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A new UPnP architecture for distributed video voice over ip 06

A new UPnP architecture for distributed video voice over IP

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Proceedings of the 5th international conference on Mobile and ubiquitous multimedia

作者： Antonio Vilei Gabriella Convertino Fabrizio Crudo STMicroelectronics

ISBN: (纸本)9781595936073

In this paper we present a novel approach to video telephony where we are able to exploit the benefits of the Universal Plug and Play (UPnP) protocol: self-configuration, discovery and control of available devices connected to the network. At the time being, UPnP does not deal with Video Voice over ip (VVoip) applications. Integrating a signaling protocol like the Session Initiation Protocol (Sip) with UPnP allows interaction between the videophone and other UPnP compliant devices, like a TV set or a media server. This interaction, for example, makes it feasible to display the caller's image on the television screen, thus allowing the user to relax on the sofa and naturally converse. Another interesting scenario is the one where the user sends to the conversation partner a set of still pictures or short video clips acquired from a UPnP media server already available in the home premises. An advantage of this distributed approach is its cost effectiveness, since it allows to reuse existing UPnP devices also in the context of video telephony. The integration between Sip and UPnP has been achieved introducing a new UPnP device, the VVoip device, which is a Sip User Agent able to interoperate with standard UPnP MediaServers and Medi-aRenderers.

关键词： Voip middleware Sip UPnP video conference

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A P2P Approach for the Selection of Media Processing Modules for Service Specific Overlay Networks

A P2P Approach for the Selection of Media Processing Modules...

引用

Advanced international conference on Telecommunications (AICT)

作者： B. Mathieu Meng Song M. Kleis France Telecom R&D Beijing France Fraunhofer Institut FOKUS Germany

The increasing heterogeneity of end-user terminals as well as network access technologies leads to a demand to deliver media content adapted for possibly multiple and different end-user devices. Media adaptation performed on the server side has shown its limitations and on demand network side media adaptation, performed transparently for users and content providers emerges as a promising approach. Based on this concept, the proposed Smart multimedia Routing and Transport (SMART) architecture, a novel overlay network solution designed within the Ambient Network project, will enable the transparent integration of advanced media processing modules into end-to-end media delivery paths. The required media processing modules need to be selected based on end-users requirements as well as Quality of Service (QoS) constraints defined by service providers. In this paper we propose a distributed hash table (DHT) based approach to support the selection and instantiation of Media Processing Modules to realise a Service Specific Overlay Network (SSON) for a network side media processing and adaptation.

关键词： Ambient networks Telecommunications Network servers Routing Research and development Quality of service ip networks Transcoding WiMAX Ad hoc networks

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ip Generation Targeting Multiple Bit-Width Standards

IP Generation Targeting Multiple Bit-Width Standards

引用

13th IEEE international conference on Electronics, Circuits and Systems (ICECS'2006), vol.2

作者： Bertrand Le Gal Emmanuel Casseau IXL Laboratory CNRS UMR 5818 ENSEIRB Bordeaux 1 University France R2D2 Laboratory IRISA UMR 6074 ENSSAT University of Rennes I France

multimedia applications such as video and image processing are computation intensive applications. For these applications the bit-width of data and operations is different all over the application. Generating optimized architectures is not an obvious task since it requires a deep bit-width analysis in order to properly size hardware resources. Furthermore implementing several application profiles onto the same chip makes it possible to avoid over-sized architectures or chip reconfiguration. In this paper we propose a design methodology based on high-level synthesis which takes into account multiple bit-width standards in order to generate area and power optimized architectures for embedded devices. First results demonstrate the interest of the approach.

关键词： High level synthesis Hardware Computer architecture Design optimization Design methodology Signal processing algorithms Laboratories Image processing Computer applications Digital signal processing

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Inter-operator cooperation challenges in Sip-based service architecture of ip multimedia subsystem of UMTS

Inter-operator cooperation challenges in SIP-based service a...

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6th IEE international conference on 3G and Beyond, 3G 2005

作者： Gouya, Anahita Crespi, Noël Department of Mobile Netwoks and Multimedia Services 9 Rue Charles Fourier 91011 Evry Cedex France

One of the benefits of the evolution of the third generation mobile systems such as UMTS (Universal Mobile Telecommunications System) toward the all-ip network architecture is to provide functionalities to support real-time multimedia services. Simple and efficient multimedia session handling characteristics of the Session Initiation Protocol (Sip), candidates it by 3GPP (Third Generation Partnership Project) for the signalling protocol of ip multimedia subsystem (IMS) of UMTS. An important issue in IMS is the fact that service control procedures of the subscribers are performed in the home network. In this paper we review the Sip-based service registration and session establishment procedures in IMS and we study the challenges for providing a Sip-based cooperative mechanism between network operators of different subscribers in IMS in order to prevent extending of service control procedures of roamers to home network and to optimize the session establishment procedure by performing service control procedures of roamers in the visited network.

关键词： multimedia systems

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A new architecture for wireline access to the 3G ip multimedia subsystem

A new architecture for wireline access to the 3G IP Multimed...

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2005 Fifth international conference on Information, Communications and Signal Processing

作者： Crespi, Noël Institut National des Télécommunications GET-INT 9 rue Charles Fourier 91011 Evry Cedex France

ISBN: (纸本)0780392833

In this paper we propose a novel architecture for converged multimedia Sip (Session Initiation Protocol) services in wireline and 3G networks. The work on the future evolution of 3G systems is taking momentum with ongoing research on access to the IMS (ip multimedia subsystem) from any broadband access network. In particular WLAN (Wireless Local Area Network) access to the 3G services located in the IMS is being standardised though major points still need to be addressed. Wireline access to 3G services is not yet standardised and no deployable solution exists today. We propose in this paper a new architecture that allows an xDSL (Digital Subscriber Line) access to 3G Sip based services, enabling a new generation of converged fixed/mobile services. This would also allow Network Operators to mutualise equipments and therefore reduce costs. In this paper, we analyse the high level requirements of this architecture, and we propose to introduce two new functional entities in the xDSL network: a Sip Proxy and a Border Gateway. We study the impact of this new architecture with several transversal requirements: connectivity, QoS and security. © 2005 IEEE.

关键词： multimedia services

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Sip-based QoS control over satellite networks

SIP-based QoS control over satellite networks

引用

international conference on Emerging Technologies

作者： Qureshi, RI Alphand, O Sir Syed Univ Engn & Technol Dept Comp Engn Karachi Pakistan

ISBN: (纸本)0780392477

Satellite access networks (SAN) are expected to play a decisive role in bridging the digital divide through providing broadband access to multimedia services in geographical area where terrestrial access networks like cable or ADSL cannot be deployed. SANs currently lack a clear QoS architecture in order to fit seamlessly into the end-to-end NGN framework. Several architectures mixing ip QoS layer mechanisms with specific satellite MAC dynamic allocation schemes are already designed. However, very few multimedia applications can actually benefit from these architectures since most of them are not QoS aware. This work presents a Sip based multimedia signaling architecture where existing Sip applications can beneficiate from a QoS enabled ip network without undergoing any adjustments or modifications. In addition to that, the realization of the proposed solution is also described along with its performance evaluation tests and their results on an emulated satellite platform, providing DiffServ services, which was implemented during the European IST SATip6 project.

关键词： multimedia communication Sip quality of service satellite

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A framework to improve QoS and mobility management for multimedia applications in the IMS

A framework to improve QoS and mobility management for multi...

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Seventh IEEE international Symposium on multimedia, ISM 2005

作者： De Gouveia, Fabricio Carvalho Magedanz, Thomas Technical University of Berlin Faculty IV / Next Generation Networks Franklinstr. 28-29 D-10587 Berlin Germany

ISBN: (纸本)0769524893

The new ip multimedia subsystem (IMS) provides an overlay architecture for ip based core networks and enables the efficient provision of an open set of potentially highly integrated multimedia services (I.e. instant messaging, video conferencing, Voip, application sharing, etc) on top of possibly different access technologies. However, there will be different domains and IMSs managed by different ISPs (Internet Service Providers) in the Internet. Each ISP has an SLA (Service Level Agreement) established between its users, which defines what kind of resources and prices was agreed to be offered to each user. However there is no SLA between a visited domain and a mobile user. This paper analyses how to extend the QoS capabilities of the IMS offered to a mobile terminal when it roams among different domains. We propose a framework that integrates QoS and Mobility management. This integration envisages the improvement of the overall end-to-end performance and the reduction of management entities in the network. The architecture presents the Domain Policy Manager (DPM) as the Decision-making and controller of a domain. The proposed architecture uses policies with inter-domain negotiation. An application scenario to show the framework functionality is described as well as the current Status of the implementation. © 2005 IEEE.

关键词： multimedia systems

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PTT + IMS = PTM - towards community/presence-based IMS multimedia Services

PTT + IMS = PTM - towards community/presence-based IMS Multi...

引用

Seventh IEEE international Symposium on multimedia, ISM 2005

作者： Blum, Niklas Magedanz, Thomas Fraunhofer Institute FOKUS Next Generation Network Integration Kaiserin-Augusta-Allee 31 10589 Berlin Germany Technical University Berlin Fraunhofer FOKUS Germany

ISBN: (纸本)0769524893

The specification of the ip multimedia subsystem as a service delivery architecture for Next Generation Networks and the introduction of Push-To-Talk (PTT) as an IMS-based service moves Voip applications for mobile devices already to the market. PTT has gained a strong following in the US market and is on the verge of spreading globally. The Open Mobile Alliance (OMA) currently specifies PTT as an IMS-based service to assure interoperability between different operator domains. Most PTT solution vendors think already about extending PTT with other media types then voice, like video communication, file transfer or service subscription for content push services. Thus, Push-To-multimedia (PTM) does not seem to be that far away from market and is well suited as an enabler to provide IMS applications with advanced multimedia communication functionalities. The department for Next Generation Network Integration (NGNI) at Fraunhofer Institute FOKUS has created a PTM application that utilises the IMS architecture. This paper reports about a concept of integrating this PTT/PTM functionality in community-based applications to enable already existing groups and communities with new communication features. © 2005 IEEE.

关键词： multimedia systems

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The security deployment of early IMS

The security deployment of early IMS

引用

IEE Mobility conference 2005 - The Second international conference on Mobile Technology, applications and Systems

作者： Yang, M.Z. Sui, A.F. Li, M.Z. Corporate Technology Siemens Ltd. China

ISBN: (纸本)9810545711

3GPP ip multimedia subsystem (IMS) provides ip-based session control capabilities based on the Sip protocol. Although full support to 3GPP TS 33.203 security features is preferred from a security perspective, it is acknowledged that early IMS implementations exists which do not support these features. 3GPP TR 33.978 define some security mechanisms to protect early IMS, but there are still some security issues, e.g. the signaling security, roaming security, NAT and interworking, which need to be resolved in the deployment of early IMS. This paper presents a new deployment of early IMS which focus on the security from the access network to the core network.

关键词： multimedia systems

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Towards adaptive distribution of multimedia content within collaborative conferencing sessions

Towards adaptive distribution of multimedia content within c...

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9th IASTED international conference on Internet and multimedia Systems and applications, IMSA 2005

作者： Schuster, Daniel Kümmel, Sascha Technische Universität Dresden Department of Computer Networks 01062 Dresden Germany VidSoft GmbH Lortzingstr. 35 01307 Dresden Germany

ISBN: (纸本)0889865108

This paper proposes a generic architecture and protocol for adaptive distribution of multimedia content within collaborative conferencing sessions, supplying applications like presentation sharing, co-browsing, or application sharing with extensive content. applications building upon it are able to use efficient decoupled content delivery with adaptation in a tightly-coupled environment while integrated interaction features like annotations, telepointer, and chat are still available. Building blocks from content networking research are combined with concepts of ip conferencing. A system for presentation sharing and photo sharing was implemented as a proof of concept.

关键词： multimedia systems

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