Wireless Positioning Timing Compensation for Mobile RS Senders
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Solution Overview
Problem
The existing positioning technologies in wireless communication systems, such as SL RTT, SL AOA, and SL AOD, face challenges due to the mobility of the sender of the SL PRS, leading to measurement errors and increased hardware complexity and cost, particularly in scenarios like V2X and industrial Internet of Things.
Innovation Solution
A unified positioning solution that adjusts the timing of UE sending a first RS resource, using a first message to generate location information by combining reception timing and time length, which includes SL PRS, to enhance positioning accuracy and reduce signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the sender of SL PRS is mobile, then positioning adaptability is improved, but measurement precision deteriorates due to timing adjustment errors
Solution Approach 1:
The patent applies preliminary action by having the network device pre-configure timing adjustment parameters and resource pool information before the mobile device performs positioning measurements. The mobile device uses these pre-configured parameters to compensate for timing adjustments made during mobility, thereby maintaining measurement precision while adapting to mobile scenarios.
Solution Approach 2:
The patent implements feedback mechanisms where the mobile device reports measurement results and timing adjustment information back to the network device. The network device uses this feedback to refine timing adjustment parameters and improve subsequent positioning measurements, resolving the contradiction between mobility adaptability and measurement precision.
2Device complexity
If traditional positioning feedback schemes are used for mobile senders, then device complexity is reduced, but positioning accuracy deteriorates
Solution Approach 1:
The patent applies dynamics by making the positioning feedback scheme adaptive to the mobility state of the sender. The system dynamically adjusts timing parameters and resource allocation based on whether the sender is mobile or fixed, thereby improving positioning accuracy without requiring complex hardware modifications. The feedback mechanism dynamically updates positioning information based on current timing adjustments.
3Adaptability or versatility
If timing adjustment is made for mobile RS sender, then positioning adaptability is improved, but signaling overhead increases
Solution Approach 1:
The patent extracts and separates timing adjustment parameters from the main positioning feedback messages. By isolating timing adjustment information into dedicated fields or separate signaling procedures, the system reduces the overhead embedded in general positioning messages while maintaining the necessary adaptability for mobile scenarios.
4Device complexity
If unified solution is used for mobile and fixed scenarios, then device complexity is reduced, but measurement precision may deteriorate
Solution Approach 1:
The patent uses parameter changes to adapt the unified positioning solution to different scenarios. By modifying timing parameters, resource allocation parameters, and measurement configuration parameters based on whether the sender is mobile or fixed, the system maintains a unified architectural framework while achieving scenario-specific measurement precision through parameter adjustment rather than structural complexity.
Data Source
AI summary
Disclosed in the present application are a method and apparatus used for positioning. The method comprises: a first node receiving a first message; executing first measurement in at least a first RS resource to obtain the reception timing of a first time unit; and sending first position information, wherein the first message indicates a first time length, and the reception timing of the first time unit and the first time length are jointly used for generating the first position information. The present application solves the effect of timing adjustment on position information estimation.