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The appearance of smart phones and their continuing rapid uptake has large affects on our society in as much as they represent a paradigm shift in the traditional industrial structure. The Telecom market is changing day by day, networks with the complicated and varied traffic have almost reached capacity because of the rapid increase of user and the service releases on smart phones. Therefore, the...
While gracefully combining FMIPv6 and HMIPv6 together, F-HMIPv6 enables the best performance in terms of handover latency and signaling overhead. Recently, to protect F-HMIPv6, Kang and Park proposed a security scheme. This scheme successfully achieves seamless integration with FHMIPv6 while providing the session key exchange as well as the mobile node authentication. In this paper, Kang-Park's scheme...
Internets has severe problem in security and mobility because it use the only unique source IP address and destination IP address during the process of communication all the time, IP address is overloaded in semantics because it is used to represent both the location and the identity of a user, so a new mechanism should be proposed. Although there are many researchers have done lots of extensive and...
OMA DS is used by the Content Storage Client and the Content Storage Server for synchronization, as defined in the OMA CPM Architecture. But most of the Synchronization systems are designed for flat structure data, which cannot be applied to the synchronization of hierarchical directory structure in CPM (Converged IP Messaging) directly. In order to fulfill the requirement of content synchronization...
With the lead of the Rich Communication Suite (RCS) initiative under the GSMA umbrella, Orange wants to drive the commercial introduction of a new convergent communication suite for the mass market. The underplayed IMS core network provide a powerful infrastructure for the deployment of such innovative suite addressing both mobile and internet access. The commercial specifications are based on the...
As integration of heterogeneous networks has become one of the most important characters for next-generation networks, it becomes a very challenging issue to ensure effective handoff when mobile node moves between different heterogeneous networks. In this paper we propose an effective handoff mechanism based on location information. By processing geographical data (consisting of information about...
We consider variations of a problem in which data must be delivered to mobile clients en-route, as they travel towards their destinations. The data can only be delivered to the mobile clients as they pass within range of wireless base stations. Example scenarios include the delivery of building maps to firefighters responding to multiple alarms, and the in-transit ldquoilluminationrdquo of simultaneous...
There is a great surge of interest recently in the fixed-mobile convergence from the telecom industry. This is supported by strong 3G operator interest in using the broadband penetration as a spring board to achieve cost effective delivery of the multimedia data for indoor coverage. Statistics indicated that more than 70% of the calls are made from end-users in indoor environments. Based on this trend,...
As wireless technologies have grown, many people want to use wireless networks during movements. Accordingly, Mobile IPv6 was developed by the Internet Engineering Task Force to support the mobility service. However, Mobile IPv6 cannot satisfy requirements of real-time applications such as video streaming service and VoIP service due to its high handover latency. To address this problem, Proxy Mobile...
The main architectural problem with the current inter-domain routing model is the overloading of IP addresses due to their use for identification, location, and forwarding. This makes it hard to support the need for multi-homing, traffic engineering, and mobility while maintaining address hierarchy that is essential for scalable routing. Thus, there is a need to separate identifiers from locators...
Accounting is a key task in commercial networks. With the increasing number of IP-based services and mobility support, accounting needs to evolve towards an integrated, service-oriented accounting approach in a mobile environment. Therefore, this dissertation digest paper presents the Service-oriented Tailored Accounting Configuration (STACO) architecture that enables a service-oriented accounting...
The 3GPP Multimedia Broadcast and Multicast Service (MBMS) for mobile networks enables the efficient distribution of files to a large audience using point-to-multipoint transmission. MBMS provides the so called file delivery service for this purpose. Residual errors are not tolerable in the received data of the file. Application Layer Forward Error Correction (AL-FEC) and transmit power need to be...
This paper presents IMS architecture resulting from SYSTERMIN@L, a project running from mid 2007 to mid 2009. The project addresses services and network convergence from the customer terminals point of view: ldquoselect all your services on the terminal wherever you are.rdquo The basic idea is to consider terminals interacting in a system configuration as opposed to independent standalone devices...
In this paper, we perform experiments on interoperability testing of presence service on IMS platform. Open source implementations such as an IMS platform, a presence server, an XCAP server, and IMS clients are deployed to establish testbed for interoperability testing of presence service. Test cases for SIMPLE presence protocol developed by OMA are applied to our testbed and test results are analyzed...
The IP Multimedia Subsystem (IMS) defined by the 3rd Generation Partnership Project (3GPP) is the architecture merging the Internet and mobile worlds. The IMS enables new business models and allows third-party developers to make their applications available to all IMS users. This paper introduces an IMS testbed called ImsInnovation, which was launched in Summer 2008. The objective of the testbed project...
In our article, we present NFCSocial, a mobile application prototype which uses the near field communication (NFC) technology to ease the update of presence information on federated communication systems and social networks. We discuss some technical choices we made in order to use contextual information retrieved via NFC in our application and to connect to an IP multimedia subsystem (IMS) network...
In this paper we address the handover scheme based on the Session Initiation Protocol (SIP) for IMS applications and services. The existing SIP handover tends to suffer from the poor handover performance due to larger handover latency. To solve this problem, we propose a fast handover scheme based on network agent. In the proposed scheme, the SIP handover latency could be more reduced by using a new...
SIP is able to support MH mobility at the application level using a redirect server. SIP, however, performs signaling on the basis of an open network, the Internet. Thus, it is exposed to security threats that do not exist in a closed network such as PSTN. Although much research concerning SIP security threats have been conducted, studies regarding security threats under a SIP application-level mobility...
The development of location and context-aware applications is greatly facilitated by the use of context-provisioning middleware. However, development of such applications still remains a challenge from the point of view of software engineering. In this paper we present MoCA, a service-oriented middleware architecture that supports the development and deployment of distributed context-aware applications...
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