Adaptive Sidelink Resource Evaluation for Unlicensed Channel Occupancy
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing sidelink channel resources, particularly in mode 2 scenarios where UEs do not receive resource allocation assistance from base stations, leading to inefficiencies in channel occupancy and increased interference.
Innovation Solution
The proposed solution involves a device configured to evaluate the availability of sidelink resources using an adaptive evaluation parameter, allowing for efficient channel sensing and resource selection. Additionally, the device can share channel occupancy time (COT) with other devices, optimizing channel usage and reducing idle time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If UEs autonomously select resources for sidelink communication without base station assistance, then device autonomy and coverage are improved, but channel occupancy efficiency deteriorates and interference increases
Solution Approach 1:
The patent implements a feedback mechanism where UEs report channel sensing results and resource availability to the base station. The base station uses this feedback to make informed resource allocation decisions, balancing autonomous operation with centralized coordination to improve channel occupancy efficiency while maintaining device autonomy.
Solution Approach 2:
The patent enables UEs to perform preliminary channel sensing and resource evaluation before actual data transmission. By pre-assessing channel conditions and reporting to the base station, UEs allow the network to pre-coordinate resource allocation, reducing conflicts and improving overall channel occupancy efficiency while preserving device autonomy.
2Adaptability or versatility
If UEs perform autonomous resource selection in mode 2 sidelink, then network coverage extension is improved, but resource allocation efficiency deteriorates
Solution Approach 1:
The patent segments resource allocation into two parts: autonomous resource selection by UEs for coverage extension, and base station coordination for efficiency optimization. The base station segments and distributes resource pools to UEs based on channel conditions and traffic patterns, allowing UEs to operate autonomously in covered areas while maintaining overall system efficiency.
Solution Approach 2:
The patent implements dynamic resource allocation where the base station can adjust resource pool configurations and allocation parameters based on real-time channel conditions and traffic demands. This dynamic approach allows the system to maintain high resource allocation efficiency while enabling autonomous UE operation for network coverage extension.
3Ease of operation
If fixed evaluation parameters are used for channel sensing, then implementation simplicity is improved, but adaptability to varying channel conditions deteriorates
Solution Approach 1:
The patent transitions from fixed evaluation parameters to dynamic parameters that adapt to channel conditions. The base station configures evaluation parameters based on measured channel quality, interference levels, and traffic patterns, allowing the system to maintain implementation simplicity through automated parameter adjustment while achieving high adaptability to varying channel conditions.
Solution Approach 2:
The patent implements feedback loops where channel sensing results are continuously monitored and used to adjust evaluation parameters. The base station receives feedback on channel conditions from UEs and dynamically modifies evaluation parameters to optimize performance, maintaining simplicity through automated adaptation while achieving high channel condition adaptability.
Data Source
AI summary
A device configured for wirelessly transmitting a signal via a sidelink of a wireless communication network, e.g., 5G New Radio, includes a control unit configured for evaluating an availability of resources of the sidelink using an evaluation parameter. The control unit is configured to adapt the evaluation parameter.