Electronic communication:
Communication architecture
Data Center and Big Data Computing
Point to point computing and communication
Multimedia and Real time Networking
Algorithms, Modeling, and Evaluation
Sensors/Embedded Networks and Ubiquitous Computing
Network testing and deployment
Delay tolerant network
Network testing and deployment
Scheduling and buffer management
Network based on smart antenna
6G Vision and Potential Key Technologies
Internet of Things and Sensor Networks
Next Generation Network and Internet
Trust, Security, and Privacy
Artificial Intelligence and Machine Learning
Data Science and Big Data Systems Engineering
Cloud computing, networking, and storage
Wireless and mobile networks
Green Communication Systems and Networks and Other Themes
semiconductor:
Magnetic semiconductor
Organic semiconductor
Advanced photoresist
Optoelectronics and photovoltaic devices
Semiconductor physics
Semiconductor quantum computing
Reliability of Semiconductor Materials and Devices
Semiconductor Manufacturing and Applications
Emerging semiconductor technologies
3D semiconductor device technology, etc
electronic information engineering:
power electronic technology 
Communication signal processing
Radar Engineering
digital signal processing 
Microwave Technology and Antennas
Electromagnetic Fields and Waves
Signal and Image Processing
Automatic control and intelligent control
Computer and Network Technology
Network and Office Automation Technology
multimedia technology
Microcontroller technology
Electronic System Design Process
Electronic Design Automation (EDA) Technology
digital signal processing