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Title:
METHOD AND APPARATUS FOR INDICATING DEMODULATION REFERENCE SIGNAL
Document Type and Number:
WIPO Patent Application WO/2022/262620
Kind Code:
A1
Abstract:
The present application provides a method for indicating a demodulation reference signal (DMRS). The method comprises: a terminal device receives first indication information, wherein the first indication information is used to determine a configuration of DMRSs, the configuration of the DMRSs comprises time-frequency resources occupied by the DMRSs, and the DMRSs occupy K symbols; the terminal device receives second indication information, wherein the second indication information is used to determine a first DMRS for channel estimation among the DMRSs, the first DMRS occupies L symbols, and L is less than K; the terminal device determines a time-frequency resource of the first DMRS according to the first indication information and the second indication information; and the terminal device uses the first DMRS to perform channel estimation, wherein K is an integer greater than 1, and L is an integer greater than 0. In the present application, the terminal device may use a portion of the DMRSs for channel estimation, which increases the number of orthogonal DMRS ports, thereby ensuring the performance of the system.

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Inventors:
HANG HAICUN (CN)
JI LIULIU (CN)
WANG XIAOHAN (CN)
JIN HUANGPING (CN)
LI TING (CN)
Application Number:
PCT/CN2022/097650
Publication Date:
December 22, 2022
Filing Date:
June 08, 2022
Export Citation:
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Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04L25/02
Foreign References:
CN109274472A2019-01-25
CN109391402A2019-02-26
CN110958067A2020-04-03
US20200052843A12020-02-13
Other References:
HUAWEI, HISILICON: "Discussion on DMRS design for NoMA with large number of users", 3GPP DRAFT; R1-1801363, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Athens, Greece; 20180226 - 20180302, 17 February 2018 (2018-02-17), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051397527
Attorney, Agent or Firm:
LONGSUN LEAD IP LTD. (CN)
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