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检索条件"任意字段=International Conference on IP Multimedia Subsystem Architecture and Applications"

共 839 条记录，以下是251-260 订阅

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Enhanced Next-Generation Service Overlay Networks architecture

Enhanced Next-Generation Service Overlay Networks architectu...

引用

international conference on Internet multimedia Services architecture and applications, IMSAA

作者： Christian Makaya Ashutosh Dutta Ben Falchuk Dana Chee Subir Das F. Joe Lin Manabu Ito Satoshi Komorita Tsunehiko Chiba Hidetoshi Yokota Henning Schulzrinne Telcordia Technologies Inc. Piscataway NJ USA Research and Development Laboratories KDDI Saitama Japan Columbia University NY USA

The Web Services composition paradigm has been widely used in Information Technology (IT) and Internet environments to create Web applications that both flexible and rapidly deployable. Web Services are a key way to realize Service-Oriented architectures (SOA). In Telecom, on the other hand, the IMS (ip multimedia subsystem) architecture enables valued-added services composition for ip-based networks. Several ongoing efforts - referred to as “SOA for telecom” (SOA-TEL) - are attempting to merge SOA with telecom. The objective of these attempts is to enable Telecom operators and service providers to re-use existing service building blocks while building valued-added converged Web and telephony services. These services offer seamless experiences across various networks and, therefore, richer experiences, but are more complex than typical Web Services (e.g., transaction-based). The IEEE Next-Generation Service Overlay Networks (NGSON) working group is focusing on this integration and an architecture has been proposed. In addition, NGSON specifies context-aware, dynamically adaptive, and self-organizing networking capabilities. There are, however, a number of shortcomings in the NGSON architecture. This paper identifies these shortcomings and describes a possible solution. Finally, we discuss an illustrative use case scenario to help bring clarity to our proposed “enhanced” NSGON architecture.

关键词： Games Service oriented architecture Next generation networking Computer architecture ip networks

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A Case Study on Multiparty Calls Differentiation in the ip multimedia subsystem

A Case Study on Multiparty Calls Differentiation in the IP M...

引用

IEEE conference on Vehicular Technology (VTC)

作者： May El Barachi Roch Glitho Rachida Dssouli University of Quebec Canada Concordia University Canada United Arab Emirates University UAE

The ip multimedia subsystem (IMS) is a key component of 3G networks aimed at enabling the seamless provisioning of ip multimedia services to end users. Multiparty sessions (or conferences), which enable the conversational exchange of multimedia content between several parties, represent one of the specialized services supported by the IMS. Conferencing is the basis of a wide range of applications such as: debating; multiplayer gaming; and distance learning. In order to offer users a predictable experience and a controlled quality when using such applications, suitable QoS mechanisms must be supported in the IMS. We have previously proposed a two-party call differentiation scheme along with an architectural framework enabling its realization in the IMS. In this work, we apply our call differentiation scheme to the conferencing case, by studying the effects of call differentiation on the operation of the standard IMS conferencing architecture. This is achieved via a case study including the definition of a differentiated IMS conferencing architecture, the elaboration of various differentiated multiparty sessions scenarios, and the implementation of a proof-of-concept prototype.

关键词： Quality of service Prototypes Computer aided instruction Streaming media Decision support systems Videoconference Communication system traffic control conference management Centralized control

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DCNET 2010 OPTICS 2010 - Proceedings of the international conference on Data Communication Networking and international conference on Optical Communication Systems

DCNET 2010 OPTICS 2010 - Proceedings of the International Co...

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international conference on Data Communication Networking, DCNET 2010 and international conference on Optical Communication Systems, OPTICS 2010

ISBN: (纸本)9789898425256

The proceedings contain 23 papers. The topics discussed include: security analysis of TCP/ip networks - an approach to automatic analysis of network security properties;enhanced handover mechanism for multicast and broadcast services in IEEE 802.16E systems;supporting multimedia applications in home networks using Sip and SLP;a novel secure and multipath routing algorithm in wireless sensor networks;performance evaluation of the TLS handshake in the context of embedded devices;adaptive file transfer middleware for mobile applications;NEMO - a network monitoring framework for high-performance computing;denoising network tomography estimations;performance evaluation of TCP algorithms on hybrid wired/wireless LAN test-bed;multimetric network tomography;secure wearable and implantable body sensor networks in hazardous environments;a novel modular black-box architecture for secure vehicular networks;and statistical traffic multiplexing with service guarantees over optical core networks.

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Functional architecture for countering ip multimedia spam

Functional architecture for countering IP multimedia spam

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international conference on Information and Communication Technology Convergence (ICTC)

作者： Soyoung Park Shingak Kang Standard Research Center Electronics and Telecommunications Research Institute Daejeon South Korea

ip multimedia spam poses a threat to the users of various ip applications as well as email spam and SMS spam does. Considering this circumstances, we suggest functional architecture for countering ip multimedia spam. Specifically, we first propose functional architecture for countering ip multimedia spam. We then describe functionalities and interactions between functional components in the architecture. Finally, considerations for adoption of the anti-spam framework on telecommunications networks are provided.

关键词： ip networks multimedia communication Unsolicited electronic mail Protocols Filtering Servers

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Emerging Technologies of the Modern Services Industry

Emerging Technologies of the Modern Services Industry

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international conference on Network applications Protocols and Services (NETAPPS)

作者： Maha Jebalia Asma Ben Letaifa Sami Tabbane Higher School of Communication at Tunis (SUP'COM) Tunisia Higher School of Communication at Tunis (SUP'COM)

As the number of services and users in Internet Protocol multimedia subsystem (IMS) keeps increasing, network virtualization seems to be a good alternative for Mobile Virtual Network Operators (MVNOs) in order to provide better services to customers and save cost and time. As a matter of fact, it offers better performances in terms of resource management and automatic allocation. Furthermore, when an overload occurs in one of the Virtual Machine (VM), live migration is needed. This latter has to take into account the resource availability in the host VM and tend to load balance the nodes and connections. In this paper, we will present the challenges and issues of these emerging technologies.

关键词： Clouds Virtual machining Computer architecture Cloud computing multimedia communication ip networks Hardware

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Registration performance comparison between ip multimedia subsystem and Session Initiation Protocol networks

Registration performance comparison between IP Multimedia Su...

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international conference on Ultra Modern Telecommunications and Workshops (ICUMT)

作者： Jari Kellokoski Erno Tukia Eero Wallenius Timo Hämäläinen Jyri Naarmala Department of Mathematical Information Technology University of Jyväskylä Jyvaskyla Finland Anvia Public Limited Company Vaasa Finland

The ip multimedia subsystem (IMS) is an ip based service control framework architecture. It uses Session Initiation Protocol (Sip) to control its multimedia sessions. The IMS core can be considered as a collection of different functions that are linked with standard interfaces, forming an IMS core network. The IMS has layers for transport, the core itself, and for services and applications. The complexity of the IMS core is greater than within pure Sip based networks. To help to make comparisons between different IMS networks, the ETSI-TISPAN has unified the IMS performance measurements by defining a common framework which to follow. In this paper, the Open IMS solution by the Fraunhover Focus Institute is compared with the OpenSipS, an open source Sip server used for user's registrations to network. The number of users was chosen to be 100 000, a large enough number to be considered as a suitable number of users for small or moderate business usage needs. Our study shows that both of the systems are able to handle this many users and, in the case of OpenSipS, with a clear margin. It was also discovered that both systems are reliable and are suitable for small and moderate business usage and further performance study trials.

关键词： Protocols ip networks Servers multimedia communication Telecommunication standards Current measurement

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An IMS-Based Testbed for Fleet Management Services

An IMS-Based Testbed for Fleet Management Services

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international conference on Next Generation Mobile applications, Services and Technologies (NGMAST)

作者： Mario Cao Manuel Alvarez-Campana Raquel Perez Leal Joaquín Navarro Eduardo Polo ETS Ing. Telecomunicación Universidad Politécnica de Madrid Spain INDRA Spain

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 professional services in the aforementioned scenario. After a detailed analysis of the fleet communication requirements, the IMS-based architecture of the platform is presented. Then, the deployed services are described, from the basic ones to those more advanced, e.g. Push-To-Talk (PTT) and videoconferencing. It stands out the feature of the platform, which provides an environment that facilitates the development, deployment and integration of new services. We finally discuss the importance of the contributions made by the platform for the fleet management scenarios.

关键词： Servers Streaming media multimedia communication Protocols Mixers Media Teleconferencing

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End to end ipSec support across ipv4/ipv6 translation gateway

End to end IPSec support across IPv4/IPv6 translation gatewa...

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2nd international conference on Network applications, Protocols and Services, NETAPPS 2010

作者： Ahmad, Nazrul M. Yaacob, Asrul H. Faculty of Information Science and Technology Multimedia University Jalan Ayer Keroh Lama 75450 Melaka Malaysia

ISBN: (纸本)9780769541778

The presence of ipv4/ipv6 translation gateway provides transparent routing mechanism to ipv4-only nodes and ipv6-only nodes which trying to establish communication from disparate address realms. However, the mechanism breaks TCP/ip intrinsic functionalities that results in ipSec cannot be applied in this environment. The existing solutions to address the compatibility issues between translation gateway and ipSec are either to enhance the translation gateway operation or to modify ipSec architecture especially on IKE negotiation process. By realizing the fact that most of the intermediate networking devices such as translation gateway are beyond the end nodes administration, this paper discusses the existing solutions to improve IKE negotiation in order to ensure end to end ipSec interoperability across translation gateway. Inspired by this solution, this paper proposes new IKE authentication by using Address Based Keys with certificateless signature to alleviate the limitation of traditional pre-shared keys and Public Key Infrastructure (PKI). © 2010 IEEE.

关键词： Authentication

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Enhanced multimedia Services Based on Integrated IMS-MBMS architecture in LTE Networks

Enhanced Multimedia Services Based on Integrated IMS-MBMS Ar...

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international conference on Wireless Communications, Networking and Mobile Computing (WiCom)

作者： Yong Sun Yu Dong Zhenmin Zhao Xiangming Wen Wei Zheng School of Information and Communication Engineering Beijing University of Posts and Telecommunications Beijing China

3GPP Long Term Evolution (LTE) network system provides higher data rate and lower delay with improved coverage and spectrum efficiency for the wireless communications which leads to more creative services emerging, especially the multimedia services. 3GPP introduced the specification of IMS (ip multimedia subsystem) which allows for cost efficient and flexible provision of enriched multimedia services over ip networks. In addition to building network environment for the multimedia service deployment, MBMS is proposed as the broadcast/multicast delivery technology. Up to now the controlling IMS and MBMS are separated subsystems. In this paper, we combine these two systems into an integrated network architecture which enables multimedia services to be deployed using MBMS specifications over IMS core network regarding the long-term vision of the 3GPP SAE/LTE architecture. Finally, the required signaling flow of some typical video services is depicted.

关键词： multimedia communication Streaming media Digital multimedia broadcasting Subscriptions ip networks IEEE news Media

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SCOPE: A prototype for spontaneous P2P social networking

SCOPE: A prototype for spontaneous P2P social networking

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2010 8th IEEE international conference on Pervasive Computing and Communications Workshops, PERCOM Workshops 2010

作者： Mani, Mehdi Nguyen, Anh-Minh Crespi, Noel Wireless Networks and Multimedia Services Department Institut TELECOM Telecom SudParis Evry France

ISBN: (纸本)9781424466054

This paper explores the architecture and implementation details of SCOPE platform. SCOPE is our prototype for spontaneous P2P social networking. It provides customized social networking application for local use cases. Below the network level, SCOPE relies on 802.11 ad-hoc mode and needs no infrastructure. SCOPE follows the hierarchical P2P model. Some nodes with higher computing capability become supernodes. super-nodes form an overlay and provide the distributed data management system for the P2P social network. Client nodes (CNs) connect to super-nodes and rely on them for sharing their contents or accessing to the shared information. We have developed What's UP as our client agent tool which provide a vast range of applications from simple textJlink sharing to P2P ip Telephony. © 2010 IEEE.

关键词： IEEE Standards

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