Invention Grant
- Patent Title: Signaling to child nodes for backhaul beam failure in fifth generation (5G) new radio (NR) (5G-NR) integrated access and backhaul (IAB)
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Application No.: US17276947Application Date: 2019-09-20
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Publication No.: US12063089B2Publication Date: 2024-08-13
- Inventor: Lili Wei , Qian Li , Dawei Ying , Hassan Ghozlan , Geng Wu
- Applicant: APPLE INC.
- Applicant Address: US CA Cupertino
- Assignee: APPLE INC.
- Current Assignee: APPLE INC.
- Current Assignee Address: US CA Cupertino
- Agency: Dorsey & Whitney LLP
- International Application: PCT/US2019/052271 2019.09.20
- International Announcement: WO2020/061527A 2020.03.26
- Date entered country: 2021-03-17
- Main IPC: H04B7/06
- IPC: H04B7/06 ; H04L5/00 ; H04W76/19 ; H04W88/14

Abstract:
Technology is disclosed for a relay node (RN) operable for backhaul beam failure recovery (BFR) in a fifth generation (5G) new radio (NR) integrated access and backhaul (IAB) network. The relay node can be configured to: decode a periodic reference signal for beam failure instance detection received from a donor node (DN); identify abeam failure between the RN and the DN, wherein the beam failure occurs when N beam failure instances are identified, wherein N is a positive integer; identify whether a candidate beam of one or more candidate beams at the RN has a reference signal greater than a threshold; prepare a BFR request; and encode the BFR request.
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