Sidelink Communication Range Determination in NR V2X
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Solution Overview
Problem
In wireless communication systems, particularly in V2X communication, there is a need to efficiently determine whether a receiving UE is within the minimum required communication range (MCR) of a transmitting UE, especially for groupcast or service communication with MCR requirements.
Innovation Solution
A method and apparatus for a first device to perform wireless communication by receiving location information and identifier information from a second device, obtaining sidelink control information, and determining whether it is within the MCR based on the service-related MCR and distance information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If location information and distance calculation methods are implemented to determine MCR compliance, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by having the transmitting UE pre-calculate the distance to the receiving UE using location information before determining MCR compliance. This allows the receiving UE to efficiently check compliance without performing complex real-time calculations, thus improving communication reliability while minimizing device complexity
Solution Approach 2:
The patent uses location information as an intermediary element to enable distance calculation and MCR determination. Instead of direct complex signal analysis, the system mediates through location data exchange and calculation, simplifying the overall process while ensuring reliable communication range verification
2Measurement precision
If distance information is obtained and processed to determine MCR compliance, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The transmitting UE performs distance calculation using location information in advance, before the receiving UE needs to make MCR compliance decisions. This preliminary calculation provides precise distance information quickly, improving measurement precision while reducing the time burden on the receiving UE
Solution Approach 2:
The patent uses location information as a copy or representation of the actual physical distance. Instead of direct physical measurement, the system uses calculated distance based on location data, which provides sufficient precision for MCR determination while being much faster and more efficient
Data Source
AI summary
Provided are a method for a first apparatus for communicating wirelessly and an apparatus supporting the method. The method comprises the steps of: receiving a message, from a second apparatus, comprising second apparatus location data and second apparatus identifier-related data; receiving, from the second apparatus, sidelink control information (SCI) comprising the second apparatus identifier-related data; acquiring distance data for the distance between the first apparatus and second apparatus on the basis of location data thereof; and determining whether the first apparatus and second apparatus are within the minimum required communication range (MCR) on the basis of distance data and MCR of the SCI-related service.