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We develop analytical models for estimating the energy spent by stations (STAs) in infrastructure WLANs when performing TCP controlled file downloads. We focus on the energy spent in radio communication when the STAs are in the Continuously Active Mode (CAM), or in the static Power Save Mode (PSM). Our approach is to develop accurate models for obtaining the fraction of times the STA radios spend...
The last decade has seen explosive growth in the development of mobile applications. This has increased the demand on the wireless communication services. The capability to achieve wireless access anywhere, anytime, and anyplace has become common expectation as it provides significant flexibility and freedom in mobility. But to achieve global mobility in heterogeneous networks for any mobile device...
Broadcasting is the fundamental operation of mobile ad hoc network, in which a source node transmits the packets that is disseminated to all the nodes in the network. Broadcasting is used in mobile ad hoc network either to broadcast control packets during route discovery or to broadcast the data packets. The simplest method used for broadcast is flooding that degenerates the performance of MANET due...
The demand for the wireless Internet requiring broadband is expected to increase in a dramatic way due to popularity of tri player applications including voice, video, and data transmission. The existing wireless technologies UMTS, WiFi, WiMax, may not satisfy the customer requirements, for many reasons including availability, coverage, cost and most importantly mobility. Each technologies has it...
Data centers (DC) suffer from an increasing number of threats; these are exaggerated by the incredible growth of critical data volumes in addition to vulnerabilities in technologies used for distributed architectures. This paper demonstrates the need to define a new metric for ldquoresilience levelrdquo to complement other system metrics such as performance, availability, robustness and fault tolerance...
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