US 12,294,545 B2
Method for receiving and sending reference signal, apparatus, and system
Yuwan Su, Shenzhen (CN); Xiang Mi, Beijing (CN); Xiaolei Tie, Shanghai (CN); and Zhe Jin, Beijing (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Jul. 30, 2021, as Appl. No. 17/389,979.
Application 17/389,979 is a continuation of application No. PCT/CN2019/074722, filed on Feb. 3, 2019.
Prior Publication US 2021/0359822 A1, Nov. 18, 2021
Int. Cl. H04L 5/00 (2006.01)
CPC H04L 5/0053 (2013.01) 14 Claims
OG exemplary drawing
 
1. A method for sending a reference signal, comprising:
determining, by a first terminal device of a plurality of terminal devices in a first cell of a wireless communications system, an index of a first sequence based on a first parameter value corresponding to the first terminal device, wherein the first parameter value is different from a parameter value corresponding to another terminal device in the plurality of terminal devices, wherein the plurality of terminal devices are capable of transmitting uplink data on a same time-frequency resource, wherein the determining, by the first terminal device, the index of the first sequence based on the first parameter value corresponding to the first terminal device comprises:
determining, by the first terminal device, the index of the first sequence based on the first parameter value, a group hopping pattern, a sequence shift pattern, and one or more specified values, wherein the group hopping pattern is determined based on a second sequence, and the sequence shift pattern is determined based on a cell identifier of the first cell,
wherein the first parameter value, the group hopping pattern, the sequence shift pattern, the one or more specified values, and the index of the first sequence satisfy the following first formula:
u=(fgh(ns)+fss+First parameter value)mod A; or
u=(fgh(ns)+fss+(First parameter value)mod F)mod A, wherein
u represents the index of the first sequence; fgh(ns) represents the group hopping pattern; fss represents the sequence shift pattern; mod represents a modulo operation; and A represents a first specified value, and F represents a second specified value, and wherein the first specified value A is equal to a quantity of continuous slots occupied by one resource unit (RU);
generating, by the first terminal device, a reference signal based on the first sequence indicated by the index of the first sequence; and
sending, by the first terminal device, the reference signal to a network device.