Sidelink Communication Assisted by On-Demand Nodes
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face challenges in providing efficient on-demand assistance for sidelink communication, especially in scenarios where direct line of sight is obstructed.
Innovation Solution
The proposed solution involves a method where a user equipment (UE) requests assistance from an assisting node (AN) configured by a base station, allowing the UE to communicate with another UE through sidelink communication assisted by the AN, using allocated resources granted by the base station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If sidelink communication is established directly between UEs, then communication speed and simplicity are improved, but reliability deteriorates when line of sight is obstructed
Solution Approach 1:
The patent introduces an assisting node (AN) as an intermediary device to relay sidelink communications between UEs when direct line of sight is obstructed. The AN receives signals from one UE and forwards them to the target UE, thereby maintaining communication reliability in non-line-of-sight conditions while preserving the simplicity of direct UE-to-UE communication when conditions permit.
2Reliability
If assisting nodes are deployed to overcome obstructions, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The assisting node is designed to autonomously perform signal reception, processing, and forwarding operations without requiring complex centralized control. The AN independently manages its own configuration and operation, reducing the overall system complexity while maintaining enhanced communication reliability through automatic obstacle overcoming capabilities.
3Adaptability or versatility
If on-demand assistance requests are implemented, then adaptability is improved, but signaling overhead increases
Solution Approach 1:
The system pre-configures assisting nodes and their associated parameters before actual communication needs arise. When a UE requires assistance, it can quickly activate pre-configured ANs without extensive real-time negotiation or signaling, thereby achieving high adaptability while minimizing the signaling overhead that would otherwise be required for dynamic configuration.
Data Source
AI summary
Method and apparatus for on demand assistance for sidelink communication. The apparatus receives, from a base station, an AN configuration for one or more ANs associated with the base station. The apparatus transmits, to the base station, an AR to request assistance with communication with a second UE from at least one AN associated with the base station. The apparatus receives, from the base station, a grant to schedule sidelink transmission with the second UE. The sidelink transmission with the second UE is assisted by at least one AN of the one or more ANs associated with the base station. The apparatus communicates via sidelink communication with the second UE, via the at least one AN, using allocated resources of the grant from the base station.