User`s guide

Planning and Installing Wireless LANS
User’s Guide
5-8
BreezeNET PRO.11 Series
5.1.3 Multicell Configuration
Areas congested by many users and a heavy traffic load may require a multicell
structure. In a multicell structure, several Access Points are installed in the same
location. Each Access Point has the same coverage area, thereby creating a
common coverage area that increases aggregate throughput. Any workstation in the
overlapping area can associate and communicate with any Access Point covering
that area.
Figure 5-5. Multicell Configuration
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To set up a BreezeNET multicell:
1. Calculate the required number of Access Points as follows: multiply the
number of active users by the required throughput per user, and divide the
result by 1.5Mbps (which is the net throughput supported by collocated Access
Points). Consider the example of five active stations, each requiring 0.5 Mbps
throughput. The calculation is (5*.5)/1.5=1.6. Two Access Points should be
used. This method is accurate only for the first few Access Points.
2. The aggregate throughput of the common coverage area is equal to the number
of co-located Access Points multiplied by the throughput of each individual
Access Point, minus a certain amount of degradation caused by the interference
among the different Access Points.