User's Manual Part 1

Release8PlanningGuide
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Issue2,November2007 Draft5forRegulatoryReview 140
12.5.6 5.7‐GHzChannels
Channel selections for the AP in the 5.7-GHz frequency band range depend on whether
the AP is deployed in cluster.
5.7-GHz BH and Single AP Available Channels
A BH or a single 5.7-GHz AP enabled for frequencies can operate in the following
channels, which are separated by 5-MHz increments.
(All Frequencies in GHz)
5.735 5.765 5.795 5.825
5.740 5.770 5.800 5.830
5.745 5.775 5.805 5.835
5.750 5.780 5.810 5.840
5.755 5.785 5.815
5.760 5.790 5.820
The channels of adjacent APs should be separated by at least 20 MHz. However,
25 MHz of separation is advised, especially for Advantage APs to take advantage of 2X
operation.
5.7-GHz AP Cluster Recommended Channels
Six non-overlapping channels are recommended for use in 5.7-GHz AP clusters:
(All Frequencies in GHz)
5.735 5.775 5.815
5.755 5.795 5.835
The fully populated cluster requires only three channels, each reused by the module that
is mounted 180° offset. The six channels above are also used for backhaul point-to-point
links.
As noted above, a 5.7-GHz AP can operate on a frequency as high as 5.840 GHz. Where
engineering plans allow, this frequency can be used to provide an additional 5-MHz
separation between AP and BH channels.
12.5.7 ChannelsAvailableforPTP400andPTP600radios
Channel selections for radios in the PTP400 and PTP 600 series are quoted in the user
guides that are dedicated to those products. However, these units dynamically change
channels when the signal substantially degrades. Since the available channels are in the
5.4- and 5.7-GHz frequency band ranges, carefully consider the potential effects of
deploying these products into an environment where traffic in this range pre-exists.
12.5.8 ExampleChannelPlansforAPClusters
Examples for assignment of frequency channels and sector IDs are provided in the
following tables. Each frequency is reused on the sector that is at a 180° offset. The entry
in the Symbol column of each table refers to the layout in
Figure 32 on Page 143.