KR100438435B1 - Call terminating service method of public and private common mobile communication system - Google Patents

Abstract

The present invention provides a public and private communication service device connected to a wireless public network (PLMN) providing a public mobile communication service, and at least one private base station connected to the public and private communication service device to form a public and private public cell area. A call service method in a public and private mobile communication system comprising: an incoming call message via one of the private base station and a wireless public network (PLMN) connected to the public and private communication service device. Determining whether the incoming call message is a message requesting a public mobile communication service or a private mobile communication service when received by a service device; and according to a result of the determination, the communication service device determines the incoming call message. To the private base station and provide the service of the mobile terminal to be received Recording the information to an internal registration device; and if there is an incoming response from the mobile communication terminal through the private base station, if the message is a public mobile communication message, the incoming response message to the wireless public network (PLMN). And transmitting a network connection for a corresponding private exchange service when the message is a private mobile communication message.

Description

CALL TERMINATING SERVICE METHOD OF PUBLIC AND PRIVATE COMMON MOBILE COMMUNICATION SYSTEM}

The present invention relates to a mobile communication system, and more particularly, to a call service method in a system capable of providing both public and private mobile communication services.

In general, a mobile communication network may be classified into a public mobile communication network and a private (or outdoor) mobile communication network, and the two networks may not be interoperable. That is, the mobile communication systems are designed or implemented to be a public mobile communication service or only a private mobile communication service, so that a mobile subscriber registered in each network can receive a service only from a registered network. Therefore, a mobile subscriber registered in a public mobile communication network cannot receive a private mobile communication service, and likewise, a mobile subscriber registered in a private mobile communication network cannot receive a public mobile communication service. Accordingly, it is desirable for a mobile terminal subscriber to be provided with public and private mobile communication services in one mobile terminal. If a system capable of providing both public and private mobile communication services is implemented, a method of distinguishing whether the incoming call is from a public mobile communication network or a private mobile communication network is desired. do.

An object of the present invention is to provide a call service method in a public and private mobile communication service capable system.

An object of the present invention is to provide a call service method in a system in which a mobile communication public network and a wireless private switching network are interoperable.

In accordance with the above object, the present invention provides a public and private communication service device connected to a wireless public network (PLMN) providing a public mobile communication service, and connected to the public and private communication service device to form a public and private public cell area; In a call service method in a public and private mobile communication system including at least one private base station, an incoming call message is transmitted through one of the private base station and a wireless public network (PLMN) connected to the public and private communication service device. Determining whether the incoming call message is a message requesting a public mobile communication service or a private mobile communication service when received by the public and private communication service devices, and according to the determination result. Forwards the incoming call message to the private base station and moves to the incoming Recording service provision information of the terminal to an internal registration device; and if there is an incoming response from the mobile terminal which has been received through the private base station, if the message is a public mobile communication message according to the determination result, the wireless public network (PLMN) Transmitting an incoming response message to the network; and if the message is a private mobile communication message, providing a network connection for a corresponding private exchange service.

1 is a block diagram illustrating a concept of a public and private mobile communication service according to an embodiment of the present invention;

FIG. 2 is a more detailed configuration diagram related to the public / private communication service device 12 and pBTS 8-k of FIG. 1;

3 is a block diagram illustrating the structure of FIG. 2;

4 is a software block diagram of the call management device 50 of FIG.

5 is an example of subscriber information registered in a private mobile communication service stored in the database 76 of the pVLR 64;

6A and 6B illustrate a call service according to an embodiment of the present invention;

7 shows a packet message structure.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the same elements in the figures are denoted by the same reference numerals or the same reference signs wherever possible. In addition, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

1 is a block diagram illustrating a concept of a public and private mobile communication service according to an embodiment of the present invention. In an embodiment of the present invention, as shown in FIG. 1 to provide a public and private mobile communication service, a public / private shared cell area 14, which is a public and private shared communication service area, is provided. The public / private communication service device 12 is provided. The public / private shared cell area 14 is preferably defined to benefit a particular group of communications services. For example, if a particular company is using one building, the area to which the building belongs may be designated as the public / private shared cell area 14. Determining the public / private shared cell area 14 is preferably done in consultation with a public telecommunication service provider. This is for the private base station (private BTS) 8-k in the public / private shared cell area 14 to be recognized as a public base station from the perspective of a public mobile communication system. In the present specification, a base station (BTS) belonging to a public mobile communication system, that is, the BTSs 6-1, 6-k, and 8-1 shown as an example in FIG. 1 and a public / private shared cell area In order to distinguish the private base station 8-k at 14, the private base station 8-k is referred to as " pBTS (private BTS). The pBTS 8-k is a public / private shared cell area 14 BSC of the public mobile communication system through the public / private communication service device 12, and performs functions to configure a wireless communication path and manage radio resources with the MS 24 belonging to The public / private communication service device 12 is connected to the BSC (4-m), the PSTN / ISDN (16), and the IP network (Internet Protocol Network) 18 of the public mobile communication system. The public / private communication service device 12 is connected to MSs in which the public mobile communication service and the private mobile communication service are located in the public / private shared cell area 14, for example, the MS of FIG. Performs a mobile communication service to be selectively provided to the 24. If the MS 24 is registered in the public / private communication service device 12 to receive a private mobile communication service, the MS 24 Not only the public mobile communication service but also the private mobile communication service may be provided, but if the private mobile communication service registration for the MS 24 is not in the public / private communication service device 12, the MS ( 24 may be provided with only a public mobile communication service, and the public / private communication service device 12 also performs a wired communication service with the PSTN / ISDN 16 and the IP network 18.

On the other hand, a public mobile communication network is commonly referred to as a public land mobile network (PLMN), and an example configuration of the public mobile communication system is shown in FIG. 1, wherein a plurality of mobile switching centers (MSCs) ( 2-1, .., 2-n), a plurality of base station controllers (BSC: 4-1, .., 4-m), a plurality of base stations (BTSs) (6-1, .., 6-k, 8-1, .., 8-k), Mobile Stations (MS) (20,22), and HLR / VLR (Home Location Register / Visitor Location) Register) 10. A plurality of BSCs 4-1, ..., 4-m are connected to each of the plurality of MSCs 2-1, ..., 2-n, and a plurality of BSCs 4-1, ..., ... 4-m) A plurality of BTSs 6-1, ..., 6-k, 8-1, ..., 8-k are connected to each other. In particular, pBTS (8-k) is connected as one of a plurality of BTS (8-1, ..., 8-k) connected to the BSC (4-m) of the public mobile communication system according to an embodiment of the present invention have. Each of the plurality of MSCs 2-1, .., 2-n may connect a plurality of BSCs (eg, 4-1, .., 4-m) connected to the PSTN / ISDN (Public Switch Telephone Network / Integrated). Control access to other MSCs in the Services Digital Network) or public mobile communication network. Each of the plurality of BSCs 4-1, ..., 4-m performs radio link control and handoff functions, and each of the plurality of BTSs 6-1, ..., 6-k, 8-1,. .8-k), together with MSs 20, 22, and 24 belonging to its own communication service area, that is, its cell area, perform a function of configuring a wireless communication path and managing radio resources. In the HLR / VLR 10, the HLR performs a subscriber location registration function and a database function for storing subscriber information, and the VLR is in charge of a corresponding MSC among a plurality of MSCs 2-1, .., 2-n. It is a database that temporarily stores information of the MS existing in the cell area. If the MS moves to a cell area managed by another MSC, the information stored in the VLR is deleted. In the present specification, in order to distinguish the public / private shared cell area 14, the communication service area of the BTSs 6-1, .. 6-6-k, 8-1, .. This is called a public dedicated cell area. 1 illustrates a communication service area of a BTS 8-1 among BTSs 6-1, ..., 6-k, 8-1, ... of a public mobile communication system. 15). Typically, the public dedicated cell area 15 is much wider than the public / private shared cell area 14 that is intended to benefit a particular group of communications services.

FIG. 2 includes a more specific configuration related to the public / private communication service device 12 and pBTS 8-k of FIG. 1, and FIG. 3 is a detailed block diagram of FIG. In particular, FIG. 2 is a diagram for describing communication paths when a public mobile communication service and a private mobile communication service are provided according to an exemplary embodiment of the present invention.

First, referring to FIG. 2, the public / private communication service device 12 of FIG. 1 includes a private branch exchange (PBX) 30, a pBSC (private BSC) 40, and a call management device (CM). Call Manager) 50. The private exchange 30 includes a switch 32, an E1 interface 34, and the pBSC 40 includes a pCIN 42 and a transcoder & selector bank (TSB) 44. It is to be understood that the internal configuration of the private exchange 30 and pBSC 40 of FIG. 2 is illustrated only by the components necessary to describe the communication path when providing the public mobile communication service and the private mobile communication service. The MSs 24 and 25 in FIG. 2 are located in the public / private shared cell area 14 and assume that a service is registered in the public / private service device 12 to receive a private mobile communication service. Is assumed to be in the air-only cell region 15. Under the above assumption, the communication path (i.e., the traffic channel), i.e., the MS 24, the pBTS 8-k, the pCIN 42, the TSB 44, the E1 interface 34, the switch 32 of the pBSC 40 Communication paths formed by TSB (44), pCIN (42), pBTS (8-k), and MS (25), and vice versa. One example. And communication path (i.e., traffic channel), i.e., MS 25, pBTS (8-k), pCIN (42) of pBSC (40), BSC (4-m) of PLMN (Public Land Mobile Network) 1 Communication path formed by MSC (2-1), BSC (4-m), BTS (8-1), MS (25) and the opposite direction This is an example of a route. Communication path formation for the public mobile communication service and the private mobile communication service as described above is performed by the control of the call management device 50, which is the main control device of the public / private communication service device 12.

The public / private communication service device 12 according to an embodiment of the present invention provides a wired service, an Internet Protocol (IP) terminal service, and a public and private mobile communication service. The wired service is provided by the PBX 30 of FIGS. 2 and 3, and the service between IP (Internet Protocol) terminals is provided by a gate keeper 94 of FIG. 3. The wireless call service is performed by the call management device 50 of FIGS. 2 and 3.

In FIG. 3, each of the PBX 30, the IP Network Interface board Assembly Module (INIA) 46 of the pBSC 40, and the LAN Interface Module (LIM) of the call management device 50 are local area networks 90. Is connected to. A gatekeeper 94 is also connected to the LAN 90, and an IP terminal such as a LAN phone 92, a web phone, a personal computer (not shown in FIG. 2) is also connected to the LAN 90. do.

As shown in Figures 2 and 3, according to an embodiment of the present invention, the pBSC 40 performs a function corresponding to the BSC in the public mobile communication system, that is, radio link control, handoff functions. The main controller of the pBSC 40 will be described later in conjunction with FIG. 4, which is embedded in a software block of the call management device 50 (shown as pBSC 56 in the call management device 50 of FIG. 4). The pBSC 40 includes a private communication interconnection network (pCIN) 42. The pCIN 42 is a communication path with the call management device 50, a communication path with the BSC (4-m) of the PLMN 1, a communication path with the pBTS 8-k, and a data path between each block in the pBSC 40. To provide. That is, the pCIN 42 interprets the message type, the source address included in the received message, and the destination address and transmits the same to the corresponding device or processor. The pCIN 42 and the PLMN 1 between the BSC (4-m) and the pCIN 42 and the pBTS 8-k are connected by an E1 line. The Transcoder & Selector Bank (TSB) 44 connected to the pCIN 42 of the pBSC 40 is provided for wireless service of a private mobile subscriber. The TSB 44 performs a function for matching communication data between the PBX 30 and the pBSC 40. Specifically, the TSB 44 has a 2.048 Mbps / 1.544 Mbps non-multiplexed transmission channel matching function, a vocoder function for voice coding and decoding (for example, pulse code modulation (PCM) ↔ QCELP (Qualcomm Code Excited Linear Predictive) coding)), control for soft hand-off calls and voice selection, and power control. The INIA 46 connected to the pCIN 42 of the pBSC 40 is responsible for wireless data service in the premises according to an embodiment of the present invention. It plays a role of transmitting data packet received from MS of public / private shared cell area 14 using Point to Point Protocol (PPP) server and Transmission Control Protocol / Internet Protocol (TCP / IP) to LAN 90 .

Located in the PBX 30 of FIG. 3 and connected to the switch 32 and the LAN 90 of the PBX 30, the Voice over Internet Protocol (VoIP) unit 36 includes an IP terminal such as a LAN phone 92 and a PBX. When the wired terminal (not shown in FIG. 3) connected to the 30 is interlocked by the switch 32, it serves a VoIP function.

The call management device 50 of FIG. 3 is connected to the pBSC 40 and the LAN 90. The configuration and operation of the call management device 50 will be described in more detail as follows. The call management device 50 performs a control function for a wireless call of public and private mobile communication services. At this time, the call service for the MS of the public mobile communication network controls the message to be bypassed to the public MSC. In addition, the call management device 50 performs the operation, maintenance, repair function for the radio resource. However, resource management for pBTS (8-k) is managed by the public MSC (2-1), the call management device 50 is for reference only. The call management device 50 performs a program and a PLD (Program Loaded Data) loading function of the processor controlling the pBSC resource. However, loading for pBTS (8-k) is handled by the public base station manager (BSM) (not shown). In addition, the call management device 50 controls the wired and wireless combined functions. It also supports in-house wireless short service function and performs SMS (Short Message Service) function for this. In addition, it supports a function for registering a subscriber and setting up a function of a private mobile communication network, and performs a VLR management function for a roaming function of an MS subscribed to a private mobile communication network. The call management apparatus 50 performs data communication interface (DCI) 52, pBTS Message Router (pBTMR) 54, and private BSC (pBSC) 56, as shown in FIG. , Private Mobile Switching Center (pMSC) (58), PBX Mobile Interface Controller (PMIC) (60), Short Message Service Controller (SMC) (62), Private Visitor Location Register (pVLR) (64), Wireless System Manager (WSM) ), And software blocks including a LAN Interface Module (LIM) 68. In FIG. 4, the data communication interface (DCI) 52 is an interface module for communication between the pCIN 42 of the pBSC 40 and the call management device 50. The IPC (High Capacity IPC Processor Assembly (HINA)) is an interface module. It is in charge of Inter Process Communication. pBTS Message Router (pBTMR) 54 is a module that is responsible for routing all messages that need to be processed by pBTS 8-k. More specifically, the pBTMR 54 refers to the internal router table to designate a control (signal) message path for the MS call and call service (public and private) and maintain the pBTS (8-k). Message path for maintenance service. The pBTMR 54 also communicates with the pVLR 64. The pBSC (private BSC) 56 serves as a main control unit of the pBSC 40 shown in FIG. 2 to control the pBTS 8-k. The pMSC 58 is located between the pBSC 56 and the PMIC 60 in supporting the public mobile communication network and the private mobile communication network service, and plays a role corresponding to the role of the MSC of the existing public mobile communication network. In addition, according to an embodiment of the present invention basically processes the interface for analyzing the call processing and other additional services of the subscriber and interworking with the PBX (30). More specifically, the pMSC 58 analyzes the service request of the subscriber and defines the basic strategy and processing procedure for processing it as an existing public mobile network service or a private mobile network service. . The interface with the pBSC 56 follows the processing procedure of the existing public mobile communication network, and the mutual interface uses the internal IPC. PMB (PBX Mobile Interface Controller) 60 is a module for controlling a wired or wireless composite function. The PMIC 60 is located in the public / private shared cell area 14 and is registered with private mobile communication service registered MSs such as the MS 24 shown in FIGS. 1 and 2 and the MS 25 shown in FIG. This module handles call control between wired terminal devices connected to the PBX 30. The pMSC 58 does not have a direct switching role unlike the conventional MSC. This is because pMSC 58 is a software block, so there is no switch like a public MSC. Therefore, the public / private communication service device 12 of the present invention at the time of providing a private mobile communication service uses the switch 32 of the PBX 30. In an embodiment of the present invention, a module called PMIC 60 exists between pMSC 58 and PBX 30. The PMIC 60 generates a command for controlling the switch 32 of the PBX 30 according to a switch control request of the pMSC 58 and applies it to a controller (not shown) of the PBX 30. Accordingly, the control unit of the PBX 30 performs a series of switch control corresponding to the command. The Short Message Service Controller (SMC) 62 is a module that is in charge of the control function for the short message service and the Short Message Service (SMS) web server function. The private visitor location register (pVLR) 64 is a private mobile communication service. The module manages registered subscriber information, location registration information of a private mobile communication subscriber, and information for various function services. The pVLR 64 is connected to a database 76 that stores the information. The wireless system manager (WSM) 66 is responsible for all maintenance, maintenance, and operation of the mobile communication service function provided by the public / private communication service device 12. The WSM 66 is connected with an operator console 78 for interfacing with the operator. LAN Interface Module (LIM) 68 is a module responsible for communication over LAN 90, LIM 69 shown in PMIC 60, LIM 70 shown in SMC 62, pVLR 64. LIM 72 shown in the figure, and LIM 74 shown in the WSM 66. FIG. Each of the LIMs 69, 70, 72, and 74 each has a corresponding module through an operating system (OS): PMIC 60, SMC 62, pVLR 64, WSM 66 and LAN 90. It is in charge of communication through).

As described above, in the embodiment of the present invention, programs (BSM, VLR, SMC, SMS web server, data service management device, etc.) that have been previously performed in a plurality of devices are called a call management device 50. Perform on the equipment. Accordingly, there is an advantage that the system processing efficiency can be improved by changing a complex interface into message communication between tasks under one operating system (OS). The call management apparatus 50 incorporating the above software block can use a commercial computer as a platform.

3 again, the pBTS 8-k includes a pBTS Main Controller Card (PMCC) 80, a pBTS Channel Card (PCC) 82, a Transmit & Receive Interface Card (TRIC) 84, and a PRU. (private BTS Radio Unit) 86. Configurations included in the pBTS 8-k are similar to those of the BTS in a general public mobile communication system and their operations will be omitted. In pBTS (8-k), PMCC 80 is a block that performs full control over pBTS (8-k), handling signaling messages related to call setup and system performance, managing hardware and software geometry, and Perform resource allocation. The PCC 82 performs baseband signal processing conforming to the radio standard. The TRIC 84 is responsible for the transmission and reception interface between the PRU 86 and the PCC 82. The PRU 86 is connected to a plurality of antennas ANT1-ANTn as a radio unit.

The public / private communication service device 12 according to an embodiment of the present invention provides a wired service, an Internet Protocol (IP) terminal service, and a public and private mobile communication service. Hereinafter, the public and private mobile communication service performed by the public / private communication service device 12 will be described in detail.

The public / private communication service device 12 provides a complex function service in connection with a wire as well as a wireless self function for MSs registered in the call management device 50. Services related to the wireless self function include call, call, call transfer, call forwarding, on-premises wireless data service, and on-premises wireless SMS. An example of a wired / wireless combined function service is a function of simultaneously ringing an incoming ring to the wired terminal and the MS when the wired terminal is called.

According to an embodiment of the present invention, the public mobile communication service and the private mobile communication service may be provided together, and all messages applied to the public / private communication service device 12 are analyzed to display a message corresponding to the public mobile communication network. It means to transmit transparently to the BSC for use, and route the message corresponding to the private mobile communication network to the module in the call management device 50. The module performing the role of routing is the BTMR 54 of the call management device 50. The pBTMR 54 analyzes the event message when an event such as call, call, location registration, SMS service, etc. occurs and designates a path accordingly. The pBTMR 54 includes a router table to which designated path information corresponding to each event is mapped. The pBTMR 54 transmits a message to a corresponding device and module by referring to the router table whenever each message is authorized.

First, in the embodiment of the present invention, an operation of registering a private mobile communication service in order for the MS in the public / private shared cell area 14 to receive the private mobile communication service will be described. When the operator requests registration of a private mobile communication service using the operator console 78 shown in FIG. 4, the WSM 66 displays an input screen related to the service registration on a monitor of the operator console 78. The WSM 66 displays a screen for inputting subscriber information registered for a private mobile communication service, for example, a mobile identification number (MIN), a wired terminal extension number, and a subscriber name of an MS. Can be. Accordingly, when the operator inputs the corresponding information, the WSM 55 causes the inputted information to be stored in the database 76 of the pVLR 64 as shown in FIG. 5.

The public / private communication service device 12 determines whether the incoming call is a public mobile communication service incoming call or a private mobile communication service incoming call when an incoming call arrives, and pBTS (8-k) if the incoming call is a public mobile communication service incoming call. Bypass transparently and allow private mobile communication service to be provided when private mobile communication service is called.

Calling service according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 5, 6a, 6b and 7. 6A and 6B illustrate a call service according to an exemplary embodiment of the present invention. FIG. 6A illustrates a call received from a public mobile communication network and FIG. 6B illustrates a call received from a private mobile communication network. 7 is a diagram illustrating a packet message structure. In FIG. 7, the DEST ADDR field is a field in which a destination address is recorded, and the SRC ADDR field is a field in which a source address is recorded. The TYPE field is a field for recording whether the type of the message MSG is a control message or a traffic message. The LENGTH field is a field for recording length information of the message MSG, and a SIG ID (signal ID) field is a field for recording signal type (outgoing call, incoming call, etc.) information. The DEST SUB ID field is a field for recording an ID of a designated processor among processors belonging to the counterpart device. The SRC SUB ID (source sub ID) field is a field for recording the ID of a designated processor among the processors belonging to the device to which it sends. The MSG field is a field in which a message is recorded.

First, a call service method in the public / private communication service device 12 when a call is received from a public MSC to receive a public mobile communication service will be described in detail with reference to FIG. 6A.

When the MS in the public mobile communication network transmits to the MS in the public / private shared cell area 14, the public MSC 2-1 of FIG. 1 receives the call as shown in step 300 of FIG. 6A. The call message is transmitted to the public BSC (4-m) and the public BSC (4-M) transmits the incoming call message to the public / private communication service device 12 connected to the pBTS (8-k). The pCIN 42 of the public / private communication service device 12 simultaneously transmits the received incoming call message to the call management device 50 and the pBTS 8-k, as shown in step 302 of FIG. 6A. More specifically, the pCIN 42 transmits the incoming call message to the call management device 50 by checking the TYPE field, the DEST ADDR field, and the SRC ADDR field (see FIG. 7) of the incoming call message. In the incoming call message, the information in the TYPE field of FIG. 7 is a control message, the destination address recorded in the DEST ADDR field is pBTS (8-k), and the source address recorded in the SRC ADDR field is a public BSC (4-m). to be. The incoming call message sent from the pCIN 42 to the call management device 50 is applied to the pBTMR 54 via the DCI 52. Incoming call messages sent from pCIN 42 to pBTS 8-k are forwarded via pBTS 8-k to the terminating MS in the public / private shared cell area 14. On the other hand, when the incoming call message is received through the DCI 52, the pBTMR 54 of the call management device 50 informs the pVLR 64 whether the MS to be called is in the private mobile communication service as in step 304 of FIG. Ask for analysis. The pBTMR 54, which has received the result of the pVLR 64, then determines in step 306 of FIG. 6A whether the MS to be called is in a private mobile communication service. If the MS to be reached is in the private mobile communication service, the pBTMR 54 proceeds to step 308 of FIG. 6A and transmits that the MS to be reached to the public BSC 4-m is busy. If the MS to be called is not in the private mobile communication service in step 306 of FIG. 6A, the pBTMR 54 proceeds to step 310 of FIG. 6A and records that the MS received in the pVLR 64 will be used for the public mobile communication service. do.

Meanwhile, as shown in step 312 of FIG. 6A, the pCIN 42 receives a call response message from the pBTS 8-k when the terminating MS transmits the pBTS 8-k to the pBTS 8-k. To send. More specifically, pCIN 42 transmits the incoming call response message to the call management device 50 by checking the TYPE field, the DEST ADDR field, and the SRC ADDR field (see FIG. 7) of the incoming call response message. . In the incoming call response message, the information in the TYPE field of FIG. 7 is a control message, the destination address recorded in the DEST ADDR field is the call management device 50, and the source address recorded in the SRC ADDR field is pBTS (8-k). .

The pBTMR 54 of the call management device 50 checks the SIG ID field of the received incoming call response message, and if the incoming call response is signal information, as shown in step 314 of FIG. 6A, the incoming call response message is public. The pVLR 64 analyzes whether or not it is for a mobile communication service or a private mobile communication service. The pVLR 64 responds to the incoming call by referring to the information recorded by the pBTMR 54 in the pVLR 64 in step 310 of FIG. 6A or the information recorded in the pVLR 64 by the pMSC 58 in step 400 of FIG. 6B to be described later. Analyze whether the message is for a public or private mobile communication service. When the pVLR 64 notifies the analysis result, the pBTMR 54 determines whether the incoming call response message is for the public mobile communication service in step 316 of FIG. 6A. If it is for the public mobile communication service, the pBTMR 54 proceeds to step 318 of FIG. 6A and transmits an incoming call response message to the public BSC 4-m. More specifically, the pBTMR 54 changes the destination address in the DEST ADDR field in the incoming call response message to the public BSC 4-m and transmits it to the pCIN 42 via the DCI 52. The pCIN 42 sends the incoming call response message to the public BSC 4-m according to the destination address in the DEST ADDR field of the incoming call response message. The public BSC (4-m) will send an incoming call response message to the MSC 2-1, and the MSC 2-1 will perform the known public mobile communication service using the incoming call response message. However, if the incoming call response message is for the private mobile communication service in step 316 of FIG. 6A, the pBTMR 54 transmits the incoming call response message to the pBSC 56, as in step 320 of FIG. 6A.

Next, referring to FIG. 6B, a call service method in a public / private communication service device 12 when a call is received from a private MSC, that is, a pMSC in the call management device 50, is provided to provide a private mobile communication service. It explains in detail.

When the MS in the public / private shared cell area 14 and registered in the private mobile communication service is sent to the MS registered in the public / private shared cell area 14 and registered in the private mobile communication service, the call management device ( The pMSC 58 of 50) records that the MS to be reached to the pVLR 64 will be used for the private mobile communication service as in step 400 of FIG. 6B. The pMSC 58 then sends an incoming call message to the pBSC 56 as in step 402 of FIG. 6B and the pBSC 56 sends the incoming call via pBTMR 54, DCI 52 and pCIN 42. Send the message to pBTS (8-k). The incoming call message sent from the pCIN 42 to the pBTS 8-k is delivered to the destination MS in the public / private shared cell area 14 via the pBTS 8-k.

Meanwhile, as shown in step 404 of FIG. 6B, the pCIN 42 is an incoming call response transmitted to the pBTS 8-k by a terminating MS registered in a private / communication shared cell area 14 and registered with a private mobile communication service. When a message is received from the pBTS 8-k, it is transmitted to the call management device 50. The pBTMR 54 of the call management device 50 checks the SIG ID field of the received incoming call response message and if the signal information of the incoming call response is shown, as shown in step 406 of FIG. 6B, the incoming call response message is public. The pVLR 64 analyzes whether or not it is for a mobile communication service or a private mobile communication service. The pVLR 64 refers to the information recorded by the pBTMR 54 in the pVLR 64 in step 310 of FIG. 6A or the information recorded in the pVLR 64 by the pMSC 58 in step 400 of FIG. 6B. It analyzes whether it is for public mobile communication service or private mobile communication service. When the pVLR 64 notifies the analysis result, the pBTMR 54 determines whether the incoming call response message is for a private mobile communication service in step 408 of FIG. 6B. If not for the private mobile communication service, the pBTMR 54 proceeds to step 410 of FIG. 6B and transmits an incoming call response message to the public BSC 4-m. More specifically, the pBTMR 54 changes the destination address in the DEST ADDR field in the incoming call response message to the public BSC 4-m and transmits it to the pCIN 42 via the DCI 52. The pCIN 42 sends the incoming call response message to the public BSC 4-m according to the destination address in the DEST ADDR field of the incoming call response message. The public BSC (4-m) will send an incoming call response message to the MSC 2-1, and the MSC 2-1 will perform the known public mobile communication service using the incoming call response message.

Meanwhile, if the incoming call response message is for the private mobile communication service in step 408 of FIG. 6B, the pBTMR 54 proceeds to step 412 of FIG. 6B and transmits the incoming call response message to the pBSC 56. The pBSC 56 allocates the vocoder resource of the TSB 44, as shown in step 414 of FIG. 6B, and transmits an incoming call message to the pMSC 58. When the incoming call message is received, the pMSC 58 controls the switch 32 of the PBX 30, as in step 416 of FIG. 6B, and transmits a new ring message to the destination MS. PMSC 58 then establishes a call when the called MS responds, as in step 418 of FIG. 6B. The operations of the pMSC 58 and the pBSC 56 in steps 414 to 418 of FIG. 6B are to help understand the specific contents according to the embodiment of the present invention. Therefore, it should be understood that the general processing operations of pMSC 58 and pBSC 56 in other incoming call processing are similar to those performed by MSCs and BSCs in public mobile communication systems.

In the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be defined by the described embodiments, but should be determined by the equivalent of claims and claims.

As described above, the present invention provides a call service in a system capable of providing both public and private mobile communication services.

Claims (4)

A public and private communication service device connected to a wireless public network (PLMN) providing a public mobile communication service, and a public including at least one private base station connected to the public and private communication service device to form a public and private public cell area; And a call service method in a private mobile communication system, When an incoming call message is received by the public and private communication service device through one of the private base station and a wireless public network (PLMN) connected to the public and private communication service device, the incoming call message requests a public mobile communication service. Determining whether the message is a message requesting a private mobile communication service; A second step of transmitting, by the communication service device, the incoming call message to the private base station according to the determination result, and recording service provision information of the mobile terminal to be received in an internal registration device; If there is an incoming response from the incoming mobile terminal through the private base station, if the message is a public mobile communication message according to the determination result, the incoming response message is transmitted to the wireless public network (PLMN), and the message is a private mobile communication. And in the case of the message, a third step of providing a network connection for a corresponding private exchange service. delete The method of claim 1, wherein the first step comprises: analyzing whether the called mobile terminal is currently in a private mobile communication service and transmitting to the public mobile communication network that the called terminal is busy when the called terminal is in a private mobile communication service. The call service method further comprising. The database of claim 1 or 3, wherein the third step records that the incoming mobile terminal is to be used for a mobile communication service corresponding to the determination result information recorded in the database if there is an incoming response from the incoming mobile terminal. Call service method further comprising the step of doing.