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That's right! The old man's heart set off a monstrous wave!

The Internet era has come, the 21st century will undoubtedly be the century of the Internet, China is a big country, as a big country, as a rising power, in the Internet era even does not have its own voice and standard-setting power, this is simply unimaginable.

"When I first went to college, I was more interested in network technology," Lin Zheng said with a shy smile on his face, "At that time, the International Institute of Electrical and Electronics Engineers (IEEE) developed the first generation of commercial wireless LANs, and it was officially put into use this year." ”

Old man Tan nodded, Lin Zheng said this, of course he knows, this year, the international use of 9oomhz wireless LAN officially started commercial operation, but this project is not so much as a commercial project, it is better to be considered a demonstration project to show wireless LAN technology, although the project has been completed, but limited to cost, reliability and versatility and other reasons, this wireless LAN technology has been in a situation of applause, so that the International Institute of Electrical and Electronics Engineers is very embarrassed.

"In my opinion, although the performance of this network is unstable, the transmission rate is low, and the network equipment from different standards is difficult to be compatible with each other, and the future upgrade is still a trouble, but despite all kinds of problems, the advantages of this system have also emerged, it can be said that the advantages are far more than the disadvantages, and the future prospects are very promising, but there is a very strict problem."

"Oh?" Old Professor Tan raised his eyebrows.

"The International Organization for Standardization has joined hands with the International Institute of Electrical and Electronics Engineers (IEEE) to start the specification construction and standard formulation of wireless LAN standards, once the International Organization for Standardization and the International Institute of Electrical and Electronics Engineers (IEEE) have this set of specifications and standards in their hands, we Chinese estimated that we will have no say at all in the network era...... We all know that standing behind the International Institute of Electrical and Electronics Engineers is actually the Americans, and being mastered by the International Institute of Electrical and Electronics Engineers (IEEE) is equivalent to being mastered by the Americans this set of standards and specifications. ”

"My idea is that it is not only time-consuming and laborious to develop a system and relevant protocols for civil systems, but we must participate in the development of wireless LAN technology planning and standards for the International Organization for Standardization and the Institute of Electrical and Electronics Engineers, even if we can't master all the standards...... As long as we master the standards of the Internet era, after 1o years after China has truly entered the era of the Internet Exhibition, it is conservatively estimated that I can save billions of dollars for our country a year. ”

"There is a good saying during World War II, 'art has no borders, but artists do have borders', I believe that the IEEE said that they will share the wireless LAN technology for free, then they will share it for free, but the IEEE is borderless, but the electrical and electronics engineers in the IEEE have national borders, even if the International Institute of Electrical and Electronics Engineers is really willing to share their wireless LAN technology for free, but the United States, Europe and many other powerful countries behind it are really willing to share all the technology for free、Design to the information disclosure? ”

"If they do something in the router chip, the public network will become a one-way transparent thing to them, and I think we should do something for the sake of our country, for the security of our country." Speaking of affection, Lin Zheng's eyes were a little red.

The old man also became silent.

Of course, he knows that Lin Zheng is telling the truth, the level and strength of domestic chip research and manufacturing are extremely weak, and there is no ability to research and manufacture chips for this kind of network products.

If it is a small and medium-sized country, the basic characteristics of the country determine that they can only rely on the strong, but the republic is different from all their other countries, as a large country with 960,000 square kilometers of land, more than 18ooo kilometers of coastline and the world's largest population, China must have its own voice and standard-setting power in the Internet era.

After being silent for a while, the old man finally spoke slowly, his tone extremely solemn, "How much do you know about Lan technology?" ”

There is no doubt that it is important to grasp the right to speak and patent rights of the network, and in this matter, it is not impossible for the University of Science and Technology of China to support Lin Zheng, but first, the old man needs to determine Lin Zheng's mastery of wireless LAN technology.

Although Lin Zheng is his own student, he has no doubts about Lin Zheng's level, but Lan technology is not something in the textbooks of USTC, and USTC does not have these things, and he is skeptical about how much knowledge Lin Zheng has about wireless LAN, let alone come up with a framework of wireless LAN technology based on this knowledge.

"Wireless LAN is based on computer network and wireless communication technology, in the computer's osI network model, wireless LAN technology is mainly aimed at the lowest physical layer and the upper digital link layer, the logical link control layer and the application layer above the requirements for different physical layers can be the same, can also be different, therefore, after the architecture and standard design of the wireless LAN, mainly for the physical layer and the number of link layer in the media access wèn control layer, That is, MAC is OK, and after clarifying this, we can determine that wireless LAN technology mainly involves the wireless frequency range used in it, air interface communication protocols and other technical specifications and technical standards. ”

"Not bad." The old man nodded, and was not surprised by Lin Zheng's answer, if the top students of the University of Science and Technology in the hall can't even answer this point, then they can only wonder if this kid has been messing around in the past few years.

"I learned about the wireless LAN standard that the Institute of Electrical and Electronics Engineers is now developing, in my opinion, the standard they have developed is not very ideal, or too idealistic, the original intention of the design is mainly to solve the wireless access between users and user terminals in the office LAN and campus network, and the service is mainly limited to a few visits, as if the highest rate can only reach 2Mbps."

"Not only is this degree too slow, the transmission distance is not ideal, teacher, I am not optimistic about this standard, I think this standard should be replaced soon, in the case of the same working frequency band, the use of FM spread spectrum technology and direct sequence spread spectrum technology, the number of Jù transmission rate increased to 11Mbps, the transmission distance increased to 5O to 15O meters."

"In terms of the transmission rate, the transmission rate must be automatically switched between different rates according to the actual situation, so as to maximize the application field of LAN, in addition to the encryption format and authentication mechanism must also be strictly defined to improve security."

Of course, Lin Zheng's words are not nonsense, the wireless LAN standard originally formulated by the International Institute of Electrical and Electronics Engineers is probably the shortest wireless LAN standard alive, because it can not meet people's needs in terms of rate and transmission distance, the standard has been replaced by just two years of effort, and the short life is pointed.

"Based on these, I have written a framework for the technology exhibition according to some of the information I have learned in the past few years, which has just been written recently, and I have repeatedly analyzed it, it should be feasible, teacher, you can help me take a look." Lin Zheng said, respectfully handing a stack of thick materials to Tan Lao.

It's the thickness of a pack of copy paper.

"You wrote all this?" Looking at this thick stack of information, Mr. Tan Xingjian was taken aback, and his eyes were red.

When Lin Zheng said that he had some ideas about wireless LAN, he thought that it would be one or twenty sheets of paper at most, but looking at the stack of materials printed in a standard small five-point font in his hand, Mr. Tan only felt that his hands were trembling.

Thinking of the huge difficulties faced by Lin Zheng and their company during this time, the old gentleman's heart ached, how did he squeeze out the time to write these things?

"Yes, Xiao Na also helped me find a lot of information," Lin Zheng was happy like a child, "Actually, I don't know if this thing is useful or not, but I think that even if it is just to let the country pay a little attention to our online exhibition, this information can be regarded as having its proper role." ”

Old Professor Tan didn't look at it, he turned around and went out to get a thick file bag back, carefully packed these materials into the file bag, and patted Lin Zheng's shoulder hard, "Boy, if you don't plan to do business, I have to be your mentor for anything...... It's a pity that such a seedling. ”

Although he didn't read the information written by Lin Zheng, but based on what Lin Zheng just said, the old man dared to conclude that Lin Zheng's stack of materials was definitely not an empty thing, as this kid's teacher, he couldn't watch his students' hard work being wasted, so he would go on a night train tonight, and he must have a general understanding and judgment of this information.

Panasonic and Sony? It's just an itch for scabies.

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ps: I have to hang a day's water tomorrow, once in the morning and once in the afternoon, ** not pretty...... Wrong, it's a middle-aged fat nurse, sad and urging