Sidelink Positioning Reference Signals With Phase-Shifted Timing
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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 implementation of sidelink positioning reference signals (SL PRS) for devices to transmit and receive signals with phase shifts, enabling precise location determination and communication, including SL PRS resource management and phase shift application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional wireless communication systems are used, then basic communication functionality is provided, but positioning accuracy and communication reliability for high-speed mobile devices and vehicles are insufficient
Solution Approach 1:
The patent segments the positioning function by introducing dedicated SL PRS resources separate from traditional communication resources. The sidelink positioning reference signals are transmitted on dedicated time-frequency resources, allowing independent optimization for positioning accuracy without compromising general communication reliability.
Solution Approach 2:
The patent applies parameter changes by configuring multiple SL PRS resources with different time gaps and phase shifts. These parameter variations enable the system to achieve both high positioning accuracy and communication reliability by creating diverse signal characteristics that improve measurement precision while maintaining robust communication.
2Measurement precision
If SL PRS resources are added for positioning, then positioning accuracy is improved, but device complexity increases
Solution Approach 1:
The patent implements universality by enabling SL PRS resources to serve multiple functions: positioning reference signals, communication reference signals, and synchronization signals. This multi-functionality reduces device complexity by consolidating multiple signal types into a unified resource management framework, avoiding the need for separate dedicated resources for each function.
Data Source
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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.