V2X Resource Pool Segmentation for Collision Avoidance
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Solution Overview
Problem
The existing 5G communication systems face challenges in efficiently managing radio resources for vehicular communication, particularly in avoiding resource selection collisions and meeting low latency requirements for vehicle-to-everything (V2X) services.
Innovation Solution
The proposed method involves a wireless communication system where mode 3 and mode 4 terminals share a radio resource pool, with a base station configuring a resource reservation field based on semi-persistent scheduling (SPS) periodicity and transmitting control messages to manage resource allocation, allowing terminals to autonomously select or use scheduled resources to minimize disruptions and optimize resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If mode 3 and mode 4 terminals share a radio resource pool, then resource utilization efficiency is improved, but resource selection collisions increase
Solution Approach 1:
The resource pool is segmented into two distinct parts: mode 3 resource pool and mode 4 resource pool. Mode 3 terminals are restricted to selecting resources only from the mode 3 resource pool, while mode 4 terminals select from the mode 4 resource pool. This segmentation prevents resource selection collisions between different terminal types while maintaining high resource utilization efficiency within each dedicated pool.
2Loss of time
If autonomous resource selection is allowed, then transmission latency is reduced, but resource collisions increase
Solution Approach 1:
Different resource selection mechanisms are applied to different terminal types based on their local characteristics. Mode 3 terminals use autonomous resource selection from their dedicated pool, while mode 4 terminals use base station-scheduled resource allocation. This local quality approach allows each terminal type to operate optimally without causing collisions, as each terminal selects or is assigned resources only from its designated pool.
3Reliability
If dedicated resource pools are assigned, then resource collisions are avoided, but resource management complexity increases
Solution Approach 1:
The system dynamically adapts resource allocation based on terminal type. When a mode 3 terminal autonomously selects resources from its dedicated pool, no additional management overhead is required. When a mode 4 terminal requires scheduled allocation, the base station dynamically assigns resources from the mode 4 pool. This dynamic approach avoids resource collisions while managing complexity through automated terminal-type-based resource pool assignment.
Data Source
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.