JPH11196469A - Data communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a data communication system by which a proper service is selected and a mutual terminal state is immediately informed of the opposite party depending on the type of data for communication or the type of communication terminals in the case of inter-terminal communication. SOLUTION: In the case of inter-terminal communication, each information of a data type 202, a terminal type 302, state notice 203, 303 is set to information parts 201, 301 of a control slot (SCCH) and the resulting data are transmitted so as to inform a transmitter terminal and a receiver terminal of the data type and the communication terminal type with each other. The system selects a proper service depending on the data type and the communication terminal type. Furthermore, the selected terminal state is informed of the opposite party.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a data communication system in which a transmitting terminal and a receiving terminal communicate using a wireless communication transmission path.

[0002]

2. Description of the Related Art In a conventional digital data communication, when communication is performed via an exchange for wired communication or via a base station for wireless communication, a method for notifying the setting of communication conditions or the status of a partner terminal is as follows. Although various services have been provided, there has been no method for changing the service according to the data type or the partner terminal type.

[0003]

However, in the above prior art, for example, a PHS (Personal Handyphone System)
When data communication between different types of terminals other than voice is performed in terminal-to-terminal communication such as a telephone call between terminals, there is no means for notifying the negotiation and the status of the partner terminal. There is a problem that data communication between the models cannot be performed efficiently and accurately.

[0004] When a unique protocol is adopted,
When setting up the call and entering the communication phase, it is possible to notify the other terminal of the state of the own terminal.
In this case, the terminals need to shift to a call state, and a link is established even when data communication cannot be actually performed between the terminals. As a result, radio resources are wasted and radio resources are wasted. There was a problem that resources could not be effectively used.

[0005] As described above, in the prior art, there is a problem that efficient and accurate data communication cannot be performed with respect to data communication between terminals having two or more data types or services for two or more data terminal types. was there.

[0006] Therefore, the present invention provides a data communication system capable of selecting an appropriate service in accordance with the type of data to be communicated in terminal-to-terminal communication or the type of communication terminal, and immediately notifying each other of the terminal status to each other. The purpose is to provide a system.

[0007]

In order to achieve the above object, the present invention provides a digital data communication apparatus in which a transmitting terminal and a receiving terminal communicate using a wireless communication transmission path as follows. Having means.

First, the transmitting terminal includes communication data type selecting means for selecting a communication data type and communication data type notifying means for notifying the receiving terminal of the communication data type selected by the communication data type selecting means. A receiving terminal for receiving a type of communication data notified by the communication data type notifying unit, and setting a state of the receiving terminal according to the type of communication data received by the receiving unit. Receiving state setting means.

The transmitting terminal includes a transmitting state setting means for setting a state relating to communication in the transmitting terminal, and a transmitting state for notifying the receiving terminal of the state set by the transmitting state setting means. Notification means.

[0010] Further, the receiving terminal has a receiving state notifying means for notifying the transmitting terminal of the state set by the receiving state setting means.

The transmitting terminal includes a communication terminal type selecting unit for selecting a communication terminal type, and a communication terminal type notifying unit for notifying the receiving terminal of the communication terminal type selected by the communication terminal type selecting unit. And the receiving terminal has
Receiving means for receiving the communication terminal type notified by the communication terminal type notifying means; receiving side state setting means for setting a state of the receiving terminal according to the communication terminal type received by the receiving means; Receiving state notification means for notifying the transmitting terminal of the state set by the side state setting means.

With the above configuration, an appropriate service can be selected according to the type of data of both the transmitting and receiving terminals or the type of communication terminal, and the other party's terminal status can be immediately notified to the other party.

[0013] Thus, the communication service can be changed according to the type of data such as text data, still image, moving image, etc. as well as voice, and communication with a different model terminal,
Since the terminal status can be notified even before the communication (call) state is transferred to the slave unit communication between the (personal computer) and the printer, the wireless resources can be effectively used, and the terminal service can be enabled. Can be notified to the partner terminal.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a personal handyphone system (PH) will be described as an embodiment of the present invention.
A service in the case of performing communication between slave units in a wireless communication system using S) as a wireless communication medium will be described as an example.

FIG. 1 is a schematic diagram showing a configuration of a wireless communication system using a PHS as a medium according to an embodiment of the present invention.

This system comprises a private branch exchange 1100, radio base stations 1111a to 1111c, a PHS telephone 11
10a to 1110c. Each of the wireless base stations 1111a to 1111c has an area 1112a.
~ 1112c.

The private branch exchange 1100 is connected to the private branch exchange 110
0 and a public line or PBX 1140, an external line I / F unit 1101 and a radio base station 1111x (x is a
To c) and the exchange 1100, a line control unit 1102 for controlling the connection state of the line, a control unit 1104 for controlling the operation of the exchange 1100, and various types. RAM 1 for storing data
105 and voice mailbox 11 for storing voice information
06.

FIG. 2 shows a wireless terminal (PH) in this embodiment.
It is a block diagram which shows the structure of S telephone 1110x).

The radio terminal body 1200 includes an RF unit 1201 for transmitting and receiving radio signals via an antenna, a modem (modem) unit 1202 for modulating transmission data and demodulating received data, and disassembling / assembling a frame. TDMA
A channel codec unit 1203 for performing processing, error correction processing, scrambling processing, and confidential processing of audio data;
An ADPCM unit 1204 that performs compression encoding processing and decompression decoding processing of audio data.

A digital processing unit (IC) 1211 for processing digital data, a control unit 1205 for controlling each unit, a RAM 1206 for storing various data,
An input unit 1207 for inputting a dial or the like, and an LED / L
A display unit 1208 such as a CD, a transmitter 1209, and a receiver 1210 are provided.

The control unit 1205 notifies each other of the types of data to be communicated between the calling side and the called side at the time of communication between slave units to be described later, so that the data types of both sides can be matched.
It performs processing such as changing the state of the terminal and calling and operating an application for that.

FIG. 3 is an explanatory diagram showing the relationship between slots and the structure of a frame when data communication is performed in a wireless communication system using a PHS as a medium according to this embodiment.

The control slot (SCCH) 100 is used for performing call / response / synchronization when performing communication between slave units. The control slot 100 is composed of data of a start symbol SS, a preamble PR, a uniword (synchronization word) UW32, a channel type CI, and an error check CRC.

The physical slot (TCH) 101
Is used to transmit and receive data (usually voice) when a communication state is established when performing communication between slave units. The physical slot 101 includes a start symbol SS, a preamble PR, a uniword (sync word) U
W16, channel type CI, always associated control channel SA
(SACCH), information element I, and error check CRC data.

The data communication frame 102 is composed of the information element I and is used when performing communication other than voice in communication between slave units. The data communication frame 102 includes a frame type FI, a frame number FFI, a request frame number FBI, a continuation frame identifier indicating a continuation relationship of user data divided into frames, a data length indicating a significant information length of a user data area, User data part, DS used for modulo identification,
And each data of the error check section.

FIG. 15 is an explanatory diagram conceptually showing a specific example of communication between child devices between terminals of different models.

This example shows a case in which the PC 10, the PC 11, the printer 12, and the PHS terminals 13, 14 perform data communication with each other. Note that each of the PC 10, PC 11, and printer 12 has an adapter 10 for wireless communication.
A, 11A and 12A are provided.

FIG. 4 is an explanatory diagram showing the details of the information section (I) of the control slot (SCCH) 200 when performing communication between slave units in the present embodiment. In the figure, reference numeral 201 denotes the configuration of the information section (I).

The data type 202 is an area for selecting a data type which is a feature of the present invention, and can specify voice / text / image / other as the data type. In other words, when the receiving handset (hereinafter referred to as PS) receives the calling service from the calling PS, the data type 20
0 area, the communication to be performed now is the above voice /
It is possible to recognize any of text / image / other.

The status notification 203 is used when notifying the status of the own terminal to the partner terminal. For example, a status rejection due to a mismatch between the terminals, a status of the electric field strength, and a communication using a unique privacy method are performed. Used to notify the partner terminal.

FIG. 5 and FIG. 6 are flow charts showing the operations of the calling side and the called side in the case of performing communication between child units in the present embodiment.

In FIG. 5, the transmitting side PS sets the type of data to be performed at the time of off-hook (S400) and transmits a call to the receiving side PS (S401). Thereafter, upon receiving a response (S402), the contents of the message and the status notification are checked (S403, S404).

If the status notification is a normal sequence (S405), data transmission and reception are continued (S40).
8). If the terminals do not match (S406), on-hook disconnection is performed (S409), the reason or the like is notified to the application, and a display to that effect can be made. Further, in the case of data type rejection (S407) (for example, when a notification is made to transmit text data to a receiving side that can process only voice, or image data is transmitted to a receiving side that can process only voice and text data). If notified, the data type is changed (including, in some cases, a change in the application or a version thereof) (S410), and the communication is resumed.

On the other hand, it is assumed that the receiving side PS is normally in a state of receiving voice and waiting. Then, in FIG. 6, when receiving the SCCH call addressed to itself (S450), the receiving side PS checks the message content (S4).
51, S452), when the data type shown in FIG. 7 is voice (S453), a normal sequence is set in the status notification and a response is returned (S456). If the data type is image (S454), and if the own terminal does not support image data communication, data type rejection is set in the status notification (S457), and notification is made to the calling PS (S459). ).

If the data type is text (S4
55) For example, an application capable of processing the text data is called for processing (S460), a normal sequence is set in the status notification, and a response is returned (S46).
1). However, when the version of the application on the receiving terminal side is different from the data type such as the unique information (S458), a warning to that effect (S462) can be transmitted.

FIG. 7 is a sequence diagram in a case where text data communication is performed by bearer communication in communication between slave units in the present embodiment.

When making a call, the originating PS transmits to the receiving PS together with the call information that the communication to be performed now is based on the text data of the bearer communication (data type = 01) (S500). Upon receiving the call information, the receiving side PS confirms that the data type is text, and if text data communication is possible, sets a normal sequence (status notification = normal sequence) in the status display. Is notified to the transmitting side PS that preparation for text data communication to be performed from (S501) is performed, and data communication is performed.

FIG. 8 is a sequence diagram in the case where text data communication is carried out by bearer communication in the communication between slave units in this embodiment, and the partner terminal is not compatible.

When making a call, the calling PS transmits to the called PS that the communication to be performed now is based on text data of bearer communication (data type = 01) together with the call information (S600). When receiving the call information, the receiving side PS confirms that the data type is text, and if the terminal cannot communicate with the text data, it indicates that the terminal itself does not support text data transfer. In the status display, terminal mismatch (status notification = terminal mismatch) is set to notify that the communication is not supported by text data (S601).

Upon receiving the message, the transmitting PS sets the data type to voice, sets that the communication to be performed now is voice communication (data type = 00), and sends a message to the receiving PS. The data is transmitted (S602). Incoming PS
When receiving a synchronization message, confirm that the data type is voice data, and if the terminal is capable of voice communication, the status notification is normal to notify that the terminal supports voice communication. Is set, and a response message is transmitted to the calling side PS (S603), and thereafter, communication by voice is performed (S604).

As described above, when data communication is performed between the slave units, notifying whether or not the terminal itself can perform the requested data communication can be performed by notifying the type of the data type and the status notification. It is possible to ask whether communication with different data is possible without recalling (recalling), and it is not necessary to use wireless resources unnecessarily.
10. As described in S460, it is possible to perform services including terminal applications such as switching the application to be started based on the data type.

In the first embodiment described above, the service according to the type of data is described as an example. Next, as the second embodiment, the service according to the terminal type is described as an example.

FIG. 9 is an explanatory diagram showing details of the information section (I) of the control slot (SCCH) 300 in the second embodiment. In the figure, reference numeral 301 denotes the configuration of the information section (I).

The terminal type 302 is an area for selecting a terminal type, which is a feature of the present invention.
A computer / camera / printer and the like can be designated.
In other words, when the receiving side PS receives the call from the calling side PS, it is possible to refer to the area of the terminal type 302 and recognize the communication partner to be performed from now on any of the above-mentioned telephone / computer / camera / printer. Become.

The status notification 303 is used when notifying the status of the own terminal to the partner terminal. For example, in the case of a printer or the like, the status notification 303 is used for notifying the partner terminal of a paper jam or a paper feed request.

FIGS. 13 and 14 are flow charts showing the operations of the transmitting side and the receiving side in the case where printer data is transferred by communication between slave units and printout is performed by the printer on the receiving side.

In FIG. 13, the transmitting side PS sets the terminal type of the partner terminal at the time of off-hook (S1300), and transmits a call to the receiving side PS (S1301). Thereafter, upon receiving a response (S1302), the content of the message and the status notification are checked (S1303 / S1304).

If the status notification is a normal sequence (S1305), transmission / reception of print data is continued (S1308). If the terminals do not match (S13
06), on-hook disconnection is performed (S1309), the reason is notified to the application, and a display to that effect is made.

On the other hand, in FIG. 14, when the receiving side PS receives the SCCH call addressed to itself (S1450),
Check the message contents (S1451, S145
2) If the terminal type is a printer (S1453),
A normal sequence is set in the status notification and a response is returned (S14)
56). If the terminal type is a telephone or camera other than a printer (S1454), and if the terminal itself does not support a printer other than a printer, a terminal mismatch is set in the status notification (S1457). Notify (S
1459).

FIG. 10 is a diagram showing a receiving side PS by bearer communication.
FIG. 9 is a sequence diagram in a normal operation when data transfer is performed when is a printer.

First, the calling PS notifies the calling message that the type of the partner terminal is a printer, and notifies the called PS that data transfer for printer printing is to be performed from now (S700).

Upon receiving the call message, the receiving terminal (printer) confirms that the terminal type is a printer, and if the terminal itself is a printer and is in a printable state, a normal sequence is sent to the state notification. Is set, and it is notified that the preparation of the printer is completed (S701). Upon receiving this, the calling terminal advances the sequence and transmits data to be printed during communication to the called PS (printer) (S).
702).

FIG. 11 is a sequence diagram in the case where data communication by bearer communication is performed in the communication between slave units according to the present embodiment, and a paper jam has occurred in the partner terminal (printer).

First, the calling side PS sets the printer as the terminal type (terminal type = 11) in order to notify that the data communication to be performed now is printer printing together with the call message (terminal type = 11). Notify (S80
0). The receiving-side PS receiving the call message confirms that the terminal type = printer, and checks the current status of the printer.

If a paper jam has occurred in the printer, a paper jam (status notification = 101) is set in the status notification to notify the partner terminal that the paper jam has occurred. Send a message to the terminal (S80
1). Upon receiving the message, the transmitting-side PS temporarily transmits a disconnection message (S802), and then restores the printer, performs a re-call, and performs communication.

As described above, when data communication is performed between the slave units, the type and status of the terminal are notified, whereby the status of the partner terminal can be immediately confirmed. Notification of a paper feed request or the like can be made, and the status of the partner terminal can be known while staying at the terminal itself.

FIG. 12 is a sequence diagram showing an operation for notifying an error when the data transfer between the calling terminal and the receiving terminal (printer) is completed and the call is disconnected.

After the message exchange for printer data transfer (S900, S901) has been performed normally and the data transfer (S902) has been performed normally, a failure (feeding) occurs at the receiving terminal (printer). Request, etc.), the receiving terminal stores the ID of the calling terminal and an error notification is performed by calling the calling terminal from the receiving terminal in reverse. Is possible.

[0059]

As described above, according to the present invention,
When performing inter-terminal communication, by notifying the data type and the communication terminal type between the transmitting terminal and the receiving terminal, it becomes possible to select an appropriate service according to the data type and the communication terminal type . Also, it becomes possible to notify the other party of the selected terminal status.

Thus, the communication service can be changed according to not only voice but also data types such as text data, still images, moving images, etc., and communication with terminals of different models, for example, communication between slave units between a personal computer and a printer. Can be notified before the terminal status changes to the communication (call) state, so that the effective use of radio resources and the effect that the terminal service can be reliably notified to the partner terminal can be achieved. is there.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an outline of a wireless communication system according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a configuration of a wireless terminal of the wireless communication system in the embodiment.

FIG. 3 is an explanatory diagram showing a configuration of a wireless communication slot and a frame used in the wireless communication system in one embodiment of the present invention.

FIG. 4 is an explanatory diagram showing details of an information portion of a control slot when performing communication between slave units in the embodiment.

FIG. 5 is a flowchart illustrating an operation of a transmitting side PS when performing communication between slave units in the embodiment.

FIG. 6 is a flowchart illustrating an operation of a receiving side PS when performing communication between slave units in the embodiment.

FIG. 7 is a sequence diagram in a case where text data communication is performed by bearer communication in communication between slave units in the embodiment.

FIG. 8 is a sequence diagram in the case where text data communication is performed by bearer communication in the communication between slave units in the above embodiment, and the corresponding terminal is not compatible.

FIG. 9 is an explanatory diagram showing details of an information portion of a control slot when performing communication between slave units according to another embodiment of the present invention.

FIG. 10 is a sequence diagram of a normal operation in a case where data transfer is performed by a bearer communication when the receiving side PS is a printer in the other embodiment.

FIG. 11 is a sequence diagram in a case where data communication by bearer communication is performed in communication between slave units in the other embodiment and a paper jam occurs in the partner terminal.

FIG. 12 is a sequence diagram showing an operation of performing an error notification when a call is disconnected when data transmission between a calling terminal and a receiving terminal is completed in the other embodiment.

FIG. 13 is a flowchart showing an operation of a calling side PS when performing communication between slave units in the other embodiment.

FIG. 14 is a flowchart showing an operation of a receiving side PS when performing communication between slave units in the other embodiment.

FIG. 15 is an explanatory diagram conceptually illustrating a specific example of communication between child devices between terminals of different types.

[Explanation of symbols]

100, 200, 300 ... control slot (SCC
H), 101: Physical slot (TCH), 102: Data communication frame, 201, 301: Information section, 202: Data type, 203, 303: Status notification, 302: Terminal type.

Claims (10)

[Claims] 1. A data communication system in which a transmitting terminal and a receiving terminal communicate using a wireless communication transmission path, wherein the transmitting terminal includes a communication data type selecting unit for selecting a communication data type; Communication data type notifying means for notifying the communication terminal of the communication data type selected by the communication data type selection means to the receiving terminal, wherein the receiving terminal has a communication data type notified by the communication data type notifying means. Receiving means for receiving the
A data communication system comprising: a receiving-side state setting unit that sets a state of the receiving-side terminal according to a type of communication data received by the receiving unit. 2. The transmission-side terminal according to claim 1, wherein the transmission-side terminal sets transmission-side state setting means for setting a communication-related state in the transmission-side terminal, and sets the state set by the transmission-side state setting means to the reception-side terminal. A data communication system comprising: a transmitting-side state notifying unit for notifying the communication system. 3. The data communication system according to claim 1, wherein the receiving side terminal includes a receiving side state notifying unit for notifying the transmitting side terminal of a state set by the receiving side state setting unit. . 4. The communication terminal according to claim 1, wherein the transmission-side terminal notifies the reception-side terminal of a communication terminal type selected by the communication terminal type selection unit and a communication terminal type selected by the communication terminal type selection unit. A communication terminal type notifying unit, wherein the receiving terminal receives the communication terminal type notified by the communication terminal type notifying unit, and receives the communication terminal type according to the communication terminal type received by the receiving unit. A data communication system comprising: a receiving-side state setting unit that sets a state of a receiving-side terminal; and a receiving-side state notifying unit that notifies the transmitting-side terminal of a state set by the receiving-side state setting unit. . 5. The data communication system according to claim 1, wherein the transmitting terminal and the receiving terminal are PHS terminals. 6. The data communication system according to claim 3, wherein the transmitting side terminal and the receiving side terminal perform data communication by communication between slave units. 7. A wireless terminal for performing communication using a wireless communication transmission path, comprising: a communication data type selection unit for selecting a communication data type at the time of transmission; and a communication data type selected by the communication data type selection unit. And a communication data type notifying unit for notifying the receiving terminal of the communication data type. 8. A wireless terminal that performs communication using a wireless communication transmission path, comprising: a communication terminal type selection unit for selecting a communication terminal type at the time of transmission; and a communication terminal type selected by the communication terminal type selection unit. And a communication terminal type notifying means for notifying the receiving terminal of the communication terminal type. 9. A wireless terminal for performing communication using a wireless communication transmission path, comprising: receiving means for receiving a communication data type and / or a communication terminal type notified from a transmitting terminal at the time of reception; Receiving-side state setting means for setting the state of the terminal itself according to the received communication data type and / or communication terminal type, and receiving-side state for notifying the transmitting-side terminal of the state set by the receiving-side state setting means A wireless terminal comprising a notification unit. 10. A data communication method in which a transmitting terminal and a receiving terminal communicate using a wireless communication transmission path, wherein the transmitting terminal selects a communication data type,
Notifying the selected communication data type to the receiving terminal, receiving the communication data type notified from the transmitting terminal at the receiving terminal, and receiving the communication data type according to the received communication data type. A data communication method comprising setting a state.