Modeling And Performance Analysis Of IEEE 802.15.4 Protocol Under Interference

Due to the low data transmission rate,low power consumption,low cost and low complexity of the wireless network based on the IEEE 802.15.4 standard,the standard is used as Zig Bee in Internet of Things,Wireless HART,Mi Wi,Wireless Sensor Network,Industrial control network and other communication protocols.Meanwhile,it has many applications in family automation,agriculture and industrial production automation,medical and nursing,intelligent transportation and so on.In fact,the IEEE 802.15.4 standard for communication is a band of free open worldwide.Therefore,there are various sources of radio signals in this band,such as radio frequency signals RFID,Wi-Fi,Bluetooth,Zig Bee and so on.Thus,the wireless network based on IEEE 802.15.4 standard is often interfered by other source signals.Under this background,we conducted the study.This paper mainly studies the performance analysis of wireless networks based on IEEE 802.15.4 standard under interference.The main works are as follows:1)Introduced the research background of wireless network based on IEEE 802.15.4 standard in detail and the research status at home and abroad in recent years.2)We studied the saturated traffic network under interference.By analyzing the characteristics of steady state in the saturated network and considering the influence of interference,we model the throughput of network.Compared the mathematical model with simulation model,the accuracy of the mathematical model is confirmed.There is a better sensor node and the optimal parameter mac Min BE makes the optimal throughput.3)We studied the homogeneous periodic traffic network under interference.Since the state of periodic network varies with time slot,it differs from saturated networks.Therefore,analyze the relationship between the state before and after,we model the packet reception rate of the homogeneous periodic traffic network under interference through the iterative way.4)We studied the heterogeneous periodic traffic network under interference.Based on the model of homogeneous periodic traffic network under interference,we analyzed the performance of heterogeneous network.Simultaneously,we pointed out the limitations of heterogeneous network model.