Pseudorandom sequence generation for OFDM cellular systems

In one embodiment, a transmitter includes a binary sequence generator unit configured to provide a sequence of reference signal bits, wherein the sequence is an inseparable function of a cell identification parameter, a cyclic prefix mode corresponding to the transmitter and one or more time indices of the sequence. The transmitter also include a mapping unit that transforms the sequence of reference signal bits into a complex reference signal, and a transmit unit configured to transmit the complex reference signal. In another embodiment, a receiver includes a receive unit configured to receive a complex reference signal and a reference signal decoder unit configured to detect a sequence of reference signal bits from the complex reference signal, wherein the sequence is an inseparable function of a cell identification parameter, a cyclic prefix mode corresponding to a transmitter and one or more time indices of the sequence.

Broadcast multicast mode

A broadcast/multicast transmission format includes a data portion and a cyclic prefix (CP) coupled to the traffic data portion. A method and system for providing broadcast/multicast transmissions with the application to communication systems that perform broadcast or multicast transmission is also disclosed. The addition of a pilot to the data portion of the transmissions is also disclosed.

Broadcast Multicast Mode

A broadcast/multicast transmission format includes a data portion and a cyclic prefix (CP) coupled to the traffic data portion. A method and system for providing broadcast/multicast transmissions with the application to communication systems that perform broadcast or multicast transmission is also disclosed. The addition of a pilot to the data portion of the transmissions is also disclosed.

COMPUTER GENERATED SEQUENCES FOR DOWNLINK AND UPLINK SIGNALS IN WIRELESS COMMUNICATION SYSTEMS

The present disclosure provides a base station transmitter, a user equipment transmitter and methods of operating the base station and user equipment transmitters. In one embodiment, the base station transmitter is for use with a cellular communication system and includes a synchronization unit configured to provide a randomly-generated constant amplitude zero autocorrelation (random-CAZAC) sequence corresponding to a downlink synchronization signal. Additionally, the base station transmitter also includes a transmit unit configured to transmit the downlink synchronization signal using the random-CAZAC sequence. In another embodiment, the user equipment transmitter is for use with a cellular communication system and includes a reference signal unit configured to provide a random-CAZAC sequence for an uplink reference signal corresponding to a one resource block allocation of the user equipment. The user equipment transmitter also includes a transmit unit configured to transmit the uplink reference signal using the random-CAZAC sequence. 130-. (canceled)31. A user equipment transmitter for use with a cellular communication system , comprising:a reference signal unit configured to provide a QPSK sequence for an uplink reference signal corresponding to a one or two resource block allocation of the user equipment;a Zadoff-Chu sequence unit configured to generate a Zadoff-Chu sequence for the uplink reference signal corresponding to a resource block allocation of three or more for the user equipment; anda transmit unit configured to transmit the uplink reference signal.32. The user equipment transmitter as recited in wherein the QPSK sequence is selected from a group of QPSK sequences that is stored in the user equipment.33. The user equipment transmitter as recited in wherein a group of the QPSK sequences provides a mean cross-correlation that is no greater than a corresponding group of cyclic extended or truncated Zadoff-Chu sequences.34. The user equipment transmitter ...

Codebook sub-sampling for CSI feedback on PUCCH for 4Tx MIMO

Channel state information (CSI) feedback in a wireless communication system (100) is disclosed. User equipment (107) transmits a CSI feedback signal via a Physical Uplink Control CHannel (PUCCH) (108). If the UE is configured in a first feedback mode, the CSI comprises a first report jointly coding a Rank Indicator (RI) and a first precoding matrix indicator (PMI1) (203), and a second report coding Channel Quality Indicator (CQI) and a second precoding matrix indicator (PMI2)(204). If the UE is configured in a second feedback mode, the CSI comprises a first report coding RI (205), and a second report coding CQI, PMI1 and PMI2 (206). The jointly coded RI and PMI1 employs codebook sub-sampling, and the jointly coding PMI1, PMI2 and CQI employs codebook sub-sampling.

High data rate uplink transmission

A user equipment device has a control information decoder configured to receive and decode an uplink scheduling grant. A transmit module is configured to receive a rank indicator (RI) extracted by the decoder and adapt a transmission rank in response to the RI. At least two transmit antennas are configured to transmit according to the RI.

MIMO PGRC system and method

A method of transmitting a wireless signal (FIGS. 3A-3C) is disclosed. A data stream is divided (306) into a first data stream and a second data stream. The first data stream is encoded (300) at a first data rate. The second data stream is encoded (320) at a second data rate different from the first data rate. A first part of the encoded first data stream is transmitted from a first transmit antenna (308). A second part of the encoded first data stream is transmitted from a second transmit antenna (312).

Data and Control Multiplexing in PUSCH in Wireless Networks

Transmission of information in a wireless network is performed by allocating a channel from a transmitter to a receiver. The channel has at least one time slot with each time slot having a plurality of symbols. Each slot contains at least one reference symbol (RS). As information becomes available for transmission, it is classified as prioritized information (PI) and other information. One or more priority symbols are generated using the digital samples of the priority information. Other symbols are generated using the other data. Priority symbols are transmitted on the channel in a manner that separation of priority symbol(s) and a reference symbol does not exceed a time duration of one symbol. For example, Rank Indicator (RI) is transmitted using symbol k, ACKNAK is transmitted using symbol k+1; and the reference signal (RS) is transmitted using symbol k+2, wherein symbols k, k+1, and k+2 are consecutive in time. The other symbols are transmitted in available locations.

Codebook sub-sampling for CSI feedback on PUCCH for 4Tx MIMO

Channel state information (CSI) feedback in a wireless communication system is disclosed. User equipment transmits a CSI feedback signal via a Physical Uplink Control CHannel (PUCCH). If the UE is configured in a first feedback mode, the CSI comprises a first report jointly coding a Rank Indicator (RI) and a first precoding matrix indicator (PMI1), and a second report coding Channel Quality Indicator (CQI) and a second precoding matrix indicator (PMI2). If the UE is configured in a second feedback mode, the CSI comprises a first report coding RI, and a second report coding CQI, PMI1 and PMI2. The jointly coded RI and PMI1 employs codebook sub-sampling, and the jointly coding PMI1, PMI2 and CQI employs codebook sub-sampling.

Multiple CQI feedback for cellular networks

Single user and multiuser MIMO transmission in a cellular network may be performed by a base station (eNB) transmitting either one or two transmission layers. A user equipment (UE) receives a reference symbol from the base station. The UE processes the reference symbol with one or more of a plurality of preceding matrices to form a plurality of channel quality indices (CQI). The UE provides feedback to the eNB comprising one or more feedback CQI selected from the plurality of CQI and one or more preceding matrix indicators (PMI) identifying the one or more preceding matrices used to form each of the one or more feedback CQIs, wherein at least two PMI are included in the feedback.

Guard subcarrier placement in an OFDM symbol used for synchronization

Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter is for use with a base station in a cellular communication system and includes a partitioning unit configured to provide first and second groups of guard subcarriers that partition a synchronization portion from data portions in a downlink synchronization signal. The transmitter also includes a transmit unit configured to transmit the downlink synchronization signal. Additionally, the receiver is for use with user equipment in a cellular communication system and includes a receive unit configured to receive a downlink synchronization signal. The receiver also includes a processing unit configured to provide a synchronization portion based on employing first and second groups of guard subcarriers that partition the synchronization portion from data portions of the downlink synchronization signal.

User equipment (UE) a apparatus for channel state information feedback in a coordinated multi-point communication system

A method of operating a wireless communication system (FIG. 4) is disclosed. The method includes receiving a plurality of reference signals from a respective plurality of transceivers (402). Each of the plurality of reference signals is measured to produce a respective plurality of channel state information (CSI) measurements (404). An aggregated channel quality indicator (CQI) is calculated from measuring the plurality of reference signals (406). The aggregated CQI is transmitted to at least one transceiver of the respective plurality of transceivers (408).

Computer generated sequences for downlink and uplink signals in wireless communication systems

The present disclosure provides a base station transmitter, a user equipment transmitter and methods of operating the base station and user equipment transmitters. In one embodiment, the base station transmitter is for use with a cellular communication system and includes a synchronization unit configured to provide a randomly-generated constant amplitude zero autocorrelation (random-CAZAC) sequence corresponding to a downlink synchronization signal. Additionally, the base station transmitter also includes a transmit unit configured to transmit the downlink synchronization signal using the random-CAZAC sequence. In another embodiment, the user equipment transmitter is for use with a cellular communication system and includes a reference signal unit configured to provide a random-CAZAC sequence for an uplink reference signal corresponding to a one resource block allocation of the user equipment. The user equipment transmitter also includes a transmit unit configured to transmit the uplink ...

Closed loop multiple transmit, multiple receive antenna wireless communication system

A wireless receiver (74) for receiving signals from a transmitter (72). The transmitter comprises a plurality of transmit antennas (TAT1′, TAT2′) for transmitting the signals, which comprise respective independent streams of symbols. Additionally, interference occurs between the respective streams. The receiver comprises a plurality of receive antennas (RAT1′, RAT2′) for receiving the signals as influenced by a channel effect between the receiver and the transmitter. The receiver also comprises circuitry (80) for multiplying the signals times a conjugate transpose of an estimate of the channel effect and times a conjugate transpose of a linear basis transformation matrix. The receiver also comprises circuitry (84) for selecting the linear basis transformation matrix from a finite set of linear basis transformation matrices. Lastly, the receiver comprises circuitry (88) for removing the interference between the respective streams.

Method and apparatus for channel state information feedback in a coordinated multi-point communication system

A method of operating a wireless communication system (FIG. 4) is disclosed. The method includes receiving a plurality of reference signals from a respective plurality of transceivers (402). Each of the plurality of reference signals is measured to produce a respective plurality of channel state information (CSI) measurements (404). An aggregated channel quality indicator (CQI) is calculated from measuring the plurality of reference signals (406). The aggregated CQI is transmitted to at least one transceiver of the respective plurality of transceivers (408).

Physical downlink control channel and physical hybrid automatic repeat request indicator channel enhancements

A wireless transmission system included at least one user equipment and a base station. The base station is operable to form a downlink control information block, modulate the downlink control information, precode the modulated downlink control information, and transmit the precoded, modulated downlink control information on at least one demodulation reference signal antenna port to the at least one user equipment. The precoded, modulated downlink control information is mapped to a set of N1 physical resource block pairs in a subframe from an orthogonal frequency division multiplexing symbol T1 to and orthogonal frequency division multiplexing symbol T2.

Method for transmission of unicast control in broadcast/multicast transmission time intervals

Embodiments of the invention provide methods for maximizing the bandwidth utilization in the uplink of a communication system supporting time division multiplexing between unicast and multicast/broadcast communication modes during transmission time intervals in the downlink of a communication system. This is accomplished by multiplexing at least unicast control signaling for UL scheduling assignments in TTIs supporting the multicast/broadcast communication mode. Moreover, multiplexing of unicast control signaling can also be accomplished by splitting a symbol of the multicast/broadcast TTI into two shorter symbols with the first of these two shorter symbols carrying at least unicast control signaling and the second of these shorter symbols carrying multicast/broadcast signaling.

CODEBOOK SUB-SAMPLING FOR CSI FEEDBACK ON PUCCH FOR 4Tx MIMO

Channel state information (CSI) feedback in a wireless communication system is disclosed. User equipment transmits a CSI feedback signal via a Physical Uplink Control CHannel (PUCCH). If the UE is configured in a first feedback mode, the CSI comprises a first report jointly coding a Rank Indicator (RI) and a first precoding matrix indicator (PMI1), and a second report coding Channel Quality Indicator (CQI) and a second precoding matrix indicator (PMI2). If the UE is configured in a second feedback mode, the CSI comprises a first report coding RI, and a second report coding CQI, PMI1 and PMI2. The jointly coded RI and PMI1 employs codebook sub-sampling, and the jointly coding PMI1, PMI2 and CQI employs codebook sub-sampling. 13-. (canceled)57-. (canceled)8. The method of claim 4 , wherein indices of precoding matrices W1 and W2 are jointly encoded with CQI.9. The method of claim 4 , wherein the index of W1 is jointly encoded with the index of W2.10. The method of claim 4 , wherein indices PMI1 and PMI2 are jointly encoded with CQI.11. The method of claim 4 , wherein PMI1 is jointly encoded with PMI2.12. The method of claim 4 , wherein the transmitted first and second reports comprise a CSI feedback signal.15. The base station of claim 14 , wherein indices of precoding matrices W1 and W2 are jointly encoded with CQI.16. The base station of claim 14 , wherein the index of W1 is jointly encoded with the index of W2.17. The base station of claim 14 , wherein indices PMI1 and PMI2 are jointly encoded with CQI.18. The base station of claim 14 , wherein PMI1 is jointly encoded with PMI2.19. The base station of claim 14 , wherein the transmitted first and second reports comprise a CSI feedback signal.22. The base station of claim 21 , wherein indices of precoding matrices W1 and W2 are jointly encoded with CQI.23. The base station of claim 21 , wherein the index of W1 is jointly encoded with the index of W2.24. The base station of claim 21 , wherein indices PMI1 and PMI2 are ...

CODEBOOK SUB-SAMPLING FOR CSI FEEDBACK ON PUCCH FOR 4Tx MIMO

Channel state information (CSI) feedback in a wireless communication system () is disclosed. User equipment () transmits a CSI feedback signal via a Physical Uplink Control CHannel (PUCCH) (). If the UE is configured in a first feedback mode, the CSI comprises a first report jointly coding a Rank Indicator (RI) and a first precoding matrix indicator (PMI1) (), and a second report coding Channel Quality Indicator (CQI) and a second precoding matrix indicator (PMI2)(). If the UE is configured in a second feedback mode, the CSI comprises a first report coding RI (), and a second report coding CQI, PMI1 and PMI2 (). The jointly coded RI and PMI1 employs codebook sub-sampling, and the jointly coding PMI1, PMI2 and CQI employs codebook sub-sampling. 2. The method in claim 1 , wherein:sub-sampling of PMI1 skips W1 matrices with overlapping beams.37-. (canceled)8. The method of claim 1 , wherein indicators of precoding matrices W1 and W2 are jointly encoded with CQI.9. The method of claim 1 , wherein the index of W1 is jointly encoded with the index of W2.10. The method of claim 1 , wherein indices PMI1 and PMI2 are jointly encoded with CQI.11. The method of claim 1 , wherein PMI1 is jointly encoded with PMI2.12. The method of claim 1 , wherein the transmitted first and second reports comprise a CSI feedback signal.13. The method of claim 12 , wherein the CSI feedback signal is transmitted in a PUCCH transmission.16. The UE of claim 15 , wherein:sub-sampling of PMI1 skips W1 matrices with overlapping beams.17. The UE of claim 15 , wherein indicators of precoding matrices W1 and W2 are jointly encoded with CQI.18. The UE of claim 15 , wherein the index of W1 is jointly encoded with the index of W2.19. The UE of claim 15 , wherein indices PMI1 and PMI2 are jointly encoded with CQI.20. The UE of claim 15 , wherein PMI1 is jointly encoded with PMI2.21. The UE of claim 15 , wherein the transmitted first and second reports comprise a CSI feedback signal.22. The UE of claim 21 , ...

Turbo HSDPA system

A method of power saving for a wireless transceiver (FIGS. 1 and 2) is disclosed. The transceiver has an active power mode (504) and a reduced power mode (510). The transceiver is operated in the reduced power mode (510) and monitors transmissions from a remote wireless transmitter while in the reduced power mode. The transceiver identifies a transmission from in the remote wireless transmitter by a transceiver identity included in the transmission (FIG. 6, UE identification). The transceiver transitions to the active power mode (512) in response to identifying the transmission.

Mapping Schemes for Secondary Synchronization Signal Scrambling

Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter includes a synchronization unit configured to provide a primary synchronization signal and a secondary synchronization signal having first and second segments. The transmitter also includes a secondary scrambling unit configured to provide a scrambled secondary synchronization signal, wherein scrambling agents for the first and second segments are derived from a primary synchronization sequence of the primary synchronization signal. The secondary scrambling unit is further configured to provide an additional scrambling of one of the first and second segments, wherein a second scrambling agent is derived from the remaining segment of a secondary synchronization sequence of the secondary synchronization signal. The transmitter further includes a transmit unit configured to transmit the primary synchronization signal and the scrambled secondary synchronization signal. 1. A transmitter , comprising:a synchronization unit configured to provide a primary synchronization signal and a secondary synchronization signal having first and second segments;a secondary scrambling unit configured to provide a scrambled secondary synchronization signal wherein at least one scrambling agent for the first or second segment is derived from a primary synchronization sequence of the primary synchronization signal; anda transmit unit configured to transmit the primary synchronization signal and the scrambled secondary synchronization signal.231. The transmitter as recited in wherein the primary synchronization sequence is a length- sequence.3. The transmitter as recited in wherein the primary synchronization sequence is derived from an M-sequence.4. The transmitter as recited in further configured to provide an additional scrambling of one of the first and second segments claim 1 , wherein a second scrambling agent is derived from ...

Wireless Precoding Methods

Various wireless precoding systems and methods are presented. In some embodiments, a wireless transmitter comprises an antenna precoding block, a transform block, and multiple transmit antennas. The antenna precoding block receives frequency coefficients from multiple data streams and distributes the frequency coefficients across multiple transmit signals in accordance with frequency-dependent matrices. The transform block transforms the precoded frequency coefficients into multiple time domain transmit signals to be transmitted by the multiple antennas. The frequency coefficients from multiple data streams may be partitioned into tone groups, and all the frequency coefficients from a given tone group may be redistributed in accordance with a single matrix for that tone group. In some implementations, the frequency coefficients within a tone group for a given data stream may also be precoded. In some alternative embodiments, tone group precoding may be employed in a single channel system. 120-. (canceled)21. A wireless transmitter comprising:plural input serial data bit streams;bit allocation blocks having inputs coupled to the input serial data streams and having outputs, the bit allocation blocks apportioning data bits among available tones and each bit allocation block outputting a quadrature amplitude modulation (QAM) constellation signal point for each tone;tone group precoding matrix blocks having inputs coupled to the outputs of the bit allocation blocks and having outputs, the tone group precoding matrix blocks distributing signal energy across the tone groups for each of the multiple data streams to distribute the data bits across multiple tones and maximize the communications bandwidth of the system;antenna precoding matrix blocks having inputs coupled to the outputs of the tone group precoding matrix blocks and having outputs, the antenna precoding matrix blocks being applied to the tones to distribute the energy of the tones across the outputs of the ...

Method for Transmission of Unicast Control in Broadcast/Multicast Transmission Time Intervals

Embodiments of the invention provide methods for maximizing the bandwidth utilization in the uplink of a communication system supporting time division multiplexing between unicast and multicast/broadcast communication modes during transmission time intervals in the downlink of a communication system. This is accomplished by multiplexing at least unicast control signaling for UL scheduling assignments in TTIs supporting the multicast/broadcast communication mode. Moreover, multiplexing of unicast control signaling can also be accomplished by splitting a symbol of the multicast/broadcast TTI into two shorter symbols with the first of these two shorter symbols carrying at least unicast control signaling and the second of these shorter symbols carrying multicast/broadcast signaling. 32. A method to schedule a data transmission from a User Equipment (UE) wherein said scheduling occurs in a multicast/broadcast Transmission Time Interval (TTI) , said method comprising:sending a unicast control signaling by an user Equipment (UE);receiving at the UE multicast/broadcast data in a multicast/broadcast transmission time interval (TTI), wherein said unicast control signaling is multiplexed with said multicast/broadcast data, and wherein said unicast signaling comprises only unicast control signaling and unicast pilot signaling; andtransmitting from said UE unicast data signaling in a TTI in response to the reception of said unicast control signaling in said multicast/broadcast TTI.33. The method of claim 32 , wherein said unicast control signaling provides scheduling assignments for data signal transmission.34. The method of claim 32 , wherein said unicast control signaling provides timing control or power control information.35. The method of claim 34 , wherein said UE adjusts its signal transmission power or its signal transmission timing in response to said timing control or power control information claim 34 , respectively.36. The method of claim 32 , wherein said unicast ...

User Equipment Feedback In Support of Multiple Input Multiple Output Operations

A method of feedback in wireless telephony includes a hybrid of implicit and explicit feedback. The implicit and explicit feedback are transmitted in distinct subframes. These distinct set of subframes may have the same periodicity but differing offsets. The distinct set of subframes may have periodicities related by an integral factor. Either set of subframes may include aperiodic subframes. 1. A method of wireless telephony including transmitting feedback control information from a user equipment to at least one base station comprising the steps of:transmitting data in a series of sequential subframes;transmitting implicit feedback in a first set of subframes, the implicit feedback including data of a channel observed by receiver assuming including at least a part of the receiver processing; andtransmitting explicit feedback in a second set of subframes distinct from said first set of subframes, the explicit feedback including data of a channel observed by receiver without assuming transmission or receiver processing.2. The method of claim 1 , wherein:said first set of subframes are subframes having a first periodicity and a first offset; andsaid second set of subframes are subframes having said first periodicity and a second offset different from said first offset.3. The method of claim 1 , wherein:said first set of subframes are subframes having a first periodicity and a first offset; andsaid second set of subframes are subframes having a second periodicity different from said first periodicity and a second offset different from said first offset.4. The method of claim 3 , wherein:{'b': 1', '1, 'said first periodicity is once per N subframes, where N is an integer;'}{'b': 2', '2', '1, 'said second periodicity is once per N subframes, where N=M*N and M is a positive integer.'}5. The method of claim 3 , wherein:said first set of subframes further includes at least one aperiodic subframe.6. The method of claim 3 , wherein:said second set of subframes further ...

Downlink 8 Tx Codebook Sub-Sampling for CSI Feedback

This invention is codebook sub-sampling of the reporting of RI, CQI, W 1 and W 2 . If CSI mode 1 is selected RI and W 1 are jointly encoded using codebook sub-sampling in report 1 . If CSI mode 2 is selected W 1 and W 2 are jointly encoded using codebook sub-sampling in report 2.

Periodic Channel Quality Indicator on Physical Uplink Control Channel for Carrier Aggregation

This application considers the need for enhancements to the baseline CSI reporting mechanisms including maximum payload size, CQI/PMI reporting configurations and CSI transmission in the event of collision between CSI reports from different CCs. 1. A method of wireless telephony comprising the steps of:periodic uplink transmission from a mobile user equipment to a base station of channel state information (CSI) including channel quality indicator/precoding matrix indicator/rank indicator on a physical uplink control channel (PUCCH) using the same physical uplink control channel (PUCCH) channel state information (CSI) reporting modes for all downlink serving cells.2. The method of claim 1 , wherein:the same physical uplink control channel (PUCCH) channel state information (CSI) reporting mode is not used for each downlink serving cell.3. The method of claim 1 , wherein:the rank indicator of a first downlink serving cell is not concatenated with the rank indicator of a different serving cell on the physical uplink control channel (PUCCH) in the same subframe.4. The method of claim 1 , wherein:the rank indicator of a first serving cell and is not concatenated with the channel quality indicator and the precoding matrix indicator of a second serving on the physical uplink control channel (PUCCH) in the same subframe.5. The method of claim 1 , wherein:a maximum rank indicator and channel quality indicator/precoding matrix indicator payload per serving cell depends on the physical uplink control channel (PUCCH) channel state information mode selection.6. The method of claim 5 , further comprising:re-using LTE Rel. 8 RM code if the rank indicator and precoding matrix indicator/channel quality indicator payload does not exceed 11 bits.7. The method of claim 1 , further comprising:prioritizing channel state information (CSI) reports having the same channel state information (CSI) mode but different channel state information (CSI) types, where a first channel state information ...

Multi-Cell Channel State Information-Reference Symbol Patterns for Long Term Evolution Extended Cyclic Prefix and Code Division Multiplexing-Time Multiplexing

This invention is a method of wireless communication using candidate multi-cell CSI-RS time-frequency patterns in the invention. This invention avoids collision with antenna ports 0, 1, 2 and 3 used for transmitting cell-specific reference signals and port 5 used for transmitting demodulation reference signals. This invention satisfies the nested property requirement. This invention avoids collision with DM-RS signal for extended cyclic prefix transmission as long as DMRS Rank is less than or equal to 2. For ranks greater than 2, this invention produces patterns that may collide with Rel. 10 DM-RS for extended CP. The invention includes alternative patterns obtained by relabeling and/or reshuffling the CSI-RS antenna port numbers while preserving identical time-frequency resources assigned to CSI-RS in the time-frequency grid. 1. A method of wireless communication of channel state information-reference symbols (CSI-RS) between a base station having multiple antenna and at least one user equipment in code division multiplexing-time (CDM-T) multiplexing comprising the steps of:each user equipment determining a cell group CSI-RS pattern in physical resource blocks (PRBs) having an X-axis of time in Orthogonal Frequency Division Multiplexing (OFDM) symbols and a Y-axis of frequency in Resource Elements (RE) from Cell-ID modulo 3;each user equipment mapping their Cell-ID to an element in a set of candidate OFDM pairs to choose a corresponding OFDM symbol pair on which to transmit CDM-T multiplexed CSI-RS pilots, thereby determining ODFM symbol locations for Access Point (AP) 0;each user equipment determining a RE offset for AP 0 from the value of Cell-ID modulo 3; andeach user equipment transmitting expanded cyclic prefix (CP) CSI-RS signals on the determined portions of the PRB.2. The method of claim 1 , wherein:said step of determining a cell group CSI-RS pattern in PRBs determines (10, 11).3. The method of claim 2 , wherein: 1 for a Cell-ID of 0 modulo 3,', '0 for a ...

Implicit CSI Feedback for DL Multiuser MIMO Transmission

This invention is method of implicit channel state information (CSI) feedback for multiuser multiple input, multiple output (MU-MIMO) communication between a base station (eNB) and a plurality of user equipment (UE). Each user equipment reporting a plurality of single user precoding matrix indicators (PMI) including a first PMI indicating a recommended optimum precoding matrix and at least one further PMI indicating information for beamforming at said base station. The base station communicates with each user equipment based on precoding matrix indicators received from the plurality of user equipment. 1. A method of implicit channel state information (CSI) feedback for communication between a base station (eNB) and a plurality of user equipment (UE) , comprising the steps of: a first PMI indicating a recommended optimum precoding matrix for single user multiple input, multiple output (SU-MIMO) communication between said base station (eNB) and said user equipment, and', 'at least one further PMI indicating information for beamforming at said base station; and, 'each user equipment reporting a plurality of single user precoding matrix indicators (PMI) including'}the base station communicating with each user equipment based on precoding matrix indicators received from the plurality of user equipment.2. The method of claim 1 , wherein:said at least one further PMI indicates a maximum distance to the first PMI.3. The method of claim 2 , wherein:said maximum distance is a Euclidean distance.4. The method of claim 2 , wherein:said maximum distance is a Fubini-norm distance.5. The method of claim 1 , wherein:said at least one further PMI indicates a minimum distance to the first PMI.6. The method of claim 5 , wherein:said maximum distance is a Euclidean distance.7. The method of claim 5 , wherein:said maximum distance is a Fubini-norm distance.8. The method of claim 1 , wherein:said at least one further PMI indicates a highest correlation to the first PMI.9. The method of ...

PHYSICAL DOWNLINK CONTROL CHANNEL AND PHYSICAL HYBRID AUTOMATIC REPEAT REQUEST INDICATOR CHANNEL ENHANCEMENTS

A wireless transmission system included at least one user equipment and a base station. The base station is operable to form a downlink control information block, modulate the downlink control information, precode the modulated downlink control information, and transmit the precoded, modulated downlink control information on at least one demodulation reference signal antenna port to the at least one user equipment. The precoded, modulated downlink control information is mapped to a set of N1 physical resource block pairs in a subframe from an orthogonal frequency division multiplexing symbol T to and orthogonal frequency division multiplexing symbol T 1. A method of wireless transmission from a base station to at least one user equipment , comprising the steps of:forming a downlink control information block;modulating the downlink control information;precoding the modulated downlink control information; and{'b': 1', '2, 'transmitting the precoded, modulated downlink control information on at least one demodulation reference signal antenna port to the at least one user equipment, wherein the precoded, modulated downlink control information is mapped to a set of N1 physical resource block pairs in a subframe from an orthogonal frequency division multiplexing symbol T to and orthogonal frequency division multiplexing symbol T.'}2. The method of claim 1 ,wherein:the downlink control information is a downlink assignment or an uplink grant.3. The method of claim 1 , wherein:the precoded, modulated downlink control information is transmitted on one demodulation reference signal antenna port.4. The method of claim 1 , wherein:the precoded, modulated downlink control information is transmitted on more than one demodulation reference signal antenna ports.5. The method of claim 1 , wherein:the at least one demodulation reference signal antenna port is configured by higher-layer signaling.6. The method of claim 1 , wherein:the at least one demodulation reference signal antenna ...

Configuration of rank indicator reporting instances

A method for setting a periodicity and an offset in rank indicator (RI) reporting in a user equipment in a wireless communication system receives a radio resource control (RRC) signal from a base station, decodes a RI periodicity and offset configuration index, sets the periodicity and offset in accordance with said decoded periodicity and offset configuration index and reports a RI according to the set periodicity and offset. The periodicity is an integer and reporting a RI reports with equal the product of the periodicity and a period of reporting of the channel quality indicator (CQI) and the precoding matrix indicator (PMI).

NETWORK MIMO REPORTING, CONTROL SIGNALING AND TRANSMISSION

A coordinated multipoint transmitter is for use with a network MIMO super-cell and includes a coordination unit configured to provide joint link processing to coordinate a multipoint transmission corresponding to a set of transmission points. Additionally, the coordinated multipoint transmitter also includes a transmission unit configured to transmit the multipoint transmission using the set of transmission points. Additionally, a coordinated transmission receiver is for use with a network MIMO super-cell and includes a reception unit configured to receive a multipoint transmission corresponding to a set of transmission points. The coordinated transmission receiver also includes a processing unit configured to process the multipoint transmission from the set of transmission points. 1. A coordinated multipoint transmitter for use with a network MIMO super-cell , comprising:a coordination unit configured to provide joint link processing to coordinate a multipoint transmission corresponding to a set of transmission points; anda transmission unit configured to transmit the multipoint transmission using the set of transmission points.2. The transmitter as recited in wherein the multipoint transmission corresponds to the set of transmission points selected from the group consisting of:a statically configured set;a semi-statically configured set; anda dynamically configured set.3. The transmitter as recited in wherein the joint link processing provides a joint link adaptation for a portion of the set of transmission points that is based on CQI claim 1 , PMI or RI feedback from user equipment.4. The transmitter as recited in wherein the joint link processing provides uplink and downlink signaling for a portion of the set of transmission points that is based on CQI claim 1 , PMI or RI feedback from user equipment.5. The transmitter as recited in wherein the joint link processing provides different multipoint transmissions or a same multipoint transmission for a portion of ...

Carrier Indication In a Bandwidth Aggregated Wireless Communications Systems

In this invention wireless communication of data between a user equipment and a base station including bandwidth aggregation of a plurality of component carriers, includes a first unit transmitting on a first component carrier a grant control signal the other unit specifying a second component carrier different to transmit the typically via a carrier indication field of 3 bits. The carrier indication field can be a one-to-one mapping to each possible second component carrier of a component carrier offset from an anchor carrier, which could be the first component carrier. 1. A method of wireless communication of data between a user equipment and a base station including bandwidth aggregation of a plurality of component carriers , comprising the steps of:a first unit of the user equipment or the base station transmitting in a first component carrier to the other unit of the user equipment or the base station a grant control signal indicating grant of schedule to transmit data from said other unit to said first unit, said grant control signal specifying a second component carrier different from said first component carrier to transmit said data; andsaid other unit transmitting said data to said first unit on said second component carrier.2. The method of claim 1 , wherein:said first unit transmits a carrier indication field indicating said second component carrier.3. The method of claim 2 , wherein:said carrier indication field includes 3 bits.4. The method of claim 2 , wherein:said carrier indication field includes an encoding having a one-to-one mapping to each possible second component carrier.5. The method of claim 2 , wherein:said carrier indication field includes an encoding specifying a component carrier offset from an anchor carrier.6. The method of claim 5 , wherein:a positive carrier indication field specifies a component carrier having a frequency higher than a frequency of said anchor carrier; anda negative carrier indication field specifies a component ...

ON TRANSPARENCY OF CoMP

This invention is a technique for coordinate multi-point wireless transmission between plural base stations and user equipment. At least one base station transmits via a Physical Downlink Shared CHannel (PDSCH). The user equipment does not know the identity of the plural base stations. This could include joint transmission by simultaneous data transmission from multiple base stations. This could include dynamic point selection by data transmission from one base station at a time and changing the transmitting point (TP) from one subframe to another subframe. This could include coordinated scheduling/beamforming (CS/CB) where data is transmitted to the user equipment from one base station at a time and the base stations communicate to coordinate user scheduling and beamforming. The transmission point (TP) could vary over Resource Block (RB) pairs within a subframe while never transmitting from more than one base station. The transmission point (TP) could change in a semi-static fashion. 1. A method of coordinate multi-point (CoMP) wireless transmission between a plurality of base stations and at least on user equipment comprising the steps of:transmitting a data message to the user equipment by at least one of the plurality of base stations;receiving the data message transmissions at the user equipment without the user equipment knowing the identity of the plural base stations.2. The method of claim 1 , wherein:coordination between the plurality of base stations in each physical resource block (PRB) and time instance includes joint transmission by simultaneous data transmission from multiple base stations; andthe user equipment receives the data message transmission without knowing the coordination schemes between the plurality of base stations in each physical resource block (PRB) and time instance.3. The method of claim 1 , wherein:coordination between the plurality of base stations in each physical resource block (PRB) and time instance includes dynamic point ...

PRECODING CODEBOOK DESIGN FOR SINGLE USER MIMO

A transmitter is for use with multiple transmit antennas and includes a precoder unit configured to precode data for a transmission using a precoding matrix selected from a codebook, wherein the codebook corresponds to the following three transmission properties for an uplink transmission: 1) all precoding elements from the precoding matrix have a same magnitude, 2) each precoding element from the precoding matrix is taken from a set of finite values and 3) there is only one non-zero element in any row of the precoding matrix. The transmitter also includes a transmit unit configured to transmit the precoded data. 1. A transmitter for use with multiple transmit antennas , comprising:a precoder unit configured to precode data for a transmission using a precoding matrix selected from a codebook, wherein the codebook corresponds to the following three transmission properties for an uplink transmission: 1) all precoding elements from the precoding matrix have a same magnitude, 2) each precoding element from the precoding matrix is taken from a set of finite values and 3) there is only one non-zero element in any row of the precoding matrix; anda transmit unit configured to transmit the precoded data.3. The transmitter as recited in wherein the codebook for a rank-2 transmission corresponds to a set of four-by-two matrices with one column having two non-zero elements in two adjacent rows claim 1 , a remaining column having two non-zero elements in two remaining adjacent rows and zero elements in all remaining element positions.5. The transmitter as recited in wherein the codebook for a rank-3 transmission corresponds to a set of four-by-three matrices with a first column having two non-zero elements claim 1 , a second column having one non-zero element claim 1 , a third column having one non-zero element and zero elements in all remaining element positions.7. A method of operating a transmitter for use with multiple transmit antennas claim 1 , comprising:selecting a ...

JOINT PROCESSING DOWN LINK COORDINATED MULTI-POINT REFERENCE SIGNAL SUPPORT

This invention concerns multiplexing in Long Term Evolution (LTE) and Long Term Evolution-Advanced (LTE-A) in Evolved Universal Terrestrial Radio Access Network (E-UTRAN) wireless telephony. Joint processing down link coordinated multi-point reference signaling includes combining resource signal types at a user equipment, determining conflicts between resource signals of plural user equipment, puncturing resource signals of other cell upon determining conflicts between resource signals of plural user equipment and transmitting non-punctured combined resource signals from a user equipment. 1. A method of joint processing down link coordinated multi-point reference signaling comprising the steps of:combining resource signal types at a user equipment;determining conflicts between resource signals of plural user equipment;puncturing resource signals of other cell upon determining conflicts between resource signals of plural user equipment; andtransmitting non-punctured combined resource signals from a user equipment.2. The method of claim 1 , wherein:said step of combining resource signal types includes coherent combining.3. The method of claim 2 , wherein:said step of transmitting non-punctured combined resource signals includes frequency division multiplexing; andsaid step of puncturing resource signals includes puncturing a Physical Downlink Shared CHannel (PDSCH) resource element.4. The method of claim 4 , wherein:said step of transmitting non-punctured combined resource signals includes frequency division multiplexing; andsaid method further comprising reusing a cell-specific reference signal for a Physical Downlink Shared CHannel (PDSCH) resource element.5. The method of claim 1 , wherein:said step of combining resource signal types includes non-coherent combining.6. The method of claim 5 , wherein:said step of transmitting non-punctured combined resource signals includes time division multiplexing; andsaid method further comprising reusing a cell-specific ...

ANTENNA GROUPING AND GROUP-BASED ENHANCEMENTS FOR MIMO SYSTEMS

Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter has at least three transmit antennas and includes a feedback decoding portion configured to recover at least one group-based channel quality indicator provided by a feedback signal from a receiver, wherein each group-based channel quality indicator corresponds to one of a set of transmission layer groupings. The transmitter also includes a modulator portion configured to generate at least one symbol stream and a mapping portion configured to multiplex each symbol stream to at least one transmission layer grouping. The transmitter further includes a pre-coder portion configured to couple the transmission layers to the transmit antennas for a transmission. The receiver includes a decoder portion which is configured to use decoded signals from at least one group to decode the other groups. 124-. (canceled)25. A receiver , comprising:a receive portion employing a transmission from a transmitter having at least three transmit antennas and capable of a transmission layer mapping;a stream decoder portion configured to separate and demultiplex transmission layers corresponding to the transmission layer mapping; anda feedback generator portion configured to provide at least one group-based channel quality indicator that is fed back to the transmitter, wherein each group-based channel quality indicator corresponds to one of a set of transmission layer mappings.26. The receiver as recited in wherein the feedback generator portion provides the group-based channel quality indicator based on employing a group successive interference cancellation decoding claim 25 ,27. The receiver as recited in wherein the feedback generator portion provides the group-based channel quality indicator as a combination of individual channel quality indicators respectively corresponding to each transmission layer of the transmission layer ...

BACKWARD COMPATIBLE BANDWIDTH EXTENSION

A transmitter includes a bandwidth configuration unit configured to provide an increased system bandwidth corresponding to a bandwidth extension over multiple component carriers Additionally, the transmitter also includes a transmit unit configured to employ the bandwidth extension. 1. An apparatus comprising:a bandwidth configuration unit configured to provide control information in an increased bandwidth corresponding to a bandwidth extension over multiple component carriers; anda transmit unit configured to employ the bandwidth extension.2. The apparatus as recited in wherein the bandwidth extension jointly aggregates multiple contiguous component carriers into a single carrier of larger bandwidth.3. The apparatus as recited in wherein the bandwidth extension constitutes multiple separate non-contiguous component carriers.4. The apparatus as recited in wherein the bandwidth extension includes common control information that occupies only one component carrier or is replicated in all component carriers.5. The apparatus as recited in wherein the bandwidth extension includes dedicated control information that occupies at least one component carrier.6. (canceled)7. A method of operating a transmitter claim 1 , comprising:providing control information in an increased bandwidth corresponding to a bandwidth extension over multiple component carriers; andtransmitting from said transmitter in accordance to the bandwidth extension.8. The method as recited in wherein the bandwidth extension includes common control information that occupies only one component carrier or is replicated in all component carriers.9. The method as recited in wherein the bandwidth extension includes dedicated control information that occupies at least one component carrier.10. (canceled)11. A receiver claim 7 , comprising:a receive unit configured to receive a transmission having control information in an increased bandwidth; anda bandwidth adaptation unit configured to apply the increased ...

CQI FEEDBACK FOR MIMO DEPLOYMENTS

The present disclosure provides a receiver, a transmitter and methods of operating a receiver and a transmitter. In one embodiment, the receiver includes a receive portion employing transmission signals from a transmitter, having multiple transmit antennas, that is capable of transmitting at least one spatial codeword and adapting a transmission rank. The receiver also includes a feedback generator portion configured to provide a channel quality indicator that is feedback to the transmitter, wherein the channel quality indicator corresponds to at least one transmission rank. 1. A receiver , comprising:a receive portion employing transmission signals from a transmitter having multiple transmit antennas that is capable of transmitting at least one spatial codeword and adapting a transmission rank; anda feedback generator portion configured to provide a channel quality indicator that is feedback to the transmitter, wherein the channel quality indicator corresponds to at least one transmission rank.2. The receiver as recited in wherein the channel quality indicator corresponds to a preferred transmission rank.3. The receiver as recited in wherein the channel quality indicator corresponds to a channel quality of a plurality of transmission ranks.4. The receiver as recited in wherein the channel quality indicator corresponds to a channel quality across at least one spatial codeword.5. The receiver as recited in wherein the channel quality indicator corresponding to a spatial codeword is represented as a difference relative to another channel quality indicator corresponding to another spatial codeword.6. The receiver as recited in wherein the channel quality indicator corresponds to a channel quality across distinct spatial codewords for a multiple codeword transmission.7. The receiver as recited in wherein the channel quality indicator corresponds to a channel quality across distinct spatial layers.8. The receiver as recited in wherein the channel quality indicator ...

TRANSMISSION MODES AND SIGNALING FOR UPLINK MIMO SUPPORT OR SINGLE TB DUAL-LAYER TRANSMISSION IN LTE UPLINK

An apparatus for mapping data in a wireless communication system. The apparatus includes circuitry for generating a precoding matrix for multi-antenna transmission based on a precoding matrix indicator (PMI) feedback from at least one remote receiver where the PMI indicates a choice of precoding matrix derived from a matrix multiplication of two matrices from a first code book and a second codebook. The apparatus further includes circuitry for precoding one or more layers of a data stream with the precoding matrix and transmitting the precoded layers of data stream to the remove receiver. 29. The apparatus of claim 23 , wherein:the PMI feedback consists of two indices it and 12 which are periodically transmitted within a same set of subframes.30. The apparatus of claim 23 , wherein:the PMI feedback consists of two indices i1 and i2, i1 periodically transmitted within a same set of sublimes as a rank indicator feedback, and i2 periodically transmitted within a different set of subframes from i1. This application is a Continuation of application Ser. No. 13/098,967 filed May 2, 2011, which claims priority under 35 U.S.C. 119(e) (1) to U.S. Provisional Application No. 61/329,864 filed Apr. 30, 2010, U.S. Provisional Application No. 61/331,466 filed May 5, 2010, U.S. Provisional Application No. 61/351,061 filed Jun. 3, 2010 U.S. Provisional Application No. 61/355,850 filed Jun. 17, 2010, U.S. Provisional Application No. 61/357,382 filed Jun. 22, 2010, U.S. Provisional Application No. 61/364,671 filed Jul. 15, 2010, U.S. Provisional Application No. 61/369,369 filed Jul. 33, 2010, and U.S. Provisional Application No. 61/372,608 filed Aug. 11, 2010.The technical field of this invention is wireless communication such as wireless telephony.The present embodiments relate to wireless communication systems and, more particularly, to the precoding of Physical Downlink Shared Channel (PDSCH) data and dedicated reference signals with codebook-based feedback for multi-input multi- ...

Transmission modes and signaling for uplink mimo support or single tb dual-layer transmission in lte uplink

An apparatus for mapping data in a wireless communication system. The apparatus includes circuitry for generating a precoding matrix for multi-antenna transmission based on a precoding matrix indicator (PMI) feedback from at least one remote receiver where the PMI indicates a choice of precoding matrix derived from a matrix multiplication of two matrices from a first code book and a second codebook. The apparatus further includes circuitry for precoding one or more layers of a data stream with the precoding matrix and transmitting the precoded layers of data stream to the remove receiver.

DATA AND CONTROL MULTIPLEXING IN PUSCH IN WIRELESS NETWORKS

Transmission of information in a wireless network is performed by allocating a channel from a transmitter to a receiver. The channel has at least one time slot with each time slot having a plurality of symbols. Each slot contains at least one reference symbol (RS). As information becomes available for transmission, it is classified as prioritized information (PI) and other information. One or more priority symbols are generated using the digital samples of the priority information. Other symbols are generated using the other data. Priority symbols are transmitted on the channel in a manner that separation of priority symbol(s) and a reference symbol does not exceed a time duration of one symbol. For example, Rank Indicator (RI) is transmitted using symbol k, ACKNAK is transmitted using symbol k+1; and the reference signal (RS) is transmitted using symbol k+2, wherein symbols k, k+1, and k+2 are consecutive in time. The other symbols are transmitted in available locations. 1. A method for transmitting in a wireless network , comprising:transmitting a Rank Indicator (RI) using symbol k;transmitting an ACKNAK using symbol k+1; andtransmitting a reference signal (RS) using symbol k+2,wherein symbols k, k+1, and k+2 are consecutive in time.2. The method of claim 1 , further comprising:transmitting the ACKNAK using symbol k+3; andtransmitting the Rank Indicator (RI) using symbol k+4,wherein symbols k, k+1, k+2, k+3, and k+4 are consecutive in time.3. The method of ; further comprisingencoding physical uplink shared channel (PUSCH) data using a turbo encoder; andtransmitting the encoded PUSCH data using symbols k−1 and k+5,wherein symbols k−1, k, k+1, k+2, k+3, k+4, and k+5 are consecutive in time.4. The method of ; further comprising: transmitting the encoded PUSCH data using at least one of the symbols from the set {k claim 3 , k+1 claim 3 , k+3 claim 3 , k+4}.5. The method of ; wherein transmitting comprises:producing a set A[k+1] of samples by modulating said ACKNAK; ...

Physical Downlink Control Channel and Physical Hybrid Automatic Repeat Request Indicator Channel Enhancements

A wireless transmission system included at least one user equipment and a base station. The base station is operable to form a downlink control information block, modulate the downlink control information, precode the modulated downlink control information, and transmit the precoded, modulated downlink control information on at least one demodulation reference signal antenna port to the at least one user equipment. The precoded, modulated downlink control information is mapped to a set of N physical resource block pairs in a subframe from an orthogonal frequency division multiplexing symbol T to and orthogonal frequency division multiplexing symbol T 160-. (canceled)61. A method of operating a user equipment (UE) , comprising:configuring the user equipment (UE) to receive a Demodulation Reference Signal (DMRS)-based physical downlink control channel (D-PDCCH), wherein the D-PDCCH is scrambled with a scrambling sequence ID (SCID) of 0 or 1.62. The method of wherein the user equipment (UE) is configured to decode the D-PDCCH on antenna port 8 with a SCID of 0.63. The method of wherein the user equipment (UE) is configured to decode a downlink grant in D-PDCCH on a first antenna port claim 62 , and decode an uplink grant on a second antenna port.64. The method of wherein the first antenna port is antenna port 7 and the second antenna port is antenna port 8.65. The method of claim 64 , wherein the user equipment (UE)-specific antenna port and SCID for D-PDCCH are dynamically signaled by a D-PDCCH-configuration-grant.66. The method of claim 65 , wherein the D-PDCCH-configuration-grant dynamically signals the antenna port and SCID of the corresponding D-PDCCH.67. The method of claim 66 , wherein the user equipment (UE) first decodes the D-PDCCH-configuration-grant to obtain the antenna Port (AP) and SCID information claim 66 , then proceeds to decode D-PDCCH.68. The method of claim 66 , wherein the user equipment (UE) is configured by higher layer signaling to receive D- ...

CODEBOOK SUB-SAMPLING FOR CSI FEEDBACK ON PUCCH FOR 4Tx MIMO

Channel state information (CSI) feedback in a wireless communication system is disclosed. User equipment transmits a CSI feedback signal via a Physical Uplink Control CHannel (PUCCH). If the UE is configured in a first feedback mode, the CSI comprises a first report jointly coding a Rank Indicator (RI) and a first precoding matrix indicator (PMI1), and a second report coding Channel Quality Indicator (CQI) and a second precoding matrix indicator (PMI2). If the UE is configured in a second feedback mode, the CSI comprises a first report coding RI, and a second report coding CQI, PMI1 and PMI2. The jointly coded RI and PMI1 employs codebook sub-sampling, and the jointly coding PMI1, PMI2 and CQI employs codebook sub-sampling. 2. The method in claim 1 , wherein:sub-sampling of PMI1 skips W1 matrices with overlapping beams.6. A method of channel state information (CSI) feedback between a base station and at least a user equipment claim 1 , comprising:transmitting, by the user equipment, a CSI feedback signal having:a first report coding a Rank Indicator (RI) and a precoding type indicator (PTI), andif the PTI is equal to a first state, a second report comprising a first precoding matrix indicator (PMI1) associated with the index of a first precoding matrix (W1), and a third report comprising a Channel Quality Indicator (CQI) and a second precoding matrix indicator (PMI2) associated with the index of a second precoding matrix (W2), andif the PTI is equal to a second state, a second report comprising a wideband Channel Quality Indicator (CQI) and a wideband second precoding matrix indicator (PMI2) associated with a wideband second precoding matrix (W2), and a third report comprising a subband CQI and a subband second precoding matrix indicator (PMI2) associated with a subband second precoding matrix (W2); andsaid step of reporting the subband PMI2 and subband CQI employs codebook sub-sampling, wherein sub-sampling of PMI2 includes at least a first W2 matrix associated ...

MULTI-RANK PRECODING MATRIX INDICATOR (PMI) FEEDBACK IN A MULTIPLE-INPUT MULTIPLE-OUTPUT (MIMO) SYSTEM

In at least some embodiments, a system includes a multiple-input multiple-output (MIMO) base station and a plurality of MIMO user equipment (UE) devices in communication with the MIMO base station. The MIMO base station is configured to switch between a single-user (SU)-MIMO mode and a multiple-user (MU)-MIMO mode during communications with the plurality of MIMO UE devices based on multi-rank precoding matrix indicator (PMI) feedback received from at least one of the MIMO UE devices. 1. A system , comprising:a multiple-input multiple-output (MIMO) base station; anda plurality of MIMO user equipment (UE) devices in communication with the MIMO base station;wherein the MIMO base station is configured to switch between a single-user (SU)-MIMO mode and a multiple-user (MU)-MIMO mode during communications with the plurality of MIMO UE devices based on multi-rank precoding matrix indicator (PMI) feedback received from at least one of the MIMO UE devices.2. The system of wherein the multi-rank PMI feedback comprises:a first PMI corresponding to a recommended precoding matrix for SU-MIMO communications between the MIMO base station and the plurality of MIMO UE devices, and a rank indicator (RI) corresponding to the rank value of the first PMI, anda second PMI corresponding to a precoding matrix of a pre-defined restricted rank value applicable for MU-MIMO communications between the base station and the plurality of MIMO UE devices.3. The system of wherein each MIMO UE device is configured to report said first and second PMIs periodically claim 2 , wherein the reporting periodicity of said second PMI is equal to the reporting periodicity of said first PMI.4. The system of wherein each MIMO UE device is configured to report said first and second PMIs periodically claim 2 , wherein the reporting periodicity of said second PMI is not equal to the reporting periodicity of said first PMI.5. The system of wherein the said pre-defined restricted rank value is configured by a higher ...

PSEUDORANDOM SEQUENCE GENERATION FOR OFDM CELLULAR SYSTEMS

In one embodiment, a transmitter includes a binary sequence generator unit configured to provide a sequence of reference signal bits, wherein the sequence is an inseparable function of a cell identification parameter, a cyclic prefix mode corresponding to the transmitter and one or more time indices of the sequence. The transmitter also include a mapping unit that transforms the sequence of reference signal bits into a complex reference signal, and a transmit unit configured to transmit the complex reference signal. In another embodiment, a receiver includes a receive unit configured to receive a complex reference signal and a reference signal decoder unit configured to detect a sequence of reference signal bits from the complex reference signal, wherein the sequence is an inseparable function of a cell identification parameter, a cyclic prefix mode corresponding to a transmitter and one or more time indices of the sequence. 1. A transmitter , comprising:a binary sequence generator unit configured to provide a sequence of reference signal bits, wherein the sequence is an inseparable function of a Cell identification parameter, a cyclic prefix mode corresponding to the transmitter and one or more time indices of the sequence;a mapping unit that transforms the sequence of reference signal bits into a complex reference signal; anda transmit unit configured to transmit the complex reference signal.2. The transmitter as recited in wherein the sequence of reference signal bits is generated by a linear feedback shift register capable of employing an initial seed claim 1 , an update equation and a fast forward parameter.3. The transmitter as recited in wherein the fast forward parameter of the linear feedback shift register is a function of the cell identification parameter and one or more of the time indices.4. (canceled)5. The transmitter as recited in wherein the initial seed of the linear feedback shift register is a sum of terms and each term is proportional to a ...

PHYSICAL DOWNLINK CONTROL CHANNEL AND PHYSICAL HYBRID AUTOMATIC REPEAT REQUEST INDICATOR CHANNEL ENHANCEMENTS

A wireless transmission system included at least one user equipment and a base station. The base station is operable to form a downlink control information block, modulate the downlink control information, precode the modulated downlink control information, and transmit the precoded, modulated downlink control information on at least one demodulation reference signal antenna port to the at least one user equipment. The precoded, modulated downlink control information is mapped to a set of N1 physical resource block pairs in a subframe from an orthogonal frequency division multiplexing symbol T1 to and orthogonal frequency division multiplexing symbol T2. 1. A method of wireless transmission from a base station to at least one user equipment , comprising the steps of:forming a downlink control information block;modulating the downlink control information;precoding the modulated downlink control information; andtransmitting the precoded, modulated downlink control information on at least one demodulation reference signal antenna port to the at least one user equipment, wherein the precoded, modulated downlink control information is mapped to a set of N1 physical resource block pairs in a subframe from an orthogonal frequency division multiplexing symbol T1 to and orthogonal frequency division multiplexing symbol T2.2. The method of claim 1 , wherein:the downlink control information is a downlink assignment or an uplink grant.3. The method of claim 1 , wherein:the precoded, modulated downlink control information is transmitted on one demodulation reference signal antenna port.4. The method of claim 1 , wherein:the precoded, modulated downlink control information is transmitted on more than one demodulation reference signal antenna ports.5. The method of claim 1 , wherein:the at least one demodulation reference signal antenna port is configured by higher-layer signaling.6. The method of claim 1 , wherein:the at least one demodulation reference signal antenna port is ...

DOWNLINK 8 TX CODEBOOK SUB-SAMPLING FOR CSI FEEDBACK

This invention is codebook sub-sampling of the reporting of RI, CQI, W1 and W2. If CSI mode 1 is selected RI and W1 are jointly encoded using codebook sub-sampling in report 1. If CSI mode 2 is selected W1 and W2 are jointly encoded using codebook sub-sampling in report 2. 1. (canceled)2. The method of claim 3 , wherein:sub-sampling of the first precoding matrix (W1) skips W1 matrices with overlapping beams.15. A method claim 3 , comprising: a first mode with a first report jointly coding Rank Indicator (RI) and a first precoding matrix (W1), and with a second report coding Channel Quality Indicator (CQI) and a second precoding matrix (W2), and', 'a second mode with a first report coding Rank Indicator (RI), and with a second report coding Channel Quality Indicator (CQI) and jointly coding the first precoding matrix (W1) and the second precoding matrix (W2);, 'transmitting via a Physical Uplink Control CHannel (PUCCH) a CSI feedback signal havingwherein said jointly coding Rank Indicator (RI) and the first precoding matrix (W1) employs codebook sub-sampling;wherein said jointly coding the first precoding matrix (W1) and the second precoding matrix (W2) employs codebook sub-sampling; and for rank equal one joint coding the first precoding matrix (W1) and the second precoding matrix (W2) employs 7 bits or less, and', 'for rank greater than one joint coding the first precoding matrix (W1) and the second precoding matrix (W2) employs 4 bits or less., 'wherein said jointly coding the first precoding matrix (W1) and the second precoding matrix (W2) employs codebook sub-sampling20. (canceled) This application claims priority under 35 U.S.C. 119(e)(1) to U.S. Provisional Application No. 61/379,525 filed Sep. 2, 2010, U.S. Provisional Application No. 61/384,925 filed Sep. 21, 2010 and U.S. Provisional Application No. 61/385,671 filed Sep. 23, 2010.The technical field of this invention is wireless communication such as wireless telephony.This invention deals with the problem ...

DOWNLINK 8 TX CODEBOOK SUB-SAMPLING FOR CSI FEEDBACK

This invention is codebook sub-sampling of the reporting of RI, CQI, W1 and W2. If CSI mode 1 is selected RI and W1 are jointly encoded using codebook sub-sampling in report 1. If CSI mode 2 is selected W1 and W2 are jointly encoded using codebook sub-sampling in report 2. 1. (canceled)2. The method of claim 3 , wherein:sub-sampling of the first precoding matrix (W1) skips W1 matrices with overlapping beams.15. An apparatus claim 3 , comprising: a first mode with a first report jointly coding Rank Indicator (RI) and a first precoding matrix (W1), and with a second report coding Channel Quality Indicator (CQI) and a second precoding matrix (W2), and', 'a second mode with a first report coding Rank Indicator (RI), and with a second report coding Channel Quality Indicator (CQI) and jointly coding the first precoding, matrix (W1) and the second precoding matrix (W2);, 'circuitry for transmitting via a Physical Uplink Control CHannel (PUCCH) a CSI feedback signal havingwherein said jointly coding Rank Indicator (RI) and the first precoding matrix (W1) employs codebook sub-sampling;wherein said jointly coding the first precoding matrix (W1) and the second precoding matrix (W2) employs codebook sub-sampling; and for rank equal one joint coding the first precoding matrix (W1) and the second preceding matrix (W2) employs 7 bits or less, and', 'for rank greater than one joint coding the first preceding matrix (W1) and the second preceding matrix (W2) employs 4 bits or less., 'wherein said jointly coding the first precoding matrix (W1) and the second precoding matrix (W2) employs codebook sub-sampling20. (canceled) This application claims priority under 35 U.S.C. 119(e)(1) to U.S. Provisional Application No. 61/379,525 filed Sep. 2, 2010, U.S. Provisional Application No. 61/384,925 filed Sep. 21, 2010 and U.S. Provisional Application No. 61/385,671 filed Sep. 23, 2010.The technical field of this invention is wireless communication such as wireless telephony.This invention ...

CQI FEEDBACK STRUCTURE

Embodiments of the present disclosure provide a reporting allocation unit, an indicator interpretation unit and methods of operating a reporting allocation unit and an indicator interpretation unit. In one embodiment, the reporting allocation unit includes an indicator configuration module configured to provide reporting interval and offset values of corresponding rank and channel quality indicators for user equipment. The reporting allocation unit also includes a sending module configured to transmit the reporting interval and offset values to the user equipment. 1. A reporting allocation unit , comprising:an indicator configuration module configured to provide reporting interval and offset values of corresponding rank and channel quality indicators for user equipment; anda sending module configured to transmit the reporting interval and offset values to the user equipment.2. The reporting allocation unit as recited in wherein the reporting interval and offset values of the corresponding rank and channel quality indicators are selected independently.3. The reporting allocation unit as recited in wherein the reporting interval and offset values for the rank indicator are limited by a maximum reporting interval of the rank indicator.46-. (canceled)7. A method of operating a reporting allocation unit claim 1 , comprising:providing reporting interval and offset values of corresponding rank and channel quality indicators for user equipment; andtransmitting the reporting interval and offset values to the user equipment.8. The method as recited in wherein the reporting interval and offset values of the corresponding rank and channel quality indicators are selected independently.9. The method as recited in wherein the reporting interval and offset values for the rank indicator are limited by a maximum reporting interval of the rank indicator.1012-. (canceled)13. An indicator interpretation unit claim 7 , comprising:a receive module configured to receive reporting interval ...

PRE-CODER SELECTION BASED ON RESOURCE BLOCK GROUPING

The present invention provides a receiver. In one embodiment, the receiver includes a receive portion employing transmission signals from a transmitter having multiple antennas and capable of providing channel estimates. The receiver also includes a feedback generator portion configured to provide to the transmitter a pre-coder selection for data transmission that is based on the channel estimates, wherein the pre-coder selection corresponds to a grouping of frequency-domain resource blocks. The present invention also provides a transmitter having multiple antennas. In one embodiment, the transmitter includes a transmit portion coupled to the multiple antennas and capable of applying pre-coding to a data transmission for a receiver. The transmitter also includes a feedback decoding portion configured to decode a pre-coder selection for the data transmission that is fed back from the receiver, wherein the pre-coder selection corresponds to a grouping of frequency-domain resource blocks. 1. A receiver , comprising:a receive portion employing transmission signals from a transmitter having multiple antennas and capable of providing channel estimates; anda feedback generator portion configured to provide a pre-coder selection for data transmission to the transmitter that is based on the channel estimates; wherein the pre-coder selection corresponds to a grouping of frequency-domain resource blocks.2. The receiver as recited in wherein the pre-coder selection provides a single pre-coder for each group of contiguous resource blocks.3. The receiver as recited in wherein a number of contiguous resource blocks corresponding to each group is varied and configured by the transmitter employing signaling to the receiver via a broadcast or a common control channel.4. The receiver as recited in wherein a number of contiguous resource blocks corresponding to each group is varied and configured by a network employing signaling to the receiver via a higher layer signaling.5. The ...

MULTIPLE CQI FEEDBACK FOR CELLULAR NETWORKS

Single user and multiuser MIMO transmission in a cellular network may be performed by a base station (eNB) transmitting either one or two transmission layers. A user equipment (UE) receives a reference symbol from the base station. The UE processes the reference symbol with one or more of a plurality of preceding matrices to form a plurality of channel quality indices (CQI). The UE provides feedback to the eNB comprising one or more feedback CQI selected from the plurality of CQI and one or more preceding matrix indicators (PMI) identifying the one or more preceding matrices used to form each of the one or more feedback CQIs, wherein at least two PMI are included in the feedback. 1. A method of operating a user equipment device in a cellular network , the method comprising:receiving a first reference symbol at the user equipment (UE) from a first base station (eNB);processing by the UE the first reference symbol with one or more of a plurality of precoding matrices to form a plurality of channel quality indices (CQI); andproviding feedback from the UE to the eNB comprising one or more feedback CQI selected from the plurality of CQI and one or more precoding matrix indicators (PMI) identifying the one or more precoding matrices used to form each of the one or more feedback CQIs, wherein at least two PMI are included in the feedback.2. The method of claim 1 , wherein the plurality of CQI is representative of all precoding matrices assigned to the UE claim 1 , and wherein the entire plurality of CQI and respective precoding matrix indicators are provided as feedback.37-. (canceled)8. The method of claim 1 , further comprising receiving a second reference symbol from a second eNB coincidentally with receiving the first reference symbol (RS);wherein the processing comprises forming one or more CQI for each of the first RS and the second RS using one or more of a portion of the plurality of precoding matrices; andwherein feedback comprise one or more feedback CQI and PMI ...

CHANNEL QUALITY REPORT PROCESSES, CIRCUITS AND SYSTEMS

Coordinated multi-point (CoMP) transmissions in a cellular network is performed using multi-broadcast single frequency network (MBSFN) subframes. During CoMP transmission, demodulation reference signals (DRS) are placed in the one portion the MDSFN subframe, while cell-specific reference signals (CRS) are placed in a separate portion of the MDSFN subframe. Therefore, no CRS-DRS collision will occur during CoMP transmission. 1. A method for transmitting coordinated multi-point transmissions in a cellular network , the method comprising:receiving at a user equipment (UE) a plurality of signals transmitted simultaneously from a respective plurality of base stations (NB) of the cellular network, wherein each of the received plurality of signals are received on a same set of frequency resources; anddecoding the plurality of signals as a single signal by the UE, wherein the decoding produces a stream of multi-broadcast single frequency network (MBSFN) subframes.2. The method of claim 1 , wherein at least a portion of MBSFN subframes has a control region for containing a cell specific reference symbol (CRS) and a separate data region for containing one or more demodulation reference symbols (DRS).3. A method for transmitting coordinated multi-point transmissions in a cellular network claim 1 , the method comprising:coordinating between a first base station (NB) and at least one other NB to perform coordinated multi-point (CoMP) transmission to a user equipment (UE);configuring a same time and frequency resource for forming demodulation reference signals (DRS) to be used at the first NB and the one or more other NB during the CoMP transmission to the UE; andperforming a CoMP transmission to the UE from the first NB and the one or more other NB using a multi-broadcast single frequency network (MBSFN) subframe.4. The method of claim 3 , wherein at least a portion of MBSFN subframes in a CoMP transmission to the UE from the NB and the one or more other NB has a control region ...

MIMO PGRC SYSTEM AND METHOD

A method of transmitting a wireless signal (FIGS. A-C) is disclosed. A data stream is divided () into a first data stream and a second data stream. The first data stream is encoded () at a first data rate. The second data stream is encoded () at a second data rate different from the first data rate. A first part of the encoded first data stream is transmitted from a first transmit antenna (). A second part of the encoded first data stream is transmitted from a second transmit antenna (). 136-. (canceled)37. A method of transmitting a wireless signal from a wireless transmitter , comprising the steps of:receiving two data streams;encoding the first data stream in response to a first channel quality indication;encoding the second data stream separately from the first data stream in response to a second channel quality indication;converting a first part of the encoded first data stream to a first symbol;converting a second part of the encoded first data stream to a second symbol;multiplying the encoded first and second symbols by a linear basis matrix to produce first and second product symbols; andtransmitting the product symbols from at least two transmit antennas of the wireless transmitter.38. The method of claim 37 , comprising the steps of:converting a first part of the encoded second data stream to a third symbol;converting a second part of the encoded second data stream to a fourth symbol;multiplying the encoded third and fourth symbols by the linear basis matrix to produce third and fourth product symbols; andtransmitting the third and fourth product symbols from the at least two transmit antennas.39. The method of claim 37 , wherein the linear basis matrix is unitary.40. The method of claim 37 , wherein the linear basis matrix is non-unitary.41. The method of claim 37 , wherein at least one of the encoded first and second data steams comprise orthogonal frequency division multiplex (OFDM) symbols.42. The method of claim 37 , wherein the data stream comprises ...

PSEUDORANDOM SEQUENCE GENERATION FOR OFDM CELLULAR SYSTEMS

In one embodiment, a transmitter includes a binary sequence generator unit configured to provide a sequence of reference signal bits, wherein the sequence is an inseparable function of a cell identification parameter, a cyclic prefix mode corresponding to the transmitter and one or more time indices of the sequence. The transmitter also include a mapping unit that transforms the sequence of reference signal bits into a complex reference signal, and a transmit unit configured to transmit the complex reference signal. In another embodiment, a receiver includes a receive unit configured to receive a complex reference signal and a reference signal decoder unit configured to detect a sequence of reference signal bits from the complex reference signal, wherein the sequence is an inseparable function of a cell identification parameter, a cyclic prefix mode corresponding to a transmitter and one or more time indices of the sequence. 118-. (canceled)19. A receiver , comprising:a receive unit configured to receive a complex reference signal; anda reference signal decoder unit configured to detect a sequence of reference signal bits from the complex reference signal, wherein the sequence is an inseparable function of a cell identification parameter, a cyclic prefix mode corresponding to a transmitter and one or more time indices of the sequence.20. The receiver as recited in wherein the sequence of reference signal bits is generated by a linear feedback shift register capable of employing an initial seed claim 19 , an update equation and a fast forward parameter.21. The receiver as recited in wherein the fast forward parameter of the linear feedback shift register is a function of the cell identification parameter and one or more of the time indices.22. The receiver as recited in wherein the initial seed of the linear feedback shift register is a nonlinear function of the cell identification parameter claim 20 , the cyclic prefix mode and the time indices.23. The receiver as ...

MULTI-RANK PRECODING MATRIX INDICATOR (PMI) FEEDBACK IN A MULTIPLE-INPUT MULTIPLE-OUTPUT (MIMO) SYSTEM

In at least some embodiments, a system includes a multiple-input multiple-output (MIMO) base station and a plurality of MIMO user equipment (UE) devices in communication with the MIMO base station. The MIMO base station is configured to switch between a single-user (SU)-MIMO mode and a multiple-user (MU)-MIMO mode during communications with the plurality of MIMO UE devices based on multi-rank precoding matrix indicator (PMI) feedback received from at least one of the MIMO UE devices. 1. A system comprising:a multiple-input multiple-output (MIMO) base station for use with a plurality of MIMO user equipment (UE) devices in communication with the MIMO base station;wherein the MIMO base station includes single-user/multiple-user switching logic configured to switch between a single-user (SU)-MIMO mode and a multiple-user (MU)-MIMO mode during communications with the plurality of MIMO UE devices based on multi-rank precoding matrix indicator (PMI) feedback received from at least one of the MIMO UE devices;wherein the multi-rank PMI feedback comprises:a first PMI corresponding to a recommended precoding matrix for SU-MIMO communications between the MIMO base station and the plurality of MIMO UE devices, and a rank indicator (RI) corresponding to the rank value of the first PMI, anda second PMI corresponding to a precoding matrix of a pre-defined restricted rank value applicable for MU-MIMO communications between the base station and the plurality of MIMO UE devices.2. The system of wherein the MIMO base station sends configuration information to at least one MIMO UE device that indicate that the MIMO UE device should report said first and second PMIs periodically claim 1 , wherein the reporting periodicity of said second PMI is equal to the reporting periodicity of said first PMI.3. The system of wherein the MIMO base station sends configuration information to at least one MIMO UE device that indicate that the MIMO UE device should report said first and second PMIs ...

PHYSICAL DOWNLINK CONTROL CHANNEL AND PHYSICAL HYBRID AUTOMATIC REPEAT REQUEST INDICATOR CHANNEL ENHANCEMENTS

A wireless transmission system included at least one user equipment and a base station. The base station is operable to form a downlink control information block, modulate the downlink control information, precode the modulated downlink control information, and transmit the precoded, modulated downlink control information on at least one demodulation reference signal antenna port to the at least one user equipment. The precoded, modulated downlink control information is mapped to a set of N1 physical resource block pairs in a subframe from an orthogonal frequency division multiplexing symbol T1 to and orthogonal frequency division multiplexing symbol T2. 160-. (canceled)61. A method of operating a user equipment (UE) , comprising:configuring the user equipment (UE) to receive a physical downlink control channel with Demodulation Reference Signal (DMRS)-based precoding (D-PDCCH), wherein the D-PDCCH is scrambled with a scrambling sequence ID (SCID) of 0 or 1.62. The method of wherein the user equipment (UE) is configured to decode the D-PDCCH on antenna port 8 with a SCID of 0.63. The method of wherein the user equipment (UE) is configured to decode a downlink grant in D-PDCCH on a first antenna port claim 62 , and decode an uplink grant on a second antenna port.64. The method of wherein the first antenna port is antenna port 7 and the second antenna port is antenna port 8.65. The method of claim 64 , wherein the user equipment (UE)-specific antenna port and SCID for D-PDCCH are dynamically signaled by a D-PDCCH-configuration-grant.66. The method of claim 65 , wherein the D-PDCCH-configuration-grant dynamically signals the antenna port and SCID of the corresponding D-PDCCH.67. The method of claim 66 , wherein the user equipment (UE) first decodes the D-PDCCH-configuration-grant to obtain the antenna Port (AP) and SCID information claim 66 , then proceeds to decode D-PDCCH.68. The method of claim 66 , wherein the user equipment (UE) is configured by higher layer ...

Network Signaling for Network-Assisted Interference Cancellation and Suppression

Embodiments of the invention are directed to a cellular communication network that can determine whether communications between one base station-UE pair may interfere with another UE that is in the same cell or a different cell. The network identifies interference parameters associated with interference signals that may be received by a UE. The interference signals may be generated by the base station itself, such as communications with other UEs, or by a neighboring base station. The base station transmits the interference parameters to the UE. The UE receives the one or more parameters comprising information about signals expected to cause intra-cell or inter-cell interference. The UE then processes received signals using the one or more parameters to suppress the intra-cell or inter-cell interference. 1. A method , comprising:receiving, at a user equipment (UE), one or more parameters comprising information about signals expected to cause intra-cell or inter-cell interference at the UE; andprocessing received signals at the UE using the one or more parameters to suppress the intra-cell or inter-cell interference.2. The method of claim 1 , wherein the one or more parameters identify a number of interference signals that may affect the UE.3. The method of claim 1 , further comprising:receiving, at the UE, a bitmap indicating whether each of a plurality of interference sources are present.4. The method of claim 1 , further comprising:receiving, at the UE, a first set of parameters signaled on a wideband basis, the first set of parameters applicable to all physical resource blocks (PRBs) in assigned frequency resources; andreceiving a second set of parameters signaled on a narrow-band basis, the second set of parameters applicable to each PRB pair or each Precoding Resource Block Group (PRG) in an assigned frequency resource of the UE.5. The method of claim 1 , wherein the one or more parameters are semi-statically configured by Radio Resource Control (RRC)-signaling ...

Backward compatible bandwidth extension

A transmitter includes a bandwidth configuration unit configured to provide an increased system bandwidth corresponding to a bandwidth extension over multiple component carriers Additionally, the transmitter also includes a transmit unit configured to employ the bandwidth extension.

RANK AND PMI IN DOWNLOAD CONTROL SIGNALING FOR UPLINK SINGLE-USER MIMO (UL SU-MIMO)

A method of operating a user equipment device includes extracting at least one rank indicator (RI) from an uplink grant, and adapting a transmission rank in response to said RI. At least two transmit antennas are configured to transmit according to said transmission rank. 21. A user equipment device , comprising:circuitry for extracting at least one indication of rank from an uplink grant;circuitry for adapting a transmission rank in response to said indication of rank;circuitry for configuring at least two transmit antennas to transmit according to said transmission rank; andcircuitry for extracting at least two pre-coding matrix indicators (PMI) from said uplink grant, wherein a first PMI is associated with a set of P sub-bands allocated by said grant, and a second PMI is associated with at least one sub-band of said set of P allocated sub-bands.22. The device of claim 21 , further comprising circuitry for extracting at least one pre-coding matrix indicator (PMI) from said uplink grant.23. The device of claim 22 , wherein said indication of rank is jointly coded with said PMI.24. The device of claim 22 , wherein said at least one PMI is a single wideband PMI.25. The device of claim 21 , wherein said second PMI is associated with a selected subset of said set of P allocated sub-bands.26. The device of claim 25 , wherein said selected subset has a higher signal-to-interference plus noise ratio than a remaining subset of said sub-bands.27. The device of claim 25 , wherein said uplink grant includes a position indicator representing a position of said selected subset within said set of P allocated sub-bands.28. The device of claim 21 , wherein said second PMI is encoded differentially with respect to said first PMI.29. The device of claim 28 , wherein said second PMI is encoded using fewer bits than said first PMI.30. A base station having at least two receive antennas claim 28 , comprising:circuitry for receiving a reference signal;circuitry for generating at least ...

DOWNLINK 8 Tx CODEBOOK SUB-SAMPLING FOR CSI FEEDBACK

This invention is codebook sub-sampling of the reporting of RI, CQI, W and W If CSI mode 1 is selected RI and W are jointly encoded using codebook sub-sampling in report 1. If CSI mode 2 is selected W and W are jointly encoded using codebook sub-sampling in report 2. 125-. (canceled)29. A transceiver , comprising: a first mode with a first report jointly coding Rank Indicator (RI) and a first Precoding Matrix Indicator (PMI), and with a second report coding Channel Quality Indicator (COD and a second PMI, wherein said jointly coding the RI and the first PMI employs codebook sub-sampling; and', 'a second mode with a first report coding RI, and with a second report coding CQI and jointly coding the first PMI and the second PMI, wherein said jointly coding the first PMI and the second PMI employs codebook sub-sampling:', 'for RI equal one joint coding the first PMI and the second PMI employs 7 bits or less, and', 'for RI greater than one joint coding the first PMI and the second PMI employs 4 bits or less., 'a transmitter for transmitting via a Physical Uplink Control CHannel (PUCCH) a Channel State Information feedback signal having This application claims priority under 35 U.S.C. 119(e)(1) to U.S. Provisional Application No. 61/379,525 filed Sep. 2, 2010, U.S. Provisional Application No. 61/384,925 filed Sep. 21, 2010 and U.S. Provisional Application No. 61/385,671 filed Sep. 23, 2010.The technical field of this invention is wireless communication such as wireless telephony.This invention deals with the problem of signaling channel state information (CSI) between a user equipment (UE) and a base station (eNB).This invention is codebook sub-sampling of the reporting of Rank Indicator (RI), Channel Quality Indicator (CQI), first precoding matrix (W) and second precoding matrix (W). If CSI mode 1 is selected RI and W are jointly encoded using codebook sub-sampling in report 1. If CSI mode 2 is selected W and W are jointly encoded using codebook sub-sampling in report 2. ...

Transmissionn modes and signaling for uplink mimo support or single tb dual-layer transmission in lte uplink

An apparatus for mapping data in a wireless communication system. The apparatus includes circuitry for generating a precoding matrix for multi-antenna transmission based on a precoding matrix indicator (PMI) feedback from at least one remote receiver where the PMI indicates a choice of precoding matrix derived from a matrix multiplication of two matrices from a first code book and a second codebook. The apparatus further includes circuitry for precoding one or more layers of a data stream with the precoding matrix and transmitting the precoded layers of data stream to the remove receiver.

METHOD AND APPARATUS FOR CHANNEL STATE INFORMATION FEEDBACK IN A COORDINATED MULTI-POINT COMMUNICATION SYSTEM

A method of operating a wireless communication system (FIG. ) is disclosed. The method includes receiving a plurality of reference signals from a respective plurality of transceivers (). Each of the plurality of reference signals is measured to produce a respective plurality of channel state information (CSI) measurements (). An aggregated channel quality indicator (CQI) is calculated from measuring the plurality of reference signals (). The aggregated CQI is transmitted to at least one transceiver of the respective plurality of transceivers (). 127-. (canceled)28. A method of operating a user equipment (UE) , comprising the steps of:receiving a plurality of reference signals from a respective plurality of base stations;measuring each of the plurality of reference signals to generate a respective plurality of per-point channel state information (CSI); andtransmitting the plurality of per-point CSI to at least one of the plurality of base stations.28. The method of claim 28 , wherein the at least one of the plurality of base stations is a subset of the plurality of base stations.29. The method of claim 28 , wherein the at least one of the plurality of base stations is all of the respective plurality of base stations.31. The method of claim 28 , wherein the per-point CSI comprises a per-point precoding matrix indicator (PMI).32. The method of claim 31 , wherein the per-point CSI comprises a per-point channel quality indicator (CQI) claim 31 , and wherein the per-point CQI is derived under a hypothesis of single-point multiple-input multiple-output (MIMO) beamforming on a transceiver of the respective plurality of base stations using a precoding matrix indicated by the respective per-point PMI.33. The method of claim 31 , wherein the per-point CSI comprises a per-point co-phasing factor.34. The method of claim 28 , wherein an effective aggregated channel of the respective plurality of base stations is derived under a hypothesis of the respective plurality of base ...

USER EQUIPMENT (UE) A APPARATUS FOR CHANNEL STATE INFORMATION FEEDBACK IN A COORDINATED MULTI-POINT COMMUNICATION SYSTEM

A method of operating a wireless communication system (FIG. ) is disclosed. The method includes receiving a plurality of reference signals from a respective plurality of transceivers (). Each of the plurality of reference signals is measured to produce a respective plurality of channel state information (CSI) measurements (). An aggregated channel quality indicator (CQI) is calculated from measuring the plurality of reference signals (). The aggregated CQI is transmitted to at least one transceiver of the respective plurality of transceivers (). 127-. (canceled)28. A user equipment (UE) comprising:circuitry for receiving a plurality of reference signals from a respective plurality of base stations;circuitry for measuring the plurality of reference signals to generate an aggregated channel quality indicator (CQI) for a subset of the plurality of reference signals, wherein the aggregated CQI reflects a link quality associated with an effective aggregated channel of a subset of the respective plurality of base stations;circuitry for measuring each of the plurality of reference signals to generate a respective plurality of per-point channel state information (CSI);circuitry for transmitting the aggregated CQI and at least one of the per-point CSI to at least one of the respective plurality of base stations.29. A user equipment (UE) as in claim 28 , wherein the per-point CSI comprises a per-point precoding matrix indicator (PMI).30. A user equipment (UE) as in claim 29 , wherein the per-point CSI comprises a per-point channel quality indicator (CQI) claim 29 , and wherein the per-point CQI is derived under a hypothesis of single-point multiple-input multiple-output (MIMO) beamforming on a base station of the respective plurality of base stations using a precoding matrix indicted by the respective per-point PMI.31. A user equipment (UE) as in claim 29 , wherein the aggregated CQI is derived under a hypothesis of joint transmission from the respective plurality of base ...

Network signaling for network-assisted interference cancellation and suppression

Embodiments of the invention are directed to a cellular communication network that can determine whether communications between one base station-UE pair may interfere with another UE that is in the same cell or a different cell. The network identifies interference parameters associated with interference signals that may be received by a UE. The interference signals may be generated by the base station itself, such as communications with other UEs, or by a neighboring base station. The base station transmits the interference parameters to the UE. The UE receives the one or more parameters comprising information about signals expected to cause intra-cell or inter-cell interference. The UE then processes received signals using the one or more parameters to suppress the intra-cell or inter-cell interference.

PRE-CODER SELECTION BASED ON RESOURCE BLOCK GROUPING

The present invention provides a receiver. In one embodiment, the receiver includes a receive portion employing transmission signals from a transmitter having multiple antennas and capable of providing channel estimates. The receiver also includes a feedback generator portion configured to provide to the transmitter a pre-coder selection for data transmission that is based on the channel estimates, wherein the pre-coder selection corresponds to a grouping of frequency-domain resource blocks. The present invention also provides a transmitter having multiple antennas. In one embodiment, the transmitter includes a transmit portion coupled to the multiple antennas and capable of applying pre-coding to a data transmission for a receiver. The transmitter also includes a feedback decoding portion configured to decode a pre-coder selection for the data transmission that is fed back from the receiver, wherein the pre-coder selection corresponds to a grouping of frequency-domain resource blocks. 1. A receiver , comprising:a receive portion employing transmission signals from a transmitter having multiple antennas and capable of providing channel estimates; anda feedback generator portion configured to provide a pre-coder selection for data transmission to the transmitter that is based on the channel estimates; wherein the pre-coder selection corresponds to a grouping of frequency-domain resource blocks.2. The receiver as recited in wherein the pre-coder selection provides a single pre-coder for each group of contiguous resource blocks.3. The receiver as recited in wherein a number of contiguous resource blocks corresponding to each group is varied and configured by the transmitter employing signaling to the receiver via a broadcast or a common control channel.4. The receiver as recited in wherein a number of contiguous resource blocks corresponding to each group is varied and configured by a network employing signaling to the receiver via a higher layer signaling.5. The ...

METHOD FOR TRANSMISSION OF UNICAST CONTROL IN BROADCAST/MULTICAST TRANSMISSION TIME INTERVALS

Embodiments of the invention provide methods for maximizing the bandwidth utilization in the uplink of a communication system supporting time division multiplexing between unicast and multicast/broadcast communication modes during transmission time intervals in the downlink of a communication system. This is accomplished by multiplexing at least unicast control signaling for UL scheduling assignments in TTIs supporting the multicast/broadcast communication mode. Moreover, multiplexing of unicast control signaling can also be accomplished by splitting a symbol of the multicast/broadcast TTI into two shorter symbols with the first of these two shorter symbols carrying at least unicast control signaling and the second of these shorter symbols carrying multicast/broadcast signaling. 3239-. (canceled)40. A method for a base station to schedule a data transmission from a User Equipment (UE) wherein said scheduling occurs in a broadcast/multicast Transmission Time Interval (TTI) , said method comprising:partitioning the multicast/broadcast TTI in two consecutive sets of symbols with the first set of symbols is placed prior to the second set of symbols;transmitting, from said base station, unicast signaling in said first set of symbols of said multicast/broadcast TTI, said unicast signaling comprising only unicast control signaling and unicast pilot signaling;transmitting, from said base station, multicast/broadcast signaling in said second set of symbols of said multicast/broadcast TTI, said multicast/broadcast signaling comprising only multicast/broadcast data signaling and multicast/broadcast pilot signaling;transmitting, from said base station, unicast data signaling in a TTI in response to the reception of said unicast control signaling in said broadcast/multicast TTI, wherein said unicast control signaling is transmitted with priority to multicast/broadcast signaling at the beginning of said multicast/broadcast TTI.41. The method of claim 40 , wherein said unicast ...

Pre-coder selection based on resource block grouping

The present invention provides a receiver. In one embodiment, the receiver includes a receive portion employing transmission signals from a transmitter having multiple antennas and capable of providing channel estimates. The receiver also includes a feedback generator portion configured to provide to the transmitter a pre-coder selection for data transmission that is based on the channel estimates, wherein the pre-coder selection corresponds to a grouping of frequency-domain resource blocks. The present invention also provides a transmitter having multiple antennas. In one embodiment, the transmitter includes a transmit portion coupled to the multiple antennas and capable of applying pre-coding to a data transmission for a receiver. The transmitter also includes a feedback decoding portion configured to decode a pre-coder selection for the data transmission that is fed back from the receiver, wherein the pre-coder selection corresponds to a grouping of frequency-domain resource blocks.

MIMO hybrid-ARQ using basis hopping

A Hybrid Automatic Retransmission Request (H-ARQ) technique is provided for Multi-Input Multi-Output (MIMO) systems. The technique changes the basis (V) upon retransmission, which helps reduce the error probability upon retransmission. This basis hopping technique provides for improved performance gain without significant increase in design complexity. In one embodiment, communication device ( 100 ) includes a receiver section ( 114 ) for receiving an acknowledgment (ACK) or a non-acknowledgment (NACK) signal in response to information transmitted by the transmitter section of the communication device. If a NACK is received, a new basis is selected from a set of basis stored in a basis set unit ( 110 ). The new basis that is selected is then used by a linear transformation unit ( 106 ) in the retransmission of the information.

Reference Signal Resource Allocation for Single User MIMO

Transmission with multiple antennas in a wireless network is performed by transmitting a plurality of reference sequences (RS) from a UE. A first RS s1[k] is produced using a first cyclic shift and a base sequence s0[k], wherein k={1, 2 . . . K} is an element index. A second RS s2[k] is produced using a second cyclic shift and s0[k]. A first symbol sequence x1[k] is produced using at least s1[k] and s2[k], for at least one k. A second symbol sequence x2[k] is produced using at least s1[k] and s2[k], for at least one k. x1[k] is transmitted using a first transmit antenna and x2[k] is transmitted using a second transmit antenna.

Wireless system with hybrid automatic retransmission request in interference-limited communications

A wireless receiver for receiving signals from an interference-limited transmitter in an interference-limited system comprising at least one transmit antenna, wherein the signals comprise a plurality of symbols. The receiver comprises a plurality of receive antennas and collection circuitry for collecting a plurality of signal samples with at least one symbol and interference effects. The receiver also comprises suppression circuitry, accumulation circuitry, circuitry for providing estimates of a group of bits, error detection circuitry and circuitry for requesting the transmitter to transmit a retransmission of a packet in response to detecting an error.

Configuration of Rank Indicator Reporting Instances

A method for setting a periodicity and an offset in rank indicator (RI) reporting in a user equipment in a wireless communication system receives a radio resource control (RRC) signal from a base station, decodes a RI periodicity and offset configuration index, sets the periodicity and offset in accordance with said decoded periodicity and offset configuration index and reports a RI according to the set periodicity and offset. The periodicity is an integer and reporting a RI reports with equal the product of the periodicity and a period of reporting of the channel quality indicator (CQI) and the preceding matrix indicator (PMI).

Interleaver for transmit diversity

The present invention exploits the benefits obtainable from using transmit diversity by designing the size of the interleaver matrix to avoid the case where most or all of the bits in a row are transmitted on a single antenna ( 110 or 112 ). This can be accomplished, for example, by specifying the interleaver matrix based on the type of modulation ( 308 ) used. A symbol scrambler can also be used to exploit the benefits obtainable from using transmit diversity.

Channel quality report processes, circuits and systems

An electronic device includes a first circuit (111) operable to generate at least a first and a second channel quality indicator (CQI) vector associated with a plurality of subbands for each of at least first and second spatial codewords respectively and generate a first and a second reference CQI for the first and second spatial codewords, and operable to generate a first and a second differential subbands CQI vector for each spatial codeword and generate a differential between the second reference CQI and the first reference CQI, and further operable to form a CQI report derived from the first and the second differential subbands CQI vector for each spatial codeword as well as the differential between the second reference CQI and the first reference CQI; and a second circuit (113) operable to initiate transmission of a signal communicating the CQI report. Other electronic devices, processes and systems are also disclosed.

Channel quality report processes, circuits and systems

An electronic device includes a first circuit ( 111 ) operable to generate at least a first and a second channel quality indicator (CQI) vector associated with a plurality of subbands for each of at least first and second spatial codewords respectively and generate a first and a second reference CQI for the first and second spatial codewords, and operable to generate a first and a second differential subbands CQI vector for each spatial codeword and generate a differential between the second reference CQI and the first reference CQI, and further operable to form a CQI report derived from the first and the second differential subbands CQI vector for each spatial codeword as well as the differential between the second reference CQI and the first reference CQI; and a second circuit ( 113 ) operable to initiate transmission of a signal communicating the CQI report. Other electronic devices, processes and systems are also disclosed.

Codebook sub-sampling for csi feedback on pucch for 4tx mimo

Channel state information (CSI) feedback in a wireless communication system (100) is disclosed. User equipment transmits a CSI feedback signal via a Physical Uplink Control CHannel (PUCCH). If the UE is configured in a first feedback mode, the CSI comprises a first report jointly coding a Rank Indicator (RI) and a first precoding matrix indicator (PMI1) (203), and a second report coding Channel Quality Indicator (CQI) and a second precoding matrix indicator (PMI2)(204). If the UE is configured in a second feedback mode, the CSI comprises a first report coding RI (205), and a second report coding CQI, PMI1 and PMI2 (206). The jointly coded RI and PMI1 employs codebook sub-sampling, and the jointly coding PMI1, PMI2 and CQI employs codebook sub-sampling.

Reference signal resource allocation for single user MIMO

Transmission with multiple antennas in a wireless network is performed by transmitting a plurality of reference sequences (RS) from a UE. A first RS s1[k] is produced using a first cyclic shift and a base sequence s0[k], wherein k={1, 2 . . . K} is an element index. A second RS s2[k] is produced using a second cyclic shift and s0[k]. A first symbol sequence x1[k] is produced using at least s1[k] and s2[k], for at least one k. A second symbol sequence x2[k] is produced using at least s1[k] and s2[k], for at least one k. x1[k] is transmitted using a first transmit antenna and x2[k] is transmitted using a second transmit antenna.

Secondary synchronization channel design for ofdma systems

Embodiments of the disclosure provide a transmitter (105), a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter for use in a base station of an OFDMA system and includes a primary module (106) configured to provide a primary synchronization signal that furnishes a partial cell identity. Additionally, the transmitter also includes a secondary module (107) configured to provide a secondary synchronization signal that furnishes a cell identity group and one or more cell-specific parameters based on using a two-segment secondary synchronization sequence. The transmitter further includes a transmit module (108) configured to transmit the primary and secondary synchronization signals.

Differential CQI for OFDMA systems

Embodiments of the present disclosure provide a feedback generator, a feedback decoder and methods of operating a feedback generator and decoder. In one embodiment, the feedback generator is for use in user equipment and includes a CQI profile module configured to provide a differential channel quality indicator, wherein the differential channel quality indicator represents a difference between indices corresponding to allocatable channel quality indicators. The feedback generator also includes a transmit module that transmits the differential channel quality indicator. In one embodiment, the feedback decoder is for use in a base station and includes a receive module configured to receive a differential channel quality indicator. The feedback decoder also includes a CQI selection module configured to provide allocatable channel quality indicators from the differential channel quality indicator based on a differential index, wherein the differential index represents a difference between indices corresponding to the allocatable channel quality indicators.

Multiuser detection for wireless communications systems in the presence of Interference

System and method for detecting transmissions from multiple users in a digital wireless communications system in the presence of interference. A preferred embodiment comprises derotating a received signal (510) by a specified amount, determining channel estimates (515), which can include the determination of the number of users (interferers plus a desired user), and extracting information (520) transmitted by the desired user from the received signal. Successive and parallel multiuser detection schemes are provided for extracting the information from the received signal.

Transmission Modes and Signaling for Uplink MIMO Support or Single TB Dual-Layer Transmission in LTE Uplink

This invention is a method of wireless telephony. A bases station configures a user equipment for single-antenna port or multi-antenna port operation via Radio Resource Control (RRC) signaling including a 5-bit MCS-RV and 1-bit NDI for the second codeword (CW1) are needed for the DCI format 4.

Slow uplink power control

Embodiments of the invention provide embodiments of the invention provide and method, network entity and user equipment for slow uplink power control of user equipment in a wireless communication system by responding to a long term control metric that is derived from an uplink channel metric over a plurality of transmission instances and a set of performance criteria. A method for slow uplink power control in accordance with and embodiment of the invention measures at least one uplink channel metric for user equipment (310) and then determines an appropriate transmit power for the user equipment by using a control metric derived from the uplink channel metric corresponding to a plurality of transmission instances (330) for the user equipment (340).

CDMA wireless system with closed loop mode using 90 degree phase rotation and beamformer verification

A wireless communication system (10). The system comprises a user station (12). The user station comprises despreading circuitry (22) for receiving and despreading a plurality of slots received from at least a first transmit antenna (A12 1 ) and a second transmit antenna (A12 2 ) at a transmitting station (14). Each of the plurality of slots comprises a first channel (DPCH) comprising a first set of pilot symbols and a second channel (PCCPCH) comprising a second set of pilot symbols. The user station further comprises circuitry (50) for measuring a first channel measurement (α 1, n ) for each given slot in the plurality of slots from the first transmit antenna and in response to the first set of pilot symbols in the given slot. The user station further comprises circuitry (50) for measuring a second channel measurement (α 2, n ) for each given slot in the plurality of slots from the second transmit antenna and in response to the first set of pilot symbols in the given slot. The user station further comprises circuitry (52) for measuring a phase difference value ( 2 ( n )) for each given slot in the plurality of slots in response to the first channel measurement and the second channel measurement for the given slot and in response to a ninety degree rotation of the given slot relative to a slot which was received by the despreading circuitry immediately preceding the given slot.

Mode switching for a downlink coordinated multipoint communication

A mode-switching network transmitter is for use with a network MIMO super cell and includes a super cell control unit configured to orchestrate a transmission from the network MIMO super cell, wherein the transmission is supplied from a portion of super cell transmission points. The mode-switching network transmitter also includes a transmission unit configured to provide the transmission. Additionally, a transmission mode-switching receiver is for use with user equipment in a network MIMO super cell and includes a reception unit configured to receive a transmission for the user equipment within the network MIMO super cell. The transmission mode-switching receiver also includes a processing unit configured to process the transmission, wherein the transmission is supplied from a portion of super cell transmission points.

Methods for energy-efficient unicast and multicast transmission in a wireless communication system

A method for time multiplexing subframes on a serving cell to a user equipment (UE), wherein an eNodeB communicates by bitmap indication using a first bit (bit 'Ο') a set of subframes (501, 502, 503) operating with the legacy Long Term Evolution (LTE) transmission format and using a second bit (bit "1") another set of subframes (504) operating with an evolved transmission New Carrier Type (NCT) format comprising reduced density cell-specific reference signals (CRS) transmission without a Physical Downlink Control Channel (PDCCH) control region.

Channel norm-based ordering and whitened decoding for MIMO communication systems

A channel norm-based ordering and whitened decoding technique (lower complexity iterative decoder) for MIMO communication systems performs approximately the same level of performance as an iterative minimum mean squared error decoder. Decoding a signal vector comprises receiving a signal vector y k , multiplying the received signal vector y k by a conjugate transpose of a channel matrix H*. A column vector z k is generated. The entries of the column vector z k are reordered and an estimated channel matrix {tilde over (H)} is generated. The estimated channel matrix {tilde over (H)} decomposed using a Cholesky decomposition and generating a triangular matrix L. Triangular matrix L is solved backwards and a signal vector {tilde over (s)} k estimated. An estimate of the transmitted symbol vector Ŝ k is generated.

Rate matching to maintain code block resource element boundaries

Embodiments of the present disclosure provide a transmitter (100), a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter is for use with multiple transmit antennas and includes an encoding unit (105) configured to segment input bits into one or more code blocks. The transmitter also includes a rate matching unit (120) configured to generate a stream of transmit bits from the one or more code blocks, wherein a group of transmit bits allocated to one resource element originates from only one of the one or more code blocks. The transmitter further includes a mapping unit (125) configured to provide modulated symbols from the stream of transmit bits on a number of spatial transmission layers for one or more resource elements. The transmitter still further includes a transmit unit (140) configured to transmit the modulated symbols employing the multiple transmit antennas.

Turbo HSDPA system

A method of power saving for a wireless transceiver (FIGS. 1 and 2 ) is disclosed. The transceiver has an active power mode ( 504 ) and a reduced power mode ( 510 ). The transceiver is operated in the reduced power mode ( 510 ) and monitors transmissions from a remote wireless transmitter while in the reduced power mode. The transceiver identifies a transmission from the remote wireless transmitter by a transceiver identity included in the transmission (FIG. 6 , UE identification). The transceiver transitions to the active power mode ( 512 ) in response to identifying the transmission.

Wireless transmitter and receiver

A wireless communication network (10) comprising a wireless transmitter (12). The transmitter comprises a plurality of antennas (AT1 1 , AT1 2 ), wherein each of the plurality of antennas is operable for transmitting signals. The transmitter also comprises, for each of a plurality of different user channels ( D n ), circuitry (22 n ) for providing a plurality of groups of symbols in a first symbol group sequence ( D ⁢ n 1 ). The transmitter also comprises, for each of the plurality of different user channels, circuitry ( 24 ⁢ n 1 ) for forming a first modulated symbol group sequence for the user channel by modulating the symbols in the first symbol group sequence for the user channel with a unique code that corresponds to the user channel and distinguishes the user channel from each other of the plurality of different user channels and circuitry (26 1 ) for combining the first modulated symbol group sequences and providing them for transmission by a first antenna (AT1 1 ). The transmitter also comprises, for each of the plurality of different user channels, circuitry (22 n ) for forming a second symbol group sequence ( D ⁢ n 2 ) by re-ordering the groups of symbols in the first symbol group sequence and further by time reversing symbols in at least some of the groups of symbols. Also for each of the plurality of different user channels, the transmitter comprises circuitry ( 24 ⁢ n 2 ) for forming a second modulated symbol group sequence for the user channel by modulating the symbols in the second symbol group sequence for the user channel with a unique code that corresponds to the user and distinguishes the user from each other of the plurality of different user channels. Finally, the transmitter comprises circuitry (26 2 ) for combining the second modulated symbol group sequences and providing them for transmission by the second antenna (AT1 2 ).

Method for transmission of unicast control in broadcast/multicast transmission time intervals

Embodiments of the invention provide methods for maximizing the bandwidth utilization in the uplink of a communication system supporting time division multiplexing between unicast and multicast/broadcast communication modes during transmission time intervals in the downlink of a communication system. This is accomplished by multiplexing at least unicast control signaling for UL scheduling assignments in TTIs supporting the multicast/broadcast communication mode. Moreover, multiplexing of unicast control signaling can also be accomplished by splitting a symbol of the multicast/broadcast TTI into two shorter symbols with the first of these two shorter symbols carrying at least unicast control signaling and the second of these shorter symbols carrying multicast/broadcast signaling.

Cqi feedback for ofdma systems

Embodiments of a feedback generator and decoder and methods of operating the feedback generator and decoder are presented. In one embodiment, the feedback generator includes a CQI compression module configured to provide a compressed CQI for the user equipment corresponding to at least one sub-band, where a sub-band is composed of at least one resource block. The feedback generator also includes a transmit module coupled to the CQI compression module and configured to transmit the compressed CQI to a serving base station. In one embodiment, the feedback decoder includes a receive module configured to receive a compressed CQI in the base station from user equipment corresponding to at least one sub-band. The feedback decoder also includes a CQI restoration module coupled to the receive module and configured to provide a restored CQI from the compressed CQI for the at least one sub-band.

Precoding codebook design for single user MIMO

A transmitter is for use with multiple transmit antennas and includes a precoder unit configured to precode data for a transmission using a precoding matrix selected from a codebook, wherein the codebook corresponds to the following three transmission properties for an uplink transmission: 1) all precoding elements from the precoding matrix have a same magnitude, 2) each precoding element from the precoding matrix is taken from a set of finite values and 3) there is only one non-zero element in any row of the precoding matrix. The transmitter also includes a transmit unit configured to transmit the precoded data.

MIMO system with spatial diversity

A method of transmitting a wireless signal (FIGS. 2 and 3 A) is disclosed. A data stream (DATA) is received at a first transmitter ( 210 ). The data stream is also received by a second transmitter ( 214 ) that is remote from the first transmitter. The first transmitter ( 210 ) transmits a first part (S 1 ) of the data stream to a remote receiver ( 220 ). The second transmitter ( 214 ) transmits a second part (S 2 ) of the data stream to the remote receiver ( 220 ). The second transmitter ( 214 ) is remote from the first transmitter ( 210 ).

Wireless transmitter and receiver

Linear space-time block code with block STTD structure

Space-time block code with structure of a block STTD. 2×2 blocks allow partial orthogonality for low-complexity detection and optimized diversity gain and coding gain.

Slow uplink power control

Embodiments of the invention provide embodiments of the invention provide and method, network entity and user equipment for slow uplink power control of user equipment in a wireless communication system by responding to a long term control metric that is derived from an uplink channel metric over a plurality of transmission instances and a set of performance criteria. A method for slow uplink power control in accordance with and embodiment of the invention measures at least one uplink channel metric for user equipment and then determines an appropriate transmit power for the user equipment by using a control metric derived from the uplink channel metric corresponding to a plurality of transmission instances for the user equipment.

Multi-user detection for wireless transmission systems in the presence of interference

Cqi feedback structure

Embodiments of the present disclosure provide a reporting allocation unit, an indicator interpretation unit and methods of operating a reporting allocation unit and an indicator interpretation unit. In one embodiment, the reporting allocation unit includes an indicator configuration module configured to provide reporting interval and offset values of corresponding rank and channel quality indicators for user equipment. The reporting allocation unit also includes a sending module configured to transmit the reporting interval and offset values to the user equipment.

Predecoding for joint processing coordinated multi-point transmission

This invention is a method of predecoding for joint processing coordinated multi-point transmission. The invention identifies for a particular transmission the cooperating point and the transmit antenna. The invention selects a code by reference to a selected one of a super-cell codebook for each combination of cooperating point and transmit antenna and a multi-cell codebook for each transmit antenna regardless of the cooperating point.

CDMA wireless system with closed loop mode using 90 degree phase rotation and beamformer verification

A wireless communication system (10). The system comprises a user station (12). The user station comprises despreading circuitry (22) for receiving and despreading a plurality of slots received from at least a first transmit antenna (A12 1 ) and a second transmit antenna (A12 2 ) at a transmitting station (14). Each of the plurality of slots comprises a first channel (DPCH) comprising a first set of pilot symbols and a second channel (PCCPCH) comprising a second set of pilot symbols. The user station further comprises circuitry (50) for measuring a first channel measurement (α 1, n ) for each given slot in the plurality of slots from the first transmit antenna and in response to the first set of pilot symbols in the given slot. The user station further comprises circuitry (50) for measuring a second channel measurement (α 2, n ) for each given slot in the plurality of slots from the second transmit antenna and in response to the first set of pilot symbols in the given slot. The user station further comprises circuitry (52) for measuring a phase difference value (φ 2 ( n )) for each given slot in the plurality of slots in response to the first channel measurement and the second channel measurement for the given slot and in response to a ninety degree rotation of the given slot relative to a slot which was received by the despreading circuitry immediately preceding the given slot.

Joint processing down link coordinated multi-point reference signal support

This invention concerns multiplexing in Long Term Evolution (LTE) and Long Term Evolution-Advanced (LTE-A) in Evolved Universal Terrestrial Radio Access Network (E-UTRAN) wireless telephony. Joint processing down link coordinated multi-point reference signaling includes combining resource signal types at a user equipment, determining conflicts between resource signals of plural user equipment, puncturing resource signals of other cell upon determining conflicts between resource signals of plural user equipment and transmitting non-punctured combined resource signals from a user equipment.

Channel normalization

Soft estimate normalization for weighted multiantenna high-order modulation data channel together with separate antenna pilot channels using averaging in first time slots of a transmission time interval with corrections for subsequent time slots.

Interferer detection and channel estimation for wireless communications networks

System and method for improving performance of digital wireless communications systems in the presence of interferers. A preferred embodiment comprises generating a list of hypotheses from a list of known interferers and timing offsets, receiving a signal transmitted over-the-air, computing an error variance for each hypothesis, and selecting the hypothesis with the lowest error variance. The hypothesis can then be used to extract data from the received signal.

Slow uplink power control

Nested precoding codebook structures for MIMO systems

Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter is for use with N T transmit antennas and includes a precoder unit configured to precode data for transmission using a preceding matrix selected from a nested codebook, wherein the nested codebook provides codebooks corresponding to different transmission layers that are derived from column subsets of multiple N T ×N T preceding matrices. The transmitter also includes a transmit unit configured to transmit the precoded data. In another embodiment, the receiver includes a receive unit configured to receive preceded data. The receiver also includes a precoder selection unit configured to select a preceding matrix from a nested codebook for the preceded data, wherein the nested codebook provides codebooks corresponding to different transmission layers that are derived from column subsets of multiple N T ×N T preceding matrices.

Network signaling for network-assisted interference cancellation and suppression

Embodiments of the invention are directed to a cellular communication network that can determine whether communications between one base station-UE pair may interfere with another UE that is in the same cell or a different cell. The network identifies interference parameters associated with interference signals that may be received by a UE. The interference signals may be generated by the base station itself, such as communications with other UEs, or by a neighboring base station. The base station transmits the interference parameters to the UE. The UE receives the one or more parameters comprising information about signals expected to cause intra-cell or inter-cell interference. The UE then processes received signals using the one or more parameters to suppress the intra-cell or inter-cell interference.

Method and Apparatus for Increasing the Number of Orthogonal Signals Using Block Spreading

Embodiments of the invention apply block spreading to transmitted signals to increase the number orthogonally multiplexed signals. The principle of the disclosed invention can be applied to reference signals, acknowledgement signals, and channel quality indication signals. In any given time interval, the set of transmitted signals is defined by two sequences: the baseline sequence, and the block spreading sequence. Different transmitters using the same baseline sequence can be identified by using different block spreading sequences.

Uplink control for time-division duplex with asymmetric assignment

A link configuration unit includes a hybrid bundling module configured to provide a hybrid ACK/NAK bundling structure for an uplink ACK/NAK entity from user equipment, wherein the hybrid ACK/NAK bundling structure corresponds to an uplink-downlink configuration of subframe assignments. Additionally, the link configuration unit also includes a sending module configured to transmit the hybrid ACK/NAK bundling structure to the user equipment.

Physical downlink shared channel muting on cell-specific reference symbols locations for non-serving cells

In a wireless telecommunications system having plural base station (401, 402, 403) and plural mobile user equipment units (411, 412, 413), a primary serving base station transmits Physical Downlink Shared Channel (PDSCH) with zero energy (i.e., muted PDSCH) on the inter-cell CRS Resource Element (RE) location. Within the first Physical Resource Block (PRB 0), the RE positions in the frequency domain are indexed between 0 and 11. The muted PDSCH RE positions per antenna port are computed using the cell identifications (IDs) of all Coordinated Multipoint Reception (CoMP) cells other than the cell ID i. The invention defines the Orthogonal Frequency Division Multiplexing (OFDM) symbols in which muting occurs.

Antenna grouping and group-based enhancements for MIMO systems

Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter has at least three transmit antennas and includes a feedback decoding portion configured to recover at least one group-based channel quality indicator provided by a feedback signal from a receiver, wherein each group-based channel quality indicator corresponds to one of a set of transmission layer groupings. The transmitter also includes a modulator portion configured to generate at least one symbol stream and a mapping portion configured to multiplex each symbol stream to at least one transmission layer grouping. The transmitter further includes a pre-coder portion configured to couple the transmission layers to the transmit antennas for a transmission. The receiver includes a decoder portion which is configured to use decoded signals from at least one group to decode the other groups.

Antenna Grouping and Group-Based Enhancements for MIMO Systems

Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter has at least three transmit antennas and includes a feedback decoding portion configured to recover at least one group-based channel quality indicator provided by a feedback signal from a receiver, wherein each group-based channel quality indicator corresponds to one of a set of transmission layer groupings. The transmitter also includes a modulator portion configured to generate at least one symbol stream and a mapping portion configured to multiplex each symbol stream to at least one transmission layer grouping. The transmitter further includes a pre-coder portion configured to couple the transmission layers to the transmit antennas for a transmission. The receiver includes a decoder portion which is configured to use decoded signals from at least one group to decode the other groups.

Mapping schemes for secondary synchronization signal scrambling

Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter includes a synchronization unit configured to provide a primary synchronization signal and a secondary synchronization signal having first and second segments. The transmitter also includes a secondary scrambling unit configured to provide a scrambled secondary synchronization signal, wherein scrambling agents for the first and second segments are derived from a primary synchronization sequence of the primary synchronization signal. The secondary scrambling unit is further configured to provide an additional scrambling of one of the first and second segments, wherein a second scrambling agent is derived from the remaining segment of a secondary synchronization sequence of the secondary synchronization signal. The transmitter further includes a transmit unit configured to transmit the primary synchronization signal and the scrambled secondary synchronization signal.

Pilot design and channel estimation

The invention provides a method for generating a pilot signal structure in an orthogonal frequency division multiplexing (OFDM) communication system having a transmitter with a least one transmitting antenna. The method involves composing a frame with a time domain and a frequency domain. The frame (1010) has a transmission time interval in the time domain. A pilot signal having a pilot power level is located into two orthogonal frequency division multiplexing symbols of the frame.

Physical downlink shared channel muting on cell-specific reference symbols locations for non-serving cells

In a wireless telecommunications system having plural base station (401, 402, 403) and plural mobile user equipment units (411, 412, 413), a primary serving base station transmits Physical Downlink Shared Channel (PDSCH) with zero energy (i.e., muted PDSCH) on the inter-cell CRS Resource Element (RE) location. Within the first Physical Resource Block (PRB 0), the RE positions in the frequency domain are indexed between 0 and 11. The muted PDSCH RE positions per antenna port are computed using the cell identifications (IDs) of all Coordinated Multipoint Reception (CoMP) cells other than the cell ID i. The invention defines the Orthogonal Frequency Division Multiplexing (OFDM) symbols in which muting occurs.

Mehrbenutzerdetektion für drahtlose übertragungssysteme in gegenwart von inteferenz

Network signaling for network-assisted interference cancellation and suppression

Embodiments of the invention are directed to a cellular communication network that can determine whether communications between one base station-UE pair may interfere with another UE that is in the same cell or a different cell. The network identifies interference parameters associated with interference signals that may be received by a UE. The interference signals may be generated by the base station itself, such as communications with other UEs, or by a neighboring base station. The base station transmits the interference parameters to the UE. The UE receives the one or more parameters comprising information about signals expected to cause intra-cell or inter-cell interference. The UE then processes received signals using the one or more parameters to suppress the intra-cell or inter-cell interference.