Topic
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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TL;DR: The design of this service has proved useful in gaining insight into the way novel intelligent multimedia services across network platforms will benefit from the use of IN technology, and a performance evaluation of the service has also proved valuable to identify the major system and traffic parameters to consider when designing and deploying IN multimedia Services across multiple networks.
17 citations
TL;DR: A vertical hand over VHO scheme is presented based on cross-layer approach that enables vertical handover with less handover latency and signaling cost and an integration architecture for WiMax and LTE access technologies with EPC as core network and IMS for service provisioning is proposed.
17 citations
Patent•
01 Oct 2002
TL;DR: In this article, the capacity of a data network to have voice over IP communications implemented thereon is predicted. But this is compared to the network capacity, and it is determined from this comparison whether the network is capable of having conventional legacy telephone traffic implemented there on the PSTN for an organization.
Abstract: The method and system allows for predicting the capacity of a data network to have voice over IP communications implemented thereon. Information corresponding to network data transmission traffic is collected. Information corresponding to telephone call traffic on the PSTN for an organization is also collected. A determination is made about what load the telephone call traffic would impose on the network if implemented as voice over IP traffic. This is compared to the network capacity and it is determined from this comparison whether the network is capable of having conventional legacy telephone traffic implemented thereon as voice over IP.
17 citations
01 Jan 1995
TL;DR: A new geometrical view of the concept of Quality of Service (QoS) is presented, considered as a first step towards a well defined approach to access the QoS to guarantee the quality of high performance multimedia data transfers.
Abstract: This paper presents a new geometrical view of the concept of Quality of Service (QoS). QoS is of utmost importance and quite often referred to when handling information in distributed communications systems. Nevertheless, no formal definition exists and consequently no evaluation and no comparative analysis of QoS can be done. This paper is considered as a first step towards a well defined approach to access the QoS; such approaches have to be developed to guarantee the quality of high performance multimedia data transfers.
17 citations
TL;DR: This work focused on DDoS attacks on IMS server using SIP particularly with REGISTER message and proposed a scheme based on multi agent systems for intrusion detection which takes the advantage of the distributed paradigm to implement an efficient distributed system.
17 citations