JPH0766763A - Radio communication system - Google Patents

Abstract

PURPOSE:To obtain a system capable of distributing much common data to many and unspecified users in a restricted geographic area and effectively utilizing band frequency without increasing the capacitance of a radio line by previously storing reference data in respective mobile stations as preceding data. CONSTITUTION:A data bank 2, an I/O device 3, fixed radio equipments 4, 5, a terminal storing device 6, and a terminal writing device 7 are connected to a central control device 1 to constitute a system body 10. Respective mobile terminals 8 are connected to the device 1 through respective connection parts so as to be stored in the device 6, and when common data and data to be the reference of data to be charged are directly applied from the device 1 as preceding data, input these data to respective control parts and store them in memories. In the case of reading out each data by a terminal user, the control part is started by an operation display part and the control part reads out the data stored in the memory and displays the read data on a display part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless communication system suitable for distributing common data to a large number of terminal users existing in a limited geographical area.

[0002]

2. Description of the Related Art Conventionally, as a wireless communication system in which a database and a mobile terminal are combined, a system using a car telephone or a system for a large number of unspecified users in a wide area such as a teleterminal is known. .

However, in these wireless communication systems, data unique to each user is transmitted and the service area is wide, so that the user density is low and the data is limited to a relatively small capacity. There is.

By the way, recently, as a wireless communication system whose service area is a limited geographical area such as a stadium, a racetrack, or a large-scale exhibition hall, many terminal users existing in these areas are provided. It is desired to realize a wireless communication system that can quickly distribute a large amount of common data.

That is, as common data handled by such a system, for example, in the case of a stadium, common data such as a player's past race history and current standard performance, and in a racetrack, in addition to the above Data such as the current multiplying rate and the like, and data such as the race forecast on the day that will be charged to each user, and at the large-scale exhibition hall, information on the event on the day and its change information or each venue Common data such as the number of visitors to

[0006]

However, when a large amount of common data is distributed to an unspecified large number of users in such a limited geographical area, the capacity of the wireless line for exchanging these data is extremely large. However, there is a problem that it becomes difficult to effectively use the band frequency and the system becomes large-scale.

The present invention has been made in view of the above circumstances, and in a limited geographical area, a large amount of common data can be promptly distributed to an unspecified number of users, and the wireless line An object of the present invention is to provide a wireless communication system that enables effective use of band frequencies without increasing capacity.

[0008]

According to the present invention, in a wireless communication system composed of a system body and a plurality of mobile terminals, the system body generates connection means for connecting the mobile terminals and basic data. And a means for outputting as pre-data, the plurality of mobile terminals has a storage means for storing the pre-data output from the system main body in a state of being connected to the connection means of the system main body. The mobile terminal is characterized in that it obtains desired data by reading it from the respective storage means.

In the present invention, the system body has means for updating the advance data in response to a data update request given from the mobile terminal via a communication line, and the mobile terminal is the system. There is provided means for updating the contents of the storage means with update data given from the main body via the communication line.

[0010]

As a result, according to the present invention, basic data is stored in each mobile terminal as pre-data, so that each mobile terminal obtains desired data from the pre-stored data. As a result, a large amount of common data can be promptly distributed to a large number of unspecified users.

Further, since data is exchanged via the communication line only in response to a data update request and the data content stored in the mobile terminal is updated, the data transmitted via the communication line is Communication can be minimized and communication line capacity can be minimized.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a schematic configuration of the same embodiment. In the figure, reference numeral 1 is a central control unit, which includes a data bank 2, an input / output unit 3, a fixed radio unit 4,
5, the terminal accommodating device 6 and the terminal writing device 7 are connected to form a system body 10.

Here, the data bank 2 temporarily stores the data, and the input / output device 3 controls the input / output of the data. The fixed wireless devices 4 and 5 input / output real-time data to / from each mobile terminal 8, send a request for real-time data from the mobile terminal 8 to the central controller 1, and control the central controller 1.
Input / output of real-time data transmitted from the mobile terminal 8 to the mobile terminal 8 is executed.

The terminal accommodation device 6 includes a plurality of terminal connection terminals 6
, 62, ..., These terminal connection terminals 61, 62,
The mobile terminal 8 is directly connected to each of the ...
And the data of each mobile terminal 8 can be exchanged.

The terminal writing device 7 is for inputting a device number, information for activating charging target data, and the like when lending each mobile terminal 8. in this case,
The terminal writing device 7 is provided separately from the central control device 1, but may be provided integrally with the central control device 1.

FIG. 2 shows a schematic configuration of the mobile terminal 8 described above. In the figure, 21 is a control unit, which is a control unit 2.
1, a wireless unit 22 having an antenna 221 and a memory 2
3, the operation display unit 24 and the connection unit 25 are connected.

The mobile terminal 8 configured as described above is connected to the central control unit 1 via the connection unit 25 in a state of being accommodated in the above-mentioned terminal accommodation unit 6, and the central control unit 1 directly outputs common data and The basic data of the billing target data is given as prior data, and this data is taken into the control unit 21 and stored in the memory 23.

When the terminal user reads each data, the operation display unit 24 activates the control unit 21, and the control unit 21 reads the data stored in the memory 23 and displays it on the display unit 24. ing. In order to update the data, the central control unit 1 may judge the data update or the terminal user may request the data update. In the former case, the central control unit 1 generates the data. The update data is taken into the control unit 21, the contents are analyzed to update the contents of the memory 23, and in the latter case, the request signal is emitted from the antenna 221 of the wireless unit 22 as a radio wave. This request is taken into the central control unit 1 via the fixed wireless devices 4 and 5 described above, the content is decoded, and when the update data corresponding to the request is generated, the request is transmitted via the fixed wireless devices 4 and 5. Antenna 2 of radio section 22
The received data is sent back to the control unit 21, and the received data is fetched by the control unit 21 to analyze the content and update the content of the memory 23.

FIG. 3 shows the structure of the data string thus exchanged. In this case, the data includes a header section 31 for storing data such as a device number unique to the terminal and data including activation information of charging target data, an encryption key 32 for encrypting common data, and charging target data composed of a plurality of groups. Is composed of a plurality of encryption keys 33 for respectively encrypting, the common data 34, and a plurality of charging target data 35.

In such a data string, as shown in FIG. 1, a plurality of mobile terminals 8 are connected to the terminal connection terminals 6 of the terminal accommodation device 6.
In the state of being connected to Nos. 1 and 62, the data are transferred from the central control device 1 to all the transfer terminals 8 all at once. In this case, the terminal-specific device number data in the header section 31 is transferred to the mobile terminal 8 together with the activation information of the charging target data. The data of the device number unique to the terminal in the header section 31 can be written using the terminal writing device 7 when the terminal is rented. The common data 34 is encrypted with the encryption key 32 and stored as the same content in all mobile terminals 8. In addition, the charging target data 35
Is composed of a plurality of data, and the plurality of data are encrypted and stored by the encryption keys 33 corresponding to the respective data.

Next, the operation of the embodiment configured as described above will be described with reference to the flow chart shown in FIG. First,
The mobile terminal 8 is housed in each of the terminal connection terminals 61, 62, ... Of the terminal housing device 6 (step 401). Then, the central controller 1 gives each mobile terminal 8 basic data of common data and charging target data as advance data, and this data is transferred to each mobile terminal 8 and taken into the control unit 21. , Is written in the memory 23 (step 402).

From this state, when there is a terminal use request for using the mobile terminal 8 in which the prior data is stored (step 403), the central control unit 1 makes the terminal unique to the mobile terminal 8 that has made this request. The device number and the latest billing target data activation information are written in the memory 23 (step 404) and thereafter rented for use (step 405).

Data is added to the mobile terminal 8 from the central controller 1 via the terminal accommodating device 6 or the terminal writing device 7, and the device number and the charging target data activation information are centrally controlled. The data bank 2 by the input / output device 3 or the terminal writing device 7 connected to the device 1.
Is input to the mobile terminal 8 according to the instruction from the central controller 1.

Next, when the terminal user needs common data, the operation display unit 24 activates the control unit 21. Then, the common data stored in the memory 23 is read by the control unit 21 (step 406), and the display unit 2
Displayed in 4 and used. The charging target data is read in the same manner (step 407). here,
The difference is that the mobile terminals 8 that can be used are limited depending on the charging target data activation information.
This can be dealt with by the control unit 21 decoding the header unit 31 stored in the memory 23.

When these readings are performed,
By ending the processing and returning the borrowing transfer terminal 8 (step 400), the process returns to the first step 401, and the above-described processing is repeated if necessary.

Next, when updating the common data (step 408), the central controller 1 edits the data to be updated, generates the update data, and needs to update it via the fixed wireless devices 4 and 5. Only such data is transmitted to each mobile terminal 8 in a broadcast format (step 409). In each mobile terminal 8, by keeping the reception state during the use period, the transmitted signal is received by the antenna 221 of the wireless unit 22, the received data is taken into the control unit 21, and the content thereof is analyzed and stored in the memory 23. The contents will be updated (step 410).

Next, when updating the chargeable data, if the central control device 1 determines that this update is necessary, it can be performed in the same manner as in the case of the above-mentioned common data. on the other hand,
When updating the data according to the request from the terminal user, the mobile terminal 8 waits for a request to update the charging target data (step 411), and the operation display unit 24 activates the control unit 21. Then, the control unit 21 sends an update request signal as a radio wave from the antenna 221 of the wireless unit 22 (step 412).

This request is fetched by the central control unit 1 via the fixed radio units 4 and 5 and its contents are decoded (step 413). The central control unit 1 judges the validity of the update request from the device number or the like by decoding this signal, generates charging target data to be updated in response to the request, and returns it via the fixed wireless devices 4 and 5. (Step 414).

In the mobile terminal 8, the transmitted charging object data is received by the antenna 221 of the radio section 22, the received data is taken into the control section 21, and the content is analyzed to update the content of the memory 23. (Step 415).

Since the update data of the common data and the chargeable data are wirelessly transmitted, it is possible to easily obtain the data by intercepting the update data. By sending by encrypting with an original encryption key, even if intercepted, it is difficult to decrypt if there is no encryption key. Even if decryption is possible, on the memory 23 where the transmitted update data is written. Since the position at is unknown to the unauthorized person, the updated data is meaningless and cannot be used. The encryption key used here cannot be obtained illegally if the transfer terminal 8 is accommodated in the terminal accommodating device 6 and is transmitted in multiple states and is changed for each data transfer in step 402. it can.

Therefore, in this way, the terminal accommodation device 6
While the mobile terminal 8 is connected to the terminal connection terminals 61 and 62, the basic data of the common data and the charging target data is stored in the memory 23 of each mobile terminal 8 as the preliminary data, and the desired data in each mobile terminal 8 is stored. For reading data,
Since the contents are obtained by reading the contents of each memory 23, each mobile terminal 8 can quickly obtain desired data. As a result, even when a limited geographical area such as a stadium, a racetrack, or a large-scale exhibition site is used as the service area, common data such as information on events can be promptly distributed to unspecified mobile terminals. become.

Further, since the necessary signals are transmitted and received via the wireless line only when there is a request for updating the common data and the chargeable data, the capacity of the wireless line does not increase and the band frequency Effective use becomes possible. The present invention is not limited to the above-mentioned embodiments, and can be implemented by appropriately modifying it without changing the gist.

[0033]

According to the present invention, since basic data is stored in each mobile terminal as pre-data, each mobile terminal can obtain desired data from the pre-stored data. As a result, a large amount of common data can be promptly distributed to a large number of unspecified terminal users. In addition, data is exchanged via the communication line only in response to a data update request, and the data content stored in the mobile terminal is updated, so data exchange via the communication line is minimized. The communication line capacity can be minimized and the band frequency can be effectively used. That is, according to the present invention, when the service area is a limited geographical area such as a stadium, a racetrack, or a large-scale exhibition hall, information about these events is promptly provided to each mobile terminal. Therefore, it is possible to save a waste of time for obtaining such information. Moreover,
Since the communication line is used only for updating the data, the capacity of the communication line accompanying the data transfer can be reduced and the frequency can be effectively used.

[Brief description of drawings]

FIG. 1 is a diagram showing a schematic configuration of an embodiment of the present invention.

FIG. 2 is a diagram showing a schematic configuration of a mobile terminal used in an embodiment.

FIG. 3 is a diagram showing a data structure used in one embodiment.

FIG. 4 is a flowchart for explaining the operation of the embodiment.

[Explanation of symbols]

1 ... Central control device 1, 2 ... Data bank, 3 ... Input / output device, 4, 5 ... Fixed wireless device, 6 ... Terminal accommodation device, 61,
62 ... Terminal connection terminal, 27 ... Terminal writing device, 8 ... Mobile terminal, 21 ... Control section, 22 ... Wireless section, 221 ... Aerial line, 23 ... Memory, 24 ... Operation display section, 25 ... Connecting section.

Claims (2)

[Claims] 1. A wireless communication system comprising a system main body and a plurality of mobile terminals, wherein the system main body comprises a connection means for connecting the mobile terminals and a means for generating basic data and outputting it as preliminary data. The plurality of mobile terminals has a storage unit that stores advance data output from the system main body in a state of being connected to the connection unit of the system main body, and the plurality of mobile terminals have desired data. The wireless communication system is characterized by being obtained by reading out from each storage means. 2. The system body has means for updating the advance data in response to a data update request given from the mobile terminal via a communication line, and the mobile terminal has a communication line from the system body. 2. The wireless communication system according to claim 1, further comprising means for updating the contents of the storage means with update data provided via.