Patent Publication Number: US-2004048610-A1

Title: Method and system for matching subscriber states in network in which public land mobile network and wired/wireless private network are interworked

Description:
CROSS REFERENCE TO RELATED APPLICATION  
     [0001] This application is a continuation-in-part of U.S. application Ser. No. 10/259,846 filed in the U.S. Patent &amp; Trademark Office on Sep. 30, 2002, U.S. application Ser. No. 10/259,846 being incorporated herein by reference. Also, this application makes reference to, incorporates the same herein, and claims priority and all benefits accruing under 35 U.S.C. §120 from the aforementioned U.S. application Ser. No. 10/259,846, filed on Sep. 30, 2002, entitled APPARATUS, METHOD AND SYSTEM FOR MATCHING SUBSCRIBER STATES IN NETWORK IN WHICH PUBLIC LAND MOBILE NETWORK AND WIRED/WIRELESS PRIVATE NETWORK ARE INTERWORKED. This application relates to a U.S. patent application Ser. No. 10/259,811, which was submitted to the U.S. Patent &amp; Trademark Office on Sep. 30, 2002, entitled APPARATUS, METHOD AND SYSTEM FOR MATCHING SUBSCRIBER STATES IN NETWORK IN WHICH PUBLIC LAND MOBILE NETWORK AND WIRED/WIRELESS PRIVATE NETWORK ARE INTERWORKED, and claims all benefits accruing under 35 U.S.C. §119 from an application entitled APPARATUS, METHOD AND SYSTEM FOR MATCHING SUBSCRIBER STATES IN NETWORK IN WHICH PUBLIC LAND MOBILE NETWORK AND WIRED/WIRELESS PRIVATE NETWORK ARE INTERWORKED earlier filed in the Korean Industrial Property Office on Sep. 28, 2001 and there duly assigned Serial No. 2001-60674. Each of the above-cited applications is incorporated herein by reference in its entirety.  
     CLAIM OF PRIORITY  
     [0002] This application makes reference to, incorporates the same herein, and claims all benefits accruing under 35 U.S.C. §119 from an application for APPARATUS, METHOD AND SYSTEM FOR MATCHING SUBSCRIBER STATES IN NETWORK IN WHICH PUBLIC LAND MOBILE. NETWORK AND WIRED/WIRELESS PRIVATE NETWORK ARE INTERWORKED earlier filed in the Korean Industrial Property Office on Sep. 28, 2001 and there duly assigned Serial No. 2001-60674 and for METHOD AND SYSTEM FOR MATCHING SUBSCRIBER STATES IN NETWORK IN WHICH PUBLIC LAND MOBILE NETWORK AND WIRED/WIRELESS PRIVATE NETWORK ARE INTER WORKED earlier filed in the Korean Industrial Property Office on Sep. 11, 2002 and there duly assigned Serial No. 2002-55150. 
    
    
     
       BACKGROUND OF THE INVENTION  
       [0003] 1. Field of the Invention  
       [0004] The present invention relates to a mobile communication system interworked with a PLMN (Public Land Mobile Network) and a wired/wireless private network, and more particularly to an apparatus, method and system for matching subscriber states of a PLMN and subscriber states of a wired/wireless private network by informing the PLMN of the subscriber states associated with the wired/wireless private network in a mobile communication system.  
       [0005] 2. Description of the Related Art  
       [0006] It is difficult for the public and private networks to be interworked with each other because a public mobile communication network and a private (or local area) mobile communication network are individually implemented. In other words, a conventional mobile communication system can provide either public mobile communication services or private mobile communication services. A subscriber of a mobile communication terminal registered in the public network cannot use the private mobile communication services. Similarly, a subscriber of a mobile communication terminal registered in the private network cannot use the public mobile communication services. Accordingly, a system, which can provide the subscriber of one mobile communication terminal with both the public and private mobile communication services, is seriously needed.  
       [0007] Copending Korean Patent Application Ser. No. 200-028172 entitled “SYSTEM AND METHOD FOR PROVIDING PUBLIC/PRIVATE MOBILE COMMUNICATION SERVICE”, filed in the Korean Industrial Property Office on May 24, 2000 by Samsung Electronics Co., Ltd. is disclosed as an example of a public and private mobile communication system, which can provide one mobile communication terminal with both public and private mobile communication services.  
       [0008] Hereinafter, an MS is a mobile station being a mobile communication terminal. An MSC, a BSC and a BTS denote a mobile switching center, a base station controller and a base station transceiver subsystem, respectively. A prefix “p” attached to “MS”, “MSC”, “BSC” or “BTS” means “private”. For convenience, the prefix “p” is used to distinguish components of the private network from components of the public network.  
       [0009] Copending Korean Patent Application Ser. No. 2000-06083 entitled “APPARATUS AND METHOD FOR PERFORMING PACKET DATA COMMUNICATION IN LOCAL-AREA RADIO INTERNET”, filed in the Korean Industrial Property Office on Sep. 28, 2000 by Samsung Electronics Co., Ltd. is disclosed as an example of enabling use of a local-area radio internet by applying a wired/wireless mobile communication system to a 3G (3 rd  generation) network.  
       [0010] As disclosed in Korean Patent Application Ser. No. 2000-060831, a paging signal is transmitted through a path of“MSC→BSC→BTS→MS” in a conventional PLMN rather than an interworking service system in which the public and private networks are interworked, and a paging response message generated by the MS is transmitted through a path of “MS→BTS→BSC→MSC” as a reverse path of the paging signal path.  
       [0011] On the other hand, a wired/wireless communication service system disclosed in Korean Patent Application Ser. No. 2000-060831 transmits a paging signal through a path of “MSC→BSC→pBSC→BTS→MS” and a paging response message generated by the MS for the public and private networks is transmitted through a path of “MS→BTS→pBSC→BSC→MSC” as a reverse path of the paging signal path. Here, the pBSC transparently transmits the paging signal where it is the public-network paging signal and therefore does not affect processing of incoming and outgoing paging signals from and to the public network in a terminal, which is located within a public and private cell area. Accordingly, the private network is compatible with the public network. Further, the BSC for the public network can be directly coupled to the BTS without the use of the pBSC. Where the paging signal from the private network is generated, the processing of the paging signal is controlled within the private network.  
       [0012] When a local-area MS located within the public and private cell area, communicates with another local-area terminal or another terminal through a PBX (another local-area terminal coupled to the PBX or another terminal coupled to a PSTN (Public Switched Telephone Network), which can be coupled to an office line of the PBX) in the wired/wireless mobile communication system, the public network generates a paging signal because the public network recognizes the fact that the corresponding terminal is in an idle state rather than the fact that the corresponding terminal is coupled to a local-area call, where the public network pages the local-area MS. However, when the terminal is coupled to the local-area call, it cannot give any response to the paging signal from the public network. Accordingly, the public network does not identify a current location of a corresponding MS and transmits a second paging signal. There is a problem in that this causes radio resources of the public network to be wasted and cannot enable a caller to exactly recognize a state of a called party. Here, the second paging signal means not only an increase of the number of paging times but also expansion of a paging zone. In other words, the number of BTSs within the paging zone when the second paging signal is transmitted can be increased more than that within the paging zone when a first paging signal is transmitted. Here, the paging zone is previously prescribed. Further, the paging performed in the public network can exceed a predetermined paging range corresponding to the public and private networks.  
       [0013] Although arbitrary ANs (Access Nodes) vary between an idle state and a busy state after the ANs coupled to a wireless private network perform data communication in a high-speed wireless data system such as 1× EV-DO (1× Evolution-Data Only), the public network does not identify the variation in the states of the ANs and determines only that the ANs are still in the idle state. In this state, if a call connection request for the arbitrary ANs is generated from the public network, the public network transmits a paging message to an ANTS (Access Network Transceiver System) because the public network determines that the arbitrary ANs are in the idle state, and the ANTS performs a paging non-response process. Such a paging non-response process causes an error in a call processing procedure and a paging message transmission process. These unnecessary processes can increase a load of the public network.  
       SUMMARY OF THE INVENTION  
       [0014] Therefore, the present invention has been made in view of the above and other problems, and it is an object of the present invention to provide a method for providing a public network with state information of ANs (Access Nodes) according to incoming call reception and outgoing call transmission in a wireless private network.  
       [0015] It is another object of the present invention to provide an apparatus, method and system for matching subscriber state information of a private network and subscriber state information of a public network by transmitting state information of terminals located within the private network to the public network in a mobile communication system interworked with the public and private networks.  
       [0016] It is another object to provide a method and system when the communication is performed between access nodes within a wireless private network, the system updates the subscriber information according to the state of the access nodes.  
       [0017] In accordance with a first aspect of the present invention, the above and other objects can be accomplished by the provision of a method for performing a call processing operation to manage state information of ANs (Access Nodes) in a high-speed wireless data system, including the steps of: when an AN coupled to a wireless private network makes a request for a call connection with another AN coupled to the wireless private network, carrying out a call connection between the ANs, providing a high-speed wireless data service for the ANs, and carrying out a call connection release after completing the high-speed wireless data service; and updating state information of the ANs according to the call connection and connection release between the ANs.  
       [0018] In accordance with a second aspect of the present invention, there is provided a method for performing a call processing operation to manage state information of ANs (Access Nodes) in a high-speed wireless data system, including the steps of: when an AN coupled to a wireless private network makes a request for a call connection with another AN coupled to the wireless private network, carrying out a call connection between the ANs and providing a high-speed wireless data service for the ANs; updating state information of the ANs to busy state information; when the high-speed wireless data service for the ANs is completed, carrying out a call connection release; and updating the state information of the ANs to idle state information according to the call connection release.  
       [0019] In accordance with a third aspect of the present invention, there is provided a method for performing a call processing operation to manage state information of ANs (Access Nodes) in a high-speed wireless data system, including the steps of: when an AN coupled to a wireless private network makes a request for a call connection with another AN coupled to the wireless private network, allowing a pANC (private Access Network Controller) to carry out a call connection between the ANs and to provide a high-speed wireless data service for the ANs; allowing the pANC to request that state information of the ANs be updated; allowing a DLR (Data Location Register) to update the state information of the ANs to busy state information according to a state information update request; when the high-speed wireless data service for the ANs is completed, carrying out a call connection release between the ANs and allowing the pANC to request that the state information of the ANs be updated; and allowing the DLR to update the state information of the ANs to idle state information according to another state information update request.  
     
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
     [0020] A more complete appreciation of the invention, and many of the attendant advantages thereof, will be readily apparent as the same becomes better understood by reference to the following detailed description when considered in conjunction with the accompanying drawings in which like reference symbols indicate the same or similar components, wherein:  
     [0021]FIG. 1 is a view illustrating a configuration and its communication path associated with a public and private mobile communication system in which the present invention can be applied;  
     [0022]FIG. 2 is an exemplary view illustrating a configuration of a public and private communication service apparatus associated with a public and private mobile communication system in which the present invention can be applied;  
     [0023]FIG. 3 is another exemplary view illustrating a configuration of a public and private communication service apparatus associated with a public and private mobile communication system in which the present invention can be applied;  
     [0024]FIG. 4 is a flow chart illustrating a method for processing a paging call signal from a public network in a public and private communication service apparatus associated with a public and private mobile communication system in which the present invention can be applied;  
     [0025]FIG. 5 is another exemplary view illustrating a configuration of a public and private communication service apparatus associated with a public and private mobile communication system in accordance with the present invention;  
     [0026]FIG. 6 is a view illustrating a structure of a table having state information of MSs (Mobile Stations) included in a visitor location register for a private network in accordance with the present invention;  
     [0027]FIG. 7 is a view illustrating a format of a paging response message in accordance with the present invention;  
     [0028]FIG. 8 is a flow chart illustrating a method for allowing a private network to process a paging call signal from a public network in accordance with the present invention;  
     [0029]FIG. 9 is a flow chart illustrating a method for allowing a private network to transmit state information of a local-area MS located within a public and private cell area to the public network in accordance with the present invention;  
     [0030]FIG. 10 is a flow chart illustrating a method for transmitting an MS state message to an MSC (Mobile Switching Center) when the private network terminates an MS call in accordance with the present invention;  
     [0031]FIG. 11 is a view illustrating a format of a new message, which is made for matching subscriber states, in accordance with the present invention;  
     [0032]FIG. 12 is a view illustrating a message in which sub-ID and sub-type data are added to a pre-existing message for matching subscriber states in accordance with the present invention;  
     [0033]FIG. 13 is a view illustrating a message in which sub-ID and sub-type data are added to a location registration message for matching subscriber states in accordance with the present invention;  
     [0034]FIG. 14 is a view illustrating a configuration of a public/private mobile communication network where the present invention is applied to a high-speed wireless data system for 1× EV-DO (1× Evolution-Data Only) ANs (Access Nodes);  
     [0035]FIG. 15 is a flow chart illustrating a call processing procedure for managing state information of ANs shown in FIG. 14; and  
     [0036]FIG. 16 shows an example of a computer including a computer-readable medium having computer-executable instructions for performing a method of the present invention. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
     [0037] A schematic configuration and a communication path of a system shown in FIG. 1 will be described. FIG. 1 has certain features related to the disclosure in Korean Patent Application Ser. No. 2000-028172.  
     [0038] Referring to FIG. 1, a public and private communication service apparatus  12  is made up of a PBX (Private Branched eXchange)  30 , a pBSC (private BSC)  40  and a CM (Call Manager)  50 . The PBX  30  includes a switch  32  and an E 1  (European subscriber line) interface  34 , and the pBSC  40  includes a pCIN (private Communication Interconnection Network)  42  and a TSB (Transcoder &amp; Selector Bank)  44 .  
     [0039] It should be understood that only internal configurations of the PBX  30  and the pBSC  40  as components necessary for explaining a communication path when the public and private mobile communication services are provided are shown in FIG. 1 and other components are omitted in FIG. 1. It is assumed that MSs  24  and  25  are registered in the public and private communication service apparatus  12  so that the MSs  24  and  25  are located within a public and private cell area and can use the private mobile communication services. Further, it is assumed that an MS  22  is located within a public cell area. Under these assumptions, a communication path (that is, a traffic channel)  5  made up of the MS  24 , a pBTS  8 -k, the pCIN  42  of the pBSC  40 , the TSB  44 , an E 1  interface  34 , the switch  32 , the TSB  44 , the pCIN  42 , the pBTS  8 -k and the MS  25 , and a reverse communication path of the communication path  5  are examples of the case where the private mobile communication services are provided. Further, a communication path (that is, a traffic channel)  9  made up of the MS  25 , the pBTS  8 -k, the pCIN  42  of the pBSC  40 , a BSC  4 -m of a PLMN  1 , an MSC  2 - 1 , the BSC  4 -m, the BTS  8 - 1  and the MS  22 , and a reverse communication path of the communication path  9  are examples of the case where the public mobile communication services are provided. The CM  50  being a main controller of the public and private communication service apparatus  12  controls the formation of the communication paths for the mobile communication services. The public and private communication service apparatus  12  provides wired communication services, IP (Internet Protocol) terminal communication services and the public and private mobile communication services. The PBX  30  supports the wired communication services and a gatekeeper (not shown) based on a VoIP (Voice over Internet Protocol) supports the IP terminal communication services. The CM  50  controls the public and private mobile communication services, that is, radio call services.  
     [0040] Now, preferred embodiments of the present invention will be described in detail with reference to the annexed drawings. In the drawings, the same or similar elements are denoted by the same reference numerals even though they are depicted in different drawings. In the following description made in conjunction with preferred embodiments of the present invention, a variety of specific elements such as concrete circuits are shown. The description of such elements has been made only for a better understanding of the present invention. Those skilled in the art will appreciate that the present invention can be implemented without using the above-mentioned specific elements. Also, in the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.  
     [0041]FIG. 2 is an exemplary view illustrating a configuration of a public and private communication service apparatus associated with a public and private mobile communication system in which the present invention can be applied.  
     [0042] In accordance with an embodiment of the present invention, the public and private communication service apparatus  12  shown in FIG. 1 provides wired communication services, IP (Internet protocol) terminal communication services and public and private mobile communication services. As shown in FIG. 2, a PBX  30  supports the wired communication services and a gatekeeper  94  supports the IP terminal communication services. A CM  50  controls the public and private mobile communication services, that is, radio call services.  
     [0043] The PBX  30 , an INIA (IP Network Interface board Assembly module)  46  included in a pBSC  40  and an LIM (LAN Interface Module)  68  included in the CM  50  are coupled to a LAN  90 . The gatekeeper  94  is further coupled to the LAN  90 . IP terminals such as a LAN-phone  92 , a web-phone and a PC (Personal Computer) are coupled to the LAN  90 .  
     [0044] The pBSC  40  performs a radio link control function, a hand off function, etc. corresponding to a BSC included in a public mobile communication system. A main controller of the pBSC  40  can be embedded as a software module in the CM  50 . The pBSC  40  includes a pCIN  42 . The pCIN  42  provides communication paths coupled to the CM  50 , a BSC  4 -m included in a PLMN  1  and a pBTS  8 -k, and a data path among components included in the pBSC  40 . In other words, the pCIN  42  analyzes a message type, a caller address and a destination address contained in a received message and then transmits a result of the analysis to a corresponding device or processor. An E 1  line is coupled between the pCIN  42  and the BSC  4 -m of the PLMN  1  and between the pCIN  42  and the pBTS  8 -k. A TSB  44  coupled to the pCIN  42  of the pBSC  40  is used to provide a mobile communication subscriber for the private network with wireless communication services. The TSB  44  performs a function of matching communication data between the PBX  30  and the pBSC  40 . The INIA  46  coupled to the pCIN  42  of the pBSC  40  supports local-area radio data services. The INIA  46  transmits a data packet to the LAN  90  using a PPP (Point to Point Protocol) server and a TCP (Transmission Control Protocol/Internet Protocol)/IP, wherein the data packet is received from an MS located within a public and private cell area.  
     [0045] A VoIP module  36  located within the PBX  30  is coupled between a switch  32  included in the PBX  30  and the LAN  90 . The VoIP module  36  provides VoIP services where the IP terminal such as the LAN-phone  92  or etc. and a wired terminal (not shown) coupled to the PBX  30  are interworked by the switch  32 .  
     [0046] The CM  50  coupled to the pBSC  40  and the LAN  90  performs a function of controlling a radio call for public and private mobile communication services. At this time, call services for the MS in the public network performs a control function so that a message can be bypassed to the MSC for the public network. The CM  50  performs a function of administrating and maintaining radio resources. However, an MSCl  2 - 1  for the public network performs resource management for the pBTS  8 -k and the CM  50  only refers to the resource management performed by the MSCl  2 - 1 . The CM  50  performs a function of loading a program in a processor for controlling pBSC resources and a PLD (Program Loaded Data). However, the loading for the pBTS  8 -k is performed by a BSM (Base Station Manager) (not shown). The CM  50  controls a wired and wireless composite function. Further, the CM  50  supports a radio SMS (Short Message Service) for the local area. Furthermore, the CM  50  supports a function of registering a subscriber in a private mobile communication network and setting functions, and performs a function of managing a VLR (Visitor Location Register) for use in roaming of the MS registered in the private mobile communication network.  
     [0047] In order to perform these functions, the CM  50  has software modules including a DCI (Data Communication Interface)  52 , a pBTMR (pBTS Message Router)  54 , a pBSC (private BSC)  56 , a pMSC (private Mobile Switching Center)  58 , a PMIC (PBX Mobile Interface Controller)  60 , an SMC (Short Message service Controller)  62 , a pVLR (private VLR)  64 , a WSM (Wireless System Manager)  66  and an LIM (LAN Interface Module)  68 . The DCI  52  is an interface module for supporting communication between the pCIN  42  of the pBSC  40  and the CM  50 . The DCI  52  supports IPC (Inter Processor Communication) through an HINA (High speed IPC Node board Assembly). The pBTMR  54  designates a path for all messages to be processed in the pBTS  8 -k. In more detail, the pBTMR  54  retrieves an internal router table, designates a control (signal) message path for providing the MS with incoming and outgoing call services (for the public and private networks) and designates a message path for maintenance services of the pBTS  8 -k. Further, the pBTMR  54  communicates with the pVLR  64 . The pBSC  56  as the main controller of the pBSC  40  controls the pBTS  8 -k. When the pMSC  58  supports the public and private mobile communication services, it is located between the pBSC  56  and the PMIC  60  and performs a function similar to a function of the MSC included in a pre-existing public mobile communication network. Further, in accordance with the embodiment of the present invention, the pMSC  58  basically processes a subscriber call, analyzes other supplementary services and processes an interface with the PBX  30 . In more detail, the pMSC  58  analyzes a service request from the subscriber, determines whether either service for a pre-existing public mobile communication network or service for the private mobile communication network must be provided in response to the service request, and processes a corresponding procedure based on a result of the determination. An interface with the pBSC  56  is based on a procedure in the public mobile communication network and uses an internal IPC. The PMIC  60  controls the wired and wireless composite function. The PMIC  60  is located within the public and private cell area. The PMIC  60  controls a call between MSs, e.g., the MSs  24  and  25  shown in FIG. 1, and a wired terminal coupled to the PBX  30 . The pMSC  58  is different from a pre-existing MSC for the public network in that the pMSC  58  cannot directly perform a switching function. The pMSC  58  as the software module does not include a switch. Thus, when the private mobile communication services are provided, the public and private communication service apparatus  12  uses the switch  32  of the PBX  30 . In accordance with the embodiment of the present invention, the PMIC  60  generates an instruction necessary for controlling the switch  32  of the PBX  30  in response to a switch control request from the pMSC  58  and transmits the instruction to a controller (not shown) included in the PBX  30 . The controller of PBX  30  performs the switching function in response to the instruction. The SMC  62  controls the SMS and acts as an SMS web server. The pVLR  64  manages subscriber information registered in the private mobile communication services, location registration information of a mobile communication subscriber for the private network and other supplementary service information. The WSM  66  performs all the administration and maintenance functions of the mobile communication services provided by the public and private communication service apparatus  12 . The WSM  66  is coupled to an operator console (not shown) for interface with an operator. The LIM  68  is a software module for communicating with the LAN  90 . The LIM  68  uses an OS (Operating System) to perform a communication function through the PMIC  60 , the SMC  62 , the pVLR  64 , the WSM  66  and the LAN  90 .  
     [0048] The pBTS  8 -k includes a PMCC (pBTS Main Controller Card)  80 , a PCC (pBTS Channel Card)  82 , a TRIC (Transmit &amp; Receive Interface Card)  84  and a PRU (private BTS Radio Unit)  86 . Since components included in the pBTS  8 -k and their functions are similar to those included in the BTS of a conventional public mobile communication system and their functions, a detailed description of the pBTS  8 -k will be omitted in this specification. The PMCC  80  performs an overall control of the pBTS  8 -k, processes a signaling message relating to call set-up and system performance, manages hardware and software, and performs resource assignment. The PCC  82  processes base-band signals on the basis of a radio communication standard. The TRIC  84  performs transmission and reception interface between the PRU  86  and the PCC  82 . The PRU  86  is an RF (Radio Frequency) module. The PRU  86  is coupled to a plurality of antennas ANTl-ANTn.  
     [0049] The public and private communication service apparatus  12  provides the wired services, the IP terminal services and the public and private mobile communication services. Hereinafter, a detailed description will be given of the public and private mobile communication services performed by the public and private communication service apparatus  12 .  
     [0050] The public and private communication service apparatus  12  provides the MSs registered in the CM  50  with wired and wireless composite function services as well as wireless communication services. The wireless communication services include outgoing call transmission services, incoming call reception services, call transfer service, call forwarding services, local-area radio data services and local-area radio SMS services. The wired and wireless composite function services include a service for simultaneously informing the wired terminal and a corresponding MS of an incoming call when the communication service apparatus  12  receives the call incoming into the wired terminal.  
     [0051] The term public and private mobile communication system means that it can provide public and private mobile communication services. Accordingly, all the messages incoming into the communication service apparatus  12  are analyzed and a control (signal) message corresponding to the public mobile communication network is transmitted to the BSC for the public network and a control (signal) message corresponding to the private mobile communication network is routed to the modules within the CM  50 . The pBTMR  54  included in the CM  50  performs a routing function. Where an outgoing call transmission event, an incoming call reception event, a location registration event or an SMS service event occurs, the pBTMR  54  analyzes a message corresponding to the event and designates a routing path associated with the message. The pBTMR  54  is equipped with a router table, which has routing information mapped to each event. The message is transmitted to a corresponding device and module using the router table.  
     [0052]FIG. 3 is another exemplary view illustrating a configuration of a public and private communication service apparatus associated with a public and private mobile communication system in which the present invention can be applied.  
     [0053] As shown in FIG. 3, the public and private communication service apparatus is made up of a BTS  200 , a BSC PVT    500  (where “PVT” stands for “private”), and an ATM (Asynchronous Transfer Mode) network arranged between wireless public networks  300  and  400 . The public and private communication service apparatus transmits a signal packet, a voice compression packet and a data packet.  
     [0054] The CM  50  acts as an independent server in FIG. 2. However, a card instead of the independent server as the CM  50  is embedded in the BSC PVT    500  in FIG. 3. Referring to FIG. 3, the card of the CM  50  denotes “CM — 1”. The card CM — 1 has software modules including a pVLR  510 , a pMSC  520 , a pBSC  530 , a pBTMR  540  and a PMIC  560 . The BSC PVT    500  includes a pBAN (private BSC ATM Network)  550 , a TCLA (Transcode Control and Link Board Assembly)  570 , etc. coupled to a packet message path.  
     [0055] An MS  100  located in a local area (private) network can receive and transmit call signals from and to the wireless public networks  300  and  400  through the BTS  200 . The VLR in the wireless public network continuously updates a state of the MS  100  to a busy state or an idle state. If a call signal is transmitted to an MSC included in the wireless public network  400  from another MSC, an HLR (Home Location Register) (not shown) queries a subscriber state from the VLR. At this time, if the subscriber state is the idle state, the call signal is routed from another MSC to the MSC included in the wireless public network  400  so that paging is performed.  
     [0056] A description will be given of a communication path in the case where the call signal incoming into the public network is received. The MSC included in the wireless public network  400  transmits a paging request message to a BSC  300  through ITU-T (telecommunication standardization sector of the International Telecommunication Union) signaling system No. 7. In response to the paging request message, the BSC  300  transmits a general paging message to the BTS  200  through the pBSC  530 . The BTS  200  receives the paging message through a paging channel. However, when an incoming call is generated, the state of the MS  100  recorded in the VLR is queried. The MSC included in the wireless public network  400  determines whether the MS  100  is in the busy state. If the MS  100  is in the busy state, the MSC  400  performs a process corresponding to the busy state.  
     [0057] Hereinafter, a description will be given of a communication path in the case where a local-area call is generated.  
     [0058] Where an incoming call is generated, the PBX  600  transmits a paging request message to the pBSC  530 . In response to the paging request message, the pBSC  530  transmits a paging message to the BTS  200 . In response to the paging message, the BTS  200  performs paging through the paging channel.  
     [0059] On the other hand, where an outgoing call is generated, the MS  100  transmits an outgoing call message to the pBSC  530  through the BTS  200 . In response to the outgoing call message, the pMSC  520  occupies an available channel of E 1  channels coupled between the pBSC  530  and the PBX  600 . Thereafter, the pMSC  520  transmits an assignment request message to the pBSC  530 . In response to the assignment request message, the pBSC  530  transmits a channel assignment message to the BTS  200 . Accordingly, a link set-up is made between a vocoder (not shown) of the pBSC  530  and a channel of the BTS  200 . Thereafter, the MS  100  transmits a service connection completion message to the pBSC  530 . In response to the service connection completion message, the pBSC  530  informs the pMSC  520  that the link set-up has been completed through the transmission of the assignment completion message. In response to the assignment completion message, the pMSC  520  transmits a call message to the PBX  600  so that the PBX  600  can route the call message to a called party.  
     [0060] The paging request message is transmitted from the BSC  300  to the BTS  200  through the pBSC  530 . At this time, the pBSC  530  analyzes destination information contained in the paging request message. If the destination information corresponds to a subscriber located within the local area, it is determined whether the subscriber is in a local-area call connection or busy state. If the subscriber is in the call connection or busy state, the paging request message can be rejected.  
     [0061] Up to now, the description of a public and private communication service apparatus associated with a public and private mobile communication system in which the present invention can be applied has been provided only for a better understanding of the present invention. Those skilled in the art will appreciate that the present invention can be applied in another system and device having components and communication paths similar to the above-described embodiments.  
     [0062] Hereinafter, a detailed description will be given of the present invention based on the public and private communication service apparatus shown in FIGS.  2  or  3 . However, the preferred embodiments of the present invention have been disclosed for illustrative purposes, they are not intended to limit the scope of the present invention. Those skilled in the art will appreciate that the present invention can be applied in another system and device having components and communication paths similar to the above-described embodiments shown in FIGS.  2  or  3 .  
     [0063]FIG. 4 is a flow chart illustrating a method for processing a paging call signal from a public network in a public and private communication service apparatus associated with a public and private mobile communication system shown in FIGS.  2  or  3 . Hereinafter, the method will be described with reference to FIGS. 3 and 4.  
     [0064] The BSC  300  transmits a paging message to the BTS  200  in order to page the MS  100  located in a cell area for the public and private networks at step  3   a . Then, the pBAN  550  transmits the paging message to the pBTMR  540  at step  3   b.  In FIG. 2, the paging message is transmitted to the pBTMR  540  through the pCIN  42 . Returning to FIG. 3, the pBTMR  540  transmits the paging message to the BTS  200  at step  3   c.    
     [0065] The BTS  200  transmits the paging message to the MS  100  at step  3   d . It is checked at step  3   e  whether a paging response message has been received from the MS  100 . If a paging response message has been received from the MS  100 , it is transmitted to the pBTMR  540  through the pBAN  550  at step  3   f . The pBTMR  540  transmits the paging response message to the BSC  300  for the public network through the pBAN  550  at step  3   g.  Then, the BSC  300  performs a call process at step  3   h.    
     [0066] On the other hand, if a paging response message has not been received from the MS  100 , it is checked whether the number of transmission times is greater than a predetermined number of transmission times, e.g., 2. If the number of re-transmission times is greater than a predetermined number of transmission times, the BSC  300  proceeds to step  3   j  in order to terminate paging service. Otherwise, the paging message is re-transmitted at the above step  3   a.    
     [0067] In the case where the MS  100  has a problem or currently uses the private network, the MS  100  cannot transmit the paging response message. The latter case means that the MS  100  communicates with another subscriber terminal  700  located in the local area of the private network. Accordingly, although a paging signal (incoming call signal) is generated from the public network, the MS  100  cannot transmit any response message because of being in the busy state. At this time, because the public network recognizes that the MS  100  is in the idle state rather than the busy state, the wireless public network continuously transmits the paging signal (incoming call signal) toward the MS  100 . As described above, the paging message can be transmitted twice. If the MS  100  is in the busy state while the paging message is transmitted twice, the BSC cannot help performing a non-response process because the MS  100  cannot give any response to the paging signal (incoming call signal). In this case, because the public network cannot identify the location of the MS  100  and transmits the paging signal twice, radio resources of the public network cannot be effectively managed.  
     [0068]FIG. 5 is another exemplary view illustrating a configuration of a public and private communication service apparatus associated with a public and private mobile communication system in accordance with the present invention.  
     [0069] An embodiment shown in FIG. 5 can be implemented in the public and private communication service apparatus shown in FIG. 3. The pMSC  520 , the pBSC  530  and the PMIC  560  shown in FIG. 3 are omitted in the embodiment shown in FIG. 5.  
     [0070] In accordance with the embodiment of the present invention, a pBTMR  540  of the public and private communication service apparatus includes first and second determiners  540   a  and  540   b  and a paging response message generator  540   c . The first determiner  540   a  determines whether a call directed from the public network to the MS  100  is generated. The second determiner  540   b  determines whether the MS  100  is in a local-area call connection state. If a call directed from the public network to the MS  100  is generated and the MS  100  is in the local-area call connection state, the paging response message generator  540   c  generates a paging response message to transmit it to the public network instead of the MS  100 .  
     [0071] The second determiner  540   b  can determine whether the MS  100  is connected to the private network or in the local-area call connection state, by retrieving a private call table  515  having state information of the MS  100 .  
     [0072] A description will be given of processes of transmitting paging call signals from the public and private networks and processes of generating paging response messages in response to the paging call signals.  
     [0073] The process of transmitting the paging call signal from the public network is based on a path of “MSC→BSC→BSC PVT (pBTMR)→BTS→MS”. The process of generating the paging response message is based on a path of “MS→BTS→BSC PVT (pBTMR)→BSC→MSC”. Here, the BSC PVT (pBTMR) represents a software module for routing a message from the BTS  200 .  
     [0074] The process of transmitting the paging call signal from the private network is based on a path of “pMSC→BSC PVT (pBTMR)→BTS→MS”. The process of generating the paging response message is based on a path of “MS→BTS→BSC PVT (pBTMR)→pMSC”.  
     [0075]FIG. 6 is a view illustrating a structure of a table having state information of MSs included in a visitor location register for a private network in accordance with the present invention.  
     [0076] The private call table includes an ESN (Electronic Serial Number) of each MS, an MIN (Mobile Identification Number), an extension number, a subscriber name, state information. The state information indicates whether the MS uses the private network. The state information is recorded or deleted by the pMSC  520 . When the MS receives a paging call signal from the private network, the state information indicating that the MS currently uses the private network is recorded. When the call signal is released, the recorded state information is deleted.  
     [0077] When the paging response message is generated in response to the paging call signal, the pBTMR  540  retrieves the state information and then routes the paging response message. Further, the pBTMR  540  retrieves the state information and performs routing in response to the paging call signal from the public network. In other words, if a corresponding terminal uses the private network, the pBTMR  540  generates the paging response message instead of the terminal and then transmits it to the public network.  
     [0078]FIG. 7 is a view illustrating a format of a paging response message in accordance with the present invention.  
     [0079] As shown in FIG. 7, a message tag “sud_tag” indicates a type of a message such as a PRM (Paging Response Message) or an RGM (Registration Message). A mobile identification “mobile_id” includes an ESN, an MIN and an IMSI (International Mobile Subscriber Identity), etc. The IMSI is stored in an SIM (Subscriber Identity Module) and used in authentication for system connection.  
     [0080]FIG. 8 is a flow chart illustrating a method for allowing a private network to process a paging call signal from a public network in accordance with the present invention. The call process performed by the private network is made up of four stages. The method will be described with reference to FIGS. 5 and 8.  
     [0081] A first stage: It is determined whether the public network generates the paging call signal directed to the MS  100 .  
     [0082] The BSC  300  transmits a paging message to the BTS  200  in order to page the MS  100  located in a public and private cell area at step  13   a.    
     [0083] A second stage: If the public network generates the paging call signal directed to the MS  100  at the first stage, it is checked on the basis of the private call table  515  shown in FIG. 6 whether the MS  100  currently uses the private network.  
     [0084] The pBAN  550  transmits the paging message to the pBTMR  540  at step  13   b . The pBTMR  540  requests the pVLR  510  to analyze whether the MS  100  currently uses a private network call at step  13   c.    
     [0085] A third stage: If the MS  100  currently uses a private network call at the second stage, the pBTMR  540  generates a paging response message instead of the MS  100  as shown in FIG. 7 and then transmits it to the public network.  
     [0086] If the MS  100  currently uses the private network call at step  13   d , the pBTMR  540  generates the paging response message instead of the MS  100  as shown in FIG. 7 and then transmits it to the BSC  300  of the public network through the pBAN  550  at step  13   e . The BSC  300  terminates the paging service at step  13   f.    
     [0087] A fourth stage: If the MS  100  does not currently use the private network call at the second stage, a following step is performed. In other words, if the MS  100  does not currently use the private network call at step  13   d , the pBTMR  540  transmits the paging message to the BTS  200  through the pBAN  550  at step  3   g.    
     [0088]FIG. 9 is a flow chart illustrating a method for allowing a private network to transmit state information of a local-area MS located within a public and private cell area to the public network in accordance with the present invention.  
     [0089] In FIG. 3, the process of transmitting the paging call signal from the private network is based on a path of “pMSC→BSC PVT (pBTMR)→BTS→MS”. The process of generating the paging response message is based on a path of “MS→BTS→BSC PVT (pBTMR)→pMSC”. Further, the process of transmitting the state information of the local-area MS in the private network is based on a path of “BSC PVT (pBTMR)→BSC→MSC”. The above-described processes will be described in detail with reference to FIG. 9.  
     [0090] It is assumed that the MS  100  is paged from another subscriber terminal  700  in the local area. The state information of the MS  100  is transmitted to the public network. This process is as follows.  
     [0091] A first stage: If the PBX transmits a paging request message in order to page the MS  100  located in a public and private cell area, the pMSC  520  generates a paging message at step  5   a.  The pBSC  530  transmits the paging message to the BTS  200  at step  5   b.  The BTS  200  transmits the paging message to the MS  100  at step  5   c.    
     [0092] A second stage: In response to the paging message, the MS  100  generates an acknowledgement message and then transmits it to the BTS  200  at step  5   d.    
     [0093] A third stage: The BTS  200  transmits the acknowledgement message to the pBSC  530  through the pBAN  550  at steps  5   e  and  5   f.  The pBSC  530  transmits the acknowledgement message to the pMSC  520  at step  5   g.  The pMSC  520  forms a communication path in response to the acknowledgement message and then transmits a state message indicating a state (e.g., busy state) of the MS  100  to the pBSC  530  at step  5   h.  The pBSC  530  transmits the state message to the BSC  300  for the public network through the pBAN  550  at step  5   i.  The BSC  300  transmits the state message to the MSC  400  at step  5   j.  The MSC  400  records the state (e.g., busy state) of the MS  100  in the VLR in response to the state message at step  5   k.    
     [0094] A fourth stage: If the acknowledgement message has not been received at the third stage, a step relating to non-response is performed. In other words, if the pMSC  520  has not received the acknowledgement message at step  5   e,  the paging message is re-transmitted the predetermined number of times (or for a predetermined period of time) on the basis of steps  5   l  and  5   m.    
     [0095]FIG. 10 is a flow chart illustrating a method for transmitting an MS state message to an MSC when the private network terminates an MS call in accordance with the present invention.  
     [0096] A first stage: The pMSC  520  generates a call termination message relating to the MS  100  located in a public and private cell area at step  6   a.    
     [0097] A second stage: In response to the call termination message, the pBSC  530  generates an MS state (e.g., idle state) message and then transmits it to the BSC  300  for the public network through the pBAN  550  at step  6   b.    
     [0098] A third stage: The BSC  300  transmits the MS state message to the MSC  400  at step  6   c  and then the MSC  400  records the state (e.g., idle state) of the MS  100  in the VLR in response to the MS state message at step  6   d.    
     [0099]FIG. 11 is a view illustrating a format of a new message, which is made for matching subscriber states, in accordance with the present invention.  
     [0100] The new message includes message fields. The message fields basically contain a 50-byte message header field, a 2-byte message length field and a 4-byte message ID (identification) field. Destination and source addresses are recorded in the message header field. A length of a message is recorded in the message length field. A type of a message is recorded in the message ID field.  
     [0101] The busy state “LOCAL_BUSY_MSG_TYPE” or the idle state “LOCAL_IDLE_MSG_TYPE” can be recorded in the message ID field so that the message is used for matching the subscriber states.  
     [0102]FIG. 12 is a view illustrating a message in which sub-ID and sub-type data are added to a pre-existing message for matching subscriber states in accordance with the present invention.  
     [0103] As compared with the message shown in FIG. 11, the message shown in FIG. 12 further includes a message sub-ID field. The message sub-ID field is of 4 bytes. The sub-type of the message is recorded in the message sub-ID field.  
     [0104] The busy state “LOCAL_BUSY_MSG_TYPE” or the idle state “LOCAL_IDLE_MSG_TYPE” can be recorded in the message sub-ID field so that the message is used for matching the subscriber states.  
     [0105]FIG. 13 is a view illustrating a message in which sub-ID and sub-type data are added to a location registration message for matching subscriber states in accordance with the present invention.  
     [0106] As compared with messages shown in FIGS. 11 and 12, the location registration message shown in FIG. 13 further includes a 1-byte registration type field, a 1-byte slot cycle index field and a terminal version field.  
     [0107] The busy state “LOCAL_BUSY_MSG_TYPE” or the idle state “LOCAL_IDLE_MSG_TYPE” can be recorded in the registration type field so that the location registration message is used for matching the subscriber states. Further, a slot cycle index is provided for indicating a cycle so that the terminal can search a paging channel message for the cycle. For example, a slot cycle index “0” indicates a cycle of 1.28 seconds. A slot cycle index “1” indicates a cycle of 2.56 seconds. A slot cycle index “2” indicates a cycle of 5.12 seconds. Terminal versions “1”, “2” and “3” are IS-95, IS-95-A (Telecommunication Industry Association (TIA)/Electronic Industry Alliance (EIA) IS-95 and IS-95A) and TSB  44 , respectively.  
     [0108]FIG. 14 is a view illustrating a configuration of a public/private mobile communication network where the present invention is applied to a high-speed wireless data system for 1× EV-DO (1× Evolution-Data Only) ANs (Access Nodes). The mobile communication network is a wireless network capable of using a public network or PLMN (Public Land Mobile Network) and a private network. Hereinafter, functions and operations associated with a network configuration and a network element configuration for the high-speed wireless data system will be described with reference to FIG. 14. The prefix “p” is attached to nodes for a private network and nodes commonly used by the wireless private network and the PLMN in FIG. 14 as in FIG. 1.  
     [0109] ANs  11  and  21  shown in FIG. 14 are terminals conventionally used for the high-speed wireless data system. Here, we assume that the AN  11  is a subscriber capable of receiving a wireless private network service, and the AN  21  is a subscriber for receiving a PLMN service. Furthermore, pANTSs (private Access Network Transceiver Systems)  101  and  102  shown in FIG. 14 have wireless service areas  10  and  20 , respectively. The pANTS  101  or  102  sets up a session when the AN  11  or  21  moves to within the wireless service area  10  or  20  and performs a necessary operation when a UATI (Unicast Access Terminal Identifier) is assigned to a corresponding AN  11  or  21 . When incoming call reception for the AN  11  or  21  is made or outgoing call transmission for the AN  11  or  21  is made, a corresponding operation is performed. The pANTSs  101  and  102  are coupled to a hub  110 .  
     [0110] The hub  110  is coupled to nodes within the wireless private network and the PLMN or another hub which allows the hub  110  to be coupled to other nodes. The hub  110  is coupled to a hub  120  when the hub  110  is coupled to a node outside the wireless private network as shown in FIG. 14. The hub  110  is coupled to a pPDSN (private Packet Data Serving Node)  111  that only ANs within the wireless private network can use. The hub  110  is coupled to a pANC  112  commonly used by the wireless private network and the PLMN and a pAN_AAA (private Access Network-Authentication Accounting Authorization) system  113  used only in the wireless private network to carry out a data relay operation. The pAN_AAA  113  can be configured so that it can be commonly used in the wireless private network and the PLMN.  
     [0111] The pANC  112  for the wireless private network sets up a session associated with the AN  11  or  21 , assigns a UATI to the AN  11  or  21  and performs a control operation when an AN authentication procedure is performed by the pAN_AAA system  113 . The pANC  112  carries out a routing operation for a service to the AN  11  or  21  within the wireless private network or the pPDSN  111  and carries out a routing operation for a service to a network external to the private network. Furthermore, the pANC  112  performs a session setup and update operation necessary for authenticating the AN  11  or  21 , a control operation necessary for assigning a UATI to the AN  11  or  21 , a traffic control operation based on a call setup, various signalling control operations, etc. For example, the pANC  112  transfers a paging signal to the AN  11  or  21  or carries out a session information assignment or update operation, a location information storage operation and a UATI assignment operation for a DLR (Data Location Register)  121 .  
     [0112] The hub  120  is coupled to an AN_AAA  122 , an ANC  123 , a PDSN  124  and the DLR  121 , and performs a data relay operation between nodes. Furthermore, the hub  120  can be coupled to an ANTS for the PLMN, but the ANTS for the PLMN coupled to the hub  120  is not shown in FIG. 14.  
     [0113] The PDSN  124  can be coupled to other PDSNs over the Internet  130  or can be coupled to the pPDSN  111 . The ANC  123  for the public network is a general ANC for the high-speed wireless is data system, and the AN_AAA  122  is a general AN_AAA for the high-speed wireless data system.  
     [0114] The DLR  121  stores AN information and AN location information associated with the high-speed wireless data system and provides AN information when a session associated with a corresponding AN is updated. Furthermore, the DLR  121  stores AN information associated with the PLMN, and the AN information associated with the PLMN includes AN state information, user information, service class information, etc. The DLR  121  further includes AN information associated with the wireless private network in accordance with the present invention. The information registered in the DLR  121  is classified into information associated with the case where a corresponding AN receives a service from only the wireless private network and information associated with the case where a corresponding AN receives services from both the wireless private network and the PLMN. The present invention is described in terms of the case where the corresponding AN receives services from both the wireless private network and the PLMN. In this case, the DLR  121  stores the information associated with the AN of the wireless private network equal to the information associated with the AN of the PLMN, and further stores information associated with the wireless private network. Here, the information associated with the wireless private network includes information associated with a service area, e.g., an ANTS or sector, service time information, service type information, etc. Furthermore, the DLR  121  can be configured so that it can carry out an assignment operation according to a special agreement when a UATI is assigned to a corresponding AN.  
     [0115] Where the AN for the wireless private network receives a service, an identifier for discriminating a connection to the wireless private network and a connection to the public network is further provided and transmitted.  
     [0116] The pANTSs  101  and  102 , the pANC  112 , the ANC  123 , the DLR  121 ,the pPDSN  111  and the PDSN  124  can be configured so that they are based on an IP (Internet protocol). Conventionally, connections between the pANTSs  101 , the ANC  112  and the ANC  123 , and connections between the DLR  121 , the pPDSN  111  and the PDSN  124  are configured on the basis of an ATM (Asynchronous Transfer Mode). The conventional ATM-based configuration cannot implement cost-effective communication, while the IP-based configuration can implement cost effective communication. Where the pANTSs  101  and  102 , the pANC  112 , the ANC  123 , the DLR  121 , the pPDSN  111  and the PDSN  124  are configured on the basis of the IP, communications between internal boards or processors are configured so that the communications can be performed according to IPC (Inter Process Communication). Internal processors or boards of respective nodes are assigned specific IP addresses. Where the above-described nodes are located within a predetermined CO (Central Office), the nodes are assigned internal IP addresses. Nodes located outside the CO are assigned fixed IP addresses. Thus, a sufficient number of IP addresses can be assigned to the nodes.  
     [0117] Interfaces between the pANTSs  101  and  102  and the pANC  112  and the ANC  123  can use an ADSL (Asymmetric Digital Subscriber Line) modem or cable modem, etc. Furthermore, there is no problem because the pAN_AAA  113 , the AN_AAA  122 , the ANC  123  and the PDSN  124  can be initially configured on the basis of the IP. Message flow according to a call transmission process for communication within the wireless private network for the high-speed wireless data communication system in accordance with the embodiment of the present invention will be described with reference to FIG. 2. FIG. 15 is a flow chart illustrating a call processing procedure for managing state information of ANs shown in FIG. 14.  
     [0118] Referring to FIG. 15, the AN  11  of the wireless private network sends, to the pANTS  101 , a call connection request message containing a UATI and a destination address according to an air interface protocol when making a 1× EV-DO service request at step  201 . In accordance with the present invention, the AN  11  sends the call connection request message associated with a terminating AN coupled to the private network. Upon receiving the call connection request message, the pANTS  101  transfers the call connection request message to the hub  110  after an IP (Internet protocol) communication process. The hub  110  transfers a received call connection request message to the pANC  112 . The pANC  112  for the private network sends, to the DLR  121 , a request message indicating that information associated with a subscriber of the terminating AN must be provided at step  203 . Upon receiving the subscriber information request message, the DLR  121  queries corresponding subscriber information and sends a subscriber information response message containing the subscriber information to the pANC  112  at step  205 . The pANC  112  identifies a location of the terminating AN within the private network using the subscriber information contained in the received subscriber information response message and sets up a call at step  207 . Thus, the AN  11  of the wireless private network receives a high-speed wireless data service at step  209 . As described above, where the terminating AN is located within the private network, AN state information being subscriber information of the DLR  121  is not conventionally updated after the call setup. However, the AN state information is updated in accordance with the present invention.  
     [0119] After the above step  207 , the pANC  112  sends a state information update request message containing current state information of the originating AN  11  and the terminating AN to the DLR  121  at step  211 . In other words, the pANC  112  sends a request message indicating that the state information of the originating AN  11  and the terminating AN must be updated to busy state information. The DLR  121  searches for the subscriber information upon receiving the state information update request message and updates AN state information to busy state information at step  213 .  
     [0120] Then, upon receiving a call connection request message indicating that an arbitrary AN has made a request for a call connection with one of the ANs receiving the high-speed wireless data service, the PDSN  124  sends the ANC  123  for the public network at step  215 . It is assumed that the AN making the call connection request through the PDSN  124  requests that it be connected to the AN  11  in accordance with the embodiment of the present invention. Similarly, the above-described procedure is equally performed when the AN  11  makes a call connection request. The ANC  123  for the public network sends a subscriber information request message indicating that the DLR  121  must provide the subscriber information of the AN  11  at step  217 . Upon receiving the subscriber information response message, the DLR  121  searches for the subscriber information of the AN  11  and sends a subscriber information response message containing the subscriber information to the ANC  123  at step  219 . Upon receiving the subscriber information response message, the ANC  123  analyzes the subscriber information and identifies that the state of the AN  11  is a busy state. The ANC  123  sends, to the PDSN  124 , a message indicating that the AN  11  is in the busy state at step  221 .  
     [0121] If the high-speed wireless data communication service is completed, the AN  11  sends a call release request message to the pANC  112  for the wireless private network through the pANTS  101  at step  223 . In response to the call release request message, the pANC  112  releases the call associated with the AN  11  at step  225 , and the following step  227  is performed. At the above step  227 , the pANC  112  sends, to the DLR  121 , a subscriber state information message indicating that the AN  11  is in an idle state. In response to the subscriber state information message, the DLR  121  updates the state information of the AN  11  to the idle state at step  229 .  
     [0122] Also when the communication is performed between ANs within the wireless private network, the pANC  112  allows the DLR  121  to update the subscriber information according to states of the ANs.  
     [0123] The present invention can be realized as computer-executable instructions in computer_readable media. The computer_readable media includes all possible kinds of media in which computer_readable data is stored or included or can include any type of data that can be read by a computer or a processing unit. The computer_readable media include for example and not limited to storing media, such as magnetic storing media (e.g., ROMs, floppy disks, hard disk, and the like), optical reading media (e.g., CD_ROMs (compact disc-read-only memory), DVDs (digital versatile discs), re-writable versions of the optical discs, and the like), hybrid magnetic optical disks, organic disks, system memory (read-only memory, random access memory), non-volatile memory such as flash memory or any other volatile or non-volatile memory, other semiconductor media, electronic media, electromagnetic media, infrared, and other communication media such as carrier waves (e.g., transmission via the Internet or another computer). Communication media generally embodies computer-readable instructions, data structures, program modules or other data in a modulated signal such as the carrier waves or other transportable mechanism including any information delivery media. Computer-readable media such as communication media may include wireless media such as radio frequency, infrared microwaves, and wired media such as a wired network. Also, the computer_readable media can store and execute computer_readable codes that are distributed in computers connected via a network. The computer readable medium also includes cooperating or interconnected computer readable media that are in the processing system or are distributed among multiple processing systems that may be local or remote to the processing system. The present invention can include the computer-readable medium having stored thereon a data structure including a plurality of fields containing data representing the techniques of the present invention.  
     [0124] An example of a computer, but not limited to this example of the computer, that can read computer readable media that includes computer-executable instructions of the present invention is shown in FIG. 16. The computer  1600  includes a processor  1602  that controls the computer  1600 . The processor  1602  uses the system memory  1604  and a computer readable memory device  1606  that includes certain computer readable recording media. A system bus connects the processor  1602  to a network interface  1608 , modem  1612  or other interface that accommodates a connection to another computer or network such as the Internet. The system bus may also include an input and output interface  1610  that accommodates connection to a variety of other devices.  
     [0125] As apparent from the above description, the present invention provides an apparatus, method and system, which can allow a public network to recognize state information of a private network subscriber located in a private and public cell area by transmitting terminal state information from the private network to the public network in a mobile communication system interworked with the public and private networks. Accordingly, public and private mobile communication services can be quickly and smoothly provided. Further, the present invention can efficiently manage radio resources by removing unnecessary paging, e.g., transmission of a second paging call signal, or an error process based on a paging non-response.  
     [0126] Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, they are not intended to limit the scope of the present invention. Those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope of the invention. Therefore, the present invention is not limited to the above-described embodiments, but the present invention is defined by the claims which follow, along with their full scope of equivalents.