US 12,323,978 B2
Methods and apparatus for sending and receiving second stage SCI, storage medium, sending UE, and receiving UE
Meng Zhang, Shanghai (CN); and Xin Qu, Shanghai (CN)
Assigned to SPREADTRUM COMMUNICATIONS (SHANGHAI) CO., LTD., Shanghai (CN)
Appl. No. 17/765,243
Filed by SPREADTRUM COMMUNICATIONS (SHANGHAI) CO., LTD., Shanghai (CN)
PCT Filed Aug. 14, 2020, PCT No. PCT/CN2020/109121
§ 371(c)(1), (2) Date Mar. 30, 2022,
PCT Pub. No. WO2021/063116, PCT Pub. Date Apr. 8, 2021.
Claims priority of application No. 201910941108.3 (CN), filed on Sep. 30, 2019.
Prior Publication US 2022/0312401 A1, Sep. 29, 2022
Int. Cl. H04W 72/20 (2023.01); H04L 5/00 (2006.01)
CPC H04W 72/20 (2023.01) [H04L 5/0048 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A method for sending second stage Sidelink Control Information (SCI), comprising:
determining a first Demodulation Reference Signal (DMRS) symbol of a Physical Sidelink Shared Channel (PSSCH);
configuring symbols of the second stage SCI based on the first DMRS symbol in an ascending or descending order of subcarriers of the first DMRS symbol, wherein Resource Elements (REs) of the symbols of the second stage SCI are not used for transmitting DMRS symbols; and
sending the second stage SCI;
wherein the method further comprises:
determining position information of a time-frequency resource used for sending the second stage SCI, and configuring the second stage SCI based on the position information, the first DMRS symbol and the subcarriers, wherein the position information comprises a starting position of the time-frequency resource used for sending the second stage SCI;
wherein an RE of the starting position of the second stage SCI and an RE of a DMRS symbol of the PSSCH scheduled by the second stage SCI are adjacent and located in a same Orthogonal Frequency Division Multiplexing (OFDM) symbol; or the RE of the starting position of the second stage SCI and the RE of the DMRS symbol of the PSSCH scheduled by the second stage SCI are adjacent and located in a same subcarrier;
wherein said configuring the second stage SCI comprises:
determining the RE of the DMRS symbol which is adjacent to the starting position of the second stage SCI;
configuring a first second stage SCI symbol on the RE of the starting position of the second stage SCI;
on a subcarrier same as a subcarrier of the first second stage SCI symbol, determining another RE which is adjacent to the RE of the DMRS symbol and has a subcarrier same as a subcarrier of the RE of the DMRS symbol, and configuring a second second stage SCI symbol; and
configuring two second stage SCI symbols sequentially on two REs which are adjacent to the REs of the DMRS symbol according to an ascending or descending order of subcarriers of the DMRS symbol.