Technical Topics Identification and Evolution Trend of PCT Applications Entering China in the Telecommunication Field:An Analysis Based on the BERTopic Model
This study collects PCT data applied from 2009 to 2020 by China,the United States,Japan,and the Republic of Korea to form datasets,which have entered the national phase of China in the telecommunication field,then uses the BERTopic model to mine and extract the technical topics and development trends of each dataset to reflect the technical layout and competitive situation.The results show that each country has its own advantages in various technical directions and is gradually showing a trend of overlapping.China has advantages in community measurement technology,the United States in image processing,beamforming and audio component technology,Japan in wireless communication systems and electronic component technology,and the Republic of Korea in image video coding and wireless communication system technology.According to the study findings,this paper proposes of R&D advice that innovative entities in China's telecommunications industry should continue to focus on infrastructure construction,expand application technology development,and strengthen international cooperation.
telecommunication technologyPCT international applicationnational phaseBERTopictopic identificationtopic evolution
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