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Wireless sensor networks require communication protocols for efficiently propagating and maintaining data in a distributed fashion. Ideally, a communication protocol is able to disseminate data quickly to all nodes in the network using as few transmissions as possible, while distributing transmission load fairly. In the context of wireless sensor networks the Trickle algorithm is a popular protocol...
Directed diffusion is a data-centric routing protocol used in wireless sensor networks and uses only local interaction between neighbor nodes. One of the problems of this approach is the mechanism used for routing selection which mostly, leads to select the shortest path between sinks and sources. In this case the nodes in the shortest path will fail after a short period of time due to lack of energy...
In ubiquitous environment, wireless sensor networks are increasingly being deployed to collect information from real world. For sharing huge amount of sensor data efficiently with diverse users, an information dissemination (INFOD) system is very important. In our previous work, we proposed an INFOD system integrated with sensor network and data grid as a publish/subscribe system for a ubiquitous-healthcare...
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