Feedback Sequence Resource Allocation for V2X Collision Reduction
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Solution Overview
Problem
In vehicle wireless communication technology (V2X), there is a high probability of collision when multiple feedback terminals send feedback sequences on the same one or the same two symbols due to varying receiving powers and lack of power-control mechanisms, making it difficult for receiving terminals to interpret feedback sequences accurately.
Innovation Solution
A method and apparatus that determine physical-resource locations for feedback terminals based on their feedback characteristics, such as distance and sequence length, to group and allocate unique resource information, reducing collisions by ensuring distinct time and frequency domain positions for different groups of terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple feedback terminals send feedback sequences on the same one or the same two symbols, then the resource utilization is improved, but the probability of collision increases and receiving accuracy deteriorates
Solution Approach 1:
The patent segments the feedback transmission resources by dividing feedback terminals into different groups based on their feedback characteristics (such as distance from receiving terminal and feedback sequence length). Each group is assigned dedicated physical resource locations (time-frequency resources), thereby segmenting the originally shared resources into group-specific resources. This segmentation reduces collisions while maintaining efficient resource utilization.
2Device complexity
If feedback terminals use the same physical resource locations, then the system complexity is reduced, but the interpretability of feedback sequences deteriorates due to power variations and collisions
Solution Approach 1:
The patent applies local quality by assigning different physical resource locations to different groups of feedback terminals based on their specific characteristics. Instead of a uniform allocation, each group receives resources tailored to its needs (e.g., terminals at different distances get different resources). This localized resource allocation improves feedback interpretability by reducing power variations and collisions, while the overall system complexity remains manageable through automated group-based assignment.
Data Source
AI summary
The present disclosure relates to the field of communication, and provided therein are a feedback sequence transmission method. The method comprises: determining, by a receiving terminal, a physical-resource location adopted by a feedback terminal when the feedback terminal sends the feedback sequence, based on a feedback characteristic of the feedback terminal; and receiving, by the receiving terminal, the feedback sequence at the physical-resource location corresponding to the feedback terminal.