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Method for communication between dispatching / monitoring center and terminal in vehicle GPRS networks

A monitoring center and terminal technology, applied in road vehicle traffic control systems, transmission monitoring, traffic control systems, etc., can solve problems such as high cost and communication difficulties, and achieve the effect of reducing the number of transmissions and costs.

Inactive Publication Date: 2004-12-29
SHANGHAI FLEETY COMM
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for communication between the dispatching / monitoring center and the terminal in the vehicle GPRS network, so as to overcome the defects of the prior art such as difficulty in communication between the two parties and high cost

Method used

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  • Method for communication between dispatching / monitoring center and terminal in vehicle GPRS networks

Examples

Experimental program
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Embodiment Construction

[0017] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] The dispatching / monitoring center in this embodiment uses a Modem that supports SMS and GPRS to access the GPRS network, and configures its MSISDN to the terminal to send short messages.

[0019] As shown in the flowchart, the Server starts and sends MSG-UDP information to all terminals. There are two threads in the center that are in the state of SMS monitoring and TCP monitoring respectively; Received MSG-UDP message in the last operation; if MDT saves Server information, it can read the IP address and port of the center to establish a TCP connection with Server, otherwise, if the center information is not saved, MDT will send MSG-SMS message to Server; After receiving the MSG-SMS message, the Server sends its own IP address and port to the MDT through the MSG-UDP message. If the MDT receives the MSG-UDP message from the Server with...

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Abstract

The invention discloses a method for communication between dispatching center and terminals in a vehicle GPRS network comprising the steps of, the center starting and checking whether the center information is stored, if the terminal stores the center information, then execute step 5, otherwise sends MSG-SMS to the center, the center receives the message and sends its own IP address and port to the terminal, the terminal receives the SMG-UDP of the center within a finite time and execute the next step, otherwise sends MSG-SMS to the center, 0the terminal establishes TCP connection with the center for normal communication, otherwise sends message to the center continuously.

Description

technical field [0001] The invention belongs to the GPRS network communication technology, and particularly relates to a method for communication between a vehicle dispatching / monitoring center and a terminal after they are connected to the GPRS network. Background technique [0002] At present, with the development of wireless communication technology towards broadband, more and more businesses use wireless communication networks for data communication. In the vehicle dispatching / monitoring service industry, some vehicles are equipped with vehicle terminals (including positioning modules and wireless data communication modules ) vehicles have begun to send their own geographic location information to the dispatch / monitoring center through the GPRS network. However, the current dispatching / monitoring center access network is Internet, which requires a legal IP address. In addition, some users are also worried about the security of the Internet, so they hope that the center c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/00H04L29/02H04L29/08H04L29/12
Inventor 吴建俊姚奇戴从荣侯书国黄庆伟江伟庆
Owner SHANGHAI FLEETY COMM
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