Cooran - Development Application

Further, the nbn™ Fixed Wireless network has been designed to service a known
number of simultaneous subscribers to any one facility, which ensures that the
wholesale service will be stable and reliable, and mitigates the kind of
fluctuations in speed experienced as a result of congestion on both ADSL
services and mobile wireless. People’s usage of the network will still vary, but
the set number of serviced premises in each area means that the bandwidth per
household is designed to be more consistent, even in peak times of use.


2.4 The    Fixed  Wireless                  Network         –     Transmission
    Interdependencies
Just as nbn™ Sky Muster™ customers access the nbn™ fibre network via a
satellite that transmits data back to ground stations connected to the fibre, so
too fixed wireless customers’ data must also find its’ way to the broader nbn™
fibre network. In essence, nbn™ fixed wireless customers access the nbn™
fibre via one or more radio links.

These radio links are known as the “transmission network”. They are critical to
the accessibility of the fixed wireless service, and form a crucial part of the
network design. Each fixed wireless facility is connected to another to form a
chain of facilities that link back to the nbn™ fibre network. Although fixed
wireless facilities are submitted to Council as standalone developments from a
planning perspective, they are highly interdependent.

The transmission network comprises “fibre HUB” facilities (facilities connected
to the fibre network and representing the critical anchor for fixed wireless
service delivery); “mini-HUB facilities” (facilities in the middle of a transmission
chain that are not connected to fibre but nevertheless have downstream
dependent facilities relying on transmission via the mini-HUB to reach the fibre
HUB); and “end site” facilities (those fixed wireless facilities at the end of the
transmission chain).

Fibre-HUB and mini-HUB facilities therefore perform two functions: they deliver
a local fixed wireless service to the immediately surrounding community, and
they act as a critical transmission link relaying data from neighbouring
downstream dependent facilities.

The quality and speed of the wholesale nbn™ fixed wireless service does not
differ between the front (fibre HUB) and the end (end terminal site) of the
transmission chain because nbn designs the fixed wireless network to limit the
number of transmission links necessary to connect customers, ensuring equity
in service across communities. Were nbn to design the network with longer,
multiple transmission links, communities at the end of the chain would
experience a compromised service.
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