Communication technology has undergone five generations of changes, and the key technology updates of each generation are summarized as follows:
From 1G to 2G is the conversion from analog signal to digital signal;
From 2G to 3G is the transition from voice network to mixed voice and data network.
From 3G to 4G is the transition from mixed voice and data to pure data network.
From 4G to 5G is the transition from closed network to open network.
In history, ct technology was born before IT technology. With telegraph, there is CT, so there is a lot that IT technology can learn from CT technology. For example, the earliest model design of Ethernet is OSI seven-layer model, which is very similar to No.7 signaling protocol stack; Then it and CT learn from each other. In the 4G era, because IT is already a pure data network, the core network of 4G has gradually adopted the architecture of IT technology, and the hardware can already adopt the general x86 architecture. Software and hardware began to separate and adopt virtualization technology. At this time, ICT began to merge; In the 5G era, the whole system architecture is an open architecture, and the 5G core network has also begun to develop into a container. In recent years, NFV (Network Element Function Virtualization), which people often talk about, may also be changed to NFC (Network Element Function Container). At this time, the technology of CT core network is no different from the IT technology of mainstream Internet companies now, but if someone really understands ICT fusion technology, IT is still people in the CT industry, because CT people understand it, and IT people do not necessarily understand CT. Many experts in the IT industry just think that they are engaged in infrastructure when they talk about CT.
The update cycle of the whole communication technology is also from the initial 20 years to 10 years to the present 5 years or even shorter. The main credit for shortening the technology update cycle lies in our manufacturers in China. In the past, it took several years for standard agreements to be frozen until commercial products went on the market, but China manufacturers shortened it to one year. In recent years, due to the dominant position of China manufacturers in the formulation of standard agreements, once the standard agreements are frozen, products will come out immediately. Speaking of the dominant position of China manufacturers in the communication industry, let's also look back at enter the dragon, a global equipment manufacturer in the next few decades, to see which manufacturers have stood at the top of the wave.
The era of 1G is indisputable Motorola. At that time, Motorola was not only the only king on the device side, but also the representative of "mobile phone" on the terminal. It can be said that there would be no mobile communication without Motorola, and Motorola has not only made great achievements in the field of mobile communication, but also made good achievements in other fields. For example, in the PC field, Motorola once competed with IBM and Apple (we hated the "Hanxin No.1" counterfeiting incident with Motorola chips), and Motorola was also the inventor of color picture tubes; But it may also be that this multi-directional development has made him lose his dominant position in the field of wireless communication. I like to use Dr. Wu Jun's "declining aristocracy" to define Motorola.
In the 2/3G era, it can be said that Ericsson and Nokia in Europe began to challenge the position of the United States, and finally Ericsson became the market leader. At this time, younger brothers like Huawei and ZTE also appeared in Shenzhen, China. At the same time, after China manufacturers appeared, the market competition between European and American manufacturers became more and more fierce.
The 4G era can be said to be a complete transformation. Huawei defeated the G8 and became the leader. European and American manufacturers survived through mergers and acquisitions and continued to compete with Huawei.
Without the suppression of the United States in the 5G era, Huawei should still be the undisputed number one, but now we have to wait and see who can stand on the top of the wave. ...
No matter who leads in the end, ICT technology will only get closer and closer to our lives. The health code that everyone is using now and the inspection of secret personnel are inseparable from ICT technology. The industrial internet or digital transformation that enterprises are doing now cannot be separated from the integration of IT and CT technologies. What kind of world can be created based on the development of ICT technology in the future is worth looking forward to!