Overview of ZigBee Communication Network Standard A new wireless communication network standard - ZigBee China ZigBee Alliance Forum www.51zigbee.com Content z Wireless communication basics z Modern wireless communication standards z ZigBee network standards z ZigBee development platform and products 2005-06-262 Content z Wireless communication basics z Modern wireless communication standards z ZigBee network standards z ZigBee development platform and products 2005-06-263 Wireless devices z Common wireless communication devices Radio z Television z Remote controls z Mobile phones zz Different types of wireless devices work differently and in different frequency bands 2005-06-264 Wireless spectrum 2005-06-265 Wireless communication system model z Transmitter Signal source Modulator Antenna z Receiver Modulation Signal Demodulator Antenna 2005-06-266 Propagation characteristics of radio waves (1) 2005-06-267 Propagation characteristics of radio waves (2) 2005-06-26 8 Wireless network topology (1) Direct connection replaces wired connection Point-to-point communication Such as infrared IrDA 2005-06-26 9 Wireless network topology (2) Star network has a central routing and control point All data passes through the central control point Supports point-to-point and point-to-multipoint communication Such as Wi-Fi, GSM, Bluetooth, etc. 2005-06-26 10 Wireless network topology (3) Tree network Characteristics are similar to star network Mesh network Multi-path data transmission Self-configuration and repair Such as ZigBeez 2005-06-26 11 Multiplexing technology of wireless network FDD: frequency division duplex TDD: time division duplex 2005-06-26 12 Multi-user access technology for wireless networks FDMA: Frequency Division Multiple Access TDMA: Time Division Multiple Access CDMA: Code Division Multiple Access 2005-06-2613 Expand...
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