Rewrite the Technological Landscape

At the end of November, Meng Qian received an invitation letter and went to Yanjing to participate in a meeting. WiMax was recently caused by companies such as Intel. It is impossible for China to fail to respond. Different companies, different roles, different experts, and different All leaders will have their own ideas.

So at the end of November, the Ministry of Science and Technology, the Ministry of Information Industry, the Development and Reform Commission, and the three departments jointly led a meeting, convening the current five major domestic operators, more than a dozen enterprise representatives, and more than a dozen related experts to discuss WiMax. thing.

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

The first is the five major operators, because the requirements of the five operators are actually different at this time, so the requirements for WiMAX technology are also different.

From today’s statement, China Telecom, China Netcom, and China Railcom are all supportive companies, especially China Railcom, because Railcom only has broadband services and no mobile network services, so Railcom wants to rely on WiMAX for entry.

However, China Unicom, which uses the European 3G standard, and China Mobile, which uses the China 3G standard, have little interest in WiMAX.

Meng Qian listened quietly to the side, and all the ideas of the operators were actually from the perspective of their own profitability.

Knowing the attitudes of the five major operators, the leaders began to ask the experts for their opinions. Similarly, the expert group is also very divided here.

One group is represented by Ms. Cao Shumin, a great expert in the field of China Communications 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 WiMAX is to be developed as 4G, it is not mature at all, and even the basic specifications are not met. There is a serious lack of experience. Supporting rights, billing, and operation.

Netcom has done WiMAX technology trials. It should be clear that the entire WiMAX project has not even had a set of basic solutions. "

The other faction immediately raised objections, "You said WiMAX is not 4G, so how do you explain that 3GPP's LTE puts forward corresponding requirements for low-mobility broadband access, including similar bandwidth, data rate, and spectrum efficiency indicators, which are very important for low-mobility broadband access? Carry out optimization, etc.

And we can see that the technical route of LTE is actually very similar to WiMAX. In terms of wireless interfaces, 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 level, etc.

We at Huaxia are currently promoting the TD-CDM-OFDM solution, but we are currently looking at our solution and it is difficult to pass the European barrier. In that case, why don't we directly choose WiMAX which may be commercially available next year? "

Cao Shumin continued to refute, "Because WiMAX is essentially an access technology that can provide ultra-high-speed mobile Internet services, it cannot be 4G at all. What is 4G? If you follow the perception of 3G, it should be the fourth generation. Mobile communication technology. In this case, the revolutionary significance of 4G cannot and should not only be reflected in the access layer, but also in comprehensive technological system breakthroughs such as switching, control, business and QOS.

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

This is a WiMAX technical white paper, 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 data after it goes up, WiMAX does not handle it.

By the way, a very realistic problem. From the perspective of our domestic development basis, the frequency bands allocated to WiMAX internationally are generally 2.5GHz and 3.5GHz. These frequency bands have been allocated in the country. . "

Cao Shumin’s view Meng Qian actually agreed, but he did not convince the other side, “WiMAX’s current foothold is indeed based on access, but we have to look at the future.

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

Moreover, WiMAX can be applied in the last 1 km connection, network backhaul and private network, etc., which can well solve the problem of low-cost broadband access in remote areas. The use of WiMAX technology to achieve metropolitan area wireless access broadband coverage 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 were arguing for a long time, and everyone was firm in their views. The leaders had to interrupt them first and set their sights on the side of the company to let the entrepreneurs 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 in a tacit understanding.

Meng Qian smiled at the two of them, but he was not polite, and turned to look at Wang Jianzhu, general manager of China Mobile Group, "Has Intel been to China Mobile recently."

"Just been here not long ago."

"Does he want Mobile to join the WiMAX camp?"

Wang Jianzhou was stunned. Intel did say this when he came not long ago, but they haven't told anyone about it. No one except the leader knows about it. Wang Jianzhou subconsciously looks at the leader and makes eye contact. After that, he asked, "How does President Meng know?"

"I guess." Meng Qian smiled, "Intel said at a press conference yesterday that China Xia’s TD-SCDMA can be switched to WiMAX, and that it is a very good development direction that can help us Huaxia quickly broke through the bottleneck of network construction. Thinking 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 engage in 4G will not be wronged." Meng Qian said this half jokingly, "Everyone knows that LET has been in development for the past two years, everyone is right. In fact, the outlook for 4G in the future has gradually developed a more mature concept than in 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 American companies can’t wait to kill Qualcomm. Coupled with our Dafeng Group’s research and development of 4G over the years, we can basically be sure that 4G in the future will not be an extension of 3G to a large extent, but a different one. 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 we can hardly reach a consensus with Omi, that is, TDD and FDD, that is, TDD or TDD. Frequency division duplex.

Perhaps it’s because China’s performance on 3G is indeed not as good as expected. FDD is now obviously receiving greater attention, but if we at China want to have our own 4G standard, if we hope that our 4G will no longer be as sluggish as 3G. If so, we have to find a way to promote the coverage of TDD technology.

So if you want to ask me whether I support WiMAX, my thought is that Intel says that TD-SCDMA can be switched to WiMAX. Does it work if I reverse this order?

It seems that WiMAX can also switch to TD-SCDMA, and if WiMAX wants to switch, it seems that there is only one way to go. "

After the failure of WiMAX in the U.S., a lot of work was done to China Xia by mistake. When everyone wanted to turn their heads, they found that the best transfer direction for WiMAX was China. Failure to unplug his 4G market share, maybe it is really a certain element of luck.

However, at the scene at this time, it is still difficult for everyone to accept this statement. Several experts on the scene wanted to say something but stopped, and they all swallowed. From the current point of view, everyone felt that Meng Qian said this. It's crazy. This is to make the US wedding dresses for China. Meng Qian actually said this when the US was just getting ready to do WiMAX. What did he think?

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

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

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

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

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