Sidelink Resource Region Selection for Collision-Energy Tradeoffs
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Solution Overview
Problem
Existing sidelink communication systems face a tradeoff between collision probability and power consumption due to the frequency of partial sensing or random selection operations, necessitating a method to balance these factors.
Innovation Solution
A method for selecting resource selection regions based on congestion levels, HARQ responses, cast types, and data priorities, with varying region sizes and probabilities of resource selection to optimize performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the number of times (or execution range) that the partial sensing operation or the random selection operation is performed increases, then the collision probability in sidelink communication decreases, but the power consumption in the terminal increases
Solution Approach 1:
The patent applies dynamics by making the resource selection region size adjustable based on congestion levels. When congestion is high, a larger resource selection region is used to reduce collisions; when congestion is low, a smaller region suffices, reducing power consumption. This dynamic adaptation resolves the contradiction between collision probability and power consumption.
Solution Approach 2:
The patent changes the parameter of resource selection region size based on congestion conditions. By varying this parameter according to network state, the system achieves lower collision probability when needed while consuming less power when conditions permit, thus resolving the technical contradiction.
2Reliability
If a larger resource selection region is used to reduce collision probability, then transmission reliability improves, but resource utilization efficiency decreases
Solution Approach 1:
The patent dynamically adjusts the resource selection region size based on real-time congestion levels. When congestion is high, a larger region is used to ensure reliable transmission; when congestion is low, a smaller region is used to maximize resource utilization efficiency. This dynamic approach resolves the contradiction between transmission reliability and resource utilization efficiency.
Solution Approach 2:
The patent varies the resource selection region size parameter according to congestion conditions. This parameter change allows the system to achieve high transmission reliability when necessary while maintaining high resource utilization efficiency under normal conditions, thus resolving the technical contradiction.
Data Source
AI summary
Disclosed are a method and device for resource selection in sidelink communication. An operation method of a first transmission terminal comprises the steps of: checking the congestion level in one or more measurement areas; selecting a first resource selection area from among a plurality of resource selection areas when the congestion level is at least a first reference value; selecting a transmission resource within the first resource selection area; and performing sidelink communication with a reception terminal by using the transmission resource.