电信领域进入中国PCT申请的技术主题识别与演化分析——基于BERTopic主题模型

Research Topic and Development of PCT Applications Entered China in the Telecommunication Field :An Analysis Based on the BERTopic Model

摘要:

PCT 申请已成为创新者谋求国际专利保护的首要途径，PCT申请只有进入国家阶段，才能体现专利申请人的真实国际专利布局情况。为真实反映针对中国电信领域的技术布局与竞争态势，采集电信领域进入中国国家阶段的中美日韩四国2009-2020年PCT申请的专利摘要文本形成数据集，利用BERTopic主题模型挖掘提取各数据集的技术主题及其发展演化情况。研究发现，电信领域中美日韩进入中国国家阶段的PCT申请中，中国在小区测量技术，美国在图像处理、波束成形、音频元器件技术，日本在无线电信系统和电子元器件技术，韩国在图像视频编码和无线电信系统等技术方向各占优势，并逐渐交叉重叠。

关键词:电信技术;PCT申请;国家阶段;BERTopic;技术主题识别;技术主题演化

Abstract:

PCT application is the primary way for innovators to strive international patent protection. The national phase PCT applications can reflect the real international patent distribution of patent applicants. This study collected PCT data applied from 2009 to 2020 by China, the United States, Japan, and South Korea to form datasets, which have entered the national phase of China in the telecommunication field. Then use 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 South Korea in image video coding and wireless communication system technology.

Key words:Telecommunication Technology; PCT Application; National Phase; BERTopic; Topic Identification; Topic Evolution