WO2019024615A1 - 下行信息的发送方法、接入及移动性管理功能实体及网络功能实体 - Google Patents

下行信息的发送方法、接入及移动性管理功能实体及网络功能实体 Download PDF

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Publication number
WO2019024615A1
WO2019024615A1 PCT/CN2018/091309 CN2018091309W WO2019024615A1 WO 2019024615 A1 WO2019024615 A1 WO 2019024615A1 CN 2018091309 W CN2018091309 W CN 2018091309W WO 2019024615 A1 WO2019024615 A1 WO 2019024615A1
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Prior art keywords
entity
downlink
amf
service
signaling
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PCT/CN2018/091309
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English (en)
French (fr)
Inventor
刘超
孙滔
Original Assignee
中国移动通信有限公司研究院
中国移动通信集团有限公司
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Application filed by 中国移动通信有限公司研究院, 中国移动通信集团有限公司 filed Critical 中国移动通信有限公司研究院
Priority to US16/633,534 priority Critical patent/US11375474B2/en
Priority to EP18841629.1A priority patent/EP3664482B1/en
Publication of WO2019024615A1 publication Critical patent/WO2019024615A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/20—Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/005—Transmission of information for alerting of incoming communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states

Definitions

  • the present disclosure relates to the field of communications technologies, and in particular, to a method for transmitting downlink information, an AMF entity, and an NF entity.
  • the fifth-generation mobile communication technology (5G, 5th-Generation) network redefines a network architecture, the core network adopts a service architecture, and each network A Serviced Interface (SBI) is used between NF (Network Function) entities.
  • SBI Serviced Interface
  • the Access and Mobility Management Function (AMF) entity provides only two services: the Namf_Communication service and the Namf_EventExposure service.
  • the Namf_Communication service is mainly used by other NF entities to perform packet data unit (PDU, packet data unit) through N2, N1 interface and terminal (UE, User Equipment) and radio access network (RAN, Radio Access Network).
  • PDU packet data unit
  • UE User Equipment
  • RAN Radio Access Network
  • the Namf_EventExposure service is mainly used for: other NF entities use the service to subscribe or unsubscribe information about the status and location of the AMF entity; the AMF entity uses the service to report the status and location of the AMF entity to other NF entities.
  • the other NF entities are, for example, entities such as a Uniform Database (UDM), a Policy Control Function (PCF), a Session Management Function (SMF), and a Network Exposure Function (NEF).
  • UDM Uniform Database
  • PCF Policy Control Function
  • SMF Session Management Function
  • NEF Network Exposure Function
  • the Namf_Communication service can be used for sending downlink information.
  • the signaling process is generally: first, the UDM entity sends the downlink signaling to the AMF entity by calling the Namf_Communication service of the AMF entity;
  • the AMF entity pages the UE, and after receiving the paging, the UE establishes a Radio Resource Control (RRC) connection to enter the connected state, and sends a service request message to the AMF entity; finally, The AMF entity sends downlink signaling to the UE.
  • RRC Radio Resource Control
  • the signaling process is generally: first, the SMF entity sends an indication message indicating that the SMF entity needs to send downlink data by calling the Namf_Communication service of the AMF entity to the AMF entity; Then, optionally, when the UE may be in an idle state, the AMF entity pages the UE, and after receiving the paging, the UE establishes an RRC connection to enter a connected state, and sends a service request message to the AMF entity; finally, the AMF entity initiates establishment.
  • the process carried by the user plane establishes a data plane channel for the user.
  • An object of the embodiments of the present disclosure is to provide a method for transmitting downlink information, an AMF entity, and an NF entity, so as to fully utilize the services of the AMF entity.
  • an embodiment of the present disclosure provides a method for sending downlink information, including:
  • the AMF entity receives a first notification message sent by the NF entity for invoking the first service of the AMF entity;
  • the AMF sends, to the NF entity, indication information indicating that the UE has entered the connected state;
  • the AMF sends downlink information to the UE.
  • an embodiment of the present disclosure provides a method for sending downlink information, including:
  • the NF entity sends a first notification message to the AMF entity for invoking the first service of the AMF entity;
  • the NF entity sends a second notification message to the AMF entity for invoking a second service of the AMF entity.
  • an embodiment of the present disclosure provides an AMF entity, including a transmitter and a receiver;
  • the receiver is configured to receive a first notification message sent by an NF entity for invoking a first service of the AMF entity;
  • the transmitter is configured to send, to the NF entity, indication information that indicates that the UE has entered a connected state;
  • the receiver is further configured to receive a second notification message sent by the NF entity to invoke a second service of the AMF entity;
  • the transmitter is further configured to send downlink information to the UE.
  • an embodiment of the present disclosure provides an NF entity, including a transmitter and a receiver;
  • the transmitter is configured to send, to an AMF entity, a first notification message for invoking a first service of the AMF entity;
  • the receiver is configured to receive indication information that is sent by the AMF entity to indicate that the UE has entered a connected state
  • the transmitter is further configured to send, to the AMF entity, a second notification message for invoking a second service of the AMF entity.
  • an embodiment of the present disclosure provides an AMF entity, including a memory, a processor, and a computer program stored on the memory and executable on the processor; the processor implements the program The above method for transmitting downlink information applied to an AMF entity.
  • an embodiment of the present disclosure provides an NF entity, including a memory, a processor, and a computer program stored on the memory and executable on the processor; the processor implements the program The above method for transmitting downlink information applied to an NF entity.
  • an embodiment of the present disclosure provides a computer readable storage medium having stored thereon a computer program, the program being executed by a processor to implement the steps in the method for transmitting downlink information applied to an AMF entity.
  • an embodiment of the present disclosure provides a computer readable storage medium, where a computer program is stored thereon, and when the program is executed by the processor, the steps in the method for transmitting downlink information applied to the NF entity are implemented.
  • FIG. 1 is a flowchart showing a method of transmitting next line information according to an embodiment of the present disclosure
  • FIG. 2 is a flowchart of a downlink signal sent by a UDM entity of a specific example 1 of the present disclosure
  • 3 is a flow chart showing the SMF entity of the specific example 2 of the present disclosure transmitting downlink data
  • FIG. 4 is a flowchart showing another method for transmitting downlink information according to an embodiment of the present disclosure
  • FIG. 5 is a schematic structural diagram of an AMF entity according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of an NF entity according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of another AMF entity according to an embodiment of the present disclosure.
  • FIG. 8 is a block diagram showing another NF entity of an embodiment of the present disclosure.
  • the function of the Namf_Communication service provided by the AMF entity is too large, inconvenient and flexible, independent expansion and expansion, and cannot be flexibly combined, so that the advantages of the service are not fully exerted, and the existing downlink information transmission method is caused.
  • the services of the AMF entity cannot be fully utilized.
  • the AMF entity adds a separate service, which may be a mobile station called (MT, Mobile Terminated) service, or a Namf_MobileTermination Enable UEReachability service, compared to the related art.
  • the NF entity (that is, other NF entities except the AMF entity) is called when there is downlink information to be sent.
  • the NF entity may first ensure that the UE enters the connected state by calling the new service of the AMF entity, and then send the downlink information to the UE by calling the Namf_Communication service of the AMF entity.
  • the AMF entity can be more services, more easily expanded, and more easily combined, and the downlink information transmission process fully utilizes the services of the AMF entity.
  • an embodiment of the present disclosure provides a method for sending downlink information, which is applied to an AMF entity, including:
  • Step 101 The AMF entity receives a first notification message sent by the NF entity to invoke the first service of the AMF entity.
  • Step 102 The AMF entity sends, to the NF entity, indication information indicating that the UE has entered the connected state.
  • Step 103 The AMF entity receives a second notification message sent by the NF entity to invoke a second service of the AMF entity.
  • Step 104 The AMF entity sends downlink information to the UE.
  • the method for transmitting the downlink information in the embodiment of the present disclosure by receiving a first notification message sent by the NF entity for invoking the first service of the AMF entity, sending, to the NF entity, indication information indicating that the UE has entered the connected state, receiving the NF
  • the second notification message sent by the entity to invoke the second service of the AMF entity sends the downlink information to the UE, so that when the NF entity has downlink information to be sent, the first service of the AMF entity is first invoked to ensure that the UE enters the connected state. Then, the second service of the AMF entity is called to perform downlink information transmission, thereby fully utilizing the service of the AMF entity.
  • the NF entity in step 101 is specifically an NF entity other than the AMF entity in the network, such as a UDM entity, a PCF entity, an SMF entity, an NEF entity, and the like.
  • the AMF entity may initiate paging until the UE is paged, and the UE establishes an RRC connection to enter the connection. state. Therefore, when the UE is in the idle state, after the step 101 and before the step 102, the method of the embodiment of the present disclosure may further include:
  • the AMF entity may determine that the UE has entered the connected state.
  • step 101 when the UE is in the connected state, the AMF entity may directly perform step 102.
  • the first service is an AMF entity's new service compared to the related art, and mainly performs optional UE paging.
  • the first service may be an MT service, or a Namf_MobileTermination EnableUEReachability service or the like.
  • the first notification message may be an MT service notification message. Since the paging function of the AMF entity is relatively independent and does not involve modification of the terminal context, paging signaling accounts for a large proportion of the entire network signaling, and only some terminals need to use the paging service of the AMF entity, for example, The MICO terminal does not need the paging service of the AMF entity. The number of paging signaling is strongly related to different deployment locations, different usage times, and different customer types of the carrier network. Therefore, the MT service is added to the AMF entity to satisfy the AMF. The need for strong independent expansion and expansion of entities.
  • the second service may be a Namf_Communication service, and mainly serves the transmission of downlink information.
  • the first notification message may carry indication information for indicating that the NF entity has downlink information to be sent.
  • the downlink information that the NF entity needs to send may be downlink signaling, downlink data, or downlink SMS.
  • the downlink signaling may be signaling that the NF entity needs to send to the UE, or may be used to trigger the AMF entity to send downlink signaling to the UE. For example, if the UDM entity sends the signaling A to the AMF entity, and the signaling A is used to trigger the AMF entity to send the signaling B to the UE, the AMF entity sends the signaling B to the UE.
  • the downlink signaling may be carried in the second notification message when the downlink information that the NF entity needs to send is the downlink signaling.
  • the above step 104 is specifically:
  • the AMF entity sends the downlink signaling to the UE, or the downlink signaling triggers downlink signaling sent by the AMF entity.
  • the second notification message may carry a user plane establishment signaling for instructing the AMF to establish a user plane for the downlink data, when the downlink information to be sent by the NF entity is the downlink data.
  • the foregoing step 104 may be specifically:
  • the AMF entity establishes a user plane data channel between the NF entity and the UE, so that the NF entity sends the downlink data to the UE through the user plane data channel.
  • the UDM entity has downlink signaling to be sent and the UE may be in an idle state.
  • the downlink signaling that the UDM entity needs to send may be the signaling that needs to be sent to the UE, or may be used to trigger the AMF entity to send downlink signaling to the UE.
  • the sending process of the downlink information in the first example is specifically as follows:
  • Step 21 The UDM entity sends an MT service notification message for invoking the MT service of the AMF entity to the AMF entity, and instructs the UDM entity to have downlink information to be sent.
  • Step 22 The AMF entity sends a paging message for paging the UE.
  • Step 23 After receiving the paging message, the UE establishes an RRC connection to enter a connection state, and sends a service request message to the AMF entity.
  • Step 24 The AMF entity sends an MT service feedback message to the UDM entity, where the MT service feedback message carries indication information indicating that the UE has entered the connected state.
  • Step 25 The UDM entity sends the downlink signaling that needs to be sent to the AMF entity, and invokes the Namf_Communication service of the AMF entity.
  • Step 26 The AMF entity sends downlink signaling to the UE, where the downlink signaling may be the signaling received by the AMF entity or the downlink signaling triggered by the AMF entity.
  • the SMF entity has downlink data to be sent and the UE may be in an idle state.
  • the sending process of the downlink information in the second example is specifically as follows:
  • Step 31 The SMF entity sends an MT service notification message for calling the MT service of the AMF entity to the AMF entity, and instructs the UDM entity to have downlink information to be sent.
  • Step 32 The AMF entity sends a paging message for paging the UE.
  • Step 33 After receiving the paging message, the UE establishes an RRC connection to enter a connection state, and sends a service request message to the AMF entity.
  • Step 34 The AMF entity sends an MT service feedback message to the SMF entity, where the MT service feedback message carries indication information indicating that the UE has entered the connected state.
  • Step 35 The SMF entity sends a downlink data notification message to the AMF entity for invoking the Namf_Communication service of the AMF entity, where the downlink data notification message carries a user plane signaling for instructing the SMF entity to establish a user plane for the downlink data.
  • Step 36 The AMF entity initiates a process of establishing a user plane bearer, and establishes a user plane data channel between the SMF entity and the UE, so that the SMF entity sends downlink data to the UE through the user plane data channel.
  • an embodiment of the present disclosure further provides a method for sending downlink information, which is applied to an NF entity, including:
  • Step 401 The NF entity sends a first notification message for calling the first service of the AMF entity to the AMF entity.
  • Step 402 The NF entity receives the indication information that is sent by the AMF entity to indicate that the UE has entered the connected state.
  • Step 403 The NF entity sends a second notification message for calling the second service of the AMF entity to the AMF entity.
  • the method for transmitting the downlink information in the embodiment of the present disclosure by sending a first notification message for invoking the first service of the AMF entity to the AMF entity, receiving the indication information sent by the AMF entity to indicate that the UE has entered the connected state, to the AMF
  • the entity sends a second notification message for invoking the second service of the AMF entity, so that when the NF entity has downlink information to be sent, the first service of the AMF entity is first called to ensure that the UE enters the connected state, and then the AMF entity is called.
  • the second service performs downlink information transmission to fully utilize the services of the AMF entity.
  • the first service is an MT service.
  • the second service is a Namf_Communication service.
  • the first notification message carries indication information for indicating that the NF entity has downlink information to be sent.
  • the downlink information that the NF entity needs to send is downlink signaling, downlink data, or downlink short message, where the downlink signaling is signaling that the NF entity needs to send to the UE, or is used to trigger the AMF.
  • the entity sends downlink signaling to the signaling of the UE.
  • the second notification message when the downlink information that the NF entity needs to send is the downlink signaling, the second notification message carries the downlink signaling.
  • the second notification message when the downlink information to be sent by the NF entity is downlink data, the second notification message carries a user plane establishment signaling for instructing the AMF to establish a user plane for downlink data.
  • the AMF entity includes a processor 51, a transmitter 52, and a receiver 53.
  • the receiver 53 is configured to receive a first notification message that is sent by the NF entity and used to invoke the first service of the AMF entity.
  • the transmitter 52 is configured to send, to the NF entity, indication information indicating that the UE has entered a connected state;
  • the receiver 53 is further configured to receive a second notification message that is sent by the NF entity and used to invoke the second service of the AMF entity.
  • the transmitter 52 is further configured to send downlink information to the UE.
  • the transmitter 52 is further configured to send a paging message for paging the UE.
  • the receiver 53 is further configured to receive a service request message sent by the UE.
  • the first service is an MT service.
  • the second service is a Namf_Communication service.
  • the first notification message carries indication information that is used to indicate that the NF entity has downlink information to be sent.
  • the downlink information that the NF entity needs to send is downlink signaling, downlink data, or downlink short message, where the downlink signaling is signaling that is sent by the NF entity to the UE, or is used to trigger the The AMF entity sends downlink signaling to the signaling of the UE.
  • the second notification message carries the downlink signaling
  • the transmitter 52 is further configured to: send the The downlink signaling is performed, or the downlink signaling triggers downlink signaling sent by the AMF entity.
  • the second notification message carries a user plane establishment signaling for instructing the AMF to establish a user plane for downlink data.
  • the AMF entity further includes a processor, the processor 51 is configured to: establish a user plane data channel between the NF entity and the UE, to enable the NF entity to pass the user plane data channel to the The UE sends the downlink data.
  • bus 50 may include any number of interconnected buses and bridges, and bus 50 will include one or more processors represented by processor 51 and memory represented by memory 54. The various circuits are connected together. The bus 50 can also connect various other circuits, such as peripherals, voltage regulators, and power management circuits, as is well known in the art, and therefore, will not be further described herein.
  • Bus interface 55 provides an interface between bus 50, transmitter 52 and receiver 53. Transmitter 52 and receiver 53 may be a transceiver that provides means for communicating with various other devices on a transmission medium.
  • the processor 51 is responsible for managing the bus 50 and the usual processing, and the memory 54 can be used to store data used by the processor 51 when performing operations.
  • the base station includes a transmitter 61 and a receiver 62.
  • the sender 61 is configured to send, to the AMF entity, a first notification message for invoking the first service of the AMF entity.
  • the receiver 62 is configured to receive indication information that is sent by the AMF entity to indicate that the UE has entered a connected state.
  • the transmitter 61 is further configured to send, to the AMF entity, a second notification message for invoking a second service of the AMF entity.
  • the first service is an MT service.
  • the second service is a Namf_Communication service.
  • the first notification message carries indication information that is used to indicate that the NF entity has downlink information to be sent.
  • the downlink information that the NF entity needs to send is downlink signaling, downlink data, or downlink short message, where the downlink signaling is signaling that is sent by the NF entity to the UE, or is used to trigger the The AMF entity sends downlink signaling to the signaling of the UE.
  • the second notification message carries the downlink signaling.
  • the second notification message carries a user plane establishment signaling for instructing the AMF to establish a user plane for downlink data.
  • bus 60 may include any number of interconnected buses and bridges, and bus 60 will include one or more processors represented by processor 63 and memory represented by memory 64. The various circuits are connected together.
  • the bus 60 can also connect various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art, and therefore, will not be further described herein.
  • Bus interface 65 provides an interface between bus 60, transmitter 61 and receiver 62.
  • Transmitter 61 and receiver 62 may be a transceiver that provides means for communicating with various other devices on a transmission medium.
  • the processor 63 is responsible for managing the bus 60 and the usual processing, and the memory 64 can be used to store data used by the processor 63 when performing operations.
  • An embodiment of the present disclosure also provides an AMF entity, including a memory, a processor, and a computer program stored on the memory and executable on the processor; wherein the processor is executable when the program is executed.
  • an embodiment of the present disclosure further provides an AMF entity, which includes a bus 71, a transceiver 72, an antenna 73, a bus interface 74, a processor 75, and a memory 76.
  • AMF entity which includes a bus 71, a transceiver 72, an antenna 73, a bus interface 74, a processor 75, and a memory 76.
  • the processor 75 is configured to read a program in the memory 76 and perform the following steps:
  • the control transceiver 72 receives the first notification message sent by the NF entity for invoking the first service of the AMF entity, and sends indication information indicating that the UE has entered the connection state to the NF entity, and sends the NF entity to send the indication information. And a second notification message for invoking the second service of the AMF entity, and sending downlink information to the UE.
  • the transceiver 72 is configured to receive and transmit data under the control of the processor 75.
  • the control transceiver 72 sends a paging message for paging the UE, and receives the A service request message sent by the UE.
  • the first service is an MT service.
  • the second service is a Namf_Communication service.
  • the first notification message carries indication information for indicating that the NF entity has downlink information to be sent.
  • the downlink information that the NF entity needs to send is downlink signaling, downlink data, or downlink short message, where the downlink signaling is signaling that the NF entity needs to send to the UE, or is used to trigger the AMF.
  • the entity sends downlink signaling to the signaling of the UE.
  • the second notification message carries the downlink signaling
  • the processor 75 reads the program in the memory 76, the following may also be performed.
  • the control transceiver 72 sends the downlink signaling to the UE, or the downlink signaling triggers downlink signaling sent by the AMF entity.
  • the second notification message carries a user plane establishment signaling for instructing the AMF to establish a user plane for downlink data
  • the processor 75 reads
  • the program in the memory 76 may further perform the steps of: establishing a user plane data channel between the NF entity and the UE, so that the NF entity sends the UE to the UE through the user plane data channel. Downstream data.
  • bus architecture (represented by bus 71), which may include any number of interconnected buses and bridges, will include one or more processors represented by processor 75 and memory represented by memory 76.
  • the various circuits are linked together.
  • the bus 71 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is well known in the art, and therefore, will not be further described herein.
  • Bus interface 74 provides an interface between bus 71 and transceiver 72.
  • Transceiver 72 can be an element or a plurality of elements, such as multiple receivers and transmitters, providing means for communicating with various other devices on a transmission medium.
  • Data processed by processor 75 is transmitted over wireless medium via antenna 73. Further, antenna 73 also receives the data and transmits the data to processor 75.
  • the processor 75 is responsible for managing the bus 71 and the usual processing, and can also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions.
  • the memory 76 can be used to store data used by the processor 75 when performing operations.
  • the processor 75 can be a CPU, an ASIC, an FPGA, or a CPLD.
  • Embodiments of the present disclosure also provide an NF entity, including a memory, a processor, and a computer program stored on the memory and executable on the processor; wherein the processor is executable when the program is executed.
  • an embodiment of the present disclosure further provides an NF entity, which includes a bus 81, a transceiver 82, an antenna 83, a bus interface 84, a processor 85, and a memory 86.
  • an NF entity which includes a bus 81, a transceiver 82, an antenna 83, a bus interface 84, a processor 85, and a memory 86.
  • the processor 85 is configured to read a program in the memory 86 and perform the following steps:
  • the control transceiver 82 sends a first notification message for invoking the first service of the AMF entity to the AMF entity, and receives indication information sent by the AMF entity to indicate that the UE has entered the connected state, and sends the indication information to the AMF entity. a second notification message for invoking a second service of the AMF entity.
  • the transceiver 82 is configured to receive and transmit data under the control of the processor 85.
  • the first service is an MT service.
  • the second service is a Namf_Communication service.
  • the first notification message carries indication information for indicating that the NF entity has downlink information to be sent.
  • the downlink information that the NF entity needs to send is downlink signaling, downlink data, or downlink short message, where the downlink signaling is signaling that the NF entity needs to send to the UE, or is used to trigger the AMF.
  • the entity sends downlink signaling to the signaling of the UE.
  • the second notification message carries the downlink signaling.
  • the second notification message carries a user plane establishment signaling for instructing the AMF to establish a user plane for downlink data.
  • bus architecture (represented by bus 81), which may include any number of interconnected buses and bridges, will include one or more processors represented by processor 85 and memory represented by memory 86.
  • the various circuits are linked together.
  • the bus 81 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is well known in the art and, therefore, will not be further described herein.
  • Bus interface 84 provides an interface between bus 81 and transceiver 82.
  • Transceiver 82 can be an element or a plurality of elements, such as a plurality of receivers and transmitters, providing means for communicating with various other devices on a transmission medium.
  • Data processed by processor 85 is transmitted over wireless medium via antenna 83. Further, antenna 83 also receives the data and transmits the data to processor 85.
  • the processor 85 is responsible for managing the bus 81 and the usual processing, and can also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions.
  • the memory 86 can be used to store data used by the processor 85 when performing operations.
  • the processor 85 can be a CPU, an ASIC, an FPGA, or a CPLD.
  • the embodiment of the present disclosure further provides a computer readable storage medium having stored thereon a computer program, wherein when the program is executed by the processor, the step of transmitting the downlink information applied to the AMF entity may be implemented, or The steps in the sending of the downlink information applied to the NF entity, and the same technical effects can be achieved. To avoid repetition, details are not described herein again.
  • the program may be implemented by the processor to implement the following steps:
  • the second notification message of the second service of the AMF entity sends downlink information to the UE.
  • the following step may be further implemented: sending a paging message for paging the UE, and receiving a service request message sent by the UE.
  • the first service is an MT service.
  • the second service is a Namf_Communication service.
  • the first notification message carries indication information used to indicate that the NF entity has downlink information to be sent.
  • the downlink information that the NF entity needs to send is downlink signaling, downlink data, or downlink short message, where the downlink signaling is signaling that the NF entity needs to send to the UE, or is used to trigger the The AMF entity sends downlink signaling to the signaling of the UE.
  • the second notification message carries the downlink signaling
  • the program when executed by the processor, the following steps may be implemented:
  • the UE sends the downlink signaling, or the downlink signaling triggers downlink signaling sent by the AMF entity.
  • the second notification message carries a user plane establishing signaling for instructing the AMF to establish a user plane for the downlink data, where the procedure is
  • the processor may further implement the following steps: establishing a user plane data channel between the NF entity and the UE, so that the NF entity sends the downlink data to the UE by using the user plane data channel.
  • the program may be implemented by the processor to implement the following steps:
  • the first service is an MT service.
  • the second service is a Namf_Communication service.
  • the first notification message carries indication information used to indicate that the NF entity has downlink information to be sent.
  • the downlink information that the NF entity needs to send is downlink signaling, downlink data, or downlink short message, where the downlink signaling is signaling that the NF entity needs to send to the UE, or is used to trigger the The AMF entity sends downlink signaling to the signaling of the UE.
  • the second notification message carries the downlink signaling.
  • the second notification message carries a user plane establishment signaling for instructing the AMF to establish a user plane for the downlink data.
  • Computer readable media includes both permanent and non-persistent, removable and non-removable media, and information storage can be implemented by any method or technology.
  • the information can be computer readable instructions, data structures, modules of programs, or other data.
  • Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read only memory. (ROM), electrically erasable programmable read only memory (EEPROM), flash memory or other memory technology, compact disk read only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, Magnetic tape cartridges, magnetic tape storage or other magnetic storage devices or any other non-transportable media can be used to store information that can be accessed by a computing device.
  • computer readable media does not include temporary storage of computer readable media, such as modulated data signals and carrier waves.
  • the foregoing embodiment method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is better.
  • Implementation Based on such understanding, the technical solution of the present disclosure, which is essential or contributes to the related art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, CD-ROM).
  • the instructions include a number of instructions for causing a terminal device (which may be a cell phone, computer, server, air conditioner, or network device, etc.) to perform the methods described in various embodiments of the present disclosure.

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Abstract

本公开提供一种下行信息的发送方法、AMF实体及NF实体，其中.所述下行信息的发送方法包括：AMF实体接收NF实体发送的用于调用AMF实体的第一服务的第一通知消息，AMF实体向所述NF实体发送用于指示UE已经进入连接态的指示信息，AMF实体接收所述NF实体发送的用于调用所述AMF实体的第二服务的第二通知消息，AMF实体向所述UE发送下行信息。

Description

下行信息的发送方法、接入及移动性管理功能实体及网络功能实体
相关申请的交叉引用
本申请主张在2017年8月1日在中国提交的中国专利申请No.201710646942.0的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域，尤其涉及一种下行信息的发送方法、AMF实体及NF实体。
背景技术
相对于第四代移动通信技术(4G，4th-Generation)网络而言，第五代移动通信技术(5G，5th-Generation)网络重新定义了一种网络架构，核心网采用服务化架构，各个网络功能(NF，Network Function)实体之间采用服务化接口(SBI)。
当前，基于服务的5G核心网架构中，接入及移动性管理功能(AMF，Access and Mobility Management Function)实体仅提供两种服务：Namf_Communication服务和Namf_EventExposure服务。Namf_Communication服务主要用于：其他NF实体利用该服务，通过N2、N1接口和终端(UE，User Equipment)、无线接入网(RAN，Radio Access Network)交互，完成分组数据单元(PDU，packet data unit)会话管理和短信收发；相邻AMF实体利用该服务，实现用户上下文的转移等。Namf_EventExposure服务主要用于：其他NF实体利用该服务订阅或取消订阅AMF实体的状态、位置等信息；AMF实体利用该服务向其他NF实体上报AMF实体的状态、位置等信息。其他NF实体例如为统一数据库(UDM，Unified Data Management)、策略控制功能(PCF，Policy Control Function)、会话管理功能(SMF，Session Management Function)、能力开放功能(NEF，Network Exposure Function)等实体。
其中，Namf_Communication服务可用于下行信息的发送。当网络例如UDM实体有下行信令需要发送给UE时，信令流程一般为：首先，UDM实 体通过调用AMF实体的Namf_Communication服务，将下发的下行信令发送至AMF实体；然后，可选的在UE可能处于空闲态时，AMF实体寻呼UE，而UE收到寻呼后，建立无线资源控制(RRC，Radio Resource Control)连接以进入连接态，并发送服务请求消息至AMF实体；最后，AMF实体向UE发送下行信令。当网络例如SMF实体有下行数据需要发送给UE时，信令流程一般为：首先，SMF实体通过调用AMF实体的Namf_Communication服务，向AMF实体发送用于指示SMF实体有下行数据需要发送的指示信息；然后，可选的在UE可能处于空闲态时，AMF实体寻呼UE，而UE收到寻呼后，建立RRC连接以进入连接态，并发送服务请求消息至AMF实体；最后，AMF实体发起建立用户面承载的流程，为用户建立数据面通道。
发明内容
本公开实施例的目的在于提供一种下行信息的发送方法、AMF实体及NF实体，以充分利用AMF实体的服务。
第一方面，本公开实施例提供了一种下行信息的发送方法，包括：
AMF实体接收NF实体发送的用于调用AMF实体的第一服务的第一通知消息；
所述AMF向所述NF实体发送用于指示UE已经进入连接态的指示信息；
所述AMF接收所述NF实体发送的用于调用所述AMF实体的第二服务的第二通知消息；
所述AMF向所述UE发送下行信息。
第二方面，本公开实施例提供了一种下行信息的发送方法，包括：
NF实体向AMF实体发送用于调用所述AMF实体的第一服务的第一通知消息；
所述NF实体接收所述AMF实体发送的用于指示UE已经进入连接态的指示信息；
所述NF实体向所述AMF实体发送用于调用所述AMF实体的第二服务的第二通知消息。
第三方面，本公开实施例提供了一种AMF实体，包括发送器和接收器；
所述接收器用于接收NF实体发送的用于调用所述AMF实体的第一服务的第一通知消息；
所述发送器用于向所述NF实体发送用于指示UE已经进入连接态的指示信息；
所述接收器还用于接收所述NF实体发送的用于调用所述AMF实体的第二服务的第二通知消息；
所述发送器还用于向所述UE发送下行信息。
第四方面，本公开实施例提供了一种NF实体，包括发送器和接收器；
所述发送器用于向AMF实体发送用于调用所述AMF实体的第一服务的第一通知消息；
所述接收器用于接收所述AMF实体发送的用于指示UE已经进入连接态的指示信息；
所述发送器还用于向所述AMF实体发送用于调用所述AMF实体的第二服务的第二通知消息。
第五方面，本公开实施例提供了一种AMF实体，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序；所述处理器执行所述程序时实现上述应用于AMF实体的下行信息的发送方法。
第六方面，本公开实施例提供了一种NF实体，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序；所述处理器执行所述程序时实现上述应用于NF实体的下行信息的发送方法。
第七方面，本公开实施例提供了一种计算机可读存储介质，其上存储有计算机程序，所述程序被处理器执行时实现上述应用于AMF实体的下行信息的发送方法中的步骤。
第八方面，本公开实施例提供了一种计算机可读存储介质，其上存储有计算机程序，所述程序被处理器执行时实现上述应用于NF实体的下行信息的发送方法中的步骤。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对本公开实施例中 所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1表示本公开实施例的一下行信息的发送方法的流程图；
图2表示本公开具体实例一的UDM实体发送下行信令的流程图；
图3表示本公开具体实例二的SMF实体发送下行数据的流程图；
图4表示本公开实施例的另一下行信息的发送方法的流程图；
图5表示本公开实施例的一AMF实体的结构示意图；
图6表示本公开实施例的一NF实体的结构示意图；
图7表示本公开实施例的另一AMF实体的结构示意图；
图8表示本公开实施例的另一NF实体的结构示意图。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
在相关技术中，AMF实体提供的Namf_Communication服务的功能过于庞大，不方便灵活的独立缩扩容，也不能灵活的组合，使得服务化的优势没有充分的发挥出来，造成现有的下行信息的发送方法不能充分利用AMF实体的服务。
在本公开具体实施例中，相比于相关技术，AMF实体新增了一种独立的服务，该新增的服务具体可为移动台被呼(MT，Mobile Terminated)服务，或者Namf_MobileTermination EnableUEReachability服务，用于NF实体(即除AMF实体外的其他NF实体)在有下行信息需要发送时调用。具体的，NF实体在有下行信息需要发送时，可首先通过调用AMF实体的新增服务，确保UE进入连接态，然后通过调用AMF实体的Namf_Communication服务，将下行信息发送至UE。这样，可使得AMF实体的服务更多，更容易缩扩容，更容易组合，下行信息的发送过程充分利用AMF实体的服务。
参见图1所示，本公开实施例提供了一种下行信息的发送方法，应用于AMF实体，包括：
步骤101：AMF实体接收NF实体发送的用于调用所述AMF实体的第一服务的第一通知消息；
步骤102：AMF实体向所述NF实体发送用于指示UE已经进入连接态的指示信息；
步骤103：AMF实体接收所述NF实体发送的用于调用所述AMF实体的第二服务的第二通知消息；
步骤104：AMF实体向所述UE发送下行信息。
本公开实施例的下行信息的发送方法，通过接收NF实体发送的用于调用AMF实体的第一服务的第一通知消息，向NF实体发送用于指示UE已经进入连接态的指示信息，接收NF实体发送的用于调用AMF实体的第二服务的第二通知消息，向UE发送下行信息，从而能够在NF实体有下行信息需要发送时，先调用AMF实体的第一服务，确保UE进入连接态，再调用AMF实体的第二服务，进行下行信息的发送，从而充分利用AMF实体的服务。
在本公开具体实施例中，步骤101中的NF实体具体为网络中除AMF实体外的其他NF实体，例如为UDM实体、PCF实体、SMF实体、NEF实体等。
可选的，在AMF实体接收到第一通知消息后，若UE可能处于空闲态，为了确保UE进入连接态，AMF实体可发起寻呼，直至寻呼到UE，而UE建立RRC连接以进入连接态。因此当UE处于空闲态时，步骤101之后且步骤102之前，本公开实施例的方法还可包括：
发送用于寻呼UE的寻呼消息；
接收UE发送的服务请求消息。
这样，在接收到UE发送的服务请求消息后，AMF实体可确定UE已经进入连接态。
需指出的是，在步骤101之后，当UE处于连接态时，AMF实体可直接执行步骤102。
在本公开具体实施例中，第一服务为AMF实体的相比于相关技术的新增 服务，主要执行可选的UE寻呼。具体的，第一服务可为MT服务，或者Namf_MobileTermination EnableUEReachability服务等。实际应用中，第一通知消息可为MT服务通知消息。由于AMF实体的寻呼功能相对独立，且不涉及对终端上下文的修改，寻呼信令在全网信令中占一个很大的比例，且只有部分终端需要使用AMF实体的寻呼服务，例如MICO类终端不需要AMF实体的寻呼服务，寻呼信令的多寡和运营商网络的不同部署位置、不同使用时间、不同客户类型强相关，因此在AMF实体中新增MT服务，可满足AMF实体较强的独立缩扩容的需求。
对应的，第二服务可为Namf_Communication服务，主要服务于下行信息的发送。
在本公开具体实施例中，第一通知消息中可携带有用于指示NF实体有下行信息需要发送的指示信息。NF实体需要发送的下行信息可以为下行信令，也可以为下行数据，也可以为下行短信。进一步的，该下行信令可以为NF实体需要发送给UE的信令，也可以为用于触发AMF实体发送下行信令给UE的信令。例如，若UDM实体发送信令A到AMF实体，信令A用于触发AMF实体发送信令B给UE，则AMF实体发送信令B给UE。
其中，当NF实体需要发送的下行信息为下行信令时，第二通知消息中可携带有所述下行信令。对应的，上述步骤104具体为：
AMF实体向UE发送所述下行信令，或者所述下行信令触发所述AMF实体发送的下行信令。
其中，当NF实体需要发送的下行信息为下行数据时，第二通知消息中可携带有用于指示AMF为下行数据建立用户面的用户面建立信令。对应的，上述步骤104可具体为：
AMF实体建立所述NF实体和所述UE之间的用户面数据通道，以使所述NF实体通过所述用户面数据通道向所述UE发送所述下行数据。
下面，结合图2和图3，分别以UDM实体和SMF实体为例对本公开具体实例一和实例二的下行信息的发送过程进行说明。
实例一中，UDM实体有下行信令需要发送且UE可能处于空闲态。UDM实体需要发送的下行信令可以是需要发送给UE的信令，也可以是用于触发 AMF实体发送下行信令给UE的信令。请参见图2，实例一的下行信息的发送过程具体为：
步骤21：UDM实体向AMF实体发送用于调用AMF实体的MT服务的MT服务通知消息，并指示UDM实体有下行信息需要发送；
步骤22：AMF实体发送用于寻呼UE的寻呼消息；
步骤23：UE接收到寻呼消息后，建立RRC连接以进入连接态，并发送服务请求消息至AMF实体；
步骤24：AMF实体向UDM实体发送MT服务反馈消息，该MT服务反馈消息中携带有用于指示UE已经进入连接态的指示信息；
步骤25：UDM实体向AMF实体发送需要发送的下行信令，并调用AMF实体的Namf_Communication服务；
步骤26：AMF实体向UE发送下行信令，该下行信令可以为AMF实体接收的信令，也可以为AMF实体被触发发送的下行信令。
实例二中，SMF实体有下行数据需要发送且UE可能处于空闲态。请参见图3，实例二的下行信息的发送过程具体为：
步骤31：SMF实体向AMF实体发送用于调用AMF实体的MT服务的MT服务通知消息，并指示UDM实体有下行信息需要发送；
步骤32：AMF实体发送用于寻呼UE的寻呼消息；
步骤33：UE接收到寻呼消息后，建立RRC连接以进入连接态，并发送服务请求消息至AMF实体；
步骤34：AMF实体向SMF实体发送MT服务反馈消息，该MT服务反馈消息中携带有用于指示UE已经进入连接态的指示信息；
步骤35：SMF实体向AMF实体发送用于调用AMF实体的Namf_Communication服务的下行数据通知消息，该下行数据通知消息中携带有用于指示SMF实体为下行数据建立用户面的用户面建立信令；
步骤36：AMF实体发起建立用户面承载的流程，建立SMF实体和UE之间的用户面数据通道，以使SMF实体通过所述用户面数据通道向UE发送下行数据。
上述实施例对AMF实体侧的下行信息的发送方法进行了说明，下面将结 合实施例和附图对NF实体侧的下行信息的发送方法进行说明。
参见图4所示，本公开实施例还提供了一种下行信息的发送方法，应用于NF实体，包括：
步骤401：NF实体向AMF实体发送用于调用所述AMF实体的第一服务的第一通知消息；
步骤402：NF实体接收所述AMF实体发送的用于指示UE已经进入连接态的指示信息；
步骤403：NF实体向所述AMF实体发送用于调用所述AMF实体的第二服务的第二通知消息。
本公开实施例的下行信息的发送方法，通过向AMF实体发送用于调用AMF实体的第一服务的第一通知消息，接收AMF实体发送的用于指示UE已经进入连接态的指示信息，向AMF实体发送用于调用AMF实体的第二服务的第二通知消息，从而能够在NF实体有下行信息需要发送时，先调用AMF实体的第一服务，确保UE进入连接态，再调用AMF实体的第二服务，进行下行信息的发送，从而充分利用AMF实体的服务。
具体的，所述第一服务为MT服务。
具体的，所述第二服务为Namf_Communication服务。
在本公开具体实施例中，所述第一通知消息中携带有用于指示所述NF实体有下行信息需要发送的指示信息。
进一步的，所述NF实体需要发送的下行信息为下行信令、下行数据或者下行短信，所述下行信令为所述NF实体需要发送给所述UE的信令，或者用于触发所述AMF实体发送下行信令给所述UE的信令。
在本公开具体实施例中，当所述NF实体需要发送的下行信息为下行信令时，所述第二通知消息中携带有所述下行信令。
在本公开具体实施例中，当所述NF实体需要发送的下行信息为下行数据时，所述第二通知消息中携带有用于指示所述AMF为下行数据建立用户面的用户面建立信令。
上述实施例对本公开的下行信息的发送方法进行了说明，下面将结合实施例和附图对本公开的AMF实体和NF实体进行说明。
请参见图5，表示本公开实施例的AMF实体的结构示意图。如图5所示，AMF实体包括处理器51、发送器52和接收器53。
其中，所述接收器53用于接收NF实体发送的用于调用所述AMF实体的第一服务的第一通知消息；
所述发送器52用于向所述NF实体发送用于指示UE已经进入连接态的指示信息；
所述接收器53还用于接收所述NF实体发送的用于调用所述AMF实体的第二服务的第二通知消息；
所述发送器52还用于向所述UE发送下行信息。
可选的，当所述UE处于空闲态时，所述发送器52还用于发送用于寻呼所述UE的寻呼消息；
所述接收器53还用于接收所述UE发送的服务请求消息。
可选的，所述第一服务为MT服务。
可选的，所述第二服务为Namf_Communication服务。
可选的，所述第一通知消息中携带有用于指示所述NF实体有下行信息需要发送的指示信息。
可选的，所述NF实体需要发送的下行信息为下行信令、下行数据或者下行短信，所述下行信令为所述NF实体需要发送给所述UE的信令，或者用于触发所述AMF实体发送下行信令给所述UE的信令。
可选的，当所述NF实体需要发送的下行信息为下行信令时，所述第二通知消息中携带有所述下行信令；所述发送器52还用于：向所述UE发送所述下行信令，或者所述下行信令触发所述AMF实体发送的下行信令。
可选的，当所述NF实体需要发送的下行信息为下行数据时，所述第二通知消息中携带有用于指示所述AMF为下行数据建立用户面的用户面建立信令；
所述AMF实体还包括处理器，所述处理器51用于：建立所述NF实体和所述UE之间的用户面数据通道，以使所述NF实体通过所述用户面数据通道向所述UE发送所述下行数据。
在图5中，总线架构(用总线50来代表)，总线50可以包括任意数量的互联 的总线和桥，总线50将包括由处理器51代表的一个或多个处理器和存储器54代表的存储器的各种电路连接在一起。总线50还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路连接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口55在总线50、发送器52和接收器53之间提供接口。发送器52和接收器53可以是一个收发机，提供用于在传输介质上与各种其他装置通信的单元。
处理器51负责管理总线50和通常的处理，而存储器54可以被用于存储处理器51在执行操作时所使用的数据。
请参见图6，表示本公开实施例的NF实体的结构示意图。如图6所示，基站包括发送器61和接收器62。
其中，所述发送器61用于向AMF实体发送用于调用所述AMF实体的第一服务的第一通知消息；
所述接收器62用于接收所述AMF实体发送的用于指示UE已经进入连接态的指示信息；
所述发送器61还用于向所述AMF实体发送用于调用所述AMF实体的第二服务的第二通知消息。
可选的，所述第一服务为MT服务。
可选的，所述第二服务为Namf_Communication服务。
可选的，所述第一通知消息中携带有用于指示所述NF实体有下行信息需要发送的指示信息。
可选的，所述NF实体需要发送的下行信息为下行信令、下行数据或者下行短信，所述下行信令为所述NF实体需要发送给所述UE的信令，或者用于触发所述AMF实体发送下行信令给所述UE的信令。
可选的，当所述NF实体需要发送的下行信息为下行信令时，所述第二通知消息中携带有所述下行信令。
可选的，当所述NF实体需要发送的下行信息为下行数据时，所述第二通知消息中携带有用于指示所述AMF为下行数据建立用户面的用户面建立信令。
在图6中，总线架构(用总线60来代表)，总线60可以包括任意数量的互联 的总线和桥，总线60将包括由处理器63代表的一个或多个处理器和存储器64代表的存储器的各种电路连接在一起。总线60还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路连接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口65在总线60、发送器61和接收器62之间提供接口。发送器61和接收器62可以是一个收发机，提供用于在传输介质上与各种其他装置通信的单元。
处理器63负责管理总线60和通常的处理，而存储器64可以被用于存储处理器63在执行操作时所使用的数据。
本公开实施例还提供了一种AMF实体，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序；其中，所述处理器执行所述程序时可实现上述应用于AMF实体的下行信息的发送方法，且能达到相同的技术效果，为避免重复，这里不再赘述。
具体的，参见图7所示，本公开实施例还提供一种AMF实体，AMF实体70包括总线71、收发机72、天线73、总线接口74、处理器75和存储器76。
其中，处理器75，用于读取存储器76中的程序，执行以下步骤：
控制收发机72接收NF实体发送的用于调用所述AMF实体的第一服务的第一通知消息，向所述NF实体发送用于指示UE已经进入连接态的指示信息，接收所述NF实体发送的用于调用所述AMF实体的第二服务的第二通知消息，向所述UE发送下行信息。
收发机72，用于在处理器75的控制下接收和发送数据。
具体的，当所述UE处于空闲态时，处理器75读取存储器76中的程序时，还可执行以下步骤：控制收发机72发送用于寻呼所述UE的寻呼消息，接收所述UE发送的服务请求消息。
具体的，所述第一服务为MT服务。
具体的，所述第二服务为Namf_Communication服务。
具体的，所述第一通知消息中携带有用于指示所述NF实体有下行信息需要发送的指示信息。
具体的，所述NF实体需要发送的下行信息为下行信令、下行数据或者 下行短信，所述下行信令为所述NF实体需要发送给所述UE的信令，或者用于触发所述AMF实体发送下行信令给所述UE的信令。
具体的，当所述NF实体需要发送的下行信息为下行信令时，所述第二通知消息中携带有所述下行信令，处理器75读取存储器76中的程序时，还可执行以下步骤：控制收发机72向所述UE发送所述下行信令，或者所述下行信令触发所述AMF实体发送的下行信令。
具体的，当所述NF实体需要发送的下行信息为下行数据时，所述第二通知消息中携带有用于指示所述AMF为下行数据建立用户面的用户面建立信令，处理器75读取存储器76中的程序时，还可执行以下步骤：建立所述NF实体和所述UE之间的用户面数据通道，以使所述NF实体通过所述用户面数据通道向所述UE发送所述下行数据。
在图7中，总线架构(用总线71来代表)，总线71可以包括任意数量的互联的总线和桥，总线71将包括由处理器75代表的一个或多个处理器和存储器76代表的存储器的各种电路链接在一起。总线71还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口74在总线71和收发机72之间提供接口。收发机72可以是一个元件，也可以是多个元件，比如多个接收器和发送器，提供用于在传输介质上与各种其他装置通信的单元。经处理器75处理的数据通过天线73在无线介质上进行传输，进一步，天线73还接收数据并将数据传送给处理器75。
处理器75负责管理总线71和通常的处理，还可以提供各种功能，包括定时，外围接口，电压调节、电源管理以及其他控制功能。而存储器76可以被用于存储处理器75在执行操作时所使用的数据。
可选的，处理器75可以是CPU、ASIC、FPGA或CPLD。
本公开实施例还提供了一种NF实体，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序；其中，所述处理器执行所述程序时可实现上述应用于NF实体的下行信息的发送方法，且能达到相同的技术效果，为避免重复，这里不再赘述。
具体的，参见图8所示，本公开实施例还提供一种NF实体，NF实体80 包括总线81、收发机82、天线83、总线接口84、处理器85和存储器86。
其中，处理器85，用于读取存储器86中的程序，执行以下步骤：
控制收发机82向AMF实体发送用于调用所述AMF实体的第一服务的第一通知消息，接收所述AMF实体发送的用于指示UE已经进入连接态的指示信息，向所述AMF实体发送用于调用所述AMF实体的第二服务的第二通知消息。
收发机82，用于在处理器85的控制下接收和发送数据。
具体的，所述第一服务为MT服务。
具体的，所述第二服务为Namf_Communication服务。
具体的，所述第一通知消息中携带有用于指示所述NF实体有下行信息需要发送的指示信息。
具体的，所述NF实体需要发送的下行信息为下行信令、下行数据或者下行短信，所述下行信令为所述NF实体需要发送给所述UE的信令，或者用于触发所述AMF实体发送下行信令给所述UE的信令。
具体的，当所述NF实体需要发送的下行信息为下行信令时，所述第二通知消息中携带有所述下行信令。
具体的，当所述NF实体需要发送的下行信息为下行数据时，所述第二通知消息中携带有用于指示所述AMF为下行数据建立用户面的用户面建立信令。
在图8中，总线架构(用总线81来代表)，总线81可以包括任意数量的互联的总线和桥，总线81将包括由处理器85代表的一个或多个处理器和存储器86代表的存储器的各种电路链接在一起。总线81还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口84在总线81和收发机82之间提供接口。收发机82可以是一个元件，也可以是多个元件，比如多个接收器和发送器，提供用于在传输介质上与各种其他装置通信的单元。经处理器85处理的数据通过天线83在无线介质上进行传输，进一步，天线83还接收数据并将数据传送给处理器85。
处理器85负责管理总线81和通常的处理，还可以提供各种功能，包括 定时，外围接口，电压调节、电源管理以及其他控制功能。而存储器86可以被用于存储处理器85在执行操作时所使用的数据。
可选的，处理器85可以是CPU、ASIC、FPGA或CPLD。
本公开实施例还提供了一种计算机可读存储介质，其上存储有计算机程序，其中，所述程序被处理器执行时可实现上述应用于AMF实体的下行信息的发送中的步骤，或者上述应用于NF实体的下行信息的发送中的步骤，且能达到相同的技术效果，为避免重复，这里不再赘述。
具体的，当计算机可读存储介质应用于AMF实体时，所述程序被处理器执行时可实现以下步骤：
接收NF实体发送的用于调用所述AMF实体的第一服务的第一通知消息，向所述NF实体发送用于指示UE已经进入连接态的指示信息，接收所述NF实体发送的用于调用所述AMF实体的第二服务的第二通知消息，向所述UE发送下行信息。
可选地，当所述UE处于空闲态时，所述程序被处理器执行时还可实现以下步骤：发送用于寻呼所述UE的寻呼消息，接收所述UE发送的服务请求消息。
可选地，所述第一服务为MT服务。
可选地，所述第二服务为Namf_Communication服务。
可选地，所述第一通知消息中携带有用于指示所述NF实体有下行信息需要发送的指示信息。
可选地，所述NF实体需要发送的下行信息为下行信令、下行数据或者下行短信，所述下行信令为所述NF实体需要发送给所述UE的信令，或者用于触发所述AMF实体发送下行信令给所述UE的信令。
可选地，当所述NF实体需要发送的下行信息为下行信令时，所述第二通知消息中携带有所述下行信令，所述程序被处理器执行时还可实现以下步骤：向所述UE发送所述下行信令，或者所述下行信令触发所述AMF实体发送的下行信令。
可选地，当所述NF实体需要发送的下行信息为下行数据时，所述第二通知消息中携带有用于指示所述AMF为下行数据建立用户面的用户面建立 信令，所述程序被处理器执行时还可实现以下步骤：建立所述NF实体和所述UE之间的用户面数据通道，以使所述NF实体通过所述用户面数据通道向所述UE发送所述下行数据。
具体的，当计算机可读存储介质应用于NF实体时，所述程序被处理器执行时可实现以下步骤：
向AMF实体发送用于调用所述AMF实体的第一服务的第一通知消息，接收所述AMF实体发送的用于指示UE已经进入连接态的指示信息，向所述AMF实体发送用于调用所述AMF实体的第二服务的第二通知消息。
可选地，所述第一服务为MT服务。
可选地，所述第二服务为Namf_Communication服务。
可选地，所述第一通知消息中携带有用于指示所述NF实体有下行信息需要发送的指示信息。
可选地，所述NF实体需要发送的下行信息为下行信令、下行数据或者下行短信，所述下行信令为所述NF实体需要发送给所述UE的信令，或者用于触发所述AMF实体发送下行信令给所述UE的信令。
可选地，当所述NF实体需要发送的下行信息为下行信令时，所述第二通知消息中携带有所述下行信令。
可选地，当所述NF实体需要发送的下行信息为下行数据时，所述第二通知消息中携带有用于指示所述AMF为下行数据建立用户面的用户面建立信令。
计算机可读介质包括永久性和非永久性、可移动和非可移动媒体,可以由任何方法或技术来实现信息存储。信息可以是计算机可读指令、数据结构、程序的模块或其他数据。计算机的存储介质的例子包括，但不限于相变内存(PRAM)、静态随机存取存储器(SRAM)、动态随机存取存储器(DRAM)、其他类型的随机存取存储器(RAM)、只读存储器(ROM)、电可擦除可编程只读存储器(EEPROM)、快闪记忆体或其他内存技术、只读光盘只读存储器(CD-ROM)、数字多功能光盘(DVD)或其他光学存储、磁盒式磁带，磁带磁磁盘存储或其他磁性存储设备或任何其他非传输介质，可用于存储可以被计算设备访问的信息。按照本文中的界定，计算机可读介质不包括暂存电脑可 读媒体(transitory media)，如调制的数据信号和载波。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
上述本公开实施例序号仅仅为了描述，不代表实施例的优劣。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本公开的技术方案本质上或者说对相关技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本公开各个实施例所述的方法。
以上所述仅是本公开的可选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本公开原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本公开的保护范围。

Claims (35)

  1. 一种下行信息的发送方法，包括：
    接入及移动性管理功能AMF实体接收网络功能NF实体发送的用于调用所述AMF实体的第一服务的第一通知消息；
    所述AMF实体向所述NF实体发送用于指示终端UE已经进入连接态的指示信息；
    所述AMF实体接收所述NF实体发送的用于调用所述AMF实体的第二服务的第二通知消息；
    所述AMF实体向所述UE发送下行信息。
  2. 根据权利要求1所述的发送方法，在所述AMF实体接收NF实体发送的用于调用所述AMF实体的第一服务的第一通知消息之后，当所述UE处于空闲态时，在所述AMF向所述NF实体发送用于指示UE已经进入连接态的指示信息之前，还包括：
    发送用于寻呼所述UE的寻呼消息；
    接收所述UE发送的服务请求消息。
  3. 根据权利要求1所述的发送方法，其中，在所述AMF实体接收NF实体发送的用于调用所述AMF实体的第一服务的第一通知消息之后，当所述UE处于连接态时，所述AMF向所述NF实体发送用于指示UE已经进入连接态的指示信息。
  4. 根据权利要求1所述的发送方法，其中，所述第一服务为移动台被呼MT服务。
  5. 根据权利要求1所述的发送方法，其中，所述第二服务为Namf_Communication服务。
  6. 根据权利要求1所述的发送方法，其中，所述第一通知消息中携带有用于指示所述NF实体有下行信息需要发送的指示信息。
  7. 根据权利要求6所述的发送方法，其中，所述NF实体需要发送的下行信息为下行信令、下行数据或者下行短信，所述下行信令为所述NF实体需要发送给所述UE的信令，或者用于触发所述AMF实体发送下行信令给所 述UE的信令。
  8. 根据权利要求7所述的发送方法，其中，当所述NF实体需要发送的下行信息为下行信令时，所述第二通知消息中携带有所述下行信令；
    所述AMF实体向所述UE发送下行信息，包括：
    所述AMF实体向所述UE发送所述下行信令，或者所述下行信令触发所述AMF实体发送的下行信令。
  9. 根据权利要求7所述的发送方法，其中，当所述NF实体需要发送的下行信息为下行数据时，所述第二通知消息中携带有用于指示所述AMF为下行数据建立用户面的用户面建立信令；
    所述AMF实体向所述UE发送下行信息，包括：
    所述AMF实体建立所述NF实体和所述UE之间的用户面数据通道，以使所述NF实体通过所述用户面数据通道向所述UE发送所述下行数据。
  10. 一种下行信息的发送方法，包括：
    NF实体向AMF实体发送用于调用所述AMF实体的第一服务的第一通知消息；
    所述NF实体接收所述AMF实体发送的用于指示UE已经进入连接态的指示信息；
    所述NF实体向所述AMF实体发送用于调用所述AMF实体的第二服务的第二通知消息。
  11. 根据权利要求10所述的发送方法，其中，所述第一服务为MT服务。
  12. 根据权利要求10所述的发送方法，其中，所述第二服务为Namf_Communication服务。
  13. 根据权利要求10所述的发送方法，其中，所述第一通知消息中携带有用于指示所述NF实体有下行信息需要发送的指示信息。
  14. 根据权利要求13所述的发送方法，其中，所述NF实体需要发送的下行信息为下行信令、下行数据或者下行短信，所述下行信令为所述NF实体需要发送给所述UE的信令，或者用于触发所述AMF实体发送下行信令给所述UE的信令。
  15. 根据权利要求14所述的发送方法，其中，当所述NF实体需要发送 的下行信息为下行信令时，所述第二通知消息中携带有所述下行信令。
  16. 根据权利要求14所述的发送方法，其中，当所述NF实体需要发送的下行信息为下行数据时，所述第二通知消息中携带有用于指示所述AMF为下行数据建立用户面的用户面建立信令。
  17. 一种AMF实体，包括发送器和接收器；
    所述接收器用于接收NF实体发送的用于调用所述AMF实体的第一服务的第一通知消息；
    所述发送器用于向所述NF实体发送用于指示UE已经进入连接态的指示信息；
    所述接收器还用于接收所述NF实体发送的用于调用所述AMF实体的第二服务的第二通知消息；
    所述发送器还用于向所述UE发送下行信息。
  18. 根据权利要求17所述的AMF实体，其中，当所述UE处于空闲态时，所述发送器还用于发送用于寻呼所述UE的寻呼消息；
    所述接收器还用于接收所述UE发送的服务请求消息。
  19. 根据权利要求17所述的AMF实体，其中，所述第一服务为MT服务。
  20. 根据权利要求17所述的AMF实体，其中，所述第二服务为Namf_Communication服务。
  21. 根据权利要求17所述的AMF实体，其中，所述第一通知消息中携带有用于指示所述NF实体有下行信息需要发送的指示信息。
  22. 根据权利要求21所述的AMF实体，其中，所述NF实体需要发送的下行信息为下行信令、下行数据或者下行短信，所述下行信令为所述NF实体需要发送给所述UE的信令，或者用于触发所述AMF实体发送下行信令给所述UE的信令。
  23. 根据权利要求22所述的AMF实体，其中，当所述NF实体需要发送的下行信息为下行信令时，所述第二通知消息中携带有所述下行信令；
    所述发送器还用于：向所述UE发送所述下行信令，或者所述下行信令触发所述AMF实体发送的下行信令。
  24. 根据权利要求22所述的AMF实体，其中，当所述NF实体需要发送的下行信息为下行数据时，所述第二通知消息中携带有用于指示所述AMF为下行数据建立用户面的用户面建立信令；
    所述AMF实体还包括处理器；
    所述处理器用于：建立所述NF实体和所述UE之间的用户面数据通道，以使所述NF实体通过所述用户面数据通道向所述UE发送所述下行数据。
  25. 一种NF实体，包括发送器和接收器；
    所述发送器用于向AMF实体发送用于调用所述AMF实体的第一服务的第一通知消息；
    所述接收器用于接收所述AMF实体发送的用于指示UE已经进入连接态的指示信息；
    所述发送器还用于向所述AMF实体发送用于调用所述AMF实体的第二服务的第二通知消息。
  26. 根据权利要求25所述的NF实体，其中，所述第一服务为MT服务。
  27. 根据权利要求25所述的NF实体，其中，所述第二服务为Namf_Communication服务。
  28. 根据权利要求25所述的NF实体，其中，所述第一通知消息中携带有用于指示所述NF实体有下行信息需要发送的指示信息。
  29. 根据权利要求28所述的NF实体，其中，所述NF实体需要发送的下行信息为下行信令、下行数据或者下行短信，所述下行信令为所述NF实体需要发送给所述UE的信令，或者用于触发所述AMF实体发送下行信令给所述UE的信令。
  30. 根据权利要求29所述的NF实体，其中，当所述NF实体需要发送的下行信息为下行信令时，所述第二通知消息中携带有所述下行信令。
  31. 根据权利要求29所述的NF实体，其中，当所述NF实体需要发送的下行信息为下行数据时，所述第二通知消息中携带有用于指示所述AMF为下行数据建立用户面的用户面建立信令。
  32. 一种AMF实体，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序；其中，所述处理器执行所述程序时实现如 权利要求1至9中任一项所述的下行信息的发送方法。
  33. 一种NF实体，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序；其中，所述处理器执行所述程序时实现如权利要求10至16中任一项所述的下行信息的发送方法。
  34. 一种计算机可读存储介质，其上存储有计算机程序，其中，所述程序被处理器执行时实现如权利要求1至9中任一项所述的下行信息的发送方法中的步骤。
  35. 一种计算机可读存储介质，其上存储有计算机程序，其中，所述程序被处理器执行时实现如权利要求10至16中任一项所述的下行信息的发送方法中的步骤。
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