KR0182233B1 - How to Roam between Digital and Analog Mobile Phone Networks - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

A mutual roaming method that implements the interworking function between a code division multiple access (CDMA) digital mobile telephone network and an existing analog mobile telephone network.

2. The technical problem to be solved by the invention

It is difficult for new operators to construct a national network at the beginning, and it takes a lot of time and effort to optimize the radio environment in order to eliminate the shadow area, and because the integrated network number planning is impossible, delays in call setup occur and facilities for processing the traffic There was a problem that caused a lot of disadvantages for the subscribers because of the increase of capacity and the need to change the subscriber's defense when the subscriber's network was changed.

3. Summary of Solution to Invention

Digital mobile phone service (CDMA) subscribers using dual-mode terminals are provided with digital mobile phone service in the digital mobile phone service area, and are not provided with digital mobile phone service (digital mobile phone shadowing area or unserviced area). Is able to provide outgoing and incoming call service using existing analog mobile telephone network that is in service, and wireless connection when two or more networks with different wireless connection standards such as digital mobile telephone and analog mobile telephone are operated simultaneously. To provide a roaming method between digital mobile telephone networks and analog mobile telephone networks that enables station and signaling network number planning regardless of specifications.

4. Important uses of the invention

It is used to use the service area of the existing analog mobile telephone network that covers the whole country in the newly established CDMA mobile telephone network.

Description

How to roam between digital and analog mobile phone networks

1 is a block diagram of a general mobile telephone system.

2 is a comparison of the service area of the existing network and the service area of the new network.

3A and 3B are hierarchical structure diagrams of a digital mobile telephone network protocol and an analog mobile telephone network protocol.

4 is a network structure diagram for interworking between a digital mobile telephone network and an analog mobile telephone network to which the present invention is applied.

5 is an explanatory diagram for explaining a signal point configuration method.

6 is a flowchart of a location registration process according to the present invention.

7 is a flowchart of a process of receiving a location registration response message according to the present invention.

8A and 8B are a flow chart of a call processing process according to the present invention.

9 is a flowchart illustrating a receiving process of a routing information request message, a subscriber information request message, and an information change request message according to the present invention.

* Explanation of symbols for main parts of the drawings

10: HLR (Home Location Register) 20: MSC (Mobile Switching Center)

30: BS (Base Station) 40: MS (Mobile Station)

50: Visitor Location Register (VLR)

The present invention is an interoperation function between a digital mobile telephone network of Code Division Multiple Access (CDMA) and a conventional analog mobile telephone network that have been developed in Korea and have started commercial service. It relates to a mutual roaming method to implement the.

It is very difficult to build a complete nationwide network with nationwide service right from the beginning of service when developing or introducing a new mobile phone system to build a network and start service. However, the mobile phone loses the persuasiveness of the service itself when there are regional constraints due to the characteristics of the service, and especially in the case of the competition with the existing service provider that covers the whole country when the new operator starts the mobile phone service. This is a serious problem.

In addition, a mobile phone may generate a shaded area due to the inherent characteristics of radio waves, and especially in a newly constructed network, it takes a lot of time and effort to optimize the radio environment to eliminate such shaded areas.

Even in the case of the existing network operator, in order to accommodate new subscribers in the newly constructed network and induce the old subscribers to move to the new network, the new network service must guarantee at least the same service area as that of the existing network. However, when a network is newly established and a service is started, a network operator must start an initial service in a limited service area that can be realistically realized, which causes many problems in business development. In addition, for systematic and efficient network operation, network number plans such as station number, subscriber number plan and signaling network number plan used in the network should be integrated and operated regardless of network type. When this integrated numbering plan is impossible, the service network cannot be distinguished according to the station number, which causes a lot of problems in assigning subscriber numbers.

For example, consider the case that a mobile phone provider using one network identification number uses 200 station numbers for analog mobile phone service and 300 station numbers for digital mobile phone service (CDMA). The same problem occurs.

First, when a call is received from the public telecommunication network (PSTN), the call flowed into the mobile phone network by the network identification number requires a relay process back to the network by the internal service network number. It is necessary to increase the capacity of the facility to handle the traffic.

Secondly, if the analog service subscriber wants digital mobile telephone service (CDMA), the subscriber must change the number even if they receive the service from the same operator, which causes a lot of disadvantages for the subscriber, Through the subscription and the conversion of existing analog subscribers, the number of digital mobile phone service subscribers is increasing, and all the subscriber numbers that can be allocated from 300 stations are used. . However, since 200 station numbers are allocated for analog use and used by a certain number of subscribers, they cannot be used to allocate subscriber numbers for digital mobile phone service, and thus no more subscribers can be accommodated in newly established networks. .

In order to solve the above problems, the present invention provides a digital mobile telephone service (CDMA) subscriber using a dual mode terminal, and receives a digital mobile telephone service in the digital mobile telephone service area, and does not provide a digital mobile telephone service. In the area (digital mobile radio wave shaded area or unserviced area), outgoing and incoming call service can be provided by using existing analog mobile telephone network, and wireless access standards such as digital mobile telephone and analog mobile telephone are mutually different. It is an object of the present invention to provide a method for roaming a digital mobile telephone network and an analog mobile telephone network that enables station number and signaling network number planning regardless of a radio access standard when two or more different types of networks are operated simultaneously.

In order to achieve the above object, the present invention provides a digital mobile telephone network having a protocol of a digital mobile telephone network and a protocol of an analog mobile telephone network, and applied to a digital mobile telephone network using a different protocol and an analog mobile telephone network. In the mutual roaming method of an analog mobile telephone network, a mobile communication system that receives a location registration request generates a location registration request message according to an analog mobile telephone network protocol according to the form of a home location register (HLR) of a mobile terminal requesting location registration. Or, after generating the location registration request message according to the digital mobile telephone network protocol and transmitting the location registration request message to the HLR, when receiving the location registration response message from the HLR, the location registration response message according to the analog mobile telephone network protocol according to the signal link type Create or Generates a position registration reply message in accordance with the digital mobile telephone network protocol and then in a first step of performing the location registration to the VLR (Visitor Location Register); The mobile communication system receiving the incoming call setting request generates the incoming location information request message according to the analog mobile telephone network protocol or the called location information request according to the digital mobile telephone network protocol according to the type of the HLR of the called terminal requiring the incoming call setting. Generating a message and transmitting a called location information request message to the home location register (HLR); The mobile communication system receiving the called location information request message generates the called location information request message according to the analog mobile telephone network protocol or generates the called location information request message according to the digital mobile telephone network protocol according to the signal link type. Depending on the location and type of message, the destination location response message according to the digital mobile phone network protocol is generated and transmitted to MSC (Mobile Switching Center), or the routing information request message according to the analog mobile phone network protocol is generated. Transmitting to a Register; And the mobile communication system that receives the message except for the location registration request message, the incoming call setting request message, and the incoming location information request message, generates a message and a response message according to the analog mobile telephone network protocol according to the signal link type, or generates a digital mobile telephone network. And a fourth step of generating a message and a response message according to a protocol to the home location register (HLR).

Hereinafter, with reference to the accompanying drawings will be described an embodiment according to the present invention;

1 is a configuration diagram of a general mobile telephone system.

Mobile phone system is generally composed of the Home Location Register (HLR) (10) that stores the location information and service information of the home subscriber, the Mobile Switching Center (MSC) 20 that is responsible for the call connection function, and mainly inside the MSC It consists of a VLR (Visitor Location Register) 50 that stores the visitor's information, a BS (Base Station) 30 that is responsible for the interface between a wired network and a wireless section, and a mobile station (MS) 40 that is a subscriber terminal. do.

The VLR 50 may be located outside the MSC 20 in some cases, and the HLR 10 may be configured inside the MSC 20. The BS 30 may be divided into a base station (BTS) and a base station controller (BSC). In general, a plurality of HLRs 10 may exist in one service network, and one or more VLR / MSCs 20 and 50 may be connected to one HLR 10, and one MSC 20 may be connected to one HLR 10. Several BSs 30 may be connected. It is possible to service by multiple mobile telephone networks in the same area, and multiple networks can completely service or cross service areas.

2 is a comparison between the service area of the existing network and the service area of the new network.

In general, newly established mobile telephone service networks start service in a limited area and gradually expand the area as shown in the figure. In addition, the newly formed service network is more likely to generate a large number of shaded areas than the existing service network.

In order to use the service area of the existing mobile phone network with the nationwide service right in the new mobile phone network that starts the service by establishing a new network and to be able to integrate the network number plan, a complete mutual service for location registration and call processing between the two networks is possible. Requires interworking Unlike wired telephone networks, mobile telephone networks must manage the mobility of subscribers. Accordingly, new network components such as VLR (Visitor Location Register) / MSC (Mobile Switching Center) and HLR (Home Location Register) are added or existing network components Was changed. Therefore, in addition to the basic call establishment protocol, the mobile telephone network requires an interworking protocol for exchanging information between these network components. In order for two mobile phone networks to interwork for location registration and call processing, full compatibility with the above-described interworking protocols must be achieved.

3a and 3be are hierarchical structure diagrams of a digital mobile telephone network protocol and an analog mobile telephone network protocol.

Currently, the CDMA mobile phone service system developed in Korea is a GSM (Global System for Global Standard for Signaling System) based on the International Telecommunication Union (ITU-T) Recommendation and a protocol for digital mobile communication. Mobile communication) The system was implemented using the domestic standard code division multiple access (CDMA) MAP protocol based on the reconstruction based on MAP (Mobile Application Part) and IS41, a protocol for analog mobile communication. However, existing analog mobile phone networks use the IS41A as a higher level protocol using the American National Standards Institute (ANSI) Common Line (NO.7) signaling. Therefore, direct interworking of the signaling protocols between two networks is impossible and sharing of service areas is also impossible.

The present invention can solve all the above problems by enabling interworking such as call processing and location registration between mobile telephone networks having different protocols, such as a CDMA mobile telephone network and an analog mobile telephone network.

4 is a network structure diagram for interworking between a digital mobile telephone network and an analog mobile telephone network to which the present invention is applied.

In order for a CDMA mobile telephone network and an analog mobile telephone network that use different protocols to interwork, a converter for performing a protocol conversion function between the two networks is required. The protocol conversion function can concentrate or disperse any network element of each network element constituting the network, and this case shows the case where this function is located in the gateway, which is a connection relay between two networks. It was.

The Gateway will provide both the International Telecommunication Union (ITU-T) standard and the American National Standards Institute (ANSI) standard at each layer of the protocol from MTP L3 (Message Transfer Part Level 3) to Transaction Capabilities Application Part (TCAP). It is configured to provide both CDMA Mobile Application Part (MAP) and IS41A in the application layer, and performs IS41A function in Code Division Multiple Access (CDMA) network. The protocol conversion function performed by a gateway may be performed in a mobile switching center (MSC) of a code division multiple access (CDMA), or a network may be configured to be performed by a signal transfer point (STP).

5 is an explanatory diagram for explaining a signal point configuration method.

In a general signal network, one signal point code exists for one physical signal point, but in the present invention, the International Telecommunication Common (ITU) Common Line (NO.7) signal network and the American National Standards Institute (ANSI) common line ( NO.7) Since signaling networks exist at the same time, the gateway or mobile switching center (MSC), which performs protocol conversion functions, configures data so that two signaling point codes exist for one specific signaling point. That is, as shown in FIG. 5, the signal point type is determined by the International Telecommunication Union (ITU) or the American National Standards Institute (ANSI) according to the usage of the signal point, and the system can recognize two physical signal points. Two signal point codes are configured to exist at the same time.

6 is a flowchart of a location registration process according to the present invention.

The mobile terminal generates a location registration request message in accordance with the rules agreed with the system for updating location information for call processing, and the mobile communication system receives the location registration request message in the idle state 61 (62). The location registration request message includes the number of the mobile terminal, and the mobile communication system analyzes the station number (63) to determine whether the home location register (HLR) of the mobile terminal is an analog HLR or a CDMA HLR (64). . If the home HLR of the mobile terminal is an analog HLR, an IS41A location registration request message is generated (65). In the case of a CDMA HLR, a location registration request message of a CDMA MAP is generated (66). If the generated location registration request message is to be transmitted to the analog HLR according to the type of HLR, a common line message is generated through ANSI TCAP, ANSI Signaling Connection Control Part (SCCP), and ANSI MTP (67), and transmitted to the CDMA HLR. If necessary, a common line message is generated via ITU-T TCAP, ITU-T SCCP, and ITU-T MTP (68). When the location registration request message generation is completed, the location registration request message is transmitted to the HLR according to the signal point determined when the message is generated (69), and the mobile communication system transitions to the location registration response message waiting state (70).

7 is a flowchart of a process of receiving a location registration response message according to the present invention.

In the response waiting state, any response message can be received. Here, the case of receiving the location registration response message described in FIG. 6 will be described.

Upon receiving the location registration response message from the HLR (Home Location Register) in the response waiting state (70), the mobile communication system analyzes the signal link type (72) and receives the location registration response message as the US standard. It is determined whether the association (ANSI) signal link or the International Telecommunications Union (ITU-T) signal link (73). When the received location registration response message is received on the American National Standards Institute (ANSI) type signal link according to the type of signal link, a MAP (Mobile Application Part) location registration response message is generated through ANSI MTP, ANSI SCCP, and ANSI TCAP. (74), when received on the ITU-T type signal link, a MAP location registration response message is generated via ITU-T MTP, ITU-T SCCP, and ITU-T TCAP (75). . Thereafter, the application layer generates subscriber data in the VLR (Visitor Location Register) through analysis of the MAP location registration response message generated through the above process (76) and transitions to the idle state (61).

8A and 8B are flowcharts of a call processing process according to the present invention.

When the call is relayed from the public communication network (PSTN) in the idle state 61 or the mobile subscriber attempts to receive a call and receives an incoming call setup request (81), the receiver subscriber's home location register (HLR) is transmitted to the call subscriber's location information. The station number is analyzed to inquire (82) to determine whether the HLR of the called terminal is an analog HLR or a CDMA HLR (83). When the HLR of the called terminal is an analog HLR, an IS41A called location information request message is generated (85). When the generated MAP (Mobile Application Part) called location information request message needs to be transmitted to the analog HLR according to the HLR type, a common line (NO.7) message is generated through ANSI TCAP, ANSI SCCP, and ANSI MTP (86). In case of transmission to a CDMA HLR, a common line (NO.7) message is generated through ITU-T TCAP, ITU-T SCCP, and ITU-T MTP (87). When the terminating location information request message is generated, the terminating location information request message is transmitted to the home location register (HLR) according to the signal point determined when the message is generated (88), and the mobile communication system transitions to the response waiting state (89).

Next, a call processing process at the time of receiving the destination location information request will be described.

The incoming location information request message is a message transmitted from MSC or VLR (Visitor Location Register) to HLR when a call is set up. When the incoming location information request message is received (90), the mobile communication system analyzes the signal link type and receives the message. It is determined whether a signal link type is the American National Standards Institute (ANSI) signal link or the International Telecommunications Union (ITU-T) signal link (91). When the received location information request message is received on the American National Standards Institute (ANSI) type signal link according to the type of signal link, the MAP destination location information request message is generated through ANSI MTP, ANSI SCCP, and ANSI TCAP (92 ), When received on an ITU-T type signal link, a MAP destination location information request message is generated via ITU-T MTP, ITU-T SCCP, and ITU-T TCAP (93).

The application layer analyzes the MAP called location information request message generated through the above process (94) and analyzes the location of the called subscriber (95) to determine the location of the called subscriber and the type of received message (IS41A or CDMA MAP). And determine (96) if the called party is located in the CDMA network and the received message is a CDMA MAP message, generate a destination location response message of the CDMA MAP (97), otherwise generate an IS41A routing information request message. (98). The generated IS41A routing information request message is generated based on the location of the called party (99) and when the called party is located in the analog network, a common line (NO.7) message is generated through ANSI TCAP, ANSI SCCP, and ANSI MTP (100). When the called party is located in the CDMA network, a common line (NO.7) message is generated through ITU-T TCAP, ITU-T SCCP, and ITU-T MTP (101). The mobile communication system requests the routing information by transmitting the IS41A routing information request message to the VLR (Visitor Location Register) where the called terminal is located (102), and transitions to the waiting status for the routing information request (103), and the CDMA MAP called location response message. After generating a common channel message through ITU-T TCAP, ITU-T SCCP, and ITU-T MTP L3 (104), send the destination location information request message to the MSC that sent (105), and wait for the destination location request response. Transition to state 106.

9 is a flowchart illustrating a receiving process of a routing information request message, a subscriber information request message, and an information change request message according to the present invention.

In the idle state 61, when receiving a message such as a routing information request message, a subscriber information request message, an information change request message, and a remote service control request message in addition to the location registration request message and the incoming location information request message (111), the mobile communication system Analyzes the signal link type to determine whether the signal link type receiving the message is the American National Standards Institute (ANSI) signal link or the International Telecommunications Union (ITU-T) signal link (112). When the received message is received on the American National Standards Institute (ANSI) type signal link according to the type of signal link, the MAP message is generated through ANSI MTP, ANSI SCCP, and ANSI TCAP (113). If received on the T) type signal link, a MAP message is generated through ITU-T MTP, ITU-T SCCP, and ITU-T TCAP (117). The application layer analyzes the MAP message generated through the process (114, 118) and generates a corresponding response MAP message (115, 119). The generated response MAP message is generated through the ANSI TCAP, ANSI SCCP, and ANSI MTP if it is to be transmitted to the analog network according to the form of the signal link (116), and ITU-T if it is to be transmitted to the CDMA network. The common line message is generated through the TCAP, the ITU-T SCCP, and the ITU-T MTP (120). When the message generation is completed, the response message is transmitted to the HLR (Home Location Register) according to the signal point determined when the message is generated (121) and transitions to the idle state (122).

The present invention as described above is newly developed like CDMA because the present method can use the service area of the analog mobile telephone network with the nationwide service right in the CDMA mobile telephone network by concentrating or distributing the method to any of the network components. It is possible to reduce the risk of enormous initial facility investment that may occur when a new service network needs to be established by using a mobile phone system.In addition, after verifying system reliability and performance through commercial service in a certain area, it is gradually As a result, it is possible to establish a national network, and also to solve the problem of shadowed areas that may occur in newly established mobile telephone networks.

In addition, since two networks can interoperate like a single network, in the network number planning such as signal point assignment, station number operation, subscriber number assignment, etc., a single network concept number planning is possible, regardless of the type of service network. It is possible to simultaneously accommodate CDMA and analog subscribers in the same station number, and have the effect of allowing the analog network subscribers who want to switch to CDMA mobile phone service to use the subscriber number of the current analog network.

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

Claims (15)

A method of roaming a digital mobile telephone network and an analog mobile telephone network in a digital mobile telephone network and an analog mobile telephone network having a protocol of a digital mobile telephone network and a protocol of an analog mobile telephone network, wherein the digital mobile telephone network and the analog mobile telephone network are interworked. The mobile communication system receiving the location registration request generates a location registration request message according to the analog mobile telephone network protocol or the location registration request according to the digital mobile telephone network protocol according to the type of HLR (Home Location Register) of the mobile terminal requesting location registration. After generating the message and sending the location registration request message to the HLR, receiving the location registration response message from the HLR generates a location registration response message according to the analog mobile telephone network protocol according to the signal link type or according to the digital mobile telephone network protocol. A first step (61 through 76) of generating a location registration response message and then performing location registration with a visitor location register (VLR); The mobile communication system receiving the incoming call setting request generates the incoming location information request message according to the analog mobile telephone network protocol or the called location information request according to the digital mobile telephone network protocol according to the type of the HLR of the called terminal requiring the incoming call setting. A second step (61, 81 to 89) of generating a message and transmitting a called location information request message to the HLR (Home Location Register); The mobile communication system receiving the called location information request message generates the called location information request message according to the analog mobile telephone network protocol or the called location information request message according to the digital mobile telephone network protocol according to the signal link type. Depending on the location and type of message, the destination location response message according to the digital mobile phone network protocol is generated and transmitted to MSC (Mobile Switching Center), or the routing information request message according to the analog mobile phone network protocol is generated. A third step (61, 90 to 106) for transmitting to the register; And the mobile communication system that has received the message except for the location registration request message, the incoming call setting request message, and the incoming location information request message, generates a message and a response message according to the analog mobile telephone network protocol according to the signal link type to generate the message. And a fourth step (61, 111 to 122) of transmitting to a home location register. The method according to claim 1, wherein the mobile communication network configures data such that two signal point codes exist for one specific signal point, and determines a signal point type as a digital signal point or an analog signal point according to the use of the signal point. A method for mutual roaming between a digital mobile telephone network and an analog mobile telephone network, characterized in that two signal point codes that can be recognized by the mobile communication system exist simultaneously for one physical signal point. 3. The digital mobile telephone system according to claim 2, wherein the protocol of the digital mobile telephone network and the protocol of the analog mobile telephone network are configured by concentrating on an arbitrary element of the network components constituting the mobile telephone network or by distributing it to each network component. Roaming method between telephone network and analog mobile telephone network. 4. The method of claim 3, wherein the first steps (61 to 76), when the mobile communication system receives the location registration request message in the dormant state, analyzes the station number of the mobile terminal that has requested the location registration, and analyzes the HLR (HLR) of the mobile terminal. A fifth step (61 to 64) determining whether the home location register is an analog HLR or a digital HLR; As a result of the determination of the fifth step (61 to 64), in case of analog HLR, location registration request message and common line message according to analog mobile telephone network protocol are generated, and in case of digital HLR, MAP location registration according to digital mobile telephone network protocol A sixth step (65 to 70) of generating a request message and a common line message and transmitting a location registration request message to the HLR according to a signal point determined when the message is generated and transitioning to a location registration response message waiting state; When a location registration response message is received from the HLR (Home Location Register) in the location registration response standby state, the signal link type is analyzed to determine whether the signal link type that receives the location registration response message is an analog signal link or a digital signal link. Seventh step (71 to 73); And as a result of the determination of the seventh step (71 to 73), in the case of an analog signal link, generates a MAP (Mobile Application Part) location registration response message according to the analog mobile telephone network protocol type; Eighth, after generating the MAP location registration response message according to the digital mobile phone network protocol, analyzing the generated MAP location registration response message to generate subscriber data in the VLR (Visitor Location Register) to complete location registration and transition to the idle state. And a step (61,74 to 76) of the digital mobile telephone network and the analog mobile telephone network. The method of claim 4, wherein the sixth step (65 to 70), when the home HLR of the mobile terminal is an analog HLR, if the location registration request message is to be generated and transmitted to the analog HLR according to IS41A, an analog mobile telephone network protocol. Generating a common line message via ANSI TCAP, ANSI Signaling Connection Control Part (SCCP), ANSI MTP (65,67); If the mobile terminal's home HLR is a code division multiple access method (CDMA) HLR, it is necessary to generate a location registration request message according to the CDMA MAP, which is a digital mobile telephone network protocol, and transmit it to the code division multiple access method (CDMA) HLR. Generating a common line message via a T TCAP, an ITU-T SCCP, an ITU-T MTP (66, 68); And (69, 70) transmitting a location registration request message to the HLR according to a signal point determined when the message is generated and transitioning to a location registration response message waiting state when the message generation is completed. Roaming method of analog mobile telephone network. 6. The method of claim 5, wherein the eighth step (61, 74 to 76) is performed by MAP via ANSI MTP, ANSI SCCP, ANSI TCAP when the location registration response message is received on the American Standards Association (ANSI) type signal link. Generating a location registration response message (74); If the location registration response message is received on an ITU-T type signal link, generating a MAP location registration response message via ITU-T MTP, ITU-T SCCP, and ITU-T TCAP (75). ); And generating (61,76) the subscriber data in the VLR (Visitor Location Register) through the analysis of the generated MAP location registration response message, performing location registration and transitioning to an idle state. Roaming method between telephone network and analog mobile telephone network. 5. The method of claim 4, wherein the second steps (61, 81 to 89), when receiving an incoming call setup request in the idle state, the station number to query the location information of the called subscriber to the home location register (HLR) of the called subscriber; Analyzing a ninth step (61, 81 to 83) to determine whether the HLR of the called terminal is an analog or digital HLR; As a result of the determination in the ninth step (61, 81 to 83), when the HLR of the called terminal is an analog HLR, a call location information request message and a common line message according to the analog mobile telephone network protocol are generated. A tenth step (84 to 87) of generating a destination location information request message and a common line message according to the mobile telephone network protocol; And an eleventh step (88, 89) of transmitting the called location information request message to the HLR (Home Location Register) according to the signal point determined when the message is generated and transitioning to the response waiting state when the receiving location information request message generation is completed. The roaming method of the digital mobile telephone network and the analog mobile telephone network, characterized in that. The method according to claim 7, wherein the tenth step (84 to 87), when the destination terminal HLR is an analog HLR, when the destination location information request message should be generated and transmitted to the analog HLR according to IS41A, an analog mobile telephone network protocol. Generating (84,86) a common line (NO. 7) message via ANSI TCAP, ANSI SCCP, and ANSI MTP in the process; In case of code division multiple access (CDMA) HLR, the call location information request message of CDMA MAP, which is a digital mobile telephone network protocol, needs to be generated and transmitted to the code division multiple access (CDMA) HLR. And a step (85,87) of generating a common line (NO.7) message via an SCCP and an ITU-T MTP. The method according to any one of claims 1 to 8, wherein the third steps (61, 90 to 106), when receiving a call location information request message transmitted from the VLR (Visitor Location Register) of the MSC to the HLR during call setup; The mobile communication system (12, 61, 90, 91) for analyzing the signal link type and determining whether the signal link type receiving the message is an analog signal link or a digital signal link; As a result of the determination in the twelfth step (61, 90, 91), in case of an analog signal link, a MAP destination location information request message is generated according to an analog mobile telephone network protocol; in the case of a digital signal link, a MAP according to a digital mobile telephone network protocol is generated. A thirteenth step (92, 93) for generating a destination location information request message; A fourteenth step (94 to 96) of analyzing the generated MAP called location information request message and analyzing the destination of the called subscriber to combine and determine the location of the called subscriber and the type of the received message; As a result of the determination of the fourteenth step (94 to 96), when the called subscriber is located in the digital mobile telephone network and the received message is a digital mobile telephone network protocol message, a called location response message and a common line message according to the digital mobile telephone network protocol are generated. A fifteenth step (97,104 to 106) for transmitting to the MSC; If the called subscriber is located in the digital mobile telephone network and the received message is not a digital mobile telephone network protocol message, the routing subscriber requests a message according to the analog mobile telephone network protocol. And a sixteenth step (98 to 103) of generating a common line (NO.7) message according to the location of the request and transmitting the routing information to the visitor location register (VLR). Roaming method of analog mobile telephone network. 10. The method according to claim 9, wherein the thirteenth step (92, 93), when the destination location information request message is received in a signal link of the American National Standards Institute (ANSI) type, MAP incoming through ANSI MTP, ANSI SCCP, ANSI TCAP Generating a location information request message (92); And when the called location information request message is received on an ITU-T type signal link, generating a MAP called location information request message through ITU-T MTP, ITU-T SCCP, and ITU-T TCAP. And a step (93). A method of roaming between a digital mobile telephone network and an analog mobile telephone network. 11. The method of claim 10, wherein the fifteenth steps (97, 104 to 106) are performed when the called subscriber is located in a code division multiple access (CDMA) mobile telephone network and the received message is a CDMA MAP message which is a digital mobile telephone network protocol. Generating a called location response message according to the telephone network protocol (97); Generating 104 a common line message via an ITU-T TCAP, an ITU-T SCCP, and an ITU-T MTP L3 after generating a called location response message according to the digital mobile telephone network; And transmitting (105, 106) the incoming location response message to the MSC that has sent the called location information request message and transitioning to the called location request response standby state. 12. The routing information request message according to IS41A according to claim 11, wherein the sixteenth steps (98 to 103) are analog mobile telephone network protocols if the called subscriber is located in the digital mobile telephone network and the received message is not a digital mobile telephone network protocol message. Generating 98 and determining the location of the called party; As a result of the determination of the steps (98,99), when the called party is located in the analog network, it generates a common line (NO.7) message through ANSI TCAP, ANSI SCCP, and ANSI MTP, and the called party accesses code division multiple access. Generating a common line (NO.7) message through an ITU-T TCAP, an ITU-T SCCP, and an ITU-T MTP when located in a CDMA mobile telephone network (100, 101); And requesting routing information by requesting routing information request message to the VLR (Visitor Location Register) in which the called terminal is located and translating to the routing information request response waiting state (102, 103). Mutual roaming method in mobile phone network. The mobile communication system according to claim 9, wherein the fourth steps (61, 111 to 122) receive a message excluding a location registration request message, an incoming call setting request message, and an incoming location information request message in a dormant state. A seventeenth step (111, 112) of determining whether the signal link type receiving the message is an analog signal link or a digital signal link; As a result of the determination of the seventeenth step (111, 112), in the case of an analog signal link, if it is necessary to generate a MAP message according to the analog mobile telephone network protocol, analyze the MAP message to generate a response MAP message and transmit it to the analog network. An eighteenth step (113 to 116) for generating a common line message according to the analog mobile telephone network protocol; As a result of the determination of the fourteenth step (111, 112), in the case of a digital signal link, if it is necessary to generate a MAP message according to the digital mobile telephone network protocol, analyze the MAP message and generate a response MAP message and transmit it to the digital network. A nineteenth step (117 to 120) of generating a common line message according to a digital mobile telephone network protocol; And twenty-stages (121, 122) for transmitting the corresponding response message to the HLR (Home Location Register) and transitioning to a dormant state according to the signal point determined when the message is generated when the message generation is completed. Roaming method of analog mobile telephone network. 15. The method of claim 13, wherein the eighteenth steps (113 to 116), when the message is received on a signaling link of the American National Standards Institute (ANSI) type, generating a MAP message via ANSI MTP, ANSI SCCP, ANSI TCAP (113); Analyzing the generated MAP message and generating a corresponding response MAP message (114, 115); And generating a common line message through ANSI TCAP, ANSI SCCP, and ANSI MTP if it is necessary to transmit the generated response MAP message to the analog network. Mutual roaming method. 15. The method of claim 14, wherein the nineteenth step (117 to 120), if the message is received on a signal link of the International Telecommunication Union (ITU-T) type ITU-T MTP, ITU-T SCCP, ITU-T Generating 117 a MAP message via a TCAP; And analyzing the generated MAP message and generating corresponding response MAP message (118,119); and when the generated response MAP message is to be transmitted to a mobile communication network of code division multiple access (CDMA), ITU-T TCAP, And generating (120) a common line message via an ITU-T SCCP or an ITU-T MTP.