User's Manual

COMTRAC RADIO
USER MAUAL
Business Entity Identifier
Business Identifier
DTC
Revision
9950-15900
3CU 04036 0026 PCZZA
108
0A
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2. OVERVIEW
The ComTrac Radio is used as a telecommunication device within the context of
Communication Based Train Control (CBTC) System. The radio incorporates the 802.11
FHSS standard to provide radio-to-radio communication using the unlicensed 2.4GHz
spectrum in a mobile environment. It also provides fiber and LAN connectivity to pass
data traffic from wayside to on-board networks.
'
Urban Rail
Guideway
Wayside
Access Point
Client
Client
Wayside
Access Point
Radio
Radio
Radio Radio
Figure 1 Typical Radio Application
There are two styles of the radio; a standalone unit and a die-cast unit. The standalone
can be configured for all modes of operation. The die-cast is intended to be used as an
access point only.
The term ‘radio’ is interchangeable with ‘ComTrac Radio’, ‘access point’ (AP), or ‘mobile
radio’ (MR) within the context of this document.
Also, the term ‘client’ is interchangeable with mobile radio (MR), and the ‘Wayside Radio
Unit’ (WRU) is interchangeable with access point.