KR20040095836A - Mobile Network System Interworking with PABX and Interworking Method - Google Patents

Abstract

PURPOSE: A mobile communication system connectable with a private MSC is provided to connect a call generated for a subscriber identification number with a private MSC which performs a specific extension network switching function, thereby directly connecting the call with an extension terminal connected to a specific private network by using an available subscriber number. CONSTITUTION: BTSs(111,112) perform wireless communication with mobile stations(10,20). BSCs(121,122) control the BTSs(111,112). MSCs(131,132) carry out call switching functions in connection with the BSCs(121,122). An HLR(140) manages subscriber position information. A PDSN(150) for servicing packet data is connected to the BSCs(121,122) while a number translator(160) is connected to the PDSN(150). A fixed wireless station(170) performs wireless communication with the BTS(112).

Description

Mobile communication system connectable to private switching network and connection method {Mobile Network System Interworking with PABX and Interworking Method}

The present invention relates to a mobile communication system connectable with a private switching network and a connection method thereof.

Companies or public offices use a plurality of extensions and call exchanges using a separate private network switch for the extensions. Therefore, the outside could dial the representative number of the private network switch through a wired terminal to connect to the private network switch and enter a desired extension number to make a call to the extension.

On the other hand, if you want to make a call to an extension using a mobile terminal from the outside, that is, if you want to connect a call from the mobile terminal to a private network, connect to the private network via a separate wired network called a trunk line through the mobile communication network. It was possible.

As described above, conventionally, a call cannot be directly connected to a private network from a mobile terminal of a mobile communication network. Therefore, in the related art, in order to access a private network from a mobile terminal, the connection time is not only relatively long, but also has a disadvantage in that call quality is degraded.

In addition, in the event of a failure in the wired network managing the trunk line, a problem arises in that the mobile terminal cannot access the private network.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a mobile communication system and a connection method which can be connected to a private switching network capable of performing a direct call exchange from a mobile communication network to a private switching network.

1 is a block diagram illustrating a connection between a private switching network and a mobile communication system according to the present invention;

2 is a block diagram illustrating a configuration of a base station of a mobile communication network according to the present invention;

3 is a block diagram for explaining the configuration of the number translation unit according to the present invention;

4 is a block diagram for explaining the configuration of a fixed radio station according to the present invention;

5 is a block diagram for explaining the configuration of a private network exchange according to the present invention;

6 is a flowchart for explaining an embodiment of a call connection method between a private switching network and a mobile communication system according to the present invention;

7 is a flowchart illustrating another embodiment of a call connection method between a private switching network and a mobile communication system according to the present invention.

<Description of Symbols for Main Parts of Drawings>

111,112: base station 121,122: base international flag

131, 132: exchange 140: home position register

160: number translation unit 170: fixed wireless stations

210: extension network 220: private network exchange

A mobile communication system connectable to a private switching network according to the present invention for achieving the above object includes a base station performing wireless communication with a mobile terminal, a base station controller for controlling the base station, and a base station controller connected to the base station controller to exchange a call. And a unique subscriber identification number to perform wireless communication with the base station of the mobile communication network, including an exchange for performing a wireless communication and a home location register for managing the location information of the subscriber, and for the subscriber identification number from the mobile communication network. And a fixed radio station for connecting the call to a private network switch that performs a specific extension network exchange when a call is generated.

In addition, in the connection method between the private switching network and the mobile communication system according to the present invention, when a call is sent from the mobile terminal to the called party calling the extension terminal connected to the extension network, the calling party sends a location information request message requesting a route to the called number. Transmitting from the exchange to the home location register, transmitting a message requesting the number translation of the called number from the home location register according to the location information request message to the number translation unit, and translating the number according to the response message from the number translation unit. And additionally translating the called number into the identification number of the fixed wireless station and the extension number corresponding to the extension terminal and transmitting the information to the home location register. The home location register acquires route information corresponding to the identification number of the fixed wireless station. Sending a response message including the identification number and the extension number of the fixed wireless station to the calling exchange. Step, establishing a call from the originating exchange to the fixed wireless station through the destination exchange corresponding to the route information according to the response message; setting up a call from the fixed wireless station to the private network exchange according to the call setting and providing information including the extension number. And transmitting, by the private network exchange, setting an extension terminal and a call corresponding to the extension number connected to the extension network and establishing a call path between the mobile terminal and the extension terminal according to the extension number.

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

1 is a block diagram illustrating a connection between a private switching network and a mobile communication system according to the present invention.

1, a mobile communication system connectable to a private switching network according to the present invention includes a base station (hereinafter referred to as 'BTS') 111 and 112 for performing wireless communication with mobile terminals 10 and 20, and A base station controller (hereinafter referred to as 'BSC') 121 and 122 for controlling BTS, an exchange (hereinafter referred to as 'MSC') 131 and 132 connected to the BSC to perform call exchange, and subscriber location information It includes a home location register (hereinafter referred to as 'HLR') 150 for managing.

In addition, a packet data service node 150 (hereinafter referred to as PDSN) 150 serving packet data is connected to the BSC, and a number translation unit 160 is connected to the PDSN 150.

The mobile communication system also includes the fixed radio station 170 that performs wireless communication with the BTS 112.

Meanwhile, the private switching network 200 includes a private network switch 220 connected to the fixed wireless station 170 and the public wired network 300 to perform an exchange with the extension network 210. This allows the call from the mobile communication system to be forwarded to the private network.

The base station and the fixed wireless station can be connected by a separate dedicated wired cable in addition to the connection by wireless communication.

In the present embodiment described below, the BTS 111, BSC 121, and MSC 131 are set as the calling party, and the BTS 112, BSC 122, and the MSC 132 are the private switching network 200. It is set up as a called party for a call connection with a user.

2 is a block diagram illustrating a configuration of a base station (BTS) according to the present invention.

Referring to FIG. 2, the BTS 112 according to the present invention includes a control unit 112c for operation control, a storage unit 112d for storing / managing information necessary for the operation of the BTS 112, and the control unit. A wireless transceiver unit 112b for performing wireless communication through an antenna under control of 112c, a network connection unit 112a for transmitting and receiving information to and from a mobile communication network connected to a base station controller BSC 122, and a fixed wireless station. And a wired connection portion 112e for wired connection with 170.

3 is a block diagram illustrating a configuration of a number translation unit of a mobile communication network according to the present invention.

3, the number translation unit 160 according to the present invention is connected to the control unit 161 and the PDSN 150 for the operation control to transmit and receive information with the mobile communication network under the control of the control unit 161. Network connection unit 162, and a number translation database 163 for storing / managing information for number translation. The number translation database 163 stores / manages preset representative number information and extension number information for each identification number.

The representative number is a subscriber identification number that can be used in a mobile communication network assigned to the fixed wireless station 170 and is a number for accessing the private network switch 220.

4 is a block diagram for explaining the configuration of a fixed radio station according to the present invention.

Referring to FIG. 4, the fixed wireless station 170 includes a control unit 174 for operation control of the fixed wireless station 170, and a storage unit for storing / managing information necessary for the operation of the fixed wireless station 170. 173, a wireless transmitter / receiver 171 for performing wireless transmission and reception with the BTS 112, and a wired connection 112e of the BTS 112 through an antenna to transmit and receive information with the BTS 112. And a private network connection unit 175 connected to a fixed wireless station connection unit 221 of the private network exchanger 220 to be described later.

The fixed wireless station 170 having the above-described configuration is a wireless station having an independent identification number like the mobile terminals 10 and 20. When the call for the identification number is generated from the mobile communication system, the wireless transmission / reception unit 171 Alternatively, the call is received through the wired transmitter / receiver 172 and a call path is established to connect the call to the private network switch 220 through the private network connection 175.

5 is a block diagram for explaining the configuration of a private network switch connected to a fixed wireless station according to the present invention.

Referring to FIG. 5, a private network switch connected to a mobile communication system according to the present invention includes a private network connection unit 175 of a fixed wireless station 170 performing wired or wireless communication with the BTS 112 of the mobile communication system described above. The fixed wireless station connection unit 221 to be connected, the trunk line connection unit 222 connected to the public wired network 300, and the wireless station connection unit 221 and the trunk line connection unit 222 are connected to the fixed wireless station 170 and the wired network 300 An extension exchange unit 223 for performing an exchange from the call to the extension network 210.

Hereinafter, the operation of a mobile communication system connectable with a private switching network according to the present invention will be described in detail.

6 is a flowchart illustrating an embodiment of a call connection method between a private switching network and a mobile communication system according to the present invention.

FIG. 6 relates to a call connection method between a private switching network and a mobile communication network using a representative number. Referring to FIG. 6, when the above representative number is used as a called number from the mobile terminal 10, the call is sent (S10). The receiving MSC 131 receives the request for location information on the representative number to the HLR 140 (S21).

In response to the location information request, the HLR 140 inquires the information on the representative number and transmits a path request message to the destination MSC 132 (S22). The called MSC 132 transmits a route request response message including route information to the HLR 140 according to the route information request (S23).

The HLR 140 receives the path request response message transmitted from the destination MSC 132 and transmits a location information request response message including the path information to the source MSC 131 (S24).

In this embodiment, the HLR 140 requests the route information to the destination MSC 132, but since the representative number does not change the route, the HLR 140 sends the location information including the preset route information to the originating MSC ( 131).

In step S24, the originating MSC 131 that receives the location information request response message performs call setup to the destination MSC 132 according to the path included in the location information response request message. Accordingly, the destination MSC 132 performs call setup to the corresponding destination BTS 112 (S30).

The destination BTS 112 performs paging to the fixed wireless station 170 (S40), and the fixed wireless station 170 to the radio station connecting unit 221 of the private network switch 220 through the private network connecting unit 175 according to the paging. Connect and perform call setup with the extension switch 223 (S50). Accordingly, the call between the mobile terminal 10 and the private network switch 220 is established.

The private network switch 220 sends a guide message to input the extension number to be connected according to the call setup from the fixed wireless station 170 to the mobile terminal 10, and collects the input number (S60). The private network switch 220 performs call setup with the extension terminal 230 corresponding to the collected extension number (71).

When the extension terminal 230 answers (S72), a communication path between the mobile terminal 10 and the extension terminal 230 is opened (S80).

7 is a flowchart illustrating another embodiment of a call connection method between a private switching network and a mobile communication system according to the present invention.

FIG. 7 relates to a call connection method of a private switching network and a mobile communication network by assigning a separate identification number to an extension number of a private network and directly using the identification number.

Referring to FIG. 7, when an outgoing call (S10) is made using the identification number assigned to the extension number of the private network as the called party number from the mobile terminal 10, the calling party MSC 131 receiving the outgoing call is sent to the HLR 140. The location information request message for the identification number is transmitted (S21).

The HLR 140 receives the location information request message and queries private network subscriber information for the identification number (S131). According to the result of step S131, the HLR 140 requests a number translation to the number translation unit 160 (S132).

The number translation unit 160 receives the number translation request message in step S132 through the network connection unit 162, and inquires the information on the identification number from the number translation database 163 (S133). The number translation unit 160 includes the inquiring result in the response message and transmits the result to the HLR 140 (S134).

In this case, the number translation unit 160 transmits the representative number information of the corresponding private network to which the identification number belongs and the extension number information to the HLR 140 as a result of the inquiry about the identification number.

The HLR 140 receives the response message from the number translation unit 160 and transmits a path request message for the representative number included in the response message to the called MSC 132 (S135). The called MSC 132 transmits a route request response message including route information to the HLR 140 according to the route information request (S136).

The HLR 140 receives the path request response message transmitted from the destination MSC 132 and sends a location information request response message including the path information and the representative number information and the extension number information received in step S134. Transmission to the MSC 131 (S140).

In the present embodiment, the HLR 140 requests the route to the destination MSC 132, but since the representative number does not change the route, the HLR 140 transmits the location information including the preset route information to the MSC 131. ) Can be provided.

The originating MSC 131 that receives the location information request response message in step S140 performs call setup to the called party MSC 132 according to the path information of the representative number included in the location information response request message. Send the extension number information. Accordingly, the called party MSC 132 performs call setup to the corresponding called party BTS 112 and transmits the representative number information and the extension number information (S150).

The destination BTS 112 performs paging while transmitting the representative number information and the extension number information to the fixed wireless station 170 (S160). Accordingly, the fixed wireless station 170 connects to the wireless station access unit 221 of the private network exchange 220 through the private network connection unit 175 and transmits the extension number information to the extension exchange unit 223 to perform call setup (S170). ).

Accordingly, the call between the mobile terminal 10 and the private network switch 220 is established.

When the call setup with the fixed wireless station 170 is completed, the private network switch 220 performs call setup with the extension terminal 230 corresponding to the extension number information transmitted when the call setup is established (181).

When the extension terminal 230 answers (S182), a communication path between the mobile terminal 10 and the extension terminal 230 is opened (S190).

As described in detail above, according to the mobile communication system and a connection method thereof, which can be connected to a private switching network according to the present invention, a call is directly transmitted from a mobile terminal to an extension terminal connected to a specific private network using a subscriber number that can be used in the mobile communication network. There is an effect that can be connected.

Claims (11)

A mobile station including a base station performing wireless communication with a mobile terminal, a base station controller for controlling the base station, a switch connected to the base station controller to perform a call exchange, and a home location register for managing subscriber location information And a fixed wireless station having a unique subscriber identification number for performing wireless communication with the base station of the communication network and connecting the call to a private network switch that performs a specific extension network exchange when a call for the subscriber identification number is generated from the mobile communication network. A mobile communication system connectable with a private switching network, characterized in that. The method of claim 1, The fixed radio station is, A control unit for operation control, a storage unit for storing and managing information necessary for the operation of the fixed wireless station, a wireless transmission and reception unit for performing radio transmission and reception with the base station through an antenna, and a private network connection unit connected to the private network switch. A mobile communication system connectable with a private switching network comprising: a. The method of claim 2, The fixed wireless station is connected to the base station and the mobile communication system connectable to a private switching network further comprises a wired transceiver for transmitting and receiving information. The method of claim 1, And the subscriber identification number is a representative number assigned to the specific extension network. The method of claim 1, The private network switch includes a radio station connection part connected to the fixed wireless station, a trunk line connection part connected to a general wired network, and an extension exchange part for exchanging calls through the radio station connection part and a trunk line connection part to an extension terminal connected to the extension network. A mobile communication system connectable with a private switching network, characterized in that. The method of claim 1, Each station connected to the specific extension network is assigned an extension subscriber identification number that can be used in a mobile communication network. The mobile communication system further includes a number translation unit for translating the extension subscriber identification number into the subscriber identification number of the fixed wireless station and the extension number of the extension terminal. The method of claim 6, The home location register requests translation of the called number according to the call occurrence to the number translation unit, and transmits the subscriber identification number of the fixed wireless station, the extension number of the extension terminal and the route information of the fixed wireless station according to the translation result. A mobile communication system connectable to a private switching network characterized in that the call is transmitted by transmitting to a side exchange. A mobile station including a base station performing wireless communication with a mobile terminal, a base station controller for controlling the base station, a switch connected to the base station controller to perform a call exchange, and a home location register for managing subscriber location information A call communication method of a mobile communication system and a private switching network including a fixed wireless station performing wireless communication with the base station of a communication network and connecting a call to a private network exchange performing a specific extension network exchange, Transmitting a location information request message requesting a route for a called number of the call from a calling party to a home location register when a call is sent from the mobile terminal to a predetermined called number for accessing the extension network; Transmitting a response message from the home location register to the originating exchange in response to the location information request message; Setting up a call from the originating exchange to the destination exchange corresponding to the path according to the response message; Establishing a call with a private network switch from the called exchange through a corresponding base station and a fixed wireless station; Sending a guide message requesting an extension number from the private network switch to the mobile terminal and collecting the extension number; And collecting the extension terminal and the call corresponding to the extension number connected to the extension network by the private network exchange after the continuous extension number is collected, thereby establishing a communication path between the mobile terminal and the extension terminal. Method of call connection between switching network and mobile communication system. The method of claim 8, And the called number is a subscriber identification number available in the mobile communication network assigned to the fixed wireless station so that the extension network can be connected to the private network exchange to which the extension network is connected. A mobile station including a base station performing wireless communication with a mobile terminal, a base station controller for controlling the base station, a switch connected to the base station controller to perform a call exchange, and a home location register for managing subscriber location information A private network switch that performs wireless communication with a base station of a mobile communication network including a number translation unit connected to a communication network and performing a number translation and a home location register for managing location information of a subscriber and exchanging calls with a specific extension network. In a call connection method between a mobile communication system and a private switching network including a fixed wireless station connected by means of: Transmitting a location information request message requesting a route for the called number from a calling side switch to a home location register when a call is sent from the mobile terminal to a called number calling an extension terminal connected to the extension network; Transmitting a message requesting a number translation for the called number from a home location register to the number translation unit according to the location information request message; Translating the called number into an identification number of the fixed wireless station and an extension number corresponding to the extension terminal according to a response message from the number translation unit, and transmitting the information to the home location register; Obtaining, by the home location register, route information corresponding to the identification number of the fixed wireless station, and transmitting a response message including the identification number and the extension number of the fixed wireless station to the calling exchange, Establishing a call from the originating exchange to the fixed wireless station through the called exchange corresponding to the route information according to the response message; Setting up a call from the fixed wireless station to the private network switch according to the call setup and transmitting information including the extension number; The private network exchange setting an extension terminal and a call corresponding to the extension number connected to the extension network according to the extension number to establish a call path between the mobile terminal and the extension terminal. Method of call connection between switching network and mobile communication system. The method of claim 10, And the called number is a subscriber identification number available in the mobile communication network assigned to the extension terminal connected to the extension network.