A Flexible Method for Sharing Network Bandwidth Utilization in Local Network by Applying the Advantage of Fuzzy Control: An Example on WebRTC Streaming

摘要

Limitation of resources and uncertainty of environment in the network communication field, leading us to a problem of how to use the most effective utilization of bandwidth. This research, therefore, focuses on a work of sharing and balancing bandwidth in a local network, some prior users subscribe its service first and consume much bandwidth capacity, it makes new coming users cannot gain its service because it does not have enough requiring amount of the service bandwidth. Thus, we try to distribute the bandwidth of the users who have much utilization, to the new coming, by that way we make a proportional usage with a negotiating resource process between users. In order to do that, we use fuzzy logic control method and set it up to each user, in which each one estimates its network state, and sends a bandwidth request to others, or shares its consumption to others by using methods of decreasing bandwidth usage. In this paper, we design a fuzzy system which uses some equations to calculate input, output system parameters; we also prove that the equations work well in all conditions of the network. In the experiment, we simulate to show how our method works by using OPNET with the fuzzy system in each user. A comparing result in an experiment between our method and original implementation of WebRTC, which is one of the most recent real-time communication technologies, shows that this approach improves video streaming between peers efficiency.