The Research And Implementation On 3G Repeater Monitoring System Based On ARM9

As China's mobile communication 3G protocol announcement, the excellent, intelligent and cheap 3G repeater is need for the enhancements of the mobile phone signal in the remote or densely populated areas.3G repeater monitoring system is considered a major difficult of on 3G Repeater. In this paper, many depth study of 3G Repeater Monitoring System had been done, which proposed a design for the 3G repeater monitoring system based on AT91SAM9260.A completely 3G Repeater Monitoring System Design and Implementation has been finished in this paper, including hardware, systems, software three parts.The hardware include the completion of the design and the debug of the 3G-monitoring board which based on AMR9. The ARM chip can be tested whether it can work normally through writing start code for ARM and some small procedures, then finish the design work and testing work on Ethernet interface, master/USB interface, RS232 interface, RS485 interface.The system software includes three parts:U-Boot which is a guide software, linux kernel, ramdisk (root file system). Firstly finish the guide software U-Boot's transplantation, then linux operating system to complete the shear, compile, and ultimately transplanted to AT91SAM9260, and then configure the kernel, modify the necessary source code and compile the kernel, finally, establish root file system (ramdisk), a complete hardware system design has been established.Applications include the implementation of TCP/IP communication and FTP online upgrade; the implementation of the communication between the modules in the repeater through the control of 485 BUS; the data which will be set back from the Repeater by the monitoring board will be finished the AD converter, and will be Analysised that can be reported warning information timely; the monitoring board can be used to set and query every repeater module parameters, and can query the defined by 3G protocol, also can do the communication between modem and PC through FSK wireless transmission modules.ISP programming tools include the research and transplantation of the USB DFU drive and ISP applications, to solve the 8M binary application of rapid programming and finish the work that 1 pc control 7 monitoring board at the same time.