话说，从3G和4G开始，我们对这种起名方法就已经不陌生了。不过，大家都知道这个G到底是什么意思吗?3G、4G、5G又分别是什么呢?今天就让小编来科普一下这个吧~
首先，这个 G 代表的是 Generation(一代)5G 的全称是 5th generation mobile networks，也就是“第五代移动网络”。然后，5G 和 4G 相比，除了速度更快以外，它还能容纳更大的用户密度(user density)换句话说，扎堆上网拖网速的现象会减轻很多。而且它支持一种叫“设备到设备通讯”的技术：Device-to-Device Communication(D2D)3G、4G网络里，所有的设备之间，如果要传递信号，这些信号都需要经过中转站。而 5G 里面则可以通过这种 D2D 技术直接传，这也是它的速度得以进一步提升的原因之一。
参考范文：
5G的详细介绍及前景展望
目录
1 2
The development of mobile communication technology What is 5G? Why do we need 5G?
34
Research status and challenges of 5G.
1
The development of mobile communication technology
The development of mobile communication technology
Digital mobile communication system Broadband access and distribution network system
1G
Simulation of mobile communication system
3G
multimedia mobile communications system
2
What is 5G?
01 An English abbreviation
5G is the English abbreviation of “The fifth generation mobile communication technology”
An English abbreviation
converged
02 UNE
Compared with 2G, 3G and 4G, 5G is not independent and brand-new. It is a combination and further development of present mobile communication technology.
03 A green energy network
network
Besides the speed upgrade, 5G will also meet the requirements of large bandwidth, super high capacity, super dense site, super high reliability and whenever and wherever possible access.
A green energy network
Some details about 5G
