" This is a book about 5G, but not make it clear that the focus of 5G technology, reading books because there are a lot 5G technology has been, I do not technical experts. The book is to explore a new network system under development and changes in the industry, and the impact on society and the economy 5G .P6 "

5G era

Author: Xiang Ligang

Press: China Renmin University Press
Subtitle: What is 5G, how it will change the world
Published: 2019-5
Pages: 300
Price: 69 yuan
Binding: Paperback - perfect bound
ISBN: 9787300268415

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Thought it was a technical expert or experts in the field in terms of technology + applications, the results are not technical experts say the beginning of the book is to explore the development of industry and 5G bring change, the impact on society and the economy.

Information concentration is very low. Open chat language from birth, to the 93 before it comes to 5G. 5G technology is some of the information between a pile of about 100-150 pages. After the content is to change and influence 5G may bring a variety of industries to human society, this diversion to lack of evidence and logic conceived the illusion derived.

Compare procrastination style, for example, you can actually speak Watt saw half a page to open the lid water jump story.

2 stars overall evaluation, very disappointed, not recommended reading.

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The following are some of the content of the book excerpt:

1: This is a book about 5G, but not make it clear that the focus of 5G technology, reading books because there are a lot 5G technology has been, I do not technical experts. The book is to explore the development and change under a new network system industry, and the impact on the social and economic 5G. P6

2：谈到5G,自然离不开场景,就是在什么地方使用。对此,国际标准化组织3GPP定义了三大场景:eMBB(Enhanced Mobile Broadband)3D/超高清视频等大流量增强移动宽带业务;mMTC(Massive Machine Type Communication)大规模物联网业务;uRLLC(Ultra-Reliable Low-Latency Communications)-无人驾驶、工业自动化等需要低时延、高可靠连接的业务。P95

3：D2D通信即设备到设备通信(device-to-device communica-tion,D2D),是一种基于蜂窝系统的近距离数据直接传输技术。目前,标准化组织3GPP已经把D2D技术列人新一代移动通信系统的发展框架中,成为第五代移动通信的关键技术之一。P119

4：M2M通信即机器与机器之间的通信(machine t omachine,M2M)。美国咨询机构FORRESTER预测估计,到2020年,全球物与物之间的通信将是人与人之间通信的30倍3。P120

5：专用芯片:除了计算、存储这些通用芯片之外,在5G通信基站及相关设备上,还会有一些专用芯片,这个领域依然还是美国占据优势。除了英特尔、高通这样的企业外,还有大量的企业生产各种专用芯片。中国是这些美国企业最大的市场。欧洲也有一些企业生产专用芯片。中国在这一领域也有了较大进步,海思、展锐、中兴微电子等企业都在设计和生产专用芯片。P133

6：总体来说,5G智能手机芯片,美国拥有最强大的实力,不过华为已经在旗舰产品上进行抗衡,而在中低端产品上展锐也会有所作为。P134

7：中国电信运营商最值得称道的地方,是在广大偏远地区都很好地覆盖了4G网络,99%的用户都能享受到网络的便利。在农村地区覆盖网络,不仅缩小了数字鸿沟,还对推动当地的社会经济发展起到了很好的作用。在网络部署方面,其他大国与中国的差距非常明显,这种差距在5G网络部署中依然会出现,P143

8：近14亿用户的市场需求也是其他国家和地区无法理解的。在其他国家或地区的运营商还在通过高价格来实现高收入和较高利润时,中国电信运营商却用低价格获取了高收人,靠的就是庞大的用户群。P146

9：在3G向4G发展的阶段,电信运营商基本上接受了只做管道的现实,虽然在视频、音乐、支付方面小有作为,但业务规模相对于管道而言体量非常小,社会影响也不大,在市场上的竞争力与一流的互联网公司相比有非常大的差距。P149

10：飞信的衰落很大程度上反映出一个尴尬的现实:电信运营商本身不拥有技术,外包对于稳定的技术来说是适合的,但在技术转型时代,如果自己的技术能力弱,不对技术和用户需求进行研究并找到二者的结合点,情况就会变得糟糕。P155

11：但实际上,电信运营商在云业务发展方面也面临一些困难,因为绝大多数用户需要的云服务,不仅是云存储,还需要建立起管理体系,这就需要对自己的业务进行有针对性的优化,并对不同业务建立起管理系统。而在这一方面,电信运营商提供的服务和技术支持极为匮乏,于是用户流失,竞争不过互联网公司。P155

12：虽然量子通信技术还处于早期实验阶段,但未来用新的通信体系打破旧有的通信体系,取代今天的光波通信和电波通信,就如同用无线通信取代驿站一样,理论上是可行的。P257

全文完

2 stars | xiangligang "5G era": a pile of information, and some imaginary vision, information concentration is too low

5G era

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