Sidelink-Assisted Positioning via S-LMF
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Solution Overview
Problem
Current wireless communication systems face challenges in accurately determining the position of user equipment (UE) without relying on base stations, especially in scenarios where direct measurements from UEs and base stations may have accuracy limitations and require significant computational resources.
Innovation Solution
The implementation of sidelink-assisted positioning using a sidelink location management function (S-LMF) and multiple UEs, where UEs communicate via sidelink channels to share positioning measurements, allowing the S-LMF to determine the position based on multiple perspectives, reducing the computational burden on individual UEs and improving accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If direct measurements from UEs and base stations are used for positioning, then positioning can be determined without centralized computation, but positioning accuracy is limited and computational resources are significantly consumed
Solution Approach 1:
The patent introduces a sidelink location management function (S-LMF) as an intermediary entity that receives positioning measurements from multiple UEs and performs the computational tasks of determining position. This mediator approach transfers the computational burden from individual UEs to the S-LMF, reducing device complexity while maintaining or improving positioning accuracy through centralized processing of multiple measurement perspectives
2Measurement precision
If centralized computation is used for positioning determination, then positioning accuracy can be improved through multiple perspectives, but reliance on base stations increases and computational resources are concentrated
Solution Approach 1:
The S-LMF acts as a specialized intermediary that operates within the sidelink architecture, enabling centralized computation without requiring traditional base station infrastructure. This allows the system to leverage multiple UE perspectives for improved accuracy while maintaining adaptability to decentralized wireless communication environments
Solution Approach 2:
The S-LMF provides universal positioning determination functionality that can serve multiple UEs simultaneously through sidelink communications. This multi-functional approach allows a single entity to perform positioning calculations for various UEs, reducing overall system reliance on base stations while maintaining centralized computational benefits
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to another UE, a positioning request associated with a procedure for determining a position of the UE, wherein the positioning request comprises a sidelink communication between a first sidelink location management component (S-LMC) of the UE and a second S-LMC of the other UE, wherein the first S-LMC and the second S-LMC comprise sub-functions associated with a vehicle-to-everything protocol layer; and receive a positioning report associated with the procedure for determining the position of the UE, wherein the positioning report comprises an indication of the position of the UE based at least in part on a determination by a sidelink location management function. Numerous other aspects are provided.