The technology content of Big Brother's mobile phone itself is not high, the most important thing is the antenna and dozens of circuit boards, these problems can be solved by Li Mianhua, but Big Brother must have his receiving channel if he wants to operate.

The propagation channel of Motorola Big Brother is very similar to the propagation path of a digital pager, a processing center, and the peripheral base station can flexibly allocate channels to each handheld terminal according to the signal strength, allowing the same frequencies to be multiplexed in completely different locations without interference. This makes it possible to support a large number of handheld terminals simultaneously within a region

The operation mode of the system such as Big Brother wireless communication is like a small hexagonal "cellular" shape, so it is also called the cellular telephone system standard.

The first generation of mobile communications in the cellular telephone system mainly used analog technology and frequency division multiple access (FDMA) technology. Due to the limitation of transmission bandwidth, although long-distance roaming of mobile communication is not possible, mobile communication can be carried out in a certain area.

In order to accommodate a large number of subscribers, a cellular telephone system can divide a geographical area into many cells. Instead of using a single high-power transmitter, each cell is served by a small-power base station. Because these base stations are limited in their reach, the same spectrum can be reused in another cell at a distance away. The reuse of frequencies and the operation of handoff form the main body of the cell (cellular) concept.

Li Mianhua doesn't want Tianyi to produce Big Brother now, that's too unrealistic, Motorola hasn't mass-produced this product yet, not to mention Chen Yihua's Tianyi, Li Mianhua just wants to get Big Brother's transmission channel up first, and wants to establish a cellular phone system first.

The base station is an important carrier of the cellular system, the pager wants to be numerized, the base station needs to be upgraded, and the big brother wants to run, its base station must become a small processing center, Zhao Mianhua means that he wants to make the pager peripheral base station in place, relying on the pager this peripheral base station upgrade, the big brother mobile communication channel is also up, so that these peripheral base stations can not only allow it to carry out digital transmission of pagers, but also establish wireless telephone communication channels.

Chen Yihua also agreed with Li Mianhua's point of view, although now the big brother mobile phone is not mature, can not effectively operate in the market, but you can first establish a cellular system, pager numerization is not in a hurry, the upgrade of the peripheral base station can wait for a while, after all, now Tianyi pager has no competitors, not in a hurry, if the cellular system and the base station can be carried out at the same time, then it can undoubtedly save Chen Yihua a lot of money.

Tianyi wants to develop a long-term vision, the company wants to grow can not only have one product, Chen Yihua has the memory of later generations, of course, he knows that pagers are destined to be eliminated in the future, and Big Brother Mobile Communications is the future of this kind of products.

Although the company has no plan to produce Big Brother now, it is a waste of money to build a communication base station in advance, but Tianyi Company will definitely engage in Big Brother in the future, so it should be prepared for the future in advance, Tianyi now solves the most important channel problem of Big Brother, and when the time comes, as long as the product of Big Brother in the United States is mature, Tianyi only needs to assemble the big brother in the United States, and this product can be successfully introduced to the market.

"Lao Li, I remember you told me that many devices of the cellular phone system need to be imported from Motorola, and the mobile phone has not yet been launched in the United States, and Motorola will definitely not be able to cooperate with us on this project, do we have the ability to get this base station out ourselves?"

If the communication channel of mobile phone and digital pager can be solved at one time, of course, Chen Yihua will not agree, and he is not without money, but the base station of cellular phone is not something that can be done by talking about it, and it requires a lot of hardware and software facilities, Hong Kong must not have it, those equipment needs to be imported in the United States, and many equipment are unique to Motorola, it is impossible for them to tell Chen Yihua about the technology they are developing, and it is impossible to export these confidential equipment. Therefore, Chen Yihua was very worried about whether Li Mianhua would be able to develop a cellular telephone system during this period.

"Boss, the most confidential equipment for building a cellular phone system is the computer transmitter terminal, these are the places where Motorola is ahead of others, and some other important wireless receiving devices can be obtained from other companies in the United States, we have the support of Apple, plus we have developed our own numerical transmission technology, even if we leave Motorola, we can do it, but our computer receiving terminal also needs a set of AMPS-1D operating software, This operating software is an important part of the cellular phone system'

"Has the AMPS-1D operation software been developed, can't we make it ourselves?" Chen Yihua didn't understand anything too professional, he just wanted to think about whether he could buy this software, or whether he could develop it.

Hearing Chen Yihua's question, Zhao Mianhua handed over this question to Zhang Youfang, an expert in software, in fact, before Chen Yihua came, the engineers in the R&D team of Tianyi Company had already discussed this issue.

"Boss, if we want to develop a set of operating software similar to AMPS-1D, it is not impossible, but it will take time, so the overall construction of the cellular phone system will be delayed a lot."

"So which company developed this operating software, is it Motorola?"

'Boss, it wasn't developed by Motorola, AMPS was developed by Professor Stephen Fonash in collaboration with his students and visiting scholars at the institute, and the project was done with the support of the Electrical Power Research Institute, and we just need to get a patent for the software to use the software of the institute'

"Oh, yes, in this case, Anna, you contact Li Xiujing, first see if she can get the authorization letter for this software, if not, let her find the team that developed this software, and then take some time, we will develop our own operating software similar to AMPS-1D."

Chen Yihua subconsciously breathed a sigh of relief when he heard that the technical source of this set of software did not come from Motorola, and it was the achievements of the research institute that also made things much easier, and many of the achievements of some research institutes in the United States would be traded for commercial use, of course, some important technologies would definitely not be passed on, as long as they did not involve operating software such as arms and satellites, and most software patents, the research institute would not prohibit transactions.

Chen Yihua basically agreed with Li Mianhua's opinion in the office, and the next research direction of Tianyi Company is mainly focused on the construction of cellular telephone system and telecom peripheral base stations, hoping that the company's peripheral base stations can carry out numerical transmission and mobile communication transmission at the same time.

"Friend, can the Hanzi code we developed now be used on the computer" Seeing that the matter of the peripheral base station was almost explained, Chen Yihua turned the topic back to the Chinese software.

"Boss, what do you mean" Chen Yihua said so generally, Zhang Youfang didn't react for a while to what he meant.

"I want to ask you, can you write a set of computer Chinese character input method software according to this set of Chinese character encoding?"

Zhang Youfang's eyes lit up unconsciously when he heard Chen Yihua say this, and even the expressions of the other three researchers sitting in the office were also very excited, most of these engineers of Tianyi Company know the knowledge of computer software, and now the computers are all English software, although the Chinese version of the pager software developed by Tianyi Company is used on the pager receiving terminal, but strictly speaking, it is also the first set of Chinese version software.

"Boss,Yes,But the Chinese character source code of our current software is not comprehensive,If you get a set of Chinese character input method software, it will take a little more time."

Zhang Youfang's expression was very excited, they developed a Chinese character pager according to Chen Yihua's requirements, and they didn't expect to use this achievement on the computer for a while, a set of software has interoperability in many aspects and many places, if it is based on Chen Yihua's ideas, the computer can be completely Chinese.

Anna has been listening to the conversation between Chen Yihua and those engineers on the side, managing Tianyi for so long, she knows more than Chen Yihua in some aspects, of course, it is impossible not to know the meaning of what Chen Yihua just said, "Boss, if you can make a Chinese character input method, does it mean that the time has come for our Tianyi company to enter the computer market?"

Anna looked at Chen Yihua with bright eyes, waiting for the other party's answer, in fact, Tianyi Company has begun to assemble computers now, Chen Yihua's three companies have digested no less than a hundred computers, from Apple's side of the accessories are very complete, it is not difficult to assemble a set of computers, Anna did not come to Tianyi to help Chen Yihua take care of Apple in the United States, of course, he knows the huge market for computers, but Chen Yihua has always said that the timing is not right, so Tianyi stopped the project.

Chen Yihua pondered for a moment, and then said, "Anna, now Tianyi's movement is too big, wait for a while, and wait until the company officially develops the Chinese character input method, and then we will consider this problem."

After a pause, Chen Yihua ignored Anna's dim gaze, and then said to Zhang Youfang, "Youfang, according to the steps of Chinese software development, can we develop software in Japanese and Korean in some other languages?"

'Yes, but we need someone who understands the language'

Chen Yihua is not in a hurry to produce computers, but is in a hurry to develop language software in other countries, with the experience of developing Chinese version of software, Tianyi wants to develop software in other languages is a very simple thing, Chen Yihua wants to take advantage of others have not yet reacted, preemptively develop the input method of the world's important languages, when the time comes, these input method patents are registered, with such a patent in hand, Tianyi wants to be a thousand generations is not a dream.