ubiquiti – Better Internet for Rural, Regional & Remote Australia (BIRRR)

Sharing Internet Connections with a Wireless Bridge
by Jacob Johnson

This document shows three different examples of how an enterprising BIRRR member has helped himself and others share internet connections via a WIFI link.

I have a fixed wireless connection and share to my neighbour who had a failed install 300m away through some thick trees. I also set up the same system between another two neighbours in the same situation. My speeds are slightly affected but only because we are sharing a single connection. We did this because it was cheaper that way. My neighbours don’t download anything just watch Netflix occassionally. The nbn NTD can support up to 75mbit so it is not a problem if both properties are on the 25/5 plans but you may experience slightly slower speeds if both were on a 50/20 plan downloading full speed.

A 300m 2.4Ghz WIFI link – nbn FIXED WIRELESS

jj1 — A newly installed nbn™ Fixed Wireless ODU with a Ubiquiti Nanostation attached to the Fixed Wireless mast.

MY HOUSE: This was originally a temporary mount for the Nanostation, but it appears to work perfectly with no interference; so it may stay! It is directed to the ‘clothes line’ Ubiquiti Nanostation shown below.

The picture above shows a newly installed nbn™ Fixed Wireless ODU and a Ubiquiti Nanostation attached to the Fixed Wireless mast. The Ubiquiti nanostation is used to transmit the Fixed Wireless connection over WIFI from this location

The Nanostation WIFI link connects to the ‘clothes line’ Ubiquiti Nanostation shown below.

jj4 — The clothes line Ubiquiti is connected via Ubiquiti tough cable running through a conduit to home.

NEIGHBOUR 1:

The clothes line Ubiquiti is connected via Ubiquiti tough LAN cable via underground conduit, to the home. The home roof was not suitable for the WIFI link as it had too many trees in the signal path and the clothes line was a cheap pole on which to mount the Nanostation.

The 2.4Ghz link is ~ 300m and the wireless receive signal level is 63dbm. That is an excellent result.

2. A 350m 2.4Ghz WIFI link – nbn FIXED WIRELESS

NEIGHBOURS 2 & 3:

The next two photos show a link which shares fixed wireless between two of my neighbours. It passes through a grove of trees, but the signal is perfect. The house roof ones aren’t solar powered, a cat5 cable runs down into the house, into the poe port of the Ubiquiti power injector.

jj2 — The 2.4Ghz link distance is ~ 350m and the receive signal level is 65dbm.

An excellent result.

3. A solar powered 3G Installation and 2.5Km 5Ghz WIFI link – MOBILE BROADBAND

This WIFI link delivers internet from a solar powered 3G modem and router installed on an elevated ridge. Internet is beamed down to a site that has no mobile reception via a WIFI link.

The 5Ghz link is ~ 2.5km and the receive level is 60dbm.

Prepared for BIRRR by Jacob Johnson & John Kitchener

Using a WIFI Bridge to achieve a nbn™ Fixed Wireless connection

The following diagrams show typical methodologies for connecting a remote nbn™ fixed wireless installation via a WIFI link.
The link is best constructed using semi-commercial specialist WIFI routers such as those made by Ubiquiti or MicroTik; or similar. This equipment is inexpensive and relatively straightforward to configure. You may also be able to purchase the equipment pre-configured, depending on the application. City Technology is a good place to compare Ubiquiti product pricing.
For links around 2 to 3Kms, an equipment cost of around $100 per site is likely. Installation and cabling is additional. Reliable links of up to 20Km may be economically realised. If the WIFI link is well designed and constructed it will provide speeds in excess of 100Mbps; which is more than fast enough for a 50/20Mbps nbn wireless connection.
OPTION 1: This arrangement shows an nbn™ fixed wireless service installed in a shed or location where no internet is required at that location (eg Premise 1 in the diagram below). The nbn™ service is extended via a WIFI bridge to the home (eg Premise 2 in the Diagram below) and a WIFI router is added to extend LAN services and broadcast WIFI around the home. The WIFI link acts exactly like a long, long length of LAN cable. For more in depth details read the stories on our Stories & Testimonials Page

wfb — This arrangement is typical for a remote nbn™ installation in an area on your property, where signal is good.

OPTION 2: The second arrangement shows an nbn™ fixed wireless service installed in Premise 1 with internet available. This internet service is extended via a WIFI bridge to another premise, Premise 2. Both premises share a single nbn™ wireless service. Depending on configuration of the routers the premises may or may not share the same network. You may also configure the router to ensure that one household doesn’t swamp the others access ie each household is restricted to half the capacity of the FW link.

wfb2 — This configuration is most likely suitable for families living in separate homes on the same property, where the cost of the internet service is shared.

OPTION 3: This arrangement shows an nbn™ fixed wireless service installed in Premise 1 with internet available. A second nbn™ fixed wireless service is installed on the same nbn wireless NTU using the same or a different RSP (ISP/Provider). This second service is extended via a WIFI bridge to Premise 2. This second service is independent of the service at Premise 1 and is likely, separately billed.

wfb3 — This arrangement is most likely if you negotiate to use your neighbour’s nbn™ connection.

There are two W-NTD versions. The V1 ODU has an antenna gain of 23dBi and a throughput capacity 60Mb/s. The V2 ODU has an antenna gain of 26dBi and a throughput capacity of 75Mb/s i.e. across one or all four ports.

An nbn™ fixed wireless service is available with speeds of 12/1, 25/5 and 50/20 (up to). This implies that if both customers were to activate a 50/20 service then there would be times when the service speed is restricted (by the 60-75Mbps total cap), if they are both heavy users.

Sharing between ports is graceful, as they are different vlans ie if you had port 1 and 2 activated with 50/20 plans, the throughput sharing would be 50:50.

OPTION 4: A fourth situation may exist where a single property has two residences, each with an independent fixed wireless standard installation. nbn™ will install a fixed wireless service at each residence

There will be other variations of these four themes.

Please note, while all care has been taken in compiling BIRRR documents, we recommend that you check with nbn™ or your ISP regarding your own connection issues. Thanks to John Kitchener, BIRRR member for compiling this document.