block (TB) with a value of 29, or a redundancy version of the PUSCH with a value of 1; a CSI request field with a non-zero value; and a total number of physical resource blocks allocated for the subscriber station, N | 12-08-2011 |
20110310823 | METHOD AND SYSTEM FOR MAPPING HARQ-ACK BITS - A subscriber station is provided. The subscriber station includes a transmit path circuitry to transmit uplink control information (UCI) in a subframe comprising one or more resource blocks, each resource block comprising S SC-FDM symbols. Each of the S symbols comprises N virtual subcarriers, and each subcarrier of each symbol comprises a resource element. The subscriber station also includes a UCI symbol allocator to allocate a first vector sequence of HARQ-ACK bits to a control region of each of four symbols of a resource block, the control region allocated for HARQ-ACK bits. The UCI symbol allocator also allocates a second vector sequence of HARQ-ACK bits to a control region of a fifth symbol of the resource block when a condition is met. The control region of the fifth symbol can be allocated for rank information (RI) bits. | 12-22-2011 |
20120014320 | METHOD AND SYSTEM FOR MULTIPLEXING ACKNOWLEDGEMENT SIGNALS AND SOUNDING REFERENCE SIGNALS - A base station includes a transmit path circuitry that determines a PUCCH format 3 index and transmits an uplink grant to a subscriber station, the uplink grant including an indication of the PUCCH format 3 index. The base station also includes a receive path circuitry that receives a PUCCH format 3 signal in a subframe from the subscriber station. The receive path circuitry also receives a first demodulation reference signal for the PUCCH format signal in the first slot of the subframe, where the first demodulation reference signal is determined based at least partly upon a first demodulation reference signal cyclic shift number. The receive path circuitry also receives a second demodulation reference signal for the PUCCH format 3 signal in the second slot of the subframe, where the second demodulation reference signal is determined based at least partly upon a second demodulation reference signal cyclic shift number. | 01-19-2012 |
20120020288 | SYSTEMS AND METHODS FOR PUCCH FEEDBACK IN 3GPP WIRELESS NETWORKS - A mobile station for use in a wireless network. The mobile station transmits feedback values in a physical uplink control channel (PUCCH) to a base station of the wireless network. The mobile station is operable to transmit to the base station a subband second precoder matrix index (PMI) associated with a particular subband and a subband channel quality indicator (CQI) value associated with the particular subband together in a subframe of the PUCCH. | 01-26-2012 |
20120026972 | APPARATUS AND METHOD FOR SUPPORTING RANGE EXPANSION IN A WIRELESS NETWORK - A wireless network for communicating with a mobile station capable of operating in a range expansion mode. The wireless network comprises a macro-base station (BS) operable to communicate with the mobile station and a micro-base station (BS) in a coverage area associated with the macro-BS. The macro-BS transmits to the micro-BS a first control message indicating a range expansion (RE) capability of the mobile station. In response, the micro-BS transmits to the macro-BS PCFICH information associated with the micro-BS. The macro-BS transmits the PCFICH information to the mobile station and the mobile station uses the PCFICH information to perform a handover procedure to the micro-BS. | 02-02-2012 |
20120039273 | APPARATUS AND METHOD FOR TRANSMISSION OF UPLINK SOUNDING REFERENCE SIGNALS IN A WIRELESS NETWORK - A mobile station for use in a wireless network that operates according to the Long-Term Evolution Advanced (LTE-A) standard. The mobile station is operable to transmit an aperiodic sounding reference signal (SRS) to a base station in response to a triggering grant received from the base station. The bandwidth on which the mobile station transmits the aperiodic SRS depends on a type of the triggering grant. The type of the triggering grant is one of a downlink grant, an uplink multiple-input, multiple-output (MIMO) grant, and an uplink single-input, multiple-output (SIMO) grant. | 02-16-2012 |
20120083280 | METHODS AND APPARATUS FOR ENABLING INTERFERENCE COORDINATION IN HETEROGENEOUS NETWORKS - For use in a heterogeneous network, a method for enabling interference coordination includes, upon occurrence of a trigger condition, determining, at a first low power node, that the first low power node is approaching a second low power node. The method also includes sending, at the first low power node, an entering message to an evolved Node-B (eNB) that serves the first low power node. The method further includes receiving, at the first low power node, configuration information from the eNB to perform at least one measurement of the second low power node. | 04-05-2012 |
20120120888 | APPARATUS AND METHOD FOR PRIMARY UPLINK SHARED CHANNEL HOPPING IN A WIRELESS NETWORK - A wireless communication system includes a base station capable of communicating with a plurality of subscriber stations includes a controller configured to perform a frequency hop within a selected subset of a physical uplink shared channel (PUSCH). The PUSCH includes a plurality of available resource blocks and a plurality of restricted resource blocks. The base station includes a transmit path comprising circuitry configured to transmit control information and data to at least one of the plurality of subscriber stations in a sub-frame. The transmit path is also configured to transmit a plurality of resource blocks in the sub-frame. Further, the transmit path maps a plurality virtual resource blocks (VRB) to a plurality of available physical resource blocks (PRB) within a limited bandwidth of the sub-frame. The sub-frame includes the limited bandwidth and a plurality of restricted resource blocks. | 05-17-2012 |
20120201207 | APPARATUS AND METHOD FOR PERIODIC CHANNEL STATE REPORTING IN A WIRELESS NETWORK - Channel State Information (CSI) is reported by a subscriber station to a base station. The CSI is reported periodically for at least two physical uplink control channels (PUCCH). In case of a collision between a report for a first PUCCH and a report for the second PUCCH, each of the report types is partitioned into one of a number of classes, which include: a first class for rank indicator related report types and wideband (WB) W1 report types; a second class for WB report types or WB channel quality indicator report types; and a third class for subband related report types or W1 report types. A priority rule assigns a priority to each of the classes. The CSI feedback reports are transmitted according to the priority rule such that the report type included in a higher class is transmitted and the report type included in the lower class are dropped. | 08-09-2012 |
20120269140 | DOWNLINK CONTROL SIGNALING FOR COORDINATED MULTIPOINT TRANSMISSION - A base station performs a method for coordinated multipoint (CoMP) transmission to a plurality of user equipments (UEs). The method includes transmitting a first and a second physical downlink control channel (PDCCH) to a user equipment (UE) in a subframe, wherein the first PDCCH has a first downlink control information (DCI) format and the second PDCCH has a second DCI format. The method also includes transmitting a first transport block of at least one CoMP transmission to the UE in the subframe according to the first PDCCH, the at least one CoMP transmission comprising the first transport block from the base station and a second transport block from a second base station, wherein the second transport block is scheduled according to the second PDCCH. | 10-25-2012 |
20120300714 | METHODS AND APPARATUS FOR RANDOM ACCESS PROCEDURES WITH CARRIER AGGREGATION FOR LTE-ADVANCED SYSTEMS - An eNodeB is configured to perform a method for a random access procedure in an LTE-Advanced system. The method includes receiving from a user equipment a random access preamble message on a physical random access channel (PRACH) on a first cell, the PRACH associated with a random access radio network temporary identifier (RA-RNTI). The method also includes transmitting to the user equipment a random access response (RAR) message on a second cell. At least one of the RAR message and the RA-RNTI includes information configured to allow the user equipment to identify a target Timing Advance Group (TAG) or cell associated with the RAR message. | 11-29-2012 |
20120320847 | SYSTEM AND METHOD FOR AN UPLINK CONTROL SIGNAL IN WIRELESS COMMUNICATION SYSTEMS - A user equipment is capable of receiving communications from a cell including at least one base station. The user equipment includes a receiver configured to receive from the base station both a cell specific radio resource control (RRC) configuration comprising a cell specific resource offset parameter for a PUCCH HARQ-ACK, and a UE specific RRC configuration comprising a UE specific RS base sequence parameter and an UE specific resource offset parameter for the PUCCH HARQ-ACK. | 12-20-2012 |
20120327891 | METHOD AND SYSTEM FOR INDICATING METHOD USED TO SCRAMBLE DEDICATED REFERENCE SIGNALS - A base station includes a transmit path circuitry to scramble CRC bits of a DCI format using a C-RNTI for dynamic scheduling, and scramble the CRC bits of the DCI format using an SPS C-RNTI for semi-persistent scheduling. If C-RNTI is used, the circuitry generates a downlink transmission grant using the DCI format being a fallback format to indicate a transmit diversity transmission scheme or a single-layer beamforming scheme, and uses the DCI format being a dual-layer beamforming format to indicate a dual-DRS port transmission scheme or a single-DRS port transmission scheme. If SPS C-RNTI is used, the circuitry generates a downlink transmission grant using the DCI format being the fallback format to indicate a single-DRS port transmission scheme, and uses the DCI format being the dual-layer beamforming format to indicate a dual-DRS port transmission scheme or a single-DRS port transmission scheme. | 12-27-2012 |
20130034064 | APPARATUS AND METHOD FOR UE-SPECIFIC DEMODULATION REFERENCE SIGNAL SCRAMBLING - A user equipment (UE) is configured to communicate with a plurality of base stations in a wireless network. The UE includes a processor that receive a downlink grant scheduling a physical downlink shared channel (PDSCH) for the UE, the downlink grant being transmitted in a physical downlink control channel (PDCCH) or an enhanced physical downlink control channel (ePDCCH). The processor also receives UE-specific demodulation reference signals (UE-RS) provided for demodulation of the PDSCH, wherein the UE-RS are scrambled according to a scrambling sequence initialized with an initialization value c | 02-07-2013 |
20130077513 | CoMP MEASUREMENT SYSTEM AND METHOD - According to one embodiment, a subscriber station configured to communicate with one or more base stations in a wireless communication network. The subscriber station is configured to receive, from the network, information associated with one or more of the TPs that are candidates for coordinated multipoint (CoMP) transmission with the subscriber station, measure a plurality of channel quality values for each of the one or more TPs, and report to the network, the measured channel quality values. | 03-28-2013 |
20130077569 | APPARATUS AND METHOD FOR UPLINK TRANSMISSION IN WIRELESS COMMUNICATION SYSTEMS - An apparatus and method for a User Equipment in a wireless network including at least one Base Station (BS) are provided. The method includes receiving an Information Element (IE) for configuring at least one of a PUSCH power control method and a PUSCH DMRS generation method from the BS, determining a state of the IE, and transmitting a PUSCH and a DMRS for the PUSCH according to the state of the IE. A transmission power of the PUSCH is controlled and a base sequence for the PUSCH DMRS is generated according to the state of the IE. When the state of the IE indicates a first state, the transmission power of the PUSCH is determined according to a first power control equation. When the state of the IE indicates a second state, the transmission power of the PUSCH is determined according to a second power control equation. | 03-28-2013 |
20130083682 | DOWNLINK TIMING REFERENCE FOR COORDINATED MULTIPOINT COMMUNICATION - A method, apparatus and a system are disclosed. A method of operating a user equipment includes receiving one or more signals from one or more transmission points for a coordinated multi-point (CoMP) transmission. The method also includes identifying a timing reference for receiving the coordinated multi-point (CoMP) transmission as a time when a signal is first received from one of the transmission points. | 04-04-2013 |
20130114535 | REFERENCE SIGNAL FOR TIME AND/OR FREQUENCY TRACKING IN A WIRELESS NETWORK - A method and an apparatus in a base station are capable of including a tracking reference signal (TRS) in a downlink subframe. The method includes generating a TRS subframe by including the TRS in the downlink subframe at a frequency density of at least one resource element per six resource elements in the TRS subframe. Additionally, the method includes transmitting the TRS subframe at a periodicity among other subframes not including the TRS. | 05-09-2013 |
20130136098 | APPARATUS AND METHOD FOR MACHINE-TYPE COMMUNICATIONS - A network and user equipment are configured to support machine type communications is provided. The UE includes processing circuitry to process a physical broadcast channel (PBCH) to acquire at least one system information block (SIB). The processing circuitry also processes the at least one SIB to determine a location of a lite SIB (SIB-L). The processing circuitry determines a location of a lite physical downlink control channel (L-PBCCH) from the SIB-L. | 05-30-2013 |
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 |
20130201926 | SYSTEM AND METHOD FOR PHYSICAL DOWNLINK CONTROL AND HYBRID-ARQ INDICATOR CHANNELS IN LTE-A SYSTEMS - A subscriber station configured to receive one or more physical resource blocks (PRBs) from a base station, the PRBs comprising an enhanced physical data control channel (ePDCCH) and at least one of an enhanced physical downlink control format indicator channel (ePCFICH), an enhanced physical hybrid-ARQ indicator channel (ePHICH). A number of resource element groups (REGs) for the at least one of the ePCFICH or the ePHICH are mapped onto a first set of REs in each of one or more PRBs according to a mapping pattern. Also, a number of REGs for the ePDCCH are mapped onto a second set of REs in each of the one or more PRBs, wherein the first set of REs and the second set of REs do not have a common RE. | 08-08-2013 |
20130229953 | APPARATUS AND METHOD FOR INDICATING SYNCHRONIZATION SIGNALS IN A WIRELESS NETWORK - A base station in a heterogeneous network is configured to communicate with a plurality of base stations via a backhaul link and configured to communicate with a plurality of subscriber stations. The base station includes a transmit path configured to transmit data, reference signals, synchronization signals and control elements to at least one of the plurality of subscriber stations. The base station also includes processing circuitry configured to map primary synchronization signals (PSS) and secondary synchronization signals (SSS) onto each of a carrier of a first carrier type and a carrier of a second carrier type. The PSS and SSS on the second carrier type are mapped onto different time locations than in the first carrier type. In addition, the PSS/SSS are mapped onto consecutive resource elements (REs) on each of the carrier of the first type and the carrier of the second type. | 09-05-2013 |
20130230004 | METHOD AND SYSTEM FOR INDICATING THE TRANSMISSION MODE FOR UPLINK CONTROL INFORMATION - A base station includes a transmit path circuitry to select one of a first UCI multiplexing method that allows a subscriber station to simultaneously transmit PUSCH and PUCCH and a second UCI multiplexing method that does not allow the subscriber station to simultaneously transmit PUSCH and PUCCH. The transmit path circuitry also transmits a higher layer signal indicating the one selected UCI multiplexing method, and transmits one or more uplink grants. Each of the uplink grants schedules a PUSCH in an UL CC for a subframe n, and each of the uplink grants carries a CQI request. The base station also includes a receive path circuitry to receive an aperiodic CSI report on the PUSCH in the uplink component carrier i when only one of the uplink grants scheduling a PUSCH in an uplink component carrier i carries a CQI request having a value from a set of values. | 09-05-2013 |
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 |
20130258964 | APPARATUS AND METHOD FOR CHANNEL-STATE-INFORMATION PILOT DESIGN FOR AN ADVANCED WIRELESS NETWORK - A base station and mobile station communicate using a multiple input multiple output (MIMO) communication. The base station includes a two dimensional (2D) antenna array comprising a number N of antenna elements configured in a 2D grid. The 2D antenna array is configured to communicate with at least one subscriber station. The base station also includes a controller configured to transmit N channel-state-information reference-signal (CSI-RS) antenna ports (APs) associated with each of the N antenna elements. The subscriber station includes an antenna array configured to communicate with at least one base station. The subscriber station also includes processing circuitry configured receives physical downlink shared channels (PDSCHs) from a 2D active antenna array at the at least one base station. The 2D active antenna array includes a number N antenna elements. The processing circuitry further configured to estimate a full CSI associated with the N antenna elements. | 10-03-2013 |
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 |
20130301554 | METHOD AND SYSTEM OF MULTI-LAYER BEAMFORMING - A base station includes a reference signal sequence generator configured to generate a reference signal sequence for a reference signal for each of n antenna ports using one initialization seed c | 11-14-2013 |
20130308572 | TRANSMISSION MODE AND FEEDBACK DESIGNS TO SUPPORT MTC TYPE DEVICES IN LTE - A base station is configured to support communications with at least one user equipment (UE) configured for machine type communications (MTC). The base station includes processing circuitry configured to determine a transmission scheme based on a category of the at least one UE. The base station also includes a transmitter configured to transmit, using a determined transmission scheme, a physical downlink shared channel (PDSCH) in a reduced bandwidth to the at least one UE. The UE includes a receiver configured to receive a physical downlink shared channel (PDSCH) in a reduced bandwidth from at least one base station. The UE also includes processing circuitry configured to determine a transmission scheme utilized by at least one base station. | 11-21-2013 |
20130308596 | METHOD AND APPARATUS FOR TRANSMISSION OF PHYSICAL CHANNEL IN DwPTS - For use in a wireless network, a method for scheduling a Downlink Pilot Time Slot (DwPTS) subframe is provided. The method comprises expanding Physical Resource Blocks (PRBs) in a subframe prior to a DwPTS subframe to include resource elements (REs) of the DwPTS subframe, a number of OFDM symbols of the DwPTS subframe being less than or equal to a threshold OFDM symbol number. The method further comprises facilitating for a UE to demodulate REs in a DwPTS subframe based on DeModulation Reference Signals (DMRS) transmitted in a downlink subframe prior to the DwPTS subframe. | 11-21-2013 |
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 |
20130343299 | METHOD FOR CQI FEEDBACK WITHOUT SPATIAL FEEDBACK (PMI/RI) FOR TDD COORDINATED MULTI-POINT AND CARRIER AGGREGATION SCENARIOS - Methods and apparatus of a base station (BS) communicating with a user equipment (UE) are provided. The BS transmits N channel state information reference signal (CSI-RS) on N CSI-RS antenna ports, which is received by the UE. A transmission mode is configured that supports coordinated multi-point (COMP) transmissions. A channel quality information (CQI) feedback configuration requires CQI feedback without a precoding matrix index (PMI) and without a rank indicator (RI). The BS receives a CQI transmitted by the UE, which is in accordance with the CQI feedback configuration. If N is one, the CQI is calculated on a single antenna port, antenna port 7, and the single antenna port is mapped from the N equals one CSI-RS antenna port. | 12-26-2013 |
20140003375 | UPLINK HYBRID ACKNOWLEDGEMENT SIGNALING IN WIRELESS COMMUNICATIONS SYSTEMS | 01-02-2014 |
20140016549 | METHODS AND APPARATUS FOR CODEBOOK SUBSET RESTRICTION FOR TWO-DIMENSIONAL ADVANCED ANTENNA SYSTEMS - A user equipment (UE) in a wireless network having two-dimensional antenna systems performs a method of codebook sampling. The method includes receiving from an eNodeB (eNB) an indication of a restricted subset M of vertical precoding matrices, wherein M is less than a total number of vertical precoding matrices N in a codebook, the codebook comprising a plurality of vertical precoding matrices and horizontal precoding matrices. The method also includes feeding back vertical precoding matrix indicators (V-PMI) to the eNB based on the restricted subset of vertical precoding matrices. | 01-16-2014 |
20140050280 | MULTI-USER AND SINGLE USER MIMO FOR COMMUNICATION SYSTEMS USING HYBRID BEAM FORMING - A station in a wireless communication system includes a processor circuitry configured to form at least a first plurality of data streams and a second plurality of data streams, and a digital precoder configured to receive the first plurality of data streams and the second plurality of data streams. The wireless station can further include a plurality of radio frequency (RF) beamforming chains connected to the digital precoder and configured to form at least one RF envelope, wherein the digital precoder is configured to steer a plurality of digital beams within the at least one RF beam envelope, the digital beams forming a plurality of spatially distinct paths for the first plurality of data streams and a plurality of spatially distinct paths for the second plurality of data streams, and a plurality of antennas operably connected to the RF beamforming chains. | 02-20-2014 |
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 |
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 |