JP2001109630A - Program download method, data transmitter and mobile terminal equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve productivity by reducing processing time required for download. SOLUTION: When it is recognized by a control part 21 that data received through a serial interface part 23 are a program for download, a data transmitter 20 stores these data in a memory 22. Afterwards, the control part 21 instructs a TDMA processing part 24 and sends an outgoing control signal (download start message) through a modem part 25, radio part 26 and antenna 27. At such a time, the number of slots to be used for download is designated from 1 to (n) ((n) depends on a portable telephone system to be applied) by the download start message.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a program download method, a data transmission device, and a mobile terminal device, and more particularly, to a program download method capable of reducing the processing time required for download and improving productivity. The present invention relates to a data transmission device and a mobile terminal device.

[0002]

2. Description of the Related Art In a mobile terminal device including a portable telephone, a program is sometimes downloaded in order to perform maintenance or upgrade. As a conventional method for performing this, for example, there is a method disclosed in Japanese Patent Application Laid-Open No. 9-331579.

FIG. 11 is a diagram showing a method of downloading a program disclosed in this publication. In this program download method, a program to be downloaded from the maintenance operation center 100 to the mobile terminal 101 is downloaded to the wireless base station 107 using the control signal line 106,
The data is written to the storage unit 110 of the wireless base station 107. And
The maintenance and operation center 100 calls the mobile terminal 101, connects to the announcement device 104, sets a call connection state,
A program download start request to the mobile terminal 101 is transmitted to the wireless base station 107. The radio base station 107 uses the radio channel 115 used for the call connection, and stores the program written in the storage device 110 into the mobile terminal 10.
Download to 1. The mobile terminal 101 writes the downloaded program in the ROM 114.

As described above, according to the conventional program download method, after the maintenance and operation center 100 calls the mobile terminal 101 for changing the program via the radio switching center 105 and the radio base station 107, the program is transmitted. Since the program is stored in the called mobile terminal 101, when the program of the mobile terminal 101 is changed, the program can be changed without collecting the mobile terminal 101.

[0005] However, in this program download method, a system that has already been put into practical use (a radio base station and a higher-order switching center) is provided with a program download function. There is a problem that it cannot be used. Also, when downloading a program of a mobile terminal, a system for downloading using a line in a wireless section (between a wireless base station and a mobile terminal) and a line in a wired section (between a wireless base station and a higher-order exchange). Therefore, there is also a problem that every time a program download of one mobile terminal is executed, limited line resources are occupied.

For this reason, in Japanese Patent Application No. 11-160951, when an instruction to download a program is issued from a host computer, a download start signal is immediately transmitted continuously using one TDMA slot by wireless communication between terminals. When receiving the download start signal transmitted from the data transmitter 20, the mobile phone that transmits the data to the mobile phone via the channel (control channel, communication channel) receives the data in the slot at the time of reception. A program download method has been proposed in which the program is downloaded by synchronizing the timing and switching to a reception mode in which only one slot is continuously received.

According to this program download method, the program is downloaded via a wireless channel, so that the program can be simultaneously downloaded to a plurality of mobile terminal devices. Also,
Thereby, productivity and maintainability can be improved.

[0008]

However, according to the program download method disclosed in Japanese Patent Application No. 11-160951, since the number of TDMA slots used for downloading is one, the transmission rate is low. There is a problem that it takes a long time to complete the download. For example, in the case of a PHS system, the transmission rate of one slot of TDMA is 32k.
Because of bps, it takes a long time to complete the download depending on the program to be downloaded.

Accordingly, an object of the present invention is to provide a program download method, a data transmission device, and a mobile terminal device that can reduce the processing time required for download and improve productivity.

[0010]

According to the present invention, there is provided a method for downloading a program wirelessly transmitted from a data transmitting device to a mobile terminal device in order to achieve the above object. After transmitting a predetermined signal indicating that the program is transmitted to the data transmitting device using the number of available transmission slots, the program is transmitted in the used transmission slot. In the mobile terminal device, after receiving the predetermined signal in a number of reception slots corresponding to the transmission slot specified by the predetermined signal, receiving the program transmitted after the predetermined signal in the reception slot And storing the program in a predetermined storage means.

[0011] In the above configuration, it is desirable that the transmission is performed via a wireless channel in communication between terminals.

Preferably, the predetermined signal is specified by a control channel of the wireless channel, and the program is specified by a communication channel of the wireless channel.

Preferably, the data transmission device is a mobile phone or a wireless modem.

Further, the present invention is a data transmission device for realizing the above-mentioned program download method, comprising: program acquisition means for acquiring a program to be downloaded to the mobile terminal device; Transmitting means for transmitting, and when the program acquired by the program acquiring means is downloaded to the mobile terminal device, the data transmitting apparatus uses the transmission slots in a number of usable ranges to transmit the program to the data transmitting apparatus. And a transmission control unit that controls the transmission unit to transmit the program in the used transmission slot after transmitting a predetermined signal indicating transmission of the program. A data transmission device is provided.

[0015] In the above configuration, it is preferable that the transmission is performed via a wireless channel in communication between terminals.

Preferably, the predetermined signal is specified by a control channel of the wireless channel, and the program is specified by a communication channel of the wireless channel.

Preferably, the data transmission device is a portable telephone or a wireless modem.

Further, the data transmitting device further includes a receiving unit for receiving data transmitted from the mobile terminal device, and the transmission control unit transmits the signal requesting the receiving unit to retransmit the program. When receiving from the mobile terminal device, it is desirable that the program acquired by the program acquiring means be transmitted to the transmitting means again.

Further, the present invention relates to a mobile terminal device for realizing the above program download method,
Receiving means for receiving data transmitted from the data transmitting apparatus, and when the receiving means receives the predetermined signal from the data transmitting apparatus, a number corresponding to the number of transmission slots specified by the predetermined signal Receiving control means for controlling a receiving slot to be in a receiving state, receiving a program received by the receiving means after the predetermined signal in the receiving slot, and storing the program in a predetermined storage means. A mobile terminal device is provided.

[0020] In the above configuration, the mobile terminal device further includes transmitting means for transmitting data to the data transmitting device, and the reception control means detects an error in a program received by the receiving means. Preferably, the transmission means transmits a signal requesting retransmission of the program.

Preferably, the reception control means stores the program in the predetermined storage means only when a predetermined operation is performed on the operation means.

[0022]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
An embodiment of the present invention will be described in detail.

FIG. 1 is a diagram showing a configuration of a system for realizing the program download method according to the present embodiment. As shown in the figure, the system includes a host computer 10, a data transmitter 20, a cable 30 for exchanging data between them, and a plurality of mobile phones 40.

In the above configuration, the host computer 10 may be, for example, a portable and movable notebook personal computer or a desktop personal computer. Cable 3
0 is desirably an RS-232C cable connectable to such a host computer 10.

FIG. 2 is a block diagram showing the configuration of the host computer 10 and the data transmitter 20. As shown in the figure, the host computer 10 includes a control unit 11 that performs overall control such as input from a keyboard and management of serial data, a memory 12 that stores data necessary for processing, and an input / output unit such as a keyboard. 13 and a serial interface unit 14 for performing serial communication with an external device.

One data transmitter 20 includes a control unit 21 for controlling the entire transmitter 20, a memory 22 for storing data necessary for processing, and a serial interface unit 23 for performing serial communication with an external device. , TDMA (Time Division Multiple Access) processing unit for performing signal processing
4, a modem 25, a radio unit 26, and an antenna 27
And is provided.

FIG. 3 is a block diagram showing the configuration of the portable telephone 40. As shown in FIG. As shown in FIG.
0 denotes a control unit 41 for controlling the entire telephone 40, a memory 42 for storing data necessary for processing, a voice processing unit 43 for generating voice and tone, and a TDM for performing signal processing.
An A processing unit 44, a modem unit 45, a radio unit 46, an antenna 47, and an operation unit 48 used for key input are provided. The memory 42 is a rewritable program memory such as a flash ROM, or a memory such as a readable / writable SRAM.

In the above configuration, in order to download the operation program to the mobile phone 40, first, the serial interface 1 is sent from the host computer 10 side.
4 and an instruction to start the program download are sent to the data transmitter 20 via the cable 30.

When the data transmitter 20 receives the instruction through the serial interface unit 23, the control unit 21 recognizes that it is a serial command for starting program download, and instructs the TDMA processing unit 24 and the modem unit 25. A program download start notification signal is wirelessly transmitted from the antenna 27. Thereafter, the data transmitter 20 starts downloading the program after a certain period of time. This transmission is performed via a wireless channel in communication between terminals.

On the other hand, on the portable telephone 40 side, which has been set in a program download waiting state in advance by operating the keys of the operation unit 48, the notification signal of the program download start received from the antenna 47 is transmitted to the radio unit 46, the modem 45, It is sent to the control unit 41 via the TDMA processing unit 44, and that fact is recognized. At this time, the control unit 41
Recognizes some TDMA slots to be used from the contents of the broadcast signal, and instructs the TDMA processing unit 44 to perform the receiving operation in the frequency and the designated TDMA slot. When the program is actually downloaded, the control unit 41 reads out the data received and stored in the TDMA processing unit 44 and stores it in the memory 42.

FIG. 4 shows that the data transmitter 20 is a portable telephone 4
0 is a format example of a broadcast signal transmitted wirelessly to 0,
(A) is a format example of a download start signal,
(B) is a control slot frame format example, (c)
Indicates an example of a communication slot frame format.

Here, the signal content of the download start message (FIG. 4A) will be described.

Octet 1 indicates a signal type for distinguishing from other control signals. In FIG. 4A, "101"
Although the example of the format "01010" (binary notation) is shown, there is no problem even if the number is other than this number as long as it is different from the format already defined in other systems.

Octet 2 is the number of used slots, that is,
It shows the number of TDMA slots used for downloading. “0” indicated by two bits of bit 0 to bit 1
When "0", one slot is used, when "01", two slots are used, when "10", three slots are used, and "11" is used.
The time means that four slots are used.

Octet 3 indicates a relative slot designation, that is, a relative slot at the time of downloading (designated by a relative number as viewed from the slot transmitting the download start signal). This is a relative slot number used for downloading when the number is one. Then, bits 2 and 3 indicate the second relative slot number used when the number of used slots is 2 or more. Bits 4 and 5 indicate the third relative slot used when the number of used slots is 3 or more. Bits 6 and 7 indicate the fourth relative slot number used when the number of used slots is four.

Octet 4 indicates the radio channel frequency designation, that is, the frequency used at the time of downloading. When a plurality of used slots are designated, all slots use the designated frequency. .

In the portable telephone (program download side) according to the present embodiment, the receiving operation is performed at the designated number and the designated slot number timing in accordance with the notified number of slots, relative slot designation and radio channel frequency designation. Is what you do.

FIG. 5 is an explanatory diagram of signal transmission / reception timing of a TDMA type portable telephone system (second generation digital cordless telephone system (here, PHS: Personal).
FIG. 2 is an explanatory diagram exemplifying a Handy phone System). The notification signal of the start of the program download transmitted from the data transmitter 20 is transmitted in the same manner.

Hereinafter, a signal transmission timing of a mobile phone base station in a general digital mobile phone system using the TDMA system will be described with reference to FIG.

In PHS, the radio access method is TDMA-
TDD (Time Division Multiple Access-Time Division
Duplex) system, and the number of TDMA multiplexes is four. Therefore, in the image of the transmission / reception slot of the base station, transmission slots 1 to 4 and reception slots 1 to 4 appear alternately. If the base station transmits a control signal in slot 1, slot 1 appears every 5 msec. However, the control signal is not transmitted every 5 msec, but is transmitted at intervals determined by the system (for example, in a PHS public system, slot 1 appears every 100 msec).

When shifting to the communication state, communication is performed at the frequency and slot assigned by the base station using the control signal.
In this example, since slot 1 is used as a control slot, slots 2 to 4 are used as communication physical slots.

In the communication state, transmission and reception are repeated every 2.5 msec, unlike transmission of a control signal. The signal format of one transmission or reception frame is shown in FIG.
As shown in (c), considering the case of reception on the telephone side of the PHS system, a signal is received every 5 msec, and the data portion (I portion) of the received signal
Is 160 bits.

In this embodiment, program data is downloaded using slots (control slots, communication physical slots) in the TDMA system. That is, the control slot frame format (FIG. 4)
(B)), a signal of a download start message (FIG. 4 (a)) defined in advance as a control signal format is added to the I portion, and the communication slot frame format (FIG.
The program data for download received from the host computer 10 is loaded on the I part of (c)) and transmitted to the mobile phone 40. The mobile phone 40 sets this I
The program data contained in the portion is stored in the memory 42, and the program is updated.

The control signal (program download start signal) used in the present embodiment is not transmitted at intervals (every 100 msec in the PHS public system) used in the actual PHS system, but is transmitted in one transmission. The same control signal is continuously transmitted using a slot (a slot that appears once every 5 msec in the PHS system).

Of course, the synchronization processing is also different from the synchronization processing in the PHS system. That is, in the present embodiment, unlike the base station in the PHS system, the data transmitter 20 does not transmit the incoming signal or the broadcast information on the system, and transmits from the host computer 10 through the serial interface unit 14 and the cable 30. When an instruction to download a program is issued, the mobile phone 4 immediately transmits a download start signal using the plurality of slots of the TDMA continuously through terminal-to-terminal communication via the above-mentioned wireless channel (control channel, communication channel).
Send to 0. The mobile phone 40 that receives this also receives P
Unlike a mobile station in an HS system, the mobile station does not have a concept such as standby or battery saving, and only waits for a download start signal by performing a special key operation. The reception waiting state at this time is a state in which all slots without the concept of the TDMA slot are continuously received, and in this state, reception of a download start signal transmitted from the data transmitter 20 is waited. Then, when the download start signal is received, the reception timing is synchronized with the slot at the time of reception, and the reception mode is switched to the reception mode for continuous reception.

Here, the operation of downloading the program will be described by taking as an example a case where the operation program of the mobile phone 40 immediately before shipment is updated to a new version and preparation for shipment is performed.

In such a case, first, the operator performs a key input of a special operation, which is the operation unit 48 of the mobile phone 40, and waits for reception of a program download start message. Here, all the mobile phones 40 to be downloaded are set in a state of waiting for reception of a program download start message.

Next, in the host computer 10,
The operator inputs a command of a program download instruction from the input / output unit 13 such as a keyboard. When the control unit 11 recognizes the command input, the control unit 11 transfers a new program for the mobile phone 40 stored in the memory 12 to the data transmitter 20 through the serial interface unit 14 and the cable 30.

The data transmitter 20, when the control unit 21 recognizes that the data received through the serial interface unit 23 is a download program, stores the data in the memory 22. After that, the control unit 21
The DMA processing unit 24 is instructed, and the modulation / demodulation unit 25, the radio unit 2
6 and an antenna 27 to transmit a downstream control signal. Here, the downlink control signal refers to a signal of a download start message (FIG. 4A) defined in advance as a control signal format, and is superimposed on the I portion of the control slot frame format (FIG. 4B). And sent.

As described above, the transmission timing of the control signal from the data transmitter 20 is such that the transmission is performed every time a transmission slot appears at regular intervals. Also, the data transmitter 20
Starts transmission of a synchronization signal (the part I in FIG. 4B is idle data) using the frequency and the communication slot notified in the control signal. In the download start message, the number of slots used at the time of downloading is 1 to n (n depends on the applicable mobile phone system. For example, in the case of a PHS system, since the system is a 4TDMA system, the maximum value of n is 4 ) Can be specified.

In the case of a PHS system as an example, a synchronization signal is transmitted at each transmission slot timing that appears every 5 msec. After a lapse of a predetermined time, the data transmitter changes the synchronization signal being transmitted in the communication physical slot into a signal of the communication frame format, and the I portion of the signal contains the download program data received from the host computer. To start sending. At this time, needless to say, it is necessary to define a message for starting the download on the communication physical slot and for notifying the mobile phone that the download has been completed at the end of the download. In the frame format (FIG. 4C), for example, C
Transmit by changing the I part.

In the data transmitter 20, when the control unit 21 recognizes that the download has been completed, it instructs the serial interface unit 23 and notifies the host computer 10 via the cable 30 to that effect. In the host computer 10, when the control unit 11 receives the notification via the serial interface 14, it recognizes that the download has been completed.

On the other hand, when the control unit 41 of the portable telephone 40 that has waited for the reception of the program download start message recognizes that the program download start message from the data transmitter 20 has been received, the TDMA processing unit 44 uses the notified slot and frequency. To start receiving the synchronization signal transmitted by the data transmitter 20 in the designated slot. When the number of used slots is two or more in the download start message, it is necessary to switch a plurality of designated slots to the receiving operation.

After recognizing that the synchronization signal has changed to a communication slot format signal and receiving a signal indicating the start of download, the control unit 41 of the mobile phone 40
Reads out the download data from the TDMA processing unit 44 at each reception timing and stores it in the memory 42. This operation is performed until a signal notifying the end of the download is received. When recognizing that the control unit 41 of the mobile phone 40 has received the signal notifying the end of the download,
Perform a self-reset and start operation with the newly downloaded program.

Next, each operation of the data transmitter 20 and the portable telephone 40 will be described in detail with reference to the flowcharts of FIGS.

First, referring to FIG.
The detailed operation at the time of downloading the program will be described. Upon receiving the download instruction from the host computer 10, the data transmitter 20 is in a state of waiting for reception of program data for the mobile phone 40, and starts processing.
First, the data transmitter 20 receives the data transmitted from the host computer 10 and stores it in the memory 22 (step S601), and determines whether the received data is program data for the mobile phone 40 (step S60).
2).

If the received data is program data for the mobile phone 40 (judgment: Yes), step S60
The process returns to 1 and waits for data reception from the host computer 10 to store the data in the memory 22. On the other hand, if the received data is not the program data for the mobile phone 40, that is, if the received data is data indicating the completion of the transfer of the program data (decision: No), the transmission slot is determined using the predetermined frequency. Determines how many slots are available (step S603), sets the transmittable slots to the transmission state (step S604), and uses the transmission timing determined above to download to the mobile phone 40 by radio using the transmission timing. Is transmitted in accordance with the control signal transmission timing, with a signal (download start message) notifying that the control signal is to be started (step S605).

Here, the determination of the transmittable slot in step S603 is made by determining whether there is interference or the like to the frequency to be used at the slot timing appearing at the free-running timing. If there is interference, the slot is not used.

Thereafter, at the designated frequency and TDMA slot number (a plurality of TDMA slots can be designated according to the contents of the broadcast) notified by the download start message, a synchronization signal for causing the portable telephone 40 to stand by for downloading the program. (Step S6)
06). Then, a timer is started to transmit the control signal for a predetermined time (step S607), and it is determined whether or not the timer has timed out (step S60).
8) If not timed out (judgment: No), wait until timed out, and if timed out (judgment: Yes), transmit the synchronization signal in the slot in which the synchronization signal is transmitted (similar to the above-described synchronization signal transmission, transmit in multiple slots) Can be changed to a signal in the communication frame format, and a message to start downloading is transmitted in the I portion of the signal (step S).
609).

Next, the program data received from the host computer is transmitted (step S61).
0). This program data transmission is performed in the slot from which the download start signal was sent. Note that this program data transmission can be transmitted in a plurality of slots as in the case of the synchronization signal transmission described above.

FIG. 7 is a flowchart showing the program data transmission process. First, the first of the transmission slots
It is determined whether the slot can be transmitted (step S7).
01). When the first slot can be transmitted (judgment: Ye
s), and performs transmission processing of the first slot (step S70)
2) Prepare the next transmission data (step S70)
3). Next, it is determined whether the second transmission slot is transmittable (step S704). If the second slot can be transmitted (determination: Yes), the transmission processing for the second slot is performed (step S705), and the next transmission data is prepared (step S706). Next, it is determined whether the third transmission slot can be transmitted (step S707). If the third slot can be transmitted (judgment:
Yes), the transmission process of the third slot is performed (Step S)
708), and prepare for the next transmission data (step S7)
09). Next, it is determined whether or not the fourth transmission slot can be transmitted (step S710). If the fourth slot can be transmitted (determination: Yes), the transmission processing for the fourth slot is performed (step S711), the next transmission data is prepared (step S712), and the processing ends.

If the result of each determination is No, the process proceeds to a process of determining whether the next transmission slot is usable. Thus, a maximum of four frames can be transmitted in one TDMA cycle.

Then, it is determined whether or not the download is completed every frame transmission (step S611). If the download has not been completed (determination: No), the next program data is transmitted. When download is completed (judgment: Ye
s) In the slot where the program was being downloaded, a message to the effect that the download is to be completed is transmitted in the I portion of the communication frame format signal (step S612). After that, the host computer 10 is notified of the end of the program download via the serial interface 23 (step S613). After the notification, the data transmitter 20 ends the process.

Next, the operation of the portable telephone 40 at the time of downloading a program will be described in detail with reference to FIGS. The mobile phone 40 waits for a download start message by a special key operation from the operation unit 48, and starts processing. First, the mobile phone 40 starts with an IPL (Initial Pro
A gram Loader) program is developed in the memory 42 (step S801). Here, the IPL program means that program data downloaded from the data transmitter 20 is stored in the memory 42, a significant signal (for example, a control signal) from the data transmitter 20 is determined, This is a program for performing hardware control including the radio unit 46 and the TDMA processing unit 44 in order to synchronize with the signal transmitted by the unit 20. This IPL program is stored in advance in the program of the mobile phone 40, and is a program that operates only by performing a special key operation from the operation unit 48.

After that, the operation is restarted by the IPL program (step S802), and the radio frequency for receiving the download start message transmitted by the data transmitter 20 (this radio frequency is used by both the data transmitter side and the mobile phone side) A predetermined frequency is assumed to be used) (step S803). Then, reception setting for all slots of the TDMA frame is performed (step S80).
4). Thereafter, it is determined whether or not the download start message has been received (step S805). If it has not been received (decision: No), it waits for reception again. If it has been received (decision: Yes), it indicates the notified used slot. The reception is set in accordance with the number and relative number slot designation (step S8).
06, step S807), the receiving frequency is set based on the designated frequency notified in the download start message (step S808). Further, the receiving slot is set (step S809), the designated slot notified by the download start message is set to the receiving state (a plurality of receiving slots are set to the receiving state at the specified frequency according to the notified message content), and the synchronization signal is set. Is received (step S810).

Next, it is determined whether or not a signal to start download has been received in the slot receiving the synchronization signal (step S811). This determination step is repeatedly executed until the is received. If it has been received (determination: Yes), the download data is stored in the memory 42 (step S).
812). In this case, the memory 4 of the mobile phone 40 is already
2 is updated to the memory area of the old operation program stored in 2.

FIG. 9 is a flowchart of a process for storing the download data in the memory. First, it is determined whether or not reception has been performed in the first slot (step S90).
1). If received in the first slot (decision: Yes),
Fetch the received data and store it in memory (step S
902). Next, it is determined whether or not the signal is received in the second slot (step S903). If the data is received in the second slot (determination: Yes), the received data is fetched and stored in the memory (step S904). Next, it is determined whether or not the signal has been received in the third slot (step S905).
If received in the third slot (determination: Yes), the received data is fetched and stored in the memory (step S90)
6). Next, it is determined whether or not the signal is received in the fourth slot (step S907). When the data is received in the fourth slot (determination: Yes), the received data is fetched and stored in the memory (step S908).

If the judgment is No in each judgment processing, the processing proceeds to the reception state judgment processing of the next slot. Thus, up to four in one TDMA cycle
The frame can be received.

Next, it is determined whether or not a signal indicating that the download has been completed has been received (step S813). If the download completion signal has not been received (determination: No), the process returns to step 812, and the next download data The memory 42
After that, the determination in step S813 is performed again. When the download end signal has been received (judgment: Ye
s) and restart with the new program (step S8)
14), complete the download process.

As described above, according to the present embodiment, TD
Change the number of TDMA slots to be used by using the wireless channel access method already possessed by MA digital mobile phones (in the case of a PHS system, the maximum number of slots is 4 slots because of 4TDMA = bidirectional communication is possible at a transmission rate of 128 kbps) ) By doing so, the processing time required for downloading can be reduced.

<Other Embodiments> Although the above embodiment does not particularly take into account transmission errors on the radio, downloaded programs can be simply monitored on the mobile phone side for errors in received frames. Data errors can be detected. Thereby, when a transmission error frame of the download data is received, a retransmission request is made to the data transmitter, so that the program can be surely downloaded. The other embodiments focus on this. Since the configuration is basically the same as that in the above-described embodiment, only the differences will be described using the same reference numerals used in the description.

In this embodiment, when the portable telephone system which downloads the program is a PHS, FIG.
According to the communication frame format of (c), the program data is loaded on the I portion.

When judging whether or not the data of this frame is correct data, when the CRC (Cyclic Redundancy Check) calculation result of the received frame and the value of the CRC added to the frame coincide with each other, the portable telephone 40 determines that frame. Can be determined to be correct (such a function is a function that a general mobile phone already has in hardware, and the present embodiment utilizes such a function of monitoring a received frame). .

If there is a mismatch, it can be determined that the data of the frame is erroneous, and the portable telephone 40 uses the up slot (see FIG. 5) to determine which frame has an error. , It is possible to request retransmission of the program download data.

When a retransmission request for download data occurs, the data transmitter 20 retransmits the download data to the frame where the error occurred.

The portable telephone 40 checks the received frame number (see FIG. 8). If the received frame numbers are not consecutive, it is determined that the download data has been retransmitted, and the received data is received after the error frame. Discard the data and receive the retransmitted data. here,
The frame number of the communication frame format is, for example, a number that is counted up and added each time the data transmitter 20 transmits. As described above, reliable program download can be performed.

The data transmitter used in each of the above embodiments can be widely applied to any transmitter having a TDMA processing section, a radio section, a modulation / demodulation section, an antenna, and the like. Or a wireless modem.

Further, in each of the above embodiments, the target of downloading the program is a portable telephone, but the present invention is not limited to this, and any apparatus that can perform wireless communication can be widely applied. It is. At the time of application, various modifications may be made without departing from the gist of the present invention, depending on the target device or system.

[0079]

As described above, according to the program download method, the data transmission device and the mobile terminal device of the present invention, the data transmission device uses the program in the data transmission device by using the number of transmission slots that can be used. After transmitting a predetermined signal indicating that the transmission is performed, a program is transmitted in the used transmission slot, and in the mobile terminal device, a predetermined number of reception slots corresponding to the transmission slots specified by the predetermined signal are transmitted. After receiving the signal, the program transmitted after the predetermined signal is received in the receiving slot and stored in the predetermined storage means, so that the processing time required for downloading can be reduced, and the productivity can be reduced. Improvement can be achieved.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a system for realizing a program download method according to an embodiment.

FIG. 2 is a block diagram showing a configuration of a host computer and a data transmitter.

FIG. 3 is a block diagram illustrating a configuration of a mobile phone.

FIG. 4 is a diagram illustrating an example of a transmission data format of a data transmitter.

FIG. 5 is an explanatory diagram of signal transmission / reception timing of a TDMA mobile phone system.

FIG. 6 is an operation flowchart when a program is downloaded by the data transmitter.

FIG. 7 is a flowchart showing details of a program data transmission processing operation of the data transmitter.

FIG. 8 is an operation flowchart at the time of downloading a program of the mobile phone.

FIG. 9 is a flowchart showing details of a download data storage processing operation of the mobile phone.

FIG. 10 is a diagram showing a configuration of Ich data of a communication slot frame.

FIG. 11 is a block diagram showing a configuration of a conventional technique.

[Explanation of symbols]

 Reference Signs List 10 host computer 11 control unit 12 memory 13 input / output unit 14 serial interface unit 20 data transmitter 21 control unit 22 memory 23 serial interface unit 24 TDMA processing unit 25 modulation / demodulation unit 26 wireless unit 27 antenna 30 cable 40 mobile phone 41 control unit 42 Memory 43 Audio processing unit 44 TDMA processing unit 45 Modulation / demodulation unit 46 Radio unit 47 Antenna 48 Operation unit

Claims (12)

[Claims] 1. A method for downloading a program wirelessly transmitted from a data transmitting device to a mobile terminal device, wherein the data transmitting device uses the number of transmission slots available in the data transmitting device to transmit the data. After causing the device to transmit a predetermined signal indicating that the program is transmitted, the device transmits the program in the used transmission slot, and the mobile terminal device transmits the program to the transmission slot specified by the predetermined signal. After receiving the predetermined signal in a corresponding number of reception slots, the program transmitted after the predetermined signal is received in the reception slot and stored in predetermined storage means. Download method. 2. The method according to claim 1, wherein the transmission is performed via a wireless channel in communication between terminals. 3. The program download according to claim 1, wherein the predetermined signal is specified by a control channel of the wireless channel, and the program is specified by a communication channel of the wireless channel. Method. 4. The method according to claim 1, wherein the data transmission device is a mobile phone or a wireless modem. 5. A data transmission device for realizing the program download method according to claim 1, wherein: a program acquisition means for acquiring a program to be downloaded to the mobile terminal device; Transmitting means for transmitting, and when the program acquired by the program acquiring means is downloaded to the mobile terminal device, the data transmitting apparatus uses the number of transmission slots that can be used to transmit the program to the data transmitting apparatus. And a transmission control unit that controls the transmission unit to transmit the program in the used transmission slot after transmitting a predetermined signal indicating that the transmission is performed. Data transmission device. 6. The data transmitting apparatus according to claim 5, wherein the transmission is performed via a wireless channel in communication between terminals. 7. The method according to claim 6, wherein the predetermined signal is specified by a control channel of the wireless channel, and the program is specified by a communication channel of the wireless channel. Data transmission device. 8. The data transmission device according to claim 6, wherein the data transmission device is a mobile phone or a wireless modem. 9. The data transmitting apparatus further comprises receiving means for receiving data transmitted from the mobile terminal apparatus, wherein the transmission control means transmits a signal requesting the receiving means to retransmit the program. 9. The data transmission device according to claim 5, wherein, when receiving from a mobile terminal device, the transmission unit causes the transmission unit to transmit the program acquired by the program acquisition unit again. 10. A mobile terminal device for realizing the program download method according to claim 1, wherein: a receiving unit for receiving data transmitted from the data transmitting device; and wherein the receiving unit includes the data transmitting device. When the predetermined signal is received from the reception signal, a number of reception slots corresponding to the transmission slots designated by the predetermined signal are set to a reception state, and a program received by the reception unit after the predetermined signal is transmitted to the reception slot. A mobile terminal device comprising: a reception control unit for performing a control of receiving and storing in a predetermined storage unit. 11. The mobile terminal device further comprises transmitting means for transmitting data to the data transmitting apparatus, wherein the receiving control means detects an error in a program received by the receiving means, The mobile terminal device according to claim 10, wherein a signal for requesting retransmission of a program is transmitted to the transmission unit. 12. The reception control unit according to claim 10, wherein the storage of the program in the predetermined storage unit is performed only when a predetermined operation is performed on an operation unit. 12. The mobile terminal device according to 11.