PRS Measurement Gap Alignment for Wireless Positioning
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Solution Overview
Problem
The existing PRS configuration in wireless communication systems is inflexible and leads to waste due to mismatched periodicities between Measurement Gaps (MGs) and Positioning Reference Signals (PRS), affecting PRS utilization efficiency and normal data transmission.
Innovation Solution
A method where a network device adjusts the MG configuration in response to changes in PRS configuration, optimizing PRS measurement efficiency by aligning MG patterns with PRS requirements, considering terminal device capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the periodicity of MG is much greater than the periodicity of PRS, then PRS measurement opportunities increase, but many PRS signals fall outside MG and cannot be measured, resulting in PRS waste
Solution Approach 1:
The patent applies dynamics by making the MG periodicity adjustable rather than fixed. The network device dynamically configures the MG periodicity based on the PRS periodicity and terminal device capabilities, allowing the system to adapt to different positioning requirements and avoid PRS waste while ensuring adequate measurement opportunities.
Solution Approach 2:
The patent changes the parameter of MG periodicity to match the PRS periodicity requirements. By configuring the MG periodicity to be equal to or a divisor of the PRS periodicity, the system ensures that PRS signals align with MG windows, eliminating PRS waste while maintaining measurement accuracy.
2Measurement precision
If the periodicity of MG is far smaller than the periodicity of PRS, then PRS measurement coverage improves, but too frequent MGs affect normal uplink and downlink data transmission
Solution Approach 1:
The patent optimizes the MG periodicity parameter to balance measurement coverage and data transmission. By setting the MG periodicity to be equal to or a divisor of the PRS periodicity, the system achieves adequate PRS measurement coverage while minimizing the frequency of MG interruptions to normal data transmission.
Solution Approach 2:
The patent maintains continuity of useful action by ensuring that MGs are configured only when necessary for PRS measurement. The network device determines whether to configure MG based on terminal device capabilities and positioning requirements, avoiding unnecessary MG interruptions to data transmission while ensuring continuous PRS measurement capability when needed.
3Device complexity
If PRS configuration is fixed, then system complexity is reduced, but it cannot be adjusted flexibly based on actual positioning requirements, causing PRS waste
Solution Approach 1:
The patent introduces dynamics to the PRS configuration system by enabling flexible adjustment of PRS periodicity, bandwidth, and transmission frequency based on actual positioning requirements. The network device configures these parameters dynamically according to terminal device capabilities and service requirements, reducing PRS waste while maintaining manageable system complexity through standardized configuration procedures.
Data Source
AI summary
Provided are a wireless communication method, a terminal device, and a network device. The method includes: transmitting, by a network device, first information to a terminal device in response to a PRS configuration being changed. The first information is used by the terminal device for determining an adjusted Measurement Gap (MG) related configuration.