This paper presents a power saving technique for multi-hop ad hoc networks. Our protocol uses a virtual backbone for energy conservation and routing. We propose a variable history based sleeping time for the non coordinators. Our simulations indicate that this scheme offers more power savings in a network with sparse message density than most other schemes discussed in the literature. We also p...

| Real-time distribution of stored video over wide-area networks is a crucial component of many emerging distributed multimedia applications. The heterogeneity in the underlying network environments is an important factor that must be taken into consideration when designing an end-to-end video delivery system. In this paper, we present a novel approach to the problem of end-to-end video deliver...

We consider the problem of topology control and routing of unsplittable flows in wireless optical networks with point-to-point links. Such networks could form a backbone for either a cellular network or hierarchical ad hoc network. Each backbone node has a limited number of transceivers with which to establish links to neighbors. The objective is to form links and come up with routes so as to m...

Distributed denial of service attacks have become both prevalent and sophisticated. Botnet-driven attacks can be launched from thousands of worm-infected and compromised machines with relative ease and impunity today. The damage caused by such attacks is considerable: the 2004 CSI/FBI computer crime and security survey found that DDOS attacks are the second largest contributor to all financial ...

Very few technologies illustrate the fast rate of technological innovations more than wireless sensor networks. Sensor networks offer a virtual path capability to carry differentiated services efficiently across the wireless backbone. In this paper, we provide a new efficient strategy for loop detection in Multi-protocol Label Switching (MPLS) for wireless networks—MPLS is a novel wireless netw...