Congestion Control Supported Dual-Mode Video Transfer

Abstract

Transfer of videos over the Internet has increased considerably during the past decade and recent studies indicate that video services represent over half of the Internet traffic, with a growing trend. For the user-friendly operation of the Internet, it is important to distribute these videos in a proper and efficient way. However, no congestion control mechanism suitable and widely used for all kinds of video services is available. We have developed a congestion control mechanism, which is particularly suitable for long-living video traffic. The advantage of the proposed mechanism is its dual-priority nature. There is a mode for low priority traffic where the bandwidth is given away to other connections after the load level of a network exceeds a certain level. On the other hand, the real-time mode of the mechanism acquires its fair share of the network capacity. The real network tests of this study verify the proper operation of our congestion control mechanism.