Title:
SYSTEMS AND METHODS FOR PROVIDING TIMING ADVANCE (TA) VALUES
Document Type and Number:
WIPO Patent Application WO/2022/115977
Kind Code:
A1
Abstract:
A timing advance (TA) value is a time offset that may be applied by a UE to compensate for the propagation delay of the UE and thereby cause the UE's uplink transmissions to be time synchronized with the uplink transmissions of other UEs. However, a UE may possibly operate in different states, and in some states (e.g. a power saving state) the UE does not maintain uplink synchronization. If the UE has information to transmit, and the UE is operating in a state in which there is no uplink synchronization, then the overhead of performing uplink synchronization in order to transmit the information must be incurred. Systems and method are instead disclosed for providing TA values to maintain timing synchronization, e.g. even when the UE is in a power-saving state.
Inventors:
ZHANG LIQING (CA)
MA JIANGLEI (CA)
LYU YONGXIA (CN)
MA JIANGLEI (CA)
LYU YONGXIA (CN)
Application Number:
PCT/CN2020/133004
Publication Date:
June 09, 2022
Filing Date:
December 01, 2020
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04W56/00
Foreign References:
| US20150131636A1 | 2015-05-14 | |||
| CN102958073A | 2013-03-06 |
Other References:
QUALCOMM EUROPE: "Multi-user Timing control", 3GPP DRAFT; R1-070664, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. St. Louis, USA; 20070206, 6 February 2007 (2007-02-06), XP050104700
MODERATOR (NTT DOCOMO ET AL: "Summary on [101-e-NR-UEFeatures-2step-02]", vol. RAN WG1, no. e-Meeting; 20200525 - 20200605, 8 June 2020 (2020-06-08), XP051894336, Retrieved from the Internet [retrieved on 20200608]
MODERATOR (NTT DOCOMO ET AL: "Summary on email discussion [100b-e-NR-UEFeatures-Remaining] NR_2step_RACH", vol. RAN WG1, no. e-Meeting; 20200420 - 20200430, 15 May 2020 (2020-05-15), XP051885068, Retrieved from the Internet [retrieved on 20200515]
MODERATOR (NTT DOCOMO ET AL: "Summary on UE features for two-step RACH", vol. RAN WG1, no. e-Meeting; 20200525 - 20200605, 25 May 2020 (2020-05-25), XP051890544, Retrieved from the Internet [retrieved on 20200525]
MODERATOR (NTT DOCOMO ET AL: "Summary on [101-e-NR-UEFeatures-2step-02]", vol. RAN WG1, no. e-Meeting; 20200525 - 20200605, 8 June 2020 (2020-06-08), XP051894336, Retrieved from the Internet
MODERATOR (NTT DOCOMO ET AL: "Summary on email discussion [100b-e-NR-UEFeatures-Remaining] NR_2step_RACH", vol. RAN WG1, no. e-Meeting; 20200420 - 20200430, 15 May 2020 (2020-05-15), XP051885068, Retrieved from the Internet
MODERATOR (NTT DOCOMO ET AL: "Summary on UE features for two-step RACH", vol. RAN WG1, no. e-Meeting; 20200525 - 20200605, 25 May 2020 (2020-05-25), XP051890544, Retrieved from the Internet
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