KR20000008526A - Parameter download error prevention device for wireless call data satellite transmitting system and control method thereof - Google Patents

Abstract

PURPOSE: An error preventing device and the control method are provided to prevent that the error generates in a system by downloading a wrong parameter during the parameter download of the wireless call data satellite transmitting system. CONSTITUTION: The error preventing device of the parameter download comprises: a GUI input unit(41) to charge a graphic process; a verification unit(42) of each independent download parameter to verify parameters of each sub-system by receiving a command from the GUI input unit(41); an alarm driving unit(43) to take the check by an operator or by a user by displaying in a GUI screen according to the result value of the verification unit(42).

Description

Parameter download error prevention device and control method of radio call data satellite transmission system

The present invention relates to a radio call data satellite transmission system. In particular, when an error occurs when a parameter is downloaded when a parameter is downloaded from a radio call data satellite transmission system, the system is displayed on the GUI (Graphic User Interface) screen and downloaded. The present invention relates to an apparatus and a control method for preventing a failure of a system through a verification process.

In general, a radio call data satellite transmission system is a system for transmitting radio call data through a satellite, and is a one-way data transmission system in which a path between base stations is replaced by a link using a satellite in a conventional leased line in a TDX-PS.

1 is a block diagram of a general radio call data satellite transmission system.

As shown therein, the central station 10 receives the radio call signal and modulates the radio call signal to the satellite; The base station 10 is composed of a plurality of base stations 30 for receiving and restoring radio call signals transmitted from satellites.

In the above, the central station 10 of the radio call data satellite transmission system includes a subscriber matching unit (PCIB) for converting an analog paging signal into a digital signal using a frequency shift keying (FSK) of the exchange. )Wow; A channel card (QSP, Quad Synchronous Processor) 13 for synchronizing the clocks of the channel input / output data of the subscriber matching unit 11 and compensating for the deviation between the system clock and the reception clock; A multiplexer 12 connected to multiplex signals of a digitally switched exchange having an interlink (ILC) 14 to process data between a channel and an intermachine link; A modulator (15) for modulating the baseband signal input from the multiplexer (12) to output a signal of an intermediate frequency band; A radio frequency transmitter (RF) 16 for transmitting an intermediate frequency band signal input from the modulator 15 to a satellite as a high frequency signal; A network control unit (NCL) connected to the multiplexer 12 to perform control of the multiplexer 12; It is connected to the subscriber matching section 11, the modulating section 15, the high frequency transmitting section 16 and the network control section 17, and is responsible for the respective control, and periodically polling the state of each device Local PCCB (18) to transmit to the master PCCB 19, the control information transmitted from the Network Management System (NMS, Network 20) to each device of the central station 10 (Paging Central Control Block) (18) Wow; It is connected to the local PCCB 18 and collects the state information of the terminal station collected by the base station control unit 38 of the base station 30 as well as each device of the central station 10 to transmit to the network management unit 20. A master PCCB 19; A center PCCB (20) connected to the master PCCB (19) for performing communication between the central station (10) and the base station (30); A modem 21 for transmitting / receiving data to / from a base station connected by a dedicated line according to a communication execution command of the center PCCB 20; Connected to the master PCCB 19, it is composed of a network management unit 22 for managing the configuration and status of the entire radio call data satellite transmission system.

In addition, the base station 30 of the radio call data satellite transmission system, the high-frequency receiver 31 for low-noise amplifying the signal received from the satellite and converts it into an intermediate frequency signal; A demodulator (32) for restoring a signal output from the high frequency receiver (31) to an original signal; An interlink 34 connected to the demodulator 32 to demultiplex data from a signal demodulated by the demodulator 32, and a link between the interlink 34 to compensate for a deviation between a system clock and a reception clock; A demultiplexer 33 having a channel card 35 for demultiplexing a signal transmitted from a satellite into a digital signal; A Paging Remote Interface Block (PRIB) 36 for restoring digital data of the demultiplexer 33 to an FSK analog paging signal; A network controller 37 connected to the demultiplexer 33 to control the demultiplexer 33; The demodulator 32, the demultiplexer 33, and the subscriber subscriber matching unit 36 periodically collect states and transmit them to the center PCCB unit 20 through the modem 21 of the central station 10. And a base station controller (PRCB, Paging Remote Control Block) 38 that controls the devices of the base station 30 according to the command of the network manager 22.

The operation of the general radio call data satellite transmission system configured as described above is as follows.

First, the central station 10 of the radio call data satellite transmission system converts an FSK analog paging signal transmitted from a TDX (Time Division Multiplexing) -PS switch, which is a paging data exchanger, into a digital signal in the subscriber matching unit 11 and multiplexes the multiplexer 12. To be entered. Then, the multiplexer 12 synchronizes the clocks of the channel input / output data in the channel card 13, compensates for the deviation between the system clock and the reception clock, and then, in the interlink 14, between the channel module and the intermachine link. Will process the data. By encoding and modulating with binary phase shift keying (BPSK), an intermediate frequency (IF) signal having a bandwidth of 250 KHz / 500 KHz is transmitted to the high frequency transmitter 16.

Then, the high frequency transmitter 16 inputs the output signal of the modulator 15 to the attenuator to be controlled by the uplink power control (UPC) and the beacon receiver, and performs the redundancy control to be transmitted to the outdoors. The signal transmitted to the outdoors is distributed by the outdoor power distributor and transmitted to the transmitter. Then, the transmitter is amplified to a predetermined uplink frequency and power level, and the signal of the outdoor transmitter selected by the waveguide switch is connected to the feeding part of the antenna by the object modeling technique (OMT) to emit radio waves to the satellite.

Accordingly, the plurality of base stations 30 of the radio call data satellite transmission system low-amplify the small signal of 12.25 ~ 12.75GHz received from the satellite in the high frequency receiver 31 and converts it into an IF signal of 950 ~ 1450MHz. The demodulator 33 restores the original data by BPSK demodulation, descrambling, discrete decoding, and R = 1/2 k = 7 Viterbi decoding. .

The restored data is demultiplexed in the interlink 34 of the demultiplexer 33 and transferred to the channel card 35. Then, the subscriber register matching unit 36 restores the digital data of the channel card 35 to the FSK analog paging signal and transmits the radio pager through the transmitter so that the user's radio pager can receive the radio call signal.

Meanwhile, the monitoring and control operations of the central station 10 and the base station 30 are performed through the PCCBs 18, 19, and 20. That is, the local PCCB 18 periodically polls all the devices of the central station 10 to store the status as a message, and then reports the status message when the master PCCB 19 polls, and issues the commands of the network manager 22. Distribute to the device. In addition, the master PCCB 19 polls the local PCCB 18 and the center PCCB 20 to report the state of the central station 10 and the base station 30 apparatuses to the network management unit 22, and commands from the network management unit 22. To the local PCCB 22 and the center PCCB 22. The center PCCB 20 is then responsible for the communication between the central station 10 and the base station 30. When the master PCCB 19 polls the center PCCB 20, the subscriber connection 38 of the base station 30 is connected. The collected base station status message is reported to the master PCCB 19.

And the network management unit 22 manages the configuration and state of the entire radio call data satellite transmission system, the central station multiplexer 12 component adjustment, the output frequency adjustment of the modulation unit 15, the high frequency transmission unit 16 transmission Control the base station 10 by controlling the output, adjusting the antenna orientation angle, and controlling the base station 30 by controlling the components of the demultiplexer 33 and adjusting the reception channel frequency of the demodulator 32. It is provided to the user with a GUI.

And the network management unit 22 includes a GUI input unit 41, the GUI input unit 41 is a part that receives a command thereof when an operator or a user tries to understand or control the state of each subsystem, buttons displayed on the GUI By clicking, the operator performs a download to the subsystem. The conventional network manager 22 only downloads all of the parameters of the corresponding subsystem shown on the GUI when the user clicks download with only the GUI input 41. Therefore, for example, if you modify the value from parameter 1) to the parameter 10) and then change the parameter 3) to the wrong value by mistake, the system may fail when downloading.

As described above, when a parameter download command is issued to each subsystem of the central station from the network management unit, which is the central station control unit of the radio call data satellite transmission system, the command is performed simultaneously with the click of the download button without verification.

However, if this is done, the corresponding subsystem is changed to the wrong parameter, and if the changed parameter is an important parameter affecting the operation of the entire system, the radio call service is interrupted, causing many problems.

Accordingly, the present invention has been proposed to solve the conventional problems as described above, and an object of the present invention is to download the wrong parameters when downloading the parameters of the radio call data satellite transmission system and display them on the GUI screen when a failure occurs in the system. The present invention provides a parameter download error prevention device and a control method of the radio call data satellite transmission system that can prevent the failure of the system through the verification of the download.

In order to achieve the above object, the parameter download error prevention device of the radio call data satellite transmission system according to the present invention,

A GUI input unit in charge of graphics processing; A verification unit of each independent download parameter which receives a command from the GUI input unit and verifies parameters of each subsystem; According to the result of the verification unit is characterized in that the technical configuration consisting of an alarm driving unit for receiving the confirmation of the operator or user by displaying this on the GUI screen.

In order to achieve the above object, the parameter download error prevention method of the radio call data satellite transmission system according to the present invention,

Starting and initializing a GUI, which is a network management unit of the radio calling data satellite transmission system, updating parameters of each subsystem of the radio calling data satellite transmission system, and checking whether there are any changes; Checking a download flag if the parameter download processing is entered by the operator after the checking; The technical configuration is characterized by performing a step of performing a malfunction prevention operation for each subsystem by performing download processing corresponding to each subsystem according to the download flag.

1 is a block diagram of a general wireless data satellite transmission system;

2 is a block diagram of an apparatus for preventing a parameter download error of a radio call data satellite transmission system according to the present invention;

3 is a flowchart illustrating a parameter download error prevention method of a radio call data satellite transmission system according to the present invention;

4 is a detailed flowchart illustrating an error prevention method of an antenna subsystem in FIG. 3;

FIG. 5 is a detailed flowchart illustrating an error prevention method of the beacon subsystem in FIG.

FIG. 6 is a detailed flow chart illustrating an error prevention method of the UPC subsystem in FIG.

FIG. 7 is a detailed flowchart illustrating an error prevention method of the XMT subsystem in FIG. 3;

FIG. 8 is a detailed flowchart illustrating a method of preventing an error of a modulator subsystem in FIG. 3;

FIG. 9 is a detailed flowchart illustrating an error prevention method of the network controller subsystem in FIG. 3;

FIG. 10 is a detailed flowchart illustrating an error prevention method of an interlink subsystem in FIG. 3;

FIG. 11 is a detailed flowchart illustrating an error prevention method of the channel card subsystem in FIG. 3;

FIG. 12 is a detailed flowchart illustrating an error prevention method of the subscriber matching unit subsystem in FIG.

FIG. 13 is a detailed flowchart illustrating an error prevention method of the ICU subsystem in FIG. 3;

14 is a flowchart illustrating a processing of a download driving window when an alarm occurs in the alarm driving unit;

15 is a flow chart of a return drive window when an alarm occurs in the alarm drive unit;

<Explanation of symbols for the main parts of the drawings>

22: network management unit 41: GUI input unit

42: verification unit 43: alarm drive unit

Hereinafter, with reference to the accompanying drawings an embodiment according to the technical idea of the parameter download error prevention device and the control method of the present invention, the radio call data satellite transmission system as described above in detail.

First, in order to solve the conventional problems, the GUI processor verifies its suitability when the user attempts to download an important parameter of each subsystem by clicking a button of the user, and then the critical and obvious error in operating the system. If it is a download, prevent it, and if it does not affect the operation of the system, the status of the system is implemented so that the operator can confirm the user's confirmation and run the GUI window to prevent the failure of the system due to the wrong parameter download. To prevent errors in parameter download in the network management system that manages and controls the system.

Figure 2 is a block diagram of a parameter download error prevention device of a radio call data satellite transmission system according to the present invention.

As shown therein, a GUI input unit 41 in charge of graphics processing; A verification unit (42) of each independent download parameter received from the GUI input unit (41) to verify parameters of each subsystem; According to the result value of the verification unit 42 is configured with an alarm driver 43 to display this on the GUI screen to receive the confirmation of the operator or user.

Thus, the GUI input unit 41 is responsible for graphic processing, and the verification unit 42 receives a command from the GUI input unit 41 to verify the parameters of each subsystem, and the alarm driver 43 of the verification unit 42 According to the result value, it is displayed on the GUI screen to be confirmed by the operator or user.

Here, the GUI input unit 41 is a part that receives an instruction when an operator or a user tries to check or control the state of each subsystem. The operator performs a download to the subsystem by clicking a button displayed on the GUI. The conventional network manager 22 only downloads all of the parameters of the corresponding subsystem shown on the GUI when the user clicks download with only the GUI input 41. Therefore, for example, if you modify the value from parameter 1) to the parameter 10) and then change the parameter 3) to the wrong value by mistake, the system may fail when downloading.

In addition, the verification unit 42 verifies the suitability of downloading an incorrect parameter value by an operator who does not recognize as described above or by an arbitrary (unskilled) user who does not know the system. The verification unit is required, and since these subsystems all perform different tasks, a verification unit 42 suitable for each is required. Therefore, the verification unit 42 judges the parameter value input and downloaded from the GUI input unit 41 according to the characteristics of each subsystem, and is a critical and obvious error and an error but not critical to system operation. Separate as appropriate for your system.

In addition, the alarm driver 43 drives the alarm window according to the three cases verified by the verification unit 43 and asks whether the user performs confirmation or download.

3 is a flowchart illustrating a parameter download error prevention method of a radio call data satellite transmission system according to the present invention.

Therefore, first, the network manager 22 of the radio call data satellite transmission system for operating the present invention drives the GUI (ST1) and initializes the GUI (ST2).

The parameter status of each subsystem of the radio call data satellite transmission system is updated and checked for changes (ST3).

Then, the operator checks whether a command for parameter download processing for each subsystem is input, repeats update step ST3 if not for download processing, and download flag check if it is for download processing. (ST4)

Accordingly, it is checked to which subsystem of the radio call data satellite transmission system the checked download flag corresponds (ST5).

Thus, a malfunction prevention operation for each subsystem is performed for download processing against each of ANT, BEACON, UPC, XMT, MOD, QSP, NCL, ILC, PCIB, and ICU (ST6 to ST15). If there is no corresponding subsystem, the process is regarded as a part that does not need verification, and the download processing operation is continued (ST16).

FIG. 4 is a detailed flowchart illustrating an error prevention method of the antenna subsystem in FIG. 3.

First, a corresponding center station of the radio call data satellite transmission system is selected (ST21). Then, the connection between the antenna subsystem and the NMS, which is the network management unit 22 of the radio call data satellite transmission system, is checked (ST22). Thus, when the antenna subsystem and the NMS are not connected, the return driving window drives the display Display_return_win (ST23). Then, the malfunction prevention routine of the antenna subsystem is no longer performed, and the download processing of the antenna subsystem is no longer performed (ST24).

When the antenna subsystem and the NMS are connected, the Satellite_Azimuth, Satellite_Elevation, and Satellite_Polarization values of Status are read (ST25). Then, the Azimuth, Elevation, and Polarization values entered by the Admin, that is, the operator, are read (ST26).

Therefore, check whether Status and Admin's Azimuth, Elevation, and Polarization values match each other (ST27). If any is not the same, display_down_win of the alarm generating window driving algorithm is driven (ST28), and if the execution result of Display_down_win is not Confirm, the malfunction prevention routine of the antenna subsystem is no longer executed, and the download processing of the antenna subsystem is further performed. Return so that it is not abnormally performed (ST24). If the Status, Admin, Azimuth, Elevation, and Polarization values are all the same, or if Confirm is confirmed, the download processing of the antenna subsystem is performed (ST30).

FIG. 5 is a detailed flowchart illustrating an error prevention method of the beacon subsystem in FIG. 3.

First, the connection between the beacon subsystem and the NMS, which is the network manager 22 of the radio call data satellite transmission system, is checked (ST31). Therefore, if the beacon subsystem and the NMS are connected, the administrator, that is, reads the bandwidth, demodulation, and frequency values input by the operator (ST32).

Then, it is checked whether the value of the frequency is 1449.50 MHz (ST33). Therefore, if the frequency value is 1449.50MHz, it is checked whether the bandwidth value is 60KHz and the demodulation value is PN (ST34). If the value of the bandwidth is not 60KHz or the value of the demodulation is not PN, Display_down_win is driven (ST35). Then, the driving result of Display_down_win is checked (ST36).

Therefore, when the beacon subsystem and the NMS are not connected or the frequency value is not 1449.50 MHz or the driving result of the Display_down_win is not confirmed, the display_return_win is driven (ST37) (ST38). Further, the malfunction prevention routine of the beacon subsystem is no longer performed, and the download processing of the beacon subsystem is no longer performed (ST39).

In addition, when the bandwidth value is 60 KHz and the demodulation value is PN or when the driving result of Display_down_win is confirmed, the download processing of the beacon subsystem is driven (ST40).

FIG. 6 is a detailed flowchart illustrating an error prevention method of the UPC subsystem in FIG. 3.

First, it is checked whether it is connected to the NMS, which is the network management unit 22 of the UPC subsystem and the radio call data satellite transmission system (ST41). Therefore, if the UPC subsystem and the NMS are connected, the value of the op mode and the conversion factor input by the admin, the operator is read (ST42).

The op mode value and the conversion factor value are checked to determine whether the op mode value is Enable and the value of the Conversion Factor is 1.5 (ST43).

Therefore, if the UPC subsystem and the NMS are not connected, or if the op mode value is not Enabled or the Conversion Factor is not 1.5, it affects the service of the radio calling data satellite transmission system and handles the severe cases. The routine is driven (ST44). Accordingly, Display_return_win is driven (ST45). Then, the malfunction prevention routine of the UPC subsystem is no longer performed, and the download processing of the UPC subsystem is no longer performed (ST46).

If the op mode value is Enable and the value of the Conversion Factor is 1.5, the download processing of the UPC subsystem is performed (ST47).

FIG. 7 is a detailed flowchart illustrating an error prevention method of the XMT subsystem in FIG. 3.

First, the value of the Transmit_Freq input by the Admin, that is, the operator is read (ST51).

Therefore, if the value of Transmit_Freq is not equal to 14250.0MHz, the display_down_win is driven and then the driving result of the display_down_win is checked (ST55-ST57). Therefore, if the driving result is not confirmed, the malfunction prevention routine of the XMT subsystem is no longer performed, and the download processing of the XMT subsystem is no longer performed (ST58). When the driving result is confirmed, the process returns to the XMT subsystem error prevention algorithm (ST59).

Then, if the value of Transmit_Freq is equal to 14250.0 MHz (ST52) or when it returns to the XMT subsystem error prevention algorithm (ST59), it is checked whether both XMT-A and XMT-B are Online (ST53). If none is Online, drive Display_down_win and check the driving result of Display_down_win (ST55-ST57). Therefore, if the driving result is not confirmed, the malfunction prevention routine of the XMT subsystem is no longer performed, and the download processing of the XMT subsystem is no longer performed (ST58). When the driving result is confirmed, the process returns to the XMT subsystem error prevention algorithm (ST59).

If both XMT-A and XMT-B are Online (ST53) or return to the XMT Subsystem Error Prevention Algorithm (ST59), then XMT-A or XMT-B is not On_Line. do. Therefore, if it is not a download, run Display_down_win and check the driving result of Display_down_win (ST55-ST57). Therefore, if the driving result is not confirmed, the malfunction prevention routine of the XMT subsystem is no longer performed, and the download processing of the XMT subsystem is no longer performed (ST58). When the driving result is confirmed, the process returns to the XMT subsystem error prevention algorithm (ST59).

If it downloads (ST54) or returns to the XMT subsystem error prevention algorithm (ST59), the XMT subsystem download processing is performed (ST60).

FIG. 8 is a detailed flowchart illustrating an error prevention method of a modulator (MOD) subsystem in FIG. 3.

First, the connection between the MOD subsystem and the NMS, which is the network manager 22 of the radio call data satellite transmission system, is checked (ST61).

Therefore, when the MOD subsystem and the NMS are connected, the corresponding center station is selected (ST62). The Carrier ID of the selected central station is read from the database (ST64). Then, it compares whether the Carrier ID read from the database and the Carrier ID of the central station input by the operator are the same (ST65).

Accordingly, if they are the same, Display_down_win is driven and the result is checked (ST66) (ST67).

If the MOD subsystem and the NMS are not connected or the driving result of the Display_down_win is not confirmed, the routine that affects the service of the radio call data satellite transmission system and handles a serious case is driven (ST68). Therefore, the display_return_win is driven, the malfunction prevention routine of the MOD subsystem is no longer performed, and the download processing of the MOD subsystem is no longer performed (ST69).

If the Carrier ID read from the database and the Carrier ID of the central station input by the operator are not the same or the driving result of Display_down_win is confirmed, the download processing of the MOD subsystem is performed (ST70).

FIG. 9 is a detailed flowchart illustrating an error prevention method of the NCL subsystem in FIG. 3. The operation thereof will be described below.

First, the corresponding center station is selected (ST71). Then, the redundancy flag, CFB 1, CFB 2, Backbone 1, and Backbone 2 values inputted by the operator are read (ST72).

Therefore, it is checked whether the redundancy flag value is Enable (ST73). If the redundancy flag value is not Enable, the routine that affects the service of the radio calling data satellite transmission system and handles the case where the degree is not severe (ST77) is driven. Therefore, run Display_down_win (ST78), check the driving result of Display_down_win (ST79), and if the result is not confirmed, no longer perform the malfunction prevention routine of the NCL subsystem, and download processing of the NCL subsystem is no longer performed. Do not (ST80). If the result is confirmed, it returns to the NCL subsystem error prevention algorithm (ST81).

In addition, if the redundancy flag value is Enable (ST73) or returns to the NCL subsystem error prevention algorithm (ST81), it is checked whether the CFB 1 value is Primary (ST74). Therefore, if the CFB 1 value is not Primary, the routine that affects the service of the radio calling data satellite transmission system and handles the case where the degree is not severe (ST77) is driven. Therefore, run Display_down_win (ST78), check the driving result of Display_down_win (ST79), and if the result is not confirmed, no longer perform the malfunction prevention routine of the NCL subsystem, and download processing of the NCL subsystem is no longer performed. Do not (ST80). If the result is confirmed, it returns to the NCL subsystem error prevention algorithm (ST81).

If the CFB 1 value is Primary (ST74) or the NCL subsystem error protection algorithm is returned (ST81), it is checked whether the CFB 2 value is Redundancy (ST75). Therefore, if the CFB 2 value is not Redundancy, a routine that affects the service of the radio calling data satellite transmission system and handles the case where the degree is not severe (ST77) is driven. Therefore, run Display_down_win (ST78), check the driving result of Display_down_win (ST79), and if the result is not confirmed, no longer perform the malfunction prevention routine of the NCL subsystem, and download processing of the NCL subsystem is no longer performed. Do not (ST80). If the result is confirmed, it returns to the NCL subsystem error prevention algorithm (ST81).

If the CFB 2 value is Redundancy (ST75) or returns to the NCL subsystem error prevention algorithm (ST81), it is checked whether the Backbone 1 value is equal to the corresponding central station Backbone value (ST76). Therefore, if the Backbone 1 value is different from the Backbone value of the central station, a routine that affects the service of the radio calling data satellite transmission system and handles the case where the degree is not severe (ST77) is executed. Therefore, run Display_down_win (ST78), check the driving result of Display_down_win (ST79), and if the result is not confirmed, no longer perform the malfunction prevention routine of the NCL subsystem, and download processing of the NCL subsystem is no longer performed. Do not (ST80). If the result is confirmed, it returns to the NCL subsystem error prevention algorithm (ST81).

In addition, if the Backbone 1 value is equal to the central station Backbone value (ST76) or the NCL subsystem error protection algorithm is returned (ST81), the NCL subsystem download processing is performed.

FIG. 10 is a detailed flowchart illustrating an error prevention method of an interlink (ILC) subsystem in FIG. 3.

First, a corresponding center station is selected (ST91). In addition, the operator reads the Opmode, Rx Data Rate, Modem Speed, ILC Mode, Tx Data Rate, and Logical Node values input by the operator (ST92).

Therefore, it is checked whether the Opmode value input by the operator is Master (ST93). Therefore, if the Opmode value is not Master, a routine that affects the service of the radio calling data satellite transmission system and handles the case where the information is serious (ST99) is performed. That is, after driving Display_return_win (ST100), the malfunction prevention routine of the ILC subsystem is no longer performed, and the download processing of the ILC subsystem is no longer performed (ST101).

If the Opmode value is Master, it is checked whether the Rx Data Rate value is Tx only (ST94). Therefore, if the Rx Data Rate value is not Tx only, a routine that affects the service of the radio calling data satellite transmission system and handles the case where the information is serious (ST99) is performed. That is, after driving Display_return_win (ST100), the malfunction prevention routine of the ILC subsystem is no longer performed, and the download processing of the ILC subsystem is no longer performed (ST101).

If the Rx Data Rate value is Tx only, it is checked whether the Modem Speed value is 2400bps (ST95). Therefore, if the Modem Speed value is not 2400bps, a routine that affects the service of the radio calling data satellite transmission system and does not have a serious level is performed (ST102). That is, after driving Display_down_win (ST103) and checking the result (ST104), and if the result is not confirmed, after driving Display_return_win (ST100), the malfunction prevention routine of the ILC subsystem is no longer performed. Download processing of the subsystem is no longer performed (ST101). If the result is confirmed, it returns to the ILC subsystem error prevention algorithm (ST105).

In addition, if the Modem Speed value is 2400bps or returns to the ILC subsystem error prevention algorithm, it is checked whether the ILC Mode value is Tx Only (ST96). Therefore, if the ILC Mode value is not Tx Only, a routine that affects the service of the radio calling data satellite transmission system and handles the case where the information is serious (ST99) is performed. That is, after driving Display_return_win (ST100), the malfunction prevention routine of the ILC subsystem is no longer performed, and the download processing of the ILC subsystem is no longer performed (ST101).

If the ILC Mode value is Tx Only, it is checked whether the Tx Data Rate value is 64 Kbps (ST97). Therefore, if the Tx Data Rate value is not 64Kbps, a routine that affects the service of the radio calling data satellite transmission system and does not have a serious level is performed (ST102). That is, after driving Display_down_win (ST103) and checking the result (ST104), and if the result is not confirmed, after driving Display_return_win (ST100), the malfunction prevention routine of the ILC subsystem is no longer performed. Download processing of the subsystem is no longer performed (ST101). If the result is confirmed, it returns to the ILC subsystem error prevention algorithm (ST105).

In addition, if the Tx Data Rate value is 64 Kbps (ST97) or the ILC subsystem error prevention algorithm (ST105), check whether the Logical Node value is equal to the corresponding Central Station Logical Node value (ST98). Therefore, if the Logical Node value is not equal to the corresponding Logical Node value of the central station, a routine is performed that affects the service of the radio calling data satellite transmission system and handles the case where the degree is not severe (ST102). That is, after driving Display_down_win (ST103) and checking the result (ST104), and if the result is not confirmed, after driving Display_return_win (ST100), the malfunction prevention routine of the ILC subsystem is no longer performed. Download processing of the subsystem is no longer performed (ST101). If the result is confirmed, it returns to the ILC subsystem error prevention algorithm (ST105).

If the Logical Node value is equal to the corresponding Central Station Logical Node value (ST98) or returns to the ILC subsystem error prevention algorithm (ST105), the ILC subsystem download processing is performed (ST106).

FIG. 11 is a detailed flowchart illustrating an error prevention method of the channel card (QSP) subsystem in FIG. 3.

First, the Connect Type, QSP_port, Output Mode, Function, and Delay threshold values input by the operator are read (ST111).

Then, it is checked whether the Connect Type input by the operator is an Originator (ST112).

Therefore, if the Connect Type is not an Originator, a routine that affects the service of the radio calling data satellite transmission system and handles the case where the degree is not serious (ST117) is performed. That is, after driving Display_down_win (ST118) and checking the result (ST119), if the result is not confirmed, the malfunction prevention routine of the QSP subsystem is no longer performed, and the download processing of the QSP subsystem is no longer performed. Do not (ST120). If the result is confirmed, it returns to the QSP subsystem error prevention algorithm (ST121).

If the Connect Type is Originator (ST112) or the QSP Subsystem Error Prevention Algorithm (ST121), the QSP_port, Redundant_port, and HPRS Dest_port are equal to each other (ST113). Therefore, if QSP_port, Redundant_port, and HPRS Dest_port are not equal to each other, a routine that affects the service of the radio calling data satellite transmission system and handles the case where the degree is not serious (ST117) is performed. That is, after driving Display_down_win (ST118) and checking the result (ST119), if the result is not confirmed, the malfunction prevention routine of the QSP subsystem is no longer performed, and the download processing of the QSP subsystem is no longer performed. Do not (ST120). If the result is confirmed, it returns to the QSP subsystem error prevention algorithm (ST121).

Also, if the QSP_port, Redundant_port, and HPRS Dest_port are the same (ST113) or return to the QSP subsystem error prevention algorithm (ST121), it is checked whether the output mode is Input Only (ST114). Therefore, if the output mode is not Input Only, a routine that affects the service of the radio calling data satellite transmission system and handles the case where the degree is not serious (ST117) is performed. That is, after driving Display_down_win (ST118) and checking the result (ST119), if the result is not confirmed, the malfunction prevention routine of the QSP subsystem is no longer performed, and the download processing of the QSP subsystem is no longer performed. Do not (ST120). If the result is confirmed, it returns to the QSP subsystem error prevention algorithm (ST121).

In addition, if the output mode is Input Only (ST114) or the QSP subsystem error prevention algorithm (ST121), check whether the function value is In Band (ST115). Therefore, if the function value is not In Band, a routine that affects the service of the radio calling data satellite transmission system and does not have a serious level is performed (ST117). That is, after driving Display_down_win (ST118) and checking the result (ST119), if the result is not confirmed, the malfunction prevention routine of the QSP subsystem is no longer performed, and the download processing of the QSP subsystem is no longer performed. Do not (ST120). If the result is confirmed, it returns to the QSP subsystem error prevention algorithm (ST121).

If the function value is In Band (ST115) or the QSP subsystem error prevention algorithm is returned (ST121), it is checked whether the Delay Threshold value is greater than or equal to 1 (ST116). Therefore, if the Delay Threshold value is less than 1, a routine that affects the service of the radio calling data satellite transmission system and handles the case where the degree is not severe (ST117) is performed. That is, after driving Display_down_win (ST118) and checking the result (ST119), if the result is not confirmed, the malfunction prevention routine of the QSP subsystem is no longer performed, and the download processing of the QSP subsystem is no longer performed. Do not (ST120). If the result is confirmed, it returns to the QSP subsystem error prevention algorithm (ST121).

Furthermore, if the Delay Threshold value is greater than or equal to 1 (ST116) or if the Delay Threshold value is returned to the QSP subsystem error prevention algorithm (ST121), the QSP subsystem download processing is performed (ST122).

FIG. 12 is a detailed flowchart illustrating a method for preventing an error of a PCIB subsystem in FIG. 3.

First, the status of the interface line and code of the TDX-PS exchanger, the QSP interface clock, and the data rate are read from the database (ST131).

Then, check whether the state of the TDX-PS Interface Line and Code read from the database is Enable (ST132). Therefore, if the state of the TDX-PS Interface Line and Code is not Enable, it affects the service of the radio calling data satellite transmission system and runs a routine to handle the case where the degree is not serious (ST138). That is, after driving Display_return_win (ST139), the malfunction prevention routine of the PCIB subsystem is no longer performed, and the download processing of the PCIB subsystem is no longer performed (ST140).

If the state of the TDX-PS Interface Line and Code is Enable (ST132), it is checked whether the state of the QSP Interface Clock and the data rate read from the database is Enable (ST133). Therefore, if the state of the QSP Interface Clock and Data Rate is not Enable, the routine that affects the service of the radio calling data satellite transmission system and handles the case where the degree is not serious (ST138). That is, after driving Display_return_win (ST139), the malfunction prevention routine of the PCIB subsystem is no longer performed, and the download processing of the PCIB subsystem is no longer performed (ST140).

In addition, if the status of QSP Interface Clock and Data Rate is Enable (ST132), Code and Key-up value inputted by the operator is read. Then, it is checked whether the code value is SPOC and the key-up value is analog (ST135). Thus, if they are not all the same, download processing of the PCIB subsystem is performed (ST142). If none is the same, Display_down_win is driven (136).

Therefore, if the operation of Display_down_win is checked and the result is not confirmed, the malfunction prevention routine of the PCIB subsystem is no longer performed, and the download processing of the PCIB subsystem is no longer performed (ST 141). If the result is confirmed, download processing of the PCIB subsystem is performed (ST142).

FIG. 13 is a detailed flowchart illustrating an error prevention method of the ICU subsystem in FIG. 3.

First, the ICU_Type value input by the operator is read (ST151).

Then, it is checked whether the value of ICU_Type is CKL (ST152). Therefore, if the value of ICU_Type is not CKL, after driving Display_return_win (ST156), the malfunction prevention routine of the ICU subsystem is no longer performed, and the download processing of the ICU subsystem is no longer performed (ST157).

If the value of ICU_Type is CKL, Time_Control, Shelf_type, Port_speed, and Activity_Status values input by the operator are read (ST153).

Therefore, it is checked whether the Time Control value is Auto, the Shelf_type value is Redundancy, the Port_speed value is 2400bps, and the Activity_Status value is Enable (ST154). Thus, if any one is not the same, it affects the service of the radio call data satellite transmission system, and drives a routine to handle the case where the degree is not severe (ST158). That is, after driving Display_down_win (ST159) and checking the result (ST160), if the result is not confirmed, the malfunction prevention routine of the ICU subsystem is no longer performed, and the download processing of the ICU subsystem is no longer performed. Do not perform (ST161). If the result is confirmed, it returns to the ICU subsystem error prevention algorithm (ST162).

So if Time Control value is Auto, Shelf_type value is Redundancy, Port_speed value is 2400bps, Activity_Status value is Enable (ST154), or if you return to ICU subsystem error prevention algorithm (ST162), ICU subsystem download processing is performed. (ST 163).

14 is a flowchart illustrating a processing of a download driving window when an alarm occurs in the alarm driver. The operation thereof will be described below.

That is, the execution of Display_down_win () is performed as follows.

First, the number of arguments of the corresponding parameter of each subsystem is read (ST171). And different parameters are selected in the verification algorithm of each subsystem (ST172).

Therefore, the Alarm_win (1/6 size of the Main Window) is driven to output a message indicating that the values of the selected parameters are different, and a yes / no button asking whether to continue downloading (ST173).

15 is a flowchart of a process of a return drive window when an alarm occurs in the alarm driver. The operation thereof will be described below.

So, execution of Display_return_win () is performed as follows.

First, the number of arguments of the corresponding parameter of each subsystem is read (ST181). And different parameters are selected in the verification algorithm of each subsystem (ST182).

Then, alarm_win (1/6 size of the Main Window) is driven to output a message indicating that the values of the selected parameters are different, and a confirm button is output to indicate that the current download cannot be continued (ST183).

Thus, the present invention is to prevent the failure of the system through the process of verifying whether or not the download of the parameters of the radio call data satellite transmission system is downloaded and the wrong parameters are downloaded to the GUI screen.

Although the preferred embodiment of the present invention has been described above, the present invention may use various changes, modifications, and equivalents. It is clear that the present invention can be applied in the same manner by appropriately modifying the above embodiments. Accordingly, the above description does not limit the scope of the invention as defined by the limitations of the following claims.

As described above, the parameter download error prevention device and control method of the radio call data satellite transmission system according to the present invention when the operator transmits a command to the system through the GUI in the network management system that manages and controls the state of the system By preventing unrecognized errors from causing system failure due to the downloading of wrong parameters by other causes, it prevents the interruption of publicly available wireless paging service, and the time and cost of analysis of the causes necessary for system recovery, and complaints about service interruption. By avoiding congestion and other consequences, the system can improve the stability and security of the system.

Claims (17)

A network management unit having a GUI input unit in charge of graphic processing and performing state management and control of a radio call data satellite transmission system, wherein the network management unit includes: A verification unit of each independent download parameter which receives a command from the GUI input unit and verifies parameters of each subsystem; And an alarm driver configured to receive a confirmation of an operator or a user by displaying this on a GUI screen according to a result value of the verification unit. The method of claim 1, wherein the verification unit, A verification unit corresponding to each of the subsystems of the radio call data satellite transmission system for verifying the suitability of downloading an incorrect parameter value by an operator who does not recognize the system or by any user who does not know the system; It is possible to separate and verify the parameter values inputted and downloaded from each sub-system according to the characteristics of each subsystem, and to separate and verify them as important and obvious errors and errors, but not critical to system operation. A parameter download error prevention device of a radio call data satellite transmission system, characterized in that performed. The method of claim 1, wherein the alarm drive unit, When the parameter value determined by the verification unit is an important and obvious error or an error, but is not important to the system operation and when the parameter values are suitable for the subsystem, the alarm window is driven to confirm or to check the user in each case. A device for preventing a parameter download error of a radio call data satellite transmission system, characterized in that it performs a function of asking whether to perform a download. Starting and initializing a GUI, which is a network management unit of the radio calling data satellite transmission system, updating parameters of each subsystem of the radio calling data satellite transmission system, and checking whether there are any changes; Checking a download flag if the parameter download processing is entered by the operator after the checking; And performing a malfunction prevention operation for each subsystem by performing download processing corresponding to each subsystem according to the download flag. The method of claim 4, wherein in the performing of a processing for preventing malfunctions by each subsystem by performing download processing corresponding to each subsystem according to the download flag, error prevention of the antenna subsystem is performed. Checking the connection between the selected next antenna sub-system of the central station and the network management unit; Driving Display_return_win if the antenna subsystem and the network management unit are not connected, and returning the download process of the antenna subsystem to no longer be performed; When the antenna subsystem and the network management unit are connected, it reads the Satellite_Azimuth, Satellite_Elevation, and Satellite_Polarization values of Status, and reads the Azimuth, Elevation, and Polarization values entered by the operator, and whether the Status and the Azimuth, Elevation, and Polarization values entered by the operator match. Confirming; If any of the above values are not the same, the display_down_win of the alarm generation window driving algorithm is driven. If the execution result of the display_down_win is not Confirm, the malfunction prevention routine of the antenna subsystem is no longer executed and the download processing of the antenna subsystem is no longer performed. If the status and the Azimuth, Elevation, Polarization values entered by the operator are all the same or if Confirm is confirmed, the step of performing the download processing of the antenna subsystem is performed. How to prevent parameter download errors. The error prevention of the beacon subsystem according to claim 4, wherein in the performing of processing for preventing malfunction by each subsystem by performing download processing corresponding to each subsystem according to the download flag, Checking whether the beacon subsystem and the network management unit are connected; When the beacon subsystem and the network management unit are connected, the operator reads the bandwidth, demodulation, and frequency values entered by the operator, checks whether the frequency value is 1449.50MHz, and if the frequency value is 1449.50MHz, the bandwidth value is 60KHz. Checking whether the value is PN; Driving Display_down_win when the value of the bandwidth is not 60KHz or the value of Demodulation is not PN, and checking the driving result of Display_down_win; If the beacon subsystem and the network management unit are not connected, or if the frequency value is not 1449.50 MHz or the driving result of the Display_down_win is not confirmed, the display_return_win is driven and the malfunction prevention routine of the beacon subsystem is no longer performed. No longer performing download processing of the beacon subsystem; If the value of the bandwidth is 60KHz and the value of Demodulation is PN or if the driving result of Display_down_win is confirmed, driving the download processing of the beacon subsystem is performed. How to avoid errors. The error prevention of the UPC subsystem according to claim 4, wherein in the step of performing a malfunction prevention operation for each subsystem by performing download processing corresponding to each subsystem according to the download flag, Checking whether the UPC subsystem is connected to the network manager; If the UPC subsystem and the network management unit are connected, reading the values of the op mode and the conversion factor input by the operator and checking whether the read op mode value is Enable and the value of the Conversion Factor is 1.5; If the UPC subsystem and the NMS are not connected or if the op mode value is not Enable or the conversion factor is not 1.5, the UPC subsystem is no longer executed by operating Display_return_win without performing the malfunction prevention routine of the UPC subsystem. No longer performing the download processing of; And if the op mode value is Enable and the value of Conversion Factor is 1.5, performing the download processing of the UPC subsystem. The error prevention of the XMT subsystem according to claim 4, wherein in the performing of a processing for preventing malfunction by each subsystem by performing download processing corresponding to each subsystem according to the download flag, Reading the value of Transmit_Freq input by the operator and comparing the value of Transmit_Freq with 14250.0 MHz; If the value of Transmit_Freq is not equal to 14250.0MHz, run Display_down_win and check the driving result of Display_down_win.If the driving result is not confirmed, no further processing of malfunction prevention routine of XMT subsystem is performed and the download processing of XMT subsystem is further performed. Returning to the XMT subsystem error prevention algorithm if the driving result is confirmed; If the value of Transmit_Freq is equal to 14250.0 MHz, checking whether both XMT-A and XMT-B are Online; If none is online by the online check, run Display_down_win and then check the driving result of Display_down_win.If the driving result is not confirmed, download processing of the XMT subsystem is no longer performed without performing the malfunction prevention routine of the XMT subsystem. Performing no more operations and returning to the XMT subsystem error prevention algorithm when the driving result is confirmed; If the XMT-A and the XMT-B are both Online, checking whether to download by setting Operate; If it is not the above download, run Display_down_win and check the result, and if the driving result is not confirmed, the malfunction prevention routine of the XMT subsystem is no longer executed and the download processing of the XMT subsystem is no longer performed. Returning to the XMT subsystem error prevention algorithm; And performing the download processing of the XMT subsystem when the download is performed. The method of claim 4, wherein in the performing of processing for preventing malfunction by each subsystem by performing download processing corresponding to each subsystem according to the download flag, error prevention of the modulation unit subsystem may include: Checking whether the modulation unit subsystem and the network management unit are connected; When the modulation unit subsystem and the network management unit are connected, the corresponding center station is selected, and the carrier ID of the selected center station is read from the database, and then the carrier ID read from the database and the carrier ID of the center station input by the operator are the same. Making a step; Driving Display_down_win if the comparison results are the same, and checking the result; If the modulation unit subsystem and the network management unit are not connected or the driving result of the Display_down_win is not confirmed, the display_return_win is driven, and the malfunction prevention routine of the MOD subsystem is no longer performed, and the download processing of the MOD subsystem is no longer performed. Do not step; If the Carrier ID read from the database and the Carrier ID of the central station input by the operator are not the same or if the driving result of Display_down_win is confirmed, performing the step of performing the download processing of the MOD subsystem. Parameter download error prevention method of data satellite transmission system. According to claim 4, In the step of performing a malfunction prevention operation for each subsystem by performing the download processing corresponding to each subsystem in accordance with the download flag, the error prevention of the network controller subsystem, Selecting a corresponding central station and reading Redundancy flag, CFB 1, CFB 2, Backbone 1, and Backbone 2 values input by the operator and checking whether the Redundancy flag value is Enable; If the redundancy flag value is not Enable, the display_down_win is driven. If the driving result is not confirmed, the malfunction prevention routine of the network controller subsystem is no longer performed and the download processing of the network controller subsystem is no longer performed. If it is confirmed, returning to the network controller subsystem error prevention algorithm; Checking whether the CFB 1 value is Primary if the Redundancy flag value is Enable; If the CFB 1 value is not Primary, drive Display_down_win, check the driving result of Display_down_win, and if the result is not confirmed, no longer perform the malfunction prevention routine of the network controller subsystem, and download processing of the network controller subsystem. Do not perform any more, and if the result is confirmed, returning to the network controller subsystem error prevention algorithm; Checking whether the CFB 2 value is Redundancy if the CFB 1 value is Primary; If the CFB 2 value is not Redundancy, drive Display_down_win, check the driving result of Display_down_win, and if the result is not confirmed, do not perform the malfunction prevention routine of the network controller subsystem any more and download processing of the network controller subsystem is further performed. Not performing abnormally, and if the result is confirmed, returning to the network controller subsystem error prevention algorithm; If the CFB 2 value is Redundancy, checking whether the Backbone 1 value is equal to the central station Backbone value; If the Backbone 1 value is different from the Backbone value of the central station, run Display_down_win, check the driving result of Display_down_win, and if the result is not confirmed, do not perform the malfunction prevention routine of the network controller subsystem any more and download the network controller subsystem. Processing is no longer performed, and if the result is confirmed, returning to the network controller subsystem error prevention algorithm; And if the Backbone 1 value is the same as the central station Backbone value, executing the network controller subsystem download processing. The error prevention of the interlink subsystem according to claim 4, wherein in the performing of a processing for preventing malfunction by each subsystem by performing download processing corresponding to each subsystem according to the download flag, Selecting a corresponding central station and reading values of Opmode, Rx Data Rate, Modem Speed, ILC Mode, Tx Data Rate, and Logical Node input by the operator; If the Opmode value is not Master or the Rx Data Rate value is not Tx only or the value of the Interlink Mode is not Tx Only, the display_return_win is driven, and then the interlink is not performed any more without performing the malfunction prevention routine of the interlink subsystem. No longer performing download processing of the subsystem; If the Modem Speed value is not 2400bps or the Tx Data Rate value is not 64Kbps, or if the Logical Node value is not the Logical Node of the corresponding central station, run Display_down_win and if the result is not confirmed, then drive Display_return_win. No longer performing a malfunction prevention routine of the interlink subsystem and no longer performing download processing of the interlink subsystem; And if the Logical Node value is equal to the central station Logical Node value, performing the interlink subsystem download processing. The error prevention of the channel card subsystem according to claim 4, wherein in the step of performing a malfunction prevention operation for each subsystem by performing download processing corresponding to each subsystem according to the download flag, Reading the Connect Type, QSP_port, Output Mode, Function, and Delay threshold values input by the operator; If the Connect Type is not Originator or QSP_port and Redundant_port, HPRS Dest_port are not the same, Output mode is not Input Only, Function value is not In Band or Delay Threshold value is less than 1, Drive Display_down_win If the result is not confirmed, then the channel card subsystem no longer performs the malfunction prevention routine and the QSP subsystem does not perform the download processing any more, and if the result is confirmed, return to the QSP subsystem error prevention algorithm. Wow; If the Connect Type is Originator, QSP_port, Redundant_port, and HPRS Dest_port are the same, Output mode is Input Only, Function Value is In Band, and Delay Threshold is greater than or equal to 1, Channel Card Subsystem Download Processing is performed. Parameter download error prevention method of a radio call data satellite transmission system, characterized in that for executing the step. The method of claim 4, wherein in the performing of the processing for preventing malfunction by each subsystem by performing download processing corresponding to each subsystem according to the download flag, error prevention of the subscriber matching unit subsystem is performed. Read the status of the exchange line and code and QSP interface clock and data rate from the database, and run Display_return_win if the status of interface line and code is not Enable or if the status of QSP interface clock and data rate is not Enable. No longer performing a malfunction prevention routine of the subscriber registration unit subsystem and no longer performing download processing of the PCIB subsystem; If the state of the interface line and the code is Enable and the state of the QSP Interface Clock and the data rate is Enable, checking whether the code value is SPOC and the key-up value is analog by reading the input code and key-up value; Performing download processing of the PCIB subsystem if the values are not all the same, and driving Display_down_win if any of the values are not the same; When the display_down_win is checked and the result is not confirmed, the malfunction prevention routine of the PCIB subsystem is no longer performed and the download processing of the subscriber matching unit subsystem is no longer performed. And performing download processing of the subsystem. The error prevention of the ICU subsystem according to claim 4, wherein in the performing of a processing for preventing malfunction by each subsystem by performing download processing corresponding to each subsystem according to the download flag, Reading the ICU_Type value input by the operator, driving Display_return_win if the value of ICU_Type is not CKL, and then no longer performing a malfunction prevention routine of the ICU subsystem and no longer performing download processing of the ICU subsystem; If the value of ICU_Type is CKL, it reads Time_Control, Shelf_type, Port_speed, Activity_Status values input by the operator and checks whether Time Control value is Auto, Shelf_type value is Redundancy, Port_speed value is 2400bps, and Activity_Status value is Enable. Making a step; If any of the above values are not the same, if Display_down_win is run and the result is not confirmed, the malfunction prevention routine of the ICU subsystem is no longer executed and the download processing of the ICU subsystem is no longer performed, and the result is confirmed. If returned to the ICU subsystem error prevention algorithm; If the Time Control value is Auto, the Shelf_type value is Redundancy, the Port_speed value is 2400bps, and the Activity_Status value is Enable, the parameter of the radio call data satellite transmission system is executed. How to avoid download errors. The method according to any one of claims 5 to 14, wherein Display_down_win, Reading the number of arguments of the corresponding parameter of each subsystem and selecting different parameters in the verification algorithm of each subsystem; And driving the alarm window to output a message informing that the values of the selected parameters are different, and outputting a yes / no button asking whether to continue downloading. How to avoid download errors. The method according to any one of claims 5 to 14, wherein the Display_return_win, Reading the number of arguments of the corresponding parameter of each subsystem and selecting different parameters in the verification algorithm of each subsystem; And driving an alarm window to output a message indicating that the values of the selected parameters are different, and outputting a confirm button to indicate that the current download cannot be continued. How to prevent parameter download errors. The method of claim 4, wherein in the case of performing a malfunction prevention operation for each subsystem by performing download processing corresponding to each subsystem according to the download flag, when there is no corresponding subsystem, the verification is not required. And continually performing a download processing operation.