4g technology
DESCRIPTION
An introduction to the 4th generation of mobile phone mobile communications standard and comparison with previous standards. Prepared for Computer Network & Database Administration course. Presented at Multimedia University, Malaysia by Ali Mohammad Hossein Zadeh, 2011.TRANSCRIPT
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4G TechnologyAli Mohammad Hossein Zadeh (1101600641)FCM – April 2011
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2Overview
1. 0G
2. 1G
3. Cellular Telephone System
4. 2G
5. TMDA and CMDA
6. 2G Evolution
7. 3G
9. 4G Requirements by ITU
10. 3G vs. 4G
11. 4G discontinued candidate systems
12. Clear 4G?13. P1 4G?14. What we have now?15. 4G candidates16. 4G in Malaysia17. Key Technologies for 4G18. OFDMA19. MIMO20. How WIMAX is better21. How LTE is better22. References
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30G or Mobile Radio Telephone
Predecessors of cellular telephones
Based on radio frequencies
Transmitter-Receiver (transceiver) with Antenna
Technologies: PTT, MTS, IMTS, AMTS
Mounted in Cars, Trains, Ships
Different power based on platform
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41G
Cellular Telephone System
Analog, Voice Only, Digital signaling
First lunched in Japan by NTT, 1979
Voice modulated to higher frequency 150 MHz and up
1st international roaming
Different technologies in different countries: NMT, Hicap, Mobitex, DataTAC
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5Cellular Telephone System
Mobile Telephone
Switching OfficeBase Transceiver
StationPublic Switched
Telephone Network
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62G
1st lunched in Finland by Radiolinja, 1991
Conversations encrypted digitally, SMS, E-Mail
Digital Signals > Compressing > Increase system capacity
Less radio Power > Smaller Devices
Technologies: Time division multiple access (TDMA), Code division multiple access (CDMA)
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7TDMA and CDMA
TDMA
CDMA
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82G Evolution
2.5G– General Packet Radio Service (GPRS)
• Standardized by ETSI• Data rates from 56 kbit/s up to 115 kbit/s• Wireless Application Protocol (WAP)• Multimedia Messaging Service (MMS)• Internet communication services• Sending SMS faster
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92G Evolution
2.75G– Enhanced Data rates for GSM
Evolution (EDGE)• Standardized by 3GPP• higher-order PSK/8 phase shift keying• Incremental Redundancy• Data rates up to 236.8 kbit/s
– Evolved EDGE• Bit rates are increased up to 1 MBit/s peak
bandwidth• Latencies down to 80• Signal quality is improved
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103G
1st lunched in Japan by NTT, 2001
Data rate of 2 Mbit/s for stationary users and 384 kbit/s in a moving vehicle
Security
Wide-area wireless voice telephone
Video calls
Mobile TV
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113G vs. 4G
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124G Requirements by ITU
100 Mbit/s moving users and 1 Gbit/s stationary users
IP packet-switched network
More users per cell
Smooth handovers across heterogeneous networks
Offer high quality of service for next generation multimedia
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13Clear 4G?
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14P1 4G?
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15What we have now?
LTE– Long Term Evolution– A project by the 3rd Generation Partnership
Project (3GPP)
WiMax– Worldwide Interoperability for Microwave
Access– A project by the Institute of Electrical and
Electronics Engineers (IEEE)
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164G discontinued candidate systems
3GPP Long Term Evolution (LTE)
Mobile WiMAX (IEEE 802.16e)
UMB (formerly EV-DO Rev. C)
Flash-OFDM
iBurst and MBWA (IEEE 802.20)
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174G Candidates
In 2009 these technologies submitted to ITU as 4G candidates:
LTE Advanced– Not a new technology– Will be ready in 2012– Standardized by 3GPP
IEEE 802.16m or WirelessMAN-Advanced– Under development– Standardized by IEEE
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18Key Technologies for 4G
Orthogonal frequency-division multiple access (OFDMA)
multiple-input and multiple-output (MIMO)
Both are use in LTE Advanced and WirelessMAN-Advanced
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19OFDMA
OFDMA can also be described as a combination of frequency domain and time domain multiple access, where the resources are partitioned in the time-frequency space, and slots are assigned along the OFDM symbol index as well as OFDM sub-carrier index.
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20MIMO
The technology where there are multiple antennas at the base station and multiple antennas at the mobile device.
Multiple antennas at both the base station and terminal can significantly increase data rates with sufficient multipath
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214G in Malaysia
19th November,2010, Yes4G WiMAX luched by YTLC– 5X faster then 3G (note 3g is only 384kbps)
5th of April,2011, P1 , world’s first WIMAX-Long Term Evolution Time Division Duplex (LTE TDD)– On the peak downlink throughput in a cell, the
demo reached an impressive 130Mbps on a 20MHz band.
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22How WIMAX is better
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23How LTE is better
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24Summary
Generation Definition Speed Real Speed Technology
1 Analog - - AMPS,NMT,...
2 Digital (Narrow Band Circuit Data)
9.6–14.4 kbps - TDMA-CDMA- GSM
2.5 Packet Data 171 kbps 20-40 kbps GPRS
3 Digital Broadband Packet Data
3.1 Mbps 500-700 kbps
CDMA2000-EDGE-UMTS
3.5 3.6 Mbps 1-3 Mbps HSPA
4 Digital Broadband Packet DataAll IP
100-300 Mbps 3-5 Mbps LTE Advanced- WiMaxMan Advanced
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25References
Nishat Kabir, Rhituparna Paul, Tahnia Farheen (2008). 4G Mobile Architecture. Retrieved from http://salmandk.weebly.com/uploads/1/9/5/2/1952819/ug_thesis_on_4g_mobile_architechture.pdf
Allen H. Kupetz, K. Terrell Brown (2003). 4G - A Look Into the Future of Wireless Communications. Rollins Business Journal.
http://en.wikipedia.org/wiki/Mobile_radio_telephone
http://en.wikipedia.org/wiki/1G
http://en.wikipedia.org/wiki/2G
http://en.wikipedia.org/wiki/3G
http://en.wikipedia.org/wiki/4G
http://www.youtube.com/watch?v=ESxAajD_nM0&feature=related
http://www.lteportal.com/
http://www.mybroadbandnews.com/
http://www.gsmworld.com/
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Thank You
تشکر
谢谢
Dankشکرا
Terima kasih
ありがとう
Gracias
Grazie
ขอขอบคุ�ณ
Спасибо
고마워 धन्यवा�द