Ranging Response Signal Resource Allocation Based on Received Power
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Solution Overview
Problem
Current public safety networks face technical gaps and inefficiencies in distance measurement between terminals, particularly in vehicle-to-vehicle (V2V) and vehicle-to-everything (V2X) communication, requiring more reliable and rapid distance measurement methods.
Innovation Solution
A method for transmitting ranging response signals in a wireless communication system, where the resource for transmission is determined based on the received power level of the ranging request signal, allowing for accurate and quick distance measurement by reducing collision and interference probabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed resource is used for transmitting ranging response signals, then resource allocation is simple, but collision and interference probabilities increase reducing measurement reliability
Solution Approach 1:
The patent applies dynamics by making the resource selection for ranging response signals adaptive rather than fixed. The terminal determines the resource based on the received power level of the ranging request signal, allowing the system to dynamically adjust resource allocation according to channel conditions and signal strength, thereby reducing collisions and interference while maintaining manageable complexity through predefined power-level-based rules
Solution Approach 2:
The patent changes the parameter used for resource determination from a fixed value to a variable based on received power level. By linking resource selection to the measured power level of the ranging request signal, the system adapts resource allocation to actual channel conditions, improving measurement reliability without requiring complex centralized scheduling
2Measurement precision
If traditional distance measurement methods are used in V2V/V2X communication, then implementation is straightforward, but distance measurement accuracy and speed are insufficient for public safety requirements
Solution Approach 1:
The patent applies preliminary action by having terminals pre-determine resource allocation rules based on received power levels before actual ranging operations. This allows for rapid distance measurement in V2V/V2X scenarios because the resource selection logic is already established, eliminating the need for complex real-time negotiations and reducing measurement delay while maintaining high accuracy through power-level-based resource differentiation
Data Source
AI summary
Provided are a method by which a terminal transmits a ranging response signal in a wireless communication system, and a terminal using the method. The method comprises: receiving a ranging request signal from another terminal; and transmitting a ranging response signal to the other terminal in response to the ranging request signal, wherein a resource for transmission of the ranging response signal is determined on the basis of a reception power level of the ranging request signal.