Antenna Seperation - Cisco BWX 8305 Installation And Commissioning Manual

BWX 8305 Basestation Antenna Installation
Figure 6-7

6.3.4 Antenna Seperation

When installing multiple BSs in the same geographical area, it is important to allow enough radiation
separation so that they do not interfere with one another.
for avoiding adjacent interference. The illustration shows the horizontal and vertical separation in feet
and in meters for panel antennas.
There can be no co-location of MC-SCDMA with Mobile WiMAX Basestations. If 2 or more BSs are
Caution
co-located on the same structure, they must run the same technology or be upgraded in the same
maintenance window. Use frequency separation to minimize interference between a MC-SCDMA and
Mobile WiMAX Basestation. A reasonable frequency separation is 15 MHz for BSs that are 2 kilometers
apart. The exact frequency separation may differ on a case-by-case basis. Therefore, 15 MHz with 2
kilometers between Basestations may not provide enough separation. Refer to the BWX Mobile WiMAX
Migration Planning Guide for more information on distance requirements.
All BSs in a network must have the same DL/UL symbol ratio. The default recommended ratio is 32/15.
Caution
Cisco does not support basestations that use different DL/UL symbol ratios in the same area because they
will interfere with each other. Please refer to the BWX EMS Configuration Guide for more information
on parameter settings.
BWX 2305 Basestation Installation and Commissioning Guide
6-8
Apply Anti-oxidant Joint Compound
Chapter 6
Figure 6-8 provides some general guidelines
Installation
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