KR100827980B1 - Method and access gateway for registration of mobile node - Google Patents

Abstract

A subscriber registration method for an ENUM(Telephone Number Mapping)/DNS(Domain Name Server) and an access gateway are provided to register subscriber information including subscriber identity number information automatically in the ENUM/DNS through the access gateway if a subscriber terminal device enters a wireless network, in order to use ENUM information scheduled to be applied to future VoIP(Voice over Internet Protocol) or video phone and other additional services in a mobile communication network. A call processor(110) obtains subscriber information from a subscriber terminal device(300) entering a wireless network, and outputs the obtained information. A subscriber information converter(130) generates a DNS update message including the received subscriber information, and outputs the generated DNS update message. An ENUM/DNS interface unit(150) delivers the DNS update message to an ENUM/DNS(200). A memory(140) stores an IP(Internet Protocol) address corresponding to the subscriber terminal device.

Description

Subscriber registration method and access gateway for inum / domain name server {Method and access gateway for registration of mobile node}

FIG. 1 illustrates an example of general use of inum, and shows an example of inum use in a CDMA network.

2 is a structural diagram showing a connection gateway 100 according to an embodiment of the present invention.

3 is a flowchart illustrating a method for automatically registering a subscriber in ENUM / DNS according to the first embodiment of the present invention.

4 is a flowchart illustrating a method for automatically registering a subscriber in ENUM / DNS according to a second embodiment of the present invention.

5 is a flowchart illustrating a method for automatically registering a subscriber in ENUM / DNS according to a third embodiment of the present invention.

The present invention relates to a subscriber registration method and apparatus therefor for tElephone NUmber Mapping / Domain Name Server (ENUM / DNS). In particular, the present invention relates to automatic registration of subscriber information in an Inum / domain name server in a mobile communication network. It relates to a method and to an access gateway for performing the same.

In recent years, as an information society, various identification information about an individual or an organization exists such as an internet address, a telephone number, a fax, an e-mail address, and the like. Due to the existence of such various identification information, a large amount of information is occupied, and the system for integrating it efficiently is called tElephone NUmber Mapping (ENUM). Inum is a next-generation integrated identification system that converts a phone number into an Internet address system for easy use on the Internet.

As the existing network (network network) is switched to the IP data network (IP data network), innumerable attention has recently been paid to the technology for using VoIP or video telephony in IP Multimedia Subsystem (IMS). In other words, in networks where subscriber identification numbers are mainly phone numbers, such as mobile communication networks or telephone networks, the trend of using inums for data reception or Internet phone calls by mapping phone numbers to IP addresses for use on the Internet network. to be. For example, if a subscriber calls the other party's telephone number, 02-2106-4940, the subscriber can actually refer to the IP address or URL stored in the ENUM / Domain Name Server (ENUM / DNS). Internet phone calls are made.

Applications for utilizing this enumeration are based on the assumption that subscriber information (IP, URL, subscriber number, etc.) of the subscriber is pre-stored in ENUM / DNS, but subscriber information is automatically registered in ENUM / DNS. The method is unknown.

In order to solve such a problem, the present invention is to provide a method for automatically registering subscribers in ENUM / DNS and an access gateway for performing the same.

In order to achieve the above object, an access gateway for registering a subscriber to a tElephone NUmber Mapping (ENUM) / domain name server according to a feature of the present invention,

A call processing unit for obtaining and outputting subscriber information from a subscriber station device entering a wireless network; Generate a domain name server update message including the subscriber information received from the call processor, wherein the domain name server update message is a message for registering the subscriber with the inum / domain name server and storing the subscriber information; Outputting subscriber information conversion unit; And an inum / domain name server interface for transferring the domain name server update message to the inum / domain name server.

Method for registering a subscriber to tElephone NUmber Mapping (ENUM) / domain name server according to another aspect of the present invention,

Obtaining subscriber information from a subscriber station device entering the wireless network; And a domain name server update message including the subscriber information, wherein the domain name server update message is a message for registering the subscriber with the inum / domain name server and storing the subscriber information. Delivering to the name server.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

In addition, when a part is said to "include" a certain component, this means that it may further include other components, except to exclude other components unless otherwise stated.

Now, a method and a system for automatically registering a subscriber in ENUM / DNS according to an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 illustrates an example of using an inum, and shows an example of inum use in a code division multiple access (CDMA) network. Hereinafter, as illustrated in FIG. 1, since the VoIP gateway 10, the ENUM / DNS 20, the calling terminal device 30, and the called terminal device 40 are general matters, detailed descriptions thereof will be omitted.

 As shown in FIG. 1, when the calling terminal device 30 makes a call using the telephone number of the called terminal device 40, the VoIP gateway 10 receiving the call through the CDMA network receives the call from the ENUM / DNS 20. The VoIP corresponding to the called terminal device 40 is obtained, and the Internet telephone is connected using the VoIP.

In this case, the ENUM / DNS 20 manages subscriber information stored in the innumerable identification scheme as shown in Table 1 below, and transmits subscriber information corresponding to the VoIP gateway 10 request to the VoIP gateway 10.

Table 1

As described above, ENUM utilizing applications are performed by using subscriber information registered in the ENUM / DNS 20. Hereinafter, a method for automatically registering subscriber information in the ENUM / DNS 20 and an apparatus for performing the same It demonstrates. On the other hand, applications that utilize Inum may include an e-mail program, a web URL connection application, a multimedia message service application, and a session initiation protocol (SIP) application.

In the following description, a device that acquires subscriber information such as a telephone number, URL, and fax number from the terminal device and automatically registers the subscriber information in the ENUM / DNS 20 is referred to as an "access gateway", which is referred to as a CDMA network. In PDSN (Packet Data Serving Node), Wideband CDMA (WCDMA) or High Speed Downlink Packet Access (HSDPA) network, Gateway GPRS Support Node (GGSN), Wideband broadband, Wibro network In an access control router (ACR) and a mobile IP network, a home agent (HA) may be used.

2 is a structural diagram showing a connection gateway 100 according to an embodiment of the present invention.

As shown in FIG. 2, the access gateway 100 includes a call processing unit 110, a subscriber management unit 120, a subscriber information conversion unit 130, and an ENUM / DNS interface unit 150, and a memory 140. It may further include a.

When the subscriber station apparatus 300 accesses the wireless network, the call processor 110 transmits it to the subscriber management unit 120. In addition, the call processing unit 110 obtains and outputs subscriber information including one or more of number information, an email address, a personal phone page (URL form), and a fax number from the subscriber terminal device 300. Here, the subscriber station apparatus 300 may be a general-purpose portable terminal such as a CDMA terminal, a WCDMA terminal, a WiBro terminal, or a Wi-Fi terminal, but is not limited to a mobile terminal.

When the subscriber management unit 120 is notified of the wireless network access of the subscriber station device 300 from the call processor 110, the subscriber manager 120 manages call processing of the corresponding terminal device in response to the subscriber information of the subscriber station device 300. Transfer to the information conversion unit 130. In this case, the delivered subscriber information may include identification number information, an email address, a personal phone page (URL form), a fax number, and the like as described above. In addition, the identification number information means any one of the International Mobile Station Identity (IMSI), the telephone number of the terminal device and the number of the terminal device corresponding thereto.

The subscriber information converting unit 130 receives the subscriber information from the subscriber management unit 120 and uses the subscriber information such as identification number information, IP address, URL, email address information, and fax number of the subscriber terminal device 300 using the subscriber information. Including one or more information to generate a DNS update message for registration in the ENUM / DNS (200). In this case, the DNS update message used is a domain name server dynamic update message, which is used to update subscriber information stored in the ENUM / DNS 200.

In addition, the subscriber information converting unit 130 reads the IP address corresponding to the subscriber information of the subscriber station apparatus 300 from the memory 140 to generate an IP address corresponding to the subscriber station apparatus 300, and ENUM / DNS Include in DNS update messages for registration.

The ENUM / DNS interface unit 150 transmits the DNS update message generated by the subscriber information conversion unit 130 to the ENUM / DNS 200.

Thereafter, the ENUM / DNS 200 receiving the registration registers the subscriber using the subscriber identification number information and stores the subscriber information in response to the received message. In addition, if there is a request for an application service utilizing Inum from the subscriber terminal device 300, this is used.

Now, a method of automatically registering a subscriber in the ENUM / DNS 200 according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 3 is a flowchart illustrating a method for automatically registering a subscriber in the ENUM / DNS 200 according to the first embodiment of the present invention. In particular, FIG. 3 is a flowchart illustrating a method for registering a subscriber in response to a subscriber terminal device 300 connected through a CDMA network. It is shown how.

Here, the packet control function (PCF) manages the buffering function and the state of the subscriber station apparatus 300 until the packet transmitted from the PDSN is transmitted wirelessly, and the base station controller (BSC) is the base station and the subscriber station It is located between the base station management and control device.

Referring to FIG. 3, when the subscriber station 300 enters the wireless network, the base station controller secures a wireless channel between the subscriber station 300 and the base station through a wireless network access procedure with the subscriber station 300. S100).

When the radio channel is secured, the PDSN performs a radio packet (RP) connection process through interworking with the PCF (S110), obtains subscriber information from the subscriber station device 300, and correspondingly obtains an IP address to the subscriber station device. Assign.

Subsequently, the PDSN processes a network access server (NAS) function for establishing a point-to-point protocol (PPP) session with the subscriber station (S120).

The above-described call processing process is a well-known technique, and a detailed description thereof will be omitted since a person skilled in the art can carry out without detailed description.

As described above, when the call processing is completed, the PDSN generates a DNS update message (DNS Dynamic Update message) by using the subscriber information including the subscriber identification number information IMSI and the IP address assigned to the subscriber terminal device. Transfer to DNS 200 (S130). In this case, as shown in FIG. 3, the transmitted DNS update message includes IMSI, which is subscriber identification number information, which is a key for distinguishing subscriber station devices in a mobile communication network, and important information of a node in an internet network. Configured to include the IP address assigned to the subscriber station.

The ENUM / DNS 200 acquires the IMSI and IP address of the corresponding subscriber station device 300 from the received DNS Dynamic Update message, registers the subscriber, stores the subscriber information, and transmits the DNS response message to the PDSN (S140). ). Subsequently, when a request for an IP address of the corresponding subscriber station device 300 is performed in order to perform an incoming service related to IMS, the ENUM / DNS 200 reads and delivers the acquired IP address as described above.

On the other hand, when the subscriber information includes the IMSI, a method of allocating an IP address to the subscriber station device and registering it in the ENUM / DNS 200 is described as an example. However, this is not a limitation of the present invention. If the subscriber information is transmitted including the URL, e-mail address, or fax number of the corresponding subscriber terminal device, the subscriber information is stored in the ENUM / DNS 200 by transmitting it in the DNS Dynamic Update message instead of the IP address. This is possible. At this time, the DNS Dynamic Update message includes not only the above-described URL, e-mail address or fax number, but also unique identification number information (IMSI, telephone number or corresponding subscriber terminal device number) of the subscriber station device, and ENUM / DNS ( Based on this, the subscriber identifies the subscriber and registers the subscriber.

In the above-described method, the PDSN registers the subscriber to the ENUM / DNS 200 without any input by using the subscriber identification number information and the IP address obtained after the subscriber station apparatus 300 enters the wireless network, and registers the subscriber information. It is possible to store.

FIG. 4 is a flowchart illustrating a method for automatically registering a subscriber in the ENUM / DNS 200 according to the second embodiment of the present invention. In particular, FIG. 4 illustrates a method of registering subscriber information of a subscriber station device connected through a Mobile IP network. It is shown.

The call processing process (S200, S210, S220) in the Mobile IP network is similar to the call processing process (S100, S110, S120) in the above-described CDMA network, the description of similar parts will be omitted below.

Unlike the CDMA network, the mobile IP network is the home agent (HA) that assigns the IP address. Therefore, a separate IP address allocation process is performed after the call processing process. In this case, the IP address assigned to the subscriber station device becomes a home address.

After performing the call processing process, the subscriber station device 300 transmits a Mobile IP Registration message including subscriber information to the HA (S230) and requests an IP address assignment, and the received HA receives the corresponding subscriber station device 300. Assigns an IP address to the mobile IP response message (S240).

Thereafter, the HA transmits a DNS Dynamic Update message to the ENUM / DNS 200 by using the home address assigned to the subscriber station device 300 and the subscriber identification number information included in the subscriber information, thereby transmitting the subscriber to the ENUM / DNS 200. Register automatically (S250).

FIG. 5 is a flowchart illustrating a method for automatically registering a subscriber in the ENUM / DNS 200 according to the third embodiment of the present invention. In particular, FIG. 5 illustrates registration of subscriber information of a subscriber station apparatus 300 connected through a WCDMA network. The method is shown.

Here, RAN (Radio Access Network) is composed of a base station and a base station controller (Radio Network Controller, RNC), the packet switching device (Serving GPRS Support Node, SGSN) is responsible for data packet delivery with the subscriber station in the WCDMA network It means a node.

In the WCDMA network, as in the above-described first and second embodiments, when the subscriber station apparatus 300 enters the wireless network, the wireless channel is secured between the subscriber station apparatus 300 and the base station by performing a wireless network access procedure (S300). do.

Thereafter, the SGSN establishes a packet data protocol context (PDP context) according to entry of the wireless network of the subscriber station apparatus 300 in cooperation with the GGSN (S310). In this process, the GGSN acquires subscriber information of the subscriber station device 300 and performs a predetermined internal processing such as IP address assignment, and then interoperates with the subscriber station device 300 to PPP or Dynamic Host Configuration Protocol (DHCP). Set (S320).

In addition, the GGSN transmits an Update PDP context Request message according to the radio channel assignment to the SGSN (S330), and accordingly, the SGSN delivers a Modify PDP context Request message to the subscriber station (S340). Thereafter, when the subscriber station device transmits a Modify PDP context Response message (S350), the SGSN receives the update PDP context response message to the GGSN (S360). Since a series of PDP context setting and updating processes are well known technologies, detailed descriptions thereof will be omitted.

Meanwhile, the GGSN that acquires subscriber information and assigns an IP address to the subscriber station 300 during the PDP context setup process includes subscriber identification number information included in the subscriber information and the IP address assigned to the subscriber station 300. The DNS update message is transmitted to the ENUM / DNS 200 (S370). Afterwards, the ENUM / DNS 200 receives the registration and manages the subscriber automatically.

As described above, in the first, second and third embodiments of the present invention, when the subscriber station 300 enters the mobile communication network, subscriber information is obtained from the subscriber station 300 and allocated to the subscriber station. Subscriber information is included in the DNS update message along with the IP address and transferred to the ENUM / DNS 200 for automatic registration.

Meanwhile, in the above-described embodiment of the present invention, the CDMA, WCDMA, and Mobile IP networks have been described by way of example. However, the present invention is not intended to limit the present invention, but rather to describe the embodiments of the present invention. Can also be applied to mobile IP networks such as Wibro or Wimax. When the above-described automatic registration of subscriber information is applied to WiBro or WiMAX, a subject performing automatic registration of subscriber information becomes an access control router (ACR) or an access service network (ASN). In addition, the subscriber information may include an email address, a personal phone page (URL form), a fax number, etc., in addition to the subscriber identification number information. In such a case, the DNS update message may include an email address, a personal phone page (URL form), a fax number. One or more of them may be included and registered in the ENUM / DNS 200.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

According to the above-described configuration, the present invention provides subscriber identification number information through an access gateway when a subscriber station enters a wireless network in order to take advantage of this information to be applied to VoIP, video telephony, and other additional services of IMS in the mobile communication network. Automatically register subscriber information including ENUM / DNS.

The present invention can be expected to be applicable to a wide range of applications using the registrar or other Location server of SIP as well as in the future.

Claims (8)

In the connection gateway which registers a subscriber to tElephone NUmber Mapping (ENUM) / domain name server, A call processing unit for obtaining and outputting subscriber information from a subscriber station device entering a wireless network; Generate a domain name server update message including the subscriber information received from the call processor, wherein the domain name server update message is a message for registering the subscriber with the inum / domain name server and storing the subscriber information; Outputting subscriber information conversion unit; And Inum / domain name server interface unit for transmitting the domain name server update message to the inum / domain name server Connection gateway comprising a. The method of claim 1, A memory for storing an IP address corresponding to the subscriber station More, The domain name server update message includes the IP address information read from the memory by the subscriber information conversion unit corresponding to the subscriber information. The method according to claim 1 or 2, And wherein each of the subscriber information and the domain name server update message includes at least one of subscriber identification number information, UE, fax number, and email address information. The method of claim 3, wherein And the subscriber identification number information includes any one of an international mobile station identification number, a telephone number corresponding to the subscriber station device, and a number of the corresponding subscriber station device. The method of claim 3, wherein The domain name server update message uses a domain name server dynamic update message. In the method of registering a subscriber to tElephone NUmber Mapping (ENUM) / domain name server, Obtaining subscriber information from a subscriber station device entering the wireless network; And Generate a domain name server update message including the subscriber information, wherein the domain name server update message is a message for registering the subscriber with the inum / domain name server and storing the subscriber information; Passing to Subscriber registration method comprising a. The method of claim 6, Between acquiring the subscriber information and delivering the domain name server update message to the inum / domain name server, Allocating an IP address in response to the subscriber information More, And wherein the domain name server update message includes the IP address. The method according to claim 6 or 7, And wherein each of the subscriber information and the domain name server update message includes at least one of subscriber identification number information, UAL, fax number, and email address information.

Images