The development goals of China's 3G and 4G industries in the next five years have been written in the consultation draft of the "Twelfth Five-Year Plan for Broadband Network Infrastructure" (hereinafter referred to as the "opinion draft"), indicating that 3G and 4G will become the "Twelve Five" During this period, the dual engine that has driven the continued growth of China's telecommunications industry is expected to have a total investment scale of more than 1 trillion yuan.

The opinion draft shows that during the "Twelfth Five-Year Plan" period, China will further accelerate the construction of 3G networks, and plans to realize the number of 3G base stations reaching about 1.2 million by the end of the planning period. According to the above-mentioned authoritative sources, according to the latest data from the Ministry of Industry and Information Technology, the current number of 3G base stations in China is about 700,000, which means that about 500,000 3G base stations will be built during the "12th Five-Year Plan" period. The investment scale is expected to exceed 500 billion yuan; in 4G, TD-LTE (China's leading 4G network technology) scale technical test will be carried out during the 12th Five-Year Plan period, and TD-LTE trial commercial deployment will be launched in due course. The person believes that based on 3G construction experience and corresponding expenditures, the direct investment in R & D and construction in the early stage of 4G construction will be 500 billion yuan. If it is planned to build a 4G network of the same size as the existing 3G network, the investment scale will exceed 1 trillion. yuan.

In an interview with reporters, Qiu Hao, a researcher at the ZTE Research Department, said that the relevant development plan in the opinion draft indicates that 3G and 4G will become the dual engines that will drive the continued growth of China's telecommunications industry during the "Twelfth Five-Year Plan" period, and the huge investment scale It is expected to ensure that the upstream and downstream industry chains get full development opportunities.

According to Qiu Hao, according to China Mobile ’s investment ratio for TD-SCDMA network construction expenditures, if the investment in 3G base station construction during the “Twelfth Five-Year Plan” period is 500 billion yuan, then equipment manufacturers, builders and testers will receive investment quotas The ratio is about 6: 3: 1, and the amount will reach 300 billion yuan, 150 billion yuan and 50 billion yuan respectively.

In terms of 4G construction, a person familiar with the situation revealed to reporters that a few days ago, China Mobile has reached a cooperation intention with Datang Telecom and other manufacturers, and plans to start building a TD-LTE network as early as 2013 and start commercial trials. Earlier, Chen Shanzhi, vice president of Datang Telecom Group, also revealed to reporters from Economic Reference News that after the previous large-scale tests in many cities, TD-LTE has reached commercial standards, and the construction of 4G networks is expected to begin in 2014. And the investment scale will not be lower than 3G network.

The analysis report of Oriental Securities Communication Industry also pointed out that the scale of 4G network construction is expected to be no less than 3G, which will enable domestic telecommunications equipment manufacturers to obtain a round of industry development opportunities that exceed the scale of 3G investment. According to Huang Xiaoqing, president of the China Mobile Research Institute, the market size of the entire 4G industry chain will be larger, which will be the sum of the size of wireless networks such as 3G and WiMAX.

In terms of 4G technology, since domestic telecommunications equipment manufacturers have independent intellectual property rights, a number of equipment manufacturers and core system providers will benefit first; chip manufacturers, mobile terminal manufacturers, etc. will also benefit in succession, scattered in 4G With the final operation of the 4G network construction, enterprises in all links of the industry chain will usher in huge development opportunities.

Kang Zhiyi, a TMT industry analyst at Tokai Securities, pointed out that as far as the industry chain is concerned, 4G is not much different from 3G, and the time sequence for benefiting operators from huge capital expenditures is also consistent with 3G. According to subdivided industries, 4G-related industrial chains are roughly divided from top to bottom: radio frequency devices, system equipment, fiber optic cables, network wiring, network optimization, system testing, mobile phone terminals, IC cards, operation and maintenance, and value-added services. Therefore, the chronological order of benefit is also arranged from front to back, and it is similar to investment 3G in investment strategy.

Qiu Hao pointed out that the leading role of network construction cannot be underestimated. With the construction of 3G and 4G networks, domestic telecommunications networks will be further optimized, and corresponding network services and applications will continue to emerge. By then, the telecommunications service industry and the wireless Internet service industry will usher in development opportunities. The materials provided to reporters by China Mobile show that China Mobile is actively deploying corresponding services and applications. At present, it has launched a "wireless city" plan in many cities, and has initially formed a total of 23 categories of government, people's livelihood, and enterprise production management. Key industry applications involve multiple applications that are close to the needs of government and citizens.

Storm Circuit has been producing Multilayer PCBs for over 10years. Over the years, we have seen all types of multilayer constructions from various industries, answered all types of multilayer questions, and solved all types of problems with multilayer PCBs.

Multilayer PCB is a circuit board with two or more layers. The material unlike Double-Sided PCBs with only two conductive layers all multilayer PCBs is that it must have at least three layers of conductive material, and the PCB boards are buried in the center of the material.

Benefits of Multilayer PCBs (compared to single or double-sided PCBs)

Higher assembly density 
Smaller size (considerable savings on space)
Increased flexibility
Easier incorporation controlled impedance features.
EMI shielding through careful placement of power and ground layers.
Reduces the need for interconnection wiring harnesses (reduces overall weight

Multilayer PCB

Multilayer PCB,Multilayer Bga Board,Multilayer Smd PCB,Multilayer Circuit Board PCB

Storm Circuit Technology Ltd , https://www.stormpcb.com