Sidelink Positioning Peer Selection via Capability Signaling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems, particularly in the context of 5G, face challenges in efficiently selecting and managing peer devices for sidelink positioning sessions, which is crucial for enhanced spectral efficiency and reduced latency in scenarios like vehicle-to-everything (V2X) communications.
Innovation Solution
A method and apparatus for selecting positioning peers in a sidelink positioning session, where user equipment (UE) devices exchange discovery, capability, and selection messages to determine suitable peers for participating in sidelink positioning, facilitated by network entities that authorize and manage peer participation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If peer selection procedures are implemented in sidelink positioning, then positioning accuracy and reliability are improved, but signaling overhead and procedure complexity increase
Solution Approach 1:
The patent applies preliminary action by having peer UEs broadcast their capability information in advance through discovery messages before the actual positioning session is established. This allows the target UE to pre-evaluate potential peers and make informed selection decisions without increasing real-time procedure complexity, thereby improving reliability while managing signaling overhead efficiently
2Productivity
If multiple capability messages are exchanged between peer UEs, then positioning performance is improved, but signaling overhead increases
Solution Approach 1:
The patent applies partial action by implementing a selective capability exchange mechanism where the target UE requests only the specific capability information needed for peer selection rather than requiring complete capability broadcasts from all peers. This is achieved through interest messages that specify required capabilities, reducing unnecessary signaling overhead while still gathering sufficient information to make informed peer selection decisions and improve positioning efficiency
Data Source
AI summary
In an aspect, a target user equipment (UE) receives discovery messages from peer UEs. Each discovery message indicates a subset of capabilities associated with a peer UE to participate in a sidelink positioning session. The target UE sends an interest message to the peer UEs indicating that the target UE intends to have the peer UEs participate in the sidelink positioning session and receives capability messages from the peer UEs indicating additional capabilities associated with each of the peer UEs. The target UE sends a selection message to at least one peer UE to participate in the sidelink positioning session based on the subset of capabilities and the additional capabilities associated with the at least one peer UE. The selection message requests the at least one peer UE participate in the sidelink positioning session with the target UE.