Bandwidth Part Switching for 5G Positioning Reference Signals
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently configuring bandwidth parts (BWP) for communicating multiple reference signals for positioning, particularly in 5G networks, which affect data transfer speeds, connection capacity, and latency.
Innovation Solution
A method and system for dynamically switching between different BWP configurations to accommodate the communication of multiple reference signals, such as PRS and SRS-P, using explicit or implicit indications, allowing for simultaneous data traffic and positioning measurements without measurement gaps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single BWP configuration is used for both data traffic and positioning reference signals, then device complexity is reduced, but spectral efficiency deteriorates due to bandwidth mismatches
Solution Approach 1:
The patent segments the bandwidth part configuration into multiple BWPs with different bandwidths. A first BWP is used for data traffic while a second BWP with different bandwidth characteristics is used for positioning reference signals. This segmentation allows each BWP to be optimized for its specific function, resolving the contradiction between device complexity and spectral efficiency.
2Measurement precision
If measurement gaps are introduced for positioning measurements, then measurement precision is improved, but productivity deteriorates due to interrupted data traffic
Solution Approach 1:
The patent dynamically switches between different BWP configurations based on the active function. During positioning measurements, the system switches to the second BWP configuration optimized for reference signals. This dynamic adaptation eliminates the need for measurement gaps while maintaining measurement precision, as the BWP switch enables simultaneous data traffic and positioning measurements without interruption.
3Loss of energy
If BWP switching is implemented for positioning reference signals, then spectral efficiency is improved, but device complexity increases due to multiple configuration management
Solution Approach 1:
The patent creates a universal BWP configuration mechanism where the second BWP is designed to serve multiple positioning-related functions including PRS, SRS-P, and other positioning reference signals. This multi-functional design reduces the need for numerous separate configurations, thereby improving spectral efficiency while limiting the increase in device complexity through consolidated configuration management.
Data Source
AI summary
In an aspect, a UE and BS communicate data traffic in accordance with a first bandwidth part (BWP) configuration. The BS sends, to the UE in association with communication of a plurality of reference signals for positioning (e.g., PRS, SRS-P, etc.), an indication of a second BWP configuration that includes a different bandwidth than the first BWP configuration. The UE and BS communicate, for a duration of the communication of the plurality of reference signals for positioning, at least the plurality of reference signals for positioning in accordance with the second BWP configuration.