US 11,991,103 B2
Method and apparatus for phase tracking
Bingchao Liu, Beijing (CN); Chenxi Zhu, Beijing (CN); and Hongmei Liu, Beijing (CN)
Assigned to Lenovo (Beijing) Limited, Beijing (CN)
Appl. No. 17/274,738
Filed by LENOVO (BEIJING) LIMITED, Beijing (CN)
PCT Filed Apr. 3, 2018, PCT No. PCT/CN2018/081755
§ 371(c)(1), (2) Date Mar. 9, 2021,
PCT Pub. No. WO2019/191903, PCT Pub. Date Oct. 10, 2019.
Prior Publication US 2022/0052807 A1, Feb. 17, 2022
Int. Cl. H04L 5/00 (2006.01); H04B 7/0417 (2017.01)
CPC H04L 5/0048 (2013.01) [H04B 7/0417 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method performed by a user equipment (UE), the method comprising:
transmitting coherent information of a communication device, wherein the coherent information indicates:
that the communication device uses a non-coherent transmission, and a number of antenna ports configured at the communication device being N; or
that the communication device uses a partial-coherent transmission, the number of coherent antenna groups configured at the communication device being M, and the number of antenna ports in each coherent antenna group; and
receiving configuration information for the communication device, wherein the configuration information is based at least on the coherent information, indicates a plurality of phase tracking reference signal ports assigned to the communication device, and a number of the plurality of phase tracking reference signal ports being M.