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Baso MaruddaniUniversitas Negeri Jakarta
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 11
Jaringan Nirkabel
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Sejarah Komunikasi Wireless (1)
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 12
Awal komunikasi radio— Awal 1800s: Michael Faraday, Joseph Henry, Hans Oersted
bereksperimen tentang aliran arus listrik pada satu kawat yang dapat menginduksi kawat lain
— 1864: James Maxwell berteori tentang osilasi dari arus listrik yang dapat menimbulkan medan EM. Medan EM ini berpropagasi dengan kecepatan cahaya. Cahaya tampak merupakan salah satu fenomena EM dan merupakan bagian dari spektrum EM
— 1873: Maxwall mempublikasikan persamaan Maxwell yang sangat findamental. 4 persamaan differensial yang mendeskripsikan perubahan ruang dan waktu pada medan EM
— 1888: Heinrich Hertz membangun transmitter dan receiver radio yg pertama untuk mengukur gelombang EM dan membuktikan teori Maxwell yang mengatakan bahwa gelombang EM bergerak dengan kecepatan cahaya
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Sejarah Komunikasi Wireless (2)
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 13
— 1895: Guglielmo Marconi membangun sistem wireless telegraph pertama
— 1901: Marconi mentransmisikan transatlantic wireless telegraph message pertama
— 1906: Reginald Fessenden pertama kali mentransmisikan suara melalui radio (from Boston to ships in Atlantic)
— 1918: Edwin Armstrong menemukan superheterodyne circuit untuk receiver radio yg stabil
— 1933: Armstrong menemukan frequency modulation (sebelumnya yang digunakan adalah amplitude modulation), lebih tahan terhadap nose dan interferensi
1934: US creates FCC (Federal Commun. Commission) to mengawasi telekomun ikasi di publik termasuk pengalokasian spektrum
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Sejarah Komunikasi Wireless (3)
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 14
1946: AT&T memperkenlkan layanan mobile telephone pertama dgn menggunakan transmisi radio FM, 120KHz per kanal voice dan terbatas hanya pada 50 mil dari base station serta menggunakan operator untuk men-dial— Pertengahan-1960s: AT&T’s IMTS (Improved Mobile Telephone
Service) menggunakan 30 kHz voice channels, narrowband FM and direct dialing (tanpa operator)
Generasi pertama telepon selular analog (First generation analog cellular telephony)— akhir1940s: AT&T membuat konsep selular untuk frequency reuse— 1971: AT&T mengajukan High Capacity Mobile Phone Service
kepada FCC— 1979: US menstandarkan hal itu sebagai AMPS (Advanced Mobile
Phone System) pada daerah 800-900 MHz
• 1983: AT&T me-launchAMPS di Chicago
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Sejarah Komunikasi Wireless (4)
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 15
— 1985: Nordic Mobile Telephone (NMT 450) di Scandanavia, Total Access Communications System (TACS) di UK, C450 di W. Germany
• Total : 6 incompatible analog cellular systems di Europe
• Motivated Europe to accelerate 2nd generation digital cellular
Generasi Kedua Selular Digital (Second generation digital cellular)— 1989: Europe membuat standar Global System for Mobile
Communications (GSM)
• 1992: GSM di-launching— 1990: Japan menstandarkan Japanese Digital Cellular (JDC) yang
sekarang disebut Personal Digital Cellular (PDC)— 1990: Europe menstandarkan Digital Cellular System at 1800 MHz
(DCS 1800, yang kemudian dinamakan GSM 1800)
• 1993: DCS 1800 di-launching
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Sejarah Komunikasi Wireless (5)
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 16
— 1992: TIA/IS-54 TDMA (Digital AMPS) dikembangkan diUS
— 1996: TIA/IS-95 CDMA di US
— 1995: Personal Handphone System (PHS) di Japan, first widespread low-tier PCS, is hugely successful
1996: AT&T and Sprint offer PCS in major US cities
— Smaller cell sites (0.25 km vs traditional 1-8 km), smaller/lighter portable handsets, cheaper access points
1998: ITU begins to study proposals for 3rd generation cellular
mid-2000s: UMTS, IMT-2000, W-CDMA, cdma2000, EDGE,...
2010-?: 4th generation?
— Self organizing, ad hoc?
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Badan Hukum Telekomunikasi
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 17
Di Indonesia : BRTIUntuk internasional : FCC (Federal
Communication Commision)
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Pentingnya Komunikasi Wireless
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 18
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Networks Today
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 19
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Perlunya Wireless
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 110
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Elemen Wireless Network (1)
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 111
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Elemen Wireless Network (2)
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 112
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Elemen Wireless Network (3)
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 113
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Elemen Wireless Network (4)
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 114
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Elemen Wireless Network (5)
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 115
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Wireless Link : Parameter
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 116
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Standar Wireless
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 117
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Selular vs Wi Fi
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 118
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Karakteristik Kanal Wireless
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 119
Sinyal yang ditransmisikan melalui gelombang radio akan mengalami fluktuasi akibat karakteristik medium yang selalu berubah
Selain itu terjadi penurunan daya sinyalKesulitan untuk melakukan proses
selanjutnya : demodulasi
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Karakteristik Kanal Wireless
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 120
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Karakteristik Kanal Wireless
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 121
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Karakteristik Kanal Wireless
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 122
Fluktuasi sinyal tersebut dapat dibagi 2:Large Scale Fading fading relatif tetap untuk
plot area yg besar - Refleksi- Difraksi- Scattering
Small Scale Fading (Multipath) fading berubah secara dramatis untuk plot area yg kecil- Time spreading signal- Time varying kanal
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Large Scale Fading
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 123
Refleksi : mengenai benda rata yg > λDifraksi : terhalang oleh permukaan tajam
gelombang semu muncul di belakang penghalang Shadowing
Scattering : mengenai benda yg < λMengatasi :
- Fading margin (secara defintif) adalah kenaikan daya pancar yang harus dilakukan agar penerimaan lebih/sama dengan level penerimaan minimum yang diijinkan- Diversitas- Antena sektoral dan smart antena
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Small Scale Fading
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 124
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Small Scale Fading
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 125
Time Varying : Fluktuasi amplitudo disebabkan superposisi konstruktif dan destruktif dari sinyal yang diterima
Time spreading : Perbedaan waktu kedatangan sinyal akibat perbedaan lintasan
Flat SlowFading
Flat FastFading
FrequencySelective
SlowFading
FrequencySelective
FastFading
TSym
TSymT0
m
Perioda simbolP
erio
da s
imbo
l
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Contoh :
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 126
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Teknologi Komunikasi Wireless
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 127
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Teknologi Komunikasi Wireless
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 128
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Teknologi Komunikasi Wireless
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 129
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PAN
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 130
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PAN - Bluetooth
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 131
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Bluetooth Protocol Stack
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 132
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Wireless LAN : IEEE802.11
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 133
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Infrastuktur Dasar Wireless LAN
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 134
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Arsitektur Dasar IEEE 802.11
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 135
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Wireless WAN
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 136
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Teknik Multiple-Akses Radio
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 137
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1G - FDMA
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 138
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2G - TDMA
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 139
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2G dan 3G - CDMA
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 140
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CDMA
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 141
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CDMA
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 142
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CDMA
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 143
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1st Generation – 1G
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 144
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1st Generation – 1G
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 145
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2nd Generation – 2G
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 146
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D-AMPS / TDMA / PDC
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 147
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iDEN
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 148
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DECT dan PHS
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 149
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CDMAone – North America CDMA
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 150
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CDMAone – North America CDMA (IS-95)
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 151
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GSM
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 152
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GPRS(1)
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 153
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GPRS (2)
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 154
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Visi 3G
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 155
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International Standard
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 156
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Visi IMT 2000
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 157
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Standar Radio IMT 2000
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 158
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CDMA2000
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 159
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WCDMA (UMTS)
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 160
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TD- SCDMA
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 161
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Migrasi ke 3G
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 162
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Spektrum Wireless Mobile
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 163
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Perkembangan ArsitekturJaringan Selular
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 164
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Arsitektur 3G – Secara Umum
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 165
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Jaringan GSM
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 166
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Signalling pada Core Network
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 167
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Panggilan dari PSTN – Jaringan Mobile
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 168
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Arsitektur GSM 2G
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 169
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Perkembangan GSM
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 170
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Vocoder : AMR dan SMV
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 171
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Perkembangan GSM
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 172
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GPRS – 2.5G untuk GSM
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 173
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2.5G/3G (Add IP Data w/out perubahan pada voice)
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 174
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Arsitektur 2.5G
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 175
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Evolusi GSM untuk Data Access
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 176
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EDGE
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 177
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3G Partnership Project
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 178
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Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 179
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Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 180
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Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 181
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Sasaran 3GPP Rel 6
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 182
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Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 183
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Wireless LAN
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 184
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Topics of DiscussionMaking the Decision to go WirelessWireless StandardsWireless Router and Adapter BrandsFire WallsWireless SecurityRouter SetupWireless Adapter Setup
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Making the Decision to go WirelessWhy have a network at home?To share files between computersTo share printersTo share an Internet connection
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Making the Decision to go WirelessTypes of Networks used in a Home
Hard Wired
Wireless
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Types of Networks used in a HomeHard Wired
Is the most secureFaster than wireless
Technology is increasing wireless though put speeds Increased cost
Cable and connections (electrician)May have to cut through walls and floors
Can be mitigated using cable raceways on wall surfaces
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Types of Networks used in a HomeWireless
Does not require cable to be runEasy to installEasier to add equipment Equipment is more expensiveYou may need to plan for problems
Will be covered in Planning for Your Wireless Router
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Router/SwitchDevices are connected together on a network
using a router / switchRouter part connects two nodes together
Local-area network (LAN)Wide-area network (WAN)
Switch parts connects devices on LAN togetherRouterHard wired devices Access point on a wireless router
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Special Planning for Wireless Access Cordless telephonesMicrowaves Type of construction of your home
Brick Wood Metal
Outside interferenceRadio or microwave transmission
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Wireless Standards802.11a
Speed 54MbsFrequency used is 5 gigahertz (Ghz).
802.11bSpeed 11MbsFrequency used is 2.4 gigahertz (Ghz).
802.11gSpeed 54MbsFrequency used is 2.4 gigahertz (Ghz).
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Wireless Standards
New and Future TechnologyMultiple-Input Multiple-Output (MIMO)
Allows present technology to achieve greater throughput with the present standards,
In the future 802.11n may be the new standard for wireless local-area networks Throughput may reach 540 Mbs 10 times faster than 802.11a or 802.11g A better operating distance May include MIMO technology
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Wireless Standards802.11a
Speed 54MbsFrequency used is 5 gigahertz (Ghz).
802.11bSpeed 11MbsFrequency used is 2.4 gigahertz (Ghz).
802.11gSpeed 54MbsFrequency used is 2.4 gigahertz (Ghz).
802.11nSpeed 200Mbs (Typ), 540Mps (max)Frequency used is 2.4 gigahertz (Ghz).Range indoors is 50m
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Komponen Wireless Network
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 195
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Komponen Wireless Network
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 196
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Wireless Standards
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 197
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Access Point
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 198
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Access Point
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 199
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Access Point
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 1100
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Access Point
Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 1101
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Wireless Router FeaturesContain a wireless access point
Allows wireless devices to connectMay use MIMO technology
Increases throughputContain a hardware firewall
Stops inbound data unless you request itHave setup for Wireless security
Keeps strangers from accessing LAN through the wireless access point
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Some Wireless Router and
Wireless Adapter BrandsLinksys D-Link US Robotics AirLink BelkinNetgear
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Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 1104
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Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 1105
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Bahan Ajar D3 - Teknik Jaringan Komputer - Pertemuan 1106
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FirewallsYou should have a fire wall on all your
computers that have access to the internet
Two types of fire walls Hardware fire wall
Used to stop incoming data that is not requested by your computer
Software firewalls Zone Alarm is used to keep your computer from
sending or receiving information without your permission.
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Wireless security In the Router:Change the default Service Set Identifier
(SSID) Disable the SSID broadcast Change the User Name and Passwords on
the wireless router Set up the wireless encryption Setup the MAC Filter Change the routers local IP address
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Wireless Security – Encryption Types
Wired Equivalent Privacy ( WEP ) The oldest encryption method Uses a 64-bit or more secure 128 bit key
Wi-Fi Protected Access ( WPA ) Newer encryption method that uses 256-bit
keyWi-Fi Protected Access 2 ( WPA2 )
Newest encryption method Backward compatible with WPA
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Setting up your Wireless RouterThings you need to know
Who is your ISP What type of Internet connection are you usingUser name and password if required
Brand of routerDefault local IP addressDefault User NameDefault Password
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Sample default Local IP Address,
User Name, and Password
Brand Local IP Address
User Name Password
Linksys 192.168.1.1 admin
Belkin 192.168.2.1
D-Link 192.168.0.1 admin
USRobotics 192.168.2.1 Must set up Must set up
Netgear 192.168.0.1 admin password
Air Link 192.168.1.1 admin admin
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Demonstration on setting up wireless router
Use setup CD that came with routerIf you already have a router installed you
should remove it first. The installation software will try to determine the type of connection
OrBring up browser and access router
Inter routers local IP address in the URLInter the default User Name and PasswordSetup router
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Setting up the wireless adapter
in the remote PC You must know the SSID and
encryption KEY for the network you wish to connect. We entered these in the router.
Types of wireless networks Infrastructure Ad-Hoc
For this demonstration we will be using an Infrastructure network
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Description of the networks for your information
Infrastructure network Wireless network centered about an access pointAccess point
Provides communication with the wired networkMediates wireless network traffic in the immediate
neighborhood
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Topologi Wireless LAN• Infrastruktur atau Basic Service Set (BSS) a)
b)
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Description of the networks for your information
Ad-Hoc Are point-to-point networks
May consist of two or more mobile computers A collection of computers which propagate the signals. (A to
B to C to A). May be simple point to point
Hey, how’s it hanging?Hello,
hello, is anyone there?
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Topologi Wireless LAN Ad-hoc atau Independent Basic Service Set (IBSS)
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Description of the networks for your information
Ad-Hoc May be a more complex system with multiple entities
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The type of wireless adapters Will depend on your wireless PC
For a desktop PCI adapter USB adapter
For the laptop PC card ( PCMCIA card) USB adapter
Use an adapter that matches your router to get maximum throughput
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Installing the wireless adapter Use the installation instructions that come
with your wireless adapterUsing the correct sequence
Install hardwareUse CD that comes with the hardware
Install the driver Install the software (utility program)
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Connecting the wireless computer to the access pointHave the remote computer scan for
networks Find SSID of your network and select it
enter the encryption key that was used to set up the wireless part of the router
Confirm key if necessaryClick on connect
You should be connected to the network
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Finalize Wireless Security as neededDisable the SSID broadcast if wantedChange the User Name and Passwords on
the wireless router Setup MAC Filter Change the routers local IP address
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Additional informationAcronyms
AES Advanced Encryption Standard DSL Digital Subscriber Line. Usually through your
telephone company DHCP Dynamic Host Configuration Protocol HTTP "HyperText Transfer Protocol” This is the protocol used to
format and transfer data over the internet. When you enter a URL in your browser, this actually sends an HTTP command to the Web server directing it to fetch and transmit the requested Web page..
IPSEC IP Security ISP internet service provider LAN local-area network L2TP Layer Two (2) Tunneling Protocol. Used with virtual
private network MANET mobile ad-hoc network MIMO multiple-input multiple-output Mbs million bits per second
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Additional informationAcronyms
PCMCIA Short for Personal Computer Memory Card International Association. PC card.
PING Packet Internet Groper, A utility to determine whether a specific IP address is accessible
PPPoE Point-to-Point Protocol over Ethernet PPTP Point-to-Point Tunneling Protocol. Used with virtual
private network SSID Service Set Identifier TKIP Temporal Key Integrity Protocol. Used with virtual
private network USB Universal Serial Bus URL An Internet address (example,
http://www.google.com or 64.233.187.99 are the sane location)
VPN virtual private network WAN wide-area network WEP Wired Equivalent Privacy