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wilamowski-b-m-irwin-j-d-industrial-communication-systems-2011

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52-2 Industrial Communication Systems<br />

WAN (such as cellular networks, WiMax IEEE 802.16e, WiBro)<br />

WMAN (such as WiMAX IEEE 802.16-2004)<br />

WLAN (WiFi flavors of IEEE 802.11)<br />

WPAN (such as Bluetooth<br />

IEEE 802.15.1, UWB)<br />

FIGURE 52.1<br />

Comparison of networks types.<br />

WiMax 802.16<br />

transmitter<br />

ISP<br />

connections<br />

Internet<br />

backbone<br />

WiMax 802.16<br />

transmitter<br />

ISP<br />

Line-of-sight<br />

backhoul<br />

WiMax 802.16<br />

transmitter<br />

Home LAN<br />

No line-of-sight<br />

FIGURE 52.2<br />

The example of WiMAX configuration.<br />

Figure 52.1 describes the comparison of several widely used network types: WANs, wireless broadband<br />

(WiBro), WirelessMAN, wireless local area networks (WLANs), and wireless personal area networks<br />

(WPANs).<br />

WiMAX technology is available in two versions: fixed wireless and mobile. The fixed wireless version<br />

(point-to-point), known as 802.16d-2004, was designed as replacement for broadband cable access<br />

or DSL. The mobile version (point-to-multipoint), 802.16e-2005 supports roaming in addition to fixed<br />

wireless applications. For this reason, the two standards are generally known as fixed WiMAX and<br />

mobile WiMAX.<br />

© <strong>2011</strong> by Taylor and Francis Group, LLC

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