Sidelink Resource Reselection After Consecutive Collision Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing Mode 2 resource selection mechanism in sidelink communication systems leads to consecutive resource collisions among user devices, resulting in degraded communication reliability due to overlapping or partially overlapping resource selections in multiple transmission periods.
Innovation Solution
Implement a communication method where user devices detect consecutive resource collisions by monitoring transmission failures and stop data transmission using the reserved resource if a predetermined number of failures occurs, and perform resource reselection to avoid further collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If Mode 2 resource selection mechanism is used for sidelink communication, then resource allocation flexibility is improved, but consecutive resource collisions occur leading to degradation of communication reliability
Solution Approach 1:
The patent implements a feedback mechanism where user equipment monitors transmission success/failure on reserved resources and reports collision information to the network. The network device receives this feedback and adjusts resource allocation accordingly, preventing consecutive collisions while maintaining Mode 2 flexibility. This resolves the contradiction by adding a control loop that adapts resource allocation based on actual transmission outcomes.
Solution Approach 2:
The patent performs preliminary resource reservation and collision detection before consecutive transmissions occur. By monitoring transmission outcomes and detecting collisions in advance, the system can proactively adjust resource allocation to prevent future collisions, rather than reacting after failures occur. This preliminary action maintains reliability while preserving allocation flexibility.
2Productivity
If resource reservation is performed for multiple transmission periods, then transmission efficiency is improved, but consecutive collisions in multiple periods lead to resource waste
Solution Approach 1:
The system monitors transmission outcomes across multiple reserved periods and provides feedback to the network device. When collisions are detected in consecutive periods, the network adjusts future resource allocations based on this feedback, preventing the repetition of collision patterns while maintaining efficient multi-period reservation for successful transmissions.
Solution Approach 2:
The patent dynamically adjusts resource allocation parameters based on detected collision patterns. When consecutive collisions are identified across multiple transmission periods, the network device modifies reservation parameters (such as time-frequency resource selection) for subsequent allocations, maintaining efficiency for non-colliding transmissions while avoiding repeated collision scenarios.
3Reliability
If resource collision detection and indication mechanism is implemented, then communication reliability is improved, but system complexity increases
Solution Approach 1:
User equipment performs self-monitoring of transmission outcomes and autonomously determines when collisions have occurred. The system generates collision indication information based on its own observations without requiring complex external coordination. This self-service approach maintains reliability through distributed intelligence while minimizing additional system complexity.
Solution Approach 2:
The network device acts as an intermediary that receives collision information from user equipment and coordinates resource reallocation. Rather than requiring direct complex interaction between all user equipment pairs, the network mediates the collision resolution process, simplifying the overall system architecture while maintaining reliable collision detection and prevention.
Data Source
AI summary
The present disclosure provides a communication method and a communication device. In the communication method, in response to determining that a reserved resource for transmitting data is subject to a consecutive resource collision in a plurality of transmission periods, data transmission with the reserved resource is stopped.