Sidelink Sensing Mode Adaptation for Resource Efficiency
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Solution Overview
Problem
Wireless communication systems face inefficiencies in sidelink communications due to fixed sensing modes, leading to excess power consumption and suboptimal resource utilization, especially in varying system load conditions.
Innovation Solution
User Equipment (UE) adapts its sensing procedure based on resource usage levels and transmission properties, switching between full, partial, and random resource-selection sensing modes to optimize power usage and resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed sensing mode is used in sidelink communications, then the sensing procedure is simple to implement, but power consumption increases and resource utilization becomes suboptimal under varying system load conditions
Solution Approach 1:
The patent implements dynamic sensing mode selection where the UE switches between full sensing mode, partial sensing mode, and random resource-selection mode based on real-time resource usage level thresholds. This dynamic adaptation allows the system to optimize power consumption by using reduced sensing modes when resource usage is low, while maintaining reliability through full sensing mode when resource usage is high.
Solution Approach 2:
The patent changes the sensing procedure parameters (sensing mode, sensing window size, number of sensed slots) based on the determined resource usage level. By adjusting these parameters dynamically according to system conditions, the system achieves optimal balance between power consumption and communication reliability without requiring complex redesign of the sensing mechanism.
2Reliability
If full sensing mode is used continuously, then resource allocation reliability is high, but power consumption and latency increase
Solution Approach 1:
The patent applies partial sensing mode where the UE senses only a subset of slots within the sensing window rather than all slots. This partial action approach maintains sufficient resource allocation reliability by sensing critical slots while reducing overall power consumption by skipping less critical sensing operations during low resource usage conditions.
Solution Approach 2:
The system dynamically switches between full sensing mode (for high reliability when needed) and partial sensing mode (for power savings when resource usage is low). This dynamic adjustment ensures that full sensing is applied only when necessary to maintain reliability, rather than continuously, thereby optimizing the trade-off between reliability and power consumption.
3Reliability
If full sensing mode is used continuously, then resource allocation reliability is high, but latency increases
Solution Approach 1:
The patent implements partial sensing mode where the UE performs sensing on selected slots rather than all slots in the sensing window. This reduces the total sensing time and latency while maintaining sufficient reliability by focusing sensing efforts on the most critical time slots for resource allocation decisions.
Solution Approach 2:
In partial sensing mode, the UE skips sensing certain slots and proceeds directly to resource selection based on available information. This skipping mechanism reduces sensing latency by eliminating unnecessary sensing steps when full sensing is not required, enabling faster resource allocation while maintaining acceptable reliability levels.
4Use of energy by moving object
If reduced sensing mode is used, then power consumption decreases, but sensing accuracy and resource selection reliability deteriorate
Solution Approach 1:
The patent dynamically switches between reduced sensing modes (partial sensing, random resource-selection) and full sensing mode based on resource usage level thresholds. When resource usage is low, reduced modes save power with acceptable accuracy. When resource usage increases above thresholds, the system transitions to full sensing mode to maintain sensing accuracy and resource selection reliability.
Solution Approach 2:
The system continuously monitors the resource usage level and uses this feedback to adjust the sensing mode. This feedback mechanism ensures that sensing accuracy is maintained at appropriate levels by switching to full sensing mode when resource usage patterns indicate that more precise sensing is needed, while using reduced modes when power savings are more critical.
5Use of energy by moving object
If adaptive sensing mode switching is implemented, then power saving and reliability are optimized, but device complexity increases
Solution Approach 1:
The patent changes sensing procedure parameters (mode, window size, number of slots) based on resource usage level thresholds. This parameter-based adaptation approach maintains relative simplicity by using predefined thresholds and modes rather than requiring complex real-time optimization algorithms, thus achieving power savings without excessive complexity increase.
Solution Approach 2:
The system implements dynamic mode switching between full sensing, partial sensing, and random resource-selection modes based on resource usage conditions. This dynamic approach optimizes power saving by adapting to actual system needs while maintaining manageable complexity through well-defined mode transitions and threshold-based decision logic.
Data Source
AI summary
Techniques for wireless communications are described. A communication device, such as a user equipment (UE) may determine a resource usage level in a wireless communications system. Additionally or alternatively, the UE may determine a transmission property associated with sidelink communication at the UE. The UE may adjust, based on the determined resource usage level in the wireless communications system or the determined transmission property associated with the sidelink communication at the UE, or a combination thereof, a sensing mode of a sensing procedure or a sensing parameter of the sensing procedure, or a combination thereof. In some examples, the UE may identify a set of resources used for the sidelink communication at the UE based on the adjusted sensing mode or the adjusted sensing parameter, or a combination thereof. The UE may perform the sidelink communication based on the sensing mode or the sensing parameter, or a combination thereof.