February 2024
Intermediate to advanced
656 pages
20h 45m
English
Content preview from 5G Technology, 2nd Edition
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Foreword
The last 25 years have witnessed an impressive evolution in global mobile communications from voice-centric 1G/2G services to 3G data services starting in 2001, 4G mobile broadband starting in 2010, and 5G starting in 2020. In Japan, NTT DOCOMO launched the world’s first mobile internet service “i-mode” in February 1999 on the PDC-Packet(2G) system, and the service spread widely in Japan in the 3G era. Smartphones were introduced on the 3G system and have spread in the 4G era. The number of mobile subscribers and devices have increased rapidly and data usage has exploded. Data speed has grown from 2.4 kbps in 1993 to beyond 4 Gbps in 2022; that is a 2,000,000-fold increase in less than 30 years. I have been lucky to be part of this evolution in NTT DOCOMO, to have seen firsthand such great achievements and the great challenges the industry has gone through to manage the fast changes. We are now witnessing the beginning of the next major step in the evolution – that is 5G. We believe that 5G is one of the main pillars to provide value and excitement to customers and opportunities for value co-creation with partners in the 2020s. 5G also brings a number of new challenges for the industry to fulfill all these promises.
NTT DOCOMO has been one of the leading companies in developing advanced technologies and services for new-generation mobile communication systems including 5G. NTT DOCOMO launched pre-commercial 5G services in September 2019 and fully commercial 5G services ...
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