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“Everyone, the exciting time has come. Today is the great time to verify the practical application of our CDMA network!” In the Conference Hall of a building hotel in Hong Kong and Hong Kong, dozens of foreigners, some local officials, and some The local reporters showed excitement on their faces.

These dozens of foreigners are technicians from the Qualcomm Group in the United States. In addition, Irving Jacobs, the chairman of the Qualcomm Group, today is an extremely important day for the Qualcomm Group, because the Qualcomm Group has painstakingly developed a full 4 years of CDMA On this day, the communication network is finally about to start regional experiments.

CDMA communication network is a wireless mobile communication network based on CDMA technology, that is, a mobile phone communication network.

Simply put, it is a mobile phone signal based on a CDMA signal.

Qualcomm deployed 18 signal transmitters throughout the port in a month, basically covering the entire Causeway Bay area.

The purpose of the experiment is to verify whether the CDMA network can operate normally and how stable it is.

The test method is also very simple. The Qualcomm Group arranged a total of more than 200 staff with CDMA network chip mobile phones, distributed them in various locations in Causeway Bay, and then asked them to call each other, as long as the voice of the two parties can be maintained. If it is highly stable and can carry out certain high-capacity signal transmission at the same time, even if the CDMA network operation experiment is successful, the CDMA network will also be approved by the Ministry of Information Industry of the United States and formally obtained the qualification for market operation.

This is undoubtedly extremely important for Qualcomm. As long as the experiment at this time is passed, then CDMA can obtain a permit to enter the market, and the CDMA network can also be proven to be a network that can be used in reality.

More importantly, they have negotiated with relevant officials of Hong Kong and Hong Kong. As long as the experiment at this time is passed, Hong Kong and Hong Kong will become the first region in the world to install CDMA communication networks. Qualcomm’s first CDMA business is also It’s settled.

Qualcomm has painstakingly studied the technology for 4 years to realize the realization, instead of continuously burning investors’ money like the previous 6 years.

Simply put, as long as the experiment is successful, Qualcomm can make money.

So at this moment, the entire Qualcomm Group is very excited.

“Chairman, it’s 9 o’clock in the morning, time is up!” Irving Jacobs’s Secretary reminded in a low voice, Irving Jacobs was nodded of ruddy complexion, and at the same time said to a dozen technicians, “Start CDMA signal base station!”

“Yes! Start the CDMA signal base station!!” A dozen technicians pressed the buttons in their hands at the same time. The whole scene can be said to be very sci-fi, as if the base station several kilometers or even ten kilometers away can be controlled by this button.

But in fact, Qualcomm Group staff have long been there near the power controllers of these base stations, and they don’t need to wait for the phone.

They just looked at the watch and waited until 9:00 to power on the base stations at the same time, and then the 18 base stations began to work.

“Chairman, please call the experimenter!” Secretary said excitedly, while Irving Jacobs waved his hand, handing over the phone to an official at the port and said, “Let Mr. Lin come first, you Come to make this first call. This is the first mobile phone broadcast over the CDMA network in the history of the world!”

“Okay!” This Mr. Lin blushed, thinking that he might record the history of mankind because of this call, he was very excited to pick up the phone in Irving Jacobs’s hand.

“There are 200 different phone numbers written here, you only need to enter one of them, and you can talk to any of the 200 experimenters!” Irving Jacobs took out a densely packed phone The number file was given to Irving Jacobs.

With later generations, phone numbers with more than 10 digits will not work. The phone numbers on this document are all 4-digit phone numbers. This is really the first batch of mobile phone numbers based on CDMA in the world!

“2233!” Excited, this Mr. Lin dialed one of the most interesting numbers.

“Du!” With a familiar sound, the phone was successfully dialed, and the faces of other people around suddenly showed extremely expectant expressions, looking forward to the moment the experimenter on the other end of the phone connected the call.

But the problem is that the phone rang such a beep, and then there was no sound, and finally there was even a zhi zhi zhi electric current from the microphone.

“It’s okay…it takes a while to connect the signal at first…” Irving Jacobs’s expression became a little stiff, but he explained forcibly, but after waiting for a full minute, no sound came out, except for Tzzzzzzz The sound of electric current became louder.

“Damn it, this is because the mobile phone can’t connect to the base station at all. Is there a signal reception problem?” Irving Jacobs, as the technical chairman, is naturally very clear about the equipment he has personally researched, as long as he hears the sound from the phone , He can judge where the problem is.

“Sorry, there may be a problem with base station 12, I will send someone to repair it!” Irving Jacobs said quickly, and then took out the walkie-talkie with an iron face, adjusted the channel, and issued an order to the staff in charge of base station 12. Order them to repair and adjust the base station immediately.

“Yes! Let’s go!” The staff stationed at base station No. 12 immediately rushed to the top floor, disassembled the base station directly, and started to concentrate attention completely to find the base station problem.

At this time, the security guard standing at the entrance of the top floor, staring at the flag at the top of the Golden Dragon Building in the distance, suddenly discovered that the color of the flag had changed from green to red.

So he reached into his toolkit and closed the switch that had been opened.

“What should I do? No problem can be found!”

“Yes! There is no problem!”

The two maintenance engineers searched for a long time but did not find any problems. They could only unplug the power supply, restart the base station, and then gave Irving Jacobs a reply, asking them to try again.

“Then let’s try again!” Irving Jacobs said with a stiff expression. The Mr. Lin was also embarrassed and dialed the phone again, but this time it seemed that it was really repaired. The call was successfully dialed, alone. His voice came from the phone, and he complained, “Why did you call me so long? It’s ten minutes late!”

Irving Jacobs didn’t get angry with the experimenter, because he was long relaxed, it seemed that it was just a small problem, and now he finally succeeded.

And this Mr. Lin also started a conversation with the experimenter and asked him about his situation. When everything was getting better, Irving Jacobs not at all found that the flag on the top of the Golden Dragon building not far away changed from red to red. Up green.

Then zhi zhi zhi uttered, and the call was still going on smoothly just now, and the call was immediately hung up, and it became zhi zhi zhi unable to connect again.

Irving Jacobs’s face was green, and at this time, the staff responsible for communicating with 200 experimenters using walkie-talkies sent a report saying that some of the experimenters could actually connect to the phone, and most of the experimenters Can not get through.

“Go and fix it, fix the base station for me quickly!” Irving Jacobs said grumpily. The engineers under his hand had to repair the base station again. As a result, some base stations returned to normal, but some base stations failed to work, and some base stations. Stop and stop.

All in all, the performance of the CDMA network is extremely unstable, and various disconnections and disconnections, as well as signal failures, occur from time to time. The entire network is in an unworkable state about half of the time.

By the way, many times engineers can’t find out the problem, but generally as long as the power is restarted, the machine can temporarily recover, but after a period of time, the problem will reappear.

In the eyes of professionals, it is entirely because the communication base station and CDMA communication technology network itself is very unstable, and the internal circuit design is unscientific, and various electronic components are not matched. , After a while it fails again.

This set of equipment is full of technical defects and cannot afford the communication tasks of a big city.

“Mr. Jacob, it’s getting late, we have other work to be busy, so let’s go first!” Mr. Lin said apologetically, and then left directly with a ticket of government officials. The reporters flashed their flashes frantically and took pictures constantly, together with the gray face of the president of Qualcomm, they also took a clear picture.


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