Invention Grant
- Patent Title: RLF handling during multi-connectivity handover
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Application No.: US17275830Application Date: 2019-09-23
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Publication No.: US11997546B2Publication Date: 2024-05-28
- Inventor: Candy Yiu , Yi Guo , Kyeongin Jeong , Oluwaseyi Omotere
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Kowert, Hood, Munyon, Rankin & Goetzel, P.C.
- International Application: PCT/US2019/052401 2019.09.23
- International Announcement: WO2020/068651A 2020.04.02
- Date entered country: 2021-03-12
- Main IPC: H04W36/00
- IPC: H04W36/00 ; H04W74/0833 ; H04W76/19

Abstract:
Techniques to configure a user equipment (UE) for radio link failure (RLF) handling during a multi-connectivity handover with a source base station (SBS) and a target base station (TBS) include encoding a measurement report for transmission to the SBS via a first communication link. The measurement report is triggered based on a measurement event configured by the SBS. RRC signaling is received from the SBS, the RRC signaling including a handover command in response to the measurement report. The handover command includes an indication for multi-connectivity support by the SBS and the TBS during the handover. A random access channel (RACH) procedure with the TBS is performed using a second communication link between the UE and the TBS. Radio link monitoring (RLM) on the first communication link and the second communication link is performed during the handover.
Information query