CN1671241A - A method for implementing limitation of roaming between networks of different types - Google Patents

Abstract

The present invention is a method for realizing roaming restrictions between different types of networks. The key lies in configuring roaming restriction rules in the core network equipment MSC/SGSN in advance, and adding the subscription service type in the subscription information of mobile users. The method includes the following Steps: Step A: The mobile user terminal sends an access request to the core network equipment MSC/SGSN; Step B: After receiving the access request, the MSC/SGSN obtains the subscription including the user's subscription service type from the HLR to which the user belongs Information, and the MSC/SGSN determines the type of access network where the user is located; step C: MSC/SGSN according to the type of subscription service of the mobile user, the type of access network where the mobile user is located, and according to the roaming restriction rules configured on the MSC/SGSN, Judging whether the mobile user is allowed to access the network, if yes, allowing the mobile user to access the network, otherwise, denying the user access to the network.

Description

A Method for Realizing Roaming Restriction Between Different Types of Networks

technical field

The invention belongs to the technical field of mobile communication, and in particular relates to a method for realizing roaming restriction between different types of networks.

Background technique

At present, with the increasing popularity of mobile communication technology, mobile users roam between mobile networks of the same type provided by different operators, or operators of a certain type of mobile network impose roaming restrictions on mobile users of this type of mobile network It is already a very common phenomenon, and related technologies for realizing roaming restrictions between the same types of networks as described above are also very mature. Taking the Global System for Mobile Phones (GSM) network as an example, the GSM networks of different network operators have different public land mobile network (PLMN) numbers. The PLMN information corresponding to the user identification such as the number (MSISDN) can well solve the problem of roaming restrictions between PLMN networks. In this way, mobile users of the GSM network can roam between GSM networks of different operators, and, Operators of GSM networks can also impose roaming restrictions on mobile users of some GSM networks.

However, as the types of networks used to implement mobile communications continue to increase, mobile users can choose more types of mobile communication networks to implement communications. Therefore, with the emergence of more types of networks for implementing mobile communications, different types of mobile networks need to be implemented roaming restrictions.

For example, after the current mobile operators have built a Wideband Code Division Multiple Access (WCDMA) network, some network operators may have a GSM network and a WCDMA network at the same time, or the GSM and WCDMA access networks correspond to a core network. The GSM network and the WCDMA network can use two different PLMN numbers respectively, and can also share one PLMN number. In this case, the following roaming restrictions will be required:

1. Different mobile networks have different roaming restriction rules for GSM users and WCDMA users respectively. That is to say, a service network of a mobile user can allow a GSM user of a certain operator to access its GSM network according to the roaming restriction rules of the network. and WCDMA network, while another service network only allows GSM users of a certain operator to access its GSM network;

2. Even if the GSM network and the WCDMA network use the same PLMN number, the service network of the mobile user can also distinguish whether the user is a WCDMA user or a GSM user according to the subscription information of the mobile user, and then perform corresponding roaming according to the network type of the user limit.

In order to realize the above-mentioned roaming restriction, it is necessary to distinguish GSM users from WCDMA users. However, the WCDMA specification did not consider the need to distinguish GSM users from WCDMA users at the beginning of the design. Therefore, in the GSM/WCDMA network, the home location register ( HLR), Mobile Switching Center (MSC)/Serving General Packet Radio Service Support Node (SGSN) and other equipment cannot distinguish whether a user is a GSM user or a WCDMA user; when the user belongs to a network where GSM and WCDMA share a PLMN number, the service The network cannot determine whether the user belongs to a GSM user or a WCDMA user according to the PLMN number of the user's home network, and cannot implement roaming restrictions on different networks for the user, thereby failing to meet the above roaming restriction requirements.

Similarly, the above-mentioned problem of not being able to meet roaming restriction requirements also exists among other different types of networks.

Contents of the invention

In view of this, the main purpose of the present invention is to provide a method for implementing roaming restrictions between different types of networks, which can distinguish different types of network users, and perform roaming restrictions based on the user's network type, so as to meet the requirements of the operator's internal or operator's requirements. Roaming restrictions between different types of networks are required.

In order to achieve the above purpose, the present invention provides a method for implementing roaming restrictions between different types of networks. The key is to configure roaming restriction rules in the core network equipment MSC/SGSN in advance, and add the subscription service in the subscription information of mobile users type, the method includes the following steps:

Step A: The mobile user terminal sends an access request to the core network equipment MSC/SGSN;

Step B: After receiving the access request, the MSC/SGSN obtains the subscription information including the user's subscription service type from the HLR to which the user belongs, and determines the access network type of the user with the MSC/SGSN;

Step C: The MSC/SGSN judges whether to allow the mobile user to access the network according to the type of subscription service of the mobile user, the type of access network, and the roaming restriction rules configured on the MSC/SGSN, and if so, allow the mobile user to access the network. The mobile user accesses the network, otherwise, the user is denied access to the network.

Wherein, the configuration roaming restriction rule is a static configuration roaming restriction rule.

Wherein, the roaming restriction rules include at least one of the following rules:

Allow mobile users belonging to one network to access all types of networks;

Prohibit mobile users belonging to one network from accessing all types of networks;

Allow mobile users of the first network type belonging to one network to access the first type of network, while prohibiting access to the second type of network;

Allowing mobile users of the first network type belonging to one network to access the first type network and the second type network;

Allow mobile users of the second network type belonging to one network to access the second type of network, while prohibiting access to the first type of network;

Mobile users of the second network type belonging to one network are allowed to access the first type network and the second type network.

Wherein, the first type network is a GSM network, and the second type network is a WCDMA network.

Wherein, adding the subscription service type in the subscription information of the mobile user includes:

Add GSM contract service type and WCDMA contract service type in the contract information.

Wherein, the determination of the access network type in step B includes:

The MSC/SGSN uses the corresponding relationship between the location area/routing area and the access network type configured on itself, and determines the access network type according to the location area/routing area identifier in the access request in step A.

Wherein, the determination of the access network type in step B includes:

MSC/SGSN utilizes the corresponding relationship between the access network equipment type configured on itself and the access network type, and determines the access network type according to the access network equipment type in the access request in step A .

Wherein, the determination of the access network type in step B includes:

MSC/SGSN uses the corresponding relationship between the interface type and the access network type between the access network equipment configured on itself and the core network equipment, according to the same The type of the interface between the core network devices is determined to obtain the type of the access network.

Wherein, the MSC is implemented by an MSC server.

It can be seen that, by adding the type of user subscription service in the user subscription information, the present invention enables the method provided by the present invention to distinguish users of different network types, and for different types of network users, according to pre-configured restriction rules Roaming restriction, thus, the method can meet the requirement of roaming restriction within an operator or among different types of networks among operators under various network conditions, and is beneficial to the operation of the network operator.

Description of drawings

Fig. 1 is the flowchart of realizing the present invention.

Detailed ways

The present invention is a method for restricting roaming among different types of networks. The method distinguishes users of different network types by adding user subscription service types in user subscription information, and realizes the roaming restriction for different types of network users according to pre-configured roaming restriction rules. Roaming restrictions, so as to meet roaming restrictions.

The present invention will be described in detail below in conjunction with the accompanying drawings. For the convenience of description, the following embodiments of the present invention only take the roaming restriction method between the GSM network and the WCDMA network as an example for illustration. This description is only descriptive and should not be considered as limiting the scope of the present invention. Other differences The roaming restriction method between type networks is similar to the embodiment described below.

In order to realize the present invention, firstly, it is necessary to increase the user subscription service type information in the subscription information of each mobile user in advance. Type information is divided into two types: GSM users and WCDMA users. Among them, GSM users refer to users who subscribe to GSM/General Packet Radio Service (GPRS)/Enhanced Data Rate GSM Services (EDGE) services, rather than users who can only access To the user of the GSM network, the WCDMA user refers to the user who signs up for the WCDMA service, rather than the user who can only access the WCDMA network; in other embodiments of the present invention, it can also be a mobile user Adding other types of contract service type information, the content and quantity of the contract service type information will not affect the realization of the present invention;

At the same time, in order to realize the present invention, it is also necessary to statically configure the roaming restriction rules in the core network equipment MSC/SGSN of the mobile network, for example, the following roaming restriction rules can be configured:

Static configuration in the core network equipment MSC/SGSN of China Mobile Network allows GSM users whose PLMN number is Hong Kong Mobile Network to access China Mobile's GSM network, but prohibits them from accessing China Mobile's WCDMA network;

Among them, in the present invention, according to the requirements of roaming restriction, the configured roaming rules may include the following types:

1. Users with a PLMN number are prohibited from accessing all networks including GSM networks and WCDMA networks;

2. Allow users with one PLMN number to access all networks including GSM network and WCDMA network;

3. Allow a GSM user with a PLMN number to access the GSM network, but prohibit access to the WCDMA network;

4. Allow a GSM user with a PLMN number to access the GSM network and WCDMA network;

5. Allow a WCDMA user with a PLMN number to access the WCDMA network, but prohibit access to the GSM network;

6. Allow WCDMA users with a PLMN number to access GSM network and WCDMA network;

Mobile network operators can choose one or more of the above roaming rules to be statically configured in the MSC/SGSN of the core network according to the actual needs of roaming restrictions, but the selected roaming rules should ensure that the roaming rules set for the same PLMN number The rules are not contradictory to each other; among them, when selecting multiple roaming rules to be statically configured in the MSC/SGSN of the core network, the data structure shown in Table 1 can be used to store the static configuration rules, and the MSC/SGSN can use this table to obtain the corresponding roaming rules , and use this rule to implement roaming restrictions;

PLMN number User contract business type Allow access to the network Forbid access to the network 46000 GSM GSM WCDMA 46001 GSM GSM WCDMA 45400 WCDMA WCDMA GSM 45406 WCDMA GSM WCDMA 52501 All networks 52503 All networks

Table 1

Wherein, in other embodiments of the present invention, access rules with different content can also be statically configured according to the requirements of roaming restrictions, and the statically configured access rules can also be implemented in other forms of data structures, which does not affect the scope of the present invention. accomplish;

Using the newly added subscription service type in the access rules statically configured as described above and the user subscription information, referring to Fig. 1, the present invention realizes access restriction and includes the following steps:

Step 101: After the user's mobile terminal accesses the access network of the service network, it sends an access request to the core network equipment MSC/SGSN of the service network, so as to request access to the service network;

Step 102: After receiving the access request, the MSC/SGSN obtains the user's subscription information from the user's home HLR according to the user ID in the access request, and obtains the PLMN number of the user's home network based on the user ID analysis ; Wherein, the obtained subscription information includes the user subscription service type preset as described above;

The above step 101 and step 102 are the steps adopted in the prior art to realize network access, and those skilled in the art can realize it without creative work;

Step 103: The MSC/SGSN judges the type of the access network where the user who initiates the access request is located;

Step 104: MSC/SGSN according to the user's subscription service type obtained in step 102, the PLMN number of the user's home network, and the type of access network where the user is determined in step 103, according to the pre-static Configured access rules to determine whether the user is allowed to access the network, if yes, then perform step 105, otherwise, perform step 106;

Step 105: MSC/SGSN sends an access permission response to the user, and the user accesses the service network after receiving the response, implements roaming, and ends the network access process;

Step 106: MSC/SGSN sends an access rejection response to the user, the user's request to access the service network fails, and the network access process ends;

Wherein, the specific realization of the type of the access network where the user who initiated the access request is determined in step 103 as described above is as follows:

In the core network equipment MSC/SGSN, the access network type corresponding to the location area (LA)/routing area (RA) is statically configured in advance. In the embodiment of the present invention, the configured access network type includes GSM access network and WCDMA access network, after MSC/SGSN receives the access request of the user's mobile terminal, according to the LA/RA identifier in the request message, the user's access network type can be judged by the pre-statically configured access network type corresponding to LA/RA access network type;

In other embodiments of the present invention, step 103 may also be implemented in the following manner:

Since the access network devices of different access networks are different, the access network type corresponding to the access network device type can be statically configured in the core network device MSC/SGSN, and the MSC/SGSN The access network equipment of the mobile terminal of the user is judged by the incoming request message, and the current access network type of the user is judged according to the static configuration in the MSC/SGSN; wherein, in the embodiment of the present invention, the access network of the GSM network The network equipment GSM BSC is different from the access network equipment WCDMA RNC in the WCDMA network. Therefore, in the embodiment of the present invention, the static configuration of the access network equipment GSM BSC corresponds to the GSM access network type in the MSC/SGSN, and the access network The device WCDMA RNC corresponds to the WCDMA access network type, and then analyzes the user's mobile terminal access network device according to the user's access request message, and the MSC/SGSN obtains the access network type by judging the access network device according to the static configuration;

Wherein, since the interface types between the access network equipment and the core network equipment MSC/SGSN are different, therefore, in other embodiments of the present invention, the interface type between the access network equipment and the core network equipment MSC/SGSN may also be Determine the access network type. In these embodiments, the MSC/SGSN pre-configures the correspondence between the interface type and the access network type between the access network device and the core network device MSC/SGSN, and then the MSC The /SGSN determines the type of the access network by using the corresponding relationship according to the type of the interface transmitting the access request message.

In the present invention, the above-mentioned MSC can also be realized by the MSC server, which does not affect the realization of the present invention.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (9)

1, a kind of method that realizes the restriction of different type network internetwork roaming is characterized in that, restriction rule is roamed in configuration in equipment of the core network MSC/SGSN in advance, and increases this signing service type in mobile subscriber's CAMEL-Subscription-Information, and this method may further comprise the steps:

Steps A: mobile subscriber terminal sends the request of access to equipment of the core network MSC/SGSN;

After step B:MSC/SGSN receives the request of inserting, obtain to comprise the CAMEL-Subscription-Information of this user's signing service type and the access network type that MSC/SGSN determines this user place from the HLR of this user attaching;

Step C:MSC/SGSN is according to this mobile subscriber's signing service type, the access network type at place, according to the roaming restriction rule that on MSC/SGSN, disposes, judge whether to allow this accessing network by mobile user, if, then allow this accessing network by mobile user, otherwise, refuse this user access network.

2, method according to claim 1 is characterized in that, described configuration roaming restriction rule is a static configuration roaming restriction rule.

3, method according to claim 1 is characterized in that, described roaming restriction rule comprises at least a of following rule:

Allow the mobile subscriber who belongs to a network to insert all types network;

Forbid that the mobile subscriber who belongs to a network inserts all types network;

Allow the first network type mobile subscriber who belongs to a network to insert first kind network, and forbid inserting second type network;

Allow the first network type mobile subscriber who belongs to a network to insert the first kind network and second type network;

Allow the second network type mobile subscriber who belongs to a network to insert second type network, and forbid inserting first kind network;

Allow the second network type mobile subscriber who belongs to a network to insert the first kind network and second type network.

4, method according to claim 3 is characterized in that, described first kind network is the GSM network, and second type network is the WCDMA network.

5, method according to claim 1 is characterized in that, described this signing service type that increases in mobile subscriber's CAMEL-Subscription-Information comprises:

In CAMEL-Subscription-Information, increase GSM signing service type and WCDMA signing service type.

6, method according to claim 1 is characterized in that, the described definite access network type of step B comprises:

The location area that the MSC/SGSN utilization is disposed on himself and the corresponding relation of access network type determine to obtain described access network type according to the location area sign that inserts described in the steps A in the request.

7, method according to claim 1 is characterized in that, the described definite access network type of step B comprises:

Access network equipment type that the MSC/SGSN utilization is disposed on himself and the corresponding relation between the access network type determine to obtain described access network type according to the access network equipment type that inserts in the request described in the steps A.

8, method according to claim 1 is characterized in that, the described definite access network type of step B comprises:

MSC/SGSN utilizes the access network equipment that disposes on himself with interface type between the equipment of the core network and the corresponding relation between the access network type, determines to obtain described access network type according to the access network equipment that transmits described access request in the steps A with the type of the interface between the equipment of the core network.

9, method according to claim 1 is characterized in that, described MSC is realized by the MSC server.

Images