Multi-Link Wi-Fi Interface Channel Selection to Prevent Interference
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Solution Overview
Problem
In multi-link communication devices, determining appropriate frequency channels for multiple communication interfaces to prevent interference and ensure stable communication is challenging.
Innovation Solution
A communication device with first and second interfaces that select and control frequency channels for the second interface to avoid interference with the first interface during multi-link communication, allowing simultaneous transmission and reception across different frequency channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple communication interfaces operate in parallel with multi-link communication, then communication throughput and efficiency are improved, but frequency channel interference and communication stability deteriorate
Solution Approach 1:
The patent changes the frequency channel parameters dynamically by selecting channels from a shared pool based on current interface states. When the first interface performs multi-link communication on channels {1, 2, 3}, the second interface selectively uses channels from this pool, transforming the static channel assignment into a dynamic parameter adjustment that prevents interference while maintaining high throughput
Solution Approach 2:
The system implements dynamic frequency channel allocation where the second interface's channel selection adapts to the first interface's operational state. The selection unit dynamically determines which channels from the shared pool to use based on real-time communication conditions, making the system flexible and adaptive rather than static and rigid
2Adaptability or versatility
If frequency channels are shared between multiple interfaces, then resource utilization efficiency is improved, but frequency channel interference increases
Solution Approach 1:
The patent applies local quality by assigning different roles to different interfaces regarding frequency channel usage. The first interface uses channels {1, 2, 3} for multi-link communication, while the second interface selectively uses channels from this pool based on specific conditions. Each interface has localized channel usage rights that prevent direct interference while maintaining efficient resource utilization
3Adaptability or versatility
If the second interface starts operations while the first interface is performing multi-link communication, then device functionality and versatility are improved, but frequency channel selection complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-establishing a shared frequency channel pool {1, 2, 3} that the first interface uses for multi-link communication. Before the second interface starts operations, the system has already prepared the channel pool, so the second interface can directly select from this pre-defined pool without complex real-time negotiations, reducing selection complexity while maintaining flexibility
Data Source
AI summary
A communication device is configured to include first and second interfaces (STA and AP functions) that are communication interfaces capable of being used for communication with mutually-different counterpart devices. In a case where operations of the second interface are started in a state where the first interface is performing the multi-link communication, the communication device selects, as frequency channels to be used on links of the second interface, at least some of a plurality of frequency channels each used on a corresponding one of a plurality of links by the first interface. Further, the communication device controls the second interface to communicate with the counterpart device using the selected frequency channels.