After a year of development, DIGITIMES Research observed the comparison again and found that TD-LTE chip manufacturers have already achieved different markets. The main supplier of single-mode TD-LTE chips is Altair, and the main supplier of multi-mode TD-LTE chips is Qualcomm (Qualcomm). ).

Development trend of 4 type TD-LTE chip manufacturers

In addition to the market gains, there are also some players whose development has slowed down, such as ST-Ericsson, or almost no new information trends, such as VIA Telecom, and others who continue to catch up with the needs of the industry, such as Leadcore A 5-mode chip will be launched, and CYIT will launch a TD-LTE system of a chip (System of a Chip; SoC).

Looking forward to the future, the trend of TD-LTE chips will still be to support more modes and more frequency bands. In 2012, the support specification of 5 modes and 10 bands has been emphasized, and in 2013 it will be further extended to 5 modes and 12 bands, and 5 modes and 13 bands Claim. Although the mode supports the ultimate 5 mode, there are still differences in support standards, such as support for LTE Cat. (Category) 3 or Cat. 4, and future support for Cat. 5 and LTE-A (Long Term EvoluTIon Advanced) .

TD-LTE chip status: domestic manufacturers still have a long way to go

Faced with the development of the LTE industry, Chinese companies have invested heavily in the research and development of TD-LTE chips from the beginning of the development of TD-LTE technology. With the strong support and drive of China Mobile, they have continuously made technological breakthroughs, and some enterprises have started from single mode The TD-LTE chip started, and some companies started with multi-mode TD-LTE chips, which strongly supported the development of China's TD-LTE industry.

Despite the large number of participating companies, the development of LTE terminal chips is by far the most technically difficult terminal chip development project. LTE terminal chips entering commercial use will be multi-mode chips, and must support and be compatible with more mobile communication standards. This is a serious challenge for terminal chip development companies. In this regard, Chinese and foreign companies have their own advantages.

Most of China's chip companies started with the research and development of TD-SCDMA chips, which have obvious advantages in the field of TD-LTE, but many companies have shortcomings in other standards. International leading companies need to make up for their deficiencies in the field of TD-SCDMA. Support for multiple frequencies is another difficulty in developing LTE chips. In the 4G era, there has been no good solution to the fragmentation of global frequency bands. People hope to solve this problem through the support of terminals for multiple frequency bands. This is another serious challenge facing terminal chip companies. At present, there are more than 40 different mobile communication frequency bands in the world. To support so many frequency bands at the same time, it is also necessary to effectively control the power consumption of the terminal. The technical difficulty can be imagined. In addition, terminal chips must keep up with the pace of semiconductor chip technology upgrades, continuously reduce terminal power consumption, and integrate more functions, all of which require chip development companies to have a stronger overall strength.

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