An Energy Efficient Data Transmission Mechanism for Middleware of Wireless Sensor Network

Nowadays, the scale of wireless sensor network is getting bigger, and the data in transmission is increasing. Due to the amount of data and unstable network status, leading to the high loss rate of data packet, so part of important data may not be sent in time, especially in the network which has real-time requirements. Currently the research work on the data flow control in sensor network basically limited to the distributed control among sensor network terminals. Data transmission middleware can be introduced to WSN to solve the above problem by centralized control. This paper proposed energy efficient data transfer mechanism that can be adopted in the middleware for WSN. The mechanism makes use of Hidden Markov Chain Model to determine the priority level for the incoming data according to the importance and abnormality of data. It can send data in different priority queue in a round-robin way, to ensure high-priority data be sent in time. Experiment result shows effectiveness of the proposed method.