Title:
QCL INDICATION METHOD AND RELATED DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/022732
Kind Code:
A1
Abstract:
The present application provides a quasi co-location (QCL) indication method and a related device, which can be applied to coordinated multi-station transmission. In the present method, a terminal receives QCL indication information, the QCL indication information being used for indicating that time-frequency spread information of a demodulation reference signal (DMRS) is associated with time-frequency spread information of N tracking reference signals (TRSs) (or the TRS corresponding to the DMRS), and delay frequency shift information of the DMRS being associated with delay frequency shift information of the M TRSs. The present method facilitates performing, by a network device side before sending, delay compensation and/or frequency shift compensation for a DMRS to be sent so as to cause large-scale channel information of the DMRS from multiple network devices to the terminal to be the same, and also enables the terminal to receive the DMRS with an appropriate reference delay and/or reference frequency shift, thereby improving the multi-station transmission performance.
Inventors:
JI LIULIU (CN)
BI XIAOYAN (CN)
BI XIAOYAN (CN)
Application Number:
PCT/CN2021/109944
Publication Date:
February 03, 2022
Filing Date:
July 31, 2021
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04B7/024; H04L5/00; H04L25/02
Foreign References:
| CN109565432A | 2019-04-02 | |||
| US20130279437A1 | 2013-10-24 | |||
| CN110291744A | 2019-09-27 | |||
| US20180227929A1 | 2018-08-09 | |||
| CN202010762047A | 2020-07-31 |
Other References:
HUAWEI, HISILICON: "Reference Signal for fine time and frequency tracking", 3GPP DRAFT; R1-1715475, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Nagoya, Japan; 20170918 - 20170921, 11 September 2017 (2017-09-11), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051329258
ERICSSON: "Multi-TRP and multi-panel transmission", 3GPP DRAFT; R1-1716345 MULTI-TRP AND MULTI-PANEL TRANSMISSION, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Nagoya, Japan; 20170918 - 20170921, 12 September 2017 (2017-09-12), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051329934
See also references of EP 4181447A4
ERICSSON: "Multi-TRP and multi-panel transmission", 3GPP DRAFT; R1-1716345 MULTI-TRP AND MULTI-PANEL TRANSMISSION, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Nagoya, Japan; 20170918 - 20170921, 12 September 2017 (2017-09-12), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051329934
See also references of EP 4181447A4
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
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