NBN Co Network Design Rules

NBN Co Network Design Rules
1.1.15.2. RF Spectrum and Orbital Slots
NBN Co will use the Ka-band radio spectrum through a combination of using class licensed bands as
well as privately negotiated spectrum licenses with current license holders.
Description
RFGW to Satellite Uplink
Satellite to VSAT Downlink
VSAT to Satellite Uplink
Satellite to RFGW Downlink
RF Auto Tracking Downlink
Uplink Power Control
Frequency Range
27.0 – 28.5 GHz
17.7 ‐18.2 GHz, 18.8 ‐19.3 GHz and
19.7 ‐ 20.2 GHz
28.5 – 29.1 GHz
18.2‐ 18.8 GHz
29.5 – 29.54 GHz
19.3 – 19.35 GHz
Table 7 Preliminary RF Spectrum Plan
The NBN Co satellites are designed to operate at the orbital slots of 140 deg E and 145 deg E. NBN
Co is currently going through the ITU domestic and international orbital slot coordination process.
1.1.16. RF Sub-System
In each RF Gateway, the RF Sub-System transmits and receives RF signals with the satellites, and
connects to the VSAT baseband Sub-system. The RF Sub-system comprises of the following major
components;
13.5m earth to satellite antennae on controllable mounting platforms
RF amplification, filtering, conditioning and receiving equipment operating at Ka-band.
Power Supplies
Monitoring and Control systems.
1.1.17. VSAT Baseband Sub-System
The VSAT baseband system located in the RFGWs and is the termination system for VSAT traffic and
management signals. It is composed of the following components;
Modulation and Demodulation equipment
Air Resource Management equipment
Traffic forwarding equipment
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