JP4956373B2 - Remote monitoring and control device - Google Patents

Description

  The present invention relates to a remote monitoring control system for a mobile communication terminal of a mobile communication network.

  With the development of communication technology and information processing technology, network computing that executes a specific purpose application through the interaction of a plurality of information communication devices connected to a communication network has been realized.

  As an example of network computing, a monitoring control system is known in which a device installed at a remote place and a control device that controls the device are connected by a communication network. More specifically, as an existing remote control system, a terminal device having a function of receiving an electronic mail via a mobile communication network is connected to a device to be controlled, and the remote control device such as a mobile communication terminal is used. There is known a remote control system that controls a device to be controlled by transmitting a control command to the device to be controlled by using an electronic mail (for example, see Patent Document 1).

  As another example of network computing, a remote control device is controlled by using a mail short message service (SMS) that can send and receive text-based messages between mobile communication terminals in a mobile communication network. A remote control system that controls a mobile communication terminal by transmitting a control command to the mobile communication terminal is known (for example, see Patent Document 2).

Japanese Patent Laid-Open No. 2003-44416 (pages 5-7, FIG. 1) JP 2002-77372 A

  However, the conventional remote control system has the following problems. That is, the conventional remote control system using electronic mail uses a data communication service or a voice communication service provided by a mobile communication network between a terminal connected to the device to be controlled and the remote control device. Therefore, there is a problem that monitoring and control cannot be performed without hindering provision of voice communication service and data communication service. In particular, this problem has become apparent in recent years because the number of service provision modes by always-on connection has increased. Further, when the mobile communication terminal is a monitoring target, it is necessary to control the mobile communication terminal 16 by directly connecting the monitoring control terminal 18 to the mobile communication terminal 16 and inputting a control command such as an AT command as shown in FIG. . For example, when performing ubiquitous modules that are not always carried by users (for example, mobile communication terminals that are fixedly installed as communication means in devices such as vending machines), whether or not there is a failure and reference / setting of setting information must be performed. The maintenance person had to rush to the installation location of the ubiquitous module with the monitoring control terminal. Furthermore, in the case of a fixed installation ubiquitous module, a change in the surrounding environment (such as a building being built in the vicinity or parking of a large vehicle) may cause a degradation of the wireless environment that temporarily has a significant adverse effect on communication. However, in this case, in order to investigate the cause, the voice communication service and data communication service that should be provided as a communication means of a device such as a vending machine are stopped for a long time regardless of day or night, and instead the wireless reception strength in the mobile communication terminal is increased. There was a problem that it had to be used as a communication means for monitoring.

  Further, in the conventional remote control system using SMS, since the amount of information (SMS transmission capacity) that can be transmitted by one SMS is limited, the amount of control command to be transmitted / received or the information amount of the execution result of the control command However, there is a problem that if the amount exceeds the SMS transmission capacity, it is impossible to transmit by one SMS.

  The present invention has been made in view of such problems, and an object of the present invention is to remotely monitor and control a mobile communication terminal without hindering provision of a voice communication service and a data communication service in a mobile communication network. To provide a remote monitoring control device, a mobile communication terminal, and a method. Another object of the present invention is to provide a remote monitoring control device, a mobile communication terminal, and a method for remotely monitoring and controlling a mobile communication terminal without connecting the monitoring control terminal to the mobile communication terminal. A remote monitoring control device capable of transmitting and receiving the control command or the execution result of the control command even when the amount of information of the control command to be transmitted or received or the execution result of the control command is larger than the SMS transmission capacity in one SMS; It is to provide a mobile communication terminal and method.

  In order to achieve such an object, the present invention provides a remote monitoring and control device and a mobile communication terminal according to the present invention, a service channel for providing services such as a voice communication service and a data communication service in a mobile communication network, Comprises means for transmitting and receiving a control command or information on the execution result of the control command as a text message having a predetermined maximum communication capacity transmitted and received via different channels. This enables remote monitoring control without disconnecting data communication such as voice communication and mail transmission / reception of the mobile communication terminal in the mobile communication network.

  In addition, the remote monitoring control device and the mobile communication terminal according to the present invention have a control command composed of a command and a parameter accompanying the command, and the information amount of the execution result of the control command is larger than the maximum transmission capacity of one text message. In the case where the number of control commands increases, a unit for dividing the control command and the execution result of the control command into a plurality of control commands, distributing each control command into one text message, and transmitting / receiving sequentially is provided. This makes it possible to transmit and receive a large amount of information for supervisory control while avoiding the occurrence of burst traffic.

  In one embodiment, the mobile communication network may be an IMT-2000 network and the text message may be a control SMS message in an SMS usable in the IMT-2000 network.

  In one embodiment, the control command may be a command that is executed sequentially (sequential execution type command). For example, by configuring the control command as an AT command, remote monitoring control using the existing IF of the mobile communication terminal becomes possible.

  The remote monitoring control system and mobile communication terminal of the present invention have a predetermined maximum communication capacity that is transmitted and received through a channel different from a service channel for providing services such as voice communication service and data communication service in a mobile communication network. Remote monitoring control is possible without disconnecting data communication such as voice communication and mail transmission / reception of mobile communication terminals in the mobile communication network by sending and receiving control commands or information on the execution results of the control commands as text messages. Become. Further, remote monitoring control can be performed without connecting a monitoring control device to the mobile communication terminal. Further, even when the control command to be transmitted / received or the information amount of the execution result of the control command exceeds the maximum communication capacity of one text message, remote monitoring control is possible.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 2 is a schematic configuration diagram of a remote monitoring control system in which the remote monitoring control apparatus 200 and the mobile communication terminal 300 according to the present embodiment are connected to each other via the IMT-2000 network 14.

  The remote monitoring and control apparatus 200 and the mobile communication terminal 300 that is the object of monitoring control send control commands or information on the execution results of the control commands via the IMT-2000 network 14 to control SMS (hereinafter simply referred to as control SMS). And send and receive. The control SMS can be distinguished from the SMS used for other purposes by setting the value of TP-UDHI (Transfer Protocol-User Data Header Indicator) in the header of the SMS format. It is received and identified as a special type of SMS.

  The IMT-2000 network 14 includes an SMS center (SMSC) that controls SMS transmission / reception, an exchange 24, and a radio transceiver 26. The SMS is transmitted / received via a channel different from a service channel for providing services such as a voice communication service and a data communication service in the IMT-2000 network.

FIG. 3 is a block diagram of the remote monitoring control device 200 and the mobile communication terminal 300 according to the present embodiment.
The remote monitoring and control apparatus 200 according to the present embodiment is generated by an AT command generation unit 202 that generates an AT command statement that is a control command statement for monitoring and controlling the mobile communication terminal 300, and an AT command analysis unit 204. AT command / SMS conversion unit 206 that converts the AT command statement into an AT command statement suitable for storage in the SMS, and an SMS generation unit that generates the SMS using the AT command statement converted by the AT command / SMS conversion unit 206 208, an SMS transmission control unit 210 that transmits the generated SMS, an SMS reception unit 212 that receives an SMS storing information of a control response result (execution result of an AT command) from the mobile communication terminal, and a received control response An SMS response result processing unit (not shown) for processing the SMS storing the result information, and the received control response connection Comprising the response result holding unit 214 for holding information, and a response result output unit 216 to output the display such information received control response result.

  The SMS transmission control unit 210 controls SMS transmission so as to avoid burst traffic associated with multiple SMS transmissions by split transmission.

  Each of the SMS transmission control unit 210 and the MS reception unit 212 transmits and receives SMS to and from the SMS center (SMSC) 22 provided in the IMT-2000 network 14.

  The mobile communication terminal 300 according to the present embodiment includes an SMS receiving unit 302 that receives an SMS storing an AT command transmitted from the remote monitoring control device 200 via the IMT-2000 network 14, and an SMS that analyzes the received SMS. An analysis unit 304, an AT command analysis unit 306 that analyzes the received AT command in the SMS, an AT command execution unit 308 that executes the analyzed AT command, and a conversion unit that converts the execution result of the AT command into SMS 310 and an SMS response unit for notifying the converted remote monitoring control device of the SMS converted from the execution result of the AT command.

  In the present embodiment, the SMS receiver 302 and the SMS response unit are shown as one block having a function of transmitting and receiving SMS via the wireless transceiver 26 provided in the IMT-2000 network 14, but each is independent. Needless to say, it can be configured as a block.

Next, operations of the remote monitoring control device 200 and the mobile communication terminal 300 according to the present embodiment will be described.
FIG. 4 is a sequence diagram showing the operation of the remote monitoring control system including the remote monitoring control apparatus 200 and the mobile communication terminal 300 according to the present embodiment.

  In operating the remote monitoring control apparatus 200 according to the present embodiment, an operator first inputs command selection information for identifying monitoring / control to be performed on the mobile communication terminal 300 and the telephone number of the mobile communication terminal 300. Enter from. That is, the AT command generation unit 202 of the remote monitoring control apparatus 200 receives the mobile communication terminal monitoring control request including the command selection information and the telephone number of the mobile communication terminal 300 that is the monitoring control target, and stores it in a storage means such as a memory. (Step 400).

  Next, the AT command analysis unit 204 analyzes the command selection information (step 404). More specifically, the AT command analysis unit 204 interprets the command selection information and outputs a corresponding AT command and parameters associated with the AT command.

  The AT command generation unit 402 generates an appropriate AT command sentence using the AT command that is the analysis result of the AT command analysis unit 204 and the parameters accompanying the AT command (step 406).

  Next, the SMS conversion unit 206 converts the AT command sentence generated by the SMS generation unit 202 into an SMS format that enables transmission to the mobile communication terminal (step 408), and transmits the SMS transmission control unit. To 210. More specifically, the SMS conversion unit 206 determines whether or not the information amount of the AT command statement generated by the SMS generation unit 202 is larger than the maximum transmission capacity of the SMS. The command information is divided into a plurality of the following information amounts (step 410). For example, an AT command statement includes an AT command for performing reading or writing on a plurality of memory areas provided in the mobile communication terminal 300, and a plurality of parameters (parameters 1, 2,. In some cases, by dividing a parameter, a plurality of divided AT command statements (AT command and parameter 1 consisting of AT command and parameter 1, AT command Command statement 2 consisting of parameter 2...

  Further, the SMS conversion unit 206 sets the telephone number of the mobile communication terminal 300 included in the mobile communication terminal monitoring control request as the transmission destination of the header in the SMS format, and further transmits / receives text information between the mobile communication terminals. In order to distinguish from SMS, it sets to control SMS.

  The SMS transmission control unit 210 sequentially transmits SMS so as not to transmit a plurality of SMSs each including an AT command sentence divided (steps 412 and 414). That is, the SMS transmission control unit 210 transmits one SMS, and after receiving a response to the SMS from the mobile communication terminal 300 (step 434), transmits one next SMS.

  The IMT-2000 network relays the SMS transmitted from the remote monitoring control device 200 to the mobile communication terminal 300 (step 416).

  The SMS receiver 302 of the mobile communication terminal 300 receives the SMS and stores it in a storage means such as a memory (step 418).

  Further, the SMS analysis unit 304 analyzes the contents of the received SMS (step 420). More specifically, the SMS analysis unit 304 determines whether or not the received SMS includes an AT command statement. If the AT command statement is further included, the SMS analysis unit 304 inputs the AT input in the remote monitoring control device 200. The command statement is analyzed, and the analysis result is passed to the AT command execution unit 308 together with the accompanying parameters for executing the AT command obtained from the analysis. If the received SMS does not include an AT command statement, the SMS response unit 302 transmits an SMS response signal indicating that the SMS has been received to the remote monitoring control device 200 (step 432).

  If the result of analysis by the SMS analysis unit 304 is that an AT command statement is included, the AT command execution unit 308 executes processing according to the AT command statement and outputs the execution result (step 426). For example, the AT command is stored in the memory area provided in the mobile communication terminal 300, the radio wave reception level or communication quality information, the mobile communication terminal setting information, the mobile communication terminal change history information, or the mobile communication terminal itself If the instruction is to read information such as health check result information (hereinafter referred to as mobile communication terminal related information), the information stored at the memory location identified by the parameter associated with the AT command is read and the execution result Can be returned as

  The SMS conversion unit 310 converts the execution result output from the AT command execution unit 308 into SMS (converts to the SMS format), and passes the result to the SMS response unit 302 (step 428). More specifically, the SMS conversion unit 310 determines whether the information amount of the execution result returned from the AT command execution unit 308 is larger than the maximum transmission capacity of the SMS, as with the SMS conversion unit 206 of the remote monitoring control device 200. If it is determined to be larger, the execution result is divided into a plurality of pieces (step 428).

  The SMS response unit 302 stores the execution result converted into the SMS format in the SMS response signal, and a flag indicating the sequence number or the last SMS in the header of each SMS storing the divided execution results. (Step 430). Thereby, the remote monitoring and control apparatus 200 can determine whether or not all information of the execution result of the transmitted control command has been received from the mobile communication terminal 300. Alternatively, the remote monitoring and control apparatus 200 stores the number of SMS to be received in order to receive all of the execution results of the transmitted control command in a storage unit or the like in advance, and after transmitting the control command, the mobile communication terminal 300 It may be configured to determine whether or not all of the control command execution results have been received by counting the number of SMS received from. Next, the SMS response unit 302 transmits the execution result converted into SMS to the remote monitoring control device 200 as an SMS response signal (step 432).

  The IMT-2000 network relays the SMS response signal transmitted from the mobile communication terminal 300 to the remote monitoring control device 200 (step 434).

  The SMS receiver 212 of the remote monitoring control device 200 receives the SMS response signal transmitted from the mobile communication terminal 300 (step 434). More specifically, the SMS receiving unit 212 determines whether or not all of the control command execution results have been received, and temporarily stores the received SMS until the last SMS is received.

  Furthermore, after receiving the last SMS, the SMS receiving unit 212 is performing sequential transmission in which the SMS transmission control unit 210 sequentially transmits SMS, and whether there is a subsequent SMS storing a control command to be transmitted. Is determined (step 436). If sequential transmission is being performed and there is a subsequent SMS storing a control command to be transmitted, steps 412 to 436 are repeated.

  When there is no subsequent SMS storing the control command to be transmitted by the SMS transmission control unit 210, the SMS reception unit 212 receives (extracts) the execution result of the control command from all received SMS response signals (step 438). Then, the execution result of the control command extracted by the response result holding unit is held (accumulated) in the database (DB) in the system (step 440), and the response result output unit 216 stores the execution result of the held AT command. A display is made so that it can be visually confirmed (step 442).

  As described above, according to the remote monitoring control system of this embodiment, remote monitoring control can be performed without disconnecting data communication such as voice communication and mail transmission / reception in the IMT-2000 network. In the case of emergency ubiquitous modules, many of the tasks that have been required to be handled locally, such as communication failures, changes to mobile communication terminal settings, and investigations of surrounding wireless environments, Reference / setting of setting information and storage / collection of wireless environment log data can be remotely controlled. Furthermore, even when the amount of information of the control command to be transmitted / received or the execution result of the control command exceeds the maximum transmission capacity of one SMS, execution of the control command or the control command is avoided while avoiding occurrence of burst traffic. You can send and receive results.

It is a figure for demonstrating schematic structure of the conventional remote monitoring control system. 1 is a diagram illustrating a schematic configuration of a remote monitoring control system in which a remote monitoring control device and a mobile communication terminal according to an embodiment of the present invention are connected to each other via a mobile communication network. It is a figure which shows the functional block of the remote monitoring control apparatus and mobile communication terminal concerning one Embodiment of this invention. It is a figure which shows the process sequence in the remote monitoring control system with which the remote monitoring control apparatus and mobile communication terminal which concern on one Embodiment of this invention were mutually connected by the mobile communication network.

Explanation of symbols

14 Mobile communication network, IMT-2000 network 200 Remote monitoring and control device 300 Mobile communication terminal

Claims (5)

A remote monitoring and control device connected to a mobile communication network for transmitting and receiving a text message having a predetermined maximum communication capacity via a channel different from a service channel, and remotely monitoring and controlling a mobile communication terminal of the mobile communication network,
Command generating means for generating a control command statement having a control command to be executed in the mobile communication terminal;
It is determined whether the generated control command statement is larger than the maximum transmission capacity of the text message, and if so, the generated control command statement is less than the maximum transmission capacity each including the control command. Command / text message conversion means for dividing the information command into a plurality of control command statements, and using each of the divided control command statements as the text message;
Transmission control means for transmitting a plurality of text messages including the divided control command statements to the mobile communication terminal;
Remote monitoring control, comprising: response result text message receiving means for receiving a response result text message including an execution result of the divided control command statement executed in the mobile communication terminal from the mobile communication terminal. apparatus.   The transmission control means transmits one of a plurality of text messages including the divided control command statement to the mobile communication terminal, and moves the response result text message corresponding to the transmitted one text message to the mobile The sequential transmission of the plurality of text messages is performed by repeatedly transmitting another one of the plurality of text messages to the mobile communication terminal after receiving from the communication terminal. The remote monitoring and control device described.   The remote message according to claim 1, wherein the text message having the predetermined maximum communication capacity is a message in a short message service used in the mobile communication network, and the control command is a sequential execution type command. Supervisory control device.   2. The remote monitoring control apparatus according to claim 1, wherein the control command statement is a command for reading mobile communication terminal related information stored in a storage unit of the mobile communication terminal.   The remote monitoring control apparatus according to claim 1, wherein the response result text message is mobile communication terminal related information stored in a storage unit of the mobile communication terminal.

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