V2X Resource Pool Sharing for Collision Avoidance
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Solution Overview
Problem
Current 5G communication systems face challenges in efficiently managing radio resources for vehicular communication, particularly in meeting the requirements of low latency and high reliability, especially in scenarios where terminals operate in different modes, leading to potential resource selection collisions.
Innovation Solution
The method involves a system where mode 3 and mode 4 terminals in a wireless communication system share a radio resource pool dynamically, with the base station managing the shared resource pool through RRC Connection Reconfiguration messages and SIBs, allowing terminals to autonomously select or be scheduled for resource use, minimizing disruptions and collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If mode 3 and mode 4 terminals share a radio resource pool dynamically, then frequency resource utilization is improved, but resource selection collisions may occur
Solution Approach 1:
The base station performs preliminary sensing and determines the occupancy status of radio resources in the shared pool before allocating them to mode 3 terminals. This advance preparation prevents resource selection collisions by ensuring that resources already occupied by mode 4 terminals are not selected by mode 3 terminals, thus resolving the contradiction between improving resource utilization and preventing collisions.
2Productivity
If the base station manages the shared resource pool through sensing and indication, then resource management efficiency is improved, but system complexity increases
Solution Approach 1:
Mode 4 terminals autonomously select and occupy radio resources in the shared pool without requiring base station scheduling. The base station only needs to perform sensing and send simple indication messages, rather than managing all resource allocations centrally. This self-service approach improves resource management efficiency while minimizing the increase in base station complexity.
3Reliability
If mode 3 terminals are notified of mode 4 terminal's resource use, then resource selection collisions are prevented, but signaling overhead increases
Solution Approach 1:
The base station extracts only the essential occupancy status information of radio resources from the complex state of the shared pool, and conveys this simplified information to mode 3 terminals through indication messages. This extraction approach prevents resource selection collisions by providing necessary information while minimizing signaling overhead by transmitting only the most critical data.
Data Source
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AI summary
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The present invention relates to a method for preventing resource selection collision between terminals and succeeding in more quickly transmitting data, on the basis of a resource pool sharing plan, in order to support low latency data transmission of a V2X terminal in a wireless communication system.