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Migration to next generation networks (NGN) is becoming a necessity for Telco companies to follow the telecommunications industry evolution. However, NGN as proposed by the 3GPP implies significant challenges for the deployment. Indeed IMS architecture, which is considered as one of NGN network, includes significant security weaknesses for users and service providers. In order to increase the degree...
IP Multimedia Subsystem (IMS) has been standardized by 3GPP/3GPP2 to provide essential services to users of the 4G and beyond. Its capabilities to scale and integrate with Next Generation Network (NGN) has given IMS widespread applicability in the Next Generation Networks (NGN). IMS relies heavily on SIP (Session Initiation Protocol) to insure initialization, negotiation and termination of services...
Legacy applications are the huge existing IPv4-based network applications. It is a critical subject to maintain them availability during IPv6 transition period. However they could run properly neither in IPv6-only networks nor between IPv6/IPv4 heterogeneous networks. That has resulted in the limitation of the widespread adoption of IPv6. To deal with this problem, we propose a novel framework called...
The Identity-Based Internet Protocol (IBIP) Network project is experimenting with a new enterprise oriented network architecture using standard Internet Protocol to encode identity (ID) information into the IP packet by a new edge security device referred to as the IBIP policy enforcement point (PEP). This is a variant of a network admission control process that establishes user and host identities...
The IP Multimedia Subsystem architecture, proposed by the 3GPP consortium as a basis to support the convergence between mobile networks and the Internet, states that Session Control components are implemented through Session Initiation Protocol. The Session Initiation Protocol is an application layer protocol used to establish, modify and terminate sessions between devices. In the last years, studies...
The NGN (Next Generation Network), which can provide advanced multimedia services over an all-IP based network, has been the subject of considerable attention for several years. While there have been tremendous efforts to develop its architecture and protocols, especially for IMS, a key technology of the NGN, its wide deployment is still a long way off. However, efforts to create an advanced signaling...
Over the past few years, mobile operators are faced with enormous challenges. Of such challenges, evolved user demands on personalized applications. Telecommunications industry as well as research community have paid enormous attention to Next Generation Networks (NGN) to address this challenge. NGN is perceived as a sophisticated platform where both application developers and mobile operators cooperate...
IMS was represented in Release 5 (Immigration from 2G to 3G) which had the ability of using SIP protocol. Several test scenarios for different functionalities of SIP user agent have been presented by European Telecommunications Standards Institute (ETSI). In this paper, we present testing scenarios for UPDATE method in SIP user agent. However, no scenarios have been given for UPDATE method functionality...
This paper proposes an improved MM (Mobility Management) scheme for fast handover between WiMAX and WLAN networks. It simplifies re-authentication and IP configuration process and supports low handover latency by using general AAA key, MA ID (Mobility Agent Identifier). For this, the proposed scheme allocates MA ID to a MN during initial connection establishment. During handover, the MN requests access...
The intelligent networks used in the cellular technologies today are vital for profitable growth for the network providers. Operators in today's competitive market are desperately looking to improve their profit margins and reduce operating expenses. Many of these networks are also reaching end of support and implementing Next Generation Intelligent Networks (NGIN) is the next step to overcome all...
IMS-based IPTV is an important research direction in next generation IPTV, in which Service Control Server (SCS) as an IMS application server is one of the most critical network entities. By the comparison of differences in behavior of various SIP entities, such as Proxy Server, Virtual User Agent (VUA), Back-to-Back User Agent and Redirect Server, combined with the characteristic of different IPTV...
The large IPv6 address space enables the study on network addresses in a network environment, which ensures the construction of a secured and trusted China next generation Internet (CNGI), it is a tested for next generation Internet (NGI) applications. This paper describes two of the major transition technology and discusses their applicability and uses. The intra-site automatic tunnel addressing...
This paper presents a friendly representation of currently implemented IPv6 address and proposes a more compact and end-user friendly format for IT professionals. It has been evaluated that the next generation IPv6 address would not only facilitate network professionals but also be used by all communities. IPv6 will also be employed on objects other than communication devices for tracking and remote...
We have introduced a new VPN system that uses SIP to enable NGN users to easily create IPsec tunnels. In this paper, to expand business opportunities, we propose a new business model for the system. We will discuss that a service model that has evolved over telephone-networks can be applied to the system.
A technical prerequisite for a converged network is a common service delivery platform that is independent from the access networks below. The 3GPP SIP-based IP multimedia subsystem (IMS) is defined for this purpose. By specification, IMS is the first implementation towards reaching converged communications which allows users to communicate with video, audio and multimedia content, via any fixed,...
The user interaction (UI) function is enhanced to the IMS service architecture by defining the data model between the UI client and the UI server, introducing the user behavior trace function (UBTF), enhancing the interface between a CSCF and a PDFE. Unlike traditional services such as Call Forwarding, Ring Back Tone, etc., which are based on an end user status and/or a pre-provisioned user profile,...
Next generation networks (NGN) advocating network convergence, face a series of important technical challenges, one of them is the management of diverse user identities. Existing solutions tackle only a small range of identity issues, often imposing modifications in established network protocols. We present a new identity management and discovery framework that does not impose modifications on existing...
High-speed switching, QoS (quality of service) provisioning, security, and mobility are main challenges faced with existing networks and to be confronted by next generation network (NGN) researchers and developers. To address these challenges, a new architecture called SUPANET (single-layer user-data switching platform architecture network) has been developed. But most of works on SUPANET have been...
Radio frequency identification (RFID) technology is recently intensively investigated as an effective solution for the next generation communication services in business processes. In this paper we propose an RFID-based location tracking system for distributed offices based on session initiation protocol (SIP). The proposed system is compatible with EPCglobal standard, but extension with SIP at application...
Though all IP networks based on IP technology have been previously proposed and are in the realization phase, ways to provide voice services have not yet been sufficiently studied. In this paper we define the full IP integrated mobile network, an architecture capable of providing voice and other services over IP, and we discuss its advantages and possibilities.
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