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There is currently much debate in defining what form the future Internet will take. The current Internet is struggling to meet the needs of an ever-evolving society. This is largely due to the Internet now become a thriving marketplace with services at the core. The range, number and complexity of services are set to increase with an even more dynamic service environment envisioned in the future....
A wireless sensor network can be divided into several clusters. Each cluster has a number of sensors nodes and one of the nodes is elected as the coordinator. The coordinator is responsible for not only the general mission but also collecting the sensed data of other nodes and routing to the sink. Accordingly, the energy-consumption is higher than other nodes. Therefore, the coordinator selection...
In the paper, we propose a N-policy working vacation scheme cyclic polling system for WDM. This system consists of multi-queues (terminals) whose service rates are one of the fast speed and lower speed. The fast speed mode moves cyclically from queue to queue with N-policy. Using the decomposition approach, each queue is analyzed as a single server queue with N-policy working vacation, which works...
Energy balance is an important design consideration in wireless sensor networks (WSNs). In this paper, based on GPSR (greedy perimeter stateless routing), a novel location-based routing algorithm for energy balance in wireless sensor networks is proposed to improve the energy efficiency of the routing approach with respect to both of energy level and location information. Simulations show that the...
The subject of acquiring sensed data with the aid of a mobile collector from a wireless sensor network (WSN) that possesses partitioned/islanded WSNs is investigated. The battery depletion of sensor nodes can lead to partitioned/islanded WSNs; as a result, the base station collects merely somewhat sensed data while data routing difficulty arisen. To ease the effect of partitioned or islanded WSNs,...
An important issue of routing is how to effectively balance the energy consumption of the entire network, and avoid the energy-hole which would lead to the premature death of the network. Based on the characteristics of wireless sensor network, this paper firstly converts the routing problem into linear programming problem, and proves the equivalence between the routing problem and linear programming...
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