Partial Sensing Resource Selection in Sidelink
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Solution Overview
Problem
Current sidelink communication technologies in 5G NR face challenges in reducing power consumption during resource selection, particularly in scenarios where full sensing is inefficient due to high power usage and unreliable detection of available resources, especially in partial sensing with smaller window sizes and varying periodicities.
Innovation Solution
Implementing partial sensing with adaptive thresholds and progressive sensing techniques, allowing for switching between sensing-based and random resource selection, and configuring sensing windows to balance power savings with reliable resource detection, including contiguous based partial sensing for periodic and aperiodic traffic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If full sensing is used for resource selection, then resource detection reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements partial sensing by monitoring only a subset of sensing occasions rather than all available sensing opportunities. The UE selectively senses based on configured sensing occasions and window sizes, performing sensing actions on only the necessary portion of available resources, thereby reducing power consumption while maintaining adequate resource detection reliability.
2Use of energy by moving object
If sensing window size is reduced for partial sensing, then power consumption is reduced, but resource detection reliability deteriorates
Solution Approach 1:
The patent employs dynamic sensing window configuration where the sensing window size and duration are adaptively adjusted based on traffic conditions, periodicity requirements, and resource availability. The network can configure different sensing window sizes (e.g., 1ms, 2ms, 4ms, 8ms) and the UE adapts its sensing behavior accordingly, allowing the system to optimize between power consumption and detection reliability in real-time.
Solution Approach 2:
The patent changes key sensing parameters including sensing window size, sensing periodicity, and threshold values to balance power consumption and detection reliability. By adjusting these parameters dynamically based on traffic patterns and channel conditions, the system can operate efficiently in partial sensing mode while maintaining adequate resource selection performance.
3Adaptability or versatility
If sensing periodicity varies for different traffic types, then adaptability to traffic patterns is improved, but system complexity increases
Solution Approach 1:
The patent applies different sensing configurations and periodicities tailored to specific traffic types and QoS requirements. Each service or data flow can have its own sensing parameters configured locally, allowing optimized sensing behavior for periodic traffic, aperiodic traffic, and different priority levels without requiring complex global sensing mechanisms.
Data Source
AI summary
A system and method for operating a user equipment (UE) for sidelink transmission of data in a wireless communications system includes the UE determining a candidate resource region for a transmission of data, the candidate resource region indicating candidate resource slots for the transmission of the data, monitoring sensing slots in sensing occasions to determine available resources from the candidate resource region, the sensing occasions being determined in accordance with the candidate resource region, a periodicity for sensing, and a maximum number of the sensing occasions, selecting, by the UE, a resource from the available resources, and transmitting, by the UE, data over the selected resource.