DEMODULATION REFERENCE SIGNAL (DMRS) OVERHEAD IN SIDELINK WIRELESS COMMUNICATIONS

    公开(公告)号:WO2021231864A1

    公开(公告)日:2021-11-18

    申请号:PCT/US2021/032452

    申请日:2021-05-14

    Abstract: Transmit and receive wireless communication devices configured to independently determine the same transport block size (TBS) for use with sidelink communications. In an illustrative example, a transmitting device includes a transceiver; a memory; and a processor, with the processor configured to generate or obtain a Physical Sidelink Feedback Channel (PSFCH) overhead indicator indicating whether PSFCH overhead is used in determining the TBS. The processor also determines a number of demodulation reference signal (DMRS) resource elements (REs) associated with DMRS overhead for use in the TBS determination. The processor determines the TBS based on the number of DMRS REs and on the PSFCH overhead indicator, and then transmits signals to a receiving device using sidelink wireless communication that include a PSFCH overhead indicator. The signals are transmitted according to the determined TBS. The PSFCH overhead indicator indicates whether PSFCH overhead is to be used by the receiving device for TBS determination.

    SELECTING A RETRANSMISSION MODE BASED ON A MINIMUM TIME DURATION

    公开(公告)号:WO2021229305A8

    公开(公告)日:2021-11-18

    申请号:PCT/IB2021/000356

    申请日:2021-05-13

    Abstract: Apparatuses, methods, and systems are disclosed for supporting a mixture of BR and HFBT. One apparatus (600) includes a processor (605) that provides a physical ("PHY") layer (255) and a Medium Access Control ("MAC") layer (260) and a transceiver (625) that communicates on a sidelink channel. The processor (605) determines (805) a minimum time duration between a first resource for HARQ transmission of the transport block ("TB") and a second resource for HARQ transmission of the TB. Here, the minimum time duration comprises a sum of: a first time to receive HARQ feedback, a second time to determine whether to perform retransmissions of the TB, and a third time to retransmit the TB. The processor (605) selects (810) a retransmission mode based on the minimum time duration and selects (815) sidelink resources for retransmission of the TB based on the selected retransmission mode.

    HARQ-ACK反馈信息的触发方法、发送方法及系统

    公开(公告)号:WO2021139827A1

    公开(公告)日:2021-07-15

    申请号:PCT/CN2021/075636

    申请日:2021-02-05

    Inventor: 周欢

    Abstract: 本发明公开了一种HARQ-ACK反馈信息的触发方法、发送方法、触发系统、发送系统、存储介质及电子设备,所述触发方法通过对SPS PDSCH预先配置一个或多个组索引,所述组索引为所述HARQ-ACK反馈信息的唯一标识;利用SPS PDSCH向UE发送下行数据;判断是否接收到UE反馈的由组索引标识的HARQ-ACK反馈信息;若否,则向UE发送DCI,DCI包括组索引,组索引用于触发UE重新发送HARQ-ACK反馈信息。由此,当低优先级业务的SPS PDSCH HARQ-ACK被丢弃或无法发送时,gNB能够快速灵活的采用PDCCH通知UE重新发送被丢弃的HARQ-ACK反馈信息。

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