KR100603425B1 - Method of supporting wpabx service in public wireless network - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless office telephone system (WOS), and more particularly to a method for providing a wireless branch telephone service in a terminal outside the wireless branch telephone system area. (C) a method for providing a wireless local area telephone service in a public mobile telephone network outside a region, the first step of performing a call origination according to a WOS service from a first mobile communication terminal outside the WOS region to a second mobile communication terminal in the WOS region; ; A second step of recognizing that the MSC of the PLMN that has received the call originates the call origination according to the WOS service by the call origination, routing for call setup to a WOS VPN gateway for the WOS service; A third step of the WOS VPN gateway identifying information of the first mobile communication terminal and the second mobile communication terminal and routing to the WOS system where the second mobile communication terminal is located; And a fourth step in which the WOS system attempts an incoming call to the second mobile communication terminal and connects the call by an incoming call from the second mobile communication terminal.

WOS, VPN, WOS VPN Gateway, Prefix

Description

Method of providing wireless local telephone service in public mobile telephone network {Method of Supporting WPABX Service in Public Wireless Network}

1 is a diagram illustrating an embodiment of a conventional public mobile phone VPN service and an extension telephone service.

2 is a diagram illustrating an embodiment of a WOS system for linking a conventional public mobile phone VPN service with an extension telephone service.

3 is an exemplary diagram illustrating a call connection type between terminals in a conventional WOS.

4 is an exemplary view illustrating a call connection form between terminals according to a method for providing a wireless local telephone service in a public mobile telephone network outside a wireless local telephone service area according to the present invention;

5 is a detailed operation flowchart of a call connection process from a mobile communication terminal outside a WOS area to a mobile communication terminal in a WOS area in the method for providing a wireless local area telephone service in a public mobile telephone network outside a wireless local area phone service area according to the present invention.

6 is a detailed operation flowchart of a call connection process from a mobile communication terminal outside a WOS area to an internal telephone terminal in a WOS area in a method for providing a wireless local area telephone service in a public mobile telephone network outside a wireless local area phone service area according to the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless office telephone system (WOS), and more particularly to a method for providing a wireless local telephone service in a terminal outside the wireless local telephone system.

Currently, the VPN (Virtual Private Network) service provided by the public mobile telephone network is limited to mobile phones only. In addition, by using an additional service such as call forwarding or intelligent network service, it is possible to extend the scope of the VPN service to a landline telephone of a public switched telephone network (PSTN), but a corporate or private private branch exchange (PABX) The method of providing a service connected to the local telephone terminal connected to the network has not been proposed.

In addition, the introduction of wireless premise telephone system has expanded the scope of VPN service to not only internal telephone terminals connected to private private exchanges in the premises but also mobile telephones located in the WOS zone. However, if the mobile phone terminal registered in the wireless local telephone service is out of the service zone (WOS Zone), only the incoming service among the VPN services provided by the wireless local telephone system is possible and cannot provide the outgoing service.

1 is a diagram illustrating an exemplary embodiment of a conventional public mobile phone VPN service and an extension telephone service.

As shown in FIG. 1, a typical public mobile telephone VPN service and an extension telephone service exist as separate services and their service ranges are not shared.

That is, the PLMN is only between the mobile telephone terminal # 1 (11-1), the mobile telephone terminal # 2 (11-2), and the mobile telephone terminal # 3 (11-3) belonging to the area of the Public Land Mobile Network (PLMN) 100. The service is available through the VPN number according to (100), and also, the extension of the private telephone exchange # 1 (12-1), the extension telephone terminal # 2 (12-2), and the extension telephone belonging to the PBX (110) area Only service through the extension telephone number is possible between the terminal # 3 (12-3). Therefore, if you press a different VPN number, the call connection fails.

The WOS has been proposed to link such a conventional public mobile VPN service with an internal telephone service. An exemplary view according to such a WOS is shown in FIG. 2.

As shown in FIG. 2, the WOS service includes public mobile telephone terminals 11-2 and 11-3 located in the WOS area 200 among public mobile telephone terminals registered as WOS services and internal telephones of the local telephone service ( 12-1, 12-2, 12-3).

That is, mobile phone terminal # 1 (11-1), mobile phone terminal # 2 (11-2) and mobile phone terminal # 3 (11-3) are public mobile phone terminals registered as WOS services, of which mobile phones If the terminal # 2 (11-2) and the mobile terminal # 3 (11-3) is in the WOS service area 200 and the mobile terminal # 1 (11-1) is outside the WOS service area 200, the WOS service is Mobile phone terminal # 2 (11-2), mobile phone terminal # 3 (11-3), extension telephone terminal # 1 (12-1), extension telephone terminal # 2 (12-2) and extension telephone terminal # 3 ( 12-3).

Looking at the WOS service in more detail with reference to FIG. 2, the scope of the WOS service is provided in the WOS service area 200 of the mobile phone terminals 11-1 to 11-3 registered in the WOS service. 2, 11-3) and local telephone terminals 12-1 to 12-3.

In order to use the WOS service, when using the WOS service, a prefix according to the use of the WOS is assigned to a unique VPN number of the corresponding terminals 11-1 to 11-3, 12-1 to 12-3 (for example, the mobile communication terminal #). 1 should be entered in front of 3901). This prefix is used to distinguish the service selection between the user's WOS service and the public mobile phone service in the WOS in charge of the call processing of the mobile phone in the WOS region 200.

2 illustrates the use of "# 7" as a prefix.

Therefore, in the WOS region 200, if there is no WOS prefix (# 7) among the dial digits entered by the user, the WOS prefix 200 is processed as a public mobile telephone service, and if there is a WOS prefix, it is regarded as a WOS service. do.

In FIG. 2, in order to make a call from the mobile telephone terminals 11-1 to 11-3 to the premises telephone terminals 12-1 to 12-3, when the WOS service is used between the mobile telephone terminals 11-1 to 11-3. Although using the same prefix (# 7) is illustrated, it is possible to use a separate prefix or to configure a different number system as needed.

In addition, the configuration of the number system for making a call according to the WOS service from the premises telephone terminals 12-1 to 12-3 to the mobile telephone terminals 11-1 to 11-3 is irrelevant to the diagram illustrated in FIG. PBX 110 is self-setting and configuration. In general, after entering a separate external identification number that is set to use the outgoing line to the WOS instead of the WOS prefix is set to enter the VPN number of the mobile phone.

3 is an exemplary diagram illustrating a call connection type between terminals in a conventional WOS.

According to FIG. 3, the PLMN 100, which is a public telephone network, and the WOS network 300, which is an internal wireless network, are connected to each other. Is connected through. In addition, the WOS network 300 is provided with a WOS system 32 and a private branch network PABX (33) to support the wireless network in the premises connected to the PLMN (100).

Here, the mobile communication terminal # 2 (11-2) and the mobile communication terminal # 3 (11-3) are connected through the WOS system 32, and the PABX 33 is connected to the internal telephone terminals.

Here, the call connection 301 from the mobile communication terminal # 1 (11-1) outside the WOS region to the mobile communication terminal # 2 (11-2) in the WOS region will be described first. Call connection using WOS service is not possible between two parties and call connection is available only when using public mobile telephone service (that is, not using WOS prefix). The call connection path passes through the MSC 31 of the PLMN 100 and the WOS system 32 of the WOS network 300, but the WOS system 32 does not perform a function related to a wireless local area telephone and is a general mobile phone. Perform only functions as part of a system for providing services. That is, it performs the same role as a normal base station (BTS).

Meanwhile, looking at the call connection 302 between the mobile communication terminal # 2 (11-2) in the WOS region and the mobile communication terminal # 3 (11-3) in the WOS region, the mobile communication terminal # 2 (11-2) moves with the mobile communication terminal # 2 (11-2). The call connection 302 using the WOS service is possible between the communication terminals # 3 (11-3). At this time, the call connection path is limited to the WOS system 32 in the WOS network 300.

In addition, the call connection 303 between the mobile communication terminal # 3 (11-3) in the WOS region and the extension telephone terminal # 1 (12-1) in the WOS region is described with reference to the mobile communication terminal # 3 (11-3). The call connection 303 using the WOS service is possible between the extension telephone terminals # 1 (12-1). At this time, the call connection path is limited to the WOS network 300 and interconnects through the WOS system 32 and the PABX 33.

With the introduction of WOS, the VPN area has been extended, and the range of services using the local area network has been extended to registered mobile telephone terminals located in the WOS region. However, even in such WOS, the registered mobile telephone terminals are WOS. In the case where the service is provided outside the WOS area 200, only the incoming service is available among the VPN services provided by the WOS, and there is a problem in that the outgoing service cannot be provided.

The present invention has been proposed to solve the above problems, and provides a method for providing a wireless local area telephone service in a public mobile telephone network outside a wireless local area telephone service area for providing a WOS service to a mobile communication terminal outside the WOS service area. The purpose is to provide.

According to an aspect of the present invention, there is provided a method for providing a wireless local area telephone service in a public mobile telephone network outside a wireless office system (WOS) area, wherein the WOS is transmitted from a first mobile communication terminal outside the WOS area. A first step of performing a call origination according to a WOS service to a second mobile communication terminal in a region; A second step of recognizing that the MSC of the PLMN that has received the call originates the call origination according to the WOS service by the call origination, routing for call setup to a WOS VPN gateway for the WOS service; A third step of the WOS VPN gateway identifying information of the first mobile communication terminal and the second mobile communication terminal and routing to the WOS system where the second mobile communication terminal is located; And a fourth step in which the WOS system attempts an incoming call to the second mobile communication terminal and connects the call by an incoming call from the second mobile communication terminal.

In addition, the present invention provides a method for providing a wireless local area telephone service in a public mobile telephone network outside a wireless office system (WOS: Wireless Office System) area, wherein the internal telephone terminal in the WOS area from a predetermined mobile communication terminal outside the WOS area. Performing a call origination according to the WOS service for the first step; A second step of recognizing that the MSC of the PLMN that has received the call originates the call origination according to the WOS service by the call origination, routing for call setup to a WOS VPN gateway for the WOS service; A third step of the WOS VPN gateway checking information of the predetermined mobile communication terminal and the local telephone terminal and routing to the WOS system where the local telephone terminal is located; A fourth step in which the WOS system detects that the call is an premises telephone through the call origination information and routes to the premises exchange for a corresponding premises telephone service; And a fifth step in which the premises exchange attempts to reach the premises telephone terminal and connects by call from the premises telephone terminal.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that the same components in the drawings are represented by the same reference numerals and symbols as much as possible even though they are shown in different drawings. In addition, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

4 is an exemplary view illustrating a call connection form between terminals according to a method for providing a wireless local telephone service in a public mobile telephone network outside a wireless local telephone service area according to the present invention.

According to FIG. 4, the PLMN 100, which is a public telephone network, and the WOS network 300, which is an internal wireless network, are connected, and the mobile communication terminal # 1 (11-1) that does not belong to the WOS region is an MSC 31 of the PLMN 100. Is connected through. In addition, the WOS network 300 is provided with a WOS system 32 and a private branch network PABX (33) to support the wireless network in the premises connected to the PLMN (100).

In addition, according to the present invention, a WOS VPN gateway 41 is provided for linkage between the PLMN 100 and the WOS network 300 in order to provide a wireless local area telephone service in a public mobile telephone network outside the wireless local area telephone service area. do.

Here, the WOS VPN gateway 41 detects a call connection attempt to which a WOS prefix is assigned through the PLMN 100, checks whether the corresponding outgoing mobile terminal is a terminal registered in the WOS system, and the called terminal. It performs the function of routing to the WOS network. Thus, the WOS VPN Gateway 41 is located in the PLMN 100.

Through the above configuration, first, a call connection 401 from the mobile communication terminal # 1 (11-1) outside the WOS region to the mobile communication terminal # 2 (11-2) in the WOS region, the wireless extension telephone according to the present invention Until the method of providing the wireless local telephone service in the public mobile telephone network outside the service area was applied, only the connection using the public mobile telephone service using the input of the telephone number "010-765-5639" was possible, but according to the present invention, A call can be made between the mobile phone terminals 11-1 and 11-2 registered in the WOS service only by inputting a WOS prefix (for example, "# 7") and a WOS VPN license (for example, "3902"). The operation will be described in detail with reference to FIG. 5 to be described later.

In addition, the call connection 402 from the mobile communication terminal # 1 (11-1) outside the WOS region to the internal telephone terminal # 1 (12-1) in the WOS region is described. Until the method of providing a wireless local telephone service in the telephone network was applied, only the connection using the public mobile telephone service using the input of the telephone number "031-710-4801" was possible, but the WOS prefix (for example, " # 7 ") and the WOS VPN license (for example," 4801 "), the call between the mobile telephone terminal 11-1 and the local telephone terminal 12-1 registered in the WOS service is possible. The operation will be described in detail with reference to FIG. 6 to be described later.

5 is a flowchart illustrating a detailed operation of a call connection process from a mobile communication terminal outside a WOS area to a mobile communication terminal in a WOS area in a method for providing a wireless local area telephone service in a public mobile telephone network outside a wireless local area phone service area according to the present invention. .

First, the call origination is input by entering the WOS prefix # 7 and the VPN number 3902 of the mobile communication terminal 11-2 in the WOS region from the mobile communication terminal # 1 (11-1), which is a mobile communication terminal outside the WOS region. If done (501), the MSC 31 of the PLMN 100 receives the WOS prefix and performs routing for call setup to the WOS VPN gateway 41 (502).

The WOS VPN gateway 41 checks whether or not the originating mobile communication terminal # 1 (11-1) registers the WOS service and requires the WOS system ID and the called terminal of the mobile communication terminal # 1 (11-1) required for call reception. If the mobile communication terminal # 1 (11-1) sent by inquiring about the information from the WOS DB (DataBase) (503) is a WOS service registration terminal, routing for call setup to the WOS system 32 having the corresponding WOS system ID Perform 504.

Here, the specific information that the WOS VPN gateway 41 inquires from the WOS DB for the corresponding call may vary according to the design / policy of the WOS network 300 and its service, but the exemplary embodiment of the present invention is illustrated as follows. .

That is, the WOS VPN gateway 41 is the home terminal of the originating terminal and the WOS system ID (when the WOS network is designed to have the current or most recent location of all WOS service terminals in the WOS DB) at which the called terminal is currently or most recently located. (Home) Search for WOS system ID (mobile phone terminal registered in WOS service belongs to specific WOS system, which is called home WOS system and WOS DB manages home WOS system ID information for each terminal). The registration of the WOS system and the information of the registered WOS system can be obtained.

Typically, the WOS service is provided only between the same group (corporation or organization) even between terminals registered to the corresponding service, and services are not provided between different groups. Therefore, one group is managed only in one specific WOS system (home WOS system), and the current or most recent location information for all terminals belonging to the group is likewise managed.

And when the mobile terminal # 2 (11-2) in the WOS region, which is the destination terminal, is routed to the WOS system 32 in which the WOS system 32 is located, the WOS system 32 attempts to receive the corresponding destination terminal (505). The call connection is made by the incoming call of the mobile phone terminal # 2 (11-2) in the WOS region (506).

6 is a flowchart illustrating a detailed operation of a call connection process from a mobile communication terminal outside a WOS region to an internal telephone terminal in a WOS region in a method for providing a wireless local telephone service in a public mobile telephone network outside a wireless local telephone service region according to the present invention. .

First, the call origination is inputted from the mobile communication terminal # 1 (11-1), which is a mobile communication terminal outside the WOS region, by entering the WOS prefix (# 7) and the VPN number (4801) of the extension telephone terminal 12-1 in the WOS region. If the 601, the MSC 31 of the PLMN 100 receives the WOS prefix and performs routing for call setup to the WOS VPN gateway 41 (602).

The WOS VPN gateway 41 checks whether or not the originating mobile communication terminal # 1 (11-1) registers the WOS service and requires the WOS system ID and the called terminal of the mobile communication terminal # 1 (11-1) required for call reception. If the mobile communication terminal # 1 (11-1) sent by inquiring about the information from the WOS DB (DataBase) (603) is a WOS service registration terminal, routing for call setup to the WOS system 32 having the corresponding WOS system ID Perform 604.

Here, the specific information that the WOS VPN gateway 41 inquires from the WOS DB for the corresponding call may vary depending on the design / policy of the WOS network 300 and its service, but in the embodiment of the present invention, do.

That is, the WOS VPN gateway 41 is the home terminal of the originating terminal and the WOS system ID (when the WOS network is designed to have the current or most recent location of all WOS service terminals in the WOS DB) at which the called terminal is currently or most recently located. (Home) Search for WOS system ID (mobile phone terminal registered in WOS service belongs to specific WOS system, which is called home WOS system and WOS DB manages home WOS system ID information for each terminal). The registration of the WOS system and the information of the registered WOS system can be obtained.

Typically, the WOS service is provided only between the same group (corporation or organization) even between terminals registered to the corresponding service, and services are not provided between different groups. Therefore, one group is managed only in one specific WOS system (home WOS system), and the current or most recent location information for all terminals belonging to the group is likewise managed.

And when the routing to the WOS system 32 in the WOS region 12-1 in the WOS area that is the destination terminal, the WOS system 32 detects that the destination terminal is the premises telephone (605) for connection to the premises telephone Routing to set up a call to the PABX (33) (606), PABX (33) attempts to reach the corresponding extension terminal (12-1) (607) and the extension terminal in the WOS area that is the destination terminal (12-) Call connection is made by the incoming call of 1) (608).

As described above, the method of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, RAM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains, and the above-described embodiments and accompanying It is not limited by the drawings.

As described above, the present invention has the effect that the user of the WOS service can be made using the WOS service not only in the WOS region but also outside the WOS region.

Claims (7)

A method for providing a wireless local telephone service in a public mobile telephone network outside a wireless office system (WOS), A first step of performing a call origination according to a WOS service from a first mobile communication terminal outside the WOS region to a second mobile communication terminal in the WOS region; A second step of recognizing that the MSC of the PLMN that has received the call originates the call origination according to the WOS service by the call origination, routing for call setup to a WOS VPN gateway for the WOS service; A third step of the WOS VPN gateway identifying information of the first mobile communication terminal and the second mobile communication terminal and routing to the WOS system where the second mobile communication terminal is located; And A fourth step in which the WOS system attempts an incoming call to the second mobile communication terminal and connects the call by an incoming call from the second mobile communication terminal; Method of providing wireless local telephone service in mobile telephone network. The method of claim 1, The call origination of the first step is performed by inputting a prefix for a WOS service and a VPN number for a WOS of the second mobile communication terminal (WOS). Method of providing wireless extension telephone service in telephone network. The method of claim 1, And a first mobile communication terminal and a second mobile communication terminal belonging to the same WOS system group. The method according to any one of claims 1 to 3, The WOS VPN gateway, WOS system ID (when WOS Network is designed to have current or latest location of all WOS service terminals in WOS DB) and home WOS system ID of the originating terminal. The mobile phone terminal registered in the WOS service belongs to a specific WOS system, which is called the home WOS system, and the WOS DB manages the home WOS system ID information for each terminal). A method for providing a wireless local telephone service in a public mobile telephone network outside a wireless office system (WOS) area, characterized by obtaining information of a registered WOS system. A method for providing a wireless local telephone service in a public mobile telephone network outside a wireless office system (WOS), A first step of performing a call origination according to a WOS service from a predetermined mobile communication terminal outside said WOS area to a local telephone terminal in said WOS area; A second step of recognizing that the MSC of the PLMN that has received the call originates the call origination according to the WOS service by the call origination, routing for call setup to a WOS VPN gateway for the WOS service; A third step of the WOS VPN gateway checking information of the predetermined mobile communication terminal and the local telephone terminal and routing to the WOS system where the local telephone terminal is located; A fourth step in which the WOS system detects that the call is an premises telephone through the call origination information and routes to the premises exchange for a corresponding premises telephone service; And In the public mobile telephone network outside the wireless office system (WOS: Wireless Office System) comprising the fifth step of the branch exchange attempts to reach the premises telephone terminal and connect by call from the premises telephone terminal How to provide wireless extension telephone service. The method of claim 5, The call origination of the first step is performed by inputting a prefix for a WOS service and a VPN number for a WOS of the second mobile communication terminal (WOS). Method of providing wireless extension telephone service in telephone network. The method according to claim 5 or 6, The WOS VPN gateway, WOS system ID (when WOS Network is designed to have current or latest location of all WOS service terminals in WOS DB) and home WOS system ID of the originating terminal. The mobile phone terminal registered in the WOS service belongs to a specific WOS system, which is called the home WOS system, and the WOS DB manages the home WOS system ID information for each terminal). A method for providing a wireless local telephone service in a public mobile telephone network outside a wireless office system (WOS) area, characterized by obtaining information of a registered WOS system.

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