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In the past, network operators were content with offering simple services such as voice and text messaging. However, they began to notice that these services were generating lower revenues even while the number of subscribers increased. Network operators are now forced to rapidly deploy value added services with minimum capital investment while maximising revenue from service usage by end users. Network...
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...
With the advancement of Internet technologies and the widespread use of mobile devices, the number of users in conferencing services is increasing quickly. A P2PSIP conferencing system and an IP Multimedia Subsystem (IMS) conferencing system have been designed to provide conferencing services. The IMS conferencing system was developed to adapt to a server-based centralized system, while the P2P network,...
Emergency call and walkie-talkie are two services utilized in emergency situations. During Typhoon Morakot in 2009, we experienced the deficiency of emergency call service that cannot continuously track callers in real time and walkie-talkie communications where a speaker may not be granted the permission to talk. These issues can be resolved by the emergency call and push-to-talk over cellular services...
This paper analyzes signaling traffic generated by IP Multimedia Subsystem (IMS) when deployed within a hybrid WLAN IEEE 802.11 and CDMA2000 networks to provide wireless and broadband services to users. IMS provides a services infrastructure to 3G networks and beyond and delivers the capability to maintain sessions among calling parties. IMS is under varying degrees of trials and deployment. Service...
Telecom based service providers are relentlessly trying to accelerate their service offerings to match the pace at which the users are embracing the Web. In reality IMS based Telecom and Internet based Web 2.0 networks have their own advantages and need to co-exist to create an enriched user experience. The convergence of IP Multimedia subsystem (IMS) based Telecom and Web 2.0 based networks is slowly...
We discuss the creation and evaluation of an IP Multimedia Subsystem (IMS) based smartphone service that originally started as a web-only application. By using a simple policy framework, additional IMS-based services such as user registration, subscription, authentication and authorization are orchestrated with the web-based application via a general OMA-based service framework. This service plane...
Mobile users' demand for using the best available network connection encourages mobile network operators (MNOs) to construct multi-access networks managed by all-IP based mobile networks. For such an MNO, the IP Multimedia Subsystem (IMS) is a promising service control infrastructure to provide IP-based multimedia services with QoS guarantee in the multi-access network. The service centralization...
In a saturating telecommunications marketplace network operators want to rapidly deploy services with minimum capital investment, while maximizing on revenue from service usage by customers. One way to achieve this is to create interfaces for 3rd party service and content providers to offer their applications and services to users. Composing and bundling of these services will essentially create new...
IP Multimedia Subsystem is deemed to be the core of NGN (Next Generation Network) technology. IMS is considered as the important way to solve the fixed-mobile convergence and the combination of multimedia services. P2P technology is introduced to solve the complicated structure and high OPEX of IMS, so as to promote the reliability and extensibility. However the introduction of P2P technology brings...
IP Multimedia Subsystem (IMS) is considered as the core technology of Next Generation Network, the wide use of Peer-to-peer (P2P) technology in Internet promoted the research of combination of IMS and P2P, this paper proposes a P2P file-sharing system based on IMS. The issues to be considered include the combination of P2P and SIP (Session Initiation Protocol), NAT (Network Address Translators) and...
The Application continuity in IMS requires Mobility Management to ensure Session having Seamless handover and small delay. As a Session Control Protocol of IMS, SIP introduces big delay and real-time handover problems. In this letter, we proposed a combination scheme of SIP and mSCTP to solve the problem of Application continuity in IMS. We presented a novel approach for the problem of Compatibility...
In this paper we apply classification to learn geographic regions using Location Based Services (LBS) in Next Generation Networks (NGN). We assume that the information in Local Network (cellular network) can be freely exchanged with Global IP Network (NGN) and the information can be gathered in a database. Location Based Services (LBS) in the IP Multimedia Subsystem (IMS) also provide location information...
The present paper describes practical experience gained with IMS based fixed mobile convergence (FMC) network deployment at TDC Denmark. The paper also takes a look into the near future, showing trend in technology. This network deployment, including the FMC component, is a joint project between TDC Denmark and Ericsson. The FMC implementation offers advanced services to enterprise users. Enterprise...
Mobility has become a keyword nowadays with the evolution of mobile devices market and proliferation of real-time services. IP Multimedia Subsystem (IMS) is a single, standardized service framework that supports voice, video, data and messaging services, but does not provide seamless mobility for packet based sessions. This paper purposes an IMS architecture with IEEE 802.21 and media-independent...
Because of recent advances in both client devices and wireless communications, industry has started to look at the potentially relevant market of Location Based Services (LBSs). IP Multimedia Subsystem (IMS) and IMS-based presence service are putting together and standardizing the needed support for location data dissemination in industry-level LBS applications. However, the deployment of presence-based...
Fixed-mobile convergence (FMC) is the term used to describe a wide range of mobile services that converge elements of fixed communications infrastructure to complement the core mobile service. IP multimedia subsystem (IMS) is the approach towards merging the fixed and mobile worlds together with the Internet. It enables the efficient provision of an open set of highly integrated multimedia services,...
The third generation network which is vigorous nowadays will be followed by an all-IP infrastructure referred to as Next Generation Networks (NGN) in the near future. More specifically, the IP Multimedia Subsystem (IMS) is the only standardized way to offer IP based services that are enabled by one common core and all types of access networks and devices. The heterogeneity and mobility of the IMS...
This paper aims to describe the general concept and design on a solution being developed in TM Research and Development to enable end users to obtain on demand information on location specific data based on Global Positioning System (GPS) or mobile triangulation information directly from mobile devices or fixed terminals. In order to illustrate our approach, a proof-of-concept was implemented.The...
The combination of SIP-NEMO and IMS brings benefits of power saving, low complexity and few handoff to both end users and service providers. In this article we investigate the integration of SIP-NEMO in the IMS, and propose two interworking architectures: loosely coupled and tightly coupled. We also present three basic scenarios: registration, session establishment and optimized handoff with context...
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