KR100802127B1 - Method for connecting call to called terminal of calling state on different networks - Google Patents

Abstract

A speech call connection method for a busy receiving terminal in heterogeneous networks is provided to be capable of transmitting information and state information on a receiving terminal to a dual-stack HLR(Home Location Register) if the receiving terminal is in busy state, so that the HLR can provide call setup conversion information necessary for a call connection re-request to a sending MSC(Mobile Switching Center), thus speech call connection is more simply reset. It is decided whether a receiving second-type mobile terminal is in busy state for a call request message sent from the first-type MSC(100)(S110-S140). If so, busy state information and roaming information are transmitted(S150,S210). Call connection request information generated on the basis of conversion number information registered according to the second-type mobile terminal is received(S230-S294). Call connection with the terminal of the second-type conversion number information is performed according to the received call connection request information(S298).

Description

Method for connecting call to called terminal of calling state on different Networks} in heterogeneous network

1 is a diagram illustrating a structure of a network interworking system for a call call connection between a conventional CDMA network and a WCDMA network;

2 is a flowchart illustrating a call processing process between CDMA mobile switches in a CDMA network based on FIG. 1;

3 is a flowchart illustrating a call processing process between WCDMA mobile switches in a WCDMA network based on FIG. 1;

4 is a flowchart illustrating a call call connection method according to the busy state of a called-party mobile communication terminal between a CDMA mobile switch and a WCDMA mobile switch according to the first embodiment of the present invention;

5 is a flowchart illustrating a call call connection method according to the busy state of a called-party mobile communication terminal between a CDMA mobile switch and a WCDMA mobile switch according to a second embodiment of the present invention.

The present invention relates to a call call connection method between different networks, and in particular, when a called subscriber station is busy during a call call connection between a mobile switch in a CDMA network and a mobile switch in a WCDMA network, A call call connection method for attempting.

In recent years, mobile communication networks have been operated as synchronous networks in North America and asynchronous networks in Europe. In general, certain countries or regions operate synchronous or asynchronous networks independently. However, in recent years, the trend of coexistence of synchronous and asynchronous networks in countries or regions is a trend. Therefore, in order to perform communication between a synchronous mobile communication terminal located in a synchronous network and an asynchronous mobile communication terminal located in an asynchronous network, a routing service for mutual call connection is required.

In general, UMTS (Universal Mobile Telecommunication System) network transmits 'third generation', broadband packet-based text, digitized voice or video and multimedia data at high speeds of more than 2 Mbps, regardless of where mobile or computer users are in the world. Provide consistent service. UMTS networks are generally referred to as WCDMA networks because asynchronous WCDMA radio technology is applied to the radio section. This UMTS network allows computer and telephone users to continue to access the Internet while traveling and have the same performance no matter where they are traveling. Users will use UMTS services through a combination of terrestrial radio and satellite transmission technology. However, when a wideband code division multiple access (WCDMA) and a code division multiple access (2G) network coexist, a call is connected between a mobile communication terminal located in a WCDMA network and a mobile communication terminal located in a WCDMA network. To do this, a format conversion function capable of mutual recognition of the information is required.

1 is a diagram illustrating a structure of a network interworking system for a call call connection between a conventional CDMA network and a WCDMA network.

As shown, the interworking system between the CDMA network and the WCDMA network includes a CDMA network system and a WCDMA network system, and a home location register 300 that manages service subscriber information using these networks.

The CDMA network system includes a CDMA mobile communication terminal 20, a CDMA mobile base station (BTS) 22, a CDMA base station controller (BSC) 24, and a CDMA mobile switching center (MSC) 100,200.

The CDMA mobile base station 22 performs a radio access termination function with the CDMA mobile communication terminal 20 according to the 3rd Generation Partnership Project 2 (3GPP2) radio access standard. In addition, the CDMA mobile base station 22 transmits and receives voice, video, and data traffic in a CDMA manner, and transmits and receives information to and from the CDMA mobile communication terminal 20 through a transmit / receive antenna.

The CDMA base station controller 24 controls the CDMA mobile base station 22 and performs a communication connection between the CDMA mobile base station 22 and the CDMA mobile switching center 100.

The CDMA mobile switch 100 routes a communication path for the CDMA mobile communication terminal 20 to communicate with a communication terminal of an external network via the CDMA mobile base station 22 and the CDMA base station controller 24. The CDMA mobile switch 200 also performs the same function as the CDMA mobile switch 100.

The WCDMA network system includes a WCDMA mobile communication terminal 40, a WCDMA mobile base station 42, a WCDMA base station controller 44, and a WCDMA mobile switch 400,500.

The WCDMA mobile base station 42 performs a radio access termination function with the WCDMA mobile communication terminal 40 conforming to the 3GPP radio access standard. In addition, the WCDMA mobile base station 42 transmits and receives voice, video, and data traffic in a WCDMA manner, and transmits and receives information to and from the WCDMA mobile communication terminal 40 through a transmit / receive antenna.

The WCDMA base station controller 44 performs wired and wireless channel management, protocol matching of the WCDMA mobile communication terminal 40, and protocol matching of the base station 42. It performs functions such as soft handover processing, core network protocol processing, GPRS (General Packet Radio Service) access, fault management, and system loading. Here, GPRS is an asynchronous communication system that supports a data transmission rate of 115 Kbps, provides a multimedia mail, and maximizes the efficiency of a transmission line by packet data transmission.

The WCDMA mobile switch 400 additionally has a soft switching structure for speeding up call processing in addition to the basic function for voice communication in the existing Interim Standard (IS) -95B network.

On the other hand, the Home Location Register (HLR) 300 supports both CDMA and WCDMA Mobile Application Part (MAP) protocols. To this end, the home location register 300 has a dual stack structure supporting both the CDMA network and the WCDMA network. The home location register 300 stores and manages subscriber information for providing a communication connection and a corresponding service between the CDMA network and the WCDMA network.

2 is a flowchart illustrating a call processing process between CDMA mobile switches in a CDMA network based on FIG. 1. Here, the first CDMA mobile switch 100 is the calling party, and the second CDMA mobile switch 200 is the called party.

As shown, the first CDMA mobile switch 100 is a called-side CDMA mobile communication terminal (BTS) 22 and a base station controller (BSC) 24 transmitted from the CDMA mobile communication terminal 20. Receive a call request signal with (not shown) (S11). At this time, the first CDMA mobile switch 100 transmits a called address request message (LOCREQ) and a 'LOCREQ [Billing ID]' including a 'Billing ID' to its dual stack home location register 300. (S13).

When the dual stack home location register 300 receives the called address request message (LOCREQ) from the first CDMA mobile switching center 100, the dual stack home location register 300 receives a connection path, that is, a routing address request message (ROUTEREQ), from the second CDMA mobile switching center 200. (S15).

Upon receiving the routing address request message (ROUTEREQ), the second CDMA mobile switch 200 determines whether the CDMA incoming mobile communication terminal is busy (busy) (S170). At this time, if the CDMA terminating mobile communication terminal is not busy according to whether the CDMA terminating mobile communication terminal is busy (S19), the second CDMA mobile switch 200 is routing number information (Temporary Local Directory Number: TLDN) for call connection. To transmit to the dual stack home location register (300) (S21).

Accordingly, the dual stack home location register 300 transmits routing number information (TLDN) transmitted from the second CDMA mobile switch 200 to the first CDMA mobile switch 100 (S23).

The first CDMA mobile switch 100 is based on the routing number information (TLDN) transmitted from the second CDMA mobile switch 200 via the dual stack home location register 300 (Initial Address Message: IAM1). In operation S25, 'IAM1 (Calling Number, Called Number)' is transmitted to the second CDMA mobile switch 200. Accordingly, the second CDMA mobile switch 200, which has received the call connection request message IAM1, connects the call with the CDMA incoming mobile communication terminal (S29).

Meanwhile, when the CDAM incoming mobile communication terminal is busy because the CDAM incoming mobile communication terminal is busy, the second CDMA mobile switch 200 transmits information indicating that the CDMA incoming mobile communication terminal is busy to the dual stack home location register 300 (S31). .

When receiving the busy state information of the CDMA incoming mobile communication terminal from the second CDMA mobile switching center 200, the dual stack home location register 300 determines whether to apply for call transfer or voicemail switching service of the CDAM incoming mobile communication terminal. (S33). If there is no service applied according to the application of the corresponding service (S35), the dual stack home location register 300 receives the busy state information of the CDMA incoming mobile communication terminal transmitted from the second CDMA mobile switch 200, the first CDMA. The transfer to the mobile switch 100 (S36).

On the other hand, if there is a corresponding service applied for the CDMA incoming mobile communication terminal, the dual stack home location register 300 detects the switching number information and transmits it to the first CDMA mobile switch 100 (S37).

Accordingly, the first CDMA mobile switch 100 receiving the switch number information transmitted from the dual stack home location register 300 performs a new call setup process based on the received switch number information, and then the call connection request information ( IAM2) is transmitted to the second CDMA mobile switch 200 (S38).

The second CDMA mobile switch 200 performs a call connection with the incoming CDMA mobile communication terminal of the switch number information based on the call connection request information IAM2 transmitted from the first CDMA mobile switch 100 (S39).

3 is a flowchart illustrating a call processing procedure between WCDMA mobile switches in a WCDMA network based on FIG. 1. Here, the first WCDMA mobile switch 400 is the calling party, and the second WCDMA mobile switch 500 is the called party.

As shown, the first WCDMA mobile switch 400 is the destination WCDMA mobile transmitted from the WCDMA mobile communication terminal 40 via the mobile base station (NODE-B) 42 and the base station controller (RNC) 44. A call request signal with a communication terminal (not shown) is received (S41). At this time, the first WCDMA mobile switch 400 transmits a routing information transmission request message (SRI) and 'SRI [MSISDN]' including its own address 'MSISDN' to the dual stack home location register 300. (S43).

When the dual stack home location register 300 receives the routing information transmission request message (SRI) from the first WCDMA mobile switch 400, the dual stack home location register 300 receives a roaming information request message (PRN) from the second WCDMA mobile switch 500. Transfer to (S45).

Upon receiving the roaming information request message (PRN), the second WCDMA mobile switch 500 allocates roaming information (MSRN) capable of receiving an incoming call to the call connection request, and thereby, a roaming information request message (PRN). The dual message is transmitted to the dual stack home location register 300 as a response message (PRN_ACK) (S47).

Accordingly, the dual stack home location register 300 transmits the roaming information MSRN transmitted from the second WCDMA mobile switch 500 to the first WCDMA mobile switch 400 (S49).

The first WCDMA mobile switch 400 is an initial address message for a call connection request based on roaming information (MSRN) transmitted from the second WCDMA mobile switch 500 through the dual stack home location register 300. IAM3) and 'IAM3 (Calling Number, Called Number)' are transmitted to the second WCDMA mobile switch 500 (S50).

Upon receiving the initial address message IAM3, the second WCDMA mobile switch 500 determines whether the WCDMA incoming mobile communication terminal is busy due to a busy state (S51). When the WCDMA destination mobile communication terminal is not busy according to the result of determining whether the WCDMA destination mobile communication terminal is busy (S52), the second WCDMA mobile switch 500 connects the incoming call for the call with the WCDMA destination mobile communication terminal. (S53).

On the other hand, when the WCDMA terminating mobile communication terminal is busy, the second WCDMA mobile switch 500 determines whether to request a call transfer or voice mailbox service registered for the WCDMA terminating mobile communication terminal (S54). If there is no service applied according to the determination of whether or not the corresponding service is applied (S55), the second WCDMA mobile switch 500 informs the release of the call according to the WCDMA incoming mobile communication terminal being busy (RELEASE: REL), ' (REL (busy)) 'is transmitted to the first WCDMA mobile switch 400 (S57).

If there is a registered call transfer or voice mailbox service for the WCDMA terminating mobile communication terminal, the second WCDMA mobile switch 500 sends a message to the first WCDMA requesting to retry call setup. The transfer to the mobile switch 400 (S59).

Accordingly, the first WCDMA mobile switch 400 receiving the call setup retry request message (RCH) transmitted from the second WCDMA mobile switch 500 sends a message (SRI) requesting routing switch information to the dual stack home position. It transmits to the register 300 (S61). The dual stack home location register 300 receiving the routing switch information request message (SRI) detects the routing switch information for the call transfer / voice mailbox connection registered corresponding to the WDMA incoming mobile communication terminal and detects the first WCDMA mobile switch. 400) (S63).

Receiving the routing switch information transmitted from the dual stack home location register 300, the first WCDMA mobile switch 400 receives a second response message (RCH_ACK) for the call setup retry request message (RCH) received in step S59. The data is transmitted to the WCDMA mobile switch 500 (S65). In addition, after performing a new call setup process based on the received routing switch information, the second WCDMA mobile switch 400 generates a call connection request message IAM4 and transmits it to the second WCDMA mobile switch 500 (S67).

As shown in Figures 2 and 3, it can be seen that the CDMA mobile switch (100,200) and the WCDMA mobile switch (400,500) is different in the call processing method according to the busy state of the destination mobile communication terminal, respectively.

Therefore, when the destination mobile communication terminal is busy in the process of establishing a call between a CDMA network including the CDMA mobile switch 100 and 200 and a WCDMA network including the WCDMA mobile switch 400 and 500, call processing of each mobile switch is performed. There is a problem that call processing errors may occur due to differences in diet.

In addition, since the receiving WCDMA mobile switch 500 provides roaming information regardless of whether the receiving mobile communication terminal is busy, there is a problem in that it occupies the relay channel unnecessarily.

In addition, when the destination mobile communication terminal is busy, the WCDMA mobile switcher 500 of the called party transmits a message to the calling party WCDMA mobile switcher 400 to request retry of call establishment according to whether to apply the switching service. Since the originating WCDMA mobile switch 400 re-requests the call establishment by receiving and requesting routing switching information from the dual stack home location register 300 accordingly, a process for retrying call establishment is complicated and thus There is a problem that the processing time is wasted.

A first object of the present invention for solving the above problems is to provide a method and apparatus for connecting a call according to the busy state of a called mobile communication terminal between a CDMA mobile switch and a WCDMA mobile switch. .

A second object of the present invention is to provide a call call connection method and apparatus for connecting a call call while using network resources more efficiently according to the busy state of a called mobile communication terminal between a CDMA mobile switch and a WCDMA mobile switch. There is.

According to a third object of the present invention, when the CDMA mobile switch is the calling party and the WCDMA mobile switching device is the called party, the WCDMA mobile communication terminal of the called party is busy. A method and apparatus for connecting a call for connecting a call are provided.

According to an embodiment of the present invention, a call call connection method between heterogeneous networks includes a busy side of a caller's second communication method mobile communication terminal with respect to a call request message transmitted from a first communication mobile switch. determining whether a busy state; Transmitting busy state information and roaming information (MSRN) when the second communication mobile terminal is busy; Receiving call connection request information generated based on the conversion number information registered in correspondence with the second communication type mobile communication terminal; And performing a call connection with the terminal of the corresponding switching number information of the second communication method according to the received call connection request information.

According to another aspect of the present invention, there is provided a call call connection method between heterogeneous networks, when a call request message transmitted from a first communication mobile switch is received. Determining whether a busy state of the network; Transmitting the busy state information when the second communication mobile terminal is busy; Receiving a switching address message generated based on routing switching information registered in correspondence with the second communication type mobile communication terminal; And performing a call connection with the terminal of the corresponding routing switching information of the second communication method according to the switching address message.

On the other hand, the call call connection device between heterogeneous networks according to an embodiment of the present invention for achieving the above object, the call request message sent from the first communication type mobile switching center of the second communication type mobile communication terminal of the called party; A determining unit determining whether a busy state is present; A transmission unit for transmitting busy state information and roaming information (MSRN) when the second communication method mobile communication terminal is busy according to the determination result; A receiving unit which receives call connection request information generated based on the switching number information registered in correspondence with the second communication type mobile communication terminal; And a call connection unit for performing a call connection with a terminal of the corresponding switching number information of the second communication method according to the received call connection request information.

According to another aspect of the present invention, there is provided a call call connection device between heterogeneous networks, when a call request message transmitted from a first communication mobile switch is received. Determination unit for determining whether the busy state of the (busy); A transmission unit for transmitting the busy state information when the second communication mobile terminal is busy; A receiving unit which receives a switching address message generated based on the routing switching information registered in correspondence with the second communication type mobile communication terminal; And a call connection unit for performing a call connection with a terminal of the corresponding routing switch information of the second communication method according to the switch address message.

According to the present invention, when a called mobile communication terminal is busy when trying to establish a call between mobile communication terminals belonging to a CDMA mobile switch and a WCDMA mobile exchange, the called mobile communication terminal information required for call setting is established. And the call information between the CDMA network and the WCDMA network by transmitting the status information of the incoming mobile communication terminal to the dual stack home location register and providing the call setting switching information required for the call connection re-request to the calling mobile terminal. If you want to set a more convenient call call connection reset according to the busy state of the called mobile terminal.

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 represented by the same numerals 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.

The present invention is intended to set up a call between mobile communication terminals belonging to a CDMA mobile switch and a WCDMA mobile switch, when the called mobile communication terminal is busy. It transmits the information and the status information of the incoming mobile communication terminal to the dual stack home location register, and the home location register provides the call setup switching information necessary for the call connection re-request to the calling party's mobile switching center. If you want to set the proposed method for a simple call call connection reset according to the busy state of the called mobile terminal.

4 is a flowchart illustrating a call call connection method according to a busy state of a called-party mobile communication terminal between a CDMA mobile switch and a WCDMA mobile switch according to the first embodiment of the present invention.

4 illustrates a call call connection method according to the busy state of the WCDMA mobile communication terminal, which is the called party when the CDMA mobile switch 100 is the calling party and the WCDMA mobile switching 400 is the called party.

As shown, the CDMA mobile switch 100 is a destination WCDMA mobile communication terminal 40 transmitted from a CDMA mobile communication terminal 20 via a mobile base station (BTS) 22 and a base station controller (BSC) 24. Receive a call request signal with the (S110). At this time, the CDMA mobile switch 100 transmits a called address request message (LOCREQ) and a 'LOCREQ [Billing ID]' including its own address 'Billing ID' to the dual stack home location register 300 ( S120). The called address request message (LOCREQ [Billing ID]) is a 2G MAP message.

When the dual stack home location register 300 receives a 2G MAP called address request message (LOCREQ) from the CDMA mobile switching center 100, it converts the roaming information request message (Provide Roaming Number (PRN)) of the 3G MAP to move the WCDMA. Transfer to the exchange 400 (S130).

The WCDMA mobile switch 400 receiving the roaming information request message (PRN) of the 3G MAP transmitted from the dual stack home location register 300 allocates the corresponding roaming information (Mobile Station Roaming Number (MSRN)) to the called terminal. It is determined whether the WCDMA mobile communication terminal 40 is busy (S140). When the WCDMA mobile communication terminal 40 is not busy according to the result of determining whether the WCDMA mobile communication terminal 40 is busy (S150), the WCDMA mobile switching unit 400 responds to a roaming information request message (PRN). As the PRN_ACK, the allocated roaming information MSRN is transmitted to the dual stack home location register 300 (S160). The roaming information MSRN is a 3G MAP message.

After receiving the roaming information (MSRN) of the 3G MAP transmitted from the WCDMA mobile switcher 400, the dual stack home location register 300 converts it into the temporary local directory number (TLDN) of the 2G MAP and converts the CDMA to the CDMA mobile station. Transmitting to the exchange 100 (S170).

Upon receiving the routing number information (TLDN), the CDMA mobile switch 100 transfers the call address request information (IAM) and 'IAM1 (Calling Number, Called Number)' to the WCDMA based on the routing number information (TLDN). The transfer to the exchange 400 (S180). Upon receiving the call connection request message (IAM), the WCDMA mobile switch 400 connects the call call with the WCDMA mobile communication terminal 40 (S190).

On the other hand, when the WCDMA mobile communication terminal 40 is busy in step S150, the busy, the WCDMA mobile switch 400, the roaming information (MSRN) allocated in step S140 and busy state information of the WCDMA mobile communication terminal 40 To, to the dual stack home location register 300 (S210).

When receiving the roaming information (MSRN) and busy state information of the WCDMA mobile communication terminal 40 allocated from the WCDMA mobile switch 200, the dual stack home location register 300 is registered in response to the WCDMA mobile communication terminal 40 It is determined whether the call transfer or the claim mailbox service application (S230). At this time, if the call transfer or voice mailbox is not applied according to the determination of the existence of the application of the corresponding service (S250), the dual stack home location register 300 includes busy status information of the WCDMA mobile communication terminal 40. In step S270, a message for requesting disconnection of the received call is transmitted to the CDMA mobile exchange 100.

If the call transfer or voicemail is requested, the dual stack home location register 300 detects the transfer number information registered in correspondence with the WCDMA mobile communication terminal 40 and transmits it to the CDMA mobile switch 100 (S290). . Accordingly, the CDMA mobile switch 100 transmits a call connection request message (IAM) to the WCDMA mobile switch 400 after performing a new call setup process based on the switch number information provided from the dual stack home location register 300. (S294).

Receiving a call connection request message (IAM) transmitted from the CDMA mobile switch 100, the WCDMA mobile switch 400 performs a call connection with the terminal corresponding to the switch number information (S298).

Accordingly, when the receiving WCDMA mobile switch 400 receives the roaming information request message for the call connection from the calling CDMA mobile switch 100, the roaming information is allocated and the receiving WCDMA mobile communication terminal 40 simultaneously. The call transfer or voicemail service according to the WCDMA mobile communication terminal 40 is busy in the dual stack home location register 300 by determining the busy state of the mobile station and transmitting the roaming information to the dual stack home location register 300. If registered, by transmitting the corresponding switching number information to the CDMA mobile switch 100 to re-request the call connection based on this, minimizing the occupancy of the relay channel to handle the call call according to the busy state of the incoming WCDMA mobile communication terminal It can be done more simply and easily.

On the other hand, the configuration of the WCDMA mobile switch 400 for the call call connection between the CDMA network and the WCDMA network according to an embodiment of the present invention, although not shown in the drawings, according to the technical features, the receiver, the discriminator, the transmitter, and It may be configured to include a call connection.

Specifically, the receiver receives a roaming information request message (PRN) transmitted from the CDMA mobile switch 100 through the dual stack home location register 300.

The determination unit allocates roaming information (Mobile Station Roaming Number (MSRN)) corresponding to the roaming information request message (PRN) received through the receiving unit, and determines whether or not the busy side of the called-party WCDMA mobile communication terminal is busy.

When the WCDMA mobile communication terminal is busy, the transmitter transmits busy state information and roaming information (MSRN) of the WCDMA mobile communication terminal to the dual stack home location register 300. The receiver receives call connection request information generated based on the conversion number information registered in correspondence with the WCDMA mobile communication terminal.

The call connection unit performs a call connection with the terminal of the corresponding switching number information according to the received call connection request information.

5 is a flowchart illustrating a call call connection method according to the busy state of a called-party mobile communication terminal between a CDMA mobile switch and a WCDMA mobile switch according to a second embodiment of the present invention.

FIG. 5 illustrates a call call connection method according to the busy state of the CDMA mobile communication terminal which is the called party when the WCDMA mobile switch 400 is the calling party and the CDMA mobile switching machine 100 is the called party.

As shown, the WCDMA mobile switch 400 is transmitted from the WCDMA mobile communication terminal 40 via a mobile base station (NODE-B) 42 and a base station controller (RNC) 44, the CDMA mobile communication terminal 20 Receive a call request signal with the (S310). At this time, the WCDMA mobile switch 100 transmits a routing information transmission request message (SRI) and 'SRI [GMSC_ADDR]' including its own address 'GMSC_Address' to the dual stack home location register 300 ( S320). The routing information transmission request message (SRI (GMSC_ADDR)) is a 3G MAP message.

The dual stack home location register 300 that receives the routing information transmission request message (SRI (GMSC_ADDR)) of the 3G MAP transmitted from the WCDMA mobile switch 100 is 2G corresponding to the routing information transmission request message (SRI (GMSC_ADDR)). The MAP is converted into a routing address request message (ROUTEREQ) of the MAP and transmitted to the CDMA mobile switch 100 (S330).

The CDMA mobile switch 100 received with the routing address request message ROUTEREQ of the 2G MAP transmitted from the dual stack home location register 300 corresponds to the routing address request message ROUTEREQ. TLDN) (S340). At this time, the CDMA mobile switch 100 determines whether the CDMA mobile communication terminal 20 of the called party is busy. When the CDMA mobile communication terminal 20 is not busy, according to the result of the busy state determination of the CDMA mobile communication terminal 20 (S350), the CDMA mobile switching center 100 transmits routing number information (TLDN) allocated in step S340. ) Is transmitted to the dual stack home location register 300 (S360). Here, the routing number information (TLDN) is a 2G MAP message.

The dual stack home location register 300 receiving the routing number information (TLDN) of the 2G MAP transmitted from the CDMA mobile switch 100 is roaming information (Mobile Station Roaming) of the 3G MAP in response to the received routing number information (TLDN). The number is converted into MSRN and transmitted to the WCDMA mobile switch 400 (S370).

Upon receiving roaming information (MSRN) of the 3G MAP transmitted from the dual stack home location register 300, the WCDMA mobile switch 400 receives an initial address message for a call connection request based on the received roaming information (MSRN). Message: IAM) and 'IAM (Calling Number, Called Number)' are generated and transmitted to CDMA mobile switch 100 (S380).

Accordingly, the CDMA mobile switch 100 performs a call connection with the CDMA mobile communication terminal 20 based on the initial address message IAM transmitted from the WCDMA mobile switch 400 (S390).

On the other hand, when the CDMA mobile communication terminal 20 is busy at step S350, the CDMA mobile switch 100 transmits busy state information of the CDMA mobile communication terminal 20 to the dual stack home location register 300 ( S410).

 The dual stack home location register 300 that receives the busy state information of the CDMA mobile communication terminal 20 transmitted from the CDMA mobile switch 100 is a call transfer or voicemail box registered corresponding to the CDMA mobile communication terminal 20. It is determined whether to apply for the service (S420). When there is no service registered in response to the CDMA mobile communication terminal 20 according to the result of determining whether the corresponding service is registered (S430), the dual stack home location register 300 receives busy state information of the CDMA mobile communication terminal 20. The transmission is transmitted to the WCDMA mobile switch 400 (S440).

On the other hand, if there is a service requested according to the application of call transfer or voicemail service (S430), the dual stack home location register 300 detects the conversion number information and transmits it to the WCDMA mobile switcher 400 (S450). ).

Accordingly, the WCDMA mobile switch 400 receiving the switch number information transmitted from the dual stack home location register 300 performs a new call setup process based on the received switch number information and then receives a call connection request message (IAM2). Is transmitted to the CDMA mobile switch 100 (S460).

The CDMA mobile switch 100 performs a call connection with the incoming CDMA mobile communication terminal 20 of the switching number information based on the call connection request message IAM2 transmitted from the WCDMA mobile switch 400 (S470).

On the other hand, the configuration of the CDMA mobile switch 100 for the call call connection between the CDMA network and the WCDMA network according to an embodiment of the present invention, although not shown in the drawings, according to the technical features, the receiver, the discriminator, the transmitter, and It may be configured to include a call connection.

In detail, the receiver receives a routing address request message (ROUTEREQ) transmitted from the WCDMA mobile switcher 400 through the dual stack home location register 300.

The determination unit allocates routing information (TDN) corresponding to the routing address request message (ROUTEREQ) received by the reception unit, and determines whether the destination CDMA mobile communication terminal is busy.

When the CDMA mobile communication terminal is busy, the transmitting unit transmits busy state information of the CDMA mobile communication terminal to the dual stack home location register 300. The receiver receives a switch address message generated based on the routing switch information registered in correspondence with the CDMA mobile communication terminal.

Accordingly, the call connection unit performs a call connection with the terminal of the corresponding routing switch information according to the received switch address message.

In the above, specific preferred embodiments of the present invention have been illustrated and described. However, the present invention is not limited to the above-described embodiments, and any person having ordinary skill in the art to which the present invention pertains may make various modifications and other equivalents without departing from the gist of the present invention attached to the claims. Implementation will be possible. Therefore, the true technical protection scope of the present invention should be defined only by the appended claims.

According to the present invention, when a called mobile communication terminal is busy when trying to establish a call between mobile communication terminals belonging to a CDMA mobile switch and a WCDMA mobile exchange, the called mobile communication terminal information required for call setting is established. And the call information between the CDMA network and the WCDMA network by transmitting the status information of the incoming mobile communication terminal to the dual stack home location register and providing the call setting switching information necessary for the call connection re-request to the calling party's mobile switching center. If you want to set up, it is possible to reset the call connection more easily according to the busy state of the called mobile communication terminal.

In addition, when the receiving WCDMA mobile exchange receives the roaming information request message for the call connection from the calling CDMA mobile exchange, the roaming information and the roaming information are determined by determining the busy state of the receiving WCDMA mobile communication terminal. In addition, if the call transfer or voicemail service is registered in the dual stack home location register, the WCDMA mobile communication terminal is busy, the corresponding switching number information is transmitted to the CDMA mobile switch to connect to the call based on the dual stack home location register. By re-requesting, processing for call call connection according to the busy state of the incoming WCDMA mobile communication terminal can be performed more simply and easily with minimal occupation of the relay channel.

Claims (12)

Determining whether the called party's second communication type mobile communication terminal is busy with respect to the call request message transmitted from the first communication type mobile switching center; Transmitting busy state information and roaming information (MSRN) when the second communication mobile terminal is busy; Receiving call connection request information generated based on the conversion number information registered in correspondence with the second communication type mobile communication terminal; And And performing a call connection with the terminal of the corresponding switching number information of the second communication method according to the received call connection request information. The method of claim 1, The busy state determination step, If the call request message transmitted from the first communication type mobile exchange is a roaming information request message (PRN), assigning roaming information corresponding to the roaming information (MSRN) corresponding to the roaming information request message (PRN); How to connect call of heterogeneous call. The method of claim 1, Transmitting the roaming information (MSRN) when the second communication mobile terminal is not busy; Receiving call connection request information generated and transmitted by the first communication mobile switch based on the routing number information provided corresponding to the roaming information MSRN; And And performing a call connection with the second communication method mobile communication terminal based on the received call connection request information. The method of claim 1, The first communication method is a CDMA communication method, and the second communication method is a call call connection method between heterogeneous networks, characterized in that the WCDMA communication method. When the call request message transmitted from the first communication type mobile switch is received, determining whether a called party's second communication type mobile communication terminal is busy; Transmitting the busy state information when the second communication mobile terminal is busy; Receiving a switching address message generated based on routing switching information registered in correspondence with the second communication type mobile communication terminal; And And performing a call connection with the terminal of the corresponding routing switch information of the second communication method according to the switching address message. The method of claim 5, The busy state determination step, And if the call request message transmitted from the first communication exchange is a routing address request message (ROUTEREQ), assigning corresponding routing information (TDN). How to connect a call between manganese. The method of claim 6, Transmitting the routing information (TLDN) when the second communication mobile terminal is not busy; Receiving an initial address message generated and transmitted by the first communication type mobile switch based on roaming information (MSRN) provided in correspondence with the transmitted routing information (TLDN); And And performing a call connection with the second communication method mobile communication terminal based on the received initial address message. The method of claim 5, The first communication method is a WCDMA communication method, the second communication method is a call call connection method between heterogeneous networks, characterized in that the CDMA communication method. A discriminating unit for determining whether a called party has a busy state of the called-party second communication method mobile terminal with respect to the call request message transmitted from the first communication method mobile switch; A transmission unit for transmitting busy state information and roaming information (MSRN) when the second communication method mobile communication terminal is busy according to the determination result; A receiving unit which receives call connection request information generated based on the switching number information registered in correspondence with the second communication type mobile communication terminal; And And a call connection unit for performing a call connection with the terminal of the corresponding switching number information of the second communication method according to the received call connection request information. The method of claim 9, If the second communication method mobile communication terminal is not busy, The transmitting unit transmits the roaming information MSRN, and the receiving unit generates and transmits a call connection request generated by the first communication type mobile switch based on the routing number information provided corresponding to the transmitted roaming information MSRN. Receiving information, and the call connection unit performs a call connection with the second communication method mobile communication terminal based on the received call connection request information. A determining unit determining whether a called state of the called-party second communication mobile terminal is busy when a call request message transmitted from the first communication mobile switching center is received; A transmission unit for transmitting the busy state information when the second communication mobile terminal is busy; A receiving unit which receives a switching address message generated based on the routing switching information registered in correspondence with the second communication type mobile communication terminal; And And a call connection unit for performing a call connection with the terminal of the corresponding routing conversion information of the second communication method according to the switching address message. The method of claim 11, If the second communication method mobile communication terminal is not busy, The transmitting unit transmits the routing information (TLDN), and the receiving unit is generated and transmitted by the first communication type mobile switch based on roaming information (MSRN) provided corresponding to the transmitted routing information (TLDN). And an address message, wherein the call connection unit performs a call connection with the second communication method mobile communication terminal based on the received initial address message.

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