KR19990086213A - Data communication method using mobile phone - Google Patents

Abstract

The present invention relates to a data communication method using a mobile telephone network.

This method of the present invention connects a terminal to a mobile phone asynchronously, and through the base station and base station controller, the mobile phone is connected to a wireless subscriber matching subsystem, the wireless subscriber matching subsystem having a time switch and an IWF on the time switch. Configuring a switching network to connect an IWF having a main control unit and a modem & protocol processing unit; Determining whether the call is a data call when a call request is received from the mobile telephone; If it is determined that the call is not a data call, processing a general mobile call, and if not, informing the IWF main control unit of the call processing block of the wireless subscriber registration subsystem; Requesting, by the IWF main control unit, a modem assignment to the modem & protocol processing unit; Establishing a call path between a calling terminal and a called terminal through a wireless channel and an assigned modem; And performing data communication between end terminals through the established call path.

Therefore, according to the present invention, it is not necessary to match the separate additional device for providing the asynchronous data service and the fax service to the mobile communication switch, so there is no need for an additional cost according to the matching.

Description

DATA COMMUNICATION METHOD USING A PERSONAL COMMUNICATION SYSTEM

The present invention relates to a data communication method using a mobile telephone network, and more particularly, to a method for transferring data between a digital terminal connected to a mobile telephone and a terminal connected to an analog subscriber line.

Recently, as mobile phones providing voice services on the move have become more common, a need for a mobile data service capable of transmitting and receiving data and sharing necessary information on the move, anytime and anywhere, has appeared.

The mobile data service is implemented by using a dedicated packet network that provides a wireless data environment by establishing a separate frequency band and communication network for data service, and by using a frequency and communication network of a mobile phone that provides a voice service. To provide voice and data services through a mobile phone network.

Dedicated packet networks that provide data communication only include the ARDIS system developed in 1983 by IBM and mobile phone network operators, and the Mobitex service started by RAM Mobile data.The mobile phone network using voice service uses analog frequency division method. There are digital mobile telephone networks using time-division multiple access, GSM, and code-division multiple access using AMPS networks and digital methods.

However, in the related art, in order to provide asynchronous data communication / fax service and packet data communication with a terminal of an existing network from a terminal connected in a mobile communication network, an additional device capable of processing a separate protocol conversion and transmission function in addition to the mobile communication switch (IWF) Is provided to the mobile switching center. For example, Figure 1 is a block diagram of a Global System for Mobile communication (GSM) network for data services, such as used in Europe. Referring to FIG. 1, a portable personal computer (PC: 11) and a mobile phone (MS: 12), such as a notebook computer, are connected by asynchronous (Async) data communication using the RS232C method, and the mobile phone 12 ) And a base station (BSS) are connected in a wireless synchronous manner, and a base station controller (MSC) 14 is connected to each base station 13. The base station controller 14 is connected to the public telephone network PSTN: 16 and to the interworking function device IWF15. The IWF 15 provides protocol conversion and modem functions to enable data communication between a personal computer connected asynchronously to a mobile telephone and a personal computer connected via a modem to a public telephone network when performing data communication via GSM.

An object of the present invention is to provide an interworking function device (IWF) that performs a protocol conversion function for data communication between a terminal connected to a digital mobile telephone network such as GSM and a terminal connected to another network. The present invention provides a data communication method using a mobile phone that facilitates data communication.

In order to achieve the above object, the method of the present invention comprises asynchronously connecting a terminal to a mobile telephone, and through the base station and the base station controller, the mobile telephone is connected to a wireless subscriber matching subsystem, and the wireless subscriber matching subsystem is a time switch. Configuring a switching network to connect an IWF having an IWF main control unit and a modem & protocol processing unit to the time switch; Determining whether the call is a data call when a call request is received from the mobile telephone; If it is determined that the call is not a data call, processing a general mobile call, and if not, informing the IWF main control unit of the call processing block of the wireless subscriber registration subsystem; Requesting, by the IWF main control unit, a modem assignment to the modem & protocol processing unit; Establishing a call path between a calling terminal and a called terminal through a wireless channel and an assigned modem; And performing data communication between end terminals through the established call path.

1 is a configuration diagram of a general GSM network for a data service;

2 is a configuration example of a switching network to which the present invention is applied;

3 is an example of a data communication path formed in accordance with the present invention;

4 is a flowchart illustrating a data communication method between a digital terminal connected to a mobile telephone and a terminal connected to an analog subscriber line according to the present invention.

* Explanation of symbols for main parts of the drawings

201,206: PC 202: mobile phone

203: base station 204: base station controller

205: telephone 207: modem

210: switch 211: wireless subscriber registration subsystem (ASS-W)

212: Analog Subscriber Subsystem (ASS-S)

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram showing the configuration of a switching network to which the present invention is applied. Referring to FIG. 2, the switch 210 to which the present invention is applied is a wireless subscriber matching subsystem (ASS-W: 211) and an analog subscriber matching subsystem (ASS-S: 212). ), No.7 network (ASS-7: 214), trunk matching subsystem (ASS-T: 215), etc. are connected, and other switch 220 or air via trunk matching subsystem (ASS-T: 215). A telephone network (PSTN) 230, an ISDN network 240, or the like may be connected. In addition, a central control system (CCS: 216) is connected to the Internet subsystem (INS: 213), and is in charge of operation and maintenance of the exchange. The base station controller (204) is connected to the wireless subscriber registration subsystem (ASS-W: 211). Are connected, and the base station controller 204 controls a plurality of base stations 203 and communication is performed between the base station 203 and the mobile telephone 202 via a radio link. At this time, the mobile telephone 202, the base station 203, the base station controller 204 and the like constitute a personal communication network, and the analog subscriber matching subsystem (ASS-S: 212) through the telephone 205 and the modem 207. A personal computer 206 is connected, and an ISDN personal computer 208 is connected to the ISDN network 240.

In this configuration, in order to connect a portable personal computer 201 such as a notebook computer with another computer through the mobile phone 202, the personal computer 201 is connected to the mobile phone 202 in an asynchronous manner (for example, RS-232C or Via RS-422). After connecting the personal computer 201 to the mobile phone 202 as described above, a personal computer 206 connected to the analog subscriber registration subsystem (ASS-S: 212) or a personal computer 208 connected to the ISDN network through a data call. Etc.). Here, the interface between the mobile phone 202 and the personal computer 201 is asynchronous digital, and the personal computer 206 connected to the analog subscriber registration subsystem 212 or the public telephone network 230 is a modem 207. It is necessary to note that the ISDN computer 208 is digitally connected to the ISDN network 240.

Since the mobile phone 202 and the personal computer 201 are connected in an asynchronous manner, the mobile phone 202 and the personal computer 201 are communicated with the personal computer 206 connected to the analog subscriber registration subsystem (ASS-S: 212) through the modem 207. To this end, an IWF (303 in FIG. 3) for performing protocol conversion and modem functions is required for the wireless subscriber registration subsystem 211. FIG.

3 is an example of a data communication path formed in accordance with the present invention. Referring to FIG. 3, the wireless subscriber registration subsystem 211 includes a personal communication subscriber matching unit (PCI) 301, a time switch (TSL: 302), an IWF 303, a processor unit (ASP: 304), and the like. The analog subscriber matching subsystem 212 includes a time switch 306, an analog subscriber matching unit (ASI: 308), a digital condenser unit (DLC: 307), a processor unit (ASP: 309), and the like. Here, although not shown in the figure, the IWF 303 includes an IWF main control unit, a modem and protocol processing unit, and a subhighway (SHW) matching unit. The IWF main control unit allocates / releases a corresponding modem when a data call is requested from a mobile subscriber. It performs the function. The modem and protocol processing unit adjusts the transmission speed and processes protocols (PPP, IP, TCP, AI) with the destination modem. The modem is allocated and released by receiving the modem allocation / release control information from the IWF main controller. The SHW matching unit delivers the bearer through matching between the modem and protocol processing unit in the IWF block and the TSL block.

In FIG. 3, the data of the personal computer 201 is transferred to the personal communication subscriber matching unit (PCI) 301 and the time switch for data communication from the computer 201 connected to the mobile telephone (202 of FIG. 2) to the personal computer 206. 302 is inputted to the IWF 303, protocol-converted at the IWF, and also converted to the PCM data in the assigned modem, and again through the INS 213 via the time switch 302, the subscriber registration subsystem 212 It is delivered to the time switch 306 of. The data transmitted to the time switch 306 is transferred to the personal computer 206 through the digital collecting unit (DLC) 307, the analog subscriber matching unit (ASI) 308, and the modem 207 through the set path. The data path from personal computer 206 to personal computer 201 is passed through the reverse flow.

4 is a flowchart illustrating a data communication method between a digital terminal connected to a mobile telephone and a terminal connected to an analog subscriber line according to the present invention. Referring to FIG. 4, when an outgoing call request is received from the mobile telephone 202 to the exchange through the base station 203 and the base station controller 204 in step S1, it is determined in step S2 whether it is a data call. If it is determined that the call is not a data call, the general mobile call is processed in step S7.

In step S3, the call processing block of the wireless subscriber registration subsystem is notified of the data call setting to the IWF main control unit. In step S4, the IWF main control unit requests the modem and the protocol processing unit to allocate the modem. In step S5, a call path is established between the calling terminal and the called terminal through the radio channel and the assigned modem, and in step S6, data communication is performed between the end terminals through the set call path.

As described above, according to the present invention, since there is no need to match separate additional devices for providing asynchronous data service and fax service to the mobile communication switch, no additional cost is required for matching, and the mobile communication switch is changed for matching. It is possible to provide a data communication service using a mobile phone without the need.

Claims (1)

The terminal is asynchronously connected to the mobile telephone, and the mobile telephone is connected to the wireless subscriber matching subsystem through a base station and a base station controller. The wireless subscriber matching subsystem has a time switch, and the IWF main control unit and the modem & protocol are connected to the time switch. Configuring a switching network to connect an IWF having a processing unit; Determining whether the call is a data call when a call request is received from the mobile telephone; If it is determined that the call is not a data call, processing a general mobile call, and if not, informing the IWF main control unit of the call processing block of the wireless subscriber registration subsystem; Requesting, by the IWF main control unit, a modem assignment to the modem & protocol processing unit; Establishing a call path between a calling terminal and a called terminal through a wireless channel and an assigned modem; And A data communication method using a mobile telephone comprising the step of performing data communication between end terminals through a set communication path.