V2X Resource Pool Configuration for Interference Management
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing resource allocation for Vehicle-to-Everything (V2X) communication, particularly in configuring resource pools to support diverse communication services with varying coverages, transmission powers, and methodologies, which affects signal transmission efficiency and reliability.
Innovation Solution
A method for V2X communication that involves configuring a resource pool based on Modulation and Coding Scheme (MCS), retransmission number, multiple access scheme, Transmission Time Interval (TTI) length, and subcarrier spacing, allowing for flexible resource allocation and sharing among communication services, with prioritization of messages based on coverage and transmission methodologies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single resource pool is used for all V2X communication services, then resource allocation is simplified, but services with different coverages and transmission powers experience interference and reduced reliability
Solution Approach 1:
The patent divides a single resource pool into multiple sub-pools, where each sub-pool is dedicated to specific V2X services with particular coverage requirements and transmission powers. This segmentation allows services to be isolated from each other's interference while maintaining manageable configuration complexity through standardized sub-pool structures.
Solution Approach 2:
Different sub-pools within the resource pool are configured with localized quality parameters tailored to specific service requirements. Each sub-pool has optimized modulation and coding schemes, retransmission settings, and access methodologies that match the local needs of services operating within that sub-pool, thereby improving overall reliability without requiring complete resource pool redesign.
2Reliability
If resource pools are configured for each communication service individually, then signal transmission reliability is improved, but resource allocation complexity and overhead increase
Solution Approach 1:
The patent creates a universal resource pool structure that can serve multiple V2X communication services simultaneously. Each sub-pool within the resource pool is designed with multi-functional capabilities to support different service types (broadcast, multicast, unicast) while maintaining a unified configuration framework that reduces overall complexity compared to completely separate resource pools for each service.
Solution Approach 2:
The resource pool configuration employs dynamic parameters that can be adjusted based on service requirements and channel conditions. Retransmission numbers, modulation schemes, and access methodologies are configured dynamically rather than statically, allowing the system to adapt to varying service needs without requiring separate fixed configurations for each service, thereby reducing configuration overhead.
3Length of stationary object
If high transmission power is used to extend coverage, then communication range is improved, but interference to other services and power consumption increase
Solution Approach 1:
The patent segments the resource pool into sub-pools that are allocated to services based on their coverage requirements. Services requiring long-range communication are assigned to specific sub-pools with appropriate transmission power settings, while short-range services use separate sub-pools with lower power levels. This segmentation prevents high-power transmissions from interfering with low-power services.
Solution Approach 2:
The system changes transmission power parameters dynamically based on the service type and coverage requirements. Different sub-pools are configured with different power levels, modulation schemes, and coding rates optimized for their specific coverage needs. This parameter optimization allows the system to achieve required coverage ranges while minimizing unnecessary high-power transmissions that would cause interference.
4Adaptability or versatility
If diverse transmission methodologies are supported for different services, then service adaptability is improved, but resource allocation complexity and interference management difficulty increase
Solution Approach 1:
The patent designs the resource pool structure to be universal and multi-functional, capable of supporting diverse transmission methodologies (broadcast, multicast, unicast) within a unified framework. Each sub-pool is configured with parameters that can accommodate multiple service types, reducing the need for completely separate resource allocations for each methodology while maintaining the adaptability required for different service requirements.
Solution Approach 2:
The system employs dynamic resource allocation within sub-pools, where transmission parameters such as modulation schemes, coding rates, and retransmission settings can be adjusted based on service requirements and channel conditions. This dynamic approach allows diverse transmission methodologies to be supported without requiring static, complex pre-configurations for each service type, thereby reducing resource allocation management complexity.
Data Source
AI summary
The present invention relates to a method by which a vehicle-to-everything (V2X) terminal performs V2X communication in a wireless communication system, and a device. Particularly, the method comprises the steps of: receiving information on a resource pool for V2X communication; and transmitting a message for at least one of a plurality of communication services having different coverages, on the basis of the resource pool.