Chapter 1332: Base station handover

Mobile communications and fixed telephone networks require a base station. The role of this base station is to provide a certain radio coverage area, through the mobile communication switching center, to transmit and receive information with mobile phone terminals. Letter radio.
It can be said that the set of equipment Qin Guan brought in the hotel is a miniature base station, and the most common base station is the mobile signal transmission tower outside.
A complete base transceiver station includes wireless transmitting/receiving equipment, antennas and all wireless interface-specific signal processing parts. The base transceiver station can be regarded as a wireless modem, responsible for the reception and transmission of mobile signals.
However, any base station can cover a certain area. For example, Qin Guan's small base station has a range of only five kilometers.
Large-scale base stations also have a limited operating range, so once they leave the range of the base station, mobile phones cannot communicate.
At this time, networking is needed, that is, in an area, multiple sub-base stations and transceiver stations form a cellular network with each other, and move by controlling the signal transmission and reception between the transceiver station and the transceiver station. For the transmission of communication signals, the area within this range is what we often call network coverage.
Because this kind of transmission is like a honeycomb, it is also called a cellular mobile phone network.
The coverage of this kind of network is very extensive, and the coverage of the blind area can be increased through continuous networking, and finally make and receive calls anytime and anywhere.
And when the person holding the mobile phone is moving, another problem is involved. The signal he starts is transmitted at one base station, and the next signal is transmitted at another base station. When he is between two base stations When moving back and forth, this signal cannot be interrupted, otherwise the call quality will decrease.
The two took the phone to make a call. What if it happened to be the base station switching when it came to the most critical moment?
For mobile communications, the ability to switch between base stations is the most important.
This is only a portable and beautiful mobile phone, which is just one step. How to provide high-quality calls is what impresses consumers the most.
Now, Qin Guan mentioned this aspect, and this stunned Karl.
"Mr Qin, I don't understand what you mean." Carl said.
Don't understand? Qin Guan’s face was smiling: "General Manager Carl, I mean, if you want to test the quality of our system, at least you need to deploy enough base stations in a city to build a network. If you want to test it directly with my equipment, it is unscientific. It is impossible to judge whether it is good or bad."
But then, the price is too high! Carl secretly thought in his mind that it would not cost much to borrow this set of equipment, but if the network was built in the entire city, the cost would be high, which is not something that ordinary companies can afford!
Is it worth paying so much for such a breath? I'm afraid we have to invest the entire company's working capital.
Carl began to hesitate.
"I know you don't understand." Qin Guan said: "You are really a layman in this regard, but you are not to blame. Now, except for us, no one is aware of this problem. The Motorola mobile phone has never Considered this question."
Hearing what Qin Guan said, Carlton was overjoyed, he had found a way to defeat Solo!
Carl really trusts Qin Guan’s mobile phone. He can tell all these technical issues, which is enough to show that their company’s research is very in-depth. At the same time, such an explanation is justified. This switching issue, It should be the most critical.
Since the Motorola mobile phone has not been considered, it seems that this aspect is definitely not good. When you compare later, you can get the crushing effect. That's right, that's it!
Carl was very proud to think of this in his heart, but he also thought that if Qin Guan said that if he wanted to build a network, he would have to build a network in the entire city. Such a cost would be astronomical!
In fact, it’s good to say now. After all, the public doesn’t feel much about the so-called radiation. In the future generations, everyone will talk about the discoloration of radiation. If a base station antenna is set up at their door, there will be countless food and support Those who had nothing to do began to protest.
As long as someone encourages them, they will protest, and the purpose is very clear, that is to get the base station away. They are afraid of being radiated, but when the base station is removed, they will protest against the poor signal of their mobile phones.
Now, no one has this consciousness.
"President Qin, if we build a network of about 100 kilometers on our intercontinental highway, how many base stations would we need?" Karl asked Qin Guan.
In the urban area, where every inch of land is expensive, to find a place to install an antenna requires approval and cumbersome procedures. In contrast, if you are on an intercontinental highway, it will be much easier there!
Moreover, mobile phones are most needed there, because there are no phones at all!
Hearing the other party's proposal, Qin Guan also nodded. As expected, he was in the role of the general manager of a communications company. His mind was extremely flexible. He thought of a solution so quickly.
Originally, when Qin Guan suppressed it in this way, he wanted to roll out the system directly in their capital, so that in the future, they would definitely build a network across the country and use their own systems. When they were upgraded later, they would also have to turn to their own. In this way, they completely occupy their market, and others cannot intervene in.
But now, the other party thinks of the intercontinental highway. If this is the case, then simply agree.
"This is okay." Qin Guan said, "For a hundred kilometers, at least five are needed."
How far a base station can cover is a general question. In later cities, it is rare to see mobile base stations with high towers, because most base stations are cell-based.
In urban areas, due to the high traffic volume and many base stations, in order to prevent mutual interference between base stations and saturation of the capacity of a single base station, the design coverage distance is generally about 100-200 meters, and many even directly install signal boosters in the corridors. Up. (Look at the corridor of your own home, if there are things like mushroom heads, that's it.)
In the suburbs, because the traffic volume is relatively small, the coverage distance of a single base station is longer, generally covering a radius of about 3 kilometers. As for the base stations of those large iron towers, in theory a GSM base station can cover 35 kilometers.
Five arrangements are enough for use.