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Senin, 04 Agustus 2008

Perbandingan Protocol Wireless LAN

IEEE 802.11 membagi standard utama menjadi tiga sub-standar, yaknik ; 802.11a, 802.11b, dan 802.11g. Berdasarkan table yang ada kita membuat perbandingan dan persamaan antara standard tersebut dan Bluetooth. Bluetooth juga merupakan salah satu alternative teknologi jaringan wireless.

Standar dari 802.11a dan 802.11b dikembangkan pada waktu yang sama, tetapi 802.11b lebih berkembang dan popular untuk membangun jaringan kecil karena perangkat keras bisa didapatkan dengan harga yang lebih murah. Dan didalam perkembangan kedepannya peralatan yang tersedia untuk dibeli dipasaran cocok dengan dua model (802.11 a/b).

Bluetooth hanya support pada range jarak yang pendek ( kira-kira 10 meter) dan bandwidth yang relative rendah (1 Mbps). In practice, Jaringan Bluetooth menggunakan PDA dan Handphone dengan PC tidak bisa digunakan pada jaringan LAN yang luas. Harga yang murah dari Bluetooth membuatnya salah satu solusi untuk perangkat wireless seperti PDA dan Handphone. Catatan standard 801.11 dan Bluetooth tidak compatible dengan yang lain.

802.11 Wireless LAN Standards Comparison


802.11a

802.11b

802.11g

Bluetooth

Data Rate (Mbps)

54

11

54

721Kbps
56Kbps

Operating Frequency (GHz)

5

2.4

2.4

2.4

Typical power output (mw)

40-800

100

100

100

Compatibility

Not compatible with 802.11b or 802.11g

Not compatible with 802.11a or 802.11g

Compatible with 802.11b

Not compatible with 802.11a/b.

Range

150feet

150feet

150feet

30feet

Interference risk

Low

High

High

High

Price

Expensive

Cheap

Moderate

Moderate

Hot-spot access

Poor

Good

Good

Poor

1 feet / ft / kaki = 12 inch = 0,3048 m

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