What you do not know the TD-SCDMA
Last time, caixin, a name of the TD-innovation article caused a stir on the Internet. Due to the TD-SCDMA has already risen to national level, different views for TD-SCDMA has been difficult to express. Take this rare opportunity, supporters and opponents of TD-SCDMA who have expressed their views, contention is very lively. However, due to disagreements, a rational discussion evolved into a war of words, some even bypass point directly criticizes those who write articles, even published this article media—-“you people have problems, your opinion is not correct! ”
Is the so-called benevolent, I’ve seen so many articles could not help wonder, hoping to find the answers here.
Problem 1:TD-SCDMA smart antenna problems?
First person who challenged the TD-SCDMA technology, Nanjing University of posts and telecommunications are the doctoral students Fu Haiyang. As early as 2005, Fu Haiyang was himself questioned the TD-SCDMA core technology of smart antenna, that suspected fraud may exist of this technology. Fu Haiyang questions has also been affected by the Ministry of information industry’s concern and discussion. Because of who I could not convince each other, Fu Haiyang Sina Blog has published some articles questioned on TD-SCDMA, smart antenna fraud articles. With the media attention, the network launched TD-SCDMA is not another academic fraud, “Han Xin” intense discussions.
From the 2000 TD-SCDMA standards put forward by 2008 Fu Haiyang professors openly questioned in the blog, the whole development of TD-SCDMA technology is already 9 years ‘ time. If there are smart antenna technology fraud, many manufacturers involved in the TD-SCDMA product development should find entirely, manufacturers have avoided to mention obviously have no idea about this. But simply by virtue of the reasons negate Professor Fu Haiyang also apparently not stringent enough, now that TD-SCDMA had a lot of involvement, to justify its TD-SCDMA, smart antenna is no problem, it is imperative to take out qualified products. Facts speak louder than words, with the qualified products, whether fraud has had the answer.
However the situation is not as optimistic, starting from the 3G licensing, China Mobile’s TD-SCDMA network construction ran into a lot of problems. As TD-SCDMA, smart antenna technology owing to the large volume of core strengths (equivalent to a door mat two-thirds), during the construction process has been around a lot of resistance. Furthermore, as the smart antenna technology is not mature enough, relying on smart antennas on TD-SCDMA in signal coverage there is a serious problem. Today, a large number of mobile phone users is still stuck in the 2G and 4G networks, 3G network utilization is only 30%. in order to solve TD-SCDMA problems with poor network coverage, mobile data services had to use a lot of WiFi hotspots to be split, while the 3G signal not also became China Mobile heart pain.
Question 2: improve communication industry say whether TD-SCDMA?
All along there is a perception, 2G era Japan can use its own research and development of PDC standard, 3G era United States can use their own research and development of CDMA and WiMax standards, as China, with 1.3 billion people, why not use the TD-SCDMA standard? In order to increase the voice of China in the international telecommunications industry, some people even had three players with only TD-SCDMA point of view.
Since China started late in the communications industry, 1G, 2G, China’s main foreign equipment manufacturers of communication equipment communication equipment. As a result of differing standards of foreign equipment, operators of “seven eight” to describe the clutter of communications equipment. Due to the high price of foreign equipment of poor quality and standards, Chinese operators who eat a lot of yabakui in a long time. To solve this problem, there is an urgent need for China’s enterprises to provide lower prices and America’s communications equipment, “great China” of such communication equipment business was bred under such a background.
With the development and expansion of these Chinese companies, our scientists finally have the ability to participate in discussions to 3G standard. At this time, is independently developing its own standards is as much a business decision was participating in the discussion of a key to development. Enterprise decided to use its own independent research and development, led by Datang 3G standards and broke and has staked its future on the development of TD-SCDMA. Represented by Huawei ZTE, others decided to walk on two legs, and concern the development of TD-SCDMA, and on the other to do everything we can also participate in the discussion and development of WCDMA and CDMA2000 standards.
Why Huawei ZTE not entirely independent intellectual property rights on the TD-SCDMA hope then? The key is in the middle of Japan experiences and lessons learned. In the 2G era, Japan uses its own independent research and development of PDC standard. As a result of this standard and the international GSM standards are not compatible, many Japan telecommunications companies cannot afford to participate in international competition, competitiveness naturally compromised. In order to solve this problem, Japan as early as 2000, the worldwide first with WCDMA 3G evolution of the GSM standard, but also does not exclude CDMA2000. This makes Japan‘s telecommunications industry has developed rapidly, and ranked in the forefront of the world.
Japan‘s lesson teaches us that isolation despite temporary prosperity can be created, but eventually could lose more. On the background of economic globalization, only open cooperation for development. Today, Huawei ZTE WCDMA and CDMA2000 accumulation is not only among the ranks of the world’s leading equipment manufacturers, and with excellent product performance the global market shares in hundreds of countries and regions. Have a huge market share and plenty of financial support, either 3G or 4G and will have a more power. By cross share of WCDMA and LTE patents, companies like Huawei, ZTE not only do not need to pay huge royalties, they can receive substantial licensing revenues, which in the 2G era, it is difficult to imagine. In contrast, Datang, due to pressure in the TD-SCDMA future, and not only because of 3G licenses delays and a difficult situation, but due to lack of funds put into production is far less than the quality of the equipment, ZTE, Huawei’s equipment, eventually fell to a base station to be replaced by Huawei, ZTE‘s end.
Question 3:TD-SCDMA TD-LTE key for development and growth?
There is such a perception, it is because of accumulation of TD-SCDMA, which makes the TD-LTE in China’s fast-growing. Were it not for TD-SCDMA, China Mobile would not get there in one year’s time in the construction of a “comparable to 3G age 3 years” TD-LTE network.
It is regrettable that, rapid development of TD-LTE and TD-SCDMA does not matter much. Just literally is not difficult to see, TD-SCDMA and TD-LTE is the core technology of network performance is of a different nature. In addition to TDD TDD using the same, 3G TD-SCDMA and 4G TD-LTE and does not have many links. Construction of China Mobile’s TD-LTE networks are so fast, not because of TD-LTE and TD-SCDMA’s so-called “evolution”, but because China Mobile spent on long-term accumulation of stations, antennas and transmission lines. This has nothing to do with TD-SCDMA, are also required for any 3G system. Known as TD-SCDMA “software upgrade” to TD-LTE is more a gimmick to equipment manufacturers to promote their products, due to the essential difference between 3G and 4G, most of the 4G base station needs to be building, “software upgrade” just shielded 4G features original software unlock.
Summary:
As China’s independent intellectual property rights 3G technology, TD-SCDMA has always been a very sensitive topic. We should neither be myths, and should not be overly critical. TD-SCDMA has experienced the efforts of several generations, and it’s achievements are worthy of recognition. More debates, the more the truth, for TD-SCDMA, we would like to hear more voices of reason.