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We study how much energy can be saved by reshaping audio streaming traffic before receiving at the mobile devices. The rationale is the following: Mobile network interfaces (WLAN and 3G) are in active mode when they transmit or receive data, otherwise they are in idle/sleep mode. To save energy, minimum possible time should be spent in active mode and maximum in idle/sleep mode. It is well known that...
This paper presents a hybrid congestion control algorithm supporting throughput efficiency, TCP friendliness and RTT fairness, in order to provide highly smart multimedia streaming over the Internet. Recent studies on TCP and TFRC are evolving to achieve better throughput efficiency and RTT fairness. Examples are Hybrid TCP congestion control, VTP and TCP-Libra, where the former two improve throughput...
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...
Streaming media application has attracted more and more attention nowadays. However, how to improve the quality of service (QoS) for streaming media application is still a challenging issue. The emerging transport protocol - Mul-TCP Friendly Rate Control (MulTFRC), which gives different priorities to data flows, could be used in streaming applications or similar use cases. On our test bed, some streaming...
High quality and sustained multi media experience is expected to be a major feature of the Future Mobile Internet (FMI). Currently deployed novel mobile network technologies such as LTE (Long Term Evolution) make use of the Internet and its best-effort TCP/IP protocol stack to enable applications. The orientation towards TCP/IP is logical due to the success of the Internet. However, TCP/IP still provides...
A number of different approaches exist to deliver multimedia content to the end-user through the Web. Within classic client-server architectures, three main media delivery methods exist: HTTP download, real-time streaming, and HTTP streaming. The latter combines the advantages of both the HTTP download and the traditional streaming approach. In this paper, we provide an overview and analysis of two...
IP multicast has proved to be the best approach for large scale multimedia communications enhancing video transmissions for applications like IPTV, video conferencing or other best-effort real-time audio/video applications. IP multicast connectivity, unfortunately, relays on certain network technologies and protocols and is present only in some areas of the Internet, while the majority of hosts lack...
TCP is an important communication protocol as more and more multimedia technologies are deployed in the Internet nowadays. However, existing TCP control mechanism has some shortcomings in supporting real-time streaming traffic. Although UDP can be used as an alternative to transmit real-time application data, it lacks congestion control. Introducing a new TCP-friendly protocol that supports the multimedia...
This paper proposes an architecture for forming a parallelization network composed of anonymous web clients - those users anonymously browsing a website. This architecture is layered on conventional HTTP-based web applications to organize their clients as computing nodes in a massively distributed computation. The key technology of this architecture is a dynamic installation mechanism for a media...
Heterogeneous communication networks with their variety of application demands, time-varying load, and mixture of wired and wireless links pose several challenging problems in modeling and control. This paper focuses on estimation of the round trip time which is important for the transport layer because it impacts the throughput of TCP and allows efficient development of congestion control techniques...
Overlay networks are opening up new ways for Internet usability, mainly by adding new services that are not available or cannot be implemented in the current Internet. Overlay networks use application level switches of intermediate nodes. However, the designs of overlay network are based on store-and-forward principles maintained by split TCP connections of hop-by-hop approaches and this can increase...
The finding by Maier et al that Network News Transport Protocol (NNTP) traffic is responsible for up to 5% of residential network traffic inspires us to revisit today's Usenet usage. For this purpose we have developed an NNTP analyzer for the Bro network intrusion detection system. We find that NNTP is intensively used by a small fraction of the residential broadband lines that we study and that almost...
Multimedia streaming is increasing in popularity and has become one of the dominating services on the Internet today. Even though user devices are often equipped with multiple network interfaces and in reach of several access networks at the same time, media streams are normally communicated over only one of the available Internet connections. In this paper, we explore the challenges and potential...
In our previous work, a hybrid architectural scheme was proposed to migrate Web sessions between PCs. Only the client-side of the work was however achieved. The work included developing a Web browser extension and creating a new service, namely content sharing and session handoff. This further research explores the proxy-side of the architecture. It entails creating new services that prevent abuse...
With the growing of internet service, multimedia applications require higher communication speed. The network traffic has rapidly increased that produces amount of interrupts, memory copies and checksum calculation in end system. The CPU workload is heavy and the processing of network protocol task is the bottleneck. In this paper, we propose a UDP/IP ASIC to accelerate networking multimedia transmission...
3G is the abbreviation of 3rd Generation. Meaning the third generation mobile communicating technology. It is that the new generation of mobile communicating that being tied in wedlock multi-media between mobile communication system and internet technology. The test has discussed the research and application of distance learning based on 3G network, and has analyzed the main technology and the structure...
Today, there's a growing trends to broadcast and stream multimedia files over the internet due to low cost of transmission. Protocols divide transmitted data to packets but problem was, with the limited bandwidth, which leads to the delay of the received image. We propose a framework for data transmission that overcome the limited bandwidth problem. The major feature of the framework is decreasing...
Effective multicast congestion control mechanism is urgently needed with the development of multimedia applications in Internet. Based on the analysis of the present layered multicast, a TCP-friendly active layered multicast congestion control mechanism with rapid self-adaptation at receivers called ALMCC is proposed. It uses active label layering and adapts to the bandwidth of network rapidly at...
Although TCP is one of the key protocols of the Internet infrastructure, it is not optimized for either wireless environment or multimedia streaming applications. It fails to meet the service requirement of streaming applications because of its strict adherence to congestion control. Besides, non-congestion packet loss fools TCP to slow down its sending rate over wireless links. Fast TCP and TCP Westwood+...
Network usage of public communication networks such as Internet are unpredictable. TCPFriendness or similar criteria can become mandatory in future Internet transport protocols to prevent an Internet collapse produced by UDP based multimedia, teleoperation or NCS flows. Deadband sampling reduces the control data sent to the network, for an efficient use of the communication medium and minimizes time...
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