JPH08163637A - Information providing system - Google Patents

Abstract

PURPOSE: To provide the information providing system which charges a user for neither access nor the use of a pay telephone line unless the user can obtain useful information by accessing a data base through the pay telephone line. CONSTITUTION: The data base 3 which is connected to a PHS network 1 through a line is stored with service information 4 to which an update number 5 is added, and accessed by an access circuit 7 from the user through a portable terminal 9 through the PHS network 1 and a base station 2. At this time, an update number that the user already obtains is also sent to the data base 3 and compared with the update number 5 and a decision circuit 6 decides whether or not service information can be delivered to the user. Further, the data base 3 periodically delivers information to the user through a distributing circuit 8. When the service information 4 from the data base 3 is received by the portable terminal 9 through the PHS network 1 and base station 2, its contents are stored in a memory 11 and displayed at a display device 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information providing system in a simple mobile phone system.

[0002]

2. Description of the Related Art FIG. 8 shows a conceptual diagram of a conventional information providing system using a telephone line. 20 is a database. Service information is stored in the database 20. Reference numeral 21 denotes a terminal device, such as a computer, which is connected to a telephone subscriber line. The database 20 and the terminal device 21 are connected to each other by a public line network 22.

In order for a subscriber of an information providing system to obtain the latest news, there is a method in which the terminal 21 is used to access the database 21 via the public line network 22 by a system as shown in FIG. It is common. In such a system, once accessed, even if the service information in the database 20 has exactly the same contents as the previous access, the service information is transmitted to the accessed user terminal device 21. Therefore, each time the user accesses the database 20, both the public line use fee and the database access fee are charged.

[0004] In addition, at the present time, there is no information providing system as described above which uses a simple mobile phone system.

[0005]

In the conventional information providing system as described above, since the service information owned by the user is not managed as a system, the user pays the database access fee every time he accesses the database. There was a problem of being charged.

Further, the user has to make a line connection each time the database is accessed. for that reason,
Even if the user does not obtain useful information when accessing the database, there is a problem in that the user is charged a public line usage fee.

Further, since the terminal device of the information providing system is connected to the public line, there is a problem that the terminal device is not mobile and the service information cannot be obtained when the terminal device is disconnected from the line. It was

Therefore, the object of the present invention is to obtain useful information when a user accesses a database using a public line because, for example, the service information in the database is not updated. It is to provide an information providing system in which the database access fee and the public line usage fee are not charged even when there is no such situation.

Another object of the present invention is to provide an information providing system in which a terminal device can move freely.

[0010]

In order to solve the above-mentioned problems, the present invention provides a simplified mobile phone system network including a base station having a simplified mobile phone system, and service information every time news is updated. And a database to update
An information providing system comprising: a mobile terminal that is made to access a database; and a transmission means that performs data transmission from the database to the mobile terminal via a simplified mobile phone system network.

In order to solve the above-mentioned problems, the present invention provides a database in which service information that is updated at any time and an update number for each service information that changes each time individual information is updated and access information from a user. And a determining unit that determines the service information that the user finally obtained from the information providing system.

In order to solve the above-mentioned problems, the present invention provides a portable terminal, an access means for accessing a database, a memory for storing response information and service information from the database, and a display means for displaying service information. The information providing system is characterized in that the update number of the service information obtained last is inserted into the parameter in the call setting message when the line is connected to the database by the access means.

In order to solve the above-mentioned problems, the present invention provides a data transmission method in which if the received data cannot be accurately reproduced from the database to the mobile terminal via the simplified mobile phone system network, the data is retransmitted. It is a characteristic information providing system.

In order to solve the above-mentioned problems, the present invention uses a simple mobile phone system to update the service information in the database and the user must access the service information in the database even once. If the user has accessed the service information in the database at least once after connecting the line to respond to the access request from the user, sending the latest news, and updating the service information in the database, do not send the service information. It is an information providing system characterized by not connecting a line.

[0015]

According to the above construction, the present invention uses the simplified mobile phone system, so that the user can obtain service information from the mobile terminal. Further, since the access history to the user's database and the line control are performed using the database update number, it is possible to provide an information providing system in which the service information that has not been updated is not charged.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an example of the configuration of the information providing system according to the present invention. 1 is a simplified mobile phone system network (hereinafter referred to as PHS network). This P
The HS network 1 has a plurality of base stations, and here, the base station closest to the user of interest is the base station 2.

A database 3 is connected to the PHS network 1 by a line. Service information 4 is stored in this database 3, and an update number 5 is assigned to this service information 4. This update number 5
Is updated every time the service information 4 is updated.

The database 3 includes an access circuit 7 for performing a line connection process to a subscribing user when delivering service information, an update number and an update number 5 of service information possessed by the user in response to an access request from the user. And a distribution circuit 8 for periodically distributing the service information to the subscribing users.

The database 3 is accessed by the user via the PHS network 1 by the access circuit 7.
At this time, the update number obtained by the user in advance is also sent to the database and compared with the update number 5 held in the database 3. Based on the comparison result, the determination circuit 6 determines whether to deliver the service information to the user.

Reference numeral 9 is a mobile terminal. In this example, the mobile terminal 9 wirelessly communicates with the PHS network 1 via the base station 2. The mobile terminal 9 includes an access circuit 10 for performing call control to connect to the database 3 and a database 3
Memory 11 for storing update number 5 and service information 4 of
And a display device 12 for displaying service information.

Next, the operation of the information providing system according to this embodiment will be described. FIG. 2 shows an example of the sequence according to this embodiment. In SIG101, a user who wants service information establishes a wireless link with the nearest base station 2 using the mobile terminal 9. Hereinafter, the call control protocol between the mobile terminal and the base station, including the establishment of the wireless link, is the protocol between the mobile terminal and the base station of the simplified mobile phone system (hereinafter referred to as PHS) RCR-ST.
The call control protocol between the base station and the database conforms to D28 and is based on the subscriber line transmission system (hereinafter referred to as DSS).
1)).

When the wireless link is established in SIG101, the mobile terminal 9 sends the call setting to the base station 2 (SIG102). At this time, the user inserts the service information number desired by the user and the update number when the user finally obtained the service information from the database 3 into the parameter in the call setting and sends it out. RCR
-The STD 28 does not define the user-user data that can communicate transparent information between terminals, which is specified in Layer 3 of DSS1 which is a control protocol between a base station and a database. for that reason,
When the above-mentioned update number is transmitted, the calling sub-address parameter or the like is used.

When the call setting SIG102 is received by the base station 2, the call setting conforming to the layer 3 of the DSS1 is transmitted to the PHS network 1 (SIG103). This call setup message routed in the PHS network 1 is stored in the database 3
To reach. The update number of the service information of the calling user is recognized from the parameter of the call setting SIG 103, and this is compared with the current update number 5 of the database 3.
If they do not match, line connection control continues. In FIG. 2, SIG105 to SIG110.
By performing the above procedure between the mobile terminal and the database, the communication becomes possible (SIG111).

That is, the call setup acceptance is transmitted from the database 3 to the base station 2 (SIG105), and when the call setup acceptance is received by the base station 2, the call setup acceptance is transmitted from the base station 2 to the portable terminal 9 (SIG106). . Then, the base station 2 is called by the database 3 (SIG107), and the mobile terminal 9 is further called by the base station 2 (SIG10).
8). In addition, a response is transmitted from the database 3 to the base station 2 (SIG109), and the base station 2 further transmits the response to the mobile terminal 9.
Is sent (SIG110). This response SIG
When the mobile terminal 9 receives 110, the mobile terminal 9 and the database 3 can communicate with each other (SIG11
1).

Incidentally, the processing when it is determined that they match as a result of the above-mentioned comparison will be described later.

By the way, the RCR-STD 28 is currently standardized for communication of only voice data. Therefore, this RCR-S can be processed without any processing.
If the service information from the database 3 is put in the voice data area standardized by the TD 28, many errors occur and correct data cannot be sent. Therefore, the following two methods are proposed as the data structure used during communication.

The first method is a method using exactly the same data structure as the associated control channel (hereinafter referred to as FACCH) used in the PHS link access procedure (hereinafter referred to as LAPDC). Figure 3 shows the FACCH for this
Shows the data structure of.

R in the figure is a burst transient response time, and 4 bits (10.4 μs) are allocated.
The SS (start symbol) to which 2 bits are assigned is a signal for reproducing a clock signal from a received signal and establishing bit synchronization between the base station and the mobile terminal. UW (unique word) is a signal for establishing word synchronization of burst signals, and CI is a signal for channel identification. The type of channel is identified by this CI. The CRC is an error checking bit and corresponds to a CCITT-compliant 16-bit generator polynomial.

Further, 160 bits are allocated to the data area. Among these, N (S) is a transmission sequence number and N (R) is a reception sequence number.
The P bit and the C / R bit have no particular relation to the present invention, and thus the description thereof will be omitted. SAPI is
The RCR-STD 28 indicates the type of system of layer 3, and in this case, it is necessary not to overlap them. The information combination bit indicates whether this frame is the last frame, and 1 bit is allocated. Further, 5 bits are assigned to the remaining information length display bits. Further, after the fourth octet, it is a data field, and 17 octets are reserved for one frame.

The service information sent from the database 3 has a much larger amount of information than the layer 3 information used for connection control and the like. Therefore, the number of octets of the remaining information length cannot be represented by 5 bits assigned to the remaining information length indicating bits. At this time, it is possible to cyclically use by combining the remaining information length display bit and the information combination bit. For example,
When the information combination bit is “0”, this frame is not the final frame but data is present in the next frame, and when the information combination bit is “1”, this frame is the last frame. The remaining information length indicating bit indicates the number of octets of the remaining information length.

The LAPDC error correction technique is basically performed by data retransmission. That is, the reception sequence number N (R) and the transmission sequence number N (S)
Is different from the expected one, it is recognized that the data transfer has failed, and the failed data is retransmitted until the receiving side correctly reproduces it.

Further, the judgment as to whether or not the received data can be correctly reproduced is made by the CRC check using the CRC result bit represented by CRC in FIG. By doing so, it becomes possible to reliably transmit the service information to the mobile terminal.

The second method is a method of transmitting service information using a unique data format to which error correction bits and the like are added. FIG. 4 shows a configuration example of the data format. 4, N (S) is a transmission sequence number and N (R) is a reception sequence number, as in FIG.

The error correction information is used to reproduce correct data by using the check bit of the error correction code, for example, the operation result bit of CRC. However, when correct data cannot be reproduced even after error correction, correct service information is transmitted to the user by retransmitting the data using the above-mentioned reception sequence number and transmission sequence number.

Next, the coding of the data field will be described. The service information 4 stored in the database 3 includes a plurality of pieces of information such as weather forecasts and traffic information. Therefore, it is necessary to send the user the header for recognizing which service information is currently sent to the user and the above-mentioned update number 5.
FIG. 5 shows an example of encoding the data field at this time. The service information number and the update number are stored in the memory 11 of the mobile terminal 9 and used at the next access. The service information is also stored in the memory 11. The user can display the stored service information on the display device 12.
You can see it at any time. Also, the mobile terminal 9 may be provided with an interface adapted to connect to an external device, and the service information stored in the memory 11 may be transferred to an external device such as a personal computer.

If the service information desired by the user is correctly transmitted, the communication ends, the release process for disconnecting the call is performed by the database 3, and the series of operations ends.

That is, the disconnection is transmitted from the database 3 to the base station 2 (SIG112), and the disconnection is transmitted to the portable terminal 9 by the base station 2 which has received the disconnection (SIG11).
3). Upon receiving the disconnection SIG113, the mobile terminal 9 transmits a release to the base station 2 to release the line (SIG11
4). The base station 2 which received this database 3
A release is sent (SIG115). Then, the release completion is transmitted by the database 3 which has received this (S
IG116), the base station 2 receives it, and the base station 2 transmits the release completion to the mobile terminal 9 (SIG117), and the communication is completed.

Next, the above-mentioned SIG102 and SI
The operation when the update number of the service information desired by the user in G103 and the update number of the service information held by the database match will be described. This is the case when the user cannot access the latest information even when accessing the database 3.

At this time, since the user already has the service information 4 held in the database 3, it is not necessary to perform the line connection process from the database 3 to the user.
Therefore, a disconnect message for releasing the call is sent to the base station 2
Is transmitted to the mobile terminal 9 via the (SIG104). When the disconnection message is received by the mobile terminal 9, it is determined that the service information currently owned by the user has not been updated in the database 3. The result is notified to the user by being displayed on the display device 12 of the mobile terminal 9, for example.

It is also possible to perform the same processing from the portable terminal 9 side. Information indicating that the update numbers match is inserted into the parameter in the call setting acceptance message described above and transmitted from the database 3 to the mobile terminal 9 (SIG105). Upon receiving this message, the mobile terminal 9 transmits a disconnection message to the database 3 (S
IG118), line connection processing is not performed. At this time, the result can be displayed on the display device 12 of the mobile terminal 9.

Next, the operation of periodically distributing the latest service information from the database 3 to the subscriber will be described. FIG. 6 shows a sequence showing an example of the operation.
When it is time to distribute the service information, the database 3
The call setting is performed via the base station 2 by the distribution circuit 8 of (SIG
202) It is transmitted to the mobile terminal 9 of the subscriber (SIG
203). At this time, the update number 5 of the service information 4 is given to the transmitted call setting message by the parameter in the message.

When the call setting message to which the update number 5 is added is received by the mobile terminal 9, the update number 5 is compared with the update number stored in the memory 11 of the mobile terminal 9. As a result, if the two do not match, the user does not have the latest information in the updated database, so the service information is delivered by the same method as the access from the mobile terminal 9 described above. .

If the two are the same,
Since the user has the latest information in the updated database 3, there is no need for data distribution, and the line is disconnected. When disconnecting from the mobile terminal 9, a disconnect message is transmitted from the mobile terminal 9 to the database 3 via the base station 2 (SIG204). When disconnecting from the database 3, a connection message is transmitted from the database 3 to the mobile terminal 9 via the base station 2 (SIG2
18).

Next, the service information 4 in the database 3
Now, an operation of automatically informing the subscriber of the update will be described. FIG. 7 shows an example of a sequence showing the operation. When the service information 4 in the database 3 is updated, the access circuit 7 sends a call setup message to the base station 2 to call the subscriber (SIG301). When the call setup message is received by the base station 2, the incoming call is notified to the mobile terminal 9 by using the PCH which is the paging channel standardized by the RCR-STD 28 (SIG30.
2). When an incoming call is detected by the mobile terminal 9, a wireless link is established (SIG303) and the database 3
A call setup message is received from (SIG30
4).

When the mobile terminal 9 recognizes the incoming call from the database 3 by the parameter in the call setting message in the SIG83, the mobile terminal 9 is not connected to the line.
Sends a disconnection message from the base station 2 to the database 3 (SIG305). This mobile terminal 9
The parameter in the call setup message received by the server includes the service information number and the update number. Therefore, using the service information number, the display device 12 notifies the user that the service information 4 in the database 3 has been updated.

[0046]

As described above, according to the present invention, when the mobile terminal accesses the database, the update number given to the service information in the database is transmitted from the mobile terminal, so that the user has already been updated. If the service information held by the service is the same as the service information in the database, circuit switching can be omitted. Therefore, the effect that the line use fee and the database access fee can be eliminated is obtained.

Further, since the service information is communicated using the PHS, the user can obtain the latest service information at any time and place, and it is also possible to obtain the effect of being excellent in mobility.

[Brief description of drawings]

FIG. 1 is a conceptual diagram showing the configuration of an information providing system using PHS proposed by the present invention.

FIG. 2 is a sequence diagram showing a communication process of the information providing system proposed by the present invention.

FIG. 3 is a conceptual diagram showing a structure of an accompanying information channel (FACCH) of PHS in the present invention.

FIG. 4 is a conceptual diagram of a data format used in a data transmission method.

FIG. 5 is a conceptual diagram of a data format of service information transmitted from a database.

FIG. 6 is a sequence diagram showing a communication process when service information is periodically delivered from a database to subscribers.

FIG. 7 is a sequence diagram showing a communication process for notifying a subscriber when service information is updated.

FIG. 8 is a conceptual diagram of a conventional information providing system.

[Explanation of symbols]

 2 base station 3 database 4 service information 5 update number 9 mobile terminal 12 display device

Claims (14)

[Claims] 1. An information providing system using a simplified mobile phone system, a simplified mobile phone system network including a base station having the simplified mobile phone system, and a database for updating service information each time news is updated. An information providing system, comprising: a mobile terminal adapted to access the database; and a transmission means for transmitting data from the database to the mobile terminal via the simplified mobile phone system network. 2. The information providing system according to claim 1, wherein the database is a plurality of service information that is updated at any time and an update number for each service information that changes each time individual information is updated and a user access. An information providing system, comprising: a determining unit that determines the service information lastly obtained by the user from the information. 3. The information providing system according to claim 1, wherein the mobile terminal has access means for accessing the database, a memory for storing response information from the database and the service information, and the service. An information providing system having display means for displaying information, wherein when the access means connects the line to the database, an update number of the service information obtained last is inserted into a parameter in the call setting message. . 4. The information providing system according to claim 1, wherein the data transmission method retransmits from the database to the mobile terminal if the received data cannot be accurately reproduced via the simplified mobile phone system network. An information providing system characterized in that 5. Claim 1 or claim 2 or claim 3.
Alternatively, in the information providing system according to claim 4, if the user has not accessed the service information of the database even after updating the service information of the database by using the simplified mobile phone system, the access from the user is performed. If the user has accessed the service information in the above database at least once after connecting the line to meet the request, sending the latest news, and updating the service information in the above database, the line information is not sent. An information providing system characterized by not performing. 6. Claim 1 or claim 2 or claim 3.
Alternatively, in the information providing system according to claim 4 or claim 5, the database is a distribution means for periodically distributing service information to subscriber users and a parameter in a call setting message when a line is connected to the mobile terminal. The update number of the latest service information is inserted and accessed, and the update number of the service information periodically distributed is stored in the memory of the mobile terminal of the subscriber user. An information providing system characterized in that if the numbers match, the line connection is not continued and the service information is not delivered, and if they do not match, the line connection is made and the service information is delivered. 7. Claim 1 or claim 2 or claim 3.
Alternatively, in the information providing system according to claim 4 or claim 5 or claim 6, when the database individually assigns a service information number to each service information and the mobile terminal accesses the database. An information providing system characterized by performing call setup by adding the service information number together with the update number of the service information. 8. Claim 1 or claim 2 or claim 3.
Alternatively, in the information providing system according to claim 4 or claim 5, the data transmission method includes a reception sequence number indicating a number of received data that can be correctly reproduced and a transmission sequence number indicating a number of data being transmitted. An information providing system which has a data format and has a feature that when the received data cannot be reproduced correctly, the correct data is transmitted by retransmitting the data received by mistake using these sequence numbers. 9. Claim 1 or claim 2 or claim 3.
Alternatively, in the information providing system according to claim 4 or claim 5 or claim 8, the data transmission method is characterized in that error correction information for performing error correction is added and data is transmitted. system. 10. The information providing system according to claim 1, 1 or 2, 3 or 4, 5 or 7 or 8 or 9, wherein access from the mobile terminal is provided. An information providing system characterized in that when the service information update number in the request information matches the service information update number in the database, the service information is disconnected from the database and the line connection is not performed. 11. The information providing system according to claim 1, claim 2, claim 3, claim 4, claim 5, claim 7, claim 8, or claim 10, wherein access from the mobile terminal is performed. When the service information update number in the request information and the update number of the service information in the database match, the database displays a call setup acceptance message including information indicating that the update numbers match. The mobile terminal, which has transmitted the mobile terminal and has received the call setting acceptance message including information indicating that the update numbers match, does not continue the line connection control and does not connect the line. Information provision system. 12. The information providing system according to claim 6, 7, 8 or 9, wherein the service information update number in the access request information from the database and the mobile terminal have An information providing system characterized in that when the update numbers of the service information match, the mobile terminal is disconnected from the mobile terminal and line connection is not performed. 13. The information providing system according to claim 6, claim 7, claim 8, or claim 9, wherein the service information update number in the access request information from the database and the portable terminal have the information. When the update numbers of the service information match, the mobile terminal transmits a call setting acceptance message containing information indicating that the update numbers match, to the information indicating that the update numbers match. The information providing system characterized in that the database which has received the included call setting acceptance message does not continue the line connection control and does not connect the line. 14. Claim 1 or Claim 2 or Claim 3 or Claim 4 or Claim 5 or Claim 6 or Claim 7 or Claim 8 or Claim 9 or Claim 1.
0 or claim 11 or claim 12 or claim 13
In the information providing system described in (1), the delivery means has means for notifying the subscriber user that the service information has been updated when the service information in the database has been updated, and a line connection is made for an incoming call from the database. An information providing system comprising a mobile terminal for notifying a subscriber user that the service information has been updated.