Radios that can “talk” and “listen” at the same time on the
same or adjacent channels, defying self-interference

Kumu Networks offers technology and reference designs that enable innovative solutions to intelligently enhance coverage and boost capacity.

Wireless Infrastructure

5G High-gain mmWave Repeater

Amplify and Forward repeaters are a simple and widely-used solution for enhancing coverage. However, repeaters are only as good as the antenna isolation between donor and access sides – this limits their gain. As a result, typical high-gain repeaters require long cables and complicated installations to place the donor antenna as far as possible from the access antenna. Kumu Networks’ Self-Interference Cancellation technology adds electronic isolation to the physical isolation between the antennas. Thus, a Kumu-powered repeater can achieve extreme high-gain, even when the antennas are right next to each other. This is critical for 5G mmWave coverage due to the limited propagation of these signals.

5G Full-Duplex mmWave Integrated Access-Backhaul (IAB)

Integrated Access-Backhaul (IAB) is a tool defined by 3GPP in 5G standard to efficiently overcome the limited propagation of mmWave signals. It is essentially a wireless 5G mesh node. With Kumu Networks’ Self-Interference Cancellation technology, 5G microcells can reuse their exact same millimeter wave spectrum allocation for both access and backhaul. Kumu Networks’ technology doubles the IAB’s spectral utilization while reducing its latency. It allows operators to avoid complicated frequency planning of multi-hop IAB deployments, and to significantly enhance their 5G mmWave footprint very cost-effectively.

In-Band Full-Duplex LTE Relay Node

Full-Duplex Relays leverage Kumu Networks’ patented Self-Interference-Cancellation technology to provide a flexible, easy to deploy, low-cost way for operators to increase LTE capacity and coverage. The solution is an adjunct to any 3rd party small cell. It uses a standard UE to backhaul the small cell’s eNB on the exact same frequency channel of the eNB. Unlike traditional backhauling solutions that use completely different technology and/or frequency for the backhaul, the in-band full-duplex relay utilizes the exact same set of LTE frequencies for both the access and backhaul.



2.4GHz co-existence of WiFi and Bluetooth/BLE/IoT

Pretty much every WiFi Access Point is equipped with two radios competing for resources in the overly crowded2.4GHz band. These radios interfere with each other. WiFi throughput has to be reduced significantly when a Bluetooth speaker is used, or when IoT devices are monitored. With Kumu Networks’ Self-Interference Cancellation technology, no tradeoffs are required. The two 2.4GHz radios can operate independently without negatively affecting each other.

5GHz/6GHz WiFi mesh solution

Whole-home WiFi systems are now ubiquitous. These systems leverage ad-hoc mesh architecture between WiFi access points distributed throughout the house. With the opening of the 6GHz spectrum for unlicensed use most WiFi APs will likely include both 5GHz and 6GHz radios. One of the challenges is that the 5GHz U-NII-3 band where WiFi is currently deployed extensively will have only a small guard band separating it from the new 6GHz band. This guard-band, known as U-NII-4, is also currently being considered by the FCC for unlicensed use. To take full advantage of the new 6GHz band and concurrently operate multiple radios in this continuous spectrum band, self-interference cancellation is required.

Published with permission of Microwave Journal