From TD-SCDMA to TD-LTE, the TD industry driven by China's independent standards has gone through 15 years of twists and turns. If this is a "symphony" that reflects China's determination and confidence in seeking the right to speak in the international telecommunications industry, and shows its ambition and determination to use independent innovation TD-SCDMA technology as a major strategy for 3G development, then the chip must be one of them. stringed instrument". It was ups and downs with TD "Symphony", staged an exciting and intertwined movement. Origin: TD-SCDMA into a chip training ground After the cultivation and baptism of the development of the TD-SCDMA industry and the experience of the 3G market competition, China's chip industry has gradually developed and expanded. The bottleneck problem that restricts the development of TD-SCDMA has basically been basically solved. From the initial launch of the TD-SCDMA standard, to the determination of the 3G communication standard by the International Telecommunication Union, and then to the issuance of 3G licenses, TD-SCDMA has played the strongest "independent" voice for China in the 3G communication era. Its own 2G standard is subject to the passive situation of European standard GSM and American standard CDMA. The creation of this independent standard provides domestic chip companies with a once-in-a-lifetime opportunity to accumulate products, talents, and technology, laying the groundwork for its subsequent evolution. Zhang Weili, general manager of MediaTek China, told reporters from China Electronics News that TD-SCDMA is China's own intellectual property rights 3G communication standard, which brings special development opportunities to Chinese chip companies. But in the early stages of TD-SCDMA industry development, chips can be described as the weakest link in the entire industry chain. Because the development technology of terminal chips is complex and the cost of research and development is high, it is greatly affected by technical standards, technical indicators, and spectrum planning. Although domestic chip companies have found new strengths, their development also requires the cultivation of the "soil" of the industrial environment. Zhang Weili pointed out: "In the early stage of chip design, the establishment of the industrial environment and the maturity of the network equipment laboratory environment are the prerequisite for the maturity of the chip. In addition, the development of the chip is inseparable from the maturity of the industrial environment. Many technical standards and directions should be determined as early as possible. It is conducive to the early determination of chip specifications and the acceleration of chip maturity. At the same time, the guidance of operators is very important for the expansion of industrialization. Operators ’large-scale procurement will drive terminals and drive the scale development of the chip industry." From the aspect of chip technology at that time, on the one hand, the performance of TD-SCDMA chips is relatively weak, and the experience accumulation of participating companies is relatively insufficient. Therefore, for the other two 3G standards WCDMA and CDMA2000, the maturity and hardware of TD-SCDMA chips The indicators are relatively lacking. On the other hand, at that time, China Mobile required that all TD-SCDMA must be backward compatible with GSM / EDGE networks, which required higher chip integration. In addition, due to TD-SCDMA technology, equipment, terminals and other factors, as well as the impact of business models and market demand, 3G licenses were issued later than expected, which made chip companies that want to wear their eyes a bitter taste. Kaiming, one of the core companies, closed down. Other companies are also struggling to support. However, "Shou Deqing is clear and the moon is bright." Since the issuance of 3G licenses in 2009, under the strong push of China Mobile, after the joint efforts of enterprises in all links of the industrial chain, the construction and optimization of the TD-SCDMA network have been basically perfected. After the cultivation and baptism of the development of the TD-SCDMA industry and the experience of the 3G market competition, China's chip industry has gradually developed and expanded. The bottleneck problem that restricts the development of TD-SCDMA has basically been basically solved. Since November 2009, the TD-SCDMA terminal market has shown explosive growth, making the chip market increasingly active. On the one hand, Spreadtrum, Lianxin Technology, T3G and other core TD-SCDMA chip companies have handed out beautiful transcripts. On the other hand, many chip giants have successively joined the TD-SCDMA chip market. Marvell, Qualcomm and other chips that originally held a wait-and-see attitude The giants are also optimistic about the layout of this market, fundamentally revitalizing the TD-SCDMA chip market that had been waiting for "redemption". In the first half of 2010, the total shipments of the three major TD-SCDMA chip manufacturers have exceeded 20 million, which has driven down the overall cost of TD-SCDMA chips and terminals. March: TD-LTE development leads to new challenges At present, TD-LTE terminal chips are moving towards large-scale commercialization. Most chips developed by chip manufacturers are also close to the level of large-scale commercialization. The current problems are mainly reflected in the performance, power consumption and power consumption in a multi-mode environment. Stability. In the 3G era, although domestic efforts have been made to promote the TD-SCDMA standard overseas, there are many difficulties. In addition, there is still a certain gap between its deployment and promotion in China and the expected goal. Focusing on the status quo and the rising trend of international communication technology, in order to ensure the long-term sustainable development of TD-SCDMA, China's research has proposed TD-SCDMA follow-up evolution technology TD-LTE, and strive to lead it to become a 4G international standard. In January 2012, TD-LTE officially became the 4G international standard, which is not only conducive to the further promotion of TD-LTE technology in the world, but also brings new and important opportunities for China to lead the development of the mobile communications industry. But in the development of TD-LTE, we must also learn the lessons learned in the 3G era. Yang Hua, secretary-general of the TD Industry Alliance, which plays an important role in advancing the process of TD industrialization, pointed out that the development law of mobile communications is the application of a generation, and the development of a generation at the same time, so it is a process of continuous research and development. The development of TD-LTE relies on the development of the TD-SCDMA industry, and the two develop in harmony with each other. Since TD-SCDMA has formed an industrial camp, it has laid the foundation for the development of TD-LTE. We should pay close attention to launching the TD-LTE standard so that it coincides with the entire international 4G launch time. At the same time, industrialization is promoted through extensive international cooperation, and the development of TD-LTE is jointly promoted through integration. In recent years, with China Mobile's large-scale promotion of TD-LTE network construction, the TD-LTE industry chain led by China has entered the fast lane, not only in full swing in China, but also in foreign countries. The plight of "flowering" in China. "TD-LTE has really been adopted all over the world, whether it is in Europe, the United States, or other countries in Asia, which shows that the technical form of TD-LTE has been greatly affirmed. TD-LTE has completely gone out of the country, This is a great progress. "Zhang Lu, Director of Marvell Mobile Products, said. Although LTE "looks beautiful", due to China Mobile's need to consider backward compatibility and the need to strengthen deployment at home and abroad, it also poses many challenges such as multi-mode and multi-frequency for the TD-LTE chip. Zhang Weili pointed out that on the one hand, the Chinese market puts forward more complex technical requirements for TD-LTE mobile phones, because 5 modes are considered in China, and only 3 modes are required in most parts of Europe and America. Multimode brings higher technical requirements and challenges . On the other hand, compared with LTE FDD, the interoperability of TD-LTE and other standards is more technically difficult, so the maturity of TD-LTE multimode chips is later than LTE FDD. At the same time, the chip should also consider how to cross the integration level and cost "off." "Since 4G networks need to coexist with 2G and 3G networks, the chip must support different modes and frequency bands, which also poses great challenges and more issues for terminal design, such as how to simplify highly integrated and complex RF, with fewer devices Support more frequency bands, how to plan the spectrum better and how to reduce the cost of the terminal, etc. In addition to chips, other accessories such as radio frequency, filters, amplifiers, etc. also need to achieve a higher degree of integration to reduce the number of components, This also raises higher requirements than conventional 2G and 3G terminals. "Zhang Lu said. But overall, the maturity of TD-LTE has far exceeded the maturity of the TD-SCDMA network when it was just deployed. Zhang Lu said: "In terms of the maturity of the chip and the prosperity of the mobile phone form, TD-LTE is much stronger." Zhang Weili also pointed out that the current TD-LTE terminal chip is moving towards large-scale commercialization, and most chip manufacturers The developed chips are also close to the level of large-scale commercialization. The current problems are mainly reflected in the performance, power consumption and stability in a multi-mode environment, which depends on continuous technological progress and optimization. The future: follow-up integration shapes a new landscape Because of the advantages of cost and rapid market response, the future competitive landscape will undergo major changes, and Chinese chip makers will rise rapidly, especially in the low-end 4G market will lead the European and American chip manufacturers. The TD-LTE effect continues to ferment, while opening up a "reserved land", it also brings new fission. On the one hand, in the TD-LTE chip market, Qualcomm, Intel, Marvell, Broadcom and other giants are competing for layout, and some new faces have also surfaced, which will have a profound impact on the future market pattern. On the other hand, after these ups and downs, the TD chip enterprise camp has also "victimized", some have been split, some have been transformed, and some have become fireworks. At the same time, a new round of integration is continuing. Recently, China's LTE camp, Spreadtrum and Rui Di Ke have been acquired by Ziguang Group, which may trigger a series of chain reactions to the LTE industry. Zhang Lu said that in the future, more manufacturers will enter the LTE chip market, but the future market will also have more integration, and each company's product positioning will change. At present, there are more than 17 chip companies in the world investing in the development of LTE terminal chips, which is much higher than the number in the 2G and 3G eras, which shows that the global terminal chip industry is highly optimistic about the future market development prospects of 4G. Facing the confrontation between the old and the new in the market, it has put forward all-round requirements for the chip manufacturers that are still fighting in this market. "As the market upgrades faster and faster, the grasp of comprehensive strength will become the basis for a long-term foothold in this market. This includes mastering wireless technology, high-performance application processors, software and hardware integration capabilities, high-performance SoC, The establishment of a global customer service system, etc. "Zhang Weili said. Judging from the current market structure, Qualcomm has launched LTE terminal chips and solutions that support all mobile communication standards in the world and more than 40 frequency bands, ranking the world's leading position. China's HiSilicon has also launched LTE terminal chips supporting 5 modes, and the multimode chips of Spreadtrum, Lianxin, and Zhongxing Microelectronics have also reached commercial level. It should be said that China's LTE chip industry has moved forward on the basis of TD-SCDMA This is a major step in supporting the development of China's LTE industry. At the same time, we should also see that there is still a big gap between China's LTE chip industry and the world's leading level. China's chip companies still need to be further improved in terms of technical level and maturity. Focus on raising the technical level and maturity to a new level. Liu Jitang, vice president of Lianxin Technology, is very confident in the future performance of domestic chip companies. He believes: "Because of the advantages of cost and rapid market response, the future competitive landscape will change significantly, and Chinese chip manufacturers will rise rapidly, especially in The 4G mid-to-low-end market will be ahead of European and American chip makers. At the same time, China's LTE chips will also take advantage of the trend of globalization of communications to realize the globalization of 'China Chip'. "Liu Jitang, vice president of Lianxin Technology Be confident. Of course, in this process, domestic chip companies will still face many problems. Liu Jitang mentioned, such as how to further reduce product costs, how to balance input and output and other issues. To solve these problems, Chinese LTE chip manufacturers need to strengthen technology accumulation and patent accumulation on the one hand, and strengthen their understanding and control of the market on the other hand, so as to have the opportunity to grow into a global international company. "Insist on step by step to enhance the core competitiveness, fight for the war, take time, and persist for 5 to 10 years, will certainly be able to break the international giants' capital and technology accumulation advantages, and establish China's chip industry's leading position in the international market." Liu Jitang further pointed out, " In this process, it is indispensable for the country to continue to adhere to the industrial support of TD-SCDMA technology with independent intellectual property rights and TD-LTE. " For the subsequent evolution of LTE, chip manufacturers are also gathering strength. Zhang Weili pointed out that MediaTek will closely observe and participate in the formulation of LTE-A technical standards, following the pace of operators' evolution in LTE-A technology. In terms of R & D, chip makers should be prepared for wireless technology, and at the same time be prepared for the challenges that ultra-wideband wireless technology poses to the overall system chip of mobile phones. "The advantage of LTE-A is that it can make better use of the spectrum, increase the downlink and uplink rates, and provide consumers with a better experience; for operators, LTE-A can better disperse scattered data under the same bandwidth. The spectrum of the world is integrated to improve the efficiency of spectrum use. However, due to the wider spectrum of China ’s TD-LTE network, the advantages of LTE-A integration cannot be reflected in China. â€Zhang Lu mentioned,“ LTE-A will be in North America next year Starting commercial use in Europe, Marvell has already started to do LTE-A research and development. "
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