4G will complement each other with 3G for long-term coexistence and implement multi-mode development

Mobile HD Conference, Mobile HD Video Surveillance, Mobile HD Video on Demand, Portable Video, High-Speed ​​Internet Access... Into the Shanghai Mobile World Expo Park in Puxi District, the theoretical peak transmission rate is more than 10 times that of the current 3G network TD-LTE ( The TD-SCDMA evolution technology demonstration network has left a deep impression on many people.

The Chinese consumers who have just entered the 3G era for more than a year now seem to have a bit of relief in the face of the call to the 4G era. However, in the domestic mobile communication industry, the voice of the TD-LTE development strategy and commercial timetable in China has been frequently heard as soon as possible.

So, how far is 4G from us? In the 3G era, under the vigorous promotion and support of the government department in China, China has TD-SCDMA as an international standard of independent intellectual property rights. In the 4G era, TD-LTE Advanced (TD-LTE evolution enhancement technology) also dominated by China. Can it become an international standard? Next, in order to allow TD-LTE evolution enhancement technology to achieve new breakthroughs in the global mainstream market applications, is it necessary for China, which has just been licensed for 3G for 20 months, to accelerate the pace of 4G commercial use?

TD-LTE becomes international standard winning geometry?

● 70%, 90%, 100% No matter how experts predict, TD-LTE evolution enhancement technology has been selected into the global 4G standard, and it has “essentially no problem”. However, international standards cannot occupy the global mainstream market. It is meaningless and multi-purpose. TD-LTE Advanced has become one of the global 4G candidates. In November this year, the International Telecommunication Union (ITU) will hold a meeting in Chongqing to determine who can become the international 4G standard. By that time, how successful is TD-LTE Advanced?

Zhao Houlin, deputy secretary-general of the International Telecommunication Union, once said that the success rate of the TD-LTE follow-up evolution technology in the global 4G standard technology is 70%. Professor Zeng Jianqiu of Beijing University of Posts and Telecommunications believes that the odds are 90%. Another telecommunication expert who did not wish to give his name was more optimistic. "Since the end of 2007, TD-LTE has converged into the 3GPP (Third Generation Partnership Project) standard, and before the ITU vote, the TD-LTE outfield The test has also progressed rapidly. It can be said that we have already made enough preparations to become a 4G standard basically without any problems."

However, this expert also pointed out that although it has always been considered a “great” thing to become an international standard, it does not make much sense that international standards cannot occupy the international mainstream telecommunications market.

In the field of mobile communications, China in the 1G and 2G eras is in the follow-up phase; in the 3G era, TD-SCDMA with independent intellectual property rights not only formed a standard, but also drove the development of the domestic communications industry, but unfortunately, due to commercialization Late in the day, TD-SCDMA only achieved large-scale commercial use in China. Looking into the 4G era, the advent of TD-LTE has allowed us to make further breakthroughs on the basis of becoming an international standard. That is, through competition and convergence to the world, more foreign operators use this standard.

In this sense, the positioning of TD-LTE should be different from TD-SCDMA. The former should emphasize more "it is both China and the world."

It is urgent to formulate TD-LTE national development strategies and plans. ● By 2012, 60 countries will complete 4G frequency distribution. As the TD-LTE leader and the only country in the world with large-scale application of TDD technology, China’s commercial plans are not clear, it is difficult to drive the international operators and equipment manufacturers to follow the TD-LTE development firmly, and increase investment to promote as soon as possible. TD-LTE chips, terminals and other industries mature.

It is understood that by 2012, 60 countries will complete the 4G frequency distribution. According to historical experience, after purchasing huge amounts of 4G licenses, operators generally choose to invest in building new networks so as to seize the market as soon as possible. As a result, the selection of which technology standards has become the most important issue faced by most operators worldwide.

At present, FDD and WiMAX, both of which belong to the LTE camp, are included in the ITU 4G option together with TD-LTE Advanced. LTE FDD started commercial use in 2009. As the TD-LTE leader and the only country in the world with large-scale application of TDD technology, China’s commercial plans are not yet clear and it is difficult to drive the international industry’s greater determination to invest in development. If China does not determine the TD-LTE development schedule as soon as possible, Eliminating the concerns of the global industrial chain, they may not only be inclined to LTE FDD, and WiMAX, which is already in a weak position in competition with LTE, may also take advantage of the potential and crowd out space for TD-LTE development.

4G will set off a new round of industrial competition in the field of mobile communications, and TD-LTE is undoubtedly a historical opportunity for China's communications industry. If we seize this opportunity, our communications industry will take a new step. Otherwise, TD-LTE will likely follow the same deficiencies that CDMA encountered in the 3G development and low market share.

In addition, spectrum is a scarce resource in the world, and the frequency division of TD-LTE in China is not yet clear, which poses great risks to the deployment of TD-LTE in the world. The 2.6 GHz frequency that can be used globally and the 700 MHz high-quality frequency that has not yet been planned in China are planned for TD-LTE, promoting global simulation and reference, and winning frequency resources for TD-LTE global development is imminent.

If TD-LTE is to be widely used around the world to ensure China’s position in a new round of international standards competition, successful commercialization and deployment in China are important conditions that are indispensable. Whether TD-LTE can achieve a leap is particularly critical in these two years. Industry experts called for the entire industry chain to act as early as possible, further clarify the strategic status of TD-LTE under the leadership of the government, formulate China's TD-LTE development strategy, planning and commercial timetable, and complete the construction of TD-LTE network and optimization as soon as possible. Planning and solution, continue to provide policy support for TD-LTE chips, terminals and other industrial chains, test instrument weaknesses, and improve the TD-LTE end-to-end product capabilities and levels of ...

4G will complement each other with 3G and coexist for a long time. ● With the rapid development of the mobile Internet and the rise of the Internet of Things, global mobile operators have taken a new step towards the requirement for wireless data transmission bandwidth, which has laid a foundation for the commercial use of 4G technology. Like the current coexistence of 3G and 2G, the future of TD-LTE is complementary to TD-SCD-MA and coexists for two years in the long term. The reason why 4G has become a hot topic in the global mobile communications field is behind the market. Around 2003, 3G represented by WCDMA and CDMA2000 began to be used commercially on a large scale. At that time, due to the data transfer rate of only a few hundred kb, the users had poor access to the Internet and no mainstream applications were formed. Global operators generally suffered losses.

Around 2007, with the introduction of 3G-enhanced technologies such as HSDPA and HSUPA, the data transmission rate has increased dramatically, especially the emergence of smart terminals represented by the iPhone, which has opened the prelude to the rapid development of mobile Internet. In addition, with the rise of the Internet of Things, the requirements for wireless data transmission bandwidth have reached a new level. The current 3G technology can no longer meet the needs of the mobile Internet and the Internet of Things, which lays the foundation for the commercial use of 4G technology.

Compared with WCDMA and CDMA2000, the industrialization of TD-SCDMA started relatively late and the industrial chain needed time to mature. At the time, the global 3G development was at a relatively low level. We chose to suspend the issuance of licenses and set aside time for the industrialization of TD. Has become the only choice for China's 3G development.

Take the opportunity of the 2008 Beijing Olympic Games to take the lead in launching commercial trials of TDs. In early 2009, three 3G licenses were issued. It should be said that it is also an appropriate policy for the times.

However, it goes without saying that the late start of China's 3G has also brought a series of problems, such as the slower pace of development of 3G users and the lack of mainstream applications. In this case, the proposed 4G commercial timetable will indeed cause misunderstandings to ordinary consumers. However, it must be pointed out that due to the lack of market demand for high-capacity wireless data transmission, coupled with the TD-SCDMA industry chain is not mature enough, we can drag on the 3G for five or six years, but now, on the issue of global promotion and application of TD-LTE However, it does not allow us to hesitate and hesitate.

It is reported that this year, China Mobile has accelerated the pace of TD-SCDMA construction, and the target that was originally planned for completion in 2011 was completed ahead of schedule this year. At present, China Mobile has already built about 200,000 base stations and achieved coverage of all provinces and cities in the country. It can be said that the TD network construction has been basically completed.

Experts pointed out that, just as the current 3G and 2G coexistence, the future of TD-LTE and TD are complementary and long-term coexistence. The TD equipment currently being invested and constructed can completely realize the smooth evolution to TD-LTE, therefore, it will not cause investment waste.