WO2006021146A1

WO2006021146A1 - A method of obtaining and handling mobile network code

Info

Publication number: WO2006021146A1
Application number: PCT/CN2005/001316
Authority: WO
Inventors: Hao Yuan
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2004-08-23
Filing date: 2005-08-23
Publication date: 2006-03-02
Also published as: CN1741673A; CN100438684C

Abstract

A method of obtaining and handling mobile network code in IMSI-related process within GGSN to correctly obtain and handle MNC in the case of different MCC corresponding to different length of MNC includes: adding configuration command of different MCC corresponding to different digit of MNC in system, and building the database of MCC corresponding to different digit of MNC , when handling IMSI and structure related to MCC/MNC, obtaining correct length of MNC by inquiring the database , consequently correctly handling corresponding services.

Description

Method for acquiring and processing mobile network code

The present invention relates to a process related to an international mobile station identification number in a general packet radio service gateway support node, and more particularly to a process in which different mobile country codes in an international mobile station identification number correspond to mobile network codes of different lengths.

Background technique

With the rapid development of mobile communication services, the application of mobile data and multimedia communication will become more and more extensive, and in the near future, even more traditional voices will become the main business of mobile communication bearers. The traditional second-generation Global System for Mobile Communication (GSM) has been unable to adapt to this new trend. To this end, GSM will gradually transition to the third-generation mobile communication system. Among them, the 3rd Generation Partnership Project ("3GPP") standard wideband code division multiple access (Wideband Code Division Multiple Access, "WCDMA") / Universal Mobile Telecommunications System (Universal Mobile Telecommunications System) , referred to as "UMTS" for short, with its continuous improvement and mature technical standards, flexible network architecture, smooth evolution mode and many other advantages, and gradually developed into the third generation of mobile communication technology, and for more and more mobile Accepted by communication carriers and equipment providers.

The WCDMA/UMTS system includes a radio access network (Radio Access Network, referred to as "RAN") and a core network (Core Network, "CN"). As shown in Figure 1, UTRAN, CN and User Equipment ("UE") form the entire UMTS system.

In FIG. 1, the UE is composed of a mobile device (ME) such as a mobile phone and a Universal Subscriber Identification Module ("USIM"), which are connected by a Cu electrical interface. UTRAN provides a link between WCDMA terminal equipment and CN, and is responsible for the management and deployment of radio resources. UTRAN mainly includes two types of nodes: a base station (NodeB) and a radio network controller (Radio Network Controller, referred to as "RNC"). Node B is responsible for the transmission and reception of wireless signals and the underlying processing, such as modulation and demodulation, codec, etc. The Uu interface is connected to the UE. The RNC connects the UTRAN and CN through the Iu interface and is responsible for the management of over-the-air radio resources, such as transmitting cell broadcasts, allocating radio channels, configuring cell parameters, managing radio access bearers between mobile phones and systems, and the like.

The CN is logically divided into a Circuit Switched Domain ("CS") and a Packet Switched Domain ("PS").

The CS domain includes a Mobile Switching Center ("MSC") / a Visitor Location Register (VLR) and a Gateway MSC (GMSC), which is completed by the MSC/VLR. The CS domain controls, manages, authenticates, and encrypts functions. The GSMC is the MSC's network management and is responsible for connecting to other fixed or mobile networks.

The PS domain includes a Serving GPRS Support Node (SGSN) and a GPRS Gateway Support Node (GGSN).

As the PS domain function node of the CN, the SGSN is connected to the UTRAN through the Iu-PS interface, connected to the GGSN through the Gn/Gp interface, and connected to the home location register/authentication center (HLR/AUC) through the Gr interface, through the Gs interface. The MSC/VLR is connected, connected to the Service Control Point (SCP) through the CAP interface, connected to the Short Message Center (SMC) through the Gd interface, and passed through the Ga interface and the charging gateway (Cha rgi ng Ga t eway) , referred to as "CG" for short. The main function of the SGSN is to provide routing forwarding, mobility management, session management, authentication and encryption functions in the PS domain.

The GGSN is used as a functional node of the PS domain of the CN, and is connected to the SGSN through the Gn interface, and is connected to an external data network such as the Internet through the G i interface. The GGSN provides routing and encapsulation of data packets between the WCDMA mobile network and the external data network. The main function of the GGSN is the interface function of the Internet Protocol ("IP") packet network. The GGSN needs to provide the gateway function of the UE to access the external packet network. From the perspective of the external network, the GGSN seems to be It is a router that can address all user IPs in a WCDMA mobile network and needs to exchange routing information with the external network.

In mobile communication systems such as GSM and WCDMA, users must have unique communication. The logo is implemented by the International Mobile Station Identity (IMSI) number. As shown in FIG. 2, the IMSI is composed of a Mobile Country Code ("MCC"), a Mobile Network Code (MNC), and a Mobile Subscriber Identiation Number (MSIN). " ) composition. The MCC consists of three digits, which uniquely defines the number of the country where the mobile signer is located; the MNC consists of two or three digits, and the MNC defines the mobile signer's local GSM public land mobile network (referred to as the Public Lands Mobile Network). "PLMN") identifier; MSIN defines the number of the mobile signer in the GSM PLMN.

In the existing system, when the GGSN processes the MNC, its length is defaulted to 2 bits, that is, the first 5 bits of the IMSI structure are fixed to MCC1, MCC2, MCC3, 匪Cl, MNC2. It is worth noting that MNC1 represents the first digit of the MNC and MNC2 represents the second digit of the MNC.

In addition, the length of the field associated with the MNC specified by the existing system defaults to 2. In the structure of Route Area Identity ("RAI"), 3GPP-IMS I MCC-MNC, 3GPP-GGSN MCC-MNC, PLMN, etc., the structure related to MNC defaults to a length of 2 bits, and its prototype Both use the following IMSI structure:

UINT8 MCC1;

UINT8 MCC2;

UINT8 MCC3;

UINT8 MNC1;

UINT8 MNC2;

UINT8 MSIN1

UINT8 MSIN2

UINT8 MSIN3

UINT8 MSIN4

UINT8 MSIN5

UINT8 MSIN6

UINT8 MSIN7 UINT8 MSIN8;

UINT8 MSIN9;

UINT8 MSIN10; In practical applications, because the length of the MNC is variable, there is a contradiction between the current system processing MNC according to the default mode, which makes the existing technical solution unable to handle different MCCs corresponding to different lengths of MNC.

Summary of the invention

In view of this, the main purpose of the present invention is to provide a method for acquiring and processing a mobile network code, so that different MCCs can be correctly acquired and processed in response to different lengths of MNCs to achieve the above object, and the present invention provides an acquisition and A method for processing a mobile network code, pre-configuring a correspondence between a mobile country code and a mobile network code length; and, comprising the following steps:

B The general packet radio service gateway support node obtains the international mobile station identification number and extracts the mobile country code therefrom;

C queries the corresponding relationship by the mobile country code to obtain the mobile network code length, and obtains a mobile network code from the international mobile station identification number according to the length.

The correspondence between the mobile country code and the mobile network code length is configured in a configuration database of the general packet radio service gateway support node.

In the step C, if there is no information about the mobile network code length corresponding to the mobile country code in the correspondence, the mobile network code length is 2 bits by default.

In the step B, the general packet radio service gateway support node obtains the international mobile station identification number from the activation signaling.

The general packet radio service gateway support node provides a configuration command interface for configuring and querying a correspondence between the mobile country code and the mobile network code length.

The general packet radio service gateway support node obtains an international mobile station identification number through a message interface with the authentication, authorization, and accounting server; the message interface includes the following three parameters: an international mobile station identification number mobile network code length field , general packet radio service gateway Holding the node mobile network code length field, the general packet radio service service supports the node mobile network code length field.

The international mobile station identifies a mobile network code length, the general packet radio service gateway supports a node mobile network code length, and the general packet radio service support node mobile network code length passes through respective mobile country code queries. The configuration database is obtained.

By comparison, it can be found that the technical solution of the present invention is different from the prior art in that, in the method for acquiring and processing the MNC, the MNC with fixed length is not uniformly set, and the database of the MCC and the MNC is determined by querying the database of the MNC. The length is used to obtain the different CC corresponding to the C.

The difference in the technical solution brings about a more obvious beneficial effect. In the method for acquiring and processing the MNC proposed by the present invention, since the correct MNC length is obtained by querying the database, it is possible to correspond to different length MNCs in different MCCs. When the MNC is correctly acquired, it adapts to the variability of the length of the MNC, and the processing of the service is more complete and more in line with the provisions of the latest protocol, which ensures the correctness and comprehensiveness of the signaling processing, and greatly improves the ability of the mobile network interconnection and interworking.

DRAWINGS

1 is a structural diagram of a UMTS in accordance with a preferred embodiment of the present invention;

2 is a block diagram of an IMSI in accordance with a preferred embodiment of the present invention;

3 is a flow chart of a method of acquiring and processing an MNC in accordance with a preferred embodiment of the present invention.

detailed description

The present invention will be further described in detail below with reference to the accompanying drawings.

In general, the principle of the present invention is to add a configuration command for different MNC digits corresponding to different MCC numbers in the system, establish a database corresponding to the MCC and the MNC, or store the corresponding relationship between the MCC and the MNC into an existing one. The database, when processing the IMSI and the structure related to MCC/MNC, can query the database to get the correct MNC length, so as to correctly handle the corresponding business.

The flow of the method for acquiring and processing the MNC of the present invention will be described below with reference to FIG. First, in step 101, the configuration database is set, and the correspondence between the length of the MCC and the MNC is stored in the configuration database through the configuration command through the configuration command interface provided by the device. It should be noted that the same MCC can correspond to multiple MNCs, but the length of different MNCs corresponding to the same MCC is fixed. That is, the length of the MNC is either 2 bits or 3 bits, so The MCC is associated with the length of the MNC.

Next, proceeding to step 102, the GGSN retrieves the 3-digit MCC number from the service involved, or the service including the MCC/MNC cell. Since the MCC is fixed to 3 bits, it is easy to obtain. After the MCC is obtained, the configuration database can perform the MNC length query. The services related to the MCC/MNC cell described herein include the process of obtaining the IMSI cell from the activation signaling by the GGSN, and the GGSN and the Authentication Authorization and Accounting Server (AAA Server). Right billing process, etc.

Then, proceed to step 103, and according to the MCC, find the length value of the corresponding MNC in the configuration database.

In step 104, it is determined whether there is a configuration record for the MCC in the configuration database. If yes, go to step 105, otherwise go to step 106 and think that the MNC is 2 bits long.

In step 105, it is judged whether the length of the MNC found in the configuration database is 2, and if yes, the process proceeds to step 106, and the 2 bits after the MCC are taken as MNC1 and MNC2. Otherwise, go to step 107 and take the 3 bits after MCC as MNC1, MNC2, MNC3.

Then proceed to step 108 to obtain the MSIN. The number after the MNC is MSIN. When the field of '1111' appears, it means the IMSI field ends.

The following relates to the related process of the MCC/MNC cell when the GGSN and the AAA Server described in step 102 perform the authentication fee.

The following three optional message fields are included in the GGSN authentication and charging message to the AAA server: 3GPP-IMSI-MCC-MNC, which indicates the length of the MNC in the user IMSI; 3GPP-GGSN-MCC-MNC , indicating the length of the MNC of the country where the GGSN device is located; 3GPP-SGSN-MCC-MNC, indicating the length of the MNC of the country where the SGSN device is located. Value It should be noted that although these fields are optional in the relevant protocol, these fields must be employed in the present invention. These fields are queried by the respective MCCs in the configuration database to obtain the length of the corresponding MNC. This value is transmitted to the AAA module. The AAA module uses this field to correctly process the relevant cells, thus ensuring the correctness of the GGSN and AAA Server interfaces.

Although the present invention has been illustrated and described with reference to the preferred embodiments of the present invention, those skilled in the art The spirit and scope of the invention is defined by the appended claims.

Claims

Rights request

A method of acquiring and processing a mobile network code, characterized by:

Pre-configure the correspondence between the mobile country code and the mobile network code length; and,

B. The general packet radio service gateway support node acquires the international mobile station identification number and extracts the mobile country code therefrom;

C. Query the corresponding relationship by using the mobile country code to obtain the mobile network code length, and obtain a mobile network code from the international mobile station identification number according to the length.

2. The method for acquiring and processing a mobile network code according to claim 1, wherein a correspondence between the mobile country code and the mobile network code length is configured in a configuration of the general packet radio service gateway support node. In the database.

The method for acquiring and processing a mobile network code according to claim 1, wherein if the mobile network code length information corresponding to the mobile country code is not included in the correspondence, the default is The mobile network code is 2 bits long.

4. The method for acquiring and processing a mobile network code according to claim 1, wherein the general packet radio service gateway support node acquires the international mobile station identification number from activation signaling.

5. The method for acquiring and processing a mobile network code according to claim 1, wherein the general packet radio service gateway support node provides a configuration command interface for configuring and querying the mobile country code and the mobile network. The correspondence between code lengths.

6. The method for acquiring and processing a mobile network code according to claim 2, wherein the general packet radio service gateway support node obtains international mobile station identification through a message interface with an authentication, authorization, and accounting server. The message interface includes the following three parameters: an international mobile station identification number mobile network code length field, a general packet radio service gateway support node mobile network code length field, and a general packet radio service support node mobile network code length field.

The method for acquiring and processing a mobile network code according to claim 6, wherein: the international mobile station identifies a mobile network code length, and the general packet radio service gateway supports a node mobile network code length, The general packet radio service support node mobile network code length is obtained by querying the configuration database by the respective mobile country code.