An Efficient Message Distribution Scheme for Data Query in Sensor Networks

In sensor networks, a data query can be named according to the physical attributes, and is generally diffused throughout the network to retrieve sensor data. However, the direct distributions of queries into the network will cause a large traffic overhead and high energy consumption. In this paper, we propose a localized query forwarding scheme based on the processing of query´s name. In contrast to the conventional distributions of data query message, a query´s name is resolved into the IDs of corresponding group of sensor nodes before being distributed to the network. Therefore, the query is efficiently forwarded into the network within a localized area. The proposed approaches highly reduce the query overhead in the network and save the energy consumption of sensor nodes.