Tddfdd convergence networking promotes industrial

2022-10-23
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Tdd/fdd integration group promotes industrial development in the 4G era

with the issuance or pre commercialization of 4G licenses by the Chinese government, some domestic operators have publicly stated that they will build tdd/fdd integration groups, which puts forward high requirements for multi-mode and multi frequency. China Mobile has also repeatedly emphasized that tdd/fdd hybrid group, 5-mode 12 band support and band 41 support are the key points for China Mobile to develop LTE intelligent terminals. Market research analysts said that from the current situation of China's communication industry, it is intuitive and clear that there will be a market pattern of 4G networks plus three different 3G systems from three operators, and even 2G compatible GSM and CDMA networks

as we all know, TD-LTE and FDD LTE have many common technologies, such as OFDMA technology, multi antenna technology, link adaptation technology, uplink SC-FDMA technology, and so on. In the process of network construction, there is no much difference in core and transmission. Only because of the difference of duplex mode, there are some differences in the RF part of the base station system, and the baseband part can fully realize a common platform, which is conducive to the mixed group of operators. The integration of FDD and TDD networks brings about the unity of terminals. Because there is no essential difference between TD-LTE and FDD LTE, manufacturers can adopt the integrated design scheme when designing chips, and support both TDD and FDD systems. LTE terminals that support multi-mode and multi frequency will be more in line with users' habits and the development needs of operators

in addition, it can be seen from the TDD commercial network data released by GSA that half of the network operators also operate FDD while operating TDD

as the leader of TD-LTE technology, China Mobile has always been committed to promoting and supporting the integrated development of LTE tdd/fdd, and relying on GTI to form a joint force with international operators and global industries to jointly promote the accelerated maturity of TD-LTE and feed back these information to the technical director. In this regard, huangyuhong, vice president of China Mobile Research Institute, once told the media that the traffic of intelligent communication devices will increase a thousand times from 2010 to 2020. Such a large increase cannot be easily solved by a network system, and the TD-LTE and FDD LTE integration group will become very important

for the fusion group, from the perspective of the current development of LTE in China, although FDD started early and the industry is relatively mature, it has the vast majority of commercial experimental machines worldwide, which are classified by use: experimental machines for measuring mechanical properties and experimental networks for process experiments, but TDD frequency spectrum resources are rich, and many operators have spectrum resources of two modes at the same time. The fusion group can make better use of spectrum resources and improve user experience, To give full play to the industrial benefits of scale, some leading operators are already engaged in the integration group of FDD and TDD, which will also become the mainstream trend of the development of 4G industry

in the near future, China Unicom and Chinatelecom will adopt TD-LTE and FDD LTE mixed group mode, while China Mobile will continue to use TD-LTE mode, and the technical route of each operator is basically determined. Due to the different technical routes of 3G networks, after obtaining the TD-LTE license, China Mobile quickly carried out large-scale 4G network construction. The number of users also increased rapidly in January and may 2014, while the attitude of China Unicom and Chinatelecom was relatively flat, and the number of users was not optimistic. After obtaining the pre commercial license of the mixed group this time, China Unicom and Chinatelecom can start to provide FDD services, and the number of users is expected to be improved to a certain extent

regardless of the future competition results of the three operators, the terminal will be the top priority in the competition. Due to the integration group of operators in the LTE era, the terminal will face the demand of supporting different standard networks at the same time, but as the most important part of the terminal, multi frequency and multi-mode is the only choice

as the industry leader, Qualcomm took the lead in launching multi-mode and multi frequency LTE solutions as early as two years ago, took the lead in entering the LTE commercial market, and occupied a leading position in many LTE commercial regional markets. Due to mastering the core patented technologies of most 3G and 4G standards, Qualcomm has obvious advantages in multi-mode and multi frequency processors. In particular, at the beginning of this year, MWC launched the world's first 8-core 64 bit LTE chipset with 5-mode support, snapdragon 615, which is the technology leader of LTE chips. Since the issuance of China's 4G license at the end of last year, most of the 4G sold on the market, except Huawei, which insists on using Hisilicon chips independently developed, have used Xiaolong processors for other domestic brands' medium and high-end models with more than 2000 yuan. According to relevant market data statistics, as of May, Qualcomm accounted for more than half of the market share in China's TD-LTE smart market. It can be said that Qualcomm's leading position in the LTE chip market is difficult to shake for a period of time

although Qualcomm firmly controls the top position, there is still a force in the LTE chip market in the first half of the year that cannot be ignored. Marvell, which has outstanding performance in the 3G era, has made a sudden rise again in the 4G era, competing with Qualcomm to seize the 4G chip market. Marvell launched pxa1088lte chip as early as may 2013, which is the industry's first mass market oriented four core, five mode, 13 band category 4 LTE single chip solution. After the issuance of China's TD-LTE license, Marvell and Coolpad launched the industry's first 1000 yuan 4G smart machine for Chinese mobile users in January this year, taking the lead in reducing 4G to less than 1000 yuan. In the sales data of the first half of the year, it ranked second only to iphone5s. In addition to Coolpad, Marvell has also cooperated with Lenovo, Hisense and other manufacturers to launch a number of 4G smart machine products. For example, Lenovo a788t is also the top three star model in the sales volume of China Mobile TD-LTE products. In the current competition pattern of 4G chips, Marvell's strength in the 4G 1000 yuan machine market cannot be underestimated. According to relevant market data statistics, Marvell has occupied 30% of China's TD-LTE smart machine market in the first half of the year, which can be said to almost share the entire TD-LTE smart machine market with Qualcomm. According to its excellent performance in the 4G 1000 yuan machine market in the first half of the year, Marvell plans to win the second place in the global 4G chip market in 2014

in the first half of the year, the 4G chip market showed a trend that Qualcomm was far ahead and Marvell was catching up in the middle and low end. However, in the second half of the year, with the strong participation of MediaTek, the 4G chip war situation will become more chaotic. MediaTek has been regarded as Qualcomm's biggest competitor since the 2G and 3G era. Although Qualcomm is in the low-end market, the cost performance of its QRD may not exceed the turnkey of MediaTek (after all, this is the housekeeping skill of MediaTek in the 2G era). However, due to Qualcomm's comprehensive QRD, and with the need of intelligent manufacturers to improve revenue and profits (more high-end QRD solutions will be used), Qualcomm's advantages in high-end QRD are bound to spread the pressure to the low-end market, At that time, the only thing MediaTek can deal with is to improve the cost performance of turnkey mode, but in this way, its revenue and profits will bear greater pressure than before

moreover, the delivery time of MediaTek is nearly half a year later than that of Qualcomm and Marvell. Whether MediaTek can keep up in the 4G field depends on its subsequent market performance. In the 1000 yuan machine market, MediaTek's cost-effective advantage will also help it form a fierce competition with Marvell

to sum up, at present, international chip enterprises such as Qualcomm and Marvell play a leading role in promoting the development of high-quality 4G chips. However, with the large-scale commercial use of 4G chip products of MediaTek, Spreadtrum, Lianxin and other enterprises in the second half of the year, the market competition will become extremely fierce. With the continuous introduction of integrated circuit industrial policies, domestic chip manufacturers such as Spreadtrum, Hisilicon, Lianxin technology and SMIC international are expected to usher in leapfrog development. It seems that in the 4G era, the scuffle in the chip market pattern will be inevitable

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