WO2019196842A1

WO2019196842A1 - Signaling processing method and apparatus

Info

Publication number: WO2019196842A1
Application number: PCT/CN2019/081958
Authority: WO
Inventors: 陆伟; 诸华林
Original assignee: 华为技术有限公司
Priority date: 2018-04-09
Filing date: 2019-04-09
Publication date: 2019-10-17

Abstract

The embodiments of the present application disclose a signaling processing method and apparatus, relating to the technical field of communications, and specifically provide a processing solution when a network side device (i.e. a network element in a PLMN) receives signaling carrying identification information of a PDU session established on the basis of a non-3GPP access network. Said method may comprise: an access and mobility management network element receiving a control signaling from a session management network element, the control signaling comprising identification information of a PDU session of a terminal, the PDU session being a PDU session established on the basis of a non-3GPP access network; and if the terminal is in an idle state in the non-3GPP access network, the access and mobility management network element determining to send a first message to the terminal by means of the 3GPP access network or not by means of the 3GPP access network, the first message being triggered by the access and mobility management network element on the basis of the control signaling.

Description

Signal processing method and device

The present application claims priority to Chinese Patent Application No. 201101314560.2, filed on Apr. 09, 2018, the entire disclosure of which is incorporated herein by reference. The priority of the Chinese Patent Application No. 201810674468.7, the entire disclosure of which is incorporated herein in

Technical field

The embodiments of the present invention relate to the field of communications technologies, and in particular, to a signaling processing method and apparatus.

Background technique

In order to meet the challenges of wireless broadband technology and maintain the leading edge of the 3rd generation partnership project (3GPP) network, the 3GPP standards group developed the next generation mobile communication system (next generation system) network architecture at the end of 2016. It is a fifth generation (5rd generation, 5G) network architecture. The architecture not only supports the terminal accessing the public land mobile network (PLMN) through the 3GPP access technology, but also supports the terminal accessing the PLMN through the non-3GPP (non-3GPP) access technology.

Currently, the PLMN allows the terminal to access simultaneously through the 3GPP access technology and the non-3GPP access technology, and the terminal can establish a protocol data unit (PDU) session based on the 3GPP access network and the non-3GPP access network, respectively. If the terminal is in the idle state in the non-3GPP access network, it is considered that the terminal cannot perform signaling or data transmission through the non-3GPP access network. In this case, when the network side device (ie, the network element in the PLMN) receives the bearer. When the signaling of the identification information of the PDU session established by the non-3GPP access network is processed, how to perform the processing, and no related solution is currently provided.

Summary of the invention

An embodiment of the present application provides a signaling processing method and apparatus, and specifically provides that when a network side device (ie, a network element in a PLMN) receives signaling that carries identification information of a PDU session established based on a non-3GPP access network. Treatment plan.

In a first aspect, the embodiment of the present application provides a signaling processing method, where the method may include: an access and mobility management network element receives control signaling from a session management network element; wherein the control signaling includes a PDU of the terminal. Identification information of the session, the PDU session is based on a PDU session established by the non-3GPP access network; if the terminal is in an idle state in the non-3GPP access network, the access and mobility management network element determines whether to pass or not through the 3GPP The incoming network sends a first message to the terminal; wherein the first message is triggered by the access and mobility management network element based on the control signaling. It can be seen that the embodiment of the present application provides a processing solution when the network side device (specifically, the access and mobility management network element) receives the signaling that carries the identifier information of the PDU session established based on the non-3GPP access network, such that one On the other hand, if it is determined that the message is sent to the terminal through the 3GPP access network, the terminal can obtain relevant information in time, thereby improving the user experience; on the other hand, if it is determined that the message is not sent to the terminal through the 3GPP access network, the save can be saved. Paging signaling overhead.

For example, the access and mobility management network element can correspond to an access and mobility management function (AMF) network element in the 5G network architecture. The session management network element can correspond to a session management function (SMF) network element in the 5G network architecture.

For example, the control signaling is control signaling in any of the following processes (ie, the process including the control signaling is any of the following processes): PDU session release process, PDU session modification process Session and service continuity and user plane function management (such as the process of changing the PDU session anchor in a multi-PDU session), and the process of triggering the downlink packet (for example, downlink data) Packet-triggered service request procedure).

It should be noted that, in the present application, the “process including control signaling” has the same meaning as the “process related to control signaling”, and the two can be used interchangeably.

For example, the control signaling includes N1N2 message transmission signaling, or a message having the same function as the N1N2 message transmission signaling, and the control signaling names may be the same or different when the control signaling process is different.

For example, the first message is triggered by the access and mobility management network element based on the control signaling. It can be understood that the first message is a message sent by the mobility management network element to the terminal triggered by the control signaling. The specific implementation of the first message is not limited in this embodiment of the present application. For example, the first message may include the identifier information of the PDU session or the tenth indication information; the tenth indication information is used to indicate the related processing procedure of the terminal to initiate the PDU session. The related processing procedure of the PDU session may include, but is not limited to, at least one of the following: a service request procedure, a PDU session release procedure, a PDU session establishment (including a new build and a rebuild) process, and the like.

In one possible design, the control signaling is used to indicate that the access and mobility management network element sends the first message to the terminal with or without the 3GPP access network. In this case, the access and mobility management network element determines whether to send the first message to the terminal through the 3GPP access network, and may include: the access and mobility management network element determines whether to pass or not through 3GPP according to the control signaling. The access network sends a first message to the terminal. It can be seen that, in the embodiment of the present application, the mobility management network element determines whether the first message is sent to the terminal through the 3GPP access network through the indication of the session management network element (which may be a display indication or an implicit indication). Technical solutions. Specifically, the access and mobility management network element identifies, according to the indication of the session management network element, the first message sent by the session management network element or not through the 3GPP access network, so that the recognition result is a reference. To determine whether to send the first message to the terminal through or not through the 3GPP access network.

For example, the control signaling is used to indicate that the access and mobility management network element sends the first message to the terminal through or not through the 3GPP access network, including one of the following situations: Case 1: The control signaling further includes first indication information, The first indication information is used to indicate that the access and mobility management network element sends the first message to the terminal through or not through the 3GPP access network. Scenario 2: The control signaling further includes or does not include second indication information, where the second indication information is used to indicate that the access and mobility management network element sends the first message to the terminal through the 3GPP access network, where if the control signaling is not Including the second indication information, the control signaling is used to indicate that the access and mobility management network element does not send the first message to the terminal through the 3GPP access network. Scenario 3: The control signaling further includes or does not include third indication information, where the third indication information is used to indicate that the access and mobility management network element does not send the first message to the terminal through the 3GPP access network, where if the control signaling The third indication information is not included, and the control signaling is used to indicate that the access and mobility management network element sends the first message to the terminal through the 3GPP access network.

In one possible design, control signaling is used to indicate that control signaling is triggered by the control plane or is triggered by the user plane. In this case, the access and mobility management network element determines whether to send the first message to the terminal through the 3GPP access network, and may include: the access and mobility management network element determines whether to pass or not through 3GPP according to the control signaling. The access network sends a first message to the terminal. It can be seen that the embodiment of the present application supports the reason that the session management network element indicates the triggering of the control signaling. The access and mobility management network element may identify, according to the indication of the session management network element, whether the control signaling is triggered by the control plane or triggered by the user plane, so that the identification result is used as a reference to determine whether to pass or not through the 3GPP. The network access sends the first message to the terminal.

The control signaling is triggered by the control plane, and may include: the control signaling is triggered by another control signaling, or is triggered by the SMF network element itself. The control signaling is triggered by the user plane, and may include: the control signaling is triggered by the downlink data packet.

For example, the control signaling is used to indicate that the control signaling is triggered by the control plane, or is triggered by the user plane, and includes one of the following situations: Case 1: The control signaling further includes fourth indication information, where the fourth indication information is used. The indication control signaling is triggered by the control plane or triggered by the user plane. Scenario 2: The control signaling further includes or does not include fifth indication information, where the fifth indication information is used to indicate that the control signaling is triggered by the control plane, where the control signaling is not included in the control signaling. Used to indicate that control signaling is triggered by the user plane. Scenario 3: The control signaling further includes or does not include the sixth indication information, where the sixth indication information is used to indicate that the control signaling is triggered by the user plane, wherein if the control signaling does not include the sixth indication information, the control signaling Used to indicate that control signaling is triggered by the control plane.

In a possible design, the control signaling further includes seventh indication information, and the seventh indication information is used to indicate a process related to the control signaling. In this case, the access and the mobility management network element determining whether to send the first message to the terminal by using the 3GPP access network may include: the access and mobility management network element determining whether to pass or fail according to the seventh indication information. The 3GPP access network sends a first message to the terminal. It can be seen that the embodiment of the present application supports a session management network element to indicate a process related to control signaling. The access and mobility management network element may identify the process related to the control signaling according to the indication of the session management network element, and then use the identification result as a reference to determine whether to send the first message to the terminal through or not through the 3GPP access network.

In a possible design, the control signaling further includes an N1 session management container; in this case, the access and mobility management network element determines whether to send the first message to the terminal through or not through the 3GPP access network, which may include: The ingress and mobility management network element determines whether to send the first message to the terminal with or without the 3GPP access network according to the information in the N1 session management container. It can be seen that the embodiment of the present application supports the access and mobility management network element to parse the information in the N1 session management container. The access and mobility management network element may identify the process related to the control signaling by parsing the information included in the N1 session management container, thereby using the identification result as a reference to determine whether to send the first message to the terminal through or not through the 3GPP access network. .

In a possible design, the control signaling further includes or does not include an N1 session management container; in this case, the access and mobility management network element determines whether to send the first message to the terminal through or not through the 3GPP access network, The method includes: the access and mobility management network element further includes or does not include an N1 session management container according to the control signaling, and determines to send the first message to the terminal by using or not through the 3GPP access network. The access and mobility management network element may determine whether the control signaling is triggered by the control plane or triggered by the user plane by using the control signaling whether the N1 session management container is included, so that the identification result is used as a reference to determine whether to pass or The first message is not sent to the terminal through the 3GPP access network.

In a possible design, the control signaling may further include other information, where the other information refers to the N1 session management container, the first indication information to the seventh indication information, and may be used for indication (including display) The indication and the implicit indication) whether the first control signaling is triggered by the user plane or triggered by the control plane. For example, the other information may be user plane information included in the N2 information in the first control signaling.

In a possible design, if the access and mobility management network element determines not to send the first message to the terminal through the 3GPP access network, the method may further include: accessing and mobility management network element to the session management network The MME sends a response message, where the response message includes at least one of the eighth indication information and the ninth indication information; the eighth indication information is used to indicate that the terminal is unreachable, and the ninth indication information is used to indicate that the terminal is in the non-3GPP. The access network is in an idle state. It can be seen that the embodiment of the present application provides a process flow after the access and mobility management network element determines that the first message is not sent to the terminal through the 3GPP access network.

In a possible design, if the access and mobility management network element determines to send the first message to the terminal through the 3GPP access network, the method may further include: when the terminal is in an idle state in the 3GPP access network, The first message includes a paging message, and the access and mobility management network element sends a paging message to the terminal through the 3GPP access network, where the paging message is used by the terminal to initiate a service request process. Or, when the terminal is in the connected state in the 3GPP access network, the first message includes a notification message, and the access and mobility management network element sends a notification message to the terminal through the 3GPP access network, where the notification message is used by the terminal to initiate the establishment of the PDU session. At least one of a process and a PDU session release process. It can be seen that the embodiment of the present application provides a process flow after the access and mobility management network element determines to send the first message to the terminal through the 3GPP access network.

In a possible design, when the control signaling related process is a PDU session release process, the first message includes: a PDU session release command and/or indication information used to indicate that the terminal initiates a PDU session establishment; or, when When the process related to the control signaling is a PDU session modification process, the first message includes: a PDU session modification command; or, when the process related to the control signaling is a session and service continuity and a user plane function management process, the first The message includes: a PDU session modification command and a cause value; or, when the process related to the control signaling is a downlink packet triggering process, the first message includes: a PDU session identifier.

In a possible design, the first message is specifically a message sent by the access and mobility management network element to the terminal triggered by receiving the control signaling.

In a second aspect, the embodiment of the present application provides a signaling processing method, where the method may include: a session management network element determining control signaling; wherein, the control signaling includes identifier information of a PDU session of the terminal; the PDU session is based on a non- a PDU session established by the 3GPP access network; the session management network element sends control signaling to the access and mobility management network element; wherein the control signaling is used by the access and mobility management network element after receiving the control signaling, If it is determined that the terminal is in an idle state in the non-3GPP access network, determining to send the first message to the terminal by using or not through the 3GPP access network, where the first message is triggered by the access and mobility management network element based on the control signaling of.

In one possible design, the control signaling is used to indicate that the access and mobility management network element sends the first message to the terminal with or without the 3GPP access network. For specific implementations, reference may be made to the first aspect described above.

In one possible design, control signaling is used to indicate that control signaling is triggered by the control plane or is triggered by the user plane. For specific implementations, reference may be made to the first aspect described above.

In a possible design, the control signaling further includes seventh indication information, and the seventh indication information is used to indicate a process related to the control signaling.

In a possible design, the method may further include: the session management network element acquires, from the access and mobility management network element, a connection management status of the terminal in the non-3GPP access network. In this case, the session management network element determines the control signaling, and may include: the session management network element determines the control signaling according to the connection management state; wherein, if the connection management state is an idle state, the control signaling is used to indicate the access and the mobile The sex management network element sends a first message to the terminal through the 3GPP access network.

In a third aspect, the embodiment of the present application provides a signaling processing method, where the method may include: a terminal receiving a first message from an access and mobility management network element; wherein the first message is an access and mobility management network The element is triggered based on the received control signaling, and is a message sent by the access and mobility management network element to the terminal through the 3GPP access network when determining that the terminal is in an idle state in the non-3GPP access network; control signaling Including the identifier information of the PDU session of the terminal, the PDU session is based on a PDU session established by the non-3GPP access network; the terminal initiates a related process of the PDU session through the 3GPP access network according to the first message (eg, after receiving the first message) process.

In a possible design, the process of initiating a PDU session by the terminal through the 3GPP access network according to the first message may include: when the terminal is in an idle state in the 3GPP access network, the terminal initiates a service request process; or When the terminal is in the connected state in the 3GPP access network, the terminal initiates at least one of a PDU session establishment process and a PDU session release process.

In a possible design, the process of initiating a PDU session by the terminal according to the first message by using the 3GPP access network may include: when the terminal is in the connected state in the 3GPP access network, the terminal initiates a service request process, and then, At least one of a PDU session establishment process and a PDU session release process is initiated.

In a possible design, the terminal may initiate a PDU session related process by using the 3GPP access network according to the first message, and may include: the terminal initiates a PDU session related process by using the 3GPP access network according to the first message and the policy information. process. For example, the policy information may be a policy that the PDU session indicated by the identification information of the PDU session included in the control signaling can be handed over to the 3GPP access network, or the PDU session cannot be handed over to the 3GPP access network or the like.

In a fourth aspect, the embodiment of the present application provides a signaling processing apparatus, which may be used to perform any of the methods provided by the foregoing first aspect. The device may specifically be the access and mobility management network element described in the first aspect above. As an example, the device can be a chip.

In a possible design, the device may be divided into functional modules according to the method provided by the above first aspect. For example, each functional module may be divided according to each function, or two or more functions may be integrated in the function. In a processing module (or processing unit). For example, the apparatus can include a communication unit and a processing unit.

In a possible design, the communication unit is configured to receive control signaling from the session management network element; wherein the control signaling includes identification information of the PDU session of the terminal, and the PDU session is a PDU session established based on the non-3GPP access network. . The processing unit is configured to: if the terminal is in an idle state in the non-3GPP access network, determine to send the first message to the terminal by using or not through the 3GPP access network; where the first message is based on the access and mobility management network element. Signaling triggered.

In a possible design, the control signaling is used to indicate that the access and mobility management network element sends the first message to the terminal through or not through the 3GPP access network. In this case, the processing unit may be specifically configured to: according to the control signaling, determine to send the first message to the terminal by using or not through the 3GPP access network. The specific implementation manner of the control signaling for indicating that the access and the mobility management network element sends the first message to the terminal through the 3GPP access network may refer to the foregoing first aspect, and details are not described herein again.

In a possible design, the control signaling is used to indicate that the control signaling is triggered by the control plane or triggered by the user plane. In this case, the processing unit may be specifically configured to: according to the control signaling, determine to send the first message to the terminal by using or not through the 3GPP access network. The control signaling is used to indicate that the control signaling is triggered by the control plane, or is triggered by the user plane. For the specific implementation manner, reference may be made to the foregoing aspect, and details are not described herein again.

In a possible design, the control signaling further includes seventh indication information, where the seventh indication information is used to indicate the process related to the control signaling. In this case, the processing unit may be configured to: determine, according to the seventh indication information, that the first message is sent to the terminal by or not through the 3GPP access network.

In a possible design, the control signaling related process includes any of the following processes: a PDU session release process, a PDU session modification process, and session and service continuity and a user plane function management process.

In a possible design, the control signaling further includes an N1 session management container; in this case, the processing unit may be specifically configured to: determine, according to information in the N1 session management container, send to the terminal through or not through the 3GPP access network. The first message.

In a possible design, the control signaling further includes or does not include an N1 session management container; in this case, the processing unit may be specifically configured to: determine, according to the control signaling, whether the N1 session management container is included or not, Or not sending the first message to the terminal through the 3GPP access network.

In one possible design, the control signaling includes N1N2 message transmission signaling.

In a possible design, if the processing unit determines that the first message is not sent to the terminal through the 3GPP access network, the communication unit may be further configured to: send a response message to the session management network element; wherein the response message includes an eighth indication At least one of the information and the ninth indication information; the eighth indication information is used to indicate that the terminal is unreachable, and the ninth indication information is used to indicate that the terminal is in an idle state in the non-3GPP access network.

In a possible design, if the processing unit determines to send the first message to the terminal through the 3GPP access network, the communication unit may be further configured to: when the terminal is in an idle state in the 3GPP access network, the first message includes searching The message is sent to the terminal through the 3GPP access network, and the paging message is used by the terminal to initiate the service request process; or, when the terminal is in the connected state in the 3GPP access network, the first message includes a notification message, and the 3GPP is notified by the 3GPP. The access network sends a notification message to the terminal, where the notification message is used by the terminal to initiate at least one of a PDU session establishment process and a PDU session release process.

In a possible design, the first message includes the identifier information of the PDU session or the tenth indication information; the tenth indication information is used to indicate a related process of the terminal initiating the PDU session.

In one possible design, the control signaling is control signaling in any of the following processes: PDU session release procedure, PDU session modification procedure, and session and traffic continuity and user plane function management procedures.

In one possible design, the apparatus can include a memory and a processor for storing program code that, when executed by the processor, causes any of the methods provided by the first aspect described above to be performed.

In a fifth aspect, an embodiment of the present application provides a signaling processing apparatus, which may be used to perform any of the methods provided in the foregoing second aspect. The device may specifically be the session management network element described in the second aspect above. As an example, the device can be a chip.

In a possible design, the device may be divided into functional modules according to the method provided by the second aspect, for example, each functional module may be divided according to each function, or two or more functions may be integrated in In a processing module (or processing unit). For example, the apparatus can include a communication unit and a processing unit.

In one possible design, the processing unit is configured to determine control signaling; wherein the control signaling includes identification information of a PDU session of the terminal; the PDU session is a PDU session established based on a non-3GPP access network. The communication unit is configured to send the control signaling to the access and mobility management network element, where the control signaling is used by the access and mobility management network element after receiving the control signaling, if the terminal is determined to be in a non-3GPP If the access network is in an idle state, it is determined that the first message is sent to the terminal through the 3GPP access network, or the first message is triggered by the access and mobility management network element based on the control signaling.

In a possible design, the control signaling is used to indicate that the access and mobility management network element sends the first message to the terminal through the 3GPP access network, and the specific implementation manner may refer to the foregoing first aspect.

In a possible design, the control signaling is used to indicate that the control signaling is triggered by the control plane, or is triggered by the user plane. For the specific implementation, refer to the foregoing first aspect.

In a possible design, the control signaling further includes seventh indication information, where the seventh indication information is used to indicate the process related to the control signaling. For the specific implementation of the control signaling related process, reference may be made to the foregoing first aspect.

In a possible design, the communication unit is further configured to acquire, from the access and mobility management network element, a connection management status of the terminal in the non-3GPP access network. In this case, the processing unit may be configured to: determine, according to the connection management state, the control signaling; where, if the connection management state is an idle state, the control signaling is used to indicate that the access and the mobility management network element are connected through the 3GPP. The network access sends the first message to the terminal.

In one possible design, the apparatus can include a memory and a processor for storing program code that, when executed by the processor, causes any of the methods provided by the second aspect above to be performed.

In a sixth aspect, the embodiment of the present application provides a signaling processing apparatus, which may be used to perform any of the methods provided in the foregoing third aspect. The device may specifically be the terminal described in the above third aspect. As an example, the device can be a chip.

In a possible design, the device may be divided into functional modules according to the method provided by the foregoing third aspect. For example, each functional module may be divided according to each function, or two or more functions may be integrated in In a processing module (or processing unit). For example, the device includes a communication unit and a processing unit.

In a possible design, the communication unit is configured to receive the first message from the access and mobility management network element; wherein the first message is triggered by the access and mobility management network element based on the received control signaling, And the message that the access and mobility management network element sends to the terminal through the 3GPP access network when determining that the terminal is in the idle state in the non-3GPP access network; the control signaling includes the identifier information of the PDU session of the terminal, and the PDU The session is based on a PDU session established by a non-3GPP access network. The processing unit is configured to initiate a related process of the PDU session by using the 3GPP access network according to the first message.

In a possible design, the processing unit may be specifically configured to: when the terminal is in an idle state in the 3GPP access network, initiate a service request procedure. Or, when the terminal is in the connected state in the 3GPP access network, at least one of a PDU session establishment process and a PDU session release process is initiated.

In a possible design, the processing unit may be specifically configured to: when the terminal is in the connected state in the 3GPP access network, initiate a service request process, and then initiate at least one of a PDU session establishment process and a PDU session release process.

In a possible design, the processing unit may be specifically configured to: initiate, according to the first message and the policy information, a related process of the PDU session by using the 3GPP access network.

In one possible design, the apparatus can include a memory and a processor for storing program code that, when executed by the processor, causes any of the methods provided by the third aspect above to be performed.

In a seventh aspect, the embodiment of the present application further provides a signaling processing method, where the method may include: determining, by the access and mobility management network element, third control signaling, where the third control signaling includes the identifier information of the terminal and the non- Information related to the 3GPP access network; if the terminal is in an idle state in the non-3GPP access network, the access and mobility management network element determines to pass the information related to the non-3GPP access network included in the third control signaling. Or not sending a second message to the terminal through the 3GPP access network, where the second message is triggered by the access and mobility management network element based on the third control signaling. In this way, on the one hand, if it is determined that the message is sent to the terminal through the 3GPP access network, the terminal can obtain relevant information in time, thereby improving the user experience; on the other hand, if it is determined that the message is not sent to the terminal through the 3GPP access network, Then the paging signaling overhead can be saved.

For example, the information related to the non-3GPP access network may be non-3GPP related slice information or the like.

For example, the third control signaling may include a UE configuration update message (UE configuration update), or a signaling related to a PDU session release process triggered by an AMF network element, such as a downlink non-access stratum (NAS) transmission. Downlink NAS transport message, etc.

In an eighth aspect, the embodiment of the present application provides a signaling processing method, where the method may include: receiving, by a terminal, a second message sent by an access and mobility management network element; where the second message is access and mobility management The network element is triggered by the third control signaling, and is a message that the access and mobility management network element sends to the terminal through the 3GPP access network when determining that the terminal is in an idle state in the non-3GPP access network; The signaling includes the identification information of the PDU session of the terminal, and the PDU session is based on the PDU session established by the non-3GPP access network; the terminal initiates a related process of the PDU session through the 3GPP access network according to the second message.

In a ninth aspect, the embodiment of the present application provides a signaling processing apparatus, which may be used to perform any of the methods provided in the foregoing seventh aspect. The device may specifically be the access and mobility management network element described in the seventh aspect above. As an example, the device can be a chip.

In a possible design, the device may be divided into functional modules according to the method provided in the seventh aspect, for example, each function module may be divided according to each function, or two or more functions may be integrated in the function. In a processing module (or processing unit). For example, the device can include a processing unit.

In a possible design, the processing unit is configured to determine third control signaling, where the third control signaling includes identification information of the terminal and information related to the non-3GPP access network; and if the terminal is in a non-3GPP access network If the user is in the idle state, determining, according to the information related to the non-3GPP access network included in the third control signaling, sending the second message to the terminal through the 3GPP access network, where the second message is accessing and moving. The sexual management network element is triggered based on the third control signaling.

In one possible design, the apparatus can include a memory and a processor for storing program code that, when executed by the processor, causes any of the methods provided by the seventh aspect above to be performed.

In a tenth aspect, the embodiment of the present application provides a signaling processing apparatus, which may be used to perform any of the methods provided in the foregoing eighth aspect. The device may specifically be the terminal described in the above eighth aspect. As an example, the device can be a chip.

In a possible design, the device may be divided into functional modules according to the method provided in the foregoing eighth aspect. For example, each functional module may be divided according to each function, or two or more functions may be integrated in the In a processing module (or processing unit). For example, the apparatus can include a communication unit and a processing unit.

In a possible design, the communication unit is configured to receive a second message sent by the access and mobility management network element, where the second message is triggered by the access and mobility management network element based on the third control signaling, And the message that the access and mobility management network element sends to the terminal through the 3GPP access network when determining that the terminal is in the idle state in the non-3GPP access network; the third control signaling includes the identifier information of the PDU session of the terminal, The PDU session is based on a PDU session established by a non-3GPP access network. The processing unit is configured to initiate a related process of the PDU session by using the 3GPP access network according to the second message.

In one possible design, the apparatus can include a memory and a processor for storing program code that, when executed by the processor, causes any of the methods provided by the eighth aspect above to be performed.

In an eleventh aspect, the embodiment of the present application provides a message processing method, where the method may include: receiving, by a terminal, a second message from an access and mobility management network element from a 3GPP access network; wherein the second message includes Control information of the first PDU session, the control information is triggered by the control plane, and the first PDU session is based on a PDU session established by the non-3GPP access network. The terminal sends a third message to the access and mobility management network element according to the second message, where the third message is used to indicate a related process of rejecting the PDU session. The technical solution provides a processing scheme of the terminal, specifically a process of rejecting the PDU session, in a scenario in which the terminal receives the control information for the PDU session established by the non-3GPP access network through the 3GPP access network. This is proposed when the terminal receives control information for another access technology type through one access technology type, and may prevent the control information from being used normally for the PDU session established by the other access technology type. .

For example, the second message may be a NAS message. In this case, the control information for the first PDU session may be carried in the N1 session management container of the NAS message, although the application is not limited thereto.

In a possible design, if the control information includes a modification command for the first PDU session, the third message is specifically used to indicate that the modification process for the first PDU session is rejected, in other words, the modification of the first PDU session is refused. .

In a possible design, if the control information includes the first PDU session release command, the third message is specifically used to indicate that the establishment process of the second PDU session is refused after the first PDU session is released. The second PDU session has the same data networking name (DNN) attribute as the first PDU session. As an example, the refusal to initiate the establishment process of the second PDU session may include: rejecting the establishment process of the second PDU session by the 3GPP access network. The process of refusing to initiate the establishment of the second PDU session may be replaced by the process of rejecting the establishment of the second PDU session.

In a possible design, before the terminal sends the third message to the access and mobility management network element according to the second message, the method may further include: the terminal receiving the indication information from the access and mobility management network element; The indication information is used to indicate that the first PDU session is activated in the 3GPP access network, or is used to indicate that the first PDU session is not activated in the 3GPP access network. In this case, the terminal sends the third message to the access and mobility management network element according to the second message, where the terminal may: send, by the terminal, the third message to the access and mobility management network element according to the second message and the indication information. . In this possible design, in addition to the second message, the terminal determines whether to reject the PDU session related process whether the first PDU session is activated in the 3GPP access network.

For example, if the indication information is used to indicate that the first PDU session is activated in the 3GPP access network, and the control information includes the first PDU session modification command, the third message is specifically used to indicate that the modification process for the first PDU session is denied.

For example, if the indication information is used to indicate that the first PDU session is not activated in the 3GPP access network, and the control information includes a release command including a session for the first PDU, the third message is specifically used to indicate that the first PDU session is released. Thereafter, the establishment process of the second PDU session is refused. The second PDU session has the same DNN attribute as the first PDU session.

For the analysis of the specific examples, reference may be made to the following specific embodiments, and details are not described herein again.

In a possible design, in the case that the indication information is used to indicate that the first PDU session is activated by the 3GPP access network, the method may further include: the terminal accessing the access technology type of the first PDU session according to the indication information. The non-3GPP access technology is modified to the 3GPP access technology, and information for indicating the type of access technology change of the first PDU session is recorded. In this case, the terminal sending the third message to the access and mobility management network element according to the second message may include: the terminal sending the third to the access and mobility management network element according to the second message and the recorded information. Message. In the possible design, the terminal can determine, according to the locally recorded information, that the access technology type of the PDU session to which the received control information is applied is a non-3GPP access technology, and then send the third to the access and mobility management network element. Message.

In a possible design, when the indication information is used to indicate that the first PDU session is activated by the 3GPP access network, the method may further include: the terminal, according to the indication information, the access technology type of the first PDU session is The non-3GPP access technology is modified to be a 3GPP access technology. In this case, the terminal sending the third message to the access and mobility management network element according to the second message may include: the second message further includes an access technology type for indicating the PDU session of the control information application. In the case that the access technology is specifically the indication information of the non-3GPP access technology, the terminal sends a third message to the access and mobility management network element according to the second message. In the possible design, the terminal may determine, according to the indication information included in the second message, that the received control information is applied to a PDU session established on a non-3GPP access network, thereby accessing the mobility and mobility management network element. Send a third message.

In one possible design, the third message includes a cause value that is used to indicate the cause of the associated process of rejecting the PDU session. For example, the cause value may include information indicating that the access technology type of the first PDU session is a non-3GPP access technology, and the embodiment of the present application is not limited thereto. It can be seen that the embodiment of the present application supports a technical solution for the terminal to send a reason for the process of rejecting the PDU session to the access and mobility management network element.

In a twelfth aspect, the embodiment of the present application provides a message processing method, where the method may include: a session management network element determining control information for a PDU session of the terminal, and indicating the PDU session of the control information application. The indication information of the access technology type; the session management network element sends the control information and the indication information to the terminal by using the access and mobility management network element. The access technology type indicated by the indication information may be, for example, a 3GPP access technology or a non-3GPP access technology. In this way, the terminal can know the access technology type of the PDU session to which the received control information is applied. As an example, the technical solution helps the terminal determine whether to reject the control information based on another access network (such as a non-3GPP access network) through an access network (for example, a 3GPP access network). The process of PDU sessions. This is only one application scenario of the embodiment, and the application is of course not limited thereto.

The technical solution provided by the twelfth aspect may be replaced by: the session management network element determining control information for the PDU session of the terminal, where the control information includes an access technology type for indicating a PDU session to which the control information is applied. Instructions. The session management network element sends the control information to the terminal through the access and mobility management network element. For the explanation of the related content in the technical solution and the description of the beneficial effects, reference may be made to the above twelfth aspect, and details are not described herein again.

In a thirteenth aspect, the embodiment of the present application provides a message processing method, where the method may include: an access and mobility management network element receives control signaling from a session management network element; wherein the control signaling includes a PDU of the terminal. Identification information of the session, the PDU session is based on a PDU session established by the non-3GPP access network. If the control signaling is triggered by the control plane, the access and mobility management network element refuses to activate the PDU session at the 3GPP access network. For example, the control signaling can be a Namf_Communication_N1N2MessageTransfer message. In this way, it helps to avoid incorrect handling of control signaling caused by the type of access technology of the PDU session.

In a fourteenth aspect, the embodiment of the present application provides a message processing apparatus, which may be used to perform any of the methods provided in the eleventh aspect. The device may specifically be the terminal described in the eleventh aspect above. As an example, the device can be a chip.

In a possible design, the device may be divided into functional modules according to the method provided in the above eleventh aspect. For example, each functional module may be divided according to each function, or two or more functions may be integrated. In a processing module (or processing unit). For example, the device includes a communication unit, optionally including a processing unit.

In a possible design, the communication unit is configured to receive a second message from the access and mobility management network element from the 3GPP access network; wherein the second message includes control information for the first PDU session, the control information is Triggered by the control plane, the first PDU session is based on a PDU session established by the non-3GPP access network. And sending, according to the second message, a third message to the access and mobility management network element, where the third message is used to indicate a related process of rejecting the PDU session.

In a possible design, if the control information includes the first PDU session release command, the third message is specifically used to indicate that the establishment process of the second PDU session is refused after the first PDU session is released. The second PDU session has the same DNN attribute as the first PDU session.

In one possible design, the communication unit can also be configured to receive indication information from the access and mobility management network element. The indication information is used to indicate that the first PDU session is activated on the 3GPP access network, or to indicate that the first PDU session is not activated in the 3GPP access network. In this case, the communication unit performing the sending of the third message to the access and mobility management network element according to the second message may include: sending, according to the second message and the indication information, the third to the access and mobility management network element. Message.

In a possible design, when the indication information is used to indicate that the first PDU session is activated by the 3GPP access network, the processing unit may be configured to: according to the indication information, the access technology type of the first PDU session is not The 3GPP access technology is modified to a 3GPP access technology and records information indicating the type of access technology change of the first PDU session. In this case, the communication unit performing the sending of the third message to the access and mobility management network element according to the second message may include: sending, according to the second message and the recorded information, the access and mobility management network element. Three messages.

In a possible design, when the indication information is used to indicate that the first PDU session is activated by the 3GPP access network, the processing unit may be configured to: use the indication technology type of the first PDU session by the non-3GPP according to the indication information. The access technology is modified to be a 3GPP access technology. In this case, the communication unit performing the sending of the third message to the access and mobility management network element according to the second message may include: the second message further includes an access technology type for indicating the PDU session of the control information application. In the case of the indication information of the non-3GPP access technology in the possible design, the third message is sent to the access and mobility management network element according to the second message.

In one possible design, the third message includes a cause value that is used to indicate the cause of the associated process of rejecting the PDU session. For example, the cause value may include information indicating that the access technology type of the first PDU session is a non-3GPP access technology, and the embodiment of the present application is not limited thereto.

In one possible design, the apparatus can include a memory and a processor for storing program code that, when executed by the processor, causes any of the methods provided in the eleventh aspect above to be performed.

In a fifteenth aspect, the embodiment of the present application provides a message processing apparatus, which may be used to perform any of the methods provided in the twelfth aspect. The device may specifically be the session management network element described in the twelfth aspect above.

In a possible design, the device may be divided into functional modules according to the method provided in the twelfth aspect, for example, each function module may be divided according to each function, or two or more functions may be integrated. In a processing module (or processing unit). For example, the device includes a communication unit and a processing unit.

In one possible design, the processing unit may be configured to determine control information for the PDU session of the terminal, and indication information indicating an access technology type of the PDU session to which the control information is applied. The communication unit may be configured to send the control information and the indication information to the terminal by using an access and mobility management network element. The access technology type indicated by the indication information may be, for example, a 3GPP access technology or a non-3GPP access technology.

In a possible design, the processing unit may be configured to determine control information for the PDU session of the terminal, the control information including an identifier of the PDU session of the terminal and an access technology type of the PDU session (ie, a non-3GPP access technology type) The PDU session is based on a PDU session established by a non-3GPP access network. And a communication unit, configured to send the control information to the access and mobility management network element.

In one possible design, the apparatus can include a memory and a processor for storing program code that, when executed by the processor, causes any of the methods provided in the twelfth aspect described above to be performed.

In a sixteenth aspect, the embodiment of the present application provides a message processing apparatus, which may be used to perform any of the methods provided in the thirteenth aspect. The apparatus may specifically be the access and mobility management network element described in the thirteenth aspect above.

In a possible design, the device may be divided into functional modules according to the method provided in the thirteenth aspect, for example, each function module may be divided according to each function, or two or more functions may be integrated. In a processing module (or processing unit). For example, the device includes a communication unit and a processing unit.

In a possible design, the communication unit may be configured to receive control signaling from a session management network element; the control signaling includes identification information of a PDU session of the terminal, the PDU session being a PDU session established based on a non-3GPP access network . The processing unit may be configured to deny activation of the PDU session in the 3GPP access network if the control signaling is triggered by the control plane.

In one possible design, the apparatus can include a memory and a processor for storing program code that, when executed by the processor, causes any of the methods provided in the thirteenth aspect above to be performed.

In a seventeenth aspect, the embodiment of the present application further provides a processing apparatus for implementing the functions of any of the foregoing signaling (or message) processing apparatuses, where the processing apparatus includes a processor and an interface; and the processing apparatus may be a chip. The processor may be implemented by hardware or by software. When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc.; when implemented by software, the processor may be a general-purpose processor. This is achieved by reading the software code stored in the memory, which can be integrated into the processor and can exist outside the processor and exist independently.

The embodiment of the present application further provides a signaling (or message) processing system, which may include any of the signaling processing devices provided in the foregoing fourth aspect, and the corresponding signaling processing device provided in the fifth aspect. Optionally, the corresponding signaling processing device provided by the sixth aspect may also be included.

The embodiment of the present application further provides a message processing system, which may include an access and mobility management network element, and any of the terminals provided in the fourteenth aspect. Optionally, the corresponding signaling processing apparatus provided in the fifteenth aspect above may also be included.

The embodiment of the present application further provides a message processing system, which may include a session management network element, and the signaling processing apparatus provided in the sixteenth aspect. Optionally, the terminal may also be included.

The embodiment of the present application further provides a computer readable storage medium storing program code, the program code comprising part or all of steps for performing any one of the methods provided by the first aspect. instruction.

The embodiment of the present application further provides a computer readable storage medium storing program code, the program code comprising part or all of steps for performing any one of the methods provided by the second aspect. instruction.

The embodiment of the present application further provides a computer readable storage medium storing program code, the program code comprising part or all of steps for performing any one of the methods provided by the third aspect. instruction.

The embodiment of the present application further provides a computer readable storage medium storing program code, the program code comprising part or all of steps for performing any one of the methods provided by the seventh aspect. instruction.

The embodiment of the present application further provides a computer readable storage medium storing program code, the program code comprising part or all of steps for performing any of the methods provided by the eighth aspect. instruction.

The embodiment of the present application further provides a computer readable storage medium storing program code, the program code comprising some or all steps for performing any one of the methods provided in the eleventh aspect. Instructions.

The embodiment of the present application further provides a computer readable storage medium storing program code, the program code comprising part or all of steps for performing any one of the methods provided in the twelfth aspect Instructions.

The embodiment of the present application further provides a computer readable storage medium storing program code, the program code comprising some or all steps for performing any one of the methods provided in the thirteenth aspect Instructions.

The embodiment of the present application further provides a computer program product, when the computer program product is run on a computer, causing the computer to perform some or all of the steps of any one of the methods provided by the first aspect.

The embodiment of the present application further provides a computer program product, when the computer program product is run on a computer, causing the computer to perform some or all of the steps of any of the methods provided by the second aspect.

The embodiment of the present application further provides a computer program product, when the computer program product is run on a computer, causing the computer to perform some or all of the steps of any of the methods provided by the third aspect.

The embodiment of the present application further provides a computer program product, when the computer program product is run on a computer, causing the computer to perform some or all of the steps of any one of the methods provided by the seventh aspect.

The embodiment of the present application further provides a computer program product, when the computer program product is run on a computer, causing the computer to perform some or all of the steps of any one of the methods provided by the eighth aspect.

The embodiment of the present application further provides a computer program product, when the computer program product is run on a computer, causing the computer to perform some or all of the steps of any one of the methods provided in the eleventh aspect.

The embodiment of the present application further provides a computer program product, when the computer program product is run on a computer, causing the computer to perform some or all of the steps of any one of the methods provided in the twelfth aspect.

The embodiment of the present application further provides a computer program product, when the computer program product is run on a computer, causing the computer to perform some or all of the steps of any one of the methods provided in the thirteenth aspect.

For the specific implementation manners and beneficial effects of any of the above-mentioned signaling processing devices, processing devices, computer readable storage media, computer program products, and the like, reference may be made to the above first or seventh aspects, and details are not described herein again.

It should be noted that, in the embodiment of the present application, the concepts of “signaling” and “message” are consistent, and the two may be used interchangeably. The unified description here, will not be described below.

DRAWINGS

1 is a schematic diagram of a 5G network architecture applicable to an embodiment of the present application;

2 is a schematic diagram of a PDU session established based on a 3GPP access network and a non-3GPP access network, which is applicable to an embodiment of the present application;

FIG. 3 is a schematic diagram of a communication system according to an embodiment of the present application;

FIG. 4 is a schematic diagram 1 of interaction of a signaling processing method according to an embodiment of the present disclosure;

FIG. 5A is a schematic diagram 2 of interaction of a signaling processing method according to an embodiment of the present disclosure;

FIG. 5B is a schematic diagram 3 of interaction of a signaling processing method according to an embodiment of the present disclosure;

FIG. 5C is a schematic diagram 4 of interaction of a signaling processing method according to an embodiment of the present disclosure;

FIG. 5D is a schematic diagram 5 of interaction of a signaling processing method according to an embodiment of the present disclosure;

5E is a schematic diagram 6 of interaction of a signaling processing method according to an embodiment of the present application;

FIG. 6 is a schematic diagram 7 of interaction of a signaling processing method according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram 1 of a device according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram 2 of a device according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram 3 of a device according to an embodiment of the present disclosure;

FIG. 10 is a schematic structural diagram 4 of a device according to an embodiment of the present disclosure;

FIG. 11 is a schematic diagram 1 of interaction of a message processing method according to an embodiment of the present application;

FIG. 12 is a schematic diagram 2 of a message processing method according to an embodiment of the present disclosure;

FIG. 13A is a schematic diagram 3 of a message processing method according to an embodiment of the present application; FIG.

FIG. 13B is a schematic diagram 4 of interaction of a message processing method according to an embodiment of the present application; FIG.

FIG. 14 is a schematic diagram 5 of interaction of a message processing method according to an embodiment of the present disclosure;

FIG. 15 is a schematic diagram 6 of an interaction of a message processing method according to an embodiment of the present disclosure.

detailed description

In order to facilitate the understanding of the technical solutions of the embodiments of the present application, a brief introduction of the related art of the present application is first given.

As shown in FIG. 1 , it is a 5G network architecture provided by an embodiment of the present application. The architecture not only supports the terminal accessing the PLMN through the 3GPP access technology, but also supports the terminal accessing the PLMN through the non-3GPP access technology. The 3GPP access technology in the embodiment of the present application may be a 5G radio access network (RAN) radio access technology or other 3GPP access technologies in the future; the non-3GPP access technology may be wireless protection. Wireless fidelity (Wi-Fi) access technology, worldwide interoperability for microwave access (WiMAX) technology, code division multiple access (CDMA) access technology or other non- future The 3GPP access technology and the like are not limited in this embodiment of the present application.

As shown in FIG. 1 , when the terminal accesses the PLMN through the 3GPP access technology, the terminal accesses the PLMN through the RAN device; when the terminal accesses the PLMN through the non-3GPP access technology, the terminal is connected through the non-trusted non-3GPP. The untrusted non-3GPP access point and the non-3GPP interworking function (N3IWF) device access the PLMN. The PLMN may include an AMF network element, an SMF network element, and a user plane function (UPF) network element. The RAN device or the N3IWF device can access the data network (DN) through the UPF network element. The AMF network element is responsible for access and mobility management. The SMF network element is responsible for session management and the like. The UPF network element is responsible for routing and forwarding of data packets.

The terminal communicates with the AMF network element through the Next Generation (N) interface 1 (N1 for short); the RAN device or the N3IWF device communicates with the AMF network element through the N2 interface (N2); the RAN device or the N3IWF device The S3 network element communicates with the UPF network element through the N3 interface (N3). The AMF network element communicates with the UPF network element through the N4 interface (N4). The AMF network element communicates with the SMF network element through the N11 interface (N11 for short). It should be noted that the name of the interface between the network elements in FIG. 1 is only an example. In the specific implementation, the interface name may be another name, which is not limited in this embodiment of the present application.

Optionally, the RAN device involved in the embodiment of the present application refers to a device that accesses the PLMN through the 3GPP access technology, and may be, for example, a base station, a broadband network gateway (BNG), an aggregation switch, or the like. This embodiment of the present application does not limit this. The base station may include various types of base stations, such as a macro base station, a micro base station (also referred to as a small station), a relay station, an access point, and the like, which is not limited in this embodiment of the present application.

Optionally, the N3IWF device involved in the embodiment of the present application refers to a device that accesses a PLMN through a non-3GPP access technology, and may be, for example, a broadband network service gateway (BNG), and a broadband remote connection. A remote access area server (BRAS), a fixed network access gateway, a wireless local area network (WLAN) access gateway, etc., are not limited in this embodiment of the present application.

It should be noted that the RAN device, the N3IWF device, the AMF network element, the SMF network element, and the UPF network element of FIG. 1 are not limited to the device itself. The RAN device, the N3IWF device, the AMF network element, the SMF network element, and the UPF network element may be other names in the 5G network and other network in the future. For example, the N3IWF device may be replaced by a next generation packet data gateway (NG-PDG) or a non-3GPP interworking function (N3IWF) network element, and a non-trusted non- 3GPP access gateway, trusted non-3GPP access gateway, access gateway function (AGF). For example, AMF network elements may also be replaced by AMF or AMF entities. For example, SMF network elements may also be replaced by SMF or SMF entities. A unified explanation is given here, and will not be described below.

In addition, the PLMN may also include a unified data management (UDM) network element, an authentication server function (AUSF) network element, a policy control function (PCF) network element, and the like. The embodiment does not limit this.

Optionally, in the embodiment of the present application, the terminal may access different AMF network elements in the same PLMN through the 3GPP access technology and the non-3GPP access technology; or according to the existing mechanism, the terminal may access the 3GPP access technology. Accessing the same AMF network element in the same PLMN as the non-3GPP access technology; or the terminal can access different AMF network elements in different PLMNs through the 3GPP access technology and the non-3GPP access technology, this application The embodiment does not limit this.

The PLMN allows the terminal to access simultaneously through the 3GPP access technology and the non-3GPP access technology, and the terminal can establish a PDU session based on the 3GPP access network and the non-3GPP access network, respectively, as shown in FIG. 2 . The PDU session 1 in FIG. 2 represents the PDU session established by the terminal based on the 3GPP access network, and the PDU session 2 in FIG. 2 represents the PDU session established by the terminal based on the non-3GPP access network.

The technical solutions in the embodiments of the present application are described below with reference to the accompanying drawings in the embodiments of the present application. In the description of the present application, unless otherwise stated, "/" means the meaning of or, for example, A/B may represent A or B; "and/or" herein is merely an association describing the associated object. The relationship indicates that there may be three kinds of relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately. Also, in the description of the present application, "a plurality" means two or more than two unless otherwise stated. In addition, in order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second", and the like are used to distinguish the same items or similar items whose functions and functions are substantially the same. Those skilled in the art can understand that the words "first", "second" and the like do not limit the number and execution order, and the words "first", "second" and the like are not necessarily limited.

The network architecture and the service scenario described in the embodiments of the present application are for the purpose of more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute a limitation of the technical solutions provided by the embodiments of the present application. The technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems. In addition, the name of the message described in the embodiment of the present application does not limit the message itself, and is uniformly described herein, and details are not described herein again. For example, under a service architecture, a message can also be called a service.

FIG. 3 is a schematic diagram of a communication system provided by an embodiment of the present application. As shown in FIG. 3, the system may include: an access and mobility management network element 301, a session management network element 302, and a terminal 303. The session management network element 302 is configured to determine and send the first control signaling to the access and mobility management network element 301. The first control signaling includes the identifier information of the PDU session of the terminal 303, and the PDU session is based on non. - A PDU session established by the 3GPP access network. The access and mobility management network element 301 is configured to receive the first control signaling from the session management network element 302, and to determine whether the terminal 303 passes the 3GPP if it is in an idle state in the non-3GPP access network. The access network sends a first message to terminal 303. The first message is triggered by the access and mobility management network element 301 based on the first control signaling. Herein, the "first control signaling" described herein may be "control signaling" described in the claims section and the section of the invention.

Optionally, the first control signaling related process may include any one of the following processes: a PDU session release process, a PDU session modification process, a session and service continuity, and a user plane function management process (eg, changing a PDU session in a multiple PDU session scenario). The process of anchoring), the process triggered by the downlink packet (for example, the service request process triggered by the downlink packet). Of course, this application is not limited to this. The process related to the first control signaling may be understood as a process including the first control signaling.

Optionally, the first control signaling may include N1N2 message transmission signaling, such as a Namf_Communication_N1N2MessageTransfer message. The N1N2 message transmission signaling is used by the access and mobility management network element 301 to send N1 or N2 information to the access network device or the terminal 303. In specific implementation, the N1N2 message transmission signaling may also be other names. The embodiment does not limit this. In the embodiment of the present application, when the processes related to the first control signaling are different, the names of the first control signaling are the same, for example, the N1N2 message transmission signaling is taken as an example. As an example, when the processes related to the first control signaling are different, the names of the first control signaling may also be different. In this case, the access and mobility management network element 301 may determine based on the name of the first control signaling. The first control signaling related process. For example, when the process related to the first control signaling is a PDU session release process, the name of the first control signaling may be the first control signaling 1; when the process related to the first control signaling is the PDU session modification process, The name of the first control signaling may be the first control signaling 2; when the process related to the first control signaling is the session and service continuity and the user plane function management process, the name of the first control signaling may be the first Control signaling 3, etc.

Optionally, the first message may be used by the terminal 303 to initiate a PDU session related processing procedure. For example, the first message may include: identifier information of the PDU session (ie, identifier information of the PDU session included in the first control signaling) or tenth indication information; and the tenth indication information is used to indicate that the terminal 303 initiates a PDU session. . The process of the PDU session related process initiated by the terminal 303 in the embodiment of the present application is not limited. For example, the associated processing of a PDU session may include a service request procedure, a process of releasing a PDU session, and/or a process of establishing a PDU session. The PDU session establishment process may be initiated after the service request process is completed.

Optionally, the terminal 303 is configured to: after receiving the first message, initiate a PDU session related process by using the 3GPP access network according to the first message. The specific implementation can refer to the following.

It should be noted that, in the embodiment of the present application, the communication between the session management network element 302 and the access and mobility management network element 301 may be direct communication or indirect communication through other network elements. The unified description here, will not be described below. The access and mobility management network element 301 communicates with the terminal 303, typically indirectly communicating with the mobility management network element 301 through devices in the access network.

It can be seen that, in the embodiment of the present application, when the network side device (specifically, the access and mobility management network element 301) receives the control signaling that carries the identifier information of the PDU session established based on the non-3GPP access network, for example, the foregoing A control scheme after a control signaling).

Optionally, the embodiment of the present application further provides a process after the access and mobility management network element 301 determines not to send the first message to the terminal 303 through the 3GPP access network. The access and mobility management network element 301 is further configured to: send a response message to the session management network element 302, where the response message includes at least one of the eighth indication information and the ninth indication information. The eighth indication information is used to indicate that the terminal 303 is unreachable, and the ninth indication information is used to indicate that the terminal 303 is in an idle state in the non-3GPP access network. The session management network element 302 can also be configured to: receive the response message. After receiving the eighth indication information and/or the ninth indication information, the session management network element 302 can learn that the terminal 303 is unreachable. The terminal is unreachable. It can be understood that the access and mobility management NE cannot establish a connection with the terminal. Subsequently, optionally, the session management network element 302 can subscribe the connection and management status of the terminal 303 to the access and mobility management network element 301, so that when the terminal 303 changes from the idle state to the connected state in the non-3GPP access network. After that, the access and mobility management network element 301 notifies the session management network element 302 that the terminal 303 is reachable. Alternatively, optionally, the session management network element 302 may send the first control information to the access and mobility management network element 301 again after the preset time period to determine again whether the terminal 303 is reachable. Of course, embodiments of the present application are not limited thereto.

Optionally, the embodiment of the present application further provides a process after the access and mobility management network element 301 determines to send the first message to the terminal 303 through the 3GPP access network. specific:

In one implementation, when the terminal 303 is in an idle state in the 3GPP access network, the first message may include a paging message. The paging message is used by the terminal 303 to initiate a service request procedure in order to establish a signaling connection, thereby performing a subsequent signaling processing process, such as establishing a PDU session. The access and mobility management network element 301 can also be configured to: send a paging message to the terminal 303. The terminal 303 can be configured to: receive a paging message, and initiate a service request process according to the paging message. Subsequently, the terminal 303 and the access and mobility management network element 301 can participate in performing a service request procedure. And, after performing the service request process, the access and mobility management network element 301 can also be used to send a notification message to the terminal 303. The terminal 303 can also be configured to receive the notification message and initiate a process of releasing the PDU session and/or a process of establishing a PDU session.

In one implementation, when the terminal 303 is in the connected state in the 3GPP access network, the first message may include a notification message. The access and mobility management network element 301 can also be used to: send a notification message to the terminal 303. The terminal 303 can also be configured to: receive a notification message, and initiate a process of releasing a PDU session and/or a process of establishing a PDU session.

Optionally, the terminal 303 is specifically configured to: initiate a PDU session related processing process according to the first message and the policy information. The policy information may be some policy information locally stored by the terminal 303, for example, configuration information preset by the user at the terminal 303. The policy information may also be some policies that the terminal 303 obtains from the network side device (for example, the PCF network element), for example, the user equipment (UE) routing policy (URSP) obtained by the terminal 303 from the PCF network element. ) Strategy information. For example, the policy information may be a policy that the PDU session indicated by the identification information of the PDU session included in the first control signaling can be switched to the 3GPP access network, or the PDU session cannot be handed over to the 3GPP access network or the like.

Optionally, when the technical solution provided by the embodiment of the present application is applied to the 5G network architecture, the access and mobility management network element 301 may be an AMF network element, and the session management network element 302 may be an SMF network element.

Optionally, the terminal involved in the embodiment of the present application may include various handheld devices having wireless communication functions, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to the wireless modem; Including user unit (subscriber unit), cellular phone, smart phone, wireless data card, personal digital assistant (PDA) computer, tablet computer, wireless modem (modem), handheld device Handheld, laptop computer, cordless phone or wireless local loop (WLL) station, machine type communication (MTC) terminal, UE, mobile station ( Mobile station, MS), terminal device, etc. For convenience of description, in the present application, the above mentioned devices are collectively referred to as terminals.

The signaling processing method provided by the embodiment of the present application is described below with reference to the accompanying drawings. It should be noted that, in the following, the foregoing access and mobility management network element 301 is specifically an AMF network element, and the session management network element 302 is specifically an SMF network element as an example.

FIG. 4 is a schematic diagram of interaction of a signaling processing method provided by an embodiment of the present application. The method shown in Figure 4 can include the following steps:

S101: The SMF network element sends the first control signaling to the AMF network element. The first control signaling may include identification information of a PDU session of the terminal. The identification information of the PDU session is used to identify the PDU session. The PDU session is any PDU session established by the terminal based on the non-3GPP access network, for example, the PDU session may be PDU Session 2 in FIG.

S102: The AMF network element receives the first control signaling sent by the SMF network element.

It can be understood that the AMF network element can maintain the identification information of the PDU session established by the terminal, and the type of access technology of the PDU session indicated by the identification information of the PDU session. The access technology type of the PDU session includes a 3GPP access technology type and a non-3GPP access technology type.

After receiving the first control signaling, the AMF network element may determine, according to the identifier information of the PDU session included in the first control signaling, and the access technology type of the PDU session indicated by the identifier information of the PDU session maintained by the AMF. The access technology type of the PDU session indicated by the identification information of the PDU session included in the control signaling. And after determining that the access technology type is a non-3GPP access technology type, that is, the PDU session indicated by the identifier information of the PDU session included in the first control signaling is performed after the PDU session established by the non-3GPP access network, As shown in S103 below.

S103: If the terminal is in an idle state in the non-3GPP access network, the AMF network element determines to send the first message to the terminal through or not through the 3GPP access network. The first message is that the AMF network element is triggered based on the first control signaling.

The first message is triggered by the AMF network element based on the first control signaling. It can be understood that the first message is a message sent by the access and mobility management network element to the terminal triggered by the first control signaling.

In an example, assuming that the process related to the first control signaling is a PDU session release process, when the SMF network element has a request for releasing the PDU session, the SMF network element sends a Namf_Communication_N1N2 MessageTransfer message to the AMF network element (ie, the first control) The signaling is used by the AMF network element to send a first message to the terminal, where the first message may include a PDU session release command and/or indication information for indicating that the terminal initiates PDU session establishment (including new construction and reconstruction).

In another example, assuming that the process related to the first control signaling is a PDU session modification process, when the SMF network element has a request for requesting PDU session modification, the SMF network element sends a Namf_Communication_N1N2 MessageTransfer message to the AMF network element (ie, the first The control signaling is used by the AMF network element to send a first message to the terminal, where the first message may include information such as a PDU session modification command.

In yet another example, it is assumed that the first control signaling related process is session and service continuity and user plane function management process, for example, session and service continuity mode 3 (SSC mode). 3) The change of SSC mode 3 PDU session anchor with multiple PDU sessions, then, when the SMF network element determines the UPF network element or the SMF network element needs to perform relocation, the SMF network The element sends a Namf_Communication_N1N2MessageTransfer message (ie, the first control signaling) to the AMF network element, where the message includes an N1 SM Container, where the N1 SM Container includes a PDU session modification command and a cause value, where the information contained in the N1 SM Container is The session management related information is used for terminal parsing, and the terminal performs a corresponding operation according to the information. In fact, the information is usually not parsed in the prior art AMF network element. The message is used by the AMF network element to send a first message to the terminal, where the first message may include information such as a PDU session modification command and a cause value.

In another example, it is assumed that the process related to the first control signaling is a downlink packet triggering process, for example, a service request process triggered by a downlink data packet, then, after receiving the downlink data packet, the UPF network element may The SMF network element sends a data notification message, and after receiving the data notification message, the SMF network element may send a Namf_Communication_N1N2MessageTransfer message to the AMF, where the message is used by the AMF network element to send a first message to the terminal, where the first message may include a PDU session. Identification and other information.

The embodiment of the present application determines how the AMF network element determines the connection management status of the terminal in the non-3GPP access network (specifically, the idle state or the connected state), and determines the connection management status of the terminal in the 3GPP access network. For definition, for example, reference may be made to the prior art. Moreover, the embodiment of the present application does not limit how the AMF network element determines whether to send the first message to the terminal through the 3GPP access network. For details, refer to the following.

Optionally, if the AMF network element determines that the first message is not sent to the terminal by using the 3GPP access network, the following S104 is performed.

Optionally, if the AMF network element determines to send the first message to the terminal through the 3GPP access network, if the terminal is in the idle state in the 3GPP access network, perform the following S106; if the terminal is in the 3GPP access network In the connected state, the following S108 is performed.

S104: The AMF network element sends a response message to the SMF network element. The response message includes eighth indication information and/or ninth indication information. The eighth indication information is used to indicate that the terminal is unreachable, and the ninth indication information is used to indicate that the terminal is in an idle state in the non-3GPP access network.

S105: The SMF network element receives the response message sent by the AMF network element.

After executing S105, it ends.

S106: The AMF network element sends a paging message to the terminal, where the paging message can be used by the terminal to initiate a service request process.

S107: The terminal performs a service request process to implement a signaling connection between the AMF network element and the terminal.

It can be understood that the AMF network element can participate in the execution of the service request process, and can refer to the prior art. After the signaling connection between the terminal and the AMF network element is established, the AMF network element may then perform the following S108.

S108: The AMF network element sends a notification message to the terminal through the 3GPP access network. The notification message is used by the terminal to initiate a related process of the corresponding PDU session (hereinafter referred to as a related process of the PDU session corresponding to the notification message), such as a PDU session release process and/or a PDU session establishment process.

The process of releasing the PDU session refers to the process of releasing the PDU session established by the non-3GPP access network, specifically the PDU session indicated by the identity information of the PDU session included in the first control signaling. The PDU session establishment process refers to a process of establishing (including newly creating and rebuilding) a PDU session based on a 3GPP access network. The PDU session release process and the PDU session establishment process are described in detail in the prior art, and are not described herein again.

It can be understood that the information included in the notification message may be determined by the AMF network element according to part or all of the information included in the first control signaling. For example, the notification message may include identification information of the PDU session included in the first control information, and the like.

S109: The terminal receives the notification message, and initiates a related process of the PDU session corresponding to the notification message.

After executing S109, it ends.

Optionally, after S102, juxtaposed with S103-S109, the method may further include: if the terminal is in a connected state in the non-3GPP access network, the AMF network element determines to pass the non-3GPP access network to the The terminal sends the first message, and the specific implementation process can refer to the prior art, and details are not described herein again.

It can be understood that, in a specific implementation, the process described above may correspond to a PDU session modification process requested by the network side, or a PDU session modification process requested by the network side, or a network side initiated service request process, and a session and service continuity, and In the corresponding steps of the user plane management process, etc. This application does not describe this in detail.

With reference to FIG. 4 and the description above, it can be seen that the embodiment of the present application provides that the AMF network element after receiving the signaling (ie, the foregoing first control signaling) that includes the identifier of the PDU session established based on the non-3GPP access network. When the terminal is in the idle state in the non-3GPP access network, the AMF network element may determine whether to send the first message to the terminal through the 3GPP access network. In this way, on the one hand, if it is determined that the message is sent to the terminal through the 3GPP access network, the terminal can obtain relevant information in time, thereby improving the user experience; on the other hand, if it is determined that the message is not sent to the terminal through the 3GPP access network, Then the paging signaling overhead can be saved.

In the embodiment of the present application, when the terminal is in the idle state in the non-3GPP access network, how the AMF network element determines whether to send the first message to the terminal through the 3GPP access network is not limited. For details, refer to any of the following modes 1 to 4.

Mode 1: The AMF network element may determine, according to an indication of the SMF network element (specifically, a display indication or an implicit indication), whether to send the first message to the terminal through or not through the 3GPP access network.

For example, the SMF network element may determine whether the AMF network element can send the first message to the terminal through the 3GPP access network based on whether the first control signaling is triggered by the control plane or triggered by the user plane. As another example, it may be determined based on which process the first control signaling related procedure is to determine whether the AMF network element can send the first message to the terminal through the 3GPP access network. For another example, it may be determined whether the AMF network element can send the first message to the terminal through the 3GPP access network based on a cause of triggering the process related to the first control signaling. Of course, this application is not limited to this.

The embodiment of the present application does not limit how the SMF network element indicates the AMF network element. Specifically, it may include any one of the following modes 1A to 1C.

Mode 1A: The first control signaling is used to indicate that the AMF network element sends the first message to the terminal through or not through the 3GPP access network. Based on the mode 1A, as shown in FIG. 5A, the above S103 may include the following S103A:

S103A: If the terminal is in an idle state in the non-3GPP access network, the AMF network element determines, according to the first control signaling, that the first message is sent to the terminal through or not through the 3GPP access network. Specifically, the AMF network element may identify, according to the first control signaling, whether the first message is sent to the terminal by the SMF network element, or not, by using the 3GPP access network, so that the identification result may be used as a reference to determine whether to pass or not. The first message is sent to the terminal through the 3GPP access network.

Optionally, based on the method 1A, before the step S101, the method may further include: the SMF network element acquiring, from the AMF network element, a connection management state (including an idle state or a connected state) of the terminal in the 3GPP access network, if the connection is The management state is an idle state, and the first control signaling is used to instruct the AMF network element to send the first message to the terminal through the 3GPP access network.

Optionally, the first control signaling is used to indicate that the AMF network element sends the first message to the terminal by using or not through the 3GPP access network, including one of the following situations:

Case 1A-1: The first control signaling further includes first indication information, where the first indication information is used to indicate that the AMF network element sends the first message to the terminal through or not through the 3GPP access network.

Specifically, the first control signaling may indicate that the AMF network element sends the first message to the terminal through the 3GPP access network by using the first indication information that has different content. For example, the AMF network element can be instructed to send the first message to the terminal through the 3GPP access network by carrying the binary number “1”, and the AMF network element is sent to the terminal through the 3GPP access network by carrying the binary number “0”. A message. Of course, this application is not limited to this.

Optionally, the foregoing S103A may include: if the terminal is in an idle state in the non-3GPP access network, the first indication information included in the first control signaling is used to indicate the AMF network element. When the first message is sent to the terminal by the 3GPP access network, the AMF network element determines to send the first message to the terminal through the 3GPP access network; and the first indication information included in the first control signaling is used to indicate that the AMF network element is not When the first message is sent to the terminal through the 3GPP access network, the AMF network element determines not to send the first message to the terminal through the 3GPP access network. Of course, this application is not limited to this.

Case 1A-2: The first control signaling further includes or does not include second indication information, where the second indication information is used to indicate that the AMF network element sends the first message to the terminal through the 3GPP access network, where if the first control signaling The second control information is not included, and the first control signaling is used to indicate that the AMF network element does not send the first message to the terminal through the 3GPP access network.

Optionally, the foregoing S103A may include: if the terminal is in an idle state in the non-3GPP access network, when the first control signaling includes the second indication information, the AMF network element determines to pass The 3GPP access network sends a first message to the terminal. When the second control information is not included in the first control signaling, the AMF network element determines not to send the first message to the terminal through the 3GPP access network. Of course, this application is not limited to this.

For example, the second indication information may include any one or more of the following information: N2 SM information, N1 message container, N2 information container, paging priority Wait.

Case 1A-3: The first control signaling further includes or does not include third indication information, where the third indication information is used to indicate that the AMF network element does not send the first message to the terminal through the 3GPP access network, where, if the first control information If the third indication information is not included, the first control signaling is used to instruct the AMF network element to send the first message to the terminal through the 3GPP access network.

Optionally, the foregoing S103A may include: if the terminal is in an idle state in the non-3GPP access network, when the third control information is included in the first control signaling, the AMF network element determines not to be determined. The first message is sent to the terminal by using the 3GPP access network. When the third indication information is not included in the first control signaling, the AMF network element determines to send the first message to the terminal through the 3GPP access network. Of course, this application is not limited to this.

For example, the third indication information may be a skip indication. In this case, optionally, the foregoing method may further include: if the SMF network element determines that the AMF network element does not send the first message to the terminal through the 3GPP access network, the first control signaling includes a skip indication; if the AMF is determined The network element sends the first message to the terminal through the 3GPP access network, and the skip indication is not included in the first control signaling.

It should be noted that, at present, the skip indication is an indication information used when releasing a PDU session established based on the 3GPP access network. Specifically, for the PDU session established based on the 3GPP access network, when performing the PDU session release process, if the SMF network element determines to release the PDU session (for example, the operation of the PDU session of the SSC mode 2), notify the terminal to establish a PDU session. The first control signaling generated by the SMF network element does not include a skip indication. If the SMF network element indicates that it is not necessary to notify the terminal to establish a PDU session after releasing the PDU session (eg, operation of a PDU session other than SSC mode 2), the first control signaling generated by the SMF network element includes a skip indication.

However, for the PDU session established based on the non-3GPP access network, when the PDU session release process is performed, if the network side device determines to notify the terminal to establish a PDU session after releasing the PDU session, since the terminal is in non When the 3GPP access network is in an idle state, the terminal cannot establish a PDU session in the non-3GPP access network. Therefore, the condition that the first control signaling in the present application includes a skip indication may be The conditions of the first control signaling including the skip indication in the process of the PDU session established by the 3GPP access network are different. For example, in the present application, if the SMF network element determines to release the PDU session established based on the non-3GPP access network, and informs the terminal to establish a PDU session for the DN of the PDU session, the SMF network element may generate a "skip indication" That is, when the terminal is in the idle state of non-3GPP, the terminal is not notified. For example, the SMF network element may also generate a skip indication according to the specific reason for releasing the PDU session. For example, if the PDU session is released due to the load status, the first control signaling generated by the SMF network element includes a skip indication; otherwise, the first control signaling generated by the SMF network element does not include a skip indication. For example, if the application function (AF) network element requests to change the UPF network element to release the PDU session, the first control signaling generated by the SMF network element includes a skip indication, otherwise, the SMF network element generates the first A control signaling does not include a skip indication. Of course, this application is not limited to this.

The foregoing is an example in which the SMF network element generation skip indication is applied to the PDU session release process. In the present application, the skip indication may also be applied to the PDU session modification process, or the session and service continuity and the user plane function. The management process (such as the process of changing the PDU session anchor point in a multi-PDU session scenario) and the like. The SMF network element generates a "skip indication" to facilitate the AMF network element to determine not to send the first message to the terminal through the 3GPP access network.

It can be understood that, based on the mode 1A, the SMF network element and the AMF network element can pre-appoint what kind of indication information the first control signaling passes (specifically, the first indication information, the second indication information, or the third indication information). To indicate (specifically, display indication or implicit indication) that the AMF network element sends the first message to the terminal through the 3GPP access network, or in other words, the SMF network element and the AMF network element are pre-determined by which situation. The AMF network element is instructed to send the first message to the terminal through or not through the 3GPP access network.

It can be understood that in the optional implementation manners of the three scenarios of the present mode 1A, the AMF network element determines to pass the first message if the first control signaling indicates that the AMF network element sends the first message to the terminal through the 3GPP access network. The 3GPP access network sends a first message to the terminal; if the first control signaling indicates that the AMF network element does not send the first message to the terminal through the 3GPP access network, the AMF network element determines not to send the first message to the terminal through the 3GPP access network. For example, the AMF network element may only use the indication of the SMF network element as a reference, and does not necessarily have to perform the indication of the SMF network element. For example, even if the SMF network element instructs the AMF network element to send the first message to the terminal through the 3GPP access network, the AMF network element may determine not to send the first message to the terminal through the 3GPP access network; or, even if the SMF network element indicates the AMF network The element does not send the first message to the terminal through the 3GPP access network, and the AMF network element may also determine to send the first message to the terminal through the 3GPP access network. Specifically, in addition to the indication of the SMF network element, the AMF network element may be combined with actual requirements, for example, the operator's policy information or the load status of the AMF network element, etc., to determine whether to pass or not through the 3GPP access network. The terminal sends the first message.

It can be understood that the three scenarios of the present mode 1A are all indications of the SMF network element, in particular, the SMF network element indicates, by using the first control signaling, that the AMF network element sends or not sends the first message to the terminal through the 3GPP access network. For example, the instruction may be performed by using a control signaling that is different from the first control signaling, and the control may be used to indicate that the AMF network element passes the 3GPP access network to or from the terminal. Sending the first message, or indicating whether the AMF network element sends the first message to the terminal through the 3GPP access network or not by sending the control signaling.

Mode 1B: The first control signaling is used to indicate that the first control signaling is triggered by the control plane or triggered by the user plane. In other words, in this manner, the AMF network element may determine whether to send the first to the terminal through or not through the 3GPP access network based on the granularity of the type of the reason for triggering the first control signaling (ie, control plane trigger or user plane trigger). Message.

In an example, the first control signaling is triggered by the control plane, and may include: the first control signaling is triggered by the second control signaling, for example, the first control signaling is N1N2 message transmission signaling. For example, if the process related to the first control signaling is a PDU session release process, the second control signaling may be a PDU Session Release Request. Alternatively, if the process related to the first control signaling is a PDU session modification process, the second control signaling may be a PDU Session Modification Request. In another example, the first control signaling is triggered by the control plane, and may include: the first control signaling is triggered by the SMF network element itself, for example, the first control signaling is N1N2 message transmission signaling. For example, if the process related to the first control signaling is a service continuity and a user plane function management process, for example, a process of modifying a PDU session anchor point in a scenario of a multiple PDU session, the first control signaling is determined by the SMF network element. Triggered when the network element or the SMF network element needs to perform relocation. For a specific implementation manner in which the SMF network element determines that the UPF network element or the SMF network element needs to perform relocation, reference may be made to the prior art, and details are not described herein again.

In one example, the first control signaling is triggered by the user plane, and may include: the first control signaling is triggered by the downlink data packet.

Based on the mode 1B, as shown in FIG. 5B, the foregoing S103 may include the following S103B:

S103B: If the terminal is in an idle state in the non-3GPP access network, the AMF network element determines, according to the first control signaling, that the first message is sent to the terminal through or not through the 3GPP access network. Specifically, the AMF network element may identify, according to the indication of the SMF network element, whether the first control signaling is triggered by the control plane or triggered by the user plane, so that the identification result may be used as a reference to determine whether to pass or not pass 3GPP. The access network sends a first message to the terminal.

Optionally, the first control signaling is used to indicate whether the first control signaling is triggered by the control plane or by the user plane, and includes one of the following situations:

Case 1B-1: The first control signaling further includes fourth indication information, where the fourth indication information is used to indicate that the first control signaling is triggered by the control plane or triggered by the user plane.

Specifically, the first control signaling may indicate whether the second control signaling is triggered or triggered by the user plane by carrying the fourth indication information with different content. For example, the first control signaling may be triggered by the control plane by carrying a binary number “1”, and the first control signaling is triggered by the user plane by carrying a binary number “0”. Of course, this application is not limited to this.

Optionally, the S103B may include: if the terminal is in an idle state in the non-3GPP access network, the fourth indication information included in the first control signaling is used to indicate the first control information. When the command is triggered by the control plane, the AMF network element may determine that the first message is not sent to the terminal through the 3GPP access network; and the fourth indication information included in the first control signaling is used to indicate that the first control signaling is When triggered by the user plane, the AMF network element can determine to send the first message to the terminal through the 3GPP access network. Of course, this application is not limited to this.

Case 1B-2: The first control signaling further includes or does not include fifth indication information, where the fifth indication information is used to indicate that the first control signaling is triggered by the control plane, where the first control signaling does not include the first The fifth indication information is used to indicate that the first control signaling is triggered by the user plane.

For example, the fifth indication information may be a paging priority indication. It can be understood that, in general, if the first control signaling is triggered by the user plane, the first control signaling includes a paging priority indication; if the first control signaling is triggered by the control plane, the first control The paging priority indication is not included in the signaling. Therefore, the AMF network element may determine whether the first control signaling is triggered by the user plane or the control plane by using the first control signaling with or without the paging priority indication. Triggered.

Optionally, the foregoing S103B may include: if the terminal is in an idle state in the non-3GPP access network, when the first control signaling includes the fifth indication information, the AMF network element determines A control signaling is triggered by the control plane. In this case, the AMF network element may determine that the first message is not sent to the terminal through the 3GPP access network; when the fifth indication information is not included in the first control signaling, the AMF The network element determines that the first control signaling is triggered by the user plane. In this case, the AMF network element may determine to send the first message to the terminal through the 3GPP access network. Of course, this application is not limited to this. It can be seen that the embodiment of the present application is compatible with the existing solution that the first control signaling is triggered by the downlink data packet, and when the terminal is in the idle state when the non-3GPP access network is in the idle state, the terminal is paged to the terminal through the 3GPP access network. .

Case 1B-3: The first control signaling further includes or does not include sixth indication information, where the sixth indication information is used to indicate that the first control signaling is triggered by a user plane, where the first control signaling does not include the first Six indication information, the first control signaling is used to indicate that the first control signaling is triggered by the control plane.

Optionally, the foregoing S103B may include: if the terminal is in an idle state in the non-3GPP access network, when the first control signaling includes the sixth indication information, the AMF network element determines A control signaling is triggered by the user plane. In this case, the AMF network element can determine that the first message is sent to the terminal through the 3GPP access network. When the sixth indication information is not included in the first control signaling, the AMF network The element determines that the first control signaling is triggered by the control plane. In this case, the AMF network element may determine not to send the first message to the terminal through the 3GPP access network. Of course, this application is not limited to this. It can be seen that the embodiment of the present application is compatible with the existing solution that the first control signaling is triggered by the downlink data packet, and when the terminal is in the idle state when the non-3GPP access network is in an idle state, the terminal sends a page to the terminal through the 3GPP access network. Message.

It can be understood that, based on the present mode 1B, the SMF network element and the AMF network element can pre-appoint what kind of indication information the first control signaling passes (specifically, the fourth indication information, the fifth indication information, or the sixth indication information) To indicate (specifically, display indication or implicit indication) that the first control signaling is triggered by the control plane or triggered by the user plane. In other words, the SMF network element and the AMF network element are pre-determined by which situation to indicate whether the first control signaling is triggered by the control plane or triggered by the user plane.

It can be understood that, in the optional implementation manners of the three scenarios of the present mode 1B, if the first control signaling indicates that the first control signaling is triggered by the control plane, the AMF network element determines not to pass the 3GPP connection. The first message is sent to the terminal by the network access; the first control signaling indicates that the first control signaling is triggered by the user plane, and the AMF network element determines that the first message is sent to the terminal through the 3GPP access network. In addition, if the first control signaling indicates that the first control signaling is triggered by the control plane, the AMF network element determines to send the first message to the terminal through the 3GPP access network; the first control signaling indicates the first The control signaling is triggered by the user plane, and the AMF network element determines not to send the first message to the terminal through the 3GPP access network. Specifically, the first message may be sent to the terminal by using or not through the 3GPP access network, in combination with actual requirements, such as an deployment policy of the operator, or a load status of the AMF network element.

It can be understood that the foregoing situations of the mode 1B are all indicated by the “SMF network element. Specifically, the SMF network element indicates, by using the first control signaling, that the first control signaling is triggered by the control plane, or is triggered by the user plane. For example, the instruction may be performed by using a control signaling that is different from the first control signaling, and the control signaling may be used to indicate that the first control signaling is triggered by the control plane, or It is triggered by the user plane, or indicates whether the first control signaling is triggered by the control plane or triggered by the user plane by sending the control signaling.

It should be noted that, any one of the foregoing first indication information to the sixth indication information may be an indication information newly designed to implement the corresponding technical solution provided by the embodiment of the present application, or may be An indication obtained by referring to or multiplexing the indication information in the prior art. For example, the third indication information may refer to a new skip indication designed by referring to the “skip indication” in the existing mechanism. For another example, the fifth indication information may multiplex the paging priority indication, that is, the information indicated by the fifth indication information is implicitly indicated by the paging priority indication.

Mode 1C: The first control signaling is used to indicate a process related to the first control signaling. In other words, in this manner, the AMF network element may determine whether to send the first message to the terminal through or not through the 3GPP access network based on the granularity of the process related to the first control signaling. For example, the first control signaling related process may include any of the following processes: a PDU session release process, a PDU session modification process, a session and service continuity, and a user plane function management process. Specifically, the first control signaling further includes seventh indication information, where the seventh indication information is used to indicate a process related to the first control signaling.

In this case, as shown in FIG. 5C, the above S103 may include the following S103C:

S103C: If the terminal is in an idle state in the non-3GPP access network, the AMF network element determines whether to pass or not through the 3GPP according to the first control signaling, specifically the seventh indication information in the first control signaling. The network access sends the first message to the terminal. Specifically, the AMF network element may identify the process related to the first control signaling according to the indication of the SMF network element, so that the identification result may be used as a reference to determine whether the first message is sent to the terminal through the 3GPP access network.

In principle, regardless of the process of the first control signaling related process, the AMF network element can determine whether to send the first message to the terminal through the 3GPP access network, for example, but not limited to, according to the deployment of the operator. Information such as strategy is determined.

Mode 2: The first control signaling further includes information in the N1 session management container. In this case, as shown in FIG. 5D, the above S103 may include the following S103D:

S103D: If the terminal is in an idle state in the non-3GPP access network, the AMF network element determines whether to send the first message to the terminal through the 3GPP access network according to the information in the N1 session management container. In other words, the AMF network element can refer to the information in the N1 session management container included in the first control signaling to determine whether to send the first message to the terminal through or not through the 3GPP access network. In this case, the AMF network element needs to parse the information included in the N1 session management container.

It can be seen that, in the mode 2, the AMF network element can identify the process related to the first control signaling by parsing the information included in the N1 session management container, so that the identification result can be used as a reference to determine whether to pass the 3GPP access network. Send the first message to the terminal.

The N1 session management container is generated by the SMF network element and sent to the terminal. Currently, the AMF network element is generally transparently transmitted from the S1 network element to the N1 session management container, in other words, the AMF network element is not. The information included in the N1 session management container is parsed; instead, the terminal parses the information included in the N1 session management container. The technical solution proposed by the embodiment of the present application supports the AMF network element to parse the information included in the N1 session management container. The method for parsing the information included in the N1 session management container by the AMF network element may refer to the method for parsing the information included in the N1 session management container by the terminal provided in the prior art, and details are not described herein again.

It can be understood that, by parsing the information included in the N1 session management container, the AMF network element can know which process the first control signaling related process is, such as a PDU session release process, a PDU session modification process, or session and service continuity. And the user plane function management process, etc., so that the first message may be sent to the terminal through the 3GPP access network according to the process related to the first control signaling. For details, refer to the above, and no further details are provided herein.

Mode 3: The first control signaling further includes an N1 session management container or does not include an N1 session management container. In this case, as shown in FIG. 5E, the above S103 may include the following S103E:

S103E: If the terminal is in an idle state in the non-3GPP access network, the AMF network element further includes or does not include the N1 session management container according to the first control signaling, and determines to send the first to the terminal through the 3GPP access network. Message. In other words, the AMF network element may refer to whether the N1 session management container is included in the first control signaling to determine whether to send the first message to the terminal through or not through the 3GPP access network. In this case, the AMF network element may not parse the information included in the N1 session management container.

It can be understood that if the first control signaling is triggered by the control plane, the first control signaling includes an N1 session management container. For a description of the N1 session management container, reference may be made to the above or prior art. If the first control signaling is triggered by the user plane, the N1 session management container is not included in the first control signaling. Therefore, the AMF network element can identify whether the first control signaling is triggered by the control plane or triggered by the user plane according to whether the first control signaling includes the N1 session management container, so that the first control signaling can be The control plane is triggered by the user plane to determine whether to send the first message to the terminal through the 3GPP access network. For details, refer to the above, and no further details are provided herein.

Mode 4: The first control signaling may further include other information; or the first control signaling further includes or does not include other information. The other information refers to, in addition to the N1 session management container, the first indication information to the seventh indication information, can be used for indicating (including display indication and implicit indication) that the first control signaling is by the user plane. Triggered, or information triggered by the control surface. For example, the other information may be user plane information included in the N2 information in the first control signaling. The AMF network element may determine whether the first control signaling is triggered by the user plane or triggered by the control plane according to the user plane information included in the first control signaling, or according to whether the user plane information is included in the first control signaling. For the specific implementation process, reference may be made to the prior art, and details are not described herein again. Subsequently, the AMF network element may determine whether the first control signaling is triggered by the control plane or triggered by the user plane, and determines whether the first message is sent to the terminal through the 3GPP access network. For details, refer to the above. No longer.

In the above, in the case that the AMF network element receives the first control signaling sent by the SMF network element, if the terminal is in the idle state in the non-3GPP access network, it is determined to pass or not through the 3GPP access network. The terminal sends the first message for explanation. In addition, the embodiment of the present application further provides the following technical solutions.

FIG. 6 is a schematic flowchart diagram of another signaling processing method provided by an embodiment of the present application. The method shown in Figure 6 can include the following steps:

S201: The AMF network element determines third control signaling, where the third control signaling includes identifier information of the terminal and information related to the non-3GPP access network, such as non-3GPP related slice information.

Optionally, the third control signaling may include a UE configuration update message, or a signaling related to a PDU session release process triggered by the AMF network element, such as downlink NAS transmission signaling. The manner in which the AMF network element determines the third control signaling is not limited in the embodiment of the present application. For example, reference may be made to the prior art.

S202: If the terminal is in an idle state in the non-3GPP access network, the AMF network element determines whether to pass the 3GPP access network or not through the information related to the non-3GPP access network included in the third control signaling. The terminal sends a second message, where the second message is triggered by the AMF network element based on the third control signaling.

The AMF network element may determine whether to send a notification message to the terminal according to the content in the message sent to the terminal, for example, if the non-3GPP access network related information included in the third control signaling is non-3GPP related slice information. Then, the AMF network element determines to send a second message to the terminal through the 3GPP access network. For example, the AMF network element may determine whether to send the second message to the terminal through the 3GPP access network, or not through the 3GPP access network, in combination with actual requirements, for example, the operator's policy information or the load status of the AMF network element. The second message may be the same as or different from the first message. For the description of the first message, in the case of no conflict, reference may be made to the above, and details are not described herein again.

With reference to FIG. 6 and the foregoing description, it is to be noted that the embodiment of the present application provides a specific implementation scheme when the AMF network element needs to send control signaling (that is, the foregoing third control signaling) to the terminal, specifically, the AMF network element. It may be determined that the first message is sent to the terminal with or without the 3GPP access network. In this way, on the one hand, if it is determined that the message is sent to the terminal through the 3GPP access network, the terminal can obtain relevant information in time, thereby improving the user experience; on the other hand, if it is determined that the message is not sent to the terminal through the 3GPP access network, Then the paging signaling overhead can be saved.

FIG. 11 is a schematic diagram of interaction of a message processing method according to an embodiment of the present application. The method shown in Figure 11 can include the following steps:

S301: The AMF network element sends a second message to the terminal by using the 3GPP access network. The second message contains control information for the first PDU session. The control information is triggered by the control plane, and the first PDU session is based on a PDU session established by the non-3GPP access network. The first PDU session may be any PDU session established by the terminal based on the non-3GPP access network, for example, may be the PDU session 2 in FIG.

Optionally, the control information may include any one of the following: a modification command for the first PDU session, a release command for the first PDU session, an authorization/authentication command for the first PDU session, and the like. The modification command for the first PDU session is used to indicate that the first PDU session is modified. A release command for the first PDU session is used to indicate release of the first PDU session. An authorization/authentication command for the first PDU session is used to indicate authorization/authentication of the first PDU session.

The embodiment of the present application does not limit the specific implementation manner that the second message includes the control information for the first PDU session. For example, the second message may include control information and identifier information of the first PDU session; for example, the second message. The control information may be included, and the control information carries the identification information of the first PDU session and the like.

Optionally, the second message may be a NAS message, in which case the control information for the first PDU session may be included in the N1 session management container of the NAS message. If the AMF network element determines that the NAS message carries the N1 session management container, it indicates that the control information for the first PDU session included in the second message is triggered by the control plane.

The control information for the first PDU session is triggered by the control plane, and may include: the control information for the first PDU session is triggered by another control signaling. For example, if the control information for the first PDU session is a modification command for the first PDU session, the other control signaling may be a PDU session modification request. For example, if the control information for the first PDU session is a release command for the first PDU session, the other control signaling may be a PDU session release request. For example, if the control information for the first PDU session is an authorization/authentication command for the first PDU session, the other control signaling may be a PDU session authorization/authentication request.

S302: The terminal receives the second message sent by the AMF network element from the 3GPP access network.

S303: The terminal sends a third message to the AMF network element according to the second message, where the third message is used to indicate a related process of rejecting the PDU session.

Optionally, if the control information for the first PDU session includes a modification command for the first PDU session, the third message is specifically used to indicate that the modification process for the first PDU session is denied, that is, the first PDU is refused to be modified. Conversation. As an example, the PDU session modification process may include: the network side network element (such as the SMF network element) determines to initiate the PDU session modification process, for example, due to the quality of service (QOS) information update of the PDU session, for example, The SMF network element sends a message to the AMF network element to notify the information about the update of the QOS information to the access network device and/or the terminal; to the session management policy associated with the modification process initiated by the SMF network element to the PCF network element. The process can be completed by using information exchange between network elements such as SMF network elements, PCF network elements, AMF network elements, access network devices, and terminals. For details, refer to the prior art. Rejecting the modification process for the first PDU session, it can be understood that after the terminal receives the control information for the first PDU session, the subsequent steps of the modification process for the first PDU session are not continued. It should be noted that, according to different triggering reasons of the PDU session modification process, the specific implementation steps of the PDU session modification process are different, and the specific implementation steps are not limited in the embodiment of the present application.

Optionally, if the control information for the first PDU session includes a release command for the first PDU session, the third message is specifically used to indicate that after the first PDU session is released, the establishment process of the second PDU session is refused, that is, Said to refuse to establish a second PDU session through the 3GPP access network. The first PDU session has the same DNN attribute as the second PDU session. As an example, the PDU session establishment process may include: the terminal starts to send a PDU session establishment request to the AMF network element, until the data transmission channel establishment of the PDU session is completed. The process can be completed by using information exchange between network elements such as SMF network elements, AMF network elements, access network devices, and terminals. For details, refer to the prior art. The specific implementation steps of the PDU session establishment process may be different when the capability of the terminal and the network side network element and the policy information are different. The process of refusing to initiate the establishment of the second PDU session can be understood as refusing to send a setup request for the second PDU session to the AMF network element, and naturally, the subsequent steps for the setup process of the second PDU session are not continued.

The embodiment of the present application does not limit what kind of information is included in the third message to indicate the related process of rejecting the PDU session. Optionally, the third message may further include a cause value, where the cause value is used to indicate a reason for the related process of rejecting the PDU session. For example, the cause value may be information indicating that the access technology type of the first PDU session is a non-3GPP access technology.

In this embodiment, in a scenario in which the AMF network element sends a message including control information for a PDU session established based on the non-3GPP access network to the terminal through the 3GPP access network, the processing scheme of the terminal, specifically, the PDU session is rejected. Related process. This is because when the terminal receives control information for another access technology type (specifically, the non-3GPP access technology) through an access technology type (specifically, 3GPP access technology), the control information cannot be made. Normally used for PDU sessions established by the other access technology type (specifically, non-3GPP access technology).

FIG. 12 is a schematic diagram of interaction of a message processing method according to an embodiment of the present application. The method may be an example of the message processing method shown in FIG. The method shown in Figure 12 can include the following steps:

S401: The SMF network element sends the first control signaling to the AMF network element. The first control signaling includes identification information of the first PDU session of the terminal and control information for the first PDU session. For example, the first PDU session may be the first PDU session in the embodiment shown in FIG.

For example, the first control signaling may be a Namf_Communication_N1N2MessageTransfer message. The message may carry the identification information of the N1 session management container and the first PDU session. The N1 session management container carries control information for the first PDU session, for example, a PDU session release command, a PDU session modification command, or an authorization/authentication command.

S402: After the AMF network element receives the first control signaling, if the terminal is in an idle state in the non-3GPP access network, the AMF network element sends the first message to the terminal through the 3GPP access network.

The first message is that the AMF network element is triggered based on the first control signaling. For example, if the terminal is in an idle state in the 3GPP access network, the first message may include a paging message. For another example, if the terminal is in the connected state in the 3GPP access network, the first message may include a notification message. For other related descriptions of the first message, reference may be made to the above, and details are not described herein again.

S403: After receiving the first message, the terminal sends a service request message to the AMF network element. The service request message is used to request activation of a user plane resource of the PDU session or to establish a signaling connection. The service request message may include identification information of one or more PDU sessions, and the PDU session indicated by the identification information of the one or more PDU sessions is established by the terminal based on the non-3GPP access network, and is allowed or desired 3GPP access network activated PDU session. The identification information of the one or more PDU sessions may be carried in a service request message in the form of a list.

S404: After receiving the service request message from the terminal, the AMF network element determines whether the identifier information of the first PDU session is the identifier information of one of the PDU sessions carried in the service request message.

If no, indicating that the terminal does not allow or does not want to activate the first PDU session in the 3GPP access network, then S405 is performed.

If yes, it is stated that the terminal allows or wants to activate the first PDU session in the 3GPP access network, and then S406 is performed.

S405: The AMF network element sends a service accept message to the terminal, where the service accept message includes indication information indicating that the first PDU session is not activated in the 3GPP access network. After executing S405, S409 is performed.

S406: The AMF network element initiates a process of activating a first PDU session in the 3GPP access network.

The process of activating the first PDU session refers to the process of establishing a user plane resource of the first PDU session in the 3GPP access network, which may be implemented by information interaction between the network elements such as the AMF network element and the SMF network element. For the specific implementation process, reference may be made to the prior art, and details are not described herein again.

It should be noted that after the 3GPP access network activates the first PDU session established based on the non-3GPP access network, the identity information of the first PDU session is unchanged, and the access technology type of the first PDU session is by non-3GPP. The access technology has been modified into a 3GPP access technology.

S407: After the process of activating the first PDU session ends, the AMF network element sends a service accept message to the terminal, where the service accept message includes indication information indicating that the first PDU session is activated in the 3GPP access network.

In the embodiment of the present application, the indication information for indicating whether the first PDU session is activated in the 3GPP access network is carried in the service accepting request by the AMF network element, and the application is not limited thereto.

The specific implementation form of the instruction information for indicating that the first PDU session is activated in the 3GPP access network is not limited, for example, it may be a direct indication (or a display indication) that the first PDU session is in the 3GPP access. The network activated information may also be an indirect indication (or implicit indication) that the first PDU session is activated in the 3GPP access network.

S408: The terminal modifies the access technology type of the first PDU session by the non-3GPP access technology to the 3GPP access technology according to the service accept message.

S409: The AMF network element sends the NAS message to the terminal through the 3GPP access network. For example, after receiving the first control signaling, the AMF network element sends a NAS message to the terminal through the 3GPP access network. The NAS message includes control information for the first PDU session, such as control information for the first PDU session, carried in the N1 session management container of the NAS message.

The NAS message can be understood as a specific implementation of the second message in the embodiment shown in FIG.

The order of execution of S402 to S408 and S409 is not limited in the embodiment of the present application. For example, S402 to S408 may be executed first, and then S409 may be executed. S409 may be performed first and then S402 to 408 may be executed, or S409 may be executed during execution of S402 to S408. In Fig. 12, S402 to S408 are executed first, and S409 is executed as an example. It can be understood that if S405 is executed first and then S405 is executed (as in the scenario where S409 is executed first and then S402 to S408 are executed), after S405 is executed, S410 can be directly executed.

S410: After receiving the NAS message and the service accept message, the terminal sends a third message to the AMF network element. The third message is used to indicate a related process of rejecting the PDU session. The third message may include identification information of the first PDU session.

Optionally, if the control information for the first PDU session included in the NAS message is a modification command for the first PDU session, and the service accept message includes indicating to activate the first PDU session in the 3GPP access network, the terminal rejects The modification process for the first PDU session. This is because the modification command for the first PDU session is a command for modifying the first PDU session whose access technology type is a non-3GPP access technology type, and after the 3GPP access network activates the first PDU session, The access technology type of the first PDU session is a 3GPP access technology type. In this case, the information for triggering the modification command for the first PDU session, such as information such as QOS, is not applicable to the first PDU session in which the access technology type is the current access technology (ie, 3GPP access technology). The modification process for the first PDU session may not be performed.

Optionally, if the control information for the first PDU session included in the NAS message is a release process for the PDU session, and according to the information in the service accept message, determining that the first PDU session is not activated on the 3GPP access network side, The terminal releases the first PDU session and refuses to initiate the establishment process of the second PDU session. This is because the first PDU session is not activated in the 3GPP access network, then the terminal can determine that the second PDU session cannot be established in the 3GPP access network, and the current terminal is in the idle state in the non-3GPP access network, therefore The terminal cannot establish a second PDU session in both the non-3GPP access network and the 3GPP access network. Therefore, in this case, the terminal will not establish a second PDU session. The second PDU session refers to a PDU session having the same DNN attribute as the first PDU session.

It can be understood that, at present, the terminal locally records the current access technology type of each PDU session established by the terminal, and the access technology type includes a non-3GPP access technology or a 3GPP access technology. If the access technology type of the PDU session is changed, the terminal modifies the current access technology type of the recorded PDU session, as in S408 above. In this case, when the terminal receives the control information, how to determine whether the control information is applied to the PDU session established in the non-3GPP access network, so as to determine whether to send the third message to the AMF network element, the embodiment of the present application provides The following alternative implementations are as follows:

Mode 1: After S408, the terminal also records information indicating the type of access technology change of the first PDU session. Based on mode 1, S410 may include: the terminal determining to send the third message to the AMF network element according to the NAS message and the service accept message, and the recorded information indicating the type of access technology change of the first PDU session.

For example, the terminal may indicate the access technology type change of the PDU session by recording the type of access technology before the change of the established PDU session. For another example, the access technology type of the PDU session may be changed by setting a flag bit. If the flag bit of the PDU session is "1", the access technology type of the PDU session is changed. Of course, this application is not limited to this.

Optionally, if the terminal receives the NAS message within a preset time period from S408 (that is, changing the access technology type of the first PDU session to the 3GPP access technology by the non-3GPP access technology), the terminal considers that The NAS message is applied to the access technology before the access technology type is changed. If the terminal receives the NAS message within a preset time period, the NAS message is considered to be applied to the access technology after the access technology type change. For example, it is possible to determine whether the NAS message received by the terminal is a NAS message received within a preset time period by setting a timer in the terminal.

Based on the optional embodiment, S410 may include: the terminal according to the NAS message (specifically, the information carried by the NAS message) and the service accept message, and determining the recorded access technology type change indicating the first PDU session. The information, and the time of the received NAS message, are determined to the AMF network element when the preset time period starts from "modify the access technology type of the first PDU session from the non-3GPP access technology to the 3GPP access technology" Send a third message.

Mode 2: The second message further includes access technology type indication information for indicating a PDU session to which the control information is applied.

As an example, if the second message is a NAS message, the NAS message may include an N1 session management container. The access technology type indication information for indicating the PDU session to which the control information is applied may be carried in the N1 session management container. It can be understood that, because the AMF network element does not normally parse the information in the N1 session management container, the information carried by the N1 session management container may be that the SMF network element carries the first control signaling when generating the first control signaling. The N1 session is managed in the container. That is to say, the information is sent by the SMF network element to the terminal through the AMF network element.

FIG. 13A is a schematic diagram of interaction of a message processing method according to an embodiment of the present application. The method shown in FIG. 13A may include the following steps:

S501A: The SMF network element determines control information for the PDU session of the terminal, and indication information indicating an access technology type of the PDU session to which the control information is applied. The specific implementation manner of the access technology type is not limited in this embodiment, and may be, for example, a 3GPP access technology, or may be a non-3GPP access technology. If the access technology type is a non-3GPP access technology, as an example, the PDU session for which the control information is directed may be the “first PDU session” described in the embodiment shown in FIG. 11 or FIG. 12, In the case, the indication information indicating the access technology type of the first PDU session may be used to indicate that the information (such as QOS information, etc.) included in the control information is applied to the PDU session of the non-3GPP access technology.

S502A: The SMF network element sends the control information and the indication information to the terminal by using the AMF network element.

For example, the control information and the indication information may be carried in the N1 session management container, and sent by the SMF network element to the terminal through the AMF network element. Specifically, the N1 session management container may be included in the first control signaling described in the foregoing embodiment shown in FIG. 12 and sent by the SMF network element to the AMF network element, where the N1 session management container may be included in the foregoing FIG. The second message described in the embodiment is sent by the AMF network element to the terminal. This is only an example, which does not limit the specific implementation of S502. For example, the control information and the indication information may be carried in different messages/signaling or may not be transmitted simultaneously.

For example, the AMF network element can send the control information and the indication information to the terminal through the 3GPP access network.

S503A: The terminal receives the control information and the indication information.

In the message processing method provided by the embodiment, the SMF network element sends control information for the PDU session of the terminal to the terminal through the AMF network element, and indication information indicating the type of access technology of the PDU session, that is, the terminal The type of access technology of the PDU session when the network side determines the control information can be known. In this way, it helps the terminal to determine whether to reject the related process of the PDU session when receiving the control information through the 3GPP access network. This is only one application scenario of the embodiment, and the application is of course not limited thereto.

In the embodiment shown in FIG. 13A, the two pieces of information that are "control information for the PDU session of the terminal" and "instruction information of the access technology type used to indicate the PDU session of the control information application" are independent. The example is explained. Alternatively, the indication information may be part of the control information. In this case, S501A to S503A can be replaced with the following steps S501B to S503B as shown in FIG. 13B.

S501B: The SMF network element determines control information for the PDU session of the terminal, where the control information includes indication information for indicating an access technology type of the PDU session to which the control information is applied.

S502B: The SMF network element sends the control information to the terminal by using the AMF network element.

S503B: The terminal receives the control information.

For the explanation and the beneficial effects of the related content in this embodiment, reference may be made to the embodiment shown in FIG. 13A, and details are not described herein again.

FIG. 14 is a schematic diagram of interaction of a message processing method according to an embodiment of the present application. The method shown in Figure 14 includes the following steps:

S601: The SMF network element sends control signaling to the AMF network element. The control signaling includes identification information of a PDU session of the terminal, the PDU session being a PDU session established based on a non-3GPP access network. For example, the control signaling can be a Namf_Communication_N1N2MessageTransfer message.

S602: The AMF network element receives the control signaling.

S603: If the control signaling is triggered by the control plane, the AMF network element refuses to activate the PDU session in the 3GPP access network. Regarding how the AMF network element determines that the control signaling is triggered by the control plane, reference may be made to the related description above, and details are not described herein again. It can be understood that the AMF network element can perform other signaling processes (S702-S703 and the like shown in FIG. 15 below) after executing S602, and then execute S603.

In the message processing method provided by this embodiment, the AMF network element rejects the control signaling that carries the identifier information of the PDU session established based on the 3GPP access network, and determines that the control signaling is triggered by the control plane. The PDU session is activated on the 3GPP access network. In this way, it helps to avoid incorrect handling of control signaling caused by the type of access technology of the PDU session.

FIG. 15 is a schematic diagram of interaction of a message processing method according to an embodiment of the present application. This method is an example of the message processing method shown in FIG. The method shown in Figure 15 can include the following steps:

S701 to S703: Reference may be made to the above S401 to S403. The "first control signaling" in the embodiment shown in FIG. 15 may be "control signaling" in the embodiment shown in FIG.

S704: After the AMF network element receives the service request message from the terminal, if the control information for the first PDU session needs to be sent to the terminal, the AMF network element refuses to initiate the process of activating the first PDU session in the 3GPP access network. For example, a service accept message is sent to the terminal, the service accept message including indication information indicating that the first PDU session is not activated on the 3GPP access network.

Subsequently, optional, you can also perform the following steps:

S705 to S706: Reference may be made to the above S409 to S410.

The embodiment of the present application further provides an information processing system, which may include an AMF network element and a terminal. The AMF network element may be used to perform some or all of the steps performed by the AMF network element in the embodiment shown in FIG. 11 or FIG. The terminal can be used to perform some or all of the steps performed by the terminal in the embodiment shown in FIG. 11 or FIG. Optionally, the information processing system may further include an SMF network element. For example, the SMF network element may be used to perform some or all of the steps performed by the SMF network element in the embodiment shown in FIG. For another example, the AMF network element, the terminal, and the SMF network element may be used to perform respective or all of the steps in the embodiment shown in FIG. 13A or FIG. 13B, respectively.

The embodiment of the present application further provides an information processing system, which may include an SMF network element and an AMF network element. For example, the SMF network element can be used to perform some or all of the steps performed by the SMF network element in the embodiment shown in FIG. 14 or FIG. The AMF network element can be used to perform some or all of the steps performed by the AMF network element in the embodiment shown in Figure 14 or Figure 15. Optionally, the information processing system may further include a terminal. For example, the terminal can be used to perform some or all of the steps performed by the terminal in the embodiment shown in FIG.

The solution provided by the embodiment of the present application is mainly introduced from the perspective of interaction between different network elements. It can be understood that an access and mobility management network element (such as an AMF network element), a session management network element (such as an SMF network element), and a terminal, in order to implement the foregoing functions, include hardware structures corresponding to performing various functions and/or Software module. The embodiments of the present application can be implemented in a combination of hardware or hardware and computer software in combination with the elements of the examples and algorithm steps described in the embodiments disclosed in the application. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art 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 technical solutions of the embodiments of the present application.

The embodiments of the present application may perform functional unit division on the access and mobility management network element, the session management network element, the terminal, and the like according to the foregoing method. For example, each functional unit may be divided according to each function, or two or two may be divided. More than one function is integrated in one processing unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit. It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logical function division. In actual implementation, there may be another division manner.

In the case of an integrated unit, FIG. 7 shows a possible exemplary block diagram of an apparatus involved in the embodiment of the present application, which may exist in the form of software, hardware or a combination of software and hardware. FIG. 7 shows a possible schematic block diagram of the apparatus involved in the embodiment of the present application. The apparatus 700 includes a processing unit 702 and a communication unit 703. The processing unit 702 is configured to control and manage the actions of the device. The communication unit 703 is used to support communication of the device with other devices. The apparatus 700 may further include a storage unit 701 for storing program codes and data of the apparatus.

The apparatus 700 shown in FIG. 7 may be the access and mobility management network element or the session management network element involved in the embodiment of the present application.

When the apparatus 700 shown in FIG. 7 is an access and mobility management network element, the processing unit 702 can support the apparatus 700 to perform the operations performed by the access and mobility management network elements (eg, AMF network elements) in the foregoing method examples. For example, processing unit 702 supports apparatus 700 to perform S103 in FIG. 4, S103A in FIG. 5A, S103B in FIG. 5B, S103C in FIG. 5C, S103D in FIG. 5D, S103E in FIG. 5E, and/or for Other processes of the techniques described herein. The communication unit 703 can support communication between the device 700 and the session management network element or the terminal, etc., for example, the communication unit 703 supports the device 700 to perform S102, S104, S106, S108 in any of the figures of FIG. 4 and FIG. 5A to FIG. 5E. , and / or other related communication processes. For example, communication unit 703 supports apparatus 700 to perform S602 of FIG. 14, and/or other related communication processes; processing unit 702 supports apparatus 700 to perform S603 of FIG. 14, and/or other related communication procedures. As another example, communication unit 703 supports apparatus 700 to perform S702-S706 in FIG. 15, and/or other related communication procedures.

When the device 700 shown in FIG. 7 is a session management network element, the communication unit 703 can support communication between the device 700 and the access and mobility management network element, etc., for example, the communication unit 703 supports the device 700 to perform FIG. 4 and FIG. S101, S105, and/or other related communication processes in any of Figures 5A through 5E. For example, the communication unit 703 supports the apparatus 700 to execute S601 in FIG. For example, processing unit 702 supports apparatus 700 to perform S501A in FIG. 13A, and/or other related communication processes; communication unit 703 supports apparatus 700 to perform S502A in FIG. 13A, and/or other related communication procedures. For example, processing unit 702 supports apparatus 700 to perform S501B in FIG. 13B, and/or other related communication processes; communication unit 703 supports apparatus 700 to perform S502B in FIG. 13B, and/or other related communication procedures.

For example, the processing unit 702 may be a processor or a controller, such as a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application specific integrated circuit (Application). -Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, units and circuits described in connection with the present disclosure. The processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like. The communication unit 703 can be a communication interface, which is a collective name. In a specific implementation, the communication interface can include one or more interfaces. The storage unit 701 can be a memory.

When the processing unit 702 is a processor, the communication unit 703 is a communication interface, and the storage unit 701 is a memory, the apparatus 700 involved in the embodiment of the present application may be the apparatus 800 shown in FIG.

Referring to FIG. 8, the apparatus 800 includes a processor 802 and a communication interface 803. Further, the apparatus 800 can also include a memory 801. Alternatively, device 800 may also include a bus 804. The communication interface 803, the processor 802, and the memory 801 may be connected to each other through a bus 804. The bus 804 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (abbreviated). EISA) bus and so on. The bus 804 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 8, but it does not mean that there is only one bus or one type of bus.

Among other things, the processor 802 can perform various functions of the device 800 by running or executing a program stored in the memory 801.

For example, the device 800 shown in FIG. 8 may be the access and mobility management network element or the session management network element involved in the embodiment of the present application.

When the device 800 is an access and mobility management network element, the processor 802 can perform the actions performed by the access and mobility management network elements in the various method examples described above by running or executing a program stored in the memory 801.

When the device 800 is a session management network element, the processor 802 can perform the actions performed by the session management network element in the various method examples described above by running or executing a program stored in the memory 801.

In the case of an integrated unit, FIG. 9 shows a possible exemplary block diagram of another apparatus involved in the embodiment of the present application, which may exist in the form of software, hardware or a combination of software and hardware. . FIG. 9 shows a possible schematic block diagram of the apparatus involved in the embodiment of the present application. The apparatus 900 includes a processing unit 902 and a communication unit 903. The processing unit 902 is configured to control and manage the actions of the device. The communication unit 903 is used to support communication of the device with other devices. The apparatus may also include a storage unit 901 for storing program codes and data of the apparatus.

The apparatus 900 shown in FIG. 9 may be a terminal or a chip applied to the terminal. The processing unit 902 can support the apparatus 900 to perform the actions performed by the terminal in the above various method examples. For example, the processing unit 902 supports the apparatus 900 to perform the initiation notification message in S107 and S109 in any of the drawings of FIG. 4 and FIGS. 5A to 5E. Corresponding processing of corresponding PDU sessions, and/or other processes for the techniques described herein. The communication unit 903 can support communication between the device 900 and the access and mobility management network element or the like. For example, the communication unit 903 supports the device 900 to perform the receiving step in S109 in any of FIGS. 4 and 5A to 5E. , and / or other related communication processes. For example, communication unit 903 can support device 900 to perform S302 and S303 in FIG. 11, and/or other related communication processes. For example, communication unit 903 can support device 900 to perform S402, S403, S405/S407, S409, S410, and/or other related communication processes in FIG. Processing unit 902 can support apparatus 900 to perform S408 in FIG. 12, and/or other related communication processes.

Illustratively, processing unit 902 can be a processor or controller, such as a CPU, general purpose processor, DSP, ASIC, FPGA or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, units and circuits described in connection with the present disclosure. The processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like. The communication unit 903 can be a communication interface, which is a collective name. In a specific implementation, the communication interface can include one or more interfaces. The storage unit 901 can be a memory.

When the processing unit 902 is a processor, the communication unit 903 is a transceiver, and the storage unit 901 is a memory, the apparatus 900 involved in the embodiment of the present application may be the terminal shown in FIG.

FIG. 10 is a simplified schematic diagram showing a possible design structure of a terminal involved in the embodiment of the present application. The terminal 1000 includes a transmitter 1001, a receiver 1002, and a processor 1003. The processor 1003 may also be a controller, and is represented as "controller/processor 1003" in FIG. Optionally, the terminal 1000 may further include a modem processor 1005. The modem processor 1005 may include an encoder 1006, a modulator 1007, a decoder 1008, and a demodulator 1009.

In one example, the transmitter 1001 conditions (eg, analog transforms, filters, amplifies, and upconverts, etc.) the output samples and generates an uplink signal that is transmitted via an antenna to the base station described in the above embodiments. . On the downlink, the antenna receives the downlink signal transmitted by the base station in the above embodiment. Receiver 1002 conditions (eg, filters, amplifies, downconverts, digitizes, etc.) the signals received from the antenna and provides input samples. In modem processor 1005, encoder 1006 receives traffic data and signaling messages to be transmitted on the uplink and processes (e.g., formats, codes, and interleaves) the traffic data and signaling messages. Modulator 1007 further processes (e.g., symbol maps and modulates) the encoded traffic data and signaling messages and provides output samples. Demodulator 1009 processes (e.g., demodulates) the input samples and provides symbol estimates. The decoder 1008 processes (e.g., deinterleaves and decodes) the symbol estimate and provides decoded data and signaling messages that are sent to the terminal 1000. Encoder 1006, modulator 1007, demodulator 1009, and decoder 1008 may be implemented by a composite modem processor 1005. These units are processed according to the radio access technologies employed by the radio access network (e.g., access technologies for LTE, 5G, and other evolved systems). It should be noted that when the terminal 1000 does not include the modem processor 1005, the above functions of the modem processor 1005 may also be completed by the processor 1003.

The processor 1003 controls and manages the operations of the terminal 1000 for performing the processing performed by the terminal 1000 in the embodiment of the present application. For example, the processor 1003 is further configured to perform the processes related to the terminal in the method shown in FIG. 4, FIG. 5A to FIG. 5E, and/or other processes of the technical solutions described in the present application.

Further, the terminal 1000 may further include a memory 1004 for storing program codes and data for the terminal 1000.

The steps of the method or algorithm described in connection with the disclosure of the embodiments of the present application may be implemented in a hardware manner, or may be implemented by a processor executing software instructions. The software instructions may be composed of corresponding software modules, which may be stored in a random access memory (RAM), a flash memory, a read only memory (ROM), an erasable programmable read only memory ( Erasable Programmable ROM (EPROM), electrically erasable programmable read only memory (EEPROM), registers, hard disk, removable hard disk, compact disk read only (CD-ROM) or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and the storage medium can be located in an ASIC. Additionally, the ASIC can be located in an access and mobility management network element, a session management network element, or a terminal. Of course, the processor and the storage medium may also exist as discrete components in the access and mobility management network element, the session management network element, or the terminal.

Those skilled in the art should appreciate that in one or more of the above examples, the functions described in the embodiments of the present application may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored in a computer readable medium or transmitted as one or more instructions or code on a computer readable medium. Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A storage medium may be any available media that can be accessed by a general purpose or special purpose computer.

The specific embodiments of the present invention have been described in detail with reference to the embodiments, technical solutions and advantages of the embodiments of the present application. It should be understood that the foregoing description is only The scope of the present invention is defined by the scope of the present invention, and any modifications, equivalents, improvements, etc., which are included in the embodiments of the present application, are included in the scope of protection of the embodiments of the present application.

Claims

A signaling processing method, the method comprising:

The access and mobility management network element receives control signaling from the session management network element; wherein the control signaling includes identification information of a protocol data unit PDU session of the terminal, the PDU session is based on a non-third generation partnership program a PDU session established by the 3GPP access network;

And if the terminal is in an idle state in the non-3GPP access network, the access and mobility management network element determines to send a first message to the terminal by or not through the 3GPP access network; The first message is that the access and mobility management network element is triggered based on the control signaling.
The signaling processing method according to claim 1, wherein the control signaling is used to indicate that the access and mobility management network element sends or not to the terminal through the 3GPP access network. The first message is sent; the access and mobility management network element determines whether to send the first message to the terminal by using or not through the 3GPP access network, including:

The access and mobility management network element determines, according to the control signaling, that the first message is sent to the terminal by or not through the 3GPP access network.
The signaling processing method according to claim 2, wherein the control signaling is used to indicate that the access and mobility management network element sends or not to the terminal through the 3GPP access network. The first message, including one of the following situations:

The control signaling further includes first indication information, where the first indication information is used to indicate that the access and mobility management network element sends the first to the terminal by using or not through the 3GPP access network. Message

The control signaling further includes or does not include second indication information, where the second indication information is used to indicate that the access and mobility management network element sends the first to the terminal by using the 3GPP access network. a message, where the control signaling is used to indicate that the access and mobility management network element does not pass the 3GPP access network to the terminal, if the control signaling does not include the second indication information. Sending the first message;

The control signaling further includes or does not include third indication information, where the third indication information is used to indicate that the access and mobility management network element does not send the first part to the terminal by using the 3GPP access network. a message, where the control signaling is used to indicate that the access and mobility management network element passes the 3GPP access network to the terminal, if the control signaling does not include the third indication information. Sending the first message.
The signaling processing method according to claim 1, wherein the control signaling is used to indicate that the control signaling is triggered by a control plane or triggered by a user plane; the access and the mobile The sex management network element determines whether to send the first message to the terminal by using or not through the 3GPP access network, including:

The access and mobility management network element determines, according to the control signaling, that the first message is sent to the terminal by or not through the 3GPP access network.
The signaling processing method according to claim 4, wherein the control signaling is used to indicate that the control signaling is triggered by a control plane or triggered by a user plane, and includes one of the following situations:

The control signaling further includes fourth indication information, where the fourth indication information is used to indicate that the control signaling is triggered by the control plane, or is triggered by the user plane;

The control signaling further includes or does not include fifth indication information, where the fifth indication information is used to indicate that the control signaling is triggered by the control plane, where the control signaling does not include the a fifth indication information, where the control signaling is used to indicate that the control signaling is triggered by the user plane;

The control signaling further includes or does not include sixth indication information, where the sixth indication information is used to indicate that the control signaling is triggered by the user plane, where the control signaling does not include the The sixth indication information is used by the control signaling to indicate that the control signaling is triggered by the control plane.
The signaling processing method according to claim 1, wherein the control signaling further includes seventh indication information, where the seventh indication information is used to indicate a process related to the control signaling; And the mobility management network element determines to send the first message to the terminal by using or not through the 3GPP access network, including:

The access and mobility management network element determines, according to the seventh indication information, that the first message is sent to the terminal by or not through the 3GPP access network.
The signaling processing method according to claim 6, wherein the process related to control signaling includes any one of the following processes: a PDU session release process, a PDU session modification process, and session and service continuity, and user plane function management. process.
The signaling processing method according to claim 1, wherein

The control signaling further includes an N1 session management container, the access and mobility management network element determining to send the first message to the terminal by or not through the 3GPP access network, including: the access and mobility management Determining, by the network element, that the first message is sent to the terminal by the 3GPP access network according to the information in the N1 session management container;

Or the control signaling further includes or does not include an N1 session management container, where the access and mobility management network element determines to send the first message to the terminal by using or not through the 3GPP access network, including: And the mobility management network element further includes or does not include an N1 session management container according to the control signaling, and determines to send the first message to the terminal by or not through the 3GPP access network.
The signaling processing method according to any one of claims 1 to 8, wherein the control signaling comprises N1N2 message transmission signaling.
The signaling processing method according to any one of claims 1 to 9, wherein if the access and mobility management network element determines not to send the first to the terminal through the 3GPP access network The message, the method further includes:

The access and mobility management network element sends a response message to the session management network element, where the response message includes at least one of eighth indication information and ninth indication information; The ninth indication information is used to indicate that the terminal is in an idle state in the non-3GPP access network.
The signaling processing method according to any one of claims 1 to 10, wherein if the access and mobility management network element determines to send the first message to the terminal through the 3GPP access network , the method further includes:

When the terminal is in an idle state in the 3GPP access network, the first message includes a paging message, and the access and mobility management network element sends the location to the terminal by using the 3GPP access network. a paging message, where the paging message is used by the terminal to initiate a service request process; or

When the terminal is in a connected state in the 3GPP access network, the first message includes a notification message, and the access and mobility management network element sends the to the terminal by using the 3GPP access network. And a notification message, where the notification message is used by the terminal to initiate at least one of a PDU session establishment process and a PDU session release process.
The signaling processing method according to any one of claims 1 to 11, wherein the first message includes identification information or tenth indication information of the PDU session; and the tenth indication information is used to indicate The related process of the terminal initiating a PDU session.
The signaling processing method according to any one of claims 1 to 6, 8 to 12, wherein the control signaling is control signaling in any of the following processes: a PDU session release process, a PDU session modification process And session and business continuity as well as user plane function management process.
The signaling processing method according to any one of claims 1 to 11, characterized in that

When the process related to the control signaling is a PDU session release process, the first message includes: a PDU session release command and/or indication information used to indicate that the terminal initiates a PDU session establishment;

Or, when the process related to the control signaling is a PDU session modification process, the first message includes: a PDU session modification command;

Or the first message includes: a PDU session modification command and a cause value, when the process related to the control signaling is a session and a service continuity and a user plane function management process;

Or, when the process related to the control signaling is a process triggered by a downlink data packet, the first message includes: the PDU session identifier.
The signaling processing method according to any one of claims 1 to 14, wherein the first message is specifically triggered by the access and mobility management network element after receiving the control signaling. A message sent to the terminal.
A signaling processing method, the method comprising:

The session management network element determines control signaling, where the control signaling includes identification information of a protocol data unit PDU session of the terminal; the PDU session is a PDU session established based on a non-3th generation partnership plan 3GPP access network;

Transmitting, by the session management network element, the control signaling to an access and mobility management network element, where the control signaling is used by the access and mobility management network element after receiving the control signaling If it is determined that the terminal is in an idle state in the non-3GPP access network, determining to send a first message to the terminal by using or not through the 3GPP access network, where the first message is the access And the mobility management network element is triggered based on the control signaling.
The signaling processing method according to claim 16, wherein the control signaling is used to indicate that the access and mobility management network element sends or not to the terminal through the 3GPP access network. Said the first message.
The signaling processing method according to claim 17, wherein the control signaling is used to indicate that the access and mobility management network element sends or not to the terminal through the 3GPP access network. The first message, including one of the following situations:

The control signaling further includes first indication information, where the first indication information is used to indicate that the access and mobility management network element sends the first to the terminal by using or not through the 3GPP access network. Message

The control signaling further includes or does not include second indication information, where the second indication information is used to indicate that the access and mobility management network element sends the first to the terminal by using the 3GPP access network. a message, where the control signaling is used to indicate that the access and mobility management network element does not pass the 3GPP access network to the terminal, if the control signaling does not include the second indication information. Sending the first message;

The control signaling further includes or does not include third indication information, where the third indication information is used to indicate that the access and mobility management network element does not send the first part to the terminal by using the 3GPP access network. a message, where the control signaling is used to indicate that the access and mobility management network element passes the 3GPP access network to the terminal, if the control signaling does not include the third indication information. Sending the first message.
The signaling processing method according to claim 16, wherein the control signaling is used to indicate that the control signaling is triggered by a control plane or triggered by a user plane.
The signaling processing method according to claim 19, wherein the control signaling is used to indicate that the control signaling is triggered by a control plane or triggered by a user plane, and includes one of the following situations:

The control signaling further includes fourth indication information, where the fourth indication information is used to indicate that the control signaling is triggered by the control plane, or is triggered by the user plane;

The control signaling further includes or does not include fifth indication information, where the fifth indication information is used to indicate that the control signaling is triggered by the control plane, where the control signaling does not include the a fifth indication information, where the control signaling is used to indicate that the control signaling is triggered by the user plane;

The control signaling further includes or does not include sixth indication information, where the sixth indication information is used to indicate that the control signaling is triggered by the user plane, where the control signaling does not include the The sixth indication information is used by the control signaling to indicate that the control signaling is triggered by the control plane.
The signaling processing method according to claim 16, wherein the control signaling further includes seventh indication information, where the seventh indication information is used to indicate a process related to the control signaling.
The signaling processing method according to claim 20, wherein the process related to control signaling includes any one of the following processes: a PDU session release process, a PDU session modification process, and session and service continuity, and user plane function management. process.
The signaling processing method according to claim 17 or 18, wherein the method further comprises:

Obtaining, by the session management network element, a connection management state of the terminal in the non-3GPP access network from the access and mobility management network element;

The session management network element determines control signaling, including:

Determining, by the session management network element, the control signaling according to the connection management state; wherein, if the connection management state is an idle state, the control signaling is used to indicate the access and mobility management network element Transmitting the first message to the terminal by using the 3GPP access network.
The signaling processing method according to any one of claims 16 to 23, wherein the control signaling comprises N1N2 message transmission signaling.
The signaling processing method according to any one of claims 16 to 21, 23 to 24, wherein the control signaling is control signaling in any of the following processes: a PDU session release process, a PDU session modification process And session and business continuity as well as user plane function management process.
A signaling processing method, the method comprising:

The terminal receives the first message from the access and mobility management network element, where the first message is triggered by the access and mobility management network element based on the received control signaling, and is the access and a message sent by the mobility management network element to the terminal through the 3GPP access network when determining that the terminal is in an idle state in a non-3rd Generation Partnership Project 3GPP access network; the control signaling includes the terminal Identification information of a protocol data unit PDU session, the PDU session being based on a PDU session established by the non-3GPP access network;

And the terminal initiates a related process of the PDU session by using the 3GPP access network according to the first message.
The signaling processing method according to claim 26, wherein the terminal initiates a PDU session related process by using the 3GPP access network according to the first message, including:

When the terminal is in an idle state in the 3GPP access network, the terminal initiates a service request process;

Or, when the terminal is in a connected state in the 3GPP access network, the terminal initiates at least one of a PDU session establishment process and a PDU session release process.
The signaling processing method according to claim 26 or 27, wherein the terminal initiates a process related to the PDU session by using the 3GPP access network according to the first message, including:

The terminal initiates a process related to the PDU session by using the 3GPP access network according to the first message and policy information.
A message processing method, characterized in that the method comprises:

The terminal receives a second message from the access and mobility management network element from the 3rd Generation Partnership Project 3GPP access network; wherein the second message includes control information for the first protocol data unit PDU session, the control The information is triggered by a control plane, and the first PDU session is a PDU session established based on a non-3GPP access network;

The terminal sends a third message to the access and mobility management network element according to the second message, where the third message is used to indicate a related process of rejecting the PDU session.
The message processing method according to claim 29, characterized in that

If the control information includes a modification command for the first PDU session, the third message is specifically used to indicate that the modification process for the first PDU session is denied;

Or, if the control information includes a release command for the first PDU session, the third message is specifically used to indicate that the establishment process of the second PDU session is refused after the first PDU session is released; The second PDU session has the same data network name attribute as the first PDU session.
The message processing method according to claim 29, wherein before the terminal sends the third message to the access and mobility management network element according to the second message, the method further includes:

Receiving, by the terminal, the indication information from the access and mobility management network element; the indication information is used to indicate that the first PDU session is activated in a 3GPP access network, or is used to indicate that the first PDU session is not in the 3GPP access network activation;

Sending, by the terminal, the third message to the access and mobility management network element according to the second message, including:

And sending, according to the second message and the indication information, a third message to the access and mobility management network element.
A message processing method according to claim 31, wherein

If the indication information is used to indicate that the first PDU session is activated in the 3GPP access network, and the control information includes a modification command for the first PDU session, the third message is specifically used to indicate that the a modification process of the first PDU session;

Or, if the indication information is used to indicate that the first PDU session is not activated in a 3GPP access network, and the control information includes a release command for the first PDU session, the third message is specifically used to: Instructing to initiate a setup procedure for initiating a second PDU session after releasing the first PDU session; the second PDU session having the same data network name attribute as the first PDU session.
The message processing method according to claim 31 or 32, wherein, in the case that the indication information is used to indicate that the first PDU session is activated in a 3GPP access network, the method further includes:

The terminal modifies the access technology type of the first PDU session to a 3GPP access technology by using a non-3GPP access technology according to the indication information, and records an access technology type change used to indicate the first PDU session. Information;

Sending, by the terminal, the third message to the access and mobility management network element according to the second message, including:

The terminal sends a third message to the access and mobility management network element according to the second message and the recorded information.
The message processing method according to claim 31 or 32, wherein, in the case that the indication information is used to indicate that the first PDU session is activated by a 3GPP access network, the method further includes:

The terminal, according to the indication information, modifying an access technology type of the first PDU session from a non-3GPP access technology to a 3GPP access technology;

Sending, by the terminal, the third message to the access and mobility management network element according to the second message, including:

In the case that the second message further includes indication information indicating an access technology type of the PDU session to which the control information is applied, the terminal performs the access and mobility management according to the second message. The network element sends a third message.
The message processing method according to any one of claims 29 to 34, wherein the third message includes a cause value, the cause value being used to indicate a reason for the related process of rejecting the PDU session.
The message processing method according to claim 35, wherein the cause value comprises: information indicating that an access technology type of the first PDU session is a non-3GPP access technology.
A message processing method, characterized in that the method comprises:

The session management network element determines control information for the protocol data unit PDU session of the terminal, and indication information indicating an access technology type of the PDU session for indicating the control information application;

The session management network element sends the control information and the indication information to the terminal by using an access and mobility management network element.
A message processing method, characterized in that the method comprises:

The access and mobility management network element receives control signaling from the session management network element; wherein the control signaling includes identification information of a protocol data unit PDU session of the terminal, the PDU session is based on a non-third generation partnership program a PDU session established by the 3GPP access network;

If the control signaling is triggered by the control plane, the access and mobility management network element refuses to activate the PDU session at the 3GPP access network.
An access and mobility management network element, comprising:

a communication unit, configured to receive control signaling from a session management network element, where the control signaling includes identification information of a protocol data unit PDU session of the terminal, the PDU session is based on a non-3rd generation partnership plan 3GPP access a PDU session established by the network;

a processing unit, configured to send, by using the 3GPP access network, a first message to the terminal, if the terminal is in an idle state in the non-3GPP access network, where the first message is The access and mobility management network element is triggered based on the control signaling.
The access and mobility management network element according to claim 39, wherein the control signaling is used to indicate that the access and mobility management network element passes or does not pass through the 3GPP access network. The terminal sends the first message;

The processing unit is specifically configured to: according to the control signaling, determine, by using the 3GPP access network, to send the first message to the terminal.
The access and mobility management network element according to claim 40, wherein the control signaling is used to indicate that the access and mobility management network element passes or does not pass through the 3GPP access network. The terminal sends the first message, including one of the following situations:

The control signaling further includes first indication information, where the first indication information is used to indicate that the access and mobility management network element sends the first to the terminal by using or not through the 3GPP access network. Message

The control signaling further includes or does not include second indication information, where the second indication information is used to indicate that the access and mobility management network element sends the first to the terminal by using the 3GPP access network. a message, where the control signaling is used to indicate that the access and mobility management network element does not pass the 3GPP access network to the terminal, if the control signaling does not include the second indication information. Sending the first message;

The control signaling further includes or does not include third indication information, where the third indication information is used to indicate that the access and mobility management network element does not send the first part to the terminal by using the 3GPP access network. a message, where the control signaling is used to indicate that the access and mobility management network element passes the 3GPP access network to the terminal, if the control signaling does not include the third indication information. Sending the first message.
The access and mobility management network element according to claim 39, wherein the control signaling is used to indicate that the control signaling is triggered by a control plane or triggered by a user plane;

The processing unit is specifically configured to: according to the control signaling, determine, by using the 3GPP access network, to send the first message to the terminal.
The access and mobility management network element according to claim 42, wherein the control signaling is used to indicate that the control signaling is triggered by a control plane or triggered by a user plane, and includes the following One of the situations:

The control signaling further includes fourth indication information, where the fourth indication information is used to indicate that the control signaling is triggered by the control plane, or is triggered by the user plane;

The control signaling further includes or does not include fifth indication information, where the fifth indication information is used to indicate that the control signaling is triggered by the control plane, where the control signaling does not include the a fifth indication information, where the control signaling is used to indicate that the control signaling is triggered by the user plane;

The control signaling further includes or does not include sixth indication information, where the sixth indication information is used to indicate that the control signaling is triggered by the user plane, where the control signaling does not include the The sixth indication information is used by the control signaling to indicate that the control signaling is triggered by the control plane.
The access and mobility management network element according to claim 39, wherein the control signaling further includes seventh indication information, where the seventh indication information is used to indicate a process related to the control signaling;

The processing unit is specifically configured to: determine, according to the seventh indication information, that the first message is sent to the terminal by or not through the 3GPP access network.
The access and mobility management network element according to claim 44, wherein the process related to control signaling includes any one of the following processes: a PDU session release process, a PDU session modification process, and session and service continuity, and User face function management process.
The access and mobility management network element of claim 39, wherein

The control signaling further includes an N1 session management container, where the processing unit is configured to: determine, according to information in the N1 session management container, whether to send the first message to the terminal by using or not through the 3GPP access network;

Alternatively, the control signaling further includes or does not include an N1 session management container, and the processing unit is specifically configured to: determine, according to the control signaling, that the N1 session management container is included or not, whether to pass or not pass the 3GPP connection. The incoming network sends a first message to the terminal.
The access and mobility management network element according to any one of claims 39 to 46, wherein the control signaling comprises N1N2 message transmission signaling.
An access and mobility management network element according to any one of claims 39 to 47, characterized in that

And if the processing unit determines that the first message is not sent to the terminal by using the 3GPP access network, the communications unit is further configured to send a response message to the session management network element, where the response The message includes at least one of the eighth indication information and the ninth indication information, where the eighth indication information is used to indicate that the terminal is unreachable, and the ninth indication information is used to indicate that the terminal is in the non-3GPP connection In the network is in an idle state.
An access and mobility management network element according to any one of claims 39 to 48, characterized in that

And if the processing unit determines to send the first message to the terminal by using the 3GPP access network, the communications unit is further configured to:

When the terminal is in an idle state in the 3GPP access network, the first message includes a paging message, and the paging message is sent to the terminal by using the 3GPP access network, where the paging message is sent. Used by the terminal to initiate a service request process; or,

When the terminal is in a connected state in the 3GPP access network, the first message includes a notification message, and the notification message is sent to the terminal by using the 3GPP access network, where the notification message is used by the terminal. The terminal initiates at least one of a PDU session establishment process and a PDU session release process.
The access and mobility management network element according to any one of claims 39 to 49, wherein the first message includes identification information or tenth indication information of the PDU session; the tenth indication information A process for instructing the terminal to initiate a PDU session.
The access and mobility management network element according to any one of claims 39 to 44, 46 to 50, wherein the control signaling is control signaling in any of the following processes: a PDU session release process, PDU session modification process and session and business continuity as well as user plane function management process.
An access and mobility management network element according to any one of claims 39 to 49 or 51, characterized in that

When the process related to the control signaling is a PDU session release process, the first message includes: a PDU session release command and/or indication information used to indicate that the terminal initiates a PDU session establishment;

Or, when the process related to the control signaling is a PDU session modification process, the first message includes: a PDU session modification command;

Or the first message includes: a PDU session modification command and a cause value, when the process related to the control signaling is a session and a service continuity and a user plane function management process;

Or, when the process related to the control signaling is a process triggered by a downlink data packet, the first message includes: the PDU session identifier.
The access and mobility management network element according to any one of claims 39 to 52, wherein the first message is specifically that the communication unit triggers the control signaling, The message sent by the terminal.
A session management network element, comprising:

a processing unit, configured to determine control signaling, where the control signaling includes identification information of a protocol data unit PDU session of the terminal; the PDU session is a PDU session established based on a non-3rd Generation Partnership Project 3GPP access network ;

a communication unit, configured to send the control signaling to an access and mobility management network element, where the control signaling is used by the access and mobility management network element after receiving the control signaling, If it is determined that the terminal is in an idle state in the non-3GPP access network, determining to send a first message to the terminal by using or not through a 3GPP access network, where the first message is the access and mobility The management network element is triggered based on the control signaling.
The session management network element according to claim 54, wherein the control signaling is used to indicate that the access and mobility management network element sends or not to the terminal through the 3GPP access network. Said the first message.
The session management network element according to claim 55, wherein the control signaling is used to indicate that the access and mobility management network element sends or not to the terminal through the 3GPP access network The first message, including one of the following situations:

The control signaling further includes first indication information, where the first indication information is used to indicate that the access and mobility management network element sends the first to the terminal by using or not through the 3GPP access network. Message

The control signaling further includes or does not include second indication information, where the second indication information is used to indicate that the access and mobility management network element sends the first to the terminal by using the 3GPP access network. a message, where the control signaling is used to indicate that the access and mobility management network element does not pass the 3GPP access network to the terminal, if the control signaling does not include the second indication information. Sending the first message;

The control signaling further includes or does not include third indication information, where the third indication information is used to indicate that the access and mobility management network element does not send the first part to the terminal by using the 3GPP access network. a message, where the control signaling is used to indicate that the access and mobility management network element passes the 3GPP access network to the terminal, if the control signaling does not include the third indication information. Sending the first message.
The session management network element according to claim 54, wherein the control signaling is used to indicate that the control signaling is triggered by a control plane or triggered by a user plane.
The session management network element according to claim 57, wherein the control signaling is used to indicate that the control signaling is triggered by a control plane or triggered by a user plane, and includes one of the following situations:

The control signaling further includes fourth indication information, where the fourth indication information is used to indicate that the control signaling is triggered by the control plane, or is triggered by the user plane;

The control signaling further includes or does not include fifth indication information, where the fifth indication information is used to indicate that the control signaling is triggered by the control plane, where the control signaling does not include the a fifth indication information, where the control signaling is used to indicate that the control signaling is triggered by the user plane;

The control signaling further includes or does not include sixth indication information, where the sixth indication information is used to indicate that the control signaling is triggered by the user plane, where the control signaling does not include the The sixth indication information is used by the control signaling to indicate that the control signaling is triggered by the control plane.
The session management network element according to claim 54, wherein the control signaling further includes seventh indication information, where the seventh indication information is used to indicate a process related to the control signaling.
The session management network element according to claim 58, wherein the process related to control signaling includes any one of the following processes: a PDU session release process, a PDU session modification process, and session and service continuity, and user plane function management. process.
A session management network element according to claim 55 or 56, wherein

The communication unit is further configured to acquire, by the access and mobility management network element, a connection management state of the terminal in the non-3GPP access network;

The processing unit is specifically configured to: determine the control signaling according to the connection management state; where, if the connection management state is an idle state, the control signaling is used to indicate the access and mobility management The network element sends the first message to the terminal by using the 3GPP access network.
The session management network element according to any one of claims 54 to 61, wherein the control signaling comprises N1N2 message transmission signaling.
The session management network element according to any one of claims 54 to 59, 61 to 62, wherein the control signaling is control signaling in any of the following processes: a PDU session release process, a PDU session modification process And session and business continuity as well as user plane function management process.
A terminal, comprising:

a communication unit, configured to receive a first message from the access and mobility management network element, where the first message is triggered by the access and mobility management network element based on the received control signaling, and is a message sent by the access and mobility management network element to the terminal through the 3GPP access network when determining that the terminal is in an idle state in a non-3rd Generation Partnership Project 3GPP access network; the control signaling And including identifier information of a protocol data unit PDU session of the terminal, where the PDU session is based on a PDU session established by the non-3GPP access network;

And a processing unit, configured to initiate, by using the 3GPP access network, a related process of the PDU session according to the first message.
The terminal according to claim 64, wherein the processing unit is specifically configured to:

Initiating a service request process when the terminal is in an idle state in the 3GPP access network;

Or, when the terminal is in a connected state in the 3GPP access network, initiate at least one of a PDU session establishment process and a PDU session release process.
The terminal according to claim 64 or 65, wherein the processing unit is specifically configured to:

And, according to the first message and the policy information, initiate a related process of the PDU session by using the 3GPP access network.
A terminal, comprising:

a communication unit, configured to: receive a second message from the access and mobility management network element from a third generation partnership plan 3GPP access network; wherein the second message includes control for a first protocol data unit PDU session Information, the control information is triggered by a control plane, the first PDU session is based on a PDU session established by a non-3GPP access network; and, according to the second message, to the access and mobility management network The element sends a third message, which is used to indicate a related procedure of rejecting the PDU session.
The terminal according to claim 67, characterized in that

If the control information includes a modification command for the first PDU session, the third message is specifically used to indicate that the modification process for the first PDU session is denied;

Or, if the control information includes a release command for the first PDU session, the third message is specifically used to indicate that the establishment process of the second PDU session is refused after the first PDU session is released; The second PDU session has the same data network name attribute as the first PDU session.
The terminal according to claim 67, characterized in that

The communication unit is further configured to: receive indication information from the access and mobility management network element; the indication information is used to indicate that the first PDU session is activated in a 3GPP access network, or is used to indicate the A PDU session is not activated on the 3GPP access network;

The communication unit performs the sending, according to the second message, a third message to the access and mobility management network element, specifically, according to the second message and the indication information, to the The incoming and outgoing mobility management network element sends a third message.
The terminal according to claim 69, characterized in that

If the indication information is used to indicate that the first PDU session is activated in the 3GPP access network, and the control information includes a modification command for the first PDU session, the third message is specifically used to indicate that the a modification process of the first PDU session;

Or, if the indication information is used to indicate that the first PDU session is not activated in a 3GPP access network, and the control information includes a release command for the first PDU session, the third message is specifically used to: Instructing to initiate a setup procedure for initiating a second PDU session after releasing the first PDU session; the second PDU session having the same data network name attribute as the first PDU session.
The terminal according to claim 69 or 70, wherein the terminal further comprises:

a processing unit, configured to: when the indication information is used to indicate that the first PDU session is activated by a 3GPP access network, select, according to the indication information, an access technology type of the first PDU session by a non-3GPP The incoming technology is modified into a 3GPP access technology, and information for indicating a change in access technology type of the first PDU session is recorded;

The communication unit performs the sending, according to the second message, a third message to the access and mobility management network element, specifically, according to the second message, and the recorded information, The access and mobility management network element sends a third message.
The terminal according to claim 69 or 70, wherein the terminal further comprises:

a processing unit, configured to: when the indication information is used to indicate that the first PDU session is activated by a 3GPP access network, select, according to the indication information, an access technology type of the first PDU session by a non-3GPP The technology is modified into 3GPP access technology;

The communication unit performs the sending, according to the second message, a third message to the access and mobility management network element, where the second message further includes: In the case of the indication information of the access technology type of the PDU session, the third message is sent to the access and mobility management network element according to the second message.
The terminal according to any one of claims 67 to 72, wherein the third message includes a cause value, the cause value being used to indicate a reason for the related process of rejecting the PDU session.
The terminal according to claim 73, wherein the cause value comprises: information indicating that an access technology type of the first PDU session is a non-3GPP access technology.
A session management network element, comprising:

a processing unit, configured to determine control information for a protocol data unit PDU session of the terminal, and indication information for indicating an access technology type of the PDU session used to indicate the control information application;

And a communication unit, configured to send the control information and the indication information to the terminal by using an access and mobility management network element.
An access and mobility management network element, comprising:

a communication unit, configured to receive control signaling from a session management network element, where the control signaling includes identification information of a protocol data unit PDU session of the terminal, the PDU session is based on a non-3rd generation partnership plan 3GPP access a PDU session established by the network;

And a processing unit, configured to refuse to activate the PDU session in the 3GPP access network if the control signaling is triggered by a control plane.
An access and mobility management network element, comprising: a memory and a processor, the memory for storing program code, when the program code is executed by the processor, enabling claims 1 to 15, The steps in the method of any of 38 are performed.
A session management network element, comprising: a memory and a processor, the memory for storing program code, when the program code is executed by the processor, such that any one of claims 16 to 25, 37 The steps in the method described in the item are performed.
A terminal, comprising: a memory for storing program code, the program code being executed by the processor, the method of any one of claims 26 to 36 The steps in are executed.
An access and mobility management network element, comprising: means for performing the steps of the signaling processing method according to any one of claims 1 to 15.
A session management network element, comprising: means for performing the steps of the signaling processing method according to any one of claims 16 to 25.
A signaling processing apparatus, comprising: means for performing the steps of the signaling processing method according to any one of claims 26 to 28.
A message processing apparatus, comprising: means for performing the steps of the message processing method according to any one of claims 29 to 36.
A session management network element, comprising: means for performing the steps in the message processing method of claim 37.
An access and mobility management network element, comprising: means for performing the steps in the message processing method of claim 38.
A computer readable storage medium, wherein the computer readable storage medium stores instructions that, when run on a computer, cause the computer to perform the method of any one of claims 1 to 38.
A computer program product, wherein the computer program product, when run on a computer, causes the computer to perform some or all of the steps of the method of any one of claims 1 to 38.