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In order for the mobile networks to stay connected to the Internet, Network Mobility (NEMO) is involved with the management of the different types of movements by mobile routers during rapid changes of the Point of Attachment (PoA). Accordingly to achieve seamless handoff with lower delay and packet loss in NEMO environment, it is very important to get(More)
One of the causes of congestion in computer networks is the inherent burstiness of network traffic. Traffic includes unpredictable file or web page transfers as well as variable rate media streams. Traffic shaping means to smooth the traffic as a function of time. Shaping and congestion control is very important especially in cases where Variable Bit Rate(More)
When a mobile node moves and changes its connectivity from one RER to another, the new RER does not have the context unless it is transferred from the old RER. We conducted a study considering a diffserv domain where RERs run TSW scheme to meter the flows and mark the packets. In this paper we present the results of this study, which shows that by(More)
Due to the dynamic nature of mobile ad-hoc networks (MANETs), there are many issues which need to be tackled. One of the areas for improvement is quality of service (QoS) routing. Various approaches and enhancements have been proposed including QoS-AODV. It is proposed to enhance one of the existing routing protocols for MANET namely AODV (ad-hoc on-demand(More)
There is a growing interest in providing Internet services to the mobile nodes. When mobile nodes travel from one router's service area to another, the time-sensitive applications may see degradation in service. We investigate into the effects of handoff on service quality of mobile nodes. Several experiments are conducted using various packet-metering(More)
We reviewed the confidentiality and authentication for multi-party applications. A conceptual model of a secure multicast network has been presented by adding a quantum key distribution (QKD) network to its architecture. The model is divided into three phases, the first phase, QKD network generate secure keys to encrypt not only data but also authentication(More)
Multicast routing is a key technology for modern communication networks. It sends a single copy of a message from a source to multiple receivers over a communication link that is shared by the paths to the receivers. This is especially appropriate in wireless environments where bandwidth is scarce and many users are sharing the same wireless channels. In(More)
The advantages offered by Image Guided Surgery (IGS) to medical professionals during a minimally-invasive surgical operation are overwhelming. Although a sophistication growth in imaging techniques can provide the surgeon with high quality guidance but there is still a need for more improvement in IGS application such as: computational time which impedes(More)
The experiment of decoy state QKD has been reported using commercial QKD system based on a standard bi-directional ‘Plug & Play’ set-up. By making simple modifications to a commercial quantum key distribution system, decoy state QKD allows us to achieve much better performance than QKD system without decoy state in terms of key generation(More)