Network simulation system of improved Zigbee sensor based on OPNET
1.School of Computer Science and Engineering, Guilin University of Electronic Technology, Guilin, Guangxi 541004, China; 2.Guangxi Key Laboratory of Trusted Software, Guilin University of Electronic Technology, Guilin, Guangxi 541004, China
Abstract：To solve the disadvantages of highlatency, poorscalability and unguaranteed network access to all nodes of existing Zigbee sensor network simulation systems based on OPNET network simulator, a new improved simulation system was proposed. MAC layer protocol process model and wireless channel model of IEEE802.15.4 protocol provided by OPNET simulation development platform were adopted to design a network layer protocol and routing algorithm compatible with Zigbee protocol. A network process model embedded routing function was also established. The model structure and implementation methods of kernel functions were given to compare with Zigbee own model. The properties of network access consumption and endtoend time delay were analyzed to achieve some useful experiences during the procedure of constructing models. The results show that at different network scales, the improved Zigbee simulation system has small network control overheads, low endtoend delay, good scalability and essential router nodes. The proposed simulation system is suitable for sensor networks in industrial monitoring field.
2012, Vol. 33 
