Local Area Networks (LAN) White Papers
Capacity, Coverage, and Deployment Considerations for IEEE 802.11g
Overview 802.11g is an exciting new technology that offers additional performance, while providing investment protection for 802.11b clients through backward compatibility. By using previous technologies and economies of scale, 802.11g devices are available at little or no additional cost relative to 802.11b. As such, there are many reasons to begin migrating from 802.11b to 802.11g. 802.11g is not, however, a panacea for WLAN capacity issues. When operating in mixed-mode environments, the throughput and capacity improvements are very modest. Even with advances like CTS to Self and when operating in 802.11g-only mode, capacity will be limited by the small number of available 2.4 GHz channels. Recognizing this, vendors will soon begin providing dual-band 802.11a/g clients at attractive prices. Vendors like Cisco today provide dual radio access points that simultaneous support 5 GHz 802.11a and 2.4 GHz 802.11g for association with almost any type of 802.11 client. As WLAN capacity needs increase, network professionals are well-advised to begin deploying a dual-band infrastructure to access the far greater capacity available with 802.11a. As such, 802.11g should be viewed as a portion of an overall WLAN architecture, not a substitute for 802.11a. 802.11g is a ""bridge"" technology and an ideal means for migrating from low-capacity 802.11b networks to the high-capacity, dual-band WLANs of the very near future.
| Publisher | Cisco Systems | File Format | PDF, requires Acrobat Rdr 5 |
|---|---|---|---|
| Date Published | March 2005 | Downloads | 22 |
| Format | White Papers | ||
| Topics | |||
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