Soon, Ling Shizhe explained to everyone: "The content of the diagram shows that the meaning is very simple, a large tower representing the macro base station transmits the signal to a distance, but the mountain or building blocks the transmission of the signal, and in the anticline or shadow, the signal becomes nothing. At this time, a satellite pot is set up on the top of the mountain, and the signal of the macro base station is amplified and radiated to the anticline. Or the same satellite pot is set up on the roof of the building, and then the amplified signal is transmitted indoors. ”

This diagram is very simple, and the meaning expressed is also very simple and clear - this is the repeater technology that has gradually matured after 2004, before that, the repeater technology was relatively rough, the equipment was large, the power was relatively low, the coverage area was small, and the call quality was not clear......

Of course, due to the limitations of current hardware technology, the repeater technology displayed by Ling Shizhe can only be a supplement to the base station networking, and it is far from the bullish spirit of the repeater as one of the three base stations in the future.

However, in the design of the indoor repeater, he introduced a design that only matured in 2004, that is, the indoor gain antenna.

When mobile phones were just popularized, there were signal dead spots in many places. For example, an underground parking lot, such as an elevator, or an alley between two high-rise buildings, or even in a high-rise building, multiple signals of similar strength interfering with each other, can make people's mobile phones inexplicably unable to receive the signal.

However, in the 21st century, people will gradually find that there are fewer and fewer dead ends. There is a signal in the parking lot. The elevator is covered, not to mention the open-air alley. As for those tall buildings, it is even less likely that there will be signal interference.

What is the reason for this? Could it be that those telecommunications companies detected all the signal dead spots and set up base stations for them? Of course not.

There are thousands of similar dead spots in the city. It's hard to get full coverage. However, the emergence of small things such as indoor gain antennas has solved the big problem of indoor signal coverage.

An indoor gain antenna is only a hundred dollars, but it can provide full coverage of signal broadcasting without dead angles for a floor. Why is it possible to achieve such an effect? It is the indoor gain antenna and the repeater that amplifies the signal of the macro base station work together.

In the past, whether it was PHS or PHS, whether you were GSM or CDMA. Something that can only be done by increasing the number and power of base stations and repeaters, with this technology, it is enough to add so-called "cheap" gain antennas. The savings are already considerable.

The principle of the indoor gain antenna is also very simple, in fact, it is just a layer of window paper, and there is nothing magical after it is pierced. Many people in the venue saw the illustrations, and after Ling Shizhe's simple explanation, it was easy to understand the ideas inside. It's not difficult to make this thing at all, but the GSM wireless communication technology has just been proposed, and everyone hasn't thought about it yet.

Although no one thought about it. But it doesn't mean that no one can't see it, Gary is one of them, when he noticed this problem, he didn't think about it for a long time and didn't come up with a practical and effective solution, but he didn't expect that Ambrera not only came up with PHS, but also solved the problem that he had been thinking about for many years, and solved it in the simplest way.

Gary shook his head, they never expected Ambrera to be so advanced in the research of wireless communication technology.

That's right, Ling Shizhe just wants to be ahead. He knew that PHS had great limitations, and he wanted to make PHS internationally recognized in this extremely backward seventies. Then we must break the routine and use the simplest and most effective methods to solve the problems of wireless communication technology.

Indoor gain antenna and repeater technology are such amazing solutions, are these two technologies difficult? It's not difficult at all, it's just a layer of window paper, not to mention the 70s, even in the 60s, with the technology of the time, it can be easily solved.

There is no need for any different black technology. It only takes a small innovation in thinking to solve the problem that has plagued countless engineers for many years.

Of course. Ling Shizhe also didn't have a backache when he stood and talked, who told him that he came through time. In this era, the wireless communication market is still blank, and these two technologies are taken out thirty years in advance, which is naturally his, just like blade servers and solid-state drives. It's long gone, and all the products on the market are SSDs.

The time-traveler should take it as their mission to change history!

The schematic diagram of another distributed base station is also very simple, and the base station equipment that was originally put together has been split into two parts. One part is called RRU and the other part is called BBU.

In Chinese, these two abbreviations mean the remote radio unit and the baseband processing unit. Whether it is a macro base station or a micro base station. The composition is both. It's just that the RRU of the macro base station is a big tower, and the RRU of the micro base station is just an iron rod or a big tree.

In a traditional base station, the RF unit and the baseband processing unit are all made together. The base band processing unit equipment of the base station, the small one has a cabinet. The larger one may require a separate property with air conditioning. Generally speaking, they are very close to the RF unit, or simply integrated.

On the drawings shown by Ling Shizhe, the micro base station is divided into two parts. The "antenna" and "computer" are set separately on the figure. The antenna can be on the top floor of a building, on a light pole next to the road. It can appear anywhere it is needed. The computers are placed in the computer room in the center of the city, and countless lines are connected to the "antenna" from this computer room.

This setting seems to be an addition, and even reduces the efficiency of equipment operation and increases the cost of engineering construction. Because I want to connect from the radio unit to the central computer room, how to connect? Of course, it is to use the existing fixed-line communication cable, and if there are conditions in the future, it will be changed to optical fiber or optical cable. This project cost is not much more than that.

In the future, mobile telecommunications are two unrelated companies. China Mobile's bureaucrats will definitely be scolded for promoting this technology.

But in the 70s or with telcos, there was no problem. Because PHS cordless telephone technology is developed on the basis of fixed telephone, telephone lines and communication cables have long been laid in all directions. It's just another branch, what's so rare and how much does it cost? The chickens were bought. You still care about this soy sauce money!

This technology is simply so attractive! Without him, the number of properties occupied by equipment is reduced! Hypothesis. A city like New York needs more than 60,000 base stations, which means that the contractor has to negotiate more than 60,000 times with these owners to rent or buy their properties. How noble are you to be a Westerner? The nail household is full of piles, and at least half of the cost of the entire project is used on this.

But if it's just a pole, then what's there to negotiate? Many people in the venue couldn't help but laugh out loud when they thought of this, hehe. If anyone wants to make a fortune by blackmailing large corporations, it is a big deal that our antenna is moved farther away. As for the laying of the line, the backbone network has already been done, and the branch line will come over and get it!

Putting a cabinet may require a place to shelter from the wind and rain and have a power supply, but what harsh conditions do you need to put an antenna mast? It's just a personal place, whether it's renting or buying, it's definitely more than ten times cheaper.

You can even make a camouflage, tree street lights, air conditioners, water towers, windmills, solar water heaters, and even American cacti......

The camouflage of those base stations in later generations is ridiculous. But if you are dragging a complex set of baseband processing units, how can you fight wits and courage with the sharp-eyed health party!

This is also the signal coverage of Motorola's THTEA cluster base station, why there is such a domineering ultra-long distance. This is where it comes from.

The representatives of the telecom operators in the audience simply love Ling Shizhe, this is to help them save money, only these two technologies, can definitely make the entire base station network construction cost, save more than half of the cost, and not only that, the base station construction speed alone will also be doubled and doubled, this in and out. It's all money spent in vain!

The network built at such a low price has a stable coverage area and call quality. This is simply tailor-made for fixed-line telecommunications!

Above! Be sure to get on the PHS system to become an international standard. It's a must!

Bentzshan looked at the faces of the representatives sent by the telecom companies around him, one or two full of excited expressions, and shook his head a little helplessly, he knew that PHS had become an international standard, and there was no controversy, and now the key was how big the appetite of the young man in the stands was, if he was too greedy and set the price too high, I think those telecom chambers of commerce would be disappointed, right?

Finally, when it came to the substance, a representative of the Dutch telecommunications company stood up and shouted: "How much do we have to pay to get PHS?" ”

Ling Shizhe waved his hand. Saini took out a huge drawing and unfolded it to everyone, which wrote all the conditions for the opening of PHS technology, including the purchase price of the equipment, a 10,000-times digital programmable switch, only $800,000, and the retail price of a PHS mobile phone, only $169......

Call! After reading it, everyone immediately breathed a sigh of relief, especially telecommunications equipment manufacturers, it is not too expensive, technology exchange to buy chips, technology sharing, etc., these are completely acceptable, especially those reporters and all the viewers in front of the TV, are very concerned about the price of PHS mobile phones, after reading it, they are also relieved, it is simply too cheap!

Not to mention anything else, the shape is too small, too beautiful, too exquisite, when it comes to the market, you must buy one for yourself and your family as soon as possible!

Can nonsense not be pretty? There are a total of three mobile phones, all of which are classic mobile phone shapes of later generations, one is the classic 6230i of Ruokia, one is Motorola's palm treasure flip phone, and the last one is based on the palm of the hand, specially designed for women Butterfly color "Women's Heart", also belongs to the flip phone, the combination of the two flip phones, is a couple machine.

The best money in the world is the money of children and women, as long as it attracts the eyes of women, men have to pay obediently, buy one for their girlfriends, and have to have one for themselves, oh, couples, one for each person...... (To be continued)