On-Demand Positioning Reference Signal Configuration for Wireless Networks
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Solution Overview
Problem
Current wireless communication systems, particularly those using new radio (NR) technology, face challenges in efficiently managing positioning procedures for user equipment (UE) due to limitations in resource utilization and latency, especially in high-bandwidth and millimeter-wave environments, which affect the accuracy and speed of UE positioning.
Innovation Solution
The implementation of on-demand positioning procedures, where user equipment (UE) can request specific parameters for positioning reference signals (PRS) from a location server, allowing for tailored resource allocation and reduced latency, enabling more efficient use of resources and improved positioning accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional periodic PRS transmission is used, then positioning coverage is maintained, but resource utilization is inefficient and latency increases
Solution Approach 1:
The patent implements on-demand PRS transmission where the location server receives positioning requests from UEs and triggers PRS transmission only when needed, replacing traditional periodic transmission. This allows the system to maintain positioning capability while eliminating unnecessary transmissions during periods when positioning is not required, thus reducing latency and improving resource utilization.
Solution Approach 2:
The patent enables UEs to autonomously initiate positioning requests to the location server based on their own positioning needs. This self-service mechanism allows UEs to request PRS transmissions independently without network-wide periodic scheduling, reducing unnecessary transmissions and improving both positioning speed and resource efficiency.
2Measurement precision
If customized PRS parameters are requested by UE, then positioning accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent allows each UE to request customized PRS parameters tailored to its specific positioning requirements, such as bandwidth, frequency, and time resources. This local customization enables optimal positioning accuracy for each UE without requiring all UEs to use the same parameters, thus improving measurement precision while managing signaling overhead through targeted customization.
Solution Approach 2:
The patent implements dynamic parameter adjustment where the location server modifies PRS transmission parameters based on UE requests and network conditions. Parameters such as bandwidth, frequency, and timing can be changed on-demand to optimize positioning accuracy for specific scenarios while adapting resource allocation to actual needs, thereby balancing accuracy improvement with overhead management.
Data Source
AI summary
Certain aspects of the present disclosure relate to methods and apparatus for on-demand positioning. For example a method may include transmitting a request to participate in a UE positioning procedure, wherein the request indicates one or more parameters to be used by a location server in coordinating one or more base stations (BSs) to participate in the UE positioning procedure, and receiving signaling from the location server configuring the UE to participate in the UE positioning procedure.