Title:
SYSTEMS, METHODS, AND DEVICES FOR MAC HANDLING OF mTRPs FOR INTER-DU, INTRA-CU MOBILITY OF UE
Document Type and Number:
WIPO Patent Application WO/2024/000171
Kind Code:
A1
Abstract:
Techniques, described herein, include solutions for handling multiple transmission and reception points (mTRPs) for inter-distributed unit (DU), intra-centralized unit (CU) mobility of user equipment (UE). DUs may each implement a media access control (MAC) layer, and a CU may add a new DU by configuring the DU to implement an instance of a hybrid automatic repeat request (HARQ) entity operating on an existing DU. HARQ processes associated with each DU may be the same or different and the UE may be configured accordingly. The UE may use the same MAC entity to communicate with each DU. In some implementations, HARQ entities of DUs may be associated with mTRP IDs. Alternatively, a new MAC and/or RLC layer may be implemented in the new DU and the UE may be configuredaccordingly. RLC layers may be radio bearer (RB) or logical channel specific.
Inventors:
XU FANGLI (CN)
PALLE VENKATA NAVEEN KUMAR R (US)
HU HAIJING (US)
BREINING BIRGIT (DE)
CHEN YUQIN (CN)
LOVLEKAR SRIRANG A (US)
ROSSBACH RALF (DE)
SIROTKIN ALEXANDER (IL)
WU ZHIBIN (US)
NUGGEHALLI PAVAN (US)
GURUMOORTHY SETHURAMAN (US)
PALLE VENKATA NAVEEN KUMAR R (US)
HU HAIJING (US)
BREINING BIRGIT (DE)
CHEN YUQIN (CN)
LOVLEKAR SRIRANG A (US)
ROSSBACH RALF (DE)
SIROTKIN ALEXANDER (IL)
WU ZHIBIN (US)
NUGGEHALLI PAVAN (US)
GURUMOORTHY SETHURAMAN (US)
Application Number:
PCT/CN2022/101969
Publication Date:
January 04, 2024
Filing Date:
June 28, 2022
Export Citation:
Assignee:
APPLE INC (US)
XU FANGLI (CN)
XU FANGLI (CN)
International Classes:
H04L1/18; H04W36/00
Foreign References:
| US9351201B2 | 2016-05-24 |
Other References:
HUAWEI ET AL: "Mobility enhancements under CU-DU architecture", vol. RAN WG2, no. Prague, Czech Republic; 20190826 - 20190830, 16 August 2019 (2019-08-16), XP051768377, Retrieved from the Internet [retrieved on 20190816]
ZTE: "Inter-DU Mobility and Intra-DU Mobility for TS38.401", vol. RAN WG3, no. Berlin, Germany; 20170821 - 20170825, 21 August 2017 (2017-08-21), XP051319763, Retrieved from the Internet
CATT: "Discussion on support of multi-connectivity for option 2 and option 3-1", vol. RAN WG3, no. Spokane, Wa; 20160117 - 20160119, 12 January 2017 (2017-01-12), XP051212866, Retrieved from the Internet
ZTE CORPORATION: "Consideration on the intra-NR Dual connectivity", vol. RAN WG2, no. Prague, Czech Republic; 20171009 - 20171013, 8 October 2017 (2017-10-08), XP051342381, Retrieved from the Internet
ZTE: "Discussion on Inter-DU Mobility with Dual Connectivity", vol. RAN WG3, no. Sophia Antipolis, France; 20180122 - 20180126, 12 January 2018 (2018-01-12), XP051387175, Retrieved from the Internet
HUAWEI ET AL: "DC based scheme for 0ms interruption handover", vol. RAN WG2, no. Athens, Greece; 20190225 - 20190301, 15 February 2019 (2019-02-15), XP051602082, Retrieved from the Internet [retrieved on 20190215]
APPLE INC: "NR URLLC enhancement for cell edge UE", vol. RAN WG1, no. Prague, CZ; 20190826 - 20190830, 17 August 2019 (2019-08-17), XP051765661, Retrieved from the Internet [retrieved on 20190817]
ZTE: "Inter-DU Mobility and Intra-DU Mobility for TS38.401", vol. RAN WG3, no. Berlin, Germany; 20170821 - 20170825, 21 August 2017 (2017-08-21), XP051319763, Retrieved from the Internet
CATT: "Discussion on support of multi-connectivity for option 2 and option 3-1", vol. RAN WG3, no. Spokane, Wa; 20160117 - 20160119, 12 January 2017 (2017-01-12), XP051212866, Retrieved from the Internet
ZTE CORPORATION: "Consideration on the intra-NR Dual connectivity", vol. RAN WG2, no. Prague, Czech Republic; 20171009 - 20171013, 8 October 2017 (2017-10-08), XP051342381, Retrieved from the Internet
ZTE: "Discussion on Inter-DU Mobility with Dual Connectivity", vol. RAN WG3, no. Sophia Antipolis, France; 20180122 - 20180126, 12 January 2018 (2018-01-12), XP051387175, Retrieved from the Internet
HUAWEI ET AL: "DC based scheme for 0ms interruption handover", vol. RAN WG2, no. Athens, Greece; 20190225 - 20190301, 15 February 2019 (2019-02-15), XP051602082, Retrieved from the Internet
APPLE INC: "NR URLLC enhancement for cell edge UE", vol. RAN WG1, no. Prague, CZ; 20190826 - 20190830, 17 August 2019 (2019-08-17), XP051765661, Retrieved from the Internet
Attorney, Agent or Firm:
KING & WOOD MALLESONS (CN)
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