Energy-Based Sidelink Sensing for Low-Power Resource Selection
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Solution Overview
Problem
Existing wireless communication systems fail to efficiently manage sidelink resource selection for energy-harvesting devices, which may require longer sensing durations due to varying energy-harvesting capabilities and power states, leading to inefficiencies and potential resource conflicts.
Innovation Solution
Implement energy-based sensing parameters, including timing parameters tailored to specific energy classes and power states of user equipment (UEs), allowing devices to select between channel sensing modes based on their energy-harvesting capabilities and power states, with network entities providing indications for resource pool usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If energy-harvesting UEs perform channel sensing to select sidelink resources, then resource selection reliability is improved, but energy consumption increases and device complexity increases
Solution Approach 1:
The patent applies parameter changes by introducing energy-based sensing parameters that vary according to the UE's energy class and power state. The network entity configures different sensing durations, sensing window sizes, and resource selection parameters based on the UE's reported energy level, allowing energy-constrained devices to reduce sensing activities while maintaining adequate resource selection reliability
Solution Approach 2:
The patent implements dynamics by making sensing behavior adaptive rather than static. UEs dynamically adjust their sensing participation based on real-time energy conditions, transitioning between full sensing mode, partial sensing mode, and no sensing mode. This dynamic adaptation allows the system to optimize between reliability and energy consumption based on current device states
2Measurement precision
If energy-harvesting UEs with low power perform full channel sensing, then resource selection accuracy is improved, but device complexity and processing requirements increase
Solution Approach 1:
The patent applies local quality by differentiating sensing requirements based on UE-specific characteristics (energy class, power state) rather than applying uniform sensing rules to all devices. Each UE receives customized sensing parameters appropriate to its local conditions, allowing low-power devices to use simplified sensing procedures while high-power devices perform comprehensive sensing
Solution Approach 2:
The patent segments the sensing process into multiple levels or modes (full sensing, partial sensing, no sensing) that UEs can select based on their capabilities. This segmentation allows the system to divide the sensing task into manageable portions for energy-constrained devices while maintaining accurate sensing for devices with sufficient resources
3Productivity
If all UEs use the same sensing parameters, then system simplicity is maintained, but resource selection efficiency decreases for energy-harvesting devices
Solution Approach 1:
The patent changes parameters by introducing energy-based sensing parameters that are configured by the network entity according to UE energy conditions. These parameters include sensing duration, sensing window configuration, and resource selection timing, which are adjusted to optimize resource selection efficiency for energy-harvesting devices without compromising overall system performance
Solution Approach 2:
The patent achieves universality by creating a multi-functional sensing parameter configuration system that serves multiple UE types (energy-harvesting and non-energy-harvesting) through a unified framework. The same basic sensing mechanism accommodates different energy conditions by parameter adjustment, avoiding the need for completely separate sensing protocols
Data Source
AI summary
Methods, systems, and devices for wireless communication are described to support respective timing parameters for corresponding energy classes or power states of energy-harvesting user equipments (UEs). An energy-harvesting UE may receive an indication of a sidelink resource pool and one or more timing parameters associated with an energy class or power state of the UE. In some cases, the indication may indicate for the UE to communicate without performing sensing, for example, if the UE has a low energy-harvesting capability or low power. In some cases, the indication may define timing parameters for channel sensing, where the timing parameters may be associated with a respective energy class, power state, or combination thereof. Based on determining whether to perform channel, the UE may select a resource for a sidelink message and may transmit the sidelink message using the resource.