Rewrite the Technological Landscape

At the end of November, Meng Qian received an invitation letter to attend a conference in Yanjing. WiMax has recently been aroused by companies such as Intel. It is impossible for China to not respond. Different companies, different roles, different experts, and different Great leaders also have their own ideas.

So at the end of November, the Ministry of Science and Technology, the Ministry of Information Industry, the National Development and Reform Commission, and the three departments jointly held a meeting, and convened the current domestic five major operators, representatives of more than ten enterprises, and more than ten relevant experts to discuss WiMax. matter.

At the meeting site, Meng Qian found that the controversy was very great.

First of all, the five major operators, because the needs of the five operators are actually different at this time, so the requirements for WiMAX technology are also different.

Judging from today's statement, China Telecom, China Netcom, and China Railcom are all supporters, especially China Railcom, because China Railcom only has broadband business and no mobile network business, so China Railcom wants to rely on WiMAX to enter the market.

China Unicom, which uses the European 3G standard, and China Mobile, which uses the China 3G standard, are not interested in WiMAX.

Meng Qian listened quietly on the side without saying a word. All the ideas on the operator's side are actually from the perspective of their own profit.

Knowing the attitudes of the five major operators, the leaders began to ask the experts for their opinions. Similarly, the expert group had great differences.

One group is represented by Ms. Cao Shumin, a great expert in the field of Huaxia Communications. They are not optimistic about WiMAX.

Ms. Cao Shumin said, "From the perspective of the technology itself, WiMAX technology seems to be quite mature, but if you want to develop WiMAX as 4G, it is not mature at all, and even the basic specifications cannot be implemented. Rights, billing, operation and other supporting facilities.

China Netcom has conducted WiMAX technical experiments, and it should be very clear that after the entire WiMAX project, there is not even a set of basic solutions. "

Another faction immediately objected, "You say that WiMAX is not 4G, so how can you explain that 3GPP's LTE puts forward corresponding requirements for low-mobility broadband access, including similar bandwidth, data rate, and spectral efficiency indicators, and low-mobility optimize etc.

Moreover, we can see that the technical route of LTE is actually very similar to that of WiMAX. In terms of wireless interface, SC-FDMA is used for uplink and OFDMA is used for downlink. In terms of network structure, NodeB is directly connected to the packet network, simplifying network hierarchy etc.

We, China, are currently promoting the TD-CDM-OFDM solution, but currently our solution is difficult to overcome in Europe. In this case, why don't we directly choose WiMAX, which may be commercially available on a large scale next year? "

Cao Shumin continued to retort, "Because WiMAX is essentially an access technology that can provide ultra-high-speed mobile Internet services, it is impossible to become 4G. What is 4G? If you follow the cognition of 3G, it should be the fourth generation Mobile communication technology. That being the case, the revolutionary significance of 4G cannot and should not only be reflected in the access layer, but should also be reflected in the breakthrough of comprehensive technical systems such as switching, control, business and QOS.

This is the biggest difference between 3G and 2G. If it is said that in a certain communication technology, there is only an innovation in the access level compared with 3G, I cannot accept that this is the next generation of mobile communication technology.

This is the technical white paper of WiMAX, and all the content is aimed at how to solve the problem of wireless high-speed data access at the access layer. As for how to route and control the data after it goes up, WiMAX does not handle it.

By the way, a very practical question, from the perspective of our domestic development, the frequency bands allocated to WiMAX in the world are generally 2.5GHz and 3.5GHz. And these frequency bands have been allocated in the country. . "

Meng Qian actually agrees with Cao Shumin's point of view, but he did not convince the other side, "WiMAX's current foothold is indeed based on access, but what we want to see is the future.

We must know that WiMAX has a lot of room for development. First of all, it has better broadband mobility in a wider range and has a strong ability to provide mobile broadband data services, which will definitely bring better experience to mobile users. , thereby stimulating the development and improvement of the network.

Moreover, WiMAX can be applied in the last 1 kilometer connection, network backhaul and private network, etc., which can well solve the problem of low-cost broadband access in remote areas. Adopting WiMAX technology to realize broadband coverage of wireless access in the metropolitan area can rapidly expand the user base, improve the level of information services and applications, and will play a huge role in promoting the comprehensive informatization of our country. "

The two sides had been arguing for a long time, and everyone was very firm in their views. The leader had to interrupt first, and turned his attention to the enterprise, allowing the entrepreneurs to talk about their ideas.

As a result, Hou Weigui and Ren Zhengfei were unusually low-key today, and they turned their heads to look at Meng Qian tacitly.

Meng Qian smiled at the two of them, and turned to look at Wang Jianzhou, the general manager of the China Mobile Group, "Has Intel been to China Mobile recently?"

"Just came here not long ago."

"Is he trying to get Mobile into the WiMAX camp?"

Wang Jianzhou was stunned for a moment. Intel did say this when they came here not long ago, but they haven’t told anyone about it. No one should know about this except the leader. Wang Jianzhou subconsciously looked at the leader and made eye contact. After finishing, he asked, "How does Boss Meng know?"

"I guess." Meng Qian smiled, "Intel said at a press conference yesterday that Huaxia's TD-SCDMA can switch to WiMAX, and it thinks this is a very good development direction that can help us Huaxia quickly broke through the bottleneck of network construction. Reminiscent of Intel’s visit to China Mobile a few days ago, I probably guessed why they came to China Mobile.”

Wang Jianzhou suddenly said confidently, "But we will not give up our own standards."

"Of course we can't give up our own standards, otherwise we companies who have worked so hard to develop 4G will not be wronged." Meng Qian said half-jokingly, "Everyone knows that LTE has been developed for the past two years. The prospect of 4G in the future actually has a more mature concept than the past, that is, OFDMA can also solve co-frequency multiplexing. Everyone is more inclined to use OFDMA as the basis of 4G, and its purpose is naturally to avoid Qualcomm tax.

After all, even companies in the United States are eager to kill Qualcomm. Coupled with the research and development of 4G by our Dafeng Group over the years, we can basically be sure that the future 4G will not be an extension of 3G to a large extent, but more likely a different kind. A new communication technology based on 3G.

And judging from the current development of LET, everyone has begun to have more and more consensus on the main technologies of 4G in the future, but there is one technology that it is difficult for us to reach a consensus with Omi, that is, TDD and FDD, that is, time division duplex or frequency division duplex.

Maybe it's because our Huaxia's performance on 3G is really unsatisfactory. FDD has obviously received more attention now, but if we Huaxia want to have our own 4G standard, if we want our 4G to no longer be as poor as 3G If so, we have to find a way to promote the coverage of TDD technology.

So if you want to ask whether I support WiMAX, my thinking is, Intel said that TD-SCDMA can switch to WiMAX, so if I reverse this order, is it also true?

It seems that WiMAX can also turn to TD-SCDMA, and if WiMAX wants to turn, it seems that this is the only way to go. "

After the failure of WiMAX in the United States that year, it helped China a lot by mistake. When everyone wanted to turn around, they found that the best transfer direction of WiMAX was China's TD-LTE.

As a result, Huaxia took advantage of the failure of WiMAX to increase its 4G market share. Maybe it really has a certain element of luck.

But at the scene at this time, it is still difficult for everyone to accept this statement. Several experts at the scene hesitated to speak, and they swallowed their words in a daze. From the current perspective, everyone thinks what Meng Qian said is true It's crazy, this is asking the United States to make a wedding dress for China. Meng Qian actually said this when the United States was just getting ready to launch WiMAX. What was he thinking?

In the end, some experts couldn't help but hate Meng Qian, saying that he was simply whimsical.

Meng Qian smiled indifferently, "Of course, what I'm talking about is just a possibility for everyone to learn from."

After finishing speaking, Meng Qian looked at the leader, but seeing Meng Qian's expression, the leader unconsciously had some strange thoughts in his heart.

None of the experts present had any past dealings with Meng Qian, but the few leaders who came today had dealt with Meng Qian several times.

Although this view is crazy, but the person who said this is Meng Qian.

In response, a friend said that the system can be sold for money. As I said before, the Kunlun system is a semi-closed system, so what this system violates is not free, but the open source principle of freedom. If I use it on my own products, I can say that I developed it for myself, so that I can exploit the loopholes in the GPL agreement, and cooperate with a capable lawyer team, the problem will not be too big, but the Kunlun system cannot make profits. It really violates the GPL agreement and the principle of freedom. In fact, this matter has been clearly stated in the book before, maybe it has been forgotten after a while? In addition, I still want to say something, because my company used the Red Hat system before, and it happened that I connected it. So the Red Hat system really cannot be said to sell the system for profit, but to sell services, including the logic of his sales. The system charges for free services, and charges for the services provided after using their system. Of course, the most important thing is that the code of the Red Hat system itself is open source, but they not only do a good job in the system, but also do a good job in supporting services, so that they can make money from the service, so if the Kunlun system uses Red Hat The route can indeed make money, but the problem is that the semi-closed route cannot make money.