US 12,137,398 B2
Feedback channel sending method and apparatus, and feedback channel receiving method and apparatus
Hongjia Su, Shanghai (CN); Jinfang Zhang, Shenzhen (CN); Zhengzheng Xiang, Shanghai (CN); and Lei Lu, Shanghai (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Jun. 30, 2021, as Appl. No. 17/363,425.
Application 17/363,425 is a continuation of application No. PCT/CN2020/071293, filed on Jan. 10, 2020.
Claims priority of application No. 201910028002.4 (CN), filed on Jan. 11, 2019; and application No. 201910749320.X (CN), filed on Aug. 14, 2019.
Prior Publication US 2021/0329431 A1, Oct. 21, 2021
Int. Cl. H04W 4/40 (2018.01); H04L 5/00 (2006.01); H04W 72/23 (2023.01); H04L 1/00 (2006.01); H04W 92/18 (2009.01)
CPC H04W 4/40 (2018.02) [H04L 5/0094 (2013.01); H04W 72/23 (2023.01); H04L 1/0038 (2013.01); H04W 92/18 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A feedback channel receiving method, comprising:
obtaining, by a first terminal device, configuration information of a sidelink resource pool, wherein the sidelink resource pool is defined by a network device for sidelink communication between the first terminal device and a second terminal device, wherein the configuration information is used to indicate that frequency domain resources of the sidelink resource pool comprise L sub-channels and each sub-channel of the L sub-channels comprises q resource blocks (RBs), wherein the L sub-channels comprise M sub-channels and N sub-channels, wherein the M sub-channels are used by the first terminal device to send at least one of a physical sidelink control channel (PSCCH) or a physical sidelink shared channel (PSSCH), wherein the N sub-channels are used by the first terminal device to receive a physical sidelink feedback channel (PSFCH) from the second terminal device, wherein there is a correspondence between one of the M sub-channels and one of N·q RBs comprised in the N sub-channels, wherein N·q≥M, wherein L, M, N, and q are all integers greater than or equal to 1, wherein L, q, M, and N satisfy N=┌L/(1+q)┐, L=M+N, and wherein ┌ ┐ represents rounding up;
sending, by the first terminal device, at least one of a first PSCCH or a first PSSCH on a first channel in a slot n, wherein the first channel comprises one or more of the M sub-channels;
determining, by the first terminal device based on the correspondence and the first channel, a first RB on which a first PSFCH sent by the second terminal device for at least one of the first PSCCH or the first PSSCH is received from the second terminal device, wherein the first RB belongs to the N·q RBs comprised in the N sub-channels; and
receiving, by the first terminal device, the first PSFCH from the second terminal device on the first RB in a slot n+k, wherein n≥0, k≥1, and wherein both n and k are integers.