User guide

March 2005 Understanding Canopy Networks
Through Software Release 6.1
Page 76 of 425 Issue 1
Canopy System User Guide
Downlink
Percent
Data Slots
Down
Data Slots
Up
5 2 27
0 2 27
Changing Network Conditions
The effects of changing network conditions on PTMP throughput are indicated in
Table 19.
Table 19: Effects of network conditions on PTMP throughput
Effect on Throughput
Changing Network Condition
Aggregate AP Short Link Long Link
Increasing the Max Range
parameter setting in the AP
somewhat
decreased
1
Increasing the number of SMs that
register in the AP
Increase in downlink traffic
Increase in uplink traffic
no effect
somewhat
decreased, but
equals that of a
long link
somewhat
decreased, but
equals that of a
short link
Increasing the average bandwidth
allotted to the SMs that register in
the AP
no effect, even
when the
additional
bandwidth is used.
depends on
subscriber usage
of the additional
bandwidth, but
equals that of a
long link
depends on
subscriber usage of
the additional
bandwidth, but
equals that of a
short link
NOTES:
1. To avoid a decrease of unnecessary proportion, set as not much further than the
distance between the AP and the furthest SM that registers in the AP.
8.2 BH-BH LINKS
8.2.1 BH-BH Link Distances
Backhaul modules are available in
◦ 2.4-, 5.2-, and 5.4-GHz frequency bands in 10- and 20-Mbps data transfer rates
◦ 5.7-GHz frequency band in 10- and 20- and 45-Mbps data transfer rates

NOTE:
The 45-Mbps BH is supported by the dedicated document Canopy
45-Mbps Backhaul User Guide.