KR20100035050A - System and method for preferred roaming service through network based location registering control - Google Patents

Abstract

The present invention relates to a preferred service provider roaming service system and method through a network-based location registration control, the mobile terminal when roaming to a specific country location registration that includes a business code for the first operator among the roaming operators of the country When the request message is sent to the location registration server, the location registration server that receives the request compares the preferred service provider under management with the first service provider requesting location registration by the mobile terminal, and rejects the location registration if the first service provider is not the preferred service provider. If the operator is the preferred operator, the location registration is allowed. Through this, the present invention can control the location registration to the preferred provider network directly on the network irrespective of the roaming provider information set in the mobile communication terminal.

Description

System and Method for Preferred Roaming Service through Network Based Location Registering Control}

The present invention relates to a mobile communication roaming service, and more particularly, to a roaming service system and a method for controlling location registration directly to a preferred provider network on a network regardless of roaming service provider information set in a mobile communication terminal.

Wideband Code Division Multiple Access (WCDMA) is one of the third-generation mobile communication technology standards that followed the second-generation GSM. Technically, WCDMA is a broadband spread-spectrum mobile radio that uses direct sequence code division multiple access (Direct-Sequence CDMA) to support higher speeds and more users than the time division multiple access (TDMA) scheme used in second generation GSM networks. Interface.

In case of roaming service in WCDMA, a service provider access scenario of a subscriber station is performed by dividing and scanning the entire WCDMA frequency domain by a specific frequency domain, and then performing detailed scanning on the channels of each partition region, and then frequency The roaming service provider is selected by the strength of the signal or the preferred service provider stored in the terminal to perform location registration.

That is, the conventional WCDMA roaming service roams to an unspecified carrier regardless of the intention of the subscriber or home operator in the automatic mode, or roams when the update of the preferred operator added and changed after the subscriber is not 100% guaranteed. To perform. However, in the case of WCDMA, there are generally a large number of operators in one country, and the roaming charges are different for each operator. Therefore, even if the subscriber station attempts to register the location as a specific roaming service provider because the strength of the frequency signal is strong or registered in the preferred service provider list, the home service provider may prefer another roaming service provider due to roaming charges or roaming quality. In this case, it is necessary to select a preferred service provider regardless of the roaming service provider set in the subscriber terminal, but the conventional roaming service does not perform such a function.

Accordingly, an object of the present invention is to provide a roaming service system and method capable of controlling location registration directly to a preferred provider network on a network regardless of roaming provider information set in a mobile communication terminal.

In order to achieve the above object, the preferred operator roaming service system through the network-based location registration control of the present invention transmits a location registration request message including a provider code for a first operator among roaming operators of a specific country when roaming. If the mobile terminal receives the location registration request message from the mobile terminal and manages a second operator different from the first operator as the preferred operator, the mobile terminal rejects the location registration of the first operator and prefers the first operator. If the management is to include a location registration server that allows the location registration of the first operator.

In addition, the location registration server transmits a location registration rejection message to the portable terminal for rejection of the location registration of the first operator, the operator for any one of the roaming operators except for the first operator from the portable terminal The location registration request message including the code is re-received.

In addition, the location registration server according to the present invention stores the service provider code for the preferred operators for each roaming specific country, the operator code for the first provider included in the location registration request message received from the mobile terminal And a location registration performing unit for rejecting or allowing the registration of the location of the first operator by comparing the checked first preferred operator with the preferred operator managed by the operator management unit.

The apparatus may further include a failure count management unit that calculates at least one of the number and ratio of location registration failures of the portable terminal.

In addition, the location registration performing unit is a second operator different from the first operator included in the location registration request message is the preferred operator managed by the operator management unit and the location registration failure of the mobile terminal as a result of the calculation of the failure count management unit; When the number of times is less than the threshold characterized in that the location registration rejection message is sent to the mobile terminal.

In addition, the location registration performing unit is a second operator different from the first operator included in the location registration request message is the preferred operator managed by the operator management unit and the location registration failure of the mobile terminal as a result of the calculation of the failure count management unit; When the number of times exceeds the threshold, it is characterized in that the location registration to the first operator is allowed.

In addition, the location registration performing unit allows the location registration to the second provider if the preferred operator managed by the operator management unit is the same as the second provider included in the re-received location registration request message.

In addition, the preferred operator roaming service method through the network-based location registration control of the present invention, the location registration request message including a provider code for the first operator among the roaming operators of a specific country from the mobile terminal when roaming in the location registration server In the receiving step, the location registration server transmits a location registration rejection message to the portable terminal if the second operator and the second operator different from the first operator is managed, the location registration server is the first operator; If it is managed as a preferred operator, the step of allowing the location registration of the mobile terminal.

Further, after transmitting the location registration rejection message to the mobile terminal, the location registration server includes a location registration request message including a provider code for any one of the roaming operators except the first operator from the portable terminal. Characterized in that it further comprises the step of receiving again.

The transmitting of the location registration rejection message to the portable terminal may include: transmitting the location registration rejection message to the portable terminal; storing the number of transmissions of the location registration rejection message to the portable terminal; Calculating a number of location registration failures and calculating a ratio of the number of location registration failures from the number of location registration failures if the second operator is managed as the preferred operator.

The transmitting of the location registration rejection message to the portable terminal is characterized in that the location registration server transmits the location registration rejection message to the portable terminal when the number of location registration failures of the portable terminal is less than or equal to a threshold. .

Further, after calculating the ratio of the number of location registration failures, the number of location registration failures of the mobile terminal exceeds a threshold even if the location registration server manages a second operator different from the first service provider as the preferred service provider. If the state is characterized in that it further comprises the step of allowing the location registration to the first business.

The location registration server is the same as the second provider included in the location registration request message received by the preferred provider from the mobile terminal after receiving the location registration request message including the provider code for the second provider. The method may further include allowing location registration of the mobile terminal.

According to the present invention, when providing a mobile communication roaming service, a roaming service provider having a low roaming fee or a superior roaming quality may be selected through a network level control rather than a mobile communication terminal level.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing the embodiments, descriptions of technical contents that are well known in the technical field to which the present invention belongs and are not directly related to the present invention are omitted. This is to more clearly communicate without obscure the core of the present invention by omitting unnecessary description.

1 is a system diagram showing a main configuration of a system for performing location registration of a mobile terminal when roaming according to an embodiment of the present invention. 2 is a configuration diagram showing the main configuration of the location registration server shown in FIG.

1 and 2, a system 100 for performing location registration of a mobile terminal when roaming according to an embodiment of the present invention may include a mobile terminal 110, a first operator 120, and a second operator 130. ), A location registration server 140, a location register 150.

The mobile terminal 110 generates a location registration request message including a provider code for any one of a plurality of operators existing in a country corresponding to a specific country for initial location registration when roaming to a specific country. The mobile terminal 110 transmits the generated location registration request message to the service provider corresponding to the service provider code. At this time, the operator corresponding to the operator code included in the location registration request message for the initial location registration is named as the first operator (120).

The mobile terminal 110 is equipped with a Universal Subscriber Identity Module (USIM) card, and the preferred carrier list is stored in the USIM card. In this case, the preferred service provider list may update the roaming settlement fee between the preferred service providers and the operators newly added after the subscriber opening of the mobile terminal 110.

More specifically, the mobile terminal 110 requests location registration in the following manner for initial location registration when roaming.

First, the mobile terminal 110 temporarily stores a list of operators sequentially from a plurality of roaming operators existing in a country to roam, starting from a carrier having the strongest frequency signal (hereinafter referred to as a first provider 120). . In addition, the mobile terminal 110 transmits a location registration request message including the operator code of the first operator 120 to the first operator 120.

Secondly, the mobile terminal 110 requests a registration request message including a business code of a business operator (hereinafter, the first business operator 120) that is the highest in the preferred business operator list stored in the USIM card. To send).

In addition, when the mobile terminal 110 receives the location registration rejection message from the location registration server 140 through the first service provider 120 after transmitting the first location registration request message to the first service provider 120, the first service provider. A location registration request message is sent to the second provider 130 except for 120, and the location registration request message is transmitted to the second provider 130. In this case, the second service provider 130 is the first service provider 120 existing in the service provider list next to the strongest signal strength (hereinafter referred to as the second service provider 130) or the first carrier in the preferred carrier list stored in the USIM card The following companies (hereinafter referred to as the second company 130) are shown below.

The first operator 120 and the second operator 130 refer to a mobile switching center (MSC) operated by roaming operators existing in a specific country in which the mobile terminal 110 intends to roam. Receive a location registration request message from) and transmits to the location registration server (140). Therefore, after the location registration of the mobile terminal 110 is performed, the first service provider 120 and the second service provider 130 are connected to another mobile terminal for communication with the mobile terminal 110 and another mobile terminal ( It forms a call session with (not shown), controls voice calls and various additional services, and provides a connection function with various other devices and external networks.

The location registration server 140 is a gateway location register (GLR), which is a roaming gateway system that enables roaming services between operators, and a location registration request message from the mobile terminal 110 through the first and second providers 120 and 130. Received, and if the state that manages the same operator as the first operator 120 as the preferred operator allows the location registration with the first operator 120, and the second operator 130 and other second operator 130 If the status is being managed as a preferred operator, the location registration to the first operator 120 is rejected.

To this end, the location registration server 140 includes a national management unit 141, a business operator management unit 142, a failure count management unit 143, a location registration performing unit 144.

The national management unit 141 manages a country code of a roaming possible country. That is, the country manager 141 recognizes where the country in which the mobile terminal 110 has roamed, and provides the country code to the operator manager 142.

The operator management unit 142 manages a provider code for a roamable operator with the mobile terminal 110 among the operators existing in a specific country stored by being mapped to a country code provided by the national management unit 141 as a preferred operator. That is, the operator management unit 142 extracts the operator codes of the first and second operators 120 and 130 included in the location registration request message and provides them to the location registration execution unit 144. In this case, the preferred operator is the operator management unit 142 in order to provide to the customer to perform a roaming service providers with a mobile terminal 110 is subscribed to a lower call rate and roaming charges and better call quality to improve customer satisfaction ) To manage it.

The failure count management unit 143 calculates the number of location registration failures of the mobile terminal 110 and calculates a failure rate with respect to the number of location registration failures from the number of location registration failures.

The location registration performing unit 144 requests the location registration unit 150 to register the location as a business operator extracted from the business operator management unit 142, and the extracted business operator is the first business operator 120 and managed by the business management unit 142. If the preferred operator is not the first operator 120, the location registration performing unit 144 does not request the location registration to the location register 150, but generates a location registration rejection message to the first provider 120 to the mobile terminal ( 110). Subsequently, the location registration performing unit 144 includes a second business operator 130 included in the location registration request message resent from the mobile terminal 110 and a preferred service provider managed by the business operator management unit 142. 130, the location registration performing unit 144 requests the location registration unit 150 to register the location to the second operator 130.

In addition, the location registration performing unit 144 is a preferred operator managed by the operator management unit 142, the operator who wants to perform the location registration at the time exceeding the threshold value when the accumulated number of location registration failure of the mobile terminal 110 exceeds the threshold value If not, the location registration is performed with the business operator for which location registration is requested. That is, although the location registration rejection from the mobile terminal 110 to the first operator 120 exceeds the threshold, when the location registration is requested to the first operator 120, the preferred operator being managed by the operator management unit 142 is determined. Even in the second business operator 130, the location registration to the first business operator 120 is performed.

The location register 130 is a home location register (HLR) and manages subscriber information, location information, and the like of the mobile terminal 110. In addition, the location register 150 completes the location registration of the mobile terminal 110 as a service provider corresponding to the provider code included in the location registration request message transmitted from the location registration server 140.

3 is a flowchart illustrating a procedure for performing location registration of a mobile terminal when roaming according to an embodiment of the present invention.

1 to 3, when the international roaming to a specific country in step S301, the mobile terminal 110 requests the location registration to the first operator 120 and attempts to register the location with the first operator 120. . The mobile terminal 110 generates a location registration request message including a business code for the first business operator 120 for location registration to the first business operator 120, and then registers the location server 140 through the first business operator 120. To send). In this case, the first operator 120 may be set based on the frequency signal strength, and may be set based on the preferred operator stored in the USIM card.

In step S302, the operator management unit 142 of the location registration server 140 extracts the provider code of the first provider 120 included in the location registration request message and provides it to the location registration performing unit 144. The location registration performing unit 144 determines whether the first business operator 120 included in the location registration request message and the preferred service provider managed by the business operator managing unit 142 are the same. As a result of the determination in step S302, the location registration performing unit 144 proceeds to step S308 when the first operator 120 included in the location registration request message is the same as the preferred service provider managed by the location registration server 140, and the same. If not, proceed to step S303.

If the first operator 120 included in the location registration request message is not the preferred operator managed by the operator management unit 142, the failure count management unit 143 of the location registration server 140 is located in the mobile terminal 110 in step S303. It is determined whether the number of registration failures exceeds a threshold. In this case, the location registration failure count of the mobile terminal 110 is preferably stored in the failure count management unit 143 by accumulating the number of location registration failures whenever the location registration request of the mobile terminal 110 is rejected.

As a result of the determination in step S303, if the number of location registration failures of the mobile terminal 110 exceeds the threshold, the location registration server 140 proceeds to step S308, and if the number of failures of location registration is less than or equal to the threshold, the step proceeds to step S304. At this time, the threshold of the number of failures is preferably set by the operator to which the mobile terminal 110 is subscribed in order to prevent waste of time consumed at the time of location registration, and is generally set to about one to two times.

The location registration performing unit 144 of the location registration server 140 at step S304 rejects the location registration of the mobile terminal 110 requested to the first operator 120, and at step S305, registers the location of the location registration server 140. The performer 144 transmits a delete command to the first operator 120 to temporarily delete the first operator 120 from the operator list temporarily stored in the mobile terminal 110 or the preference list stored in the USIM card. As such, if the first operator 120 requested for location registration is not the preferred operator managed by the operator manager 142, the location registration server 140 does not request the location registration to the location register 150, and registers the location. The server 140 itself refuses to register the location with the first operator 120.

Subsequently, in step S306, the first operator 120 transmits the deletion command and the location registration rejection message of the first operator 120 transmitted from the location registration server 140 to the mobile terminal 110, and the deletion command and the location registration. The mobile terminal 110 receiving the rejection message proceeds to step S307. In step S307, the mobile terminal 110 deletes the first operator 120 from the list of operators or the preferred operators stored in the USIM card according to the strength of the frequency signal temporarily stored in step S301, and registers the location as the second operator 130 In order to attempt to generate a location registration request message containing the operator code of the second operator 130 and returns to step S302.

On the contrary, according to the determination result of the step S302, the first or second operators 120 or 130 corresponding to the operator codes included in the location registration request message are in the same state as the preferred operators managed by the location registration server 140. In step S308, the location registration server 140 requests the location registration unit 150 to register the location with the first business operator 120 or the second business operator 130 where the location registration request message has been transmitted. If the location registration between the mobile terminal 110 and the first operator 120 or the second operator 130 is allowed from the location register 150, the location registration server 140 proceeds to step S309. In addition, if the number of failures of location registration for the mobile terminal 110 exceeds the threshold value according to the determination result of step S303, the location registration performing unit 144 of the location registration server 140 exceeds the threshold value in step S308. The location register 150 requests a location registration with the first operator 120 to perform roaming at this point. If the location registration between the mobile terminal 110 and the first operator 120 is permitted from the location register 150, the location registration server 140 proceeds to step S309.

Subsequently, in step S309, the location registration performing unit 144 of the location registration server 140 generates a location registration message for notifying the location registration permission and the mobile terminal through the first operator 120 or the second operator 130 ( In step S310, the mobile terminal 110 uses a roaming service after completing location registration with the first operator 120 or the second operator 130.

Although the present invention has been described in detail only with respect to the embodiments, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical spirit of the present invention, and such modifications and modifications belong to the appended claims.

The present invention is applicable to a mobile communication roaming service, and is particularly useful for a technique for selecting a preferred roaming operator through control of a network level rather than a mobile terminal level.

1 is a system diagram showing the main configuration of a system for performing location registration of a mobile terminal when roaming according to an embodiment of the present invention.

2 is a configuration diagram showing the main configuration of the location registration server shown in FIG.

3 is a flowchart illustrating a procedure for performing location registration of a mobile terminal when roaming according to an embodiment of the present invention.

Brief description of the main parts of the drawing

110: mobile terminal 120, 130: first and second operators

140: location registration server 150: location register

Claims (13)

A mobile terminal for transmitting a location registration request message including a provider code for a first operator among roaming operators of a specific country when roaming; Receiving the location registration request message from the mobile terminal, if the second operator and other second operators are managed as the preferred carrier, the location registration of the first operator is rejected, and the first operator is managed as the preferred carrier A location registration server to allow location registration of the first operator, if any; Preferred operator roaming service system through a network-based location registration control comprising a. The method of claim 1, The location registration server transmits a location registration rejection message to the portable terminal for rejecting the location registration of the first operator, and transmits a business code for any one of roaming operators except the first provider from the portable terminal. The preferred operator roaming service system through the network-based location registration control, characterized in that the location registration request message comprising a re-receive. A provider management unit for storing and managing a provider code for a preferred provider for each roaming specific country; Check the operator code for the first provider included in the location registration request message received from the mobile terminal, and compares the confirmed first operator with the preferred operator managed by the operator manager to register the location of the first operator. Location registration performing unit to refuse or allow; Location registration server comprising a. The method of claim 3, A failure count management unit for calculating at least one of a number and a failure rate of location registration of the portable terminal; Location registration server, characterized in that it further comprises. The method of claim 4, wherein The location registration performing unit If the preferred operator managed by the operator management unit is a second operator different from the first operator included in the location registration request message and the calculation result of the failure count management unit indicates that the location registration failure count of the mobile terminal is less than or equal to the threshold value, the location registration is performed. Location registration server, characterized in that for transmitting a rejection message to the mobile terminal. The method of claim 4, wherein The location registration performing unit If the preferred operator managed by the operator management unit is a second operator different from the first operator included in the location registration request message and the calculation result of the failure count management unit exceeds the threshold, Location registration server, characterized in that to allow registration of the location as a first operator. The method of claim 4, wherein The location registration performing unit If the preferred operator managed by the operator management unit is the same as the second provider included in the re-received location registration request message, the location registration server, characterized in that for allowing the location registration to the second operator. Receiving a location registration request message including a business code for a first business operator among roaming operators of a specific country from a mobile terminal when roaming; Transmitting a location registration rejection message to the portable terminal if the location registration server manages a second service provider different from the first service provider; Allowing the location registration server to register the location of the mobile terminal if the first service provider is managed as the preferred service provider; Preferred operator roaming service method through a network-based location registration control comprising a. The method of claim 8, After sending the location registration rejection message to the mobile terminal Receiving, by the location registration server, a location registration request message including a provider code for any one of the roaming operators except the first operator from the portable terminal; The preferred operator roaming service method through the network-based location registration control, characterized in that it further comprises. The method of claim 8, Sending the location registration rejection message to the mobile terminal The location registration server stores the number of times of the location registration rejection message sent to the mobile terminal, and if the first operator and a second operator included in the location registration request message received from the mobile terminal as the preferred operator Calculating a number of location registration failures and calculating a ratio of the number of location registration failures to the number of location registration failures. The method of claim 10, Sending the location registration rejection message to the mobile terminal And the location registration server transmits the location registration rejection message to the portable terminal if the number of location registration failures of the portable terminal is less than or equal to a threshold. The method of claim 10, After calculating the ratio of the number of location registration failure Allowing location registration as the first operator if the location registration failure count of the mobile terminal exceeds a threshold even though the location registration server manages a second operator different from the first operator as the preferred operator; The preferred operator roaming service method through the network-based location registration control, characterized in that it further comprises. 10. The method of claim 9, After receiving the location registration request message including the provider code for the second provider again Allowing the location registration server to register the location of the mobile terminal if the preferred service provider is the same as the second service provider included in the location registration request message re-received from the mobile terminal; The preferred operator roaming service method through the network-based location registration control, characterized in that it further comprises.

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