Long term evolution
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Long Term Evolution
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Persyaratan Kunci 4G
• High data rate, low latency, packet-optimized radio access– 100 Mbps peak DL rate in 20 MHz allocation– 50 Mbps peak UL rate in 20 MHz allocation
• Spectrum flexibility– Scalable bandwidths [1.25, 2.5, 5, 10, 15, 20MHz]– Support for paired and unpaired spectrum assignments
• Support for high speed mobility (up to 350 km/h)• Flat backbone architecture (all IP)
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Teknologi Mana?
• Evolusi sistem berbasis CDMA (3GPP)
3GPP
3GPP2
WCDMA HSDPA HSUPA
CDMA1xEV-DORev 0
EV-DORev A
EV-DORev B
LTE
EV-DORev C
E v o l u t i o n a r y
E v o l u t i o n a r y
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Continued..
• Evolusi sistem berbasis OFDMA
Mobile WiMAX RevolutionMobile WiMAX
Mobile WiMAX
II
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Conventional FDM and OFDM
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Continued..
Spectral Efficiency
0.0
0.5
1.0
1.5
2.0
1:1 3:1 1:1 3:1
1xEVDO 3xEVDO HSDPA HSPA SIMO MIMO
Rev A Rev B Mobile WiMAX
bp
s/H
z
.
DL
UL
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Pengertian
• LTE didefinisikan dalam standar 3GPP (Third Generation Partnership Project) Release 8 dan juga merupakan evolusi teknologi 1xEV-DO sebagai bagian dari roadmap standar 3GPP2.
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Fasilitas LTE
• Teknologi ini dirancang untuk menyediakan :– efisiensi spektrum yang lebih baik– peningkatan kapasitas radio– latency dan biaya operasional yang rendah bagi
operator– layanan mobile broadband kualitas tinggi untuk
para penggunanya.
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Keunggulan LTE
• Teknologi LTE memungkinkan operator selular meng upgrade jaringan GSM, WCDMA atau ‐HSPA mereka yang sudah ada untuk menyediakan layanan Internet yang cepat dan low delay melalui mobile ‐ broadband. Solusi ini juga ideal menjadi langkah lanjut bagi operator CDMA untuk memperoleh kecepatan dan kapasitas lebih tinggi.
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Keunggulan LTE
• LTE menggunakan Orthogonal Frequency Division Multiplexing (OFDM) sebagai teknologi akses radionya, disamping teknologi antena terdepan
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Perkembangan Teknologi Seluler
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Continued…
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LTE’s Features
• Penggunaan air interface untuk meningkatkan bit rate
• Efesiensi Spectrum• Flexible radio planning• Reduced latency• all IP environment‐
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Perbandingan Arsitektur LTE dan Jaringan UMTS
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LTE vs WiMAX
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LTE vs WiMAX
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LTE Architecture
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Arsitektur LTE pada jaringan GSM
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Area Frekuensi LTE
• LTE dapat beroperasi pada standar IMT 2000 ‐(450, 850, 1800, 1900, 2100 MHz) maupun pada pita spektrum baru seperti 700 MHz dan 2,5 GHz. Alokasi pita lebar yang sangat fleksibel, mulai dari 1,4,3,5,10,15 hingga 20 MHz, menjanjikan fleksibilitas yang tinggi dalam penggunaan spektrum.