Study of IEEE 802.15.4 Wireless Network with Applications and Interference Mitigation Technique

In this paper I am going to explain about IEEE 802.15.4 (Zigbee) wireless network. IEEE 802.15.4 is a standard which specifies the physical layer and media access control for low-rate wireless personal area networks (LR-WPANs). It is maintained by the IEEE 802.15 working group, which defined it in 2003. It is the basis for the ZigBee, ISA100.11a, WirelessHART, MiWi, and Thread specifications, each of which further extends the standard by developing the upper layers which are not defined in IEEE 802.15.4.The fundamental system considers a 10-meter correspondences extend with an exchange rate of 250 kbit/s. Tradeoffs are conceivable to support all the more drastically implanted gadgets with even lower control necessities, through the meaning of not one, but rather a few physical layers. Bring down exchange rates of 20 and 40 kbit/s were at first characterized, with the 100 kbit/s rate being included the present correction. and it’s various application in the field of, Industrial,Agricultural,Vehicular , Residential, Medical and also discuss about interference mitigation technique like frequency agility mechanism. To improve the robustness of ZigBee networks, a feature called frequency agility is specified in the ZigBee standard. we extend the frequency agility function by enabling a single ZigBee network to work on multiple channels. As some local interference appears, the part of the network which is under the interference can move to a new idle channel while maintaining the communication links with the other part of the network which stays on the original channel and the moved part can move back to the original channel when the interference disappears