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Title:
METHOD AND APPARATUS FOR INTERCELL CROSS-TRP SEAMLESS MOBILITY
Document Type and Number:
WIPO Patent Application WO/2023/192692
Kind Code:
A3
Abstract:
According to embodiments, a UE receives, from a source cell, a mobility pre-configuration radio resource control (RRC) message for random-access channel (RACH)-less access. The mobility pre-configuration RRC message indicates target timing advance (TA) assistance information. The UE receives, from the source cell, a lower layer target access command. The lower layer target access command indicates a most updated or latest network-updated time sensitive dynamic TA assistance information. The UE determines a target cell TA of a target cell based on a latest source cell TA of the source cell, a latest measured timing difference between reference signals (RSs) from the source cell and from the target cell, the most updated or latest network-updated time sensitive dynamic TA assistance information, and the target TA assistance information. The UE performs the RACH-less mobility access to the target cell based on the target cell TA.

Inventors:
ZOU JIALIN (US)
LIU JIALING (US)
YANG YUNSONG (US)
Application Number:
PCT/US2023/029626
Publication Date:
February 22, 2024
Filing Date:
August 07, 2023
Export Citation:
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Assignee:
FUTUREWEI TECHNOLOGIES INC (US)
International Classes:
H04W36/00; H04W56/00; H04W74/00
Domestic Patent References:
WO2021139665A12021-07-15
Foreign References:
US20200029292A12020-01-23
US20220094508A12022-03-24
EP3911018A12021-11-17
Other References:
HUAWEI: "Corrections to Scheduling Information", 3GPP DRAFT; R2-083530, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Warsaw, Poland; 20080624, 24 June 2008 (2008-06-24), XP050140905
QUALCOMM INCORPORATED: "On RACH-less HO in NR", vol. RAN WG4, no. Reno, USA; 20190513 - 20190517, 13 May 2019 (2019-05-13), XP051733819, Retrieved from the Internet [retrieved on 20190513]
Attorney, Agent or Firm:
HE, Zhu (US)
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