Installation Guide
IBR Installation Guide
Page 5 of 32 Doc # 770-00001-3
Aug. 30, 2013
1. Introducing Intelligent Backhaul Radio (“IBR”)
1.1 Overview
IBR combines a Carrier Ethernet switch and an SC-FDE
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radio in a small, passively-cooled,
environmentally protected package for use in 4G cellular backhaul and fiber extension
applications. It is designed for small cell deployment in dense urban environments where
line of sight between radios is difficult or impossible to achieve. IBR can be mounted on
masts, poles, walls, cell towers, or in other such locations and does not require precise
antenna alignment for reliable communications.
NOTE: For safety reasons and FCC compliance, IBR should be installed in a restricted
access location that is accessible only by authorized service personnel.
1.2 Transmit & Receive Frequencies
There are two versions of IBR that operate together to form the two ends of a link.
o IBR58, a 5.8 GHz radio, transmits in the band from 5.725 GHz to 5.85 GHz and
receives in the band from 5.25 GHz to 5.35 GHz.
o IBR53, a 5.3 GHz radio, transmits in the band from 5.25 GHz to 5.35 GHz and
receives in the band from 5.725 GHz to 5.85 GHz.
1.3 Radio Features
IBR uses adaptive rate modulation, proprietary interference avoidance and cancellation
techniques, and antenna array signal processing to deliver reliable and secure high speed
data transmission over links where line-of-sight between radios is difficult or impossible to
achieve. The table below shows IBR performance in a typical installation.
IBR Performance
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Data Rate
Scalable to 500 Mbps
Average Latency
< 500 μsec
Operating Range
Up to 500m NLOS
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and 2Km LOS
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Operating Frequencies
5.25 to 5.35 GHz and 5.725 to 5.85 GHz (U-NII/ISM
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)
EIRP
< 30 dBm (5.3 GHz); < 36 dBm (5.8 GHz)
1.4 Switch Features
IBR provides the following Carrier Ethernet 2.0 features:
o Layer 2 transport
- VLAN (up to 4096)
- Bridge mode (pass through)
o Management
- CLI
- Telnet
- SSH
- Serial console
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Single-carrier-based frequency domain equalization
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Performance might vary depending on environmental conditions
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Non-line-of-sight
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Line-of-sight
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