Ultra-Dimensional Technology Era

"Chairman Chen, the satellite has been debugged and can enter the communication test." Fan Xinhang, director of Star Communications, came over with the document.

Chen Wenna took it over and signed the consent test.

Then the test began, 30 satellites were divided into 10 groups, and a group of 3 satellites was running on the same orbit.

And these ten orbits will pass through Huaguo, and initially achieve full coverage of all parts of the country, so that at the same time, at least 8 satellites are in the sky above Huaguo to ensure that there will be no obvious gaps in the communication range.

As the test began, the satellites began to be networked. First, 30 satellites were connected into a network to share resources.

And the communication base station on the satellite, the functional clusters composed of those 12nm chips, started to operate quickly, and then aimed at the side of the ground of Blue Star, those terahertz transmitters also started to operate, continuously emitting terahertz waves to the ground .

In the mountainous area of ​​Baise City, a newly erected satellite pot and communication base station were set up on the hillside.

There are also many staff members of the Citizen Trusteeship Agency, holding a special terahertz Huawei mobile phone in every corner of the mountain village.

drop!The indicator light of the base station signal receiver changes from red to green, indicating that the staff can access the network.

"Group leader Huang, you can go online now."

Huang Tianci immediately turned his head and said, "See if you can land in Nanke Mengjie."

"Ok."

Several staff members were already ready to go, and immediately put on the brain wave glasses, and then their eyes went dark, and they entered the Nanke dream world.

Before they used the optical fiber network to go to Nanke Dreamland, the freezing situation could make people doubt their lives, but now they feel like they are in the real world.

But they didn't forget that they were testing now, so they quickly turned on the communication module and sent a message to Huang Tianci, explaining their situation in Nanke Mengjie.

And those staff who are holding terahertz mobile phones in various places in the mountainous area are also trying to surf the Internet and make phone calls. As for going to Nanke Mengjie, unless they are within a 3-kilometer radius of the base station, don't even think about it.

Tests across the country are also underway.

Chapter 113 Communication Test

At this time, whether it is in the snowy area of ​​the Qinghai-Tibet Plateau, or on the Hulunbeier prairie outside the Great Wall, or in the wind and sand in the Tarim Basin.

As long as there is a communication base station, you can log in to Nanke Mengjie directly through the brain wave glasses.

In the twists and turns of the Yunnan-Guizhou Plateau, under the blue sea and blue sky of the South China Sea, and in the bustling cities on both sides of the Yangtze River.

Countless testers with terahertz mobile phones are making calls, sending text messages, and surfing the Internet.

Huang Tianci, who was in Baise City, took his mobile phone, chose a movie website on Citizen's Home, and clicked to download the just-released sci-fi movie "Mechanical Planet".

After paying, he clicked on the movie and it appeared on his mobile phone. He hardly felt the download time, and opened multiple web pages at the same time, and the Internet speed was still very fast.

In terms of traffic monitoring, the download speed has almost reached 300G per second, and the upload speed is almost the same.

The 5G communication currently under development can theoretically reach 10G per second, but in fact it cannot reach this value. In Huawei's communication laboratory, it can achieve 400M per second.

As for the 4G communication currently in use, it is generally below 10M per second, while the wired optical fiber communication is about 1000M per second.

It can be seen that terahertz communication is more powerful than optical fiber communication, 4G, and 5G, and terahertz has not yet reached the limit. Its upper limit of transmission speed is about 1T, that is, 1024G per second.

In fact, terahertz communication has a huge problem, that is, the path loss is serious, and the traditional communication distance will not exceed 10 meters.

However, Huang Mingzhe solved this problem. He found a special frequency band from the terahertz frequency band, and then stimulated a characteristic of this frequency band through power and encoder.

That is the characteristic of the ionospheric amplifier. After this special frequency terahertz wave passes through the ionosphere of the atmosphere, it will be greatly amplified, and can penetrate most of the air components, effectively reducing the problem of path loss.

In this case, it not only avoids the embarrassment of traditional communication satellites, which is easily disturbed by atmospheric motion; but also different from the helplessness of traditional wireless communication base stations, it is necessary to arrange a large number of base stations to ensure communication quality.

In areas without base stations, terahertz communication can still provide a communication quality of about 30G per second; while in areas covered by base stations, it can reach the fastest communication quality of 360G per second.

For example, Huang Tianci's current Gaolingzhai, this base station can cover a radius of about 3 kilometers, but considering the obstruction of the mountain, it is estimated that it can only reach about half.

However, this problem is not unsolvable. Relay stations can be built in various regions. The terahertz communication jointly developed by Sisishe and Huawei adopts two modes in parallel.

That is, communication satellites provide large-scale communication, while ground base stations provide small-scale high-quality communication, forming coverage without dead ends.

In addition to the large base stations in mountainous areas like Gaolingzhai, at this time in the eastern metropolitan area, Guan City, Huizhou City, and Shanmei City are still testing micro base stations.

In an ordinary office building in Shanmei City, more than a dozen testers are testing the micro base station. The size of the micro base station is about the same as our common router. After plugging in the power supply, it can serve a radius of 50 to 20 meters around.

The micro base station can be directly connected to the computer and mobile phone, and can also be connected in series to the large base station to achieve comprehensive coverage in the city.

"It's so fast!" The tester walked around the entire office building with a terahertz mobile phone, while another tester kept recording the data.

These data need to be fed back. As an improvement of the terahertz communication system, there must be some problems as the first generation product. Although it is perfect in the laboratory, in actual application, the situation is much more complicated than that in the laboratory.

"I found a problem, there is a certain amount of interference after being close to electrical appliances, especially when it is around the original 4G base station, the interference is very obvious."

"In addition, if it is a reinforced concrete wall, the barrier effect is stronger than that of a plywood wall. In the underground parking lot and tunnel, it is almost impossible to receive satellite signals, so we can only rely on the base station."

"Another issue, the phone's lack of memory, can also become a big problem."

The user feedback was sent back to the joint operations center in Haicheng County. Chen Wenna and Yu Chengdong, Wang Kedao of Iron Tower Company, and Fan Xinhang of Starcom were discussing these matters.

The Tower Company was originally a joint venture between China Mobile, China Unicom and China Telecom, but the situation is different now. The Citizen Trusteeship injected capital into the Tower Company and held 27.6% of its shares, becoming the largest shareholder.

After all, Thinking Society and Citizen Trusteeship Society are the initiators of terahertz communication, and Star Communication has become the fourth domestic communication service operator, and also holds 30 terahertz communication satellites.

Even without a communication base station, Star Communications can still grow, but the three giants of China Telecom, China Mobile, and China Unicom can only acquiesce in the entry of this competitor into this market.

Because they also need terahertz communication, this is the background for the successful acquisition of shares of Tower Corporation by the Citizens Trust, and both parties get what they need.

"Mr. Yu, your Huawei mobile phone still needs to further adapt to terahertz communication!" Chen Wenna has already seen the problem of insufficient memory in the mobile phone.

Yu Chengdong could only helplessly: "Hisilicon chip launched 12nm 64G memory last month, it seems that it is still insufficient."

He also didn't expect the world to change so fast. In the past two years, everyone was talking about 5G communication, but now they have come up with terahertz communication (6G), which has caused some hardware to fail to keep up with the communication system.

To satisfy the terahertz communication system, it is estimated that T-level memory will be sufficient initially.

"I heard that SMIC has developed a 128G memory, Mr. Yu can think about it." Chen Wenna reminded.

"Hehe, I will consider it." Yu Chengdong replied with a dry smile. Of course he knew that SMIC had successfully developed 128G memory, but the problem was that it was very expensive, three times the price of 64G memory.

Obviously he doesn't want to buy chips from SMIC. In addition, Huawei also has chips from the chip company HiSilicon. Of course, the order must be given to his son.

But in the current situation, after weighing the pros and cons, he decided to buy a batch for use on high-end mobile phones, and the ordinary mobile phones will be left behind for the time being.

The test lasted for three days, and the four companies improved and adjusted the terahertz communication system according to the problems found during the test.

Testing and adjustment work will be carried out alternately, and they are striving to improve the terahertz communication system to perfection.

While each company is improving its own part, it is also communicating with the problems in the process.