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Mobile Ad Hoc Networks (MANETs) have been an important research topic for the last years, playing a crucial role within the fast growing sector of mobile communications. At the same time, video applications over mobile devices are becoming widely used by nowadays mobile clients, where the quality in the transmission of such contents will determine the success of these applications in the future. Therefore,...
With the development of the wireless communications technology and the multimedia technology, the wireless internet multimedia transport of real-time becomes an important applications field. We will meet a problem that the distinguish of the status of package loss is not very good which will affect the QoS when we transport multimedia data in wireless internet. Based on this problem the article comes...
TFRC over wireless access networks has poor performance because it accounts wireless losses as congestion losses. To solve the problem, an enhanced TFRC protocol based on step ECN marking is proposed. The simulations show that, with appropriate loss differentiation and congestion notification, the new protocol achieves much higher throughput than TFRC as well as keeps reasonable friendliness to TCP...
Applications like streaming audio, Internet telephony and multi-player online games prefer timeliness in packet delivery to reliability. TCP's reliability through packet retransmission and abrupt rate control features are unsuitable for these applications. As a result, these applications prefer UDP as the transport layer protocol. UDP does not have any congestion control mechanism which is vital for...
As a system for guaranteeing quality of service of multimedia communications, there is integrated services that guarantees bandwidth for object traffic by executing bandwidth control. This system, however, restricts bandwidth for other traffics because of its static bandwidth control throughout the whole session of object traffic. Then, to solve the problem, we studied a dynamic traffic control system...
New emerging technologies like Multimedia applications require timely delivery of information as compared to reliability. The most widely used protocols over transport layer are Transmission Control Protocol (TCP) and User Datagram Protocol (UDP). Both of these have some drawbacks while using in real time applications. TCP increases delay in transfer of data but achieving reliable transfer of data...
ECN-capable TCP-friendly layered multicast multimedia delivery combines explicit congestion notification (ECN) with the TCP-friendly layered multicast scheme. TCP-Friendliness denotes that receiver-driven architecture behaves under congestion like the TCP protocol. Unlike well-known TCP-friendly protocols (TFRC, TFMCC, WEBRC), which use TCP throughput the equation, our system assures TCP-friendliness...
Multi-rate multicast schemes can be broadly classified into two categories. In layered multicast, a video file is transmitted by a base layer, which contains the most important features of the video. Additional layers, called enhancement layers, contain data that refine the quality of the base layer. In simulcast, the video file is transmitted by replicated layers that contain the same content at...
In this paper, we propose a high speed binomial congestion control protocol (HSBCC) for streaming video transmitting in high speed network environment, which is based on high speed TCP protocol (HSTCP) and binomial congestion control protocol (BCC). HSTCP offers an effective and robust mechanism for bulk data transmitting in high bandwidth-delay network. However it has a big rate oscillation when...
More and more streaming protocols are developed for the multimedia applications. However, many streaming protocols only consider the network stability, but not the characteristics of streaming applications. In order to cooperate with H.264/MPEG-4 AVC scalable extension which can achieve fine granularity of scalability at bit level to the time-vary heterogeneous networks, we design a TCP-friendly congestion...
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