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    METHOD AND APPARATUS TO SUPPORT SINGLE USER (SU) AND MULTIUSER (MU) BEAMFORMING WITH ANTENNA ARRAY GROUPS
    21.
    发明申请
    METHOD AND APPARATUS TO SUPPORT SINGLE USER (SU) AND MULTIUSER (MU) BEAMFORMING WITH ANTENNA ARRAY GROUPS 审中-公开
    支持单用户（SU）和多天线（MU）与天线阵列波束组合的方法和装置

    公开(公告)号：US20090322613A1

    公开(公告)日：2009-12-31

    申请号：US12493552

    申请日：2009-06-29

    申请人： Erdem Bala ,  Philip J. Pietraski ,  Sung-Hyuk Shin

    发明人： Erdem Bala ,  Philip J. Pietraski ,  Sung-Hyuk Shin

    IPC分类号： H01Q3/00

    CPC分类号： H04B7/022 ,  H04B7/0417 ,  H04B7/0617 ,  H04B7/0639 ,  H04B7/0697

    摘要： A method and apparatus are used to support single user (SU) and multiuser (MU) beamforming with antenna array groups. The method and apparatus are used to precode a plurality of data streams, beamform each of the data streams, and provide each of the beamformed data streams to one of a plurality of antenna array groups. An alternate method and apparatus are used to select a beamforming vector from a codebook, transmit a common reference signal (RS) based on the selection, receive an antenna configuration responsive to the common RS, estimate channels based on the antenna configuration, determine beamforming vectors for a plurality of antenna array groups, and transmit the beamforming vectors.

    摘要翻译： 一种方法和装置用于支持具有天线阵列组的单用户（SU）和多用户（MU）波束成形。 该方法和装置用于对多个数据流进行预编码，对每个数据流进行波束形成，并将每个波束形成的数据流提供给多个天线阵列组中的一个。 替代方法和装置用于从码本中选择波束成形向量，基于选择发送公共参考信号（RS），响应于公共RS接收天线配置，基于天线配置来估计信道，确定波束形成向量 对于多个天线阵列组，并且发送波束形成向量。

    ENHANCED HYBRID AUTOMATIC REPEAT REQUEST FOR LONG TERM EVOLUTION
    22.
    发明申请
    ENHANCED HYBRID AUTOMATIC REPEAT REQUEST FOR LONG TERM EVOLUTION 审中-公开
    增强混合自动重复请求长期演进

    公开(公告)号：US20090313516A1

    公开(公告)日：2009-12-17

    申请号：US12485483

    申请日：2009-06-16

    申请人： Sung-Hyuk Shin ,  Erdem Bala ,  Philip J. Pietraski ,  Joseph S. Levy ,  Donald M. Grieco ,  Mohammed Sammour

    发明人： Sung-Hyuk Shin ,  Erdem Bala ,  Philip J. Pietraski ,  Joseph S. Levy ,  Donald M. Grieco ,  Mohammed Sammour

    IPC分类号： H04L1/18 ,  G06F11/14

    CPC分类号： H04L1/1806 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/1812

    摘要： A method and an apparatus are provided for receiving a transport block that is segmented into a plurality of code blocks (CBs), each CB having an attached cyclic redundancy check (CRC), decoding each of the plurality of CBs with attached CRC, determining whether each CRC fails, and in response to a determination that a CRC has failed, transmitting a CB index number of the CB attached to the CRC that has failed. Also provided are a method and an apparatus for a transmitter receiving an index number of a CB for retransmission (CBSIRT) attached with a CRC that has failed, determining the CB that correspond to the CRC that has failed based on the CBSIRT, and retransmitting the failed CB in a subsequent transmission time interval (TTI).

    摘要翻译： 提供了一种方法和装置，用于接收分段成多个码块（CB）的传输块，每个CB具有附加的循环冗余校验（CRC），用附加的CRC解码多个CB中的每一个，确定是否 每个CRC失败，并且响应于CRC已经失败的确定，发送附加到已经失败的CRC的CB的CB索引号。 还提供了一种用于发送器接收用于重发的CB的索引号（CBSIRT）的方法和装置，该附加CRC已经失败，确定与基于CBSIRT已经失败的CRC相对应的CB，并且重新发送 在随后的传输时间间隔（TTI）中发生故障CB。

    Method and System for Switching Antennas during Transmission Time Intervals in OFDMA Systems
    23.
    发明申请
    Method and System for Switching Antennas during Transmission Time Intervals in OFDMA Systems 有权
    OFDMA系统传输时间间隔期间切换天线的方法和系统

    公开(公告)号：US20080165879A1

    公开(公告)日：2008-07-10

    申请号：US11620089

    申请日：2007-01-05

    申请人： Neelesh B. Mehta ,  Erdem Bala ,  Jinyun Zhang

    发明人： Neelesh B. Mehta ,  Erdem Bala ,  Jinyun Zhang

    IPC分类号： H04B7/02

    CPC分类号： H04B7/0691 ,  H04B7/061

    摘要： A method and system switches antennas in an orthogonal frequency division multiplexed access (OFDMA) wireless communication system while transmitting symbols. Each symbol includes a cyclic prefix and a block of data signals. The symbols are transmitted during a first portion of a transmission time interval (TTI), from a first antenna. Then, the RF chain is switched to a second antenna to transmit the symbols, and in which the switching is performed substantially between transmitting two consecutive transmitted symbols.

    摘要翻译： 方法和系统在发送符号的同时在正交频分复用接入（OFDMA）无线通信系统中切换天线。 每个符号包括循环前缀和数据信号块。 在传输时间间隔（TTI）的第一部分期间，从第一天线发送符号。 然后，将RF链切换到第二天线以发送符号，并且其中基本上在发送两个连续发送的符号之间执行切换。

    Method and system for generating antenna selection signals in OFDM tranceivers with fewer RF chains than antennas in MIMO wireless networks
    27.
    发明授权
    Method and system for generating antenna selection signals in OFDM tranceivers with fewer RF chains than antennas in MIMO wireless networks 有权
    用于在MIMO无线网络中具有比天线更少的RF链的OFDM收发机中生成天线选择信号的方法和系统

    公开(公告)号：US08824420B2

    公开(公告)日：2014-09-02

    申请号：US11953452

    申请日：2007-12-10

    申请人： Neelesh B. Mehta ,  Erdem Bala ,  Jinyun Zhang

    发明人： Neelesh B. Mehta ,  Erdem Bala ,  Jinyun Zhang

    IPC分类号： H04W4/00 ,  H04B1/44

    CPC分类号： H04B7/061 ,  H04B7/0691 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/0228

    摘要： A method and system generating signal to select a subset of antennas from a set of antennas to transmit user data in a wireless communication system. User data are transmitted during a first transmission time intervals (TTI) using a first subset of antennas. Pilot tones are transmitted during a second TTI using a second subset of antennas. Corresponding channels are estimated for the first subset of antennas and the second subset of antennas from the user data and the pilot tones. Then, based on the estimating, an optimal subset of antenna is selected from the first subset of antennas and the second subset of antennas to transmit the user data during a sequent TTI, and in which the selecting is performed adaptively.

    摘要翻译： 一种方法和系统产生信号以从一组天线中选择天线的子集以在无线通信系统中传送用户数据。 在第一传输时间间隔（TTI）期间使用第一天线子集来发送用户数据。 在第二TTI期间使用第二天线子集来传送导频音调。 对于天线的第一子集和来自用户数据和导频音调的第二子天线子集估计相应的信道。 然后，基于估计，从第一天线子集和第二天线子集中选择天线的最佳子集，以便在后续TTI期间发送用户数据，并且其中选择被自适应地执行。

    Method and apparatus for implementing network coding in a long term evolution advanced system
    28.
    发明授权
    Method and apparatus for implementing network coding in a long term evolution advanced system 有权
    在长期演进高级系统中实现网络编码的方法和装置

    公开(公告)号：US08750251B2

    公开(公告)日：2014-06-10

    申请号：US12499964

    申请日：2009-07-09

    申请人： Sung-Hyuk Shin ,  Philip J. Pietraski ,  Mohammed Sammour ,  Erdem Bala

    发明人： Sung-Hyuk Shin ,  Philip J. Pietraski ,  Mohammed Sammour ,  Erdem Bala

    IPC分类号： H04W4/00 ,  H04B7/04

    CPC分类号： H04B7/0478 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/0665 ,  H04B7/15521 ,  H04L1/0026 ,  H04L1/0073 ,  H04L1/1812

    摘要： A method and apparatus for applying network coding in multi-user (MU) multiple-input multiple-output (MIMO) control signaling are disclosed. After a pair of wireless transmit/receive units (WTRUs) transmit channel state information (CSI) to an evolved Node-B (eNodeB), each of the WTRUs receive network coded information from the eNodeB, including the CSI transmitted by both of the WTRUs, and decode the network coded information. The WTRUs transmit CSI on a scheduled basis, and store CSI that was previously transmitted. Each of the WTRUs measure the amount of time that pass since they transmitted CSI, and use the transmitted CSI to decode the network coded information on the condition that the measured time does not exceed a predetermined threshold. If the measured time exceeds the predetermined threshold, the stored CSI is used to decode the network coded information.

    摘要翻译： 公开了一种在多用户（MU）多输入多输出（MIMO）控制信令中应用网络编码的方法和装置。 在一对无线发射/接收单元（WTRU）向发射的节点B（eNodeB）发送信道状态信息（CSI）之后，每个WTRU从eNodeB接收包括由两个WTRU发送的CSI的网络编码信息 并解码网络编码信息。 WTRU在调度的基础上发送CSI，并存储先前发送的CSI。 每个WTRU测量自它们发送CSI以来经过的时间量，并且在测量时间不超过预定阈值的条件下使用发送的CSI对网络编码信息进行解码。 如果测量时间超过预定阈值，则存储的CSI用于解码网络编码信息。