The shortest-lived 3G network in history: TD-SCDMA triggers "destroy"

In the recent period, an article titled "TD-style Innovation" caused an uproar on the Internet. The article discredited TD-SCDMA with a large number of opinions. Some insiders pointed out that its deeper meaning is to attack "Chinese-style innovation."

The introduction of "TD-style innovation" said: "200 billion yuan will never be recovered, in exchange for a TD-SCDMA network that has stopped developing in five years, and the proportion of so-called independent intellectual property rights has been controversial. The route, failure to conclude." Chasing TD-SCDMA. This is in line with the consistent style of Caixin. For China’s efforts, it has always been a thorn, a smear, and it’s dead and fast. The most representative is its attack and discredit on high-speed rail. As long as it is a successful place for China, It will go black, as long as it is a problem in China, it will be magnified. So it is not surprising to have such an article.

Since TD-SCDMA has already risen to the height of the country, different views on TD-SCDMA have been difficult to express. With this rare opportunity, people who support and oppose TD-SCDMA have expressed their opinions. One time, a hundred schools of thought contend very busy. However, due to disagreements, a rational discussion has evolved into a fierce battle. Some articles even bypass the point of view and directly criticize the author who wrote the article, even the media that published this article---"You have a problem with this person, you The opinion is definitely not correct!"

The so-called benevolent sees the wise and sees the wisdom, and sees so many articles in the heart can not help but have some doubts, here I hope to find the answer.

The shortest-lived 3G network in history: the "defective war" caused by TD-SCDMA

Question 1: Is there really a problem with the TD-SCDMA smart antenna?

The first person who questioned TD-SCDMA technology was Fu Haiyang, a doctoral supervisor at Nanjing University of Posts and Telecommunications. As early as 2005, Fu Haiyang once raised his own doubts about the core technology smart antenna of TD-SCDMA, and believed that this technology may be suspected of fraud. The question raised by Fu Haiyang was once concerned and discussed by the Ministry of Information Industry. Because no one can convince the other party, Fu Haiyang published a number of articles on the Sina blog that questioned the TD-SCDMA smart antenna fraud. With the attention of the media, the Internet has set off a heated discussion about whether TD-SCDMA is another "Hanxin" for academic fraud.

From the TD-SCDMA standard in 2000 to the open question of Professor Fu Haiyang on the Sina blog in 2008, the development of the entire TD-SCDMA technology has been going on for 9 years. If smart antennas have technical fraud, many manufacturers involved in the development of TD-SCDMA products should find out that it is obviously unreasonable for manufacturers to avoid this. But for this reason alone, it is obviously not rigorous to deny Professor Fu Haiyang's point of view. Since TD-SCDMA has already been joined by a large number of enterprises, in order to prove that there is no problem with the TD-SCDMA smart antenna, it is imperative to bring out qualified products. Facts speak louder than words, and with qualified products, there is an answer to whether or not to make a fake.

However, the situation is not as optimistic as imagined. From the issuance of 3G licenses, China Mobile's TD-SCDMA network construction has encountered a lot of problems. As a core advantage of TD-SCDMA, the smart antenna technology is over-sized (equivalent to two-thirds of a door panel) and has been greatly resisted by the surrounding residents during the construction process. Not only that, because smart antenna technology is not mature enough, TD-SCDMA relying on smart antennas has serious problems in signal coverage. Today, a large number of China Mobile's mobile phone users are still on 2G and 4G networks, and the utilization rate of 3G networks is only 30%. In order to solve the problem of poor coverage of TD-SCDMA network, China Mobile has to use a large number of WiFi hotspots to divert data services, and the bad 3G signal has become a permanent pain in China Mobile.

Question 2: Is the right to speak in the communications industry to rely on TD-SCDMA?

There has always been a view that Japan can use its own PDC standard in the 2G era. In the 3G era, the United States can use its own CDMA and WiMax standards. Why can't China use the TD-SCDMA standard as a country with 1.3 billion people? In order to improve China's voice in the international communications industry, some people even put forward the idea that all three operators only use TD-SCDMA.

Since China started late in the communications industry, China's communications equipment in the 1G and 2G era mainly used communications equipment from foreign equipment vendors. Due to the different standards of foreign equipment used, operators once used the "seven countries and eight systems" to describe the mess of communication equipment. Due to the poor quality of foreign equipment and the high standard of price, Chinese operators have suffered a lot of dumb losses for quite a long time. In order to completely solve this problem, we urgently need Chinese enterprises to provide high-quality and beautiful communication equipment. Communication equipment manufacturers such as “Great China” are born in this context.

As these Chinese companies grow and develop, our scientists are finally able to participate in the discussion of 3G standards. At this time, whether to independently develop their own standards or to participate in the discussion of international standards as much as possible is the key to determining the development of a company. The company headed by Datang decided to adopt its own independent research and development 3G standard, and desperately put its future in the development of TD-SCDMA. Other companies represented by ZTE Huawei decided to walk on two legs while paying attention to the development of TD-SCDMA. The other side also did everything to participate in the discussion and development of WCDMA and CDMA2000 standards.

Why does ZTE Huawei not completely put its hopes on TD-SCDMA with independent intellectual property rights? The key to this is the Japanese experience and lessons. In the 2G era, Japan used its own independently developed PDC standard. Because this standard is not compatible with the international GSM standard, many Japanese communication companies are not able to participate in international competition, and the market competitiveness is naturally greatly reduced. In order to solve this problem, Japan was the first in the world to adopt the GSM 3G evolution standard WCDMA in 2000, and it does not exclude CDMA2000. This has made Japan's communications industry develop rapidly and is among the best in the world.

The lessons of Japan tell us that although closed-door countries can create short-term prosperity, they may eventually lose more. In the context of economic globalization, only open cooperation can achieve development. Today, ZTE Huawei is not only ranked among the world's leading equipment manufacturers due to its accumulation in WCDMA and CDMA2000, but also has a market share of hundreds of countries and regions in the world with its excellent product performance. With a huge market share and sufficient financial support, both 3G and 4G standards have more voice. Through the cross-sharing of WCDMA and LTE patents, companies such as Huawei ZTE not only do not have to pay huge patent fees, but can obtain considerable patent revenue, which is unimaginable in the 2G era. In contrast, Datang, because the future is completely on TD-SCDMA, not only because of the delay in the 3G license, but also because of the lack of funds to produce equipment that is far less quality than ZTE’s equipment. A base station was replaced by Huawei ZTE.

Question 3: Is TD-SCDMA the key to the growth of TD-LTE?

There is such a view that it is precisely because of the accumulation of TD-SCDMA that TD-LTE can develop rapidly in China. Without TD-SCDMA, China Mobile will not be able to build a TD-LTE network that is "comparable to the 3 years of the 3G era" in a year.

Unfortunately, the rapid development of TD-LTE has little to do with TD-SCDMA. It is not only difficult to see from the literal point that TD-SCDMA and TD-LTE are essentially different in core technology or network performance. In addition to the same TDD time division duplex mode, there is no particular connection between TD-SCDMA in the 3G era and TD-LTE in the 4G era. The reason why China Mobile's TD-LTE network is built so fast is not because of the so-called "evolution" relationship between TD-LTE and TD-SCDMA, but because China Mobile spends huge sums of money on the long-term accumulation of sites, antennas and even transmission lines. . This accumulation has nothing to do with TD-SCDMA, and is also required for any kind of 3G system. The so-called TD-SCDMA can be "software upgrade" for TD-LTE. It is only the gimmick when equipment vendors promote their products. Due to the essential difference between 3G and 4G technologies, most 4G base stations need to be rebuilt. "Software upgrade" is just The original software shielded 4G function is unlocked.

Editing:

As a 3G technology with independent intellectual property rights in China, TD-SCDMA has always been a very sensitive topic. We should neither put its myth nor over-criticize. But in retrospect, the international standards proposed by China should be supported as Chinese. The United States can support cdma2000, support wimax, and operators have made huge investments. Shouldn't China support it? TD-SCDMA has experienced the joint efforts of several generations in China. Its achievements are worthy of recognition, because it has never been a standard of independence, and its emergence has driven the development of the entire industry.

The truth is more and more clarified. For TD-SCDMA, we hope to hear more rational voices.

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