Abstract: The choice of wireless technology in private network communication needs to be considered comprehensively according to various factors, such as service requirements, wireless technology characteristics and the original investment and construction situation. Firstly, this paper analyzes some typical service requirements of wireless private network, and then analyzes the main wireless technology and technical characteristics used in wireless private network environment.Taking rail transit application scenario as an example, this paper analyzes the relationship between service requirements and bearer technology, and analyzes the selection and comparison of wireless technology in private network communication.

Key words: private network, wireless technology, TETRA, LTE, WLAN