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On-Ramp Wireless Confidential and Proprietary 3 010-0045-00
2 ULP Network Overview
The On-Ramp Wireless ULP technology network monitors critical infrastructure devices in a
wide-area territory. A network deployment contains many Access Points (APs) that are
geographically distributed in a specific territory. The APs create a wireless network which
monitors end devices. End devices can include:
Federal Aviation Administration (FAA) obstruction light Remote Monitoring Units (RMUs)
Distribution line Fault Circuit Indicators (FCIs)
The ULP network provides advantages for wide area sensor networking. The ULP network
enables powered and battery operated Transmission and Distribution Smart and Remote
Monitoring applications. The ULP network is deployed in an infrastructure efficient star topology
and operates at -142 dBm receive sensitivity. Operating at this level provides a 40dB link budget
advantage over competitive technologies. The ULP network, combined with a unique, multiple
access scheme, services hundreds of thousands of sensors on a network. The ULP network is
deployed in above-ground, pad-mount, and below-ground applications. The link budget
advantage allows a ULP system to reliably operate in the unlicensed 2.4 GHz ISM band. This
eliminates spectrum and recurring data service charges. The link budget advantage also provides
utility companies with a network that meets the performance and security requirements of the
critical infrastructure.
The following figure illustrates the functional overview of the ULP network.
Figure 2. Functional Overview of the ULP Network
The On-Ramp Wireless EMS provides network control and alarm status for the ULP Gateway
(GW), APs, and end devices in the network.