公开(公告)号：US20230361936A1

公开(公告)日：2023-11-09

申请号：US18353554

申请日：2023-07-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Miao LI ,  Weimin WU ,  Zhao SHEN

IPC: H04L1/1829 ,  H04W28/04 ,  H04W72/12 ,  H04W72/23

CPC classification number: H04L1/1829 ,  H04W28/04 ,  H04W72/12 ,  H04W72/23

Abstract: A data transmission method and a communication apparatus to improve transmission timeliness. In a wireless local area network, one channel transmission opportunity is obtained by an access point AP through contention. The AP sends service data to a station STA, and the STA feeds back a first data frame in which an error occurs in the service data to the AP. The AP sends scheduling information on a downlink channel to notify the STA of a retransmission resource unit used for retransmission of the first data frame, and retransmits the first data frame on the retransmission resource unit. Correspondingly, the STA receives the first data frame on the retransmission resource unit.