Wireless Positioning Using Combined Downlink and Sidelink PRS
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Solution Overview
Problem
Existing wireless communication systems face challenges in achieving accurate positioning, particularly in scenarios with mobile senders of wireless signals, and integrating cellular and sidelink positioning reference signals to enhance accuracy and reduce hardware complexity.
Innovation Solution
A method that combines downlink and sidelink positioning reference signals for improved positioning accuracy, ensuring synchronized transmission timings and resource associations to minimize interference and optimize signal utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional positioning process is used with mobile sender of SL PRS, then positioning can be performed, but positioning accuracy deteriorates due to mobility effects
Solution Approach 1:
The patent combines downlink PRS and sidelink PRS into a unified positioning framework. The location management network element configures both downlink PRS resources and sidelink PRS resources, allowing the terminal to measure both signal types and generate positioning information that leverages the complementary strengths of both signaling methods to maintain accuracy despite sender mobility.
2Ease of manufacture
If separate positioning schemes are used for cellular link and sidelink, then each can be optimized independently, but device complexity increases
Solution Approach 1:
The patent creates a universal positioning configuration framework where the location management network element manages both downlink and sidelink PRS through unified procedures. The terminal device uses a single positioning information generation process that handles both signal types, reducing implementation complexity while maintaining the flexibility to adapt to different positioning scenarios and mobility conditions.
Data Source
AI summary
The present application discloses a method and apparatus for wireless communication. A node firstly receives a first information block set, receives a first reference signal via a sidelink, and receives a second reference signal via a downlink; and then the node sends first position information. The first information block set is used for determining the second reference signal. The reception of the first reference signal and the reception of the second reference signal are jointly used for determining the first position information. According to the present application, for positioning requirements on the sidelink, transmission of a positioning reference signal on the sidelink and a method for acquiring the position information are improved, and a positioning reference signal on a cellular link is also used for positioning on the sidelink, such that the positioning precision is improved, and the overall performance of a system is improved.