KR100418151B1 - Private Telecommunication Network System - Google Patents

Abstract

The present invention implements a private call between mobile terminals by implementing a private wireless network, and at the same time, a private mobile communication network capable of simultaneously interworking with a wired telephone network inside a private network and an external public wired communication network 500 and a public mobile communication network 200. A system, comprising: global call processing between a base station controller / base station (RNC / BTS) 310, a private network 300, and a public mobile communication network 400 for wireless communication with a mobile terminal, and a local call processing within the private network 300. Voice packet generated when interworking with wired / wireless telephones in a call agent (CA) 320, a private network switch (PABX) 340 for interworking with a wired telephone network in the private network 300, the private network 300 A local media gateway (LMG) 350 for changing the format of the call, and a call control manager (CCM) 330 performing call exchange processing between the call agent 320 of the private network 300 and the public mobile communication network 400. Voice call consists of the RN The C / BTS 310, the LMG 350, and the PABX 340 are configured to interwork with the public wired communication network 500 and / or the public mobile communication network 400, and other signaling other than a voice call. The location registration message and the short service message (SMS) may be performed through a link between the call agent 320 and the call control manager 330.

Description

Private communication network system, location registration method and call processing method using same {Private Telecommunication Network System}

The present invention relates to a private communication network system, a location registration method and a call processing method between a private mobile communication network and a public mobile communication network using the same, and more particularly, implement a private communication network system to implement internal calls between mobile terminals and at the same time inside a private network. The present invention relates to a private communication network system, a location registration method and a call processing method using the same for enabling simultaneous interworking with a wired telephone network and an external public wired communication network and a public mobile communication network.

In the case of the existing private mobile communication network, the wireless local area telephone exchange should be installed independently in the premises, and the wireless local area telephone exchange installed in the premises should be connected to the public land mobile network (hereinafter referred to as PLMN network) by private line. .

In this way, the wireless extension telephone exchange installed in the premises handled calls generated between premises and interworked with the PLMN network for calls interworking with the PLMN network, but all of them were made using the circuit method. The limitation of circuit resources, the increase of circuit installation cost and the difficulty of maintenance have occurred.

In addition, as the volume of communication is gradually increased and the call of data is increased more than voice, a packet exchange method capable of voice / data communication is in the spotlight, and accordingly, a circuit exchange method for voice communication and a packet exchange method for voice / data communication are being integrated. There is a need for consideration in the construction of the premises communication network for providing the wireless premises telephone service.

Accordingly, the applicant of the present invention has proposed a private mobile communication network system as shown in FIG. 1 as an example in order to solve the above-mentioned technical trends and to solve the problems of the existing circuit voice switching scheme.

Referring to FIG. 1, the proposed private mobile communication network system includes a base station (BTS) and a base station controller (RNC) as a network termination device that performs a radio channel interface function between a mobile terminal and a packet-based network (hereinafter, abbreviated as packet network). Abbreviated hereinafter BTS / RNC) 110; Connected to the BTS / RNC 110 through the Ethernet 10 constituting the packet network to communicate with each other, the call establishment, release and location registration of the corresponding mobile terminal in the service area by the packet network 100 By performing the overall call processing control in the packet network including a, the local outgoing / incoming call processing via the packet network based on the location registration of the visitor mobile terminal and the location information of the previously registered mobile terminal, the packet network (100) Call Agent (Call Agent: CA) (121 + 122: 120) to perform outgoing call processing from the PLMN network 200 to the external PLMN network 200 and the incoming call processing consisting of the packet network 100 in the PLMN communication network 200 ; And installed in the PLMN network 200, interworking with a switch (PLMN MSC) 210 and a home location register (PLMN HLR) 220 of the PLMN network 200, as well as the call agent 120 and a dedicated line ( 11) a call control manager (CCM) that performs a call in / out relay process between the PLMN network 200 and the packet network 100 by remotely connecting and interworking with the call agent 120. It consists of 130.

That is, the proposed private mobile communication network system includes the RNC / BTS 110, the RNC / BTS 110 and the call agent 120 connected through the Ethernet 10, and the call agent 120 and the call agent 120. The call control manager 130 is connected to each other via a dedicated line 20 and installed in a short-range connection so as to interoperate with the switch 210 and the home location register 220 in the PLMN network 200.

However, as described above, the call agent 120 and the call control manager 130 are remotely connected through the leased line 20, and all call processing such as signaling and voice traffic transmission of the call is performed through the leased line 20. When performing the leased line 20, a leased line of at least T1 level should be used, which is a very burdensome factor in terms of installation cost when constructing the entire system. Even if it is used, if the distance between the call agent 120 and the call control manager 130 is very far, there is a disadvantage that the rental cost is never small.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and its object is to provide a conventional private mobile communication network system as shown in FIG. Only small non-real-time data is transmitted through the leased line, and a new call path is formed and processed for a voice call having a relatively large size and real-time data, thereby providing a broadband leased line connecting the call agent and the call control manager. It is to provide a private communication network system, a location registration method and a call processing method using the same, so as to reduce the burden on the system.

1 is a block diagram of a conventional private mobile communication network system,

2 is a block diagram of a private communication network system according to an embodiment of the present invention,

FIG. 3 is a flowchart illustrating a location registration method of a mobile terminal for private network operation according to an embodiment of the present invention. In FIG. 2, FIG. 2 illustrates a location registration process occurring when a mobile terminal of a subscriber using a public mobile communication network enters into a private network. Is a flow chart for

4 is a flowchart illustrating a location registration method of a mobile terminal for private network operation according to an embodiment of the present invention, which is a flowchart of location registration when a mobile terminal of a private network subscriber moves to a public network in FIG.

FIG. 5 is a flowchart illustrating a call processing method of a mobile terminal for private network operation according to an embodiment of the present invention, and is publicly moved from a corresponding mobile terminal registered in a private communication network by the location registration method according to the present invention of FIG. 3. A flowchart of a method for handling a call sent to an arbitrary mobile terminal in a communication network or an arbitrary landline telephone in a public wired communication network,

FIG. 6 is another flowchart illustrating a call processing method of a mobile terminal for private network operation according to an embodiment of the present invention, and is publicly transmitted to a corresponding mobile terminal registered in a private communication network by the location registration method of FIG. 3. A flowchart of a method for processing a call originated from a mobile communication network.

※ Explanation of code for main part of drawing

10: Ethernet 30: mobile terminal

20: Internet based network or frame relay based network

300: private communication network 310: base station controller / base station

320: call agent 330: call control manager

340 private network wired switch 350 local media gateway

400: public mobile communication network 410: exchange

420: home location register 500: public landline

In order to achieve the above object, a private communication network system according to the present invention includes an end device for wireless communication with a mobile terminal; Local communication with at least one terminal device via a packet network, and based on the location registration of the visitor mobile terminal and the location information of the mobile terminal registered accordingly, the local outgoing / incoming call processing through the packet network and the A call agent (or premises location registration / wireless switching device) that performs global outgoing / incoming call processing between the packet network and the external public mobile communication network; In addition, the call agent is remotely connected to each other and interworked with the switch and the home location register of the public mobile communication network, and the location registration of the visitor mobile terminal with respect to the call agent and signaling between the packet network and the public mobile communication network. And a Call Control Manager (or public network interworking exchange device) that performs input / output relay processing for the short message service. A private network wired switch interworking with an exchange of the public mobile communication network through a public wired communication network, and performing wired exchange of premises; And converting a packet network-based voice call processed and output from the call agent into a wired network-based voice call and providing the input to the private network wired switch, and converting a wired network-based voice call output from the private network wired switch into a packet network-based voice call. It consists of a local media gateway that serves as input to the call agent.

In addition, the call agent and the call control manager are connected to each other via a remote connection via an Internet (IP) based network or a Frame Relay based network, but the data size is relatively high compared to a voice call. It is characterized by interworking communication only for signaling, location registration / deletion message and short message which do not need small and real time service.

In order to achieve the above object, a method of registering a location of a mobile terminal using a private communication network system according to the present invention includes an end device, a call agent, a call control manager, a private network wired switch, and a local media gateway. A first step of, after establishing a private network system, determining, at the call agent, whether a location registration request message from a corresponding mobile terminal entered into the private network of the private network system is received through the terminating device; Register the location of the mobile terminal based on the received location registration request message, register one of the virtual telephone numbers assigned to the private network wired switch in association with the registration information, and then register the corresponding registration request message. Providing a second call control manager; In the call control manager, registering the registration information and the virtual telephone number in association with the registration request message provided from the call agent, and then providing a corresponding registration request message to the home location register. ; And register the registration information and the virtual phone number in association with the registration request message provided by the call control manager in the home location register, and then register the corresponding message corresponding to the registration deletion message. And a fourth step of transmitting to the corresponding exchange of the public mobile communication network in which the public mobile communication network is located and deleting the location information of the corresponding mobile terminal registered in the exchange.

In order to achieve the above object, an example of a call processing method of a mobile terminal using a private communication network system according to the present invention assumes that the location of a subscriber mobile terminal is registered according to the location registration method of the present invention as described above. A method for processing a call sent from the public mobile communication network to the corresponding mobile terminal registered in the private communication network, wherein the exchange of the public mobile communication network registers in association with the position information of the corresponding incoming mobile terminal of the originating call from the home location register. Acquiring the corresponding virtual telephone number and transmitting the outgoing call to the private network wired switch through the public wired communication network based on the obtained virtual telephone number; At the private network wired switch, recognizing that the received outgoing call is according to the virtual telephone number, converting the outgoing call to a packet network based outgoing call through the local media gateway, and transmitting the converted call to the call agent; And the call agent, based on the virtual telephone number of the received outgoing call, search for the called number of the registered destination mobile terminal and send the outgoing call to the base station controller / base station based on the found called number. And a third step of transmitting to the called mobile terminal.

Further, in the first step of the configuration of the call processing method, when the switch of the public mobile communication network determines that the originating call is not a voice call, the exchange call is sent to the call control manager, and the call control manager The outgoing call is interworked with the call agent, and the outgoing call is a message having a relatively small data size and requiring no real-time service for the voice call, for example, a location deletion request message or a short message. .

Another example of a call processing method of a mobile terminal using a private communication network system according to the present invention to achieve the above object, after the assumption that the location of the subscriber mobile terminal is registered according to the location registration method of the present invention as described above A method for processing a call originated from the mobile terminal registered in the private communication network to any mobile terminal in the public mobile communication network or to a fixed landline telephone in the public wired trunking network, wherein the call agent sets the base station controller / base station. A first step of determining whether a corresponding destination mobile terminal of the outgoing call received through the device is registered; A second step of determining whether the originating call is a voice call if it is not registered as the determination result; A third step of converting the outgoing call into a wired network based outgoing call through the local media gateway and transmitting the outgoing call to the private network wired switch if the outgoing call is a voice call; And a fourth step in the private network wired switch, transmitting the originating call to the switch side of the public mobile communication network through the public wired communication network or the public wired communication network.

In addition, when it is determined that the outgoing call is not a voice call in the second step among the configuration of another example of the call processing method, in the third step, the call agent transmits the outgoing call to the call control manager for processing. The outgoing call is a message having a relatively small data size and requiring no real-time service for the voice call, for example, the message is a location registration message or a short message.

Hereinafter, a private communication network system according to a preferred embodiment of the present invention, a location registration method and a call processing method using the same will be described in detail with reference to the accompanying drawings.

2 is a block diagram of a private communication network system according to an embodiment of the present invention. As shown in the figure, a wireless channel interface function between a mobile terminal and a packet-based network (hereinafter, abbreviated as packet network) is performed. A base station (BTS) and a base station controller (RNC) (hereinafter abbreviated as RNC / BTS) 310 as a private network termination device; Packet communication with the RNC / BTS 310 is performed through Ethernet 10, a medium of the packet network configuration, to perform overall call processing control including setting, releasing, and location registration of a corresponding mobile terminal in a service area of a private network 300. Based on the location registration of the visitor mobile terminal through the RNC / BTS 310 and the location information of the previously registered mobile terminal, the local call origination / reception process generated in the private network 300, the private network A call agent (CA) 320 which performs outgoing call processing from the 300 to the external public network 400 and 500, and an incoming call processing consisting of the private network 100 in the public network 400 and 500; Public call communication system (PLMN) 400 interworking with the call agent 320 is connected to each other remotely via one of the Internet-based network, a frame relay-based network, or a dedicated line of 64 Kbps or less. In conjunction with the exchange (MSC) 410 and the home location register (HLR) 420, the location registration of the visitor mobile terminal to the call agent 320, and the private network 300 and the air movement A call control manager (CCM) 330 which performs input / output relay processing for signaling and short message service between the communication networks 400; A private network wired switch (PABX) 340 connected to the switch 410 of the public mobile communication network 400 to perform wired exchange in the premises through a public wired communication (telephone) network (PSTN) 500; And converts the packet network-based voice call processed and output from the call agent 320 into a wired network-based voice call and provides the input to the private network wired switch 340, and also outputs the wired network-based output from the private network wired switch 340. It consists of a Local Media Gateway (LMG) 350 which converts a voice call into a packet network based voice call and provides it as an input of the call agent 300.

That is, the private communication network system of FIG. 2 according to the present invention is configured to interwork the private (communication) network 300 with the existing public mobile communication network 400 and also with the existing public wired telephone network 500. The call control manager 330 is placed in the public network 400 for interworking between the private network 300 and the public mobile communication network 400, and the private mobile communication network basically has the RNC / BTS 310. The call agent 320 and the call agent 320 and the call control manager 330 are interconnected. In addition, the call agent 320 and the private network wired switch 340 were interconnected through the local media gateway 350 to connect to the existing wired network 500.

Subsequently, a location registration method and a call processing method of a mobile terminal for private network operation according to an embodiment of the present invention will be described. However, since this is applied to the private network system of FIG. Explain in parallel with the action.

3 is a flowchart illustrating a location registration method of a mobile terminal for private network operation according to an embodiment of the present invention, when a subscriber's mobile terminal entering the private network 300 enters into the private network 300. This is a flow chart of the location registration process that takes place.

First, when the mobile terminal 30 requests the base station (BTS) of the RNC / BTS 310 to register its location (S301), the base station controller (RNC) of the RNC / BTS 301 is located The registration request message is transmitted to the call agent 320 (S302).

The call agent 320 registers the location of the corresponding mobile terminal based on the reception of the location registration request message, and has one of a virtual dial number (VDN) assigned to the private network wired switch 340. Register in association with the registration information, and transmits a registration request message corresponding to the registration information, that is, a location registration request and a message about a call forwarding registration request to the VDN, to the call control manager 330 (S303). ).

Here, the VDN is a virtual telephone number of the private network wired switch 340, and the call agent 320 is a number assigned to the corresponding mobile terminal entering the private network 300. Therefore, in step S303, the call agent 320 assigns a VDN to the corresponding mobile terminal and maps the VDN and the mobile number MIN of the mobile terminal.

Subsequently, the call control manager 330 registers the MIN and the VDN as the registration information in association with each other based on the registration request message transmitted and received from the call agent 320, and then registers a corresponding registration request message. In operation S304, a message regarding a location registration request and a call forwarding registration request to the VDN is transmitted to the home location register 420 of the public mobile communication network 400.

The home location register 420 mutually registers the MIN and the VDN as the registration information based on the registration request message transmitted and received from the call control manager 330, and then registers the corresponding location deletion message. The mobile terminal 30 transmits to the corresponding switch 410 of the public mobile communication network 400 which is immediately before, and deletes the location information of the corresponding mobile terminal 30 previously registered in the switch 410. (S305).

Subsequently, in response to the request in steps S302, S303, S304, and S305, the switch 410 deletes the corresponding location information based on the location deletion request message in step S305, and then the location thereof. In step S306, the home location register 420 transmits a deletion response message to the home location register 420. The home location register 420 then requests for a location registration request and a call forwarding registration request to the VDN. A response message is transmitted to the call control manager 330 (S307). Accordingly, the call control manager 330 responds to the location registration request in step S303 and the call forwarding registration request to the VDN. The message is transmitted to the call agent 320 (S308). Accordingly, the call agent 320 sends the RNC / BTS 310 a response message for the location registration request in step S302. By transmitting (S309), the location registration process according to the present invention is terminated.

4 is a flowchart illustrating a location registration method of a mobile terminal for private network operation according to an embodiment of the present invention, which is a flowchart of location registration that occurs when a mobile terminal of a subscriber of the private network 300 moves to the public network 400. to be.

First, when the mobile terminal 30 requests its location registration to the switch 410 through a base station / base international controller (not shown) of the public network 400, the switch 410 accordingly The location registration request message is transmitted to the location register 420 (S401).

The home location register 420 registers the location of the mobile terminal 30 based on the location registration request message transmitted and received from the exchange 410, and then the mobile terminal 30 belongs to the previous location. The call control manager 330 transmits a location deletion request message to the call control manager 330 to request that the location information of the mobile terminal 30 previously registered is deleted (S402).

The call control manager 330 deletes the location information of the mobile terminal 30 based on the location deletion request message transmitted and received from the home location register 420, and then corresponds to the location deletion request message. The mobile terminal 30 transmits to the call agent 320 previously belonged to (S403).

The call agent 320 deletes the location information of the mobile terminal 30 based on the location deletion request message transmitted and received from the call control manager 330, and then sends a location deletion response message thereto. The call control manager 330 sends a response (S404). Accordingly, the call control manager 330 transmits a location deletion response message for the location deletion request in step S402 to the home location register 420 and responds (S405). Accordingly, the home location register 420 ) Responds by transmitting a location registration response message for the location registration request in step S401 to the switch 410 (S406), and then the corresponding base station / base international controller of the public network 400 from the switch 410. After transmitting the location registration response message to the response (not shown), and ends.

FIG. 5 is a flowchart illustrating a call processing method of a mobile terminal for private network operation according to an embodiment of the present invention, wherein the corresponding mobile device is registered in the private communication network 300 by the location registration method according to the present invention of FIG. 3. A flowchart of a method for handling a call originated from a terminal 30 to any mobile terminal in the public mobile communication network 400 or to an arbitrary landline telephone in the public wired communication network 500.

First, when the corresponding mobile terminal 30 attempts to make a call (S501), the outgoing call is transmitted to the call agent 320 through the RNC / BTS 310 (S502), and the call agent 320 ) Determines whether the corresponding destination mobile terminal of the outgoing call transmitted and received from the RNC / BTS 310 is already registered with itself (S503).

If it is registered, it may perform its own local call processing. In this embodiment, since the called mobile terminal is not registered under the premise of sending to the external network, in this case, it is determined whether the calling call is a voice call. (S504).

If the outgoing call is a voice call as a result of the determination, the outgoing call is provided as an input of the local media gateway 350 (S505), and the local media gateway 350 transmits the input packet-based outgoing call based on a wired network. After converting to a call (S506), and transmits to the private network wired switch 340 (S507).

The private network wired switch 340 transmits the public wired network-based outgoing call transmitted from the local media gateway 350 to the public wired network 500 or the public wired communication network 500 according to the destination. The mobile communication network 400 is transmitted to the exchange 410 side to be processed, but in the present embodiment, the public wired communication network 500 is assumed to be transmitted to any mobile terminal side of the public mobile communication network 400 among the external networks. It transmits to the switch 410 side of the public mobile communication network 400 through (S508).

Since the call processing of the rear end of the switch 410 is the same as that of the existing public mobile communication network 400, description thereof will be omitted.

On the other hand, if it is determined in step S504 that the outgoing call is not a voice call, the call agent 320 does not perform the process of step S505, and instead transmits the outgoing call to the call control manager 330 for processing. In this case, the outgoing call is a message having a relatively smaller data size and no real-time service than the voice call. For example, the outgoing call is a location registration message or a short message.

As described above, the voice call is made through the wired network 500, and only the call agent 320 and the call control manager 330 other signaling, location registration message, short service message (SMS) and the like other than the voice call are made. The reason for this is that the link between the call control managers and the call control manager 330 is a broadband connection because the amount of data is very small compared to the voice call and does not require real time service. It is not intended to allow the use of very small frame relay networks or Internet protocol (IP) networks.

6 is another flowchart illustrating a call processing method of a mobile terminal for private network operation according to an embodiment of the present invention, wherein the corresponding registration is registered in the private communication network 300 by the location registration method according to the present invention of FIG. 3. A flowchart of a method for processing a call originating from the public mobile communication network 400 to a mobile terminal 30 is shown.

First, when an arbitrary mobile terminal (not shown) in the public mobile communication network 400 attempts to make a call to the mobile terminal 30, the originating call is a corresponding RNC / BTS (not shown) of the public mobile communication network 400. Is transmitted to the switch 410, and the switch 410 is linked to the location information of the corresponding destination mobile terminal 30 of the originating call from the home location register 420 based on the received outgoing call. Acquire a registered corresponding virtual telephone number (VDN) (see step S305 of FIG. 3) (S601), and through the public wired network 500 based on the obtained virtual telephone number, the private network wired switch 340 The outgoing call is transmitted to (S602).

Subsequently, the private network wired switch 340 recognizes that the outgoing call received through the public wired communication network 500 is according to a virtual telephone number (VDN) assigned to the private network wired switch 500 and inputs it to the local media gateway 350. The local media gateway 350 converts the input wired network-based outgoing call into a packet-based outgoing call (S604), and transmits it to the call agent 320 (S605).

The call agent 320 is a called number of the called mobile terminal 30 previously registered through the step S303 of FIG. 3 based on the virtual telephone number of the outgoing call transmitted and received from the local media gateway 350. Search for (MIN) (S606), and transmit the outgoing call to the called mobile terminal 30 side through the base station controller / base station 310 based on the found called number (S607).

On the other hand, when it is determined that the outgoing call is not a voice call, the exchange 410 transmits the outgoing call to the call control manager 330, and the call control manager 330 is interworked with the call agent 320. The outgoing call is a case of a location deletion request message or a short message that has a relatively small data size and does not require a real-time service for the voice call. And other signaling, location registration message, short service message (SMS), etc. other than a voice call are performed through a link between the call agent 320 and the call control manager 330. 5 is the same as the description.

In addition, the private network wired switch 340 transmits the received voice call to the call agent 320 through the local media gateway 350 to the corresponding mobile terminal in step S603, and transmits the call to the corresponding mobile terminal. Under the control of the call agent 320, the voice call can also be transferred to a substantial local telephone number (PDN: PABX Dial Number) connected to the private network wired switch 340 assigned to the mobile terminal user. The call agent 320 additionally registers the premises telephone number (PDN) in connection with the location registration process in step S303 of FIG. 3 and based on this, a simple control program (for example, ringback tone of PDN) If Back Tone) is greater than or equal to the set number of times, control may be performed by disconnecting the PDN and handing the call to the corresponding mobile terminal.

As described in detail above, according to the private communication network system, the location registration method and the call processing method using the same, the following effects are created.

First, the burden on the link between the call agent and the call control manager can be reduced. In fact, according to the present invention, since only information about signaling and short service comes and goes through the ring between the call agent and the call control manager, only an environment capable of transmitting very small non real-time data needs to be created. Second, there is no need to use a media gateway connected to the call control manager in the public mobile communication network. Since the actual voice call is connected through the private network wired switch (PABX), the capacity of the local media gateway between the private network wired switch and the call agent only needs to be slightly increased. Third, all the services provided by the existing wireless network can be used despite the structure change.

Claims (10)

An end device for wireless communication with the mobile terminal; Local communication with at least one terminal device via a packet network, and based on the location registration of the visitor mobile terminal and the location information of the mobile terminal registered accordingly, the local outgoing / incoming call processing through the packet network and the A call agent performing global outgoing / incoming call processing between a packet network and an external public mobile communication network; In addition, the call agent is remotely connected to each other and interworked with the switch and the home location register of the public mobile communication network, and the location registration of the visitor mobile terminal with respect to the call agent and signaling between the packet network and the public mobile communication network. And a call control manager for performing input / output relay processing for the short message service. A private network wired switch interworking with an exchange of the public mobile communication network through a public wired communication network, and performing wired exchange of premises; And Converts the packet network-based voice call processed and output from the call agent into a wired network-based voice call and provides the input to the private network wired switch, and converts the wired network-based voice call output from the private network wired switch into a packet network-based voice call. A private network system comprising a local media gateway providing as input of an agent. The method of claim 1, The call agent and the call control manager are connected to each other via a remote connection through an internet (IP) based network or a frame relay based network, and have relatively small data size and real time compared to a voice call. A private network system, characterized in that interworking communication is performed only for signaling, location registration / deletion message, and / or short message that do not require service. An end device for wireless communication with the mobile terminal; Communicating with the terminal device through a packet network, performing location registration of the visitor mobile terminal, local originating / incoming call processing through the packet network, and global originating / incoming call processing between the packet network and an external public mobile communication network; A call agent; The call agent is remotely connected and interworked with a switch and a home location register of the public mobile communication network to register the location of the visitor mobile terminal with respect to the call agent and to provide signaling and short message service between the packet network and the public mobile communication network. A call control manager for performing input / output relay processing; A private network wired switch interworking with an exchange of the public mobile communication network via a public wired communication network, and performing wired exchange of premises; A private communication network comprising a local media gateway that converts a packet network-based voice call processed and output from the call agent into a wired network-based voice call and provides it as an input of the private network wired switch, and provides an inverse converted voice call as an input of the call agent. In the system, A first step of determining, at the call agent, whether a location registration request message from a corresponding mobile terminal entered into a private communication network of the private communication network system is received through the terminating device; Register the location of the mobile terminal based on the received location registration request message, register one of the virtual telephone numbers assigned to the private network wired switch in association with the registration information, and then register the corresponding registration request message. Providing a second call control manager; In the call control manager, registering the registration information and the virtual telephone number in association with the registration request message provided from the call agent, and then providing a corresponding registration request message to the home location register. ; And The home location register registers the registration information and the virtual phone number in association with the registration request message provided from the call control manager, and then registers a corresponding message corresponding to the registration deletion message. And a fourth step of transmitting to the corresponding exchange of the public mobile communication network to delete the location information of the corresponding mobile terminal registered in the exchange. Determining, at the call agent, whether a location registration request message from the corresponding mobile terminal entered into the private network of the private network system is received through the terminating device; Register the location of the mobile terminal according to the received location registration request message, register one of the virtual telephone numbers assigned to the private network wired switch in association with the registration information, and then call the corresponding registration request message. Providing to the manager; In the call control manager, registering the registration information and the virtual telephone number in association with the registration request message provided from a call agent, and then providing a registration request message corresponding to the registration information message to the home location register; And registers the registration information and the virtual phone number in association with the registration request message provided from the call control manager, and then registers a corresponding message corresponding to the registration deletion message. The mobile terminal registered in the private communication network from the public mobile communication network by the location registration method defined in the step of transmitting to the corresponding exchange of the mobile communication network to delete the location information of the mobile terminal registered with the exchange. In the method of handling a call sent to, At the exchange of the public mobile communication network, the corresponding virtual telephone number registered in association with the location information of the corresponding incoming mobile terminal of the outgoing call is obtained from the home location register, and the public wired communication network is acquired based on the obtained virtual telephone number. Transmitting the outgoing call to the private network wired switch through the first step; At the private network wired switch, recognizing that the received outgoing call is according to the virtual telephone number, converting the outgoing call to a packet network based outgoing call through the local media gateway, and transmitting the converted call to the call agent; And The call agent searches for the called number of the registered destination mobile terminal based on the virtual telephone number of the received outgoing call, and sends the outgoing call through the base station controller / base station based on the found called number. And a third step of transmitting to the called mobile terminal. The method of claim 4, wherein In the first step of transmitting the outgoing call to the private network wired switch, if the exchange of the public mobile communication network determines that the outgoing call is not a voice call, the outgoing call is transmitted to the call control manager, and the call control manager A call processing method of a mobile terminal using a private network system, characterized in that for processing an outgoing call in conjunction with a call agent. The method of claim 5, The outgoing call is a message having a relatively small data size for a voice call and not requiring a real-time service, and is a location deletion request message or a short message. Determining, at the call agent, whether a location registration request message from the corresponding mobile terminal entered into the private network of the private network system is received through the terminating device; Register the location of the mobile terminal according to the received location registration request message, register one of the virtual telephone numbers assigned to the private network wired switch in association with the registration information, and then call the corresponding registration request message. Providing to the manager; In the call control manager, registering the registration information and the virtual telephone number in association with the registration request message provided from a call agent, and then providing a registration request message corresponding to the registration information message to the home location register; And registers the registration information and the virtual phone number in association with the registration request message provided from the call control manager, and then registers a corresponding message corresponding to the registration deletion message. Transmitting from the corresponding mobile terminal registered in the private network by the location registration method defined in the step of transmitting to the corresponding exchange of the mobile communication network to delete the location information of the mobile terminal registered in the exchange. A method for handling a call sent to an arbitrary mobile terminal in a network or to an arbitrary landline telephone in the public fixed line network, A first step of determining, at the call agent, whether a corresponding destination mobile terminal of the outgoing call received through the base station controller / base station is registered; A second step of determining whether the originating call is a voice call if it is not registered as the determination result; A third step of converting the outgoing call into a wired network based outgoing call through the local media gateway and transmitting the outgoing call to the private network wired switch if the outgoing call is a voice call; And And a fourth step of transmitting the originating call to the exchange side of the public mobile communication network through the public wired communication network or the public wired communication network in the private network wired switch. Treatment method. The method of claim 7, wherein In the second step of determining whether the outgoing call is a voice call, if it is determined that the outgoing call is not a voice call, in the third step, the call agent transmits the outgoing call to the call control manager for processing. Call processing method of a mobile terminal using a private network system. The method of claim 8, The outgoing call is a message processing method of a mobile terminal using a private communication system, characterized in that a relatively small data size for a voice call and does not require a real-time service. The method of claim 9, And the message is a location registration message or a short message.