WO2011147362A1

WO2011147362A1 - Method and apparatus for selecting public land mobile-communication network access network

Info

Publication number: WO2011147362A1
Application number: PCT/CN2011/075343
Authority: WO
Inventors: 闫学霞; 周汉
Original assignee: 华为技术有限公司
Priority date: 2011-02-01
Filing date: 2011-06-03
Publication date: 2011-12-01
Also published as: CN102625418A; CN102625418B

Abstract

The embodiments of the present invention disclose a method and an apparatus for selecting a Public Land Mobile-communication Network (PLMN) access network. The method includes that a home service equipment counts the number of User Equipments (UEs) accessing a first PLMN; the home service equipment sends a notification message according to the number of UEs accessing the first PLMN and preset rules, so as to notify the state of the first PLMN and available PLMNs to the UE. With the embodiments of the present invention, when the number of UEs accessing the first PLMN is greater than a threshold, or when the number of UEs accessing the first PLMN is greater than a threshold and the network state information of the PLMN is abnormal, the home service equipment or a machine type communication (MTC) service may notify the UE to be forbidden to access the PLMN currently, therefore the UE can select to access other PLMNs; thus the users can be effectively controlled to access a network through an available PLMN when the PLMN is going wrong, or in order to meet the requirements of the current PLMN network.

Description

Method and apparatus for selecting a public land mobile communication network access network. The present application claims a method for selecting a public land mobile communication network access network, which is filed on February 1, 201, and whose application number is 201 1 10034390.0. The priority of the Chinese application of the device, the entire contents of which is incorporated herein by reference.

Technical field

Embodiments of the present invention relate to the field of communications technologies, and in particular, to a method and apparatus for selecting a public land mobile communication network access network. Background technique

M2M (machine to machine) is a machine-to-machine wireless communication. M2M in the broad sense includes the following three methods: machine-to-machine, machine-to-mobile (such as user remote monitoring), and mobile-to-machine (such as user remote control).

With the universal application of mobile technology, the number of terminals of M2M will account for more and more of the total number of terminals. M2M's business model can be MVNO (Mobile Virtual Network Operate) or operated by MNO (Mobile Network Operate) operators. In the MVNO mode, one of the possible networking modes is: The M2M operator has its own M2M service platform, does not have its own wireless resources, and does not have a core network element, but has its own PLMN (Public Land Mobile-communication Network, The public land mobile communication network ID may be deployed by the HLR/HSS or the HLR/HSS of the MNO. The HLR is the Home Location Register and the HSS is the Home Subscriber Servers.

In the above MVNO mode, the M2M operator can sign a roaming agreement with different MNO operators, and use the MNO network resources and radio resources to enable M2M users to perform M2M services through the MNO network resources and radio resources. When a MVNO operator signs a roaming agreement with an MNO operator, it usually signs an agreement with multiple MNO operators, that is, in the M2M user. The SIM/USIM card will have multiple PLMN IDs for M2M users to choose to access the network to implement M2M services.

In the prior art, when an M2M user selects an access network among a plurality of PLMN IDs, the PLMN ID is selected according to the priority of the PLMN ID signed in the USIM/SIM card and the strength of the wireless signal of the network corresponding to the PLMN. When a network corresponding to a PLMN has a network problem such as congestion or network failure, the priority of the PLMN ID of the PLMN is unchanged, and the strength of the wireless signal of the network corresponding to the PLMN may also be unchanged. Therefore, in the prior art, when a network problem such as congestion or network failure occurs in a network corresponding to the PLMN currently used by the M2M user, the M2M user selects only according to the priority of the PLMN ID and the strength of the wireless signal of the network corresponding to the PLMN. The outgoing PLMN ID may still be the PLMN ID of the current network problem, and thus cannot access the network normally. Summary of the invention

Embodiments of the present invention provide a method and apparatus for selecting a public land mobile communication network access network to effectively control a user accessing a network from an available PLMN. An embodiment of the present invention provides a method for selecting a PLMN to access a network, including:

The home service device counts the number of UEs accessed on the first PLMN;

The home service device sends a notification message according to the number of UEs accessed on the first PLMN and a preset rule, to notify the UE of the status of the first PLMN or the available PLMN.

An embodiment of the present invention provides an apparatus for selecting a PLMN to access a network, where the apparatus is included in a home service device, where the apparatus includes:

a statistics module, configured to count the number of UEs accessed on the first PLMN;

The first notification module is configured to send a notification message according to the number of UEs accessed on the first PLMN and the preset rule ¹ J to notify the UE of the status of the first PLMN or the available PLMN.

An embodiment of the present invention provides an apparatus for selecting a PLMN to access a network, where the apparatus includes In the device type communication MTC platform, the device includes:

a first message receiving module, configured to receive a second notification message that includes a first UE quantity parameter, when the number of the UEs that the home service device accesses on the first PLMN is greater than the first threshold; The quantity parameter includes: the number of UEs accessed on the first PLMN, or a first parameter indicating that the number of UEs accessed on the first PLMN is greater than a first threshold; And sending, according to the second notification message, a seventh notification message that includes the first notification information to the UE, where the first notification information includes: information that restricts access to the first PLMN and/or a list of currently available PLMNs.

An embodiment of the present invention provides an apparatus for selecting a PLMN to access a network, where the apparatus is included in a machine type communication MTC platform, and the apparatus includes:

a second message receiving module, configured to receive a third notification message that is sent by the home service device and includes a status parameter, where the status parameter includes: the number of UEs accessed on the first PLMN or used to indicate that the first PLMN is connected The first parameter of the number of incoming UEs being greater than the first threshold, and the network state information of the first PLMN;

a second sending module, configured to: when the number of UEs accessed on the first PLMN is greater than the first threshold, and the network status information of the first PLMN is abnormal, send the first notification information to the UE The seventh notification message: the first notification information includes: information limiting access to the first PLMN and/or a list of currently available PLMNs.

A method and apparatus for selecting a public land mobile communication network access network according to an embodiment of the present invention, the home service device statistics the number of UEs accessed on the first PLMN; and then, the home service device according to the number of UEs accessed on the first PLMN And a preset rule, sending a notification message to the UE or the MTC platform; such that the number of UEs accessing on a certain PLMN exceeds a threshold, or the number of UEs accessing on a certain PLMN exceeds a threshold and the PLMN When the network status information is abnormal, the home service device or the MTC platform may notify the UE to restrict access to the PLMN, so that the UE can select other PLMN access; thereby, when the network problem occurs in the PLMN or in order to satisfy the current PLMN network, When required, the user can be effectively controlled to access the network from the available PLMN. DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. Obviously, the drawings in the following description are some embodiments of the present invention. For those skilled in the art, other drawings may be obtained based on these drawings without any creative work.

1 is a flowchart of Embodiment 1 of a method for selecting a PLMN access network according to the present invention; FIG. 2 is a flowchart of Embodiment 2 of a method for selecting a PLMN to access a network according to the present invention; FIG. 3 is a method for selecting a PLMN to access a network according to the present invention; FIG. 4 is a flowchart of Embodiment 4 of a method for selecting a PLMN to access a network according to the present invention; FIG. 5 is a flowchart of Embodiment 5 of a method for selecting a PLMN to access a network according to the present invention; FIG. 7 is a schematic diagram of Embodiment 2 of an apparatus for selecting a PLMN to access a network according to the present invention; FIG. 8 is a schematic diagram of Embodiment 3 of an apparatus for selecting a PLMN to access a network according to the present invention; 9 is a schematic diagram of Embodiment 4 of an apparatus for selecting a PLMN access network according to the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

FIG. 1 is a flowchart of Embodiment 1 of a method for selecting a PLMN to access a network according to the present invention. As shown in FIG. 1, the method includes:

Step 101: The home service device counts the number of UEs accessed on the first PLMN.

The UE in each embodiment of the present invention may be an M2M terminal. Home service in the embodiment of the present invention The device can be an HLR or an HSS. In the following embodiments, the HSS is used as an example. For the process of the home service device being the HLR, refer to the process of the home service device being the HSS.

The identity of each mobility management unit (Mobility Management Entity, MME) includes PLMN ID information. When the UE registers with the MME, the MME may identify the MME by using an authentication request message or a location update message. The IMMN (International Mobile Subscriber Identification Number) of the UE is sent to the HSS. The PLMN ID corresponding to the MME is the PLMN ID of the PLMN accessed by the UE.

After receiving the PLMN ID and IMSI sent by the MME, the HSS adds 1 to the number of UEs accessed on the PLMN corresponding to the PLMN ID. For example: MME1 corresponds to PLMN ID1, PLMN ID1 corresponds to PLMN1, UE1 corresponds to IMSI1, UE2 corresponds to IMSI 2; when UE1 registers with MME1, MME1 sends PLMN ID1 and IMSI 1 to HSS, at which time HSS accesses PLMN 1 The number of UEs is incremented by 1, after which UE2 is also registered to MME1, and MME1 sends PLMN ID1 and IMSI 2 to the HSS, at which time the HSS adds 1 to the number of UEs accessed on PLMN 1.

When the HSS receives the deregistration message (purge message), the HSS will correspond to the PLMN ID.

The number of UEs accessed on the PLMN is decremented by one. In the process of multiple UEs accessing the PLMN and/or exiting the PLMN, the HSS may count the number of UEs accessed on each PLMN. The first PLMN is the PLMN accessed by the current UE.

Step 102: The home service device sends a notification message according to the number of UEs accessed on the first PLMN and a preset rule, to notify the UE of the status of the PLMN or the available PLMN.

The HSS may send a notification message to the UE or the MTC service (MTC service, machine type communication service) to restrict the UE from accessing the PLMN according to the preset rule, when the network of any PLMN does not meet the requirement. And enable the UE to select other PLMN access. The notification message sent by the home service device may be the first notification message sent by the home service device to the UE, or may be the second notification message sent by the home service device to the MTC platform. The preset rule may include: determining whether to restrict access to the PLMN according to the number of UEs accessed by a certain PLMN; or, according to the number of UEs accessed by a certain PLMN, and whether the network status information of the PLMN is abnormal. To decide whether to restrict access to the PLMN. Specifically, the HSS may send a notification message for restricting access to the PLMN or a notification message including a currently available PLMN list to the UE when the number of UEs accessed by any PLMN is greater than a threshold; or, the HSS may When the number of UEs accessed by any PLMN is greater than a threshold, the number of UEs accessed by the PLMN is sent to the MTC platform, and then the MTC platform sends a notification message for restricting access to the PLMN or the transmission includes the current The notification message of the available PLMN list; or, the HSS may send the number of UEs accessed by the PLMN and the network status information of the PLMN to the MTC platform, when the number of UEs accessed by any PLMN is greater than a threshold, and then When the number of UEs accessed by the PLMN is greater than the threshold and the network status information of the PLMN is abnormal, the MTC platform sends a notification message for restricting access to the PLMN or a notification message including a list of currently available PLMNs to the UE. Or, if the number of UEs that the HSS can access in any PLMN is greater than a threshold, and the network status information of the PLMN is abnormal, the number of UEs accessing the PLMN and the PLMN MTC network state information to the platform, and the platform MTC UE transmits a notification message for restricting access to the PLMN, or send a notification message comprises a list of PLMN currently available.

The HSS or the MTC platform notifies the UE of the status of the first PLMN or the available PLMN, that is: the HSS or the MTC platform sends an information broadcast notification message including the status of the first PLMN or the available PLMN, and all of the information can be received. The UE that broadcasts the notification message can receive it.

Notification of the HSS or MTC platform.

When the UE is notified to restrict access to a certain PLMN, the UE may select other available PLMN accesses. In this embodiment, the threshold value in the preset rule may be determined according to actual conditions; each PLMN network has certain requirements for the number of UEs accessed on the PLMN to meet the requirements of normal network operation. .

In the embodiment of the present invention, the home service device counts the number of UEs accessed on the first PLMN; The home service device sends a notification message to the UE or the MTC platform according to the number of UEs accessed on the first PLMN and the preset rule. The number of UEs accessing the first PLMN exceeds a threshold, or When the number of UEs accessed on a PLMN exceeds a threshold and the network status information of the PLMN is abnormal, the home service device or the MTC platform may notify the UE to restrict access to the PLMN, and enable the UE to select another PLMN to access; This can effectively control the user accessing the network from the available PLMN when the PLMN has a network problem or in order to meet the requirements of the current PLMN network.

In the solution provided by the embodiment of the present invention, the HSS may determine whether to restrict access to the PLMN, and when the access to the PLMN needs to be restricted, the HSS directly sends a notification message to the UE; or the MTC platform determines whether to restrict access to the PLMN, and When it is necessary to restrict access to the PLMN, the MTC platform sends a notification message to the UE. The embodiments of the present invention are specifically described below in the following cases.

2 is a flowchart of Embodiment 2 of a method for selecting a PLMN to access a network according to the present invention. As shown in FIG. 2, the method includes:

Step 201: The UE1 registers with the MME1 through the base station (eNB).

The application scenario of this embodiment is: The home service device determines whether to restrict access to the PLMN, and when the access to the PLMN needs to be restricted, the home service device directly sends a notification message to the UE. In the following embodiments, the home service device is described by taking HSS as an example.

Step 202: The MME1 sends an authentication request message or a location update message to the HSS. The authentication request message or the location update message carries the PLMN ID1 of the MME1 and the IMSI corresponding to the UE1.

The PLMN ID1 of the MME1 is the PLMN ID1 of the first PLMN (PLMN 1) accessed by the UE1.

Step 203: The HSS counts the number of UEs that are accessed on the PLMN 1. When the number of UEs that are accessed by the PLMN 1 is greater than the first threshold, step 204 is performed.

The number of accessing UEs on the PLMN 1 by the HSS statistics is described in step 101 of the embodiment shown in FIG. After the HSS receives the PLMN ID1 and IMSI1 sent by the MME1, it will be on the PLMN1. The number of UEs accessed is increased by one.

Step 204: The HSS sends a first notification message including the first notification information to the UE to restrict access to the PLMN 1.

In this embodiment, the UE in the step is not limited, and the HSS sends a first notification message, and the UE that can receive the notification message can receive the notification message, for example, UE1 and UE2 shown in the figure.

The first notification information may include: restricting access to the information of the PLMN 1 and/or the currently available PLMN list; that is, the first notification information is used to restrict the UE from accessing the PLMN 1, or the first notification. The information is used to inform the UE of the currently available PLMN list, or the first notification information is used to notify the UE of the currently available PLMN list and the information for restricting access to the PLMN 1 so that the UE can select other available PLMN accesses. Thereby achieving M2M business. It should be noted that, when the first notification information includes information for restricting access to the PLMN 1, or when the first notification information includes the currently available PLMN list, the first notification information may restrict the UE from accessing the PLMN. That is, when only the currently available PLMN list is included in the first notification information, the currently available PLMN list does not include the PLMN 1 , and the UE obtains the available PLMN access from the list, instead of Access from PLMN 1.

The first notification message may be a cell broadcast message. The cell broadcast message may include a CBC (Cell Broadcast Centre) message and an ACB (Access Class Baring) message. Specifically, the first notification message may be a CBC message or an ACB message, that is, the HSS may send the first notification information to the UE by using a CBC message or an ACB message, and the two notification messages are specifically introduced below.

a. The first notification message is a CBC message, that is, a notification message is sent by using a CBS (Cell Broadcast Service).

The HSS sends a notification message including the first notification information to the CBC, and then the CBC sends a CBC message including the first notification information to the MME; the MME then notifies the corresponding eNB of the first notification information by using the CBC message; The first notification information is broadcast to the UE. The first notification information may include: information that restricts access to the PLMN 1, and/or a list of PLMNs available to the current UE.

b. The first notification message is an ACB message.

The HSS sends an ACB message including the first notification information to the MME1; the MME then notifies the first eNB of the first notification information by using the ACB message; and then the eNB broadcasts the first notification information to the UE by using a broadcast message.

The first notification information may include: information for restricting access to the PLMN 1.

It should be noted that, in the embodiments of the present invention, after the HSS sends a cell broadcast message, all UEs that can receive the message can receive the message.

In another embodiment, a policy of denying UE access may be configured in the HSS, such that when a certain PLMN is restricted from accessing, the HSS rejects a request sent by another UE that is accessing the PLMN, thereby implementing the foregoing embodiment. Based on this embodiment, the embodiment may further include:

Step 205: When the number of UEs accessed on the PLMN 1 is greater than the first threshold, the HSS sends a message rejecting the access to reject the UE currently registered to the PLMN 1 to register with the PLMN 1.

When the number of UEs accessing the PLMN 1 is greater than the first threshold, if another UE accesses the UE

PLMN 1 , then PLMN 1 may cause network congestion due to an increase in the number of UE registrations or because the number of UE registrations does not satisfy the requirements of the PLMN 1 network, whereby the HSS may respond to an authentication request or a location update request. In the response, the current UE is denied access to the network from the PLMN 1, for example, when UE1 or UE2 is the currently accessed UE, a message rejecting the access is sent to the UE.

The foregoing steps are to limit the process of the UE accessing from the PLMN 1. However, after the number of UEs accessed on the PLMN returns to normal, the UE may also be notified that the PLMN is currently available, so that the UE can access the network from the PLMN; On the basis of the foregoing embodiment, after step 205, the embodiment may further include the following steps:

Step 206: When the number of UEs accessed on the PLMN 1 is less than or equal to the first threshold, the HSS sends a fourth notification message including the second notification information to the UE.

The fourth notification message sent by the HSS, and all UEs capable of receiving the notification message It is possible to receive, for example, UE1 and UE2 as shown in the figure.

The second notification information may include: unblocking the information of accessing the PLMN 1 and/or the currently available PLMN list; that is, the second notification message is used to notify the UE that the PLMN 1 is currently accessible, or The second notification information is used to inform the UE of the currently available PLMN list, or the second notification information is used to inform the UE of the currently available PLMN list and the currently accessible PLMN 1 so that the UE can select the PLMN 1 to access. To achieve M2M business.

The number of UEs accessed on the PLMN 1 is changed. When the number of UEs accessed on the PLMN 1 is less than or equal to the first threshold, other UEs may be allowed to access the PLMN 1; thus, when the HSS counts When the number of UEs accessed by the PLMN 1 is less than or equal to the first threshold, the HSS determines whether to send a first notification message to the UE to restrict access to the PLMN 1. If the UE is sent, the HSS will directly use the message that the PLMN 1 is currently available. Notify the UE.

The fourth notification message may be of the same type as the first notification message described in step 204. When the fourth notification message is a CBC message, the second notification information may include: unblocking the information of accessing the PLMN 1, indicating that the UE can access the network from the PLMN 1; and/or, the list of PLMNs available to the current UE . When the fourth notification message is an ACB message, the second notification information may include: canceling the restriction of accessing the information of the PLMN 1.

In the embodiment of the present invention, the HSS counts the number of UEs accessed on the first PLMN; then, when the number of UEs that the HSS accesses on the first PLMN exceeds a threshold, the UE is notified to the PLMN to restrict access, so that the UE can select Other PLMN access; thus, when the network problem of the PLMN occurs or when the requirements of the current PLMN network are met, the user can effectively control the user to access the network from the available PLMN, thereby implementing the M2M service.

3 is a flowchart of Embodiment 3 of a method for a PLMN to access a network according to the present invention. As shown in FIG. 3, the method includes:

Step 301: UE1 registers with MME1 through the eNB.

The application scenario of this embodiment is: The HSS determines whether to restrict access to the PLMN, and needs to be restricted. When accessing the PLMN, the HSS sends a notification message directly to the UE. The difference between the embodiment and the embodiment shown in FIG. 2 includes: In this embodiment, the HSS may further receive network state information of the PLMN to which the MME is sent by the MME.

Step 302: The MME1 sends an authentication request message or a location update message to the HSS. The authentication request message or the location update message carries the PLMN ID1 of the MME1, the IMSI1 corresponding to the UE1, and the network status information of the PLMN to which the MME1 belongs.

In this embodiment, the MME sends the network status information of the PLMN to which the MME1 belongs to the HSS in addition to the PLMN ID1 and the IMSI1. The network status information of the PLMN to which the MME belongs is the network status information of the PLMN1; the network status information may be normal or abnormal, and the network status information may be abnormal: the network is congested or the network is faulty. The MME sends the network status information to the HSS, which enables the HSS to monitor the network status of the PLMN.

Step 303: The HSS counts the number of UEs that are accessed on the PLMN 1. When the number of the UEs that are accessed on the PLMN 1 is greater than the first threshold, and the network status information of the PLMN 1 is abnormal, step 304 is performed.

HSS Statistics The number of access UEs on PLMN 1 is described in step 101 of the embodiment shown in FIG. After receiving the PLMN ID1 and IMSI1 sent by the MME1, the HSS adds 1 to the number of UEs accessed on the PLMN 1.

Step 304: The HSS sends a first notification message including the first notification information to the UE accessed by the current PLMN 1 to restrict access to the PLMN 1 or notify the UE of the currently available PLMN list.

The first notification information and the first notification message may be referred to the specific description in step 204 of the embodiment shown in FIG. 2. The first notification message sent by the HSS can be received by all UEs that can receive the notification message, for example, UE1 and UE2 shown in the figure.

In another embodiment, a policy of denying UE access may be configured in the HSS, such that when the first PLMN is unavailable, the HSS rejects the request sent by the UE that is accessing the PLMN, thereby Based on the foregoing embodiment, the embodiment may further include:

Step 305: When the number of UEs accessed on the PLMN 1 is greater than the first threshold, and the network status information of the PLMN1 is abnormal, the HSS sends a message rejecting the access, to reject the UE currently registered to the PLMN 1 to register with the PLMN. 1.

When the number of UEs accessing the PLMN 1 is greater than the first threshold, and the network status of the PLMN 1 is abnormal, if another UE accesses the PLMN 1, the PLMN 1 may be caused by an increase in the number of UE registrations. The network congestion or the requirement of the PLMN 1 network is not satisfied because of the increase in the number of UE registrations, whereby the HSS may reject the current UE accessing the network from the PLMN 1 in the authentication request response or the location update request response, for example, when UE1 Or when the UE2 is the currently accessed UE, the UE sends a message rejecting the access.

The foregoing steps are to limit the process of the UE accessing the network from the PLMN 1. However, after the number of UEs accessing the PLMN is restored to normal, the UE may also be notified that the PLMN is currently accessible, so that the UE can access the network from the PLMN. Therefore, on the basis of the foregoing embodiment, after step 305, the embodiment may further include the following steps:

Step 306: When the number of UEs accessed on the PLMN 1 is less than or equal to the first threshold, and

When the network status information of the PLMN 1 is normal, the HSS transmits a fourth notification message including the second notification information to the UE.

The second notification information and the fourth notification message may be referred to the specific description in step 206 of the embodiment shown in FIG. 2. The fourth notification message sent by the HSS can be received by all UEs that can receive the notification message, for example, UE1 and UE2 shown in the figure.

The number of UEs accessing the PLMN 1 is changed. When the number of UEs accessing the PLMN 1 is less than or equal to the first threshold, and the network status information of the PLMN 1 is normal, other UEs may be allowed to access the PLMN. Therefore, when the HSS counts that the number of UEs accessed by the PLMN 1 is less than or equal to the first threshold, and the network status information of the PLMN 1 is normal, the HSS determines whether to limit the access to the PLMN 1 to the UE. The first notification message, if sent, the HSS notifies the UE of the currently available message of the PLMN 1. In the embodiment of the present invention, the HSS counts the number of UEs accessed on the first PLMN, and receives network state information of the first PLMN. Then, the number of UEs that the HSS accesses on the first PLMN exceeds a threshold, and the PLMN When the network status information is abnormal, the HSS may restrict the access by the UE to the PLMN, so that the UE can select other PLMN accesses; thereby, it is possible to effectively control the user when the PLMN has a network problem or to meet the requirements of the current PLMN network. The available PLMN accesses the network to implement the M2M service.

4 is a flowchart of Embodiment 4 of a method for a PLMN to access a network according to the present invention. As shown in FIG. 4, the method includes:

Step 401: UE1 registers with MME1 through the eNB.

The application scenario of this embodiment is: The MTC platform determines whether to restrict access to the PLMN, and when the access to the PLMN needs to be restricted, the MTC platform sends a notification message to the UE.

Step 402: The MME1 sends an authentication request message or a location update message to the HSS. The authentication request message or the location update message carries the PLMN ID1 of the MME1 and the IMSI1 corresponding to the UE1.

The PLMN ID1 of the MME1 is the PLMN ID1 of the first PLMN (PLMN 1 ) accessed by the UE1.

Step 403: The HSS counts the number of UEs that are accessed on the PLMN 1. When the number of UEs that are accessed by the PLMN 1 is greater than the first threshold, step 404 is performed.

Step 404: The HSS sends a second notification message including the first UE quantity parameter to the MTC platform, so that the MTC platform notifies the UE of the current restricted access of the PLMN 1 according to the second notification message.

The first UE quantity parameter includes: the number of UEs accessed on the PLMN 1, or the first parameter used to indicate that the number of UEs accessed on the PLMN1 is greater than the first threshold. That is, the HSS may send the number of UEs accessed on the PLMN 1 to the MTC platform, or may be flat to the MTC. The station directly transmits the result that the number of UEs accessed on the PLMN 1 is greater than the first threshold, that is, the first parameter is sent.

Step 405: The MTC platform sends a seventh notification message including the first notification information to the UE according to the second notification message, to notify the UE of the current restricted access of the PLMN 1.

The seventh notification message sent by the MTC platform, all of which can receive the notification message.

The UE can receive, for example, UE1 and UE2 as shown in the figure.

The first notification information may include: restricting access to the information of the PLMN 1 and/or the currently available PLMN list; that is, the first notification information is used to restrict the UE from accessing the PLMN 1, or the first notification. The information is used to inform the UE of the currently available PLMN list, or the first notification information is used to notify the UE of the currently available PLMN list and the information for restricting access to the PLMN 1 so that the UE can select other available PLMN accesses. Thereby achieving M2M business.

The MTC platform receives the second notification message sent by the HSS. According to the second notification message, the MTC platform can learn that the number of UEs accessed on the PLMN 1 is greater than the first threshold. Specifically: the MTC platform receives the access on the PLMN 1. After the number of the UEs is compared, the number of the UEs is compared with the first threshold, and the result that the number of UEs accessed on the PLMN 1 is greater than the first threshold is obtained, or the MTC platform receives the first parameter. After that, the result that the number of UEs accessed on the PLMN 1 is greater than the first threshold is obtained; then the MTC platform sends a seventh notification message including the first notification information to the UE. The seventh notification message may be a cell broadcast message, and may be a CBC message or an ACB message.

When the seventh notification message is a CBC message, the MTC platform sends a CBC message including the first notification information to the MME; the MME then notifies the first eNB of the first notification information by using the CBC message; The first notification information is broadcast to the UE. The first notification information may include: information for restricting access to the PLMN 1, and/or a list of currently available PLMNs.

When the seventh notification message is an ACB message, the MTC platform sends an ACB message including the first notification information to the MME; the MME then notifies the first notification information to the phase through the ACB message. The eNB should then broadcast the first notification information to the UE by the eNB through a broadcast message. The first notification information may include: information for restricting access to the PLMN 1.

When the cell broadcast message is an ACB message, when the MTC platform sends an ACB message to the MME, the MTC platform can directly send the ACB message to the MME, and the MTC platform can also send the ACB message to the MME via the HSS. When the MTC platform sends an ACB message including the first notification information to the MME through the HSS, the policy of rejecting the UE access may be configured in the HSS, so that the HSS rejects the UE that is accessing the PLMN when the certain PLMN is restricted from accessing. The request is sent, and based on the foregoing embodiment, the embodiment may further include:

Step 406: When the HSS receives the first notification message sent by the MTC platform to restrict access to the PLMN 1, the HSS sends a message rejecting the access to reject the UE currently registered to the PLMN 1 to register with the PLMN 1.

When the number of UEs accessed on the PLMN 1 is greater than the first threshold, if another UE accesses the PLMN 1, the PLMN1 may cause network congestion due to an increase in the number of UE registrations or because the number of UE registrations increases. The requirement of the PLMN 1 network is not satisfied, and thus, the HSS may reject the current UE accessing the network from the PLMN 1 in the authentication request response or the location update request response, for example, when UE1 or UE2 is the currently accessed UE. Send a message rejecting access to the UE.

The foregoing steps are to limit the process of the UE accessing from the PLMN 1. However, after the number of UEs accessed on the PLMN returns to normal, the UE may also be notified that the PLMN is currently available, so that the UE can access the network from the PLMN; Therefore, on the basis of the foregoing embodiment, after step 406, the embodiment may further include the following steps:

Step 407: When the number of UEs accessing the PLMN 1 is less than or equal to the first threshold, the HSS sends a fifth notification message including the second UE quantity parameter to the MTC platform, so that the MTC platform sends the message according to the fifth notification message. The UE transmits an eighth notification message including the second notification information to notify the UE that the PLMN 1 is currently accessible.

The eighth notification message sent by the MTC platform, all of which can receive the notification message

The UE can receive, for example, UE1 and UE2 as shown in the figure. The number of UEs accessing the PLMN 1 is changed. When the number of UEs accessing the PLMN 1 is less than or equal to the first threshold, the HSS sends the number of UEs accessed on the current PLMN 1 to the MTC platform. That is, the HSS sends a fifth notification message including the second UE quantity parameter to the MTC platform, where the second UE quantity parameter corresponds to the content included in the first UE quantity parameter, that is, the second UE quantity parameter may include: The number of incoming UEs, or a parameter indicating that the number of UEs accessed on PLMN1 is less than or equal to the first threshold.

Step 408: The MTC platform sends an eighth notification message including the second notification information to the UE according to the fifth notification message, to notify the UE that the PLMN 1 is currently accessible.

After receiving the fifth notification message, the MTC platform can learn that the number of UEs accessed on the PLMN 1 is less than or equal to the first threshold. At this time, the MTC platform determines whether to send the first notification to the UE to restrict access to the PLMN 1. The message, if sent, the B' J MTC platform notifies the UE to cancel the message restricting access to the PLMN 1, that is, the MTC platform sends an eighth notification message including the second notification information. Among them, the message that PLMN 1 can currently access is to cancel the message restricting access to PLMN 1.

The MTC platform may send the message that the PLMN 1 can access the UE to the UE through the eighth notification message. The format and the sending manner of the eighth notification message in step 405 may be the same. The second notification information in the eighth notification message in the step includes: unblocking the information of accessing the PLMN 1, and/or the list of currently available PLMNs.

In the embodiment of the present invention, the HSS counts the number of UEs accessed on the first PLMN; then, when the number of UEs that the HSS accesses on the first PLMN exceeds a threshold, the HSS sends the number of UEs accessed on the PLMN. To the MTC platform; the MTC platform then informs the UE that the PLMN restricts access, so that the UE can select other PLMN accesses; thereby, it is possible to effectively control the user when the PLMN has a network problem or to meet the requirements of the current PLMN network. The available PLMN accesses the network.

FIG. 5 is a flowchart of Embodiment 5 of a method for a PLMN to access a network according to the present invention. As shown in FIG. 5, the method includes:

Step 501: UE1 registers with MME1 through the eNB. The application scenario of this embodiment is: The MTC platform determines whether to restrict access to the PLMN, and sends a notification message to the UE by the MTC platform when the access to the PLMN needs to be restricted. The difference between the embodiment and the embodiment shown in FIG. 4 includes: In this embodiment, when the MTC platform determines whether to restrict access to the PLMN, the network status information of the PLMN is also considered.

Step 502: The MME1 sends an authentication request message or a location update message to the HSS. The authentication request message or the location update message carries the PLMN ID1 of the MME1, the IMSI1 corresponding to the UE1, and the network status information of the PLMN to which the MME1 belongs.

In this embodiment, the MME sends the network status information of the PLMN to which the MME belongs to the HSSo, in addition to the PLMN ID and the IMSI, to the HSS. The network status information of the PLMN to which the MME1 belongs is the network status of the PLMN1. Information; network status information can be normal or abnormal, network status information can be abnormal: network congestion or network failure.

Step 503: The HSS counts the number of UEs accessed on the PLMN 1. The HSS sends a notification message to the MTC platform according to the preset rule.

Specifically, step 503 can include step 503a or step 503b.

Step 503a, the HSS counts the number of UEs accessed on the PLMN 1; when the number of UEs accessed on the PLMN 1 is greater than the first threshold, the HSS sends a third notification message including the status parameter to the MTC platform; 504. The status parameter includes: the number of UEs accessed on the PLMN 1 or the first parameter indicating that the number of UEs accessed on the PLMN 1 is greater than the first threshold, and the network status information of the PLMN 1. In this step, when the number of UEs that the HSS accesses on the PLMN 1 is greater than the first threshold, the number information of the UEs accessed on the PLMN 1 and the network state information of the PLMN 1 are sent to the MTC platform.

Step 503b: The HSS counts the number of UEs accessed on the PLMN 1; when the number of UEs accessed on the PLMN 1 is greater than the first threshold, and the network status information of the PLMN 1 is abnormal, the HSS sends the status parameter to the MTC platform. The third notification message; then step 504 is performed. among them, The status parameter includes: the number of UEs accessed on the PLMN 1 or the first parameter indicating that the number of UEs accessed on the PLMN 1 is greater than the first threshold, and the network status information of the PLMN 1. In this step, when the number of UEs accessed by the HSS on the PLMN 1 is greater than the first threshold, and the network status information of the PLMN 1 is abnormal, the number of UEs accessed on the PLMN 1 and the network status of the PLMN 1 are The information is sent to the MTC platform.

Step 504: The MTC platform acquires, according to the third notification message, the number of UEs accessed on the PLMN 1 and the network state information of the PLMN 1; when the number of UEs accessed on the PLMN 1 is greater than the first threshold, and the PLMN When the network status information of 1 is abnormal, the MTC platform sends a seventh notification message including the first notification information to the UE to restrict the UE from accessing the PLMN 1 or notifying the UE of the currently available PLMN list.

The seventh notification message including the first notification information in this step is described in detail in step 405 of the embodiment shown in FIG. The seventh notification message sent by the MTC platform can be received by all UEs that can receive the notification message, for example, UE1 and UE2 shown in the figure.

When the MTC platform sends the ACB message including the first notification information to the MME through the HSS, the policy of rejecting the UE access may be configured in the HSS, so that the HSS rejects the UE that is accessing the PLMN when the certain PLMN is restricted from accessing. The request is sent, and based on the foregoing embodiment, the embodiment may further include:

Step 505: When the HSS receives the first notification message sent by the MTC platform to restrict access to the PLMN 1, the HSS sends a message rejecting the access to reject the current registration to the PLMN.

For example, when UE1 or UE2 is the currently accessed UE, the HSS sends a message rejecting the access to the UE.

The foregoing steps are to limit the process of the UE accessing the network from the PLMN 1. However, after the number of UEs accessing the PLMN is restored to normal, the UE may also be notified that the PLMN is currently accessible, so that the UE can access the network from the PLMN. Therefore, on the basis of the foregoing embodiment, after step 505, the embodiment may further include the following steps. Step 506: The HSS counts the number of UEs accessed on the PLMN 1. When the number of UEs accessed on the PLMN 1 is less than or equal to the first threshold, the HSS sends a notification message to the MTC platform according to the preset rule. Specifically, step 506 can include step 506a or step 506b.

Step 506a: When the number of UEs accessed on the PLMN 1 is less than or equal to the first threshold, the HSS sends a sixth notification message including the current state parameter to the MTC platform, and then performs step 507.

Step 506b: When the number of UEs accessed on the PLMN 1 is less than or equal to the first threshold, and the network status information of the PLMN 1 is normal, the HSS sends a sixth notification message including the current state parameter to the MTC platform, and then performs the step. 507.

The current state parameters in the step 506a and the step 506b include: the number of UEs accessed on the current PLMN 1 or the first parameter indicating that the number of UEs accessed on the current PLMN 1 is less than or equal to the first threshold. , and network status information of PLMN 1. It should be noted that step 506a may be applied to the same embodiment as step 503a, and step 506b may be applied to the same embodiment as step 503b.

Step 507: After receiving the sixth notification message sent by the HSS, the MTC platform sends the number of UEs accessed on the PLMN 1 to be less than or equal to the first threshold, and the network status information of the PLMN 1 is normal, the MTC platform sends the UE to the UE. An eighth notification message including the second notification information to notify the UE that the PLMN 1 is currently accessible.

The seventh notification message sent by the MTC platform can be received by all UEs that can receive the notification message, for example, UE1 and UE2 shown in the figure.

After receiving the sixth notification message, the MTC platform can learn that the number of UEs accessed on the current PLMN 1 is less than or equal to the first threshold. The MTC platform then determines whether the network status information of the current PLMN 1 is abnormal, if the current PLMN If the network status information of 1 is abnormal, the MTC platform determines whether the seventh notification message for restricting access to the PLMN 1 is sent to the UE. If the message is sent, the MTC platform notifies the UE of the currently available message of the PLMN 1.

The MTC platform may send, by using the eighth notification message, a message that the PLMN 1 can currently access to the UE, and the form and sending manner of the eighth notification message and the seventh notification message in step 504. All may be the same, except that the second notification information in the eighth notification message in this step includes: canceling the restriction of accessing the information of the PLMN 1 and/or the currently available PLMN list.

In the embodiment of the present invention, the HSS collects the number of UEs accessed on the first PLMN, and receives the network status information of the first PLMN. Then, when the number of UEs that the HSS accesses on the first PLMN exceeds the threshold, the HSS The number of UEs accessed on the PLMN and the network status information of the PLMN are sent to the MTC platform; after the number of UEs accessed by the MTC platform on the PLMN exceeds a threshold, and the network status information of the PLMN is abnormal, the notification is sent. The UE is restricted from accessing the PLMN, so that the UE can select other PLMN accesses; thereby, it is possible to effectively control the user to access the network from the available PLMN when the PLMN has a network problem or to meet the requirements of the current PLMN network.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing steps include the steps of the foregoing method embodiments. The foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

FIG. 6 is a schematic diagram of Embodiment 1 of an apparatus for selecting a PLMN to access a network according to the present invention. As shown in FIG. 6, the apparatus is included in a home service device, and the apparatus includes: a statistics module 61 and a first notification module 63.

The statistics module 61 is configured to count the number of UEs accessed on the first PLMNPLMN.

The first notification module 63 is configured to send a notification message according to the number of UEs accessed on the first PLMNPLMN and a preset rule to notify the UE of the status of the first PLMN or the available PLMN.

For the working process and working principle of each module in this embodiment, refer to the description in the method embodiment shown in Figure 1 above, and details are not described herein. The home service device may include an HSS or an HLR.

In the embodiment of the present invention, the statistics module collects the number of UEs accessed on the first PLMN; and then, the first notification module sends a notification message to the UE or the MTC platform according to the number of UEs accessed on the first PLMN and the preset rule; Enabling the number of UEs accessing on the first PLMN to exceed a threshold, or the number of UEs accessing on the first PLMN exceeding a threshold and the network status of the PLMN When the information is abnormal, the home service device or the MTC platform may notify the UE to restrict access to the PLMN, and enable the UE to select another PLMN to access; thereby, when the network problem of the PLMN occurs or when the requirements of the current PLMN network are met, It can effectively control the user accessing the network from the available PLMN.

FIG. 7 is a schematic diagram of Embodiment 2 of an apparatus for selecting a PLMN access network according to the present invention. Based on the apparatus embodiment shown in FIG. 6,

The first notification module 63 may include: a first notification unit 631 and/or a second notification unit 633. Alternatively, the first notification module 63 may include: a third notification unit 635, a fourth notification unit 637, and/or a fifth notification unit 639.

The first notification unit 631 is configured to send, when the number of UEs accessed on the first PLMN is greater than the first threshold, a first notification message including the first notification information to the UE.

The second notification unit 633 is configured to: when the number of UEs accessed on the first PLMN is greater than the first threshold, send a second notification message including the first UE quantity parameter to the MTC platform, so that the MTC platform is configured according to the second notification. The message sends a seventh notification message including the first communication information to the UE. The first UE quantity parameter includes: the number of UEs accessed on the first PLMN, or is used to indicate that the number of UEs accessed on the first PLMN is greater than the first The first parameter of the threshold.

The first notification information includes: information restricting access to the first PLMN and/or a list of currently available PLMNs.

When the first notification module 63 includes: a third notification unit 635, a fourth notification unit 637, and/or a fifth notification unit 639, the apparatus may further include: a receiving module 65.

The receiving module 65 is configured to receive network state information of the PLMN corresponding to the MME sent by the MME, where the third notification unit 635 is configured to: when the number of UEs accessed on the first PLMN is greater than the first threshold, and the network of the first PLMN When the status information is abnormal, the first notification message including the first notification information is sent to the UE.

The fourth notification unit 637 is configured to: when the number of UEs accessed on the first PLMN is greater than the first threshold, send a third notification message including a status parameter to the MTC platform, so that the MTC platform is When the number of UEs accessed on the first PLMN is greater than the first threshold, and the network status information of the first PLMN is abnormal, the seventh notification message including the first communication information is sent to the UE.

The fifth notification unit 639 is configured to: when the number of UEs accessed on the first PLMN is greater than the first threshold, and the network status information of the first PLMN is abnormal, send a third notification message including the status parameter to the MTC platform, So that the MTC platform sends a seventh notification message including the first communication information to the UE according to the third notification message.

The foregoing status parameter includes: a quantity of UEs accessed on the first PLMN or a first parameter indicating that the number of UEs accessed on the first PLMN is greater than a first threshold, and network status information of the first PLMN; The first notification information includes: restricting access to the information of the first PLMN and/or a list of currently available PLMNs.

Further, the apparatus may further include: a second notification module 67 and/or a third notification module 69. The second notification module 67 is configured to: after the first notification unit 631 sends the first notification message including the first notification information to the UE accessed by the current first PLMN, when the number of UEs accessed on the first PLMN is less than or When the first threshold is equal to, the fourth notification message including the second notification information is sent to the UE.

The third notification module 69 is configured to: after the second notification unit 633 sends the second notification message including the first UE quantity parameter to the MTC platform, when the number of UEs accessed on the first PLMN is less than or equal to the first threshold And transmitting, by the MTC platform, a fifth notification message that includes the second UE quantity parameter, so that the MTC platform sends the eighth notification message that includes the second notification information to the UE according to the fifth notification message. The second UE quantity parameter includes: the number of UEs accessed on the first PLMN, or the second parameter used to indicate that the number of UEs accessed on the first PLMN is less than or equal to the first threshold.

The second notification information includes: unrestricting access to the information of the first PLMN and/or a list of currently available PLMNs.

Further, the device may further include: a fourth notification module 60, a fifth notification module 62, and/or a sixth notification module 64.

The fourth notification module 60 is configured to: access the current first PLMN at the third notification unit 635 After the UE sends the first notification message including the first notification information, when the number of UEs accessed on the first PLMN is less than or equal to the first threshold, and the network status information of the first PLMN is normal, the UE sends the a fourth notification message of the second notification information;

The fifth notification module 62 is configured to: after the fourth notification unit 637 sends the second notification message including the status parameter to the MTC platform, when the number of UEs accessed on the first PLMN is less than or equal to the first threshold, The MTC platform sends a sixth notification message including the current state parameter, so that the number of UEs that the MTC platform accesses on the first PLMN is less than or equal to the first threshold, and the network status information of the first PLMN is normal, to the UE An eighth notification message including the second notification information is sent.

The sixth notification module 64 is configured to: after the fifth notification unit 639 sends the second notification message including the status parameter to the MTC platform, when the number of UEs accessed on the first PLMN is less than or equal to the first threshold, and When the network status information of the PLMN is normal, the sixth notification message including the current status parameter is sent to the MTC platform, so that the MTC platform sends the eighth notification message including the second notification information to the UE according to the sixth notification message.

For the working process and working principle of each module and unit in this embodiment, refer to the description in the foregoing method embodiments, and details are not described herein again.

In the embodiment of the present invention, the home service device collects the number of UEs accessed by the first PLMN; and then, the home service device sends a notification message to the UE or the MTC platform according to the number of UEs accessed on the first PLMN and the preset rule; When the number of UEs accessing on the first PLMN exceeds a threshold, or the number of UEs accessed on a certain PLMN exceeds a threshold and the network status information of the PLMN is abnormal, the home service device or the MTC platform may The notification restricts the UE from accessing the PLMN, and enables the UE to select other PLMN accesses; thereby, it can effectively control the user to access the network from the available PLMN when the PLMN has a network problem or to meet the requirements of the current PLMN network. .

FIG. 8 is a schematic diagram of Embodiment 3 of an apparatus for selecting a PLMN access network according to the present invention, the apparatus package In the MTC platform, the device includes: a first message receiving module 81 and a first sending module 83. The first message receiving module 81 is configured to receive a second notification message that includes the first UE quantity parameter, when the number of the UEs that the HSS accesses on the first PLMN is greater than the first threshold, and the first UE quantity parameter. The method includes: the number of UEs accessed on the first PLMN, or the first parameter used to indicate that the number of UEs accessed on the first PLMN is greater than a first threshold.

The first sending module 83 is configured to send, according to the second notification message, a seventh notification message that includes the first notification information to the UE, where the first notification information includes: restricting access to the information of the first PLMN and/or A list of currently available PLMNs.

In the embodiment of the present invention, when the number of the UEs that the home service device accesses on the first PLMN exceeds the threshold, the number of the UEs accessed on the PLMN is sent to the first message receiving module of the MTC platform; The first sending module notifies the UE that the PLMN restricts access, so that the UE can select other PLMN access; thereby, it can effectively control the user from the available PLMN when the PLMN has a network problem or when the requirements of the current PLMN network are met. Access to the network.

FIG. 9 is a schematic diagram of Embodiment 4 of an apparatus for selecting a PLMN to access a network according to the present invention. The apparatus is included in an MTC platform, and the apparatus includes: a second message receiving module 91 and a second sending module 93.

The second message receiving module 91 is configured to receive a third notification message that is sent by the HSS and includes a status parameter. The status parameter includes: the number of UEs accessed on the first PLMN or used to indicate that the first PLMN is connected. The number of incoming UEs is greater than a first parameter of the first threshold, and network status information of the first PLMN.

The second sending module 93 is configured to: when the number of UEs accessed on the first PLMN is greater than the first threshold, and the network status information of the first PLMN is abnormal, send the first notification information to the UE. The seventh notification message. The first notification information includes: information limiting access to the first PLMN and/or a list of currently available PLMNs. For the working process and working principle of each module and unit in this embodiment, refer to the description in the foregoing method embodiments, and details are not described herein again.

In the embodiment of the present invention, when the number of the UEs that the home service device accesses on the first PLMN exceeds the threshold, the home service device sends the number of the UEs accessed on the PLMN and the network state information of the PLMN to the MTC platform. a second message receiving module; after the second sending module of the MTC platform exceeds the threshold value, and the network status information of the PLMN is abnormal, the UE is notified that the PLMN is restricted from accessing, so that the UE Other PLMN accesses can be selected; thus, it is possible to effectively control the user accessing the network from the available PLMNs when the PLMN has a network problem or in order to meet the requirements of the current PLMN network.

It should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

Claim

A method for selecting a public land mobile communication network PLMN to access a network, characterized in that:

The home service device counts the number of UEs accessed on the first PLMN;

The method according to claim 1, wherein the sending, by the home service device, the notification message according to the number of UEs accessed on the first PLMN and the preset rule includes:

When the number of UEs accessed on the first PLMN is greater than the first threshold, the home service device sends a first notification message including the first notification information to the UE; or

When the number of the UEs accessed on the first PLMN is greater than the first threshold, the home service device sends a second notification message including the first UE quantity parameter to the machine type communication MTC platform, so that the MTC platform is configured according to the The second notification message sends a seventh notification message that includes the first communication information to the UE. The first UE quantity parameter includes: the number of UEs accessed on the first PLMN, or used to indicate the first The number of UEs accessed on the PLMN is greater than the first parameter of the first threshold;

The first notification information includes information restricting access to the first PLMN and/or a list of currently available PLMNs.

The method according to claim 1, further comprising: the home service device receiving network state information of the PLMN corresponding to the MME sent by the mobility management unit MME; the home service device according to the first PLMN The number of UEs accessed and preset rules, sending notification messages include:

When the number of the UEs that are accessed on the first PLMN is greater than the first threshold, and the network status information of the first PLMN is abnormal, the home service device sends a first notification message including the first notification information to the UE; Or

When the number of UEs accessed on the first PLMN is greater than the first threshold, the home service setting The device sends a third notification message including the status parameter to the MTC platform, so that the number of UEs that the MTC platform accesses on the first PLMN is greater than the first threshold, and the network status information of the first PLMN is Sending a seventh notification message including the first communication information to the UE when the abnormality occurs; the status parameter includes: the number of UEs accessed on the first PLMN or the number of UEs accessed on the first PLMN a first parameter greater than the first threshold, and network state information of the first PLMN; or

When the number of UEs accessed on the first PLMN is greater than the first threshold, and the network status information of the first PLMN is abnormal, the home service device sends a third notification message including the status parameter to the MTC platform, to And causing the MTC platform to send, to the UE, a seventh notification message that includes the first communication information according to the third notification message, where the status parameter includes: the number of UEs accessed on the first PLMN or used to indicate the The first parameter of the number of UEs accessed on the first PLMN is greater than the first threshold, and the network status information of the first PLMN;

4. The method according to claim 2, further comprising:

When the number of the UEs accessed on the first PLMN is greater than the first threshold, or when the home service device receives the notification sent by the MTC platform to restrict access to the first PLMN When the message is received, the home service device rejects the UE currently registered to the first PLMN to register with the first PLMN.

5. The method of claim 2, wherein:

The sending, by the home service device, the first notification message that includes the first notification information to the UE that is currently accessed by the first PLMN, further includes: when the number of UEs accessed on the first PLMN is less than or equal to the The first threshold value, the home service device sends a fourth notification message including the second notification information to the UE; or

After the second serving message that the home service device sends the first UE number parameter to the MTC platform, the method further includes: when the number of UEs accessed on the first PLMN is less than or equal to the first a threshold value, the home service device sends a fifth notification message including the second UE quantity parameter to the MTC platform, so that the MTC platform sends the second notification information to the UE according to the fifth notification message. The eighth notification message; the second UE quantity parameter includes: the number of UEs accessed on the first PLMN, or used to indicate that the number of UEs accessed on the first PLMN is less than or equal to the first threshold The second parameter of the value;

The second notification information includes: unblocking access to the first PLMN and/or a currently available PLMN list.

6. The method according to claim 3, further comprising:

When the number of UEs accessed on the first PLMN is greater than the first threshold and the network status information of the first PLMN is abnormal, or when the home service device receives the information sent by the MTC platform When restricting access to the notification message of the first PLMN, the home service device rejects a UE currently registered to the first PLMN to register with the first PLMN.

7. The method of claim 3, wherein:

The sending, by the home service device, the first notification message that includes the first notification information to the UE that is currently accessed by the first PLMN, further includes: when the number of UEs accessed on the first PLMN is less than or equal to the a first threshold, and when the network status information of the first PLMN is normal, the home service device sends a fourth notification message including the second notification information to the UE; or

After the home service device sends the second notification message including the status parameter to the MTC platform, the method further includes: when the number of UEs accessed on the first PLMN is less than or equal to the first threshold, the home service The device sends a sixth notification message including the current state parameter to the MTC platform, so that the number of UEs that the MTC platform accesses on the first PLMN is less than or equal to the first threshold, and the first When the network status information of the PLMN is normal, sending an eighth notification message including the second notification information to the UE; or

After the home service device sends the second notification message including the status parameter to the MTC platform, the method further includes: when the number of UEs accessed on the first PLMN is less than or equal to the first threshold, and the first When the network status information of the PLMN is normal, the home service device is flat to the MTC. The station sends a sixth notification message including the current state parameter, so that the MTC platform sends an eighth notification message including the second notification information to the UE according to the sixth notification message;

A device for selecting a public land mobile communication network PLMN to access a network, the device is included in a home service device, and the device includes:

The device according to claim 8, wherein the first notification module comprises: a first notification unit, configured to: when the number of UEs accessed on the first PLMN is greater than a first threshold, Transmitting, by the UE, a first notification message including the first notification information; or

a second notification unit, configured to: when the number of UEs accessed on the first PLMN is greater than the first threshold, send a second notification message including the first UE quantity parameter to the machine type communication MTC platform, so that the MTC The platform sends a seventh notification message including the first communication information to the UE according to the second notification message; the first UE quantity parameter includes: the number of UEs accessed on the first PLMN, or used to indicate the The number of UEs accessed on the first PLMN is greater than the first parameter of the first threshold;

10. Apparatus according to claim 8 wherein:

The device further includes: a receiving module, configured to receive network state information of the PLMN corresponding to the MME sent by the mobility management unit MME;

The first notification module includes: a third notification unit, a fourth notification unit, or a fifth notification unit; the third notification unit is configured to: when the number of UEs accessed on the first PLMN is greater than the first gate a limit value, and when the network status information of the first PLMN is abnormal, sending a first notification message including the first notification information to the UE;

The fourth notification unit is configured to: when the number of UEs accessed on the first PLMN is greater than the first threshold, send a third notification message including a status parameter to the MTC platform, so that the MTC platform is in the And sending, by the UE, a seventh notification message including the first communication information, when the number of the UEs that are accessed on the first PLMN is greater than the first threshold, and the network status information of the first PLMN is abnormal;

The fifth notification unit is configured to: when the number of UEs accessed on the first PLMN is greater than the first threshold, and the network status information of the first PLMN is abnormal, send the third state including the status parameter to the MTC platform. Notifying the message, so that the MTC platform sends a seventh notification message including the first communication information to the UE according to the third notification message;

The status parameter includes: a number of UEs accessed on the first PLMN or a first parameter indicating that the number of UEs accessed on the first PLMN is greater than a first threshold, and the first Network status information of the PLMN;

The device according to claim 9, wherein the device further comprises: a second notification module or a third notification module;

The second notification module is configured to: after the first notification unit sends a first notification message including the first notification information to the UE currently accessed by the first PLMN, when the first PLMN accesses Sending a fourth notification message including the second notification information to the UE when the number of the UEs is less than or equal to the first threshold value;

The third notification module is configured to: when the second notification unit sends the second notification message including the first UE quantity parameter to the MTC platform, when the number of UEs accessed on the first PLMN is less than or equal to And sending, by the MTC platform, a fifth notification message that includes the second UE quantity parameter, to enable the MTC platform to send the eighth information including the second notification information to the UE according to the fifth notification message. a notification message; the second UE quantity parameter includes: the first PLMN The number of the UEs that are accessed, or the second parameter used to indicate that the number of UEs accessed on the first PLMN is less than or equal to the first threshold;

The device according to claim 10, wherein the device further comprises: a fourth notification module, a fifth notification module or a sixth notification module;

The fourth notification module is configured to: after the third notification unit sends a first notification message including the first notification information to the UE currently accessed by the first PLMN, when the first PLMN accesses When the number of the UEs is less than or equal to the first threshold, and the network status information of the first PLMN is normal, sending a fourth notification message including the second notification information to the UE;

The fifth notification module is configured to: after the fourth notification unit sends a second notification message including a status parameter to the MTC platform, when the number of UEs accessed on the first PLMN is less than or equal to the first And sending, to the MTC platform, a sixth notification message that includes a current state parameter, so that the number of UEs that the MTC platform accesses on the first PLMN is less than or equal to the first threshold, and When the network status information of the first PLMN is normal, sending an eighth notification message including the second notification information to the UE;

The sixth notification module is configured to: after the fifth notification unit sends a second notification message including a status parameter to the MTC platform, when the number of UEs accessed on the first PLMN is less than or equal to the first a threshold value, and when the network status information of the first PLMN is normal, sending a sixth notification message including a current state parameter to the MTC platform, so that the MTC platform sends the second notification message to the UE according to the sixth notification message. The eighth notification message of the notification information;

13. A device for selecting a public land mobile communication network PLMN to access a network, the device being included in a machine type communication MTC platform, wherein the device comprises:

a first message receiving module, configured to receive a UE that is accessed by the home service device on the first PLMN The second notification message that includes the first UE quantity parameter is sent when the number is greater than the first threshold; the first UE quantity parameter includes: the number of UEs accessed on the first PLMN, or used to indicate And the first sending module is configured to send, to the UE, a seventh notification that includes the first notification information according to the second notification message, where the number of the UEs that are accessed by the first PLMN is greater than the first threshold of the first threshold. The first notification information includes: information limiting access to the first PLMN and/or a list of currently available PLMNs.

14. A device for selecting a public land mobile communication network PLMN to access a network, the device being included in a machine type communication MTC platform, wherein the device comprises: