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Wireless technology for Research and Educational

Communities in Azerbaijan

September, 2002

Dr. Elchin R. Aliyev

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Technological networking components Technological networking components

1. Satellite or fiber-optic link to the world Internet-space;

2. Backbone inland (fiber-optic, radio-relay and combined);

3. Providing of “last mile”;

4. Content inland.

Let’s view in detail the 3rd segment of networking – providing of “last mile”.

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Topology of AzRENA Education Network DesignTopology of AzRENA Education Network Design

A scheme of education network design by means of radio-relay links and wireless equipment Ethernet Bridge (IEEE 802.11) as “last mile” problem solving.

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Use of radio-frequency spectrumUse of radio-frequency spectrum

For radio signal transmission a radio-frequency spectrum ISM 2.4-2.483 GHz is used, a maximum data rate is 11 Mbps. Since January of 1997 use of radio-frequency spectrum 5GHz has been permitted. Two segments (5,15-5,35 GHz and 5,725-5,825 GHz) with a general bandwidth 300 MHz are extracted in this spectrum. A maximum data rate during use of the spectrum 5 GHz is 54 Mbps.

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Advantages of wireless Advantages of wireless communicationcommunication for “last mile” problem solving for “last mile” problem solving

Fast development (installation, assembly);

Flexible adaptation to bandwidth requirements (a rate in radio link is up to 11 Mbps);

Use of usual network interfaces and protocols: Ethernet InterfaceIEEE 802.11 Standard

All the network applications are installed and operate without adaptation;

A fixed workload of communication line (traffic count).

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Shortcomings of wireless communication for “last mile” problem solvingShortcomings of wireless communication for “last mile” problem solving

Considerable investments for wireless communication development for providing of a direct visibility;

Receipt of authorization for reserving a radio- frequency spectrum;

Condition of direct visibility;

Low security of data transmission;

Radio frequency interference of every sort and kind.

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Support of wireless communicationSupport of wireless communication

Wireless network equipment ORINOCO of Lucent Technologies

Software TurboCell of KarlNet (USA) ($200, $400)

The best known and popular producers at WaveLAN market are the following companies: Lucent (ORINOCO series) and Cisco (Aironet series).

For support of wireless communication we use:

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РС-card is a valid network adapter equipped with two built-in antennas and a socket for connection of an external antenna. $105 ($65 PCI)

LucentLucent ORINOCO ProductsORINOCO Products

The multipurpose access point Avaya Access Point II is a portable specialized industrial computer equipped with two slots of РС-card type. $730

The device Avaya Wireless RG operates as a central base station for several mobile users. $800

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Use of wireless technologiesUse of wireless technologies

Project on enhancement of AzRENA infrastructure (NATO Grant No. NIG976370) and connection of the Association’s regional members to a backbone network;

UNDP Project “Enhancement of Data Exchange via Internet for scientific and research institutions of Azerbaijan Republic”.

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Network structure of AZRENANetwork structure of AZRENA

Internet connection is realized in asynchronous mode through 2 points: Economic University and National Academy of Sciences.

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Regional Infrustructure of AzRENARegional Infrustructure of AzRENA

A scheme of education network design by means of radio-relay links and wireless equipment Ethernet Bridge (IEEE 802.11) as “last mile” problem solving. The fiber-optic could be used as a backbone too.

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AZRENA for Science and EducationAZRENA for Science and Education

AzRENA network has the channel 1,5 Mbps and links 15 educational and scientific centres.

The number of workstations connected to Internet through AzRENA is over 900 and at present time these workstations maintain 6000 users.

AzRENA has intra republic BACKBONE:

Baku-Mingechevir-Gandzha-Akhstafa–1Mbps Baku-Lenkeran-Astara – 1 Mbps

AzRENA has the education centers in 12 regions of the republic.

In future planning installation of two exchange points between two networks AzRENA and AzNET in Baku and region, which allow improving networks, optimizing traffic and creating common technical Academic Educational Network in Azerbaijan.

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Wireless technology for Research and Educational

Communities in Azerbaijan

Thanks for attention!