JPH07112199B2 - Wireless data communication system using electronic notebook - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless data communication system using an electronic notebook in which a host computer and a wireless terminal of the electronic notebook are connected using a teleterminal system.

[0002]

2. Description of the Related Art In recent years, various so-called electronic notebooks (or electronic system notebooks) having a schedule, a telephone directory, a business card, a clock, a calendar, or various calculation functions have been developed. It is used in various fields. In this electronic notebook, each individual carries a message and inputs a message at a required place at a required time or uses a message already stored.

On the other hand, a mobile communication technique for realizing communication between a mobile body and an office or between mobile bodies has been remarkably advanced. For example, a car terminal, a mobile phone, or a pager is realized by a teleterminal system. Communication by etc. is known. Although these are capable of two-way communication using voice as a medium, they cannot transmit and receive data and cannot transmit messages such as sentences including Kanji data and image information.

Therefore, for example, when a salesperson is visiting a customer, he or she accesses the host computer of the company to check the inventory in real time, takes an order, and retrieves the customer information on the spot. Or, if you cannot answer the question from the customer on the spot, in order to be able to answer on the spot by information retrieval, each salesman has a mobile wireless terminal and a host
It is necessary to construct a data communication system that can send and receive data to and from a computer.

Conventionally, a wired data communication system has been
Various technologies have been established, and a host computer and a wired terminal can be freely connected via a network, enabling transmission and reception of a large amount of data.

However, when it is attempted to connect the electronic notebook as a wireless terminal by using the conventional wired data transmission system and the teleterminal system via various networks, the wired notebook and the wireless notebook are connected. It is necessary to solve various problems because the data communication protocols are completely different and the data processing capacity is limited when the electronic notebook is a wireless terminal.

[0007]

That is, in the conventional wired data communication system, the session with the host computer is disconnected in a predetermined procedure when an abnormality occurs on the line. When the wireless data communication system performs processing in the same manner as the wired system, the communication medium is wireless and the terminal is a mobile body, which causes a problem, for example, in a place where radio waves cannot reach. Further, although the terminals of the wired system have been established to occupy the line, it is not appropriate for the terminals of the wireless system to occupy the teleterminal line because it is necessary for each person to carry around. Also, in order to make an electronic notebook with a limited processing capacity into a wireless terminal, the gateway side must share the processing. Furthermore, since wireless packets are relatively expensive, it is necessary to suppress the transmission of unnecessary data.

Therefore, according to the present invention, the user who uses the electronic notebook as a wireless terminal can handle it in the same manner as a normal wired terminal without paying special attention to teleterminal communication, and the host computer side. An object of the present invention is to provide a wireless data communication system based on an electronic notebook that can be similarly processed as an established wired data communication system.

[0009]

In order to achieve the above object, in a wireless data communication system using an electronic notebook according to the present invention, a host computer is connected to a gateway via a communication control device, and the gateway is a packet switching network. In a wireless data communication system using an electronic notebook, the gateway being connected to an electronic notebook terminal by wireless communication having a procedure for exclusive use of a teleterminal, the wireless base station being connected to the teleterminal system via The electronic notebook terminal has a cluster processing section and an electronic notebook communication frame processing section, and the electronic notebook terminal has a local terminal processing section.

[0010]

According to the present invention, the gateway has the cluster processing section and the electronic notebook communication frame processing section, and the electronic notebook terminal has the local terminal processing section, and by communicating with the gateway according to the communication procedure, The user side of the wireless mobile terminal can handle it as if it were a normal wired terminal without special consideration of teleterminal communication, and the host computer side processes it as an established wired data communication system. It

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to an embodiment shown in the drawings. FIG. 1 is a diagram illustrating a basic configuration of a wireless data communication system using an electronic notebook according to an embodiment of the present invention.

Referring to FIG. 1, the data transmission system of this embodiment includes a host computer 11 and a communication control device 1.
2, a gateway 13, a packet switching network 14, a tele-terminal system 15 including a shared use center (CC) 15a and a radio base station (TT) 15b, a radio base station 1
5b and the electronic notebook terminal 16 that performs wireless communication. Host computer 11 and gateway 13
Is connected by a dedicated line via the communication controller 12, and is a synchronous system based on the high level data link control (HDLC) in the system that provides a standardized interface to the terminal user. You are using data link control. A packet switching service (DDX-P) provided by NTT (Nippon Telegraph and Telephone Corporation) is used for the connection between the gateway 13 and the shared use center 15a of the teleterminal system 15. In addition, the radio base station 15b of the teleterminal system 15
The connection between the electronic notebook terminal 16 and the electronic notebook terminal 16 is performed by wireless communication using a procedure dedicated to the teleterminal.

The present embodiment is an online package that emulates the functions of the conventional kanji information display system. For example, the information sent from the host computer 11 is displayed on the display screen of the electronic notebook terminal 16. And has an emulation function that allows you to input information from the touch panel.

In the above configuration, the hardware of the gateway 13 has, for example, a main storage capacity of 8 Mbytes or more, 1
It is composed of a workstation having an auxiliary storage capacity of 47 Mbytes and 662 Mbytes, a display device of a color display, and an input device such as a keyboard and a mouse. The communication control device 12 uses the V. It consists of a 24 interface, full duplex 2 line communication board and a communication cable. The electronic notebook terminal 16 has, for example, a storage capacity of 128 Kbytes,
An electronic notebook including a display panel of a liquid crystal display, an input device using a touch panel, and the like, and a wireless modem, a rechargeable battery, as a communication device provided in the electronic notebook.
It is composed of an RS232C conversion cable and the like.

The software of the gateway 13 is composed of a basic OS for workstations and application software of a cluster controller described later. Also, the software on the terminal side is
It is composed of basic electronic notebook software and application software.

FIG. 2 is an overall view for explaining the system logical configuration of the embodiment of the present invention.

In the figure, the host computer 11
The modules of the gateway 13 system, which are connected between the respective terminals and the teleterminal system 15, are a device 21, a data link control processing 22, a gateway processing / operation management processing 23, an X. 25 processing 2
It consists of 4. The device 21 is an actual communication input / output port. The data link control processing 22 is processing of the synchronous data link control processing unit based on HDLC which is the basis of the existing network system control.
Gateway processing is synchronous data link control processing ~
X. It provides a gateway service such as data conversion between 25, emulation, distribution of data to an electronic notebook terminal, and operation management processing manages the operation of this system. X. 25 Process 24 is a process of a protocol control processing unit between the packet switching network and the data terminal.

The module of the electronic notebook terminal 16 connected to the above teleterminal system 15 is a device 25.
And a device process 26 and a local terminal process 27. The device processing 26 controls the interface between the wireless base station 15b and the device such as asynchronous communication processing. The local terminal processing 27 is communication processing with the teleterminal system 15 on the electronic notebook side, and the gateway 13 side performs emulation processing and network system control.

FIG. 3 is a diagram for explaining the functional configuration of the gateway according to the embodiment of the present invention.

In the figure, the functions of the gateway are the cluster processing unit 31 and the emulation processing unit 32.
And an electronic notebook communication frame processing unit 33, a teleterminal system processing unit 34, and an operation management processing unit 35. The cluster processing unit 31 uses the protocol of the existing network system and the host computer communication function for communicating with the host computer 11 according to the synchronous data link control procedure, and the data transmitted from the host computer 11. A cluster management function that distributes and transmits data to each logical unit and that transmits data transmitted from each logical unit to the host computer 11, and manages the session state between the electronic notebook terminal and the host computer 11, and It is a part having a logical unit management function of notifying each terminal of the status of the host computer 11 line. Emulation processing unit 32
Is a part having a terminal emulation function for each logical unit. The electronic notebook communication frame processing unit 33 is a part that performs conversion processing of data into communication frames, and is a part that performs transmission suppression processing of unnecessary data in this embodiment. The tele-terminal system processing unit 34 includes an X. In the present embodiment, the retransmission processing is basically performed so that the session with the host computer 11 is not disconnected due to one abnormality on the teleterminal line. Further, the wired line between the host computer 11 and the gateway occupies the logical line during the session opening, but does not occupy the teleterminal line, and appropriately releases the line. . The operation management processing unit 35 is a part that performs an operation management function such as a service operation status display of the physical unit, a service control function, and a failure trace function, or an account function such as a communication start / end time trace and a pay wireless frame trace.

FIG. 4 is a diagram for explaining the functional configuration of the electronic notebook terminal according to the embodiment of the present invention.

In the figure, the function of the wireless terminal is composed of a device control processing unit 41, a local terminal processing unit 42, and a setup processing unit 43. The device control processing unit 41 includes a touch panel control function, a screen control function, an R
This is a part having an S-232C control function and the like. The local terminal processing unit 42 is a unit that performs communication processing with the above-described terminal-side teleterminal system 15. The setup processing unit 43 sets up the display control information,
This is the part that has functions such as touch panel definition and kanji table definition. Note that, due to the data processing capability of the electronic notebook, the necessary network system control processing, emulation processing, etc. are on the gateway side.

That is, the present system becomes a data communication terminal using the teleterminal system 15 by organizing the electronic notebook terminal 16 in the host computer 11, reducing the transmission amount in the wireless section, and the number of terminals is individual. It is configured so that the number of terminals can be defined independently of the number of host logical lines so as to conform to the basic principle of mobile communication of carrying around.

Next, the transmission sequence of the system of the above embodiment will be described. FIG. 5 is a diagram for explaining the basic sequence of making a call on the electronic notebook side according to the embodiment of the present invention.

First, a call request from the electronic notebook side is received by the gateway side. When the gateway side can respond to the call request, it connects to the host computer 11 to establish a session and sends a call response to the electronic notebook side. If the call request cannot be met, a message to that effect is sent. Next, the electronic notebook side sends necessary upward data, and the gateway side sends downward data. Next, when a disconnection request is sent from the gateway side to the electronic notebook side, the electronic notebook side sends a disconnection confirmation response to the gateway side and is disconnected.

FIG. 6 is a diagram for explaining the basic sequence of a call originating on the gateway side according to the embodiment of the present invention. First, the call request from the gateway side is received by the electronic notebook side. The electronic notebook side sends a call response to the electronic notebook side. On the gateway side, after connecting to the host computer 11 by a call response and establishing a session, necessary rising data is sent from the gateway side to the electronic notebook side, and downlink data is respectively sent from the electronic notebook side. . Next, when a disconnection request is sent from the gateway side to the electronic notebook side, the electronic notebook side sends a disconnection confirmation response to the gateway side and is disconnected.

In the wireless data communication system using the electronic notebook having the above-mentioned configuration, the cluster processing unit 3 of the gateway 13
In step 1, the host computer 11 executes a series of terminal processes on the gateway 13 by executing the process according to the communication control procedure of the existing network system and the process in the emulation processing section 32. It seems to have been done. Further, between the gateway 13 and the electronic notebook terminal 16, a communication protocol considering the characteristics of teleterminal communication is adopted, and since the terminal to the user interface function as an existing established terminal,
The user can handle it as if he or she is operating a normal wired terminal. Therefore, by configuring as in the embodiment of the present invention, it becomes possible to easily incorporate the electronic notebook terminal as a system without paying special attention to the teleterminal communication.

Further, on the teleterminal line, the session with the host computer 11 is not disconnected due to one abnormality, and the resending process is performed, whereby a system suitable for a wireless data transmission system is constructed. The wired line between the host computer 11 and the gateway 13 occupies a logical line during session opening, but the number of teleterminal lines is independent of the number of host lines by performing processing to appropriately release the line on the teleterminal line. However, the wireless terminal can be personalized. That is, since the connection time is shortened by time division on the teleterminal line, communication of an extremely large number of electronic notebook terminals is realized. Furthermore, in teleterminal communication, the same data as the previous time on the screen is not transmitted to the terminal, compression processing is performed according to the communication data amount, and unnecessary data transmission suppression processing is performed, making wireless packets relatively expensive. Therefore, data communication can be performed at low cost.

Further, in operation, on the gateway 13, various service operation status display and control functions,
It is possible to implement a teleterminal failure trace function, communication start / end time trace function, and wireless frame amount count.

[0030]

As described in detail above, according to the present invention, the user side of the electronic notebook terminal operates in the same manner as operating a normal wired terminal without special awareness of teleterminal communication. The host computer side can process as an established wired communication system, and the gateway side can properly release the line on the teleterminal line, so that the number of teleterminal lines can be changed from the number of host lines. The effect is that it is independent and can communicate with an extremely large number of electronic notebook terminals.

[Brief description of drawings]

FIG. 1 is a diagram illustrating a basic configuration of a wireless data communication system using an electronic notebook according to an embodiment of the present invention.

FIG. 2 is an overall diagram illustrating a system logical configuration of an embodiment of the present invention.

FIG. 3 is a diagram illustrating a functional configuration of a gateway according to the embodiment of this invention.

FIG. 4 is a diagram illustrating a functional configuration of an electronic notebook terminal according to an embodiment of the present invention.

FIG. 5 is a diagram illustrating a basic sequence of making a call on the electronic notebook side according to the embodiment of this invention.

FIG. 6 is a diagram illustrating a basic sequence of a gateway side call according to an embodiment of the present invention.

[Explanation of symbols]

 11 host computer 12 communication control unit (CCU) 13 gateway 14 packet switching network 15 teleterminal system 15a shared use center (CC) 15b wireless base station (TT) 16 electronic notebook terminal 21 device 22 data link processing 23 gateway processing / Operation management processing 24 X. 25 processing 25 devices 26 device processing 27 local terminal control 31 cluster processing unit 32 emulation processing unit 33 electronic organizer communication frame processing unit 34 teleterminal system processing unit 35 operation management processing unit 41 device control processing unit 42 local terminal processing unit 43 setup Processing unit

Continuation of front page (56) Reference JP-A-4-236541 (JP, A) JP-A-3-38133 (JP, A) JP-A-3-250820 (JP, A) JP-A-2-226920 (JP , A) JP 2-235166 (JP, A) JP 63-308442 (JP, A) JP 55-165042 (JP, A) NEC Technical Report, Volume 42 [6] (1989) Tabe Mikio et al., Overview of Tele Terminal System "P. 90-95

Claims (1)

[Claims] 1. A host computer is connected to a gateway via a communication control unit, the gateway is connected to a teleterminal system via a packet switching network, and a radio base station of the teleterminal system is dedicated to a teleterminal. In a wireless data communication system using an electronic notebook connected to an electronic notebook terminal by wireless communication having a procedure, the gateway has a cluster processing unit and an electronic notebook communication frame processing unit, and the electronic notebook terminal has a local terminal processing unit. A wireless data communication system using an electronic notebook, comprising: