Kumu Self Backhaul UE Relay User Guide v1.1
Kumu Networks, 960 Hamlin Ct, Sunnyvale, CA 94089, www.kumunetworks.com
1
Overview
The document describes the product requirements for a Full Duplex UE Relay based on Kumu Networks’
cancellation module. The product is designed to be paired with an external eNB, and backhaul the eNB
data to the nearest macro base station using the same access frequencies used by the eNB (and the
macro network).
This document focuses on the system requirements rather than the cancellation requirements.
2
Architecture & Theory of Operation
2.1
System Fit
The Relay is an LTE self-backhaul product that uses the existing cellular bands to provide the backhaul
connection. This approach allows the use of the existing base stations without requiring additional
backhaul equipment at the site. Below is a diagram of a self-backhaul node. In this configuration the
Relay doesn’t look any different to the macrocell than a smartphone.
Figure 1 Relay network usage
