WaveRider LMS4000, User Manual

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3 Detailed Description
APCD-LM043-4.0 45
By increasing the number of EUMs to 300 and maintaining the same level of traffic per EUM,
the modelled performance becomes
Figure 25 Net Throughput per EUM — 300 EUMs, 60 kbyte HTTP every 2 minutes
From Figure 25 , each of the 300 end users can expect a net throughput better than 300 kbps
80% of the time, and better than 750 kbps 20% of the time. Once again, you can assess
system performance based on the number of EUMs that are associated at any given time, as
is illustrated in
Figure 26 .
Figure 26 Associated EUMs — 300 EUMs, 60 kbyte HTTP every 2 minutes
From Figure 26 , of 300 EUMs, eight were associated 12% of the time, and 14 were associated
less than 3% of the time. The amount of time 25 or more EUMs were associated was less than
0.4%.
0
0.2
0.4
0.6
0.8
1
0 500 1000 1500 2000
Performance (kbps)
Probability
that
P
erformance
w
a
s
E
xceeded
0
2
4
6
8
10
12
14
0 2 4 6 8
10 12 14 16 18 20 22
Associated EUMs
Frequency
(%)