JP2001119755A - Data communication method and system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain data communication without noticing a type of a connection service in mobile object communication. SOLUTION: A user data layer 2 module 10 consists of a plurality of kinds of layer 2 protocol modules relating to user data. A dialup module 11 applies protocol conversion with respect to a control signal to control a wireless communication unit. The dialup module 11 selects a proper protocol from the user data layer 2 module 10 according to the control signal at channel connection/ interruption and switches it.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data communication apparatus for performing data communication using a mobile station, and more particularly to a wireless communication infrastructure capable of providing a plurality of connection services such as unrestricted digital bearer connection, packet connection, and modem connection. Data communication can be performed on the structure without being aware of the type of connection service.

[0002]

2. Description of the Related Art Currently, mobile telephone systems and simplified portable telephone systems (PHS) are at the core of the infrastructure of mobile computing. 2. Description of the Related Art In a digital mobile phone system (PDC: personal digital cellular), a modem for performing protocol conversion (conversion between user digital data and analog data) in a network to match with an existing modem communication terminal. There are communication services and IP (Internet Protocol) based packet communication services. In the PHS system, a PIAFS (Personal Internet Access Forum Standard) unrestricted digital bearer communication service is mainly used. When a user uses these services, it is necessary to separately prepare interfaces (data communication card, adapter, etc.) corresponding to each service. Assuming that you use these services,
It is very troublesome to carry or store all the corresponding data communication cards and adapters, and to reconnect them to information devices such as mobile terminals according to the service.

In the future, IMT2000 (International Mobile Telecommunication 200)
With the introduction of the broadband CDMA (code division multiple access) communication system toward 0), a plurality of data communication connection services such as a modem communication service, a packet communication service, and an unrestricted digital bearer communication service can be provided by one infrastructure. Will be available. Accordingly, it is expected that the interface and the line connection procedure between general terminals in each data communication connection service will be standardized to some extent. Therefore, the difference in the protocol stack on the interface side is the data link layer related to user data. The protocol difference (air interface data link control and end-to-end data link control during unrestricted bearer communication) is aggregated.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above circumstances, and has as its object to absorb the difference between the protocol stacks described above and to share a data communication interface. I do.

[0005]

According to the present invention, in order to achieve the above object, in a data communication method for performing data communication on a wireless communication infrastructure capable of providing a plurality of connection services, line connection information is obtained. Performing the step of determining a connection service based on the acquired line connection information; selecting a data link layer processing module corresponding to the determined connection service; receiving user data; and selecting the data link layer. And performing a conversion corresponding to the connection service on the user data using a processing module.

In this configuration, it is possible to automatically deal with a plurality of connection services.

[0007] In this configuration, the plurality of connection services are, for example, an unrestricted digital bearer connection, a packet connection, and a modem connection.

The connection service may be determined based on the connection service identifier included in the outgoing call signal, or the connection service may be determined based on the connection service identifier included in the incoming call signal. Good.

According to the present invention, in order to achieve the above object, means for acquiring line connection information in a data communication apparatus for performing data communication on a wireless communication infrastructure capable of providing a plurality of connection services. Means for determining a connection service based on the obtained line connection information, means for selecting a data link layer processing module corresponding to the determined connection service, means for receiving user data, and a selected data link layer processing module Means for performing a conversion corresponding to the connection service on the user data by using the user data.

In this case, it is possible to automatically deal with a plurality of connection services. There is no need to prepare multiple data communication cards and adapters.

According to the present invention, in order to achieve the above-mentioned object, a mobile station that performs mobile communication on a wireless communication infrastructure capable of providing a plurality of connection services and an information processing terminal are provided. To the data communication adapter to be connected, means for acquiring line connection information, means for determining a connection service based on the acquired line connection information,
Means for selecting a data link layer processing module corresponding to the determined connection service; means for receiving user data; and conversion of the user data corresponding to the connection service using the selected data link layer processing module. Means are provided.

In this configuration, it is possible to automatically cope with a plurality of connection services. There is no need to prepare multiple data communication cards and adapters.

In this configuration, the main body of the data communication adapter may be a card type, and may be mounted in the card type slot of the information terminal.

According to the present invention, in order to achieve the above object, an information processing terminal connected to a mobile station performing mobile communication on a wireless communication infrastructure capable of providing a plurality of connection services includes: Processing means for processing user data; means for obtaining line connection information; means for determining a connection service based on the obtained line connection information; means for selecting a data link layer processing module corresponding to the determined connection service And means for receiving user data, and means for converting the user data according to the connection service using the selected data link layer processing module.

[0015] Also in this configuration, it is possible to automatically cope with a plurality of connection services. There is no need to prepare multiple data communication cards and adapters.

The information processing device may be a portable terminal such as a portable personal computer or a personal digital assistant, or may be a stationary information processing device in some cases.

According to the present invention, in order to achieve the above object, means for acquiring line connection information by a mobile station performing mobile communication on a wireless communication infrastructure capable of providing a plurality of connection services. Means for determining a connection service based on the obtained line connection information, means for selecting a data link layer processing module corresponding to the determined connection service, means for receiving user data, and a selected data link layer processing module And means for performing conversion corresponding to the connection service on the user data by using.

Also in this configuration, it is possible to automatically cope with a plurality of connection services. There is no need to prepare multiple data communication cards and adapters.

The mobile station is a mobile phone, a simplified mobile phone, or a dedicated data communication device. However, in some cases, the mobile station may be a fixed wireless access device.

[0020]

Embodiments of the present invention will be described below. In this embodiment, a general terminal is connected to a wireless telephone via a data communication adapter to perform wireless data communication. Of course, the general terminal may be provided with a built-in function block of the data communication adapter, and the general terminal may be directly connected to the wireless telephone.

FIG. 1 shows the overall configuration of this embodiment. In this figure, 1 is a data communication adapter according to the control method of the present invention, 2 is a general terminal such as a personal computer, and 3 is a wireless communication device. is there. Data communication adapter 1
And the general terminal 2 are connected at a reference point R defined by a UNI (user network interface). As a physical interface, a serial communication interface such as a USB (Universal Serial Bus) can be considered.
Of course, other interfaces may be used. The data communication adapter 1 and the wireless communication device 3 are connected by an interface defined by the wireless communication device 3.

The data communication adapter 1 comprises a CPU (central processing unit) 4, a work memory 5, a terminal I / F unit 6, and a wireless communication device I / F unit 7. CPU4 is terminal I
/ F unit 6 and wireless communication device I / F unit 7 are controlled.

FIG. 2 shows a software module configuration of the data communication adapter 1. In this figure, 8 is a terminal data transmission / reception module, and 9 is a terminal data separation / multiplex module. The terminal data transmission / reception module 8 performs communication interface control with the general data terminal 2 and data transmission / reception processing between the general data terminal 2 and the terminal data separation / multiplexing module 9. The terminal data separation / multiplexing module 9 absorbs a communication protocol with the general data terminal 2 and separates / multiplexes control data and user data.

10 is a user data layer 2 module,
11 is a dial-up module. "Layer 2"
Means the data link layer. The user data layer 2 module 10 includes a plurality of types of layer 2 protocol modules relating to user data. The dial-up module 11 performs protocol conversion on the control signal and controls the wireless communication device. In addition, the dial-up module 11 responds to a control signal at the time of line connection / disconnection,
An appropriate protocol is selected from the user data layer 2 module 10 and switching is performed.

Reference numeral 12 denotes a radio data transmission / reception module. The wireless device data transmitting / receiving module 12 is a wireless communication device 3
And a data transmission / reception process between the user data layer 2 module 10 and the wireless communication device 3 for user data and between the dial-up module 11 and the wireless communication device 3 for control data.

FIG. 3 shows the relationship between the dial-up module 11 and the user data layer 2 module 10 of the data communication adapter 1 and the protocol stack of the wireless communication device 3 when the line is connected (at the time of calling). Reference numeral 15 denotes control data and user data received from the general data terminal 2 (the reference numeral 15 is also used when individually indicating the control data and user data. For convenience, a postfix may be added), and 16 denotes the data communication adapter 1. This is control data that is subjected to protocol conversion. Reference numeral 13 denotes a protocol stack related to control data of the wireless communication device 3. The dial-up module 11 transmits the protocol stack 1 of the wireless communication device 3 with respect to the control data 16 transmitted from the wireless communication device 3.
Communication with layer 3 of layer 3 is performed. That is, the protocol stack 13 of the wireless communication device 3 processes the control signal from the base station (not shown) into the layer 1, the layer 2, and the layer 3 and sends the control signal to the dial-up module 11.

Reference numeral 14 denotes a protocol stack (only layer 1) relating to user data of the wireless communication device 3. The dial-up module 11 stores the control data 1 when the line is connected.
5 or the switching of the layer 2 protocol of the user data layer 2 module 10 in accordance with the service designation of the control data 16. The user data layer 2 module 10 passes the user data 17 framed in the layer 2 frame format to the layer 1 of the protocol stack 14 of the wireless communication device 3. When the line is disconnected, the dial-up module 11 returns the user data layer 2 module 10 to the packet layer 2.

FIG. 4 shows the dial-up module 11 of the data communication adapter 1 when receiving an outgoing request from the general terminal 2.
2 and the setting of the layer 2 of the user data layer 2 module 10 are shown. The general terminal 2 that makes a call is, for example, A
A control signal 15 for a transmission request of a modem connection service by a T command is issued to the data communication adapter 1. The dial-up module 11, which has received the transmission request control signal 15, issues a data communication request (modem connection service), dial information, and a transmission request to the wireless communication device 3 (indicated by reference numeral 11a). At this timing, the dial-up module 11 wakes up the user data layer 2 module 10 to set the user data layer 2 (indicated by reference numeral 11b).

FIG. 5 shows the processing of the dial-up module 11 of the data communication adapter 1 and the layer 2 of the user data layer 2 module 10 when an incoming call is notified from the wireless communication device 3.
The setting of is shown. As an example, the wireless communication device 3 transmits the information transfer capability field ("101" in the figure) in the control signal 16 of the incoming call display.
11B "and B indicate binary), the data communication adapter 1 is notified that the incoming call is a modem connection service. The information transfer capability field will be described later. At this time, the dial-up module 1 that has received the control signal 16 of the incoming call display.
1 issues a data communication request (modem connection service) and a response request to the wireless communication device 3 (indicated by reference numeral 11c). At this timing, the dial-up module 11 wakes up the user data layer 2 module 10 (modem connection), thereby
Is set (indicated by reference numeral 11d).

FIG. 6 shows the format of an incoming message (call setup message). The incoming message includes a protocol identifier, message type, transmission capability, and called number information. The transmission capability fields include information element identifier, element length, information capability, information transfer speed, layer 1
Contains protocol data. When the data of the information transfer capability is “10111”, the modem connection service is indicated, and when the data is “01000”, the unrestricted digital bearer connection service is indicated. By using this, the dial-up module 11 converts the user data layer 2 module 10
Is set to a desired layer 2.

In FIG. 7, the default connection service is specified from the general terminal 2, and thereafter, the processing of the dial-up module 11 of the data communication adapter 1 and the user data layer 2 module when a call request without the connection service specification is received. 10 shows the settings of Layer 2 of FIG. The general terminal 2 that makes a call issues, for example, a control signal 15a for specifying a default connection service (modem connection service) to the data communication adapter 1 from an AT command, and furthermore, a control signal for a call request without specifying a connection service. 15b is issued to the data communication adapter 1. Upon receiving the control signal 15a specifying the default connection service, the dial-up module 11 stores the specified connection service in the internal memory as a default connection service (indicated by reference numeral 11e). Subsequently, upon receiving the control signal 15b of the transmission request without specifying the connection service, the dial-up module 11 issues a data communication request (modem connection service), dial information, and a transmission request to the wireless communication device 3 (reference numeral 11f). Shown). At this timing, the dial-up module 11 wakes up the user data layer 2 module 10 (modem connection service) to set the user data layer 2 (indicated by reference numeral 11g).

FIG. 8 shows processing of the dial-up module 11 of the data communication adapter 1 when receiving a disconnection request (user disconnection) from the general terminal 2. The general terminal 2 receives, for example, a control signal 1 of a line disconnection command by an AT command.
5 is issued to the data communication adapter 1. Upon receiving the control signal 15 of the line disconnection command, the dial-up module 11 issues a disconnection request to the wireless communication device 2 (indicated by reference numeral 11h). At this timing, the dial-up module 11 transmits the user data layer 2
The module 10 is stopped (indicated by reference numeral 11i).

FIG. 9 shows disconnection from the wireless communication device 3 (disconnection on the network side).
The processing of the dial-up module 11 of the data communication adapter 1 when receiving the notification is shown. Upon receiving the disconnection control signal 16 from the wireless communication device 3, the dial-up module 11 issues a network-side disconnection notification to the general terminal 2 (indicated by reference numeral 11 j) and issues a release request to the general terminal 3. Issue At this timing, the dial-up module 11 pauses the user data layer 2 module 10 (indicated by reference numeral 11k).

FIG. 10 shows a flow of setting the layer 2 of the user data layer 2 module 10 by the dial-up module 11 at the time of line connection. In FIG. 10, the data communication adapter 1 monitors a message from the general terminal 2 or the wireless communication device 3 and performs processing according to the message (S11, S12). When the data communication adapter 1 receives an outgoing call request from the user or an incoming call indication from the network (S13), the dial-up module 11 checks whether there is a connection service designation in the outgoing call request or incoming call display (S14). If so, set the service specification. If there is no service designation, the service is designated by referring to the default connection service designation (S1).
5). Subsequently, the dial-up module 11 wakes up the user data layer 2 module 10 according to the service designation to complete the layer 2 setting (S1).
6).

FIG. 11 shows the user data layer 2 module 1 of the dial-up module 11 when the line is disconnected.
0 shows a pause flow. In FIG. 11, the data communication adapter 1 monitors a message from the general terminal 2 or the wireless communication device 3 and performs a process according to the message (S21,
S22). When the data communication adapter 1 receives a disconnection request from the user or a disconnection indication from the network (S23),
The dial-up module 10 suspends the currently activated user data layer 2 module 10 (S24).

It should be noted that the present invention is not limited to the above-described embodiment, and various changes can be made without departing from the gist of the present invention. In the above embodiment, the dial-up module and the user data layer 2 module are incorporated in the data communication adapter, but may be incorporated in a general terminal or a wireless communication device (mobile station, fixed wireless access device). Further, a configuration may be adopted in which the function of the wireless communication device data communication adapter is incorporated in a general terminal.

[0037]

As described above, according to the present invention,
Regarding a wireless infrastructure (broadband CDMA, etc.) that can provide a plurality of data communication connection services, a plurality of different unlimited digital bearer communication services, modem communication services, etc. (communication services that require data link control of a radio interface). There is no need to prepare a plurality of data communication adapters in order to support this service. In the case of a wireless communication device with a built-in adapter function, a single device can provide a plurality of data communication interface functions.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention as a whole.

FIG. 2 is a block diagram illustrating a configuration of a software module according to the embodiment.

FIG. 3 is a diagram illustrating a data flow of the embodiment.

FIG. 4 is a diagram illustrating a process at the time of transmission.

FIG. 5 is a diagram illustrating a process at the time of an incoming call;

FIG. 6 is a diagram illustrating information on information transfer capability.

FIG. 7 is a diagram illustrating a process when a default connection service is received;

FIG. 8 is a diagram illustrating processing when a user disconnects a call.

FIG. 9 is a diagram illustrating processing when a call is disconnected from a network.

FIG. 10 is a flowchart illustrating an operation of the above embodiment when a line is connected.

FIG. 11 is a flowchart illustrating an operation at the time of line disconnection in the above embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Data communication adapter 2 General terminal 3 Wireless communication device 4 CPU 5 Work memory 6 Terminal I / F unit 7 Wireless communication device I / F unit 8 Terminal data transmission / reception module 9 Terminal data separation / multiplex module 10 User data layer 2 module 11 Dial Up module 12 Radio data transmission / reception module 13 Protocol stack for control data of radio communication device 3 Protocol stack for user data of radio communication device 15 Control data and user data received from general data terminal 2 16 Protocol in data communication adapter 1 Control data to be converted 17 User data framed in layer 2 frame format

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04Q 7/30

Claims (9)

[Claims] In a data communication method for performing data communication on a wireless communication infrastructure capable of providing a plurality of connection services, a step of acquiring line connection information, and determining a connection service based on the acquired line connection information. A step of selecting a data link layer processing module corresponding to the determined connection service; a step of receiving user data; and a step of receiving the user data using the selected data link layer processing module. Performing a conversion. 2. The data communication method according to claim 1, wherein the plurality of connection services include an unrestricted digital bearer connection, a packet connection, and a modem connection. 3. The data communication method according to claim 1, wherein the connection service is determined based on the connection service identifier included in the call signal. 4. The data communication method according to claim 1, wherein the connection service is determined based on the connection service identifier included in the incoming call signal. 5. A data communication apparatus for performing data communication on a wireless communication infrastructure capable of providing a plurality of connection services, means for acquiring line connection information, and determining the connection service based on the acquired line connection information. Means, a means for selecting a data link layer processing module corresponding to the determined connection service, a means for receiving user data, and a method for supporting the connection service for the user data using the selected data link layer processing module. And a means for performing conversion. 6. A data communication adapter connected between a mobile station performing mobile communication on a wireless communication infrastructure capable of providing a plurality of connection services and an information processing terminal, and acquires line connection information. Means, means for determining a connection service based on the obtained line connection information, means for selecting a data link layer processing module corresponding to the determined connection service, means for receiving user data, and selected data link layer processing Means for performing a conversion corresponding to the connection service on the user data using a module, the adapter for data communication. 7. The data communication adapter according to claim 7, wherein the data communication adapter body has a card shape, and is mounted in a card type slot of the information terminal. 8. An information processing terminal connected to a mobile station performing mobile communication on a wireless communication infrastructure capable of providing a plurality of connection services, a processing unit for processing user data, and acquiring line connection information. Means, means for determining a connection service based on the obtained line connection information, means for selecting a data link layer processing module corresponding to the determined connection service, means for receiving user data, and selected data link layer processing Means for performing a conversion corresponding to the connection service on the user data using a module. 9. A mobile station performing mobile communication on a wireless communication infrastructure capable of providing a plurality of connection services, means for acquiring line connection information, and determining the connection service based on the acquired line connection information. Means, a means for selecting a data link layer processing module corresponding to the determined connection service, a means for receiving user data, and a method for supporting the connection service for the user data using the selected data link layer processing module. Means for performing conversion.