Figure 23 Net Throughput Per Eum - 100 Eums, 60 Kbyte Http Every 2 Minutes - WaveRider LMS4000 User Manual

To illustrate the output of the model, consider the following example. First of all, make the
following general assumptions:
• LMS4000 900 raw channel rate is MHz 2.75 Mbps
• There are no channel errors
• Servers are fast and do not present a bottleneck
• There are no external link or backhaul bottlenecks
• Typical CCU to EUM range is 0 to 3 km
• GOS is unlimited
Furthermore, assume that typical end-user traffic is Web browsing, averaging one 60 kbyte
HTTP transfer every two minutes. This traffic pattern is based on analyses of busy-hour data
collected from LMS systems consisting primarily of residential users. In normal usage, users
randomly and independently download a file or Web page, take time to process the
information, and then download another file or Web page. Assuming this type of traffic, the
performance shown in
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0.6
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Figure 23
From Figure 23, each of the 100 end users can expect a net throughput better than 800 kbps
80% of the time, and better than 1.3 Mbps 20% of the time. You can also assess system
APCD-LM043-4.0
Figure 23 results.
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0
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Net Throughput per EUM — 100 EUMs, 60 kbyte HTTP every 2 minutes
1000 1500
Performance (kbps)
3 Detailed Description
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