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Emailing has been and it is still continue to be the most common way for many people to share information using texts and/or with attachments. More popular alternatives nowadays are using the Instant Messengers (IM) and online community networks which convey presence information and provide higher degree of interactions with richer multimedia experience. However, these existing systems involve human...
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,...
Session Initiation Protocol (SIP) has been widely applied to multimedia telephony service in Broadband Converged Network (BCN). SIP is also adopted as the basic signalling protocol of VoIP and 3GPP. IP multimedia subsystem (IMS) is a SIP based multimedia telecommunication infrastructure in 3GPP. Recently, many mobile operators have selected IMS as a core infrastructure because IMS has a flexible architecture...
The IP Multimedia Subsystem (IMS) is a telecommunication middleware architecture that behaves as a docking station for a wide range of multimedia services. Several so-called killer applications have been envisioned for this platform such as multimedia group communications and location based services (LBS), but one of the most common business cases for IMS remains IPTV (Internet Protocol TV). Several...
In this paper we describe a new service that allows multimedia sharing between UPnP terminals connected to remote networks. The service grants the confidentiality of users' contents since they are still stored in the home network. Our approach uses IP Multimedia Subsystem (IMS) framework to establish a secure HTTP session between remote devices. A new Remote Access Application Server is deployed in...
Mobile users' demand for using the best available network connection encourages mobile network operators (MNOs) to construct multi-access networks managed by all-IP based mobile networks. For such an MNO, the IP Multimedia Subsystem (IMS) is a promising service control infrastructure to provide IP-based multimedia services with QoS guarantee in the multi-access network. The service centralization...
Introducing Peer-to-Peer (P2P) technology into IP Multimedia Subsystem (IMS) is hard but important, especially to the streaming media service. Based on the strength analysis of IMS and P2P, three solutions with the features of signaling centralized and media distributed are compared, and eventually the solution of managing P2P via application server is selected. For the purpose of reusing the public...
The IP Multimedia Subsystem (IMS) is considered the current Service Delivery Platform standard for providing multimedia services in Next Generation Networks (NGN). Although fleet management services are traditionally focused on voice communications, they are evolving towards broadband multimedia ones. For this reason, this paper presents an open IMS-based platform that provides advanced multimedia...
Rapid growth and evolution in the area of telecommunications has compelled the network operators to provide seamless integration of all communication applications on a single system. In these circumstances IMS has established itself as a foundation for future wireless and wireline convergence. It provides an opportunity to build an open IP based service platform that will enable an easy and efficient...
In this paper we present the experimental findings in comparing standard IMS with proprietary non-IMS solution from the aspects of session control mechanisms and service management capabilities support in the context of providing automated converged services. The methodology used in the experimental study is via developing an automated converged communication service called CommRobot (Communication...
The IP Multimedia Subsystem (IMS) is being widely adopted as the standard service delivery architecture for Next Generation Networks. The IMS delivers rich IP-based multimedia services to end users. In order to fully utilize the potential of the IMS, the convergence of the World Wide Web and IMS capabilities is imperative. Services composed of Web 2.0 technologies and IMS based call control and multimedia...
The present paper describes practical experience gained with IMS based fixed mobile convergence (FMC) network deployment at TDC Denmark. The paper also takes a look into the near future, showing trend in technology. This network deployment, including the FMC component, is a joint project between TDC Denmark and Ericsson. The FMC implementation offers advanced services to enterprise users. Enterprise...
IPTV is considered as one of the killer applications in the future. Many standardization organizations such as ITU-T and ETSI are working on standardizing the Next Generation IPTV system. Basically, two different approaches have been defined for Next Generation IPTV system, namely IMS-based solution which reuses the IMS core components as its service controller, and non-IMS approach which has its...
The adoption of the IP Multimedia Subsystem (IMS) has faced a number of challenges. Furthermore, countries with developing infrastructure face additional difficulties. It is important for such countries to overcome these obstacles in order to adopt Next Generation Network (NGN) architectures and compete globally with operators offering IMS services. Funding the deployment of NGNs is a major hurdle...
The IP multimedia subsystem (IMS) is a network functional architecture that is seen as a promising solution for facilitating multimedia service creation and deployment, as well as supporting interoperability and network convergence. IMS allows network operators to play a central role in traffic distribution, therefore being more than ??bit pipes??. The move towards all IP architecture for service...
Billing, charging and accounting are the most critical operational support activities for any telecommunications network operator. Through these activities operators recover costs for service provision, and make business profits. IMS charging is required at the services level as well as the transport level. In networks with QoS guarantees, it is necessary for user preferences of service quality levels...
The IP Multimedia Subsystem (IMS) brings more functionality into communication networks and allows them to offer a range of services beyond the mere transport of media. IMS standard multiparty services include audiovisual conferencing and Push To Talk (PTT/PoC), which are powered by specific (and expensive) servers performing media handling functions in a centralized manner. These multiparty services...
Due to the system obturation, surveillance service based on dedicated network can not be accessed by different network technologies and has no mobility. The surveillance application based on Internet can not provide security and QoS guarantee. This paper proposes a new architecture which is based on IP Multimedia Subsystem (IMS), and analyzes the advantages of the introduction of IMS. Furthermore,...
Video call capabilities in 3G mobile handsets and higher data rate in 3G UMTS networks are fuelling resurgence in video telephony. This enables the delivery of exciting video applications to subscribers. The addition of interactive voice and video response (IVVR) opens up a wide stream of interactive video applications. In this paper we present a comparative study on the encoding tools and the techniques...
Providing seamless handoff in session mobility is a challenging, and vital, issue relating to the heterogeneous next generation all-IP networks. The research work outlined by this paper describes a solution to support seamless video handoff in session mobility over IP multimedia subsystem (IMS) networks. Our system is built on top of an IMS network, which we believe to be the best platform for session...
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