"Wait", Chief Yang seemed to be a little relieved, "Let me think about it, someone must have proposed this plan before, but it shouldn't be a drone",

"Yes, it's a balloon, I remember, Mi Ge's Loon project seems to use balloons to achieve communication relay services", Chief Engineer Yang slapped his thigh and said loudly,

Wang Yinan nodded, "Indeed, Mi Ge once had a Loon project, using high-altitude balloons to relay signals."

"But there are two fatal problems with their project," Wang said.

"What is the fatal problem, there are actually two?" , Chief Teacher Yang asked,

"The first problem, of course, is the vehicle they choose, the choice of balloon is to shoot the head, it looks beautiful typical, balloons, rough thinking, the cost is very low, but the operation of the balloon is not completely controllable, in order to maintain the position of the transponder, it is necessary to design a variety of additional equipment, such as black and white balloons, such as lifting equipment, to choose the airflow according to the height and so on",

"In this way, the final cost and complexity are more than the seemingly expensive drones," Wang Yinan said.

"Another problem, Mige is a company, not a country, strictly speaking, Mige does not have its own airspace",

"So Mi Ge can only try his best to persuade South American countries to deploy their own balloon network, but thinking that the sky above his country is full of balloons made by a rice country company, any sovereign country will shudder," Wang Yinan concluded.

"So, in the end, this project will definitely end without a hitch."

"Let me think, let me think", Mr. Yang walked to the front of the big blackboard in the office, since seeing the big blackboard in Wang Yinan's office, Mr. Yang felt very good, so he also got a big blackboard for his office, and it was equipped with automatic erasing equipment, which looked quite cool.

Mr. Yang drew an old hen laying eggs on the blackboard, well, it is a map of China, "according to the square outline, the distance between east and west and north and south is about 5,000 kilometers", Mr. Yang said,

"What is the approximate coverage of a drone?" , Chief Teacher Yang asked,

"From the point of view of the best filling scheme, the square and the circle are definitely not the best, and the best scheme should be the filling of the honeycomb shape", Wang Yinan stepped forward and drew a regular hexagon in the center of the old hen, as well as the schematic diagram of the adjacent six regular hexagons,

"If the ideal signal transmission distance of 500 kilometers per UAV is followed, that is, the side length of a regular hexagon is 500 kilometers",

"The area of a regular hexagon is three-thirds multiplied by 500 kilometers squared," Wang Yinan wrote on the blackboard, presumably, "650,000 square kilometers."

"No", just after writing Wang Yinan, he found that he had made a mistake, "500 kilometers should be the distance from the center of a hexagonal to the center of another hexagon",

"The side length of a regular hexagon should be half of 500 kilometers, that is, 250 kilometers",

Wang Yinan erased the "65" in the "650,000 square kilometers" on the blackboard, and said, "The coverage area should only be a quarter", he changed it to "160,000 square kilometers".

Chief Master Yang nodded, "That's right, the service area of a drone is 160,000 square kilometers", "Considering the shape and redundancy of the border, my country's territorial area is about 10 million square kilometers", "There is also the sea frontier, we calculate according to half of the land area, that is, a total of 15 million square kilometers",

"Less than 100 drones?" , Writing the word 100 on the blackboard, Chief Yang still couldn't believe it, "It's so simple? ”。

"It's as simple as that", Wang Yinan nodded, "Of course, this is the most basic requirement to complete full coverage, if you only consider military use, this less than a hundred drones should be enough",

"If you take into account the civilian market, the network development situation is different in various places, in the coastal and eastern developed areas, the bandwidth demand for network communication is much greater than in the west, or at sea, so in those areas, you need to increase the density of the cell, or run several relay drones in the same cell," Wang Yinan said.

"There is another application scenario", Wang Yinan added,

"Our ocean-going fleet, and even the civilian fleet, can put a drone into the sky every few hundred kilometers when it is far from the mainland, so that as long as there are ten or eight drones flying on the route, it can be connected with the country without going through satellites."

"And through such a network, it is estimated that you will not suffer because of the delay", Wang Yinan said,

"This is simply a sky fiber optic cable that is laid wherever you go", Chief Master Yang's eyes also lit up, "You should really dig out your head to see, how long is this heart eye."

"If I think about it again, there are still any missing problems", said Chief Teacher Yang.

"Where satellites and sounding rockets need to be launched, the Aerospace Science and Technology Commission must have a detailed plan, and those places can be avoided, and this is not a big problem if you pay a little attention," said Chief Engineer Yang.

"There are also experiments with high-altitude aircraft", Wang Yinan added, "We can provide real-time drone position and altitude information to the Commission of Science and Technology, and units with corresponding permissions can get it".

Chief Master Yang nodded, "Even if there are hundreds of them nationwide, they are very sparse and will not have a great impact on aerospace and high-altitude exploration."

"How to communicate with the ground", Chief Yang suddenly thought of a key question, "Mi Ge seems to be connected directly through i-Fi",

"The earliest version of Mige is i-Fi, and the latest version is directly through LTE, which is the usual 4G network," Wang Yinan added.

"My idea is that we don't need to do it all at once, we can take LTE as a long-term goal, and we can use dedicated microwave communication equipment in the first stage," Wang Yinan added.

"In this way, our stratoprowlers can achieve two goals in the short term",

"First, to provide a low-latency, high-reliability, large-capacity military communications network, the delay is more than an order of magnitude lower than that of satellites, and even more reliable than satellites, and the enemy's space-based weapons can attack our communications satellites and even military satellites in wartime, but it is impossible for them to attack hundreds of stealth drones in China's airspace."

Chief Master Yang smiled, he was still very confident in the stealth technology of the 116 Institute, "Then they have to find a way to find our plane first."

"Second, we can deploy special civil ground stations in large cities and the central nodes of the existing network, so as to build an independent network Shinkansen in addition to the existing national optical fiber backbone network, which perfectly solves the interconnection problems of major operators in the civil Internet, as well as the problems of jamming and packet loss during peak hours."

After Wang Yinan finished speaking, Chief Master Yang fell into deep thought, it sounded that the whole plan was very complete and very feasible, but it always felt that something was not quite right, and Wang Yinan must have hidden a hand somewhere.

Wang Yinan did hide a hand, and it was a big one, of course, he didn't mean to hide it from Chief Master Yang, after all, this matter was too big to be so simple.

Have you noticed the communication protocol between the drone and the ground that Wang Yinan talked about, mentioning LTE, that is, the 4G protocol, in fact, this is Wang Yinan's deepest hidden killer feature.

On the communication equipment carried by the drone, the first generation stratospirer can use the transceiver produced by Dongfanghong Co., Ltd. to achieve the short-term goal that Wang Yinan said, but please note that the stratosphere prowler can fly down at any time to upgrade the equipment!

According to Wang Yinan's research on molecular machines in their laboratory, as well as the maturity of superconducting materials, it is very likely that a very big breakthrough will be made in the transmission and processing of signals, which means that the processing capacity and distance of signals will likely be improved.

In other words, it is very likely that Stratoplanar will only need to massively increase the density of the cell after upgrading the second or third generation transceiver equipment, for example, reducing the cellular radius from 250 km to 100 km, or even higher in densely populated areas.

Under such conditions, all ground equipment can communicate directly with the stratosphers in the sky through the LTE protocol, unless in the basement or elevator that is too well shielded, ordinary users can directly use their mobile phones to connect to Wang Yinan's data network, of course, connected to the data network, voice or video call, is that still a thing?

This is a super operator, and now the tower company, is the base station construction of what is not separated from the operator, Wang Yinan as long as he finds the tower company, in the newly built tower plus his equipment, this is much easier than other operators, there is electricity, just see the sky.

In this way, even the shortcomings of the room are also made up.

Therefore, how can Wang Yinan say this, saying it will definitely frighten Chief Yang, some things can only be done secretly, can not be said, and when the first and second steps of Wang Yinan's vision are realized, everyone has accepted this independent semi-military background trunk communication manufacturer, and it is not too late to discuss the necessity of full competition in the telecommunications industry.

Chief Master Yang thought about it for a long time, and with his experience and intelligence, it is estimated that he could guess the edge of the point, but even if this is Wang Yinan's conspiracy, it is also a great thing for the benefit of the country and the people, and Chief Master Yang can't jump out and be a saint.

"It can be based on the aerodynamic shape of the cloud shadow drone, but it must be redesigned, after all, one is high-speed, one is low-speed, one is a piston engine, and the other is an electric propeller", said Chief Engineer Yang.

"You are an expert in this area, you have the final say", Wang Yinan nodded,

"Solar panels, as well as lithium batteries, we have supporting manufacturers, there are several drones that are also used before, if you don't have a better choice, use ours",

"It's no problem to use your supporting manufacturers for the time being," Wang Yinan said.

"However, our laboratory is researching a new generation of lithium batteries, and there should be results soon, and we can try it when the time comes."

"Damn, you're still working on lithium batteries", Chief Master Yang was completely dizzy, "You can eat such a good thing by yourself, and you won't put it in our joint materials laboratory".

"It was launched a long time ago, and it should be produced recently," Wang Yinan said.

"Don't worry, there are good things for you to use as soon as possible",

"When will the superconducting motor be taken out, the transponder doesn't need to worry, just give us the technical parameters first, and just get some payload to carry out flight tests", Chief Engineer Yang asked.

"Let's fight for three months, I'll catch this myself, I'm also going to get two propellers on my SUV, and when I'm stuck in traffic, I fly over, it's cool to think about",

"Okay, I'll install one when I'm ready, do you need a pilot's license for this?"

"I don't think so," Wang Yinan said.

"Even if you use it, wouldn't it be a matter of minutes for you to get a pilot's license?"

"That's right, I'll get you a helicopter driver's license when I go back", Chief Engineer Yang nodded,

"Hey, I really haven't seen a helicopter driver's license, do you have one, show me",

。。。

The topic was distorted by these two people.