Wireless Traffic Flow Control Using Dynamic Throughput Feedback
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Solution Overview
Problem
Existing control systems struggle to allocate communication bands effectively in wireless networks due to fluctuations in maximum throughput, leading to issues like packet loss, delay, and reduced network efficiency.
Innovation Solution
A control system that includes a telemetry apparatus to ascertain the maximum throughput and a controller to determine band control values for each traffic flow based on this throughput, ensuring allocation according to actual network conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a set maximum throughput is used for band allocation without following variations, then quality control on service/application basis is achieved, but the band allocation does not match actual throughput fluctuations causing packet loss, delay, and jitter
Solution Approach 1:
The patent implements a feedback mechanism where the controller receives actual throughput information from the wireless network and adjusts band allocations dynamically. The controller monitors throughput variations and modifies scheduling decisions based on this feedback, ensuring that band allocation matches actual network conditions while maintaining quality control for different services and applications.
Solution Approach 2:
The patent transitions from static band allocation based on predetermined maximum throughput to dynamic band allocation that adapts to real-time throughput variations. The controller continuously adjusts scheduling parameters and band assignments according to current network conditions, enabling the system to respond to fluctuations in wireless network performance while preserving service-level quality guarantees.
2Reliability
If band allocation is increased to guarantee quality control, then packet loss and delay are reduced, but network usage efficiency decreases when actual throughput is lower than set maximum
Solution Approach 1:
The patent applies partial action by allocating bands proportionally to actual throughput needs rather than reserving excessive bandwidth for all services. The controller dynamically adjusts the degree of band allocation to each traffic flow based on current network conditions and service requirements, ensuring sufficient bandwidth for quality control while avoiding waste when actual throughput is below maximum capacity.
Solution Approach 2:
The patent changes the parameter of band allocation from fixed values based on maximum throughput to dynamic values based on actual throughput measurements. The controller adjusts scheduling parameters, transmission rates, and band assignments in real-time according to observed network performance, optimizing the balance between reliability and productivity by matching resource allocation to actual demand.
3Reliability
If EDCA priority control is used for wireless section, then existing quality control is achieved, but control on terminal/destination basis for traffic flow quality control is difficult
Solution Approach 1:
The patent segments the quality control mechanism into terminal-specific and service-specific components. The controller maintains separate scheduling decisions and band allocations for each terminal and traffic flow, enabling fine-grained control at the terminal level while still providing service-level quality guarantees. This segmentation allows independent optimization for each destination while maintaining overall system-wide quality control.
Solution Approach 2:
The patent introduces a centralized controller as an intermediary between the wireless network and terminals to enable terminal-based traffic flow control. This intermediary receives throughput information from the network, makes scheduling decisions for individual terminals and traffic flows, and manages band allocations dynamically. The controller acts as a mediator that translates network conditions into terminal-specific scheduling actions, making fine-grained quality control practical and manageable.
Data Source
AI summary
An object of the present invention is to provide a control system, a control method, a controller, and a program capable of guaranteeing a band allocated to each traffic flow while following a maximum throughput of a wireless network which changes from moment to moment. The control system according to the present invention includes a terminal and an access point that transmit packets to each other via the wireless network, a telemetry apparatus that ascertains a maximum throughput of the wireless network, and a controller that performs transmission control on the terminal and the access point, and the controller determines the band control value for each traffic flow on the basis of the maximum throughput notified of by the telemetry apparatus and the required band for each traffic flow notified of by at least the terminal, and notifies the terminal and the access point of the band control value.