On June 25th, as the leading enterprise of technological innovation in China's high-tech field, with TD-SCDMA and TD-LTE, Datang Mobile, a subsidiary of Datang Telecom Technology Industry Group, has successfully stepped out of a The standardization of industrialization, industrial marketization, and market internationalization, the independent innovation development path has become an extremely significant and far-reaching innovation exploration in the high-tech field in the process of China ’s commitment to a strong country of independent innovation. Its unique and creative innovation development The model has also become a valuable asset for China in the process of becoming a powerful country through science and technology and innovation.
In recent years, as the TD-SCDMA evolution technology TD-LTE has matured, how to efficiently and quickly complete 4G (TD-LTE) network deployment and ensure the quality of 4G trial commercial networks has become a topic of common concern in the industry. Datang Mobile, as the birthplace of the TD standard and the proponent of the TD-LTE core standard, fully demonstrates the spirit of innovation and change, and constantly seeks to build a high-quality TD network.
Promote the development of TD standards and technologies and enhance core competitiveness
Standards, patents and talents are the three major strategies of China's technological development. As a high-tech field of global market competition, mobile communications, the characteristics of the entire process, the entire network, and the fully connected industry and the development law of intergenerational migration determine that core technologies and standards will inevitably become the commanding heights of competition in the telecommunications industry. In June 1998, Datang Telecom Technology Industry Group formally submitted standard recommendations to the ITU on behalf of the Chinese government. In May 2000, TD-SCDMA was approved by ITU as the international standard for the third generation of mobile communications, realizing a great breakthrough in China ’s century of telecommunications history!
As a leader and major contributor to 3GPP TDD technology and standards, Datang has fully participated in the work of ITU, 3GPP, CCSA and other standardization organizations, and actively participated in the research of TD-LTE technology and standards. Based on the long-term development of TD-SCDMA and TD-LTE and the attitude of being responsible to the industry, Datang Mobile has undertaken a lot of basic research and evaluation work to ensure the quality and integrity of the standard. Among them, Datang first proposed the TD-LTE multiple access technology solution, which promoted the integration of the TDD frame structure and unified the TDD mode; in addition, it also promoted the application of independent intellectual property rights beamforming technology in the LTE system, pioneering Proposed dual-stream beamforming to achieve perfect integration of MIMO and smart antenna technology in TD-LTE; in the standardization process, 3774 RAN alone submitted 3,774 manuscripts and applied for more than 2,000 patents. In January 2012, as an important part of LTE-Advanced, the TD-LTE-Advanced developed by China has become the international standard for 4G. This indicates that after the 3G standard, China is still in the forefront of the world in the field of mobile communication standard formulation.
As the proposer of TD-SCDMA / TD-LTE / TD-LTE-Advanced technical standards, the owner of core intellectual property rights, the promoter of industrialization and the carrier of standard evolution, Datang Mobile has always been driven by independent technological innovation and currently has A large number of core technologies of TD-LTE have comprehensive technical advantages in the field of TD-LTE.
With a deep understanding and innovative spirit in TDD technology, the TD-SCDMA characteristic technology was followed and expanded. In 2009, Datang Mobile and China Mobile Communications Corporation jointly proposed the TD-LTE enhanced technology-8-antenna dual-stream beamforming technology. After testing, the performance advantages of the 8-antenna have been proved in the test network, and the performance gain of the 8-antenna is obvious compared to the 2-antenna. Considering the problems of TD-LTE network performance and the continued enhancement of MIMO in the future, the use of mature 8 antennas for outdoor macro base stations has become the first choice for operators.
At present, Datang Mobile has verified and applied a series of innovative technologies in the TD-LTE scale test networks in Nanjing, Ningbo, Fuzhou and other places, all of which have achieved good results, including: uplink MU-MIMO (improving uplink throughput and Spectral efficiency), ICIC technology and upstream IRC technology (suppressing adjacent cell interference and improving edge performance); high-speed algorithms (supporting TD-LTE channel detection and signal demodulation in high-speed motion scenarios), etc.
In addition, Datang Mobile actively promotes the development of new standards and technologies, and has also researched and verified the technology in TD-LTE-Advanced, the evolution standard of TD-LTE. Carrier aggregation is a technology in the TD-LTE-Advanced standard. By aggregating multiple LTE component carriers to form a larger bandwidth, the uplink and downlink peak rates and uplink and downlink edge rates are doubled. This technology can bring a stronger LTE network transmission capability to TDD operators with rich spectrum resources. It is mainly used in dense urban areas with high service density to increase the total capacity of the aggregated carrier group in this area and provide TD-LTE users. Better user experience. After testing and verification, the carrier aggregation technology aggregates two 20MHz bandwidths, and the peak downlink rate can reach 223Mbps (3: 1 timeslot ratio), exceeding the peak rate of the same system bandwidth LTE FDD.
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