COMBINED OPEN LOOP/CLOSED LOOP (CQI-BASED) UPLINK TRANSMIT POWER CONTROL WITH INTERFERENCE MITIGATION FOR E-UTRA

    公开(公告)号:CA2665178C

    公开(公告)日:2015-01-27

    申请号:CA2665178

    申请日:2007-09-26

    Abstract: A combined open loop and closed loop (channel quality indicator (CQI)-based) transmit power control (TPC) scheme with interference mitigation for a long term evolution (LTE) wireless transmit/receive unit (WTRU) is disclosed. The transmit power of the WTRU is derived based on a target signal-to-interference noise ratio (SINR) and a pathloss value. The pathloss value pertains to the downlink signal from a serving evolved Node-B (eNodeB) and includes shadowing. An interference and noise value of the serving eNodeB is included in the transmit power derivation, along with an offset constant value to adjust for downlink (DL) reference signal power and actual transmit power. A weighting factor is also used based on the availability of CQI feedback.

    113.
    发明专利
    未知

    公开(公告)号:BRPI0808233A2

    公开(公告)日:2014-07-22

    申请号:BRPI0808233

    申请日:2008-03-14

    Abstract: A method for transmitting feedback information for a wireless transmit receive unit (WTRU) includes multiplexing the feedback information with an uplink shared channel, mapping the multiplexed feedback information to OFDM symbols and transmitting the feedback information to an evolved Node B (eNB). The method also includes multiplexing the feedback information with the uplink shared channel using distributed frequency division multiplexing (FDM), mapping the feedback information to a first orthogonal frequency division multiplex (OFDM) symbol, and distributing the mapped feedback information equidistantly across the transmission bandwidth.

    METHOD AND APPARATUS FOR IMPLEMENTING SPACE TIME PROCESSING WITH UNEQUAL MODULATION AND CODING SCHEMES

    公开(公告)号:MY144368A

    公开(公告)日:2011-09-15

    申请号:MYPI20082432

    申请日:2007-01-10

    Abstract: A METHOD AND APPARATUS FOR IMPLEMENTING SPATIAL PROCESSING WITH UNEQUAL MODULATION AND CODING SCHEMES (MCSS) OR STREAM-DEPENDENT MCSS ARE DISCLOSED. INPUT DATA MAY BE PARSED INTO A PLURALITY OF DATA STREAMS, AND SPATIAL PROCESSING IS PERFORMED ON THE DATA STREAM (203A - 203NRX) TO GENERATE A PLURALITY OF SPATIAL STREAM (107A -107NSS). AN MCS FOR EACH DATA STREAM IS SELECTED INDEPENDENTLY. THE SPATIAL STREAMS (107A - 107NSS) ARE TRANSMITTED VIA MULTIPLE TRANSMIT ANTENNAS. AT LEAST ONE OF THE TECHNIQUES OF SPACE TIME BLOCK CODING (STBC), SPACE FREQUENCY BLOCK CODING (SFBC), QUASI- ORTHOGONAL ALAMOUTI CODING, TIME REVERSED SPACE TIME BLOCK CODING, LINEAR SPATIAL PROCESSING AND CYCLIC DELAY DIVERSITY (CDD) MAY BE PERFORMED ON THE DATA/SPATIAL STREAMS (107A - 107NSS). AN ANTENNA (126A - 126NTX) MAPPING MATRIX MAY THEN BE APPLIED TO THE SPATIAL STREAMS (170A -107NSS). THE SPATIAL STREAMS (107A - 107NSS) ARE TRANSMITTED VIA MULTIPLE TRANSMIT ANTENNAS. THE MCS FOR EACH DATA STREAM MAY BE DETERMINED BASED ON A SIGNAL-TO-NOISE RATIO OF EACH SPATIAL STREAM ASSOCIATED WITH THE DATA STREAM.

    116.
    发明专利
    未知

    公开(公告)号:BRPI0706914A2

    公开(公告)日:2011-04-12

    申请号:BRPI0706914

    申请日:2007-02-01

    Abstract: A receiver and receiving method for supporting multiple hybrid automatic repeat request (H-ARQ) processes per transmission time interval (TTI) are disclosed. A receiver includes a plurality of H-ARQ processes to receive multiple transport blocks (TBs) simultaneously per TTI. After receiving a plurality of TBs, which were assigned to multiple H-ARQ processes and after receiving the corresponding control information, the receiver sends feedback to each of the TBs indicating successful or unsuccessful receipt of each of the TBs to the transmitter.

    Method and apparatus for implementing space time processing with unequal modulation and coding schemes

    公开(公告)号:AU2007204966B2

    公开(公告)日:2010-05-13

    申请号:AU2007204966

    申请日:2007-01-10

    Abstract: A method and apparatus for implementing spatial processing with unequal modulation and coding schemes (MCSs) or stream-dependent MCSs are disclosed. Input data may be parsed into a plurality of data streams, and spatial processing is performed on the data streams to generate a plurality of spatial streams. An MCS for each data stream is selected independently. The spatial streams are transmitted via multiple transmit antennas. At least one of the techniques of space time block coding (STBC), space frequency block coding (SFBC), quasi-orthogonal Alamouti coding, time reversed space time block coding, linear spatial processing and cyclic delay diversity (CDD) may be performed on the data/spatial streams. An antennal mapping matrix may then be applied to the spatial streams. The spatial streams are transmitted via multiple transmit antennas. The MCS for each data stream may be determined based on a signal-to-noise ratio of each spatial stream associated with the data stream.

Patent Agency Ranking