Multi-Link Wi-Fi Link Recommendation for Balanced Band Utilization
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Solution Overview
Problem
The underutilization of Multi-Link Operation (MLO) functionality in Wi-Fi networks leads to an imbalance in link utilization, where wider frequency bands are overutilized while narrower bands remain underutilized, resulting in connection failures and degraded network performance.
Innovation Solution
A network device with MLO management logic recommends a set of available links to a station (STA) MLD, managing link availability and utilization by transmitting connection management responses that suggest alternative links, removing traffic identifiers, and updating status codes to optimize link usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If stations prioritize links on wider frequency bands (e.g., 6 GHz) over links on narrower frequency bands, then throughput and latency are improved, but link utilization balance deteriorates causing overutilization of wider bands and underutilization of narrower bands
Solution Approach 1:
The network device monitors link utilization status and provides feedback to the station by including indication information in connection management responses. This feedback mechanism enables the station to adjust its link selection based on real-time network conditions, preventing overutilization of wider bands while maintaining high throughput performance.
Solution Approach 2:
The system dynamically changes link selection parameters based on utilization status. When a link's utilization exceeds a threshold, the network device modifies the indication information to steer the station toward alternative links, thereby balancing the distribution of traffic across different frequency bands while preserving overall performance.
2Speed
If links on wider frequency bands are prioritized, then connection speed is improved, but network capacity deteriorates due to connection failures when maximum station capacity is reached
Solution Approach 1:
The network device provides feedback information about link availability and utilization status in connection management responses. This enables the station to select alternative links before connection failures occur, maintaining high connection success rates while preserving fast connection speeds through intelligent link selection.
Solution Approach 2:
The system performs preliminary assessment of link availability and utilization status before the station finalizes its connection decision. By providing advance information about which links are available and their utilization states, the system prevents the station from attempting connections that would fail, thereby improving reliability without sacrificing speed.
3Ease of operation
If the network allows station connection requests for unavailable links, then connection processing is simplified, but network resources are wasted due to connection failures and retransmissions
Solution Approach 1:
The network device performs preliminary assessment of link availability and includes this information in connection management responses before the station sends its connection request. This preliminary action filters out obviously unavailable links early in the process, preventing wasted network resources on connection attempts that would fail, while maintaining simple connection processing for the station.
Data Source
AI summary
Devices, networks, systems, methods, and processes for recommending one or more links to a station (STA) multi-link device (MLD) are provided herein. The STA MLD may be a part of a wireless network that includes a set of Access Points (AP) MLDs. An AP MLD of the set of AP MLDs may receive a connection management request of the STA MLD for one or more first links. Further, the AP MLD may determine that the first links are unavailable or partially available. Upon determining that the first links are unavailable or partially available, the AP MLD may transmit a connection management response including an indication that recommends a set of second links of the set of AP MLDs to the STA MLD. The transmission of the indication recommending the set of second links may enable the AP MLD to suppress connection failure(s) for the STA MLD.