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    VIDEO CODEC DATA RECOVERY TECHNIQUES FOR LOSSY WIRELESS LINKS
    1.
    发明申请
    VIDEO CODEC DATA RECOVERY TECHNIQUES FOR LOSSY WIRELESS LINKS 审中-公开

    公开(公告)号：WO2019125567A1

    公开(公告)日：2019-06-27

    申请号：PCT/US2018/052373

    申请日：2018-09-24

    申请人： ADVANCED MICRO DEVICES, INC.

    发明人： VU, Ngoc Vinh

    IPC分类号： H04N19/51 ,  H04L1/00

    CPC分类号： H04L1/0003 ,  G06T11/60 ,  H04B7/0617 ,  H04L1/0009 ,  H04L1/0011 ,  H04L1/0017 ,  H04N19/51 ,  H04N19/85

    摘要： Systems, apparatuses, and methods for implementing data recovery techniques for lossy wireless links are disclosed. A transmitter is configured to encode a video stream and wirelessly transmit the encoded video stream to a receiver, with the video stream representing a virtual reality (VR) rendered environment. The transmitter partitions the video stream into a plurality of substream components based on frequency. Motion vector parameters are calculated for the lowest frequency substream component of the video stream only, and the motion vector parameters are sent to the receiver using a low MCS level. When the receiver receives the motion vector parameters, but the receiver does not receive the lowest frequency component of a given chunk, the receiver uses the motion vector parameters to reconstruct the lowest frequency component of the given chunk by extrapolating from a corresponding chunk of the previous video frame.

    DATA RATE SELECTION FOR WAKE-UP RADIO TRANSMISSIONS
    4.
    发明申请
    DATA RATE SELECTION FOR WAKE-UP RADIO TRANSMISSIONS 审中-公开

    公开(公告)号：WO2018200575A1

    公开(公告)日：2018-11-01

    申请号：PCT/US2018/029206

    申请日：2018-04-24

    申请人： QUALCOMM INCORPORATED

    发明人： VERMA, Lochan ,  SHELLHAMMER, Stephen, Jay ,  TIAN, Bin

    IPC分类号： H04W52/02

    CPC分类号： H04L1/0025 ,  H04L1/0002 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0023 ,  H04W28/22 ,  H04W52/0235

    摘要： Methods, systems, and devices for data rate adaptation to extend the range of wake-up radio transmissions sent to a wake-up radio of a station (STA). Data rate adaptation procedures may be used to select a data rate for wake-up radio transmission based on one or more identified parameters. An access point may execute one or more different types of rate adaptation procedures to select the appropriate data rate. In some examples, the access point may select a data rate of wake-up radio transmissions based on one or more messages failing to be successfully decoded. In some examples, the access point may select a data rate of wake-up radio transmissions based on a distance between the access point and the station. In some examples, the access point may select a data rate of wake-up radio transmission based on information identified during a training procedure.

    一种下行数据帧的传输方法和设备
    8.
    发明申请
    一种下行数据帧的传输方法和设备 审中-公开

    公开(公告)号：WO2018014161A1

    公开(公告)日：2018-01-25

    申请号：PCT/CN2016/090318

    申请日：2016-07-18

    申请人： 华为技术有限公司

    发明人： 高波 ,  聂世玮 ,  景磊 ,  王振平

    IPC分类号： H04L1/00

    CPC分类号： H04L1/0041 ,  H04B10/27 ,  H04B10/516 ,  H04J14/0223 ,  H04L1/0009 ,  H04L1/0075 ,  H04L7/0075

    摘要： 本发明的实施例提供一种下行数据帧的传输方法，所述方法用于无源光网络PON系统，包括：OLT设备生成下行数据帧，所述下行数据帧包括帧头和净荷，所述帧头包括物理同步序列Psync字段，所述Psync字段用于识别所述下行数据帧，其中，在所述Psync字段的值为第一值时，所述Psync字段还用于指示净荷数据受到前向纠错FEC的保护，在所述Psync字段的值为第二值时，所述Psync字段还用于指示所述净荷数据不受FEC的保护；所述OLT设备将所述下行数据帧发送出去。本发明实施例可以降低FEC指示状态的误码率，提高FEC指示状态的可靠性。

    FORWARD ERROR CORRECTION FOR LOW-DELAY RECOVERY FROM PACKET LOSS
    9.
    发明申请
    FORWARD ERROR CORRECTION FOR LOW-DELAY RECOVERY FROM PACKET LOSS 审中-公开
    前向纠错，用于从丢包中恢复低延迟

    公开(公告)号：WO2017165351A1

    公开(公告)日：2017-09-28

    申请号：PCT/US2017/023313

    申请日：2017-03-21

    申请人： CISCO TECHNOLOGY, INC.

    发明人： BADR, Ahmed ,  KHISTI, Ashish, Jagadish ,  TAN, Dan ,  APOSTOLOPOULOS, John, George

    IPC分类号： H04L1/00 ,  H03M13/37 ,  H03M13/05

    CPC分类号： H04L1/0057 ,  H03M13/05 ,  H03M13/3761 ,  H04L1/0009 ,  H04L1/0041 ,  H04L1/0045 ,  H04L47/22

    摘要： An encoder receives a sequence of packets. For each packet, the encoder selects a window of at least previous packets in the sequence of packets. The encoder identifies in the window one or more earlier packets among the previous packets and one or more later packets separated from the one or more earlier packets by a gap including gap packets. The encoder encodes the one or more earlier packets and the one or more later packets into a forward error correction (FEC) packet corresponding to the packet, without using any of the gap packets, and transmits the FEC packet and the packet.

    摘要翻译：

    编码器接收一系列数据包。 对于每个分组，编码器在分组序列中选择至少先前分组的窗口。 编码器在窗口中识别先前分组中的一个或多个较早的分组以及通过包括间隙分组的间隙与一个或多个较早的分组分离的一个或多个较晚的分组。 编码器将一个或多个较早的分组和一个或多个较迟的分组编码成与分组相对应的前向纠错（FEC）分组，而不使用任何间隙分组，并发送FEC分组和分组。 >

    UPLINK TRANSMITTER AND RECEIVER USING UE-SELECTED MODULATION AND CODING SCHEME
    10.
    发明申请
    UPLINK TRANSMITTER AND RECEIVER USING UE-SELECTED MODULATION AND CODING SCHEME 审中-公开
    上行链路发射机和接收机采用用户选择的调制和编码方案

    公开(公告)号：WO2017140344A1

    公开(公告)日：2017-08-24

    申请号：PCT/EP2016/053190

    申请日：2016-02-15

    申请人： HUAWEI TECHNOLOGIES CO., LTD. ,  GANGAKHEDKAR, Sandip ,  RAMADAN, Ali ,  ZHAO, Zhao

    发明人： GANGAKHEDKAR, Sandip ,  RAMADAN, Ali ,  ZHAO, Zhao

    IPC分类号： H04L1/00

    CPC分类号： H04L1/0023 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0033 ,  H04L1/007

    摘要： The disclosure relates to an uplink transmitter (500) for a user equipment (UE) for communication to a base station (BS), the uplink transmitter (500) comprising: a link adaptation module (501), configured to select a UE modulation and coding scheme (MCS) (502) based on a target criterion; an uplink signal processing chain (503), configured to prepare and process an uplink transport block (504) according to the selected UE MCS (502); a coding and modulation module (505), configured to encode and modulate the selected UE MCS (502) according to a predetermined BS MCS (510); a transmission module (507), configured to transmit the processed uplink transport block (504) together with the modulated and encoded selected UE MCS (506) over an uplink radio communication channel. The disclosure further relates to an uplink receiver (1000) for a base station which demodulates and decodes the received uplink data symbols based on the decoded UE MCS value.

    摘要翻译： 本公开涉及用于用户设备（UE）用于与基站（BS）通信的上行链路发射机（500），所述上行链路发射机（500）包括：链路自适应模块（501） ，被配置为基于目标标准来选择UE调制和编码方案（MCS）（502） 上行链路信号处理链（503），被配置为根据所选择的UE MCS准备并处理上行链路传输块（504）（502）; 编码和调制模块（505），被配置为根据预定的BS MCS（510）对所选择的UE MCS（502）进行编码和调制; 传输模块（507），被配置为通过上行链路无线电通信信道传输经处理的上行链路传输块（504）以及调制和编码的选定UE MCS（506）。 本公开还涉及用于基站的上行链路接收机（1000），其基于解码的UE MCS值对接收到的上行链路数据符号进行解调和解码。