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Comparison of 802.16 with 802.11
IEEE 802.16 is a standard that defines Wireless Interoperability for Microwave Access (WiMAX), a wireless technology that delivers network services to the last mile of broadband access.
The IEEE 802.11 standard lays down the specifications of wireless local area networks (WLAN) or Wi-Fi, that connects wireless devices within a limited area.
Comparison of 802.16 and 802.11
| Feature | IEEE 802.16 (WiMAX) | IEEE 802.11 (Wi-Fi) |
|---|---|---|
| Technology | Defines WiMAX | Defines WLANs or Wi-Fi |
| Application Area | Last-mile of broadband wireless access | Limited area forming wireless LANs |
| Versions | 802.16a, 802.16d, 802.16e, 802.16m | 802.11a, 11b, 11g, 11n, 11ac, 11ad |
| Domain of Usage | Wide area, mostly outdoors | Limited area, mostly indoors |
| Coverage Area | 7 km to 50 km radius | 30 to 100 meters |
| Data Rate | 5 bps/Hz, up to 100 Mbps in 20 MHz channel | 2.7 bps/Hz, up to 54 Mbps in 20 MHz channel |
| Frequency Band | 2 GHz to 11 GHz | 2.4 GHz (also 5 GHz in newer versions) |
| Encryption | Mandatory DES with optional AES | RC4 (Rivest Cipher 4); 802.11i uses AES |
| Quality of Service (QoS) | Multiple QoS options: UGS, rtPS, nrtPS, BE | No built-in QoS; 802.11e provides QoS |
| Ubiquitous Services | Provides ubiquitous networking services | Cannot provide ubiquitous services |
| Scalability | Scale from one to hundreds of CPEs with unlimited subscribers per CPE | Scale from one to tens per access point |
Key Differences
The primary distinction between these standards lies in their intended use cases. WiMAX (802.16) is designed for metropolitan area coverage, providing broadband internet access over long distances to serve as a "last mile" solution for internet service providers.
Wi-Fi (802.11) is optimized for local area networking within buildings or small outdoor areas, connecting devices like laptops, smartphones, and IoT devices to existing internet infrastructure.
Conclusion
IEEE 802.16 (WiMAX) provides wide-area broadband access with greater coverage and built-in QoS, while IEEE 802.11 (Wi-Fi) excels in local area connectivity with simpler deployment. Both technologies complement each other in modern wireless networking infrastructure.
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