CN114916063A

CN114916063A - Method for sending and receiving paging message, network equipment and terminal

Info

Publication number: CN114916063A
Application number: CN202110180835.XA
Authority: CN
Inventors: 旷婧华; 陈卓
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2021-02-09
Filing date: 2021-02-09
Publication date: 2022-08-16

Abstract

The invention provides a method for sending and receiving paging messages, network equipment and a terminal, wherein the method comprises the following steps: when a user terminal is paged, when a tracking area to which the user terminal belongs has cells of a plurality of frequency points, a paging message for the user terminal is sent through the cell of the attributive frequency point or the attributive frequency point of an attributive operator of the user terminal. The scheme of the invention can ensure that when the user terminal is paged in one tracking under the shared network, the called user is preferentially paged in the cell which takes the home PLMN of the user terminal as the home PLMN, and the paging time is shortened and the paging accuracy is improved on the premise of minimizing the issuing of paging air interface messages.

Description

Method for sending and receiving paging message, network equipment and terminal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method for sending and receiving a paging message, a network device, and a terminal.

Background

When a core network is connected with multiple cells of multiple base stations with one or multiple different frequency points, in order to reduce the location area update process and reduce signaling overhead that occur when a terminal moves, the same location Tracking Area (TA) is usually configured for the base station cells with multiple frequency points. When the terminal is in an idle state, paging of the core network to the terminal needs to be initiated under a base station with multiple frequency points of one TA.

In a wireless network shared network, different frequency points used by a plurality of base stations connected under a core network may belong to different operators. The operator of a frequency point belongs to may be described as that the operator has network operation management authority for the wireless network frequency point, and a user of the operator generally preferentially resides in the frequency point and preferentially initiates a service at the frequency point, and wireless service traffic generated after service connection is initiated in a cell of the frequency point does not need to pay wireless traffic settlement cost to other operators.

Under a shared network, core networks of multiple operators are simultaneously connected with base stations of one or more frequency points, and when the base stations of multiple frequency points are connected, the attribution operators of each frequency point may be the same or different. In order to reduce the location area update process occurring when the terminal moves, the operator generally configures the same location Tracking Area (TA) for the base stations of multiple frequency points. When the core network needs to page the user, paging messages need to be sent on multiple frequency points where multiple base stations connected under one TA of the core network are located.

The problem in the prior art is that multiple frequency points of a shared network need to send paging air interface messages of the same called user, air interface resources of multiple frequency point cells are occupied, and paging efficiency is low.

Disclosure of Invention

The technical problem to be solved by the present invention is how to provide a method for sending and receiving paging messages, a network device and a terminal, which can ensure that when a user terminal is paged in a tracking area under a shared network, the user terminal is preferentially paged in a cell (frequency point) which takes the home PLMN of the user terminal as the home PLMN, and the paging time is reduced and the paging accuracy is improved on the premise of minimizing the issuing of paging air interface messages.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a method for sending paging message is applied to network equipment, and comprises the following steps:

when a user terminal is paged, when a tracking area to which the user terminal belongs has cells of a plurality of frequency points, a paging message for the user terminal is sent through the cell of the attributive frequency point or the attributive frequency point of an attributive operator of the user terminal.

Optionally, the sending the paging message to the user terminal through the cell of the home frequency point or the home frequency point of the home operator of the user terminal includes:

and the core network sends the paging message to a base station in which a cell taking the home Public Land Mobile Network (PLMN) of the user terminal as the home PLMN is located based on the PLMN of the user terminal and/or a tracking area to which the user terminal belongs.

Optionally, the sending, by the core network, the paging message to the base station where the cell using the home public land mobile network PLMN of the user terminal as a home PLMN is located based on the home public land mobile network PLMN of the user terminal and/or the tracking area to which the user terminal belongs includes:

when a downlink service arrives in a core network supporting a first PLMN, inquiring a tracking area to which a user terminal belongs according to the context of the user terminal;

and the core network supporting the first PLMN sends a paging message to a base station under the tracking area, wherein the base station is located by a cell of the first PLMN serving as a home PLMN.

Optionally, the method for sending a paging message further includes:

and after receiving the paging message, the base station sends the paging message to the user terminal through a cell or an attribution frequency point of an attribution operator of the user terminal.

Optionally, the cell under the tracking area includes at least one of the following:

the first type cell is a cell only supporting a single PLMN, and the cell is the same as the PLMN supported by a core network;

a second type of cell, wherein the second type of cell is a cell supporting multiple PLMNs, a PLMN list supported by the cell includes PLMNs supported by a core network, and a PLMN of a home operator of a frequency point adopted by the cell is the same as the PLMN supported by the core network;

and the third type of cell supports cells with multiple PLMNs, a PLMN list supported by the cell comprises PLMNs supported by the core network, and the PLMN of the frequency point used by the cell, which belongs to the operator, is different from the PLMN supported by the core network.

Optionally, the method for sending, by a core network supporting a first PLMN, a paging message to a base station in which a cell of the first PLMN is located in a tracking area includes:

and the core network supporting the first PLMN sends a paging message to the base stations of the first type of cell and the second type of cell under the tracking area.

Optionally, after the core network supporting the first PLMN sends the paging message to the base stations in the tracking area to which the first type of cell and the second type of cell belong, the method further includes:

and the core network supporting the first PLMN sends a paging message to a base station which the third type of cell belongs to in the tracking area.

Optionally, the method for sending a paging message further includes:

and the core network acquires a PLMN list supported by the cells under the base station and PLMN information of home operators of the cells through establishing an interface with the base station.

Optionally, the sending, by the core network, a paging message to a base station where a cell using the home PLMN of the user terminal as a home PLMN is located based on the home PLMN of the user terminal and/or a tracking area to which the user terminal belongs includes:

when a downlink service arrives in a core network supporting multiple PLMNs, inquiring the home PLMN of the user terminal and a tracking area to which the user terminal belongs according to the context of the user terminal;

and the core network supporting multiple PLMNs sends a paging message to a base station under the tracking area by taking the home PLMN of the user terminal as the cell of the home PLMN.

a fourth type of cell, which is a cell only supporting a single PLMN and is the same as the home PLMN of the user terminal;

a fifth type of cell, where the fifth type of cell is a cell supporting multiple PLMNs, a PLMN list supported by the cell includes a home PLMN of the user terminal, and a PLMN of a home operator of a frequency point used by the cell is the same as the home PLMN of the user terminal;

and a sixth type of cell, wherein the sixth type of cell supports cells with multiple PLMNs, a PLMN list supported by the cell includes a home PLMN of the user terminal, and a PLMN of a home operator of a frequency point used by the cell is different from the home PLMN of the user terminal.

Optionally, the sending, by the core network supporting multiple PLMNs, a paging message to the base station in which the cell of the home PLMN of the user terminal is located in the tracking area by using the home PLMN of the user terminal includes:

and the core network supporting multiple PLMNs sends paging messages to base stations of the fourth type of cells and the fifth type of cells under the tracking area.

Optionally, after the core network supporting multiple PLMNs sends the paging message to the base station in the tracking area to which the fourth cell and the fifth cell belong, the method further includes:

and the core network supporting multiple PLMNs sends paging messages to the base stations of the six types of cells under the tracking area.

when a downlink service arrives, the core network inquires the home PLMN of the user terminal and the tracking area to which the user terminal belongs according to the context of the user terminal;

and the core network sends paging messages to all base stations under the tracking area, the base stations compare the home PLMN of the user terminal with the home PLMN of each cell under the base stations, and the base stations send the paging messages to the cells of which the home PLMNs are the same as the home PLMN of the user terminal, or the base stations send the paging messages through the home frequency points of the home operators of the user terminal.

Optionally, the process of the base station obtaining the home PLMN of the user terminal includes:

when the user terminal is in an idle state and the core network sends downlink paging messages to all base stations in the tracking area, the base stations acquire the downlink paging messages through the context of the user terminal sent by the core network; or alternatively

Storing the context of the user terminal in the base station when the user terminal is in an inactive state.

Optionally, the home PLMN of each cell in the base station may be preconfigured; or, for a base station in which the central unit CU and the distribution unit DU are separated, each CU may connect to one or more different DUs with different frequency points, and the DUs will report the home PLMN of the frequency point of each DU to the CU in the process of establishing the E1 interface.

Optionally, sending a paging message to a cell whose home PLMN is the same as the home PLMN of the user equipment includes:

sending paging messages to the fourth type cells and the fifth type cells;

the fourth type of cell is a cell only supporting a single PLMN, and the cell is the same as the home PLMN of the user terminal;

the fifth type of cell is a cell supporting multiple PLMNs, a PLMN list supported by the cell comprises the home PLMN of the user terminal, and the PLMN of the home operator of the frequency point adopted by the cell is the same as the home PLMN of the user terminal;

optionally, after sending the paging message to the fourth cell and the fifth cell, the method further includes:

sending a paging message to the six types of cells;

the sixth type of cell supports cells with multiple PLMNs, a PLMN list supported by the cell includes a home PLMN of the user terminal, and a PLMN of a home operator of a frequency point used by the cell is different from the home PLMN of the user terminal.

The embodiment of the invention also provides a device for sending the paging message, which is applied to network equipment and comprises the following steps:

and the receiving and sending module is used for sending a paging message to the user terminal through the cell of the attributive frequency point or the attributive frequency point of the attributive operator of the user terminal when the tracking area of the user terminal is provided with the cells of a plurality of frequency points.

An embodiment of the present invention further provides a network device, including:

and the transceiver is used for sending a paging message to the user terminal through the cell of the attributive frequency point or the attributive frequency point of the attributive operator of the user terminal when the tracking area of the user terminal is provided with the cells of a plurality of frequency points.

The embodiment of the invention also provides a method for receiving the paging message, which is applied to the user terminal and comprises the following steps:

and receiving a paging message sent by a network side through a cell of an attribution frequency point or an attribution frequency point of an attribution operator of a user terminal, wherein the tracking area to which the user terminal belongs is provided with cells of a plurality of frequency points.

The embodiment of the invention also provides a device for receiving the paging message, which is applied to a user terminal and comprises the following components:

the receiving and sending module is used for receiving the paging message sent by the network side through the cell of the attribution frequency point or the attribution frequency point of the attribution operator of the user terminal, and the tracking area of the user terminal is provided with cells of a plurality of frequency points.

An embodiment of the present invention further provides a user terminal, including:

the transceiver is used for receiving the paging message sent by a network side through a cell of an attribution frequency point of an attribution operator of a user terminal or an attribution frequency point, and the tracking area to which the user terminal belongs is provided with cells of a plurality of frequency points.

An embodiment of the present invention further provides a communication device, including: a processor, a memory storing a computer program which, when executed by the processor, performs the method as described above.

Embodiments of the present invention also provide a computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the method as described above.

The scheme of the invention at least comprises the following beneficial effects:

when a user terminal is paged, if a tracking area to which the user terminal belongs has cells with a plurality of frequency points, the paging message to the user terminal is sent through the cell of the home frequency point or the home frequency point of the home operator of the user terminal, so that when a user is paged in a tracking area under a shared network, the user terminal is preferentially paged in the cell (frequency point) which takes the home PLMN of the user terminal as the home PLMN, the paging time is shortened and the paging accuracy is improved on the premise of minimizing the transmission of paging air interface messages.

Drawings

Fig. 1 is a flowchart illustrating a method for sending a paging message according to an embodiment of the present invention;

fig. 2 is a block diagram of a sending apparatus of a paging message according to an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

As shown in fig. 1, an embodiment of the present invention provides a method for sending a paging message, which is applied to a network device, and includes:

step 11, when the user terminal is paged, when the tracking area to which the user terminal belongs has cells of a plurality of frequency points, sending a paging message to the user terminal through the cell of the attributive frequency point or the attributive frequency point of the attributive operator of the user terminal.

In this embodiment, the home frequency point of the operator means that the first PLMN in the PLMN list broadcasted by the cell of the frequency point is the PLMN of the operator, that is, the home PLMN of the frequency point is the PLMN of the operator. In the scheme of this embodiment, when the user terminal is paged, when there are cells with multiple frequency points in the tracking area to which the user terminal belongs, the paging message to the user terminal is sent through the cell with the frequency point or the frequency point to which the user terminal belongs, so as to ensure that when a user is paged in a tracking area under a shared network, the user terminal is preferentially paged in the cell (frequency point) to which the PLMN to which the user terminal belongs is the PLMN, and on the premise of minimizing the transmission of paging air interface messages, the paging time is reduced and the paging accuracy is improved.

In an alternative embodiment of the present invention, step 11 may include:

step 111, the core network sends the paging message to a base station where a cell using the home public land mobile network PLMN of the user terminal as a home PLMN is located, based on the home PLMN of the user terminal and/or a tracking area to which the user terminal belongs. Here, there are multiple cells under one frequency point, the home PLMN of a cell is the first PLMN in the PLMN list broadcasted by the cell, and the home PLMN of a frequency point is the first PLMN in the PLMN list broadcasted by the cell of the frequency point.

In an optional embodiment of the present invention, in step 111, the sending, by the core network, a paging message to a base station where a cell using a home public land mobile network PLMN of the user terminal as a home PLMN is located based on the home PLMN of the user terminal and/or a tracking area to which the user terminal belongs, includes:

when a downlink service arrives, a core network supporting a first PLMN inquires a tracking area to which a user terminal belongs according to the context of the user terminal;

Here, the tracking sub-cell includes at least one of:

the third type of cell supports cells of multiple PLMNs, a PLMN list supported by the cell includes PLMNs supported by the core network, and a PLMN of a home operator of a frequency point adopted by the cell is different from the PLMNs supported by the core network.

In an optional embodiment of the present invention, a core network supporting a first PLMN sends a paging message to a base station in which a cell of the first PLMN as a home PLMN is located in the tracking area, where the method includes:

Further, after sending the paging message to the base station in the tracking area to which the first-type cell and the second-type cell belong, the method may further include:

In an optional embodiment of the present invention, the sending method of the paging message may further include:

the core network acquires a PLMN list supported by cells under a base station and PLMN information of home operators of the cells through establishing an interface with the base station.

A specific implementation example 1: the method for supporting the core network of the single PLMN to decide the priority paging of the cell of the user terminal comprises the following steps:

step 1: when a downlink service arrives, a core network supporting a single PLMN (i.e. the first PLMN) queries a tracking area to which a user terminal belongs according to the context of the user terminal. Since the core network only supports a single PLMN at this time, it can directly decide to page in the tracking area to which the user of the PLMN belongs.

The cells under the tracking area may be of 3 types:

(1) a cell supporting only a single PLMN and the cell is the same as the PLMN supported by the core network;

(2) the method comprises the steps that a cell supporting multiple PLMNs is provided, a PLMN list supported by a core network comprises PLMNs supported by the core network, and the PLMN of a home operator of a frequency point adopted by the cell is the same as the PLMN supported by the core network;

(3) the cell supports multiple PLMNs, the supported PLMN list comprises PLMNs supported by a core network, and the PLMN of a home operator of a frequency point adopted by the cell is different from the PLMN supported by the core network.

And 2, step: the core network preferentially sends paging messages to base stations to which the (1) th type cells and the (2) th type cells belong under the tracking area.

And step 3: if the core network receives the paging response (such as a service connection request) of the user terminal, the paging is completed; otherwise, the foregoing step 2 may be repeated continuously, that is, the paging message is sent to the base station to which the type (1) and type (2) cells under the tracking area belong. This process of repeating may be until paging is complete or paging fails.

And 4, step 4: in step 2 or 3, after the core network preferentially sends the paging message to the base stations to which the type (1) and type (2) cells belong in the tracking area, the core network may further continue to send the paging message to the base station to which the type (3) cell belongs in the tracking area.

For step 1, when the NG interface is established between the core network and the base station, the base station needs to inform the core network of PLMN information of the home operator of each cell under the base station, in addition to informing the PLMN list supported by the cell under the core network.

The method for the base station to inform the core network of the home operator PLMN information of its cell may be: the base station informs the core network through an interface message with the core network.

The specific embodiment can be as follows: in the NG interface message (for example, NG Setup or NG Configuration Update message), the home operator identifier is added to the home PLMN of the cell (or frequency point, which is certainly in different cells because of different frequency points) in the PLMN list broadcasted by the base station, as shown in the following table. Other messages or methods that serve similar functions are also possible.

For the step 2, the core network compares the PLMN supported by the core network with the home PLMN of the base station cell with the NG interface, and preferentially issues the paging message to the base station cell with the home PLMN of the base station cell being the same as the PLMN supported by the core network.

Correspondingly, in the step 4, the core network issues the paging message to the base station cell with the home PLMN of the base station cell different from the PLMN supported by the core network.

In an optional embodiment of the present invention, in step 111, the sending, by the core network, the paging message to the base station where the cell using the home PLMN of the user equipment as the home PLMN is located based on the home PLMN of the user equipment and/or the tracking area to which the user equipment belongs, includes:

when a downlink service arrives, a core network supporting multiple PLMNs inquires the home PLMN of the user terminal and a tracking area to which the user terminal belongs according to the context of the user terminal;

Here, the tracking cell includes at least one of:

the sixth type of cell supports cells with multiple PLMNs, a PLMN list supported by the cell includes a home PLMN of the user terminal, and a PLMN of a home operator of a frequency point adopted by the cell is different from the home PLMN of the user terminal.

In an optional embodiment of the present invention, the sending, by a core network supporting multiple PLMNs, a paging message to a base station in which a cell of a home PLMN of the user terminal is located in the tracking area by using the home PLMN of the user terminal includes:

Further, after sending the paging message to the base station in the tracking area to which the fourth cell and the fifth cell belong, the method may further include:

A specific implementation example 2: the method for determining the priority paging of the user cell by the core network supporting multiple PLMNs comprises the following steps:

step 1: when the user registers, the core network acquires the home PLMN of the user terminal and stores the home PLMN in the context of the user terminal.

Step 2: when the business of the core network supporting multiple PLMNs arrives, the home PLMN of the user terminal and the tracking area to which the user terminal belongs are inquired according to the context of the user terminal.

The cells under the tracking area of the PLMN may be of 3 types:

(1) only supporting a cell of a single PLMN, wherein the cell is the same as the home PLMN of the user terminal;

(2) the method comprises the steps that a cell supporting multiple PLMNs is provided, a supported PLMN list comprises a home PLMN of a user terminal, and a PLMN of a home operator of a frequency point adopted by the cell is the same as the home PLMN of the user terminal;

(3) the method comprises the steps that a cell supporting multiple PLMNs, a PLMN list supported by the cell comprises a home PLMN of a user terminal, and the PLMN of a home operator of a frequency point adopted by the cell is different from the home PLMN of the user terminal.

And step 3: the core network sends paging information to the base stations of the type (1) and type (2) cells under the tracking area.

And 4, step 4: if the core network receives the paging response (such as a service connection request) of the user terminal, the paging is completed; otherwise, the foregoing step 2 may be repeated continuously, that is, the paging message is sent to the base station to which the type (1) and type (2) cells under the tracking area belong. This process of repeating may be until paging is complete or paging fails.

And 5: in step 2 or 3, after the core network preferentially sends the paging message to the base stations to which the type (1) and type (2) cells belong in the tracking area, the core network may further continue to send the paging message to the base station to which the type (3) cell belongs in the tracking area.

For the step 1, the user reports the HPLMN (home PLMN) stored in the card to the AMF (mobile management function) during registration, and the AMF stores the HPLMN in the UE context; or adding HPLMN of new user in user subscription data of HSS (home subscriber server), and extracting from AMF to HSS as required.

And for the step 3, the core network compares the home PLMN of the user terminal with the home PLMN of the base station with the NG interface, and sends the paging message to the base station cell with the home PLMN of the base station being the same as the home PLMN of the user terminal.

Correspondingly, in the step 5, the core network issues the paging message to the base station cells with different home PLMNs of the base station and the user terminal.

In an optional embodiment of the present invention, in step 111, the sending, by the core network, a paging message to a base station where a cell using a home PLMN of the user terminal as a home PLMN is located based on the home PLMN of the user terminal and/or a tracking area to which the user terminal belongs, includes:

when the downlink service arrives, the core network inquires the home PLMN of the user terminal and the tracking area to which the user terminal belongs according to the context of the user terminal;

and the core network sends paging messages to all base stations under the tracking area, the base stations compare the home PLMN of the called user terminal with the home PLMN of each cell under the base stations, and the base stations send the paging messages to the cells with the home PLMNs being the same as the home PLMN of the user terminal or the base stations through the home frequency points of the home operators of the user terminal.

In an optional embodiment of the present invention, the process of the base station obtaining the home PLMN of the user equipment includes:

when the user terminal is in an idle state and the core network sends downlink paging messages to all base stations in the tracking area, the base stations acquire the downlink paging messages through the context of the user terminal sent by the core network; or,

In an optional embodiment of the present invention, the home PLMN of each cell in the base station may be preconfigured; or, for a base station in which the central unit CU and the distribution unit DU are separated, each CU may connect to one or more different DUs with different frequency points, and the DUs will report the home PLMN of the frequency point of each DU to the CU in the process of establishing the E1 interface.

In an optional embodiment of the present invention, sending a paging message to a cell where a home PLMN of a user equipment is the same as a home PLMN of the user equipment includes:

sending paging messages to the fourth type cell and the fifth type cell;

in an optional embodiment of the present invention, after sending the paging message to the fourth type cell and the fifth type cell, the method may further include: sending a paging message to the six types of cells; the sixth type of cell supports cells with multiple PLMNs, a PLMN list supported by the cell includes a home PLMN of the user terminal, and a PLMN of a home operator of a frequency point used by the cell is different from the home PLMN of the user terminal.

A specific implementation example 3: the base station decides to preferentially page the cell of the user, and comprises the following steps:

step 1: when the user registers, the core network acquires the home PLMN of the user terminal and stores the PLMN in the context of the user.

Step 2: when the business of the next business arrives, the core network inquires the tracking area to which the PLMN of the user terminal belongs and the called user belong according to the context of the user terminal, and sends the downlink paging message to all base stations under the tracking area.

And step 3: after receiving the paging message, the base station compares the home PLMN of the user terminal with the home PLMN of each cell under the base station, and sends the paging message to the cell with the home PLMN same as the home PLMN of the user terminal.

For the step 3, the method for the base station to obtain the home PLMN of the user terminal includes: when the user terminal is in an idle state and the core network sends downlink paging messages to all base stations in the tracking area, the home PLMN of the user terminal in the UE context can also be synchronously sent to the base stations; when the user is in inactive state, the context of the UE will be stored in the base station or other base stations (in this case, it can be obtained through inter-base station message flow).

For the step 3, the home PLMN of each cell under the base station may be a pre-configured attribute, and each cell may be configured with a home PLMN in advance according to the frequency points supported by each cell; for the base station with CU and DU separated, each CU may connect to one or more different DUs with different frequency points, and at this time, the DU reports the home PLMN of the frequency point of each DU to the CU in the process of establishing the E1 interface.

And 4, step 4: if receiving the paging response (such as service connection request) of the user terminal, the paging is completed; otherwise, the foregoing step 3 may be repeated continuously, that is, the paging message is sent to the base station to which the type (1) and type (2) cells under the tracking area belong. This process of repeating may be until paging is complete or paging fails.

And 5: in step 3 or 4, after the base station preferentially sends the paging message to the base stations to which the type (1) and type (2) cells belong under the tracking area, the base station may further continue to send the paging message to the base station to which the type (3) cell belongs under the tracking area.

The embodiment of the invention ensures that when the user is paged in a tracking area under the shared network, the user terminal is preferentially paged in the cell (frequency point) which takes the home PLMN of the user terminal as the home PLMN, and the paging time is shortened and the paging accuracy is improved on the premise of minimizing the transmission of the paging air interface message.

As shown in fig. 2, an embodiment of the present invention further provides a device 20 for sending a paging message, which is applied to a network device, and includes:

the transceiver module 21 is configured to, when a user terminal is paged, send a paging message to the user terminal through a cell of an attribution frequency point or an attribution frequency point of an attribution operator of the user terminal when the tracking area to which the user terminal belongs has cells of multiple frequency points.

when a downlink service arrives, a core network supporting a first PLMN inquires a tracking area to which the user terminal belongs according to the context of the user terminal;

and the core network supporting the first PLMN sends a paging message to a base station under the tracking area, wherein the base station is located by a cell of which the first PLMN serves as a home PLMN.

Optionally, after receiving the paging message, the base station sends the paging message to the user terminal through a cell or an affiliation frequency point of an affiliation operator of the user terminal.

Optionally, after the core network supporting the first PLMN sends the paging message to the base station in the tracking area to which the first-type cell and the second-type cell belong, the method further includes:

Optionally, the core network acquires, through establishing an interface with the base station, a PLMN list supported by a cell in the base station and PLMN information of a home operator of each cell.

Optionally, the sending, by the core network, the paging message to the base station where the cell using the home PLMN of the user terminal as the home PLMN is located based on the home PLMN of the user terminal and/or the tracking area to which the user terminal belongs includes:

when the downlink service arrives, a core network supporting multiple PLMNs inquires the home PLMN of the user terminal and the tracking area to which the user terminal belongs according to the context of the user terminal;

Optionally, the tracking cell includes at least one of the following:

a fourth type cell, which is a cell only supporting a single PLMN and is the same as the home PLMN of the user terminal;

when the user terminal is in an idle state and a core network sends downlink paging messages to all base stations in the tracking area, the base stations acquire the context of the user terminal issued by the core network; or

Optionally, sending a paging message to a cell where the home PLMN is the same as the home PLMN of the user equipment, where the sending includes:

sending paging messages to the fourth type cell and the fifth type cell;

optionally, after sending the paging message to the fourth type cell and the fifth type cell, the method further includes:

sending a paging message to the six types of cells;

It should be noted that the apparatus is an apparatus corresponding to the method, and all implementation manners in the method embodiments are applicable to the embodiment of the apparatus, and the same technical effects can be achieved. The device may further include a processing module 22, configured to process data received and transmitted by the transceiver module 21.

the transceiver is used for sending the paging message of the user terminal in the cell of the attributive frequency point of the attributive operator of the called user terminal when a tracking area TA under a core network has a plurality of frequency points, and the user terminal is in the tracking area.

Optionally, the sending, by the core network, a paging message to a base station where a cell using a home public land mobile network PLMN of the user terminal as a home PLMN is located based on the home PLMN of the user terminal and/or a tracking area to which the user terminal belongs includes:

and the core network supporting the first PLMN sends a paging message to a base station under the tracking area and to which the third type of cell belongs.

Optionally, the core network acquires, through establishing an interface with the base station, a PLMN list supported by a cell under the base station and PLMN information of a home operator of each cell.

and the core network sends paging messages to all base stations under the tracking area, the base stations compare the home PLMN of the user terminal with the home PLMN of each cell under the base stations, and the base stations send the paging messages to the cells with the home PLMNs identical to the home PLMN of the user terminal or the base stations through the home frequency points of home operators of the user terminal.

sending paging messages to the fourth type cells and the fifth type cells;

the fifth type of cell is a cell supporting multiple PLMNs, a PLMN list supported by the cell includes a home PLMN of the user terminal, and a PLMN of a home operator of a frequency point used by the cell is the same as the home PLMN of the user terminal;

sending a paging message to the six types of cells;

It should be noted that the network device is a network device corresponding to the method, and all implementation manners in the method embodiment are applicable to the embodiment of the network device, and the same technical effect can be achieved.

All the implementation modes related to the user terminal side in the method of the network side are applicable to the method of the terminal side, and the same technical effect can be achieved.

The embodiment of the invention also provides a device for receiving the paging message, which is applied to the user terminal and comprises the following components:

The device is a device corresponding to the method, and all implementation manners in the method embodiment are applicable to the device embodiment, so that the same technical effect can be achieved.

The user terminal is a user terminal corresponding to the method, and all implementation manners in the embodiment of the method are applicable to the embodiment of the user terminal, and the same technical effect can be achieved. An embodiment of the present invention further provides a communication device, including: a processor, a memory storing a computer program which, when executed by the processor, performs the method as described above. All the implementation manners in the above method embodiment are applicable to this embodiment, and the same technical effect can be achieved.

Embodiments of the present invention also provide a computer-readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method as described above. All the implementation manners in the above method embodiment are applicable to this embodiment, and the same technical effect can be achieved.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the technical solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention or a part thereof which substantially contributes to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

Furthermore, it should be noted that in the apparatus and method of the present invention, it is obvious that each component or each step may be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of performing the series of processes described above may naturally be performed chronologically in the order described, but need not necessarily be performed chronologically, and some steps may be performed in parallel or independently of each other. It will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the present invention may be implemented in any computing device (including processor, storage medium, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, which can be implemented by those skilled in the art using their basic programming skills after reading the description of the present invention.

Thus, the objects of the invention may also be achieved by running a program or a set of programs on any computing device. The computing device may be a well-known general purpose device. The object of the invention is thus also achieved solely by providing a program product containing program code for implementing the method or device. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is to be understood that the storage medium may be any known storage medium or any storage medium developed in the future. It is further noted that in the apparatus and method of the present invention, it is apparent that each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.

While the foregoing is directed to the preferred embodiment of the present invention, it will be appreciated by those skilled in the art that various changes and modifications may be made therein without departing from the principles of the invention as set forth in the appended claims.

Claims

1. A method for sending a paging message is applied to a network device, and includes:

2. The method for sending the paging message according to claim 1, wherein sending the paging message to the user terminal through a cell or a home frequency point of a home operator of the user terminal comprises:

3. The method according to claim 2, wherein the core network sends the paging message to a base station where a cell with the home PLMN of the ue as the home PLMN is located based on the home public land mobile network PLMN of the ue and/or a tracking area to which the ue belongs, and the method comprises:

4. The method for sending a paging message according to claim 2, further comprising:

5. A method for sending a paging message according to claim 2 or 3, wherein the tracking sub-cell comprises at least one of:

a second type cell, which is a cell supporting multiple PLMNs, wherein a PLMN list supported by the cell includes PLMNs supported by a core network, and a PLMN of a home operator of a frequency point adopted by the cell is the same as the PLMNs supported by the core network;

6. The method according to claim 5, wherein the step of sending the paging message to the base station under the tracking area by using the first PLMN as the home PLMN is performed by a core network supporting the first PLMN, comprises:

7. The method for sending a paging message according to claim 6, wherein after the core network supporting the first PLMN sends a paging message to the base station in the tracking area to which the first-type cell and the second-type cell belong, the method further comprises:

8. The method for sending paging messages according to claim 2 or 3, further comprising:

9. The method according to claim 2, wherein the core network sends the paging message to a base station where a cell using the home PLMN of the ue as the home PLMN is located based on the home PLMN of the ue and/or a tracking area to which the ue belongs, and the method includes:

10. The method for sending a paging message according to claim 9, wherein the tracking cell includes at least one of:

11. The method for sending a paging message according to claim 10, wherein a core network supporting multiple PLMNs sends a paging message to a base station in the tracking area where a cell of a home PLMN of the user equipment is located by using the home PLMN as the home PLMN, and the method includes:

and the core network supporting multiple PLMNs sends paging messages to base stations which the fourth type cells and the fifth type cells belong to in the tracking area.

12. The method for sending a paging message according to claim 11, wherein after the core network supporting multiple PLMNs sends a paging message to the base station in the tracking area to which the fourth cell and the fifth cell belong, the method further comprises:

13. The method according to claim 2, wherein the core network sends the paging message to a base station in which a cell using the home PLMN of the ue as the home PLMN is located, based on the home PLMN of the ue and/or a tracking area to which the ue belongs, and the method comprises:

14. The method of claim 13, wherein the step of the base station obtaining the home PLMN of the ue comprises:

15. The method for sending a paging message according to claim 13, wherein a home PLMN of each cell under the base station may be pre-configured; or, for a base station in which the central unit CU and the distribution unit DU are separated, each CU may connect to one or more different DUs with different frequency points, and the DUs report the home PLMN of the frequency point of each DU to the CU in the process of establishing the E1 interface.

16. The method of claim 13, wherein the sending the paging message to a cell having a home PLMN identical to a home PLMN of the user terminal comprises:

sending paging messages to the fourth type cells and the fifth type cells;

the fifth type of cell is a cell supporting multiple PLMNs, a PLMN list supported by the cell includes a home PLMN of the user terminal, and a PLMN of a home operator of the frequency point used by the cell is the same as the home PLMN of the user terminal.

17. The method for sending a paging message according to claim 16, further comprising, after sending the paging message to the fourth type cell and the fifth type cell:

sending a paging message to the six types of cells;

18. A device for sending a paging message, applied to a network device, comprising:

19. The apparatus for transmitting a paging message according to claim 18, wherein the apparatus for transmitting a paging message to the user terminal via a cell or a home frequency of a home operator of the user terminal comprises:

20. A network device, comprising:

21. The network device of claim 20, wherein sending the paging message to the user terminal through a cell or a home frequency point of a home operator of the user terminal comprises:

22. A method for receiving a paging message, the method being applied to a user terminal, the method comprising:

and receiving a paging message sent by a network side through a cell of an attribution frequency point of an attribution operator of a user terminal or an attribution frequency point, wherein the tracking area to which the user terminal belongs is provided with cells of a plurality of frequency points.

23. An apparatus for receiving a paging message, the apparatus being applied to a user terminal, the apparatus comprising:

24. A user terminal, comprising:

25. A communication device, comprising: a processor, a memory storing a computer program which, when executed by the processor, performs the method of any one of claims 1 to 17 or the method of claim 22.

26. A computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 17 or the method of claim 22.