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第三代移动通信(3G)为日本经济社会作出了重大贡献。但是,随着科学技术的迅速发展,现有传统的移动通信系统已不能满足人类日益增长的需求。在这样的背景下,第四代移动通信(4G)应运而生。目前,日本的第四代移动通信(4G)技术已经发展得比较完善,基础设施已经投入建设,政府已向四大运营商发放了LTE牌照,各种业务已在向全国推广。第四代移动通信的普及与应用,是日本移动通信技术的又一次革命,它必将对日本经济社会产生重大影响。
The third generation of mobile communications (3G) made a significant contribution to Japan’s economy and society. However, with the rapid development of science and technology, the existing traditional mobile communication system can no longer meet the growing needs of mankind. In this context, the fourth generation of mobile communications (4G) came into being. At present, Japan’s fourth-generation mobile communications (4G) technology has been developed relatively well and infrastructure has been put into operation. The government has issued LTE licenses to the four major carriers and various services are already being rolled out throughout the country. The popularization and application of the fourth generation of mobile communications is another revolution in Japan’s mobile communications technology and will surely have a significant impact on Japan’s economy and society.