Invention Grant
- Patent Title: Beam failure recovery method, device, and apparatus
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Application No.: US16960321Application Date: 2018-12-18
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Publication No.: US11109247B2Publication Date: 2021-08-31
- Inventor: Li Chen
- Applicant: China Academy of Telecommunications Technology
- Applicant Address: CN Beijing
- Assignee: China Academy of Telecommunications Technology
- Current Assignee: China Academy of Telecommunications Technology
- Current Assignee Address: CN Beijing
- Agency: Kilpatrick Townsend & Stockton LLP
- Priority: CN201810015242.6 20180108
- International Application: PCT/CN2018/121852 WO 20181218
- International Announcement: WO2019/134506 WO 20190711
- Main IPC: H04W74/08
- IPC: H04W74/08 ; H04W48/08 ; H04W24/04 ; H04L5/00 ; H04W24/08 ; H04W72/04

Abstract:
Disclosed are a beam failure recovery method, device, and apparatus, comprising: a terminal determining that performing beam failure recovery is required; and the terminal initiating random access to perform the beam failure recovery on a selected bandwidth part, and the bandwidth part is not changed in the random access process. By adopting the present disclosure, a terminal configuring each bandwidth part will not cause a disorderly beam failure recovery process. The terminal can select an appropriate bandwidth part and a synchronization signal block or channel state information reference signal thereon to initiate the beam failure recovery process. The disclosure achieves fast beam recovery while minimizing impact on data transmission. Further, a base station is also for determining how the terminal performs the beam failure recovery, to make a timely response, to ensure effective transmission of data without wasting random access resources.
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