Wi-Fi Access Point Coordination for Roaming and Throughput
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Solution Overview
Problem
Existing Wi-Fi networks in residential environments face challenges in seamlessly integrating seamless Wi-Fi roaming with high throughput due to insufficient coverage and limited backhaul bandwidth, particularly in FTTR architectures.
Innovation Solution
A controller is used to select one or more access points based on communication performance parameters such as RSSI and load information to provide a data transmission service, ensuring optimal network access and data transmission modes for stations, thereby improving user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple access points are used to expand Wi-Fi coverage, then coverage area is improved, but network complexity increases and coordination difficulty increases
Solution Approach 1:
Multiple access points are merged into a unified network system under a single controller, allowing them to coordinate and manage client connections collectively. This combining approach expands coverage while distributing the management burden across multiple simplified nodes rather than creating a complex distributed system.
Solution Approach 2:
A controller is introduced as an intermediary component that centralizes the management of multiple access points and client stations. The controller receives performance parameters from access points and determines optimal data transmission modes, simplifying the coordination complexity that would otherwise exist in a fully distributed system.
2Productivity
If access points transmit data simultaneously to improve throughput, then data transmission efficiency is improved, but conflicts and interference increase
Solution Approach 1:
The system implements feedback mechanisms where access points report performance parameters (including signal strength and load information) to the controller. Based on this feedback, the controller dynamically determines optimal data transmission modes, enabling simultaneous transmission from multiple access points while coordinating to minimize conflicts and interference.
Solution Approach 2:
The data transmission mode is made dynamic rather than static. The controller adapts transmission strategies based on real-time performance parameters from access points and client stations, allowing the system to optimize throughput while avoiding conflicts by adjusting transmission parameters dynamically rather than using fixed simultaneous transmission schedules.
3Device complexity
If the controller centrally manages all access points to simplify coordination, then management complexity is reduced, but system latency increases
Solution Approach 1:
The control function is segmented between the central controller and individual access points. Access points locally manage basic operations and transmit performance parameters to the controller, while the controller makes high-level decisions about data transmission modes. This segmentation reduces the communication overhead and latency associated with centralized control while maintaining management simplicity.
Data Source
AI summary
This application relates to the field of communication technologies, and specifically, to a data transmission method and apparatus. One example method includes: receiving, by a controller, a performance parameter sent by each of the access points, wherein the performance parameter indicates communication performance between the access point that sends the performance parameter and a first station; determining, by the controller based on each received performance parameter, an access point set configured to provide a data transmission service for the first station, wherein the access point set comprises at least one of the plurality of access points; and when the access point set comprises at least two access points, determining, by the controller, a data transmission mode between each of the access points in the access point set and the first station based on the performance parameter sent by each of the access points in the access point set.