Same-Band Multi-Link Operation Using VAPs for Stable MLD Traffic
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In multi-link operation (MLO) environments, poor performance of one link can degrade the overall stability and performance of multi-link devices (MLDs), particularly due to link flapping or interference, necessitating improved link management to maintain high throughput and reliability.
Innovation Solution
MLDs establish multiple links on the same radio band using virtual access points (VAPs) and a primary service set identifier (SSID) to switch between links seamlessly, ensuring secure data transmission and load balancing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple links on different radio bands are established for concurrent data transmission, then throughput is improved, but reliability deteriorates due to link flapping and interference
Solution Approach 1:
The patent segments the communication links by establishing multiple independent links on different radio bands (2.4 GHz, 5 GHz, 6 GHz) between MLDs. Each link operates independently with its own VAP configuration, allowing selective activation and deactivation of individual links based on their performance, thus preventing link flapping from affecting all connections simultaneously.
Solution Approach 2:
The patent changes the radio band parameter by establishing links across multiple frequency bands (2.4 GHz, 5 GHz, 6 GHz) and dynamically selecting which links to activate based on interference conditions and performance metrics. This parameter diversification allows the system to avoid interference on one band by switching to another, maintaining reliability while preserving throughput.
2Adaptability or versatility
If links are established between VAPs with different SSIDs, then link flexibility is improved, but key generation complexity increases
Solution Approach 1:
The patent makes the primary SSID universal across all VAPs, allowing a single key generation process to serve multiple links. By configuring all VAPs to use the same primary SSID, the system achieves multi-functionality where one key management mechanism handles security for all links, eliminating the need for separate key generation for each SSID while maintaining link flexibility through different VAP configurations.
Solution Approach 2:
The patent merges the SSID configuration by making all VAPs share the same primary SSID. This consolidation simplifies the security architecture by combining multiple SSID-based key management systems into a single unified system, reducing complexity while preserving the ability to establish multiple independent links through different VAPs.
Data Source
AI summary
In implementations of the present disclosure, a method is provided for multi-link operation (MLO) at multi-link devices (MLDs). A first MLD establishes a plurality of links on a radio band with a second MLD based on a primary service set identifier (SSID). The first MLD further generates a key for the plurality of links on the radio band based on the primary SSID, and performs transmission of a traffic flow with the second MLD at least based on the plurality of links and the key. In this way, with multiple links on the same radio band, a suitable link among the multiple links can be used for the transmission, thereby improving stability, utility and performance of links in the MLO.