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Over the last years the IP Multimedia Subsystem (IMS) has continuously gained in importance as the next generation communication network. The Session Initiation Protocol (SIP) was chosen the signaling protocol for session establishment and control in IMS. Losses caused by network or server overload would cause retransmissions and delays in the session establishment and would hence reduce the perceived...
With the advancement of Internet technologies and the widespread use of mobile devices, the number of users in conferencing services is increasing quickly. A P2PSIP conferencing system and an IP Multimedia Subsystem (IMS) conferencing system have been designed to provide conferencing services. The IMS conferencing system was developed to adapt to a server-based centralized system, while the P2P network,...
This paper presents an innovative solution for the deployment and management of vehicular services based on IP Multimedia Subsystem (IMS). We justify our proposal by analysing the advantages of IMS applied in vehicular scenarios. For this purpose we have designed and experimentally developed a platform that consists of an IMS Core, advanced enablers and two IMS Clients. We demonstrate the potential...
The file download process over Internet is usually slow. This paper presents design and simulation of a distributed and co-ordinated file transfer protocol for the Internet applications. Presented approach, known as hybrid parallelized file transport protocol (HPFTP), consist of a centralized server that distributes the download process across multiple file servers based on QoS parameters as available...
The session initiation protocol (SIP) is widely used as the signaling protocol for various services in the ubiquitous environment of the home network. SIP is a text-based protocol with characteristics of unordered and verbose headers, variable-size message, case-insensitive keyword etc., which imposes challenges for an efficient message processing. Thus, the ability to process SIP messages quickly...
The convergence of telecom and Internet are yet to be matured enough to effectively solve the major challenges, like quality of service, different kinds of charging, and security. IP multimedia subsystems (IMS) techniques are one of the strong contenders to solve the above problems by proposing overlay network architecture. It is imperative to find out an optimum network design to support rapidly...
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