你知道从1G网发展到5G网的历程吗?

2025-04-04 02:48:58
推荐回答(5个)
回答1:

1G是摩托罗拉公司生产的标准。第二次世界大战期间,1G首先从美国的军事项目开始。自1940年以来,摩托罗拉就一直深入参与这一军事移动通信项目。通信设备体积庞大、笨重,重约5磅,但已经实现了“接收”和“发送”到同一个终端。该设备需要为两名士兵使用一个收发机,通信范围太小了,但在第二次世界大战中,这给美国带来巨大的益处。摩托罗拉在上个世纪八十年代引领了移动通信的商业时代,摩托罗拉的移动通信标准就是最开始的1G。

 

下面是2G。在1G时代,诺基亚就想开发出2G通信设备并执行新的通信标准,并于上世纪90年代开始使用,2G是诺基亚的主导时期。

在2G时代,主要的通信方式是呼叫和发送短消息。无线上网速度不可与今日相提并论。

3G时代,数据传输速度提高了四十倍。然而,3G时代,我国的语音通信网和数据传输网对于互联网仍然是相互独立的。

在4G时代,苹果仍然主宰着世界。网络结构逐渐趋向于扁平化,以减少端到端通信的数量。第二,增加基站之间的光纤带宽。最重要的是4G网络是同时将互联网和通信网络的技术进步利用起来。不同于在3G时代,语音和数据的传输网络是由4G单独实现的。

5G的理论带宽是4G理论带宽的近二十倍,要实现这个数据要扩大频段、扩大频段。然而,频带越高,障碍物受影响的可能性就越大。这个问题可以通过构造一个足够密度的基站来解决。4G时期每2-3公里建设一个基站,而5G所建设的基站数量要多于前一代网络,每个基站覆盖人数可减少两位数。这样可以解决网络拥塞问题,并为更多终端接入移动网络留下所有空间,实现未来生活中的所有物件的互联互通。

回答2:

第一代的通讯技术是模拟通讯,而第二代的就是把模拟信号转换为数字信号,主要的通讯方式就是呼叫和发送短信息,而3G时代的到临,在呼叫和发送短信息上增加了数据通信,就是手机也可以连接互联网了,4G的网络通信改变了很多人的生活,速度也比3G要快十倍,而5G的速度在4G的基础上又高出了很多倍。

回答3:

首先1G到2G时候,只能打电话,到3G时才能上网,聊天等一系列活动,4G可以干更多事。 现在我们的5G技术发展很快,也领先于其他国家。

回答4:

我知道从1G网发展到5G网的历程,1G是1978年底被创造出来的,那个时候限制非常多,到了2G以后增强了很多,3G、4G让速度更快,5G把前4G的优点结合起来。

回答5:

1G时代最具代表性的是大哥大。2G则是诺基亚等按键机的时代。3G则是触摸屏,全民触控的时代。4G各种互联网应用兴起的时代,一部手机就可处理各种问题。而5G则是万物互联的时代。

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