Cisco Cisco Nexus 7000 Series Network Analysis Module (NAM-NX1) White Paper
Wireless LAN Design Guide for High Density
Client Environments in Higher Education
11 © 2011 Cisco and/or its affiliates. All rights reserved.
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The time scale above is in microseconds (µs). At the top end of the chart, a 2048 byte packet is transmitted at 1 Mbps, taking
almost .02 seconds of airtime. Only one packet can be in the air at a time, and the faster that packet gets through, the better use
made of the time available. Looking at this from a different perspective, reaching the bandwidth goals while supporting 802.11b
and 802.11g will require more radios and cells and more advanced isolation techniques to implement them successfully.
almost .02 seconds of airtime. Only one packet can be in the air at a time, and the faster that packet gets through, the better use
made of the time available. Looking at this from a different perspective, reaching the bandwidth goals while supporting 802.11b
and 802.11g will require more radios and cells and more advanced isolation techniques to implement them successfully.
Theoretically, if three radios could be put on the same pole serving all three non-overlapping channels in the same cell, a cell
could be created that holds three times the bandwidth in 2.4 GHz and as much as 20 times that in 5 GHz, Figure 6.
could be created that holds three times the bandwidth in 2.4 GHz and as much as 20 times that in 5 GHz, Figure 6.
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In 5 GHz, there is more spectrum and the resulting bandwidth for a theoretical single cell increases dramatically, Figure 7.