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This contribution discusses algorithms for strong authentication of applications in mobile devices. The current LTE and IMS networks provide strong authentication using USIM smart cards based on AKA algorithm. The problem of this authentication is that this authentication is under the sole control of Telco operators. We can expect that more applications will be placed into the IMS environment in the...
The main goal of many researches focuses on improving subscriber experience by proposing a variety of services and features to better fit his needs and expectations. In order to improve the response to this subscriber expectation and considering the huge amount of information available in the network combined with performance expectation, we combine services' descriptions with subscriber requests...
Push To Talk (PTT) is a half duplex communication system which can be used to perform either one to many group calls. Since 1997, PTT has been deployed over Terrestrial Trunked Radio (TETRA) network for mission critical military and civilian use. The cost of operation and maintaining a Tetra network runs into billions of pounds. Hence governments around the world are looking to share the existing...
Nowadays there is a growing uncertainty about the near future evolution of classical PMR solutions due to spectrum scarcity, digital dividend issues and economic crisis. This paper aims at facing this situation by seizing the existing window of opportunity due to the convergence of the IMS as a predominant enabler for future multimedia networks and the deployment of commercial LTE networks. The paper...
This paper presents a novel open-source implementation of a call center, which is compatible with the IP Multimedia Subsystem (IMS) platform, supporting call forwarding and dispatching services, along with video call and chat with file transfer. The proposed solution is called Call Center for IMS (CC4IMS) and following a requirement analysis, the paper discusses the overall architecture and design...
Gaming market is gaining rapid significance and recognized as one of the most revenue generating futuristic services. With IMS(IP Multimedia Subsystem) networks coming in to reality a new gaming experience can be provided to the subscribers by blending the gaming service with IMS service enablers such as presence, location etc. An intelligent service broker element like Service Capability Interaction...
The numbers of MVNOs (Mobile Virtual Network Operator) are growing globally, but so do their operational and business issues. This paper identifies these issues and looks for remedies via the new 4G architecture and interfaces. The paper examines the ‘Full’ MVNO model as a ‘Home’ network in a pseudo roaming scenario (National Roaming), allowing MVNO to connect to multiple MNOs through the discovery...
The CSNA [Community and Social Network Aggregator] solution allows aggregating rich communication into one single point of entry for the end user (the RCS client, the Mobile Phone Users) and allowing operators to anchor the communication/messaging initiation. The integration for CSNA solution will involve integration of IMS with Facebook, Gtalk and other social networks, synchronizing all contacts...
This paper proposes a new service architecture based on the interconnectivity between Subscriber Units (SUs) running on WiMAX network participating in an Application Layer Multicasting-based distributed multimedia conference. The novelty of the proposal is that it replaces the standard centralized architecture of IMS-based conference in order to utilize the intelligence and computational capacity...
The MVNO (Mobile Virtual Network Operator) business in Europe is maturing, with growing pressure on margins. To cope, MVNOs seek independence and flexibility which they can gain by advanced 4G access agnostic technology. This evolution is supported by three overlapping MVNO models: 4G “Full MVNO”, Multi-MNO and “Always Best Connected”, which are all enhanced by advanced Policy functions. The paper...
The packet-switched NGN (Next Generation Network) architecture allows users to access multimedia services via the Internet anytime and anywhere. Through the core IP Multimedia Subsystem (IMS), NGN can provide multimedia services, such as voice, video, data and messages over heterogeneous networks. However, for high-quality services in practical environment, the performance and QoS (Quality of Service)...
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...
With the acceleration of network evolution to the packet-based all-IP network, a demand for the IMS which is defacto standard framework to provide IP services in the packet-based network, is increasing rapidly. Number Portability(NP) which has been contributing to facilitating of telephony company competition and increasing of user convenience in legacy circuit-based networks, is also becoming more...
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 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...
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.
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...
Parlay is an efficient and flexible approach that enables telecom operators to efficiently wrap up their network services and capabilities and allows third parties to flexibly access those services for deployment of new applications that drive consumption of network services. This paper describes an Internet-mobile platform for telecom applications based on Parlay X. Our solution aggregates resources...
With deploying heterogeneous communication devices with different kinds of access networks, it is one of the promising services to transfer an active session from one device to another. IETF SIP can provide the ubiquitous service regardless of underlying networks and device types. In this paper, we investigate two mainstream using SIP, IMS and P2PSIP, and propose interworking architecture to provide...
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