Sidelink Resource Negotiation to Reduce Terminal Collisions
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Solution Overview
Problem
Current sidelink communication resource allocation mode 2 leads to increased interference and reduced reliability due to terminal devices autonomously selecting resources, causing collisions and intra-system interference.
Innovation Solution
A resource negotiation method where terminal devices exchange information to agree on conceding parts of their resources, reducing the probability of collisions and improving communication reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If terminal devices autonomously select resources in mode 2, then resource allocation flexibility is improved, but resource collision probability increases and communication reliability deteriorates
Solution Approach 1:
The patent introduces a resource negotiation mechanism where terminal devices act as intermediaries to coordinate resource selection. Instead of completely autonomous selection, devices exchange resource status information and negotiate to avoid collisions, maintaining flexibility while improving reliability through cooperative decision-making
Solution Approach 2:
The patent implements feedback loops where terminal devices monitor resource usage status, detect potential collisions, and adjust their resource selection based on feedback from other devices. This continuous feedback mechanism enables dynamic resource allocation that adapts to changing conditions while avoiding conflicts
2Quantity of substance
If terminal devices increase interference measurement threshold to find more candidate resources, then resource selection capacity is improved, but intra-system interference increases and reliability deteriorates
Solution Approach 1:
The patent dynamically adjusts the interference measurement threshold based on current system conditions and resource availability. Instead of using a fixed high threshold that causes interference, the threshold is adapted in real-time to balance candidate resource quantity with interference levels, resolving the contradiction between finding enough resources and avoiding harmful interference
3Speed
If terminal devices autonomously contend for transmission resources, then resource allocation speed is improved, but resource collision probability increases
Solution Approach 1:
The patent implements preliminary resource negotiation and coordination before actual transmission begins. Terminal devices exchange information about their intended resource usage in advance, allowing them to resolve potential conflicts before they occur. This preliminary action maintains fast allocation while preventing collisions
Data Source
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AI summary
This application provides a resource negotiation method and apparatus for sidelink communication. The method includes: A first terminal device receives first information from a second terminal device, where the first information is used to request the first terminal device to concede a part of a first resource of the first terminal device; and the first terminal device sends second information to the second terminal device, where the second information indicates that the first terminal device agrees to concede a part of the first resource for the second terminal device. Therefore, communication reliability is improved.