JPH1065607A - Mobile data communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a connection to various kinds of networks without through a public network by directly executing connection from exchange additional devices to various kinds of networks by way of a network connecting devices. SOLUTION: A mobile communication switchboard 2 starts a proper exchange additional devices 1 by a direct network 7 connecting request from a mobile station 21 and connects it to the networks 12 which are connected to the exchange additional devices 1. Thus, connection is executed from the mobile station 21 to the various kinds of networks 12 without the public networks. The interfaces of the network connecting devices 11 are provided so that connection is executed to the various kinds of networks 12 without using a DCE(data communication equipment) part. Besides, it is favorable that a means for reporting the name of the network connected to the exchange additional device 1 is provided. It is also favorable that the means for receiving the name of the network connected to a connection adapter 23 is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile data communication system, and more particularly, to a mobile data communication system capable of directly connecting a mobile communication network to various networks.

[0002]

2. Description of the Related Art In this type of conventional mobile data communication system, a connection from a mobile communication network to a public network can be made by, for example, a publication (Radio System Development Center, "Digital Automobile Telephone System Standard ( RCR ST
D-27D) ", issued on June 27, 1995, Appendix 2-6
As shown in FIG. 1.2 system configuration, Appendix 3-18, and FIG. 2.1 function configuration), DCE (Dat
aCommunication Equipment (data communication device) was required to be provided.

[0003]

The above-mentioned conventional method has the following problems.

(1) The first problem is that the mobile communication network
That is, when connecting to various networks, it is necessary to go through a public network. This is because the various networks are connected to the public network.

(2) The second problem is that when a mobile communication network is connected to various networks via a public network,
DCE (Data Communication Equivalent)
pment) part is required. This is because various networks use DCE on the public network side.

[0006] The use of the DCE unit increases the time required for line connection. In particular, PSTN (Public S
In a witched Telecommunication Network (analog public network), quality degradation, delay time, and the like occur due to analog / digital conversion in the DCE unit.

Therefore, the present invention has been made in view of the above circumstances, and has as its object to enable data communication without passing through a public network when connecting from a mobile communication network to various networks. It is to provide a mobile communication system.

Another object of the present invention is to provide a DCE (Data Communica) for connecting a mobile communication network to various networks.
It is an object of the present invention to provide a mobile communication system capable of performing data communication without using an Option Equipment unit.

[0009]

To achieve the above object, a mobile communication system according to the present invention comprises a mobile station for controlling a radio channel, a data terminal for performing data communication, the mobile station and the data terminal. And a connection adapter for connecting the mobile station, a mobile station capable of data communication, a mobile communication switching center accommodating the mobile station via a wireless line, and a mobile communication switching station connected to the mobile communication switching station, A mobile communication network including an additional switch device for controlling data communication in accordance with a predetermined procedure in response to a data communication processing request, so that the mobile communication network can directly connect to various networks without connecting to a public network. It is characterized by.

In the present invention, the mobile communication switching center activates an appropriate switching equipment in response to a network direct connection request from the mobile station capable of data communication.

[0011] In the present invention, the switching equipment controls data communication with the mobile station based on a predetermined transmission control procedure in response to activation of the mobile communication switching center, and connects to various networks. An interface of a network connection device for connection is provided.

[0012]

Embodiments of the present invention will be described below. The present invention, in its preferred embodiment, when connecting to various networks from a mobile communication network,
Enables data communication without going through a public network.
More specifically, means (2 in FIG. 1) for activating the switching equipment in response to a predetermined network direct connection request.
And means (1 in FIG. 1) for directly connecting to the network connection device (11 in FIG. 1).

Further, in the embodiment of the present invention, when connecting from a mobile communication network to various networks, DCE
Another feature is that data communication is possible without using a (Data Communication Equipment) unit.
Specifically, it includes means (43 in FIG. 2) for directly connecting to the network connection device.

As described above, in the embodiment of the present invention, the mobile communication switching center (2 in FIG. 1) responds to the network direct connection request from the mobile station (21 in FIG. 1) by using the appropriate switching equipment (FIG. 1). 1) is started, and connected to the network (12 in FIG. 1) via the network connection device (11 in FIG. 1) connected to the exchange additional device. It can be connected to various networks without going through the public network.

Further, by having an interface of a network connection device, it is possible to connect to various networks without using a DCE unit.

Further, in the embodiment of the present invention,
The switching device (1 in FIG. 1) may include means for notifying the mobile station (21 in FIG. 1) of the connected network name. Also, a connection adapter (23 in FIG. 1)
However, a means for receiving the name of the connected network may be provided.

[0017]

FIG. 1 is a block diagram showing a system configuration of a first embodiment of the present invention. Referring to FIG. 1, in this embodiment, a mobile station 21 includes a mobile station 24 for controlling a radio channel for mobile communication, a data terminal 22 for performing data communication with each other via a mobile communication network, and a mobile station 24. And a connection adapter 23 that connects the data terminal 22 and the data terminal 22 and controls data communication via a mobile communication network.

The mobile communication radio network controller 3 controls a plurality of radio base stations 4 for controlling a radio channel for mobile communication, and the mobile communication exchange 2 has a mobile communication radio network controller 3 and a radio base station. The mobile station 21 is accommodated via the station 4, and mobile communication calls relating to the mobile station 21 are exchanged and connected.

A plurality of switching equipment 1 are connected to the mobile communication switching center 2, and an appropriate device is activated by a request for a direct network connection from the mobile station 21 to the mobile communication switching center 2. The activated device controls data communication based on a predetermined transmission control procedure and connects the network connection device 11 for connection to the network 12.

The radio line 31 is connected to the radio base station 4 and the mobile station 2
4 is connected.

FIG. 2 is a block diagram showing an example of the configuration of the switching equipment 1 according to the first embodiment of the present invention.
2, the same elements as those shown in FIG. 1 are denoted by the same reference numerals.

The switching equipment 1 is provided with a radio section error control unit 41, a data compression / decompression unit 42, and a network connection device interface unit 43.

The wireless section error control unit 41 establishes an error control protocol with the connection adapter 23 and recovers data errors. The data compression / decompression unit 42 transmits and receives data to and from the wireless section error control unit 41 and
Compression / expansion is performed using the same protocol. The network connection device interface unit 43 includes a data compression / decompression unit 4.
2 and the network connection device 1
1 with a data transmission / reception interface.

Next, the operation of this embodiment will be described with reference to FIG.

The mobile station 21 activates the mobile communication network according to a predetermined procedure in order to directly connect to various networks. For example, a dedicated telephone number is set, and an operation of making a call from the mobile station 21 to this telephone number is performed.

In response to a predetermined network direct connection request from the mobile station 21, the mobile communication switching center 2 activates an appropriate one of the plurality of switching equipment 1 installed to connect to various networks, and Additional device 1
And the mobile station 21 are connected.

When the mobile communication switching center 2 is activated, the switching equipment 1 controls data communication with the connection adapter 23 based on a predetermined transmission control procedure, and establishes physical connection and protocol establishment with the network connection device 11. I do.

The network connection device 11 connects to the network 12 according to the procedure, and the mobile station 21 and the network 12 are connected.

Referring to FIG. 2, the switching equipment 1
The connection protocol with the connection adapter 23 includes a wireless section error control unit 41 and a data compression / decompression unit 42, and the same protocol as that of the connection adapter 23 can be arbitrarily set. For example, ARQ (Automatic Retransmission Request; Automatic Repeat Response) is sent to the radio section error control unit 41 set in RCR STD-27D.
at reQuest), the data compression / decompression unit 42 42bi
Setting such as s can be made according to the interface of the connection adapter 23.

The switching apparatus 1 is connected to the network connection device 11 by the network connection device interface 43. The network connection device interface unit 43 can set an arbitrary interface, for example, RS-232C or X.264. Settings such as 25 can be made according to the interface of the network connection device 11.

Next, the operation and effect of the first embodiment of the present invention will be described. In the first embodiment of the present invention, since the switching equipment 1 is connected to various networks via the network connection device 1, it is possible to connect to various networks without passing through the public network.

Further, since it is possible to connect to various networks without passing through a public network, it is possible to connect to various networks without using a DCE, and analog / digital It has the operational effects of avoiding the deterioration of quality and the occurrence of delay time due to digital conversion.

Next, a second embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. FIG. 3 shows the connection adapter 23 of FIG.
FIG. 3 is a sequence diagram up to the connection between the data terminal 22 and the network connection device 11 when a device conforming to RCR STD-27D is used.

In response to a network direct connection request from the data terminal 22, the connection adapter 23 sends the call connection request and data communication function selection information to the mobile station 24, and the mobile station 24
The mobile communication switching center 2 is activated by ETUP.

The mobile communication switching center 2 activates the switching equipment 1 and sends out an INFO to the mobile equipment 24 to start an ARQ initial operation between the connection adapter 23 and the switching equipment 1.

After the ARQ synchronization is established, the setting of the switching equipment 1 is performed by the command XID (basic / calling).
The parameters for the CE setting are ignored, only the necessary parameters are set, and if the setting is possible, the response XID (basic / setting is possible) is set. If any of the necessary parameters cannot be set, the response XID ( The connection adapter 23 is notified of “basic / setting impossible”.

Next, depending on the setting, the DCE is set by the instruction XID (extension). However, in the switching equipment 1, there is no need to set the DCE. Response XID (expansion / setting completed) without setting only the commands affecting 11 and setting all other commands
Notify.

After notifying the connection adapter 23 of the response XID (expansion / setting completed), the switching equipment 1 performs physical connection and protocol establishment with the network connection device 11, and after the connection is completed, the connection adapter 23 receives the response XID (notification). 23
Notify connection to. The connection adapter 23 is a data terminal 2
2. Call connection indication

Data terminal 22 and network connection device 1
After the connection with the data terminal 2, the data terminal 2
2 is connected to various networks.

The second embodiment of the present invention has an operational effect that, when the first embodiment is used, a connection adapter conforming to RCR STD-27D can be used.

Next, a third embodiment of the present invention will be described.

In the third embodiment of the present invention, the switching equipment 1 and the network connection equipment 11 shown in FIG.
To the response XID (notification), which is the connection notification of the above, is added information indicating which network has been connected. For example, response X
The name of the connected network is assigned to the octet (Octet) in which all IDs (notifications) are “1” by ASCII (A).
scii) Code and transmit. If the connection adapter 23 can receive this ASCII code, it is possible to display the name of the network connected to the data terminal 22 and the mobile device 24.

According to the third embodiment of the present invention, in addition to the first and second embodiments, the name of the connected network can be displayed on the data terminal or the mobile device.

[0044]

As described above, according to the present invention,
The following effects are obtained.

(1) A first effect of the present invention is that it is possible to connect to various networks without passing through a public network.

The reason for this is that, in the present invention, it is possible to directly connect to various networks via the network connection device from the switching device.

(2) A second effect of the present invention is that it is possible to connect to various networks without using DCE. For this reason, the time required for line connection is shorter than when DCE is used, and quality degradation and delay time due to analog / digital exchange do not occur.

The reason for this is that, in the present invention, the same interface as that of the network connection device is provided in the switching equipment.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a first exemplary embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a switching equipment in the first embodiment of the present invention.

FIG. 3 shows an RCR STD connected to the connection adapter shown in FIG.
FIG. 8 is a diagram showing a sequence up to connection between a data terminal and a network connection device when a device conforming to -27D is used.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 switch additional device 2 mobile communication switching station 3 mobile communication radio network controller 4 radio base station 11 network connection device 12 network 21 mobile station 22 data terminal 23 connection adapter 24 mobile device 41 wireless section error control unit 42 data compression / decompression unit 43 Network Interface Unit Interface

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification number Reference number in the agency FI Technical display location H04Q 7/24 7/26 7/30

Claims (7)

[Claims] 1. A means for activating a corresponding switching equipment in response to a network direct connection request from a mobile station, and connecting the mobile station to a network connection device via the activated switching equipment. Characteristic mobile data communication system. 2. A mobile station for controlling a radio line, a data terminal for performing data communication, a connection adapter for connecting the mobile station and the data terminal,
A mobile station capable of performing data communication, a mobile communication switching center accommodating the mobile station via a wireless line, and a mobile communication switching station connected to the mobile communication switching station and configured to respond to a data communication processing request from the mobile station. A mobile communication network provided with an exchange additional device for controlling data communication in accordance with the procedure described above, wherein the mobile communication network can be directly connected to various networks without connecting to a public network. system. 3. The mobile communication system according to claim 2, wherein said mobile communication switching center activates an appropriate switching equipment in response to a network direct connection request from said mobile station capable of data communication. 4. The switching apparatus according to claim 1, wherein the switching apparatus controls data communication with the mobile station based on a predetermined transmission control procedure in response to activation of the mobile communication switching station, and connects to various networks. The mobile communication system according to claim 2, further comprising an interface of the network connection device. 5. The switching equipment according to claim 1, wherein said switching equipment is an RCR STD-
The mobile communication system according to claim 2, wherein the mobile communication system can be connected to a connection adapter conforming to 27D. 6. The mobile communication system according to claim 2, wherein said switching equipment is provided with means for notifying said mobile station of a connected network name. 7. The connection adapter according to claim 2, further comprising means for receiving a name of a connected network.
A mobile communication system according to claim 1.