Sidelink Resource Configuration via Terminal Feedback
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Solution Overview
Problem
In sidelink communication, autonomous resource selection by terminals can lead to interference due to coincident resource usage, as each terminal independently selects resources without coordinating with others.
Innovation Solution
A method where a first sidelink terminal generates resource sensing indication information and transmits it to a second sidelink terminal, instructing it to perform resource sensing and return the results, allowing the first terminal to select a sidelink resource based on the second terminal's resource sensing result, thereby coordinating resource usage to avoid interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If terminals autonomously select sidelink resources from a resource pool, then resource selection flexibility is improved, but resource collision and interference occur
Solution Approach 1:
The patent implements a feedback mechanism where the first terminal sends resource sensing indication information to the second terminal, which then performs resource sensing and returns the sensing result to the first terminal. This feedback loop enables the first terminal to make informed resource selection decisions based on actual channel conditions and other terminal activities, thereby reducing resource collisions while maintaining selection flexibility.
Solution Approach 2:
The patent applies preliminary action by having the second terminal perform resource sensing before the first terminal makes its final resource selection. The resource sensing indication information is sent in advance, and the sensing result is obtained before resource allocation, allowing the system to proactively identify and avoid potential resource conflicts before they occur.
2Device complexity
If terminals independently select resources without coordination, then device complexity is reduced, but resource configuration accuracy deteriorates
Solution Approach 1:
The patent introduces resource sensing indication information and resource sensing results as intermediary elements between terminals. These intermediaries carry channel state information and resource availability data, enabling accurate resource configuration decisions without requiring complex direct coordination protocols between terminals. The intermediary mechanism maintains terminal operation simplicity while significantly improving resource configuration accuracy.
3Ease of operation
If autonomous resource selection is used, then ease of operation is improved, but resource utilization efficiency worsens due to interference
Solution Approach 1:
The feedback mechanism through resource sensing indication information and sensing results enables terminals to make smarter autonomous decisions. The first terminal uses the sensing result from the second terminal to select resources that are less likely to cause interference, thereby improving resource utilization efficiency while maintaining the ease of autonomous operation. The feedback provides the necessary information for efficient resource selection without adding operational complexity.
Data Source
AI summary
Methods and apparatuses for configuring sidelink resource are provided. A method includes that a first sidelink terminal: generates resource sensing indication information; transmits the resource sensing indication information to a second sidelink terminal, where the resource sensing indication information instructs the second sidelink terminal to perform resource sensing according to the resource sensing indication information and return an obtained resource sensing result to the first sidelink terminal; receives the resource sensing result returned by the second sidelink terminal; and selects a sidelink resource for sidelink communication according to the resource sensing result.