Based on the patent database, we analyzed the basic situations, technology development and globalization. Firstly, the paper analyzes situations, including global distribution, regional tendency, patent licensing and maintenance. Secondly, analyses retrieval data from IPC technology. Thirdly, we discussed the global layout. The global development fluctuates with a small range. Since 2009, China has witnessed a rapid development momentum, with a large number of patents but generally low quality. In the next step, we should follow the development of 5G and pay attention to the potential technology.