Wireless Network-1 lecture-02 6th semester 2021/1400

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Wireless Network-1 lecture-02 6 th semester 2021/1400

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History of wireless network Wireless network standards

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Wireless network Short history

At first the history of wireless return in 1800. Radio wave by Heinrich Rudolf Hers in Hamburg(1888 ). Radio wave in 1894 usage for communication. Marchese Guglielmo Marconi expand the microwave in 2 miles. Microwave develop in second war world in America. In 1972 a group of researcher create a WLAN.

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wireless network standards

Infrared, Bluetooth, IEEE, Wi-Fi, Wi-Max…are the most important kinds of network. They have in every where very important. The levels of wireless are very unknown.

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At first the intuition of infrared is Issaq Newton and William Hershel. Hershel was the first person which discover the infrared in 1800. Infrared distance is very least this was the first deficiency which that become rare.

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The name of Bluetooth taken from king of Denmark which he live in 10 th age. That can send the data in 10 meters. It was created by Erikson company in 1994 and that use by Erikson, Nokia , Intel and Toshiba in 1998.

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The Benefits of Bluetooth

Cost is low The low electrical point It use from Battery device That is very easy and simple.

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IEEE (Institute of Electrical and Electronics Engineers)

IEEE is professional world-wide society for electronics and electrical engineers. This technology expand in every kinds of networks.

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IEEE Standard 802.11

That release in 1990 by IEEE institute. Speed=1mbps, 2mbps. The Chanel frequency is 2.4GHz.

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IEEE Standard 802.11a

The cost of this standard is up than IEEE 802.11 Speed=54mbps The Chanel frequency is 5GHz

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IEEE Standard 802.11b

Speed=11-22 mbps The Chanel frequency is 2.4 GHz This standard can’t to relation to next standard because they don’t have compatibility.

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IEEE Standard 802.11g

Speed=54 mbps This standard can work in 100 meters. This standard is compound of two next standards. This standard is compatible with tow kinds of next.

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IEEE Standard 802.11n

The newest version of IEEE is 802.11n speed= up to 100mbps It can work with 2.4 and 5 GHz It can send and receive data in 540mbps and can work 250 meters.

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Wi-Fi Standard

It is one kinds of IEEE standard and record to IEEE 802.11x It is Wireless fidelity It is easy to Installation It can work 100 feet.

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Wi-Max Standard

It is taken from ( World Wide Interoperability for Microwave Access ) This technology can connect larges of network It’s the same of Wi-Fi but it is very powerful than that. T1/E1 or DSL is one kinds of that.

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Wi-Max Standard…

It standard to IEEE 802.16 Frequency = 10.66GHz Than in 2004 become 2-11 GHz

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The parts of Wi-Max

Wi-max Tower: which that setup in block of apartment and it send data to 30000 miles, nearly (8000 KM 2 ). Wi-max Receiver: it is include given microwave.

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Reference books

Introduction to Wireless network and mobile systems Wireless n networking technology, S teve Rackley.

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Phone, WhatsApp: 0093772730147 0093744603483 Email: S_anwer.matin@yahoo.com Facebook: www.facebook.com/ سیدانور متین

Phone, WhatsApp: 0093772730147 0093744603483 Email: S_anwer.matin@yahoo.com Facebook: www.facebook.com/ سیدانور متین

Instructor contact