US 12,445,957 B2
Operation mode indication method, apparatus, and system
Weilin Qu, Beijing (CN); Juan Zheng, Beijing (CN); Chaojun Li, Beijing (CN); and Zhe Jin, Beijing (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed on Jan. 18, 2023, as Appl. No. 18/155,881.
Application 18/155,881 is a continuation of application No. PCT/CN2021/105631, filed on Jul. 10, 2021.
Claims priority of application No. 202010723884.9 (CN), filed on Jul. 24, 2020.
Prior Publication US 2023/0156595 A1, May 18, 2023
Int. Cl. H04B 7/04 (2017.01); H04B 7/0404 (2017.01); H04B 7/0452 (2017.01); H04L 5/00 (2006.01); H04W 52/02 (2009.01)
CPC H04W 52/0212 (2013.01) [H04B 7/0404 (2013.01); H04B 7/0452 (2013.01); H04L 5/0051 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A communication method, comprising:
receiving first information from a network device, wherein the first information indicates a first multi-antenna operation mode of a first terminal device, and the first information is carried in radio resource control (RRC) signaling or media access control (MAC) signaling;
receiving second information from the network device, wherein the second information indicates at least one first demodulation reference signal (DMRS) port number and a quantity N of demodulation reference signal DMRS code division multiplexing (CDM) groups that correspond to a second multi-antenna operation mode of the first terminal device, the N DMRS CDM groups comprise the at least one first DMRS port number, and N is a positive integer, wherein the second information is carried in downlink control information (DCI);
determining that a multi-antenna operation mode of the first terminal device is the second multi-antenna operation mode;
sending third information to the network device, wherein the third information indicates at least an application scenario or a device type of the first terminal device;
receiving fourth information from the network device, wherein the fourth information indicates a third multi-antenna operation mode of the first terminal device based on the third information; and
determining that a multi-antenna operation mode of the first terminal device is the third multi-antenna operation mode.