With the analysis among 66 patents, we discovered top 65 key players by total patent application. Samsung Electronics Co., Ltd., Guangdong OPPO Mobile Telecommunications Corp., Ltd., PetroChina Co., Ltd. are dominant in this area. They take 12.12% of the total patent filing.  
Samsung Electronics Co., Ltd.
Guangdong OPPO Mobile Telecommunications Corp., Ltd.
Guangdong Sheng, China
Patent: 3
Beijing Shi, China
Patent: 2
State Grid Corp. of China
Beijing Shi, China
Patent: 2
Datang Mobile Communications Equipment Co. Ltd.
Beijing Shi, China
Patent: 2
Tianjin Kylin Information Technology Corp
Tianjin Shi, China
Patent: 2
Suzhou Inspur Intelligent Technology Co., Ltd.
Jiangsu Sheng, China
Patent: 2
Huawei Technologies Co., Ltd.
Guangdong Sheng, China
Patent: 1
China National Petroleum Corp.
Beijing Shi, China
Patent: 1
China National Offshore Oil Corp.
Beijing Shi, China
Patent: 1
With the analysis among 1 patents, we discovered top 1 start-ups by total patent application.  
Qi An Xin Technology Group, Inc.
Beijing Shi, China
Patent: 1
With the analysis among related 169 patents applied in the last 5 years. We discover 136 most active companies in this area. The fast-growing Beihang University, Chongqing University, Hefei University of Technology take 5.92% of patent filing during this period.  
Beijing Shi, China
Patent: 4
Chongqing Shi, China
Patent: 3
Hefei University of Technology
Anhui Sheng, China
Patent: 3
Beijing Institute of Technology
Beijing Shi, China
Patent: 3
Samsung Electronics Co., Ltd.
Xi'an University of Technology
Shaanxi Sheng, China
Patent: 3
Nanjing University of Aeronautics & Astronautics
Jiangsu Sheng, China
Patent: 3
South China University of Technology
Guangdong Sheng, China
Patent: 3
East China University of Science & Technology
Shanghai Shi, China
Patent: 2
Beijing Shi, China
Patent: 2
With the analysis among related 169 patents in last 5 years, we discover 130 new entrants. Beihang University, Chongqing University, Hefei University of Technology are the most active new entrants in this area.  
Beijing Shi, China
Patent: 4
Chongqing Shi, China
Patent: 3
Hefei University of Technology
Anhui Sheng, China
Patent: 3
Beijing Institute of Technology
Beijing Shi, China
Patent: 3
Samsung Electronics Co., Ltd.
Xi'an University of Technology
Shaanxi Sheng, China
Patent: 3
Nanjing University of Aeronautics & Astronautics
Jiangsu Sheng, China
Patent: 3
South China University of Technology
Guangdong Sheng, China
Patent: 3
East China University of Science & Technology
Shanghai Shi, China
Patent: 2
Beijing Shi, China
Patent: 2
With the analysis among 112 patents, we discovered top 62 universities and scientific research institutions by total patent application. Beihang University, Beijing Institute of Technology, South China University of Technology are dominant in this area. They take 8.93% of the total patent filing.  
Beijing Shi, China
Patent: 4
Beijing Institute of Technology
Beijing Shi, China
Patent: 3
South China University of Technology
Guangdong Sheng, China
Patent: 3
Hefei University of Technology
Anhui Sheng, China
Patent: 3
Nanjing University of Aeronautics & Astronautics
Jiangsu Sheng, China
Patent: 3
Xi'an University of Technology
Shaanxi Sheng, China
Patent: 3
Chongqing Shi, China
Patent: 3
Shanghai Shi, China
Patent: 2
China University of Petroleum (East China)
Shandong Sheng, China
Patent: 2
East China University of Science & Technology
Shanghai Shi, China
Patent: 2