MIMO, OFDM, software radio is the key to achieve performance requirements of 4G technology, the three themes for the future 4G standards will constitute the underlying patents, the patent to understand the situation of these key technologies for 4G patent predict competitive situation is important.
Communication in the field of patent protection by the product evolved into profitable products. The traditional model, innovative technology products to maintain market position through patent protection, and as communications giant business model change, the patent directly into profitable products. This change to the traditional model of business enterprise to bring pressure, but also to make industry more concerned about the patent.
Currently many of the competitive situation on the patent judge also based on the technology of empirical judgments, that there exist major problems. Complex changes in communication technology in duplex mode, frame size, working conditions, and other emerging new technologies emerging, together with the patent claim writing skills according to the application time, protect the technical programs and other technical elements of the portfolio, the degree of importance between the patent very large, an important basis for the validity of the patent will be greater than several hundred pieces of ordinary patent, only through empirical analysis of combined expertise in order to obtain consistent and objective conclusions. Therefore, empirical analysis of patent patent for a clear competitive situation, so it is only scientific solution.
Imagine the future 4G standard will also form a variety of competitive situation, different technical standards to co-ordinate the use of the underlying technology to form their own standard framework. Patent on the standard system for analysis of competitive situation is extremely complex, in which the underlying technology patents in the patent situation is a key indicator of the overall conclusions drawn, so thus far, MIMO, OFDM, software radio patent situation of these underlying technologies Duiyu predict 4G patent competitive situation has become more important.
MIMO patents: China is the fourth largest country original
Number of patents based on the current MIMO about 4400, the number of patents around the world MIMO grown rapidly, especially after 2000, in China's first piece of patent applications on MIMO CN01101314 Lucent by the United States to the United States in 2001 on the priority " MIMO wireless systems, space-time processing ", this patent is currently authorized to remain in force. The figure after 2007 the decline in the number of patents because patent applications due to delay in public, should still consider the trend of the current trend of rapid development.
MIMO-monopoly is low, with more than 100 patents over the sector total only 20% of overall number of patents, technology has a large number of applicants in the hands of small and medium. China's ZTE and Huawei, the number of applications in the 50 or so, the gap distance of the top ten institutions are not too large, and the remaining 70 enterprises, universities, individuals applied for a patent. MIMO technology in China-related patent applications, foreign applications to China more than the number of domestic applications, domestic applications increased rapidly in recent years, starting in 2006 in China for foreign applications have been flat.
China is now the fourth largest country MIMO original patent, the applicant's patent applications in China accounted for about 6% of world total, second only to the United States, Japan, South Korea. Priority in the Chinese patent application filed in about 20% for foreign applicants, which indicates that large multinational companies with foreign R & D base in China as output a lot of technology, especially Japan and South Korean companies such as Panasonic, Samsung, NEC, Nippon Telegraph and Telephone Corporation.
OFDM patents: not monopoly
Currently, OFDM technology is not completely dominated by large multinational organizations, with more than 100 patent agencies accounted for all of the patent for 40% of the total, in the magnitude of China's Huawei and ZTE have such a large-scale enterprises, with the number in 20-100 patent agencies accounted for 20% of the total, in the magnitude of a group of universities and enterprises in China such as Tsinghua University, Beijing University of Posts and Telecommunications, Shanghai Jiaotong University, Xi'an University of Electronic Science and Technology and Beijing Creative Video Technology Co., Ltd. on the high sea shells Communications and Electronics Limited. 6-20 pieces of this magnitude account for about 16% of the total, of which there Xi'an Jiaotong University in China, Datang and other institutions.
OFDM patent situation in China should be the most public concern, the first application in 1994 of two foreign countries come to China for CN94103352/CN94193326, the applicants were Panasonic and Thomson, Germany - Blount Company, the two patents have been authorized. Matsushita patent CN94103352 which has produced 13 divisional application, of which 5 are currently authorized, the rest are still under review. In 1998, OFDM was not previously subject of domestic patent applications, the first domestic applications in 1999, Sichuan Changhong applications HDTV digital television transmission system, the patent-CN99124605, this application was authorized in 2004 and by reviewing the effective date.
1994 to 2005, the number of foreign applications has been leading China domestic applications, but in recent years the development of domestic applications faster, from more than 2006 foreign to China for domestic applications, and maintain high growth.
Currently, Samsung, Panasonic, Qualcomm, Sony, Toshiba has a traffic rank OFDM patents in the world. Compared to large enterprises in China ZTE and Huawei's patent application number over 120, with the gap between the top ten companies is not too much to maintain the current momentum into the future should be able to patent ownership is the top place.
Software Radio Patents: too few general
Software radio is the use of digital signal processing software wireless technology, can use the same hardware platform, software processing baseband signals, by loading different software, different business performance can be achieved.
Currently, the software is generally not protected by patents granted in China for patent applications involving computer programs, software patent examination according to relevant provisions of China's patent law review, the State Intellectual Property Office "review guidelines" related to a specific interpretation of content. For this reason, the software radio on the small number of patent applications. Overall only 300 international articles, more than 50 pieces of Chinese patent applications.
TD-SCDMA systems in China have been using software radio technology, TD TDD mode system and the characteristics of the low chip rate for software radio applications. Domestic software application has some radio experience and practical technology.
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