ZIGBEE BASED TECHNOLOGY APPLIANCE IN WIRELESS NETWORK

Computer Applications

Zigbee communication is specially built for control and sensor networks on IEEE 802.15.4 standard for wireless personal area networks (WPANs), and it is the product from Zigbee alliance. This communication standard defines physical and Media Access Control (MAC) layers to handle many devices at low-data rates. These Zigbee’s WPANs operate at 868 MHz, 902-928MHz and 2.4 GHz frequencies. The date rate of 250 kbps is best suited for periodic as well as intermediate two way transmission of data between sensors and controllers. ZigBee operates in the Industrial, Scientific, and Medical (ISM) radio bands and the exact frequency will depend on where you are in the world. It can use the 868 MHz band in much of Europe, 915 MHz in the USA and 2.4 GHz in many other locations. The 2.4 GHz band is very common as many of the available chipsets use it. The speeds available depend on which band you are using, but the maximum is 250 Kbps. This is slower than other popular wireless technologies such as WiFi but is also cheaper and lower cost.

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