SRS Frequency Overlap Configuration for Accurate 5G Positioning
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Solution Overview
Problem
Existing wireless communication systems face challenges in accurately configuring frequency hopping characteristics for positioning reference signals, which affects the precision of 5G-based positioning.
Innovation Solution
A method is introduced where a location server requests and receives frequency domain overlap parameters for uplink and sidelink positioning reference signals, enabling accurate configuration and measurement by base stations and UEs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If frequency hopping characteristics are configured for positioning reference signals, then positioning accuracy is improved, but configuration complexity increases
Solution Approach 1:
The patent applies parameter changes by introducing specific frequency hopping characteristics (frequency domain overlap parameters, hopping patterns, and timing configurations) to positioning reference signals. These parameter modifications enable the system to achieve higher positioning accuracy through frequency diversity while maintaining manageable configuration complexity through standardized parameter sets and automated negotiation procedures.
Solution Approach 2:
The patent implements feedback mechanisms where base stations and UEs exchange information about supported frequency hopping characteristics and measurement results. This feedback loop allows the system to optimize positioning accuracy by selecting appropriate frequency hopping configurations based on channel conditions and measurement performance, while avoiding unnecessary configuration complexity through iterative refinement.
2Measurement precision
If frequency domain overlap parameters are negotiated between location server and base station, then positioning measurement accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent applies preliminary action by having the location server and base station negotiate and configure frequency domain overlap parameters before actual positioning measurements begin. This advance configuration ensures that all necessary parameters are established beforehand, improving measurement accuracy while reducing real-time signaling overhead by avoiding repeated negotiations during the measurement process.
Solution Approach 2:
The patent implements universality by designing the frequency domain overlap parameter configuration to serve multiple purposes: it enables accurate positioning measurements, provides frequency diversity for robustness against interference, and establishes a standardized negotiation framework that can be applied across different deployment scenarios, thereby reducing overall signaling overhead through reuse of the same configuration mechanisms.
3Measurement precision
If frequency hopping characteristics are aligned between transmitting and receiving UEs, then sidelink positioning precision is improved, but coordination complexity increases
Solution Approach 1:
The patent applies merging by combining the frequency hopping characteristic configurations of transmitting and receiving UEs through automated negotiation and alignment procedures. This ensures that both UEs use compatible frequency hopping patterns, timing, and overlap parameters, thereby improving sidelink positioning precision while reducing coordination complexity through standardized alignment mechanisms that eliminate manual configuration efforts.
Data Source
AI summary
Disclosed are techniques for communication. In an aspect, a location server transmits, to a base station serving a user equipment (UE), a request for one or more transmission frequency hopping characteristics of an uplink positioning reference signal (UL-PRS) to be transmitted by the UE during a positioning session, the one or more transmission frequency hopping characteristics including at least a frequency domain overlap parameter for frequency domain hops of the UL-PRS, and receives, from the base station, a response indicating an acceptance of the one or more transmission frequency hopping characteristics or modified values of the one or more transmission frequency hopping characteristics.