METHOD EXECUTED BY USER EQUIPMENT AND USER EQUIPMENT

Title:

METHOD EXECUTED BY USER EQUIPMENT AND USER EQUIPMENT

Document Type and Number:

WIPO Patent Application WO/2021/139620

Kind Code:

A1

Abstract:

The present invention provides a method executed by a user equipment (UE) and the UE. The method executed by the UE comprises the following steps: starting a 2-step RA, used for transmission of user plane data to implement small data transmission (SDT); sending an MSG A, comprising a preamble and an MSG A payload; receiving an MSG B, wherein the MSG B comprises a random access response indicating a fallback and the random access response indicating the fallback further indicates that an UL grant comprised in the random access response is used for non-SDT, or the MSG B comprises a random access response indicating a fallback and the random access response indicating the fallback comprises an UL grant; sending an MSG 3, carrying identification information used for resolution of a competition conflict; and receiving an MSG 4, and if the identification information carried by the UE in the MSG 3 is carried, considering that the competition conflict is resolved, and a random access procedure is successfully completed.

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Inventors:

ZHANG CHONGMING (CN)
LIU RENMAO (CN)

Application Number:

PCT/CN2021/070105

Publication Date:

July 15, 2021

Filing Date:

January 04, 2021

Export Citation:

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Assignee:

SHARP KK (JP)
ZHANG CHONGMING (CN)

International Classes:

H04W74/08

Foreign References:

CN109804697A	2019-05-24
CN110012557A	2019-07-12
CN109586878A	2019-04-05

Other References:

VIVO: "Views on NR small data transmission enhancements in Rel-17", 3GPP DRAFT; RP-192549, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. TSG RAN, no. Sitges, Spain; 20191209 - 20191212, 2 December 2019 (2019-12-02), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051834191

Attorney, Agent or Firm:

CHINA SCIENCE PATENT & TRADEMARK AGENT LTD. (CN)

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