Debessay Fesehaye

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In this paper we analyze and study the impact of cloudlets in interactive mobile cloud applications. To study the impact we propose the design of cloudlet network and service architectures. Our study focuses on file editing, video streaming and collaborative chatting which are representative enterprise application scenarios. Initial simulation results show(More)
This paper introduces the abstraction of energy reserves for sensor networks that virtualizes energy sources. It gives each of several applications sharing a platform the illusion of having its own private energy source. Energy virtualiza-tion is the next logical step in embedded systems after virtu-alizing communication links and CPU capacity. Energy(More)
With the fast growth of (online) content and the need for high quality content services, cloud data centers are increasingly becoming the preferred places to store data and retrieve it from. With a highly variable network traffic and limited resources, efficient server selection and data transfer rate allocation mechanisms become necessary. However, current(More)
The transmission control protocol (TCP) is by far the dominant transport protocol in the Internet. Nonetheless many studies have shown that TCP has many performance problems with the fast growing Internet. As a result, new transport protocols have been proposed to solve the problems. In this paper the author present a simple and short proof that feedback(More)
The transmission control protocol (TCP) is the dominant transport layer protocol for the end-to-end control of information transfer. Accurate models of TCP performance are a key and basic step for designing, dimensioning and planning IP (Internet Protocol) networks. Packet-level simulation models do not scale with the growth of network capacities and number(More)
We present a scalable NDN-based conferencing architecture for conference control and management. Conference control functions are divided into individual service modules and are loaded into different control servers. Control servers are added into the control cluster as the number of parcitipants increases. Participants are allowed to register and receive(More)
Applications like Twitter which use chat-like short messaging systems (SMS) have been widely used in public, political, military, emergency, humanitarian and other fields. Such applications usually involve servers (controllers) which control and forward messages from a sending client to a receiving client. The use of mobile wireless networks for such(More)
Existing literature shows that Peer-to-Peer (P2P) content sharing can result in significant scalability gains in addition to assisting content distribution networks (CDNs). However, currently proposed CDN and P2P hybrid schemes do not provide accurate and efficient incentives to attract and maintain more peers. Besides, they do not use efficient prioritized(More)