Title:
METHOD FOR RANDOM ACCESS AND COMMUNICATION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2021/031858
Kind Code:
A1
Abstract:
Provided by the present application are a method for random access and a communication apparatus, the method comprising: a terminal device measuring multiple synchronization signal blocks (SSB) sent by a network device in a first measurement period so as to determine a first transmission beam, the first transmission beam corresponding to a first SSB; the terminal device using the first transmission beam to transmit a first preamble to the network device at a first transmission power, so as to carry out a first random access; and when the first random access fails, the terminal device using the first transmission beam to transmit a second preamble to the network device at a second transmission power so as to carry out a second random access, the second transmission power being greater than the first transmission power. The terminal device of the present application may, as much as possible, not switch the transmission beam, in order to implement the power climbing when carrying out random access, thereby increasing the success rate of random access and shortening the completion time for random access.
Inventors:
PANG GAOKUN (CN)
DONG HUIYUN (CN)
LING CEN (CN)
LEI CHUNYANG (CN)
XU GUOQIN (CN)
ZHOU EN (CN)
DONG HUIYUN (CN)
LING CEN (CN)
LEI CHUNYANG (CN)
XU GUOQIN (CN)
ZHOU EN (CN)
Application Number:
PCT/CN2020/107252
Publication Date:
February 25, 2021
Filing Date:
August 06, 2020
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04W24/02
Foreign References:
| CN110461007A | 2019-11-15 | |||
| CN110312322A | 2019-10-08 | |||
| CN108391319A | 2018-08-10 | |||
| CN108289329A | 2018-07-17 | |||
| US20180332520A1 | 2018-11-15 | |||
| US20190069322A1 | 2019-02-28 |
Other References:
ETRI: "Remaining details on RACH procedure", 3GPP DRAFT; R1-1718004 REMAINING DETAILS ON RACH PROCEDURE_FINAL, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Prague, Czech; 20171009 - 20171013, 8 October 2017 (2017-10-08), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051341186
Attorney, Agent or Firm:
LONGSUN LEAD IP LTD. (CN)
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