IP Multimedia Subsystem

About: IP Multimedia Subsystem is a research topic. Over the lifetime, 4398 publications have been published within this topic receiving 43698 citations.

An Integrated Telecom and IT Service Delivery Platform

Abstract: IP Multimedia Subsystem (IMS) and Web services (WS) are service-oriented architectures developed separately for service delivery in the next generation telecommunications, and IT-centric computing environment, respectively. In order to harness services in both of these platforms and to facilitate combining and blending of services, we propose an integrated telecom and IT Service Delivery Platform for interworking between IMS and WS. We propose to use SIP-based Micro Service Orchestration and Web service bus to seamlessly integrate IMS, WS and the underlying services. We further present an example of managing multimedia services over an Ethernet Passive Optical Networks (EPON) infrastructure to illustrate that the proposed Service Delivery Platform has the benefits of supporting rapid development and deployment of new converged multimedia services.

System and method of device discovery and control in ip multimedia subsystem networks

Abstract: A method of controlling and delivering media content from a media server (MS) to a media renderer (MR) utilizing a wide area IMS network for control. The method involves: provisioning a serving node in the IMS network with control point (CP) logic that includes logic to negotiate media content delivery with a least one of an MS and an MR; provisioning a user endpoint (UE) device of the IMS network with control point proxy (CPP) logic that includes logic to negotiate media content delivery and VCR controls to control media presentation; in response to a media content delivery request, invoking the CPP logic and the CP logic to cooperatively negotiate media content delivery between an MS and an MR that uses local wireless or land line connections when possible in order to minimize wide area bandwidth usage.

Methods, systems, and computer program products for providing geographically diverse ip multimedia subsystem (ims) instances

Abstract: Systems, methods and computer program products for providing geographically diverse Internet protocol multimedia subsystem (IMS) instances. A geographically diverse IMS network element is disclosed herein including an active instance of a first IMS function, being located in a first geographic location, and a standby instance of the first IMS function, being located in a second geographic location different from the first geographic location.

Interconnecting P2PSIP and IMS

Abstract: Interpersonal communication using the information networks can be accomplished in many different ways. Users may communicate, for example, by using a specific communication application on an end-user terminal, typical mobile phone, or IP Multimedia Subsystem (IMS) client. Quite often there is no interconnection mechanisms between these different communication methods, and this is emphasized with regards to various communication applications. We propose an architecture for interconnecting Peer-to-peer Session Initiation Protocol (P2PSIP) and IMS networks. The actual gateway, that enables the interconnection, is seen as a peer in the P2PSIP side and as an application server (AS) in the IMS side. Furthermore, we present a prototype from the proposed interconnection architecture.

Voice over IP - considerations for a next generation architecture

Abstract: Voice over IP is on its way to becoming an alternative to the classical telephony system because more and more Voice over IP providers offer their solutions on the Internet and try to increase their clientele. But current voice over IP technology is still in its commercial and technological infancy and has not yet proven to be worldwide accessible, usable and scalable as the classical telephony system has proven in the past 100 years. In this paper, architecture for a next generation Voice over IP model will be outlined and discussed. The main focus lies on interoperability between different Voice over IP providers as well as dependability and robustness.