10,914 research outputs found
Improved Fair-Zone technique using Mobility Prediction in WSN
The self-organizational ability of ad-hoc Wireless Sensor Networks (WSNs) has
led them to be the most popular choice in ubiquitous computing. Clustering
sensor nodes organizing them hierarchically have proven to be an effective
method to provide better data aggregation and scalability for the sensor
network while conserving limited energy. It has some limitation in energy and
mobility of nodes. In this paper we propose a mobility prediction technique
which tries overcoming above mentioned problems and improves the life time of
the network. The technique used here is Exponential Moving Average for online
updates of nodal contact probability in cluster based network.Comment: 10 pages, 7 figures, Published in International Journal Of Advanced
Smart Sensor Network Systems (IJASSN
Go-With-The-Winner: Client-Side Server Selection for Content Delivery
Content delivery networks deliver much of the web and video content in the
world by deploying a large distributed network of servers. We model and analyze
a simple paradigm for client-side server selection that is commonly used in
practice where each user independently measures the performance of a set of
candidate servers and selects the one that performs the best. For web (resp.,
video) delivery, we propose and analyze a simple algorithm where each user
randomly chooses two or more candidate servers and selects the server that
provided the best hit rate (resp., bit rate). We prove that the algorithm
converges quickly to an optimal state where all users receive the best hit rate
(resp., bit rate), with high probability. We also show that if each user chose
just one random server instead of two, some users receive a hit rate (resp.,
bit rate) that tends to zero. We simulate our algorithm and evaluate its
performance with varying choices of parameters, system load, and content
popularity.Comment: 15 pages, 9 figures, published in IFIP Networking 201
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