US 11,984,989 B2
Transmission method and apparatus
Qiang Fan, Hefei (CN); Jun Wang, Shanghai (CA); and Mingzeng Dai, Shenzhen (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed on Apr. 29, 2021, as Appl. No. 17/243,859.
Application 17/243,859 is a continuation of application No. PCT/CN2019/114421, filed on Oct. 30, 2019.
Claims priority of application No. 201811302615.4 (CN), filed on Nov. 2, 2018.
Prior Publication US 2021/0250131 A1, Aug. 12, 2021
Int. Cl. H04L 1/1812 (2023.01); H04L 5/00 (2006.01); H04W 72/20 (2023.01)
CPC H04L 1/1816 (2013.01) [H04L 5/0055 (2013.01); H04W 72/20 (2023.01)] 12 Claims
OG exemplary drawing
 
1. A transmission method, comprising:
obtaining information about a first sidelink (SL) transmission unit, wherein the first SL transmission unit is used on an SL for sending a to-be-transmitted data packet of a unicast connection or a groupcast communication group to a second terminal device, and the SL is a wireless communication link between a first terminal device and the second terminal device;
transmitting the data packet by using the first SL transmission unit in accordance with a hybrid automatic repeat request (HARQ) process corresponding to the unicast connection or the groupcast communication group;
receiving a HARQ feedback for the data packet in accordance with the HARQ process from the second terminal device on a first resource, wherein the first resource is determined according to a time domain location of sidelink control information (SCI) sent to the second terminal device;
in response to the HARQ feedback for the data packet being negative information (NACK), obtaining information about a second SL transmission unit; and
retransmitting the data packet by using the second SL transmission unit.