WO2020223898A1 - Information transmission method and apparatus, and network device - Google Patents

Abstract

Provided are an information transmission method and apparatus, and a network device. The method comprises: a target core network node determining control plane data transmission information; and the target core network node sending the control plane data transmission information to a terminal.

Description

Information transmission method and device, network equipment Technical field

The embodiments of the present application relate to the field of mobile communication technology, and specifically relate to an information transmission method and device, and network equipment.

Background technique

In the interworking process between the 5G System (5G System, 5GS) and the Evolved Packet System (EPS), when the 5GS provides services for the terminal, during the establishment of the Protocol Data Unit (PDU) session, The EPS bearer is established. In addition, EPS bearer IDs are allocated by the service access and mobility management entity (Access and Mobility Management Function, AMF). The EPS bearer ID assigned by AMF can be based on the session management function entity (Session Management Function). Management Function (SMF) request mode, that is, when SMF determines that an EPS bearer identifier needs to be allocated, it sends an allocation request to AMF. When the terminal moves from 5GS to EPS, the Session Management (SM) context of the terminal is transmitted through the N26 interface. In this way, system switching can be quickly realized and Uu interface signaling can be saved.

For PDU sessions optimized (Optimization) using the Control Plane (CP) Cellular Internet of Things (CIoT), the current process is still applicable. However, the problem to be solved is: how does the target core network (Core Network, CN) node determine whether the EPS bearer or public data network (Public Data Network, PDN) connection uses the control plane CIoT optimization, and how the terminal knows this optimization.

Summary of the invention

The embodiments of the application provide an information transmission method and device, and network equipment.

The information transmission method provided by the embodiment of the application includes:

The target core network node determines the control plane data transmission information;

The target core network node sends the control plane data transmission information to the terminal.

The information transmission device provided by the embodiment of the present application includes:

The determining unit is used to determine the control plane data transmission information;

The sending unit is configured to send the control plane data transmission information to the terminal.

The network device provided by the embodiment of the present application includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the above-mentioned information transmission method.

The chip provided in the embodiment of the present application is used to implement the above-mentioned information transmission method.

Specifically, the chip includes a processor, which is used to call and run a computer program from the memory, so that the device installed with the chip executes the above-mentioned information transmission method.

The computer-readable storage medium provided by the embodiments of the present application is used to store a computer program, and the computer program enables a computer to execute the above-mentioned information transmission method.

The computer program product provided by the embodiment of the present application includes computer program instructions, and the computer program instructions cause a computer to execute the above-mentioned information transmission method.

The computer program provided in the embodiments of the present application, when running on a computer, causes the computer to execute the above-mentioned information transmission method.

Through the above technical solution, the target core network node determines the control plane data transmission information, and notifies the control plane data transmission information to the terminal, so that the terminal can use the control plane for data transmission.

Description of the drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The exemplary embodiments and descriptions of the application are used to explain the application and do not constitute an improper limitation of the application. In the attached picture:

FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;

2 is a schematic flowchart of an information transmission method provided by an embodiment of the application;

Figure 3 is a schematic diagram of a handover process and a TAU process provided by an embodiment of the application;

Figure 4 is a schematic diagram of a TAU process provided by an embodiment of the application;

5 is a schematic diagram of the structural composition of an information transmission device provided by an embodiment of the application;

FIG. 6 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a chip of an embodiment of the present application;

Fig. 8 is a schematic block diagram of a communication system provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are a part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

The technical solutions of the embodiments of this application can be applied to various communication systems, such as: Global System of Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, and Wideband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system or 5G system, etc.

Exemplarily, the communication system 100 applied in the embodiment of the present application is shown in FIG. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal 120 (or called a communication terminal or a terminal). The network device 110 can provide communication coverage for a specific geographic area, and can communicate with terminals located in the coverage area. Optionally, the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or the wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks, or network devices in the future evolution of the Public Land Mobile Network (PLMN), etc.

The communication system 100 also includes at least one terminal 120 located within the coverage area of the network device 110. The "terminal" used here includes, but is not limited to, connection via wired lines, such as public switched telephone networks (PSTN), digital subscriber lines (Digital Subscriber Line, DSL), digital cables, and direct cable connections; And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM-FM Broadcast transmitter; and/or another terminal's device configured to receive/send communication signals; and/or Internet of Things (IoT) equipment. A terminal set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a "wireless terminal" or a "mobile terminal". Examples of mobile terminals include, but are not limited to, satellites or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/intranet PDA with internet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or others including radio phone transceivers Electronic device. Terminal can refer to access terminal, user equipment (User Equipment, UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user Device. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminals in 5G networks, or terminals in the future evolution of PLMN, etc.

Optionally, the terminals 120 may perform device-to-device (D2D) communication.

Optionally, the 5G system or 5G network may also be referred to as a New Radio (NR) system or NR network.

FIG. 1 exemplarily shows one network device and two terminals. Optionally, the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminals. This embodiment of the present application There is no restriction on this.

Optionally, the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.

It should be understood that the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices. Taking the communication system 100 shown in FIG. 1 as an example, the communication device may include a network device 110 and a terminal 120 with communication functions, and the network device 110 and the terminal 120 may be the specific devices described above, which will not be repeated here; The device may also include other devices in the communication system 100, such as other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.

It should be understood that the terms "system" and "network" in this article are often used interchangeably in this article. The term "and/or" in this article is only an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone B these three situations. In addition, the character "/" in this text generally indicates that the associated objects before and after are in an "or" relationship.

Fig. 2 is a schematic flowchart of an information transmission method provided by an embodiment of the application. As shown in Fig. 2, the information transmission method includes the following steps:

Step 201: The target core network node determines control plane data transmission information.

The technical solutions of the embodiments of the present application can be, but are not limited to, applied to an interworking process.

In the embodiment of the present application, the target core network node determines the control plane data transmission information based on at least one of the following information:

Whether the terminal supports the control plane optimization in EPS;

Whether the mobility management entity (Mobility Management Entity, MME) supports control plane optimization;

Whether first indication information from access and AMF is received, where the first indication information is used to indicate that a specific EPS bearer and/or a PDU session corresponding to a PDN connection uses a control plane transmission scheme;

MME local strategy.

In this embodiment of the application, the control plane data transmission information includes at least one of the following:

Second indication information, the second indication information is used to indicate which EPS bearers and/or PDN connections use the control plane transmission scheme; that is, the second indication is used to indicate which EPS bearers and/or PDN connections use the control plane transmission scheme (Ie Control Plane Optimization);

Third indication information, the third indication information is used to indicate that only EPS bearers and/or PDN connections of the control plane transmission scheme are used; that is, the third indication information is used to indicate which EPS bearers and/or PDN connections only use control Plane transmission scheme (ie Control Plane Optimization only);

Fourth indication information, the fourth indication information is used to indicate whether a specific EPS bearer and/or PDN connection uses a control plane transmission scheme, and the PDU session corresponding to the specific EPS bearer and/or PDN connection uses a control plane transmission scheme (Ie Control Plane Optimization);

Fifth indication information, where the fifth indication information is used to indicate whether all EPS bearers and/or PDN connections use a control plane transmission scheme (ie, Control Plane Optimization);

Sixth indication information, which is used to indicate whether all EPS bearers and/or PDN connections use only the control plane transmission scheme (ie, Control Plane Optimization only).

Step 202: The target core network node sends the control plane data transmission information to the terminal.

In the embodiment of the present application, the target core network node sending control plane data transmission information to the terminal can be implemented in any of the following ways:

Manner 1: The target core network node sends the control plane data transmission information to the terminal through the source network.

Specifically, the target core network node sends the control plane data transmission information to the source core network node; the source core network node sends the control plane data transmission information to the source access network node; the source access network The node sends the control plane data transmission information to the terminal through a radio resource control (Radio Resource Control, RRC) message. Here, the RRC message is, for example, a handover command.

In an embodiment, the MME obtains first capability information from the AMF, where the first capability information is used to indicate whether the terminal supports control plane optimization in EPS;

Wherein, the AMF obtains the first capability information from the terminal through a non-access stratum (NAS) message.

Manner 2: The target core network node sends the control plane data transmission information to the terminal through the target network.

In an embodiment, the MME obtains first capability information from the terminal through a Tracking Area Update (TAU) process, where the first capability information is used to indicate whether the terminal supports control plane optimization in EPS.

The following describes the technical solutions of the embodiments of the present application with specific application examples.

Application example 1: Non-CP optimization only PDU session

Non-CP optimization only PDU sessions can be switched between control plane data transfer (CP data transfer) and N3 data transfer (N3 data transfer). For this type of PDU session, in EPS interworking, the target core network node (such as MME) determines the EPS bearer and/or PDN connection corresponding to the PDU session and can use: 1) User plane data transfer (user plane data transfer) Solution; or 2) Control plane data transfer (CP data transfer) solution; or, 3) Control plane data transfer only (CP data transfer only) solution. Further, the target core network node determines the foregoing transmission scheme based on at least one of the following information:

1) Capability information of the terminal, which is used to indicate whether the terminal supports CP data transfer optimization (CP data transfer optimization);

2) MME capability information, the MME capability information is used to indicate whether the MME supports CP data transfer optimization (CP data transfer optimization);

3) The first indication information from the AMF, the first indication information is used to indicate a specific EPS bearer and/or a data transmission scheme used by the PDN connection;

4) MME local strategy.

The following describes this example in combination with different solutions.

FIG. 3 is a schematic diagram of the handover process and the TAU process provided by an embodiment of the application. As shown in FIG. 3, it includes the following steps:

Step 0: PDU session and QoS flow establishment in 5GS.

Step 1: NG-RAN sends a handover required (Handover required) message to AMF.

Step 2a: AMF sends Nsmf_PDU Session_ContextRequest message to PGW-C+SMF via V-SMF.

Step 2b: Perform N4 Session Modification between PGW-C+SMF and PGW-U+UPF.

Step 2c: PGW-C+SMF sends Nsmf_PDU Session_ContextRsd message to AMF via V-SMF.

Step 3: The AMF sends a Relocation request (Relocation request) message to the MME.

Step 4: The MME sends a Create session request (Create session request) message to the SGW.

Step 5: The SGW sends a Create session response (Create session response) message to the MME.

Step 6: MME sends a handover request (Handover request) message to E-UTRAN.

Step 7: E-UTRAN sends a handover request acknowledgment (Handover request ACK) message to the MME.

Step 8: The MME sends a direct data forwarding tunnel establishment request message to the SGW, and the SGW sends a direct data forwarding tunnel establishment response message to the MME.

Step 9: MME sends a redirection response (Relocation response) message to AMF.

Step 10a: AMF sends Nsmf_PDU Session_UpdateSMContextRequest message to PGW-C+SMF via V-SMF.

Step 10b: N4 Session Modification (N4 Session Modification) is performed between PGW-C+SMF and PGW-U+UPF.

Step 10c: PGW-C+SMF sends Session_UpdateSMContextResponse message to AMF via V-SMF.

Step 11a: AMF sends a handover command (Handover command) to NG-RAN.

Step 11b: The NG-RAN sends a handover command to the UE.

Step 12a: The UE sends a Handover Complete (Handover Complete) message to E-UTRAN.

Step 12b: E-UTRAN sends a handover notification (Handover Notify) message to the MME.

Step 12c: The MME sends a Relocation Complete Notification (Relocation Complete Notification) message to the AMF.

Step 12d: The AMF sends a Relocation Complete Ack (Relocation Complete Ack) message to the MME.

Step 13: The MME sends a Modify bearer Request (Modify bearer Request) message to the SGW.

Step 14a: The SGW sends a Modify bearer Request message to the PGW-C+SMF.

Step 15: Perform N4 Session Modification between PGW-C+SMF and PGW-U+UPF.

Step 16: PGW-C+SMF sends a Modify Bearer Response (Modify Bearer Response) message to the SGW.

Step 17: The SGW sends a Modify bearer Response (Modify bearer Response) message to the MME.

Step 18: The UE and the network side execute a TAU procedure (TAU procedure).

Step 19: PGW initiates dedicated bearer activation (PGW Initiated dedicated bearer activation).

Step 20: The MME sends a direct data forwarding tunnel deletion request message to the SGW, and the SGW sends a direct data forwarding tunnel deletion response message to the MME.

Step 21a: AMF sends a direct data forwarding tunnel deletion request message to PGW-C+SMF via V-SMF, and PGW-C+SMF sends a direct data forwarding tunnel deletion response message to AMF via V-SMF.

Step 21b: Perform N4 Session Modification between PGW-C+SMF and PGW-U+UPF.

●Scheme 1: Instruct the UE whether to use Control Plane Optimization in the handover command.

Referring to step 9 in FIG. 3, the MME sends a relocation response (Relocation response) message to the AMF, the relocation response message carries first information, and the first information is about control plane optimization in EPS (Control Plane Optimization) Information. Specifically, the first information includes at least one of the following:

Second indication information, where the second indication information is used to indicate the EPS bearer and/or PDN connection using a control plane transmission scheme (ie, Control Plane Optimization);

Third indication information, where the third indication information is used to indicate that only a control plane transmission scheme (ie Control Plane Optimization only) EPS bearer and/or PDN connection is used;

Fourth indication information, the fourth indication information is used to indicate whether a specific EPS bearer and/or PDN connection uses a control plane transmission scheme (ie Control Plane Optimization), and the specific EPS bearer and/or PDN connection corresponds to the PDU The session uses the control plane transmission scheme (ie Control Plane Optimization);

Fifth indication information, where the fifth indication information is used to indicate whether all EPS bearers and/or PDN connections use a control plane transmission scheme (ie, Control Plane Optimization);

Sixth indication information, which is used to indicate whether all EPS bearers and/or PDN connections use only the control plane transmission scheme (ie, Control Plane Optimization only).

In this example, the MME determines the foregoing first information through at least one of the following information:

Whether the terminal supports the control plane optimization in EPS;

Whether the MME supports control plane optimization;

Whether the first indication information from the AMF is received, the first indication information is used to indicate that a specific EPS bearer and/or a PDU session corresponding to a PDN connection uses a control plane transmission scheme (ie, Control Plane Optimization);

MME local strategy.

Further, referring to step 11a in FIG. 3, the AMF sends a handover request (Handover request) to the NG-RAN, and the handover command carries the foregoing first information. Referring to step 11b in FIG. 3, the NG-RAN sends a handover command to the UE, and the handover command carries the aforementioned first information.

Further, the MME may obtain the first capability information of the UE from the AMF, where the first capability information is used to indicate whether the UE supports control plane optimization in EPS. Before that, the AMF can obtain the above-mentioned first capability information from the UE through a NAS message (such as a registration request message).

Further, referring to step 3 in FIG. 3, the AMF sends a Relocation request message to the MME. The redirection request message carries first indication information, and the first indication information is used to indicate which EPS bearers and/or PDNs The connection corresponding to the PDU session uses the control plane transmission scheme (ie, Control Plane Optimization).

Further, referring to step 6 in FIG. 3, the MME sends a handover request message to the E-UTRAN, and the handover request message does not carry the mapped (ie, corresponding to the PDU session) EPS bearer and/or PDN connection related information. Example: If the MME determines that the EPS bearer and/or PDN connection uses the control plane transmission scheme (ie Control Plane Optimization), the MME will not carry the mapped EPS bearer and/or PDN connection in the handover request message sent to E-UTRAN Related information.

Further, referring to step 12a in FIG. 3, the UE sends a Handover Complete message to E-UTRAN. After step 12a, if the UE learns from the received system message that the network side supports the control plane transmission scheme, the UE The control plane transmission scheme can be used to transmit data to the network side.

●Scheme 2: Indicate in the EPS NAS message whether the UE uses Control Plane Optimization (Control Plane Optimization). The EPS NAS message is, for example, a TAU message, or a PDN connection establishment message, or a PDN connection modification message.

Referring to step 18 in Figure 3, the UE and the network side execute the TAU procedure. The MME can indicate the first information to the UE through the TAU procedure. The first information is about the control plane optimization in EPS. )Information. specifically,

Specifically, the first information includes at least one of the following:

Second indication information, where the second indication information is used to indicate the EPS bearer and/or PDN connection using a control plane transmission scheme (ie, Control Plane Optimization);

Third indication information, where the third indication information is used to indicate that only a control plane transmission scheme (ie Control Plane Optimization only) EPS bearer and/or PDN connection is used;

Fourth indication information, the fourth indication information is used to indicate whether a specific EPS bearer and/or PDN connection uses a control plane transmission scheme (ie Control Plane Optimization), and the specific EPS bearer and/or PDN connection corresponds to the PDU The session uses the control plane transmission scheme (ie Control Plane Optimization);

Fifth indication information, where the fifth indication information is used to indicate whether all EPS bearers and/or PDN connections use a control plane transmission scheme (ie, Control Plane Optimization);

Sixth indication information, which is used to indicate whether all EPS bearers and/or PDN connections use only the control plane transmission scheme (ie, Control Plane Optimization only).

In this example, the MME determines the foregoing first information through at least one of the following information:

Whether the terminal supports the control plane optimization in EPS;

Whether the MME supports control plane optimization;

Whether the first indication information from the AMF is received, the first indication information is used to indicate that a specific EPS bearer and/or a PDU session corresponding to a PDN connection uses a control plane transmission scheme (ie, Control Plane Optimization);

MME local strategy.

Further, through step 18 in FIG. 3, the MME can obtain the first capability information of the UE from the UE through the TAU process, and the first capability information is used to indicate whether the UE supports control plane optimization in EPS.

Further, referring to step 6 in FIG. 3, the MME sends a handover request message to the E-UTRAN, and the handover request message carries the mapped (that is, corresponding to the PDU session) EPS bearer and/or PDN connection related information. Example: If the MME determines that the EPS bearer and/or PDN connection uses the control plane transmission scheme (ie Control Plane Optimization), the MME sends the handover request message to E-UTRAN with the mapped EPS bearer and/or PDN connection. Related Information.

Further, referring to step 12a in FIG. 3, the UE sends a Handover Complete message to E-UTRAN. After step 12a, if the UE learns from the received system message that the network side supports the control plane transmission scheme, the UE The control plane transmission scheme can be used to transmit data to the network side.

Application example 2: Control plane data transfer only (CP data transfer only) PDU session

For a new PDU session, the attribute parameters corresponding to the PDU session include the data network name (Data Network Name, DNN) and/or the single network slice selection assistance information (Single Network Slice Selection Assistance Information, S-NSSAI), and its attributes The subscription information of the parameter does not include Invoke NIDD API indication information (that is, the PDU session will be anchored in the UPF), and the PDU session supports interworking with EPS.

1) If AMF contains control plane (Control Plane Only) indication information for one or more PDU sessions, these PDU sessions support interworking with EPS and are anchored in UPF, then AMF targets new PDUs The session also contains indication information of Control Plane Only.

2) If the AMF does not contain the control plane (Control Plane Only) indication information for any PDU session, the PDU session supports interworking with the EPS and is anchored in the UPF, then the AMF also applies to the new PDU session. It does not contain instructions for Control Plane Only (Control Plane Only).

Figure 4 is a schematic diagram of the TAU process provided by an embodiment of this application. As shown in Figure 4, it includes the following steps:

Step 1: TAU trigger.

Step 2: The UE sends a TAU request (TAU request) message to the eNB.

Step 3: The eNB sends a TAU request (TAU request) message to the MME.

Step 4: The MME sends a Context Request (Context Request) message to the AMF.

Step 5a: AMF sends Nsmf_PDU Session_UpdateSMContextRequest message to PGW-C+SMF.

Step 5b: N4 Session Modification (N4 Session Modification) is performed between PGW-C+SMF and PGW-U+UPF.

Step 5c: PGW-C+SMF sends Session_UpdateSMContextResponse message to AMF.

Step 6: AMF sends a Context Response (Context Response) message to MME.

Step 7: The UE and the network side perform authentication and security related procedures.

Step 8: The MME sends a Context Ack (Context Ack) message to the AMF.

Step 9: The MME sends a Create Session Request (Create Session Request) message to the SGW.

Step 10: The SGW sends a Modify bearer request (Modify bearer request) message to the PGW-C+SMF.

Step 11: Perform N4 Session Modification between PGW-C+SMF and PGW-U+UPF.

Step 12: The PGW-C+SMF sends a Modify bearer response message to the SGW.

Step 13: The SGW sends a Create Session Response (Create Session Response) message to the MME.

Step 14: MME initiates a location update (Update Location) to HSS+UDM.

Step 15: HSS+UDM sends Nudm_UECM_DeregistrationNotification message to AMF.

Step 15a: AMF sends a Nudm_SDM_Unsubscribe message to HSS+UDM.

Step 16: HSS+UDM sends a location update confirmation (Update Location ACK) message to the MME.

Step 17: The MME sends a TAU Accept (TAU Accept) message to the UE.

Step 18: The UE sends a TAU Complete (TAU Complete) message to the MME.

Step 19: PGW initiates dedicated bearer setup (PGW Initiated dedicated bearer setup).

The difference between this application example and the second solution in application example one is that the AMF can provide first information about the EPS bearer and/or PDN connection using only the control plane transmission solution (ie Control Plane Optimization only) Information, or information about which EPS bearers and/or PDU sessions corresponding to PDN connections only use the control plane transmission scheme (ie, Control Plane Optimization only). Referring to step 4 in Figure 4, the MME sends a context request (Context request) message to the AMF. The AMF can provide the first information based on the context request message. Specifically, the context request message can indicate whether the AMF is required to provide the first information.述第一信息。 Said first information.

It should be noted that the foregoing technical solutions in the embodiments of the present application can also be applied to scenarios where the UE moves between different core network nodes.

FIG. 5 is a schematic diagram of the structural composition of an information transmission device provided by an embodiment of the application. As shown in FIG. 5, the information transmission device includes:

The determining unit 501 is configured to determine control plane data transmission information;

The sending unit 502 is configured to send the control plane data transmission information to the terminal.

In an implementation manner, the sending unit 502 is configured to send the control plane data transmission information to the terminal through the source network.

In an embodiment, the sending unit 502 is configured to send the control plane data transmission information to a source core network node; wherein, the source core network node sends the control plane data transmission information to a source access network node The source access network node sends the control plane data transmission information to the terminal through an RRC message.

In an embodiment, the device further includes:

An acquiring unit (not shown in the figure), configured to acquire first capability information from AMF, where the first capability information is used to indicate whether the terminal supports control plane optimization in EPS;

Wherein, the AMF obtains the first capability information from the terminal through a NAS message.

In an implementation manner, the sending unit 502 is configured to send the control plane data transmission information to the terminal through the target network.

In an embodiment, the device further includes:

The acquiring unit (not shown in the figure) is configured to acquire first capability information from the terminal through a TAU process, where the first capability information is used to indicate whether the terminal supports control plane optimization in EPS.

In an implementation manner, the determining unit 501 is configured to determine the control plane data transmission information based on at least one of the following information:

Whether the terminal supports the control plane optimization in EPS;

Whether the MME supports control plane optimization;

Whether the first indication information from the AMF is received, the first indication information is used to indicate that a specific EPS bearer and/or a PDU session corresponding to a PDN connection uses a control plane transmission scheme;

MME local strategy.

In an embodiment, the control plane data transmission information includes at least one of the following:

Second indication information, where the second indication information is used to indicate the EPS bearer and/or PDN connection using the control plane transmission scheme;

Third indication information, where the third indication information is used to indicate that only the EPS bearer and/or PDN connection of the control plane transmission scheme is used;

Fourth indication information, the fourth indication information is used to indicate whether a specific EPS bearer and/or PDN connection uses a control plane transmission scheme, and the PDU session corresponding to the specific EPS bearer and/or PDN connection uses a control plane transmission scheme ；

Fifth indication information, where the fifth indication information is used to indicate whether all EPS bearers and/or PDN connections use a control plane transmission scheme;

Sixth indication information, where the sixth indication information is used to indicate whether all EPS bearers and/or PDN connections only use the control plane transmission scheme.

Those skilled in the art should understand that the relevant description of the foregoing information transmission device in the embodiment of the present application can be understood with reference to the relevant description of the information transmission method in the embodiment of the present application.

FIG. 6 is a schematic structural diagram of a communication device 600 provided by an embodiment of the present application. The communication device may be a network device, such as a core network node. The communication device 600 shown in FIG. 6 includes a processor 610, and the processor 610 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 6, the communication device 600 may further include a memory 620. The processor 610 may call and run a computer program from the memory 620 to implement the method in the embodiment of the present application.

The memory 620 may be a separate device independent of the processor 610, or may be integrated in the processor 610.

Optionally, as shown in FIG. 6, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.

The transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include an antenna, and the number of antennas may be one or more.

Optionally, the communication device 600 may specifically be a network device in an embodiment of the present application, and the communication device 600 may implement the corresponding process implemented by the network device in each method of the embodiment of the present application. For brevity, details are not repeated here. .

Optionally, the communication device 600 may specifically be a mobile terminal/terminal according to an embodiment of the application, and the communication device 600 may implement the corresponding procedures implemented by the mobile terminal/terminal in each method of the embodiments of the application. For the sake of brevity, This will not be repeated here.

FIG. 7 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 700 shown in FIG. 7 includes a processor 710, and the processor 710 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 7, the chip 700 may further include a memory 720. Wherein, the processor 710 may call and run a computer program from the memory 720 to implement the method in the embodiment of the present application.

The memory 720 may be a separate device independent of the processor 710, or may be integrated in the processor 710.

Optionally, the chip 700 may further include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

Optionally, the chip 700 may further include an output interface 740. The processor 710 can control the output interface 740 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.

Optionally, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the network device in the various methods of the embodiment of the present application. For brevity, details are not described herein again.

Optionally, the chip can be applied to the mobile terminal/terminal in the embodiments of the present application, and the chip can implement the corresponding procedures implemented by the mobile terminal/terminal in the various methods of the embodiments of the present application. Repeat.

It should be understood that the chip mentioned in the embodiment of the present application may also be referred to as a system-level chip, a system-on-chip, a system-on-chip, or a system-on-chip.

FIG. 8 is a schematic block diagram of a communication system 900 provided by an embodiment of the present application. As shown in FIG. 8, the communication system 900 includes a terminal 910 and a network device 920.

Wherein, the terminal 910 may be used to implement the corresponding functions implemented by the terminal in the foregoing method, and the network device 920 may be used to implement the corresponding functions implemented by the network device in the foregoing method. For brevity, details are not described herein again.

It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The aforementioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. The volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (Double Data Rate SDRAM, DDR SDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), Synchronous Link Dynamic Random Access Memory (Synchlink DRAM, SLDRAM) ) And Direct Rambus RAM (DR RAM). It should be noted that the memories of the systems and methods described herein are intended to include, but are not limited to, these and any other suitable types of memories.

It should be understood that the foregoing memory is exemplary but not restrictive. For example, the memory in the embodiment of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiment of the present application is intended to include but not limited to these and any other suitable types of memory.

The embodiments of the present application also provide a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For brevity, here No longer.

Optionally, the computer-readable storage medium may be applied to the mobile terminal/terminal in the embodiments of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the mobile terminal/terminal in the various methods of the embodiments of the present application, for It's concise, so I won't repeat it here.

The embodiments of the present application also provide a computer program product, including computer program instructions.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, it is not here. Repeat it again.

Optionally, the computer program product can be applied to the mobile terminal/terminal in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding procedures implemented by the mobile terminal/terminal in the various methods of the embodiments of the present application, for the sake of brevity , I won’t repeat it here.

The embodiment of the present application also provides a computer program.

Optionally, the computer program can be applied to the network device in the embodiment of the present application. When the computer program runs on the computer, the computer is caused to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity , I won’t repeat it here.

Optionally, the computer program can be applied to the mobile terminal/terminal in the embodiments of the present application. When the computer program runs on the computer, the computer can execute the corresponding methods implemented by the mobile terminal/terminal in the various methods of the embodiments of the present application. For the sake of brevity, the process will not be repeated here.

A person of ordinary skill in the art may be aware that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to realize the described functions, but this realization should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

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

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims (21)

1. An information transmission method, the method includes:

   The target core network node determines the control plane data transmission information;

   The target core network node sends the control plane data transmission information to the terminal.
2. The method according to claim 1, wherein the target core network node sending control plane data transmission information to the terminal comprises:

   The target core network node sends the control plane data transmission information to the terminal through the source network.
3. The method according to claim 2, wherein the target core network node sending the control plane data transmission information to the terminal via the source network comprises:

   Sending, by the target core network node, the control plane data transmission information to the source core network node;

   Sending, by the source core network node, the control plane data transmission information to the source access network node;

   The source access network node sends the control plane data transmission information to the terminal through a radio resource control RRC message.
4. The method according to claim 3, wherein the method further comprises:

   The mobility management entity MME obtains first capability information from the access and mobility management entity AMF, where the first capability information is used to indicate whether the terminal supports control plane optimization in the evolved packet system EPS;

   Wherein, the AMF obtains the first capability information from the terminal through a non-access stratum NAS message.
5. The method according to claim 1, wherein the target core network node sending control plane data transmission information to the terminal comprises:

   The target core network node sends the control plane data transmission information to the terminal through the target network.
6. The method according to claim 5, wherein the method further comprises:

   The MME obtains first capability information from the terminal through the tracking area update TAU process, where the first capability information is used to indicate whether the terminal supports control plane optimization in the EPS.
7. The method according to any one of claims 1 to 6, wherein the target core network node determines the control plane data transmission information based on at least one of the following information:

   Whether the terminal supports the control plane optimization in EPS;

   Whether the MME supports control plane optimization;

   Whether the first indication information from the AMF is received, the first indication information is used to indicate that a specific EPS bearer and/or a protocol data unit PDU session corresponding to a public data network PDN connection uses a control plane transmission scheme;

   MME local strategy.
8. The method according to any one of claims 1 to 7, wherein the control plane data transmission information includes at least one of the following:

   Second indication information, where the second indication information is used to indicate the EPS bearer and/or PDN connection using the control plane transmission scheme;

   Third indication information, where the third indication information is used to indicate that only the EPS bearer and/or PDN connection of the control plane transmission scheme is used;

   Fourth indication information, the fourth indication information is used to indicate whether a specific EPS bearer and/or PDN connection uses a control plane transmission scheme, and the PDU session corresponding to the specific EPS bearer and/or PDN connection uses a control plane transmission scheme ；

   Fifth indication information, where the fifth indication information is used to indicate whether all EPS bearers and/or PDN connections use a control plane transmission scheme;

   Sixth indication information, where the sixth indication information is used to indicate whether all EPS bearers and/or PDN connections only use the control plane transmission scheme.
9. An information transmission device, the device comprising:

   The determining unit is used to determine the control plane data transmission information;

   The sending unit is configured to send the control plane data transmission information to the terminal.
10. The apparatus according to claim 9, wherein the sending unit is configured to send the control plane data transmission information to the terminal through a source network.
11. The apparatus according to claim 10, wherein the sending unit is configured to send the control plane data transmission information to a source core network node; wherein the source core network node sends the control plane to a source access network node Plane data transmission information; the source access network node sends the control plane data transmission information to the terminal through an RRC message.
12. The device according to claim 11, wherein the device further comprises:

    The obtaining unit is configured to obtain first capability information from the AMF, where the first capability information is used to indicate whether the terminal supports control plane optimization in EPS;

    Wherein, the AMF obtains the first capability information from the terminal through a NAS message.
13. The apparatus according to claim 9, wherein the sending unit is configured to send the control plane data transmission information to the terminal through a target network.
14. The device according to claim 13, wherein the device further comprises:

    The acquiring unit is configured to acquire first capability information from the terminal through the TAU process, where the first capability information is used to indicate whether the terminal supports control plane optimization in EPS.
15. The apparatus according to any one of claims 9 to 14, wherein the determining unit is configured to determine the control plane data transmission information based on at least one of the following information:

    Whether the terminal supports the control plane optimization in EPS;

    Whether the MME supports control plane optimization;

    Whether the first indication information from the AMF is received, the first indication information is used to indicate that a specific EPS bearer and/or a PDU session corresponding to a PDN connection uses a control plane transmission scheme;

    MME local strategy.
16. The apparatus according to any one of claims 9 to 15, wherein the control plane data transmission information includes at least one of the following:

    Second indication information, where the second indication information is used to indicate the EPS bearer and/or PDN connection using the control plane transmission scheme;

    Third indication information, where the third indication information is used to indicate that only the EPS bearer and/or PDN connection of the control plane transmission scheme is used;

    Fourth indication information, the fourth indication information is used to indicate whether a specific EPS bearer and/or PDN connection uses a control plane transmission scheme, and the PDU session corresponding to the specific EPS bearer and/or PDN connection uses a control plane transmission scheme ；

    Fifth indication information, where the fifth indication information is used to indicate whether all EPS bearers and/or PDN connections use a control plane transmission scheme;

    Sixth indication information, where the sixth indication information is used to indicate whether all EPS bearers and/or PDN connections only use the control plane transmission scheme.
17. A network device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute any one of claims 1 to 8 Methods.
18. A chip comprising: a processor, configured to call and run a computer program from a memory, so that the device installed with the chip executes the method according to any one of claims 1 to 8.
19. A computer-readable storage medium for storing a computer program that enables a computer to execute the method according to any one of claims 1 to 8.
20. A computer program product comprising computer program instructions that cause a computer to execute the method according to any one of claims 1 to 8.
21. A computer program that causes a computer to execute the method according to any one of claims 1 to 8.

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