Cisco Cisco BPX 8680 8800 Series MGX-CESM-T3 E3 CESM Weißbuch
Wireless LAN Design Guide for High Density
Client Environments in Higher Education
5 © 2011 Cisco and/or its affiliates. All rights reserved.
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In a high-density environment such as a lecture hall or auditorium, the densities of users in the occupied space increase
dramatically. User seating is typically clustered very close together to achieve high occupancy. The overall dimensions of
the space are really only useful for getting an idea of the free space path loss of the AP signal. User densities are not evenly
distributed over the entire space as aisle ways, stages, and podiums represent a percentage of space which is relatively
unoccupied. The RF dynamics of the AP are very different from those experienced at the user level. The APs are exposed with
an excellent view of the room and the user devices will be packed closely together with attenuating bodies surrounding them.
dramatically. User seating is typically clustered very close together to achieve high occupancy. The overall dimensions of
the space are really only useful for getting an idea of the free space path loss of the AP signal. User densities are not evenly
distributed over the entire space as aisle ways, stages, and podiums represent a percentage of space which is relatively
unoccupied. The RF dynamics of the AP are very different from those experienced at the user level. The APs are exposed with
an excellent view of the room and the user devices will be packed closely together with attenuating bodies surrounding them.
The single biggest sources of interference in the room are the client devices themselves. For each user sitting in the auditorium
who can rest their hand comfortably on the back of the seat in front of them, the distance is approximately three feet, with an
average seat width of 24 inches. This yields what is defined as a high-density environment, with less than 1 square meter per
device deployed, assuming one or more devices connected per seat.
who can rest their hand comfortably on the back of the seat in front of them, the distance is approximately three feet, with an
average seat width of 24 inches. This yields what is defined as a high-density environment, with less than 1 square meter per
device deployed, assuming one or more devices connected per seat.
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