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Due to significant popularity of Location-based Services and Multimedia communication over mobile devices, there are many researches has been conducted to extend the features of location tracking and make it cost-effective to users. It becomes necessary for the users to have seamless communication with automated switching of software applications. This paper focuses on the performance of indoor location...
The development of mobile computing and Wireless Local Area Networks (WLANs) has grown rapidly, nowadays. There are several approaches and practically work has been done on tracking mobile nodes and transmitting multimedia data among the network using wireless technology. Several applications and methods are being used to maintain the accuracy of tracking distance for the mobile nodes and broadcasting...
There is an increasing trend of accessing multimedia and web services embedded with Presence service over the mobile, which have driven the telecom operators to look for the new and better ways to provide such services. Presence service puts a lot of load on the IMS network and it can contribute 50% or more to the total signaling load which can increase end-to-end delay. In this paper we have analyzed...
Mobile sensors networks are used in several domains to perform various tasks related to monitoring, recording, and affecting the conditions of an environment. Interacting with mobile sensor networks deployed in public networks requires an application capable of securely exchanging data in the network, generating mobile sensor network requests and processing mobile sensor network responses. Embedded...
Session Initiation Protocol (SIP) has been widely applied to multimedia telephony service in Broadband Converged Network (BCN). SIP is also adopted as the basic signalling protocol of VoIP and 3GPP. IP multimedia subsystem (IMS) is a SIP based multimedia telecommunication infrastructure in 3GPP. Recently, many mobile operators have selected IMS as a core infrastructure because IMS has a flexible architecture...
This paper describes a location-based services prototype that has been developed based on IMS and LOCSIP. The paper provides a brief overview of the prototype's capabilities, and illustrates how it has been used for rapid development of extended network services supporting first-responders in an emergency. Interoperability testing is discussed, and a set of lessons learned are presented.
The IP Multimedia Subsystem (IMS) delivers multimedia services using IP integrated voice and packet services. IMS also provide users seamless connectivity. In this paper a location tracking system for IMS is developed track the location of a device. The existing testbed that supports Session Initiated Protocol (SIP) had been developed in the UTM MIMOS Coe, Universiti Teknologi Malaysia. However it...
The development of economics and the globalization of trade make cross-region communication increasingly frequent. Traditional communication methods, such as telephone, fax and Email can not satisfy people's daily demands. Multimedia conference system supports people in different places share audio, video and documents to achieve real-time communication. Nowadays, multimedia conference system is mostly...
With the rapid development of mobile communication and packet-switched technologies, it is inevitable to discover the suitable solutions to integrate these networks and to provide users the consistency and continuity of services through diverse access networks. In this paper, we analyse the fundamental criteria for the suitable solutions based on 3GPP TR22.937 and WiMAX Forum requirements; the requirements...
The IP Multimedia Subsystem (IMS) defined by the 3rd Generation Partnership Project (3GPP) and 3GPP2 provides a platform for the provision of multimedia services with quality of service (QoS). In addition, this service architecture allows third-party vendors to create advanced multimedia and multisession services across wireless and wireline network access. The Session Initiation Protocol (SIP) supports...
The IMS (IP multimedia subsystem) control infrastructure aims at integrating QoS management functionality into IP services networks. The present contribution explores the approach enforced by 3GPP standards in this respect and describes implementation results in realistic scenarios based on the DiffServ model.
Factors such as the growing number of multimedia terminals, the constant increase of bandwidth available per user, and the large number of existing data sharing applications, are compelling users to generate and distribute their own content to restricted groups of other users. In order to support such scenario, we present an IMS-based solution that enables content distribution, in multicast, to groups...
Session initiation protocol (SIP) has already been accepted as the multimedia control signaling standard in ubiquitous wireless network by IETF and 3GPP etc. However, the handover procedure with SIP suffers from undesirable delay for real-time multimedia applications in WLAN. Moreover, the existing handover management protocols are not sufficient to guarantee handover of VoIP session in WLAN. In this...
Providing seamless handoff in session mobility is a challenging, and vital, issue relating to the heterogeneous next generation all-IP networks. The research work outlined by this paper describes a solution to support seamless video handoff in session mobility over IP multimedia subsystem (IMS) networks. Our system is built on top of an IMS network, which we believe to be the best platform for session...
The IP Multimedia Subsystem (IMS) defined by the 3rd Generation Partnership Project (3GPP) is the architecture merging the Internet and mobile worlds. The IMS enables new business models and allows third-party developers to make their applications available to all IMS users. This paper introduces an IMS testbed called ImsInnovation, which was launched in Summer 2008. The objective of the testbed project...
The IP multimedia subsystem (IMS), originally designed by 3GPP and later updated by 3GPP, 3GPP2 and TISPAN, presents itself as an architectural framework that allows the convergence of the Internet, wireless and wireline networks and a global platform for the delivery of IP multimedia applications in next generation networks (NGN). One of the most used services to test IMS capabilities is push-to-talk...
In this paper we address the handover scheme based on the Session Initiation Protocol (SIP) for IMS applications and services. The existing SIP handover tends to suffer from the poor handover performance due to larger handover latency. To solve this problem, we propose a fast handover scheme based on network agent. In the proposed scheme, the SIP handover latency could be more reduced by using a new...
The IP multimedia subsystem has provided major advances for IP-based telecom infrastructures and services. The IMS core network enables a variety of IMS-compliant communications services to interoperate while being accessed through different kinds of access networks, preferably broadband. As both consumer and corporate users are by now used to access services, even communications services through...
The emergence of IMS (IP multimedia subsystem) and DLNA (digital living network alliance) using SIP (session initiation protocol) has major ramifications for the whole of mobile industry including network providers, end users and application developers. This paper focuses on the evolution of mobile applications to provide new services with respect to DLNA connecting IMS platform on the operator end...
The session initiation protocol (SIP) is an IETF standardised protocol for multimedia signalling and communication over the internet. SIP has been used in many deployments in client-server architecture. However, this configuration potentially possesses various scalability and redundancy limitations because its architecture relies on various centralised components. To overcome some of these limitations,...
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