PRS Processing Gap for Low Latency Positioning in 5G
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Solution Overview
Problem
Current wireless communication systems face challenges in achieving low latency positioning measurements due to the prioritization of other downlink signals and channels over positioning reference signal (PRS) processing, which hinders accurate and timely location determination in 5G networks.
Innovation Solution
A method and system that allow user equipment (UE) to prioritize PRS processing by allocating a PRS processing gap, where UE can focus on processing PRS resources without interference from other downlink signals and channels, enabling efficient measurement and reporting of positioning data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE prioritizes other downlink signals and channels over PRS processing, then the reception and processing of downlink signals is maintained, but the positioning measurement accuracy and speed deteriorates
Solution Approach 1:
The patent segments the UE's processing time into distinct intervals: PRS processing gaps where positioning measurements are performed, and other time intervals for downlink signal reception. This segmentation allows the UE to dedicate specific time resources to positioning measurements without permanently sacrificing downlink signal reception, thereby resolving the contradiction between maintaining reliable downlink signal reception and achieving accurate positioning measurements.
2Productivity
If the UE prioritizes other downlink signals and channels over PRS processing, then the downlink communication is maintained, but the positioning measurement speed deteriorates
Solution Approach 1:
The patent implements periodic PRS processing gaps at predetermined intervals within the positioning measurement opportunity window. This periodic structure allows the UE to regularly perform positioning measurements while maintaining downlink communication during non-gap periods, thereby balancing positioning measurement speed with downlink communication throughput.
3Measurement precision
If the UE allocates time for PRS processing, then the positioning measurement accuracy improves, but the time available for downlink signal reception decreases
Solution Approach 1:
The patent configures PRS processing gaps to occur at specific predetermined times within the positioning measurement opportunity window, allowing the network to plan and allocate resources in advance. This preliminary configuration enables the UE to know exactly when positioning measurements will occur, optimizing both positioning accuracy and downlink signal reception scheduling without unexpected time losses.
Data Source
AI summary
Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) measures one or more positioning reference signal (PRS) resources of at least one PRS instance, and processes the one or more PRS resources of the at least one PRS instance during a PRS processing gap, wherein the PRS processing gap comprises a period of time during which the UE prioritizes PRS processing over reception, processing, or both of other downlink signals and channels.