WO2023272669A1

WO2023272669A1 - Paging method and related apparatus

Info

Publication number: WO2023272669A1
Application number: PCT/CN2021/103898
Authority: WO
Inventors: 应江威; 杨艳梅; 陈磊
Original assignee: 华为技术有限公司
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2023-01-05

Abstract

The present application provides a paging method and a related apparatus. The method is applied to a terminal device. The terminal device comprises a first USIM and a second USIM. The method comprises: receiving a first paging message and a network identifier from an access network device, the first paging message comprising an identifier of the first USIM, the first paging message being used for indicating that a USIM indicated by the identifier of the first USIM is paged, and the network identifier being used for identifying one or more networks supported by the access network device; and in the case that the first USIM and the second USIM belong to one or more networks, establishing a first control plane connection of the first USIM and the access network device, and a second control plane connection of the second USIM and the access network device, wherein the first control plane connection and the second control plane connection are identical. By implementing embodiments of the present application, the problem of how to page the USIM in an MOCN sharing scenario is solved.

Description

A paging method and related device

technical field

The present application relates to the technical field of communications, and in particular to a paging method and a related device.

Background technique

With the rapid development of communication technology, terminal devices such as mobile phones have become the main tools for communication in people's daily life and work. In this process, referring to FIG. 1A , it can be seen that the Tx/Rx (sending/receiving) capability of the terminal device has also developed from the initial 1Tx/1Rx to the current 1Tx/2Rx. Meanwhile, referring to FIG. 1A , it can be seen that the terminal equipment has the capability of multiple universal subscriber identity modules (multiple USIM, MUSIM). That is, a terminal device may include multiple USIMs.

At present, in order to efficiently realize the network coverage of the 5th generation mobile networks (5G), quickly form 5G service capabilities, enhance the market competitiveness of 5G networks and services, and improve network efficiency and asset operation efficiency, multiple operations are proposed. Shared by multiple operator core network (MOCN). In the scenario where multiple USIMs and MOCNs are combined, the current technology still needs to perform paging and establish a communication connection for each USIM separately, and there may be paging time conflicts between multiple different USIMs, resulting in paging efficiency and network resources. The utilization rate is low, how to improve the efficiency of paging the USIM and the utilization rate of network resources in this scenario has become a technical problem to be solved urgently at the current stage.

Contents of the invention

Embodiments of the present application provide a paging method and a related device, which solve the problem of how to page a USIM in an MOCN sharing scenario.

In a first aspect, a paging method is provided, the method is applied to a terminal device, and the terminal device includes a first Universal Subscriber Identity Module USIM and a second USIM, and the method includes:

Receive a first paging message and a network identifier from the access network device, where the first paging message includes the identifier of the first USIM, and the first paging message is used to indicate the USIM indicated by the identifier of the first USIM being paged, the network identifier is used to identify one or more networks supported by the access network device;

If the first USIM and the second USIM belong to the one or more networks, establishing a first control plane connection between the first USIM and the access network device, and the second USIM It is connected to the second control plane of the access network device; wherein, the first control plane connection is the same as the second control plane connection.

It can be seen that, in the above technical solution, the access network device can send a network identifier and a paging message for paging the identifier of the first USIM to the terminal device, so that the terminal device is supported by the first USIM and the second USIM belonging to the access network device. In the case of one or more networks, the first control plane connection between the first USIM and the access network device, and the second control plane connection between the second USIM and the access network device are established, so that the paging of the first The USIM establishes a communication connection with the access network device for the paged first USIM and the unpaged second USIM. At this time, the network of the second USIM does not need to page the second USIM again, thereby improving multi- Efficiency of paging USIM and network resource utilization in the scenario where USIM and MOCN are combined.

Optionally, the establishing the first control plane connection between the first USIM and the access network device, and the second control plane connection between the second USIM and the access network device includes:

sending a first radio resource control RRC message to the access network device, where the first RRC message is used to request establishment of the first control plane connection, and the first RRC message includes a first NAS request message, a second NAS A request message, a first routing identifier and a second routing identifier, the first NAS request message includes the identifier of the first USIM, the second NAS request message includes the identifier of the second USIM, and the first NAS The request message is used to establish a communication connection between the first USIM and the first access and mobility management function AMF network element, the first AMF network element is an AMF network element serving the first USIM, and the second The NAS request message is used to establish a communication connection between the second USIM and a second AMF network element, the second AMF network element is an AMF network element serving the second USIM, and the first routing identifier includes the following items or multiple items: the identifier of the first USIM, the identifier of the first network, the identifier of the first AMF network element, the identifier of the first USIM is used to indicate the first AMF network element or the first network, the first USIM belongs to the first network; the second routing identifier includes one or more of the following: the identifier of the second USIM, the identifier of the second network, the identifier of the second AMF network element an identifier, where the identifier of the second USIM is used to indicate the second AMF network element or the second network, and the second USIM belongs to the second network;

Receive a second RRC message from the access network device, the second RRC message includes a response message to the first NAS request message and a response message to the second NAS request message, and the second RRC message uses Indicating that the first control plane connection is established successfully.

It can be seen that in the above technical solution, the terminal device sends a first RRC message to the access network device, and the first RRC message includes a first NAS request message, a second NAS request message, a first route identifier and a second route identifier, so that The access network device can respectively establish corresponding N2 connections for the first USIM and the second USIM, so that when the first USIM is paged, the connection between the paged first USIM and the non-paged second USIM can be established. Communication connection between core network devices. At the same time, the terminal device may receive from the access network device an RRC message indicating that the first control plane connection is successfully established, that is, when the first USIM is paged, the first USIM that is paged and the first USIM that is not paged The second USIM establishes a communication connection with the access network device. At this time, the network of the second USIM does not need to page the second USIM again, thereby improving the efficiency of paging USIM and the utilization rate of network resources in a scenario where multiple USIMs and MOCNs are combined.

sending a third RRC message to the access network device, where the third RRC message is used to request establishment of the first control plane connection, where the third RRC message includes the first NAS request message, the first routing identifier, and the first Two route identification, the first NAS request message includes the identification of the first USIM, the first NAS request message is used for the first USIM to establish a communication connection with the first AMF network element, the first The AMF network element is an AMF network element serving the first USIM; the first routing identifier includes one or more of the following: the identifier of the first USIM, the identifier of the first network, the first AMF network The identity of the element, the identity of the first USIM is used to indicate the first AMF network element or the first network, the first USIM belongs to the first network; the second routing identity includes the following items or multiple items: the identifier of the second USIM, the identifier of the second network, the identifier of the second AMF network element, the identifier of the second USIM is used to indicate the second AMF network element or the second a network, the second USIM belongs to the second network;

Receive a fourth RRC message from the access network device, where the fourth RRC message includes a response message to the first NAS request message, and the fourth RRC message is used to indicate that the first control plane connection is established successfully.

Wherein, the third RRC message may be, for example, an uplink information transfer (UL information transfer) or an RRC establishment request message, which is not limited here.

Wherein, the fourth RRC message may be, for example, a downlink information transfer (DL information transfer) or an RRC establishment completion message, which is not limited here. In a possible implementation manner, the fourth RRC message may be a response message of the third RRC message, which is not limited here.

It can be seen that in the above technical solution, the terminal device sends a third RRC message to the access network device, and the third RRC message includes the first NAS request message, the first route identifier and the second route identifier, so that the access network device can be The first USIM and the second USIM respectively establish their corresponding N2 connections, so that when the first USIM is paged, the first USIM that is paged and the second USIM that is not paged are established with the core network equipment. communication connection. At the same time, the terminal device may receive from the access network device an RRC message indicating that the first control plane connection is successfully established, that is, when the first USIM is paged, the first USIM that is paged and the first USIM that is not paged The second USIM establishes a communication connection with the access network device. At this time, the network of the second USIM does not need to page the second USIM again, thereby improving the efficiency of paging USIM and the utilization rate of network resources in a scenario where multiple USIMs and MOCNs are combined.

In a second aspect, a paging method is provided, the method is applied to a terminal device, the terminal device includes a first USIM and a second USIM, and the method includes:

receiving a first message from an access network device, where the first message includes the identifier of the second USIM, and the first message is used to indicate that the USIM indicated by the identifier of the second USIM is paged;

Send a second NAS request message and a second routing identifier to the access network device through the first control plane connection between the first USIM and the access network device; the second NAS request message includes the second The identifier of the USIM, the second NAS request message is used for the second USIM to establish a communication connection with a second AMF network element, and the second AMF network element is an AMF network element serving the second USIM; The second routing identifier includes one or more of the following: the identifier of the second USIM, the identifier of the second network, and the identifier of the second AMF network element, and the identifier of the second USIM is used to indicate that the second An AMF network element or the second network, where the second USIM belongs to the second network.

It can be seen that in the above technical solution, the access network device may send a message to the terminal device to page the identity of the second USIM, so that the terminal device connects to the access network through the first USIM and the first control plane of the access network device. The device sends the second NAS request message and the second routing identifier, so that the second NAS can be sent to the access network device through the existing communication connection between the first USIM and the access network device when paging the second USIM The request message and the second route identifier are used to establish a communication connection with the second AMF. At this time, the terminal device does not need to establish a control plane connection with the access network device for the second USIM, thereby improving the efficiency of paging USIMs and network resource utilization in a scenario where multiple USIMs and MOCNs are combined.

Optionally, the first message is a fifth RRC message, and the fifth RRC message further includes first indication information, and the first indication information is used to indicate that the USIM indicated by the identifier of the second USIM is sought. call.

Optionally, the method also includes:

sending a sixth RRC message to the access network device, where the sixth RRC message is used to request establishment of the first control plane connection, where the sixth RRC message includes a first NAS request message, a first routing identifier, and the following One or more items: the identifier of the second USIM, the identifier of the second network, the second USIM belongs to the second network, and the first NAS request message is used for the first USIM and the second USIM An AMF network element establishes a communication connection, the first AMF network element is an AMF network element serving the first USIM; the first routing identifier includes one or more of the following: the identifier of the first USIM, An identifier of the first network, where the identifier of the first USIM is used to indicate the first AMF network element or the first network, and the first USIM belongs to the first network;

Receive a seventh RRC message from the access network device, where the seventh RRC message includes a response message to the first NAS request message, and the seventh RRC message is used to indicate that the first control plane connection is established successfully.

It can be seen that in the above technical solution, the terminal device sends a sixth RRC message to the access network device, and the sixth RRC message includes the first NAS request message, the first route identifier and one or more of the following: the identifier of the second USIM , the identifier of the second network, so that the access network device can send the first NAS request message to the first AMF network element according to the first routing identifier, so that the communication connection between the first USIM and the core network device can be established. At the same time, the access network device may also establish a control plane connection with the first USIM according to the sixth RRC message.

Optionally, the method also includes:

receiving a network identifier from the access network device, where the network identifier is used to identify one or more networks supported by the access network device;

In the case that the first USIM and the second USIM belong to the one or more networks, sending the identity of the second USIM to the first AMF network element and sending the identity of the second USIM to the second AMF network element An identifier of the first USIM; the first AMF network element is an AMF network element serving the first USIM, the first USIM belongs to the first network, and the second USIM belongs to the second network.

It can be seen that in the above technical solution, when the first USIM and the second USIM belong to one or more networks supported by the access network equipment, the terminal device sends the identity of the second USIM to the first AMF network element and sends The second AMF network element sends the identity of the first USIM, so that the first AMF network element obtains the identity of the second USIM, so that the identity of the second USIM can be stored in the second context of the first USIM. Similarly, the second USIM can also be made The AMF network element acquires the identity of the first USIM, so that the identity of the first USIM can be stored in the second context of the second USIM.

Optionally, sending the identity of the second network and/or second indication information to the first AMF network element, where the second indication information is used to indicate the first USIM and the access network device The first control plane connection is the same as the second control plane connection between the second USIM and the access network device;

Sending the identifier of the first network and/or third indication information to the second AMF network element, where the third indication information is used to indicate that the first control plane connection is the same as the second control plane connection.

It can be seen that in the above technical solution, the terminal device sends the identity of the second network and/or the second indication information to the first AMF network element, so that the first AMF network element can save the identity of the second network according to the second indication information And/or the second indication information to the second context of the first USIM. Similarly, the terminal device sends the identity of the first network and/or the third indication information to the second AMF network element, so that the second AMF network element can save the identity of the first network and/or the second indication according to the third indication information information to the second context of the second USIM.

In a third aspect, a paging method is provided, the method is applied to a terminal device, the terminal device includes a first USIM and a second USIM, and the method includes:

Receive a second paging message from the access network device, the second paging message is sent at a paging time, the paging time is determined according to the universal identifier of the terminal device, the second paging message includes the An identifier of the first USIM and an identifier of the second USIM, and the second paging message is used to indicate that the USIM indicated by the identifier of the first USIM and the identifier of the second USIM is paged;

Establishing a first control plane connection between the first USIM and the access network device, and a second control plane connection between the second USIM and the access network device; wherein, the first control plane connection and The second control plane connections are the same.

It can be seen that in the above technical solution, the access network device can send a paging message for paging two USIMs to the terminal device at the same paging time, so that the terminal device can establish a relationship with the access network device for the paged USIM. Communication connection between. Secondly, when the first USIM and the second USIM are paging at the same time, the UE only needs to listen to the paging message once to know that the first USIM and the second USIM have downlink data and initiate a communication connection establishment to the network. In addition, when the paging times of the first USIM and the second USIM conflict, the terminal device can successfully monitor the paging of the first USIM and the second USIM, which avoids the The paging time conflict causes the paging of the first USIM or the second USIM to be missed, thereby improving the efficiency of paging USIM and the utilization rate of network resources in the scenario where multiple USIMs and MOCNs are combined.

Optionally, the method also includes:

Generate the general identification of the terminal equipment, and send the general identification of the terminal equipment to the first AMF network element and the second AMF network element, the first AMF network element is the AMF network element serving the first USIM , the second AMF network element is an AMF network element serving the second USIM; or,

receiving the universal identifier of the terminal device from the first AMF network element, and receiving the universal identifier of the terminal device from the second AMF network element; or,

Receive the universal identifier of the terminal device from the first AMF network element, and send the universal identifier of the terminal device to the second AMF network element, where the universal identifier of the terminal device is the first AMF network element generate; or,

Receive the universal identifier of the terminal device from the second AMF network element, and send the universal identifier of the terminal device to the first AMF network element, where the universal identifier of the terminal device is the second AMF network element generate.

Optionally, the method also includes:

sending fourth indication information to the first AMF network element, where the fourth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is connected with the second USIM and the The second control plane connections of the access network devices are the same.

Optionally, the method also includes:

sending fifth indication information to the second AMF network element, where the fifth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is connected with the second USIM and the The second control plane connections of the access network devices are the same.

In a fourth aspect, a paging method is provided, the method is applied to an access network device, and the method includes:

Receive a third paging message from the first AMF network element, where the third paging message includes the identifier of the first USIM, and the third paging message is used to indicate that the USIM indicated by the identifier of the first USIM is paged Calling, the first AMF network element is an AMF network element serving the first USIM;

sending a first paging message and a network identifier to the terminal device, where the first paging message includes the identifier of the first USIM, and the first paging message is used to indicate the USIM indicated by the identifier of the first USIM is paged, the network identifier is used to identify one or more networks supported by the access network device, the terminal device includes the first USIM and the second USIM, the first USIM and the second USIM the USIM belongs to said one or more networks;

Receive a first RRC message from the terminal device, the first RRC message is used to request establishment of the first control plane connection, and the first RRC message includes a first NAS request message, a second NAS request message, a first a routing identifier and a second routing identifier, the first NAS request message includes the identifier of the first USIM, the second NAS request message includes the identifier of the second USIM, and the first NAS request message is used for the The first USIM establishes a communication connection with the first AMF network element, the second NAS request message is used for the second USIM to establish a communication connection with the second AMF network element, and the second AMF network element serves The AMF network element of the second USIM, the first routing identifier includes one or more of the following: the identifier of the first USIM, the identifier of the first network, the identifier of the first AMF network element, the The identifier of the first USIM is used to indicate the first AMF network element or the first network, and the first USIM belongs to the first network; the second routing identifier includes one or more of the following: the The identifier of the second USIM, the identifier of the second network, and the identifier of the second AMF network element, where the identifier of the second USIM is used to indicate the second AMF network element or the second network, and the second the USIM belongs to said second network;

sending the first NAS request message to the first AMF network element according to the first route identifier;

sending the second NAS request message to the second AMF network element according to the second route identifier;

receiving a response message to the first NAS request message from the first AMF network element;

receiving a response message to the second NAS request message from the second AMF network element;

sending a second RRC message to the terminal device, where the second RRC message includes a response message to the first NAS request message and a response message to the second NAS request message, and the second RRC message is used to indicate that the The first control plane connection is established successfully.

It can be seen that in the above technical solution, the terminal device sends a first RRC message to the access network device, and the first RRC message includes a first NAS request message, a second NAS request message, a first route identifier and a second route identifier, so that The access network device may send a first NAS request message to the first AMF network element to establish a communication connection between the first USIM and the first AMF network element, and the access network device may send a second NAS request message to the second AMF network element The request message is to establish a communication connection with the second AMF network element for the second USIM, so that when the first USIM is paged, the first USIM that is paged and the second USIM that is not paged are established with the core Communication connection between network devices. At the same time, the terminal device may receive from the access network device an RRC message indicating that the first control plane connection is successfully established, that is, when the first USIM is paged, the first USIM that is paged and the first USIM that is not paged The second USIM establishes a communication connection with the access network device. At this time, the network of the second USIM does not need to page the second USIM again, thereby improving the efficiency of paging USIM and the utilization rate of network resources in a scenario where multiple USIMs and MOCNs are combined.

Receive a third RRC message from the terminal device, where the third RRC message is used to request establishment of the first control plane connection, where the third RRC message includes a first NAS request message, a first routing identifier, and the following item or multiple items: the identifier of the second USIM, the identifier of the second network, the first NAS request message includes the identifier of the first USIM, and the first NAS request message is used for the first USIM and the first USIM The first AMF network element establishes a communication connection, and the first AMF network element is an AMF network element serving the first USIM; the first routing identifier includes one or more of the following: the first USIM ID, ID of the first network, ID of the first AMF network element, the ID of the first USIM is used to indicate the first AMF network element or the first network, and the first USIM belongs to the The first network; the second routing identifier includes one or more of the following: the identifier of the second USIM, the identifier of the second network, the identifier of the second AMF network element, and the identifier of the second USIM is used Instructing the second AMF network element or the second network, the second USIM belongs to the second network;

Send the second USIM identifier and sixth indication information to the second AMF network element according to the second routing identifier, where the sixth indication information is used to indicate the communication connection established with the second AMF network element The reason is that the first USIM and the second USIM share the same control plane connection;

receiving, from the second AMF network element, a message indicating that the communication connection between the second USIM and the second AMF network element is successfully established;

Sending a fourth RRC message to the terminal device, where the fourth RRC message includes a response message to the first NAS request message, and the fourth RRC message is used to indicate that the first control plane connection is established successfully.

It can be seen that in the above technical solution, the terminal device sends a third RRC message to the access network device, and the third RRC message includes the first NAS request message, the first route identifier and the second route identifier, so that the access network device can send The first AMF network element sends a first NAS request message to establish a communication connection between the first USIM and the first AMF network element, and the access network device may send the second AMF network element the identity of the second USIM and the sixth indication Information, to establish a communication connection with the second AMF network element for the second USIM, so that when the first USIM is paged, the first USIM that is paged and the second USIM that is not paged are established with the core network communication link between devices. At the same time, the terminal device may receive from the access network device an RRC message indicating that the first control plane connection is successfully established, that is, when the first USIM is paged, the first USIM that is paged and the first USIM that is not paged The second USIM establishes a communication connection with the access network device. At this time, the network of the second USIM does not need to page the second USIM again, thereby improving the efficiency of paging USIM and the utilization rate of network resources in a scenario where multiple USIMs and MOCNs are combined.

Optionally, the method also includes:

associating the first context information of the first USIM with the first context information of the second USIM;

Wherein, the first context information of the first USIM includes one or more of the following: the identity of the first USIM, the identity of the first network, and the first context information of the second USIM includes the following one or multiple items: the identifier of the second USIM, the identifier of the second network.

In a fifth aspect, a paging method is provided, the method is applied to an access network device, and the method includes:

Receive the fourth paging message from the second AMF network element, the fourth paging message includes the identity of the second USIM and one or more of the following: the identity of the first USIM, the seventh indication information, the fourth paging message The paging message is used to indicate that the USIM indicated by the identifier of the second USIM is paged, the second AMF network element is an AMF network element serving the second USIM, and the identifier of the first USIM and/or The seventh indication information is used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device;

According to the seventh indication information and/or the identifier of the first USIM, a first message is sent to the terminal device, the first message includes the identifier of the second USIM, and the first message is used to indicate the The USIM indicated by the identity of the second USIM is paged;

Receive a second NAS request message and a second routing identifier from the terminal device; the second NAS request message includes the identifier of the second USIM, and the second NAS request message is used for the second USIM and the second USIM The AMF network element establishes a communication connection; the second routing identifier includes one or more of the following: the identifier of the second USIM, the identifier of the second network, the identifier of the second AMF network element, the second USIM The identifier of is used to indicate the second AMF network element or the second network, and the second USIM belongs to the second network;

sending the second NAS request message to the second AMF network element according to the second route identifier.

It can be seen that in the above technical solution, the access network device may send a message to the terminal device to page the identity of the second USIM, so that the terminal device sends the second NAS request message and the second routing identifier to the access network device, thereby realizing In order to send a second NAS request message and a second routing identifier to the access network device through the existing communication connection between the first USIM and the access network device when paging the second USIM, so as to establish a relationship with the second AMF Communication connection between. At this time, the terminal device does not need to establish a control plane connection with the access network device for the second USIM, thereby improving the efficiency of paging USIMs and network resource utilization in a scenario where multiple USIMs and MOCNs are combined.

Optionally, the receiving the second NAS request message and the second routing identifier from the terminal device includes:

receiving the second NAS request message and the second routing identifier from the terminal device through the first control plane connection between the first USIM and the access network device.

Optionally, the method also includes:

Receive a sixth RRC message from the terminal device, where the sixth RRC message is used to request establishment of the first control plane connection, where the sixth RRC message includes a first NAS request message, a first routing identifier, and the following item or more: the identity of the second USIM, the identity of the second network, the second USIM belongs to the second network, the first NAS request message is used for the first USIM and the first AMF A network element establishes a communication connection, the first AMF network element is an AMF network element serving the first USIM; the first routing identifier includes one or more of the following: the identifier of the first USIM, the first An identifier of a network, where the identifier of the first USIM is used to indicate the first AMF network element or the first network, and the first USIM belongs to the first network;

Send the first NAS request message and one or more of the following to the first AMF network element according to the first route identifier: the identifier of the second USIM, the identifier of the second network;

Sending a seventh RRC message to the terminal device, where the seventh RRC message includes a response message to the first NAS request message, and the seventh RRC message is used to indicate that the first control plane connection is established successfully.

Optionally, the sending the first message to the terminal device according to the seventh indication information and/or the identifier of the first USIM includes:

According to the seventh indication information, determine whether there is first context information of other USIMs associated with the identity of the second USIM, where the other USIMs include the first USIM, or, according to the seventh indication information and Determine whether the first context information of the first USIM exists according to the identifier of the first USIM, or, according to the identifier of the first USIM, determine whether the first context information of the first USIM exists, and the first USIM The first context information of a USIM includes one or more of the following: the identifier of the first USIM, the identifier of the first network;

If so, sending the first message to the terminal device through the first control plane connection, the first message is a fifth RRC message, and the fifth RRC message also includes first indication information, the first The indication information is used to indicate that the USIM indicated by the identity of the second USIM is paged;

If not, send the first message, where the first message is a fifth paging message.

It can be seen that in the above technical solution, the access network device may determine to send an RRC message or a paging message to the terminal device according to the seventh indication information and/or the identifier of the first USIM, so as to notify the terminal device through the RRC message or the paging message The second USIM the device is paged on.

In a sixth aspect, a paging method is provided, the method is applied to an access network device, and the method includes:

Receive a sixth paging message from the first AMF network element, where the sixth paging message includes the identifier of the first USIM and the general identifier of the terminal equipment, and the sixth paging message is used to indicate the identifier of the first USIM The indicated USIM is paged, and the first AMF network element is an AMF network element serving the first USIM;

Receive a seventh paging message from the second AMF network element, where the seventh paging message includes an identifier of the second USIM and a general identifier of the terminal device, and the seventh paging message is used to indicate the second USIM The USIM indicated by the identifier is paged, and the second AMF network element is an AMF network element serving the second USIM;

sending a second paging message to the terminal device, where the second paging message is sent at a paging time, the paging time is determined according to the general identifier of the terminal device, and the second paging message includes the first An identifier of the USIM and an identifier of the second USIM, the second paging message is used to indicate that the USIM indicated by the identifier of the first USIM and the identifier of the second USIM is paged;

It can be seen that in the above technical solution, the access network device can send a paging message for paging two USIMs to the terminal device at the same paging time, so that the terminal device can establish a relationship with the access network device for the paged USIM. Communication connection between. Secondly, when the first USIM and the second USIM are paging at the same time, the UE only needs to listen to the paging message once to know that the first USIM and the second USIM have downlink data and initiate a communication connection establishment to the network. In addition, when the paging times of the first USIM and the second USIM conflict, the terminal device can successfully monitor the paging of the first USIM and the second USIM, which avoids The paging time conflict causes the paging of the first USIM or the second USIM to be missed, thereby improving the efficiency of paging USIM and the utilization rate of network resources in the scenario where multiple USIMs and MOCNs are combined.

Receive an eighth RRC message from the terminal device, the eighth RRC message is used to request establishment of the first control plane connection, and the eighth RRC message includes a first NAS request message, a second NAS request message, a first a routing identifier and a second routing identifier, the first NAS request message includes the identifier of the first USIM, the second NAS request message includes the identifier of the second USIM, and the first NAS request message is used for the The first USIM establishes a communication connection with the first AMF network element, the second NAS request message is used for the second USIM to establish a communication connection with the second AMF network element, and the second AMF network element serves The AMF network element of the second USIM, the first routing identifier includes one or more of the following: the identifier of the first USIM, the identifier of the first network, the identifier of the first AMF network element, the The identifier of the first USIM is used to indicate the first AMF network element or the first network, and the first USIM belongs to the first network; the second routing identifier includes one or more of the following: the The identifier of the second USIM, the identifier of the second network, and the identifier of the second AMF network element, where the identifier of the second USIM is used to indicate the second AMF network element or the second network, and the second the USIM belongs to said second network;

sending a ninth RRC message to the terminal device, where the ninth RRC message includes a response message to the first NAS request message and a response message to the second NAS request message, and the ninth RRC message is used to indicate that the The first control plane connection is established successfully.

It can be seen that in the above technical solution, the terminal device sends the eighth RRC message to the access network device, and the eighth RRC message includes the first NAS request message, the second NAS request message, the first route identifier and the second route identifier, so that The access network device may send the first NAS request message to the first AMF network element according to the first route identifier, so that a communication connection between the first USIM and the core network device may be established. At the same time, the access network device may also send a second NAS request message to the second AMF network element according to the second route identifier, so that a communication connection between the second USIM and the core network device may be established. In addition, the access network device may also establish a control plane connection with the first USIM according to the eighth RRC message.

Optionally, the method also includes:

The sixth paging message further includes eighth indication information, where the eighth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is connected with the second USIM and the The second control plane connection of the access network device is the same;

The seventh paging message further includes ninth indication information, where the ninth indication information is used to indicate that the first control plane connection is the same as the second control plane connection;

The sending the second paging message to the terminal device includes:

If it is determined according to the eighth indication that there is no first context information of other USIMs associated with the identity of the first USIM, and it is determined according to the ninth indication that there is no context information associated with the identity of the second USIM other USIM first context information, then send the second paging message to the terminal device.

Optionally, the sixth paging message further includes the identifier of the second USIM, and the seventh paging message further includes the identifier of the first USIM;

The sending the second paging message to the terminal device includes:

If it is determined according to the eighth indication information and the identity of the second USIM that there is no first context information of the second USIM associated with the identity of the first USIM, and according to the ninth indication information and the identity of the second USIM, If the identity of the first USIM determines that there is no first context information of the first USIM associated with the identity of the second USIM, then the second paging message is sent to the terminal device.

In a seventh aspect, a paging method is provided, the method is applied to a second AMF network element, and the method includes:

Sending a fourth paging message to the access network device, where the fourth paging message includes the identity of the second USIM and one or more of the following: the identity of the first USIM, seventh indication information, the fourth paging message The message is used to indicate that the USIM indicated by the identity of the second USIM is paged, and the identity of the first USIM and/or the seventh indication information are used to indicate that the first USIM and the access network device The first control plane connection is the same as the second control plane connection between the second USIM and the access network device, and the second AMF network element is an AMF network element serving the second USIM;

Receive a second NAS request message from the access network device, the second NAS request message includes the identifier of the second USIM, and the second NAS request message is used for the second USIM and the second AMF network element Establish a communication connection.

It can be seen that, in the above technical solution, the second AMF network element sends the fourth paging message to the access network device, so that the access network device can learn that the second USIM is paged, so that the second AMF network element can send the fourth paging message from the access network device. The network access device acquires the second NAS request message, so that when the second USIM is paged, a communication connection with the access network device can be established for the second USIM.

Optionally, the method also includes:

Receive the identification of the first USIM and/or third indication information from the terminal device, where the identification of the first USIM and/or third indication information are used to indicate the first USIM and the access network device The first control plane connection is the same as the second control plane connection between the second USIM and the access network device.

Optionally, the method also includes:

receiving from the terminal device an identity of a first network to which the first USIM belongs;

sending the identifier of the first network to the access network device, where the identifier of the first network is included in the fourth paging message.

In an eighth aspect, a terminal device is provided, the terminal device includes a first USIM and a second USIM, the terminal device includes a transceiver module and a processing module,

The transceiver module is configured to receive a first paging message and a network identifier from an access network device, the first paging message includes an identifier of a first USIM, and the first paging message is used to indicate that the first USIM The USIM indicated by the USIM identifier is paged, and the network identifier is used to identify one or more networks supported by the access network device;

The processing module is configured to establish a first control plane connection between the first USIM and the access network device when the first USIM and the second USIM belong to the one or more networks , and a second control plane connection between the second USIM and the access network device; wherein, the first control plane connection is the same as the second control plane connection.

Optionally, when establishing the first control plane connection between the first USIM and the access network device and the second control plane connection between the second USIM and the access network device, the transceiver module , for

sending a first RRC message to the access network device, where the first RRC message is used to request establishment of the first control plane connection, and the first RRC message includes a first NAS request message, a second NAS request message, A first routing identifier and a second routing identifier, the first NAS request message includes the identifier of the first USIM, the second NAS request message includes the identifier of the second USIM, and the first NAS request message uses Establishing a communication connection between the first USIM and a first access and mobility management function AMF network element, the first AMF network element is an AMF network element serving the first USIM, and the second NAS request message It is used for the second USIM to establish a communication connection with a second AMF network element, the second AMF network element is an AMF network element serving the second USIM, and the first routing identifier includes one or more of the following : the identifier of the first USIM, the identifier of the first network, and the identifier of the first AMF network element, where the identifier of the first USIM is used to indicate the first AMF network element or the first network, so The first USIM belongs to the first network; the second routing identifier includes one or more of the following: the identifier of the second USIM, the identifier of the second network, the identifier of the second AMF network element, the The identifier of the second USIM is used to indicate the second AMF network element or the second network, and the second USIM belongs to the second network;

Optionally, the terminal device includes a first USIM and a second USIM, the terminal device includes a transceiver module, and the transceiver module is used for

Optionally, the transceiver module is also used for

sending the identity of the second network and/or second indication information to the first AMF network element, where the second indication information is used to indicate the first USIM and the first control plane of the access network device The connection is the same as the second control plane connection between the second USIM and the access network device;

In a ninth aspect, a terminal device is provided, where the terminal device includes a first USIM and a second USIM, and the terminal device includes a transceiver module and a processing module,

The transceiver module is configured to receive a second paging message from an access network device, the second paging message is sent at a paging time, the paging time is determined according to the general identifier of the terminal device, and the second paging message is sent at a paging time. The second paging message includes the identity of the first USIM and the identity of the second USIM, and the second paging message is used to indicate the USIM indicated by the identity of the first USIM and the identity of the second USIM be paged;

The processing module is configured to establish a first control plane connection between the first USIM and the access network device, and a second control plane connection between the second USIM and the access network device; wherein the The first control plane connection is the same as the second control plane connection.

Optionally, the processing module is further configured to generate a universal identifier of the terminal device, and the transceiver module is further configured to send the universal identifier of the terminal device to the first AMF network element and the second AMF network element, The first AMF network element is an AMF network element serving the first USIM, and the second AMF network element is an AMF network element serving the second USIM; or,

The transceiver module is further configured to receive the general identifier of the terminal device from the first AMF network element, and receive the general identifier of the terminal device from the second AMF network element; or,

The transceiver module is further configured to receive the general identification of the terminal equipment from the first AMF network element, and send the general identification of the terminal equipment to the second AMF network element, the general identification of the terminal equipment generated for the first AMF network element; or,

The transceiver module is further configured to receive the general identification of the terminal equipment from the second AMF network element, and send the general identification of the terminal equipment to the first AMF network element, the general identification of the terminal equipment Generated for the second AMF network element.

Optionally, the transceiver module is further configured to send fourth indication information to the first AMF network element, where the fourth indication information is used to indicate the first USIM and the first USIM of the access network device. The control plane connection is the same as the second control plane connection between the second USIM and the access network device.

Optionally, the transceiver module is further configured to send fifth indication information to the second AMF network element, where the fifth indication information is used to indicate the first USIM and the first USIM of the access network device. The control plane connection is the same as the second control plane connection between the second USIM and the access network device.

In a tenth aspect, an access network device is provided, where the access network device includes a transceiver module and a processing module,

The transceiver module is configured to receive a third paging message from the first AMF network element, the third paging message includes the identifier of the first USIM, and the third paging message is used to indicate the identity of the first USIM The indicated USIM is paged, and the first AMF network element is an AMF network element serving the first USIM;

The transceiver module is configured to send a first paging message and a network identifier to the terminal device, the first paging message includes the identifier of the first USIM, and the first paging message is used to indicate that the first USIM The USIM indicated by the USIM identifier is paged, the network identifier is used to identify one or more networks supported by the access network device, the terminal device includes the first USIM and the second USIM, the second USIM a USIM and said second USIM belong to said one or more networks;

Optionally, the processing module is further configured to associate and store the first context information of the first USIM and the first context information of the second USIM;

In an eleventh aspect, an access network device is provided, the access network device includes a transceiver module, and the transceiver module is configured to

Optionally, when receiving a second NAS request message and a second routing identifier from the terminal device, the transceiver module is configured to connect the first USIM with the first control plane of the access network device from The terminal device receives the second NAS request message and the second routing identifier.

Optionally, the transceiver module is also used for

Optionally, when sending the first message to the terminal device according to the seventh indication information and/or the identifier of the first USIM,

The processing module is configured to determine, according to the seventh indication information, whether there is first context information of other USIMs associated with the identifier of the second USIM, where the other USIMs include the first USIM, or, according to The seventh indication information and the identifier of the first USIM determine whether the first context information of the first USIM exists, or, according to the identifier of the first USIM, determine whether the first context information of the first USIM exists Context information, the first context information of the first USIM includes one or more of the following: an identifier of the first USIM, an identifier of the first network;

The transceiver module is configured to, if yes, send the first message to the terminal device through the first control plane connection, the first message is a fifth RRC message, and the fifth RRC message also includes a fifth RRC message. an indication information, where the first indication information is used to indicate that the USIM indicated by the second USIM identifier is paged;

The transceiver module is configured to send the first message if not, and the first message is a fifth paging message.

In a twelfth aspect, an access network device is provided, where the access network device includes a transceiver module and a processing module,

The transceiver module is configured to receive a sixth paging message from the first AMF network element, the sixth paging message includes the identifier of the first USIM and the general identifier of the terminal equipment, and the sixth paging message is used to indicate The USIM indicated by the identifier of the first USIM is paged, and the first AMF network element is an AMF network element serving the first USIM;

The transceiver module is configured to receive a seventh paging message from the second AMF network element, the seventh paging message includes the identifier of the second USIM and the general identifier of the terminal equipment, and the seventh paging message uses When the USIM indicated by the identifier indicating the second USIM is paged, the second AMF network element is an AMF network element serving the second USIM;

The transceiver module is configured to send a second paging message to the terminal device, the second paging message is sent at a paging time, the paging time is determined according to the general identifier of the terminal device, and the second paging message is sent at a paging time. The paging message includes the identifier of the first USIM and the identifier of the second USIM, and the second paging message is used to indicate that the USIM indicated by the identifier of the first USIM and the identifier of the second USIM is paged call;

Optionally, the sixth paging message further includes eighth indication information, and the eighth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is connected to the second The connection between the USIM and the second control plane of the access network device is the same;

When sending the second paging message to the terminal device, the transceiver module is configured to

In a thirteenth aspect, a second AMF network element is provided, the second AMF network element includes a transceiver module, and the transceiver module is used for

Optionally, the transceiver module is further configured to receive the first USIM identifier and/or third indication information from the terminal device, and the third indication information is used to indicate the first USIM and the The first control plane connection of the access network device is the same as the second control plane connection between the second USIM and the access network device.

Optionally, the transceiver module is also used for

In a fourteenth aspect, a communication device is provided, including a processor, a memory, an input interface, and an output interface, the input interface is used to receive information from other communication devices other than the communication device, and the output interface is used for Outputting information to other communication devices other than the communication device, the processor invokes a computer program stored in the memory to implement the first aspect, the second aspect, the third aspect, the fourth aspect, the fifth aspect, the first aspect The method described in any one of the sixth aspect or the seventh aspect.

In a possible design, the communication device may be a chip or a device including a chip that implements the method in the first aspect, the second aspect, the third aspect, the fourth aspect, the fifth aspect, the sixth aspect or the seventh aspect .

In a fifteenth aspect, a computer-readable storage medium is provided, and a computer program is stored in the computer-readable storage medium. When the computer program is executed, the first aspect, the second aspect, the third aspect, and The method according to any one of the fourth aspect, the fifth aspect, the sixth aspect or the seventh aspect.

In a sixteenth aspect, a communication system is provided, including one or more of the following: the above-mentioned terminal device, the above-mentioned access network device, and the above-mentioned second AMF network element.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

in:

FIG. 1A is a schematic diagram of Tx/Rx capabilities of a terminal device;

FIG. 1B is a schematic diagram of network co-construction and sharing;

Figure 1C is a schematic diagram of a technology-driven scenario;

Fig. 2 is the infrastructure of the communication system provided by the embodiment of the present application;

FIG. 3 is a schematic diagram of a specific possible network architecture applicable to the embodiment of the present application;

FIG. 4 is a schematic diagram of a hardware structure applicable to a communication device provided by an embodiment of the present application;

FIG. 5 is a schematic flowchart of a paging method provided in an embodiment of the present application;

Figure 6 is a schematic diagram of two USIMs entering CM-IDLE or CM-CONNECTED synchronously;

FIG. 7 is a schematic flowchart of another paging method provided in the embodiment of the present application;

FIG. 8 is a schematic flowchart of another paging method provided in the embodiment of the present application;

FIG. 9 is a schematic flowchart of another paging method provided by the embodiment of the present application;

FIG. 10 is a schematic flowchart of another paging method provided in the embodiment of the present application;

FIG. 11 is a schematic flowchart of another paging method provided in the embodiment of the present application;

FIG. 12 is a schematic flowchart of another paging method provided by the embodiment of the present application;

FIG. 13 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 14 is a schematic structural diagram of a simplified terminal device provided by an embodiment of the present application;

FIG. 15 is a schematic structural diagram of a simplified access network device provided by an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

It should be understood that "at least one" means one or more, and "plurality" means two or more. "And/or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the contextual objects are an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of a single item or a plurality of items. For example, at least one (piece) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single or multiple . The singular expressions "a", "an", "the", "above", "the" and "this" are intended to also include expressions such as "one or more" unless the context clearly indicates There are instructions to the contrary. And, unless otherwise stated, the ordinal numerals such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, timing, priority or priority of multiple objects. Importance.

References to "one embodiment" or "some embodiments" and the like described in the embodiments of the present application mean that specific features, structures or characteristics described in connection with the embodiments are included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in other embodiments," etc. in various places in this specification are not necessarily All refer to the same embodiment, but mean "one or more but not all embodiments" unless specifically stated otherwise. The terms "including", "comprising", "having" and variations thereof mean "including but not limited to", unless specifically stated otherwise.

The nouns (or communication terms) involved in this application are explained below.

1. Universal Subscriber Identification Module (USIM)

It can be understood that the USIM may include USIMs in various forms, for example, a pluggable USIM card, an embedded USIM (Embedded-USIM, eUSIM), or an eUICC (Embedded-UICC), which is not limited here.

Among them, the USIM can support global system for mobile communications associations (GSMA), remote SIM provisioning (remote SIM provisioning, RSP) communication protocols, etc., and there is no limitation here.

2. RRC idle state (RRC_IDLE)

When the USIM is in the RRC idle state, the terminal device does not establish an RRC connection between the USIM and the access network device, and does not save the corresponding radio resource control context (RRC context). The RRC context is a communication parameter acquired by the terminal device when establishing an RRC connection between the USIM and the access network device. The RRC context may include one or more of the following information: access stratum (Access stratum, AS) security context, terminal device radio capability information, signaling radio bearer (signaling radio bearer, SRB) configuration information, data radio bearer (data radio bearer, DRB) configuration information, etc. At the same time, the USIM has not established a communication connection with the core network equipment, that is, the core network equipment is in the connection management idle state (Connection Management-Idle, CM-IDLE). In this state, the terminal device cannot transmit or receive data, which may include user plane service data and control plane signaling. When the terminal device needs to send uplink data to the network, or receives a paging message from the network, or receives a downlink service notification message from the network, it requests to access the network to establish a communication connection to send or receive data.

3. RRC connected state (RRC_CONNECTED)

When the USIM is in the RRC connection state, the terminal device has established an RRC connection between the USIM and the access network device, and generated and saved the corresponding RRC context. The access network device assigns a cell radio network temporary identifier (C-RNTI) to the accessed USIM. At the same time, the USIM has also established a communication connection with the core network equipment, that is, the core network equipment is in the connection management connection state (Connection Management, CM_CONNECTED). At this point, the terminal device can transmit and receive data, which may include user plane service data and control plane signaling.

The above content briefly expounds the meanings of the nouns (communication terms) involved in the embodiments of the present application. In order to better understand the technical solutions provided by the embodiments of the present application, it does not constitute a limitation to the technical solutions provided by the embodiments of the present application.

In the following, in order to facilitate understanding of the present application, relevant technical knowledge involved in the embodiments of the present application is introduced here.

At present, network co-construction and sharing and multiple USIM (MUSIM) have become the development trend of the fifth generation mobile communication technology (5th generation mobile networks, 5G). In order to efficiently realize 5G network coverage, quickly form 5G service capabilities, enhance the market competitiveness of 5G networks and services, improve network efficiency and asset operation efficiency, and achieve mutual benefit and win-win results for both parties. Different operators have carried out a cooperative mode of network co-construction and sharing. That is to jointly build a 5G access network. The joint construction and sharing of the 5G network adopts the access network multi-operator core network (MOCN) sharing method, the core network is built separately, and the 5G base stations and frequency resources are shared. For example, a typical case: China Telecom and China Unicom share 3.4G-3.6G, China Mobile and Radio and Television share 700M. Another example is the cooperation method of network co-construction and sharing between the public network and the private network. The public network operator deploys shared base stations for the private network, and the core network is built separately, and 5G base stations and frequency resources are shared.

Specifically, refer to FIG. 1B , which is a schematic diagram of network co-construction and sharing. Combining with Figure 1B, it can be seen that the same base station can communicate with the core networks of different operators. ) core network communication. In addition, different terminal devices can respectively communicate with the same base station in the shared cell. For example, terminal device A and terminal device B in FIG. 1B can respectively communicate with the same base station in the shared cell, where the shared cell includes public land mobile (Communication) network (public land mobile network, PLMN) A and PLMN B, terminal device A can access PLMN A, terminal device B can access PLMN B. In the case of such network co-construction and sharing, the shared base station also needs to maintain an independent communication connection for each USIM.

Secondly, combined with the current technological development trend, network co-construction and sharing is the current development trend. For example, refer to FIG. 1C , which is a schematic diagram of a technology-driven scenario. 1C, it can be seen that different USIMs of the same terminal device can access the same base station or different base stations, and different USIMs of the same terminal device can access different core networks. Specifically, as shown in Figure 1C, in the case of non-network co-construction and sharing, terminal equipment UE1 can access the radio access network RAN1, UE2 can access RAN1 and RAN2, RAN1 can access the core network CN1, and RAN2 can access the In the case of network co-construction and sharing, different USIMs of the same terminal device can access the same base station or different base stations, and different USIMs of the same terminal device can access their respective core networks; further, different USIMs of the same terminal device USIM can access respective access and mobility management function (access and mobility management function, AMF) network element, user plane function (user plane function, UPF), session management function (session management function, SMF), etc., here No restrictions. It should be noted that in this application, the UPF network element is used as the anchor point of the protocol data unit (protocol data unit, PDU) session connection, and is responsible for data packet filtering, data transmission/forwarding, rate control, and billing generation of the user equipment. information etc. The SMF network element is mainly responsible for all control plane functions of session management, including UPF selection, IP address allocation, session quality of service (QoS) management, (from the policy control function (policy control function, PCF) network element) Policy and charging control (policy and charging control, PCC), etc. The PCF network element provides configuration policy information for terminal equipment, and provides policy information for controlling terminal equipment for network control plane network elements (such as AMF network elements and SMF network elements).

In summary, combined with Figure 1B-1C, it can be seen that network co-construction and sharing is the current technological development trend. However, in the scenario where multiple USIMs and MOCNs are combined, the current technology still needs to paging and establish a communication connection for each USIM separately, and there may be paging time conflicts between multiple different USIMs, resulting in paging efficiency. and network resource utilization are low. That is, how to improve the efficiency of paging USIM and the utilization rate of network resources in the scenario where multiple USIMs and MOCNs are combined has become an urgent technical problem to be solved at the current stage.

Based on this, the present application provides a paging method to solve the above technical problem, and the following describes the embodiments of the present application in detail.

It should be understood that the technical solutions of the embodiments of the present application may be applied to fifth generation mobile communication technologies (5th generation mobile networks, 5G) and the like. The technical solutions of the embodiments of the present application can also be applied to other communication systems in the future, such as 6G communication systems, etc. In the future communication systems, the functions may remain the same, but the names may be changed.

The basic structure of the communication system provided by the embodiment of the present application is introduced below. Referring to FIG. 2 , FIG. 2 is a basic architecture of a communication system provided by an embodiment of the present application. As shown in FIG. 2 , the communication system may include one or more access network devices 10 (only one is shown) and one or more terminal devices 20 communicating with each access network device 10 . FIG. 2 is only a schematic diagram, and does not constitute a limitation on the applicable scenarios of the technical solution provided in this application.

Wherein, the access network device 10 is an entity on the network side for sending a signal, or receiving a signal, or sending a signal and receiving a signal. The access network device 10 may be a device deployed in a radio access network (radio access network, RAN) to provide a wireless communication function for the terminal device 20, for example, it may be a transmission reception point (transmission reception point, TRP), a base station, various The control node of the form. For example, a network controller, a wireless controller, a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario, and the like. Specifically, the access network equipment may be various forms of macro base stations, micro base stations (also called small cells), relay stations, access points (access point, AP), radio network controllers (radio network controller, RNC), Node B (node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved nodeB, or home node B, HNB), baseband unit (baseBand unit, BBU), transmission point (transmitting and receiving point, TRP), transmission point (transmitting point, TP), mobile switching center), etc., can also be the antenna panel of the base station. The control node can connect multiple base stations, and configure resources for multiple terminals under the coverage of multiple base stations. In systems adopting different radio access technologies, the names of the equipment with base station functions may be different. For example, it may be a gNB in 5G, or a network-side device in a post-5G network, or an access network device in a future evolved PLMN network. This application does not limit the specific name of the access network device. In addition, the access network device 10 may also include a central unit (central unit, CU) and a distributed unit (distributed unit, DU) integrated on the gNB.

Wherein, the terminal device 20 is an entity on the user side for receiving signals, or sending signals, or receiving signals and sending signals. The terminal device 20 is used to provide users with one or more of voice services and data connectivity services. The terminal device 20 may be a device that includes a wireless transceiver function and can cooperate with access network devices to provide communication services for users. Specifically, the terminal equipment 20 may refer to a user equipment (user equipment, UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a terminal, a wireless communication device, a user agent or user device. The terminal device 20 may also be a drone, an Internet of Things (Internet of Things, IoT) device, a station (station, ST) in a WLAN, a cellular phone (cellular phone), a smart phone (smart phone), a cordless phone, a wireless data Cards, tablet computers, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistant (PDA) devices, laptop computers ), machine type communication (machine type communication, MTC) terminals, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices (also known as wearable smart devices) , virtual reality (virtual reality, VR) terminal, augmented reality (augmented reality, AR) terminal, wireless terminal in industrial control (industrial control), wireless terminal in self driving (self driving), remote medical (remote medical) Wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home, etc. The terminal device 20 may also be a device to device (device to device, D2D) device, for example, an electric meter, a water meter, and the like. The terminal device 20 may also be a terminal in a 5G system, or a terminal in a next-generation communication system, which is not limited in this embodiment of the present application. In the embodiment of the present application, the terminal device 20 may include one or more USIMs.

Referring to FIG. 2 , the communication system may further include a first access and mobility management function (access and mobility management function, AMF) network element 30 and a second AMF network element 40. The first AMF network element 30 is an AMF network element serving the first USIM, and the second AMF network element 40 is an AMF network element serving the second USIM. The first AMF network element 30 and the second AMF network element 40 can communicate with the access network device 10 and the terminal device 20 . It can be understood that the first AMF network element 30 and the second AMF network element 40 may communicate with the terminal device 20 directly, or communicate with the terminal device 20 through the access network device 10, which is not limited here.

Wherein, the first AMF network element 30 and the second AMF network element 40 have the following one or more functions: registration, security authentication and key agreement for terminal equipment in the mobile network, non-access stratum (Non-Access Stratum, NAS) connection maintenance, mobility management, routing signaling between terminal equipment and other network elements. For example, routing a session management (session management, SM) message between a terminal device and a session management function (SMF). In 5G communication, Namf is a service-based interface provided by the first AMF network element 30 and the second AMF network element 40, and the first AMF network element 30 and the second AMF network element 40 can communicate with other network functions through Namf. It can be understood that the present application does not limit the names of the first AMF network element 30 and the second AMF network element 40 .

It should be noted that in this application, the first AMF network element 30 and the second AMF network element 40 may be the same device, or different devices, which is not limited here.

The following takes the 5G communication system as an example, from the perspective of a network communicating with a single USIM, or from the perspective of two USIMs belonging to the same communication network (that is, the first AMF network element 30 and the second AMF network element 40 are the same device, the second AMF network element 40 The first UDM network element 50 and the second UDM network element 60 are the same device), illustrating a schematic diagram of a specific possible network architecture applicable to this embodiment of the present application. Specifically, refer to FIG. 3 , which is a schematic diagram of a specific possible network architecture applicable to this embodiment of the present application. The network structure may include the above-mentioned AMF network element, UDM network element, gNB, terminal equipment and so on. Among them, the N8 interface is the reference point between the AMF network element and the UDM network element, and the N2 interface is the reference point between the gNB and the AMF network element, which is used for non-access stratum (non-access stratum, NAS) messages and next-generation The application protocol (next generation application protocol, NGAP) message is sent, etc., and the gNB and the terminal device communicate through the air interface. Wherein, the air interface may be a communication interface between the network device and the terminal device. For example, in 5G, the air interface is called new radio (NR). In addition, control plane network elements such as AMF network elements and UDM network elements can also use service interfaces to interact. For example, the service interface provided by AMF network elements can be Namf; the service interface provided by UDM network elements can be Nudm .

It can be understood that the above-mentioned network element or function may be a network element in a hardware device, or a software function running on dedicated hardware, or a virtualization function instantiated on a platform (for example, a cloud platform). The above-mentioned network elements or functions can be divided into one or more services, and further, there may also be services that exist independently of network functions. In this application, an instance of the above-mentioned function, or an instance of a service included in the above-mentioned function, or a service instance existing independently of the network function may be referred to as a service instance.

In addition, the technical solutions provided by the embodiments of the present application are applicable to various system architectures. The network architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application. For the evolution of architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

Optionally, each network element in FIG. 2 (such as the access network device 10, the terminal device 20, the first AMF30, the second AMF40, etc.) may be implemented by one device, or jointly implemented by multiple devices, or A functional module in a device is not specifically limited in this embodiment of the present application. It can be understood that the above function can be a network element in a hardware device, a software function running on dedicated hardware, or a virtualization function instantiated on a platform (for example, a cloud platform).

For example, each device in FIG. 2 can be implemented by the communication device 400 in FIG. 4 . FIG. 4 is a schematic diagram of a hardware structure applicable to a communication device provided by an embodiment of the present application. The communication device 400 includes at least one processor 401 , a communication line 402 and at least one communication interface 404 .

The processor 401 can be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, a specific application integrated circuit (application-specific integrated circuit, ASIC), or one or more for controlling the implementation of the application program program integrated circuit.

Communication line 402 may include a pathway for communicating information between the above-described components.

The communication interface 404 is any device such as a transceiver (such as an antenna) for communicating with other devices or communication networks, such as Ethernet, RAN, wireless local area networks (wireless local area networks, WLAN) and the like.

Optionally, the communication device 400 further includes a memory 403, the memory 403 may be a read-only memory (read-only memory, ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory) , RAM) or other types of dynamic storage devices that can store information and instructions, or electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory , CD-ROM) or other optical disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disc storage media or other magnetic storage devices, or capable of carrying or storing Desired program code in the form of a data structure and any other medium capable of being accessed by a computer, but not limited thereto. The memory may exist independently and be connected to the processor through the communication line 402 . Memory can also be integrated with the processor. The memory provided by the embodiment of the present application may generally be non-volatile. Wherein, the memory 403 is used to store computer-executed instructions for implementing the solution of the present application, and the processor 401 controls the execution. The processor 401 is configured to execute computer-executed instructions stored in the memory 403, so as to implement the methods provided in the following embodiments of the present application.

Optionally, the computer-executed instructions in the embodiments of the present application may also be referred to as application program codes, which is not specifically limited in the embodiments of the present application.

In a possible implementation manner, the processor 401 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 4 .

In a possible implementation manner, the communication device 400 may include multiple processors, for example, the processor 401 and the processor 407 in FIG. 4 . Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).

In a possible implementation manner, the communication apparatus 400 may further include an output device 405 and an input device 406 . Output device 405 is in communication with processor 401 and may display information in a variety of ways. For example, the output device 405 may be a liquid crystal display (liquid crystal display, LCD), a light emitting diode (light emitting diode, LED) display device, a cathode ray tube (cathode ray tube, CRT) display device, or a projector (projector) Wait. The input device 406 communicates with the processor 401 and can receive user input in various ways. For example, the input device 406 may be a mouse, a keyboard, a touch screen device, or a sensing device, among others.

The aforementioned communication device 400 may be a general-purpose device or a special-purpose device. In a specific implementation, the communication device 400 can be a desktop computer, a portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, an embedded device, or a similar structure in FIG. 4 equipment. The embodiment of the present application does not limit the type of the communication device 400 .

The technical solutions provided by the embodiments of the present application are described below with reference to the accompanying drawings.

Referring to FIG. 5 , referring to FIG. 5 , FIG. 5 is a schematic flowchart of a paging method provided by an embodiment of the present application. Wherein, the access network device in FIG. 5 is the access network device 10 in FIG. 2, the terminal device in FIG. 5 is the terminal device 20 in FIG. 2, and the first AMF network element in FIG. 5 is the The first AMF network element 30. In the embodiment of the present application, the terminal equipment includes two USIMs as an example for illustration, but it is not limited to two, and may also include three or more USIMs. As shown in Figure 5, the method includes but is not limited to the following steps:

501. The first AMF network element sends a third paging message to the access network device, the third paging message includes the identifier of the first USIM, and the third paging message is used to indicate that the USIM indicated by the identifier of the first USIM is paged Call, the first AMF network element is the AMF network element serving the first USIM.

Correspondingly, the access network device receives the third paging message from the first AMF network element.

Wherein, the identifier of the first USIM includes a first system architecture evolution temporary mobile station identifier (system architecture evolution, SAE, temporary mobile station identifier, S-TMSI), a first globally unique temporary identifier (globally unique temporary identity, GUTI), The first user permanent identifier (subscription permanent identifier, SUPI), or the first access network temporary identifier (Radio Network Temporary Identifier, RNTI), etc., are not limited here.

502. The access network device sends a first paging message and a network identifier to the terminal device, the first paging message includes the identifier of the first USIM, and the first paging message is used to indicate that the USIM indicated by the identifier of the first USIM is paged Calling, the network identifier is used to identify one or more networks supported by the access network device, and the terminal device includes a first USIM and a second USIM.

Correspondingly, the terminal device receives the first paging message and the network identifier from the access network device.

Wherein, the network identifier may be a public land mobile (communication) network (public land mobile network, PLMN) identifier. It can be understood that in this application, the network identifier may be one or more network identifiers, and one network identifier is used to identify a network supported by the access network device.

It should be noted that in this application, a network can be understood as an operator network, that is, a network identifier can be used to identify an operator network supported by an access network device.

Exemplarily, the PLMN ID 1 is used to identify the China Unicom network supported by the access network device, the PLMN ID 2 is used to identify the China Mobile network supported by the access network device, and the PLMN ID 3 is used to identify the network supported by the access network device. China Telecom's network.

Optionally, step 502 can be understood as: the access network device first sends the first paging message to the terminal device, and then the access network device sends the network identifier to the terminal device; or, the access network device first sends the network identifier to the terminal device. ID, the access network device then sends the first paging message to the terminal device; the access network device simultaneously sends the network ID and the first paging message to the terminal device.

Wherein, the access network device sending the network identifier to the terminal device may include: the access network device sending a network list (PLMN list) to the terminal device, and the network list may include one or more network identifiers. The access network device sends the network list to the terminal device, which can be understood as: the access network device sends the network list (PLMN list) to the terminal device through a system information broadcast (SIB) message.

503. When the first USIM and the second USIM belong to one or more networks supported by the access network device, the terminal device establishes the first control plane connection between the first USIM and the access network device, and the second USIM and the access network device. The second control plane connection of the network access device; wherein, the first control plane connection and the second control plane connection are the same.

Wherein, the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device, and may include any of the following three situations:

(1) The RRC layer between the first USIM and the access network device is the same as the RRC layer between the second USIM and the access network device, and the packet data convergence protocol (packet data) between the first USIM and the access network device The convergence protocol (PDCP) layer is the same as the PDCP layer between the second USIM and the access network device, and the radio link control (radio link control, RLC) layer between the first USIM and the access network device is the same as the second USIM and the access network device. The RLC layer between the access network devices is the same, the media access control (media access control, MAC) layer between the first USIM and the access network device is the same as the MAC layer between the second USIM and the access network device, And the physical layer (PHY, Physical) between the first USIM and the access network device is the same as the PHY layer between the second USIM and the access network device;

(2) The RLC layer between the first USIM and the access network device is the same as the RLC layer between the second USIM and the access network device, and the MAC layer between the first USIM and the access network device is the same as that between the second USIM and the access network device The MAC layers between the access network devices are the same, and the PHY between the first USIM and the access network device is the same as the PHY between the second USIM and the access network device;

(3) The MAC layer between the first USIM and the access network device is the same as the MAC layer between the second USIM and the access network device, and the PHY between the first USIM and the access network device is the same as that between the second USIM and the access network device The PHY between the access network devices is the same.

In a possible implementation manner, step 503 includes: the terminal device sends a first RRC message to the access network device, the first RRC message is used to request the establishment of the first control plane connection, and the first RRC message includes the first NAS request message, a second NAS request message, a first route identifier and a second route identifier, the first NAS request message includes the identifier of the first USIM, the second NAS request message includes the identifier of the second USIM, and the first NAS request message is used for the first USIM A USIM establishes a communication connection with the first AMF network element, the second NAS request message is used for the second USIM to establish a communication connection with the second AMF network element, and the first routing identifier includes one or more of the following: the identifier of the first USIM, The identifier of the first network, the identifier of the first AMF network element, the identifier of the first USIM is used to indicate the first AMF network element or the first network, and the first USIM belongs to the first network; the second routing identifier includes one or more of the following Item: the identity of the second USIM, the identity of the second network, the identity of the second AMF network element, the identity of the second USIM is used to indicate the second AMF network element or the second network, the second USIM belongs to the second network; terminal equipment Receive a second RRC message from the access network device, the second RRC message includes a response message to the first NAS request message and a response message to the second NAS request message, and the second RRC message is used to indicate that the first control plane connection is established successfully.

Wherein, the first RRC message may be, for example, an uplink information transfer (UL information transfer) or an RRC establishment request message, which is not limited here.

Wherein, the first network identifier may be the first PLMN identifier. The first PLMN identifier may be used to identify the operator network supported by the access network device.

Wherein, if the first routing identifier is GUTI, the high-order bits of the first routing identifier may include the identifier of the first network or the identifier of the globally unique first AMF network element, and all bits of the first routing identifier may be the globally unique first AMF network element identifier. A USIM identifier, the access network device can route the NAS request message to the first network or the first AMF network element according to the GUTI. For example, the access network device can route the first NAS request message to the first network or the first AMF network element according to the GUTI; if the first routing identifier includes the identifier of the first network and the S-TMSI, the high bit of the first routing identifier The bits may be the identifier of the unique first AMF network element in the first network, and all the bits of the first routing identifier may be the identifier of the unique first USIM in the first network, then the access network device may be based on the identifier of the first network and S-TMSI, route the NAS request message to the first network or the first AMF network element, such as the access network device can route the first NAS request message to the first network or The first AMF network element; if the first routing identifier includes the globally unique first AMF network element identifier, the access network device can route the NAS request message to the first network according to the globally unique first AMF network element identifier Or the first AMF network element, for example, the access network device may route the first NAS request message to the first network or the first AMF network element according to the globally unique identifier of the first AMF network element.

Wherein, the identifier of the second network may be the identifier of the second PLMN. The second PLMN identifier may be used to identify the operator network supported by the access network device.

It should be noted that in this application, the first network and the second network may be the same network or different networks, which is not limited here. Exemplarily, both the first network and the second network may be the network of China Unicom, the network of China Mobile or the network of China Telecom. For another example, the first network may be the network of China Unicom, and the second network may be the network of China Mobile.

Wherein, if the second routing identifier is GUTI, the high-order bits of the second routing identifier may include the identifier of the second network or the globally unique identifier of the second AMF network element, and all bits of the second routing identifier may be the globally unique second AMF network element identifier. With the identifier of the USIM, the access network device can route the NAS request message to the second network or the second AMF network element according to the GUTI. For example, the access network device can route the second NAS request message to the second network or the second AMF network element according to the GUTI; if the second routing identifier includes the identifier of the second network and S-TMSI, the high bit of the second routing identifier The bits may be the identifier of the unique second AMF network element in the second network, and all the bits of the second routing identifier may be the identifier of the unique second USIM in the second network, then the access network device may be based on the identifier of the second network and S-TMSI, route the NAS request message to the second network or the second AMF network element, for example, the access network device may route the second NAS request message to the second network or the second network according to the identity of the second network and the S-TMSI The second AMF network element; if the second routing identifier includes the globally unique identifier of the second AMF network element, the access network device may route the NAS request message to the second network according to the globally unique identifier of the second AMF network element Or the second AMF network element, for example, the access network device may route the second NAS request message to the second network or the second AMF network element according to the globally unique identifier of the second AMF network element.

Wherein, the first NAS request message is used to establish a communication connection between the first USIM and the first AMF network element, which can be understood as: the first NAS request message is used to trigger the N2 of establishing the first USIM between the access network device and the first AMF network element Connection; the second NAS request message is used for the second USIM to establish a communication connection with the second AMF network element, which can be understood as: the second NAS request message is used to trigger the access network device to establish the N2 of the second USIM with the second AMF network element connect.

It should be noted that in this application, the NAS request message may be a registration request message or a service request message, which is not limited here. Wherein, the registration request message or the service request message is used to request to establish a communication connection between the terminal device and the AMF network element, so as to manage and control the terminal device (for example, register USIM or perform mobility management) or transmit data for the terminal device.

Exemplarily, the first NAS request message is used to register the first USIM with the first AMF network element.

Wherein, the second RRC message may be, for example, a downlink information transfer (DL information transfer) or an RRC reconfiguration message or an RRC establishment completion message, which is not limited here. In a possible implementation manner, the second RRC message may be a response message of the first RRC message, which is not limited here.

Wherein, the response message of the first NAS request message is used to indicate that the communication connection between the first USIM and the first AMF network element is successfully established, and the response message of the second NAS request message is used to indicate that the second USIM and the second AMF network element The communication connection between them is successfully established.

It should be noted that in this application, the NAS response message may be a registration acceptance message or a service acceptance message, which is not limited here. Wherein, the registration acceptance message or the service acceptance message is used to indicate that the communication connection between the terminal equipment and the AMF network element has been successfully established, and the registration acceptance message or the service acceptance message can also be used to indicate that the registration to the USIM has been completed. It can be understood that if the NAS request message can be a registration request message, then the NAS response message is a registration acceptance message; if the NAS request message can be a service request message, then the NAS response message is a service acceptance message.

Exemplarily, the first NAS response message is used to indicate that the first AMF network element has completed the registration of the first USIM.

The principle that the above-mentioned technical solution can achieve the above-mentioned beneficial effect is described below in conjunction with FIG. 6 . Specifically, refer to FIG. 6 , which is a schematic diagram of two USIMs entering CM-IDLE or CM-CONNECTED synchronously. As shown in Figure 6, it can be seen that USIM1 and USIM2 can enter CM-IDLE or CM-CONNECTED at the same time. Specifically, when the release wireless signaling connection (AN signaling connection released) for USIM1 and USIM2 is obtained, USIM1 and USIM2 enter CM-IDLE at the same time; established), USIM1 and USIM2 enter CM-CONNECTED at the same time, or, when the initial NAS message (initial NAS message) for USIM1 and USIM2 is obtained, USIM1 and USIM2 enter CM-CONNECTED at the same time. Therefore, when USIM1 receives a paging and responds to the paging and enters the RRC connection state, USIM2 can maintain the communication connection with the access network equipment and AMF network elements even if it has no business, and subsequently establish data radio bearers as needed (data radio bearer, DRB), and the communication connection with UPF network elements. Since the overhead of the CM-CONNECTED state is mainly connected to the air interface, as long as any USIM needs to maintain the RRC state RRC-CONNECTED, maintain the USIM1 and USIM2 in the CM-CONNECTED state; and when all USIMs can release the RRC state to RRC When -IDLE, USIM1 and USIM2 will be released to CM-IDLE state, that is, the RRC state and CM state of USIM1 and USIM2 are unified.

In a possible implementation manner, step 503 includes: the terminal device sends a third RRC message to the access network device, the third RRC message is used to request establishment of the first control plane connection, and the third RRC message includes the first NAS request message, a first routing identifier, and a second routing identifier; the terminal device receives a fourth RRC message from the access network device, the fourth RRC message includes a response message to the first NAS request message, and the fourth RRC message is used to indicate the first control plane Connection established successfully.

Wherein, the fourth RRC message may be, for example, a downlink information transfer (DL information transfer) or an RRC reconfiguration message or an RRC establishment completion message, which is not limited here. In a possible implementation manner, the fourth RRC message may be a response message of the third RRC message, which is not limited here.

In addition, after step 503, when the first USIM and the second USIM interact with their corresponding AMF network elements, the involved messages need to carry tenth indication information, and the tenth indication information is used to indicate the AMF network element receiving the message or USIM.

Exemplarily, when the first USIM and the first AMF network element are involved in uplink and/or downlink data transmission, tenth indication information may be carried, where the tenth indication information may be, for example, the identifier of the first network, the identifier of the first USIM , the identity of the first AMF network element, etc.; when the second USIM and the second AMF network element involve uplink and/or downlink data transmission, the tenth indication information may be, for example, the identity of the second network, the identity of the second USIM, the second 2. The identification of the AMF network element, etc. Optionally, the data may be NAS messages.

As another example, when the first USIM and the first AMF network element involve uplink and/or downlink data transmission, or when the second USIM and the second AMF network element involve uplink and/or downlink data transmission, it may carry The tenth indication information, the tenth indication information may be an indication bit, for example, the indication bit is 1 bit, "0" means that the uplink and/or downlink data belong to the first USIM, and "1" means that the uplink and/or downlink data belong to the first USIM Two USIMs. Further, for the data sent by the first USIM to the first AMF, the carrying indication bit is set to "0", then the RAN sends the data to the first AMF, and for the data sent by the second USIM to the second AMF, the carried indication If the bit is set to "1", the RAN sends the data to the second AMF; similarly, optionally, for the data sent by the first AMF to the first USIM, the carrying indicator bit is set to "0", then the RAN sends the data For the data sent to the first USIM by the second AMF to the second USIM, the carrying indication bit is set to "1", and the RAN sends the data to the second USIM. Optionally, the data may be NAS messages.

In addition, the access network device may map the data plane, protocol data unit (protocol data unit, PDU) session, and service quality (quality of service, QoS) flow of the first USIM to the first data radio bearer (data radio bearer, DRB) In addition, the access network device can also map the data plane, PDU session, and QoS flow of the second USIM to the first DRB; or, the access network device can map the data plane, PDU session, and QoS flow of the first USIM On the first DRB, the access network device maps the data plane, PDU session, and QoS flow of the second USIM to the second DRB, which is not limited here.

Wherein, both the first DRB and the second DRB are DRBs established between the terminal device and the access network device through the first control plane connection, and the first DRB and the second DRB are different.

It can be seen that in the above technical solution, the access network device may receive a paging message from the first AMF network element indicating that the USIM indicated by the first USIM identifier is paged, and then send the network identifier and the paging message to the terminal device. A paging message calling the identity of the first USIM, so that the terminal device establishes the first USIM and the first USIM of the access network device under the condition that the first USIM and the second USIM belong to one or more networks supported by the access network device. The control plane connection, and the second control plane connection between the second USIM and the access network device, so that when the first USIM is paged, the first USIM that is paged and the second USIM that is not paged are established and connected. Communication connection between network access devices, at this time, the network of the second USIM does not need to page the second USIM again, thereby improving the efficiency of paging USIM and network resource utilization in the scenario of combining multiple USIMs and MOCNs.

In a possible implementation manner, the method may further include: the terminal device determining that the first USIM and the second USIM belong to one or more networks supported by the access network device.

In a possible implementation manner, the access network device establishes a first control plane connection between the first USIM and the access network device, and a second control plane connection between the second USIM and the access network device, including: the access network The device receives the first RRC message from the terminal device; the access network device sends the first NAS request message to the first AMF network element according to the first routing identifier; the access network device sends the second NAS request message to the second AMF network element according to the second routing identifier NAS request message; the access network device receives a response message of the first NAS request message from the first AMF network element; the access network device receives a response message of the second NAS request message from the second AMF network element; the access network device sends a response message to the terminal The device sends a second RRC message, where the second RRC message includes a response message to the first NAS request message and a response message to the second NAS request message, and the second RRC message is used to indicate that the first control plane connection is established successfully.

Optionally, the first NAS request message may carry the N2 message of the first USIM and send it to the first AMF network element, and the N2 message of the first USIM may be an initial UE message, which is not limited here.

Optionally, the second NAS request message may carry the N2 message of the second USIM and send it to the second AMF network element, and the N2 message of the second USIM may be an initial UE message, which is not limited here.

It should be noted that in this application, the access network device may first send the first NAS request message to the first AMF network element according to the first routing identifier, and then send the second NAS request message to the second AMF network element according to the second routing identifier message; or, the access network device may first send the second NAS request message to the second AMF network element according to the second routing identifier, and then send the first NAS request message to the first AMF network element according to the first routing identifier; or, then The network access device may simultaneously send the first NAS request message to the first AMF network element according to the first route identifier, and send the second NAS request message to the second AMF network element according to the second route identifier, which is not limited herein. Similarly, the access network device may first receive the response message of the first NAS request message from the first AMF network element, and then receive the response message of the second NAS request message from the second AMF network element; or, the access network device may first receive the response message of the first NAS request message from the second AMF network element; Receive the response message of the second NAS request message from the second AMF network element, and then receive the response message of the first NAS request message from the first AMF network element; or, the access network device may receive the first NAS request message from the first AMF network element at the same time The response message of the NAS request message is to receive the response message of the second NAS request message from the second AMF network element, which is not limited here.

It can be understood that, in this application, the access network device sends the first NAS request message to the first AMF network element according to the first routing identifier, and the access network device receives the response of the first NAS request message from the first AMF network element Executed before the message; the access network device sends the second NAS request message to the second AMF network element according to the second route identifier, and is executed before the access network device receives a response message of the second NAS request message from the second AMF network element.

Optionally, the access network device may also establish the N3 connection of the first USIM with the UPF network element. It can be understood that, for a USIM that has not been paged, the access network device may not establish an N3 connection with the UPF network element. That is, the access network device may not establish the N3 connection of the second USIM with the UPF network element.

Optionally, the access network device may also send sixth indication information to the second AMF network element according to the second routing identifier, where the sixth indication information is used to indicate that the reason for establishing a communication connection with the second AMF network element is that the first USIM and The second USIM shares the same control plane connection. Correspondingly, the second AMF network element may receive sixth indication information from the access network device. Therefore, the second AMF network element can learn that the second USIM has no service needs to transmit according to the sixth indication information, and the second AMF network element can also learn that the second USIM passively enters the RRC connection state according to the sixth indication information, and the second AMF network element can also It may be determined not to initiate a UE context release command (UE context release command) message to the access network device according to the sixth indication information, and the UE context release command is used to indicate the release of the second USIM between the access network device and the second AMF network element The N2 connection.

It should be noted that in this application, the access network device sends the second NAS request message to the second AMF network element according to the second routing identifier and the access network device sends the sixth indication to the second AMF network element according to the second routing identifier Information can be executed concurrently. For example, the second NAS request message and the sixth indication information may be carried in the N2 message of the second USIM and sent to the second AMF network element, which is not limited here.

In a possible implementation manner, the access network device establishes a first control plane connection between the first USIM and the access network device, and a second control plane connection between the second USIM and the access network device, including: the access network The device receives the third RRC message from the terminal device; the access network device sends the first NAS request message to the first AMF network element according to the first routing identifier; the access network device sends the second NAS request message to the second AMF network element according to the second routing identifier The identifier of the USIM and the sixth indication information, the sixth indication information is used to indicate that the reason for establishing a communication connection with the second AMF network element is that the first USIM and the second USIM share the same control plane connection; The element receives the response message of the first NAS request message; the access network device receives from the second AMF network element a message indicating that the communication connection between the second USIM and the second AMF network element is successfully established; the access network device sends a message to the terminal The device sends a fourth RRC message.

It should be noted that in this application, the access network device may first send the first NAS request message to the first AMF network element according to the first routing identifier, and then send the second USIM request message to the second AMF network element according to the second routing identifier. identification and sixth indication information; or, the access network device may first send the second USIM identification and sixth indication information to the second AMF network element according to the second routing identification, and then send the second USIM identification and sixth indication information to the first AMF network element according to the first routing identification Send the first NAS request message; or, the access network device sends the first NAS request message to the first AMF network element according to the first routing identifier at the same time, and sends the second USIM identifier and The sixth instruction information is not limited here. Similarly, the access network device may first receive the response message of the first NAS request message from the first AMF network element, and then receive the response message indicating the communication connection between the second USIM and the second AMF network element from the second AMF network element. A message of successful establishment; or, the access network device may first receive a message indicating that the communication connection between the second USIM and the second AMF network element is successfully established from the second AMF network element, and then receive the message from the first AMF network element The response message of the first NAS request message; or, the access network device may receive the response message of the first NAS request message from the first AMF network element at the same time, and receive the response message from the second AMF network element for indicating the second USIM and the second AMF The message that the communication connection between the network elements is successfully established is not limited here.

It can be understood that, in this application, the access network device sends the first NAS request message to the first AMF network element according to the first routing identifier, and the access network device receives the response of the first NAS request message from the first AMF network element Execute before the message; the access network device sends the second USIM identifier and the sixth indication information to the second AMF network element according to the second routing identifier, and the access network device receives from the second AMF network element for indicating the second USIM and the sixth indication information. It is executed before the message that the communication connection between the second AMF network elements is successfully established.

Wherein, the access network device sends the second USIM identifier and the sixth indication information to the second AMF network element according to the second route identifier, and correspondingly, the second AMF network element may receive the second USIM identifier and the sixth indication information from the access network device. Sixth instruction information. Therefore, the second AMF network element can learn that the second USIM has no service needs to transmit according to the sixth indication information, and the second AMF network element can also learn that the second USIM passively enters the RRC connection state according to the sixth indication information, and the second AMF network element can also It may be determined not to initiate a UE context release command (UE context release command) message to the access network device according to the sixth indication information, and the UE context release command is used to indicate the release of the second USIM between the access network device and the second AMF network element The N2 connection.

In a possible implementation manner, the method further includes: the access network device associates and stores the first context information of the first USIM and the first context information of the second USIM. Wherein, the first context information of the first USIM includes one or more of the following: the identity of the first USIM, the identity of the first network, and the first context information of the second USIM includes one or more of the following: ID, ID of the second network.

Optionally, the first context information of the first USIM may further include one or more of the following: first access stratum (Access stratum, AS) security context, first wireless capability information of the terminal device, signaling radio bearer ( Signaling radio bearer (SRB) first configuration information, data radio bearer (data radio bearer, DRB) first configuration information.

Optionally, the first context information of the second USIM may also include one or more of the following: the second AS security context, the second wireless capability information of the terminal device, the second configuration information of the SRB, and the second configuration information of the DRB .

Optionally, the first AS security context is the same as the second AS security context, the first wireless capability information of the terminal device is the same as the second wireless capability information of the terminal device, and the first configuration information of the SRB is the same as the second configuration information of the SRB , the first configuration information of the DRB is the same as the second configuration information of the DRB.

It should be noted that in this application, the first context information of the first USIM is the context information of the first USIM in the access network device; the first context information of the second USIM is the context information of the second USIM in the access network device .

Referring to FIG. 7 , referring to FIG. 7 , FIG. 7 is a schematic flowchart of another paging method provided by an embodiment of the present application. Wherein, the access network device in FIG. 7 is the access network device 10 in FIG. 2, the terminal device in FIG. 7 is the terminal device 20 in FIG. 2, and the first AMF network element in FIG. 7 is the The first AMF network element 30, and the second AMF network element in FIG. 7 is the second AMF network element 40 in FIG. 2 . As shown in Figure 7, the method includes but is not limited to the following steps:

701-702. are the same as steps 501-502 in FIG. 5 and will not be repeated here.

703. The terminal device sends a first RRC message to the access network device. The first RRC message is used to request the establishment of the first control plane connection. The first RRC message includes the first NAS request message, the second NAS request message, and the first routing identifier and the second routing identifier, the first NAS request message includes the identifier of the first USIM, the second NAS request message includes the identifier of the second USIM, and the first NAS request message is used for the first USIM to establish a communication connection with the first AMF network element, The second NAS request message is used for the second USIM to establish a communication connection with the second AMF network element.

Optionally, step 703 may be replaced by: the terminal device sends a third RRC message to the access network device, the third RRC message is used to request establishment of the first control plane connection, and the third RRC message includes the first NAS request message, the second A routing identifier and a second routing identifier, the first NAS request message includes the identifier of the first USIM, and the first NAS request message is used for the first USIM to establish a communication connection with the first AMF network element.

Wherein, regarding step 703, reference may be made to the relevant description above, and details are not repeated here.

704. The access network device sends the first NAS request message to the first AMF network element according to the first route identifier.

Wherein, regarding step 704, reference may be made to the relevant description above, and details are not repeated here.

705. The access network device sends the second NAS request message to the second AMF network element according to the second route identifier.

Optionally, if step 703 is replaced by: the terminal device sends a third RRC message to the access network device, the third RRC message is used to request establishment of the first control plane connection, and the third RRC message includes the first NAS request message, the first The routing identifier and the second routing identifier, the first NAS request message includes the identifier of the first USIM, and the first NAS request message is used for the first USIM to establish a communication connection with the first AMF network element, then step 705 can be replaced by: access network The device sends the identity of the second USIM and sixth indication information to the second AMF network element according to the second route identification, and the sixth indication information is used to indicate that the reason for establishing a communication connection with the second AMF network element is the first USIM and the second USIM share the same control plane connection.

Wherein, regarding step 705, reference may be made to the relevant description above, and details are not repeated here.

It should be noted that in this application, there is no necessary order of execution between step 704 and step 705, and step 704 can be executed first, and then step 705 can be executed; step 705 can also be executed first, and then step 704 can be executed; it can also be executed at the same time Step 704 and step 705 are not limited here.

706. The first AMF network element sends a first request message to the access network device, the first request message includes the identifier of the first USIM, and the first request message is used to request establishment of the N2 connection of the first USIM.

Wherein, the first request message may be, for example, an initial context setup request (initial context setup request) message or other messages, which is not limited here.

707. The second AMF network element sends a second request message to the access network device, the second request message includes the identifier of the second USIM, and the second request message is used to request establishment of the N2 connection of the second USIM.

Wherein, the second request message may be, for example, an initial context setup request (initial context setup request) message or other messages, which is not limited here.

Wherein, if step 705 is replaced by: the access network device sends the identity of the second USIM and the sixth indication information to the second AMF network element according to the second routing identity, and the sixth indication information is used to indicate the establishment of communication with the second AMF network element The reason for the connection is that the first USIM and the second USIM share the same control plane connection, then step 707 may be replaced by: the second AMF network element sends a second request message to the access network device according to the sixth indication information.

It should be noted that in this application, there is no necessary execution sequence between step 706 and step 707. Step 706 can be executed first, and then step 707 can be executed; step 707 can also be executed first, and then step 706 can be executed; it can also be executed simultaneously Step 706 and step 707 are not limited here.

708. The access network device sends a response message to the first request message to the first AMF network element, where the response message to the first request message is used to indicate that the N2 connection of the first USIM is established successfully.

Wherein, the response message of the first request message may be, for example, an initial context setup response (initial context setup response) message or other messages, which is not limited here.

709. The access network device sends a response message to the second request message to the second AMF network element, where the response message to the second request message is used to indicate that the N2 connection of the second USIM is successfully established.

Wherein, the response message of the second request message may be, for example, an initial context establishment response message or other messages, which is not limited here.

It should be noted that in this application, there is no necessary order of execution between step 708 and step 709, step 708 can be executed first, and then step 709 can be executed; step 709 can also be executed first, and then step 708 can be executed; it can also be executed at the same time Step 708 and step 709 are not limited here.

710. The access network device associates the first context information of the first USIM with the first context information of the second USIM.

Wherein, regarding step 710, reference may be made to the relevant description above, and details are not repeated here.

It should be noted that in this application, step 710 may be performed after step 705 and any step before step 711, which is not limited here.

711. The first AMF network element sends a response message to the first NAS request message to the access network device.

Wherein, regarding step 711, reference may be made to the relevant description above, and details are not repeated here.

Optionally, the first AMF network element in this step sends the response message of the first NAS request message to the access network device may be included in step 706, that is, the response message of the first NAS request message is included in the first request message sent to the access network device.

712. The second AMF network element sends a response message of the second NAS request message to the access network device.

Optionally, the second AMF network element in this step sends the response message of the second NAS request message to the access network device, which may be included in step 707, that is, the response message of the second NAS request message is included in the second request message sent to the access network device.

Optionally, if step 707 is replaced by: the second AMF network element sends a second request message to the access network device according to the sixth indication information, then step 712 may be replaced by: the second AMF network element sends a request message to the access network device for A message indicating that the communication connection between the second USIM and the second AMF network element is successfully established.

Wherein, regarding step 712, reference may be made to the relevant description above, and details are not repeated here.

It should be noted that in this application, there is no necessary order of execution between step 711 and step 712. Step 711 can be executed first, and then step 712 can be executed; step 712 can also be executed first, and then step 711 can be executed; it can also be executed at the same time Step 711 and step 712 are not limited here.

713. The access network device sends a second RRC message to the terminal device, the second RRC message includes a response message to the first NAS request message and a response message to the second NAS request message, and the second RRC message is used to indicate the first control plane connection Created successfully.

Wherein, if step 712 is replaced by: the second AMF network element sends a message for indicating that the communication connection between the second USIM and the second AMF network element is successfully established to the access network device, then step 713 may be replaced by: access The network device sends the fourth RRC message to the terminal device.

Wherein, regarding step 713, reference may be made to the relevant description above, and details are not repeated here.

Wherein, for actions after step 713, reference may be made to actions after step 503 in FIG. 5 , and details are not described here.

It can be seen that, in the above technical solution, the access network device may receive a paging message from the first AMF network element indicating that the USIM indicated by the identifier of the first USIM is paged, and then send the network identifier and paging message to the terminal device. A paging message calling the identity of the first USIM, so that the terminal device establishes the first USIM and the first USIM of the access network device under the condition that the first USIM and the second USIM belong to one or more networks supported by the access network device. The control plane connection, and the second control plane connection between the second USIM and the access network device, so that when the first USIM is paged, the first USIM that is paged and the second USIM that is not paged are established and connected. Communication connection between network access devices, at this time, the network of the second USIM does not need to page the second USIM again, thereby improving the efficiency of paging USIM and network resource utilization in the scenario of combining multiple USIMs and MOCNs.

Referring to FIG. 8 , referring to FIG. 8 , FIG. 8 is a schematic flowchart of another paging method provided by an embodiment of the present application. Wherein, the access network device in FIG. 8 is the access network device 10 in FIG. 2, the terminal device in FIG. 8 is the terminal device 20 in FIG. 2, and the second AMF network element in FIG. 8 is the The second AMF network element 40 . As shown in Figure 8, the method includes but is not limited to the following steps:

801. The second AMF network element sends a fourth paging message to the access network device. The fourth paging message includes the identity of the second USIM and one or more of the following: the identity of the first USIM, the seventh indication information, the second USIM The four paging message is used to indicate that the USIM indicated by the identity of the second USIM is paged, the second AMF network element is an AMF network element serving the second USIM, and the identity of the first USIM and/or the seventh indication information is used for It indicates that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device.

For the identifier of the first USIM, the identifier of the second USIM, the first control plane connection, and the second control plane connection, reference may be made to the relevant description above, and details are not repeated here.

Wherein, the identifier of the first USIM and/or the seventh indication information are used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device, and may be replaced by It is: the seventh indication information is used to instruct the access network device to determine whether there is context information of other USIMs associated with the identity of the second USIM, and the other USIMs include the first USIM; or, the identity of the first USIM and the seventh indication information are used for Instructing the access network device to determine whether the first context information of the first USIM exists; or, the identifier of the first USIM is used to instruct the access network device to determine whether the first context information of the first USIM exists, which is not limited here.

Wherein, for the first context information of the first USIM, reference may be made to the relevant description above, and details are not repeated here.

802. The access network device sends a first message to the terminal device according to the seventh indication information and/or the identifier of the first USIM, where the first message includes the identifier of the second USIM, and the first message is used to indicate the identifier of the second USIM. The indicated USIM is paged.

Optionally, the first message is a fifth RRC message, and the fifth RRC message further includes first indication information, and the first indication information is used to indicate that the USIM indicated by the identifier of the second USIM is paged. The fifth RRC message may be, for example, a downlink information transmission or an RRC reconfiguration message, which is not limited here. The fifth RRC message may be, for example, a downlink information transfer (DL information transfer) or an RRC reconfiguration message, which is not limited here.

Optionally, the first message may be a fifth paging message.

Optionally, step 802 may include: the access network device determines whether there is context information of other USIMs associated with the identity of the second USIM according to the seventh indication information, and the other USIMs include the first USIM, or the access network device Determine whether the first context information of the first USIM exists according to the seventh indication information and the identifier of the first USIM, or, the access network device determines whether the first context information of the first USIM exists according to the identifier of the first USIM; if , the access network device sends a first message to the terminal device through the first control plane connection, the first message is a fifth RRC message, and the fifth RRC message also includes first indication information, and the first indication information is used to indicate that the second USIM The USIM indicated by the identifier is paged; if not, the access network device sends the first message, and the first message is the fifth paging message.

Optionally, the access network device determines whether the first context information of the first USIM exists according to the seventh indication information and the identifier of the first USIM. ID, to determine whether the first USIM is in the RRC connection state. The access network device determines whether there is first context information of the first USIM according to the identifier of the first USIM, which may be replaced by: the access network device determines whether the first USIM is in the RRC connection state according to the identifier of the first USIM, where No restrictions.

It can be seen that in the above technical solution, the access network device may determine to send an RRC message or a paging message to the terminal device according to the seventh indication information and/or the identifier of the first USIM, so as to notify the terminal device through the RRC message or the paging message The USIM on which the device was paged.

803. The terminal device sends a second NAS request message and a second routing identifier to the access network device through the first control plane connection between the first USIM and the access network device, the second NAS request message includes the identifier of the second USIM, and the second The NAS request message is used for the second USIM to establish a communication connection with the second AMF network element, and the second AMF network element is an AMF network element serving the second USIM.

Wherein, for the second route identifier, reference may be made to the relevant description above, and details are not repeated here.

Wherein, the second NAS request message is used for the second USIM to establish a communication connection with the second AMF network element, and reference may be made to the above related description, and details are not repeated here.

Optionally, the second NAS request message and the second routing identifier in step 803 may be carried in the same RRC message and sent to the access network device, or carried in different RRC messages and sent to the access network device respectively, which is not done here limit.

804. The access network device sends the second NAS request message to the second AMF network element according to the second route identifier.

Wherein, regarding step 804, reference may be made to the relevant description above, and details are not repeated here.

Optionally, after step 804, reference may be made to step 707, step 709, and step 712 in FIG. 7, which will not be repeated here.

It can be seen that in the above technical solution, the access network device may receive a paging message from the second AMF network element indicating that the USIM indicated by the identifier of the second USIM is paged, and then send a paging message to the terminal device to paging the second USIM. The message of the identification of the USIM enables the terminal device to send the second NAS request message and the second routing identification to the access network device through the first control plane connection between the first USIM and the access network device, thereby realizing the paging of the second USIM At this time, the second NAS request message and the second routing identifier may be sent to the access network device through the existing communication connection between the first USIM and the access network device, so as to establish a communication connection with the second AMF. At this time, the terminal device does not need to establish a control plane connection with the access network device for the second USIM, thereby improving the efficiency of paging USIMs and network resource utilization in the scenario of combining multiple USIMs and MOCNs.

In a possible implementation manner, the method further includes: the terminal device sends a sixth RRC message to the access network device, the sixth RRC message is used to request establishment of the first control plane connection, and the sixth RRC message includes the first NAS request message, the first routing identifier, and one or more of the following: the identifier of the second USIM, the identifier of the second network, the second USIM belongs to the second network, and the first NAS request message is used for the first USIM and the first AMF network element Establish a communication connection; the terminal device receives a seventh RRC message from the access network device, the seventh RRC message includes a response message to the first NAS request message, and the seventh RRC message is used to indicate that the first control plane connection is established successfully.

Optionally, before the terminal device sends the sixth RRC message to the access network device, the method further includes: the terminal device receives a first paging message and a network identifier from the access network device, the first paging message includes the first USIM ID, the first paging message is used to indicate that the USIM indicated by the ID of the first USIM is paged, and the network ID is used to identify one or more networks supported by the access network device; the terminal device sends the first USIM to the access network device The six RRC messages include: when the first USIM and the second USIM belong to one or more networks supported by the access network device, the terminal device sends a sixth RRC message to the access network device.

Where the terminal device receives the first paging message and the network identifier from the access network device, reference may be made to the above related descriptions, and details are not repeated here.

Wherein, the sixth RRC message may be, for example, an uplink information transfer (UL information transfer) or an RRC establishment request message, which is not limited here.

Wherein, for the first NAS request message and the first routing identifier, reference may be made to the above related descriptions, and details are not repeated here.

Wherein, the first NAS request message is used for establishing a communication connection between the first USIM and the first AMF network element, and reference may be made to the above related descriptions, and details are not repeated here.

Wherein, the seventh RRC message may be, for example, a downlink information transfer (DL information transfer) or an RRC reconfiguration message or an RRC establishment completion message, which is not limited here. In a possible implementation manner, the seventh RRC message may be a response message of the sixth RRC message, which is not limited here.

Optionally, before the terminal device sends the sixth RRC message to the access network device, specific reference may be made to steps 501-502 in FIG. 5 , which will not be repeated here.

In a possible implementation manner, the method further includes: the terminal device receives a network identifier from the access network device, and the network identifier is used to identify one or more networks supported by the access network device; When the two USIMs belong to one or more networks supported by the access network device, the identifier of the second USIM is sent to the first AMF network element and the identifier of the first USIM is sent to the second AMF network element.

Optionally, when the first USIM and the second USIM belong to one or more networks supported by the access network device, the terminal device sends the identity of the second USIM to the first AMF network element and sends the identity of the second USIM to the second AMF network element. The identification of the first USIM may be performed before the terminal device sends the sixth RRC message to the access network device.

Wherein, the terminal device sending the second USIM identifier to the first AMF network element may include: the terminal device sends a NAS request message to the access network device, and the NAS request message includes the second USIM identifier; the access network device sends the second USIM identifier according to the first route The identifier sends a NAS request message to the first AMF network element, and the first routing identifier is received from the terminal device. Optionally, the NAS request message may be carried in the RRC message and sent to the access network device, and the NAS request message may be carried in the N2 message of the first USIM and sent to the first AMF network element.

Wherein, the terminal device sending the identifier of the first USIM to the second AMF network element may include: the terminal device sends a NAS request message to the access network device, and the NAS request message includes the identifier of the first USIM; the access network device sends the first USIM identifier according to the second route The identifier sends a NAS request message to the second AMF network element, and the second routing identifier is received from the terminal device. Optionally, the NAS request message may be carried in the RRC message and sent to the access network device, and the NAS request message may be carried in the N2 message of the second USIM and sent to the second AMF network element.

In a possible implementation manner, the method further includes: the terminal device sends the identity of the second network and/or second indication information to the first AMF network element, and the second indication information is used to indicate that the first USIM and the access network The first control plane connection of the device is the same as the second control plane connection between the second USIM and the access network device; the terminal device sends the identification of the first network and/or the third indication information to the second AMF network element, and the third indication information Used to indicate that the first control plane connection is the same as the second control plane connection.

Wherein, the second indication information is used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device, and may be replaced by: the second indication information is used to Indicating that the first USIM and the second USIM share the same control plane connection; or, the second indication information is used to indicate associating the first context information of the first USIM with the first context information of the second USIM.

Wherein, the third indication information is used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device, and may be replaced by: the third indication information is used to Indicating that the first USIM and the second USIM share the same control plane connection; or, the third indication information is used to indicate associating the first context information of the first USIM with the first context information of the second USIM.

It should be noted that in this application, the second indication information may be the same as or different from the third indication information.

Exemplarily, both the second indication information and the third indication information are used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device; or, Both the second indication information and the third indication information are used to indicate that the first USIM and the second USIM share the same control plane connection; or, the second indication information and the third indication information are both used to indicate that the first USIM's first context information Associated with the first context information of the second USIM.

Exemplarily, the second indication information is used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device, and the third indication information is used to indicate that the first USIM is connected to the access network device. A USIM and a second USIM share the same control plane connection; or, the second indication information is used to indicate that the first control plane connection between the first USIM and the access network device is connected with the second control plane connection between the second USIM and the access network device Similarly, the third indication information is used to indicate that the first context information of the first USIM is associated with the first context information of the second USIM; or, the second indication information is used to indicate that the first USIM and the second USIM share the same control plane connection , the third indication information is used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device; or, the second indication information is used to indicate that the first The USIM and the second USIM share the same control plane connection, and the third indication information is used to indicate that the first USIM and the second USIM share the same control plane connection; or, the second indication information is used to indicate that the first USIM and the second USIM share the same control plane connection. The third indication information is used to indicate that the first context information of the first USIM is associated with the first context information of the second USIM; or, the second indication information is used to indicate that the first context information of the first USIM is associated with the first context information of the second USIM. The first context information of the two USIMs is associated, and the third indication information is used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device; or, The second indication information is used to indicate that the first context information of the first USIM is associated with the first context information of the second USIM, and the third indication information is used to indicate that the first USIM and the second USIM share the same control plane connection; or, the second The indication information is used to indicate that the first context information of the first USIM is associated with the first context information of the second USIM, and the third indication information is used to indicate that the first context information of the first USIM is associated with the first context information of the second USIM associated.

Wherein, the terminal device sends the identification of the second network and/or the second indication information to the first AMF network element, which may include: the terminal device sends a NAS request message to the access network device, and the NAS request message includes the identification of the second network and/or Or the second indication information; the access network device sends a NAS request message to the first AMF network element according to the first routing identifier, and the first routing identifier is received from the terminal device. Optionally, the NAS request message may be carried in the RRC message and sent to the access network device, and the NAS request message may be carried in the N2 message of the first USIM and sent to the first AMF network element.

Wherein, the terminal device sends the identification of the first network and/or the third indication information to the second AMF network element, which may include: the terminal device sends a NAS request message to the access network device, and the NAS request message includes the identification of the first network and/or Or the third indication information: the access network device sends a NAS request message to the second AMF network element according to the second routing identifier, and the second routing identifier is received from the terminal device. Optionally, the NAS request message may be carried in the RRC message and sent to the access network device, and the NAS request message may be carried in the N2 message of the second USIM and sent to the second AMF network element.

It can be seen that in the above technical solution, the terminal device sends the identity of the second network and/or the second indication information to the first AMF network element, so that the first AMF network element can save the identity of the second network according to the second indication information to the second context of the first USIM. Similarly, the terminal device sends the identity of the first network and/or the third indication information to the second AMF network element, so that the second AMF network element can save the identity of the first network to the second USIM according to the third indication information. Two contexts.

In a possible implementation manner, the method may further include: the access network device receiving a sixth RRC message from the terminal device; the access network device sending the first NAS request message to the first AMF network element according to the first route identifier; and One or more of the following: the identity of the second USIM, the identity of the second network; the access network device receives a response message of the first NAS request message from the first AMF network element; the access network device sends the seventh RRC to the terminal device information.

Optionally, the first NAS request message and one or more of the following items: the identity of the second USIM and the identity of the second network may be carried in the N2 message of the first USIM and sent to the first AMF network element.

Wherein, the access network device receives the response message of the first NAS request message from the first AMF network element, and reference may be made to the above relevant description, and details are not repeated here.

Optionally, the access network device sending the seventh RRC message to the terminal device may be performed before the access network device determines to send the first message to the terminal device according to the seventh indication information and/or the identifier of the first USIM.

It can be seen that in the above technical solution, the terminal device sends a sixth RRC message to the access network device, and the sixth RRC message includes the first NAS request message, the first route identifier and one or more of the following: the identifier of the second USIM , the identifier of the second network, so that the access network device can send the first NAS request message to the first AMF network element according to the first routing identifier, so that the communication connection between the first USIM and the core network device can be established. At the same time, the access network device may also establish a communication connection with the first USIM according to the sixth RRC message.

In a possible implementation manner, the method may further include: the second AMF network element receives the identifier of the first network from the terminal device, and the first USIM belongs to the first network; the second AMF network element sends the first USIM to the access network device An identifier of a network, the identifier of the first network is included in the fourth paging message.

Referring to FIG. 9, referring to FIG. 9, FIG. 9 is a schematic flowchart of another paging method provided by an embodiment of the present application. Wherein, the access network device in FIG. 9 is the access network device 10 in FIG. 2, the terminal device in FIG. 9 is the terminal device 20 in FIG. 2, and the first AMF network element in FIG. 9 is the The first AMF network element 30, and the second AMF network element in FIG. 9 is the second AMF network element 40 in FIG. 2 . As shown in Figure 9, the method includes but is not limited to the following steps:

901-902. are the same as steps 501-502 in FIG. 5 and will not be repeated here.

903. When the first USIM and the second USIM belong to one or more networks supported by the access network device, the terminal device sends a sixth RRC message to the access network device, and the sixth RRC message is used to request the establishment of the first control On the connection side, the sixth RRC message includes the first NAS request message, the first routing identifier, and one or more of the following: the identifier of the second USIM, and the identifier of the second network.

904. The access network device sends the first NAS request message and one or more of the following items to the first AMF network element according to the first route identifier: the identifier of the second USIM, and the identifier of the second network.

Wherein, regarding step 904, reference may be made to the relevant description above, and details are not repeated here.

905. It is the same as step 706 in FIG. 7 and will not be repeated here.

906. It is the same as step 708 in FIG. 7 and will not be repeated here.

907. It is the same as step 710 in FIG. 7 and will not be repeated here.

It should be noted that in this application, step 907 may be performed after step 904 and any step before step 908, which is not limited here.

908. It is the same as step 711 in FIG. 7 and will not be repeated here.

909. The access network device sends a seventh RRC message to the terminal device, where the seventh RRC message includes a response message to the first NAS request message, and the seventh RRC message is used to indicate that the first control plane connection is established successfully.

910-913. are the same as steps 801 to 804 in FIG. 8, and will not be repeated here.

Optionally, after step 913, reference may be made to step 707, step 709, and step 712 in FIG. 7, which will not be repeated here.

It can be seen that in the above technical solution, the access network device may receive a paging message from the first AMF network element indicating that the USIM indicated by the first USIM identifier is paged, and then send the network identifier and the paging message to the terminal device. A paging message calling the identity of the first USIM, so that the terminal device sends a sixth RRC message to the access network device when the first USIM and the second USIM belong to one or more networks supported by the access network device, so that The access network device may establish a first control plane connection with the terminal device. Secondly, the access network device sends a first NAS request message to the first AMF network element, so that the access network device can establish the N2 connection of the first USIM with the core network device. At the same time, the access network device may receive from the second AMF network element a paging message indicating that the USIM indicated by the second USIM's identifier is paged, and then send a message to the terminal device to page the second USIM's identifier, so that The terminal device sends the second NAS request message and the second routing identifier to the access network device through the first control plane connection between the first USIM and the access network device, so that when paging the second USIM, the existing A communication connection between the USIM and the access network equipment sends a message to the terminal equipment to page the identity of the second USIM, and the terminal equipment sends a message to the access network through the existing communication connection between the first USIM and the access network equipment. The device sends the second NAS request message and the second route identifier, so as to establish a communication connection with the second AMF. At this time, the access network device does not need to send a paging message to the terminal device, and the terminal device does not need to establish a control plane connection with the access network device for the second USIM, thereby improving paging efficiency in the scenario where multiple USIMs and MOCNs are combined. Call USIM efficiency and network resource utilization.

Referring to FIG. 10 , referring to FIG. 10 , FIG. 10 is a schematic flowchart of another paging method provided by an embodiment of the present application. Wherein, the access network device in FIG. 10 is the access network device 10 in FIG. 2, the terminal device in FIG. 10 is the terminal device 20 in FIG. 2, and the first AMF network element in FIG. 10 is the The first AMF network element 30, and the second AMF network element in FIG. 10 is the second AMF network element 40 in FIG. 2 . As shown in Figure 10, the method includes but is not limited to the following steps:

1001. The access network device sends a network identifier to the terminal device, where the network identifier is used to identify one or more networks supported by the access network device, and the terminal device includes a first USIM and a second USIM.

Wherein, regarding step 1001, reference may be made to the relevant description above, and details are not repeated here.

1002. In the case where the first USIM and the second USIM belong to the above-mentioned one or more networks, the terminal device sends a third NAS request message to the first AMF network element and a fourth NAS request message to the second AMF network element, the first The three NAS request messages include the identifier of the first USIM, the identifier of the second USIM, the identifier of the second network, and the second indication information, and the fourth NAS request message includes the identifier of the first USIM, the identifier of the second USIM, the identifier of the first network, and the identifier of the second USIM. Identification and third indication information.

Wherein, regarding step 1002, reference may be made to the relevant description above, and details are not repeated here.

Optionally, step 1002 may be replaced by: when the first USIM and the second USIM belong to the above-mentioned one or more networks, the terminal device sends a third NAS request message to the first AMF network element and sends a third NAS request message to the second AMF network element. The unit sends a fourth NAS request message, the third NAS request message includes the first USIM identifier, the second USIM identifier, and second indication information, and the fourth NAS request message includes the first USIM identifier, the second USIM identifier, and the second USIM identifier. 3. Instructions.

1003. The first AMF network element associates the identity of the second USIM, the identity of the second network, and the second indication information with the second context information of the first USIM according to the identity of the second USIM and/or the second indication information.

Wherein, the second context information of the first USIM may include one or more of the following: an identifier of the first USIM, first NAS context information, connection management status information of the first USIM, and registration status information of the first USIM. Optionally, step 1003 can be understood as: the first AMF network element saves the identity of the second USIM, the identity of the second network, and the second indication information in the first In the second context information of the USIM.

Optionally, if step 1002 is replaced by: when the first USIM and the second USIM belong to the above-mentioned one or more networks, the terminal device sends a third NAS request message to the first AMF network element and sends a third NAS request message to the second AMF network element The unit sends a fourth NAS request message, the third NAS request message includes the first USIM identifier, the second USIM identifier, and second indication information, and the fourth NAS request message includes the first USIM identifier, the second USIM identifier, and the second USIM identifier. Three indication information, then step 1003 may be replaced by: the first AMF network element sends the second USIM identification, the second indication information and the second context information of the first USIM according to the second USIM identification and/or the second indication information associated. In addition, if the first AMF network element also receives the identity of the second network from the access network device, the first AMF network element may also combine the identity of the second network with the first The second context information association of USIM.

1004. The second AMF network element associates the identity of the first USIM, the identity of the first network, the third indication information, and the second context information of the second USIM according to the identity of the first USIM and/or the third indication information.

Wherein, the second context information of the second USIM may include one or more of the following: the identity of the second USIM, the second NAS context information, the connection management status information of the second USIM, and the registration status information of the second USIM.

It should be noted that in this application, the second context information of the first USIM is the context information of the first USIM in the first AMF network element; the second context information of the second USIM is the context information of the second USIM in the second AMF network element contextual information.

Optionally, step 1004 can be understood as: the second AMF network element saves the first USIM identifier, the first network identifier, and the third indication information in the second USIM according to the first USIM identifier and/or third indication information. In the second context information of the USIM.

Optionally, if step 1002 is replaced by: when the first USIM and the second USIM belong to the above-mentioned one or more networks, the terminal device sends a third NAS request message to the first AMF network element and sends a third NAS request message to the second AMF network element The unit sends a fourth NAS request message, the third NAS request message includes the first USIM identifier, the second USIM identifier, and second indication information, and the fourth NAS request message includes the first USIM identifier, the second USIM identifier, and the second USIM identifier. Three indication information, then step 1004 may be replaced by: the second AMF network element sends the first USIM identification, the third indication information and the second context information of the second USIM according to the first USIM identification and/or the third indication information associated. In addition, if the second AMF network element also receives the identifier of the first network from the access network device, the second AMF network element may also combine the identifier of the first network with the identifier of the second USIM according to the identifier of the first USIM and/or the third indication information. The second context information association of USIM. It should be noted that in this application, there is no necessary order of execution between step 1003 and step 1004, and step 1003 can be executed first, and then step 1004 can be executed; step 1004 can also be executed first, and then step 1003 can be executed; it can also be executed at the same time Step 1003 and step 1004 are not limited here.

1005. The first AMF network element sends a response message to the third NAS request message to the terminal device.

Wherein, the response message of the third NAS request message is used to indicate that the communication connection between the first USIM and the first AMF network element is established successfully.

Wherein, step 1005 may include: the first AMF network element sends a response message to the third NAS request message to the access network device, and the access network device sends a response message to the third NAS request message to the terminal device.

Wherein, the first AMF network element sends the response message of the third NAS request message to the access network device, which may include: the first AMF network element sends the third request message to the access network device, and the third request message includes the third NAS request message The response message for the message. The third request message is used to request to establish the N2 connection of the second USIM. The third request message may be, for example, an initial context setup request (initial context setup request) message or other messages, which is not limited here.

Wherein, the access network device sending the response message of the third NAS request message to the terminal device may include: the access network device sending an RRC message including the response message of the third NAS request message to the terminal device, including the third NAS request message. The RRC message of the response message may be, for example, a downlink information transfer (DL information transfer) or an RRC reconfiguration message or an RRC establishment completion message, which is not limited here.

1006. The second AMF network element sends a response message to the fourth NAS request message to the terminal device.

Wherein, the response message of the fourth NAS request message is used to indicate that the communication connection between the second USIM and the second AMF network element is established successfully.

Wherein, step 1006 may include: the second AMF network element sends a response message to the fourth NAS request message to the access network device, and the access network device sends a response message to the fourth NAS request message to the terminal device.

Wherein, the second AMF network element sends the response message of the fourth NAS request message to the access network device, which may include: the second AMF network element sends the fourth request message to the access network device, and the fourth request message includes the fourth NAS request message The response message for the message. The fourth request message is used to request to establish the N2 connection of the second USIM. The fourth request message may be, for example, an initial context setup request (initial context setup request) message or other messages, which is not limited here.

Wherein, the access network device sending the response message of the fourth NAS request message to the terminal device may include: the access network device sending an RRC message including the response message of the fourth NAS request message to the terminal device, including the response message of the fourth NAS request message The RRC message of the response message may be, for example, a downlink information transfer (DL information transfer) or an RRC reconfiguration message or an RRC establishment completion message, which is not limited here.

It should be noted that in this application, there is no necessary order of execution between step 1004 and step 1005, and step 1004 can be executed first, and then step 1005 can be executed; step 1005 can also be executed first, and then step 1004 can be executed; it can also be executed at the same time Step 1004 and step 1005 are not limited here.

1007. The second USIM enters the CM-IDLE state.

Wherein, step 1006 may include: the second AMF network element sends a UE context release command message to the access network device, and the UE context release command message is used to indicate the release of the second USIM between the access network device and the second AMF network element The N2 connection; the access network device sends an RRC release message to the terminal device, and the RRC release message is used to indicate the release of the RRC connection between the access network device and the terminal device. At this time, the second USIM enters the RRC idle state from the RRC connected state.

Steps 1008-1011 are the same as steps 801-804 in FIG. 8, and will not be repeated here.

Optionally, after step 1011, reference may be made to step 707, step 709, and step 712 in FIG. 7, which will not be repeated here.

It can be seen that in the above technical solution, the access network device sends the network identifier to the terminal device, so that the terminal device sends the first USIM and the second USIM to one or more networks supported by the access network device. The AMF network element and the second AMF network element send a corresponding NAS request message, so that the first AMF network element can associate the identity of the second USIM and the identity of the second network with the first context information of the first USIM, so that the second The AMF network element associates the identifier of the first USIM, the identifier of the first network with the first context information of the second USIM. At the same time, when the second USIM enters the CM-IDLE state, the access network device may receive from the second AMF network element a paging message indicating that the USIM indicated by the second USIM's identifier is paged, and then send the paging message to the terminal device Paging the message of the identity of the second USIM, so that the terminal device sends the second NAS request message and the second routing identifier to the access network device through the first control plane connection between the first USIM and the access network device, thereby realizing the When calling the second USIM, a second NAS request message and a second route identifier can be sent to the access network device through the existing communication connection between the first USIM and the access network device, so as to establish communication with the second AMF connect. At this time, the terminal device does not need to establish a control plane connection with the access network device for the second USIM, thereby improving the efficiency of paging USIMs and network resource utilization in a scenario where multiple USIMs and MOCNs are combined.

Referring to FIG. 11 , referring to FIG. 11 , FIG. 11 is a schematic flowchart of another paging method provided by an embodiment of the present application. Wherein, the access network device in FIG. 11 is the access network device 11 in FIG. 2, the terminal device in FIG. 11 is the terminal device 20 in FIG. 2, and the first AMF network element in FIG. 11 is the The first AMF network element 30, and the second AMF network element in FIG. 11 is the second AMF network element 40 in FIG. 2 . As shown in Figure 11, the method includes but is not limited to the following steps:

1101. The first AMF network element sends a sixth paging message to the access network device, the sixth paging message includes the identifier of the first USIM and the general identifier of the terminal device, and the sixth paging message is used to indicate the identifier of the first USIM The indicated USIM is paged, and the first AMF network element is the AMF network element serving the first USIM.

Wherein, the universal identifier of the terminal equipment is used to determine the paging time. It can be understood that the universal identifier of the terminal device may include the universal identifier of the first USIM and the universal identifier of the second USIM, and the universal identifier of the first USIM and the universal identifier of the second USIM are the same identifier. In step 1101, the universal identifier of the terminal device may be the universal identifier of the first USIM.

Optionally, step 1101 may be replaced by: the first AMF network element sends a sixth paging message to the access network device, and the sixth paging message includes the identifier of the first USIM, the identifier of the second USIM, and the common An identifier (a general identifier of the first USIM), and the sixth paging message is used to indicate that the USIM indicated by the identifier of the first USIM is paged. In the case that the sixth paging message includes the identifier of the first USIM, the identifier of the second USIM and the universal identifier of the terminal equipment (the universal identifier of the first USIM), the universal identifier of the first USIM is only used to determine the paging time. In the case where the sixth paging message includes the identifier of the first USIM and the universal identifier of the terminal equipment (the universal identifier of the first USIM), the universal identifier of the first USIM is not only used to determine the paging time, but also used to access The network device determines whether there is first context information of other USIMs associated with the first USIM.

Optionally, step 1101 may be replaced by: the first AMF network element sends a sixth paging message to the access network device, the sixth paging message includes the identifier of the first USIM, and the sixth paging message is used to indicate that the first USIM The USIM indicated by the identifier of the USIM is paged. That is, it can be understood that the steps involved in FIG. 11 may not include the general identifier of the terminal device.

1102. The second AMF network element sends a seventh paging message to the access network device, the seventh paging message includes the identifier of the second USIM and the general identifier of the terminal device, and the seventh paging message is used to indicate the identifier of the second USIM The indicated USIM is paged, and the second AMF network element is the AMF network element serving the second USIM.

Wherein, in step 1102, the universal identifier of the terminal device may be the universal identifier of the second USIM.

Optionally, step 1102 may be replaced by: the second AMF network element sends a seventh paging message to the access network device, and the seventh paging message includes the identifier of the first USIM, the identifier of the second USIM, and the common An identifier (a common identifier of the second USIM), and the seventh paging message is used to indicate that the USIM indicated by the identifier of the second USIM is paged. In the case that the seventh paging message includes the identifier of the first USIM, the identifier of the second USIM and the universal identifier of the terminal equipment (the universal identifier of the second USIM), the universal identifier of the second USIM is only used to determine the paging time. In the case that the seventh paging message includes the identity of the second USIM and the general identity of the terminal equipment (universal identity of the second USIM), the general identity of the second USIM is not only used to determine the paging time, but also can be used to access The network device determines whether there is first context information of other USIMs associated with the second USIM.

Wherein, step 1102 may be replaced by: the second AMF network element sends a seventh paging message to the access network device, the seventh paging message includes the identifier of the second USIM, and the seventh paging message is used to indicate the The USIM indicated by the ID is paged.

1103. The access network device sends a second paging message to the terminal device. The second paging message is sent at the paging time, and the paging time is determined according to the general identifier of the terminal device. The second paging message includes the first USIM identifier and The identity of the second USIM, the second paging message is used to indicate that the USIM indicated by the identity of the first USIM and the identity of the second USIM is paged.

Wherein, the sixth paging message also includes eighth indication information, and the eighth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is connected with the second USIM and the second control plane connection between the access network device Similarly, the seventh paging message also includes ninth indication information, and the ninth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is connected to the second control plane connection between the second USIM and the access network device same.

Wherein, the eighth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device, and may be replaced by: the eighth indication information is used to Indicating that the first USIM and the second USIM share the same control plane connection; or, the eighth indication information is used to indicate associating the first context information of the first USIM with the first context information of the second USIM.

Wherein, the ninth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device, and may be replaced by: the ninth indication information is used to Indicating that the first USIM and the second USIM share the same control plane connection; or, the ninth indication information is used to indicate associating the first context information of the first USIM with the first context information of the second USIM.

It should be noted that in this application, the eighth indication information may be the same as or different from the ninth indication information.

Exemplarily, both the eighth indication information and the ninth indication information are used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device; or, Both the eighth indication information and the ninth indication information are used to indicate that the first USIM and the second USIM share the same control plane connection; or, the eighth indication information and the ninth indication information are both used to indicate that the first USIM's first context information Associated with the first context information of the second USIM.

Exemplarily, the eighth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device, and the ninth indication information is used to indicate that the first USIM is connected to the access network device. A USIM and the second USIM share the same control plane connection; or, the eighth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is connected with the second USIM and the second control plane connection of the access network device Similarly, the ninth indication information is used to indicate that the first context information of the first USIM is associated with the first context information of the second USIM; or, the eighth indication information is used to indicate that the first USIM and the second USIM share the same control plane connection , the ninth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device; or, the eighth indication information is used to indicate that the first The USIM and the second USIM share the same control plane connection, and the ninth indication information is used to indicate that the first USIM and the second USIM share the same control plane connection; or, the eighth indication information is used to indicate that the first USIM and the second USIM share the same control plane connection. The ninth indication information is used to indicate that the first context information of the first USIM is associated with the first context information of the second USIM; or, the eighth indication information is used to indicate that the first context information of the first USIM is associated with the first context information of the second USIM. The first context information of the two USIMs is associated, and the ninth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device; or, The eighth indication information is used to indicate that the first context information of the first USIM is associated with the first context information of the second USIM, and the ninth indication information is used to indicate that the first USIM and the second USIM share the same control plane connection; or, the eighth The indication information is used to indicate to associate the first context information of the first USIM with the first context information of the second USIM, and the ninth indication information is used to indicate to associate the first context information of the first USIM with the first context information of the second USIM associated.

Optionally, step 1103 may include: if it is determined according to the eighth indication that there is no first context information of other USIMs associated with the identity of the first USIM, and it is determined according to the ninth indication that there is no association with the identity of the second USIM the first context information of other USIMs, the access network device sends the second paging message to the terminal device. Optionally, determining according to the eighth indication information that there is no first context information of other USIMs associated with the first USIM identifier may be replaced by: determining according to the eighth indication information whether other USIMs associated with the first USIM identifier are in RRC connection state. Optionally, determining according to the ninth indication information that there is no first context information of other USIMs associated with the identity of the second USIM may be replaced by: determining whether the other USIMs associated with the identity of the second USIM is in the RRC connection state.

Optionally, the sixth paging message further includes the identifier of the second USIM, and the seventh paging message further includes the identifier of the first USIM. Step 1103 may include: if it is determined according to the eighth indication information and the identifier of the second USIM that there is no The first context information of the second USIM associated with the identity of the first USIM, and according to the ninth indication information and the identity of the first USIM, it is determined that there is no first context information of the first USIM associated with the identity of the second USIM, then The network access device then sends the second paging message to the terminal device. Optionally, determining that there is no first context information of the second USIM associated with the identity of the first USIM according to the eighth indication information and the identity of the second USIM may be replaced by: according to the eighth indication information and the identity of the second USIM Determine whether the second USIM associated with the identifier of the first USIM is in an RRC connected state. Optionally, according to the ninth indication information and the identification of the first USIM, it is determined that there is no first context information of the first USIM associated with the identification of the second USIM, which may be replaced by: according to the ninth indication information and the identification of the first USIM Determine whether the first USIM associated with the identity of the second USIM is in an RRC connected state.

Optionally, if step 1101 is executed but step 1102 is not executed, then step 1103 may be replaced by: the access network device sends a second message to the terminal device, the second message includes the identifier of the first USIM, and the second message is used to indicate that the first USIM A USIM indicated by a USIM identifier is paged. Wherein, the second message may be the eighth paging message or the tenth RRC message, and the tenth RRC message may also include eleventh indication information, and the eleventh indication information is used to indicate that the USIM indicated by the identifier of the first USIM is paged. call. The tenth RRC message may be, for example, a downlink information transfer (DL information transfer) or an RRC reconfiguration message, which is not limited here.

Optionally, the access network device sends the second message to the terminal device, including: the access network device according to one or more of the following: the eighth indication information, the universal identifier of the terminal device (the universal identifier of the first USIM), the first USIM An identifier of a USIM, determining whether there is first context information of other USIMs associated with the first USIM; if so, the access network device sends the tenth RRC message to the terminal device through the first control plane connection; if not, the access network The device then sends an eighth paging message.

Optionally, if step 1101 is replaced by: the first AMF network element sends a sixth paging message to the access network device, the sixth paging message includes the identifier of the first USIM, the identifier of the second USIM, and the common identification (the general identification of the first USIM), then the access network device sends the second message to the terminal device, which may include: the access network device according to the identification of the second USIM and one or more of the following: the eighth indication information, the first An identifier of a USIM, determining whether there is the first context information of the second USIM associated with the identifier of the second USIM; if so, the access network device sends the tenth RRC message to the terminal device through the first control plane connection; if not, The access network device then sends the eighth paging message.

Wherein, if step 1101 is replaced by: the first AMF network element sends a sixth paging message to the access network device, and the sixth paging message includes the identifier of the first USIM, then the access network device sends the second message to the terminal device, Including: the access network device determines whether there is first context information of other USIMs according to the eighth indication information and/or the identifier of the first USIM; if yes, the access network device sends the tenth RRC message; if not, the access network device sends an eighth paging message.

Optionally, if step 1101 is not executed and step 1102 is executed, then step 1103 may be replaced by: the access network device sends a third message to the terminal device, the third message includes the identifier of the second USIM, and the third message is used to indicate that the second USIM The USIM indicated by the identity of the two USIMs is paged. Wherein, the third message may be the ninth paging message or the eleventh RRC message, and the eleventh RRC message may also include twelfth indication information, and the twelfth indication information is used to indicate the USIM indicated by the identity of the second USIM be paged. The eleventh RRC message may be, for example, a downlink information transfer (DL information transfer) or an RRC reconfiguration message, which is not limited here.

Optionally, the access network device sends the third message to the terminal device, including: the access network device determines whether other USIMs exist according to the ninth indication information and/or the universal identifier of the terminal device (the universal identifier of the second USIM). First context information; if yes, the access network device sends an eleventh RRC message to the terminal device through the first control plane connection; if not, the access network device sends a ninth paging message.

Optionally, if step 1102, it is replaced by: the second AMF network element sends a seventh paging message to the access network device, and the seventh paging message includes the identifier of the first USIM, the identifier of the second USIM, and the common identifier (the general identifier of the second USIM), the seventh paging message is used to indicate that the USIM indicated by the identifier of the second USIM is paged, then the access network device sends a third message to the terminal device, which may include: the access network The device determines whether there is first context information of the first USIM associated with the identifier of the first USIM according to the identifier of the first USIM and one or more of the following items: the ninth indication information and the identifier of the second USIM; if so, accesses The network device sends an eleventh RRC message to the terminal device through the first control plane connection; if not, the access network device sends a ninth paging message.

Wherein, step 1102 is replaced with: the second AMF network element sends a seventh paging message to the access network device, and the seventh paging message includes the identity of the second USIM, then the access network device sends a third message to the terminal device, including : The access network device determines whether there is first context information of the first USIM according to the ninth indication information and/or the identifier of the second USIM; if so, the access network device sends the tenth An RRC message; if not, the access network device sends a ninth paging message.

1104. The terminal device establishes the first control plane connection between the first USIM and the access network device, and the second control plane connection between the second USIM and the access network device; wherein, the first control plane connection and the second control plane connection are the same .

Optionally, step 1104 may include: the terminal device sends an eighth RRC message to the access network device, the eighth RRC message is used to request establishment of the first control plane connection, and the eighth RRC message includes the first NAS request message, the second A NAS request message, a first route identifier and a second route identifier, the first NAS request message includes the identifier of the first USIM, the second NAS request message includes the identifier of the second USIM, and the first NAS request message is used for the first USIM and the second USIM An AMF network element establishes a communication connection, the second NAS request message is used for the second USIM to establish a communication connection with the second AMF network element, the second AMF network element is an AMF network element serving the second USIM, and the first routing identifier includes the following One or more items: the first USIM identifier, the first network identifier, the first AMF network element identifier, the first USIM identifier is used to indicate the first AMF network element or the first network, and the first USIM belongs to the first Network; the second routing identifier includes one or more of the following: the identifier of the second USIM, the identifier of the second network, the identifier of the second AMF network element, and the identifier of the second USIM is used to indicate the second AMF network element or the second network, the second USIM belongs to the second network; the terminal device receives a ninth RRC message from the access network device, the ninth RRC message includes a response message to the first NAS request message and a response message to the second NAS request message, and the ninth RRC message It is used to indicate that the first control plane connection is established successfully.

Wherein, for the response message of the first NAS request message and the response message of the second NAS request message, reference may be made to the relevant description above, and details are not repeated here.

Optionally, if step 1101 is executed and step 1102 is not executed, for step 1104, reference may be made to 503 in FIG. 5 , and details are not repeated here.

Optionally, if step 1101 is not executed, step 1102 is executed, and for step 1104, reference may be made to 503 in FIG. 5 , and details are not repeated here. It can be understood that, when referring to step 503, the third RRC message includes the first NAS request message, the first routing identifier and the second routing identifier, and may be replaced by: the third RRC message includes the second NAS request message, the first routing identifier and the second route identifier, the fourth RRC message includes a response message to the first NAS request message, which may be replaced by: the fourth RRC message includes a response message to the second NAS request message. Correspondingly, for the access network device side, the access network device sends the first NAS request message to the first AMF network element according to the first route identifier, which may be replaced by: the access network device sends the first NAS request message to the first AMF network element according to the first route identifier The element sends the identification of the first USIM and the sixth indication information; the access network device sends the identification of the second USIM and the sixth indication information to the second AMF network element according to the second routing identification, which can be replaced by: the access network equipment according to the first The second route identifier sends the second NAS request message to the second AMF network element; the access network device receives the response message of the first NAS request message from the first AMF network element, which can be replaced by: the access network device receives the response message from the first AMF network element Receive a message indicating that the communication connection between the first USIM and the first AMF network element is successfully established; the access network device receives from the second AMF network element a message indicating the communication between the second USIM and the second AMF network element The message that the connection is established successfully may be replaced by: the access network device receives a response message of the second NAS request message from the second AMF network element.

Optionally, after step 1104, the terminal device may detect the paged USIM on a physical downlink shared channel (physical downlink shared channel, PDSCH) according to the identifier of the first USIM and the identifier of the second USIM. It can be understood that the terminal device may detect the paged USIM on the PDSCH according to the identifier of the first USIM and the identifier of the second USIM at the same paging moment or at different paging moments, which is not limited here.

In a possible implementation manner, the method further includes: the terminal device generates a universal identifier of the terminal device, and sends the universal identifier of the terminal device to the first AMF network element and the second AMF network element, and the first AMF network element serves as The AMF network element serving the first USIM, the second AMF network element is an AMF network element serving the second USIM; or, the terminal device receives the general identifier of the terminal device from the first AMF network element, and, from the second AMF network element Receiving the general identification of the terminal equipment; or, the terminal equipment receives the general identification of the terminal equipment from the first AMF network element, and sends the general identification of the terminal equipment to the second AMF network element, and the general identification of the terminal equipment is generated for the first AMF network element ; Or, the terminal device receives the universal identifier of the terminal device from the second AMF network element, and sends the universal identifier of the terminal device to the first AMF network element, and the universal identifier of the terminal device is generated for the second AMF network element.

Wherein, the terminal device generates a general identifier of the terminal device, and sends the general identifier of the terminal device to the first AMF network element and the second AMF network element, the first AMF network element is an AMF network element serving the first USIM, and the second AMF network element The network element is an AMF network element serving the second USIM; or, the terminal device receives the general identification of the terminal equipment from the first AMF network element, and receives the general identification of the terminal equipment from the second AMF network element; the terminal equipment receives the general identification of the terminal equipment from the first AMF network element; The AMF network element receives the general identification of the terminal equipment, and sends the general identification of the terminal equipment to the second AMF network element, and the general identification of the terminal equipment is generated for the first AMF network element; or, the terminal equipment receives the terminal equipment from the second AMF network element and send the universal identifier of the terminal equipment to the first AMF network element, the universal identifier of the terminal equipment is generated for the second AMF network element, and is executed before step 1101.

In a possible implementation manner, the method further includes: the terminal device sends fourth indication information to the first AMF network element, where the fourth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is related to The connection between the second USIM and the second control plane of the access network device is the same.

In a possible implementation manner, the method further includes: the terminal device sends fifth indication information to the second AMF network element, where the fifth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is related to The connection between the second USIM and the second control plane of the access network device is the same.

Wherein, the fourth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device, and may be replaced by: the fourth indication information is used to Indicating that the first USIM and the second USIM share the same control plane connection; or, the fourth indication information is used to indicate associating the first context information of the first USIM with the first context information of the second USIM.

Wherein, the fifth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device, and may be replaced by: the fifth indication information is used to Indicating that the first USIM and the second USIM share the same control plane connection; or, the fifth indication information is used to indicate associating the first context information of the first USIM with the first context information of the second USIM.

It should be noted that in this application, the fourth indication information may be the same as or different from the fifth indication information.

Exemplarily, both the fourth indication information and the fifth indication information are used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device; or, Both the fourth indication information and the fifth indication information are used to indicate that the first USIM and the second USIM share the same control plane connection; or, the fourth indication information and the fifth indication information are both used to indicate that the first USIM's first context information Associated with the first context information of the second USIM.

Exemplarily, the fourth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device, and the fifth indication information is used to indicate that the first USIM is connected to the access network device. A USIM and the second USIM share the same control plane connection; or, the fourth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is connected with the second USIM and the second control plane connection of the access network device Similarly, the fifth indication information is used to indicate that the first context information of the first USIM is associated with the first context information of the second USIM; or, the fourth indication information is used to indicate that the first USIM and the second USIM share the same control plane connection , the fifth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device; or, the fourth indication information is used to indicate that the first The USIM and the second USIM share the same control plane connection, and the fifth indication information is used to indicate that the first USIM and the second USIM share the same control plane connection; or, the fourth indication information is used to indicate that the first USIM and the second USIM share the same control plane connection. face connection, the fifth indication information is used to indicate that the first context information of the first USIM is associated with the first context information of the second USIM; or, the fourth indication information is used to indicate that the first context information of the first USIM is associated with the first context information of the second USIM The first context information of the two USIMs is associated, and the fifth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device; or, The fourth indication information is used to indicate that the first context information of the first USIM is associated with the first context information of the second USIM, and the fifth indication information is used to indicate that the first USIM and the second USIM share the same control plane connection; or, the fourth The indication information is used to indicate that the first context information of the first USIM is associated with the first context information of the second USIM, and the fifth indication information is used to indicate that the first context information of the first USIM is associated with the first context information of the second USIM. associated.

It should be noted that the eighth indication information may be the same as or different from the fourth indication information, which is not limited here.

Exemplarily, the fourth indication information and the eighth indication information are both used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device; or, Both the fourth indication information and the eighth indication information are used to indicate that the first USIM and the second USIM share the same control plane connection; or, the fourth indication information and the eighth indication information are both used to indicate that the first USIM's first context information Associated with the first context information of the second USIM.

Exemplarily, the fourth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device, and the eighth indication information is used to indicate that the first USIM is connected to the access network device. A USIM and the second USIM share the same control plane connection; or, the fourth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is connected with the second USIM and the second control plane connection of the access network device Similarly, the eighth indication information is used to indicate that the first context information of the first USIM is associated with the first context information of the second USIM; or, the fourth indication information is used to indicate that the first USIM and the second USIM share the same control plane connection , the eighth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device; or, the fourth indication information is used to indicate that the first The USIM and the second USIM share the same control plane connection, and the eighth indication information is used to indicate that the first USIM and the second USIM share the same control plane connection; or, the fourth indication information is used to indicate that the first USIM and the second USIM share the same control plane connection. The eighth indication information is used to indicate that the first context information of the first USIM is associated with the first context information of the second USIM; or, the fourth indication information is used to indicate that the first context information of the first USIM is associated with the first context information of the second USIM. The first context information of the two USIMs is associated, and the eighth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device; or, The fourth indication information is used to indicate that the first context information of the first USIM is associated with the first context information of the second USIM, and the eighth indication information is used to indicate that the first USIM and the second USIM share the same control plane connection; or, the fourth The indication information is used to indicate that the first context information of the first USIM is associated with the first context information of the second USIM, and the eighth indication information is used to indicate that the first context information of the first USIM is associated with the first context information of the second USIM associated.

It should be noted that the ninth indication information may be the same as or different from the fifth indication information, which is not limited here.

Exemplarily, both the fifth indication information and the ninth indication information are used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device; or, Both the fifth indication information and the ninth indication information are used to indicate that the first USIM and the second USIM share the same control plane connection; or, the fifth indication information and the ninth indication information are both used to indicate that the first USIM's first context information Associated with the first context information of the second USIM.

Exemplarily, the fifth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device, and the ninth indication information is used to indicate that the first USIM is connected to the access network device. A USIM and the second USIM share the same control plane connection; or, the fifth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is connected with the second USIM and the second control plane connection of the access network device Similarly, the ninth indication information is used to indicate that the first context information of the first USIM is associated with the first context information of the second USIM; or, the fifth indication information is used to indicate that the first USIM and the second USIM share the same control plane connection , the ninth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device; or, the fifth indication information is used to indicate that the first The USIM and the second USIM share the same control plane connection, and the ninth indication information is used to indicate that the first USIM and the second USIM share the same control plane connection; or, the fifth indication information is used to indicate that the first USIM and the second USIM share the same control plane connection. face connection, the ninth indication information is used to indicate that the first context information of the first USIM is associated with the first context information of the second USIM; or, the fifth indication information is used to indicate that the first context information of the first USIM is associated with the first context information of the second USIM The first context information of the two USIMs is associated, and the ninth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device; or, The fifth indication information is used to indicate that the first context information of the first USIM is associated with the first context information of the second USIM, and the ninth indication information is used to indicate that the first USIM and the second USIM share the same control plane connection; or, the fifth The indication information is used to indicate to associate the first context information of the first USIM with the first context information of the second USIM, and the ninth indication information is used to indicate to associate the first context information of the first USIM with the first context information of the second USIM associated.

Referring to FIG. 12 , referring to FIG. 12 , FIG. 12 is a schematic flowchart of another paging method provided by an embodiment of the present application. Wherein, the access network device in FIG. 12 is the access network device 12 in FIG. 2, the terminal device in FIG. 12 is the terminal device 20 in FIG. 2, and the first AMF network element in FIG. 12 is the The first AMF network element 30, and the second AMF network element in FIG. 12 is the second AMF network element 40 in FIG. 2 . As shown in Figure 12, the method includes but is not limited to the following steps:

1201. It is the same as step 1001 in FIG. 10 and will not be repeated here.

1202. When the first USIM and the second USIM belong to one or more networks supported by the access network device, the terminal device sends the fifth NAS request message to the first AMF network element and the sixth NAS request message to the second AMF network element The NAS request message, the fifth NAS request message includes the identifier of the first USIM, the general identifier of the terminal device and the fourth indication information, and the sixth NAS request message includes the identifier of the second USIM, the general identifier of the terminal device and the fifth indication information.

Where the terminal device sends the fifth NAS request message to the first AMF network element, reference may be made to the terminal device sending the first NAS request message to the first AMF network element, and details will not be described here.

Where the terminal device sends the sixth NAS request message to the second AMF network element, reference may be made to the terminal device sending the second NAS request message to the second AMF network element, and details are not described here.

1203. The first AMF network element associates the general identifier of the terminal device, the fourth indication information, and the second context information of the first USIM according to the fourth indication information.

Optionally, step 1203 may be replaced by: the first AMF network element saves the general identifier of the terminal device and the fourth indication information in the second context information of the first USIM according to the fourth indication information.

1204. The second AMF network element associates the general identifier of the terminal device, the fifth indication information, and the second context information of the second USIM according to the fifth indication information.

Optionally, step 1204 may be replaced by: the second AMF network element saves the general identifier of the terminal device and the fifth indication information in the second context information of the second USIM according to the fifth indication information.

It should be noted that in this application, there is no necessary order of execution between step 1203 and step 1204. Step 1203 can be executed first, and then step 1204 can be executed; step 1204 can also be executed first, and then step 1203 can be executed; it can also be executed at the same time Step 1203 and step 1204 are not limited here.

1205. The first AMF network element sends a response message to the fifth NAS request message to the terminal device.

Wherein, the response message of the fifth NAS request message is used to indicate that the communication connection between the access network device and the first USIM established by the first AMF network element is successfully established.

Wherein, for step 1205, reference may be made to step 1005 in FIG. 10 , which will not be repeated here.

1206. The second AMF network element sends a response message to the sixth NAS request message to the terminal device.

Wherein, the response message of the sixth NAS request message is used to indicate that the communication connection between the access network device and the second USIM established by the second AMF network element is successfully established.

Wherein, for step 1206, reference may be made to step 1006 in FIG. 10 , which will not be repeated here.

1207. Both the first USIM and the second USIM enter the CM-IDLE state.

Wherein, step 1207 may include: the first AMF network element sends a message to the access network device to indicate the release of the N2 connection of the first USIM between the access network device and the first AMF network element, and the second AMF network element sending to the access network device a message indicating to release the N2 connection of the second USIM between the access network device and the second AMF network element; A message for entering the RRC idle state: the access network device sends a message for instructing the second USIM to enter the RRC idle state from the RRC connected state to the terminal device.

1208-1211. are the same as steps 1101-1104 in FIG. 11 , and will not be repeated here.

It can be seen that in the above technical solution, the access network device can send a paging message for paging two USIMs to the terminal device at the same paging time, so that the terminal device can establish a relationship with the access network device for the paged USIM. Communication connection between. Secondly, when the first USIM and the second USIM have paging at the same time, the UE only needs to listen to the paging message once to know that the first USIM and the second USIM have downlink data and initiate a communication connection establishment to the network. In addition, when the paging times of the first USIM and the second USIM conflict, the terminal device can successfully monitor the paging of the first USIM and the second USIM, which avoids The paging time conflict causes the paging of the first USIM or the second USIM to be missed, thereby improving the efficiency of paging USIM and the utilization rate of network resources in the scenario where multiple USIMs and MOCNs are combined.

The foregoing mainly introduces the solution provided by the present application from the perspective of interaction between various network elements. It can be understood that, in order to implement the above functions, each network element includes a corresponding hardware structure and/or software module for performing each function. Those skilled in the art should easily realize that the present application can be implemented in the form of hardware or a combination of hardware and computer software in combination with the units and algorithm steps of each example described in the embodiments disclosed herein. Whether a certain function is executed by hardware or computer software drives hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

The embodiment of the present application can divide the functional modules of the terminal device or the access network device or the second AMF network element according to the above-mentioned method examples. For example, each functional module can be divided corresponding to each function, or two or more than two Functions are integrated in one processing module, and the above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules. It should be noted that the division of modules in the embodiment of the present application is schematic, and is only a logical function division, and there may be other division methods in actual implementation.

In the case of using an integrated unit, refer to FIG. 13 , which is a schematic structural diagram of a communication device provided in an embodiment of the present application. The communication device 1300 can be applied to the above methods shown in FIGS. 5-12 . As shown in FIG. 13 , the communication device 1300 includes: a processing module 1301 and a transceiver module 1302 . The processing module 1301 may be one or more processors, and the transceiver module 1302 may be a transceiver or a communication interface. The communication device may be used to implement the terminal device or the access network device or the second AMF network element involved in any of the above method embodiments, or be used to implement the functions of the network elements involved in any of the above method embodiments. The network element or network function may be a network element in a hardware device, or a software function running on dedicated hardware, or a virtualization function instantiated on a platform (for example, a cloud platform). Optionally, the communication device 1300 may further include a storage module 1303 for storing program codes and data of the communication device 1300 .

An example is when the communication device is used as a terminal device or a chip applied in the terminal device, and executes the steps performed by the terminal device in the foregoing method embodiments. The transceiver module 1302 is used to support communication with access network devices, etc. The transceiver module specifically performs the sending and/or receiving actions performed by the terminal device in Figures 5-12, for example, supporting the terminal device to perform steps 703 and 803 One or more steps in, and/or other processes for the techniques described herein. The processing module 1301 may be used to support the communication apparatus 1300 to execute the processing actions in the above method embodiments, for example, to support the terminal device to execute one or more steps in step 503 and step 1211, and/or other methods used in the technologies described herein. process.

An example is when the communication device is used as an access network device or a chip applied to the access network device, and executes the steps performed by the access network device in the foregoing method embodiments. The transceiver module 1302 is used to support communication with terminal equipment, etc., and specifically perform the sending and/or receiving actions performed by the access network equipment in Figures 5-13, such as supporting the access network equipment to perform steps 502 and One or more steps in 702, and/or other processes for the techniques described herein. The processing module 1301 may be used to support the communication device 1300 to perform the processing actions in the above method embodiments, for example, support the access network device to perform one or more steps in step 710 and step 907, and/or be used in the technology described herein other processes.

An example is when the communication device is used as the second AMF network element or a chip applied in the second AMF network element, and executes the steps performed by the second AMF network element in the above method embodiments. The transceiver module 1302 is configured to support communication with terminal equipment, etc., and specifically perform the sending and/or receiving actions performed by the second AMF network element in FIGS. 5-12 , for example, support the second AMF network element to perform step 707 and one or more steps in step 801, and/or other processes for the techniques described herein. The processing module 1301 can be used to support the communication device 1300 to perform the processing actions in the above method embodiments, for example, support the second AMF network element to perform one or more steps in step 1004 and step 1204, and/or be used for the Other processes of technology.

In a possible implementation manner, when the terminal device or the access network device or the second AMF network element is a chip, the transceiver module 1302 may be an interface, a pin, or a circuit. The interface can be used to input the data to be processed to the processor, and can output the processing result of the processor. In specific implementation, the interface can be a general purpose input output (GPIO) interface, which can communicate with multiple peripheral devices (such as display (LCD), camera (camara), radio frequency (radio frequency, RF) modules, antennas, etc. )connect. The interface is connected with the processor through the bus.

The processing module 1301 may be a processor, and the processor may execute computer-executed instructions stored in the storage module, so that the chip executes the methods involved in the embodiments of FIG. 5 to FIG. 12 .

Further, the processor may include a controller, an arithmetic unit and registers. Exemplarily, the controller is mainly responsible for decoding instructions and sending control signals for operations corresponding to the instructions. The arithmetic unit is mainly responsible for performing fixed-point or floating-point arithmetic operations, shift operations, and logic operations, and can also perform address operations and conversions. The register is mainly responsible for saving the register operands and intermediate operation results temporarily stored during the execution of the instruction. In specific implementation, the hardware architecture of the processor can be application specific integrated circuits (ASIC) architecture, microprocessor without interlocked piped stages architecture (MIPS) architecture, advanced streamlined instructions Advanced RISC machines (ARM) architecture or network processor (network processor, NP) architecture, etc. Processors can be single-core or multi-core.

The storage module may be a storage module in the chip, such as a register, a cache, and the like. The storage module can also be a storage module located outside the chip, such as read-only memory (Read Only Memory, ROM) or other types of static storage devices that can store static information and instructions, random access memory (Random Access Memory, RAM), etc. .

It should be noted that the respective functions of the processor and the interface can be realized through hardware design, software design, or a combination of software and hardware, which is not limited here.

FIG. 14 is a schematic structural diagram of a simplified terminal device provided in an embodiment of the present application. For ease of understanding and illustration, in FIG. 14 , a mobile phone is used as an example of a terminal device. As shown in FIG. 14 , the terminal device includes at least one processor, and may also include a radio frequency circuit, an antenna, and an input and output device. Wherein, the processor can be used to process communication protocols and communication data, and can also be used to control terminal equipment, execute software programs, process data of software programs, and the like. The terminal device may also include a memory, which is mainly used to store software programs and data. These related programs can be loaded into the memory when the communication device leaves the factory, or can be loaded into the memory later when needed. The radio frequency circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal. The antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves, and the antenna is the antenna provided in the embodiment of the present application. Input and output devices, such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal equipment may not have input and output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit. When data is sent to the terminal device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 14 . In an actual terminal device product, there may be one or more processors and one or more memories. A memory may also be called a storage medium or a storage device. The memory may be set independently of the processor, or may be integrated with the processor, which is not limited in this embodiment of the present application.

In this embodiment of the application, the antenna and radio frequency circuit with transceiver function can be regarded as the receiving unit and the transmitting unit of the terminal equipment (also collectively referred to as the transceiver unit), and the processor with processing function can be regarded as the processing unit of the terminal equipment . As shown in FIG. 14 , the terminal device includes a receiving module 31 , a processing module 32 and a sending module 33 . The receiving module 31 can also be called a receiver, a receiver, a receiving circuit, etc., and the sending module 33 can also be called a transmitter, a transmitter, a transmitter, a transmitting circuit, etc. The processing module 32 may also be called a processor, a processing board, a processing device, and the like.

For example, the processing module 32 is configured to execute functions of the terminal device in any of the embodiments shown in FIG. 5 to FIG. 12 .

FIG. 15 is a schematic structural diagram of a simplified access network device provided by an embodiment of the present application. The access network equipment includes a radio frequency signal transceiving and converting part and a part 42, and the radio frequency signal transceiving and converting part further includes a receiving module 41 and a sending module 43 (also collectively referred to as a transceiver module). The RF signal transceiver and conversion part is mainly used for the RF signal transceiver and the conversion of the RF signal and the baseband signal; the 42 part is mainly used for the baseband processing and controlling the access network equipment, etc. The receiving module 41 can also be called a receiver, a receiver, a receiving circuit, etc., and the sending module 43 can also be called a transmitter, a transmitter, a transmitter, a transmitting circuit, etc. The part 42 is usually the control center of the access network equipment, which can usually be referred to as a processing module, and is used to control the access network equipment to execute the steps performed by the terminal equipment or the access network equipment in FIGS. 5-12 above. For details, please refer to the description of the relevant part above.

Part 42 may include one or more single boards, and each single board may include one or more processors and one or more memories, and the processors are used to read and execute programs in the memories to realize baseband processing functions and interface network device control. If there are multiple single boards, each single board can be interconnected to increase the processing capacity. As an optional implementation, it is also possible that multiple single boards share one or more processors, or that multiple single boards share one or more memories, or that multiple single boards share one or more processors at the same time. device.

For example, for the access network device, the sending module 43 is configured to perform the function of the access network device in any of the embodiments shown in FIG. 5-FIG. 12 .

The embodiment of the present application also provides a communication device, including a processor, a memory, an input interface and an output interface, the input interface is used to receive information from other communication devices other than the first device, and the output interface is used to send information to the first device Other communication devices outside output information, and the processor invokes the computer program stored in the memory to realize any one of the embodiments shown in Fig. 5-Fig. 12 .

The embodiment of the present application also provides a computer-readable storage medium, in which a computer program is stored. When the computer program is run, any one of the embodiments shown in FIGS. 5-12 is realized.

The embodiment of the present application also provides a computer program product, which enables the computer to implement any of the embodiments shown in FIGS. 5-12 when the computer reads and executes the computer program product.

The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present application. In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If the above integrated units are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of software products, and the computer software products are stored in a storage medium Among them, several instructions are included to make a computer device (which may be a personal computer, a cloud server, or a network device, etc.) execute all or part of the steps of the above-mentioned methods in various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disc, etc., which can store program codes. . The above is only a specific embodiment of the application, but the scope of protection of the application is not limited thereto. Any person familiar with the technical field can easily think of various equivalents within the scope of the technology disclosed in the application. Modifications or replacements, these modifications or replacements shall be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

A paging method, characterized in that the method is applied to a terminal device, and the terminal device includes a first Universal Subscriber Identity Module USIM and a second USIM, and the method includes:

Receive a first paging message and a network identifier from the access network device, where the first paging message includes the identifier of the first USIM, and the first paging message is used to indicate the USIM indicated by the identifier of the first USIM being paged, the network identifier is used to identify one or more networks supported by the access network device;

If the first USIM and the second USIM belong to the one or more networks, establishing a first control plane connection between the first USIM and the access network device, and the second USIM It is connected to the second control plane of the access network device; wherein, the first control plane connection is the same as the second control plane connection.
The method according to claim 1, characterized in that the establishing the first control plane connection between the first USIM and the access network device and the first connection between the second USIM and the access network device Two control plane connections, including:

sending a first radio resource control RRC message to the access network device, where the first RRC message is used to request establishment of the first control plane connection, and the first RRC message includes a first NAS request message, a second NAS A request message, a first routing identifier and a second routing identifier, the first NAS request message includes the identifier of the first USIM, the second NAS request message includes the identifier of the second USIM, and the first NAS The request message is used to establish a communication connection between the first USIM and the first access and mobility management function AMF network element, the first AMF network element is an AMF network element serving the first USIM, and the second The NAS request message is used to establish a communication connection between the second USIM and a second AMF network element, the second AMF network element is an AMF network element serving the second USIM, and the first routing identifier includes the following items or multiple items: the identifier of the first USIM, the identifier of the first network, the identifier of the first AMF network element, the identifier of the first USIM is used to indicate the first AMF network element or the first network, the first USIM belongs to the first network; the second routing identifier includes one or more of the following: the identifier of the second USIM, the identifier of the second network, the identifier of the second AMF network element an identifier, where the identifier of the second USIM is used to indicate the second AMF network element or the second network, and the second USIM belongs to the second network;

Receive a second RRC message from the access network device, the second RRC message includes a response message to the first NAS request message and a response message to the second NAS request message, and the second RRC message uses Indicating that the first control plane connection is established successfully.
A paging method, characterized in that the method is applied to a terminal device, and the terminal device includes a first USIM and a second USIM, and the method includes:

receiving a first message from an access network device, where the first message includes the identifier of the second USIM, and the first message is used to indicate that the USIM indicated by the identifier of the second USIM is paged;

Send a second NAS request message and a second routing identifier to the access network device through the first control plane connection between the first USIM and the access network device; the second NAS request message includes the second The identifier of the USIM, the second NAS request message is used for the second USIM to establish a communication connection with a second AMF network element, and the second AMF network element is an AMF network element serving the second USIM; The second routing identifier includes one or more of the following: the identifier of the second USIM, the identifier of the second network, and the identifier of the second AMF network element, and the identifier of the second USIM is used to indicate that the second An AMF network element or the second network, where the second USIM belongs to the second network.
The method according to claim 3, wherein the first message is a fifth RRC message, and the fifth RRC message further includes first indication information, and the first indication information is used to indicate that the second The USIM indicated by the ID of the USIM is paged.
The method according to claim 3 or 4, wherein the method further comprises:

sending a sixth RRC message to the access network device, where the sixth RRC message is used to request establishment of the first control plane connection, where the sixth RRC message includes a first NAS request message, a first routing identifier, and the following One or more items: the identifier of the second USIM, the identifier of the second network, the second USIM belongs to the second network, and the first NAS request message is used for the first USIM and the second USIM An AMF network element establishes a communication connection, the first AMF network element is an AMF network element serving the first USIM; the first routing identifier includes one or more of the following: the identifier of the first USIM, An identifier of the first network, where the identifier of the first USIM is used to indicate the first AMF network element or the first network, and the first USIM belongs to the first network;

Receive a seventh RRC message from the access network device, where the seventh RRC message includes a response message to the first NAS request message, and the seventh RRC message is used to indicate that the first control plane connection is established successfully.
The method according to claim 3 or 4, wherein the method further comprises:

receiving a network identifier from the access network device, where the network identifier is used to identify one or more networks supported by the access network device;

In the case that the first USIM and the second USIM belong to the one or more networks, sending the identity of the second USIM to the first AMF network element and sending the identity of the second USIM to the second AMF network element An identifier of the first USIM; the first AMF network element is an AMF network element serving the first USIM, the first USIM belongs to the first network, and the second USIM belongs to the second network.
The method according to claim 6, further comprising:

sending the identity of the second network and/or second indication information to the first AMF network element, where the second indication information is used to indicate the first USIM and the first control plane of the access network device The connection is the same as the second control plane connection between the second USIM and the access network device;

Sending the identifier of the first network and/or third indication information to the second AMF network element, where the third indication information is used to indicate that the first control plane connection is the same as the second control plane connection.
A paging method, characterized in that the method is applied to a terminal device, and the terminal device includes a first USIM and a second USIM, and the method includes:

Receive a second paging message from the access network device, the second paging message is sent at a paging time, the paging time is determined according to the universal identifier of the terminal device, the second paging message includes the An identifier of the first USIM and an identifier of the second USIM, and the second paging message is used to indicate that the USIM indicated by the identifier of the first USIM and the identifier of the second USIM is paged;

Establishing a first control plane connection between the first USIM and the access network device, and a second control plane connection between the second USIM and the access network device; wherein, the first control plane connection and The second control plane connections are the same.
The method according to claim 8, characterized in that the method further comprises:

Generate the general identification of the terminal equipment, and send the general identification of the terminal equipment to the first AMF network element and the second AMF network element, the first AMF network element is the AMF network element serving the first USIM , the second AMF network element is an AMF network element serving the second USIM; or,

receiving the universal identifier of the terminal device from the first AMF network element, and receiving the universal identifier of the terminal device from the second AMF network element; or,

Receive the universal identifier of the terminal device from the first AMF network element, and send the universal identifier of the terminal device to the second AMF network element, where the universal identifier of the terminal device is the first AMF network element generate; or,

Receive the universal identifier of the terminal device from the second AMF network element, and send the universal identifier of the terminal device to the first AMF network element, where the universal identifier of the terminal device is the second AMF network element generate.
A paging method, characterized in that the method is applied to access network equipment, and the method includes:

Receive a third paging message from the first AMF network element, where the third paging message includes the identifier of the first USIM, and the third paging message is used to indicate that the USIM indicated by the identifier of the first USIM is paged Calling, the first AMF network element is an AMF network element serving the first USIM;

sending a first paging message and a network identifier to the terminal device, where the first paging message includes the identifier of the first USIM, and the first paging message is used to indicate the USIM indicated by the identifier of the first USIM is paged, the network identifier is used to identify one or more networks supported by the access network device, the terminal device includes the first USIM and the second USIM, the first USIM and the second USIM the USIM belongs to said one or more networks;

Establishing a first control plane connection between the first USIM and the access network device, and a second control plane connection between the second USIM and the access network device; wherein, the first control plane connection and The second control plane connections are the same.
The method according to claim 10, characterized in that the establishment of the first control plane connection between the first USIM and the access network device and the first connection between the second USIM and the access network device Two control plane connections, including:

Receive a first RRC message from the terminal device, the first RRC message is used to request establishment of the first control plane connection, and the first RRC message includes a first NAS request message, a second NAS request message, a first a routing identifier and a second routing identifier, the first NAS request message includes the identifier of the first USIM, the second NAS request message includes the identifier of the second USIM, and the first NAS request message is used for the The first USIM establishes a communication connection with the first AMF network element, the second NAS request message is used for the second USIM to establish a communication connection with the second AMF network element, and the second AMF network element serves The AMF network element of the second USIM, the first routing identifier includes one or more of the following: the identifier of the first USIM, the identifier of the first network, the identifier of the first AMF network element, the The identifier of the first USIM is used to indicate the first AMF network element or the first network, and the first USIM belongs to the first network; the second routing identifier includes one or more of the following: the The identifier of the second USIM, the identifier of the second network, and the identifier of the second AMF network element, where the identifier of the second USIM is used to indicate the second AMF network element or the second network, and the second the USIM belongs to said second network;

sending the first NAS request message to the first AMF network element according to the first route identifier;

sending the second NAS request message to the second AMF network element according to the second route identifier;

receiving a response message to the first NAS request message from the first AMF network element;

receiving a response message to the second NAS request message from the second AMF network element;

sending a second RRC message to the terminal device, where the second RRC message includes a response message to the first NAS request message and a response message to the second NAS request message, and the second RRC message is used to indicate that the The first control plane connection is established successfully.
A paging method, characterized in that the method is applied to access network equipment, and the method includes:

Receive the fourth paging message from the second AMF network element, the fourth paging message includes the identity of the second USIM and one or more of the following: the identity of the first USIM, the seventh indication information, the fourth paging message The paging message is used to indicate that the USIM indicated by the identifier of the second USIM is paged, the second AMF network element is an AMF network element serving the second USIM, and the identifier of the first USIM and/or The seventh indication information is used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device;

According to the seventh indication information and/or the identifier of the first USIM, a first message is sent to the terminal device, the first message includes the identifier of the second USIM, and the first message is used to indicate the The USIM indicated by the identity of the second USIM is paged;

Receive a second NAS request message and a second routing identifier from the terminal device; the second NAS request message includes the identifier of the second USIM, and the second NAS request message is used for the second USIM and the second USIM The AMF network element establishes a communication connection; the second routing identifier includes one or more of the following: the identifier of the second USIM, the identifier of the second network, the identifier of the second AMF network element, the second USIM The identifier of is used to indicate the second AMF network element or the second network, and the second USIM belongs to the second network;

sending the second NAS request message to the second AMF network element according to the second route identifier.
The method according to claim 12, wherein the receiving the second NAS request message and the second routing identifier from the terminal device comprises:

receiving the second NAS request message and the second routing identifier from the terminal device through the first control plane connection between the first USIM and the access network device.
The method according to claim 13, further comprising:

Receive a sixth RRC message from the terminal device, where the sixth RRC message is used to request establishment of the first control plane connection, where the sixth RRC message includes a first NAS request message, a first routing identifier, and the following item or more: the identity of the second USIM, the identity of the second network, the second USIM belongs to the second network, the first NAS request message is used for the first USIM and the first AMF A network element establishes a communication connection, the first AMF network element is an AMF network element serving the first USIM; the first routing identifier includes one or more of the following: the identifier of the first USIM, the first An identifier of a network, where the identifier of the first USIM is used to indicate the first AMF network element or the first network, and the first USIM belongs to the first network;

Send the first NAS request message and one or more of the following to the first AMF network element according to the first route identifier: the identifier of the second USIM, the identifier of the second network;

receiving a response message to the first NAS request message from the first AMF network element;

Sending a seventh RRC message to the terminal device, where the seventh RRC message includes a response message to the first NAS request message, and the seventh RRC message is used to indicate that the first control plane connection is established successfully.
The method according to any one of claims 12-14, wherein the sending the first message to the terminal device according to the seventh indication information and/or the identifier of the first USIM includes:

According to the seventh indication information, determine whether there is first context information of other USIMs associated with the identity of the second USIM, where the other USIMs include the first USIM, or, according to the seventh indication information and Determine whether the first context information of the first USIM exists according to the identifier of the first USIM, or, according to the identifier of the first USIM, determine whether the first context information of the first USIM exists, and the first USIM The first context information of a USIM includes one or more of the following: the identifier of the first USIM, the identifier of the first network;

If so, sending the first message to the terminal device through the first control plane connection, the first message is a fifth RRC message, and the fifth RRC message also includes first indication information, the first The indication information is used to indicate that the USIM indicated by the identity of the second USIM is paged;

If not, send the first message, where the first message is a fifth paging message.
A paging method, characterized in that the method is applied to access network equipment, and the method includes:

Receive a sixth paging message from the first AMF network element, where the sixth paging message includes the identifier of the first USIM and the general identifier of the terminal equipment, and the sixth paging message is used to indicate the identifier of the first USIM The indicated USIM is paged, and the first AMF network element is an AMF network element serving the first USIM;

Receive a seventh paging message from the second AMF network element, where the seventh paging message includes an identifier of the second USIM and a general identifier of the terminal device, and the seventh paging message is used to indicate the second USIM The USIM indicated by the identifier is paged, and the second AMF network element is an AMF network element serving the second USIM;

sending a second paging message to the terminal device, where the second paging message is sent at a paging time, the paging time is determined according to the general identifier of the terminal device, and the second paging message includes the first An identifier of the USIM and an identifier of the second USIM, the second paging message is used to indicate that the USIM indicated by the identifier of the first USIM and the identifier of the second USIM is paged;

Establishing a first control plane connection between the first USIM and the access network device, and a second control plane connection between the second USIM and the access network device; wherein, the first control plane connection and The second control plane connections are the same.
The method according to claim 16, characterized in that establishing the first control plane connection between the first USIM and the access network device and the first connection between the second USIM and the access network device Two control plane connections, including:

Receive an eighth RRC message from the terminal device, the eighth RRC message is used to request establishment of the first control plane connection, and the eighth RRC message includes a first NAS request message, a second NAS request message, a first a routing identifier and a second routing identifier, the first NAS request message includes the identifier of the first USIM, the second NAS request message includes the identifier of the second USIM, and the first NAS request message is used for the The first USIM establishes a communication connection with the first AMF network element, the second NAS request message is used for the second USIM to establish a communication connection with the second AMF network element, and the second AMF network element serves The AMF network element of the second USIM, the first routing identifier includes one or more of the following: the identifier of the first USIM, the identifier of the first network, the identifier of the first AMF network element, the The identifier of the first USIM is used to indicate the first AMF network element or the first network, and the first USIM belongs to the first network; the second routing identifier includes one or more of the following: the The identifier of the second USIM, the identifier of the second network, and the identifier of the second AMF network element, where the identifier of the second USIM is used to indicate the second AMF network element or the second network, and the second the USIM belongs to said second network;

sending the first NAS request message to the first AMF network element according to the first route identifier;

sending the second NAS request message to the second AMF network element according to the second route identifier;

receiving a response message to the first NAS request message from the first AMF network element;

receiving a response message to the second NAS request message from the second AMF network element;

sending a ninth RRC message to the terminal device, where the ninth RRC message includes a response message to the first NAS request message and a response message to the second NAS request message, and the ninth RRC message is used to indicate that the The first control plane connection is established successfully.
The method according to claim 16, further comprising:

The sixth paging message further includes eighth indication information, where the eighth indication information is used to indicate that the first control plane connection between the first USIM and the access network device is connected with the second USIM and the The second control plane connection of the access network device is the same;

The seventh paging message further includes ninth indication information, where the ninth indication information is used to indicate that the first control plane connection is the same as the second control plane connection;

The sending the second paging message to the terminal device includes:

If it is determined according to the eighth indication that there is no first context information of other USIMs associated with the identity of the first USIM, and it is determined according to the ninth indication that there is no context information associated with the identity of the second USIM other USIM first context information, then send the second paging message to the terminal device.
The method of claim 18, wherein,

The sixth paging message further includes the identifier of the second USIM, and the seventh paging message further includes the identifier of the first USIM;

The sending the second paging message to the terminal device includes:

If it is determined according to the eighth indication information and the identity of the second USIM that there is no first context information of the second USIM associated with the identity of the first USIM, and according to the ninth indication information and the identity of the second USIM, If the identity of the first USIM determines that there is no first context information of the first USIM associated with the identity of the second USIM, then the second paging message is sent to the terminal device.
A paging method, characterized in that the method is applied to a second AMF network element, and the method includes:

Sending a fourth paging message to the access network device, where the fourth paging message includes the identity of the second USIM and one or more of the following: the identity of the first USIM, seventh indication information, the fourth paging message The message is used to indicate that the USIM indicated by the identity of the second USIM is paged, and the identity of the first USIM and/or the seventh indication information are used to indicate that the first USIM and the access network device The first control plane connection is the same as the second control plane connection between the second USIM and the access network device, and the second AMF network element is an AMF network element serving the second USIM;

Receive a second NAS request message from the access network device, the second NAS request message includes the identifier of the second USIM, and the second NAS request message is used for the second USIM and the second AMF network element Establish a communication connection.
The method according to claim 20, further comprising:

Receive the identifier of the first USIM and/or third indication information from the terminal device, where the third indication information is used to indicate that the first control plane connection between the first USIM and the access network device is connected to the first USIM The second USIM and the second control plane connection of the access network device are the same.
A terminal device, characterized in that the terminal device includes a first USIM and a second USIM, and the terminal device includes a transceiver module and a processing module,

The transceiver module is configured to receive a first paging message and a network identifier from an access network device, the first paging message includes an identifier of a first USIM, and the first paging message is used to indicate that the first USIM The USIM indicated by the USIM identifier is paged, and the network identifier is used to identify one or more networks supported by the access network device;

The processing module is configured to establish a first control plane connection between the first USIM and the access network device when the first USIM and the second USIM belong to the one or more networks , and a second control plane connection between the second USIM and the access network device; wherein, the first control plane connection is the same as the second control plane connection.
A terminal device, characterized in that the terminal device includes a first USIM and a second USIM, the terminal device includes a transceiver module, and the transceiver module is used for

receiving a first message from an access network device, where the first message includes the identifier of the second USIM, and the first message is used to indicate that the USIM indicated by the identifier of the second USIM is paged;

Send a second NAS request message and a second routing identifier to the access network device through the first control plane connection between the first USIM and the access network device; the second NAS request message includes the second The identifier of the USIM, the second NAS request message is used for the second USIM to establish a communication connection with a second AMF network element, and the second AMF network element is an AMF network element serving the second USIM; The second routing identifier includes one or more of the following: the identifier of the second USIM, the identifier of the second network, and the identifier of the second AMF network element, and the identifier of the second USIM is used to indicate that the second An AMF network element or the second network, where the second USIM belongs to the second network.
A terminal device, characterized in that the terminal device includes a first USIM and a second USIM, and the terminal device includes a transceiver module and a processing module,

The transceiver module is configured to receive a second paging message from an access network device, the second paging message is sent at a paging time, the paging time is determined according to the general identifier of the terminal device, and the second paging message is sent at a paging time. The second paging message includes the identity of the first USIM and the identity of the second USIM, and the second paging message is used to indicate the USIM indicated by the identity of the first USIM and the identity of the second USIM be paged;

The processing module is configured to establish a first control plane connection between the first USIM and the access network device, and a second control plane connection between the second USIM and the access network device; wherein the The first control plane connection is the same as the second control plane connection.
An access network device, characterized in that the access network device includes a transceiver module and a processing module,

The transceiver module is configured to receive a third paging message from the first AMF network element, the third paging message includes the identifier of the first USIM, and the third paging message is used to indicate the identity of the first USIM The indicated USIM is paged, and the first AMF network element is an AMF network element serving the first USIM;

The transceiver module is configured to send a first paging message and a network identifier to the terminal device, the first paging message includes the identifier of the first USIM, and the first paging message is used to indicate that the first USIM The USIM indicated by the USIM identifier is paged, the network identifier is used to identify one or more networks supported by the access network device, the terminal device includes the first USIM and the second USIM, the second USIM a USIM and said second USIM belong to said one or more networks;

The processing module is configured to establish a first control plane connection between the first USIM and the access network device, and a second control plane connection between the second USIM and the access network device; wherein the The first control plane connection is the same as the second control plane connection.
An access network device, characterized in that the access network device includes a transceiver module, and the transceiver module is used for

Receive the fourth paging message from the second AMF network element, the fourth paging message includes the identity of the second USIM and one or more of the following: the identity of the first USIM, the seventh indication information, the fourth paging message The paging message is used to indicate that the USIM indicated by the identifier of the second USIM is paged, the second AMF network element is an AMF network element serving the second USIM, and the identifier of the first USIM and/or The seventh indication information is used to indicate that the first control plane connection between the first USIM and the access network device is the same as the second control plane connection between the second USIM and the access network device;

According to the seventh indication information and/or the identifier of the first USIM, a first message is sent to the terminal device, the first message includes the identifier of the second USIM, and the first message is used to indicate the The USIM indicated by the identity of the second USIM is paged;

Receive a second NAS request message and a second routing identifier from the terminal device; the second NAS request message includes the identifier of the second USIM, and the second NAS request message is used for the second USIM and the second USIM The AMF network element establishes a communication connection; the second routing identifier includes one or more of the following: the identifier of the second USIM, the identifier of the second network, the identifier of the second AMF network element, the second USIM The identifier of is used to indicate the second AMF network element or the second network, and the second USIM belongs to the second network;

sending the second NAS request message to the second AMF network element according to the second route identifier.
An access network device, characterized in that the access network device includes a transceiver module and a processing module,

The transceiver module is configured to receive a sixth paging message from the first AMF network element, the sixth paging message includes the identifier of the first USIM and the general identifier of the terminal equipment, and the sixth paging message is used to indicate The USIM indicated by the identifier of the first USIM is paged, and the first AMF network element is an AMF network element serving the first USIM;

The transceiver module is configured to receive a seventh paging message from the second AMF network element, the seventh paging message includes the identifier of the second USIM and the general identifier of the terminal equipment, and the seventh paging message uses When the USIM indicated by the identifier indicating the second USIM is paged, the second AMF network element is an AMF network element serving the second USIM;

The transceiver module is configured to send a second paging message to the terminal device, the second paging message is sent at a paging time, the paging time is determined according to the general identifier of the terminal device, and the second paging message is sent at a paging time. The paging message includes the identifier of the first USIM and the identifier of the second USIM, and the second paging message is used to indicate that the USIM indicated by the identifier of the first USIM and the identifier of the second USIM is paged call;

The processing module is configured to establish a first control plane connection between the first USIM and the access network device, and a second control plane connection between the second USIM and the access network device; wherein the The first control plane connection is the same as the second control plane connection.
A second AMF network element, characterized in that, the second AMF network element includes a transceiver module, and the transceiver module is used for

Sending a fourth paging message to the access network device, where the fourth paging message includes the identity of the second USIM and one or more of the following: the identity of the first USIM, seventh indication information, the fourth paging message The message is used to indicate that the USIM indicated by the identity of the second USIM is paged, and the identity of the first USIM and/or the seventh indication information are used to indicate that the first USIM and the access network device The first control plane connection is the same as the second control plane connection between the second USIM and the access network device, and the second AMF network element is an AMF network element serving the second USIM;

Receive a second NAS request message from the access network device, the second NAS request message includes the identifier of the second USIM, and the second NAS request message is used for the second USIM and the second AMF network element Establish a communication connection.
A communication device, characterized by comprising a processor and a memory, and the processor invokes a computer program stored in the memory to implement the method according to any one of claims 1-21.
A computer-readable storage medium, wherein a computer program is stored in the computer-readable storage medium, and when the computer program is executed, the method according to any one of claims 1-21 is realized.