BasicInternet:Technology
From its-wiki.no
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Contents
Documentation of the Technology used by Basic Internet
- based on MikroTik equipment
Satellite provision
We have two basic forms for distribution of the Basic Internet
- i) Satellite Modem includes Router Board
- e) Satellite Modem has an exteral Router Board
The Router Boards are preconfigured with an IP address, and thus only need to be connected to the satellite to be connected automatically to the billing centre at Kjeller.
Si1 configuration
The Si1 configuration includes
- a satellite dish (1.2 or 1.8 m diameter)
- a satellite modem including the router board, e.g. RouterBOARD 951Ui-2HnD
- a wifi unit, transmitting the 2.4 GHz, e.g.
The receive antenna can typically be set up on the ground, at a wall or whatever other place is suitable.
Si5 configuration
The Si5 configuration includes
- a satellite dish
- a satellite modem including the router board, e.g. xxx
- a distribution network, consisting of directional links from a main antenna to smaller antennas at the customer site. The link is typically operating at 5 GHz, e.g. SXT Sixpack
- a wifi unit, transmitting the 2.4 GHz, e.g. xxx
In the Si5 configuration we need to ensure free sight (no obstacles, no trees) between the main distribution antenna and the antennas at the customer site. This might require mounting the 5 GHz distribution networks on poles. Typical maximum ranges are 5-8 km for each of the distribution links.
Si20 configuration
same as Si20, but with 4 x 90 deg antennas for distribution to a total of 20 or more customer receive stations covering the whole area. The kit is SXT Sixpack- WISP Starter Kit, cost $445
Notes
- need to identify the satellite modem with integrated Router OS
- functionality of Router Board 4 SHPn
Power consumption of the Satellite Installations
Power consumption of Configuration | Si1 [W] | Si5 [W] | Si20 [W] |
---|---|---|---|
Satellite modem (1 Mbit/s link) | |||
5GHz distribution network | |||
Customer equipment | |||
Total: |
Radio-link
The radio link configuration is similar to the satellite configuration, where the satellite link is replaced by a radio link.
Configuration R1...20
The configurations R1...20 can make use of whatever carrier providing the access to our feeding network, being it an 802.16d WiMAX link, a 5GHz Wifi link or a 24 Ghz directive link.
Mobile Networks
We intend to use the BRCK - your backup generator for the internet, founded by Ushahidi as part of the Internet for Africa initiative.
The BRCK comes with a backup battery, and has a range of options to adopt to the application areas:
- an external omnidirectional antenna for better reception
- a solar panel for operating in areas without power
Evolution from current networks
Assume that you have an existing AAA,