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It proposed a method of combining the two types of data service CSD and GPRS based on GSM applied to GPS vehicle real-time monitoring and alarming system. Based on this method, basic constitution and network structure of the system is given out, and then it implements the CSD and GPRS hardware interface and software flow based on the GR47 wireless communication module. Arm embedded system was used...
A method of combining the two types of data service CSD and GPRS based on GSM applied to GPS vehicle real time monitor system was proposed. The network structure of the system above was put forward. Then it implements the CSD and GPRS hardware Interface and software flow based on the ERICSSON GR47 communication module. Compared with conventional single mode of GPRS, this method makes up the disadvantage...
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