Wireless LAN Multi-Link Interface Selection Through MLO Logic
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Solution Overview
Problem
Current 802.11 architecture limits the ability of upper layer applications to dynamically utilize multiple radio access connectivity in WLANs, as the radio access network is hidden, leading to inefficient transmission choices based on L2 buffer status rather than application-specific performance needs.
Innovation Solution
Exposing lower layer constructs to upper layers through MLO logic, allowing upper layers to select MLD interfaces intelligently based on application-specific performance metrics, such as jitter and delay, by providing data and control plane separation and exposing multiple data plane connectivity channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the radio access network is hidden from upper layer applications, then the system architecture maintains simplicity and standardization, but upper layer applications cannot dynamically select optimal radio interfaces based on application-specific performance needs
Solution Approach 1:
The patent introduces MLO logic as an intermediary component between the radio access network and upper layer applications. This mediator exposes multiple data plane connectivity channels and provides performance information to upper layers, enabling intelligent interface selection without requiring upper applications to directly manage radio complexity. The MLO logic acts as a bridge that translates complex radio management into simplified interface selection for applications.
2Productivity
If transmission choices are based on L2 buffer status, then the system maintains simple control logic, but transmission efficiency decreases because application-specific performance needs are not considered
Solution Approach 1:
The patent segments the control logic into two distinct parts: L2 buffer status management (simple, existing functionality) and application-specific performance optimization (new MLO logic functionality). This segmentation allows the system to maintain simple base control while adding sophisticated performance optimization capabilities through the MLO logic layer, which processes both buffer status and application performance requirements to make intelligent transmission decisions.
Solution Approach 2:
The patent enables dynamic transmission control by allowing the system to adapt interface selection based on real-time conditions. The MLO logic continuously monitors both L2 buffer status and application-specific performance metrics (such as jitter and delay requirements), dynamically adjusting which radio interface is selected for packet transmission. This dynamic adaptation optimizes transmission efficiency without requiring permanent complex control logic for all scenarios.
3Loss of information
If multiple data plane connectivity channels are exposed to upper layers, then applications can make informed transmission choices, but the interface complexity at the data processing layer increases
Solution Approach 1:
The patent implements a universal virtual data port interface that can represent multiple underlying radio interfaces. Instead of exposing separate complex interfaces for each radio, the MLO logic creates a unified virtual interface that encapsulates multiple data plane connectivity channels. This universal interface maintains a consistent API for upper layers while internally managing the complexity of multiple radio interfaces, thus providing full performance information without proportionally increasing interface complexity.
Data Source
AI summary
A method to operate a multi-link wireless device. The method includes establishing at least a first multi-link device interface and a second multi-link device interface, exposing, via a virtual data port, the first multi-link device interface and the second multi-link device interface at a data processing layer of the wireless device, selecting one of the first multi-link device interface and the second multi-link device interface, as a selected multi-link device interface, based on performance information associated with a first radio and a second radio associated, respectively, with the first multi-link device interface and the second multi-link device interface, and wirelessly transmitting a packet from the wireless device by routing the packet through the selected multi-link device interface.