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Data aggregation is an important issue in wireless sensor networks which gathers and routes information through a multi-hop network and processes data at intermediate nodes. This paper considers how to construct data aggregation tree in wireless sensor network where there are several source nodes and a single sink. Ant Colony Optimization algorithm is an effective distributed approach. It has been...
In wireless sensor networks, in-network aggregation is the process of compressing locally the data gathered by the sensor nodes, so that only the compressed data travel across several hops to their destination. We address the problem of aggregating data generated by sporadic events in random locations of the monitored area. The sensor nodes keep their transceivers off most of the time in order to...
Aiming at the periodical data gathering application of wireless sensor network, the transmission delay and the network traffic loads are analyzed for the route-based data aggregation algorithm. It is then investigated how to minimize the network traffic within the data delay bound. An optimization problem is deduced based on the traffic aggregation model. Inspired by the hill-climbing algorithm, a...
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