A method for sending and receiving paging messages, network equipment and terminal

Abstract

The present invention provides a method for sending and receiving paging messages, a network device and a terminal, the method comprising: when paging a user terminal, when there are cells with multiple frequencies in the tracking area to which the user terminal belongs, a paging message to the user terminal is sent through a cell or a frequency of a belonging frequency of the operator to which the user terminal belongs. The scheme of the present invention can ensure that when a user terminal is paging within a tracking area under a shared network, the called user is paged preferentially in a cell with the belonging PLMN of the user terminal as the belonging PLMN, thereby reducing the paging time and improving the paging accuracy under the premise of minimizing the sending of paging air interface messages.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a method for sending and receiving a paging message, a network device and a terminal. Background Art

[0002] When multiple cells of multiple base stations with different frequencies are connected under one core network, in order to reduce the location area update process and signaling overhead when the terminal moves, the same location tracking area (TA) is usually configured for the base station cells of multiple frequencies. When the terminal is in idle state, the core network needs to initiate paging to the terminal under the base stations of multiple frequencies of a TA.

[0003] In a wireless network sharing network, the different frequencies used by multiple base stations connected to a core network may belong to different operators. The meaning of a frequency belonging to an operator can be described as that the operator has the network operation and management authority for the wireless network frequency, and the users of the operator generally have priority to stay at the frequency and initiate services at the frequency, and the wireless service traffic generated after the service connection is initiated in the cell at the frequency does not need to pay wireless traffic settlement fees to other operators.

[0004] In a shared network, the core networks of multiple operators are connected to base stations of one or more frequencies at the same time. When connecting to base stations of multiple frequencies, the operators of each frequency may be the same or different. In order to reduce the location area update process when the terminal moves, operators usually configure the same location tracking area (TA) for base stations of multiple frequencies. When the core network needs to page the user, it needs to send paging messages on multiple frequencies where multiple base stations connected to a TA of the core network are located.

[0005] The problem with the prior art is that multiple frequency points of a shared network need to send paging air interface messages to the same called user, occupying air interface resources of multiple frequency point cells, resulting in low paging efficiency. Summary of the invention

[0006] 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 paging within a tracking area in a shared network, the user terminal is preferentially paged in a cell (frequency point) with the user terminal's home PLMN as the home PLMN, thereby reducing the paging time and improving the paging accuracy while minimizing the sending of paging air interface messages.

[0007] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0008] A method for sending a paging message, applied to a network device, comprising:

[0009] When paging a user terminal, if there are multiple frequency cells in the tracking area to which the user terminal belongs, a paging message to the user terminal is sent through the cell or frequency of the home frequency of the home operator of the user terminal.

[0010] Optionally, sending a paging message to the user terminal through a cell or a frequency point of a home frequency point of a home operator of the user terminal includes:

[0011] The core network sends the paging message to the base station where the cell having the home PLMN of the user terminal as the 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.

[0012] Optionally, the core network sends a paging message to a base station where a cell having the home PLMN of the user terminal as the 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, including:

[0013] The core network supporting the first PLMN queries the tracking area to which the user terminal belongs according to the context of the user terminal when the downlink service arrives;

[0014] The core network supporting the first PLMN sends a paging message to a base station in the tracking area where a cell with the first PLMN as the home PLMN is located.

[0015] Optionally, the method for sending a paging message further includes:

[0016] After receiving the paging message, the base station sends the paging message to the user terminal through the cell or frequency point of the home operator of the user terminal.

[0017] Optionally, the cells under the tracking area include at least one of the following:

[0018] A first type of cell, wherein the first type of cell is a cell that supports only a single PLMN, and the cell is the same as the PLMN supported by the core network;

[0019] The second type of cell is a cell supporting multiple PLMNs, the PLMN list supported by the cell includes the PLMNs supported by the core network, and the PLMN of the home operator of the frequency point used by the cell is the same as the PLMN supported by the core network;

[0020] The third type of cell is a cell that supports multiple PLMNs. The PLMN list supported by the cell includes PLMNs supported by the core network. The PLMN of the operator to which the frequency used by the cell belongs is different from the PLMN supported by the core network.

[0021] Optionally, the core network supporting the first PLMN sends a paging message to a base station in the tracking area where a cell with the first PLMN as a home PLMN is located, including:

[0022] The core network supporting the first PLMN sends a paging message to the base station to which the first type of cells and the second type of cells belong in the tracking area.

[0023] Optionally, after the core network supporting the first PLMN sends a paging message to the base station to which the first type of cell and the second type of cell belong in the tracking area, the method further includes:

[0024] The core network supporting the first PLMN sends a paging message to the base station to which the third type of cell belongs under the tracking area.

[0025] Optionally, the method for sending a paging message further includes:

[0026] The core network establishes an interface with the base station to obtain a list of PLMNs supported by cells under the base station and PLMN information of the home operator of each cell.

[0027] Optionally, the core network sends a paging message to a base station where a cell having 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, including:

[0028] When a downlink service arrives, the core network supporting multiple PLMNs queries 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;

[0029] The core network supporting multiple PLMNs sends a paging message to the base station where the cell of the home PLMN of the user terminal is located under the tracking area.

[0030] Optionally, the cells under the tracking area include at least one of the following:

[0031] A fourth type of cell, wherein the fourth type of cell is a cell that supports only a single PLMN, and the cell is the same as the home PLMN of the user terminal;

[0032] A fifth type of cell, wherein the fifth type of cell is a cell supporting multiple PLMNs, the PLMN list supported by the cell includes the home PLMN of the user terminal, and the PLMN of the home operator of the frequency point used by the cell is the same as the home PLMN of the user terminal;

[0033] The sixth category cell is a cell supporting multiple PLMNs. The PLMN list supported by the cell includes the home PLMN of the user terminal. The PLMN of the home operator of the frequency point used by the cell is different from the home PLMN of the user terminal.

[0034] Optionally, the core network supporting multiple PLMNs sends a paging message to a base station where a cell of a home PLMN of the user terminal is located under the tracking area, including:

[0035] The core network supporting multiple PLMNs sends a paging message to the base stations to which the fourth-category cell and the fifth-category cell belong under the tracking area.

[0036] Optionally, after the core network supporting multiple PLMNs sends a paging message to the base station to which the fourth type cell and the fifth type cell belong under the tracking area, the method further includes:

[0037] The core network supporting multiple PLMNs sends a paging message to the base stations to which the six types of cells belong under the tracking area.

[0038] Optionally, the core network sends a paging message to a base station where a cell having 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, including:

[0039] When a downlink service arrives, the core network queries 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;

[0040] The core network sends a paging message to all base stations under the tracking area, and the base station compares the PLMN of the user terminal with the PLMN of each cell under the base station, and sends a paging message to the cell whose PLMN is the same as the PLMN of the user terminal, or by the base station through the frequency of the operator to which the user terminal belongs.

[0041] Optionally, the process of the base station obtaining the home PLMN of the user terminal includes:

[0042] When the user terminal is in an idle state, when the core network sends a downlink paging message to all base stations in the tracking area, the base station obtains the message from the context of the user terminal sent by the core network; or

[0043] When the user terminal is in an inactive state, the context of the user terminal is stored in the base station.

[0044] Optionally, the PLMN of each cell under the base station can be pre-configured; or, for a base station in which a centralized unit CU is separated from a distributed unit DU, each CU may be connected to one or more different DUs with different frequencies, and the DU will report the PLMN of the frequency of each DU to the CU during the establishment of the E1 interface.

[0045] Optionally, sending a paging message to a cell whose home PLMN is the same as the home PLMN of the user terminal includes:

[0046] Sending a paging message to the fourth and fifth cell types;

[0047] The fourth type of cell is a cell that only supports a single PLMN, and the cell is the same as the home PLMN of the user terminal;

[0048] The fifth type of cell is a cell supporting multiple PLMNs, the PLMN list supported by the cell includes the home PLMN of the user terminal, and the PLMN of the home operator of the frequency point used by the cell is the same as the home PLMN of the user terminal;

[0049] Optionally, after sending the paging message to the fourth type cell and the fifth type cell, the method further includes:

[0050] Sending a paging message to the six types of cells;

[0051] The sixth type of cell is a cell supporting multiple PLMNs, the PLMN list supported by the cell includes the home PLMN of the user terminal, and the PLMN of the home operator of the frequency point used by the cell is different from the home PLMN of the user terminal.

[0052] An embodiment of the present invention further provides a device for sending a paging message, which is applied to a network device, including:

[0053] The transceiver module is used to page a user terminal. When there are multiple frequency cells in the tracking area to which the user terminal belongs, a paging message to the user terminal is sent through the cell or frequency of the home frequency of the home operator of the user terminal.

[0054] Optionally, sending a paging message to the user terminal through a cell or a frequency point of a home frequency point of a home operator of the user terminal includes:

[0055] The core network sends the paging message to the base station where the cell having the home PLMN of the user terminal as the 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.

[0056] An embodiment of the present invention further provides a network device, including:

[0057] The transceiver is used to page a user terminal. When there are multiple frequency cells in the tracking area to which the user terminal belongs, a paging message to the user terminal is sent through the cell or frequency of the home frequency of the home operator of the user terminal.

[0058] Optionally, sending a paging message to the user terminal through a cell or a frequency point of a home frequency point of a home operator of the user terminal includes:

[0059] The core network sends the paging message to the base station where the cell having the home PLMN of the user terminal as the 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.

[0060] An embodiment of the present invention further provides a method for receiving a paging message, which is applied to a user terminal, and the method includes:

[0061] A paging message is received from the network side through a cell or a frequency point of a home frequency point of a home operator of a user terminal, where there are cells of multiple frequencies in a tracking area to which the user terminal belongs.

[0062] An embodiment of the present invention further provides a device for receiving a paging message, which is applied to a user terminal, and the device includes:

[0063] The transceiver module is used to receive a paging message sent by the network side through a cell or a frequency point of a home operator of a user terminal, where there are cells with multiple frequencies in the tracking area to which the user terminal belongs.

[0064] An embodiment of the present invention further provides a user terminal, comprising:

[0065] The transceiver is used to receive a paging message sent by the network side through a cell or a frequency point of a home operator of a user terminal, where there are cells with multiple frequencies in the tracking area to which the user terminal belongs.

[0066] An embodiment of the present invention further provides a communication device, comprising: a processor and a memory storing a computer program, wherein when the computer program is executed by the processor, the method described above is executed.

[0067] An embodiment of the present invention further provides a computer-readable storage medium storing instructions, which, when executed on a computer, enable the computer to execute the method described above.

[0068] The above solution of the present invention includes at least the following beneficial effects:

[0069] When paging a user terminal, if there are multiple cells with different frequencies in the tracking area to which the user terminal belongs, a paging message to the user terminal is sent through the cell or frequency of the frequency of the operator to which the user terminal belongs, to ensure that when a user is paging in a tracking area under a shared network, the user terminal is preferentially paged in the cell (frequency) with the PLMN of the user terminal as the PLMN, thereby reducing the paging time and improving the paging accuracy while minimizing the sending of paging air interface messages. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] Figure 1 is a flow chart of a method for sending a paging message according to an embodiment of the present invention;

[0071] Figure 2 It is a module block diagram of a device for sending a paging message according to an embodiment of the present invention. DETAILED DESCRIPTION

[0072] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0073] like Figure 1 As shown, an embodiment of the present invention provides a method for sending a paging message, which is applied to a network device, including:

[0074] Step 11, when paging a user terminal, if there are multiple frequency cells in the tracking area to which the user terminal belongs, a paging message to the user terminal is sent through the cell or frequency of the home frequency of the home operator of the user terminal.

[0075] In this embodiment, the operator's home frequency means that the first PLMN in the PLMN list broadcast by the cell of the frequency is the PLMN of the operator, that is, the home PLMN of the frequency is the PLMN of the operator. The scheme of this embodiment is to page the user terminal. When there are cells with multiple frequencies in the tracking area to which the user terminal belongs, the paging message to the user terminal is sent through the cell or the home frequency of the home operator of the user terminal, so as to ensure that when paging the user in a tracking area under a shared network, the user terminal is paged preferentially in the cell (frequency) with the home PLMN of the user terminal as the home PLMN, so as to reduce the paging time and improve the paging accuracy under the premise of minimizing the sending of paging air interface messages.

[0076] In an optional embodiment of the present invention, step 11 may include:

[0077] Step 111, the core network sends the paging message to the base station where the cell with the home PLMN of the user terminal as the 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. Here, there are multiple cells under one frequency point, and the home PLMN of the cell refers to the first PLMN in the PLMN list broadcast by the cell, and the home PLMN of the frequency point is the first PLMN in the PLMN list broadcast by the cell of the frequency point.

[0078] In an optional embodiment of the present invention, in step 111, the core network sends a paging message to a base station where a cell having the home PLMN of the user terminal as the 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, including:

[0079] The core network supporting the first PLMN queries the tracking area to which the user terminal belongs according to the context of the user terminal when the downlink service arrives;

[0080] The core network supporting the first PLMN sends a paging message to a base station in the tracking area where a cell with the first PLMN as the home PLMN is located.

[0081] After receiving the paging message, the base station sends the paging message to the user terminal through the cell or frequency point of the home operator of the user terminal.

[0082] Here, the cells under the tracking area include at least one of the following:

[0083] A first type of cell, wherein the first type of cell is a cell that supports only a single PLMN, and the cell is the same as the PLMN supported by the core network;

[0084] The second type of cell is a cell supporting multiple PLMNs, the PLMN list supported by the cell includes the PLMNs supported by the core network, and the PLMN of the home operator of the frequency point used by the cell is the same as the PLMN supported by the core network;

[0085] The third type of cell is a cell that supports multiple PLMNs. The PLMN list supported by the cell includes PLMNs supported by the core network. The PLMN of the operator to which the frequency used by the cell belongs is different from the PLMN supported by the core network.

[0086] In an optional embodiment of the present invention, the core network supporting the first PLMN sends a paging message to a base station in the tracking area where a cell with the first PLMN as a home PLMN is located, including:

[0087] The core network supporting the first PLMN sends a paging message to the base station to which the first type of cells and the second type of cells belong in the tracking area.

[0088] Further, after sending the paging message to the base station to which the first type of cell and the second type of cell belong in the tracking area, the method may also include:

[0089] The core network supporting the first PLMN sends a paging message to the base station to which the third type of cell belongs under the tracking area.

[0090] In an optional embodiment of the present invention, the method for sending a paging message may further include:

[0091] The core network establishes an interface with the base station to obtain the PLMN list supported by the cells under the base station and the PLMN information of the home operator of each cell.

[0092] A specific implementation example 1: The core network supporting a single PLMN determines to prioritize paging of the cell of the user terminal, including:

[0093] Step 1: When downlink service arrives, the core network supporting a single PLMN (i.e., the first PLMN) queries the tracking area to which the user terminal belongs based on the context of the user terminal. Since the core network only supports a single PLMN at this time, it can directly decide to paging in the tracking area to which the user of the PLMN belongs.

[0094] There are three types of cells in this tracking area:

[0095] (1) A cell that only supports a single PLMN, and the cell is the same PLMN supported by the core network;

[0096] (2) For a cell that supports multiple PLMNs, the supported PLMN list includes the PLMNs supported by the core network, and the PLMN of the home operator of the frequency point used by the cell is the same as the PLMN supported by the core network;

[0097] (3) For a cell supporting multiple PLMNs, the supported PLMN list includes PLMNs supported by the core network. The PLMN of the home operator of the frequency point used by the cell is different from the PLMN supported by the core network.

[0098] Step 2: The core network preferentially sends paging messages to the base stations belonging to the (1st) and (2nd) types of cells in the tracking area.

[0099] Step 3: If the core network receives a paging response (such as a service connection request) from the user terminal, the paging is completed; otherwise, the aforementioned step 2 can be repeated, that is, a paging message is sent to the base station belonging to the (1st) and (2nd) type cells under the tracking area. This repetitive process can be continued until the paging is completed or the paging fails.

[0100] Step 4: In step 2 or 3, after the core network preferentially sends paging messages to the base stations belonging to the (1st) and (2nd) types of cells in the tracking area, the core network may continue to send paging messages to the base stations belonging to the (3rd) type of cells in the tracking area.

[0101] For step 1, when the core network establishes an NG interface with the base station, the base station not only informs the core network of the list of PLMNs supported by its cells, but also needs to inform the core network of the PLMN information of the operator to which each cell under the base station belongs.

[0102] The method for the base station to inform the core network of the PLMN information of the home operator of its cell may be: the base station informs the core network through an interface message with the core network.

[0103] A specific embodiment may be: in an NG interface message (such as an NG Setup or NG Configuration Update message), the home operator identifier is added to the home PLMN of the cell (or frequency point, because different frequencies must belong to different cells) in the PLMN list broadcast by the base station, as shown in the following table. Other messages or methods with similar functions are also possible.

[0104]

[0105]

[0106]

[0107] For step 2, the core network compares the PLMN supported by itself with the home PLMN of the base station cell with the NG interface, and preferentially sends paging messages to the base station cell whose home PLMN is the same as the PLMN supported by itself.

[0108] Correspondingly, in step 4, the core network sends a paging message to a base station cell whose home PLMN is different from the PLMN supported by the core network.

[0109] In an optional embodiment of the present invention, in step 111, the core network sends a paging message to a base station where a cell with 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, including:

[0110] When a downlink service arrives, the core network supporting multiple PLMNs queries 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;

[0111] The core network supporting multiple PLMNs sends a paging message to the base station where the cell of the home PLMN of the user terminal is located under the tracking area.

[0112] Here, the cells under the tracking area include at least one of the following:

[0113] A fourth type of cell, wherein the fourth type of cell is a cell that supports only a single PLMN, and the cell is the same as the home PLMN of the user terminal;

[0114] A fifth type of cell, wherein the fifth type of cell is a cell supporting multiple PLMNs, the PLMN list supported by the cell includes the home PLMN of the user terminal, and the PLMN of the home operator of the frequency point used by the cell is the same as the home PLMN of the user terminal;

[0115] The sixth category cell is a cell supporting multiple PLMNs. The PLMN list supported by the cell includes the home PLMN of the user terminal. The PLMN of the home operator of the frequency point used by the cell is different from the home PLMN of the user terminal.

[0116] In an optional embodiment of the present invention, the core network supporting multiple PLMNs sends a paging message to a base station under the tracking area, with the home PLMN of the user terminal as the cell where the home PLMN is located, including:

[0117] The core network supporting multiple PLMNs sends a paging message to the base stations to which the fourth-category cell and the fifth-category cell belong under the tracking area.

[0118] Further, after sending the paging message to the base station to which the fourth type cell and the fifth type cell belong under the tracking area, the method may further include:

[0119] The core network supporting multiple PLMNs sends a paging message to the base stations to which the six types of cells belong under the tracking area.

[0120] In a specific implementation example 2: the core network supporting multiple PLMNs determines to prioritize paging the cell of the user, including:

[0121] Step 1: When a user registers, the core network obtains the home PLMN of the user terminal and stores it in the context of the user terminal.

[0122] Step 2: When a downlink service arrives, the core network supporting multiple PLMNs queries 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.

[0123] There may be three types of cells under the tracking area of ​​the PLMN:

[0124] (1) Only single PLMN cells are supported, and the cell is the same as the home PLMN of the user terminal;

[0125] (2) For a cell supporting multiple PLMNs, the supported PLMN list includes the home PLMN of the user terminal, and the PLMN of the home operator of the frequency point used by the cell is the same as the home PLMN of the user terminal;

[0126] (3) For a cell supporting multiple PLMNs, the supported PLMN list includes the home PLMN of the user terminal. The PLMN of the home operator of the frequency point used by the cell is different from the home PLMN of the user terminal.

[0127] Step 3: The core network sends a paging message to the base stations belonging to the (1st) and (2nd) type cells in the tracking area.

[0128] Step 4: If the core network receives a paging response (such as a service connection request) from the user terminal, the paging is completed; otherwise, the aforementioned step 2 can be repeated, that is, a paging message is sent to the base station belonging to the (1st) and (2nd) type cells under the tracking area. This repetitive process can be continued until the paging is completed or the paging fails.

[0129] Step 5: In step 2 or 3, after the core network preferentially sends paging messages to the base stations belonging to the (1st) and (2nd) types of cells in the tracking area, the core network may continue to send paging messages to the base stations belonging to the (3rd) type of cells in the tracking area.

[0130] For step 1, the user reports the HPLMN (home PLMN) stored in the card to the AMF (mobility management function) when registering, and the AMF stores the HPLMN in the UE context; or adds the user's HPLMN to the user subscription data of the HSS (home subscriber server), and the AMF extracts it from the HSS on demand.

[0131] For 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 a paging message to the base station cell whose home PLMN is the same as the home PLMN of the user terminal.

[0132] Correspondingly, in step 5, the core network sends a paging message to a base station cell whose home PLMN of the base station is different from that of the user terminal.

[0133] In an optional embodiment of the present invention, in step 111, the core network sends a paging message to a base station where a cell with 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, including:

[0134] When a downlink service arrives, the core network queries 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;

[0135] The core network sends a paging message to all base stations under the tracking area, and the base station compares the home PLMN of the called user terminal with the home PLMN of each cell under the base station, and sends the paging message to the cell whose home PLMN is the same as the home PLMN of the user terminal, or the base station sends the paging message through the home frequency of the home operator of the user terminal.

[0136] In an optional embodiment of the present invention, the process of the base station obtaining the home PLMN of the user terminal includes:

[0137] When the user terminal is in an idle state, when the core network sends a downlink paging message to all base stations in the tracking area, the base station obtains the paging message from the context of the user terminal sent by the core network; or,

[0138] When the user terminal is in an inactive state, the context of the user terminal is stored in the base station.

[0139] In an optional embodiment of the present invention, the PLMN of each cell under the base station can be pre-configured; or, for a base station in which a centralized unit CU is separated from a distributed unit DU, each CU may be connected to one or more different DUs with different frequencies, and the DU will report the PLMN of each DU's frequency to the CU during the establishment of the E1 interface.

[0140] In an optional embodiment of the present invention, sending a paging message to a cell whose home PLMN is the same as the home PLMN of the user terminal includes:

[0141] Sending a paging message to the fourth and fifth cell types;

[0142] The fourth type of cell is a cell that only supports a single PLMN, and the cell is the same as the home PLMN of the user terminal;

[0143] The fifth type of cell is a cell supporting multiple PLMNs, the PLMN list supported by the cell includes the home PLMN of the user terminal, and the PLMN of the home operator of the frequency point used by the cell is the same as the home PLMN of the user terminal;

[0144] In an optional embodiment of the present invention, after sending paging messages to the fourth category cell and the fifth category cell, it may also include: sending a paging message to the sixth category cell; wherein the sixth category cell supports multiple PLMN cells, and the PLMN list supported by the cell includes the home PLMN of the user terminal, and the PLMN of the home operator of the frequency point used by the cell is different from the home PLMN of the user terminal.

[0145] A specific implementation example 3: the base station determines to preferentially page the cell of the user, including:

[0146] Step 1: When a user registers, the core network obtains the home PLMN of the user terminal and stores it in the context of the user.

[0147] Step 2: When a downlink service arrives, the core network queries the home PLMN of the user terminal and the tracking area to which the called user belongs according to the context of the user terminal, and sends a downlink paging message to all base stations under the tracking area.

[0148] Step 3: After receiving the paging message, the base station compares the home PLMN of the user terminal with the home PLMNs of each cell under the base station, and sends a paging message to the cell whose home PLMN is the same as the home PLMN of the user terminal.

[0149] For 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, when the core network sends a downlink paging message to all base stations under the tracking area, the home PLMN of the user terminal in the UE context can also be synchronously sent to the base station; when the user is in an inactive state, the UE context will be stored in the base station or other base stations (at this time, it can be obtained through the message process between base stations).

[0150] For step 3, the home PLMN of each cell under the base station can be a pre-configured attribute. Each cell can be pre-configured with a home PLMN according to the frequency it supports. For a base station in which the CU and DU are separated, each CU may be connected to one or more different DUs with different frequencies. At this time, the DU will report the home PLMN of each DU's frequency to the CU during the establishment of the E1 interface.

[0151] Step 4: If a paging response (such as a service connection request) is received from the user terminal, the paging is completed; otherwise, the aforementioned step 3 can be repeated, that is, a paging message is sent to the base station belonging to the (1st) and (2nd) type cells under the tracking area. This repetitive process can be continued until the paging is completed or the paging fails.

[0152] Step 5: In step 3 or 4, after the base station preferentially sends paging messages to the base stations belonging to the (1st) and (2nd) types of cells in the tracking area, the base station may continue to send paging messages to the base stations belonging to the (3rd) type of cells in the tracking area.

[0153] The above-mentioned embodiments of the present invention ensure that when paging a user in a tracking area under a shared network, the user terminal is preferentially paged in the cell (frequency point) with the user terminal's home PLMN as the home PLMN, thereby reducing the paging time and improving the paging accuracy while minimizing the sending of paging air interface messages.

[0154] like Figure 2 As shown, an embodiment of the present invention further provides a paging message sending device 20, which is applied to a network device, including:

[0155] The transceiver module 21 is used to page a user terminal. When there are multiple frequency cells in the tracking area to which the user terminal belongs, a paging message to the user terminal is sent through the cell or frequency of the home frequency of the home operator of the user terminal.

[0156] Optionally, sending a paging message to the user terminal through a cell or a frequency point of a home frequency point of a home operator of the user terminal includes:

[0157] The core network sends the paging message to the base station where the cell having the home PLMN of the user terminal as the 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.

[0158] Optionally, the core network sends a paging message to a base station where a cell having the home PLMN of the user terminal as the 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, including:

[0159] The core network supporting the first PLMN queries the tracking area to which the user terminal belongs according to the context of the user terminal when the downlink service arrives;

[0160] The core network supporting the first PLMN sends a paging message to a base station in the tracking area where a cell with the first PLMN as the home PLMN is located.

[0161] Optionally, after receiving the paging message, the base station sends the paging message to the user terminal through the cell or frequency point of the operator to which the user terminal belongs.

[0162] Optionally, the cells under the tracking area include at least one of the following:

[0163] A first type of cell, wherein the first type of cell is a cell that supports only a single PLMN, and the cell is the same as the PLMN supported by the core network;

[0164] The second type of cell is a cell supporting multiple PLMNs, the PLMN list supported by the cell includes the PLMNs supported by the core network, and the PLMN of the home operator of the frequency point used by the cell is the same as the PLMN supported by the core network;

[0165] The third type of cell is a cell that supports multiple PLMNs. The PLMN list supported by the cell includes PLMNs supported by the core network. The PLMN of the operator to which the frequency used by the cell belongs is different from the PLMN supported by the core network.

[0166] Optionally, the core network supporting the first PLMN sends a paging message to a base station in the tracking area where a cell with the first PLMN as a home PLMN is located, including:

[0167] The core network supporting the first PLMN sends a paging message to the base station to which the first type of cells and the second type of cells belong in the tracking area.

[0168] Optionally, after the core network supporting the first PLMN sends a paging message to the base station to which the first type of cell and the second type of cell belong in the tracking area, the method further includes:

[0169] The core network supporting the first PLMN sends a paging message to the base station to which the third type of cell belongs under the tracking area.

[0170] Optionally, the core network establishes an interface with the base station to obtain a list of PLMNs supported by cells under the base station and PLMN information of the operator to which each cell belongs.

[0171] Optionally, the core network sends a paging message to a base station where a cell having 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, including:

[0172] When a downlink service arrives, the core network supporting multiple PLMNs queries 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;

[0173] The core network supporting multiple PLMNs sends a paging message to the base station where the cell of the home PLMN of the user terminal is located under the tracking area.

[0174] Optionally, the cells under the tracking area include at least one of the following:

[0175] A fourth type of cell, wherein the fourth type of cell is a cell that supports only a single PLMN, and the cell is the same as the home PLMN of the user terminal;

[0176] A fifth type of cell, wherein the fifth type of cell is a cell supporting multiple PLMNs, the PLMN list supported by the cell includes the home PLMN of the user terminal, and the PLMN of the home operator of the frequency point used by the cell is the same as the home PLMN of the user terminal;

[0177] The sixth category cell is a cell supporting multiple PLMNs. The PLMN list supported by the cell includes the home PLMN of the user terminal. The PLMN of the home operator of the frequency point used by the cell is different from the home PLMN of the user terminal.

[0178] Optionally, the core network supporting multiple PLMNs sends a paging message to a base station where a cell of a home PLMN of the user terminal is located under the tracking area, including:

[0179] The core network supporting multiple PLMNs sends a paging message to the base stations to which the fourth-category cell and the fifth-category cell belong under the tracking area.

[0180] Optionally, after the core network supporting multiple PLMNs sends a paging message to the base station to which the fourth type cell and the fifth type cell belong under the tracking area, the method further includes:

[0181] The core network supporting multiple PLMNs sends a paging message to the base stations to which the six types of cells belong under the tracking area.

[0182] Optionally, the core network sends a paging message to a base station where a cell having 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, including:

[0183] When a downlink service arrives, the core network queries 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;

[0184] The core network sends a paging message to all base stations under the tracking area, and the base station compares the PLMN of the user terminal with the PLMN of each cell under the base station, and sends a paging message to the cell whose PLMN is the same as the PLMN of the user terminal, or by the base station through the frequency of the operator to which the user terminal belongs.

[0185] Optionally, the process of the base station obtaining the home PLMN of the user terminal includes:

[0186] When the user terminal is in an idle state, when the core network sends a downlink paging message to all base stations in the tracking area, the base station obtains the message from the context of the user terminal sent by the core network; or

[0187] When the user terminal is in an inactive state, the context of the user terminal is stored in the base station.

[0188] Optionally, the PLMN of each cell under the base station can be pre-configured; or, for a base station in which a centralized unit CU is separated from a distributed unit DU, each CU may be connected to one or more different DUs with different frequencies, and the DU will report the PLMN of the frequency of each DU to the CU during the establishment of the E1 interface.

[0189] Optionally, sending a paging message to a cell whose home PLMN is the same as the home PLMN of the user terminal includes:

[0190] Sending a paging message to the fourth and fifth cell types;

[0191] The fourth type of cell is a cell that only supports a single PLMN, and the cell is the same as the home PLMN of the user terminal;

[0192] The fifth type of cell is a cell supporting multiple PLMNs, the PLMN list supported by the cell includes the home PLMN of the user terminal, and the PLMN of the home operator of the frequency point used by the cell is the same as the home PLMN of the user terminal;

[0193] Optionally, after sending the paging message to the fourth type cell and the fifth type cell, the method further includes:

[0194] Sending a paging message to the six types of cells;

[0195] The sixth type of cell is a cell supporting multiple PLMNs, the PLMN list supported by the cell includes the home PLMN of the user terminal, and the PLMN of the home operator of the frequency point used by the cell is different from the home PLMN of the user terminal.

[0196] It should be noted that the device is a device corresponding to the above method, and all implementations in the above method embodiment are applicable to the embodiment of the device, and can also achieve the same technical effect. The device can also include a processing module 22 for processing data sent and received by the transceiver module 21.

[0197] An embodiment of the present invention further provides a network device, including:

[0198] The transceiver is used to send a paging message to a user terminal in a cell of a home frequency of an operator belonging to the called user terminal when there are multiple frequency cells in a tracking area TA under the core network, and the user terminal is in the tracking area.

[0199] Optionally, sending a paging message to the user terminal through a cell or a frequency point of a home frequency point of a home operator of the user terminal includes:

[0200] The core network sends the paging message to the base station where the cell having the home PLMN of the user terminal as the 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.

[0201] Optionally, the core network sends a paging message to a base station where a cell having the home PLMN of the user terminal as the 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, including:

[0202] The core network supporting the first PLMN queries the tracking area to which the user terminal belongs according to the context of the user terminal when the downlink service arrives;

[0203] The core network supporting the first PLMN sends a paging message to a base station in the tracking area where a cell with the first PLMN as the home PLMN is located.

[0204] Optionally, after receiving the paging message, the base station sends the paging message to the user terminal through the cell or frequency point of the operator to which the user terminal belongs.

[0205] Optionally, the cells under the tracking area include at least one of the following:

[0206] A first type of cell, wherein the first type of cell is a cell that supports only a single PLMN, and the cell is the same as the PLMN supported by the core network;

[0207] The second type of cell is a cell supporting multiple PLMNs, the PLMN list supported by the cell includes the PLMNs supported by the core network, and the PLMN of the home operator of the frequency point used by the cell is the same as the PLMN supported by the core network;

[0208] The third type of cell is a cell that supports multiple PLMNs. The PLMN list supported by the cell includes PLMNs supported by the core network. The PLMN of the operator to which the frequency used by the cell belongs is different from the PLMN supported by the core network.

[0209] Optionally, the core network supporting the first PLMN sends a paging message to a base station in the tracking area where a cell with the first PLMN as a home PLMN is located, including:

[0210] The core network supporting the first PLMN sends a paging message to the base station to which the first type of cells and the second type of cells belong in the tracking area.

[0211] Optionally, after the core network supporting the first PLMN sends a paging message to the base station to which the first type of cell and the second type of cell belong in the tracking area, the method further includes:

[0212] The core network supporting the first PLMN sends a paging message to the base station to which the third type of cell belongs under the tracking area.

[0213] Optionally, the core network establishes an interface with the base station to obtain a list of PLMNs supported by cells under the base station and PLMN information of the operator to which each cell belongs.

[0214] Optionally, the core network sends a paging message to a base station where a cell having 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, including:

[0215] When a downlink service arrives, the core network supporting multiple PLMNs queries 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;

[0216] The core network supporting multiple PLMNs sends a paging message to the base station where the cell of the home PLMN of the user terminal is located under the tracking area.

[0217] Optionally, the cells under the tracking area include at least one of the following:

[0218] A fourth type of cell, wherein the fourth type of cell is a cell that supports only a single PLMN, and the cell is the same as the home PLMN of the user terminal;

[0219] A fifth type of cell, wherein the fifth type of cell is a cell supporting multiple PLMNs, the PLMN list supported by the cell includes the home PLMN of the user terminal, and the PLMN of the home operator of the frequency point used by the cell is the same as the home PLMN of the user terminal;

[0220] The sixth category cell is a cell supporting multiple PLMNs. The PLMN list supported by the cell includes the home PLMN of the user terminal. The PLMN of the home operator of the frequency point used by the cell is different from the home PLMN of the user terminal.

[0221] Optionally, the core network supporting multiple PLMNs sends a paging message to a base station where a cell of a home PLMN of the user terminal is located under the tracking area, including:

[0222] The core network supporting multiple PLMNs sends a paging message to the base stations to which the fourth-category cell and the fifth-category cell belong under the tracking area.

[0223] Optionally, after the core network supporting multiple PLMNs sends a paging message to the base station to which the fourth type cell and the fifth type cell belong under the tracking area, the method further includes:

[0224] The core network supporting multiple PLMNs sends a paging message to the base stations to which the six types of cells belong under the tracking area.

[0225] Optionally, the core network sends a paging message to a base station where a cell having 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, including:

[0226] When a downlink service arrives, the core network queries 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;

[0227] The core network sends a paging message to all base stations under the tracking area, and the base station compares the PLMN of the user terminal with the PLMN of each cell under the base station, and sends a paging message to the cell whose PLMN is the same as the PLMN of the user terminal, or by the base station through the frequency of the operator to which the user terminal belongs.

[0228] Optionally, the process of the base station obtaining the home PLMN of the user terminal includes:

[0229] When the user terminal is in an idle state, when the core network sends a downlink paging message to all base stations in the tracking area, the base station obtains the message from the context of the user terminal sent by the core network; or

[0230] When the user terminal is in an inactive state, the context of the user terminal is stored in the base station.

[0231] Optionally, the PLMN of each cell under the base station can be pre-configured; or, for a base station in which a centralized unit CU is separated from a distributed unit DU, each CU may be connected to one or more different DUs with different frequencies, and the DU will report the PLMN of the frequency of each DU to the CU during the establishment of the E1 interface.

[0232] Optionally, sending a paging message to a cell whose home PLMN is the same as the home PLMN of the user terminal includes:

[0233] Sending a paging message to the fourth and fifth cell types;

[0234] The fourth type of cell is a cell that only supports a single PLMN, and the cell is the same as the home PLMN of the user terminal;

[0235] The fifth type of cell is a cell supporting multiple PLMNs, the PLMN list supported by the cell includes the home PLMN of the user terminal, and the PLMN of the home operator of the frequency point used by the cell is the same as the home PLMN of the user terminal;

[0236] Optionally, after sending the paging message to the fourth type cell and the fifth type cell, the method further includes:

[0237] Sending a paging message to the six types of cells;

[0238] The sixth type of cell is a cell supporting multiple PLMNs, the PLMN list supported by the cell includes the home PLMN of the user terminal, and the PLMN of the home operator of the frequency point used by the cell is different from the home PLMN of the user terminal.

[0239] It should be noted that the network device is a network device corresponding to the above method, and all implementation methods in the above method embodiments are applicable to the embodiments of the network device and can achieve the same technical effects.

[0240] An embodiment of the present invention further provides a method for receiving a paging message, which is applied to a user terminal, and the method includes:

[0241] A paging message is received from the network side through a cell or a frequency point of a home frequency point of a home operator of a user terminal, where there are cells of multiple frequencies in a tracking area to which the user terminal belongs.

[0242] All implementation methods involving the user terminal side in the above-mentioned network side method are applicable to the terminal side method and can achieve the same technical effect.

[0243] An embodiment of the present invention further provides a device for receiving a paging message, which is applied to a user terminal, and the device includes:

[0244] The transceiver module is used to receive a paging message sent by the network side through a cell or a frequency point of a home operator of a user terminal, where there are cells with multiple frequencies in the tracking area to which the user terminal belongs.

[0245] The device is a device corresponding to the above method, and all implementation methods in the above method embodiments are applicable to the embodiments of the device and can achieve the same technical effects.

[0246] An embodiment of the present invention further provides a user terminal, comprising:

[0247] The transceiver is used to receive a paging message sent by the network side through a cell or a frequency point of a home operator of a user terminal, where there are cells with multiple frequencies in the tracking area to which the user terminal belongs.

[0248] The user terminal is a user terminal corresponding to the above method, and all implementations in the above method embodiments are applicable to the embodiments of the user terminal, and can also achieve the same technical effect. An embodiment of the present invention also provides a communication device, including: a processor, a memory storing a computer program, and when the computer program is executed by the processor, the method described above is executed. All implementations in the above method embodiments are applicable to this embodiment, and can also achieve the same technical effect.

[0249] The embodiment of the present invention further provides a computer-readable storage medium, including instructions, which, when executed on a computer, enable the computer to execute the method described above. All implementations in the above method embodiment are applicable to this embodiment and can achieve the same technical effect.

[0250] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0251] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0252] In the embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0253] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0254] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0255] If the functions are implemented in the form of software functional 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 invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, ROM, RAM, magnetic disks, or optical disks.

[0256] In addition, it should be noted that in the apparatus and method of the present invention, it is obvious that each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent schemes of the present invention. Moreover, the steps of performing the above-mentioned series of processing can naturally be performed in chronological order according to the order of description, but it is not necessary to perform them in chronological order, and some steps can be performed in parallel or independently of each other. For those of ordinary skill in the art, it is understood that all or any steps or components of the method and apparatus of the present invention can be implemented in any computing device (including processors, storage media, etc.) or a network of computing devices in hardware, firmware, software or a combination thereof, which can be achieved by those of ordinary skill in the art using their basic programming skills after reading the description of the present invention.

[0257] Therefore, the purpose of the present invention can also be achieved by running a program or a group of programs on any computing device. The computing device can be a well-known general device. Therefore, the purpose of the present invention can also be achieved by simply providing a program product containing a program code that implements the method or device. That is to say, such a program product also constitutes the present invention, and the storage medium storing such a program product also constitutes the present invention. Obviously, the storage medium can be any well-known storage medium or any storage medium developed in the future. It should also be pointed out that in the device and method of the present invention, it is obvious that each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent schemes of the present invention. In addition, the steps of performing the above-mentioned series of processing can naturally be performed in chronological order according to the order of description, but it is not necessary to perform them in chronological order. Some steps can be performed in parallel or independently of each other.

[0258] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for sending a paging message, characterized in that: Applied to network equipment, including: When paging a user terminal, if there are multiple frequency cells in the tracking area to which the user terminal belongs, a paging message to the user terminal is sent through the cell or frequency of the home frequency of the home operator of the user terminal; The method of sending a paging message to the user terminal through a cell or a frequency point of a home frequency point of a home operator of the user terminal includes: The core network sends the paging message to the base station where the cell having the home PLMN of the user terminal as the home PLMN is located based on the home public land mobile network PLMN of the user terminal and the tracking area to which the user terminal belongs.

2. The method for sending a paging message according to claim 1, characterized in that: The core network sends a paging message to a base station where a cell having the home PLMN of the user terminal as the home PLMN is located based on the home public land mobile network PLMN of the user terminal and the tracking area to which the user terminal belongs, including: The core network supporting the first PLMN queries the tracking area to which the user terminal belongs according to the context of the user terminal when the downlink service arrives; The core network supporting the first PLMN sends a paging message to a base station in the tracking area where a cell with the first PLMN as the home PLMN is located.

3. The method for sending a paging message according to claim 1, characterized in that: Also includes: After receiving the paging message, the base station sends the paging message to the user terminal through the cell or frequency point of the home operator of the user terminal.

4. The method for sending a paging message according to claim 1 or 2, characterized in that: The cells under the tracking area include at least one of the following: A first type of cell, wherein the first type of cell is a cell that supports only a single PLMN, and the cell is the same as the PLMN supported by the core network; The second type of cell is a cell supporting multiple PLMNs, the PLMN list supported by the cell includes the PLMNs supported by the core network, and the PLMN of the home operator of the frequency point used by the cell is the same as the PLMN supported by the core network; The third type of cell is a cell supporting multiple PLMNs. The PLMN list supported by the cell includes PLMNs supported by the core network. The PLMN of the operator to which the frequency used by the cell belongs is different from the PLMN supported by the core network.

5. The method for sending a paging message according to claim 4, characterized in that: The core network supporting the first PLMN sends a paging message to a base station in the tracking area where a cell with the first PLMN as a home PLMN is located, including: The core network supporting the first PLMN sends a paging message to the base station to which the first type of cells and the second type of cells belong in the tracking area.

6. The method for sending a paging message according to claim 5, characterized in that: After the core network supporting the first PLMN sends a paging message to the base station to which the first type of cell and the second type of cell belong under the tracking area, the method further includes: The core network supporting the first PLMN sends a paging message to the base station to which the third type of cell belongs under the tracking area.

7. The method for sending a paging message according to claim 1 or 2, characterized in that: Also includes: The core network establishes an interface with the base station to obtain a list of PLMNs supported by cells under the base station and PLMN information of the home operator of each cell.

8. The method for sending a paging message according to claim 1, characterized in that: The core network sends a paging message to a base station where a cell having the home PLMN of the user terminal as the home PLMN is located based on the home PLMN of the user terminal and the tracking area to which the user terminal belongs, including: When a downlink service arrives, the core network supporting multiple PLMNs queries 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; The core network supporting multiple PLMNs sends a paging message to the base station where the cell of the home PLMN of the user terminal is located under the tracking area.

9. The method for sending a paging message according to claim 8, characterized in that: The cells under the tracking area include at least one of the following: A fourth type of cell, wherein the fourth type of cell is a cell that supports only a single PLMN, and the cell is the same as the home PLMN of the user terminal; A fifth type of cell, wherein the fifth type of cell is a cell supporting multiple PLMNs, the PLMN list supported by the cell includes the home PLMN of the user terminal, and the PLMN of the home operator of the frequency point used by the cell is the same as the home PLMN of the user terminal; The sixth category cell is a cell supporting multiple PLMNs. The PLMN list supported by the cell includes the home PLMN of the user terminal. The PLMN of the home operator of the frequency point used by the cell is different from the home PLMN of the user terminal.

10. The method for sending a paging message according to claim 9, characterized in that: The core network supporting multiple PLMNs sends a paging message to a base station where a cell of a home PLMN of the user terminal is located under the tracking area, including: The core network supporting multiple PLMNs sends a paging message to the base stations to which the fourth-category cell and the fifth-category cell belong under the tracking area.

11. The method for sending a paging message according to claim 10, characterized in that: After the core network supporting multiple PLMNs sends a paging message to the base station to which the fourth type cell and the fifth type cell belong under the tracking area, the method further includes: The core network supporting multiple PLMNs sends a paging message to the base station to which the sixth type of cell belongs under the tracking area.

12. The method for sending a paging message according to claim 1, characterized in that: The core network sends a paging message to a base station where a cell having the home PLMN of the user terminal as the home PLMN is located based on the home PLMN of the user terminal and the tracking area to which the user terminal belongs, including: When a downlink service arrives, the core network queries 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; The core network sends a paging message to all base stations under the tracking area, and the base station compares the PLMN of the user terminal with the PLMN of each cell under the base station, and sends a paging message to the cell whose PLMN is the same as the PLMN of the user terminal, or by the base station through the frequency of the operator to which the user terminal belongs.

13. The method for sending a paging message according to claim 12, characterized in that: The process of the base station obtaining the home PLMN of the user terminal includes: When the user terminal is in an idle state, when the core network sends a downlink paging message to all base stations in the tracking area, the base station obtains the message from the context of the user terminal sent by the core network; or When the user terminal is in an inactive state, the context of the user terminal is stored in the base station.

14. The method for sending a paging message according to claim 12, characterized in that: The PLMN of each cell under the base station is pre-configured; or, for a base station in which a centralized unit CU is separated from a distributed unit DU, each CU is connected to one or more different DUs with different frequencies, and the DU will report the PLMN of each DU's frequency to the CU during the establishment of the E1 interface.

15. The method for sending a paging message according to claim 12, characterized in that: Sending a paging message to a cell whose home PLMN is the same as the home PLMN of the user terminal includes: Sending a paging message to the fourth and fifth cell types; The fourth type of cell is a cell that only supports 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. The PLMN list supported by the cell includes the home PLMN of the user terminal. The PLMN of the home operator of the frequency point used by the cell is the same as the home PLMN of the user terminal.

16. The method for sending a paging message according to claim 15, characterized in that: After sending a paging message to the fourth type cell and the fifth type cell, the following is also included: Sending a paging message to a cell of the sixth category; The sixth type of cell is a cell supporting multiple PLMNs, the PLMN list supported by the cell includes the home PLMN of the user terminal, and the PLMN of the home operator of the frequency point used by the cell is different from the home PLMN of the user terminal.

17. A device for sending a paging message, characterized in that: Applied to network equipment, including: A transceiver module, used for paging a user terminal, when there are multiple frequency cells in the tracking area to which the user terminal belongs, sending a paging message to the user terminal through the cell or frequency of the home frequency of the home operator of the user terminal; The method of sending a paging message to the user terminal through a cell or a frequency point of a home frequency point of a home operator of the user terminal includes: The core network sends the paging message to the base station where the cell having the home PLMN of the user terminal as the home PLMN is located based on the home public land mobile network PLMN of the user terminal and the tracking area to which the user terminal belongs.

18. A network device, characterized in that: include: A transceiver, used for paging a user terminal, when there are multiple frequency cells in the tracking area to which the user terminal belongs, sending a paging message to the user terminal through the cell or frequency of the home frequency of the home operator of the user terminal; The method of sending a paging message to the user terminal through a cell or a frequency point of a home frequency point of a home operator of the user terminal includes: The core network sends the paging message to the base station where the cell having the home PLMN of the user terminal as the home PLMN is located based on the home public land mobile network PLMN of the user terminal and the tracking area to which the user terminal belongs.

19. A method for receiving a paging message, characterized in that: Applied to a user terminal, the method comprises: Receiving a paging message sent by the network side through a cell or a frequency point of a home frequency point of a home operator of a user terminal, where there are cells of multiple frequencies in a tracking area to which the user terminal belongs; The paging message is sent by the core network to the base station where the cell with the home PLMN of the user terminal as the home PLMN is located based on the home public land mobile network PLMN of the user terminal and the tracking area to which the user terminal belongs.

20. A device for receiving a paging message, characterized in that: Applied to a user terminal, the device comprises: The transceiver module is used to receive a paging message sent by the network side through a cell or a frequency point of a home operator of a user terminal, where there are cells with multiple frequencies in the tracking area to which the user terminal belongs; The paging message is sent by the core network to the base station where the cell with the home PLMN of the user terminal as the home PLMN is located based on the home public land mobile network PLMN of the user terminal and the tracking area to which the user terminal belongs.

21. A user terminal, characterized in that: include: A transceiver, configured to receive a paging message sent by the network side through a cell or a frequency point of a home operator of a user terminal, wherein the tracking area to which the user terminal belongs has cells of multiple frequencies; The paging message is sent by the core network to the base station where the cell with the home PLMN of the user terminal as the home PLMN is located based on the home public land mobile network PLMN of the user terminal and the tracking area to which the user terminal belongs.

22. A communication device, characterized in that: include: A processor and a memory storing a computer program, wherein when the computer program is executed by the processor, the method according to any one of claims 1 to 16 or the method according to claim 19 is executed.

23. A computer-readable storage medium, characterized in that: Instructions are stored, and when the instructions are executed on a computer, the computer is caused to execute the method according to any one of claims 1 to 16 or the method according to claim 19.

Images