KR100383552B1 - A method for terminating call of a subscribed mobile having a plurality of ID in next generations mobile telecommunication network - Google Patents

Abstract

The present invention provides an IMT-2000 communication network as a next-generation communication network capable of both packet and circuit communication, and supports subscribers of all-IP services to be introduced in the future for various reasons, for example, IP multimedia subsystem (IMS). When roaming to a non-circuit circuit (CS) due to roaming, the packet-based incoming call to the subscriber is securely completed through the circuit when the network is registered and received only in the circuit. The present invention relates to an incoming method of a next-generation mobile telecommunication network subscriber terminal having two incoming recognizers, and, when there is an incoming call request from an arbitrary terminal to the corresponding subscriber station, determining the type of incoming recognizer of the requested call and determining the received call recognition. Search whether the self is registered, and if the search result is not registered, After the roaming information is searched, if the roaming information is found, the roaming network-based incoming caller is changed to a roaming network-based incoming caller based on the roaming information to process the requested incoming call. It features.

Description

A method for terminating call of a subscribed mobile having a multiple of ID in next generations mobile telecommunication network}

The present invention relates to a method for receiving a next-generation mobile communication network subscriber terminal having a plurality of caller IDs, and more particularly, in an IMT-2000 communication network as a next-generation communication network capable of both packet and circuit communication, Subscribers to all-IP services register only for the circuit network, which is a sub-network, for various reasons, for example, when roaming to a circuit switched network that does not support IP Multimedia Subsystem. The present invention relates to a method for receiving a next-generation mobile communication network subscriber station having a plurality of call receivers for ensuring that a packet-based call to a subscriber is completed safely through a circuit.

In the future, when an IP Multimedia Subsystem (IMS), which is an All-IP domain, is introduced in an IMT-2000 network as a next-generation mobile communication system, subscribers who want to receive this All-IP service appear. Uniform Resource Location (URL) address based on Session Initiation Protocol (SIP), which allows incoming calls within All-IP domain, in addition to E.164 series MSISDN. Will be.

Therefore, if the All-IP subscriber is registered in both the domain of the circuit network and the All-IP domain, incoming by both MSISDN and SIP URL address is possible.

However, if the roaming network does not support the All-IP domain and only supports the domain of the circuit network, then the subscriber should register only to the domain of the circuit network and receive the service. If the caller who wants to make a call sends a call using the SIP URL as usual, the circuit roamed by this subscriber does not recognize the SIP URL destination address, so the call cannot be established and the call cannot be made. .

The present invention has been made to solve the above problems, and an object thereof is to provide a call processing method for a next generation mobile communication system. If only a domain is registered and is receiving a service, it is intended to provide a method for receiving a next-generation mobile communication network subscriber station having a plurality of caller IDs to ensure that a packet-based incoming call to the subscriber is safely completed through the circuit.

1 is a block diagram illustrating the main parts of a next generation mobile communication system to which an incoming method according to the present invention is applied, that is, a home network.

2 is a flowchart illustrating an incoming method of a next-generation mobile communication network subscriber station having a plurality of incoming call IDs according to an exemplary embodiment of the present invention.

※ Explanation of code for main part of drawing

10: request call state control unit 20: home subscriber server

30: branch gateway control unit 40: media gateway control unit

50: gateway exchange

In order to achieve the above object, an example of a method of receiving a next-generation mobile network subscriber station having a plurality of call receivers according to the present invention is a circuit-based called number and a packet-based incoming call among subscribers of a next-generation communication network capable of both packet and circuit communication. In a state where a subscriber terminal capable of using a plurality of recipient identifiers, such as an address, is registered and serviced only in a specific network based domain, a call processing method when another network based incoming call is generated to a corresponding subscriber terminal, from any terminal. A first step of determining a type of incoming recognizer of the request when there is an incoming call request to the corresponding subscriber station; A second step of searching for whether the determined called party recognizer is registered; A third step of searching for a registration of another kind of called recognizer associated with the called recognizer if it is not registered; And a fourth step of changing the first incoming recognizer of the requested call to the registered different registered call recognizer when the other type of incoming recognizer is found to perform processing of the requested incoming call.

The call recognizer includes a circuit network-based call recognizer and a packet network-based call recognizer, wherein the first call recognizer of the request call is a packet network-based call recognizer, and the other registered call recognizers are circuit network-based call recognizers. In particular, the circuit network-based call recognizer is MSISDN, and the packet network-based call recognizer is a SIP URL address.

In order to achieve the above object, another example of an incoming method of a next-generation mobile communication subscriber station with a plurality of call receivers according to the present invention is a circuit-based called number and packet-based subscribers of a next-generation communication network capable of both packet and circuit communication. A method of processing a call when another network-based incoming call is generated to a subscriber terminal in a state in which a subscriber station capable of using multiple caller IDs, such as a destination address, roams to a specific network-based network and is registered and serviced only in the domain of the network. A first step of determining, if there is an incoming call request from any terminal to the corresponding subscriber station, determining the type of incoming recognizer of the request call; A second step of searching for whether the determined called party recognizer is registered; A third step of searching for roaming information for the called party recognizer if it is not registered; And when the roaming information is found, changing the first incoming recognizer of the requested call to a corresponding roaming network based incoming recognizer based on the roaming information, and performing the processing of the requested incoming call.

The initial call recognizer of the request call is a packet-based call recognizer, the roamed network-based call recognizer is a circuit network-based call recognizer, the packet network-based call recognizer is a SIP URL address, and the circuit network-based call recognizer is an MSISDN. It is characterized by that.

According to the present invention, the IMT-2000 All-IP subscriber is configured as described above so that when the incoming call request using the SIP URL called number of the subscriber is registered only in the circuit network, it can be finally routed to establish a call. The invention is about a method and a summary of the features of the mechanism is as follows.

In the present invention, the subscriber can receive both the circuit network service and all-IP service of the packet network, and the serving network (called a visitor or roaming network) is connected to the PS / IMS domain (which is an All-IP service). As a supporting domain, it supports both the domain of the packet network) and the circuit network, but the subscriber is registered only in the domain of the circuit network for any reason, or the subscriber cannot support the packet network domain because the serving network does not support the packet network domain. The default condition is that it is registered only in the circuit network domain.

Under these prerequisites, registration information is transferred to the home subscriber server (HSS) when registering the subscriber's circuit domain. At this time, the home subscriber server is registered by the subscriber location information management function. You know that you can only reach this circuit domain. In addition, in the case of roaming, the network currently roaming by the subscriber according to the information collected when the roaming contract is concluded is automatically recognized as a network that does not support IMS, which is an All-IP domain.

At this time, if a call for an incoming call using the SIP URL called number is attempted to this All-IP subscriber, the functional element of the request call state control unit (I-CSCF) connects to the home subscriber server to determine the location of the subscriber as in the case of any mobile incoming call. When inquiring, the home subscriber server automatically responds to the I-CSCF by translating the number to the MSISDN number of the subscriber in the form of a TEL URL even if a SIP URL incoming request is received based on the current subscriber's registration information. This mapping mechanism refers to the identification number table in the subscriber database (DB) managed by the HSS to convert the SIP URL into MSISDN. Upon receiving this response message, I-CSCF changes the called number in the SIP message from the existing SIP URL number to the newly assigned TEL URL number so that it can be routed later. This allows the subscriber to receive an incoming call even when roaming to the circuit domain because the HSS has translated the number to the TEL URL in the middle, although the incoming request initially came to the SIP URL.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method of terminating a next generation mobile communication network subscription terminal having a plurality of destination recognizers according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram of a main part of a next generation mobile communication system, that is, a home network, to which an incoming method according to the present invention is applied.

1, an interrogating call state control function for controlling registration, session flow, etc. of the contents of a request call when a call is requested from an arbitrary terminal as an access point when an incoming call to a subscriber terminal occurs; I-CSCF) 10; A home subscriber server (HSS) 20 for providing the subscriber information according to the request of the I-CSCF 10 with the subscriber information; A branch gateway control function (hereinafter referred to as BGCF) 30 which determines a transmission path of the request call according to the type of the request call transmitted from the I-CSCF 10; Request control branched from the BGCF 30 is transmitted to the external public wired network (PSTN) for transmission control and reverse processing, call exchange for the request, and / or gateway to other types of communication networks. A media gateway control function (MGCF) 40 for controlling transmission to a gateway MSC 50 performing a function; And are provided.

FIG. 2 is a flowchart illustrating a method for receiving a next-generation mobile communication subscriber station with a plurality of call receivers according to a preferred embodiment of the present invention. Among the subscribers of the home network of FIG. 1 as a next-generation communication network capable of both packet and circuit communication, FIG. Subscriber terminal that can use MSISDN as base called number and SIP ULR address as packet based called address as its called recipient is roamed into circuit network (for example, PSTN) and registered and serviced only in domain of the network. A flowchart illustrating a call processing method when a packet network (eg, All-IP of IMT-2000) based incoming call (ie, incoming call to SIP ULR address) to a terminal is generated.

First, if there is an incoming call request by a SIP URL address, which is one of the called IDs of the subscriber station from any terminal, the request call message is transmitted to the I-CSCF 10 (S201).

The I-CSCF 10 recognizes that the reached request call message is an incoming call to a SIP URL address, and requests the HSS 20 for location registration information on the SIP URL address (S202).

The HSS 20 searches for the location registration information of the corresponding SIP URL address according to the request, and if the corresponding SIP URL is not registered as a result of the search, the HSS 20 recognizes another type of caller associated with the SIP URL or the SIP URL. In the present embodiment, it is determined whether roaming information is recorded. In this embodiment, the subscriber station roams to the circuit network and is registered with its MSISDN only in the domain of the network and is in service. The roaming information (ie, the BGCF ( Roaming network information and MSISDN information including the address of 30) is recorded in association with the corresponding SIP URL according to the information collected when the roaming contract is concluded, the HSS 20 after searching for the roaming information, The retrieved roaming information is provided to the I-CSCF 10 (S203).

The I-CSCF 10 changes the SIP URL address of the request call to the corresponding MSISDN based on the provided roaming information, and transmits the incoming caller changed request call message to the BGCF 30 (S204).

The BGCF 30 confirms that the request call message received from the I-CSCF 10 is an incoming call to a subscriber station registered with MSISDN, and determines a transmission path based on the confirmation. The request call message is transmitted to the corresponding MGCF 40 (S205).

The MGCF 40 determines a subset of the media flow as intended in the request call message received from the BGCF 30, and sends a Session Description Protocol (SDP) message accordingly. The sender terminal transmits and responds to the caller terminal through the I-CSCF 10 (S206 and S207).

When the final SDP message is transmitted from the sender terminal to the I-CSCF 10 (S208), the I-CSCF 10 transmits the final SDP message to the MGCF 40 (S209). The MGCF 40 allocates resources based on the final SDP message (S210), and then sends an IP-based initial address message (IP-IAM) to the corresponding domain of the circuit network as a message for signaling (S211). ).

Subsequently, when the MGCF 40 receives an IP-based address complete message (IP-ACM) from the domain of the circuit network (S212), the MGCF 40 informs that the SIP-based temporary message (ie, waiting for incoming call) is based on this. Ring signal) is transmitted to the caller terminal through the I-CSCF 10 to inform the caller terminal that the subscriber receiver terminal is waiting for an incoming call (S213 and S214).

Subsequently, when the MGCF 40 receives an IP-based answer message (IP-ANM) indicating that the call has been received from the domain of the circuit network (S215), the MGCF 40 based on the MGCF 40 receives an incoming call from the caller. The bidirectional media flow is started (S216).

Subsequently, the MGCF 40 transmits a SIP-based final response message indicating the start of a bidirectional media flow to the caller terminal through the I-CSCF 10 (S217, S218), and correspondingly, from the caller terminal. By receiving the transmitted acknowledgment (ACK) message through the I-CSCF 10, the reception of the request call is completed (S219, S220).

Meanwhile, as another embodiment of the present invention, as a next-generation communication network capable of both packet and circuit communication, among the subscribers of the home network of FIG. 1, an MSISN address as a circuit-based destination number and a SIP URL address as a packet-based destination address can use their own destination identifier. When a subscriber station is registered and is serviced only in a domain of a circuit network for any reason, call processing when a packet network-based incoming call (ie, a call to a SIP ULR address) occurs to the subscriber station will be described. Same as

First, if there is an incoming call request from any terminal by the SIP URL address which is one of the caller IDs of the subscriber station, the request call message is transmitted to the I-CSCF 10, and the I-CSCF 10 Recognizes that the reached request call message is an incoming call to a SIP URL address, and requests the HSS 20 for location registration information on the SIP URL address. To the same as in S203.

The HSS 20 searches for location registration information of the corresponding SIP URL address in response to a request from the I-CSCF 10, and if the corresponding SIP URL is not registered as a result of the search, another type of call associated with the SIP URL is received. In the present embodiment, the subscriber station is registered with only its domain of the circuit network as its MSISDN and is in service, and the corresponding MSISDN is associated with the SIP URL to the HSS 20. Since it is registered, the HSS 20 searches for the MSISDN and provides the searched information to the I-CSCF 10. This process is different from the step S203 of FIG. Since the process of is the same as the process of steps S204 to S220 of FIG. 2, description thereof will be omitted.

As described in detail above, according to the incoming method of the next-generation mobile communication network subscriber station having a plurality of call forwarders according to the present invention, subscribers who can register in both the domain of the circuit network and the All-IP domain are registered only in the domain of the circuit network for various reasons. And receiving the service, the packet-based incoming call to the subscriber is securely completed through the circuit network, so that when the terminal having a plurality of incoming recognizers is registered as only one recognizer, the incoming call to another incoming recognizer is received. Even if a call occurs, the effect of providing a service without interruption by creating a call for the incoming call is created completely.

Claims (7)

Among the subscribers of the next-generation communication network capable of both packet and circuit communication, subscriber terminals that can use a plurality of recipient identifiers, such as circuit-based destination numbers and packet-based destination addresses, roam to a specific network-based network and are registered and serviced only in the domain of the network. In the presence of the call processing method when another network-based incoming call to the subscriber station, A first step of determining an incoming recognizer type of the request call when there is an incoming call request from any terminal to the corresponding subscriber station; A second step of searching for whether the determined called party recognizer is registered; A third step of searching for roaming information for the called party recognizer if it is not registered; And And if the roaming information is found, changing the first incoming recognizer of the requested call to a corresponding roaming network-based incoming recognizer based on the roaming information, and performing the processing of the requested incoming call. An incoming method of a next-generation mobile communication network subscriber terminal having a plurality of destination identifiers. The method of claim 1, The first incoming recognizer of the request call is a packet-based incoming recognizer, and the roamed network-based incoming recognizer is a circuit network-based incoming recognizer. The method of claim 2, The packet network-based destination recognizer is a SIP URL address, and the circuit network-based destination recognizer is MSISDN. In a state where a subscriber terminal capable of using a plurality of call receivers, such as a circuit network-based call receiver and a packet network-based call receiver, among subscribers of a next-generation communication network capable of both packet and circuit communication is registered and serviced only in a specific network-based domain, In the call processing method when another network-based incoming call to the subscriber station occurs, A first step of determining an incoming recognizer type of the request call when there is an incoming call request from any terminal to the corresponding subscriber station; A second step of searching for whether the determined called party recognizer is registered; A third step of searching for a registration of another kind of called recognizer associated with the called recognizer if it is not registered; And And a fourth step of, if the other kind of incoming recognizer is found, changing the first incoming recognizer of the requested call to the registered different registered call recognizer to perform the processing of the requested incoming call. An incoming method of a next-generation mobile network subscriber station with a called party identifier. The method of claim 4, wherein And the type of the call recognizer is divided into a circuit network-based call recognizer and a packet network-based call recognizer. The method of claim 4, wherein The first incoming call recognizer of the request call is a packet network-based call recognizer, and the other registered call recognizers are circuit network-based call recognizers. The method according to any one of claims 4 to 6, And the circuit network-based call recognizer is MSISDN, and the packet network-based call recognizer is a SIP URL address.