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    Physical Downlink Control Channel Design for NR Systems
    32.
    发明申请
    Physical Downlink Control Channel Design for NR Systems 审中-公开

    公开(公告)号：US20200344616A1

    公开(公告)日：2020-10-29

    申请号：US16926864

    申请日：2020-07-13

    申请人： MEDIATEK INC.

    发明人： Chien-Hwa Hwang ,  Chien-Chang Li ,  Yi-Ju Liao ,  Pei-Kai Liao ,  Weidong Yang

    IPC分类号： H04W16/28 ,  H04W72/04 ,  H04L5/00 ,  H04L1/18 ,  H04W74/08

    摘要： A new design for physical downlink control channel (PDCCH) is proposed for the next generation 5G new radio systems. A UE receives the configuration of a default control resource set (CORESET) in MIB/SIB from its serving base station. The default CORESET contains both common search space and UE-specific search space for candidate PDCCH transmission. A PDCCH in a default CORESET is mapped to physical resource in a distributed or localized manner. Specifically, various REG-to-CCE mapping rules are proposed to improve frequency diversity gain, or frequency selectivity gain, or to reduce latency of PDCCH processing. Further, to facilitate analog beamforming in mmWave systems, the default CORESET is transmitted in a synchronization signal (SS) block associated with a corresponding analog beam direction.

    Use of Different Precoders for Superposed Signals in Downlink Multiuser Superposition Transmission
    35.
    发明申请
    Use of Different Precoders for Superposed Signals in Downlink Multiuser Superposition Transmission 审中-公开
    在下行多用户叠加传输中使用不同的预编码器用于叠加信号

    公开(公告)号：US20160337018A1

    公开(公告)日：2016-11-17

    申请号：US15150991

    申请日：2016-05-10

    申请人： MEDIATEK INC.

    发明人： Chien-Hwa Hwang ,  Yi-Ju Liao ,  Lung-Sheng Tsai ,  Pei-Kai Liao

    IPC分类号： H04B7/04 ,  H04W72/04 ,  H04L5/00

    CPC分类号： H04B7/0452 ,  H04B7/0426 ,  H04J11/004 ,  H04J15/00 ,  H04L5/003 ,  H04L5/0051 ,  H04L25/0206 ,  H04W52/143 ,  H04W52/325 ,  H04W52/346

    摘要： A method of performing downlink multiuser superposition transmission (MUST) when different precoders are applied to superposed signals is proposed. For demodulation reference signal (DM-RS) transmission mode, the near-user can estimate the far-user's channel by means of separate DM-RS symbols. For common reference signal (CRS) transmission mode, the near-user can blindly detect code far-user's precoder that is not signaled to the near-user. As a result, even the downlink control information (DCI) format is designed for the situation using the same precoder for superposed signals, the MUST scheme works and the near-user receiver can separate the superposed signal for the far-user.

    摘要翻译： 提出了当对叠加的信号应用不同的预编码器时执行下行链路多用户叠加传输（MUST）的方法。 对于解调参考信号（DM-RS）传输模式，近用户可以通过单独的DM-RS符号估计远用户的信道。 对于公共参考信号（CRS）传输模式，近用户可以盲目检测未向近邻用户发送信号的远程用户预编码器。 结果，即使对于叠加信号使用相同的预编码器的情况也设计了下行链路控制信息（DCI）格式，所以MUST方案工作，并且近用户接收机可以分离用于远用户的叠加信号。

    Soft Buffer Partition for Superposition Coding
    36.
    发明申请
    Soft Buffer Partition for Superposition Coding 有权
    用于叠加编码的软缓冲区分区

    公开(公告)号：US20160192383A1

    公开(公告)日：2016-06-30

    申请号：US14980867

    申请日：2015-12-28

    申请人： MEDIATEK INC.

    发明人： Chien-Hwa Hwang ,  Yi-Ju Liao ,  Tze-Ping Low ,  Lung-Sheng Tsai

    IPC分类号： H04W72/12 ,  H04W72/04 ,  H04L1/18

    CPC分类号： H04L1/1812 ,  H04L1/0067 ,  H04L1/1822 ,  H04L1/1845 ,  H04L1/1896 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0053 ,  H04L5/0069 ,  H04L5/14 ,  H04W28/065 ,  H04W28/22 ,  H04W52/243 ,  H04W52/262 ,  H04W52/267 ,  H04W72/12 ,  H04W72/1252

    摘要： When the codeword level interference cancellation (CW-IC) is used at the receiver in conjunction with the superposition coding scheme at the transmitter, it is helpful if the soft buffer at the receiver is reserved not only for the desired transport blocks (TBs) but also for the interfering TBs handled by the CW-IC. In so doing, the soft channel bits of interfering TBs at multiple (re)transmissions can be combined to enhance the success rate of data decoding. A soft buffer partition method for the soft channel bits of the desired and interfering TBs in the superposition coding scheme is proposed. The proposed method has a full flexibility in adjusting the soft buffer sizes for the desired and interfering TBs.

    摘要翻译： 当在发射机处结合重叠编码方案在接收机处使用码字电平干扰消除（CW-IC）时，如果在接收机处的软缓冲器不仅被保留在期望的传输块（TB），而且 也用于CW-IC处理的干扰性TB。 在这样做时，可以组合多个（重新）传输的干扰TB的软信道比特以提高数据解码的成功率。 提出了一种用于叠加编码方案中期望和干扰TB的软信道比特的软缓冲区分割方法。 所提出的方法在调整所需和干扰TB的软缓冲区大小方面具有完全的灵活性。

    DESIGN ON TXRU CARRIER SWITCH FOR B5G/6G
    37.
    发明公开
    DESIGN ON TXRU CARRIER SWITCH FOR B5G/6G 审中-公开

    公开(公告)号：US20240155585A1

    公开(公告)日：2024-05-09

    申请号：US18500043

    申请日：2023-11-01

    申请人： MEDIATEK INC.

    发明人： Yi-Ju Liao ,  Pei-Kai Liao ,  Chi-Hsuan Hsieh ,  Wei-De Wu

    IPC分类号： H04W72/0453 ,  H04W72/232

    CPC分类号： H04W72/0453 ,  H04W72/232

    摘要： Apparatus and methods are provided for TxRU carrier switch. In one embodiment, the UE is configured with an anchor carrier in an anchor cell and one or more secondary carriers. In one embodiment, the TxRU carrier switch is configured as supplementary uplink (SUL)-based carrier switch with supplementary carriers or configured as a CA-based carrier switch with supplementary cells. In one embodiment, the one or more secondary carriers are supplementary carriers of the anchor cell, and wherein the anchor carrier is TDD carrier or frequency division duplex (FDD) carrier, and wherein the supplementary carrier is configured as a TDD carrier, a FDD carrier, a supplementary uplink carrier (SUL), or a supplementary downlink carrier (SDL). In another embodiment, the one or more secondary carriers are supplementary cells different from the anchor cell, and wherein the supplementary cells are configured with MAC control element (CE).