A Study of Next Generation of Mobile Telecommunication

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A Study of Next Generation of Mobile
Telecommunication

• Name Lee, Jungwon
• Prof. Dr. Chang
• CS898t Mobile Communication

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Content

• History of Mobile Communication
• 2G Mobile (Comparison Between CDMA GSM)
• 3th Generation Mobile Standards
• 4G Mobile
• 4G Vision and Scope

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History of Mobile Communication
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2G of Mobile Communication

• GSM (Global System for Mobile Communication)
• Groupe Spécial Mobile (GSM) to study and develop
  a panEuropean public land mobile system
• Deployed in mid 1991 in Europe
• IS-95 (CDMA)
• Idea from military Developed by Qualcomm
• Using CDMA (Code Division Multiple Access)
• One Frequency all the time

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Comparison Between CDMA GSM
Comparison between CDMA and GSM Standard Fig. 1
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3G Mobile Communication (WCDMA CDMA2000)

• Promise of 3G
• Subscriber can access WWW (World Wide Web)
• High speed data transfer 133Kbps(high
  mobility), 384Kbps(restrict mobility),
  2Mbps(indoor)
• Messaging email, fax, etc.
• Medium-rate multimedia Internet access,
  educational
• High-rate multimedia file transfer, video
• High-rate interactive multimedia video
  teleconferencing, telemedicine, etc.
• Mobility quasi-stationary to high-speed
  platforms
• Global roaming ubiquitous, seamless coverage
• Evolution from second generation systems

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Overview of WCDMA

• WCDMA (Wideband CDMA)
• Became to standard for IMT-2000 in 1998 by ITU
  (International Telecommunication Union)
• Developed from GSM/GPRS
• WCDMA handles up to 2 Mbps for local area access
  or 384 Kbps for wide area access.
• GSM to WCDMA, protecting investments by re-using
  the GSM core network and 2G/2.5G services
• Wideband direct-sequence spreading
• 3.84 Mcps chip rate
• Spreading gains (ratios) from 4 to 512

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Overview of WCDMA Cont.
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CDMA2000 Family

• 1xEV-DO and 1xEV-DV are both backward compatible
  with CDMA2000 1X
• CDMA2000 1X
• First commercial CDMA2000 1X launched at South
  Korea in 2000.
• 144 Kbps data transfer rate
• CDMA2000 1X EV/DO (Data only)
• True 3G mobile network
• Data transfer rate - 2.4 Mbps and average should
  be 621 Kbps
• CDMA2000 1X EV/DV (Data Video)
• EV/DV technology is still in research area
• CDMA2000 1xEV/DV provides integrated voice and
  simultaneous high-speed packet data multimedia
  services at speeds of up to 3.09 Mbps.

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CDMA2000 Family Cont.
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WCDMA Vs. CDMA2000

• There are too many opinion between these two
  standards

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4G Mobile Telecommunication

• Promise of 4G
• Support terminal and personal mobility
• Flexible roaming and hand-over supported
• To other different systems and networks
• Efficient support of various services
• Including symmetrical and asymmetrical services
• (Broadcast and distribution services)
• Maintaining QoS (comparable with wire-line
  network)
• Target mobility and information bit rates
• 2 Mbps (250 Km/h)
• 20 Mbps (60 Km/h)
• 100 Mbps (3 Km/h)

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4G Mobile Telecommunication Cont.

• Promise of 4G
• Economic deployment of systems
• With optimized radio interfaces
• Among macro cells, micro cells, indoor, hot spots
  and
• broadcast networks
• To accommodate mixed-mode multi-standard services
• To employ any future services
• Why needs 4G
• Maximum data rate in the air (3G)
• 2Mbps
• Separate Core Networks
• Voice Core Networks
• Data Core Networks
• Non-perfect global roaming supported

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4G Vision (ITU)
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Idea of 4G
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4G Technology

• OFDM (Orthogonal Frequency Division Multiplex)
• Technology that transmits data simultaneously
  over a large number of channels at different
  frequencies, enable to send an large data
• Using in IEEE 802.11a g, Hiper-LAN II and IEEE
  820.16 BWA
• Smart Antenna
• A smart antenna system combines multiple antenna
  elements with a signal-processing capability to
  optimize its radiation and/or reception pattern
  automatically in response to the signal
  environment.
• Amplify the frequency to user who wants to
  communicate
• Can adopt to OFDM SDR

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4G Technology Cont.

• SDR (Software Defined Radio)
• From military research (SPEAKeasy Project)
• SDR technology is enabling frequencies and
  communications methods and to be changed flexibly
  by means of software. It responses to Internet
  Protocol version 6 (IPv6).
• MBMMR forum (MultiBand,MultiMode, Radio)
• Still in research area

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Roadmap of 4G
Next Generation Mobile Communication (Ichiro)
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• Question?