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Evolution of the generations of mobile Communication system. MUSFIQUR RAHMAN Department of Electronic and Telecommunication Engineering University of Liberal Arts Bangladesh (ULAB)
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Page 1: Evolution of the generations of mobile Communication system.

Evolution of the generations of mobile Communication system.

MUSFIQUR RAHMANDepartment of Electronic and Telecommunication Engineering

University of Liberal Arts Bangladesh (ULAB)

Page 2: Evolution of the generations of mobile Communication system.

Outline

• Introduction • Pre-cellular mobile telephony technology/ 0G• Cellular concepts• Handheld mobile phone• 1G• 2G• 3G• 4G/LTE

Page 3: Evolution of the generations of mobile Communication system.

0G Mobile radio telephone

First Mobile Radio Telephone-1924

First Commercial Mobile Telephone-1946

Page 4: Evolution of the generations of mobile Communication system.

0G Mobile radio telephone

Pre-cell phone mobile technology, such as radio telephones that some had in cars before the arrival of cell Phones.

Motorola in conjunction with the Bell System operated the first commercial mobile telephone service Mobile Telephone System (MTS) in the US in 1946

First automatic system was the Bell System's IMTS which became available in 1962, offering automatic dialing to and from the mobile.

Technologies:

* PTT (Push to Talk) * MTS ( Mobile Telephone System)* IMTS (Improved MTS)

Radio Common Carrier:paired UHF 454/459 MHz and VHF 152/158 MHz

Page 5: Evolution of the generations of mobile Communication system.

Cellular concepts• 1947: Douglas H. Ring and W. Rae Young, Bell Labs engineers, proposed

hexagonal cells for mobile phones in vehicles

• Philips T. Porter who first proposed that the cell towers use the now-familiar directional antennas to reduce interference and increase channel reuse Porter also invented the dial-then-send method used by all cell phones to reduce wasted channel time.

• 1960: Formed The concepts of frequency reuse

and handoff by Frenkiel and Porter.

Page 6: Evolution of the generations of mobile Communication system.

Cellular concepts• 1970: Amos E. Joel, Jr., a Bell Labs engineer, invented a "three-sided trunk

circuit" to aid in the "call handoff" process from one cell to another. His patent contained an early description of the Bell Labs cellular concept, but as switching systems became faster, such a circuit became unnecessary and was never implemented in a system.

• 1973: A cellular telephone switching plan was described by Fluhr and Nussbaum.

• 1977: cellular telephone data signaling system was described by Hachenburg et al.

Page 7: Evolution of the generations of mobile Communication system.

Handheld mobile phone

# Motorola produce First handheld mobile phone.

# Dr. Martin Cooper made first mobile telephone call On 3 April 1973

Weighed 1.1 kg and measured 23 cm long, 13 cm deep and 4.45 cm wide.

The prototype offered a talk time of just 30 minutes and took 10 hours to re-charge.

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1G

# In 1979: The first commercially automated cellular network (the 1G generation) was launched in Japan by NTT (Nippon Telegraph and Telephone) initially in the metropolitan area of Tokyo.

# In 1981: the Nordic Mobile Telephone (NMT) system simultaneously launched in Denmark, Finland, Norway and Sweden. NMT was the first mobile phone network to feature international roaming

# In 1983: the first 1G network launched in the USA was Chicago-based Ameritech using the Motorola DynaTAC mobile phone. Several countries then followed in the early to mid-1980s including the UK, Mexico and Canada.

History:

Page 9: Evolution of the generations of mobile Communication system.

1G Analog Cell PhoneA voice call gets modulated to a higher frequency of about 150MHzand it is transmitted between radio towers. This is done using a technique called Frequency – Division ( FDMA )

Technologies:FDMA ( Frequency Division Multiple Access)NMT( Nordic Mobile Telephone)AMPS ( Advance Mobile Phone System)

Problems:No securityProne to distortion

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2GDigital Cell PhoneSpeed : 10kbits/sec

Different Services: Digital Voice CallingShort message service (sms)

Technology :CDMATDMA

Benefits:Improves the voice clarityReduces noise in the lineSecrecy and safety to the data and voice calls

Evolution:2.5G (GPRS) : Implemented a packet-switch2.75G (EDGE) : introduction of 8PSK encoding.[ Developed in 2003 by AT&T USA]450 MHz frequency band

Stander: GSM

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3GFirst 3G was launched by NTT DoCoMo in Japan in the Tokyo region in May 2001Using WCDMAIn 2002 the first 3G networks on the rival CDMA2000 1xEV-DO technology were launched by SK Telecom and KTF in South Korea, and Monet in the USA.

The communication spectrum between 400 MHz to 3 GHz was allocated for 3G.

Technology :# Wideband Code Division Multiple Access (W-CDMA) : Data rate upto 2 mbps# Time Division Synchronous Code Division Multiple Access (TD-SCDMA) # UWC-136# Digital enhanced cordless telecommunications (DECT)

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3G Application:

Internet, e-mail, fax, e-commerce, music,Video clips, video conferencing

Combination a mobile phone, laptop PC and TV

Features includes:- Phone calls- Global roaming- send/receive large email messages- High-speed web- Navigation/maps- Videoconferencing- TV streaming- GPS

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4G4G development focuses around achieving ultra broadband speeds,competing with and in some cases outstripping the speeds providedby home internet connection.

4G average speeds are targeted to be in the 100Mbps to 1Gbps range, roughly 10 to 100 times ( dependent on location) fasterThan 3G networks.

There are two major systems in U.S, which are using the 4G mobile technology – WiMax, LTE ( Long Term Evolution)

WiMax’s majority owner id Sprint Nextel which currently has twoMobile phones, HTC Evo and Samsung Epic

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4GFeatures Include:- A spectrally efficient system- High Network capacity- Huge data rate- Perfect connectivity & global roaming- Security & privacy

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