WO2008051021A1

WO2008051021A1 - Private mobile network integration service system using public land mobile network and call processing method therefof

Info

Publication number: WO2008051021A1
Application number: PCT/KR2007/005262
Authority: WO
Inventors: Shin-Jae Kim; Byung-Ha Ryu
Original assignee: Ktfreetel Co., Ltd.
Priority date: 2006-10-26
Filing date: 2007-10-24
Publication date: 2008-05-02

Abstract

According to the present invention, a private mobile network integration service system is disclosed, which includes a signal transfer point for performing a signal processing between a home location register (HLR) and a mobile switching system or between mobile switching systems; a private branch exchange connected to the mobile switching system; and a call setup management device for interpreting called/calling numbers and providing the interpreted numbers to the mobile switching system, wherein the mobile switching system performs a private mobile network call processing using the interpreted numbers.

Description

PRIVATE MOBILE NETWORK INTEGRATION SERVICE

SYSTEM USING PUBLIC LAND MOBILE NETWORK AND

CALL PROCESSING METHOD THEREOF

Technical Field

[1] The present invention relates to a private mobile network integration service system and a call processing method thereof, and in particular, to a private mobile network integration service system which integrally provides wireless network, wired network and private mobile network services with minimum change of the conventional public land mobile network (PLMN), and a call processing method thereof. Background Art

[2] In the same way as the conventional private wired network (PBX: Private Branch eXchange) service, a private mobile network (WPBX: Wireless PABX (Private Automatic Branch eXchange)) service is a kind of local area network service in a specific building or place of business, and if an integration system is established to interwork a private mobile network with a public land mobile network (PLMN), it is possible to provide a convenient and economical mobile communication service.

[3] As an example of a typical technique for a private mobile network integration service, Korean Patent Registration No. 365790 (titled 'system and method capable of public and private mobile communication service') is cited.

[4] The above-mentioned patent discloses a system structure of a private mobile network (WPBX) mixed with a mobile communication network, and its main components are shown in FIG. 1.

[5] Referring to FIG. 1, to interwork with PLMN 10, a public switched telephone network (PSTN) 15 and a private (in-building) IP network 16, a private mobile network system 17 includes PBX 18 interworking with the PSTN 15, pBSC (a private BSC) 19 interworking with the PLMN 10 and pBTS (a private BTS) 20 to provide public network call and in-building network call services.

[6] More specifically, a public network call is processed by a home location register

(HLR) 11, a mobile switching center (MSC) 12, a base system controller (BSC) 13 and a base transmitter system (BTS) 14, an in-building network call is processed by the PBX 18, pBSC 19 and pBTS 20, and currently the related system on the market is for example, InfoMobile 3G and InfoMobile-3GS.

[7] However, the above-mentioned patent necessarily requires the pBSC 19 to process the public network call and the in-building network call, and changes the existing PLMN 10 system to operate the mobile network, for example transfer/rearrangement of the BTS 14.

[8] As another example of a typical technique for a private mobile network integration service, Korean Patent Registration No. 454945 (titled 'public land mobile network and private mobile network integration service network and system therefor') is cited.

[9] The above-mentioned patent discloses an integration service network and its system, which solve the problem involved in establishing and operating a system by incorporating a function of pBSC in a public land network BSC to make the most of a commercial public land mobile network.

[10] Referring to FIG. 2, the public land network BSC includes a public land call processing module 302, and to provide the function of pBSC, further includes a message routing module 300, a private HLR 308, a private call processing module 304 and a private MSC module 306. Thus, in the case that the generated call is a public land network call, signaling is transmitted from the message routing module 300 to the public land call processing module 302 and the call is sent through MSC 202, and in the case that the generated call is a private network call, signaling is transmitted to the private HLR 308 through the message routing module 300 to perform an authentication processing, and then the call is sent by interworking with PBX 212 through the private call processing module 304 and the private MSC module 306.

[11] However, for commercialization, the above-mentioned patent also should change a structure of the public land mobile network so much, and in the case that a plurality of private mobile networks are established in a single BSC, it is not easy to operate the private mobile networks.

[12] Meanwhile, to provide integration of public land mobile network and private mobile network services, authentication processing of private mobile network subscribers should be performed integrally over the public land mobile network and the private mobile network.

[13] With regard to the above, Korean Patent Registration No. 450950 (titled 'authentication method of a mobile terminal for private/public packet data service and private network system thereof) discloses a system in which a link control protocol is formed between a radio access network (RAN) in a private mobile network and a terminal to perform an authentication, thereby providing a security function to the private mobile network connected to an external data network.

[14] However, the conventional private mobile network integration service has a complex system configuration, and besides any system has never been taught, which provides an integration management function including authentication, registration and recognition of In/Out of subscribers in a mobile communication network and a private mobile network.

[15] Meanwhile, to provide integration of public land mobile network and private mobile network services, a system for providing a traffic state of a called terminal to a calling terminal is required regardless of a public land mobile network and a private mobile network.

[16] With regard to the above, Korean Patent Registration No. 547719 (titled 'private mobile communication system and method of providing information for public busy state of a mobile station') discloses a system which allows for an in-building mobile communication system to recognize a public busy state of a mobile station in an in- building mobile network (private mobile network), and in the case that an incoming call is generated to the corresponding mobile station in the in-building mobile network, informs the public busy state of the mobile station.

[17] However, in the case that an incoming call is generated to a mobile station of a private busy state in a public land network, the above-mentioned patent can not provide a traffic state of the mobile station to a calling terminal. Disclosure of Invention Technical Problem

[18] The present invention is devised in consideration of the above, and it is an object of the present invention to provide a private mobile network integration service system using a public land mobile network, which provides a private mobile network integrated service by interworking a signal transfer point (STP) and MSC with PBX without changing BSC or BTS of the conventional public land mobile network, and a call processing method thereof.

[19] It is another object of the present invention to provide a private mobile network integration service system using a public land mobile network, which is applicable to all new mobile communication network systems including a synchronous CDMA (Code Division Multiple Access) network, an asynchronous WCDMA (Wideband Code Division Multiple Access) network and a future 4G (4th Generation), and a call processing method thereof.

[20] It is another object of the present invention to provide a private mobile network integration service system for subscriber integration management, which is capable of integrally managing a public land mobile network and a private mobile network through signal link using a signal transfer point (STP), and a signaling processing method thereof.

[21] It is another object of the present invention to provide a private mobile network integration service system with an improved traffic state managing structure, which is capable of providing a traffic state of a called terminal to a calling terminal regardless of a public land mobile network and a private mobile network, and a call processing method thereof. Technical Solution

[22] In order to achieve the above-mentioned objects, a private mobile network integration service system according to an aspect of the present invention includes a signal transfer point for performing a signal processing between a home location register (HLR) and a mobile switching system or between mobile switching systems; a private branch exchange connected to the mobile switching system; and a call setup management device for interpreting called/calling numbers and providing the interpreted called/calling numbers to the mobile switching system, wherein the mobile switching system performs a private mobile network call processing using the interpreted called/calling numbers.

[23] According to another aspect of the present invention, a private mobile network integration service system includes a signal transfer point for performing a signal processing between a home location register and a mobile switching system or between mobile switching systems; a private branch exchange connected to and interworking with the mobile switching system; and a subscriber management device connected to the signal transfer point for registering a private mobile network subscriber, recognizing In/Out of a terminal in a public land mobile network and a private mobile network, and updating a public land mobile network subscriber database (DB) and a private mobile network subscriber database (DB).

[24] According to another aspect of the present invention, a private mobile network integration service system includes a signal transfer point for performing a signal processing between a home location register and a mobile switching system or between mobile switching systems; a private branch exchange connected to and interworking with the mobile switching system; and a call processing management device connected to the signal transfer point for interpreting called/calling numbers when a call is requested and providing the interpreted called/calling numbers to the mobile switching system, wherein the mobile switching system receives information of called/calling terminals from the call processing management device, checks a traffic state of the called terminal and transmits a busy state of the called terminal to the calling terminal. Brief Description of the Drawings

[25] These and other features, aspects, and advantages of preferred embodiments of the present invention will be more fully described in the following detailed description, taken accompanying drawings. In the drawings:

[26] FIGs. 1 and 2 are views illustrating a configuration of the conventional private mobile network integration service system.

[27] FIGs. 3 to 6 are views illustrating a configuration of a private mobile network integration service system provided according to the present invention. [28] FIGs. 7 and 8 are flow charts illustrating a call processing performed by the private mobile network integration service system of FIG. 3.

[29] FIGs. 9 and 10 are flow charts illustrating a call processing performed by the private mobile network integration service system of FIG. 4.

[30] FIGs. 11 to 14 are flow charts illustrating a call processing performed by the private mobile network integration service system of FIG. 5.

[31] FIGs. 15 to 17 are flow charts illustrating a subscriber registration signaling processing performed according to the present invention.

[32] FIGs. 18 to 20 are schematic diagrams illustrating a terminal location registering method in a synchronous CDMA network provided according to the present invention.

[33] FIGs. 21 and 22 are flow charts illustrating a terminal location registration signaling processing method in the synchronous CDMA network performed according to the present invention.

[34] FIG. 23 is a flow chart illustrating another example of a terminal location registration signaling processing method in a synchronous CDMA network performed according to the present invention.

[35] FIGs. 24 and 25 are schematic diagrams illustrating a terminal location registering method in an asynchronous WCDMA network provided according to the present invention.

[36] FIGs. 26 to 28 are flow charts illustrating a terminal location registration signaling processing method in the asynchronous WCDMA network performed according to the present invention.

[37] FIG. 29 is a diagram illustrating an LSA parameter structure of a GMM message.

[38] FIGs. 30 and 31 are flow charts illustrating a call processing performed by the private mobile network integration service system of FIG. 6.

[39] FIGs. 32 and 33 are flow charts illustrating a call processing performed by the private mobile network integration service system of FIG. 4.

[40] FIGs. 34 and 35 are flow charts illustrating a call processing performed by the private mobile network integration service system of FIG. 5. Best Mode for Carrying Out the Invention

[41] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to the description, it should be understood that the terms used in the specification and the appended claims should not be construed as limited to general and dictionary meanings, but interpreted based on the meanings and concepts corresponding to technical aspects of the present invention on the basis of the principle that the inventor is allowed to define terms appropriately for the best explanation. Therefore, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.

[42] FIG. 3 is a view illustrating a configuration of a private mobile network integration service system according to a first embodiment of the present invention.

[43] Referring to FIG. 3, the private mobile network integration service system according to the first embodiment of the present invention includes a private branch exchange (PBX) 107 connected to a mobile switching system 103 of a public land mobile network (PLMN), and a private location register (PBX-HLR/VLR) 108 as a call setup management device provided at the side of the private branch exchange (PBX) 107 for providing the mobile switching system 103 with information for call processing. Hereinafter, in drawings, a dotted line represents a signal link and a thick solid line represents a trunk link.

[44] The public land mobile network (PLMN) provides a synchronous CDMA (Code

Division Multiple Access) or asynchronous WCDMA (Wideband Code Division Multiple Access) type mobile communication service to a mobile station (MS), and as well known, includes a home location register (HLR) 100, a plurality of mobile switching systems 103 connected to the home location register (HLR) 100, a plurality of base station controllers (BSCs (Base Station Controllers) or RANs (Radio Access Networks)) 104 connected to the mobile switching systems 103, a plurality of base stations (BTSs (Base Transceiver Stations) or Node Bs) 105, and a signal transfer point (STP) 102.

[45] The signal transfer point (STP) 102 serves as a transit exchange for routing No. 7 signal between the home location register (HLR) 100 and the mobile switching system 103 or between the mobile switching systems 103. An exclusive location register (XLR) 101 may be connected to the signal transfer point (STP) 102 for performing a location registration processing.

[46] The mobile switching system 103 includes MSC/VLR as a system for performing a main voice call processing in 2G and 3G and subscriber DB, SGSN/VLR as a system for performing a data processing in 3G and subscriber DB, and PDSN as a system for performing a data processing in 2G. Hereinafter, the present invention will be described focusing on the case that the MSC/VLR type mobile switching system 103 interworks with the private branch exchange (PBX) 107.

[47] The mobile switching system 103 includes elements for interpreting called/calling numbers of a private mobile network call to recognize the private mobile network call when the private mobile network call is generated. Although not shown in drawings, the mobile switching system 103 includes a global title database (GT DB) for storing a GT code assigned to each private branch exchange (PBX) 107, and a VLR subscriber DB for storing a subscriber information with an indicator (WPBX Service Indicator, WPBX In/Out Indicator, WPBX No. or WPBX mobile station information) for identifying a private mobile network subscriber, and when the mobile switching system 103 interprets the called number, in the case that a feature code is included in the called number, the mobile switching system 103 recognizes a private mobile network call and interprets a GT code included in the called number to identify the corresponding private branch exchange (PBX) 107.

[48] The called number of the private mobile network call has, for example, a feature code (#) + a GT code (NNNN) + a number (MMMM) such as '#NNNN-MMMM'.

[49] More preferably, the called number of the private mobile network call has, for example, a feature code (#) + a number (MMMM) such as '#MMMM'. The GT code for identifying the private branch exchange (PBX) may be analyzed using information stored in the VLR subscriber DB of a calling terminal. Thus, in the case that the called number is designated in the type of a feature code (#) + a number (MMMM), a number inputting operation of a service subscriber can be simplified.

[50] Here, the feature code '#' is assigned so that the mobile switching system 103 recognizes a private mobile network call, and may be replaced by '*' and '#*', and the feature code may have other variations.

[51] In the case that a called terminal receives a CNIP (Calling Number Identification

Presentation) service, if the calling number with the feature code is transmitted to the called terminal, it is convenient to inform the called terminal of receipt of a private mobile network call. For example, in the case that the calling number is KKKK or NNNN-KKKK, a call processing is performed so that #KKKK or #NNNN-KKKK is displayed on the called terminal.

[52] The private branch exchange (PBX) 107 is linked to and interworks with the mobile switching system 103 and PSTN 109 so that the mobile switching system 103 performs a private mobile network call processing.

[53] The private location register (PBX-HLR/VLR) 108 forms a private mobile network

(WPBX) with the private branch exchange (PBX) 107, and in response to a request of the mobile switching system 103, provides the mobile switching system 103 with an interpreted information of called/calling numbers, so that the mobile switching system 103 performs a private mobile network call processing.

[54] The private location register (PBX-HLR/VLR) 108 is linked to the signal transfer point (STP) 102 to perform No. 7 signaling, and provides an HLR function for performing registration of a private mobile network subscriber (matching of a mobile communication number with a telephone number or an additional service) and a subscriber location information management and a VLR function for performing a visitor location registration.

[55] FIG. 4 is a view illustrating a configuration of a private mobile network integration service system according to a second embodiment of the present invention.

[56] Referring to FIG. 4, the private mobile network integration service system according to the second embodiment of the present invention includes a private branch exchange (PBX) 107 connected to a mobile switching system 103 of a public land mobile network (PLMN), an exclusive location register/service control point (XLR-SCP) 110 connected to a signal transfer point (STP) 102 of the public land mobile network (PLMN) for serving as a call setup management device, and a subscriber registration device 114 interworking with a home location register (HLR) 100 of the public land mobile network (PLMN) and the exclusive location register/ service control point (XLR-SCP) 110.

[57] A short message service center (SMSC) 112 may be further connected to the signal transfer point (STP) 102. And, a subscriber DB management business type SMSC 113 may be connected to the exclusive location register/service control point (XLR-SCP) 110 and the SMSC 112 over the Internet 111.

[58] The exclusive location register/service control point (XLR-SCP) 110 provides the mobile switching system 103 with information for call processing. That is, in response to a request of the mobile switching system 103, the exclusive location register/service control point (XLR-SCP) 110 provides the mobile switching system 103 with an interpreted information of called/calling numbers, so that a private mobile network call processing is performed. For this purpose, the exclusive location register/service control point (XLR-SCP) 110 interprets a GT code included in the called number routed from the mobile switching system 103 to identify the corresponding private branch exchange (PBX) 107. Alternatively, the exclusive location register/service control point (XLR-SCP) 110 may utilize the calling number routed from the mobile switching system 103 to identify the corresponding private branch exchange (PBX) 107 of the called number.

[59] The exclusive location register/service control point (XLR-SCP) 110 is linked to the signal transfer point (STP) 102 to perform No. 7 signaling, and performs exclusive location registration, subscriber authentication and intelligent network call processing.

[60] The mobile switching system 103 recognizes that the above-mentioned feature code is included in the called number, requests a routing information for call setup to the home location register (HLR) 100 of the public land mobile network (PLMN), and requests a call setup to the exclusive location register/service control point (XLR-SCP) 110 corresponding to the routing information provided from the home location register (HLR) 100. And, the mobile switching system 103 receives the called number interpreted by the exclusive location register/service control point (XLR-SCP) 110 and performs a call processing by utilizing only the public land mobile network (PLMN) or interworking with the corresponding private branch exchange (PBX) 107.

[61] FIG. 5 is a view illustrating a configuration of a private mobile network integration service system according to a third embodiment of the present invention.

[62] Referring to FIG. 5, the private mobile network integration service system according to the third embodiment of the present invention includes a private branch exchange (PBX) 107 connected to a mobile switching system 103 of a public land mobile network (PLMN), a service control point (SCP) 115 connected to a signal transfer point (STP) of the public land mobile network (PLMN) for serving as a call setup management device, and a subscriber registration device 114 interworking with a home location register (HLR) 100 of the public land mobile network (PLMN).

[63] A short Message Service Center (SMSC) 112 may be further linked to the signal transfer point (STP) 102. And, an SMS web client 116 may be connected to the SMSC 112 over the Internet 111.

[64] The service control point (SCP) 115 provides the mobile switching system 103 with information for call processing. In other words, in response to a request of the mobile switching system 103, the service control point (SCP) 115 provides an interpreted information of called/calling numbers to the mobile switching system 103, so that the mobile switching system 103 performs a private mobile network call processing. For this purpose, the service control point (SCP) 115 interprets a GT code included in the called routed from the mobile switching system 103 to identify the corresponding private branch exchange (PBX) 107. Alternatively, the service control point (SCP) 115 may utilize the calling number routed from the mobile switching system 103 to identify the corresponding private branch exchange (PBX) 107 of the called number.

[65] The service control point (SCP) 115 is linked to the signal transfer point (STP) 102 to perform No. 7 signaling, and provides a service control function such as DB retrieval or routing information interpretation.

[66] The mobile switching system 103 recognizes that the above-mentioned feature code is included in the called number, requests a routing information for call setup to the home location register (HLR) 100 of the public land mobile network (PLMN), and requests a call setup to the service control point (SCP) 115 corresponding to the routing information provided from the home location register (HLR) 100. And, the mobile switching system 103 receives the called number interpreted by the service control point (SCP) 115, and performs a call processing by utilizing only the public land mobile network (PLMN) or interworking with the corresponding private branch exchange (PBX) 107.

[67] The above-mentioned private mobile network integration service system should have an HLR subscriber DB, a VLR subscriber DB, an SCP subscriber DB and a PBX HLR/VLR subscriber DB. Here, preferably the HLR subscriber DB, the VLR subscriber DB and the SCP subscriber DB store data elements, for example ESN, IMSI, Serial No., WPBX Service Indicator, WPBX In/Out Indicator, WPBX No., WPBX mobile station information, a telephone Indicator, a camera control Indicator or a private mobile network data connection Indicator.

[68] Hereinafter, a call processing is described according to the present invention.

[69] First, FIGs. 7 and 8 illustrate a call processing performed by the private mobile network integration service system according to the first embodiment of the present invention.

[70] In the call processing, a number system of a called number may have a feature code

(#) + a GT code (NNNN) + a number (MMMM), which is convenient in aspect of system incorporation, but inconvenient in aspect of subscriber's use due to many input numbers, therefore, hereinafter description is made focusing on a number system with a feature code (#) + a number (MMMM).

[71] Referring to FIG. 7, as a calling terminal sends a call (a calling number:

010-1111-2222, a called number: #3333), the mobile switching system 103 receives a call request from a mobile system (BSS or RAN) 106 (SlOO and S 102), checks a feature code of the called number and judges if the requested call is a private mobile network call (S 104).

[72] As a judgment result, in the case that a feature code '#' representing a private mobile network call does not exist, the mobile switching system 103 performs a general public land network call processing by utilizing only the public land mobile network (PLMN) (S 106), and in the case that a feature code '#' is recognized, the mobile switching system 103 retrieves the VLR subscriber DB to check if the calling terminal is in the private mobile network (WPBX) area (S 108).

[73] As a retrieval result of the VLR subscriber DB, in case the mobile switching system

103 judges that the calling terminal is not in the private mobile network (WPBX) area, the mobile switching system 103 releases a call (Sl 10).

[74] Meanwhile, in case the mobile switching system 103 judges that the calling terminal is a mobile station (MS) 1 existing in the private mobile network (WPBX) area, the mobile switching system 103 checks WPBX No. in a calling party VLR subscriber DB to determine the corresponding private branch exchange (PBX) 107 of a called terminal (Sl 12), and requests a routing information of the called/calling numbers to the private location register (PBX-HLR/VLR) 108 corresponding to the private branch exchange (PBX) 107 (S 114).

[75] In response to the routing request, the private location register (PBX-HLR/VLR)

108 performs a number interpretation (Calling: 010-1111-2222 => 2222, Called: #3333 => 010-1111-3333) (S116). [76] And, the private location register (PBX-HLR/VLR) 108 retrieves a subscriber DB to check if the interpreted called terminal is in the private mobile network (WPBX) area (S 118).

[77] In the case that the called terminal is a mobile station (MS) 2 existing in the private mobile network (WPBX) area, the private location register (PBX-HLR/VLR) 108 transmits a routing response message (Calling: #2222, Called: 010-1111-3333) to the mobile switching system 103 (S 120).

[78] The mobile switching system 103 performs a paging on the mobile station (MS) 2 corresponding to the called number (S 122), and the calling terminal and the called terminal, both of which are in the private mobile network area, are engaged through the public land mobile network (PLMN) (S 124).

[79] Meanwhile, in the case that the called terminal is a wired terminal 3 not existing in the private mobile network (WPBX) area, the private location register (PBX-HLR/VLR) 108 transmits a routing response message with the routing information (PBX No.) to the mobile switching system 103 (S 126).

[80] The mobile switching system 103 receives the routing response message (the routing information: PBX No.), and transmits a call setup message (ISUP processing) to the corresponding private branch exchange (PBX) (S 128).

[81] The private branch exchange (PBX) 107 requests a call setup to the called terminal

(S 130), and the calling terminal in the private mobile network (WPBX) and the external called terminal are engaged through an exclusive line between the mobile switching system 103 and the private branch exchange (PBX) 107 (S 132).

[82] In the first embodiment of the present invention, an MAP (Mobile Application Part) message processing is performed between the mobile switching system 103 and the private location register (PBX-HLR/VLR) 108.

[83] FIG. 8 is a view illustrating a calling processing in the case that a calling terminal is a wired terminal 3.

[84] Referring to FIG. 8, when the calling party wired terminal 3 requests a call to the private branch exchange (PBX) 107 (Calling: 3333, Called: 2222) (S200), private location register (PBX-HLR/VLR) 108 performs a number interpretation (Calling: 3333 => #3333, Called: 2222 => 010-1111-2222) (S202).

[85] Subsequently, the private location register (PBX-HLR/VLR) 108 judges if a called terminal is in the private mobile network (WPBX) area (S204).

[86] As a judgment result, in the case that the called terminal is not in the private mobile network (WPBX) area, the private branch exchange (PBX) 107 requests a call setup to a wired terminal 4 corresponding to the called number (S206), and thus the calling party wired terminal 3 in the private mobile network (WPBX) area and the called party wired terminal 4 are engaged (S208). [87] Meanwhile, in the case that the called terminal is in the private mobile network

(WPBX) area, the private branch exchange (PBX) 107 requests a call setup to the mobile switching system 103 through ISUP (ISDN User Part) protocol (S210).

[88] The mobile switching system 103 recognizes that the requested call is a private mobile network call and performs a paging on a corresponding called party mobile station 1 (S212), and thus the calling party wired terminal 3 and the called party mobile station 1, both of which are in the private mobile network (WPBX) area, are engaged (S214).

[89] FIGs. 9 and 10 illustrate a call processing performed by the private mobile network integration service system according to the second embodiment of the present invention.

[90] First, referring to FIG. 9, as a calling terminal sends a call (a calling number:

010-1111-2222, a called number: #3333), the mobile switching system 103 receives a call request from a mobile system (BSS or RAN) 106 (S300 and S302), recognizes a feature code '#' of the called number, and requests a call setup to the home location register (HLR) 100 for an intelligent network call processing (Calling: 010-1111-2222, Called: #3333, mobile station information) (S304).

[91] The home location register (HLR) 100 transmits a call setup response message with a routing information of the corresponding exclusive location register/service control point (XLR-SCP) 110 to the mobile switching system 103 (S306).

[92] The mobile switching system 103 receives the call setup response message, and requests a call setup to the corresponding exclusive location register/service control point (XLR-SCP) 110 (Calling: 010-1111-2222, Called: #3333, mobile station information) (S308).

[93] The exclusive location register/service control point (XLR-SCP) 110 judges if the setup requested call is a private mobile network call (S310), in the case that the setup requested call is not a private mobile network call, in response to a request of the mobile switching system 103, the exclusive location register/service control point (XLR-SCP) 110 processes other call such as a public land mobile network call (S312), and in the case that the setup requested call is a private mobile network call, checks if the calling terminal is in the private mobile network (WPBX) area (S314).

[94] As a check result, in the case that the calling terminal is not in the private mobile network (WPBX) area, the exclusive location register/service control point (XLR-SCP) 110 transmits a response message for call release to the mobile switching system 103 (S316) to release a call (S318).

[95] In the case that the calling terminal is a mobile station (MS) 1 existing in the private mobile network (WPBX) area, the exclusive location register/service control point (XLR-SCP) 110 interprets the called number and judges if the called terminal is in the private mobile network (WPBX) area (S320). Here, for interpretation of the called number, the exclusive location register/service control point (XLR-SCP) 110 checks the private mobile network (WPBX No.) of the calling terminal and searches for a mobile station number (010-1111-3333) corresponding to the called number (3333) in the subscriber DB of the private mobile network (WPBX No.). At this time, the mobile station information may be used for quick DB search.

[96] In case that it is judged that the called terminal is in the private mobile network

(WPBX) area, the exclusive location register/service control point (XLR-SCP) 110 transmits a call setup response message (Calling: #2222, Called: 010-1111-33333) to the mobile switching system 103 (S322).

[97] The mobile switching system 103 receives the call setup response message, and changes the calling and called numbers of the corresponding call to perform a paging on a corresponding called party mobile station 2 (S324), and thus the calling party mobile station 1 and the called party mobile station 2, both of which are in the private mobile network (WPBX) area are engaged (S326).

[98] Meanwhile, in case it is judged that the called terminal is not in the private mobile network (WPBX) area, the exclusive location register/service control point (XLR-SCP) 110 transmits a call setup response message with the routing information (PBX No.) to the mobile switching system 103 (S328).

[99] The mobile switching system 103 receives the call setup response message, and transmits a call setup message (ISUP processing) to the corresponding private branch exchange (PBX) (S330). The private branch exchange (PBX) requests a call setup to a corresponding wired terminal 3 (S332), and thus the calling party mobile station 1 existing in the private mobile network (WPBX) and the called party wired terminal 3 outside of the private mobile network (WPBX) are engaged (S334).

[100] FIG. 10 illustrates a call processing in the case that a calling terminal is a wired terminal 3.

[101] Referring to FIG. 10, when the calling party wired terminal 3 requests a call to the private branch exchange (PBX) 107 (Calling: 3333, Called: 2222) (S400), the private branch exchange (PBX) 107 performs a number interpretation (Calling: 3333 => #3333, Called: 2222 => 010-1111-2222) (S402).

[102] Subsequently, the private branch exchange (PBX) 107 requests a call setup

(Calling: #3333, Called: 010-1111-2222, PBX No.) to the mobile switching system 103 through ISUP protocol (S404), and the mobile switching system 103 requests a call setup (Calling: #3333, Called: 010-1111-2222, PBX No.) to the exclusive location register/service control point (XLR-SCP) 110 (S406).

[103] The exclusive location register/service control point (XLR-SCP) 110 retrieves the subscriber DB of the corresponding PBX No. to judge if a called terminal is in the private mobile network (WPBX) area (S408).

[104] As a judgment result, in the case that the called terminal is in the private mobile network (WPBX) area, the exclusive location register/service control point (XLR-SCP) 110 transmits a call setup response message (Calling: #3333, Called: 010-1111-2222) to the mobile switching system 103 (S410).

[105] The mobile switching system 103 performs a paging on a corresponding called party mobile station 1 according to the received response message (S412), and thus the calling party wired terminal 3 and the called party mobile station 1, both of which are in the private mobile network (PBX), are engaged (S414).

[106] Meanwhile, in the case that the called terminal is not in the private mobile network

(WPBX) area, the exclusive location register/service control point (XLR-SCP) 110 transmits a call setup response message with a routing information (PBX No.) to the mobile switching system 103 (S416).

[107] The mobile switching system 103 requests a call setup to the private branch exchange (PBX) 107 according to the received response message (S412), and the private branch exchange (PBX) 107 requests a call setup to a corresponding wired terminal 4, and thus the calling party wired terminal 3 existing in the private mobile network (WPBX) area and the external called party wired terminal 4 are engaged (S420 and S422).

[108] In the second embodiment of the present invention, an MAP or CAP (CAMEL Application Part) message processing is performed between the mobile switching system 103 and the exclusive location register/service control point (XLR-SCP) 110.

[109] FIG. 11 illustrates a voice call processing performed by the private mobile network integration service system according to the third embodiment of the present invention.

[110] Referring to FIG. 11, as a calling terminal requests a call (a calling number:

010-1111-2222, a called number: #3333), the mobile switching system 103 receives a call request from a mobile system (BSS or RAN) 106 (S500 and S502), recognizes a feature code '#' included in the called number, and requests a call setup to the home location register (HLR) 100 for an intelligent network call processing (Calling: 010-1111-2222, Called: #3333, mobile station information) (S504).

[I l l] The home location register (HLR) 100 transmits a call setup response message with a routing information of the corresponding service control point (SCP) 115 to the mobile switching system 103 (S506).

[112] The mobile switching system 103 receives the call setup response message, and requests a call setup to the corresponding service control point (SCP) 115 (Calling: 010-1111-2222, Called: #3333, mobile station information) (S508).

[113] The service control point (SCP) 115 judges if the setup requested call is a private mobile network call (S510), and in the case that the requested call is not a private mobile network call, in response to a request of the mobile switching system 103, the service control point (SCP) 115 processes other call such as a public land mobile network call (S512), and in the case that the setup requested call is a private mobile network call, checks if the calling terminal is in a private mobile network (WPBX) area (S514).

[114] As a check result, in the case that the calling terminal is not in the private mobile network (WPBX) area, the service control point (SCP) 115 transmits a response message for call release to the mobile switching system 103 (S516) to release a call (S518).

[115] In the case that the calling terminal is a mobile station (MS) 1 existing in the private mobile network (WPBX) area, the service control point (SCP) 115 changes the numbers (Calling: 010-1111-2222 => #2222, Called: #3333 => 010-1111-3333) (S520) and transmits a called terminal location inquiry message to the home location register (HLR) 100 (S522).

[116] The home location register (HLR) 100 transmits the called terminal location inquiry message to the mobile switching system 103 (S524), receives a corresponding called terminal location response message (mobile station information) (S526), and transmits the called terminal location response message to the service control point (SCP) 115 (S528).

[117] The service control point (SCP) 115 judges if the called terminal is in the private mobile network (WPBX) area (S530).

[118] In case it is judged that the called terminal is in the private mobile network (WPBX) area, the service control point (SCP) 115 transmits a call setup response message (Orig.: #2222, Called: 010-1111-3333) to the mobile switching system 103 (S532).

[119] The mobile switching system 103 receives the call setup response message, and changes the calling and called numbers of the corresponding call to perform a paging on a corresponding called party mobile station 2 (S534), and thus the calling party mobile station 1 and the called party mobile station 2, both of which are in the private mobile network (WPBX) area are engaged (S536).

[120] Meanwhile, in case it is judged that the called terminal is not in the private mobile network (WPBX) area, the service control point (SCP) 115 transmits a call setup response message with the routing information (PBX No.) to the mobile switching system 103 (S538).

[121] The mobile switching system 103 receives the call setup response message, and transmits a call setup message (ISUP processing) (Calling: 010-1111-2222, Called: 3333) to the corresponding private branch exchange (PBX) 107 (S540). The private branch exchange (PBX) 107 requests a call setup to a corresponding wired terminal 3 (S542), and thus the calling party mobile station 1 existing in the private mobile network (WPBX) area and the called party wired terminal 3 outside of the private mobile network (WPBX) area are engaged (S544).

[122] In the call processing, in the case that the private branch exchange (PBX) 107 is not in an interworking state, the steps S538 to S544 are not performed, and the call is released.

[123] FIG. 12 illustrates a voice call processing in the private mobile network when a calling terminal is a wired terminal 3 and the private branch exchange (PBX) 107 is in an interworking state.

[124] Referring to FIG. 12, when a calling terminal requests a call to the private branch exchange (PBX) 107 (Calling: 3333, Called: 2222) (S600), the private branch exchange (PBX) 107 changes the numbers (Calling: 3333 => #3333, Called: 2222 => 010-1111-2222) (S602).

[125] The private branch exchange (PBX) 107 requests a call setup to the mobile switching system 103 through ISUP protocol (Calling: #3333, Called: 010-1111-2222, WPBX No.) (S604), and the mobile switching system 103 obtains an SCP routing information through message exchange with the home location register (HLR) (S606 and S608).

[126] Subsequently, the mobile switching system 103 requests a call setup to the service control point (SCP) 115 (Calling: #3333, Called: 010-1111-2222, mobile station information) (S610).

[127] The service control point (SCP) 115 judges if the requested call is a private mobile network call, and in the case that the requested call is not a private mobile network call, the service control point (SCP) 115 performs other call processing (S614), and in the case that the requested call is a private mobile network call, retrieves the subscriber DB of the corresponding PBX No. and judges if a called terminal is in the private mobile network (WPBX) area (S616).

[128] As a judgment result, in the case that the called terminal is in the private mobile network (WPBX) area, the service control point (SCP) 115 transmits a call setup response message to the mobile switching system 103 (Calling: #3333, Called: 010-1111-2222) (S618).

[129] The mobile switching system 103 performs a paging on a corresponding called party mobile station 1 according to the received response message (S620), and thus the calling party wired terminal 3 and the called party mobile station 1, both of which are in the private mobile network (WPBX) area, are engaged (S622).

[130] Meanwhile, in the case that the called terminal is not in the private mobile network

(WPBX) area, the service control point (SCP) 115 transmits a call setup response message with a routing information (PBX No.) to the mobile switching system 103 (S624). [131] The mobile switching system 103 requests a call setup to the private branch exchange (PBX) 107 according to the received response message (S626), the private branch exchange (PBX) 107 requests a call setup to a corresponding wired terminal 4, and thus the calling party wired terminal 3 existing in the private mobile network (WPBX) area and the external called party wired terminal 4 are engaged (S628 and S630).

[132] In the third embodiment of the present invention, an MAP or CAP message processing is performed between the mobile switching system 103, the service control point (SCP) 115 and the home location register (HLR) 100.

[133] FIG. 13 illustrates an SMS call processing between mobile stations in the same private mobile network, performed by the private mobile network integration service system according to the third embodiment of the present invention.

[134] Referring to FIG. 13, first, a call setup for SMS transmission is performed between a calling party mobile station 1 and the SGSN type mobile switching system 103 (S700), and according to an SMS message request transmitted from the calling party mobile station 1 to the mobile switching system 103 (a calling number: 010-1111-2222, a called number: #*3333, message, mobile station information), the mobile switching system 103 requests an SMS call setup to the service control point (SCP) 115 (S702 and S704). At this time, the mobile switching system 103 recognizes that the corresponding call is a private mobile network SMS call through a feature code '#*' included in the called number and requests an SMS call setup to the service control point (SCP) 115.

[135] The service control point (SCP) 115 judges if the requested call is a private mobile network SMS call, and in the case that the requested call is not a private mobile network SMS call, the service control point (SCP) 115 performs a general call processing (S706 and S708) and judges if the calling party mobile station 1 is in the private mobile network area, in the case that the calling party mobile station 1 is not in the private mobile network area, performs a call release (S710 and S712). At this time, the service control point (SCP) 115 utilizes a calling party mobile station information of an initial DP (Detection Point) SMS to judge if the calling terminal is in the private mobile network area.

[136] Subsequently, the service control point (SCP) 115 judges if a called terminal corresponding to the called number exists (S714). As a judgment result, in the case that a corresponding called terminal does not exist, the service control point (SCP) 115 performs a call release (S716), and in the case that the corresponding called terminal exists, the service control point (SCP) 115 requests a called terminal location information to the home location register (HLR) 100 (S718).

[137] The home location register (HLR) 100 requests the called terminal location in- formation to the mobile switching system 103 (S702), and receives a called terminal location information response message provided from the mobile switching system 103 in response to the request (S722). Next, the home location register (HLR) 100 transmits the called terminal location information response message with a mobile station information of the called terminal to the service control point (SCP) 115 (S724).

[138] The service control point (SCP) 115 receives the called terminal location information response message, and judges if the called terminal is in the private mobile network area (S726). As a judgment result, in the case that the called terminal is not in the private mobile network area, the service control point (SCP) 115 performs a call release (S728), and in the case that the called terminal is in the corresponding private mobile network area, the service control point (SCP) 115 transmits an SMS connection response to the mobile switching system 103 (S730).

[139] The mobile switching system 103 receives the SMS connection response and tran smits a message for SMS transmission (a calling number: 010-1111-3333, message, if the calling/called terminals are in the private mobile network area) to the SMSC 112 (S732), and the SMSC 112 performs an SMS transmission processing and transmits an ACK message representing a normal processing to the mobile switching system 103 (S734).

[140] The mobile switching system 103 receives the ACK message and transmits an SMS transmission response message to the calling party mobile station 1 (S736), and the SMS call between the calling party mobile station 1 and the mobile switching system 103 is released (S738).

[141] FIG. 14 illustrates a data connection call processing in a private mobile intranet, performed by the private mobile network integration service system according to the third embodiment of the present invention.

[142] Referring to FIG. 14, first, a call setup is performed between a calling party mobile station 1 and the SGSN type mobile switching system 103 (S 800), and when the calling party mobile station 1 requests a data call activation to the mobile switching system 103 (S802), the mobile switching system 103 judges if a corresponding calling terminal is in the corresponding private mobile network and requests a data call generation to GGSN 117 (S804 and S806).

[143] The GGSN 117 transmits a data call generation response message to the mobile switching system 103 in response to the data call generation request (S8O8). And, the GGSN 117 requests a data call billing to a billing system 118 and receives a corresponding response message (S810 and S812).

[144] The mobile switching system 103 receives the data call generation response message, performs an RAB (Radio Access Bearer) assignment with the calling party mobile station 1 (S814), and transmits a data call activation response message to the calling party mobile station 1 (S816).

[145] After the above-mentioned steps are completed, the calling party mobile station 1 connects to a corresponding private mobile network intranet 119 via the mobile switching system 103 and the GGSN 117 to perform a data call processing (S818). At this time, the calling party mobile station 1 connects to an unique destination IP of the private mobile network intranet 119.

[146] FIGs. 15 to 17 illustrate a subscriber registration signaling processing performed according to another aspect of the present invention.

[147] First, a private mobile network integration service system of FIG. 6 for performing a subscriber registration signaling processing of FIG. 15 has the following configuration.

[148] For the subscriber registration signaling processing, a private mobile network integration service system includes a private branch exchange (PBX) 107 connected to a mobile switching system 103 of a public land mobile network (PLMN), a private location register (PBX-HLR/VLR) 108 provided at the side of the private branch exchange (PBX) 107 for providing the mobile switching system 103 with information for signaling processing, a signal transfer point (STP) 102 of the public land mobile network (PLMN), and an exclusive location register/service control point (XLR-SCP) 110 connected to the signal transfer point (STP) 102 for serving as a subscriber management device.

[149] The mobile switching system 103 includes MSC/VLR as a system for performing a main voice signaling processing in 2G and 3G and subscriber DB, SGSN/VLR as a system for performing a data processing in 3G and subscriber DB, and PDSN as a system for performing a data processing in 2G. Hereinafter, the present invention will be described focusing on the case that the MSC/VLR type mobile switching system 103 interworks with the private branch exchange (PBX) 107.

[150] And, the mobile switching system 103 includes elements for interpreting called/ calling numbers of a private mobile network call to recognize the private mobile network call when the private mobile network call is generated. Although not shown in drawings, the mobile switching system 103 includes a GT DB for storing a GT code assigned to each private branch exchange (PBX) 107, a VLR subscriber DB for storing a subscriber information with indicators (WPBX Service IND, WPBX In/Out IND, WPBX ID, and WPBX mobile station information) for identifying a private mobile network subscriber, and a code identification unit for interpreting the called number, in the case that a feature code is included in the called number, for recognizing a private mobile network call, and for interpreting a GT code included in the called number to identify the corresponding private branch exchange (PBX) 107. [151] The private branch exchange (PBX) 107 is linked to and interworks with the mobile switching system 103 and PSTN 109 so that the mobile switching system 103 performs a private mobile network call processing.

[152] The private location register (PBX-HLR/VLR) 108 forms a private mobile network

(WPBX) with the private branch exchange (PBX) 107, and provides the mobile switching system 103 with an interpreted information of the called/calling numbers in response to a request of the mobile switching system 103, so that the mobile switching system 103 performs a private mobile network call processing.

[153] The private location register (PBX-HLR/VLR) 108 is linked to the signal transfer point (STP) 102 to perform No. 7 signaling, and provides an HLR function for performing a private mobile network subscriber registration (matching of a mobile communication number with a telephone number or an additional service) and a subscriber location information management and a VLR function for performing a visitor location registration.

[154] The signal transfer point (STP) 102 serves as a transit exchange for routing No. 7 signal between the home location register (HLR) 100 of the public land mobile network (PLMN) and the mobile switching system 103 or between the mobile switching systems 103.

[155] The exclusive location register/service control point (XLR-SCP) 110 is connected to the signal transfer point (STP) 102 for registering a private mobile network subscriber, recognizing In/Out of a terminal in the public land mobile network (PLMN) and the private mobile network, and updating a public land mobile network subscriber DB and a private mobile network subscriber DB.

[156] The exclusive location register/service control point (XLR-SCP) 110 has a DB for storing basic parameters, for example WPBX ID as an unique indicator assigned to the private mobile network, SPEC indicating type or standard of system (2G, 3G or 4G), IMSI as a registered mobile communication number, a telephone existence IND, an unique number assigned in the private mobile network, a telephone number corresponding to the mobile communication number, Serial No. as a serial number of a mobile communication terminal, MSC ID as indicators for identifying a mobile switching center where a private mobile network subscriber belongs, that is obtained from the home location register (HLR) 100 using IMSI and Serial No., ESN of the mobile communication terminal, WPBX Service IND as a private mobile network service identifier, WPBX In/Out IND for controlling In/Out in the private mobile network, Cell ID as identification of a mobile station or subcell, a camera control IND for controlling On/Off of a camera in the private mobile network area, a video call control IND for controlling possibility/impossibility of a video call in the private mobile network area or a data connection IND for controlling data connection in the private mobile network area. These parameters are obtained by interworking with a subscriber DB of the home location register (HLR) 100.

[157] To recognize a movement state of a mobile communication terminal, when receiving a location registration request message, the exclusive location register/ service control point (XLR-SCP) 110 may be configured to compare a mobile station information included in LAI (Location Area ID) with a mobile station information of the subscriber DB to judge if the terminal has moved to the private mobile network or the public land mobile network (PLMN).

[158] In the case that the public land mobile network (PLMN) is a synchronous CDMA network, whenever a specific bit state of a Base ID changes (0«l), WPBX location registration is performed, and the exclusive location register/service control point (XLR-SCP) 110 may be configured to judge if the terminal has moved to the private mobile network or the public land mobile network (PLMN) through a mobile station information included in the location registration request message.

[159] And, in the case that the public land mobile network (PLMN) is a synchronous

CDMA network, at the time that a User zone stored in the terminal and a User zone transmitted from the public land mobile network (PLMN) are changed equally or differently with each other, User zone location registration is performed, and the exclusive location register/service control point (XLR-SCP) 110 may be configured to judge if the terminal has moved to the private mobile network or the public land mobile network (PLMN) through a mobile station information included in the location registration request message.

[160] Alternatively, in the case that the public land mobile network (PLMN) is a synchronous CDMA network, as a Zone number of the public land mobile network (PLMN) and a Zone number of the private mobile network are set differently with each other, whenever the Zone numbers change, WPBX location registration is performed, and the exclusive location register/service control point (XLR-SCP) 110 may be configured to judge if the terminal has moved to the private mobile network or the public land mobile network (PLMN) through a mobile station information included in the location registration request message.

[161] Meanwhile, in the case that the public land mobile network (PLMN) is an asynchronous WCDMA network, whenever a specific bit state of a Cell ID included in a message of SIB (System Information Block) type 3/4 broadcasted through an overhead channel changes, WPBX location registration is performed, and the exclusive location register/service control point (XLR-SCP) 110 may be configured to judge if the terminal has moved to the private mobile network or the public land mobile network (PLMN) through a mobile station information included in the location registration request message. [162] And, in the case that the public land mobile network (PLMN) is a synchronous

CDMA or an asynchronous WCDMA network, as LAI of the public land mobile network (PLMN) and LAI of the private mobile network are set differently with each other, whenever the LAIs change, WPBX location registration is performed, and the exclusive location register/service control point (XLR-SCP) 110 may be configured to judge if the terminal has moved to the private mobile network or the public land mobile network (PLMN) through a mobile station information included in the location registration request message.

[163] Referring to a subscriber registration signaling processing shown in FIG. 15, when a private mobile network operator inputs SPEC, IMSI, a private mobile network number, a telephone existence IND, a telephone number, Serial No., a camera control IND, a video call control IND, a data connection IND, and registration or cancellation of a subscriber using a specific registered terminal (TlO), the private location register (PBX-HLR/VLR) 108 transmits the input information to the exclusive location register/service control point (XLR-SCP) 110 to request a private mobile network subscriber registration (Tl 1). Here, the private mobile network operator can not know ESN of the terminal, and instead transmits Serial No., for a registration authentication.

[164] The exclusive location register/service control point (XLR-SCP) 110 authenticates the corresponding terminal through IMSI and Serial No., and transmits to the home location register (HLR) 100 of the public land mobile network (PLMN) a private mobile network subscriber registration request message with parameters, for example MSC ID, WPBX ID, SPEC, IMSI, a telephone existence IND, an unique number of private mobile network, a telephone number, Serial No., ESN, WPBX Service IND, WPBX In/Out IND, WPBX mobile station information, a camera control IND, a video call control IND and a data connection IND (T 12).

[165] The home location register (HLR) 100 turns on a private mobile network subscription flag of a DB of a corresponding subscriber (T13), and then transmits a private mobile network registration response message as a processing result to the exclusive location register/service control point (XLR-SCP) 110 (T 14).

[166] The exclusive location register/service control point (XLR-SCP) 110 constructs a

DB for storing parameters, for example MSC ID, WPBX ID, SPEC, IMSI, a telephone existence IND, an unique number of private mobile network, a telephone number, Serial No., ESN, WPBX Service IND, WPBX In/Out IND, WPBX mobile station information, a camera control IND, a video call control IND and a data connection IND (T 15), and transmits the private mobile network subscriber registration response message to the corresponding private location register (PBX-HLR/VLR) 108 (T16).

[167] The private location register (PBX-HLR/VLR) 108 constructs a subscriber DB for storing parameters, for example WPBX ID, SPEC, IMSI, a telephone existence IND, an unique number of private mobile network, a telephone number, Serial No., WPBX Service IND, WPBX In/Out IND, WPBX mobile station information, a camera control IND, a video call control IND and a data connection IND (T 17).

[168] The private mobile network integration service system of FIG. 4 for performing a subscriber registration signaling processing of FIG. 16 has the following configuration.

[169] To perform a subscriber registration signaling processing, the private mobile network integration service system includes the private branch exchange (PBX) 107 connected to the mobile switching system 103 of the public land mobile network (PLMN), the signal transfer point (STP) 102 of the public land mobile network (PLMN), the exclusive location register/service control point (XLR-SCP) 110 connected to the signal transfer point (STP) 102, and the subscriber registration device 114 interworking with the home location register (HLR) 100 of the public land mobile network (PLMN) and the exclusive location register/service control point (XLR-SCP) 110.

[170] As described above, the exclusive location register/service control point

(XLR-SCP) 110 registers the above-mentioned private mobile network subscriber, recognizes In/Out of a terminal in the public land mobile network (PLMN) and the private mobile network, and updates a public land mobile network subscriber DB and a private mobile network subscriber DB.

[171] And, in response to a request of the mobile switching system 103, the exclusive location register/service control point (XLR-SCP) 110 provides an interpreted information of the called/calling numbers to the mobile switching system 103, so that the mobile switching system 103 performs a private mobile network call processing. For this purpose, the exclusive location register/service control point (XLR-SCP) 110 interprets a GT code included in the called number routed from the mobile switching system 103 to identify the corresponding private branch exchange (PBX) 107. And, the exclusive location register/service control point (XLR-SCP) 110 may utilize the calling number routed from the mobile switching system 103 to identify the corresponding private branch exchange (PBX) 107 of the called number.

[172] The exclusive location register/service control point (XLR-SCP) 110 is linked to the signal transfer point (STP) 102 to perform No. 7 signaling, and performs an exclusive location registration, a subscriber authentication processing and an intelligent network call processing.

[173] The mobile switching system 103 recognizes that the above-mentioned feature code is included in the called number, requests a routing information for call setup to the home location register (HLR) 100 of the public land mobile network (PLMN), and requests a call setup to the exclusive location register/service control point (XLR-SCP) 110 corresponding to the routing information provided from the home location register (HLR) 100. And, the mobile switching system 103 receives the called number interpreted by the exclusive location register/service control point (XLR-SCP) 110 and performs a signaling processing by utilizing only the public land mobile network (PLMN) or interworking with the corresponding private branch exchange (PBX) 107.

[174] Referring to the subscriber registration signaling processing shown in FIG. 16, when a mobile network operator inputs parameters using the subscriber registration device 114, for example SPEC, IMSI, registration or cancellation, a telephone number and PBX No. of a subscriber (T20), the subscriber registration device 114 transmits a private mobile network subscriber registration request message with the parameters to the exclusive location register/service control point (XLR-SCP) 110 (T21).

[175] The exclusive location register/service control point (XLR-SCP) 110 transmits the private mobile network subscriber registration request message to the home location register (HLR) 100 to coincide the subscriber registration/cancellation with the home location register (HLR) 100 of the public land mobile network (PLMN) (T22).

[176] The home location register (HLR) 100 turns on a private mobile network subscription flag of a DB of a corresponding subscriber (T23), and then transmits a private mobile network registration response message as a processing result to the exclusive location register/service control point (XLR-SCP) 110 (T24).

[177] The exclusive location register/service control point (XLR-SCP) 110 constructs a

DB for storing parameters, for example MSC ID, WPBX ID, SPEC, IMSI, a telephone existence IND, an unique number of private mobile network, a telephone number, Serial No., ESN, WPBX Service IND, WPBX In/Out IND, WPBX mobile station information, a camera control IND, a video call control IND and a data connection IND (T25), and transmits the private mobile network subscriber registration response message to the corresponding subscriber registration device 114 (T26).

[178] The private mobile network integration service system of FIG. 5 for performing a subscriber registration signaling processing of FIG. 17 has the following configuration.

[179] To perform the subscriber registration signaling processing, the private mobile network integration service system includes the private branch exchange (PBX) 107 connected to the mobile switching system 103 of the public land mobile network (PLMN), the signal transfer point (STP) 102 of the public land mobile network (PLMN), the home location register (HLR) 100 and the service control point (SCP) 115 connected to the signal transfer point (STP) 102 for providing a function of a subscriber management device, and the subscriber registration device 114 interworking with the home location register (HLR) 100.

[180] In the same way as the above-mentioned exclusive location register/service control point (XLR/SCP) 110, the home location register (HLR) 100 and the service control point (SCP) 115 registers a private mobile network subscriber, recognizes In/Out of a terminal in the public land mobile network (PLMN) and the private mobile network, and updates a public land mobile network subscriber DB and a private mobile network subscriber DB.

[181] Here, the service control point (SCP) 115 provides the mobile switching system 103 with information for signaling processing. In other words, in response to a request of the mobile switching system 103, the service control point (SCP) 115 provides an interpreted information of the called/calling numbers to the mobile switching system 103, so that the mobile switching system 103 performs a private mobile network call processing. For this purpose, the service control point (SCP) 115 interprets a GT code included in the called number routed from the mobile switching system 103 to identify the corresponding private branch exchange (PBX) 107. And, the service control point (SCP) 115 may utilize the calling number routed from the mobile switching system 103 to identify the corresponding private branch exchange (PBX) 107 of the called number.

[182] The service control point (SCP) 115 is linked to the signal transfer point (STP) 102 to perform No. 7 signaling, and performs a service control function such as DB retrieval or routing information interpretation.

[183] The mobile switching system 103 recognizes that the above-mentioned feature code is included in the called number, requests a routing information for call setup to the home location register (HLR) 100 of the public land mobile network (PLMN), and requests a call setup to the service control point (SCP) 115 corresponding to the routing information provided from the home location register (HLR) 100. And, the mobile switching system 103 receives the called number interpreted by the service control point (SCP) 115 and performs a signaling processing by utilizing only the public land mobile network (PLMN) or interworking with the corresponding private branch exchange (PBX) 107.

[184] The above-mentioned private mobile network integration service system should have an HLR subscriber DB, a VLR subscriber DB, an SCP subscriber DB, and a PBX HLR/VLR subscriber DB. Here, preferably the HLR subscriber DB, the VLR subscriber DB and the SCP subscriber DB store data elements, for example MSC ID, WPBX ID, SPEC, IMSI, a telephone existence IND, an unique number of private mobile network, a telephone number, Serial No., ESN, WPBX Service IND, WPBX In/Out IND, WPBX mobile station information, a camera control IND, a video call control IND and a data connection IND. And, preferably the PBX HLR/VLR subscriber DB stores data elements, for example WPBX ID, SPEC, IMSI, a telephone existence IND, an unique number of private mobile network, a telephone number, Serial No., WPBX Service IND, WPBX In/Out IND, WPBX mobile station information, a camera control IND and a data connection IND. [185] Referring to the subscriber registration signaling processing shown in 17, when a mobile network operator inputs parameters using the subscriber registration device 114, for example IMSI, Serial No., registration or cancellation, a telephone number, PBX No. and a private mobile network additional service (T30), the subscriber registration device 114 transmits a private mobile network subscriber registration request message to the home location register (HLR) 100 of the public land mobile network (PLMN) (T31).

[186] The home location register (HLR) 100 constructs a DB of a corresponding subscriber for storing parameters, for example MSC ID, WPBX ID, SPEC, IMSI, a telephone existence IND, an unique number of private mobile network, a telephone number, Serial No., ESN, WPBX Service IND, WPBX In/Out IND, WPBX mobile station information, a camera control IND, a video call control IND and a data connection IND (T32), and then transmits a subscriber registration response message to the corresponding subscriber registration device 114 (T33).

[187] FIGs. 18 to 20 are schematic diagrams illustrating a terminal location registering method in a synchronous CDMA network provided according to the present invention.

[188] Referring to FIG. 18, when a mobile station (MS) moves from an area where an

MSB 3rd bit of a Base ID (16 bit) is 0 to another area where the MSB 3rd is 1, WBPX location registration is performed, so that it is recognized the mobile station (MS) moves to a private mobile network, and when the mobile station (MS) moves to the area where the MSC 3rd of the Base ID is 0 again, WBPX location registration is performed, so that it is recognized the mobile station (MS) moves to a public land mobile network.

[189] Referring to FIG. 19, when a mobile station (MS) moves from a network where

USER Zone IND = 0 to another network where USER Zone IND = 1 and USER Zone = NNNN, in the case that USER Zone IND of the network is equal to User Zone IND stored in the mobile station (MS), USER Zone registration is performed. And, after location registration, when the mobile station (MS) moves to a network where USER Zone IND = 0 or where USER ZONE IND = 1 and USER Zone ≠ NNNN, USER Zone location registration is performed to recognize a location state of the mobile station (MS).

[190] Referring to FIG. 20, when a mobile station (MS) moves from an area where REG

ZONE ≠ NN and TOTAL ZONES = 1 to another area where REG ZONE = NN and TOTAL ZONES = 1, and vice versa, Zone Based location registration is performed to recognize a location state of the mobile station (MS).

[191] FIG. 21 illustrates a terminal location registration signaling processing in a synchronous CDMA network according to the present invention.

[192] Referring to FIG. 21, when the above-mentioned location registration condition (WPBX, User zone or Zone Based location registration) is met, a mobile station (MS) 1 requests a location registration to the mobile system (BSS) 106 (TlOO). At this time, the location registration may use a Power On/Down location registration method as well as the above-mentioned three methods.

[193] The mobile system (BSS) 106 transmits the location registration request to the mobile switching system 103 (T 102), and the mobile switching system 103 transmits the location registration request message (REGNOT) to the exclusive location register/ service control point (XLR/SCP) 110 (T 104). Here, the REGNOT includes parameters, for example MIN, ESN, MSC ID, QUALCODE (Qualification Information Code), MYTYPE (System My Type Code), LAI and SYSACCTYPE (System Access Type).

[194] Subsequently, the exclusive location register/service control point (XLR/SCP) 110 transmits a location registration response message (regnot) to the mobile switching system 103 (T 106), and the mobile switching system 103 transmits the location registration response message (RegiAccept) to the corresponding mobile system (BSS) 106 (T108). At this time, it is preferable to transmit WPBX In/Out and additional service (camera control and data connection control of the mobile station (MS) 1) information together.

[195] The mobile system (BSS) 106 transmits the location registration response message

(RegiAccept) to the corresponding mobile station (MS) 1 (TI lO).

[196] Meanwhile, with reference to the parameters included in the REGNOT, in case it is judged that the mobile station (MS) 1 has moved from the public land mobile network (PLMN) to the private mobile network or from the private mobile network to the public land mobile network (PLMN), the exclusive location register/service control point (XLR/SCP) 110 transmits a QUALDIR message to the mobile switching system 103 for updating of a private mobile network DB (Tl 12). Here, the QUALDIR message includes main parameters, for example MIN, ESN, QUALCODE and MYTYPE.

[197] The mobile switching system 103 updates a private mobile network related DB of a

VLR subscriber using the received QUALCODE, and transmits a qualdir response message to the exclusive location register/service control point (XLR/SCP) 110 (Tl 14).

[198] Alternatively, to transmit WPBX In/Out and other control state to the mobile station

(MS) 1, when a private mobile network related DB value is changed in the VLR subscriber DB, the mobile switching system 103 transmits a Feature Notification message to the mobile system (BSS) 106 (Tl 16).

[199] The mobile system (BSS) 106 transmits the Feature Notification message to the mobile station (MS) 1 (Tl 18). Thus, private mobile network service possibility is displayed on a screen of the mobile station (MS) 1 or call request of the mobile station (MS) 1 is controlled according to Indicator.

[200] Meanwhile, the exclusive location register/service control point (XLR/SCP) 110 transmits to the private location register (PBX-HLR/VLR) 108 a QUALDIR Invoke informing there is a change in a private mobile network subscriber DB (T 120). Here, preferably the exclusive location register/service control point (XLR/SCP) 110 includes Serial No. in an ESN area, so that ESN information is not transmitted to the private mobile network operator.

[201] The private location register (PBX-HLR/VLR) 108 updates a subscriber DB, and then transmits a qualdir response message to the exclusive location register/service control point (XLR/SCP) 110 (T122).

[202] The private mobile network integration system of FIG. 6 performs all of the above- mentioned steps, and the private mobile network integration system of FIG. 4 does not perform the steps T 120 and T 122.

[203] Meanwhile, the private mobile network integration system of FIG. 5 performs a signaling processing shown in FIG. 22.

[204] Referring to FIG. 22, when the above-mentioned location registration condition

(Base ID change, User zone change or REG ZONE change) is met, a mobile station (MS) 1 transmits a location registration request message to the mobile system (BSS) 106 (T150).

[205] The mobile system (BSS) 106 transmits the location registration request message to the mobile switching system 103 (T152), and the mobile switching system 103 transmits a location registration notification message (REGNOT) to the home location register (HLR) 100 (T154). Here, the REGNOT includes parameters, for example MIN, ESN, MSC ID, QUALCODE, MYTYE, LAI and SYSACCTYPE.

[206] The home location register (HLR) 100 compares LAI information included in the location registration request message with WPBX mobile station information in the DB to determine WPBX In/Out (T156), and transmits a location registration response message (regnot) to the mobile switching system 103 (T158), and the mobile switching system 103 transmits the location registration response message (RegiAccount) to the corresponding mobile system (BSS) 106 (T160). At this time, it is preferable to transmit WPBX In/Out and other additional service (camera control of the mobile station (MS) 1) information together.

[207] The mobile system (BSS) 106 transmits the location registration response message

(RegiAccount) to the corresponding mobile station (MS) 1 (T 162).

[208] Alternatively, to transmit the WPBX In/Out and other control state to the mobile station (MS) 1, when a private mobile network related DB value is changed in the VLR subscriber DB, the mobile switching system 103 transmits a Feature Notification message to the mobile system (BSS) 106 (T164). [209] The mobile system (BSS) 106 transmits the Feature Notification message the mobile station (MS) 1 (T 166). Thus, a private mobile network service possibility is displayed on a screen of the mobile station (MS) 1 or call request of the mobile station (MS) 1 is controlled according to Indicator.

[210] FIG. 23 illustrates a signaling processing in which the MSC/VLR type mobile switching system 103 determines WPBX In/Out. In this case, the mobile switching system 103 constructs a DB for storing a mobile station information according to WPBX (T151), and compares a mobile station information included in the DB with a mobile station information included in the location registration request message to control the WPBX In/Out and other additional service.

[211] Referring to FIG. 23, a mobile station (MS) 1 transmits a location registration reqeust message due to movement between mobile switching centers, power on/off or timer operation, and the mobile system (BSS) 106 transmits the location registration request message to the mobile switching system 103 (T153 and T155).

[212] The mobile switching system 103 transmits the location registration request message to the home location register (HLR) for generation/change of the subscriber DB (T157), and the home location register (HLR) compares MSC information included in the location registration request message with MSC ID registered in a private mobile network subscriber profile (T 159), in the case that they are not equal to each other, transmits a general location registration response message (T165), and in the case that they are equal to each other, transmits a location registration response message including a general location registration response information and besides WPBX Service IND and WPBX No. to inform that the mobile station (MS) 1 has entered the mobile switching system 103 area capable of a subscriber service (T161).

[213] The mobile switching system 103 manages the subscriber DB to activate a private mobile network function, and manages the mobile station information of the corresponding WPBX No. (T 163).

[214] And, the mobile switching system 103 transmits the location registration response message to the mobile station (MS) 1 via the mobile system (BSS) 106 (T167). In response to the message, the mobile station (MS) 1 transmits to the mobile system (BSS) 106 a location registration request message according to the location registration condition of the private mobile network (T169), and the mobile system (BSS) 106 transmits the location registration request message to the mobile switching system 103 (T171).

[215] The mobile switching system 103 compares a mobile station information (BASE

ID) included in the location registration request message with a WPBX mobile station information DB (T 173). As a comparison result, in the case that the mobile station information (BASE ID) belongs to the WPBX mobile station information DB, the mobile switching system 103 transmits to the mobile station (MS) 1 a subscriber state notification message (FNM: Feature Notification Msg.) for controlling WPBX In/Out and an additional function (T 175).

[216] Subsequently, the mobile switching system 103 transmits the location registration response message to the mobile station (MS) 1 via the mobile system (BSS) 106 (T 177). In the case that the mobile station information (BASE ID) included in the location registration request message does no belong to the WPBX mobile station information DB in the step T 177, the step T 175 is not performed.

[217] FIGs. 24 and 25 are schematic views illustrating a terminal location registering method in an asynchronous WCDMA network provided according to the present invention.

[218] Referring to FIG. 24, in the case that the public land mobile network (PLMN) is an asynchronous WCDMA network, whenever a specific bit value of a Cell ID included in a message of SIB (System Information Block) type 3/4 broadcasted through an overhead channel changes (0«l), a location registration is performed, and in an initial opening, the mobile station (MS) should provide On/Off function of a private mobile network function, and thus location registration is performed only on a mobile station (MS) with the private mobile network function turned on, so that system load caused by location registration is minimized.

[219] Referring to FIG. 25, LAI of the private mobile network and LAI of the public land mobile network are set differently with each other, and as the LAIs change according to movement of a mobile station (MS), location registration is automatically performed to check WPBX In/Out.

[220] FIG. 26 is a flow chart illustrating a terminal location registration signaling processing method in an asynchronous WCDMA network performed according to the present invention.

[221] Referring to FIG. 26, 1 when the above-mentioned location registration condition is met, a mobile station (MS) transmits a location information update message (LU) to the mobile system 106 (T200).

[222] The mobile system 106 transmits the location information update message (LU) to the mobile switching system 103 (T202), and the mobile switching system 103 transmits a location information registration request (UPL) to the home location register (HLR) 100 (T204).

[223] The home location register (HLR) 100 transmits a location information registration response (upl) to the mobile switching system 103 (T206). Here, in the case of the system shown in FIG. 5, the home location register (HLR) 100 judges WPBX In/Out and transmits the response.

[224] The mobile switching system 103 transmits a location information registration request (NOTE-NM-EVENT) to the exclusive location register/service control point (XLR/SCP) 110 (T208).

[225] The exclusive location register/service control point (XLR/SCP) 110 judges WPBX

In/Out, updates a terminal DB based on IMSI and Cell ID (T210), and transmits a location information registration response (note-mm-event) to the mobile switching system 103 (T212).

[226] The mobile switching system 103 transmits a location information update response

(LU accept) to the mobile system 106 (T214), and at this time, it is preferable to transmit WPBX In/Out and other additional service (camera control of the mobile station (MS) 1 and otherwise) together.

[227] The mobile system 106 transmits the location information update response (LU accept) to the mobile station (MS) 1 (T216).

[228] Alternatively, to transmit the WPBX In/Out and other control state to the mobile station (MS) 1, when a private mobile network related DB value is changed in the VLR subscriber DB, the mobile switching system 103 transmits a GMM (GPRS Mobility Management) message to the mobile station (MS) 1 (T218). At this time, as shown in FIG. 29, the GMM message defines control bits on a sub-parameter, LSA ID (consisting of 24 bits in whole) to provide the mobile station (MS) 1 with a control function of private mobile network service possibility and an additional function.

[229] To provide the private location register (PBX-HLR/VLR) 108 with the location information of the mobile station (MS) 1, the exclusive location register/service control point (XLR/SCP) 110 transmits a location registration request message to the private location register (PBX-HLR/VLR) 108 (T220), and the private location register (PBX-HLR/VLR) 108 updates the location information of the mobile station (MS) 1 and then transmits a location registration response message to the exclusive location register/service control point (XLR/SCP) 110 (T222).

[230] With regard to a terminal location registration signaling processing in an asynchronous WCDMA network, the private mobile network integration system of FIG. 5 performs a signaling processing shown in FIG. 27.

[231] Referring to FIG. 27, when the above-mentioned registration condition (Cell ID change or LAI change) is met, a mobile station (MS) 1 transmits a location information update message to the mobile system (BSS) 106 (T250).

[232] The mobile system (BSS) 106 transmits the location information update message to the mobile switching system 103 (T252), and the mobile switching system 103 transmits a location registration request (UPL) to the home location register (HLR) 100 (T254).

[233] The home location register (HLR) 100 compares LAI information included in the location registration request with a WPBX mobile station information in the DB to determine WPBX In/Out (T256), and transmits a location registration response (upl) to the mobile switching system 103 (T258). Here, the home location register (HLR) 100 should judge the WPBX In/Out of the mobile station (MS) 1, and transmits the response.

[234] The mobile switching system 103 transmits a location information update response

(LU Accept) to the corresponding mobile system (BSS) 106 (T260). At this time, it is preferable to transmit the WPBX In/Out and other additional service (camera control of the mobile station (MS) 1) information together.

[235] The mobile system (BSS) 106 transmits the location information update response

(LU Accept) to the corresponding mobile station (MS) 1 (T262).

[236] Alternatively, to transmit the WPBX In/Out and other control state to the mobile station (MS) 1, when a private mobile network related DB value is changed in the VLR subscriber DB, the mobile switching system 103 transmits a GMM message to the mobile station (MS) 1 (T264). At this time, as shown in FIG. 29, the GMM message defines control bits on a sub-parameter, LSA ID (consisting of 24 bits in whole) to provide the mobile station (MS) 1 with a control function of private mobile network service possibility and an additional function.

[237] FIG. 28 illustrates a signaling processing in which the MSC/VLR or SGSN/VLR type mobile switching system 103 determines the WPBX In/Out. In this case, the mobile switching system 103 constructs a DB for storing a mobile station information according to WPBX (T251), and whenever location registration is performed, the mobile switching system 103 compares a mobile station information according to WPBX with a mobile station information list included in the DB to control the WPBX In/Out and other additional service. To control the WPBX In/Out and other additional service, various techniques such as a GMM Info message or an MM Info message may be used, however LSA ID (Localized Service Area) of the GMM Info message was used in this processing.

[238] Referring to FIG. 28, a wireless telephone (UE) 1 transmits a location registration message according to movement between mobile switching centers, power on/off or timer operation, and the mobile system (RAN) 106 transmits the location registration request message to the mobile switching system 103 (T253 and T255).

[239] The mobile switching system 103 transmits the location registration request message to the home location register (HLR) for generation/change of the subscriber DB (T257), and the home location register (HLR) compares an MSC information included in the location registration request message with an MSC ID registered in a mobile network subscriber profile (T259), in the case that they are not equal to each other, transmits a general location registration response message (T265), and in the case that they are equal to each other, transmits a location registration response message including a general location registration response information and besides WPBX Service IND and WPBX No. to inform that the wireless telephone (UE) 1 has entered the mobile switching system 103 area capable of a subscriber service (T261).

[240] The mobile switching system 103 manages the subscriber DB to activate a private mobile network function, and manages the mobile station information of the corresponding WPBX No. (T263).

[241] And, the mobile switching system 103 transmits the location registration response message to the wireless telephone (UE) 1 via the mobile system (RAN) 106 (T267). In response to the message, the wireless telephone (UE) 1 transmits to the mobile system (RAN) 106 a location registration request message according to the location registration condition of the private mobile network (T269), and the mobile system (RAN) 106 transmits the corresponding location registration request message to the mobile switching system 103 (T271).

[242] The mobile switching system 103 compares a mobile station information (BASE

ID) included in the location registration request message with a WPBX mobile station information DB (T273). As a comparison result, in the case that the mobile station information (BASE ID) belongs to the WPBX mobile station information DB, the mobile switching system 103 transmits to the wireless telephone (UE) 1 a GMM Info message for controlling WPBX In/Out and an additional function (T275). The wireless telephone (UE) 1 controls a terminal function according to each control bit of LSA ID in the GMM Info message.

[243] Subsequently, the mobile switching system 103 transmits a location registration response message to the wireless telephone (UE) 1 via the mobile system (RAN) 106 (T277). In the case that the mobile station information (BASE ID) included in the location registration request message does not belong to the WPBX mobile station information DB in the step T273, the step T275 is not performed.

[244] FIGs. 30 to 35 are view illustrating a call processing for informing a traffic state of a called terminal, performed according to another aspect of the present invention.

[245] First, the private mobile network integration service system of FIG. 6 for performing a call processing step in FIGs. 30 and 31 has the following configuration.

[246] For providing a traffic state information, the private mobile network integration service system includes a private branch exchange (PBX) 107 connected to a mobile switching system 103 of a public land mobile network (PLMN), and a private location register (PBX-HLR/VLR) 108 as a call processing management device in a private mobile network for processing registration, authentication and WPBX In/Out of a private mobile network subscriber and providing the mobile switching system 103 with information for traffic checking and call processing.

[247] The public land mobile network (PLMN) provides a mobile station (MS) with a synchronous CDMA (Code Division Multiple Access) or asynchronous WCDMA (Wideband Code Division Multiple Access) type mobile communication service, and as well known, includes a home location register (HLR) 100, a plurality of mobile switching systems 103 connected to the home location register (HLR) 100, a plurality of base station controllers (BSCs (Base Station Controllers) or RANs (Radio Access Networks)) 104 connected to the mobile switching systems 103, a plurality of base stations (BTSs (Base Transceiver Stations) or Node Bs) 105, and a signal transfer point (STP) 102 for signal exchange.

[248] The signal transfer point (STP) 102 serves as a transit exchange for routing No. 7 signal between the home location register (HLR) 100 and the mobile switching system 103 or between the mobile switching systems 103. An exclusive location register/ service control point (XLR-SCP) 110 for location registration processing may be connected to the signal transfer point (STP) 102.

[249] The mobile switching system 103 includes MSC/VLR as a system for performing a main voice call processing in 2G and 3G and subscriber DB, SGSN/VLR as a system for performing a data processing in 3G and subscriber DB, and PDSN as a system for performing a data processing in 2G. Hereinafter, the present invention will be described focusing on the case that the MSC/VLR type mobile switching system 103 interworks with the private branch exchange (PBX) 107.

[250] The mobile switching system 103 receives an interpreted information of called/ calling terminals from the private location register (PBX-HLR/VLR) 108, checks a traffic state of the called terminal, and transmits a busy state of the called terminal to the calling terminal.

[251] For this purpose, the mobile switching system 103 interprets a called number, in the case that a feature code is included in the called number, interprets a GT code included in the called number to identify the corresponding private branch exchange (PBX) 107, requests a routing to the private location register (PBX-HLR/VLR) 108 corresponding to the private branch exchange (PBX) 107, and receives a response message to the request.

[252] The mobile switching system 103 includes elements for interpreting called/calling numbers of a private mobile network call to recognize the private network call when the private mobile network call is generated. Although not shown in drawings, the mobile switching system 103 includes a GT DB for storing a GT code assigned to each private branch exchange (PBX) 107, and a VLR subscriber DB for storing a subscriber information with indicators for identifying a private mobile network subscriber (WPBX Service Indicator, WPBX In/Out Indicator, WPBX No. and WPBX mobile station information).

[253] A called number of a private mobile network call has, for example, a feature code (#) + a GT code (NNNN) + a number (MMMM) such as '#NNNN-MMMM'.

[254] More preferably, the called number of the private mobile network call has, for example, a feature code (#) + a number (MMMM) such as '#MMMM'. The GT code for identifying the private branch exchange (PBX) may be analyzed using information stored in the VLR subscriber DB of the calling terminal, and thus a call processing is performed by identifying the private branch exchange (PBX) of the called terminal. As such, in the case that the called number is designated in the type of a feature code (#) + a number (MMMM), a number inputting operation of a service subscriber can be simplified.

[255] Here, the feature code '#' is assigned so that the mobile switching system 103 recognizes a private mobile network call, and may be replaced by '*' and '#*', and the feature code may have other variations.

[256] In the case that the called terminal receives a CNIP (Calling Number Identification

Presentation) service, if the calling number with the feature code is transmitted to the called terminal, it is convenient to inform the called terminal of receipt of a private mobile network call. For example, in the case that the calling number is KKKK or NNNN-KKKK, a call processing is performed so that #KKKK or #NNNN-KKKK is displayed on the called terminal

[257] The private branch exchange (PBX) is linked to and interworks with the mobile switching system 103 and PSTN 109 so that the mobile switching system 103 performs a private mobile network call processing.

[258] The private location register (PBX-HLR/VLR) 108 forms a private mobile network

(WPBX) with the private branch exchange (PBX) 107, and provides the mobile switching system 103 with an interpreted information of the called/calling numbers in response to a request of the mobile switching system 103 to perform traffic management and call processing of a public land mobile network call and a private mobile network call.

[259] The private location register (PBX-HLR/VLR) 108 is linked to the signal transfer point (STP) 102 to perform No. 7 signaling. The private location register (PBX-HLR/VLR) 108 basically provides an HLR function for performing a private mobile network subscriber registration (matching of a mobile communication number with a telephone number or an additional service) and a subscriber location information management and a VLR function for performing a visitor location registration.

[260] In a call processing shown in FIG. 30, a number system of a called number may have a feature code (#) + a GT code (NNNN) + a number (MMMM), which is convenient in aspect of system incorporation, but inconvenient in aspect of subscriber's use due to many input numbers, therefore, hereinafter description is made focusing on a number system with a feature code (#) + a number (MMMM).

[261] As a calling terminal requests a call (a calling number: 010-1111-2222, a called number: #3333), the mobile switching system 103 receives a call request from a mobile system (BSS or RAN) 106 (UlOO and U102), checks a feature code of the called number, and judges if the requested call is a private mobile network call (U104).

[262] As a judgment result, in the case that a feature code '#' representing a private mobile network call does not exist, the mobile switching system 103 performs a general public land network call processing by utilizing only the public land mobile network (PLMN) (U 106), and in the case that a feature code '#' is recognized, the mobile switching system 103 retrieves the VLR subscriber DB to check if the calling terminal is in a private mobile network (WPBX) area (U108).

[263] As a retrieval result of the VLR subscriber DB, in case it is judged that the calling terminal is not in the private mobile network (WPBX) area, the mobile switching system 103 releases a call (UI lO).

[264] Meanwhile, in case it is judged that the calling terminal is a mobile station (MS) 1 existing in the private mobile network (WPBX) area, the mobile switching system 103 checks WPBX No. in a calling party VLR subscriber DB to determine the private branch exchange (PBX) 107 of the called terminal (Ul 12), and requests a routing information of the called/calling numbers to the private location register (PBX-HLR/VLR) 108 corresponding to the private branch exchange (PBX) 107 (Ul 14).

[265] The private location register (PBX-HLR/VLR) 108 performs a number interpretation in response to the routing request (Calling: 010-1111-2222 => 2222, Called: #3333 => 010-1111-3333) (Ul 16).

[266] After number interpretation of the called/calling terminals, the private location register (PBX-HLR/VLR) 108 checks if the called terminal is a wired terminal and a traffic state of the called terminal (Ul 18), and in the case that a corresponding called party wired terminal 3 is busy, transmits a routing response message (busy) to the mobile switching system 103 (U120).

[267] The mobile switching system 103 receives the routing response message (busy) and informs a corresponding calling party mobile station (MS) 1 that the called party wired terminal 3 is busy (S 122).

[268] Meanwhile, in case it is judged that the called terminal is not a wired terminal in the step Ul 18, the private location register (PBX-HLR/VLR) 108 retrieves a subscriber DB to check if the interpreted called terminal is in the private mobile network (WPBX) area (U124).

[269] In the case that the called terminal is a mobile station (MS) 2 existing in the private mobile network (WPBX) area, the private location register (PBX-HLR/VLR) 108 transmits a routing response message (Calling: #2222, Called: => 010-1111-3333) to the mobile switching system 103. (U 126)

[270] The mobile switching system 103 receives the routing response message (busy), checks a traffic state of the corresponding called party mobile station 2 (U128), and in the case that the called party mobile station (MS) 2 is busy, to inform the calling party mobile station (MS) 1 that the called party mobile station (MS) 2 is busy (U 130).

[271] FIG. 31 illustrates a call processing in the case that a calling terminal is a wired terminal 3.

[272] Referring to FIG. 31, when the calling party wired terminal 3 requests a call

(Calling: 3333, Called: 2222) to the private branch exchange (PBX) 107, the private branch exchange (PBX) 107 judges a traffic state of a corresponding called party wired terminal (U202).

[273] As a judgment result, in the case that the called party wired terminal is busy, the private branch exchange (PBX) 107 transmits to the calling terminal an indicator (Busy Ind) for indicating that the called terminal is busy (U204), and the private location register (PBX-HLR/VLR) 108 checks that the called terminal is in the private mobile network and changes the called/calling numbers (Calling: 3333 => #3333, Called: 2222 => 010-1111-2222) (U206).

[274] Subsequently, the private branch exchange (PBX) 107 transmits a call setup request message (IAM) by the changed numbers to the mobile switching system 103 (U208).

[275] The mobile switching system 103 judges if the corresponding called terminal is busy (U210), and in the case that the called terminal is busy, transmits a response message to the private branch exchange (PBX) 107 (U212), and the private branch exchange (PBX) 107 transmits to the calling party wired terminal 3 a message informing that the called terminal is busy (U214).

[276] The private mobile network integration service system of FIG. 4 for performing a call processing step shown in FIGs. 32 and 33 has the following configuration.

[277] For providing a traffic state information, the private mobile network integration service system includes the private branch exchange (PBX) 107 connected to the mobile switching system 103 of the public land mobile network (PLMN), and the exclusive location register/service control point (XLR-SCP) 110 connected to the signal transfer point (STP) 102 of the public land mobile network (PLMN) as a call processing management device for providing the mobile switching system 103 with information for traffic checking and call processing.

[278] The SMSC 112 may be further linked to the signal transfer point (STP) 102. And, the subscriber DB management business type SMSC 113 may be connected to the SMSC 112 over the Internet 111, and the private mobile network integration service system may further include the subscriber registration device 114 interworking with the home location register (HLR) 100 of the public land mobile network (PLMN) and the exclusive location register/service control point (XLR-SCP) 110.

[279] The exclusive location register/service control point (XLR-SCP) 110 provides the mobile switching system 103 with a terminal information for traffic management and call processing. In other words, in response to a request of the mobile switching system 103, the exclusive location register/service control point (XLR-SCP) 110 provides an interpreted information of the called/calling numbers to the mobile switching system 103, so that the mobile switching system 103 performs traffic checking and call processing of a public land mobile network call and a private mobile network call.

[280] For this purpose, the exclusive location register/service control point (XLR-SCP)

110 interprets a GT code included in the called number routed from the mobile switching system 103 to identify the corresponding private branch exchange (PBX) 107. Alternatively, the exclusive location register/service control point (XLR-SCP) 110 may utilize the calling number routed from the mobile switching system 103 to identify the corresponding private branch exchange (PBX) 107 of the called number.

[281] The exclusive location register/service control point (XLR-SCP) 110 is linked to the signal transfer point (STP) 102 to perform No. 7 signaling, and performs an exclusive location registration processing, a subscriber authentication processing and an intelligent network call processing.

[282] The mobile switching system 103 recognizes that a feature code is included in the called number, requests a routing information for call setup to the home location register (HLR) 100 of the public land mobile network (PLMN), and requests a call setup to the exclusive location register/service control point (XLR-SCP) 110 corresponding to the routing information provided from the home location register (HLR) 100.

[283] And, the mobile switching system 103 receives the called number interpreted by the exclusive location register/service control point (XLR-SCP) 110, checks a traffic state of a called terminal, and performs a call processing by utilizing only the public land mobile network (PLMN) or interworking with the corresponding private branch exchange (PBX) 107.

[284] Referring to a call processing shown in FIG. 32, as a calling terminal requests a call

(a calling number: 010-1111-2222, a called number: #3333), the mobile switching system 103 receives a call request from a mobile system (BSS or RAN) 106 (U300 and U302), recognizes a feature code '#' included in the called number, and requests a call setup to the home location register (HLR) 100 for an intelligent network call processing (Calling: 010-1111-2222, Called: #3333, mobile station information) (U304).

[285] The home location register (HLR) 100 transmits a call setup response message with a routing information of the corresponding exclusive location register/service control point (XLR-SCP) 110 to the mobile switching system 103 (U306).

[286] The mobile switching system 103 receives the call setup response message, and requests a call setup to the corresponding exclusive location register/service control point (XLR-SCP) 110 (Calling: 010-1111-2222, Called: #3333, mobile station information) (U308).

[287] The exclusive location register/service control point (XLR-SCP) 110 judges if the setup requested call is a private mobile network call (U310), in the case that the setup requested call is not a private mobile network call, in response to a request of the mobile switching system 103, the exclusive location register/service control point (XLR-SCP) 110 processes other call such as a public land mobile network call (U312), and in the case that the setup requested call is a private mobile network call, checks if the calling terminal is in a private mobile network (WPBX) area (U314).

[288] As a check result, in the case that the calling terminal is not in the private mobile network (WPBX) area, the exclusive location register/service control point (XLR-SCP) 110 transmits a response message for call release to the mobile switching system 103 (U316) to release a call (U318).

[289] In the case that the calling terminal is a mobile station (MS) 1 existing in the private mobile network (WPBX) area, the exclusive location register/service control point (XLR-SCP) 110 interprets the called number and judges if the called terminal is in the private mobile network (WPBX) area (U320). Here, to perform an interpretation of the called number, the exclusive location register/service control point (XLR-SCP) 110 checks the private mobile network (WPBX No.) of the calling terminal and searches for a mobile station number (010-1111-3333) corresponding to the called number (3333) in the subscriber DB of the private mobile network (WPBX No.). At this time, the mobile station information may be used for quick DB search.

[290] In case it is judged that the called terminal is in the private mobile network (WPBX) area, the exclusive location register/service control point (XLR-SCP) 110 transmits a call setup response message (Calling: #2222, Called: 010-1111-33333) to the mobile switching system 103 (U322).

[291] The mobile switching system 103 receives the call setup response message, and performs a VLR retrieval using the interpreted called number and besides checks if the called terminal is busy (U324).

[292] Subsequently, the mobile switching system 103 transmits a traffic state of the called terminal to the exclusive location register/service control point (XLR-SCP) 110 (U326), and the exclusive location register/service control point (XLR-SCP) 110 judges if the called terminal is a wired terminal (U328).

[293] In the case that the called terminal is not a wired terminal, the exclusive location register/service control point (XLR-SCP) 110 transmits a traffic state of a corresponding called party mobile station 2 to the mobile switching system 103, and the mobile switching system 103 transmits a traffic state of the called party mobile station

2 to the calling party mobile station (MS) 1 (U330 and U332).

[294] Meanwhile, in the case that the called terminal is a wired terminal, the exclusive location register/service control point (XLR-SCP) 110 transmits a corresponding PBX routing information to the mobile switching system 103 (U334), and the mobile switching system 103 performs ISUP processing for call setup on the corresponding private branch exchange (PBX) 107 (U336).

[295] The private branch exchange (PBX) 107 judges if a corresponding called party wired terminal 3 is busy (U338), in the case that it is judged the called party wired terminal 3 is busy, transmits a message to the mobile switching system 103, and the mobile switching system 103 transmits the busy state of the called party wired terminal

3 to the calling party mobile station (MS) 1 (U340 and U342).

[296] FIG. 33 illustrates a calling processing in the case that a calling terminal is a wired terminal 3.

[297] Referring to FIG. 33, when the calling party wired terminal 3 requests a call to the private branch exchange (PBX) 107 (Calling: 3333, Called: 2222) (U400), the private branch exchange (PBX) 107 judges a traffic state of a called party wired terminal 4 (U402).

[298] In the case that the called party wired terminal 4 is busy, the private branch exchange (PBX) 107 transmits an indicator (Busy Ind) for indicating the busy state of the called party wired terminal 4 to the calling terminal (U404), and in the case that the called party wired terminal 4 is not busy, interprets the called/calling numbers (Calling: 3333 => #3333, Called: 2222 => 010-1111-1111) (U406).

[299] Subsequently, the private branch exchange (PBX) 107 transmits a call request message (IAM) by the interpreted called/calling numbers to the mobile switching system 103 (U408), and the mobile switching system 103 transmits a call setup to the exclusive location register/service control point (XLR-SCP) 110 (U410).

[300] The exclusive location register/service control point (XLR-SCP) 110 judges if the called party wired terminal 4 is in the private mobile network (WPBX) (U412), and in the case that the called party wired terminal 4 is in the private mobile network (WPBX), transmits a call setup response message to the mobile switching system 103 (U414).

[301] The mobile switching system 103 judges if the called party wired terminal 4 is busy

(U416), and in the case that the called party wired terminal 4 is not busy, the mobile switching system 103 performs an incoming call processing (U418), and in the case that the called party wired terminal 4 is busy, transmits a message informing the busy state of the called party wired terminal 4 to the private branch exchange (PBX) 107 (U420). And, the private branch exchange (PBX) 107 transmits the message informing the called party wired terminal 4 is busy to the calling party wired terminal 3 (U422).

[302] The private mobile network integration service system of FIG. 5 for performing a call processing shown in FIGs. 34 and 35 has the following configuration.

[303] For providing a traffic state information, the private mobile network integration service system includes the private branch exchange (PBX) 107 connected to the mobile switching system 103 of the public land mobile network (PLMN), and the service control point (SCP) 115 connected to the signal transfer point (STP) 102 as a call processing management device for providing the mobile switching system 103 with information for traffic checking and call processing.

[304] The SMSC 112 may be further linked to the signal transfer point (STP) 102. And, the subscriber DB management business type SMSC 113 may be connected to the SMSC 112 over the Internet 111, and preferably the private mobile network integration service system may further include the subscriber registration device 114 interworking with the home location register (HLR) 100 of the public land mobile network (PLMN) and the exclusive location register/service control point (XLR-SCP) 110.

[305] The service control point (SCP) 115 provides the mobile switching system 103 with a terminal information for traffic management and call processing. In other words, in response to a request of the mobile switching system 103, the service control point (SCP) 115 provides an interpreted information of called/calling numbers to the mobile switching system 103, so that the mobile switching system 103 performs traffic checking and the corresponding call processing of a public land mobile network call and a private mobile network call.

[306] For this purpose, the service control point (SCP) 115 interprets a GT code included in the called number routed from the mobile switching system 103 to identify the corresponding private branch exchange (PBX) 107. Alternatively, the service control point (SCP) 115 may utilize the calling number routed from the mobile switching system 103 to identify the corresponding private branch exchange (PBX) 107 of the called number.

[307] The service control point (SCP) 115 is linked to the signal transfer point (STP) 102 to perform No. 7 signaling, and performs an exclusive location registration processing, a subscriber authentication processing and an intelligent network call processing.

[308] The mobile switching system 103 recognizes that the above-mentioned feature code is included in the called number, requests a routing information for call setup to the home location register (HLR) 100 of the public land mobile network (PLMN), and requests a call setup to the service control point (SCP) 115 corresponding to the routing information provided from the home location register (HLR) 100. [309] And, the mobile switching system 103 receives the called number interpreted by the service control point (SCP) 115, checks a traffic state of a called terminal, and performs a call processing by utilizing only the public land mobile network (PLMN) or interworking with the corresponding private branch exchange (PBX) 107.

[310] The above-mentioned private mobile network integration service system should have an HLR subscriber DB, a VLR subscriber DB, an SCP subscriber DB, and a PBX HLR/VLR subscriber DB. Here, preferably the HLR subscriber DB, the VLR subscriber DB and the SCP subscriber DB store data elements, for example WPBX ID, SPEC, IMSI, a telephone existence IND, an unique number of private mobile network, a telephone number, Serial No., ESN, WPBX Service IND, WPBX In/Out IND, WPBX mobile station information, a camera control IND and a data connection IND. And, preferably the PBX HLR/VLR subscriber DB stores data elements, for example WPBX ID, SPEC, IMSI, a telephone existence IND, an unique number of private mobile network, a telephone number, Serial No., WPBX Service IND, WPBX In/Out IND, WPBX mobile station information, a camera control IND and a data connection IND.

[311] Referring to a call processing shown in FIG. 34, as a calling terminal requests a call

(a calling number: 010-1111-2222, a called number: #3333), the mobile switching system 103 receives a call request from the mobile system (BSS or RAN) 106 (U500 and U502), recognizes a feature code '#' included in the called number, and requests a call setup to the home location register (HLR) 100 for an intelligent network call processing (Calling: 010-1111-2222, Called: #3333, mobile station information) (U504).

[312] The home location register (HLR) 100 transmits a call setup response message with a routing information of the corresponding service control point (SCP) 115 to the mobile switching system 103 (U506).

[313] The mobile switching system 103 receives the call setup response message, and requests a call setup to the service control point (SCP) 115 (Calling: 010-1111-2222, Called: #3333, mobile station information) (U508).

[314] The service control point (SCP) 115 judges if the setup requested call is a private mobile network call (U510), and in the case that the setup requested call is not a private mobile network call, in response to a request of the mobile switching system 103, the service control point (SCP) 115 processes other call such as a public land mobile network call (U512), and in the case that the setup requested call is a private mobile network call, checks if the calling terminal is in the private mobile network (WPBX) area (U514).

[315] As a check result, in the case that the calling terminal is not in the private mobile network (WPBX) area, the service control point (SCP) 115 transmits a response message for call release to the mobile switching system 103 (U516) to release a call (U518).

[316] In the case that the calling terminal is a mobile station (MS) 1 existing in the private mobile network (WPBX) area, the service control point (SCP) 115 interprets the called number (U520). Here, the service control point (SCP) 115 checks the private mobile network (WPBX No.) of the calling terminal for performing a number interpretation of the called terminal, and searches for a mobile station number (010-1111-3333) corresponding to the called number (3333) in the subscriber DB of the private mobile network (WPBX No.). At this time, the mobile station information may be used for quick DB search.

[317] Subsequently, the service control point (SCP) 115 transmits a called terminal location inquiry message to the home location register (HLR) 100 (U522), and the home location register (HLR) 100 transmits the location inquiry message to the mobile switching system 103, receives a called terminal location response message, and transmits the called terminal location response message to the service control point (SCP) 115 (U524 and 528). Here, the called terminal location response message includes WPBX In/Out IND and mobile station information of the called terminal.

[318] The service control point (SCP) 115 receives the called terminal location response message, judges if the called terminal is in the private mobile network (WPBX) area (U530), and in the case that the called terminal is in the private mobile network (WPBX) area, transmits a call setup response message (Calling: #2222, Called: 010-1111-33333) to the mobile switching system 103 (U532).

[319] The mobile switching system 103 receives the call setup response message, and performs a VLR retrieval using the interpreted called number and besides checks a traffic state of the called terminal (U534).

[320] Subsequently, the mobile switching system 103 transmits the traffic state of the called terminal to the service control point (SCP) 115 (U536), and the service control point (SCP) 115 judges if the called terminal is a wired terminal (U538).

[321] In the case that the called terminal is not a wired terminal, the service control point

(SCP) 115 transmits a busy state of a corresponding called party mobile station (MS) 2 to the mobile switching system 103, and the mobile switching system 103 transmits the busy state of the called party mobile station (MS) 2 to the calling party mobile station (MS) 1 (U540 and U542).

[322] Meanwhile, in the case that the called terminal is a wired terminal, the service control point (SCP) 115 transmits the corresponding PBX routing information to the mobile switching system 103 (U544), and the mobile switching system 103 performs ISUP processing for call setup on the corresponding private branch exchange (PBX) 107 (U546). [323] The private branch exchange (PBX) 107 judges if the corresponding called party wired terminal 3 is busy (U548), and in the case that the called party wired terminal 3 is busy, transmits a message to the mobile switching system 103, and the mobile switching system 103 transmits the busy state of the called party wired terminal 3 to the calling party mobile station (MS) 1 (U550 and U552).

[324] Referring to a call processing shown in FIG. 35, when a calling terminal requests a call (Calling: 3333, Called:2222) to the private branch exchange (PBX) 107 (U600), the private branch exchange (PBX) 107 judges a traffic state of a called party wired terminal 4 (U602).

[325] In the case that the called party wired terminal 4 is busy, the private branch exchange (PBX) 107 transmits an indicator (Busy Ind) for indicating a busy state of the called terminal to the calling terminal (U604), and in the case that the called party wired terminal 4 is not busy, interprets the called/calling numbers (Calling: 3333 => #3333, Called: 2222 => 010-1111-2222) (U606).

[326] Subsequently, the private branch exchange (PBX) 107 transmits a call request message (IAM) by the interpreted called/calling numbers to the mobile switching system 103 (U608), and the mobile switching system 103 requests an incoming call location request to the home location register (HLR) 100 (U610).

[327] In response to the incoming call location request, the home location register (HLR)

100 transmits an incoming call response message with an SCP routing information to the mobile switching system 103 (U612).

[328] The mobile switching system 103 judges if the called terminal is in the private mobile network (WPBX) (U614), and in the case that the called terminal is not in the private mobile network (WPBX), performs a call processing on the private branch exchange (PBX) 107 (U616), and thus a call is setup between a corresponding calling party wired terminal 3 and the called party wired terminal 4 (U618).

[329] Meanwhile, in the case that the called terminal is in the private mobile network

(WPBX), the mobile switching system 103 checks a traffic state of the called terminal and judges if the called terminal is busy (U620 and U622), and in the case that the called terminal is busy, the mobile switching system 103 transmits to the private branch exchange (PBX) 107 a call setup response message informing the busy state of the called terminal (U624). And, the private branch exchange (PBX) 107 transmits to the calling party wired terminal 3 a message (Busy Ind) informing that a corresponding called party mobile station (MS) 1 is busy (U626).

[330] As described above, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description. Industrial Applicability

[331] The private mobile network integration service system and a call processing method thereof according to the present invention provide following effects.

[332] First, through direct interworking between the mobile switching system

(MSC/VLR, SGSN/VLR, PDSN) and the private branch exchange (PBX) or signal link using the signal transfer point (STP) of the public land mobile network (PLMN), the present invention minimizes the change of the conventional system in a mobile network including a synchronous CDMA, an asynchronous WCDMA or a mobile network of future 4G, thereby reducing initial investment and operation costs and activating a private mobile network (WPBX) service.

[333] Second, the present invention can integrally perform location registration/authentication, and recognition of In/Out in a terminal in the public land mobile network and the private mobile network.

[334] And, third, the present invention informs a calling terminal of a traffic state of a called party wireless/wired terminal regardless the public land mobile network and the private mobile network, thereby providing convenience in aspects of subscriber's use and system management.

Claims

[1] A private mobile network integration service system, comprising: a signal transfer point for performing a signal processing between a home location register and a mobile switching system or between mobile switching systems; a private branch exchange (PBX) connected to the mobile switching system; and a call setup management device for interpreting called/calling numbers and providing the interpreted called/calling numbers to the mobile switching system, wherein the mobile switching system performs a private mobile network call processing using the interpreted numbers.

[2] The private mobile network integration service system according to claim 1, wherein the call setup management device is a private location register that forms a private mobile network with the private branch exchange and provides a management function of registration and location of a private mobile network subscriber, and wherein the called/calling numbers are interpreted by the private location register.

[3] The private mobile network integration service system according to claim 2, wherein the mobile switching system includes: a global title database (GT DB) for storing a GT code assigned to each private branch exchange; and a VLR (Visitor Location Register) subscriber DB for storing a subscriber information with any one indicator for identifying a private mobile network subscriber, selected from the group consisting of WPBX (Wireless PABX) Service Indicator, WPBX In/Out Indicator, WPBX No. and WPBX mobile station information, and wherein the mobile switching system interprets the called number, and in the case that a feature code is included in the called number, the mobile switching system recognizes as a private mobile network call and interprets a GT code included in the called number or checks the private branch exchange where a calling terminal belongs to identify a corresponding WPBX private branch exchange of the called terminal.

[4] The private mobile network integration service system according to claim 1, wherein the call setup management device is an exclusive location register/ service control point connected to the signal transfer point, and wherein the called/calling numbers are interpreted by the exclusive location register/service control point.

[5] The private mobile network integration service system according to claim 4, wherein, when the mobile switching system checks that a feature code is included in the called number, the mobile switching system routes the called number to the exclusive location register/service control point, and the exclusive location register/service control point interprets a GT code included in the called number routed from the mobile switching system or checks the private branch exchange where the calling terminal belongs to identify a corresponding WPBX private branch exchange of the called terminal.

[6] The private mobile network integration service system according to claim 1, wherein the call setup management device is a service control point connected to the signal transfer point, and wherein the called/calling numbers are interpreted by the service transfer point.

[7] The private mobile network integration service system according to claim 6, wherein, when the mobile switching system checks that a feature code is included in the called number, the mobile switching system routes the called number to the service control point, and the service control point interprets a GT code included in the called number routed from the mobile switching system or checks the private branch exchange where a calling terminal belongs to identify a corresponding WPBX private branch exchange of the called terminal.

[8] The private mobile network integration service system according to any one of claims 3, 5 and 7, wherein the feature code is any one selected from the group consisting of '#', '*' and '#*'.

[9] The private mobile network integration service system according to claim 8, wherein, in the case that the called terminal receives a CNIP (Calling Number Identification Presentation) service, when a call processing is performed, the calling number is transmitted to the called terminal together with the feature code.

[10] The private mobile network integration service system according to claim 1, wherein the mobile switching system includes any one or at least two selected from the group consisting of MSC (Mobile Switching Center)/VLR, SGSN (Serving GPRS Support Node)/VLR and PDSN (Packet Data Serving Node).

[11] A call processing method of a private mobile network integration service system in a public land mobile network, the method comprising: a mobile switching system receiving a call request of a calling terminal and judging if the requested call is a private mobile network call; in the case that the requested call is a private mobile network call, the mobile switching system determining a private branch exchange of a called number and requesting a routing to a call setup management device corresponding to the determined private branch exchange; the call setup management device interpreting the called number and transmitting a routing response message to the mobile switching system; and in the case that a called terminal is a mobile station, the mobile switching system performing a paging by utilizing the interpreted called number, or in the case that a called terminal is a wired terminal, performing a call setup processing through the corresponding private branch exchange.

[12] The call processing method of a private mobile network integration service system according to claim 11, wherein the call setup management device is a private location register.

[13] The call processing method of a private mobile network integration service system according to claim 12, wherein the mobile switching system recognizes a call with a feature code included in the called number as a private mobile network call, and interprets a GT code included in the called number or utilizes WPBX No. of a VLR subscriber DB of the calling terminal to determine a corresponding private branch exchange of the called terminal.

[14] The call processing method of a private mobile network integration service system according to claim 13, wherein the feature code is any one selected from the group consisting of '#', '*' and '#*'.

[15] A call processing method of a private mobile network integration service system in a public land mobile network, the method comprising: a mobile switching system receiving a call request of a calling terminal; in the case that the mobile switching system recognizes a feature code is included in a called number, the mobile switching system requesting a routing information for call setup to a home location register of the public land mobile network; the mobile switching system requesting a call setup to a call setup management device corresponding to the routing information provided from the home location register; the call setup management device judging if the requested call is a private mobile network call, and in the case that the requested call is a private mobile network call, interpreting the called number and transmitting a call setup response message to the mobile switching system; and in the case that a called terminal is a mobile station, the mobile switching system performing a paging by utilizing the interpreted called number, or in the case that a called terminal is a wired terminal, performing a call setup processing through the corresponding private branch exchange.

[16] The call processing method of a private mobile network integration service system according to claim 15, wherein the call setup management device is an exclusive location register/ service control point or a service control point.

[17] The call processing method of a private mobile network integration service system according to claim 11 or 15, wherein an MAP (Mobile Application Part) or CAP (CAMEL Application Part) message processing is performed between the mobile switching system and the call setup management device, in the case of a private mobile network call between mobile stations, a traffic channel is set using the public land mobile network, and in the case of a private mobile network call between a mobile station and a wired terminal, a traffic channel is set through an exclusive line between the mobile switching system and the private branch exchange.

[18] The call processing method of a private mobile network integration service system according to claim 16, wherein the call setup management device recognizes a call with a feature code included in the called number as a private mobile network call, and interprets a

GT code included in the called number or utilizes WPBX No. of a VLR subscriber DB of the calling terminal to determine a corresponding private branch exchange of a called terminal.

[19] The call processing method of a private mobile network integration service system according to claim 18, wherein the feature code is any one selected from the group consisting of '#', '*' and '#*'.

[20] The call processing method of a private mobile network integration service system according to claim 12 or 16, wherein the mobile switching system includes any one or at least two selected from the group consisting of MSC/VLR, SGSN/VLR and PDSN.

[21] The call processing method of a private mobile network integration service system according to claim 14 or 19, wherein, in the case that the called terminal receives a CNIP service, the feature code is transmitted to the called terminal together with the calling number.

[22] A private mobile network integration service system, comprising: a signal transfer point for performing a signal processing between a home location register and a mobile switching system or between mobile switching systems; a private branch exchange connected to and interworking with the mobile switching system; and a subscriber management device connected to the signal transfer point for registering a private mobile network subscriber, recognizing In/Out of a terminal in a public land mobile network and a private mobile network, and updating a public land mobile network subscriber DB and a private mobile network subscriber DB.

[23] The private mobile network integration service system according to claim 22, wherein the subscriber management device is an exclusive location register/ service control point.

[24] The private mobile network integration service system according to claim 22, wherein, through interworking with a subscriber DB of the home location register, the subscriber management device has a DB for storing any one or at least two basic parameters selected from the group consisting of MSC ID, WPBX ID, SPEC, IMSI, a telephone existence IND, an unique number of private mobile network, a telephone number, Serial No., ESN, WPBX Service IND, WPBX In/Out IND, WPBX mobile station information, a camera control IND, a video call control IND and a data connection IND.

[25] The private mobile network integration service system according to claim 22, wherein the subscriber management device is the home location register.

[26] The private mobile network integration service system according to claim 22, wherein the subscriber management device has a DB for storing a mobile station or subcell indicator included in the private mobile network, and wherein, when receiving a location registration request message, the subscriber management device compares a mobile station information in the location registration request message with the DB and judges whether a terminal moved to the private mobile network or the public land mobile network.

[27] The private mobile network integration service system according to claim 22, wherein, in the case that the public land mobile network is a synchronous network, whenever a specific bit state of a Base ID changes, WPBX location registration is performed, and wherein the subscriber management device judges whether a terminal moved to the private mobile network or the public land mobile network through the mobile station information included in the location registration request message.

[28] The private mobile network integration service system according to claim 22, wherein, in the case that the public land mobile network is a synchronous network, at the time that a User zone stored in a terminal and a User zone transmitted by the public land mobile network are changed equally or differently with each other, User zone location registration is performed, and wherein the subscriber management device judges whether the terminal moved to the private mobile network or the public land mobile network through the mobile station information included in the location registration request message.

[29] The private mobile network integration service system according to claim 22, wherein, in the case that the public land mobile network is a synchronous network, as a Zone number of the public land mobile network and a Zone number of the private mobile network are set differently with each other, whenever the Zone numbers change, WPBX location registration is performed, and wherein the subscriber management device judges whether a terminal moved to the private mobile network or the public land mobile network through the mobile station information included in the location registration request message.

[30] The private mobile network integration service system according to claim 22, wherein, in the case that the public land mobile network is an asynchronous network, whenever a specific bit state of a Cell ID changes, WPBX location registration is performed, wherein the subscriber management device judges whether a terminal moved to the private mobile network or the public land mobile network through the mobile station information included in the location registration request message.

[31] The private mobile network integration service system according to claim 22, wherein, in the case that the public land mobile network is an asynchronous network, as LAI (Location Area ID) of the public land mobile network and LAI of the private mobile network are set differently with each other, whenever the LAIs change, WPBX location registration is performed, and wherein the subscriber management device judges whether a terminal moved to the private mobile network or the public land mobile network through the mobile station information included in the location registration request message.

[32] The private mobile network integration service system according to claim 22, wherein, in the case that the public land mobile network is a synchronous network, a parameter about registration/cancellation request of a private mobile network subscriber and possibility/impossibility of a private mobile network service is defined by QUALCODE.

[33] The private mobile network integration service system according to claim 22, wherein the mobile switching system includes any one or at least two selected from the group consisting of MSC/VLR, SGSN/VLR and PDSN.

[34] A subscriber registration signaling processing method of a private mobile network integration service system in a public land mobile network, the method comprising: when a subscriber registration information is input, a private location register transmitting a private mobile network subscriber registration request message to an exclusive location register/service control point; the exclusive location register/service control point transmitting the private mobile network subscriber registration request message to a home location register of the public land mobile network; the home location register turning on a subscription flag of a DB of a corresponding subscriber and transmitting a private mobile network registration response message to the exclusive location register/service control point; the exclusive location register/service control point constructing a private mobile network subscriber DB, and transmitting the private mobile network registration response message to the private location register; and the private location register constructing a subscriber DB.

[35] The subscriber registration signaling processing method of a private mobile network integration service system according to claim 34, wherein the registration request message transmitted from the private location register to the exclusive location register/service control point includes any one or at least two parameters selected from the group consisting of SPEC, IMSI, Serial No., registration/cancellation, WPBX ID, a camera control IND and a data connection IND.

[36] The subscriber registration signaling processing method of a private mobile network integration service system according to claim 34, wherein the exclusive location register/service control point authenticates a corresponding terminal using IMSI and Serial No.

[37] A subscriber registration signaling processing method of a private mobile network integration service system in a public land mobile network, the method comprising: when a subscriber registration information is input into a subscriber registration device interworking with a home location register and an exclusive location register/service control point, the subscriber registration device transmitting a private mobile network subscriber registration request message to the exclusive location register/service control point; the exclusive location registration/service control point transmitting the private mobile network subscriber registration request message to the home location register of the public land mobile network; the home location register turning on a subscription flag of a DB of a corresponding subscriber and transmitting a private mobile network registration response message to the exclusive location register/service control point; and the exclusive location register/service control point constructing a private mobile network subscriber DB and transmitting the response message to the subscriber registration device.

[38] A subscriber registration signaling processing method of a private mobile network integration service system in a public land mobile network, the method comprising: when a subscriber registration information is input into a subscriber registration device interworking with a home location register, the subscriber registration device transmitting a private mobile network subscriber registration request message to the home location register; and the home location register generating a corresponding subscriber DB and transmitting a private mobile network registration response message to the subscriber registration device.

[39] A terminal location registration signaling processing method of a private mobile network integration service system in a synchronous public land mobile network, the method comprising: a mobile switching system receiving a location registration request message of a calling terminal and transmitting the location registration request message to an exclusive location register/service control point; the exclusive location register/service control point transmitting a location registration response message to the mobile switching system; the mobile switching system transmitting the location registration response message to a mobile system, and the mobile system transmitting the location registration response message to the calling terminal; the exclusive location register/service control point checking location change occurrence of the calling terminal using parameters included in the location registration request message and transmitting the corresponding parameters to the mobile switching system; the mobile switching system updating a private mobile network related DB of a VLR subscriber using the parameters and transmitting a location registration response message to the exclusive location register/service control point; and the mobile switching system transmitting a feature notification message informing change of the private mobile network related DB to the mobile system, and the mobile system transmitting the feature notification message to the calling terminal.

[40] The terminal location registration signaling processing method of a private mobile network integration service system according to claim 39, further comprising: the exclusive location register/service control point transmitting the parameters informing change of a private mobile network subscriber DB to a private location register; and the private location register updating a subscriber DB and transmitting a location registration response message to the exclusive location register/service control point.

[41] The terminal location registration signaling processing method of a private mobile network integration service system according to claim 39, wherein the location registration request of the calling terminal occurs whenever a specific bit state of a Base ID changes.

[42] The terminal location registration signaling processing method of a private mobile network integration service system according to claim 39, wherein, when the location registration response message or the feature notification message is transmitted to the calling terminal, parameters for private mobile network In/Out control indication and terminal control are transmitted together.

[43] A terminal location registration signaling processing method of a private mobile network integration service system in an asynchronous public land mobile network, the method comprising: a mobile switching system receiving a location registration request message of a calling terminal and transmitting the location registration request message to a home location register of the public land mobile network; the home location register transmitting a location registration response message to the mobile switching system; the mobile switching system transmitting a location information registration request message to an exclusive location register/service control point; the exclusive location register/service control point checking private mobile network In/Out, and transmitting a location information registration response message to the mobile switching system; the mobile switching system transmitting the location information registration response message to a mobile system, and the mobile system transmitting the location information registration response message to the calling terminal; and the mobile switching system transmitting a feature notification message informing change of a private mobile network related DB to the calling terminal.

[44] The terminal location registration signaling processing method of a private mobile network integration service system according to claim 43, further comprising: the exclusive location register/service control point transmitting to a private location register a location information registration request message for providing a location information; and the private location register updating a terminal location information and transmitting a location information registration response message to the exclusive location register/service control point.

[45] The terminal location registration signaling processing method of a private mobile network integration service system according to claim 43, wherein the location registration request of the calling terminal occurs whenever a specific bit state of a Cell ID changes.

[46] The terminal location registration signaling processing method of a private mobile network integration service system according to claim 43, wherein LAI of the public land mobile network and LAI of the private mobile network are set differently with each other, and the location registration request of the calling terminal occurs whenever the LAIs change.

[47] The terminal location registration signaling processing method of a private mobile network integration service system according to claim 43, wherein, when the location registration response message, a GMM (GPRS Mobility Management) message or an MM (Mobility Management) Info message is transmitted to the calling terminal, parameters for private mobile network In/Out control indication and terminal control including camera control and data connection control are transmitted together.

[48] A terminal location registration signaling processing method of a private mobile network integration service system in a public land mobile network, the method comprising: a mobile switching system receiving a location registration request message of a calling terminal and transmitting the location registration request message to a home location register; the home location register checking location change occurrence of the calling terminal using parameters included in the location registration request message and transmitting a location registration response message to the mobile switching system; the mobile switching system updating a private mobile network related DB of a VLR subscriber using the parameters and transmitting the location registration response message to a mobile system, and the mobile system transmitting the location registration response message to the calling terminal; and the mobile switching system transmitting a feature notification message informing change of the private mobile network related DB to the mobile system, and the mobile system transmitting the feature notification message to the calling terminal.

[49] The terminal location registration signaling processing method of a private mobile network integration service system according to claim 48, wherein, in the case of a synchronous public land mobile network, when the location registration response message or the feature notification message is transmitted to the calling terminal, parameters for private mobile network In/Out control indication and terminal control including camera control and data connection control are transmitted together, and wherein, in the case of an asynchronous public land mobile network, when the location registration response message, a GMM message or an MM Info message is transmitted to the calling terminal, parameters for private mobile network In/ Out control indication and terminal control including camera control and data connection control are transmitted together.

[50] The terminal location registration signaling processing method of a private mobile network integration service system according to any one of claims 39, 43 and 48, wherein the location registration request of the calling terminal occurs at the time that a User zone stored in the calling terminal and a User zone transmitted by the public land mobile network are changed equally or differently with each other.

[51] The terminal location registration signaling processing method of a private mobile network integration service system according to any one of claims 39, 43 and 48, wherein a Zone number of the public land mobile network and a Zone number of a private mobile network are set differently with each other, and the location registration request of the calling terminal occurs whenever the Zone numbers change.

[52] A private mobile network integration service system comprising: a signal transfer point for performing a signal processing between a home location register and a mobile switching system or between mobile switching systems; a private branch exchange connected to and interworking with the mobile switching system; and a call processing management device connected to the signal transfer point for interpreting called/calling numbers when a call is requested and providing the interpreted called/calling numbers to the mobile switching system, wherein the mobile switching system receives information of called/calling terminals from the call processing management device, checks a traffic state of the called terminal and transmits a busy state of the called terminal to the calling terminal.

[53] The private mobile network integration service system according to claim 52, wherein the call processing management device further checks whether the called terminal is in a private mobile network area or a wired mobile network area and transmits a call setup information or a routing information to the mobile switching system.

[54] The private mobile network integration service system according to claim 52, wherein the call processing management device is a private location register provided at the side of the private branch exchange.

[55] The private mobile network integration service system according to claim 52, wherein the mobile switching system includes: a GT DB for storing a GT code assigned to each private branch exchange; and a VLR subscriber DB for storing a subscriber information with any one indicator for identifying a private mobile network subscriber, selected from the group consisting of WPBX Service Indicator, WPBX In/Out Indicator, WPBX No., a WPBX mobile station information and a telephone Indicator, and wherein the mobile switching system interprets the called number, and in the case that a feature code is included in the called number, the mobile switching system recognizes a private mobile network call, and interprets a GT code included in the called number or checks the private branch exchange where the calling terminal belongs to identify a corresponding WPBX private branch exchange of the called terminal.

[56] The private mobile network integration service system according to claim 52, wherein the mobile switching system includes any one or at least two selected from the group consisting of MSC/VLR, SGSN/VLR and PDSN.

[57] The private mobile network integration service system according to claim 52, wherein the call processing management device is an exclusive location register/ service control point or a service control point.

[58] A call processing method of a private mobile network integration service system in a public land mobile network, the method comprising: a mobile switching system receiving a call request of a calling terminal and judging if the requested call is a private mobile network call; in the case that the requested call is a private mobile network call, the mobile switching system determining a private branch exchange of a called number and requesting a routing to a call setup management device corresponding to the determined private branch exchange; the call setup management device interpreting the called number and transmitting a routing response message to the mobile switching system; and the mobile switching system checking a traffic state of a called terminal corresponding to the interpreted called number, and in the case that the called terminal is busy, the mobile switching system transmitting a busy state of the called terminal to the calling terminal, and in the case that the called terminal is not busy, performing a paging on the called terminal.

[59] The call processing method of a private mobile network integration service system according to claim 58, wherein, after interpreting the called number, the call processing management device checks a traffic state of a called party wired terminal and transmits a routing response message to the mobile switching system.

[60] The call processing method of a private mobile network integration service system according to claim 58, wherein the mobile switching system recognizes a call with a feature code included in the called number as a private mobile network call, and interprets a GT code included in the called number, or utilizes WPBX No. of a VLR subscriber DB of the calling terminal to determine the corresponding private branch exchange of the called terminal.

[61] A call processing method of a private mobile network integration service system in a public land mobile network, the method comprising: when a calling party wired terminal requests a call to a private branch exchange, in the case that a called terminal is a wired terminal, the private branch exchange judging and processing a traffic state of the called party wired terminal, and in the case that a called terminal is a mobile station existing in a private mobile network call, a call processing management device changing called/calling numbers; the private branch exchange requesting a call setup on the called party mobile station corresponding to the changed numbers to a mobile switching system; and the mobile switching system checking a traffic state of the called party mobile station, and in the case that the called party mobile station is busy, the mobile switching system transmitting a busy state of the called party mobile station to the private branch exchange, and in the case that the called party mobile station is not busy, performing a paging on the called party mobile station.

[62] The call processing method of a private mobile network integration service system according to claim 58 or 61, wherein the call processing management device is a private location register provided at the side of the private branch exchange.

[63] A call processing method of a private mobile network integration service system in a public land mobile network, the method comprising: a mobile switching system receiving a call request of a calling terminal, and in the case that the mobile switching system recognizes a feature code is included in a called number, requesting a routing information for call setup to a home location register of the public land mobile network; the mobile switching system requesting a call setup to a call processing management device corresponding to the routing information provided from the home location register; the call processing management device judging if the call is a private mobile network call, and in the case that the call is a private mobile network call, interpreting the called number and transmitting a call setup response message to the mobile switching system; the mobile switching system checking a traffic state of a called terminal corresponding to the interpreted called number and transmitting a busy state of the called terminal to the call processing management device; and the call processing management device checking if the called terminal is busy with a private mobile network call and transmitting the busy state of the called terminal to the mobile switching system, and in the case that the called terminal is not busy with a private mobile network call, transmitting a PBX routing information to the mobile switching system.

[64] The call processing method of a private mobile network integration service system according to claim 63, wherein, when receiving the PBX routing information, the mobile switching system performs a call setup on a corresponding private branch exchange, and the private branch exchange checks a traffic state of a called party wired terminal and provides the traffic state to the mobile switching system.

[65] The call processing method of a private mobile network integration service system according to claim 63, wherein the call processing management device is an exclusive location register/ service control point or a service control point.

[66] A call processing method of a private mobile network integration service system in a public land mobile network, the method comprising: when a calling party wired terminal requests a call to a private branch exchange, in the case that a called terminal is a wired terminal, the private branch exchange judging and processing a traffic state of the called party wired terminal, and in the case that a called terminal is a mobile station existing in a private mobile network, a private location register changing called/calling numbers; the private branch exchange requesting a call setup on the called party mobile station to a mobile switching system; the mobile switching system transmitting the call setup request message to an exclusive location register/service control point; in the case that the called terminal is in the private mobile network, the exclusive location register/service control point transmitting a call setup response message to the mobile switching system; and the mobile switching system checking a traffic state of the called terminal, and in the case that the called party mobile station is busy, the mobile switching system transmitting a busy state of the called party mobile station to the private branch exchange, and in the case that the called terminal is not busy, performing a paging on the called terminal.

[67] A call processing method of a private mobile network integration service system in a public land mobile network, the method comprising: when a calling party wired terminal requests a call to a private branch exchange, in the case that a called terminal is a wired terminal, the private branch exchange judging and processing a traffic state of the called party wired terminal, and in the case that a called terminal is a mobile station existing in a private mobile network, a private location register changing called/calling numbers; the private branch exchange requesting a call setup on the called party mobile station to a mobile switching system; the mobile switching system requesting an incoming call location to a home location register and receiving a response from the home location register; in the case that the called terminal is not in the private mobile network, the mobile switching system interworking with the private branch exchange to perform a call processing of the called party wired terminal, and in the case that the called terminal is in the private mobile network, checking a traffic state of the called party mobile station; and in the case that the called party mobile station is busy, the mobile switching system transmitting a busy state of the called terminal to the private branch exchange, and in the case that the called party mobile station is not busy, performing a paging on the called terminal.