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Patent Searching and Data


Title:
NON-COMPETING RANDOM ACCESS METHOD AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2019/161793
Kind Code:
A1
Abstract:
Provided in the application is a method for non-competing random access, comprising: receiving a PDCCH command via a first demodulation reference signal (DM-RS) port, wherein the PDCCH order comprises a first SSB index, and the PDCCH command is used to indicate to use a first preamble for random access on a first RACH resource corresponding to a first SSB index; transmitting MSG1 by using the first preamble on the first RACH resource according to the PDCCH command; and determining to receive MSG2 by means of a second DM-RS port according to the first DM-RS port, wherein the second DM-RS port has a QCL relationship with the first DM-RS port. According to the method, there is no need to receive the MSG2 by using a beam corresponding to the SSB index indicated by the PDCCH command. Therefore, it can be avoided that a terminal device fails to receive the MSG2 due to misalignment between a transmission beam and a receiving beam corresponding to the SSB index indicated by the PDCCH command.

Inventors:
TIE XIAOLEI (CN)
HUA MENG (CN)
Application Number:
PCT/CN2019/075968
Publication Date:
August 29, 2019
Filing Date:
February 22, 2019
Export Citation:
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Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04L5/00
Domestic Patent References:
WO2017183309A12017-10-26
Foreign References:
CN101873707A2010-10-27
CN201810157530A2018-02-24
Other References:
See also references of EP 3651404A4
Attorney, Agent or Firm:
LONGSUN LEAD IP LTD. (CN)
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