Research And Design Of Under-mine Mobile Communication Terminal Based On SIP Protocol

Safety is the permanent themes of mine production. Under-minecommunication system is the important parts of production scheduling andsecurity maintaining， while efficient、 real-time and smooth under-minecommunication play a decisive role to ensure mine safety in production. Thesame time as the continuous expansion of under-mine mining face， theconstruction， the maintenance and the number of wired access points oftraditional means of communication suffer from severely limited. With thesefactors before us，it is a meaningful thing for us to research a under-minemobile communication terminal.This dissertation is based on the specific project of “KJP100minemoving target safety monitoring system integrated business platform”. Underthe condition of the full analyzing of the current mine safety monitoringsystem，deeply research the SIP(Session Initiation Protocol) Protocol andcombined with the embedded technology， this dissertation proposes aunder-mine mobile communication solutions based on this protocol. The maincontent of this dissertation has：1. To review the current situation of the under-mine communication， anddeeply analysis some relative theory of the SIP protocol、 the messagemechanisms、signal processing and some key technologies；Emphasis onresearching the management mechanism of the SIP transaction status machineand the process of session.2. Focus on analysis and verification the feasibility of the SIP protocolused in the under-mine mobile communication，and to build the hardware andsoftware platform which set the S3C2410of ARM9as the core，and transplantthe open-source Linux as the operation system. Propose the overall designprogram of the communication terminal combined with the SIP protocol andspecific needs of the project，and complete the software development workunder the program.3. According the design objective of the terminal，building experiment totest the performance of session and mobility and other performance between the communication and PC terminal. The test results verified that the designconcept and development program in this dissertation is reasonable andcorrect.