Systems and methods for providing system information via UE-to-network relay

US12177925B2 · kind B2 · utility

Assignee

• Apple Inc. · US

Inventors

• Zhibin Wu · Los Altos, US
• Fangli Xu · Beijing, CN
• Birgit Breining · Munich, DE
• Dawei Zhang · Saratoga, US
• Haijing Hu · Cupertino, US
• Longda Xing · San Jose, US
• Sethuraman Gurumoorthy · San Jose, US
• Srirang A. Lovlekar · Cupertino, US
• Yuqin Chen · Lo Wu, CN

Key dates

• Filing date: Apr 13, 2021
• Grant date: Dec 24, 2024
• Expiry date: Oct 28, 2042

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04W92/18
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

Systems, apparatus and methods enable layer 2 (L2) relaying optimizations for a remote user equipment (UE) to receive system information (SI) from a relay UE. The relay UE may establish a sidelink communication channel with the remote UE that is in a radio resource control (RRC) idle state, an RRC inactive state, or an out-of-coverage (OOC) state with respect to the base station. The relay UE decodes a relay SI request received through the sidelink communication channel from the first remote UE. The relay SI request indicates requested system information. The Relay UE obtains the requested system information or a subset of the requested system information from a memory device or from the base station and encodes a relay SI response to send to the first remote UE. The relay SI response includes the requested system information or the subset of the requested system information.