Sidelink PRS Phase Shifting for Precise Wireless Positioning
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Solution Overview
Problem
Existing wireless communication systems face challenges in achieving high data rates, low latency, and reliable connectivity, especially in emerging technologies like 6G, which require advanced positioning methods for devices and vehicles.
Innovation Solution
The method involves using sidelink positioning reference signals (SL PRS) for devices to transmit and receive signals with phase shifts, enabling precise location determination and communication, incorporating AI for efficient resource allocation and interference management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If phase shift is applied to SL PRS for positioning, then positioning accuracy is improved, but device complexity increases
Solution Approach 1:
The patent applies phase shift parameter changes to SL PRS signals for positioning. By modifying the phase parameter of the reference signal, the system achieves improved positioning accuracy through phase-based measurements while managing device complexity through standardized implementation procedures.
2Reliability
If AI is used for resource allocation and interference management, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The patent implements feedback mechanisms where devices report channel state information and interference measurements to the network. The network then uses this feedback to optimize resource allocation and manage interference, improving communication reliability while distributing computational complexity between the device and network entities.
Data Source
AI summary
Proposed are a method for a first device to perform wireless communication and a device supporting same. For example, the first device may obtain information related to SL (sidelink) PRS (positioning reference signal), including at least one of information regarding SL PRS resource ID (identity), information regarding SL PRS comb offset, information regarding SL PRS comb size, information regarding SL PRS starting symbol, or information regarding number of SL PRS symbols. For example, the first device may receive a first SL PRS based on a first SL PRS resource. For example, the first device may transmit a second SL PRS with a phase shift applied, based on time gap from a starting resource of the first SL PRS resource to time the first SL PRS is received.