Anchor UE Selection for Reliable Sidelink Positioning
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Solution Overview
Problem
There is a need for an efficient method to determine an anchor user equipment (UE) for sidelink positioning in wireless communication systems, particularly in next-generation wireless access technologies like New Radio (NR), to support enhanced mobile broadband communication, massive machine type communication, and ultra-reliable and low latency communication.
Innovation Solution
A method and apparatus for determining an anchor UE in a wireless communication system involves transmitting a request for UE capability information related to sidelink positioning to candidate UEs, receiving location-related information, and selecting the anchor UE based on this information, which includes location, location error, source, and integrity information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE capability information and location information are exchanged among candidate UEs to determine an anchor UE for sidelink positioning, then positioning accuracy and reliability are improved, but communication overhead and time consumption increase
Solution Approach 1:
The network side performs preliminary actions by pre-configuring anchor UE selection criteria and pre-establishing capability information templates. This allows UEs to quickly exchange and process information without needing to negotiate all parameters in real-time, thus reducing the time required for anchor UE determination while maintaining positioning reliability.
Solution Approach 2:
The patent extracts only the essential UE capability information and location information needed for anchor UE selection, filtering out unnecessary data exchange. By taking out only the critical parameters (such as location accuracy, capability flags, and relevant location information), the system reduces communication overhead and time consumption while still achieving reliable positioning.
2Measurement precision
If comprehensive UE capability information and location information are collected from candidate UEs, then positioning accuracy is improved, but device complexity and processing burden increase
Solution Approach 1:
The patent applies local quality by tailoring the information collection process to local needs. Each UE only collects and processes the specific capability information and location data relevant to its local positioning requirements, rather than processing all possible parameters. This reduces processing complexity while maintaining positioning accuracy for the specific application scenario.
Solution Approach 2:
The system uses partial action by collecting only the necessary UE capability information and location information required for anchor UE selection, rather than gathering all possible data. This partial information collection approach reduces processing complexity and device burden while still achieving sufficient positioning accuracy for the application.
Data Source
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AI summary
The present disclosure relates to a method for a user equipment (UE) to perform sidelink positioning in a wireless communication system. Specifically, the method comprises the steps of: transmitting, to at least one candidate UE, a request message requesting UE capability information related to the selection of an anchor UE for sidelink positioning; and receiving the UE capability information from the at least one candidate UE, wherein the UE capability information includes information related to the location of the at least one candidate UE, and the anchor UE is determined from among the at least one candidate UE on the basis of the UE capability information.