Multi-link Wi-Fi Device Channel Selection for Collision Reduction
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Solution Overview
Problem
The increasing number of users on Wi-Fi channels leads to overlapping coverage, reducing the average time and spectral resources allocated to each device, resulting in frequent packet collisions and retransmissions, which wastes spectral resources and time.
Innovation Solution
A multi-link device with a link information module, decision module, and transceiver module that collects wireless environment and packet transmission information, generates feature scores for each channel, determines suitable channels based on latency or throughput requirements, and adjusts transceiver settings to optimize data transmission across multiple channels, thereby reducing collisions and improving resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple users share the same Wi-Fi channel, then network coverage is extended, but spectral resources and time allocated to each device are reduced
Solution Approach 1:
The patent segments the single Wi-Fi channel into multiple links by utilizing different frequency bands (2.4GHz, 5GHz, 6GHz) and access points. Each link operates independently, allowing the system to divide the spectral resources into multiple portions that can be simultaneously utilized, thereby maintaining adequate resources per device while extending overall network coverage through multi-link aggregation.
2Quantity of substance
If more users access the Wi-Fi channel, then network capacity increases, but packet collisions and retransmissions increase
Solution Approach 1:
The patent transitions from single-dimensional channel access to multi-dimensional transmission by establishing multiple independent links across different frequency bands and access points. This dimensional expansion creates parallel transmission paths, increasing network capacity while maintaining packet transmission reliability through diverse routing options that avoid collisions on any single channel.
Solution Approach 2:
The patent introduces feature scores as an intermediary mechanism that evaluates channel conditions, latency, and transmission quality across multiple links. This intermediary assessment layer enables intelligent selection and aggregation of optimal links, thereby increasing effective network capacity while filtering out poor-quality transmissions that would cause collisions and retransmissions.
3Reliability
If packet retransmissions occur frequently, then data delivery reliability is maintained, but spectral resources and time are wasted
Solution Approach 1:
The patent performs preliminary assessment of multiple links using feature scores that evaluate channel conditions, latency, and transmission quality before actual data transmission. By pre-selecting optimal links based on this advance evaluation, the system ensures reliable data delivery from the outset, preventing the need for retransmissions and thereby avoiding waste of spectral resources and time.
Data Source
AI summary
A multi-link device includes a link information collecting module, a decision module, a control module, and a transceiver module. The link information collecting module collects wireless environment information and packet transmission information for each channel in the M channels, generates a set of feature scores of each channel, and outputs M sets of feature scores of the M channels. The decision module generates a latency score according to data transmission requirements of a data transmission, if the latency score exceeds a latency threshold, determines whether there are 2 channels satisfying a latency criterion according to the M sets of feature scores of the M channels, and outputs a decision report according to whether there are 2 channels satisfying the latency criterion. The control module configures the transceiver module according to the decision module. The transceiver module performs the data transmission.