Invention Grant
- Patent Title: Random access channel procedures with external assistance
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Application No.: US17776640Application Date: 2019-11-14
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Publication No.: US12137476B2Publication Date: 2024-11-05
- Inventor: Qiaoyu Li , Chao Wei , Hao Xu , Huilin Xu , Jing Lei , Peter Pui Lok Ang , Wanshi Chen , Le Liu , Yiqing Cao , Peter Gaal
- Applicant: Qualcomm Incorporated
- Applicant Address: US CA San Diego
- Assignee: Qualcomm Incorporated
- Current Assignee: Qualcomm Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Holland & Hart LLP
- International Application: PCT/CN2019/118320 WO 20191114
- International Announcement: WO2021/092828 WO 20210520
- Main IPC: H04W74/04
- IPC: H04W74/04 ; H04W74/00 ; H04W74/0833

Abstract:
A low complexity user equipment (UE) may be in communication with another UE (e.g., with a premium UE or more capable UE) via a device-to-device communication link (e.g., via sidelink), and the low complexity UE may leverage the device-to-device link to improve (e.g., simplify, expedite, etc.) random access procedures performed by the low complexity UE. For example, a low complexity UE may request contention free random access (CFRA) resources via the device-to-device link with another UE. Another device (e.g., another UE in device-to-device communication with the low complexity UE) may receive the request from the low complexity UE and forward the request to the network (e.g., to a base station). The network may then configure CFRA resources for the low complexity UE. Upon receiving the CFRA configuration, the low complexity UE may perform a random access procedure (e.g., a CFRA procedure) with the network (e.g., with the base station) accordingly.
Public/Granted literature
- US20220400513A1 RANDOM ACCESS CHANNEL PROCEDURES WITH EXTERNAL ASSISTANCE Public/Granted day:2022-12-15
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