Wireless Sensor Network Based On Ieee802.15.4/zigbee Study

Wireless sensor network is a kind of self-organization wireless network which taking the data as center. The node in network is intensive, huge quantity and covering a large area, and the network topology is dynamic , and the network was self-organization and self- modulation. The node has some characteristics such as low cost, small volume, limited energy and limited computing, limited memory, limited communication. The energy of node is the most decisive factor of designing node.Currently, the research on wireless sensor network concentrates primarily in the protocol of MAC, routing algorithms and integration algorithms. Eeach layer's function define of the protocol stack, data frame form, the uniform interface definition between difference layers and each layer's regular management are considered fewer.The appearance of IEEE 802.15.4/ZigBee protocol which of low cost, low power consumption and simple application offers the international standard for wireless sensor network and application based on micro-control. At the same time it offers the chance for the applications and the development of related industriesIEEE802.15.4/ZigBee protocol is constituted of IEEE802.15.4's PHY and MAC layer, ZigBee network layer and application layer. Its outstanding characteristics are the system supporting low cost operation, easily realization of the dependable data, short distance operation, the very low power consumption and the different layers safety etc.In the paper, the author analyzes the IEEE802.15.4/ZigBee protocol, especially in network formation and route algorithms, and pointed out some advanced thought. Making breakthrough from the decisive points, such as establishment and maintenance of network, the into-network flow, the router consumption and router algorithms etc, the author pointed out some advanced thought, and designed a preparative ZigBee network. Finally, the algorithms are implemented on the Freescals's 13192DSK-A00 development kit.