All that needed to be discussed had been done, and Fang Chen really couldn't bear to continue abusing Xu Jianshu.

After all, Xu Jianshu treated him well on weekdays, so he finished his tea and prepared to stand up and leave.

But just as he stood up, Dean Zhu suddenly said to him: "Do you think China will be able to use 3G network around the millennium?"

Looking at Dean Zhu's eyes full of hope and seeking knowledge, Fang Chen felt thunder rolling from the sky, and three black lines crossed his face.

Rolling his eyes, Fang Chen said with a helpless look: "Dean, I understand that you are serving the country and the people, and hope that China's economy and communications can develop in great strides. However, if you take too big a step, it is easy to get into trouble. I

It is expected that China will be able to use 3G network around 2005."

"Is 3G network so difficult?"

Dean Zhu didn't care about the rudeness in Fang Chen's words and looked at Fang Chen suspiciously and asked.

Fang Chen initially developed the 2.5G network technology standard in less than two years, and also claimed that the key technology of the 2.5G network, packet data technology, is the key technology of the 3G network, and the 3G network is just an enlarged version of 2.5G

The network is so good, but now he is told that it will take 12 years to realize the 3G network.

No matter how you think about it, this seems a bit unbelievable, even a fantasy.

Moreover, an idea couldn't stop popping up in his mind.

Is it possible that everything Fang Chen said before was bragging?

But it shouldn’t be!

Although Fang Chen does like to brag, based on his previous understanding of Fang Chen and his understanding of Fang Chen as a person, Fang Chen will never brag on such a big matter.

Fang Chen spread his hands and said: "The 3G network, in terms of technical difficulty alone, is not too high, especially when Qingtian has developed packet data technology. If we go all out to tackle the 3G network, it will be about three

Within this year, I am confident that I will be able to bring the 3G network to you."

In the previous life, Europe developed the 2.5G network in 1995 and the 3G network around 1999.

At the end of 2000, South Korea, as the first country to take the initiative, began to officially commercialize 3G networks.

Immediately afterwards, Dongwo started to use 3G network in 2001.

The large-scale use of 3G networks around the world took place around 2004 or 2005.

As for China, it is the latest among major economies, having only approved its first 3G network license in 2009.

But in this life, with his presence, Qingtian Communications will be able to break through the 3G network in less than three years.

After all, as a professional practitioner in the communications industry, although he cannot independently develop 3G networks, he can ensure that Qingtian Communications' research lines will not go astray and can reach the goal as quickly as possible.

But the problem is that the 3G network was not suitable for China at that time.

He feels that it would be a good choice to wait until around 2005 to start commercial 3G networks with European and American countries, that is, four years in advance.

By then, China will not only be richer, but maybe it has already made a smartphone?

"Then why would you put the use of 3G network in China after 2005, so long?"

After listening to Fang Chen's explanation, Dean Zhu became even more curious. He felt like he was in the clouds and mist, surrounded by clouds and mountains.

"So, you don't understand mobile communication networks." Fang Chen sighed.

Dean Zhu's face turned dark instantly, and he looked at Fang Chen with an unkind look on his face. He wanted to say something, but in the end he didn't say anything. He could only give Fang Chen a fierce look in the end and gave up.

As a person, he has always been sincere and based on facts, and he never thinks that he knows much in other fields that are not his own expertise.

If you meet other experts and scholars, even if you are a worker, and you say this to him, he will be able to accept it with an open mind and not be ashamed to ask for advice with an attitude of learning.

But these words came out of Fang Chen's mouth, why did he feel like he was intolerable?

After thinking about it over and over again, he felt that it was probably because Fang Chen was too annoying and too talkative.

"The first is the cost issue. The coverage radius of the mobile communication base station of the 2G network is about 5-10 kilometers, while the coverage radius of the mobile communication base station of the 3G network is about 2-5 kilometers. This means that it is also a base station, and a 2G network

The area covered by the base station requires four 3G network base stations, which will increase the cost by four times."

"There is no way around it. If the 3G network wants to transmit faster, it will inevitably have to increase the frequency higher than the 2G network. This will inevitably lead to the 3G network having a shorter wavelength and shorter transmission distance than the 2G network.

The signal attenuation is large, the penetration is weak, and the ability to wrap around the body is poor.”

"The construction of a large number of 3G network base stations is obviously very inappropriate for my country's vast land and poor economic conditions."

"If you really want to build a large number of 3G networks, you must wait until the public has the wealth to match the 3G network, or the necessary demand." Fang Chen said slowly.

Hearing this, Dean Zhu could not help but frown slightly, feeling ashamed that this was something he had not considered.

It is true that as Fang Chen said, the area of ​​China is really too big, and the people are really too poor.

Things like 2G base stations that are cheap and affordable and can solve the needs of most people to make mobile phone calls are what China needs most now and even in the next ten years.

If it is really just to reflect China's technological progress and blindly build 3G networks on a large scale, it will be a sign of great success.

Seeing Dean Zhu's somewhat regretful expression, Fang Chen couldn't help but smile to himself.

He relied on Dean Zhu's ignorance of the future and the development of communication technology to bully Dean Zhu.

Compared with 2G base stations, the attenuation of 3G base station coverage is nothing.

If Dean Zhu knew the attenuation situation of 4G base stations and 5G base stations, he would probably be scared to death.

In the 5G era, the coverage area of ​​a base station is only 500 meters. In terms of coverage area, it is only one-fourth of that of a 2G base station. In other words, the coverage achieved by a 2G base station will require 400 base stations in the 5G era.

.

However, it is precisely because of this consideration that China's large-scale commercial 3G network is four or five years later than that of European and American countries.

Furthermore, before 2009, smartphones had not yet become popular, and most people around the world did not have any need to use high-speed Internet, so it does not matter if it is a few years later.

In addition, the reason why China is four or five years behind European and American countries is that in addition to the gap in demand and wealth, there is another very important reason.

First of all, European and American countries, especially European countries, are small countries with high population density. However, for things like base stations, the more users there are within the coverage of a base station, the lower the construction cost will naturally be.

For example, if they are both countries with a population of one million, but their areas are ten times different, then if a large country wants to cover the whole country, the number of base stations it needs to build will be ten times that of a small country.

This cost is naturally high.

As the third largest country in the world by territorial area, China wants to cover the entire territory with base stations, and the cost is obviously much higher than those of small European countries.

As for the United States.

Although the territory of the United States is about the same size as that of China, the national conditions of the two countries are different.

China builds base stations, electricity, roads and other infrastructure related to people's livelihood, basically regardless of cost.

It seems to be a matter of course in China to build power lines, build communication base stations, build roads, etc. for a dozen or even a few families living in deep mountains.

But if we look closely at costs and profits, these are very loss-making transactions.

This kind of situation is even more impossible to exist in Western countries. After all, their enterprises are private, and private enterprises must consider profits, and it is impossible to do such stupid things that will not recoup their capital in a hundred years.

This also caused that in the 4G era, there were still 4G network signals in the city, but once you left the city, even taking the subway, there was only a 2G signal, or even no signal.

But China did it without hesitation.

However, the cost of doing so will inevitably be borne by the entire population, which will inadvertently push up the construction costs of more advanced network facilities.

China itself is poor, and the cost is still high, so China's interest in building 3G base stations is naturally not high.

That is to say, the rise of smart phones, the emergence of a large number of software applications, and the demand for them have led to a large wave of 3G network construction in China.

However, in later generations, China's 5G network construction also faced these two very embarrassing problems.

Although the 5G network is advanced, there are no scenarios where it is necessary to use the 5G network. For short videos, live broadcasts, etc. that appeared in the 4G era, you can still get a good experience using the 4G network.

In addition, the construction cost of 5G base stations is high, which is three to four times that of building 4G base stations.

As the tariffs remain high, people naturally have no interest or need to switch to 5G networks.

The reason why China is building a large number of 5G base stations can only be said to be to prepare for a rainy day.

It's like building roads first if you want to get rich.

Regardless of whether the village needs road construction or not, the road should be built to the entrance of the village first.

After all, only if the road is built first can some products and people in the village go out.

And once 5G applications appear, China, which has already covered a large number of 5G networks, will completely outperform other countries, leaving other countries behind.

However, the prosperity of China's short video applications and the expansion of a certain voice into the global market, which has a certain voice and influence, and even attracted extremely unreliable and outrageous sanctions, are all related to China's huge scale of 4G network construction.

It is precisely because China has built more than 60% of the world's 4G base stations, laying fertile soil for these short videos, that these short video applications came into being.

Without such a large number of 4G network construction, these short video applications would naturally not have appeared.

"What you said does make sense. It seems that China's future technological progress still has a long way to go." Dean Zhu said mockingly.

He originally thought that Fang Chen said that he did not start using the 3G network until 2005 because Qingtian's technical strength was not good enough.

But now, it's his problem.

It's because he failed to improve China's economic development and the people's pockets to the point where they can use 3G networks.

"So, I think that compared with 3G, how to reduce the cost of 2G network construction, make mobile phones affordable for more people, and make Chinese people spend less on phone bills is the path we need to take in the future." Fang Chen said in a deep voice.

This is also the guiding goal he set for Qingtian Communications R&D Department.

Ericsson's current quote for the cost of building a 2G base station is as high as 40 million. At this price, covering a city in Yanjing would cost 12 billion.
To be continued...