Sidelink Resource Re-Evaluation Based on Battery-Aware Triggers

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing sidelink communication protocols in wireless networks face inefficiencies in resource allocation and management, leading to suboptimal utilization and increased latency in device-to-device communication.

Innovation Solution

Implementing a mechanism for wireless devices to selectively enable or disable resource re-evaluation in sidelink communication, based on specific criteria such as traffic load, packet sizes, and network conditions, to optimize resource allocation and reduce latency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If resource re-evaluation is continuously performed in sidelink communication, then resource allocation efficiency is improved, but device complexity and processing overhead increase

Engineering Contradiction:

Improveresource allocation efficiencyVSAvoidprocessing overhead

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent implements dynamic resource re-evaluation where UEs adaptively adjust their resource selection behavior based on changing channel conditions and traffic patterns. The system transitions from static resource allocation to dynamic re-evaluation triggered by specific events such as channel quality changes, packet arrivals, or interference detection, thereby optimizing resource usage without requiring continuous monitoring and processing.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the operational parameters of resource re-evaluation by introducing threshold-based triggers and conditional criteria. Instead of continuous re-evaluation, the system monitors parameters such as channel quality indicators, buffer status, and interference levels, and only initiates resource re-selection when predefined thresholds are crossed, thus reducing unnecessary processing while maintaining efficiency.

Inventive Principle:

Principle #35Parameter changes

2Device complexity

If resource re-evaluation is disabled to reduce complexity, then device complexity is reduced, but resource utilization and communication performance deteriorate

Engineering Contradiction:

Improveprocessing overheadVSAvoidresource utilization

Core Design Contradiction:

Device complexityVSProductivity

Solution Approach 1:

The patent implements feedback mechanisms where UEs continuously monitor channel conditions, resource availability, and transmission outcomes. This feedback information is used to trigger resource re-evaluation only when necessary, such as when channel quality degrades below a threshold or when resource conflicts are detected. The feedback loop ensures that resource utilization is optimized without requiring constant active re-evaluation, thus maintaining performance while reducing complexity.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent performs preliminary resource selection and reservation based on initial channel conditions and traffic patterns. By pre-selecting resources and setting up reservation mechanisms in advance, the system reduces the need for frequent re-evaluation while ensuring that resources are readily available when needed. This preliminary action maintains resource utilization efficiency without requiring continuous processing overhead.

Inventive Principle:

Principle #10Preliminary action

3Productivity

If resource re-evaluation is performed frequently, then resource allocation efficiency is improved, but transmission latency increases due to additional processing

Engineering Contradiction:

Improveresource allocation efficiencyVSAvoidtransmission latency

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The patent implements periodic resource re-evaluation at strategically determined intervals rather than continuously or at every transmission opportunity. The periodic re-evaluation is synchronized with traffic patterns and channel condition variations, performing resource assessment at intervals that balance efficiency improvements with latency constraints. This periodic approach ensures resources remain optimized without introducing excessive processing delays.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent allows the system to skip resource re-evaluation in favorable conditions where channel quality is stable and resources are already optimally allocated. By skipping unnecessary re-evaluation steps and rushing through transmissions when conditions permit, the system reduces processing latency while maintaining resource allocation efficiency. The skipping mechanism is activated when monitoring indicates no significant changes in channel or traffic conditions.

Inventive Principle:

Principle #21Skipping (Rushing through)

Data Source

PatentUS12574854B2Triggering resource re-evaluation for sidelink

Publication Date: 2026.03.10 OFINNO LLC

AI summary

A wireless device receives one or more messages including one or more configuration parameters of sidelink resource pools, wherein: the one or more configuration parameters indicate, for each of the sidelink resource pools, a value for disabling of resource re-evaluation of a corresponding sidelink resource pool; and the resource re-evaluation occurs after selection of resources for a sidelink transmission and before the sidelink transmission via the resources. The wireless device disables the resource re-evaluation of a first sidelink resource pool, of the sidelink resource pools, based on the value for the first sidelink resource pool and a battery level of the wireless device. The wireless device transmits a first sidelink transmission, via resources from the first sidelink resource pool, based on the determining.