Replicated Cache Agent Technique for Wireless Sensor Network

The sensor nodes are battery powered devices, they communicate over a wireless medium and consumes energy during data transmission/reception. The main task in wireless sensor network (WSN) is to reduce power consumption of sensor nodes. It is possible by caching the data to minimize power consumption in WSN. In caching, sink is located inside the sensing region and it sends the queries to sensor nodes. Sensor nodes collect the data about queries and send back to sink. Caching techniques for wireless sensor networks reduce the situations like non availability of data, energy consumption by storing the event information in the cache memory of nodes. To make data access faster these techniques utilizes the benefits of caching because in WSN sensor nodes consume less power during processing as compare to data transmission. In this paper, we proposed a technique named replicated cache agent technique which uses the concept of replicated cache agents to improve performance of the network. Simulation results show that our proposed technique improve throughput and packet delivery ratio. Simulation results also show that proposed technique reduce end to end delay than earlier technique.