V2X Resource Sensing via Centralized Base Station Coordination
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Solution Overview
Problem
Current V2X communication technologies face inefficiencies in resource sensing and allocation, particularly in handling high reliability, low latency, and increased terminal density, which are critical for safety and traffic management in vehicle-to-everything (V2X) communications.
Innovation Solution
The proposed solution involves a device and method for efficient resource sensing in V2X communication, utilizing enhanced sensing modes, centralized sensing, and Listen Before Talk (LBT) schemes to optimize resource allocation, including energy sensing and SA decoding, and introducing semi-persistent scheduling (SPS) to improve capacity and reduce overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If distributed resource allocation is used in V2X communication, then terminal devices can autonomously select resources, but resource collisions increase and communication reliability deteriorates
Solution Approach 1:
The patent introduces a base station as an intermediary to perform centralized sensing and resource allocation. The base station collects sensing information from multiple terminal devices, processes it centrally, and allocates resources to avoid collisions. This mediator approach resolves the contradiction by maintaining autonomous operation capability while ensuring reliable resource allocation through centralized coordination.
Solution Approach 2:
The patent implements a feedback mechanism where terminal devices send sensing information to the base station, which then provides resource allocation decisions back to the terminals. This closed-loop feedback system enables the network to adapt to changing channel conditions and terminal distributions, improving communication reliability while maintaining operational flexibility.
2Productivity
If centralized sensing is implemented, then resource allocation efficiency improves, but system complexity and processing overhead increase
Solution Approach 1:
The patent segments the sensing function between terminal devices and base station. Terminal devices perform local sensing and report results to the base station, which then performs centralized resource allocation. This segmentation reduces the processing burden on individual terminals while maintaining the benefits of centralized coordination, thus improving efficiency without excessive complexity.
Solution Approach 2:
The base station performs multiple functions including sensing information collection, processing, and resource allocation in a unified centralized manner. This multi-functional approach consolidates complexity into a single node that can handle various tasks, improving overall system efficiency without requiring complex distributed processing at each terminal.
3Reliability
If resource sensing is performed continuously, then collision avoidance improves, but energy consumption increases
Solution Approach 1:
The patent implements periodic sensing where terminal devices perform resource sensing at specific intervals rather than continuously. Devices send sensing information to the base station periodically, which then allocates resources based on the accumulated sensing data. This periodic approach maintains collision avoidance capability while significantly reducing energy consumption compared to continuous sensing.
Data Source
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AI summary
[Object] To provide a device capable of performing efficient resource sensing in V2X communication. [Solution] Provided is a device including a processing unit configured to perform sensing using one of first sensing of sensing resources for a predetermined period and selecting communication resources on a basis of a result of the sensing and second sensing of selecting communication resources on a basis of a result of decoding control information transmitted by another user with reference to a mapping table at the time of the first sensing and the second sensing.