Zigbee Wireless Technology Analysis

developed and developing regions in maintaining safety,

smooth traffic flow, and an environmental friendly and

sustainable urban environment. Advanced systems for

preventing accidents via vehicle-to-vehicle and vehicle-to- infrastructure communications are significant, but are being

positioned in relation to growing cellular connectivity for

vehicles.

Intelligent transportation systems (ITS) are

advanced applications which, without embodying

intelligence as such, aim to provide innovative services

relating to different modes of transport and traffic

management and enable various users to be better informed

and make safer, more coordinated, and 'smarter' use of

transport networks by applying information and

communication
As

and when the signals are received, it will raise an alarm or a

warning displaying the necessary message.

II. COMPONENTS USED

A.Zigbee Wireless Technology:

Fig 1: Xbee module

In earlier days the application of the wireless

technology was limited mostly to simple point to point

communication only replacing the cable based

communication systems. The entire communication system

itself became complex after the introduction of the

computer and communication system based on computers.

Several complex networked communication systems like

LAN, WAN, PAN etc. came into use. To replace the cable

based network communication system with wireless

technology demands the design of complex wireless

devices and wireless network protocols.ZigBee is the name

of a wireless protocol maintained by the IEEE 802.15

standard. This is a protocol specified for wireless Personal

Area Network (PAN) using low powered wireless

transceivers. There are already wireless transmitter
Zigbee devices are often used in mesh

network to transmit data over longer distances and passing

data through intermediate devices to reach more distant

ones .Any Zigbee device can be tasked with running a

network. Zigbee is targeted at applications that require a

low data rate, long battery life, and secure networking.

Zigbee has a defined rate of 250 Kbps, best suited for

periodic or intermittent data or a single signal transmission

from a sensor or input device. The technology defined by

the Zigbee specification is intended to be simpler and less

expensive than other WPAN, such as Bluetooth, WiFi.

Types of Zigbee devices:

Zigbee device are of three types. They are

Zigbee co-ordination (ZC):

There is exactly one Zigbee coordinator in each

network since it is the device that started the network

originally. It stores information about the network,

including acting as the trust center and repository for

security keys. The Zigbee coordinator for the central

controller is in this