V2X Terminal Resource Pool Sharing for Low-Power Out-of-Coverage Allocation
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Solution Overview
Problem
Existing 5G communication systems lack efficient methods for resource allocation between vehicle and pedestrian terminals in V2X communication, particularly in scenarios where terminals are outside network coverage, leading to increased power consumption and suboptimal resource selection.
Innovation Solution
A method for resource allocation between terminals in V2X communication, involving sharing of resource pools based on channel busy ratio (CBR) and other parameters, with terminals requesting and receiving resource allocation information from each other to minimize power consumption and improve resource selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If terminals autonomously select transmission resources through sensing, then resource allocation flexibility is improved, but power consumption increases
Solution Approach 1:
The patent enables terminals to autonomously perform sensing and resource selection without continuous base station intervention. The terminal independently monitors channel conditions, identifies available resources, and makes allocation decisions based on pre-configured parameters and real-time channel state information, thereby reducing control signaling overhead and power consumption while maintaining flexibility
Solution Approach 2:
The patent dynamically adjusts sensing parameters such as sensing window size, resource selection window, and threshold values based on channel conditions and traffic characteristics. By adapting these parameters, the system optimizes the balance between sensing accuracy (affecting resource allocation flexibility) and processing complexity (affecting power consumption)
2Measurement precision
If terminals exchange detailed channel state information, then resource allocation accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent extracts only the essential channel state information parameters needed for resource allocation decisions, such as channel busy ratio and reference signal received power thresholds, rather than transmitting complete channel state matrices. This selective extraction reduces signaling overhead while preserving the accuracy needed for effective resource allocation
Solution Approach 2:
The patent performs preliminary channel sensing and pre-calculates resource allocation candidates before actual transmission. By preparing resource allocation options in advance based on current channel conditions and sharing these preprocessed results, the system reduces the need for detailed real-time channel state information exchange, thereby lowering signaling overhead while maintaining allocation accuracy
Data Source
AI summary
Disclosed are a communication technique for merging, with IoT technology, a 5G communication system for supporting a data transmission rate higher than that of a 4G system, and a system therefor. The present disclosure can be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail, security- and safety-related services, and the like) on the basis of 5G communication technology and IoT-related technology. A method for a first terminal of a communication system, according to one embodiment of the present disclosure, comprises the steps of: sharing information about a resource pool with a second terminal; receiving a request for resource allocation information from the second terminal; and transmitting, to the second terminal, resource allocation information indicating at least one resource related to the resource pool having been shared with the second terminal.