User Manual

Hardware Installation and Setup Introduction
11
Figure 2: RSN Back
The RSNs are small, battery-powered devices that may be affixed to equipment or
vehicles, or carried by people that one wishes to monitor. RSNs also incorporate a variety
of sensors including configurable motion and shock detection that can monitor changes in
the resource’s condition and/or status. RSNs have an expansion port for connecting to
external sensors and monitoring devices.
When one or more RSNs come within range of a TeraHop Gateway, they form a wireless
network referred to as an island. RSNs exchange data with each other and with Gateways
over the worldwide-allocated 2.4 GHz radio spectrum. RSNs will forward sensor data
based upon internal, customer-defined profiles. Information from one RSN can be
forwarded from one device to another until the message reaches its target destination.
TeraHop RSNs can be configured with asset-specific data such as the wearer’s name,
special skills, or a fire engine number, a company name, etc. In addition to reporting data
autonomously, RSNs can be queried for their status and settings.
5.2.2 TeraHop Gateway Routers
The TeraHop Gateway Router, hereafter referred to as the GR or simply the Router,
functions as a network edge device in the TeraHop IMS network. It can be thought of as a
combination replay/media converter. It functions as a relay by providing backhaul
network capability for other GR and RSN devices to the Gateway Server and as a media
converter by translating IP-based messages to proprietary reduced complexity radio and
Bluetooth radio protocols. The Gateway Router's primary function is to exchange sensor