KR101426233B1 - System and method for rejecting call of different mobile communication network subscriber - Google Patents

System and method for rejecting call of different mobile communication network subscriber Download PDF

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Publication number
KR101426233B1
KR101426233B1 KR1020080044432A KR20080044432A KR101426233B1 KR 101426233 B1 KR101426233 B1 KR 101426233B1 KR 1020080044432 A KR1020080044432 A KR 1020080044432A KR 20080044432 A KR20080044432 A KR 20080044432A KR 101426233 B1 KR101426233 B1 KR 101426233B1
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South Korea
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call
received
network
party network
subscriber
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KR1020080044432A
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Korean (ko)
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KR20090118563A (en
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김진식
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에스케이텔레콤 주식회사
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Priority to KR1020080044432A priority Critical patent/KR101426233B1/en
Publication of KR20090118563A publication Critical patent/KR20090118563A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/18Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/436Arrangements for screening incoming calls, i.e. evaluating the characteristics of a call before deciding whether to answer it
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W60/00Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices
    • H04W88/022Selective call receivers
    • H04W88/023Selective call receivers with message or information receiving capability

Abstract

The present invention relates to a third party network subscriber call rejection system and method for preventing a call from entering a roaming contract from a third party network subscriber.
For this purpose, the present invention manages the identification information of a third party network that does not have a roaming agreement while the third party network subscriber call rejection system implemented in the access network terminal services the same area as the access network node, When a subscriber station receives a call attempting to originate a call by tuning to a frequency channel of its network that is serving the same area as a third party network in order to process an emergency call, the called party uses the network identification information included in the received call to make the roaming agreement If the non-originated network subscribers are identified as originating calls, all other calls except voice / VoIP calls to handle emergency calls are rejected, and the remaining calls except the emergency calls among the outgoing calls of the non-roaming subscribers without roaming agreement It is possible to prevent entry into the core network end, If the number of rejections mapped to the corresponding network identification information exceeds the threshold number of times, the third-party network subscriber terminal that originated the call issues a call with PLMN not allowed (PLMN not allowed) And transmits a failure message.
Accordingly, it is possible to prevent a call from being routed from a non-roaming subscriber terminal that does not have a roaming agreement to an end of a core network other than a voice / VoIP call for processing an emergency call, It is possible to prevent the call from being unnecessarily retried at the terminal.
Access network, MCC, MNC, operator division serial number, refusal

Description

TECHNICAL FIELD [0001] The present invention relates to a system and a method for rejecting a third party network subscriber call,

The present invention relates to a third party network subscriber call rejection system and method, and more particularly, to a third party network subscriber call rejection system and method for preventing a call from a third party network subscriber who has not signed a roaming agreement.

In general, a Wideband Code Division Multiple Access (WCDMA) terminal stores a channel list of a WCDMA network as well as a channel list of a provider network to which a subscriber identity module (USIM) card is subscribed.

Accordingly, even if the first provider network and the second provider network that are serving the same area do not make roaming agreements, the WCDMA terminal can access the core network of the first provider network to which the WCDMA terminal belongs, (112, 113, 119, etc.) when a failure occurs in the base station of the first network or the base station of the first network is temporarily unavailable due to a system check or update, In addition to the currently used frequency, it is implemented to search for the frequency allocated to the second business network that is serving the same area and to transmit an emergency call to the second business network.

Accordingly, in the WCDMA network, in order to deal with the emergency call of non-roaming third party network subscribers even when the roaming contract is not established, each provider network receives the call attempted by the third party network subscriber station that failed to access the base station, When the mobile communication terminal fails to connect to the base station due to a failure in its network, the mobile communication terminal attempts to originate the location registration or general voice call and data call to the third party network in addition to the emergency call.

Also, in the CDMA network, even if the same area is served, if the roaming agreement is not established between the two providers, the connection of the third party network subscriber station is not allowed for the emergency call, but there is a third party network subscriber station abnormally connected.

Accordingly, in a mobile communication network receiving a large amount of location registration, voice call, and data call attempted by a third party network subscriber station that failed to access the base station due to a failure occurring in the third party network, It is necessary to reject the location registration or the general voice call and the data call except for the emergency call. In the related art, after identifying the calling number at the core network, if the calling terminal is confirmed as a third party network subscriber terminal, It is implemented to reject the location registration except for the general voice call and data call.

As described above, the core network terminal discriminates a call attempted from a third-party network subscriber terminal that has failed to access the base station due to a failure occurring in a third party network, and rejects a location registration, a general voice call, a data call, When a location registration call, a general voice call, a data call, etc., attempted by a third-party network subscriber station which has failed to access the base station due to a failure occurring in a third party network, is introduced in a large amount, , General voice call, and data call, there is a risk of occurrence of a series failure due to overloading to the entire mobile communication network including the core network.

In addition, conventionally, in the core network node, a call received from a third party network subscriber terminal is identified, and the call is rejected for a location registration call, a general voice call, and a data call except an emergency call, Message, and the reason for rejection included in the call failure message is set as a network failure and transmitted.

Meanwhile, the third-party network subscriber station having received the call failure message in which the reason for rejection is set to network failure confirms the rejection reason (network failure) included in the call failure message, and then tries again.

As described above, there is a problem in that, after receiving a call failure message at a third party network subscriber terminal, a lot of attempts are repeatedly made for a location registration call, a general voice call, and a data call.

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above-mentioned problems, and it is an object of the present invention to provide a method and apparatus for preventing a roaming- (MCC) and MNC (Mobile Network Code), or a service sector serial number, to access the remaining calls except for voice / VoIP calls for handling emergency calls among the outgoing calls of the third party network subscriber who does not make a roaming contract And to provide a third party network subscriber call rejection system and method capable of rejecting processing at a network end.

Another object of the present invention is to provide a method and apparatus for managing MCCs and MNCs allocated to a third party network that does not establish a roaming contract in an access network or a core network node and if the call including the MCC and the MNC is rejected more than the threshold number of times , A call failure message in which the reason for rejection is set as 'PLMN not allowed' is transmitted to the third-party network subscriber terminal that originated the call including the MCC and the MNC, and the third- To prevent retrying.

According to an aspect of the present invention, there is provided a third party subscriber call rejection system, which is implemented in an access network terminal, A memory unit for managing identification information of a third party network serving the same area as the access network unit; Analyzing the network identification information included in the received call and the received call to transmit the received call to the core network terminal only when the received call is a voice call, And a call processing unit for rejecting all calls in the case of a call other than a call, and the memory unit stores a list of denials in which identification information of a third party network that is in the same area as the access network unit but is not roaming agreement is registered Wherein the call processing unit increases the number of rejections stored in the rejection list by 1 when the received call is rejected and matches the network identification information included in the received call, It is determined whether the number of rejections exceeds a preset threshold number, Transmits a call failure message to the terminal of the third party network subscriber whose PLMN (PLMN not allowed) is set to 'PLMN not allowed' if the predetermined number of times is exceeded, and if the number of rejections does not exceed the predetermined threshold number (PLMN not allowed) ', the reason for rejection is' Network Failure' to the terminal of the third party network subscriber, and the call failure message set to 'PLMN not allowed' It is preferable that the third party network subscriber station is used to prevent re-transmission through the channel used for the call origination.

Further, the call processing unit may use the network identification information included in the received call to check whether the received call is a call originated by a third party network subscriber who does not make a roaming agreement, and if the received call is a third party When the call is a call originated by the network subscriber, the call is analyzed and the call is delivered to the core network only when the call is a voice call. If the call is a call other than a voice call, the call is rejected Do.

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The rejection list includes an MCC (Mobile Country Code) included in an International Mobile Station Identity (IMSI) assigned to a subscriber terminal of a third party network that is in the same area as the access network and does not have a roaming agreement, Network Code) are preferably registered.

Also, it is preferable that, in the refusal list, the service sector serial numbers included in the TMSI (Temporary Mobile Subscriber Identity) allocated to the subscriber terminal of the third party network which is in the same area as the access network but does not have the roaming agreement is registered .

Meanwhile, the call processing unit may confirm whether the received call is a call originated by a third party network subscriber who has not made a roaming agreement, using the MCC and the MNC included in the IMSI, which is the mobile communication related identification number of the received call.

Preferably, the call processing unit identifies a call originated by a third party network subscriber for which the received call has not been roamed, using the carrier identification serial number included in the TMSI, which is the mobile communication related identification number of the received call.

Further, if the received call is a voice call, the call processing unit classifies the received voice call as a normal voice call or an emergency voice call and rejects the received voice call if the received call is a normal voice call. If the received voice call is an emergency voice call, .

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The call processing unit may analyze the incoming call and transmit the incoming call to the core network terminal only when the incoming call is a VoIP call, if the incoming call is identified as a call originated by a non-roaming subscriber who does not make a roaming agreement, If the received call is a call other than a VoIP call, it is preferable to reject all calls.

Further, if the received call is a VoIP call, the call processing unit classifies the received VoIP call as a normal VoIP call or an emergency VoIP call, rejects the call in case of a normal VoIP call, and transmits the rejected call to the core network end in case of an emergency VoIP call .

Meanwhile, a third party network subscriber call rejection method in a third party network subscriber call rejection system according to an exemplary embodiment of the present invention is a method of rejecting a third party network subscriber call rejection method in a third party network subscriber call rejection system implemented in an access network terminal, A registration process of registering the identification information of the third party network in which the third party network is registered; Determining whether the received call is a call originated by a third party network subscriber using network identification information included in the received call when the call is received from a third party network subscriber; If the received call is a call originated by a third party network subscriber, it is checked whether the received call is a voice call, and if the received call is a voice call, the call is delivered to the core network. If the received call is not a voice call And a call process for rejecting the received call.

Further, the registration process includes a process of registering identification information of a third party network that is in the same area as the access network unit but does not make a roaming agreement in the memory unit of the third party network subscriber call rejection system implemented in the access network unit , The checking step checks whether the call is a call originated by a third party network subscriber who does not make a roaming agreement using the network identification information included in the received call when receiving a call originated by a third party network subscriber Wherein the call processing includes checking if the received call is a voice call if the received call is identified as a call from a non-roaming subscriber who does not make a roaming agreement, and if the received call is a voice call, And transmits the received call to the core network end, Wherein the registration process includes storing a rejection list in which identification information of a third party network that is in the same area as the access network but is not roaming is registered, Wherein the call processing comprises: increasing the number of rejections stored in the reject list by 1 when the received call is rejected; matching the network identification information included in the received call; Determining whether the number of rejections during a time designated by the user exceeds a preset threshold value; Transmitting a call failure message set to 'Network Failure' to the terminal of the third party network subscriber if the rejection number does not exceed the preset threshold value; If the number of rejections exceeds a predetermined threshold value, transmitting a call failure message set to 'PLMN not allowed' to the terminal of the third party network subscriber, the reason for rejection being 'PLMN not allowed' And a call failure message in which the reason for rejection is set to 'PLMN not allowed' is preferably used to prevent the third party network subscriber station from being redirected through the channel used for making the call .

Further, the checking process may include extracting an MCC and an MNC from an IMSI, which is a mobile communication related identification number included in the received call; And checking whether the received call is a call originated by a third party network subscriber who does not make a roaming agreement using the extracted MCC and the MNC.

The checking step may include extracting a service sector serial number from the TMSI, which is a mobile communication related identification number included in the received call; And confirming whether the received call is a call originated by a third party network subscriber who has not concluded the roaming agreement using the extracted service sector serial number.

If the received call is a voice call, it is checked whether the received voice call is an emergency voice call. If the received voice call is a normal voice call, the call rejection processing is performed. If the received voice call is an emergency voice call, desirable.

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According to the third-party network subscriber call rejection system and method of the present invention, when an outgoing call is received from a third-party network subscriber terminal that fails to connect to the base station due to a failure occurring in a third-party network without roaming agreement, Except for voice / VoIP calls for handling emergency calls from calls received from non-roaming subscribers who do not have roaming agreements by referring to the Mobile Country Code (MCC) and Mobile Network Code (MNC) It is possible to prevent the location registration call, the data call, the SMS call, etc. from the third party network subscriber terminal from climbing to the core network edge.

Accordingly, it is possible to prevent an overload from occurring at the core network end due to an outgoing call of a third party network subscriber terminal that is inflated due to a failure occurring in a third party network, and to prevent a domino type failure that may occur in the entire mobile communication network .

In addition, the present invention manages MCCs and MNCs allocated to non-roaming networks that do not have roaming agreements, and rejects more than a threshold number of times during a call-in time from a terminal of a third party network to which MCCs and MNCs are allocated, The PLMN (PLMN not allowed) message is transmitted to the third-party network subscriber terminal that originated the call, and the third-party network subscriber station having received the call failure message transmits the call reject message to the third- Can not be retried.

Hereinafter, a third party network subscriber call rejection system and method according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The third party network subscriber rejection system according to the present invention is implemented in an access network terminal, and after a third-party network subscriber station not having a roaming agreement fails to connect to a base station, an outgoing call attempted in synchronization with a frequency channel of a first- Which are not voice / VoIP calls for emergency call processing, are rejected to the core network side by rejecting location registration calls, data calls, and SMS calls except voice / VoIP calls for emergency call processing. A Base Station Controller (BSC) of a CDMA network, a Radio Network Controller (RNC) of a WCDMA network, a Radio Access Station (RAS) or an Access Control Router (ACR) of a Wibro network, a BSC , An RNC of the 3GPP-defined ALL-IP network, or the like.

FIG. 1 schematically illustrates a configuration of a third party network subscriber call rejection system according to an embodiment of the present invention. In an embodiment of the present invention, when a third party network subscriber call rejection system is implemented in an RNC of a WCDMA network, Explain.

In FIG. 1, a BS matching unit 210 matches a BS (not shown) and exchanges data.

The memory unit 220 stores the network identification information used to identify the carriers that do not establish roaming agreements among providers providing the same kind of mobile communication service in the same area, in the reject list.

In the embodiment of the present invention, as the network identification information, the service sector serial number included in the MCC (Mobile Country Code), the MNC (Mobile Network Code), and the TMSI (Temporary Mobile Subscriber Identity) included in the International Mobile Station Identity I will use it.

FIG. 2 shows the structure of an IMSI applied to the present invention, and includes an MCC, an MNC, and a Mobile Station Identifier Number (MSIN).

Here, the MCC is used to distinguish each country, and is made up of three digits (for example, Korea = 450, Japan = 440, China = 460, etc.) in order to assign a unique number to each country. The MNC is used for distinguishing networks within each country, and is used to identify multiple networks within a country using the same MCC, and is composed of two or three digits (for example, Network = 00, 04, second network = 05, third network = 06, 08, etc.).

Accordingly, although the memory unit 220 serves the same area as the RNC (not shown), the MCC and the MNCs included in the IMSI allocated to the subscriber terminal (not shown) of the non-roaming network without the roaming agreement are registered The list is being saved.

FIG. 3 is a diagram illustrating an example of a rejection list applied to an embodiment of the present invention. The MCC and the MNC included in an IMSI allocated to a subscriber terminal (not shown) of a third party network .

For example, if the first provider network, the second provider network, and the third provider network serve the same area but the second provider network does not establish a roaming agreement with the first provider network and the third provider network, The MCC and the MNC included in the IMSI allocated to the subscriber terminals of the first provider network and the second provider network are stored in the memory unit 220 of the third party network subscriber call rejection system implemented in the access network of the provider network.

In addition, the above-described list of rejection includes a list of providers classified in the Temporary Mobile Subscriber Identity (TMSI) assigned to a subscriber terminal (not shown) of a third party network that is serving the same area as an RNC (not shown) The numbers are registered.

FIG. 4 is a view showing an example of a reject list applied to another embodiment of the present invention. In the list, a MCC and an MNC included in an IMSI allocated to a subscriber terminal (not shown) of a third party network In each MCC and MNC, the number of rejected calls including the corresponding MCC and MNC is stored during a predetermined time from the operator. For example, when the designated time is designated as 1 hour by the operator, the call rejected in 1 hour is counted and stored. On the other hand, the number of counts is discounted for calls that exceed one hour, which is the designated time in the counted calls.

Meanwhile, the CS (Circuit Service) call processing unit 230 receives and processes the CS call, and if the received CS call is a CS call attempted by the third party subscriber terminal, identifies the mobile communication related identification number included in the received CS call If the mobile communication related identification number included in the received CS call is IMSI, the MCC and the MNC included in the IMSI are extracted, and the reject list stored in the memory unit 220 is extracted from the extracted MCC and MNC If the same MCC and MNC as the extracted MCC and MNC are present in the reject list, the type of the received CS call is detected and transmitted to the core network end only for the voice call. For the location registration call and SMS call except voice call It rejects it immediately.

For example, when the MCC and the MNC extracted from the IMSI included in the received CS call are 450 and 05, respectively, the MCC and the MNC extracted from the IMSI are not included in the reject list of FIG. 3. In this case, CS to the core network end. However, when the MCC and the MNC extracted from the IMSI included in the received CS call are 450 and 06, respectively, the MCC and the MNC extracted from the IMSI are included in the reject list shown in FIG. 3. In this case, And transmits the received CS call to the core network end only when the received CS call is a voice call. In the case of the location registration call and the SMS call except the voice call, the call rejection processing is performed.

If the MCC and the MNC extracted from the IMSI included in the CS call received from the third-party network subscriber terminal are present in the reject list, the CS call processing unit 230 determines the type of the received CS call, The call is rejected for the call and the SMS call and the voice call is again divided into the normal voice call and the emergency voice call and rejected for the normal voice call and the emergency voice call is transmitted to the core network terminal only for the emergency voice call to process the emergency voice call .

When dividing the voice call into the general voice call and the emergency voice call, the CS call processing unit 230 checks the incoming phone number of the received voice call so that the called phone number is an emergency phone number (for example, 112, 113, 119 Etc.), it is determined that the voice call is an emergency call. If the emergency call number is included in the received voice call, the voice call is determined to be an emergency call, and the voice call is transmitted to the core network terminal so that the emergency voice call can be processed.

Meanwhile, the CS call processing unit 230 searches the MCC and the MNC extracted from the IMSI included in the CS call received from the non-roaming 3G subscriber station that has not received the roaming agreement and stored in the memory unit 220, And if the same MCC and MNC as the MNC are present in the reject list, the type of the received CS call is identified, and the received CS call is a location registration call except voice call (or emergency voice call) The number of rejections matched to the previously retrieved MCC and MNC (the number of rejections of the call including the corresponding MCC and MNC during a designated time) is incremented by one, and the number of rejections during the designated time exceeds the predetermined threshold number . If it is determined that the number of rejections for the designated time does not exceed the preset threshold, the CS call processing unit 230 notifies the reason for rejecting the call failure message to the third-party network subscriber terminal that originated the CS call as 'Network Failure' , And if the number of rejections for the designated time exceeds the predetermined threshold number, the reason for rejecting the call failure message to the third-party network subscriber terminal that originated the CS call is referred to as' PLMN not allowed ) &Quot;

For example, assuming that the threshold number of times for a given time is 150 times per hour, the MCC and MNC extracted from the IMSI included in the received CS call are 450 and 08, respectively. If the received CS call is a voice call (198 calls) matched to the MCC and the MNC (450 + 08), as shown in the rejection list of FIG. 4, 150 times). In this case, the reason for rejecting the call failure message is set as 'PLMN not allowed' to the third-party network subscriber terminal that originated the CS call.

Here, the third-party network subscriber station having received the call failure message with the rejection reason set to 'PLMN not allowed' may add the channel used for call origination to the Forbidden PLMN list (Forbidden PLMN List) The corresponding channel is not selected. Accordingly, the third-party network subscriber station that has received the call failure message with the rejection reason set to 'PLMN not allowed' can not re-call the call through the corresponding channel. As described above, the channel added to the forbidden PLMN list can be deleted from the forbidden PLMN list if the terminal user manually selects the corresponding channel.

When the mobile communication related identification number included in the received CS call is TMSI, the CS call processing unit 230 extracts the business entity type serial number included in the TMSI, and then extracts the business entity type serial number from the memory unit 220), and if the serial number of the same company as the extracted serial number of the service provider exists in the reject list, the received CS call is rejected, but the call attempted by the third party network subscriber who has not concluded the roaming agreement In the call, the type of CS call received for emergency call processing is identified, and only the voice call is forwarded to the core network end, and the location registration call and SMS call except the voice call are rejected immediately.

Also, as in the case of the IMSI, if the business entity serial number extracted from the TMSI included in the CS call received from the third-party network subscriber terminal exists in the reject list, the CS call processing unit 230 determines the type of the received CS call For location registration calls and SMS calls except for voice calls, the call is immediately rejected, while the voice call is again divided into a normal voice call and an emergency voice call, rejecting the normal voice call, and transmitting only the emergency voice call to the core network terminal Emergency voice calls can be processed.

Meanwhile, the PS (Packet Service) call processing unit 240 receives and processes the PS call, and if the received PS call is a PS call attempted by the third-party network subscriber station, it identifies the mobile communication related identification number included in the received PS call If the mobile communication related identification number included in the received PS call is the IMSI, the MCC and the MNC included in the IMSI are extracted, and the reject list stored in the memory unit 220 is extracted from the extracted MCC and MNC If the same MCC and MNC as the MCC and MNC that are searched and extracted are present in the reject list, the mobile terminal unconditionally rejects the PS call (location registration call, data call, SMS call, etc.) received from the third party network subscriber terminal.

Then, the MCC and the MNC extracted from the IMSI included in the PS call received from the non-roaming 3G subscriber terminal that does not make the roaming agreement search for the reject list stored in the memory unit 220, and the same MCC and MNC The number of rejections matched to the previously retrieved MCC and MNC (the number of rejections of the call including the corresponding MCC and MNC during a designated time) is incremented by one, It is judged whether or not the number of rejections for a specified time exceeds a predetermined threshold number of times. If the number of rejections for the designated time does not exceed the preset threshold, the PS call processing unit 240 notifies the reason for rejecting the call failure message to the third-party network subscriber terminal that originated the PS call as 'Network Failure' And if the number of rejections for the designated time exceeds the predetermined threshold number, the reason for rejecting the call failure message to the third-party network subscriber terminal that originated the PS call is set to 'PLMN not allowed ) &Quot;

When the mobile communication related identification number included in the received PS call is TMSI, the PS call processing unit 240 extracts the business entity type serial number included in the TMSI, If the service serial number that is the same as the extracted service serial number is found in the reject list, the service provider rejects the PS call received from the third party network subscriber station unconditionally.

The OAM section (Operation and Maintenance) 250 performs functions related to the operation, management, and maintenance of the RNC (not shown).

The PS core network matching unit 260 matches and communicates data with the PS core network (not shown), and the CS core network matching unit 270 matches and communicates with the CS core network (not shown).

Meanwhile, when the third party network subscriber rejection system according to the present invention is implemented in an access network of an IP network such as a 3GPP2-defined ALL-IP network or a 3GPP-defined ALL-IP network, the PS call processing unit 240 transmits, If the mobile communication related identification number included in the received PS call is IMSI, the MCC and the MNC included in the IMSI are extracted, and the extracted MCC If the MCC and the MNC identical to the extracted MCC and MNC are found in the reject list, the type of the PS call received from the third-party network subscriber is determined and the VoIP call is excluded The VoIP call is forwarded to the core network terminal, and the VoIP call is returned to the normal VoIP call and the emergency VoIP call. Refused for standard VoIP call and, by passing only the core network-side VoIP emergency call and to handle the emergency VoIP call.

On the other hand, if the mobile communication related identification number included in the received PS call is the TMSI, the service division serial number included in the TMSI is extracted, and then the rejection number stored in the memory unit 220 as the extracted service division serial number If the serial number exists in the list of rejection, the type of PS call received from the third-party network subscriber terminal is determined and the location registration call, data call, SMS call, etc. excluding VoIP call The VoIP call is divided into a normal VoIP call and an emergency VoIP call. The VoIP call is rejected for the normal VoIP call, and only the emergency VoIP call is transmitted to the core network end. VoIP calls can be handled.

Here, when the VoIP call is divided into a normal VoIP call and an emergency VoIP call, if the incoming telephone number of the received VoIP call is confirmed and the incoming telephone number is identified as an emergency telephone number (for example, 112, 113, 119, If the received VoIP call includes an emergency category number, it is determined that the VoIP call is an emergency call and the emergency VoIP call is delivered to the core network terminal so that the emergency VoIP call can be processed.

In the third party network subscriber rejection system implemented in the access network of the IP network, the CS call processing unit 230 and the CS core network matching unit 270 may be omitted.

FIG. 5 is a diagram illustrating a configuration of a TMSI applied to the present invention. FIG. 5 shows an example of a configuration of a TMSI applied to the present invention. The identification code c is a reset count that increases at LMP restart, and the identification code d is a serial number indicating the IMSI index.

The identification code e is a service sector serial number assigned to mobile communication service providers of the same type serving the same area, and is displayed using the unused area in the TMSI. In the embodiment of the present invention, three bits of the second, thirteenth, and fourteenth bits are used to display a business division serial number. In the first, second, third, and third business networks, Can be assigned.

FIG. 6 is a flowchart illustrating a method for rejecting a third party network subscriber call according to an embodiment of the present invention. In an embodiment of the present invention, a call received by a third party network subscriber rejection system 200 implemented in an access network A case where the mobile communication related identification number included in the IMSI is an IMSI will be described.

First, a third party implemented in an access network (for example, BSC of CDMA network, RNC of WCDMA network, RAS or ACR of Wibro network, BSC of 3GPP2 definition ALL-IP network, RNC of 3GPP definition ALL- The network identification information used to identify the service provider that is serving the same area in the reject list stored in the memory unit 220 of the network subscriber call rejection system 200 but does not establish the roaming agreement is registered, In the embodiment, MCCs and MNCs included in the IMSI allocated to the subscriber terminal of the third party network are registered as the network identification information (S10).

Thereafter, when the third party network subscriber station 100 fails to access the base station due to a failure in the access network including the core network of the third party network or the base station, or the base station temporarily stops the service due to the system check or update, S12), the third-party network subscriber station 100 transmits a PS call or a CS call in synchronization with the frequency channel of a communication service provider servicing the emergency call (112, 113, 119, etc.) ).

Meanwhile, the PS call or the CS call originated by the third-party network subscriber station 100 failing to access the base station through the above-described step S14 is received by the third party network subscriber rejection system 200 implemented in the access network terminal. When receiving the PS call from the third party network subscriber station 100 (S16), the PS subscriber inquiry system 200 transmits the IMSI, which is a mobile communication related identification number included in the received PS call, The MCC and the MNC are extracted (S18). The MCC and the MNC extracted from the IMSI are searched for a list of rejections stored in the memory unit 220 (S20), and it is determined whether the MCC and the MNC extracted from the IMSI are included in the reject list (S22).

If the MCC and the MNC extracted from the IMSI are not included in the reject list as a result of the determination in the step S22, the mobile terminal transmits the received PS call (location registration call, data call, SMS call, etc.) to the core network terminal (S24) .

If the MCC and the MNC extracted from the IMSI are included in the reject list as a result of the determination in the step S22, the mobile terminal immediately rejects the received PS call (location registration call, data call, SMS call, etc.) (S26).

If the network in which the third party network subscriber rejection method according to the present invention is implemented is an IP network when the PS call is rejected in the above step S26, it is checked whether the received PS call is a VoIP call, and if the received PS call is not a VoIP call If the received PS is a VoIP call, the VoIP call is transmitted to the core network. The VoIP call is divided into a normal VoIP call and an emergency VoIP call, and the normal VoIP call is rejected. It is preferable to deliver it to the core network end.

As described above, a method of classifying a VoIP call into a normal VoIP call and an emergency VoIP call includes analyzing an incoming telephone number included in a VoIP call so that the called telephone number matches an emergency telephone number (e.g., 112, 113, 119 Etc.), a method of determining the VoIP call as an emergency VoIP call, a method of determining whether the VoIP call is an emergency VoIP call when the VoIP call is ascertained by ascertaining the emergency category number, .

On the other hand, when receiving the CS call from the third party network subscriber station 100 (S16), the CS call processing unit 230 extracts the MCC and the MNC from the IMSI which is the mobile communication related identification number included in the received CS call S28). The MCC and MNC extracted from the IMSI are searched for a reject list stored in the memory unit 220 (S30), and it is determined whether the MCC and the MNC extracted from the IMSI are included in the reject list (S32).

If it is determined in step S32 that the MCC and the MNC extracted from the IMSI are not included in the reject list, the received CS call is delivered to the core network end (S34).

On the other hand, if it is determined in step S32 that the MCC and the MNC extracted from the IMSI are included in the reject list, the location registration call and the SMS call are immediately rejected from the received CS call. To the core network end (S36).

In step S36, it is preferable that the method for dividing the CS call into a location registration call, an SMS call, or a voice call is based on a service type included in the call request message.

When the voice call is transmitted to the core network end for the emergency call processing in the step S36, the voice call is again divided into the general voice call and the emergency voice call, the general voice call is rejected, .

As described above, a method of dividing a voice call into a general voice call and an emergency voice call includes analyzing an incoming phone number included in a voice call so that the called phone number is an emergency phone number (e.g., 112, 113, 119 Etc.), a method of judging the voice call as an emergency voice call, and a method of judging the voice call as an emergency voice call if the voice call is ascertained by holding the emergency category number and holding the emergency category number .

FIG. 7 is a flowchart illustrating a method for rejecting a third party network subscriber call according to another embodiment of the present invention. In another embodiment of the present invention, a call received by a third party network subscriber rejection system 200 implemented in an access network The mobile communication related identification number included in the TMSI will be described as an example.

First, a third party implemented in an access network (for example, BSC of CDMA network, RNC of WCDMA network, RAS or ACR of Wibro network, BSC of 3GPP2 definition ALL-IP network, RNC of 3GPP definition ALL- The network identification information used for distinguishing the service providers which are providing the same area to the refusal list stored in the memory unit 220 of the network subscriber call rejection system 200 but are not roaming agreements is registered in the refusal list, In another embodiment of the present invention, the service sector serial numbers included in the TMSI allocated to the subscriber terminal of the third party network are registered as the network identification information (S40).

Thereafter, when the third party network subscriber station 100 fails to access the base station due to a failure in the access network including the core network of the third party network or the base station, or the base station temporarily stops the service due to the system check or update, S42), the third-party network subscriber terminal 100 transmits a PS call or a CS call in synchronization with the frequency channel of a communication service provider servicing the emergency call (112, 113, 119, etc.) ).

Meanwhile, the PS call or the CS call originated by the third-party network subscriber station 100 failing to access the base station through the above-described step S44 is received by the third party network subscriber call rejection system 200 implemented in the access network terminal, When receiving the PS call from the third party network subscriber station 100 in step S46, the PS subscriber inquiry system 200 transmits the TMSI, which is a mobile communication related identification number included in the received PS call, The business entity type serial number is extracted (S48), and the business entity type serial number extracted from the TMSI is searched for in the rejection list stored in the memory unit 220 (S50), and the business entity type serial number extracted from the TMSI is included in the rejection list (S52).

If it is determined in step S52 that the service sector serial number extracted from the TMSI is not included in the rejection list, the received PS call is delivered to the core network end (S54).

On the other hand, if it is determined in step S52 that the service sector serial number extracted from the TMSI is included in the reject list, the received PS call is rejected immediately (S56).

If the network in which the third party network subscriber rejection method according to the present invention is implemented is an IP network when the PS call is rejected in step S56, it is checked whether the received PS call is a VoIP call. If the received PS call is not a VoIP call If the received PS is a VoIP call, the VoIP call is transmitted to the core network. The VoIP call is divided into a normal VoIP call and an emergency VoIP call, and the normal VoIP call is rejected. It is preferable to deliver it to the core network end.

On the other hand, if the CS call is received from the third-party network subscriber station 100 (S46), the CS call processing unit 230 extracts the vendor segment serial number from the TMSI, which is the mobile communication related identification number included in the received CS call (S58). A reject list stored in the memory unit 220 is retrieved from the TMSI (S60), and it is determined whether the rejection list extracted from the TMSI is included in the reject list (S62) .

If it is determined in step S62 that the service sector serial number extracted from the TMSI is not included in the reject list, the received CS call is transmitted to the core network end (S64).

On the other hand, if it is determined in step S62 that the service sector serial number extracted from the TMSI is included in the reject list, the location registration call and the SMS call are immediately rejected from the received CS call, To the core network end (S66).

When the voice call is transmitted to the core network end for the emergency call processing in the step S66, the voice call is again divided into the general voice call and the emergency voice call, the general voice call is rejected, .

FIG. 8 is a view for explaining a third party network subscriber call rejection method according to another embodiment of the present invention. In another embodiment of the present invention, a third party network subscriber call rejection system 200 implemented in an access network terminal A case where the mobile communication-related identification number included in one call is IMSI will be described as an example.

First, a third party implemented in an access network (for example, BSC of CDMA network, RNC of WCDMA network, RAS or ACR of Wibro network, BSC of 3GPP2 definition ALL-IP network, RNC of 3GPP definition ALL- The network identification information used for distinguishing a service provider that is operating the same area in the reject list stored in the memory unit 220 of the network subscriber call rejection system 200 but does not make a roaming agreement is registered. In another embodiment, MCCs and MNCs included in the IMSI allocated to the subscriber terminal of the third party network are registered as the network identification information (S70).

If the network identification information (MCC + MNC) used for distinguishing the service providers that are in the same area but are not roaming agreements is registered in the reject list applied to another embodiment of the present invention, (MCC + MNC) is matched with the number of times the call rejected including the corresponding network identification information (MCC + MNC) is matched during the time designated by the operator, and matched to each network identification information (MCC + MNC) The number of rejections is preferably set to zero.

Thereafter, when the third party network subscriber station 100 fails to access the base station due to a failure in the access network including the core network of the third party network or the base station, or the base station temporarily stops the service due to the system check or update, S72), the third-party network subscriber terminal 100 transmits a PS call or a CS call in synchronization with a frequency channel of a communication service provider servicing the emergency call (112, 113, 119, etc.) ).

Meanwhile, the PS call or the CS call originated by the third-party network subscriber station 100 failing to access the base station through the above-described step S74 is received by the third party network subscriber rejection system 200 implemented in the access network terminal. When receiving the PS call from the third party network subscriber station 100 in step S76, the PS 200 transmits the IMSI, which is a mobile communication related identification number included in the received PS call, The MCC and the MNC are extracted (S78), the MCC and the MNC extracted from the IMSI are searched for a list of rejections stored in the memory unit 220 (S80), and it is determined whether the MCC and the MNC extracted from the IMSI are included in the reject list (S82).

If the MCC and the MNC extracted from the IMSI are not included in the reject list as a result of the determination in the step S82, the mobile terminal transmits the received PS call (location registration call, data call, SMS call, etc.) to the core network terminal (S84) .

If the MCC and the MNC extracted from the IMSI are included in the reject list as a result of the determination in step S82, the received PS call (location registration call, data call, SMS call, etc.) is immediately rejected (S86).

If the network in which the third party network subscriber rejection method according to the present invention is implemented is an IP network when the PS call is rejected in step S86, it is checked whether the received PS call is a VoIP call, and if the received PS call is not a VoIP call If the received PS is a VoIP call, the VoIP call is transmitted to the core network. The VoIP call is divided into a normal VoIP call and an emergency VoIP call, and the normal VoIP call is rejected. It is preferable to deliver it to the core network end.

As described above, a method of classifying a VoIP call into a normal VoIP call and an emergency VoIP call includes analyzing an incoming telephone number included in a VoIP call so that the called telephone number matches an emergency telephone number (e.g., 112, 113, 119 Etc.), a method of determining the VoIP call as an emergency VoIP call, a method of determining whether the VoIP call is an emergency VoIP call when the VoIP call is ascertained by ascertaining the emergency category number, .

The PS call processing unit 240, which rejects the PS call through the process S86, increases the number of rejections matched to the MCC and the MNC extracted through the process S78 by 1 (S88) It is determined whether the number of times exceeds the preset threshold number (S90).

If it is determined in step S90 that the number of rejections for the designated time does not exceed the preset threshold number, the reason why the call failure message is rejected to the third-party network subscriber station 100 that originated the call in step S74 It is set to 'network failure' and transmitted (S92).

The third-party network subscriber station 100, which has received the call failure message transmitted by the third-party network subscriber call rejection system 200 through the process S92, confirms the reason for rejection included in the call failure message and retries the call do.

If it is determined in step S90 that the number of rejections for the designated time period exceeds the predetermined threshold number, the third-party network subscriber station 100, which originated the call in step S74, Is set to 'PLMN not allowed' (S94).

The third-party network subscriber station 100, which has received the call failure message transmitted from the third-party network subscriber call rejection system 200 through the process S94, confirms the reason for rejection included in the call failure message, In step S74, the frequency channel used for origination of the call is added to the forbidden PLMN list so that the corresponding frequency channel is not selected in the future network selection (S96).

Accordingly, the third-party network subscriber station 100 can not re-call the call through the frequency channel used for making the call in step S74.

On the other hand, when receiving the CS call from the third party network subscriber station 100 (S76), the CS call processing unit 230 extracts the MCC and the MNC from the IMSI which is the mobile communication related identification number included in the received CS call S98), the MCC and MNC extracted from the IMSI are searched for a reject list stored in the memory unit 220 (S100), and it is determined whether the MCC and the MNC extracted from the IMSI are included in the reject list (S102).

If it is determined in step S102 that the MCC and the MNC extracted from the IMSI are not included in the reject list, the received CS call is delivered to the core network end (S104).

If it is determined in step S102 that the MCC and the MNC extracted from the IMSI are included in the reject list, it is determined whether the received CS call is a voice call for emergency call processing in step S106.

If it is determined in step S106 that the received CS call is a voice call for emergency call processing, the process proceeds to step S104 and the received CS call is delivered to the core network end.

In the step S106, the method for dividing the CS call into either a location registration call, an SMS call or a voice call is preferably performed based on a service type included in the call request message.

Meanwhile, when the voice call is transmitted to the core network end for the emergency call processing in the above-described step S104, the voice call is again divided into the general voice call and the emergency voice call, the general voice call is rejected, It can also be delivered to the network end.

As described above, a method of dividing a voice call into a general voice call and an emergency voice call includes analyzing an incoming phone number included in a voice call so that the called phone number is an emergency phone number (e.g., 112, 113, 119 Etc.), a method of judging the voice call as an emergency voice call, and a method of judging the voice call as an emergency voice call if the voice call is ascertained by holding the emergency category number and holding the emergency category number .

If it is determined in step S106 that the received CS call is a location registration call or an SMS call that is not a voice call, the received CS call is immediately rejected (step S108). Then, the MCC and the MNC The matching rejection count is incremented by one (S110), and it is determined whether the rejection count for the designated time exceeds the preset threshold count (S112).

If it is determined in step S112 that the number of rejections for the designated time does not exceed the preset threshold number, the reason why the call failure message is rejected to the third party network subscriber station 100 that originated the call in step S74 It is set as 'network failure' and transmitted (S114).

The third-party network subscriber station 100, which has received the call failure message transmitted from the third-party network subscriber call rejection system 200 through the process S114, checks the reason for rejection included in the call failure message and retries the call do.

If it is determined in step S112 that the number of rejections for the designated time exceeds the preset number of times, the third party network subscriber terminal 100 that originated the call in step S74 rejects the call failure message Quot; PLMN not allowed " and transmits the set reason (S116).

The third-party network subscriber station 100 having received the call failure message transmitted by the third-party network subscriber call rejection system 200 through the above-described process S116 confirms the reason for rejection included in the call failure message, A frequency channel used for origination of the call is added to the forbidden PLMN list through step S74 so that the corresponding frequency channel is not selected in the future network selection (S118).

Accordingly, the third-party network subscriber station 100 can not re-call the call through the frequency channel used for making the call in step S74.

On the other hand, if a foreign roaming subscriber has a roaming contract only with a domestic first carrier and can not access a base station of the first carrier network without establishing a roaming agreement with another carrier, The third party network subscriber call rejection system installed in the network receiving the overseas roaming subscriber terminal calls the call received from the foreign roaming subscriber terminal as well as the call attempted by the domestic subscriber terminal. And if the MCC and the MNC or the carrier classification serial number included in the received call are registered in the rejection list, the call received from the foreign roaming subscriber terminal is analyzed and transmitted to the emergency call To the core network only, and to the remaining Not handle rejection.

The third party network subscriber rejection system and method of the present invention are not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea of the present invention. For example, in an embodiment of the present invention, when a call including a specific MCC and an MNC registered in a reject list in a non-subscriber network subscriber rejection system implemented in an access network terminal is rejected more than a threshold number of times during a specified time, (PLMN not allowed) 'to the third-party network subscriber station, but the call including the specific MCC and the MNC registered in the refusal list is notified that the call number is more than the threshold number of times A third party subscriber call rejecting system that transmits a call failure message with a reason for rejection to a PLMN (not allowed) PLMN to a third-party network subscriber terminal attempting the call may be implemented in the core network.

When a third party network subscriber call rejection system is implemented in the core network, the third party subscriber call rejection system may be a Mobile Switching Center (MSC) of a CDMA network, an MSC of a WCDMA network, a Serving GPRS Support Node (SGSN) (Gateway GPRS Support Node), an MSC of a 3GPP2-defined ALL-IP network, an SGSN or a GGSN of a 3GPP-defined ALL-IP network, or the like.

The third party network subscriber call rejection system and method according to the present invention can be applied to a case where an outgoing call is inputted from a third party network subscriber terminal that fails to connect to the base station due to a failure occurring in a third party network without roaming contract, The MNC or the MNC or the service serial number, the mobile terminal rejects the call except for the voice / VoIP call for handling the emergency call from the call coming from the third party network subscriber terminal, Data call, SMS call, etc. can be prevented from rising to the core network edge, and it is possible to prevent the overload of the core network edge from occurring due to the outgoing call of the third party network subscriber terminal, .

In addition, the present invention manages MCCs and MNCs allocated to non-roaming networks that do not have roaming agreements, and if a call is rejected more than a threshold number of times during a designated call time from a subscriber terminal of a third party network to which MCCs and MNCs are allocated, It is possible to prevent the third party network subscriber station from retrying the call by transmitting a call failure message in which the reason for rejection is set as 'PLMN not allowed' to the third-party network subscriber terminal which transmitted the rejection call .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram illustrating a configuration of a third party network subscriber call rejection system according to an embodiment of the present invention; FIG.

2 is a diagram showing a structure of an IMSI applied to the present invention;

FIG. 3 is an exemplary illustration of a reject list applied to an embodiment of the present invention. FIG.

Figure 4 is an exemplary illustration of a reject list applied to another embodiment of the present invention;

5 is a diagram illustrating a configuration of a TMSI applied to the present invention.

FIG. 6 is a processing diagram for explaining a method of rejecting a third party network subscriber call according to an embodiment of the present invention; FIG.

FIG. 7 is a processing diagram for explaining a third party network subscriber call rejection method according to another embodiment of the present invention; FIG.

8 is a processing diagram for explaining a method of rejecting a third party network subscriber call according to another embodiment of the present invention.

DESCRIPTION OF THE REFERENCE SYMBOLS

100. Third-party network subscriber terminal, 200. Third-party network subscriber call rejection system.

210. A base station matching unit, 220. A memory unit,

230. CS call processing unit, 240. PS call processing unit,

250. OAM section 260. PS core network matching section,

270. CS core network matching unit

Claims (21)

  1. Implemented at the access network end;
    A memory unit for managing identification information of a third party network serving the same area as the access network unit;
    Analyzing the network identification information included in the received call and the received call to transmit the received call to the core network terminal only when the received call is a voice call, And a call processing unit for rejecting all of the other calls except for the call,
    The memory unit,
    A list of refusal to which identification information of a third party network that is in the same area as the access network but which does not make a roaming agreement is stored,
    The call processing unit,
    If the received call is rejected, the number of rejections stored in the rejection list is incremented by one to match the network identification information included in the received call, and whether the number of rejections during the designated time from the operator exceeds a predetermined threshold number And transmits a call failure message set to 'PLMN not allowed' to the terminal of the third party network subscriber when the number of rejection exceeds the preset threshold number, And transmits a call failure message set to 'Network Failure' to the terminal of the third party network subscriber if the set threshold is not exceeded,
    The call failure message having the rejection reason set to 'PLMN not allowed' is used to prevent the third party network subscriber station from being redirected through the channel used for the call origination. Call rejection system.
  2. 2. The apparatus of claim 1,
    If the received call is a call originated by a third party network subscriber who does not make a roaming agreement as a result of checking that the call is a call originated by a third party network subscriber who does not make a roaming agreement using the network identification information included in the received call, Analyzes the received call and delivers the received call to the core network only when the received call is a voice call, and rejects all calls when the received call is a call other than a voice call. system.
  3. delete
  4. The method according to claim 1,
    (Mobile Country Code) and MNC (Mobile Network Code) included in an International Mobile Station Identity (IMSI) assigned to a subscriber terminal of a third party network that is in the same area as the access network but does not make a roaming agreement A third party network subscriber rejection system characterized by.
  5. The method according to claim 1,
    And a service classification serial number included in a Temporary Mobile Subscriber Identity (TMSI) assigned to a subscriber terminal of a third party network that is in the same area as the access network but does not have a roaming agreement, is registered in the third party network subscriber call rejection system .
  6. delete
  7. The call processing method according to claim 1 or 2,
    Wherein if the received call is a voice call, the received voice call is divided into a normal voice call and an emergency voice call and rejects the received voice call if the voice call is a normal voice call, Call rejection system.
  8. delete
  9. The method of claim 1, wherein the third-
    Adding the channel used for origination of the call to the forbidden PLMN list based on the rejection reason included in the call failure message to prevent the channel from being selected when the network is selected in the future.
  10. 2. The apparatus of claim 1,
    Analyzes the network identification information included in the received call and the received call to transmit the received call to the core network terminal only when the received call is a VoIP call, And if the call is a call other than the VoIP call, rejects the call.
  11. 11. The apparatus according to claim 10,
    And analyzing the received call and transmitting the received call to the core network terminal only when the received call is a VoIP call, and when the received call is a VoIP call excluding the VoIP call, If the call is rejected, the call rejection is rejected.
  12. 3. The apparatus of claim 2,
    (PS) call from the call originated by the third party network subscriber, and analyzing the PS call using the MCC and the MNC included in the IMSI of the PS call. As a result, the PS calls the roaming agreement A PS call processing unit for directly rejecting the PS call if the call is received by a non-third-party network subscriber;
    (CS) call from among the calls originated by the third party network subscriber, and analyzing the CS call using the MCC and the MNC included in the IMSI of the CS call. As a result, And a CS call processing unit for delivering the CS call to a core network terminal only when the CS call is a voice call for an emergency call processing, when a non-party network subscriber confirms the calling call. .
  13. 13. The method as claimed in claim 12, wherein the PS call processing unit rejects the PS call when the PS call is confirmed by a call originated by a third party network subscriber who does not make a roaming agreement, (PLMN (n)) to the terminal of the third party network subscriber if the number of rejections exceeds the preset threshold number, and if the number of rejections exceeds the predetermined threshold number, quot; allowed "),
    If the CS call is not a voice call, the CS call processing unit, after rejecting the CS call, increases the number of rejections matched to the MCC and the MNC by one, and determines whether the rejection count exceeds a predetermined threshold number (PLMN not allowed) 'to the terminal of the third-party network subscriber when the number of rejection exceeds the preset threshold number, Subscriber call rejection system.
  14. 3. The apparatus of claim 2,
    The PS receives a Packet Service (PS) call from the call originated by the third party network subscriber and analyzes the PS call using the service sector serial number included in the TMSI of the PS call. As a result, A PS call processing unit for directly rejecting the PS call when it is confirmed by a call originated by a non-affiliated third party network subscriber;
    The CS call is analyzed based on the service sector serial number included in the TMSI of the CS call, and the CS call roaming agreement is transmitted to the third party network subscriber. And a CS call processing unit for delivering the CS call to the core network terminal only when the CS call is a voice call for an emergency call processing, when the unregistered third party network subscriber identifies the call as an originating call. system.
  15. 15. The method according to claim 12 or claim 14,
    If the CS call is a voice call, the received voice call is classified into a normal voice call and an emergency voice call, and if the CS call is a normal voice call, rejection processing is performed; if the CS call is an emergency voice call, Wherein the third party network subscriber call rejection system comprises:
  16. 16. The apparatus of claim 15,
    If the CS call is a voice call, the call forwarding number is confirmed and the incoming call number is confirmed as an emergency phone number, or if the emergency category number is included, the voice call is determined to be an emergency voice call, And decides the remaining voice call as a general voice call and rejects the voice call.
  17. A registration step of registering identification information of a third party network serving the same area as the access network unit in a memory unit of a third party network subscriber call rejection system implemented in an access network unit;
    Determining whether the received call is a call originated by a third party network subscriber using network identification information included in the received call when the call is received from a third party network subscriber;
    If the received call is a call originated by a third party network subscriber, it is checked whether the received call is a voice call, and if the received call is a voice call, the call is delivered to the core network. If the received call is not a voice call And a call process for rejecting the received call,
    The registration process includes:
    Stores a list of denials in which identification information of a non-roaming network that is in the same area as the access network but which has no roaming agreement,
    The call processing includes:
    Increasing the number of rejections stored in the reject list to 1 by matching the network identification information included in the received call when the received call is rejected;
    Determining whether the number of rejections during a time designated by the user exceeds a preset threshold value;
    Transmitting a call failure message set to 'Network Failure' to the terminal of the third party network subscriber if the rejection number does not exceed the preset threshold value;
    If the number of rejections exceeds a predetermined threshold value, transmitting a call failure message set to 'PLMN not allowed' to the terminal of the third party network subscriber, the reason for rejection being 'PLMN not allowed' And,
    The call failure message having the rejection reason set to 'PLMN not allowed' is used to prevent the third party network subscriber station from being redirected through the channel used for the call origination. A method for rejecting a subscriber call from a third party network in a call rejection system.
  18. 18. The method of claim 17,
    And a step of confirming whether the received call is a call originated by a third party network subscriber who has not entered into the roaming agreement by using the network identification information included in the received call when the call is originated by the third party network subscriber,
    Wherein the call processing is a process for checking whether the received call is a voice call when the received call is identified as a call transmitted from a third party network subscriber who does not make a roaming agreement as a result of the checking process and if the received call is a voice call, The method of claim 1, wherein the third party subscriber call rejection method comprises the steps of: if the call is not a voice call, rejecting the call;
  19. delete
  20. 18. The method of claim 17,
    If the received call is a call originated by a third party network subscriber, confirming whether the received call is a VoIP call;
    If the received call is a VoIP call, delivering the received call to a core network end; and rejecting the received call if the received call is not a VoIP call. How to decline third party network subscriber calls.
  21. 18. The method of claim 17,
    Determining if the received call is a VoIP call if the received call is a call originated by a third party network subscriber who does not make a roaming agreement;
    If the received call is a VoIP call, delivering the received call to a core network end; and rejecting the received call if the received call is not a VoIP call. How to decline third party network subscriber calls.
KR1020080044432A 2008-05-14 2008-05-14 System and method for rejecting call of different mobile communication network subscriber KR101426233B1 (en)

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