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Multiple Mobile-Sink Path Selection Technique for Wireless Sensor Networks in Efficient Manner

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The wireless sensor network is the emerging trends nowadays to improve multiple mobile sink for data transformation an algorithm weighted rendezvous algorithm is used. In existing system mobile sink path is used with less efficiency .This system have less data transformation rate and chance for loss of scheduling data at the time of transformation in the proposed system efficiency of the data transformation be improved by using the weighted rendezvous planning algorithm. Data collection rate is improved. WRP is validated via extensive computer simulation, and our results demonstrate that WRP enables a multiple mobile sink to retrieve all sensed data within a given deadline while conserving the energy expenditure of sensor nodes. More specifically, WRP reduces energy consumption by 25% and increases network lifetime by 54%, as compared with existing algorithms.
Keywords: Data collection, multiple mobile sinks, scheduling, wireless sensor networks (WSNs).
WIRELESS sensor networks (WSNs) are composed of a large number of sensor nodes deployed in a field. They have wide-ranging applications, some of which include military environment monitoring agriculture home automation smart transportation and health . Each sensor node has the capability to collect and process data, and to forward any sensed data back to one or more sink nodes via their wireless transceiver in a multihop manner. In addition, it is equipped with a battery, which may be difficult or impractical to replace, given the number of sensor nodes and deployed environment. These constraints have led to intensive research efforts on designing energy-efficient protocols . This is critical as sensor nodes in dense parts of a WSN generate the highest number of packets. In multihop communications, nodes that are near a sink tend to become congested as they are responsible for forwarding data from nodes that are farther away. Thus, the closer a sensor node is to a sink, the faster its battery runs out, whereas those farther away may maintain more than 90% of their initial energy. This leads to nonuniform depletion of energy, which results in network partition due to the formation of energy holes. As a result, the sink becomes disconnected from other nodes, thereby impairing the WSN. Hence, balancing the energy consumption of sensor nodes to prevent energy holes is a critical issue in WSNs.These mobile sinks survey and collect sensed data directly from sensor nodes and thereby help sensor nodes save energy that otherwise would be consumed by multihop communications.


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