25-05-2012, 12:09 PM
ZigBee
ZIGBEE PROTOCOL IMPLEMENTATION.ppt (Size: 578.5 KB / Downloads: 37)
ZIGBEE INTRODUCTION
A specification from the ZigBee for a set of high-level communications protocols based on the IEEE 802.15.4 standard for a low-data-rate wireless personal area network (WPAN) comprising devices of low complexity and long battery life. ZigBee is designed for connecting devices in ad hoc networks over very short distances with very low power consumption
Z operates in (ISM) radio bands using (DSSS) transmission.;
868 MHz in Europe, 915 MHz in Australia, and 2.4 GHz in most jurisdictions worldwide.
Device types:
There are three different type the
:ZigBee coordinator (ZC): coordinator forms the root s of ZigBee devices
ZigBee Router (ZR): act as an intermediate router, passing data from other devices.
ZigBee End Device (ZED): Contains just enough functionality to talk to the parent node
Function Devices:
a full-function device (FFD) and a reduced-function device (RFD).
The FFD can operate in three modes serving as a PAN coordinator, a coordinator, or a device
An RFD is intended for applications that are extremely simple
a 64-bit IEEE address or a 16-bit short address assigned during the association procedure
Protocols
The current profiles derived from the ZigBee protocols support beacon and non-beacon enabled networks.
. Beacon and Superframe Structure
MODES OF OPERATION:
Transparent Operation:
Serial-to-RF Packetization: When operating in this mode, the modules act as a serial line replacement - all UART data received
API Operation: API (Application Programming Interface) Operation is an alternative to the default Transparent Operation.
ZIGBEE PROTOCOL IMPLEMENTATION.ppt (Size: 578.5 KB / Downloads: 37)
ZIGBEE INTRODUCTION
A specification from the ZigBee for a set of high-level communications protocols based on the IEEE 802.15.4 standard for a low-data-rate wireless personal area network (WPAN) comprising devices of low complexity and long battery life. ZigBee is designed for connecting devices in ad hoc networks over very short distances with very low power consumption
Z operates in (ISM) radio bands using (DSSS) transmission.;
868 MHz in Europe, 915 MHz in Australia, and 2.4 GHz in most jurisdictions worldwide.
Device types:
There are three different type the
:ZigBee coordinator (ZC): coordinator forms the root s of ZigBee devices
ZigBee Router (ZR): act as an intermediate router, passing data from other devices.
ZigBee End Device (ZED): Contains just enough functionality to talk to the parent node
Function Devices:
a full-function device (FFD) and a reduced-function device (RFD).
The FFD can operate in three modes serving as a PAN coordinator, a coordinator, or a device
An RFD is intended for applications that are extremely simple
a 64-bit IEEE address or a 16-bit short address assigned during the association procedure
Protocols
The current profiles derived from the ZigBee protocols support beacon and non-beacon enabled networks.
. Beacon and Superframe Structure
MODES OF OPERATION:
Transparent Operation:
Serial-to-RF Packetization: When operating in this mode, the modules act as a serial line replacement - all UART data received
API Operation: API (Application Programming Interface) Operation is an alternative to the default Transparent Operation.