User Guide

5
Overview
The document is a User Configuration and Monitoring Guide for the Kumu KR5 UE Relay.
The following SKU variants are currently supported:
SKU
Access LTE Band
Backhaul LTE Band Combinations
KR5192
B2
B2 + B12/13/17
KR5181
B3
B3 + B8/20/28
KR5261
B7
B7 + B8/20/28
This product is intended for use by a qualified network operator in compliance with local safety
regulations and building codes in the country of installation.
Product Support: For Technical Support, email [e-mail]
Functionality
Kumu Networks’ KR5 Full Duplex Self-Backhaul LTE UE Relay (Figure 1) enables small cell LTE
eNodeB’s to backhaul to an LTE macro base-station with the same access frequencies used by
both the small cell and the macro network.
The Relay accomplishes full-duplex operation by utilizing Kumu Networks’ proprietary Self-
Interference Canceller technology to suppress transmitter interference into the receive radios in
real-time, such that both the Uplink and Downlink radios can be operational in the same channel
at all times.
By using Full Duplex wireless backhaul, operators not only reduce frequency planning complexity
but also improve spectral efficiency through channel reuse. The KR5 Relay is easy to install in a
matter of minutes. It eliminates the cost of wired backhaul and minimizes operational costs by
providing an easy to use network management interface.