Sidelink Channel Coexistence via Dynamic Resource Pattern Selection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, the coexistence of multiple radio access technologies on the same sidelink channel leads to collisions, resulting in poor performance and reliability due to the lack of resource coordination between NR V2X and LTE V2X devices.
Innovation Solution
The proposed solution involves monitoring the sidelink channel to determine the ratio of NR V2X to LTE V2X traffic and dynamically selecting a resource pattern to allocate resources accordingly, reducing collisions by splitting resources based on the estimated ratio, thereby improving system efficiency and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple radio access technologies (NR V2X and LTE V2X) share the same sidelink channel resources, then spectrum utilization is improved, but collisions occur resulting in poor communication performance and reliability
Solution Approach 1:
The patent segments the sidelink channel resources into multiple resource groups, where each resource group is further divided into multiple resource patterns. Different radio access technologies are assigned to different resource patterns within the same resource group, enabling them to share spectrum without colliding. This segmentation allows NR V2X and LTE V2X devices to coexist on the same channel while maintaining reliable communication through structured resource allocation.
2Reliability
If resource coordination between NR V2X and LTE V2X devices is implemented, then collision reduction is achieved, but system complexity increases due to monitoring and ratio determination requirements
Solution Approach 1:
The patent implements a self-service mechanism where each device autonomously monitors the resource group to determine the ratio of NR V2X to LTE V2X traffic. Based on this self-determined ratio, devices automatically select appropriate resource patterns without requiring centralized coordination or complex signaling. This self-service approach reduces collision probability while minimizing the complexity burden on individual devices.
3Productivity
If dynamic resource pattern selection based on traffic ratio is implemented, then resource allocation efficiency is improved, but measurement and detection difficulty increases due to continuous monitoring requirements
Solution Approach 1:
The patent performs preliminary action by pre-configuring multiple resource patterns before actual communication begins. Each resource pattern is designed to correspond to specific traffic ratio ranges (e.g., pattern 1 for high NR V2X ratio, pattern 2 for balanced ratios, pattern 3 for high LTE V2X ratio). During operation, devices simply monitor the current traffic ratio and select the pre-configured pattern that matches the observed conditions, avoiding the need for complex real-time calculations or measurements.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. The method may include monitoring a resource group of a sidelink channel for an indication of sidelink messaging traffic, determining a ratio of sidelink messaging traffic by a first radio access technology relative to sidelink messaging traffic by a second radio access technology based on the monitoring, selecting, based on the ratio, a first resource pattern of a set of multiple different resource patterns, and communicating, via the sidelink channel, a first sidelink message within a first resource of the resource group in accordance with the first resource pattern.