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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.


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Patent
Jr. Robert C. Lovell1
21 Jan 2008
TL;DR: An infrastructure that leverages established wireless messaging paradigms such as Short Message Service (SMS), Multimedia Message Service, Wireless Application Protocol (WAP), IP Multimedia Subsystem (IMS), etc. as discussed by the authors can provide, in new and creative ways, an enhanced level of security for the payment element of a transaction.
Abstract: An infrastructure that leverages established wireless messaging paradigms (such as, possibly inter alia, Short Message Service, Multimedia Message Service, Wireless Application Protocol, IP Multimedia Subsystem, etc.) to provide, in new and creative ways, an enhanced level of security for the payment element or portion of a transaction—for example, a transaction within Mobile Commerce (M-Commerce, which, broadly speaking, encompasses the buying and selling of merchant-supplied products, goods, and services through wireless devices), a purchase in the checkout lane of a brick-and-mortar store, a purchase at a (fast-food or other) restaurant, etc. The infrastructure may optionally leverage the capabilities of a centrally-located Messaging Inter-Carrier Vendor.

11 citations

Patent
Frank Hägebarth1
02 Oct 2000
TL;DR: In this paper, the authors proposed a method of establishing a voice call between a calling party's terminal (5), which is connected to a telephone network (4), and a called party's terminals (6), which are also connected to the telephone network through an Internet Protocol (IP) network.
Abstract: The invention relates to a method of establishing a voice call between a calling party's terminal ( 5 ), which is connected to a telephone network ( 4 ), and a called party's terminal ( 6 ), which is also connected to the telephone network ( 4 ), through an Internet Protocol (IP) network ( 1 ). To make the method as simple as possible, it is proposed to use conventional IP servers ( 2; 3 ) of IP service providers for providing access to the IP network ( 1 ). The IP network ( 1 ) includes at least one Voice-over-IP (VoIP) server ( 11 ), which controls the functions of telephony over the IP network ( 1 ). The VoIP server ( 11 ) receives the request for an IP call from the calling party, activates the still inactive terminal ( 6 ) of the called party over the telephone network ( 4 ), determines the IP addresses of the terminals ( 5, 6 ), and communicates the IP addresses to the respective other terminal ( 5; 6 ). The terminals ( 5, 6 ) then establish a voice call between them through the IP network ( 1 ).

11 citations

Proceedings ArticleDOI
27 Oct 2008
TL;DR: This paper reviews the function of the IMS, and presents the use of the Service Oriented Architecture (SOA) above IMS to further enable service convergence.
Abstract: Conventional network services operate like silos in that a specific set of services are offered over a specific type of access network. As access networks evolve to provide IP-based packet access, it becomes attractive to break these "service silos" by offering a converged set of IP-based services to users who may access these services using a number of alternative access networks. This trend has started with 3rd generation cellular mobile networks, which have standardized on the use of the IP Multimedia Subsystem (IMS) to manage user access to a wide variety of multimedia services over the mobile Internet, while facilitating interworking of heterogeneous wireless and landline access networks. This paper reviews the function of the IMS, and presents the use of the Service Oriented Architecture (SOA) above IMS to further enable service convergence. Examples of converged services are presented. Technical challenges in network and service convergence are discussed and some recent results are presented.

11 citations

Patent
03 Apr 2015
TL;DR: In this paper, a data communication gateway operating as a home hub includes a processor that executes computer program instructions to provide IMS/Web services interaction to one or more client computing devices.
Abstract: Systems and methods for home hub for IMS/Web services interaction are described. In one aspect, a data communication gateway operating as a home hub includes a processor that executes computer program instructions to provide IMS/Web services interaction to one or more client computing devices. The client computing device(s) are operatively coupled to the home hub. The client computing device(s) are not Session Initiation Protocol (SIP)-enabled devices. To provide SIP- or IMS-based services to such client computing devices, the home hub registers on behalf of the client computing device(s) to a SIP network. The home hub replies to SIP messages on behalf of the SIP network registered device(s) to process all SIP request(s) and provide the registered device(s) with corresponding SIP-based service(s).

11 citations

Proceedings Article
03 Mar 2008
TL;DR: An implementation of a BT simulator is presented intended for future use in investigating modifications to the BT system to provide streaming media capabilities, validated against real-world measurements and a brief performance analysis is provided.
Abstract: IP Television (IPTV) and other media distribution applications are expected to be one of the next Internet killer applications. One indication of this is the corporate backing that the IP Multimedia Subsystem (IMS) is getting. However, the bandwidth utilization of these applications is still an issue, as the volume of multimedia grows due to larger image resolution and higher bitrate audio. One way of managing this increase in bandwidth requirements is to use existing end-host bandwidth to decrease the load on the content server in a Peer-to-Peer (P2P) fashion. One of the most successful P2P applications is BitTorrent (BT), a swarming file transfer system. This paper presents an implementation of a BT simulator intended for future use in investigating modifications to the BT system to provide streaming media capabilities. The simulator is validated against real-world measurements and a brief performance analysis is provided.

11 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20235
202219
202124
202050
201971
201881