RANDOM ACCESS METHOD AND APPARATUS

WIPO Patent Application WO/2020/248944

A1

The present application provides a random access method and apparatus. According to the method, when a downlink measurement value of a terminal apparatus is not lower than a first measurement threshold, the terminal apparatus can select, from a NUL carrier and a SUL carrier, a target carrier configured with a first random access resource, and initiates two-step random access by means of the target carrier. The success rate of two-step random access can be improved because the two-step random access is not initiated only by means of the NUL carrier any more.

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HE QINGCHUN (CN)
CHANG JUNREN (CN)

PCT/CN2020/094964

December 17, 2020

June 08, 2020

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HUAWEI TECH CO LTD (CN)

H04W74/08

WO2018128426A1

2018-07-12

US20190110320A1

2019-04-11

ITL.: "Initial access and mobility for NR-U.", 3GPP TSG-RAN WG1 MEETING #94BIS R1-1811443., 12 October 2018 (2018-10-12), XP051518846, DOI: 20200814145713
ITL.: "RACH carrier selection for NR-U.", 3GPP TSG-RAN WG2 MEETING #103BIS R2-1815502., 12 October 2018 (2018-10-12), XP051524823, DOI: 20200814145733X
VIVO.: "Discussion on the MsgA resource selection.", 3GPP TSG-RAN WG2 MEETING #106 R2-1905655., 17 May 2019 (2019-05-17), XP051729158, DOI: 20200814145812X

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