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Efficient data gathering is an important issue for wireless sensor networks with mobile sinks. However, high sink update cost causes sensor nodes to consume much energy, especially when sinks move frequently. This paper proposes two energy-efficient data gathering strategies in wireless sensor networks using a mobile sink. The sink moves based on improved Gauss-Markov mobility model (IGMM) and full...
In wireless sensor networks, clustering algorithm is widely used to extend network life and reduce data redundancy. However, the existing algorithms were usually for static nodes and did not consider the event-aware issue, and the evaluation of a new algorithm mostly focused on network life. For these reasons, we propose an Event-Aware clustering algorithm based on the minimum ID algorithm, further...
In IEEE 802.16e system, mobile station (MS) is usually powered by battery. To save the limited power, IEEE 802.16e standard specifies sleep mode operation for power management. There are two significant performance metrics in sleep mode operation, one is energy consumption, the other is waiting delay. Our research is to shorten energy consumption and waiting delay. In this paper, a hybrid algorithm...
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