Research of the Measurement of Patent-intensive Industry Technology Lock-in from the Perspective of TML

As the core industry of technological innovation capabilities, patent-intensive industries, cultivating their rapid development is conducive to breaking the "technological lock-in" and realizing my country's independent innovation in the core technology field. Based on the INNOJOY patent database, the wireless communication network patent was selected as the research object, and the subjective and objective weighting method and the growth rate cycle index synthesis method were used to measure the technical lock-in from the perspective of TML. The study found: (1) The technology lock-in index of the United States, Japan, and South Korea generally shows an upward trend, while the technology lock-in index of China has a trend of declining volatility, and the United States has the highest degree of lock-in in the field of wireless communication network technology, ranking first. Japan is in the second position, South Korea is in the third position, and China is in the fourth position; (2) The six core technologies identified belong to American companies. The public years are concentrated in 2017 and 2019, and the technical field is concentrated in H04W72/04 ( The same data transmission method and user equipment), H04W72/08 (signaling for proximity service and D2D discovery in LTE networks), and H04L1/00 (method to support channel allocation information for uplink and downlink channels) And these three core patents show that the current three core technologies are cutting-edge technologies in the field of wireless communication networks.