Airlogic ABM-400 Manual de usuario descargar pdf (Pagina 35)

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Part II

A Review of Suitable Wireless Technologies for Tinker Asset

Tracking Applications

In this paper we will address wireless standards suitable for providing the required protocol to

support Automatic Identification (Auto ID) technologies. A brief look into the 802 wireless

space has yielded three well known candidates (based on the range and the required data rate):

WiFi (802.11), Bluetooth (802.15.1) and ZigBee (802.15.4) as possible candidate. On the other

hand, “RFID” describes a class of technology that exchanges data wirelessly for the sole purpose

of automatic identification and item management.The following is a brief description of these

wireless technologies:

WiFi and WiMax:

WiFi is a wireless LAN (WLAN) system which uses radio waves to transmit data between

computing devices. The transmission rate for 802.11 is 2 Mbps. 802.11b has extended the

transmission rate to 11 Mbps. While 802.11g can reach 22 Mbps, 802.11a has a maximum

transmission rate of 54 Mbps

Bluetooth:

This technology uses short-range radio links to replace the data cables connecting portable

and/or fixed electronic devices. It also provides wireless access to LANs and over mobile (cell

phone) internet. It uses Frequency Hop Spread Spectrum (FHSS) to avoid interference. The

Bluetooth Protocol has been developed by the Bluetooth Special Interest Group (SIG). The

gross data rate for Bluetooth is 1 Mbps. As a result, Bluetooth is becoming the preferred

wireless technology for Wireless Personal Area Network (WPAN).

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Airlogic ABM-400 Manual de usuario Pagina 35