Virtual MAC Layers for Concurrent WLAN Communication and Sensing
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Solution Overview
Problem
Current wireless local area network (WLAN) devices face challenges in efficiently managing concurrent operations such as communication and sensing due to limitations in radio resource allocation and interference across multiple frequency bands.
Innovation Solution
The implementation of multiple virtual medium access control (vMAC) layers with associated virtual physical layers (vPHYs) and radio circuits, allowing dynamic allocation of resources based on operational requirements, enables concurrent operations across extended frequency bands like the 5-7 GHz range, optimizing performance and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple types of communication and sensing operations are performed concurrently using WLAN radio resources, then the functionality and versatility of the device is improved, but the efficiency of resource management deteriorates due to interference and allocation limitations
Solution Approach 1:
The patent segments the WLAN radio resources by introducing multiple virtual Medium Access Control (MAC) layers, each dedicated to specific communication or sensing operations. This segmentation allows different operations to be isolated in separate virtual channels, preventing interference while maintaining concurrent execution. Each vMAC layer manages its own radio resources independently, resolving the contradiction between versatility and resource management efficiency.
Solution Approach 2:
The patent adds a virtualization dimension to the MAC layer, creating multiple virtual MAC instances (vMAC0, vMAC1, etc.) that operate simultaneously over the physical radio interface. This dimensional transformation from a single MAC layer to multiple virtual MAC layers enables concurrent operations without direct resource conflicts, as each vMAC operates in its own virtual namespace while sharing the physical hardware.
2Reliability
If separate devices are used for different functions (communication, navigation, sensing), then the reliability and performance of each function is improved, but the device complexity and cost increase
Solution Approach 1:
The patent enables a single WLAN device to perform multiple functions (communication, sensing, navigation) concurrently by implementing multiple virtual MAC layers within the same device. Each vMAC layer is configured for specific operations, allowing the device to function as multiple specialized devices simultaneously. This multi-functionality approach maintains the reliability of each function while eliminating the need for separate physical devices.
Solution Approach 2:
The patent merges multiple functional capabilities into a single WLAN device by combining multiple virtual MAC layers that handle different operations. Instead of requiring separate devices for communication, sensing, and navigation, the patent integrates them all within one device using virtualization, thereby reducing overall system complexity while maintaining functional performance.
3Ease of operation
If radio resources are allocated statically to specific operations, then the ease of resource management is improved, but the adaptability to changing operational requirements deteriorates
Solution Approach 1:
The patent implements dynamic resource allocation across multiple virtual MAC layers, where radio resources can be dynamically assigned and reassigned based on current operational requirements. The system can adaptively adjust which vMAC layer receives which radio resources in real-time, providing both the simplicity of automated management and the flexibility to respond to changing conditions without manual reconfiguration.
Data Source
AI summary
Embodiments of the present disclosure provide techniques for a multi-radio device (e.g., referred to as a wireless station (STA)) to utilize multiple virtual medium access control layers (vMACs) for concurrent operations using the radios. The vMACs may have different medium access control (MAC) addresses and may be designated for different operations that use the radios. Other embodiments may be described and claimed.