Reward Oriented Packet Filtering Algorithm For Wireless Sensor Networks

Packet filtering used in query process is all important approach to reduce energy consumption in sensor networks. Interest is used as a constraint to filter uninterested data When users query information. Within interested data some are more important because they have more Valuable information than that of others. We hope to process these more important data first. In this paper, we firstly define reward to denote the importance level of data, and then we present a two tiers buffer model as the platform for our ETRI packet filtering algorithm. We especially present two packet filtering algorithms for real time and non-real time transmissions. Based on Simulation result, we find out that both packet filtering algorithms can substantially improve the quality of information and reduce energy consumption. Copyright (C) 2007 John Wiley & Sons, Ltd.