The Design and Implementation of Multi-level Communication Network without Bases Stations

This article describes the communication with no fixed centers of base stations, and the establishment of a multi-level communication network via the wireless module,which enables the communication of data between the control center and the front end of two-way transmission. This project uses TDMA communication mechanism. The control center sends commands to each communication terminal, and receives the corresponding data in a fixed time slot. Experiments show that when the communication nodes within a certain amount, the communication system has a better effect on communication, which is suitable for application in underground mining mine, field rescue and other communications without base stations.