Sidelink Channel Occupancy Duration Sharing for Priority Traffic
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In sidelink communication in unlicensed bands, improper duration of Channel Occupancy Time (COT) can lead to higher priority traffic not being ensured, resulting in inefficient resource sharing between terminal devices.
Innovation Solution
A method where a first terminal device determines the sharing CO duration based on remaining COT, priority values for subsequent sidelink transmissions, or resources available for these transmissions, and transmits this information to other terminal devices, allowing them to determine their own COT for subsequent sidelink transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the duration of sharing Channel Occupancy Time (COT) is extended to ensure higher priority traffic, then the reliability of high-priority transmissions is improved, but the productivity of resource sharing between terminal devices deteriorates due to reduced available resources for other transmissions
Solution Approach 1:
The patent applies dynamics by making the COT sharing duration flexible and adjustable rather than fixed. The first terminal device dynamically determines the sharing COT duration based on its priority level and traffic requirements, allowing the system to adapt resource allocation in real-time. This resolves the contradiction by enabling high-priority traffic to obtain extended COT when needed while allowing lower-priority traffic to use shorter COT periods, thus maintaining overall system productivity.
Solution Approach 2:
The patent changes the parameter of COT duration based on priority levels. Different terminal devices or different transmissions can have different COT durations assigned according to their priority values. This parameter adjustment allows high-priority traffic to secure sufficient transmission time while lower-priority traffic can operate with shorter durations, balancing reliability requirements with overall resource utilization efficiency.
2Productivity
If the duration of sharing Channel Occupancy Time (COT) is reduced to improve resource sharing efficiency, then the productivity of resource sharing is improved, but the reliability of higher priority traffic transmission deteriorates
Solution Approach 1:
The patent applies local quality by assigning different COT duration characteristics to different terminal devices or different transmissions based on their specific priority requirements. Instead of applying a uniform COT duration to all devices, the system allows each device to have customized COT parameters suited to its traffic priorities. This resolves the contradiction by ensuring that high-priority traffic receives adequate transmission time locally while the overall system maintains high resource sharing efficiency through optimized individual allocations.
3Device complexity
If terminal devices use fixed COT duration for sharing, then the device complexity is reduced, but the adaptability to different priority requirements deteriorates
Solution Approach 1:
The patent applies self-service by enabling terminal devices to autonomously determine their own COT sharing duration based on their priority levels and transmission requirements. Each device independently calculates and manages its COT parameters without requiring complex centralized control or negotiation protocols. This resolves the contradiction by maintaining relatively simple device operation while achieving high adaptability to different priority requirements through autonomous decision-making at each device.
Data Source
AI summary
Embodiments of the present disclosure relate to methods, devices and computer readable media for communications. A method comprises determining, at a first terminal device, first sharing Channel Occupancy (CO) duration based on at least one of the following: remaining COT, a first priority value for a subsequent sidelink transmission of the first terminal device, or a first resource for the subsequent sidelink transmission. The method also comprises transmitting information about the first sharing CO duration.