METHOD AND APPARATUS FOR MANAGING TIME ALIGNMENT TIMER FOR SMALL DATA TRANSMISSION IN WIRELESS COMMUNICATION SYSTEM

Title:

METHOD AND APPARATUS FOR MANAGING TIME ALIGNMENT TIMER FOR SMALL DATA TRANSMISSION IN WIRELESS COMMUNICATION SYSTEM

Document Type and Number:

WIPO Patent Application WO/2023/068699

Kind Code:

A1

Abstract:

The present disclosure relates to a method managing a time alignment timer (TAT) for small data transmission (SDT) in a wireless communication system. In particular, the method includes the steps of: starting a configured grant based small data transmission (CG-SDT) time alignment timer (TAT) upon receiving CG-SDT configuration; transmitting at least one data unit based on the CG-SDT configuration in RRC INACTIVE state during the CG-SDT TAT is running; and restarting the CG-SDT TAT based on a timing advance command (TAC) being received and based on a CG-SDT procedure being ongoing, wherein, based on the TAC being received and based on the CG-SDT procedure not being ongoing, the CG-SDT TAT is not restarted.

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Inventors:

LEE HANUL (KR)
YI SEUNGJUNE (KR)

Application Number:

PCT/KR2022/015717

Publication Date:

April 27, 2023

Filing Date:

October 17, 2022

Export Citation:

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Assignee:

LG ELECTRONICS INC (KR)

International Classes:

H04W72/12; H04L69/28; H04W72/23; H04W76/27; H04W76/30

Domestic Patent References:

WO2017119802A1

2017-07-13

Other References:

EMAIL DISCUSSION RAPPORTEUR (LENOVO): "Report from email discussion [POST112-e][550][SDT] Further details of CG aspects", 3GPP DRAFT; R2-2100930, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. E-meeting; 20210125 - 20210205, 14 January 2021 (2021-01-14), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051972755
EMAIL DISCUSSION RAPPORTEUR (HUAWEI, HISILICON): "Report from [POST113-e][504][SDT] CG open issues", 3GPP DRAFT; R2-2103533, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. E-meeting; 20210412 - 20210420, 2 April 2021 (2021-04-02), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052175028
APPLE: "Subsequent data transmission for SDT", 3GPP DRAFT; R2-2101368, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. E-meeting; 20210125 - 20210205, 15 January 2021 (2021-01-15), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051974298
VIVO: "Summary for AI 8.11.3 on the positioning support for UEs in RRC_INACTIVE state", 3GPP DRAFT; R2-2104495, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Online; 20210412 - 20210420, 12 April 2021 (2021-04-12), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051995182

Attorney, Agent or Firm:

KBK & ASSOCIATES (KR)

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