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The Internet has now become such an important infrastructure that is capable of sending information within a very short time and easy to access. It is considered as public networks that provide affordable WAN services to most customers. Applications such as video conferencing, file transfer protocol and VoIP are the example of typical network applications supported by the Internet Protocol. Various...
Due to the US Government's cancellation of the Transformational Satellite Communications (TSAT) program, Internet Protocol (IP) networking using Military Satellite Communications (MILSATCOM) is not currently planned. In order to support military IP based communications over MILSATCOM systems; affordable, effective and efficient solutions must be developed. An alternate near-term MILSATCOM networking...
In a scenario where service reliability is achieved through multiple providers, it is crucial to detect faulty equipment. Such a scenario is the IP Multimedia Core Network Subsystem (IMS). where service is provided by multiple instances of the Application Server (AS). These servers may reside on remote locations, and network link between the Call Session Control Function (CSCF) and AS may become broken...
IMS (IP multimedia subsystem) is a main trend of development NGN. The base of IMS is an Internet Protocol which initially did not provide support for quality of service. However, for the transmission of multimedia streams is necessary to ensure a given level of quality of service (QoS). Therefore, IMS QoS estimation is a necessary task but a high complexity of network topologies and a large number...
Group communication plays an important role in the distribution of real-time data for IPTV, multimedia conferencing, or online multiplayer games, but IP multicast remains unsupported in today's global Internet. Hybrid solutions that bridge between overlay and underlay multicast are a promising escape from the deployment dilemma of multicast. In this paper, we examine the real-time capabilities of...
In this paper, we examine a new kind of P2P traffic localization approach exploiting the peer selection adaptation (i.e., preferring peers who are likely to provide better performance), called Netpherd. Netpherd tries to affect the peer selection adaptation to localize the P2P traffic by manipulating the network performance. To manipulate the network performance, Netpherd adds an artificial delay...
Resolution from identifiers to locators serves as a key component of mapping-based mobility solutions. In this paper we address the weakness of current resolution methods in supporting diverse mobility scenarios and propose a Global Resolution Service offered by Resolution Service Providers. We present a preliminary design and simulation, and results show that our approach is able to provide better...
The ability to localize Internet hosts is appealing for a range of applications from online advertising to localizing cyber attacks. Recently, measurement-based approaches have been proposed to accurately identify the location of Internet hosts. These approaches typically produce erroneous results due to measurement errors. In this paper, we propose an Enhanced Learning Classifier approach for estimating...
Named Data Networking is a new concept that takes a fundamentally different approach to what is found in Internet Protocol (IP) network systems. IP-type networks name locations (in the form of IP addresses) to route messages to destinations when sending data. Named Data Networks (NDNs), on the other hand, are primarily concerned about the data itself and not necessarily about the locations where the...
This paper examines different traffic splitting strategies for multipath IP networks. The question is whether today's widely deployed algorithms perform well in all situations. We have implemented in a simulator and analyzed different well-known algorithms. Throughout our study several kinds of traffic traces have been used: real ones captured at backbones as well as at access networks, and specially...
In the last few years, a large variety of wireless components are increasingly running applications that need real-time and high-bandwidth features. Hence, it is imperative for network service providers to make the best possible to ensure seamless roaming through different wireless technologies. In this context, mobility management remains an important task to be investigated to improve Quality of...
Mobile users are increasingly demanding multimedia content created specifically or at least tailored to cater for their needs and preferences. In this scope, context-sensitive networking embeds promising technologies for allowing the design of personalized multiparty service applications. The Context Casting (C-CAST) project designed context-sensitive network architecture to support personalized multiparty...
Tactical mobile ad hoc networks have a hierarchical organization with soldiers reporting to their group leader and from them to the command center. In such a network, it is important to prioritize the traffic associated with the leaders without starving other essential communication in the network. To support such a feature, we propose a hybrid routing protocol, named as “Rank-aware Tree-based Geographical...
Internet research community has proposed many different multicast routing protocols to support efficient multimedia application such as, IPTV, videoconferencing, group games. Nevertheless, the design of all these protocols does not take into account that group members may be mobile. Indeed, with the arrival of Mobile IPv6 by IETF providing mobile users with continuous access, group members in the...
There will be a great of Heterogeneous networks in Next Generation Network. Mobile Satellite system (MSS), great supplement of terrestrial network, provide large scale network coverage and is able to support IP multimedia services. We propose a SIP-based soft handoff scheme for integrated architecture of MSS and UMTS, as well as add satellite access gateway (SAG) in satellite station and terrestrial...
Wireless links are often asymmetric due to the heterogeneity in transmission power of devices, the limitation of node energy, different antenna gain among nodes and non-uniform environmental noise. Nevertheless, most of the routing algorithms for ad hoc networks assume that all wireless links are bidirectional, such algorithms are not able to react to or exploit the full connectivity of the network...
As the world is moving towards the “Internet of Things” [1], Internet Protocol enabled wireless sensor network is becoming an important research area. In order to make it possible and to facilitate transmission of IPv6 packets over low powered networks, 6LoWPAN [9,11] has been introduced. 6LoWPAN incorporates an adaptation layer between network and data link layers. Two routing schemes are used in...
This paper deals with analysis of relation between packet delay variations (jitter), length of jitter buffer and final voice transmission quality. For adjusting of IP channel network emulator NISTNet is used. For adjusting of buffer length VoIP client Linphone is used. Criterion of transmission quality is a MOS parameter investigated with an algorithms ITU-T P.862 PESQ and P.863 POLQA.
We present a solution to evaluate the performance of transport protocols as a function of link layer reliability schemes (i.e. ARQ, FEC and Hybrid ARQ) applied to satellite physical layer traces. As modelling such traces is complex and may require approximations, the use of real traces will minimise the potential for erroneous performance evaluations resulting from imperfect models. Our Trace Manager...
With the explosion in traffic consumption, the limitations of centralized mobility protocols became a concern. As a result, the concept of distributed mobility management (DMM) emerged. Basically, DMM brings the mobility anchors closer to the users, avoiding issues as single point of failure and non-optimal routing. On the other hand, IP multicast, being designed for efficiency, is a key method for...
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