US 12,137,450 B2
Communications method and apparatus
Meng Hua, Shanghai (CN); Yuan Yang, Beijing (CN); Hao Tang, Shanghai (CN); Han Zhou, Shanghai (CN); Changguo Jiang, Beijing (CN); and Hao Wang, Beijing (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Nov. 11, 2020, as Appl. No. 17/095,542.
Application 17/095,542 is a continuation of application No. PCT/CN2019/086478, filed on May 10, 2019.
Claims priority of application No. 201810451238.4 (CN), filed on May 11, 2018.
Prior Publication US 2021/0068134 A1, Mar. 4, 2021
Int. Cl. H04W 72/1273 (2023.01); H04B 7/0452 (2017.01); H04B 7/0456 (2017.01); H04L 5/00 (2006.01); H04W 72/0453 (2023.01)
CPC H04W 72/1273 (2013.01) [H04B 7/0452 (2013.01); H04B 7/0456 (2013.01); H04L 5/0048 (2013.01); H04W 72/0453 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A communications method comprising:
determining, by a first terminal side device, a frequency domain resource of a scheduled first physical downlink shared channel (PDSCH),
wherein the frequency domain resource comprises N consecutive frequency domain units,
wherein a first demodulation reference signal (DM-RS) is transmitted for the first PDSCH on a first antenna port of the first terminal side device and in each of L consecutive frequency domain units in the N consecutive frequency domain units, and
wherein there is a second DM-RS of a second terminal side device on a second antenna port of the second terminal side device in each of the L consecutive frequency domain units in the N frequency domain units; and
determining, by the first terminal side device, that precoding of the second DM-RS of the second terminal side device is the same as the precoding of the first DM-RS based on the transmission of the second DM-RS also being in each of the L frequency domain units,
wherein the second DM-RS and the first DM-RS are in a same code division multiplexing (CDM) group,
wherein the second DM-RS is transmitted for a second PDSCH scheduled for the second terminal side device, and
wherein N is an integer greater than 1, L is less than or equal to N, and is an integer greater than 1.