Hello Teddy,
I located a number of good resources for information about the history
of mobile communications.
International Engineering Consortium provides a comprehensive tutorial
which explores the history of mobile communications leading to the
proposal of UMTS.
The tutorial includes:
Definition and Overview
1 Evolution of Mobile Communications
2 UMTS Network Architecture
3 UMTS Interfaces
4 UMTS and UTRAN Measurement Objectives
5 Appendix
International Engineering Consortium
http://www.iec.org/online/tutorials/umts/
Evolution of Mobile Communications
“Electromagnetic waves were first discovered as a communications
medium at the end of the 19th century. The first systems offering
mobile telephone service (car phone) were introduced in the late 1940s
in the United States and in the early 1950s in Europe.”
- Less than one million subscribers were registered worldwide by the
early 1980s.
“The introduction of cellular systems in the late 1970s and early
1980s represented a quantum leap in mobile communication (especially
in capacity and mobility). Semiconductor technology and
microprocessors made smaller, lighter weight and more sophisticated
mobile systems a practical reality for many more users.”
- Nearly 20 million subscribers by 1990.
Second Generation (2G): Multiple Digital Systems:
“The development of 2G cellular systems was driven by the need to
improve transmission quality, system capacity, and coverage.”
- “GSM is the most successful family of cellular standards (GSM900,
GSM–railway [GSM–R], GSM1800, GSM1900, and GSM400), supporting some
250 million of the world’s 450 million cellular subscribers with
international roaming in approximately 140 countries and 400
networks.”
Source: International Engineering Consortium
http://www.iec.org/online/tutorials/umts/topic01.html
Mobile Network Evolution: A Revolution on the Move
http://america3.pcs.cnu.edu/~jhubbard/cpsc502/paper_review.pdf
Mobile Telephone History
http://www.privateline.com/PCS/history.htm
The article mobiles getting out of hand by Mahesh Hariharan discusses
the history of mobile communications
http://www.blonnet.com/businessline/2001/04/25/stories/242539m8.htm
Additional information that may interest you:
History of GSM
http://www.mobile-support.org/html/library/history/historyofgsm.html
History and Timeline of GSM
http://www.emory.edu/BUSINESS/et/P98/gsm/history.html
Communications Timeline
http://www.questacon.edu.au/html/communications_timeline.html
Search Criteria:
"history of mobile communications"
timeline of mobile communications
I hope you find this helpful.
Best Regards,
Bobbie7-ga |
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