KR100438560B1 - Subscribe information update method for gprs system - Google Patents

Abstract

The present invention relates to a method for updating subscriber information of a GPRS system, and to update related information of a subscriber in real time through communication between an HLR and a GGSN. To this end, the present invention provides a mobile communication system comprising: a first process of transmitting subscriber IP information of an HLR to a GGSN to configure subscriber information; A second step of checking whether the IP address information of the HLR is changed; According to the change of the IP address information, the changed subscriber information is transmitted to the GGSN as a third process of changing the subscriber information.

Description

SUBSCRIBE INFORMATION UPDATE METHOD FOR GPRS SYSTEM}

The present invention relates to a method of updating subscriber information of a GPRS system, and more particularly, to a method of updating subscriber information of a GPRS system to automatically update related information of a subscriber through communication between an HLR and a GGSN.

The GPRS packet network structure recommended in 3GPP GPRS TS 23.060 consists of SGSN, GGSN and HLR.

The SGSN manages the location and mobility of the terminal, and the HLR performs a role of informing the GGSN of the SGSN region where the packet terminal is currently located for paging of the terminal, and the GGSN allocates an IP address to the terminal and accesses the Internet or It acts as a gateway to match the intranet.

Here, the GGSN allocates an IP address to the UE in two ways.

First, the static IP address is allocated by the packet data service user to the IP address at the time of subscription. The IP address is an address registered in the HLR.

Second, the method of allocating a dynamic IP address is performed by a GGSN to allocate an idle IP address when a terminal requests a service to receive a packet data service, or an IP address in a DHCP server that is currently being used to assign an IP address in an operator network. Assign an address and return the IP address when the service ends.

Here, in the case of the subscriber using the static IP, the IP packet from any node capable of packet communication using the IP (mobile communication terminal capable of packet communication, general PC connected to the Internet, etc.) is transmitted to the subscriber. In order to do this, the GGSN must have an IP-IMSI address mapping table.

The IP-IMSI address mapping table should have basic information when the GGSN system starts up, and the GGSN operator manually inputs the information into the IP-IMSI address mapping table.

If the static IP information of the subscriber is modified in the HLR, in order to synchronize the subscriber information between the HLR and the GGSN, the operator modifies the IP-IMSI mapping table directly to the GGSN so that the subscriber using the static IP can receive the incoming service. To help.

A packet data incoming service can be provided using the above-described IP-IMSI mapping table. This packet data incoming service will be described with reference to FIG.

First, in order to perform data transmission and reception, when a node transmits packet data to a terminal having a static IP address, the packet data enters a GGSN having information about the static IP address.

The GGSN reads the IMSI value corresponding to the IP address from the IP-IMSI mapping table and transmits it to the HLR.

At this time, the IMSI value is transmitted in a message called Send Routing Info for GPRS.

Subsequently, the HLR sends the SGSN number in which the UE is located to the GGSN by using the IMSI value in a Send Routing Info for GPRS Ack message, and then, the GGSN sends a PDP Notification Request message for notifying that the packet has arrived. To send.

Then, the SGSN transmits a Request PDP Context Activation message to the UE, which causes the UE to perform a PDP Context Activation procedure.

If, in the HLR, the subscriber's static IP address related information is added / modified / deleted, an IMSI-IP mapping table update is performed in the GGSN by an operator's work.

At this time, whenever the static IP address related information is added / modified / deleted in the HLR, the GGSN operator should be notified, and the GGSN operator should update the static IP address of the subscriber to be added / modified / deleted in the mapping table. This is a very cumbersome task. If the information of the HLR and GGSN is inconsistent due to an operator's mistake, the GPRS packet terminating service operation may not work properly.

The present invention has been made to solve the above problems, and an object thereof is to provide a method for updating subscriber information of a GPRS system to update relevant information of a subscriber in real time through communication between an HLR and a GGSN.

1 is a schematic diagram showing the flow of a packet data incoming service using the IP-IMSI mapping table.

2 is a flowchart illustrating a method for updating subscriber information of a GPRS system of the present invention.

FIG. 3 is a schematic diagram showing a method of updating static IP subscriber information between HLR-GGSN at the time of GPRS system activation in FIG.

4 is a schematic diagram illustrating a method of updating static IP subscriber information between HLR-GGSN when adding / changing static IP address information of a subscriber in FIG. 2;

FIG. 5 is a schematic diagram illustrating a method of updating static IP subscriber information between HLR-GGSN upon deletion of subscriber static IP address information of FIG. 2; FIG.

According to an aspect of the present invention, there is provided a mobile communication system, comprising: a first process of transmitting subscriber IP information of an HLR to a GGSN to configure subscriber information; A second step of checking whether the IP address information of the HLR is changed; According to the change of the IP address information, characterized in that the third step of changing the subscriber information by transmitting the changed subscriber information to the GGSN.

The first step may include a first step of transmitting, at a HLR, a subscriber's IMSI number and IP address to a corresponding GGSN using a map message; In the GGSN, an IMSI-IP mapping table is configured by the map message, and then a second step of transmitting an acknowledgment message to the HLR.

The third process may include: a first step of changing a static IP address of a subscriber in the HLR; A second step of transmitting an IMSI number and an IP address of a subscriber having a static IP address changed in the first step to a corresponding GGSN using a map message; In the GGSN, an IMSI-IP mapping table is configured by the map message, and then a third step of transmitting an acknowledgment message to the HLR.

Hereinafter, the operation and effect of the subscriber information update method of the GPRS system according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a schematic diagram showing the operation of the embodiment of the subscriber information updating method of the present invention GPRS system, when the GPRS system is activated, after transmitting the information of the subscriber having a static IP address in the HLR to the GGSN to configure the relevant information, In the GGSN, transmitting a confirmation message to the HLR; A second step of determining whether a change of subscriber information has occurred in the HLR; As a result of the determination of the second process, when a change of subscriber information occurs in the HLR, the changed static IP address is transmitted to the corresponding GGSN of the subscriber, the related information is changed, and the GGSN sends a confirmation message to the HLR. It consists of a third process of transmitting to, and describes the operation of the present invention as described above.

First, when the GPRS system is activated, information on a subscriber having a static IP address is transmitted from the HLR to the GGSN to configure related information, and then, the GGSN transmits a confirmation message (Insert Subscriber Data Ack) to the HLR.

That is, as shown in FIG. 3, the IMLR number and IP address of the subscriber having the static IP address in the HLR are transmitted to the corresponding GGSN using a map message (Insert Subscriber Data), and accordingly, the GGSN is the map message (Insert Subscriber). Data) is configured with the IMSI-IP mapping table, and then a confirmation message (Insert Subscriber Data Ack) is transmitted to the HLR.

Here, the map message (Insert Subscriber Data) is transmitted by pairing one or more IMSI numbers and IP addresses.

At this time, the map (MAP: Mobile Application Part) is a signaling message between the CN (Core Network) nodes (eg: MSC-SGSN, MSC-HLR, SGSN-HLR, GGSN-HLR, ...) in the 3GPP asynchronous standard system It is a standard that was created to convey this, and this map is transmitted using NO.7 transport signaling protocols such as Transaction Capability Application Part (TCAP) / Signaling Connection Control Part (SCCP).

Next, the HLR determines whether the change of the subscriber information has occurred, and when the change of the subscriber information occurs in the HLR, the HLR transmits the changed static IP address to the corresponding GGSN to change the related information, and then in the GGSN The sender sends an confirmation message (Insert Subscriber Data Ack) to the HLR.

If the subscriber information is changed in the HLR, as shown in FIG. 4, if the static IP address of the subscriber is added or changed in the HLR, the IMSI number and IP address of the subscriber having the static IP address added or changed are mapped to the message ( Insert Subscriber Data) to the corresponding GGSN, and then configure the IMSI-IP mapping table by the map message (Insert Subscriber Data) in the GGSN, and then insert an Insert Subscriber Data Ack to the HLR. send.

Here, the map message (Insert Subscriber Data) is transmitted by pairing one or more IMSI numbers and IP addresses.

When the subscriber information is changed in the HLR, if the static IP address of the subscriber is deleted in the HLR, the information of the subscriber having the deleted static IP address is transmitted to the corresponding GGSN to delete the related information, and then the GGSN is deleted. In S2, a confirmation message (Delete Subscriber Data Ack) is transmitted to the HLR.

That is, as shown in FIG. 5, when the subscriber's static IP address is deleted, the HLR transmits the IMSI number and IP address of the subscriber having the deleted static IP address to the corresponding GGSN using a map message (Insert Subscriber Data). Then, the GGSN deletes the relevant information in the IMSI-IP mapping table by the map message (Insert Subscriber Data), and then transmits a confirmation message (Delete Subscriber Data Ack) to the HLR.

Here, the map message (Insert Subscriber Data) is transmitted by pairing one or more IMSI numbers and IP addresses.

In other words, when the static IP address related information is changed in the HLR, the related information of the subscriber is transmitted from the HLR to the GGSN through a map message to update the related information of the subscriber in real time.

The specific embodiments or examples made in the detailed description of the present invention are intended to clarify the technical contents of the present invention to the extent that they should not be construed as limited to these specific embodiments and should not be construed in consultation. Various changes can be made within the scope of.

As described in detail above, the present invention updates the subscriber's related information in real time through a map message between the HLR and the GGSN, thereby preventing the hassle of updating when the static IP address related information is changed in the HLR. This prevents information mismatches related to static IP addresses between HLR and GGSN due to operator error.

Claims (4)

In the mobile communication system, A first process of transmitting subscriber IP information of the HLR to the GGSN to configure subscriber information; A second step of checking whether the IP address information of the HLR is changed; And updating the subscriber information by transmitting the changed subscriber information to the GGSN according to the change of the IP address information. The method of claim 1, wherein the first process comprises: Transmitting, by the HLR, the subscriber's IMSI number and IP address to the corresponding GGSN using a map message; And in the GGSN, constructing an IMSI-IP mapping table using the map message, and then sending a confirmation message to the HLR. The method of claim 1, wherein the third process comprises: Changing the static IP address of the subscriber in the HLR; A second step of transmitting an IMSI number and an IP address of a subscriber having a static IP address changed in the first step to a corresponding GGSN using a map message; And in the GGSN, configuring a IMSI-IP mapping table by the map message, and then transmitting a confirmation message to the HLR. The method of claim 2 or 3, wherein the map message, A method of updating subscriber information of a GPRS system, characterized in that one or more IMSI numbers and IP addresses are transmitted in pairs.