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The success of telecom operators is based on several criteria including but not limited to the diversity of services. The competition between operators is needed to improve and ensure customers loyalty by providing interesting services. For this purpose IP Multimedia Subsystem (IMS) has been a major work effort of the 3GPP (3rd Generation Partnership Project) standards bodies for several years now...
According to the various mobility, the resource allocation, interference, and the characteristics of heterogeneity and ubiquity of access network based on the next generation network, namely, the network IMS (IP Multimedia subsystem), have imposed several challenges. In regard to mobility management, handover management, and Quality of Service (QoS) provisioning, this paper proposes an adaptive environment...
3GPP defines the Policy and Charging Control (PCC) architecture to enforce network resources dynamically and to manage charging functions. In this paper, we present the design and implementation of Group Accounting System (GAS). GAS is based on the PCC architecture and is integrated with the IP Multimedia Subsystem (IMS) of Chunghwa Telecom. GAS allows a group of people to share one or more accounts...
This paper propose an overlay interoperability technology for introducing the concept of Peer to peer (P2P) communications in the context of IP Multimedia Subsystem (IMS) enabled interactive broadcasting networks (iDVB-T), bearing the following: a) user initiated conception of communication applications paradigms and deployment, b) access of users on P2P applications from any rural-access network,...
The Future Internet is an initiative driven by the idea of restructuring the chaotic and unorganized Internet. Current service environments within the Internet are missing important capabilities like performance elasticity, scalability, reliability or seamless interoperability between service providers. The Internet has to become a more secure space enabling new approaches for Quality of Service and...
The scope of IMS QoS management is limited to session initialization and QoS provisioning, thus lacking follow-up or monitoring functionality; neither does it tackle user differentiation. A tempting approach would be to leverage the standard 3GPP architecture by Assurance services based on TMForum's eTOM framework. This scenario would however expose a set of general business processes and would require...
This paper discusses the viability of using Session Initiation Protocol (SIP) transport for Smart Grid signaling. Smart grids will jointly optimize energy production and demand, in a scenario with millions of smart meters and microenergy sources (e.g. solar panels or electric cars). This will place stringent requirements on telco networks. Information technologies will have to provide scalable signaling...
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...
The entire telecommunications and services world has focused its attention on the newest 3GPP architecture, 4G. Proposing high speed data transfer, all flat-IP network for the core systems and stronger authentication and AAA methods, this architecture seems to be the answer for the mobile networks of the future. Another architecture described by 3GPP as well, but based on IETF standards is the IMS...
In the shared environment of multimedia files of an IP multimedia subsystem (IMS) system, the issue of quickly obtaining the desired files from various heterogeneous networks presents a challenge. There are many studies on information-sharing mechanisms and bandwidth estimation methods in the IMS environment; however, most focused on how to effectively take advantage of network bandwidth to more quickly...
Mobile networks are being evolved from 3.5G to 3.9G/4G, integrated into IP core network based on IMS (IP Multimedia Sub-system). In this environment, it is essential to provide sufficient QoS(Quality of Service) mechanism which enables different services to provide enhanced user satisfaction. In this paper, we propose a new QoS mechanism providing adaptive resource allocation based on each user's...
The 3GPP-defined IP Multimedia Subsystem is becoming the de facto standard for IP-based multimedia communication services. It consists of an overlay control and service layer that is deployed on top of IP-based mobile and fixed networks, in order to enable the seamless provisioning of IP multimedia services to 3G users. Service differentiation, which implies the network's ability to distinguish between...
Telecom based service providers are relentlessly trying to accelerate their service offerings to match the pace at which the users are embracing the Web. In reality IMS based Telecom and Internet based Web 2.0 networks have their own advantages and need to co-exist to create an enriched user experience. The convergence of IP Multimedia subsystem (IMS) based Telecom and Web 2.0 based networks is slowly...
With the evolution of the IP Multimedia Subsystem (IMS), service interaction and management has received an increasing amount of attention. Service Capability Interaction Management (SCIM) is introduced as a component of Service Delivery Platform (SDP) for providing service interaction of IMS. Although there is much work on the standardization of SCIM, architectures based on industry standards like...
IMS as promising NGN architecture has to deal also with service availability because of its importance to customers. Its service-oriented architecture enables easy deployment of our proposed Service Sharing System (SSS) which enhances availability of offered services and brings their categorization and browsing. While usual approach of operators is to build own networks and services, SSS allows operators...
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...
IMS, the core architecture of NGN, becomes more and more important in modern telecommunication network. It is the main driving force to promote the evolution of telecommunication technology to "All IP" network. However, it is a big challenge that how to provide carrier grade service on best effort IP network. To solve this problem, SDOs (Standards Development Organizations) have developed...
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...
IP Multimedia Subsystem (IMS) is very important due to the critical role it plays in the Next Generation Network (NGN) of the Fixed and Mobile Networks. Voice traffic in IMS will be served using Internet Protocol (IP) which is called Voice over IP (VoIP). This paper uses the "E-Model", (ITU-T G.107), as an optimization tool to select network and voice parameters like coding scheme, packet...
IP Multimedia Subsystem (IMS) known for its prominent service delivery is paving way for applications like Video Voice over IP (VVOIP) on handheld devices too. Android, a software platform from Google, pioneering in middleware and applications domain of handheld devices does not offer support for IMS services by design. Motivated by these observations, we present novel scalable architecture to cater...
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