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    Transmitting node, receiving node and methods performed therein
    13.
    发明授权
    Transmitting node, receiving node and methods performed therein 有权

    公开(公告)号：US09935747B2

    公开(公告)日：2018-04-03

    申请号：US14408999

    申请日：2014-11-11

    申请人： Telefonaktiebolaget L M Ericsson (publ)

    发明人： Miguel Lopez ,  Stefan Eriksson Löwenmark ,  Mårten Sundberg

    IPC分类号： H04W4/00 ,  H04L5/00 ,  H04B7/06 ,  H04L1/06

    CPC分类号： H04L5/0044 ,  H04B7/0613 ,  H04B7/0669 ,  H04L1/0618 ,  H04L1/0643 ,  H04L1/0668 ,  H04L5/0092

    摘要： Embodiments herein relate to a method performed in a transmitting node (12) for transmitting at least one burst of energy to one or more receiving nodes (10,13) in a wireless communication network (1). The transmitting node (12) comprises a number of transmit antennas being more than one and wherein the at least one burst of energy carries a payload for one or more receiving nodes (10,13). The transmitting node (12) determines a shift, for one or more transmit antennas, in one or more signal characteristics of a burst of energy of the at least one burst of energy. The shift indicates one or more additional information bits, in addition to the payload, for a first receiving node (10). The transmitting node further transmits, over the one or more transmit antennas, the burst of energy of the at least one burst of energy with the shift in the signal characteristic carrying the payload to one or more receiving nodes (10,13) in the wireless communication network (1).

    BASE STATION AND OPERATING METHOD THEREOF
    14.
    发明申请
    BASE STATION AND OPERATING METHOD THEREOF 审中-公开

    公开(公告)号：US20180054239A1

    公开(公告)日：2018-02-22

    申请号：US15651000

    申请日：2017-07-17

    申请人： Sony Mobile Communications Inc.

    发明人： Erik BENGTSSON ,  Olof ZANDER

    IPC分类号： H04B7/0413 ,  H04B7/06 ,  H04L1/06 ,  H04B7/04

    CPC分类号： H04B7/0413 ,  H04B1/00 ,  H04B1/18 ,  H04B7/0469 ,  H04B7/0626 ,  H04B7/0669 ,  H04B7/0673 ,  H04B7/10 ,  H04L1/0625

    摘要： A base station, e.g., for massive MIMO, has channel receivers, each connected to a respective antenna among a plurality of antennas to receive an RF transmission signal generated by a communication device (CD). Each channel receiver has a channel front-end module, which has a first bandwidth and converts the RF transmission signal into one or more first analog baseband signals. The channel receivers are collectively operable to define a spatial beam focus at the CD, based on channel state information of the CD. The base station has pilot signal receivers, each connected to a respective antenna among the plurality of antennas to receive an RF pilot signal generated by theCD or another CD. Each pilot signal receiver has a pilot signal front-end module, which has a second bandwidth that is smaller than the first bandwidth and converts the RF pilot signal into one or more second analog baseband signals.

    Spatial spreading in a multi-antenna communication system
    16.
    发明授权
    Spatial spreading in a multi-antenna communication system 有权

    公开(公告)号：US09787375B2

    公开(公告)日：2017-10-10

    申请号：US14523450

    申请日：2014-10-24

    申请人： QUALCOMM Incorporated

    发明人： Jay Rodney Walton ,  Lizhong Zheng ,  John W. Ketchum ,  Mark S. Wallace ,  Steven J. Howard

    IPC分类号： H04B7/04 ,  H04B7/06 ,  H04B7/08 ,  H04B7/0417 ,  H04L1/06 ,  H04B17/336 ,  H04B7/0456

    CPC分类号： H04B7/0417 ,  H04B7/0456 ,  H04B7/0669 ,  H04B17/336 ,  H04L1/06

    摘要： Spatial spreading is performed in a multi-antenna system to randomize an “effective” channel observed by a receiving entity for each transmitted data symbol block. For a MIMO system, at a transmitting entity, data is processed (e.g., encoded, interleaved, and modulated) to obtain ND data symbol blocks to be transmitted in NM transmission spans, where ND≧1 and NM>1. The ND blocks are partitioned into NM data symbol subblocks, one subblock for each transmission span. A steering matrix is selected (e.g., in a deterministic or pseudo-random manner from among a set of L steering matrices, where L>1) for each subblock. Each data symbol subblock is spatially processed with the steering matrix selected for that subblock to obtain transmit symbols, which are further processed and transmitted via NT transmit antennas in one transmission span. The ND data symbol blocks are thus spatially processed with NM steering matrices and observe an ensemble of channels.