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The next generation networks is based on packet switching which involves voice, data and multimedia such as audio and video. It provides fixed mobile convergence to all valued customers. The 8 core exchanges in India is now commissioned and about 136 core switches have started to work. The BSNL has planned a huge network wherein all the traditional voice and data customers migrate from C-Dot TDM towards...
Customer Edge Switching (CES) provides policy based reachability to hosts in a private network without the disadvantages caused by traditional mechanisms for traversing Network Address Translators (NAT). The solution enables transparent communication across address realms without keep-alive signalling and application layer code in end systems as required by the current recommended approach to NAT...
Session switching or session transfer across devices has become a common feature in today's telecommunication world, given that a single user could easily own more than one device. However, most of the systems in the literature are designed for homogeneous network, i.e. switching session within a common network such as across only IP devices. In this paper, we design a prototype to support session...
With the fast development of all kinds of communication technologies and the popularization of Internet, Next Generation Networks have a major impact on existing communications technology, which cover conventional PSTN (Public Switched Telephone Network) type of data and voice communications to multiple applications, consisting of voice, data and video and other new media applications. The key issue...
In this paper a prototype of an intelligent micropump is presented. The electrical parameters of the micropump are regulated by measuring the actual flow rate with an integrated thermal flow sensor. The micropump moves liquids with a regulated flow rate with a range of 100 μl/min to several ml/min. The accuracy is better than 10%. The micropump and flow sensor are controlled via integrated...
Base on the characteristics of IPTV(Internet Protocol television) Bearer Network, this paper discusses two core technologies of IPTV -- IP Multicast technology and CDN (Content Delivery Network), pointing out the advantages and shortcomings of them, then makes an analysis on several update improvement strategies of IPTV, including Controllable IP Multicast technology, P2P technology, DRM and QoE.
In order to solve the problems that the process of the evolution is only in one step and the investment in network is so costly when the network in nowadays evolutes to NGN(Next Generation Networking), this paper has get a deep research about the soft switch, media gateway control protocol, access gateway and media server and such kind of technology and then submit a kind of design methodology, through...
The Next-Generation Network (NGN) has Application Network Interfaces (ANIs) by which 3rd party application services are easily created. For session-control ANI (for example, ldquomakeCallSessionldquo of the Parlay-X), Application Server (AS) functions process a call using three SIP methods (REFER method, 3rd Party Call Control (3PCC) method, Media Bridge method). We propose a SIP method escalation...
In this paper we present a uniform negotiation and delivery mechanism for SIP-based conferencing system over IP network. With this mechanism rich innovative collaboration services can be developed conveniently to provide users with novel communication experience in IETF centralized conferencing (XCON) system. The mechanism adopts the extended SDP and offer/answer model as media description and negotiation...
The last decades has seen tremendous shifts in the telecommunications landscape. Telecom operators and service providers, are responding by adopting strategies that lower their costs of operations and allow them to offer rapidly new services with better revenues. The next generation network (NGN) is a network architecture that is ultimately designed for new service provision, independent of access...
Mobile nodes moving across heterogenous access networks need to perform mobile IP handovers to maintain continuity of Internet access. The IEEE 802.21 framework was defined to support such handovers by providing link layer intelligence and media independent handover control facilities to the user entities. This framework, however, does not provide all controls necessary to perform seamless handovers...
Video-streaming can now be offered on third-generation (3G) mobile networks. Most research efforts have focused on video download. This paper presents a detailed study of challenges faced for successfully deploying applications requiring life video upload. Both subjective and objective qualities as well as the effects of mobility are analyzed on real 3G networks. Consequently, video profiles are identified...
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