AP MLD Wireless Link Allocation to Reduce Station Congestion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face network congestion and inefficient link allocation when multiple stations, including legacy and non-AP MLO devices, connect to an AP MLD, leading to competition on the same link and idle links, especially when using CSMA/CA without OFDMA or Spatial Reuse.
Innovation Solution
An AP MLD allocates wireless links based on signal strength, packet error rate, channel idle ratio, and channel usage status to optimize link usage, notifying stations via an initial control frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If CSMA/CA is used for multiple stations to contend for wireless access, then stations can access the network, but only one set of data transmission can occur at a time causing network congestion
Solution Approach 1:
The patent segments the wireless medium into multiple independent links (2.4GHz, 5GHz, 6GHz bands) and assigns different stations to different links. This allows parallel data transmissions on multiple links simultaneously, eliminating the single-transmission limitation of CSMA/CA and dramatically increasing network throughput while reducing latency.
Solution Approach 2:
The patent transitions from single-link contention-based access to multi-link parallel access by adding the frequency band dimension. Stations are distributed across different frequency bands (2.4GHz, 5GHz, 6GHz), enabling simultaneous transmissions in multiple dimensional spaces rather than sequential access on a single channel.
2Adaptability or versatility
If legacy devices connect to AP MLD, then they can access the network, but they are arranged on the same link causing competition and congestion
Solution Approach 1:
The patent applies local quality by assigning legacy devices to specific frequency bands (2.4GHz or 5GHz) based on their capabilities, while MLO-capable devices can utilize all bands. This localized optimization ensures legacy device compatibility while maintaining high network efficiency through differentiated link allocation strategies.
Solution Approach 2:
The patent implements dynamic link allocation where the AP MLD continuously monitors link conditions and reassigns stations to optimal links. Legacy devices are dynamically placed on appropriate single links, while MLO devices can dynamically switch between links, creating a flexible system that maintains both compatibility and efficiency.
3Ease of operation
If multiple stations are allocated to the same link, then connection establishment is simple, but link competition causes congestion and performance degradation
Solution Approach 1:
The patent segments the station population and link resources to create smaller, less congested groups. By dividing stations across multiple links based on device type, capability, and traffic patterns, the system maintains simple connection establishment procedures while significantly improving connection stability through reduced link competition.
Data Source
AI summary
In an aspect of the disclosure, a method for allocating wireless links of an access point (AP) multi-link device (MLD) is provided. The method comprises: establishing connections with stations correspondingly via wireless links; receiving a signal strength indication of each station on each wireless link; obtaining a weight on each wireless link according to the signal strength indication, a packet error rate, a channel idle ratio and a channel usage status; allocating each wireless link for each station based on the weight of each wireless link; and notifying each station respectively with an allocated wireless link from wireless links via an initial control frame.