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This paper considers the problem of managing and maintaining the quality in communication networks. The significance of the end-to-end quality control on all network layers is shown. The problem of projection of the quality of experience requirements posed by customers on the plane of quality of service metrics is stated. Multilevel quality relationship model corresponding to the current state-of-the-art...
In this paper we give some background to how the long-lasting discussion on separation of identifiers and locators in networking has influenced the Information-centric Networking (ICN) research. We start with a historical retrospect of the id/locator discussion. We then address the problems that have been fueling the discussion followed by a chronological walkthrough of a number of id/locator split...
New time-slotted subwavelength switching paradigms have been proposed as promising solutions to exploit the subwavelength bandwidth overcoming many limitations of traditional optical burst switching (OBS) schemes. Since these new paradigms are based on fix-sized bursts transmitted during time slots, the efficient assembly of IP packets into optical bursts is the first mile stone to reach in the way...
Application classification from Netflow traces is a challenging process due to the lack of payload information. It is even becoming more challenging when the applications running in the network tend to hide under well known ports, encrypt packets and are distributed. In this paper, we propose an in-the-box apparatus for Netflow classification of Bit Torrent applications. The apparatus includes several...
This paper presents an investigation into a new peer-to-peer network architecture for real time tele-haptic operation in distributed virtual environments (DVEs). A novel force collaboration and position synchronization algorithm is developed in order to support networked haptic interactions. Network impairments such as time delay, jitter and packet loss each have different (and severe) impacts on...
There is an exponential rise in awareness, reliance and usage of the Internet protocol (IP) network. The advent of multimedia applications on the IP network, such as, voice over IP, streaming audio and video, etc, has contributed immensely to the congestion on the broadband network. The increase in the number of users who rely on peer to peer (P2P) protocols to allow transfer of very large files and...
Video is one of the most popular services in Internet. How to support large scale of streaming media transfer over the Internet has been studied in both academic communities and industry fields. VQM (Video Quality Monitoring) at the end point or in the network is necessary to improve customer's Quality of Experience (QoE). This paper first analyzes the requirements of VQM over the Internet. Then,...
In the IMS-based NGN service platform, live streaming is an important value-added service. But the distribution of streaming media is a difficult problem because of its massive bandwidth requirement and real-time requirement. Since IP multicast needs to update the whole network routers, this paper introduces P2P technology into live streaming system, which leverages the IP-based policy control and...
Hydrocarbon Process Automation Applications (HPAA) are used in industrial plants that operate under conditions that - if not controlled - could become dangerous for people, assets and the environment. Process control systems that support the necessary functions to achieve and maintain a safe steady state HPAA operation are referred to Safety-Related (SR) systems. These systems are composed of sensors,...
The potential increase in the popularity of greedy software such as download accelerator software and greedy application such as P2P leads to a significant demands for reconstruction of the old fashion max-min fairness definition. Furthermore, these applications and software monopolize network bandwidth and hence result in magnificent degradation in the performance of real-time application such as...
This tutorial reviews the significant advancements in photonics system, technology, standards, and associated evolution of network architectures starting from long-haul, and more recently multi-service metro networks, and extending into the emerging IP-over-WDM core and packetoptical metro networks. We first analyze the functional characteristics and challenges of these networks, and review the current...
Research in traffic classification has become more challenging with the emergence of new applications and new ways to hide the true nature of traffic. The accuracy of traffic identification methods has also become more important due to the greater use of delay sensitive applications such as VoIP and video over IP which need to be identified and given priority. Traditional techniques such as header...
Triple-play services and P2P IPTV have not only led to an increasing demand for bandwidth in broadband access networks, but also to the need for new service delivery architectures. The choice of an appropriate architectural approach and sizing model for the aggregation network is studied in this paper through cost optimization models, which encompass aspects of non-stop delivery, service flexibility,...
When extending peer-to-peer live streaming system to IEEE 802.11-based wireless network, service guarantee for inter-domain movement is an obstacle since IEEE 802.11 has no QoS maintenance mechanism for it. The stream system must consider it itself. As a peer roams among adjacent networks, the streaming service will be interrupted by the disconnection of wireless network path and IP address changes...
Multicast technology introduces a number of new applications; meanwhile, it reduces the congestion of the network and releases the burden of the server. Those characteristics, such as reducing the occupied bandwidth, reducing server load, improving the quality of data transmission, are especially applicable to the needs of large bandwidth multimedia applications such as audio, video. This new technology...
Streaming video over the Internet, including cellular networks, has now become commonplace. Network operators typically use multicasting or variations of multiple unicasting to deliver streams to the user terminal in a controlled fashion. An emerging alternative is P2P streaming, which is theoretically more scalable but suffers from other issues arising from the dynamic nature of the system. User's...
Peer to peer (P2P) technology has dramatically transformed the landscape of the Internet traffic in recent years, which induces greatly attention and research on the deployment of P2P-based applications in heterogeneous networks. Indeed many obstacles still lie ahead. The main objective of this paper is to present a new method to deploy the most promising P2P technologies for heterogeneous networks...
Wireless mesh networks are being widely deployed around the world as a mean to provide low-cost access to the Internet. The high capacity at mesh routers nodes allows applications such as real time multicast over WMNs. In light of the slow development of IP multicast and the rise of peer-to-peer communication, implementing multicast capability at the application layer is imminent. QoS support for...
We analyze two commercial peer-to-peer (P2P) video streaming systems via active measurements: a tree-based overlay multicast and a mesh-based overlay. Our controlled IP test-bed allows us to reproduce near-identical network conditions for both the systems and to test them under varying network conditions and peer behavior. We report on the bandwidth efficiency of these P2P video streaming systems...
The critical issue of P2P models for supporting Internet telephony are: users localization and their ldquoasynchronousrdquo nature. In this paper, we propose a new P2P-SIP architecture for Internet telephony; aims to support the asynchronous model that generally characterized P2P systems. The purpose is to optimize the global end-to-end delay, which is one of the main performance metrics for telephony...
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