WO2019020117A1 - 一种激活session的方法、设备及系统 - Google Patents

一种激活session的方法、设备及系统 Download PDF

Info

Publication number
WO2019020117A1
WO2019020117A1 PCT/CN2018/097669 CN2018097669W WO2019020117A1 WO 2019020117 A1 WO2019020117 A1 WO 2019020117A1 CN 2018097669 W CN2018097669 W CN 2018097669W WO 2019020117 A1 WO2019020117 A1 WO 2019020117A1
Authority
WO
WIPO (PCT)
Prior art keywords
pdu session
terminal device
node
activated
activation
Prior art date
Application number
PCT/CN2018/097669
Other languages
English (en)
French (fr)
Inventor
应江威
杨艳梅
邓强
李濛
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP18838478.8A priority Critical patent/EP3648506B1/en
Publication of WO2019020117A1 publication Critical patent/WO2019020117A1/zh
Priority to US16/773,025 priority patent/US11317451B2/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers

Definitions

  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to a method, device, and system for activating a session.
  • the 5th-generation (5G) mobile communication system is the most advanced mobile communication technology network, which can provide mobile users with super-capacity bandwidth rate and more secure communication.
  • the 5G system is mainly composed of a core network, a wireless network, and user equipment (UE).
  • UE user equipment
  • service data is transmitted between different devices mainly through a session.
  • the UE can transmit service data through a protocol data unit (PDU) session with the network device.
  • PDU protocol data unit
  • the PDU session is established between the UE and the network device, and the established PDU session is in an inactive state.
  • the PDU session is activated.
  • the signaling interaction process shown in FIG. 1 may be used in the 5G system to activate the PDU session to transmit service data.
  • the UE sends a service request (service request) message to the access and mobility management function (AMF) node through a radio access network (RAN) to request activation of the PDU.
  • AMF access and mobility management function
  • the AMF node After receiving the service request message, the AMF node notifies the session management function (SMF) node to activate the corresponding PDU session, so that the UE transmits the uplink data to the user plane function (UPF) node through the PDU session.
  • SMF session management function
  • multiple PDU sessions in the inactive state may exist between the UE and the network device, and the UEs are respectively Each PDU session initiates a PDU session activation process, and the signaling overhead is large.
  • the embodiment of the invention provides a method, a device and a system for activating a session, which solves the problem that the signaling overhead is large when the existing PDU session is activated.
  • the embodiment of the present invention adopts the following technical solutions:
  • an embodiment of the present invention provides a method for activating a session, including:
  • the control plane node receives the indication information from the AMF node, where the indication information is used to indicate that the AMF node receives the service request message sent by the terminal device, and the control plane node sends the to-be-activated PDU session of the terminal device to the SMF node or the AMF node according to the indication information.
  • the identifier is such that after the SMF node receives the identifier of the PDU session to be activated from the control plane node or receives the identifier of the PDU session to be activated from the AMF node, the PDU session to be activated is activated according to the identifier of the PDU session to be activated.
  • the service request message is sent to the AMF node, where the service request message is used to request to change the terminal device from the idle state to the connected state, or is used to request to activate the terminal device.
  • the non-access stratum (NAS) signaling connection is not established between the terminal device and the AMF node.
  • the terminal device is in the connected state and can be referred to as: the terminal device and the AMF.
  • a NAS signaling connection has been established between the nodes.
  • the identifier of the PDU session to be activated is used to identify the PDU session to be activated of the terminal device, and the PDU session to be activated of the terminal device is the PDU session to be activated.
  • an information exchange is performed between the terminal device and the AMF node, that is, when the terminal device initiates a service request process, determining the identifier of the PDU session to be activated of the terminal device, Activating a PDU session that may be activated in the future, as in the prior art, only when the data corresponding to the PDU session needs to be sent, the PDU session is activated, causing the terminal device to initiate multiple PDU session activation processes.
  • the technical solution provided reduces the number of times the terminal device initiates a PDU session activation process, and reduces signaling overhead.
  • control plane node sends the identifier of the to-be-activated PDU session of the terminal device to the SMF node or the AMF node according to the indication information, which may include:
  • the control plane node obtains the activation related parameter of the terminal device according to the indication information, determines the to-be-activated PDU session of the terminal device according to the obtained activation-related parameter, and sends the determined identifier of the to-be-activated PDU session to the SMF node or the AMF node.
  • the activation related parameter is used to determine the PDU sesson of the terminal device to be activated.
  • control plane node can determine the to-be-activated PDU session of the terminal device according to the activation-related parameter, and does not need to rely on the determination result of other devices, thereby reducing the signaling overhead caused by mutual interaction between the devices.
  • control plane node may determine, according to the activation related parameters, the PDU session to be activated of the terminal device, which may include, but is not limited to, the following implementation manners:
  • the activation related parameter includes the correspondence between the location area and the PDU session of the terminal device, and the control plane node determines the PDU session corresponding to the current location area of the terminal device to be activated according to the current location area and the corresponding relationship of the terminal device. PDU session.
  • the PDU session of the terminal device corresponding to the location area in the foregoing correspondence relationship includes: a PDU session in which the activation frequency is relatively high when the terminal device is located in the location area (for example, the activation frequency is higher than a preset threshold, that is, is frequently activated).
  • the location area may be a network concept area, such as a cell, a tracking area TA, a tracking area list (TAl), or a geographic location, such as: Haidian District and Chaoyang District. It can also be a finer-grained area, such as Zhongguancun, Haidian District.
  • the location area currently located by the terminal device may be determined by the control plane node according to the location information acquired from the AMF node, for example, the control plane node may receive location information indicating the location area where the terminal device is located from the AMF node, according to the location information. Determine the location area where the terminal device is currently located.
  • the activation related parameter in the mode (1) may be acquired by the control plane node from the SMF node or the AMF node of the PDU session of the management terminal device, or determined by the control plane node according to the mobility statistics obtained from the AMF node. get.
  • the activation related parameter may include an initial activation time of the at least one PDU session of the terminal device and an activation period
  • the control plane node may determine an estimated activation time of the at least one PDU session according to the initial activation time of the at least one PDU session and the activation period.
  • the PDU session in which the estimated time difference between the estimated activation time and the current time in the at least one PDU session is less than or equal to the first preset threshold is determined as the PDU session to be activated.
  • the estimated activation time of the PDU session is the time after the current time and the activation time of the PDU session is different from the previous activation time.
  • the last activation time of the PDU session is the activation before the current time and adjacent to the current time. At the moment, the activation time is the time at which the PDU session is activated.
  • the initial activation time of the PDU session is the time when the PDU session is activated for the first time.
  • the activation period of the PDU session is the time interval between two adjacent activation times of the PDU session.
  • the initial activation time and the activation period of the PDU session can be set as needed, which is not limited in this embodiment of the present invention.
  • the first preset threshold may be set as needed. The embodiment of the present invention does not limit this.
  • the time difference between the estimated activation time of the PDU session and the current time is less than or equal to the first preset threshold, it indicates that the current time is short.
  • the PDU session is activated in the service request process, and the PDU session is activated in the current service request process.
  • the time difference between the estimated activation time of the PDU session and the current time is greater than the first preset threshold, it means that the current time is not short.
  • the PDU session is activated, and the PDU session is not activated as the PDU session to be activated in the current service request process.
  • the activation related parameter in the mode (2) may be acquired by the control plane node from the SMF of the PDU session of the management terminal device.
  • the activation related parameter includes a fixed activation time of at least one PDU session of the terminal device, and the control plane node determines, as the PDU session, that the time difference between the fixed activation time and the current time in the at least one PDU session is less than or equal to the second preset threshold. Activate the PDU session.
  • the fixed activation time of the PDU session may be: the PDU session is activated every time the activation time is reached, and the fixed activation time may be set as needed, which is not limited in the embodiment of the present invention. It can be understood that the above fixed activation time compared with the current time is a fixed activation time after the current time.
  • the second preset threshold may be set as needed. The embodiment of the present invention does not limit this.
  • the time difference between the fixed activation time of the PDU session and the current time is less than or equal to the second preset threshold, it indicates that the current time is short.
  • the PDU session is activated, and the PDU session is activated in the current service request process.
  • the time difference between the fixed activation time of the PDU session and the current time is greater than the second preset threshold, it indicates that the current time does not activate the short time.
  • the PDU session is not activated in the service request process as the PDU session to be activated.
  • the activation related parameter in the mode (3) may be acquired by the control plane node from the SMF of the PDU session of the management terminal device.
  • the activation related parameters include the correspondence between the PDU session of the terminal device and the associated PDU session, and the control plane node according to the correspondence between the PDU session of the terminal device and the associated PDU session, and the PDU session requested by the terminal device.
  • the associated PDU session corresponding to the PDU session requested by the terminal device is determined as the PDU session to be activated.
  • the associated PDU session corresponding to the PDU session of the terminal device in the correspondence between the PDU session of the terminal device and the associated PDU session is: a PDU session that is activated within a preset time after the PDU session of the terminal device is activated;
  • the set time can be set as needed, and the comparison of the embodiments of the present invention is not limited.
  • the service request message includes a PDU session that the terminal device requests to activate
  • the AMF node sends the indication information and the identifier of the PDU session to the control plane.
  • the control plane node receives the indication information from the AMF node and also receives the identifier of the PDU session that the terminal device requests to activate.
  • the indication information and the identifier of the PDU session that the terminal device requests to activate may be carried in a signaling message, or may be separately carried in different signaling messages, which is not limited in this embodiment of the present invention.
  • the activation related parameter in the mode (4) may be acquired by the control plane node from the SMF of the PDU session of the management terminal device or from the AMF node.
  • control plane node can determine the PDU session to be activated according to the mobility characteristics of the terminal device or according to the characteristics of the PDU session of the terminal device (eg, the activation period of the PDU session or the association between the fixed activation time or the PDU session).
  • the method may further include: controlling, by the control plane node, the prediction function of the control plane node according to the first prediction function related information;
  • the first prediction function related information may include, but is not limited to, at least one of the following information: a device type of the terminal device, a service type supported by the terminal device, subscription data of the terminal device, a request message reported by the terminal device, and whether the SMF node is The information supporting the prediction function of the control plane node and the information of whether the AMF node supports the prediction function of the control plane node; wherein the request message is used to request the control plane node to open the prediction function of the control plane node.
  • the prediction function of the control plane node is a function of the control plane node to determine the PDU session to be activated.
  • control plane node may obtain the first prediction function related parameter from the SMF node or the AMF node.
  • control plane node can open the prediction function of the control plane node after referring to some information, and does not need to open the prediction function after the control plane node is turned on, and can improve the security of the control plane node prediction while reducing the power consumption of the control plane node. Sex.
  • the control plane node in the embodiment of the present invention may be a network data analytics (NWDA) node, or may be a policy control function (PCF) node.
  • NWDA network data analytics
  • PCF policy control function
  • the interaction between the AMF node and the NWDA node may be: the AMF node directly interacts with the NWDA node, and the AMF node interacts with the NWDA node through the PCF node, that is, AMF.
  • the node first sends the information to the PCF node, and the NWDA node receives the information sent by the AMF node from the PCF node.
  • the foregoing activation related parameter and the first prediction function related information may be acquired by the PCF node from other nodes, and the acquisition manner is the same as the manner in which the NWDA node acquires the activation related parameter and the first prediction function related information. It will not be described here; it can also be obtained from the NWDA node by the PCF node.
  • the PCF node can receive the activation-related parameters from the NWDA node; Before the first prediction function related information turns on the prediction function of the PCF node, the PCF node may receive the first prediction related information from the NWDA node.
  • the technical solution provided by the embodiment of the present invention can be implemented by a plurality of different control plane nodes in the communication system, and the flexibility of the implementation of the solution is improved.
  • the identifier of the to-be-activated PDU session of the terminal device sent by the control plane node to the SMF node or the AMF node may include:
  • the control plane node sends an activation request message to the SMF node, where the activation request message includes an identifier of the PDU session to be activated, and the activation request message is used to request the SMF node to activate the PDU session to be activated; or
  • the control plane node sends a response message to the AMF node, where the response message includes an identifier of the PDU session to be activated, and the response message is used to instruct the AMF node to send an identifier of the PDU session to be activated to the SMF node.
  • control plane node can carry the identifier of the PDU session to be activated in the message and send it to the SMF node or the AMF node, which improves the security of the identity transmission of the PDU session to be activated.
  • an embodiment of the present invention provides a control plane node, including:
  • a receiving unit configured to receive indication information from the AMF node, where the indication information is used to indicate that the AMF node receives the service request message sent by the terminal device;
  • a processing unit configured to send, by the sending unit, an identifier of the to-be-activated PDU session of the terminal device to the SMF node or the AMF node according to the indication information received by the receiving unit, so that the SMF node receives the identifier of the PDU session to be activated from the control plane node or After receiving the identifier of the PDU session to be activated from the AMF node, the PDU session to be activated is activated according to the identifier of the PDU session to be activated.
  • control plane node may refer to the behavior function of the control plane node in the method for activating the session provided by the foregoing aspect or the possible implementation manner of the foregoing aspect, and details are not described herein again. Therefore, the control plane node provided by this aspect can achieve the same advantageous effects as the above aspects.
  • the embodiment of the present application provides a control plane node, where the control plane node can implement the functions performed by the control plane node in the foregoing method embodiment, and the function can be implemented by hardware, or the corresponding software can be executed by hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • control plane node includes a processor and a communication interface configured to support the control plane node to perform the corresponding functions in the above method.
  • the communication interface is used to support communication between the control plane node and other network elements.
  • the control plane node can also include a memory for coupling with the processor that holds the necessary program instructions and data for the control plane node.
  • an embodiment of the present application provides a computer storage medium for storing computer software instructions for use by the control plane node, the computer software instructions comprising a program for executing the solution of the above aspect.
  • an embodiment of the present application provides a computer program product storing computer software instructions for use by the control plane node, the computer software instructions comprising a program for performing the solution of the above aspects.
  • the embodiment of the present application provides a device, which is in the form of a product of a chip.
  • the device includes a processor and a memory, and the memory is coupled to the processor, and saves necessary program instructions of the device.
  • the processor is operative to execute program instructions stored in the memory such that the apparatus performs the functions of the control plane node in the above method.
  • an embodiment of the present invention provides a method for activating a session, which may include:
  • the AMF node receives a service request message sent by the terminal device
  • the AMF node sends the indication information to the control plane node according to the service request message, where the indication information is used to indicate that the AMF node receives the service request message sent by the terminal device, so that the control plane node sends the terminal device to the AMF node or the SMF node according to the indication information. ID of the PDU session to be activated.
  • the service request message is used to request to change the terminal device from the idle state to the connected state.
  • the AMF node receives the service request message sent by the terminal device, it indicates that the terminal device initiates the service request process, and implements the terminal through the service request process. Conversion of the device from idle state to connected state; or,
  • the service request message is used to request activation of a certain PDU session of the terminal device.
  • the AMF node receives the service request message sent by the terminal device, it indicates that the terminal device initiates a service request process, and the activation of the terminal device is implemented by the service request process. PDU session.
  • the AMF node when the terminal device initiates the service request process, the AMF node sends the indication information to the control plane node, where the indication information is used to indicate that the AMF node receives the sending by the terminal device.
  • the indication information of the service request message so that the control plane node sends the identifier of the to-be-activated PDU session of the terminal device to the other node, so that the other node activates the to-be-activated PDU session according to the identifier of the PDU session to be activated, and implements a service initiated by the terminal device.
  • the activation of the PDU session that needs to be activated in the future is not required.
  • the PDU session is activated only when the data corresponding to the PDU session needs to be sent, so that the terminal device initiates multiple PDU session activation processes.
  • the technical solution provided by the example reduces the number of times that the terminal device initiates the PDU session activation process, and reduces signaling overhead.
  • the service request message may include an identifier of the PDU session that the terminal device requests to activate; the method further includes:
  • the AMF node sends the identifier of the PDU session requested by the terminal device to the control plane node, so that the control plane node sends the identifier of the PDU session requested by the terminal device to the SMF node, so that the SMF node activates the PDU session according to the identifier of the PDU session requested by the terminal device.
  • PDU session or,
  • the AMF determines, according to the identifier of the PDU session that the terminal device requests to activate, the DNN of the PDU session that the terminal device requests to activate, and sends the DNN of the PDU session that the terminal device requests to activate to the control plane node; or
  • the AMF node determines, according to the identifier of the PDU session that the terminal device requests to activate, the NSSAI of the PDU session that the terminal device requests to activate, and sends the NSSAI of the PDU session that the terminal device requests to activate to the control plane node; or
  • the AMF node determines the DNN and NSSAI of the PDU session that the terminal device requests to activate according to the identifier of the PDU session that the terminal device requests to activate, and sends the NSSAI and DNN of the PDU session that the terminal device requests to activate to the control plane node.
  • the AMF node may receive a service request message sent by the terminal device through the access network node, for example, the access network node receives the radio resource control (RRC) signaling. After the service request message is sent to the terminal device, the access network node sends the service request message to the AMF node through the N2 interface signaling. After receiving the N2 interface signaling, the AMF node obtains the terminal device requesting activation through the decapsulation process. The identifier of the PDU session is sent to the control plane node by encapsulation processing.
  • RRC radio resource control
  • the PDU session that the terminal device requests to activate can be activated by the service request process initiated by the terminal device.
  • the method may further include:
  • the AMF node receives, from the control plane node, an identifier of the to-be-activated PDU session of the terminal device;
  • the AMF node sends an activation request message to the SMF node, where the activation request message includes an identifier of the PDU session of the terminal device to be activated, and the activation request message is used to request the SMF node to activate the PDU session to be activated.
  • the AMF node sends the SMF node to the SMF node.
  • the activation request message further includes an identifier of the PDU session that the terminal device requests to activate; when the service request message includes the PDU session that the terminal device requests to activate, and activates the PDU session requested by the terminal device and the SMF node of the activated PDU session of the activated terminal device is
  • the AMF node sends the terminal device to the SMF node 2 While the activation request message of the identity of the PDU session is to be activated, the AMF node also needs to send an activation request message to the SMF node 1 containing the identity of the PDU session to which the terminal device requests activation.
  • the AMF node can send the received identifier of the PDU session to be activated to the SMF node, so that the SMF node activates the PDU session according to the identifier.
  • the control plane node can be an NWDA node or a PCF node.
  • the AMF node can receive the identifier of the PDU session to be activated sent by different nodes, which improves the flexibility of implementation of the solution.
  • an AMF node including:
  • a receiving unit configured to receive a service request message sent by the terminal device
  • a sending unit configured to send, according to the service request message, instruction information to the control plane node, where the indication information is used to indicate that the AMF node receives the service request message sent by the terminal device, so that the control plane node receives the indication information, according to the
  • the indication information sends an identifier of the to-be-activated PDU session of the terminal device to the AMF node or the SMF node.
  • the AMF node provided by this aspect can achieve the same advantageous effects as the above aspects.
  • the embodiment of the present application provides an AMF node, where the AMF node can implement the functions performed by the AMF node in the foregoing method embodiment, and the function can be implemented by using hardware or by executing corresponding software through hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the structure of the AMF node includes a processor and a communication interface configured to support the AMF node to perform the corresponding functions in the above method.
  • the communication interface is used to support communication between the AMF node and other network elements.
  • the AMF node can also include a memory for coupling with the processor that holds the necessary program instructions and data for the AMF node.
  • an embodiment of the present application provides a computer storage medium for storing computer software instructions for use by the AMF node, the computer software instructions comprising a program for executing the solution of the above aspect.
  • an embodiment of the present application provides a computer program product storing computer software instructions for use by the AMF node, the computer software instructions comprising a program for performing the solution of the above aspects.
  • the embodiment of the present application provides a device, which is in the form of a product of a chip.
  • the device includes a processor and a memory, and the memory is coupled to the processor to save necessary program instructions of the device. And data, the processor is operative to execute program instructions stored in the memory such that the apparatus performs the functions of the AMF node in the above method.
  • an embodiment of the present invention provides a method for activating a session, which may include:
  • the AMF node receives a service request message sent by the terminal device
  • the AMF node sends an identifier of the to-be-activated PDU session of the terminal device to the SMF node according to the service request message, so that the SMF node activates the to-be-activated PDU session according to the identifier of the to-be-activated PDU session.
  • the service request message is used to request that the terminal device be switched from the idle state to the connected state, or activate a certain PDU session of the terminal device.
  • the AMF receives the service request message sent by the terminal device, it indicates that the terminal device initiates the A service request process for converting a terminal device from an idle state to a connected state or activating a certain PDU session of the terminal device.
  • the identifier of the PDU session to be activated is used to identify the PDU session to be activated of the terminal device, and the PDU session to be activated is the PDU session of the terminal device to be activated.
  • the terminal device when the terminal device interacts with the AMF node once, that is, when the terminal device initiates a service request process, the identifier of the PDU session to be activated of the terminal device is determined. Activating a PDU session that may be activated in the future, as in the prior art, only when the data corresponding to the PDU session needs to be sent, the PDU session is activated, causing the terminal device to initiate multiple PDU session activation processes.
  • the technical solution provided reduces the number of times the terminal device initiates a PDU session activation process, and reduces signaling overhead.
  • the AMF node sends, to the SMF node, the identifier of the to-be-activated PDU session of the terminal device according to the service request message, including:
  • the AMF node obtains an activation related parameter of the terminal device according to the service request message
  • the AMF node determines the to-be-activated PDU session of the terminal device according to the activation-related parameter, and sends an identifier of the to-be-activated PDU session to the SMF node.
  • the activation related parameter may be acquired by the AMF node from the NWDA node, or the AMF node may be acquired from the PCF node.
  • control plane node can determine the PDU session to be activated of the terminal device according to the activation related parameter, and does not need to rely on the determination result of the PDU session to be activated by other devices, thereby reducing the signaling overhead caused by mutual interaction between the devices.
  • the manner in which the AMF node determines the manner in which the PDU session of the terminal device is to be activated according to the activation-related parameter may refer to the manner in which the control plane node determines the PDU session to be activated of the terminal device according to the activation-related parameter, and details are not described herein again.
  • the AMF node can determine the PDU session to be activated according to the mobility characteristics of the terminal device or according to the characteristics of the PDU session of the terminal device (eg, the activation period of the PDU session or the association between the fixed activation time or the PDU session).
  • the method may further include: the AMF node, according to the second prediction function related information, enable the prediction function of the AMF node;
  • the second prediction function related information includes, but is not limited to, at least one of the following: a device type of the terminal device, a service type supported by the terminal device, subscription data of the terminal device, a request message reported by the terminal device, and whether the AMF node is Information supporting the prediction function of the control plane node; the request message is used to request the AMF node to enable the prediction function of the AMF node.
  • the prediction function of the AMF node may be: the AMF node determines the function of the PDU session of the terminal device to be activated.
  • the AMF node can open the prediction function of the AMF node after referring to some information, and does not need the AMF node node to turn on the prediction function after the power is turned on, and can reduce the power consumption of the AMF node while improving the security of the AMF node prediction.
  • the service request message includes an identifier of the PDU session that the terminal device requests to activate; the method may further include:
  • the AMF node sends an identifier of the PDU session requested by the terminal device to the SMF node, so that the SMF node activates the PDU session requested by the terminal device according to the identifier of the PDU session.
  • the AMF node can send the identifier of the PDU session requested by the terminal device to the SMF node, and the identifier of the PDU session to be activated, so that the SMF node activates the PDU session to be activated while activating the terminal device requesting the activated PDU session.
  • the AMF node may send an activation request message to the SMF node;
  • the activation request message includes an identifier of the PDU session that the terminal device requests to activate, and an identifier of the PDU session of the terminal device to be activated.
  • the activation request message is used to request the SMF node to activate the PDU session requested by the terminal device and the PDU session to be activated by the terminal device. .
  • the AMF node when the PDU session requested by the activation terminal device and the SMF node of the activated PDU session of the active terminal device are the same SMF node, the AMF node sends an activation request message to the same SMF node; when the PDU session requested by the terminal device is activated
  • the SMF node to activate the PDU session of the active terminal device is a different SMF node (eg, the PDU session requested by the active terminal device is the SMF node, the SMF node is the SMF node, and the SMF node of the activated terminal device is the SMF node 2)
  • the AMF node sends an activation request message including the identifier of the to-be-activated PDU session of the terminal device to the SMF node 2
  • the AMF node also needs to send an activation request message to the SMF node 1 containing the identifier of the PDU session requested by the terminal device to activate.
  • the AMF node can encapsulate the identifier of the PDU session that the terminal device requests to activate, and the identifier of the PDU session of the terminal device to be activated, in an activation request message, and send the message to the SMF node, which improves the security of the identity transmission.
  • the method may further include:
  • the AMF node receives the first session message from the SMF node, and sends the first session message and other information (such as a security context, a handover restriction list, etc.) to the access network node for connection.
  • the network access node establishes an RRC connection reconfiguration with the terminal device according to the first session message, and establishes security between the terminal device and the access network node according to some other information;
  • the AMF node receives a second session message from the access network node, where the second session message includes: RAN N3 tunnel information, and a list of accepted QoS flows for the activated PDU session.
  • the AMF node sends a second session message to the SMF node.
  • the PDU session is activated by the information exchange between the AMF node and the SMF node.
  • an AMF node including:
  • a receiving unit configured to receive a service request message sent by the terminal device
  • the processing unit is configured to send, by the sending unit, the identifier of the to-be-activated PDU session of the terminal device to the SMF node according to the service request message received by the receiving unit, so that the SMF node activates the to-be-activated PDU session according to the identifier of the to-be-activated PDU session.
  • the AMF node provided by this aspect can achieve the same advantageous effects as the above aspects.
  • the embodiment of the present application provides an AMF node, which can implement the functions performed by the AMF node in the method embodiment described in the foregoing, and the function can be implemented by hardware or by hardware. Perform the appropriate software implementation.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the structure of the AMF node includes a processor and a communication interface configured to support the AMF node to perform the corresponding functions in the above method.
  • the communication interface is used to support communication between the AMF node and other network elements.
  • the AMF node can also include a memory for coupling with the processor that holds the necessary program instructions and data for the AMF node.
  • an embodiment of the present application provides a computer storage medium for storing computer software instructions for use by the AMF node, the computer software instructions including a program for executing the above described aspect.
  • an embodiment of the present application provides a computer program product, where the program product stores computer software instructions for use by the AMF node, and the computer software instructions include a program for executing the foregoing aspect.
  • the embodiment of the present application provides a device, which is in the form of a product of a chip.
  • the device includes a processor and a memory, and the memory is coupled to the processor to save necessary program instructions of the device. And data, the processor for executing program instructions stored in the memory such that the apparatus performs the functions of the AMF node in the method of the above described further aspect.
  • the embodiment of the present invention provides a method for activating a session, which may include:
  • the terminal device determines, according to the activation related parameter, the PDU session to be activated that activates the terminal device;
  • the terminal device sends the identifier of the to-be-activated PDU session of the terminal device to the AMF node, so that the AMF node sends the identifier of the to-be-activated PDU session of the terminal device to the SMF, and the SMF node activates the to-be-activated PDU session according to the identifier of the to-be-activated PDU session.
  • the terminal device may determine the PDU session to be activated (ie, the PDU session of the terminal device to be activated) according to the activation related parameter, and send the to-be-activated to the AMF node.
  • the PDU session is identified, so that the AMF node sends the to-be-activated PDU session to the SMF node to complete the activation of the PDU session to be activated.
  • the terminal device can inform the AMF node terminal device of the PDU session to be activated in an interaction with the AMF node.
  • the technical solution provided reduces the number of times the terminal device initiates a PDU session activation process, and reduces signaling overhead.
  • the method for determining the manner in which the terminal device determines the PDU session to be activated according to the activation-related parameter may refer to the manner in which the control plane node determines the PDU session to be activated of the terminal device according to the activation-related parameter, and details are not described herein again.
  • the terminal device can determine the PDU session to be activated according to the mobility characteristics of the terminal device or according to the characteristics of the PDU session of the terminal device, such as the activation period of the PDU session or the association between the fixed activation time or the PDU session.
  • the terminal device may acquire the activation related parameter from the network entity function node by using a registration process or a terminal device configuration update process; wherein the network entity function node is the above AMF node, or an NWDA node, or a policy control function PCF node.
  • the registration process or the terminal device configuration update process may refer to the prior art, and details are not described herein again.
  • the terminal device can obtain the activation related parameter from the regular interaction with other nodes to determine the PDU session to be activated of the terminal device, and the terminal device does not need to temporarily determine the PDU to be activated through new signaling interaction with other nodes. Sessions reduce interaction between terminal devices and other nodes, reducing signaling overhead.
  • the method may further include: The terminal device starts the prediction function of the terminal device according to the third prediction function related information;
  • the third prediction function related information includes, but is not limited to, at least one of the following: a device type of the terminal device, a service type supported by the terminal device, and subscription data of the terminal device.
  • the terminal device can enable the prediction function of the terminal device after referring to some information, and does not need to enable the prediction function after the terminal device is powered on, and can improve the prediction security of the terminal device while reducing the power consumption of the terminal device.
  • the method may further include:
  • the terminal device triggers a service request process, and sends a service request message to the AMF node, where the service request message is used to request to convert the terminal device from the idle state to the connected state, or the service request message includes an identifier of the PDU session that the terminal device requests to activate,
  • the service request message is used to request activation of a certain PDU session of the terminal device.
  • the terminal device may trigger the service request process in the following situations: 1.
  • the terminal device needs to perform signaling interaction with the AMF node, and changes from the idle state to the connected state; 2. the terminal device is in the connected state, and the terminal device is in a certain state. There is data transmission on the PDU session.
  • the terminal device needs to perform signaling interaction with the AMF node, changing from the idle state to the connected state, and there is data transmission on a certain PDU session of the terminal device.
  • an embodiment of the present invention provides a terminal device, including:
  • a determining unit configured to determine, according to the activation related parameter, an PDU session to be activated that activates the terminal device
  • a sending unit configured to send, to the AMF node, an identifier of the to-be-activated PDU session of the terminal device determined by the determining unit, so that the AMF node sends the identifier of the to-be-activated PDU session of the terminal device to the SMF, and the SMF node according to the identifier of the to-be-activated PDU session Activate these to-be-activated PDU sessions.
  • the terminal device provided by this aspect can achieve the same advantageous effects as the above aspects.
  • the embodiment of the present application provides a terminal device, where the terminal device can implement the functions performed by the terminal device in the method embodiment described in the foregoing aspect, where the function can be implemented by hardware or by hardware. Perform the appropriate software implementation.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the structure of the terminal device includes a processor and a communication interface, and the processor is configured to support the terminal device to perform a corresponding function in the above method.
  • the communication interface is used to support communication between the terminal device and other network elements.
  • the terminal device can also include a memory for coupling with the processor that retains the program instructions and data necessary for the terminal device.
  • an embodiment of the present application provides a computer storage medium for storing computer software instructions for use in the terminal device, the computer software instructions including a program for executing the above described aspect.
  • an embodiment of the present application provides a computer program product, where the program product stores computer software instructions for use in the terminal device, and the computer software instructions include a program for executing the foregoing aspect.
  • the embodiment of the present application provides a device, which is in the form of a product of a chip.
  • the device includes a processor and a memory, and the memory is coupled to the processor to save necessary program instructions of the device. And data, the processor for executing program instructions stored in the memory, such that the apparatus performs the functions of the terminal device in the method of the above-described further aspect.
  • the embodiment of the present invention provides a method for activating a session, which may include:
  • the SMF node receives the indication information from the AMF node, and the indication information is used to indicate that the AMF node receives the service request message sent by the terminal device, and the SMF node activates the to-be-activated PDU session of the terminal device according to the indication information.
  • the identifier of the PDU session to be activated is used to identify the PDU session to be activated of the terminal device, and the PDU session to be activated of the terminal device is a PDU session to be activated.
  • the PDU session that may be activated in the future is activated.
  • the PDU session is not required to be activated only when the data corresponding to the PDU session needs to be sent, and the terminal device initiates multiple PDU session activation processes.
  • the technical solution provided by the embodiment of the present invention reduces the terminal device to initiate the PDU. The number of times the session activates the process, reducing the signaling overhead.
  • the PDU session to be activated of the terminal device is activated according to the indication information, including:
  • the SMF node obtains an activation related parameter of the terminal device according to the indication information
  • the SMF node determines the to-be-activated PDU session of the terminal device according to the activation-related parameter, and activates the to-be-activated PDU session.
  • the activation related parameter may be acquired by the SMF node from the NWDA node, or the PCF node, or the AMF node.
  • the manner in which the SMF node determines the manner of the PDU session to be activated by the terminal device according to the activation-related parameter may refer to the manner in which the control plane node determines the to-be-activated PDU session of the terminal device according to the activation-related parameter, and details are not described herein again.
  • the SMF node can determine the PDU session to be activated according to the mobility characteristics of the terminal device or according to the characteristics of the PDU session of the terminal device (eg, the activation period of the PDU session or the association between the fixed activation time or the PDU session).
  • the method may further include: the SMF node, according to the fourth prediction function related information, enable the prediction function of the SMF node;
  • the fourth prediction function related information may include, but is not limited to, at least one of the following information: a device type of the terminal device, a service type supported by the terminal device, subscription data of the terminal device, a request message reported by the terminal device, and whether the SMF node is Information supporting the prediction function of the SMF node; wherein the request message is used to request the SMF node to enable the prediction function of the SMF node.
  • the prediction function of the SMF node is that the SMF node determines the function of the PDU session to be activated.
  • the SMF node can start the prediction function of the SMF node after referring to some information, and does not need to start the prediction function after the SMF node is powered on, and can improve the security of the SMF node prediction while reducing the power consumption of the SMF node.
  • the execution process of the MF session to be activated by the SMF node to activate the terminal device may refer to a process in which the existing SMF node activates the PDU session, specifically The method includes: the SMF node sends a first session message to the AMF node;
  • the SMF node receives the second session message from the AMF node;
  • the SMF node sends a response message to the AMF node through the N11 interface.
  • the first session message includes some information related to the PDU session to be activated, for example, may include a QoS profile and a CN N3 tunnel information, where the CN N3 tunnel information is used for the access network node.
  • the data of the terminal device is correctly sent to the corresponding UPF node; the QoS profile includes QoS parameter information corresponding to all QoS flows of the PDU session to be activated, and the QoS profile is used by the access network node to establish an air interface bearer.
  • the second session message includes: RAN N3 tunnel information, a list of accepted QoS flows for the PDU Sessions activated, and an activated PDU session reject.
  • a list of rejected QoS flows for the PDU Sessions activated, the RAN N3 tunnel information is used by the UPF node to correctly transmit the data of the terminal device to the corresponding access network node.
  • the SMF node may send the first session message to the AMF node through the N11 interface, and receive the second session message from the AMF node by using the N11 interface.
  • the PDU session is activated by the information exchange between the SMF node and the AMF node.
  • the method may further include :
  • the SMF node initiates an internet protocol-connectivity access network session establishment (IP-CAN Session Establishment);
  • IP-CAN Session Establishment IP-CAN Session Establishment
  • the SMF node configures the RAN N3 tunnel information in the second session message to the UPF node, and the RAN N3 tunnel information is used by the UPF node to correctly send the data of the terminal device to the corresponding access network node.
  • the process of the SMF node initiating the IP-CAN Session Establishment may refer to the prior art (for example, the location of the terminal device reported by the SMF node to the PCF node), which is not described in detail herein.
  • the SMF node can perform the PCC policy by interacting with the UPF node.
  • an SMF node including:
  • a receiving unit configured to receive indication information from the AMF node, where the indication information is used to indicate that the AMF node receives the service request message sent by the terminal device;
  • the activation unit is configured to activate the PDU session to be activated of the terminal device according to the indication information received by the receiving unit.
  • the SMF node provided by this aspect can achieve the same advantageous effects as the above aspects.
  • the embodiment of the present application provides an SMF node, which can implement the functions performed by the SMF node in the method embodiment described in the foregoing aspect, and the function can be implemented by hardware or by hardware. Perform the appropriate software implementation.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the structure of the SMF node includes a processor and a communication interface configured to support the SMF node to perform the corresponding functions in the above method.
  • the communication interface is used to support communication between the SMF node and other network elements.
  • the SMF node can also include a memory for coupling with the processor that holds the necessary program instructions and data for the SMF node.
  • an embodiment of the present application provides a computer storage medium for storing computer software instructions for use by the SMF node, the computer software instructions including a program for executing the above described aspect.
  • an embodiment of the present application provides a computer program product, where the program product stores computer software instructions for use by the SMF node, and the computer software instructions include a program for executing the foregoing aspect.
  • the embodiment of the present application provides a device, which is in the form of a product of a chip.
  • the device includes a processor and a memory, and the memory is coupled to the processor to save necessary program instructions of the device. And data, the processor for executing program instructions stored in the memory such that the apparatus performs the functions of the SMF node in the method of the above described further aspect.
  • the embodiment of the present invention provides a method for activating a session, which may include:
  • the SMF node receives the identifier of the to-be-activated PDU session of the terminal device from the AMF node or the control plane node, and the identifier of the to-be-activated PDU session is determined by the control plane node according to the indication information received from the AMF node, and the indication information is used to indicate that the AMF node receives a service request message sent to the terminal device;
  • the SMF node activates the PDU session according to the identifier of the to-be-activated PDU session.
  • the AMF node receiving the service request message sent by the terminal device indicates that the terminal device initiates a service request process to the AMF node; the identifier of the PDU session to be activated is used to identify the PDU session to be activated of the terminal device, and the PDU session to be activated of the terminal device is The PDU session that will be activated.
  • the terminal device when the terminal device initiates a service request process to the AMF node, the PDU session that may be activated in the future may be activated, and does not need to be the same as the prior art.
  • the PDU session is required to be sent, the PDU session is activated, and the terminal device initiates a multiple PDU session activation process.
  • the technical solution provided by the embodiment of the present invention reduces the number of times the terminal device initiates the PDU session activation process, and reduces signaling. Overhead.
  • the SMF node activates the execution process of the to-be-activated PDU session of the terminal device, and may refer to the possible implementation manner of the foregoing aspect, where the SMF node activates the PDU. The process of the session is not repeated here.
  • an SMF node including:
  • a receiving unit configured to receive, from an AMF node or a control plane node, an identifier of a to-be-activated PDU session of the terminal device, where the identifier of the to-be-activated PDU session is determined by the control plane node according to the indication information received from the AMF node, where the indication information is used to indicate
  • the AMF node receives the service request message sent by the terminal device;
  • the activation unit is configured to activate the to-be-activated PDU session of the terminal device according to the identifier of the PDU session to be activated.
  • the SMF node provided by this aspect can achieve the same advantageous effects as the above aspects.
  • the embodiment of the present application provides an SMF node, which can implement the functions performed by the SMF node in the method embodiment described in the foregoing aspect, and the function can be implemented by hardware or by hardware. Perform the appropriate software implementation.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the structure of the SMF node includes a processor and a communication interface configured to support the SMF node to perform the corresponding functions in the above method.
  • the communication interface is used to support communication between the SMF node and other network elements.
  • the SMF node can also include a memory for coupling with the processor that holds the necessary program instructions and data for the SMF node.
  • an embodiment of the present application provides a computer storage medium for storing computer software instructions for use by the SMF node, the computer software instructions including a program for executing the above described aspect.
  • an embodiment of the present application provides a computer program product, where the program product stores computer software instructions for use by the SMF node, and the computer software instructions include a program for executing the foregoing aspect.
  • the embodiment of the present application provides a device, which is in the form of a product of a chip.
  • the device includes a processor and a memory, and the memory is coupled to the processor to save necessary program instructions of the device. And data, the processor for executing program instructions stored in the memory such that the apparatus performs the functions of the SMF node in the method of the above described further aspect.
  • the embodiment of the present invention provides a system for activating a session, comprising: a terminal device, an AMF node according to any of the possible implementations of still another aspect or another aspect, the foregoing aspect or the foregoing aspect a control plane node, an SMF node, or a terminal device, such as an AMF node, a control plane node, or an SMF node, according to any possible implementation manner of still another aspect or another aspect; or a terminal device, an AMF node, a control plane node, and an SMF node, or a terminal device, an AMF node, a control plane node, and, for example, another aspect or again, according to any of the possible implementations of still another aspect An SMF node as described in any of the possible implementation aspects.
  • FIG. 1 is a schematic diagram of a signaling interaction process provided by the prior art
  • FIG. 2 is a simplified schematic diagram of a system architecture according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a network function node according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure.
  • FIG. 5 is a flowchart of a method for activating a session according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of a method for activating a PDU session according to an embodiment of the present invention
  • FIG. 6 is a flowchart of a method for activating a session according to an embodiment of the present invention.
  • FIG. 7 is a flowchart of still another method for activating a session according to an embodiment of the present invention.
  • FIG. 8 is a flowchart of still another method for activating a session according to an embodiment of the present invention.
  • FIG. 9 is a flowchart of still another method for activating a session according to an embodiment of the present invention.
  • FIG. 10 is a flowchart of still another method for activating a session according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a control plane node according to an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of a control plane node according to an embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of an AMF node according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of an AMF node according to an embodiment of the present disclosure.
  • FIG. 15 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure.
  • FIG. 16 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure.
  • FIG. 17 is a schematic structural diagram of an SMF node according to an embodiment of the present disclosure.
  • FIG. 18 is a schematic structural diagram of an SMF node according to an embodiment of the present invention.
  • the method for activating a session provided by the embodiment of the present invention can be applied to any communication system having a PDU session activation requirement, for example, can be applied to the 5G system shown in FIG. 2.
  • the 5G system may include a terminal device, an access network (AN), a radio access network (RAN) node, a data network (DN) node, and the following.
  • Network functions (NF) nodes NWDA node, authentication server function (AUSF) node, unified data management (UMM) node, AMF node, SMF node, PCF node, application function (application function, AF) node, UPF node.
  • NWDA node NWDA node
  • AUSF authentication server function
  • UMM unified data management
  • AMF node authentication server function
  • SMF node SMF node
  • PCF node application function (application function, AF) node
  • UPF node application function
  • FIG. 2 is only an exemplary architecture diagram.
  • the 5G system may include other functional nodes in addition to the functional nodes shown in FIG. 2, which is not limited by the embodiment of the present invention.
  • each functional node can establish a connection through a next generation (NG) interface to establish communication, for example, the terminal device can establish control through the N interface 1 (referred to as N1) and the AMF node.
  • N1 next generation
  • the AN/RAN node can establish a user plane data connection with the UPF node through the N interface 3 (N3 for short), and the AN/RAN node can establish a control plane signaling connection with the AMF node through the N interface 2 (N2 for short).
  • the UPF node can establish a control plane signaling connection with the SMF node through the N interface 4 (N4 for short).
  • the UPF node can interact with the DN node through the N interface 6 (N6 for short), and the AMF node can pass the N interface 8 (N8 for short).
  • a control plane signaling connection is established with the UDM node, and the AMF node can establish a control plane signaling connection with the AUSF node through the N interface 12 (N12 for short), and the AMF node can control the plane signaling through the N interface 11 (referred to as N11) and the SMF node.
  • the SMF node can be connected to the PCF node control plane signaling through the N interface 7 (N7 for short), and the AMF node can communicate with the NWDA node control plane signaling through the N interface X1 (referred to as NX1, an interface not defined in the 5G system standard).
  • NX1 an interface not defined in the 5G system standard
  • SMF nodes can pass The interface of the NX2 (undefined in the 5G system standard) is connected to the control plane of the NWDA node.
  • the PCF node can be connected to the control plane of the AF node through the N interface 5 (N5 for short).
  • the PCF node can pass the NX3 (5G system standard).
  • the undefined interface in the interface is connected to the NWDA node control plane signaling, and the AUSF node can be connected to the UDM node control plane signaling through the N interface 13 (N13 for short).
  • the terminal device in FIG. 2 may be a UE, and may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a smart phone, a wireless local loop (WLL) station, and an individual.
  • PDA Personal digital assistant
  • laptop handheld communication device
  • handheld computing device satellite wireless device
  • wireless modem card wireless modem card
  • the AN/RAN node is a network composed of multiple 5G-AN/5G-RAN nodes for implementing wireless physical layer functions, resource scheduling and radio resource management, radio access control, and mobility management functions, 5G-AN/5G
  • the RAN node may be: an access node, a generation node B (gNB), a transmission receive point (TRP), a transmission point (TP), or some other access network device.
  • a UDM node, an AUSF node, an NWDA node, a PCF node, an AMF node, an SMF node, and a UPF node may be collectively referred to as an NF node.
  • the NWDA node and the PCF node in the NF node may be referred to as a control plane (CP) node.
  • CP control plane
  • the UPF node can be referred to as a user plane function (UPF) node.
  • UPF user plane function
  • Nodes other than UPF nodes in the NF node can work independently or in combination to implement certain control functions. For example, these nodes can be combined to complete access authentication, security encryption, location registration, etc. of the terminal device.
  • Incoming control and mobility management functions, as well as session management functions such as the establishment, release and change of user plane transmission paths, and the analysis of some slice related data (such as congestion) and terminal device related data.
  • the UPF node mainly performs functions such as routing and forwarding of user plane data, such as: responsible for data packet filtering, data transmission/retransmission, rate control, and generation of charging information for the terminal device.
  • FIG. 3 is a schematic diagram of a network function node according to an embodiment of the present invention.
  • the network function node may include at least one processor 31, a memory 32, a communication interface 33, and a communication bus 34.
  • the device structure shown in FIG. 3 does not constitute a limitation on a network function node, and may include more or less components than those illustrated, or combine some components, or different component arrangements, and are implemented by the present invention. This example does not limit this.
  • the processor 31 is a control center of the network function node, and may be a processor or a collective name of a plurality of processing elements.
  • the processor 31 is a central processing unit (CPU), may be an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present invention.
  • ASIC application specific integrated circuit
  • DSPs digital signal processors
  • FPGAs field programmable gate arrays
  • the processor 31 can perform various functions of the network function node by running or executing a software program stored in the memory 32 and calling data stored in the memory 32.
  • processor 31 may include one or more CPUs, such as CPU0 and CPU1 shown in FIG.
  • the network function node may include multiple processors, such as processor 31 and processor 35 shown in FIG.
  • processors can be a single core processor (CPU) or a multi-core processor (multi-CPU).
  • a processor herein may refer to one or more devices, circuits, and/or processing cores for processing data, such as computer program instructions.
  • the memory 32 can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type that can store information and instructions.
  • the dynamic storage device can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, and a disc storage device. (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be Any other media accessed, but not limited to this.
  • the memory 32 can exist independently and is coupled to the processor 31 via a communication bus 34.
  • the memory 32 can also be integrated with the processor 31.
  • the memory 32 is used to store a software program for executing the solution provided by the embodiment of the present invention, and is controlled by the processor 31 for execution.
  • the communication interface 33 is configured to communicate with other devices or communication networks, such as Ethernet, RAN, wireless local area networks (WLAN), and the like.
  • the communication interface 33 may include a receiving unit that implements a receiving function, and a transmitting unit that implements a transmitting function.
  • the communication bus 34 may be an industry standard architecture (ISA) bus, a peripheral component (PCI) bus, or an extended industry standard architecture (EISA) bus.
  • ISA industry standard architecture
  • PCI peripheral component
  • EISA extended industry standard architecture
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 3, but it does not mean that there is only one bus or one type of bus.
  • the network function node shown in FIG. 3 is the NWDA node or the PCF node according to the embodiment of the present invention
  • the network function node can perform the functions of the NWDA node or the PCF node in the method for activating the session provided by the embodiment of the present invention, such as
  • the communication interface 33 in the network function node may be configured to receive, from the AMF node, indication information indicating that the AMF node receives the service request message sent by the terminal device; the processor 31 in the network function node may be configured to receive according to the communication interface 33.
  • the indication information obtained obtains the activation related parameter, determines the to-be-activated PDU session of the terminal device according to the activation related parameter, and transmits the identifier of the to-be-activated PDU session of the terminal device to the AMF node or the SMF node through the communication interface 33.
  • the AMF node can perform the function of the AMF node in the method for activating the session provided by the embodiment of the present invention, for example, in an implementable manner.
  • the communication interface 33 in the network function node may be configured to receive a service request message sent by the terminal device, and send, to the PCF node or the NWDA node or the SMF node, indication information for instructing the AMF node to receive the service request message sent by the terminal device.
  • the communication interface 33 in the network function node may be used.
  • the processor 31 in the network function node may be configured to obtain the activation related parameter of the terminal device according to the service request message, and determine the to-be-activated PDU session of the terminal device according to the activation related parameter, by using the communication interface. 33 sends an identifier of the to-be-activated PDU session of the terminal device to the SMF node.
  • the network function node shown in FIG. 3 is the SMF node according to the embodiment of the present invention
  • the network function node may be used to perform the function of the SMF node in the method for activating the session provided by the embodiment of the present invention, such as:
  • the communication interface 33 in the network function node may be configured to receive, from the AMF node, indication information for instructing the AMF node to receive the service request message sent by the terminal device; the processor 31 in the network function node may be configured to use
  • the indication information received by the communication interface 33 obtains the activation related parameter of the terminal device, determines the PDU session to be activated of the terminal device according to the activation related parameter, and activates the PDU session to be activated.
  • the communication interface 33 in the network function node may be configured to receive an identifier of the to-be-activated PDU session of the terminal device from the NWDA node or the PCF node; the processor 31 in the network function node may be used according to the communication interface.
  • the identifier of the PDU session to be activated is activated, and the PDU session to be activated is activated.
  • FIG. 4 is a schematic diagram of a composition of a terminal device according to an embodiment of the present invention.
  • the terminal device may include at least one processor 41, a memory 42, a transceiver 43, and a communication bus 44.
  • the processor 41 is a control center of the terminal device, and may be a processor or a collective name of a plurality of processing elements.
  • processor 41 is a CPU, which may be an ASIC, or one or more integrated circuits configured to implement embodiments of the present invention, such as one or more DSPs, or one or more FPGAs.
  • the processor 41 can perform various functions of the terminal device by running or executing a software program stored in the memory 42, and calling data stored in the memory 42.
  • processor 41 may include one or more CPUs, such as CPU0 and CPU1 shown in FIG.
  • the terminal device may include a plurality of processors, such as the processor 41 and the processor 45 shown in FIG. Each of these processors can be a single-CPU processor or a multi-CPU processor.
  • a processor herein may refer to one or more devices, circuits, and/or processing cores for processing data, such as computer program instructions.
  • the memory 42 can be a ROM or other type of static storage device that can store static information and instructions, RAM or other types of dynamic storage devices that can store information and instructions, and can also be EEPROM, CD-ROM or other optical disk storage, optical disk storage. (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be Any other media accessed, but not limited to this.
  • Memory 42 may be present independently and coupled to processor 41 via communication bus 44.
  • the memory 42 can also be integrated with the processor 41.
  • the memory 42 is used to store a software program that executes the solution of the present invention, and is controlled by the processor 41 for execution.
  • the transceiver 43 is configured to communicate with other devices or communication networks, such as Ethernet, RAN, WLAN, and the like.
  • the transceiver 43 may include a receiving unit to implement a receiving function, and a transmitting unit to implement a transmitting function; specifically, the transceiver 43 may be a radio frequency module.
  • the communication bus 44 can be an ISA bus, a PCI bus, or an EISA bus.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 4, but it does not mean that there is only one bus or one type of bus.
  • the terminal device shown in FIG. 4 can perform the operations performed by the terminal device in the method for activating a session provided by the embodiment of the present application.
  • the transceiver 43 in the terminal device can be used to send a service request message to the AMF node; in another implementation manner, the processor 41 in the terminal device can be used to activate the And determining, by the parameter, the activated PDU session of the terminal device, the transceiver 43 of the terminal device may be configured to send, to the SMF node, an identifier of the PDU session to be activated determined by the processor 41, so that the SMF node activates the PDU session according to the identifier of the PDU session to be activated. PDU session.
  • the device structure shown in FIG. 4 does not constitute a limitation on the terminal device, and may include more or less components than those illustrated, or combine some components, or different component arrangements.
  • the terminal device may further include a display, a battery, a camera, a Bluetooth module, a global positioning system (GPS), and the like, and details are not described herein.
  • GPS global positioning system
  • FIG. 5 is a flowchart of a method for activating a session according to an embodiment of the present invention. As shown in FIG. 5, the method may include the following:
  • Step 501 The terminal device sends a service request message to the AMF node.
  • the terminal device may be a terminal device in the 5G system shown in FIG. 2.
  • the service request message may be used to request to convert the terminal device from the idle state to the connected state when the terminal device is in the idle state; or the service request message may be used in the terminal device, and the terminal device is in the connected state.
  • the service request message may include an identifier of the PDU session requested by the terminal device to activate, or the service request message may be used at the terminal.
  • the service request message The identifier of the PDU session that the terminal device requests to activate may be included.
  • the identifier of the PDU session is used to identify a PDU session, and the PDU session is a session of data currently transmitting the terminal device.
  • the PDU session identifier is a number or a letter or other identifier; if the number 1 or the letter A can be used as the identifier of the PDU session1, when the terminal device requests to activate the PDU session1 to transmit data, the service request message in step 501 Can contain the number 1 or the letter A.
  • the identifier of the PDU session may be converted into a corresponding number of bits and included in the service request message for transmission.
  • the terminal device is in an idle state, which may indicate that the NAS signaling connection is not established between the terminal device and the AMF node; and the terminal device is in the connected state, that is, the NAS signaling connection is established between the terminal device and the AMF node.
  • the terminal device may send a service request message to the AMF node by using the N1 interface between the terminal device and the AMF node; the terminal device may also send the service request message to the AMF node by using the access network node, which is not restricted.
  • Step 502 The AMF node receives the service request message sent by the terminal device, and sends the indication information to the control plane node according to the service request message.
  • the indication information is used to indicate that the AMF node receives the service request message sent by the terminal device.
  • the AMF node sends the indication information to the control plane node according to the service request message, including:
  • the service request message is used as a trigger condition for the AMF node to send the indication information.
  • the AMF node receives the service request message, it sends the indication information to the control plane node; or
  • the AMF node determines, according to the service request message, that the terminal device needs to transition from the idle state to the connected state, sending the indication information to the control plane node;
  • the AMF node When the service request message includes the identifier of the PDU session that the terminal device requests to activate, the AMF node sends the indication information to the control plane node, where the AMF node sends the indication information to the control plane node, which may include: requesting the terminal device to activate the PDU session.
  • the identifier is sent to the control plane node as part of the indication information or the indication information; or
  • the service request message includes an identifier of the PDU session that the terminal device requests to activate.
  • the AMF node determines, according to the service request message, that the terminal device needs to transition from the idle state to the connected state, and the terminal device requests to activate the PDU session, the indication is sent to the control plane node.
  • the information, wherein the sending, by the AMF node, the indication information to the control plane node may include: sending the indication information to the control plane node by using the PDU session requested by the terminal device as part of the indication information or the indication information.
  • the AMF node may use the prior art to identify that the received message sent by the terminal device is a service request message. For example, the AMF node may determine the type of the message according to the information contained in the received message header, and determine the receiving according to the type.
  • the incoming message is a service request message, and the service request message functions as described in step 501.
  • the AMF node can also monitor the status of the terminal device in real time.
  • the AMF node receives the service request message sent by the terminal device, if the AMF node detects that the terminal device is currently in the idle state, the AMF node determines that the terminal device needs to be in the idle state. If the service request message includes the identifier of the PDU session that the terminal device requests to activate, and the AMF node detects that the terminal device is currently in the idle state, the AMF node recognizes that the terminal device needs to transition from the idle state to the connected state.
  • the AMF node can monitor the state of the terminal device by using the prior art, and details are not described herein again.
  • the control plane node may be an NWDA node or a PCF node. For details, refer to FIG. 2 .
  • the AMF node can directly exchange information with the NWDA node or exchange information through the PCF node.
  • the AMF node can directly send the indication information to the NWDA node, or can The NWDA node sends the indication information, that is, the AMF node sends the indication information to the PCF node, and the PCF node sends the indication information to the NWDA node after receiving the indication information.
  • the information exchanged between the AMF node and the PCF node, and the information exchanged between the PCF node and the NWDA node may be the same information, for example, an AMF node.
  • the indication information may be sent to the PCF node, and the PCF node sends the indication information to the NWDA node.
  • step 503 may be replaced by the control plane node receiving the above indication information from the PCF node.
  • the information exchanged between the AMF node and the PCF node, and the information exchanged between the PCF node and the NWDA node may also be different information (such as the naming, information format, and content of the two, etc.), such as: AMF node orientation
  • the PCF node sends the foregoing indication information, and the PCF node identifies, according to the indication information, that the AMF node receives the service request message sent by the terminal device, and the PCF node sends, to the NWDA node, information for requesting to predict the PDU session to be activated for the terminal device.
  • step 502 may be replaced by the AMF node transmitting the indication information to the PCF node according to the service request message, and the PCF node sends, according to the indication information, information to the control plane node for requesting to predict the PDU session to be activated for the terminal device;
  • step 503 may be replaced by the control plane node receiving information sent by the PCF node for requesting prediction of the PDU session to be activated for the terminal device, and transmitting, according to the information, the identifier of the PDU session of the terminal device to be activated to the SMF node.
  • Step 503 The control plane node receives the indication information from the AMF node, and sends an identifier of the PDU session of the terminal device to be activated to the SMF node according to the indication information.
  • the identifier of the PDU session to be activated is used to identify the PDU session to be activated of the terminal device, and the PDU session to be activated of the terminal device is a PDU session to be activated, or a PDU session that is activated in the process triggered by the service request message. .
  • the identifier of the PDU session to be activated is a number or a letter or other identifier.
  • the number 2 or the letter B may be used as the identifier of the PDU session 2 to be activated, and the control plane node may send the number 2 or the letter B to the SMF node.
  • the PDU session to be activated of the terminal device is PDU session2. It should be noted that, in order to reduce the information transmission redundancy, when the identifier of the PDU session to be activated is sent, the identifier may be converted into a corresponding number of bits for transmission.
  • the SMF node may be an SMF node corresponding to the to-be-activated PDU session.
  • the correspondence between the PDU session of the terminal device and the SMF node that manages the PDU session may be pre-stored in the AMF node and/or the SMF node, and when step 503 is performed, The control plane node may find an SMF node corresponding to the PDU session to be activated of the terminal device according to the stored correspondence, and send an identifier of the PDU session to be activated to the SMF node.
  • the process of establishing a PDU session of the terminal device can refer to the prior art, and details are not described herein.
  • control plane node when the control plane node is an NWDA node, the control plane node may directly send the identifier of the to-be-activated PDU session of the terminal device to the SMF node, and may also send the identifier of the to-be-activated PDU session of the terminal device to the SMF node by using the PCF node.
  • the NWDA node sends the identifier of the PDU session to be activated to the PCF node.
  • the PCF node After receiving the identifier of the PDU session to be activated, the PCF node sends an identifier of the PDU session to be activated to the SMF node.
  • the NWDA node may send the to-be-activated PDU session in the first message to the PCF node, and the PCF node may be activated, in the process that the NWDA node sends the identifier of the to-be-activated PDU session of the terminal device to the SMF node through the PCF node.
  • the identifier of the PDU session is carried in the second message and sent to the SMF node.
  • the first message and the second message may be the same message.
  • the first message and the second message may be an activation request message for requesting activation of the to-be-activated PDU session, and the NWDA node may send the PDU to be activated to the PCF node.
  • the first message and the second message being different messages may refer to: the naming of the first message and the second message, the message format, the content included, and the like are different.
  • the identifier of the to-be-activated PDU session sent by the control plane node to the SMF node may be: the control plane node sends the identifier of the to-be-activated PDU session to the AMF node, and the AMF node receives the identifier of the to-be-activated PDU session. And sending the identifier of the to-be-activated PDU session to the SMF node; or, after receiving the identifier of the to-be-activated PDU session of the terminal device from the control plane node, the AMF node sends an activation request message to the SMF node, where the activation request message is used to request The SMF node activates the PDU session to be activated.
  • Step 504 The SMF node receives the identifier of the to-be-activated PDU session of the terminal device from the control plane node, and activates the to-be-activated PDU session according to the identifier of the to-be-activated PDU session.
  • FIG. 5 is an exemplary solution for activating a PDU session to be activated by the terminal device.
  • the process of activating multiple PDU sessions to be activated may be referred to the solution shown in FIG. 5 , and details are not described herein again.
  • the terminal device when the terminal device sends a service request message to the AMF node, that is, when the terminal device initiates a service request process, the PDU session that may be activated in the future is activated, that is, once initiated.
  • the service request process can activate the PDU session to be activated in the future. It is not necessary to activate the PDU session only when the data corresponding to the PDU session needs to be sent, which causes the terminal device to initiate multiple PDU session activation processes.
  • the technical solution provided by the embodiment of the invention reduces the number of times that the terminal device initiates the PDU session activation process, and reduces signaling overhead.
  • FIG. 5 is a flowchart of a method for activating a PDU session according to an embodiment of the present invention. As shown in FIG. 5a, FIG.
  • Step 5051 The SMF node sends a first session message to the AMF node.
  • the first session message may be an N2 interface signaling message, and includes some information related to the PDU session to be activated, for example, may include a QoS profile and CN N3 tunnel information, where the CN N3 tunnel information is used by the access network node to The data of the terminal device is correctly sent to the corresponding UPF node; the QoS profile includes QoS parameter information corresponding to all QoS flows of the PDU session to be activated, and the QoS profile is used by the access network node to establish an air interface bearer.
  • the SMF node may send the first session message to the AMF node by using the N11 interface in FIG. 2 .
  • Step 5042 The AMF node receives the first session message from the SMF node, and sends the first session message to the access network node and the security establishment related information.
  • the security establishment related information may include: a security context.
  • the AMF node may send the first session message and the security establishment related information to the access network node by using the N2 interface in FIG. 2 .
  • Step 5043 The access network node receives the first session message and the security establishment related information from the AMF node, establishes an RRC connection reconfiguration with the terminal device according to the first session message, and establishes between the terminal device and the access network node according to the security establishment information. Security.
  • the process in which the access network node establishes an RRC connection reconfiguration with the terminal device according to the first session message, and establishes the security between the terminal device and the access network node according to the security establishment information may refer to the prior art, and details are not provided herein. Said.
  • Step 5044 The access network node sends a second session message to the AMF node.
  • the second session message may include: RAN N3 tunnel information, list of accepted QoS flows for the PDU Sessions activated, and list of rejected QoS flows for the PDU Sessions activated.
  • the access network node may send the second session message to the AMF node by using the N2 interface in FIG. 2 .
  • Step 5045 The AMF node receives the second session message from the access network node, and sends the second session message to the SMF node.
  • Step 5046 The SMF node receives the second session message from the AMF node, and sends a response message to the AMF node.
  • the process shown in FIG. 5a may further include:
  • Step 5047 The SMF node initiates an IP-CAN Session Establishment.
  • Step 5048 The SMF node configures the RAN N3 tunnel information in the second session message to the UPF node.
  • the RAN N3 tunnel information is used by the UPF node to correctly send the data of the terminal device to the corresponding access network node.
  • the execution process of step 5048 can refer to the prior art and will not be described in detail herein.
  • the foregoing solution shown in FIG. 5 may further include: the terminal device sends some additional information to the AMF node, where the additional information may include an identifier of the terminal device, or an identifier of the terminal device and location information of the terminal device; eg, the terminal device
  • the additional information is carried in the RRC request message and sent to the access network node.
  • the access network node After receiving the additional information sent by the terminal device, the access network node carries the additional information in the N2 interface signaling message and sends the information to the AMF node. The process may be performed simultaneously with the step 501.
  • the step 501 may be replaced by: the terminal device sends the service request message and the identifier of the terminal device to the AMF node, or the service request message, the identifier of the terminal device, and the location information of the terminal device. It may also be performed before step 501, and may also be performed after step 501 before the AMF node sends the indication information to the control plane node.
  • the identifier of the terminal device is used to identify the terminal device, and the identifier of the terminal device may be an international mobile subscriber identity (IMSI), and may also be an identifier specified by the communication protocol, where the identifier may correspond to the IMSI.
  • IMSI international mobile subscriber identity
  • the terminal device communicates with the AMF node, a common identifier is specified in the communication protocol, and the identifier may be a number or a letter or other identifier; for example, the number 1 may be used as the identifier corresponding to the IMSI of the terminal device. Used to identify the terminal device 1.
  • the location information of the terminal device is used to determine the current location of the terminal device, which may be a historical camping cell of the terminal device, and a duration of each cell; and may also be a historical camping message of the terminal device and a cell handover.
  • the number of times can also be the coordinate information of the terminal device.
  • the indication information in the foregoing solution shown in FIG. 5 may include the identifier of the terminal device, so that the control plane node obtains the activation related parameter of the terminal device according to the identifier of the terminal device, and determines the to-be-activated PDU of the terminal device according to the activation related parameter.
  • Session can refer to the following method 2-3 in step 604; or,
  • the indication information may include the identifier of the terminal device and the identifier of the PDU session that the terminal device requests to activate, so that the control plane node obtains the activation related parameter of the terminal device according to the identifier of the terminal device, and determines the to-be-activated PDU session of the terminal device according to the activation related parameter. See method 2-4 in step 604 below; or,
  • the indication information may include the identifier of the terminal device, the location information of the terminal device, and the identifier of the PDU session that the terminal device requests to activate, so that the control plane node obtains the activation related parameter of the terminal device according to the identifier of the terminal device, and determines the terminal device according to the activation related parameter.
  • the PDU session to be activated refer to the method 1-4 in the following step 604; or,
  • the indication information may include the identifier of the terminal device and the location information of the terminal device, so that the control plane node obtains the activation related parameter of the terminal device according to the identifier of the terminal device, and determines the to-be-activated PDU session of the terminal device according to the activation related parameter, which can be referred to the following. 1-3 in step 604; or,
  • the indication information may include an identifier of the terminal device and a data network name (DNN) of the PDU session requested by the terminal device, so that the control plane node obtains the activation related parameter of the terminal device according to the identifier of the terminal device, according to the activation related parameter.
  • the DNN of the PDU session determines the to-be-activated PDU session of the terminal device. For details, refer to mode 4 in step 604 below.
  • the DNN is the name of the data network to which the PDU session is connected, and is used to identify the data network to which the PDU session is connected.
  • the AMF may determine the DNN of the PDU session that the terminal device requests to activate according to the identifier of the PDU session that the terminal device requests to activate.
  • the AMF may send the DNN of the PDU session requested by the terminal device to the control plane node.
  • the bearer is sent to the control plane node in the indication message.
  • the determining, by the AMF, the DNN of the PDU session that the terminal device requests to activate according to the identifier of the PDU session that the terminal device requests to activate may include: determining, by the AMF, the activation of the terminal device according to the identifier of the PDU session and the correspondence between the identifier of the PDU session and the DNN. DNN of the PDU session; or,
  • the indication information may include an identifier of the terminal device and a network slice selection assistance information (NSSAI) of the PDU session that the terminal device requests to activate, so that the control plane node obtains the activation related parameter of the terminal device according to the identifier of the terminal device.
  • NSSAI network slice selection assistance information
  • the PDU session to be activated of the terminal device is determined according to the activation related parameter and the NSSAI of the PDU session. For details, refer to the method 4 in the following step 604.
  • the NSSAI of the PDU session is used to indicate the network slice where the SMF that manages the PDU session is located.
  • the NSSAI includes multiple single NSSAIs (single NSSAIs, S-NSSAIs), and the S-NSSAIs are service type (slice/service type, SST) and
  • the slice differentiator (SD) consists of SST including standardization and operator-defined types; SD is optional information supplementing SST to distinguish multiple network slices of the same SST.
  • the AMF may determine the NSSAI of the PDU session that the terminal device requests to activate according to the identifier of the PDU session that the terminal device requests to activate.
  • the AMF may send the NSSAI of the PDU session requested by the terminal device to the control plane node.
  • the bearer is sent to the control plane node in the indication message.
  • the AMF determines, according to the identifier of the PDU session that the terminal device requests to activate, the NSSAI of the PDU session that the terminal device requests to activate, and may include: the identifier of the PDU session that the AMF requests to activate according to the request of the terminal device, and the correspondence between the identifier of the PDU session and the NSSAI. Determining the NSSAI of the PDU session that the terminal device requests to activate; or,
  • the indication information may include the identifier of the terminal device and the DNN and NSSAI of the PDU session that the terminal device requests to activate, so that the control plane node obtains the activation related parameter of the terminal device according to the identifier of the terminal device, according to the activation related parameter, and the DNN of the PDU session.
  • the NSSAI determines the PDU session to be activated of the terminal device. For details, refer to mode 4 in step 604 below.
  • the AMF may determine the DNN and the NSSAI of the PDU session that the terminal device requests to activate according to the identifier of the PDU session that the terminal device requests to activate.
  • the AMF may send the DNN and the NSSAI of the PDU session that the terminal device requests to activate to.
  • the control plane node for example, is carried in the indication message to the control plane node.
  • the AMF determines, according to the identifier of the PDU session that the terminal device requests to activate, the DNN and the NSSAI of the PDU session that the terminal device requests to activate, and may include: an identifier of the PDU session activated by the AMF according to the request of the terminal device, and an identifier of the PDU session and the NSSAI and the DNN. Correspondence relationship, determining the NSSAI of the PDU session that the terminal device requests to activate.
  • the foregoing terminal device requests the identifier of the activated PDU session, or the DNN of the PDU session that the terminal device requests to activate, or the NSSAI of the PDU session that the terminal device requests to activate, or the terminal device requests the activated PDU session.
  • the DNN and the NSSAI may be included in the information other than the indication information and sent to the control plane node without limitation.
  • control plane node sends the identifier of the to-be-activated PDU session to the SMF node according to the indication information, and adopts the following implementation manner:
  • control plane node obtains the activation related parameter of the terminal device according to the indication information, determines the to-be-activated PDU session of the terminal device according to the activation related parameter, and sends the determined identifier of the to-be-activated PDU session to the SMF node.
  • the indication information may include the identifier of the terminal device, or the identifier of the terminal device and the identifier of the PDU session that the terminal device requests to activate, or the identifier of the terminal device, the location information of the terminal device, and the identifier of the PDU session that the terminal device requests to activate, or The identification of the terminal device and the location information of the terminal device.
  • the obtaining, by the control plane node, the activation related parameter of the terminal device according to the indication information may include: the control plane node queries the correspondence between the terminal device and the activation related parameter, and determines the activation related parameter corresponding to the terminal device identified by the identifier of the terminal device. Activation-related parameters for the terminal device.
  • the activation related parameter is as described in the following step 604.
  • the correspondence between the terminal device and the activation related parameter is stored in advance in the control plane node.
  • the control plane node stores: the terminal device 1 and the activation related parameter 1.
  • the terminal device 2 Corresponding relationship between the activation-related parameter 2, the terminal device 3 and the activation-related parameter 3, and the identifier of the terminal device included in the indication information is 1.
  • the control plane can query the correspondence and find the terminal with the identifier 1
  • the activation-related parameter 1 corresponding to the device activates the relevant parameter 1 as the activation-related parameter of the terminal device 1.
  • the foregoing indication information is used as a trigger condition for the control plane node to send the PDU session to be activated to the SMF node. For example, when the control plane node receives the indication information, the identifier of the PDU session of the terminal device to be activated is sent to the SMF node.
  • the indication information includes an identifier of the terminal device and an identifier of the PDU session that the terminal device requests to activate, and the control plane node identifies the terminal device from the identifier of the terminal device included in the indication information, and requests the terminal device to activate the PDU session.
  • the identified PDU session is used as the to-be-activated PDU session of the terminal device, and sends the identifier of the to-be-activated PDU session to the SMF node.
  • the method further includes: the control plane node starts the prediction function of the control plane node according to the prediction function related information.
  • the control plane node may determine the to-be-activated PDU session of the terminal device according to the activation related parameter.
  • the prediction function related information may include at least one of the following information: a device type of the terminal device, a service type supported by the terminal device, a subscription data of the terminal device, a request message reported by the terminal device, and whether the SMF node supports the control plane.
  • another method for activating a session may include:
  • Step 601 The control plane node starts the prediction function of the control plane node according to the first prediction function related information.
  • the prediction function of the control plane node is a function of the control plane node to determine the PDU session to be activated.
  • the first prediction function related information may include, but is not limited to, at least one of the following information: a device type of the terminal device, a service type supported by the terminal device, subscription data of the terminal device, a request message reported by the terminal device, and whether the SMF node is Information supporting the prediction function of the control plane node and information on whether the AMF node supports the prediction function of the control plane node.
  • the device type of the terminal device may be determined according to the service capability that the terminal device can provide. For example, for a machine-to-machine (M2M) type terminal device (such as a sensor), only one PDU session exists, and the control plane The node may not perform prediction; for the vehicle to any other thing (vechile to X, V2X) type terminal equipment, the delay requirement is relatively high, and the control plane node can turn on the prediction function.
  • M2M machine-to-machine
  • the types of services supported by the terminal device may include: image, voice, video, and the like.
  • the control plane node can enable prediction.
  • the subscription data of the terminal device may be: data that is filled in when the terminal device performs the network signing, and the data of the network sign is used to determine whether the terminal device performs prediction. For example, when the subscription data of the terminal device indicates that the terminal device performs prediction, the control plane node starts the prediction function according to the subscription data of the terminal device; when the network label data of the terminal device indicates that the terminal device does not predict, the control plane node The prediction function is turned off according to the subscription data of the terminal device.
  • the request message reported by the terminal device is used to request the control plane node to enable the prediction function. For example, when the control plane node receives the request information, the prediction function of the control plane node is turned on.
  • Whether the SMF node supports the prediction function of the control plane node may be acquired by the control plane node from the SMF node, and when the control plane node acquires the information of the prediction function of the SMF node supporting the control plane node, the control plane node may enable the prediction function when When the control plane node acquires information that the SMF node does not support the prediction function of the control plane node, the control plane node turns off the prediction function.
  • Whether the AMF node supports the prediction function of the control plane node may be acquired by the control plane node from the AMF node.
  • the control plane node may enable the prediction function.
  • the control plane node acquires information that the AMF node does not support the prediction function of the control plane node, the control plane node turns off the prediction function.
  • step 601 is an optional step.
  • Step 602 The terminal device sends a service request message to the AMF node.
  • the step 602 and the service request message may be the same as the step 501, and details are not described herein again.
  • Step 603 The AMF node receives the service request message sent by the terminal device, and sends the indication information to the control plane node according to the service request message.
  • step 603 For the step 603 and the indication information, reference may be made to step 502, and details are not described herein again.
  • Step 604 The control plane node receives the indication information from the AMF node, obtains the activation related parameter of the terminal device according to the indication information, and determines the to-be-activated PDU session of the terminal device according to the activation related parameter.
  • control plane node obtains the activation related parameter of the terminal device according to the indication information.
  • the determining, by the control plane node, the to-be-activated PDU session of the terminal device according to the activation-related parameter may include, but is not limited to, at least one implementable manner:
  • the activation related parameter of the terminal device includes a correspondence between the location area and the PDU session of the terminal device, and the control plane node sets the terminal corresponding to the current location area of the terminal device according to the corresponding relationship and the location information of the terminal device.
  • the PDU session of the device is determined to be the PDU session to be activated.
  • the PDU session of the terminal device corresponding to the location area in the foregoing relationship includes: when the terminal device is located in the location area, the activation frequency of the PDU session of the terminal device is relatively high (for example, the activation frequency is higher than a preset threshold, that is, the terminal is frequently activated. ) PDU session.
  • the activation status of the PDU session of the terminal device corresponding to the location area dynamically changes with the activation of the PDU session, and the PDU session that is currently in an inactive state may exist, or the PDU session that is currently in an active state may exist.
  • the PDU session in the inactive state may be activated as the PDU session to be activated.
  • the location area A corresponds to the PDU session 1, the PDU session 2, the PDU session 3.
  • the PDU session 2 is in the active state, and the PDU session 1 and the PDU session 3 are in the inactive state.
  • the terminal device is currently in the location area A, the PDU session 1 and the PDU session 3 can be determined as The PDU session is to be activated.
  • the location area may be an area of the network concept, such as: cell, TA, TAI; or may be a geographical location, such as: Haidian District, Chaoyang District; or may be a finer-grained area, such as Zhongguancun, Haidian District.
  • control plane node may obtain location information of the terminal device from the received indication information, and identify a location area where the terminal device is currently located according to the location information.
  • the activation related parameter may be obtained by the control plane node from the SMF node that manages the PDU session or obtained from the AMF node, or determined by the control plane node according to the mobility statistics of the terminal device acquired from the AMF node, and pre-connected with the terminal device. The corresponding is stored in the control plane node.
  • the mobility statistics of the terminal device may include: a probability that each PDU session of the terminal device is in an activated state when the terminal device is in a certain location area or a number of times each PDU session is activated.
  • the control plane node may determine, as the PDU session with a probability greater than the probability threshold, or the PDU session to be activated more than the preset number of times, corresponding to the location area. The PDU session of the terminal device and save the correspondence between the two.
  • the probability threshold and the preset number can be set as needed.
  • the mobility statistics of the terminal device acquired by the control plane node is: when the terminal device is in the location area A, the probability that the PDU session1 is in the active state is 90%, the probability that the PDU session2 is in the active state is 40%, and the PDU session3 is in the The probability of activation is 60%, the probability that PDU session4 is active is 70%, and the probability that PDU session5 is active is 30%. If the PDU session with probability greater than or equal to 50% is determined as the PDU session corresponding to the location area. According to the mobility statistics, the PDU session corresponding to the location area A can be determined as: PDU session 1, PDU session 3, and PDU session 4.
  • the control plane node identifies the terminal device from the location information of the terminal device included in the indication message.
  • the PDU session 1, the PDU session 3, and the PDU session 4 are determined to be the PDU session to be activated according to the corresponding relationship.
  • the activation related parameter of the terminal device includes an initial activation time of the at least one PDU session of the terminal device and an activation period
  • the control plane node determines an estimated activation time of the at least one PDU session according to the initial activation time of the at least one PDU session and the activation period. And determining, as the to-be-activated PDU session, the PDU session in which the time difference between the estimated activation time and the current time in the at least one PDU session is less than or equal to the first preset threshold.
  • the estimated activation time of the PDU session is the time after the current time and the activation time of the PDU session is different from the previous activation time.
  • the last activation time of the PDU session is the activation before the current time and adjacent to the current time. At the moment, the activation moment is the moment when the PDU session is activated.
  • the initial activation time of the PDU session is the time when the PDU session is activated for the first time
  • the activation period of the PDU session is the time interval between two adjacent activation moments of the PDU session.
  • the first preset threshold, the initial activation time of the PDU session, and the activation period may be set as needed, which is not limited in this embodiment of the present invention.
  • the time difference between the estimated activation time of the PDU session and the current time is less than or equal to the first preset threshold, it indicates that the PDU session is about to be activated within a short time after the current time, for example, the PDU session is activated in the current service request process;
  • the time difference between the estimated activation time of the PDU session and the current time is greater than the first preset threshold, it indicates that the PDU session will not be activated within a short time after the current time. For example, the PDU session will not be in the current service request process. Activate as the PDU session to be activated.
  • the activation related parameter in the mode 2 may be acquired by the control plane node from the SMF node that manages the PDU session, and is stored in the control plane node in advance corresponding to the terminal device.
  • the activation period of PDU session1 is 1 hour
  • the initial activation time of PDU session2 is 7:00 in the morning
  • the activation period of PDU session1 is 2 hours.
  • the current time is At 11:30
  • the first preset threshold is 30 minutes
  • the estimated activation time of the PDU session1 closest to the current time is 12:00
  • the time difference between the estimated activation time and the current time is 30 minutes, which is equal to the first preset threshold.
  • the estimated activation time of the PDU session2 closest to the current time is 13:00
  • the time difference between the estimated activation time and the current time is 1 hour and 30 minutes, which is greater than the first preset threshold. Therefore, the PDU session1 can be determined to be activated. PDU session.
  • the activation related parameter of the terminal device includes a fixed activation time of at least one PDU session of the terminal device, and the control plane node sets the PDU session in which the time difference between the fixed activation time and the current time in the at least one PDU session is less than or equal to the second preset threshold. Determined as the PDU session to be activated.
  • the fixed activation time of the PDU session may be: the PDU session is activated every time the activation time is reached, and the fixed activation time may be set as needed, which is not limited in the embodiment of the present invention.
  • the above fixed activation time is a fixed activation time after the current time.
  • the second preset threshold may be set as needed. The embodiment of the present invention does not limit this.
  • the PDU session is activated in the time. For example, the PDU session is activated in the current service request process.
  • the time difference between the fixed activation time of the PDU session and the current time is greater than the second preset threshold, it indicates that the current time is not short.
  • the PDU session is activated. For example, the PDU session is not activated as the PDU session to be activated in the current service request process.
  • the activation related parameter in the mode 3 may be acquired by the control plane node from the SMF node that manages the PDU session, and is stored in the control plane node in advance corresponding to the terminal device.
  • the fixed activation time of PDU session1 is 10:00 in the morning
  • the fixed activation time of PDU session2 is 11:00 in the morning
  • the current time is 9:30
  • the second preset threshold is 30 minutes
  • the fixed activation time of PDU session1 The time difference from the current time is 30 minutes, which is equal to the second preset threshold.
  • the time difference between the fixed activation time of the PDU session 2 and the current time is 1 hour and 30 minutes, which is greater than the second preset threshold. Therefore, the PDU session1 can be determined to be activated. PDU session.
  • the activation related parameter of the terminal device includes a correspondence between the PDU session of the terminal device and the associated PDU session, and the control plane node requests the terminal device to activate the PDU session according to the correspondence relationship and the PDU session requested by the terminal device to activate.
  • the corresponding associated PDU session is determined to be the PDU session to be activated.
  • the associated PDU session corresponding to the PDU session of the terminal device may be: a PDU session that is activated within a preset time after the PDU session of the terminal device is activated; the preset time may be performed as needed.
  • the comparison of the embodiments of the present invention is not limited.
  • the correspondence between the PDU session of the terminal device and the associated PDU session is the correspondence between the identifier of the PDU Session of the terminal device and the identifier of the associated PDU session.
  • the PDU session that the terminal device requests to activate may be represented by the identifier of the PDU session that the terminal device requests to activate.
  • the indication message sent by the AMF to the control plane node carries the identifier of the PDU session that the terminal device requests to activate.
  • the control plane node determines, according to the corresponding relationship and the identifier of the PDU session that the terminal device requests to activate, the associated PDU session of the PDU session that the terminal device requests to be activated as the PDU session to be activated, which may include: Corresponding relationship between the identifier of the PDU session of the terminal device and the identifier of the PDU session associated with the PDU session of the terminal device, determining the identifier of the associated PDU session corresponding to the identifier of the PDU session requested by the terminal device; the determined associated PDU session The PDU session identified by the identifier is determined to be the PDU session to be activated.
  • the ID of the PDU Session1 is PDU Session ID1
  • the ID of the PDU Session2 is PDU Session ID2
  • the PDU Session1 and the PDU Session2 are associated with each other
  • the correspondence between the PDU session1 and the PDU session2 is PDU Session ID1 and PDU Session ID2.
  • the AMF After receiving the PDU session ID1 requested by the terminal device, the AMF sends the PDU session ID1 to the control plane node; the control plane node determines the PDU Session ID2 according to the correspondence between the PDU session ID1, the PDU Session ID1 and the PDU Session ID2.
  • the PDU Session to be activated.
  • the correspondence between the PDU session of the terminal device and the associated PDU session is the correspondence between the DNN of the PDU Session of the terminal device and the DNN of the associated PDU session.
  • the PDU session that the terminal device requests to activate may be represented by the DNN of the PDU session that the terminal device requests to activate.
  • the indication message sent by the AMF to the control plane node carries the DNN of the PDU session that the terminal device requests to activate.
  • the control plane node determines, according to the corresponding relationship and the PDU session information that the terminal device requests to activate, the associated PDU session of the PDU session that the terminal device requests to activate as the PDU session to be activated, which may include: the control plane node according to the terminal Corresponding relationship between the DNN of the PDU session of the device and the DNN of the PDU session associated with the PDU session of the terminal device, determining the DNN of the associated PDU session corresponding to the DNN of the PDU session that the terminal device requests to activate; the DNN of the associated PDU session to be determined
  • the corresponding PDU session is determined to be the PDU session to be activated.
  • the control plane node stores the correspondence between the DNN and the PDU session.
  • the DNN corresponding to the PDU Session1 is DNN1
  • the DNN corresponding to the PDU Session2 is DNN2
  • the PDU Session1 and the PDU Session2 are associated with each other
  • the correspondence between the PDU session1 and the PDU session2 is the correspondence between the DNN1 and the DNN2.
  • the AMF After receiving the PDU session ID1 requested by the terminal device, the AMF determines that the DNN of the PDU session ID1 is DNN1, and sends the DNN1 to the control plane node; the control plane node according to the correspondence between DNN1, DNN1 and DNN2, PDU Session ID2 and DNN2 The corresponding relationship between the PDU Session ID2 is determined to be the PDU Session to be activated.
  • the correspondence between the PDU session of the terminal device and the associated PDU session is the correspondence between the NSSAI of the PDU Session of the terminal device and the NSSAI of the associated PDU session.
  • the PDU session that the terminal device requests to activate may be represented by the NSSAI of the PDU session that the terminal device requests to activate.
  • the indication message sent by the AMF to the control plane node carries the NSSAI of the PDU session that the terminal device requests to activate.
  • the control plane node determines, according to the corresponding relationship and the PDU session information that the terminal device requests to activate, the associated PDU session of the PDU session that the terminal device requests to activate as the PDU session to be activated, which may include: the control plane node according to the terminal Corresponding relationship between the NSSAI of the PDU session of the device and the NSSAI of the PDU session associated with the PDU session of the terminal device, determining the NSSAI of the associated PDU session corresponding to the NSSAI of the PDU session that the terminal device requests to activate; the NASSI of the associated PDU session to be determined The corresponding PDU session is determined to be the PDU session to be activated.
  • the control plane node stores the correspondence between the NASSI and the PDU session.
  • the correspondence between the PDU session1 and the PDU session2 is the correspondence between the NSSAI1 and the NSSAI2.
  • the AMF receives the PDU session ID1 requested by the terminal device, and determines the NSSAI1 corresponding to the PDU session ID1, and sends the NSSAI1 to the control plane node; the control plane node is based on the correspondence between the NSSAI1, the NSSAI1 and the NSSAI2, and between the PDU Session ID2 and the NSSAI2. Correspondence relationship, determine PDU Session ID2 as the PDU Session to be activated.
  • the correspondence between the PDU session of the terminal device and the associated PDU session is between the DNN and the NSSAI of the PDU Session of the terminal device, and the DNN and NSSAI of the PDU session associated with the PDU session of the terminal device.
  • the PDU session that the terminal device requests to activate may be represented by the DNN and the NSSAI of the PDU session that the terminal device requests to activate.
  • the indication message sent by the AMF to the control plane node carries the DNN and the NSSAI of the PDU session that the terminal device requests to activate.
  • the control plane node determines, according to the corresponding relationship and the information of the PDU session that the terminal device requests to activate, the associated PDU session of the PDU session that the terminal device requests to activate as the PDU session to be activated, and may include: the control plane node according to the Corresponding relationship, determining the DNN of the PDU session that the terminal device requests to activate and the DNN and NSSAI of the associated PDU session corresponding to the NSSAI; determining the determined DNN of the associated PDU session and the PDU session corresponding to the NASSI as the PDU session to be activated.
  • the control plane node stores the correspondence between the DNN and the NASSI and the PDU session.
  • NSSAI and DNN corresponding to PDU Session1 are (NSSAI1 and DNN1)
  • NSSAI and DNN corresponding to PDU Session2 are (NSSAI2 and DNN2)
  • PDU Session1 and PDU Session2 are associated with each other
  • the PDU session1 and PDU are associated with each other.
  • the correspondence between session2 is the correspondence between (NSSAI1 and DNN1) and (NSSAI2 and DNN2); the AMF receives the PDU session ID1 requested by the terminal device, and determines that the PDU session ID1 corresponds to NSSAI1 and DNN1, and will (NSSAI1 and DNN1) is sent to the control plane node; the control plane node according to the correspondence between (NSSAI1 and DNN1), (NSSAI1 and DNN1) and (NSSAI2 and DNN2), PDU Session ID2 and (NSSAI2 and DNN2), Determine PDU Session ID 2 as the PDU Session to be activated.
  • the service request message in step 602 includes a PDU session that the terminal device requests to activate, and in step 603, the indication information sent by the AMF node to the control plane node includes the terminal device requesting activation. ID of the PDU session.
  • the DNN of the activated PDU session may be requested by the terminal device, or the NSSAI of the activated PDU session requested by the terminal device, or the terminal device requests activation. The DNN and NSSAI of the PDU session to identify the PDU session that the terminal device requests to activate.
  • the identifier of the PDU session requested by the terminal device sent by the AMF node to the control plane node can be replaced with the DNN of the PDU session requested by the terminal device, or
  • the NSSAI of the PDU session that the terminal device requests to activate, or the DNN and NSSAI of the PDU session that the terminal device requests to activate, is not limited.
  • the activation related parameter in the mode 4 may be acquired by the control plane node from the SMF of the PDU session of the management terminal device or acquired from the AMF node, and stored in the control plane node in advance corresponding to the terminal device.
  • the associated PDU session of the PDU session1 of the terminal device is: PDU session2, PDU session3, and when the terminal device requests the activated PDU session to be the PDU session1, the PDU session2 and the PDU session3 are determined as the PDU session to be activated.
  • Step 605 The control plane node sends the identifier of the to-be-activated PDU session of the terminal device to the SMF node.
  • step 605 For the execution process of step 605, reference may be made to the related description of step 503, and details are not described herein again.
  • Step 606 The SMF node receives the identifier of the to-be-activated PDU session of the terminal device, and activates the to-be-activated PDU session according to the identifier of the to-be-activated PDU session.
  • step 606 For the execution process of step 606, reference may be made to the related description of step 504, and details are not described herein again.
  • step 601 may be performed at any step before step 604, and is not limited to the execution sequence shown in FIG. 6.
  • the control plane node sends the identifier of the PDU session of the terminal device to the SMF node in a manner that the control plane node directly sends the identifier of the to-be-activated PDU session of the terminal device to the SMF node.
  • the control plane node may send the identifier of the to-be-activated PDU session of the terminal device to the SMF node through the AMF node, for example, step 503 in the scheme shown in FIG. 5, and step 605 in the scheme shown in FIG. 6 may be replaced with the control plane.
  • the node sends the identifier of the to-be-activated PDU session of the terminal device to the AMF node.
  • Step 504 Step 606 can be replaced by: the AMF node receives the identifier of the to-be-activated PDU session of the terminal device from the control plane node, and the AMF node sends the terminal device to the SMF node.
  • the SMF node receives the identifier of the to-be-activated PDU session of the terminal device from the AMF node, and activates the to-be-activated PDU session according to the identifier of the to-be-activated PDU session.
  • the AMF node may report related parameters (such as the device type of the terminal device, the service type supported by the terminal device, the subscription data of the terminal device, and the terminal device reporting.
  • the AMF node receives the service request message sent by the terminal device, it sends the indication information to the control plane node.
  • the AMF node may directly send the identifier of the PDU session of the terminal device to be activated to the SMF node, and the AMF node does not need to pass the control plane node or The interaction between the PCF nodes obtains the identifier of the PDU session to be activated, thereby reducing the signaling overhead.
  • the implementation process of the feasible solution may refer to the solution shown in FIG. 7.
  • another method for activating a PDU session may include:
  • Step 701 The terminal device sends a service request message to the AMF node.
  • step 701 and the service request message may refer to step 501, and details are not described herein again.
  • Step 702 The AMF node receives the service request message sent by the terminal device, and sends the identifier of the PDU session of the terminal device to be activated to the SMF node according to the service request message.
  • the SMF node may be an SMF node that manages the PDU session to be activated.
  • the correspondence between the PDU session of the terminal device and the SMF node that manages the PDU session may be pre-stored in the AMF node.
  • the AMF node may be stored according to the Corresponding relationship, find the SMF node corresponding to the PDU session of the terminal device to be activated, and send the identifier of the PDU session to be activated to the SMF node.
  • the AMF node sending the identifier of the PDU session to be activated to the SMF node according to the service request message may be as follows:
  • the AMF node obtains the activation related parameter of the terminal device according to the service request message, determines the to-be-activated PDU session of the terminal device according to the activation related parameter, and sends the determined identifier of the to-be-activated PDU session to the SMF node.
  • the obtaining, by the AMF node, the activation related parameters of the terminal device according to the service request message may include:
  • the AMF node When the AMF node receives the service request message sent by the terminal device, the AMF node sends the identifier of the terminal device to the control plane node, and receives the activation related parameter of the terminal device sent by the control plane node, where the control plane node obtains the identifier according to the terminal device.
  • the control plane node For the manner of activating the related parameters of the terminal device, reference may be made to the foregoing description, and details are not described herein again.
  • connection established between the AMF node and the terminal device corresponds to the terminal device, and the terminal device sends a message or data to the AMF node through the corresponding connection, and the AMF node receives the service request sent by the terminal device. After the message, the terminal device that sent the service request message can be identified.
  • the service request message is used as a trigger condition for the AMF node to send an identifier of the PDU session to be activated.
  • the AMF node receives the service request message, the AMF node sends the identifier of the to-be-activated PDU session to the SMF node.
  • the AMF node can use the prior art to identify the message received from the terminal device as a service request message, and details are not described herein.
  • the service request message includes the identifier of the PDU session that the terminal device requests to activate.
  • the AMF node obtains the PDU session that the terminal device requests to activate from the service request message, and uses the PDU session that the terminal device requests to activate as the PDU session to be activated, to the SMF node. Send the ID of the PDU session to be activated.
  • the identifier that the foregoing AMF node sends the to-be-activated PDU session to the SMF node includes:
  • the AMF node sends an activation request message to the SMF node, where the activation request message includes an identifier of the PDU session of the terminal device to be activated, and the activation request message is used to request activation of the PDU session of the terminal device to be activated.
  • Step 703 The SMF node receives the identifier of the to-be-activated PDU session of the terminal device, and activates the to-be-activated PDU session according to the identifier of the to-be-activated PDU session.
  • step 703 The execution process of step 703 can be referred to step 504, and details are not described herein again.
  • the AMF node when the terminal device sends a service request message to the AMF node, that is, when the terminal device initiates a service request process, the AMF node sends the to-be-activated PDU session to the SMF node.
  • the PDU session which may be activated in the future, is activated, that is, a service request process is initiated to activate the PDU session to be activated in the future, and does not need to be activated only when the data corresponding to the PDU session needs to be sent, as in the prior art.
  • the PDU session causes the terminal device to initiate multiple PDU session activation processes.
  • the technical solution provided by the embodiment of the present invention reduces the number of times the terminal device initiates the PDU session activation process, and reduces signaling overhead.
  • the method further includes: the AMF node starts the prediction function of the AMF node according to the prediction function related information.
  • the AMF node may determine the PDU session to be activated of the terminal device according to the activation related parameter.
  • the method for activating a session may include:
  • Step 801 The AMF node starts the prediction function of the AMF node according to the second prediction function related information.
  • the second prediction function related information in the step 801 may include, but is not limited to, at least one of the following: the device type of the terminal device, the service type supported by the terminal device, the subscription data of the terminal device, and the request message reported by the terminal device. Whether the SMF node supports the information of the prediction function of the AMF node; wherein the request message is used to request the AMF node to enable the prediction function of the AMF node.
  • step 801 is an optional step, and the parameters mentioned above and the execution process of the step 801 can be referred to the related description in the embodiment shown in FIG. 6, and details are not described herein again.
  • Step 802 The terminal device sends a service request message to the AMF node.
  • step 802 For the execution process of the step 802 and the service request message, reference may be made to the related description of step 501, and details are not described herein again.
  • Step 803 The AMF node receives the service request message sent by the terminal device, obtains the activation related parameter according to the service request message, and determines the to-be-activated PDU session of the terminal device according to the activation related parameter.
  • the manner in which the AMF node obtains the activation related parameter according to the service request message is as described in step 702, and details are not described herein again.
  • the determining, by the AMF node, the to-be-activated PDU session of the terminal device according to the activation-related parameter may include:
  • the AMF node determines the PDU session to be activated of the terminal device by referring to the method 2-3 in the step 604, and details are not described herein again; or
  • the service request message includes a PDU session that the terminal device requests to activate.
  • the AMF node determines the PDU session to be activated by the terminal device according to the method 2-4 in the step 604, and details are not described herein again;
  • the service request message includes a PDU session that the terminal device requests to activate.
  • the solution shown in FIG. 8 further includes: the terminal device sends the location information of the terminal device to the AMF node, and the AMF node receives the location information of the terminal device sent by the terminal device, and the AMF node refers to The method 1-4 in the step 604 determines the PDU session to be activated of the terminal device, and details are not described herein again; or
  • the solution shown in FIG. 8 further includes: the terminal device sends the location information of the terminal device to the AMF node, the AMF node receives the location information of the terminal device sent by the terminal device, and the AMF node determines the standby of the terminal device by referring to the method 1-3 in step 604.
  • the PDU session is activated and will not be described here.
  • Step 804 The AMF node sends the identifier of the to-be-activated PDU session of the terminal device to the SMF node.
  • step 804 can refer to step 702, and details are not described herein again.
  • Step 805 The SMF node receives the identifier of the to-be-activated PDU session of the terminal device, and activates the to-be-activated PDU session according to the identifier of the to-be-activated PDU session.
  • step 805 can refer to step 504, and details are not described herein again.
  • the AMF node determines the to-be-activated PDU session of the terminal device, and sends an identifier of the to-be-activated PDU session to the SMF node to implement activation of the PDU session to be activated, and does not need to notify the NWDA of the indication information that the AMF node receives the service request message.
  • the node or the PCF node determines the PDU session of the terminal device to be activated by the NWDA node or the PCF node, which reduces the interaction process between the nodes and reduces the signaling overhead.
  • the PDU session of the terminal device to be activated may be directly determined by the terminal device, and the identifier of the PDU session to be activated is sent to the SMF node by the AMF node to activate the PDU session.
  • the implementation process of the feasible solution may refer to the solution shown in FIG. 9.
  • a method for activating a session includes:
  • Step 901 The terminal device starts the prediction function of the terminal device according to the third prediction function related parameter.
  • the third prediction function related parameter in the step 901 may include, but is not limited to, at least one of the following: a device type of the terminal device, a service type supported by the terminal device, subscription data of the terminal device, and a request message reported by the terminal device. .
  • step 901 is an optional step, and the parameters mentioned above and the execution process of the step 901 can be referred to the related description in the embodiment shown in FIG. 6, and details are not described herein again.
  • Step 902 The terminal device determines, according to the activation related parameter, the PDU session to be activated of the terminal device.
  • the activation related parameter may be obtained from a network entity function node through a registration process or a terminal device configuration update process
  • the network entity function node may be an AMF node, or an NWDA node, or a PCF. node.
  • the step 902 determines, according to the activation related parameter, the execution process of the to-be-activated PDU session of the terminal device.
  • the control plane node determines that the terminal device is to be activated according to the activation-related parameter.
  • the process of the PDU session, such as mode 1-4, is not described here; or,
  • Step 902 The terminal device determines, according to the activation related parameter, the execution process of the to-be-activated PDU session of the terminal device. Referring to the process in step 604, the control plane node determines the to-be-activated PDU session of the terminal device according to the activation-related parameter, as in the manners 1-3. No longer.
  • Step 903 The terminal device sends an identifier of the PDU session of the terminal device to be activated to the AMF node.
  • the terminal device may send a service request message to the AMF node, where the service request message is used to request to activate the PDU session of the terminal device, where the service request message includes an identifier of the PDU session that the terminal device requests to activate and a to-be-activated PDU of the terminal device.
  • the identifier of the session; or the service request message is used to request to convert the terminal device from the idle state to the connected state, and request to activate the PDU session of the terminal device, where the service request message includes the identifier of the PDU session and the terminal device requested by the terminal device to activate ID of the PDU session to be activated.
  • Step 904 The AMF node receives the identifier of the to-be-activated PDU session of the terminal device sent by the terminal device, and sends the identifier of the to-be-activated PDU session of the terminal device to the SMF node.
  • Step 905 The SMF node receives the to-be-activated PDU session of the terminal device from the AMF node, and activates the to-be-activated PDU session of the terminal device.
  • step 905 can refer to step 504, and details are not described herein again.
  • the AMF node may use some prediction related parameters (such as the device type of the terminal device, the service type supported by the terminal device, the subscription data of the terminal device, and the reported by the terminal device.
  • a request message requesting the AMF node to enable the prediction function of the AMF node, and at least one of the information of the SMF node supporting the prediction function of the AMF node) to enable the prediction function of the AMF node, so that the AMF node turns on the prediction function,
  • the AMF node After receiving the identifier of the PDU session sent by the terminal device, the AMF node sends the identifier of the PDU session to the SMF node.
  • the terminal device when the terminal device sends a service request message to the AMF node, that is, when the terminal device initiates a service request process, the terminal device determines the to-be-activated PDU session of the terminal device. And sending the identifier of the PDU session to be activated to the SMF node, and activating the PDU session that may be activated in the future, that is, initiating a service request process to activate the PDU session to be activated in the future, and does not need to be sent as needed in the prior art.
  • the PDU session is activated to activate the PDU session, and the terminal device initiates multiple PDU session activation processes.
  • the technical solution provided by the embodiment of the present invention reduces the number of times the terminal device initiates the PDU session activation process, and reduces signaling overhead.
  • the SMF node may also determine the to-be-activated PDU session of the terminal device and activate the to-be-activated PDU session.
  • the implementation process of the solution may refer to the solution shown in FIG.
  • another method for activating a session includes:
  • Step 1001 The SMF node starts the prediction function of the SMF node according to the fourth prediction function related parameter.
  • the fourth prediction function related parameter in the step 1001 may include, but is not limited to, at least one type of information: a device type of the terminal device, a service type supported by the terminal device, subscription data of the terminal device, and a request reported by the terminal device.
  • the request message of the prediction function of the SMF node is turned on, and whether the SMF node supports the prediction function of the SMF node.
  • step 1001 is an optional step, and the parameters mentioned above and the execution process of the step 1001 can be referred to the related description in the embodiment shown in FIG. 6, and details are not described herein again.
  • Step 1002 The terminal device sends a service request message to the AMF node.
  • step 1002 and the service request message refer to the related description of step 501, and details are not described herein again.
  • Step 1003 The AMF node receives a service request message sent by the terminal device, and sends the indication information to the SMF node according to the service request message.
  • the indication information is as described in the scenario 5, and details are not described herein again. And configured to instruct the AMF node to receive a service request message that is received and sent from the terminal device.
  • the indication information may include the identifier of the terminal device, so that the SMF node identifies the terminal device according to the identifier of the terminal device, and determines the to-be-activated PDU session of the terminal device by using the method 1-3 of the foregoing step 604; or
  • the indication information may include the identifier of the terminal device and the identifier of the PDU session that the terminal device requests to activate, so that the SMF node identifies the terminal device according to the identifier of the terminal device, and determines the terminal device to be activated by using the method 1-4 of the foregoing step 604. PDU session.
  • the AMF node sending the indication information to the SMF node according to the service request message may be in the following manner:
  • the service request message is used as a trigger condition for the AMF node to send the indication information. For example, when the AMF node receives the service request message, the AMF node sends the indication information to the SMF node.
  • the sending, by the AMF node, the indication information to the SMF node may include: sending the indication information to the SMF node by using the identifier of the PDU session that the terminal device requests to activate as part of the indication information or the indication information.
  • the sending, by the AMF node, the indication information to the SMF node may include: sending the indication information to the SMF node by using the PDU session that the terminal device requests to activate as part of the indication information or the indication information.
  • step 502 the manner in which the AMF node recognizes that the received message sent by the terminal device is a service request message and the terminal device is switched from the idle state to the connected state may be referred to in step 502, and details are not described herein.
  • the sending, by the AMF node, the indication information to the SMF node may be:
  • the AMF sends the indication information to all SMF nodes in the network where the AMF node is located; or
  • the AMF node sends the indication information to the SMF node corresponding to all the PDU sessions that do not have the data transmission service, for example, the AMF node may send the indication information to all the SMF nodes except the SMF node corresponding to the PDU session requesting the activation of the terminal device; or ,
  • the AMF node sends the indication information to the SMF node corresponding to the current PDU session that does not have the data transmission requirement. For example, the AMF node may send the indication information to some SMF nodes other than the SMF node corresponding to the PDU session requested by the terminal device.
  • the correspondence between the PDU session of the terminal device and the SMF node is pre-stored in the AMF node.
  • Step 1004 The SMF node receives the indication information from the AMF node, and activates the to-be-activated PDU session of the terminal device according to the indication information.
  • the process of activating the PDU session to be activated by the SMF node in step 1004 can be performed by referring to the solution shown in FIG. 5a, and details are not described herein again.
  • the SMF node activates the to-be-activated PDU session of the terminal device according to the indication information, and may adopt the following manner:
  • the SMF node obtains the activation related parameter of the terminal device according to the indication information, determines the to-be-activated PDU session of the terminal device according to the activation related parameter, and activates the determined PDU session to be activated.
  • the SMF node obtains the activation related parameter of the terminal device according to the indication information, and determining the to-be-activated PDU session of the terminal device according to the activation related parameter may include: the SMF node sends the terminal device to the control plane node. And determining, by using the mode 2-3 in step 604, the PDU session to be activated of the terminal device is determined by the receiving control node to obtain the activation related parameter of the terminal device according to the identifier of the terminal device.
  • the SMF node obtains the activation-related parameter of the terminal device according to the indication information, and determines the to-be-activated PDU session of the terminal device according to the activation-related parameter, which may include: SMF The node sends the identifier of the terminal device to the control plane node, and receives the activation related parameter of the terminal device obtained by the control plane node according to the identifier of the terminal device, and determines the to-be-activated PDU session of the terminal device by using the method 2-4 in step 604. ;
  • the SMF node obtains the activation related parameter of the terminal device according to the indication information, and determines that the terminal device is to be activated according to the activation related parameter.
  • the PDU session may include: the SMF node sends the identifier of the terminal device to the control plane node, and receives the activation related parameter of the terminal device obtained by the control plane node according to the identifier of the terminal device, and determines the terminal device to be activated by using the method 1-4 in step 604. PDU session.
  • the SMF node obtains the activation related parameter of the terminal device according to the indication information, and determining the to-be-activated PDU session of the terminal device according to the activation related parameter may include: the SMF node to the control plane node
  • the identifier of the terminal device is sent, and the activation-related parameter of the terminal device obtained by the control plane node according to the identifier of the terminal device is determined by using the method 1-3 in step 604 to determine the PDU session to be activated of the terminal device.
  • control plane node obtains the activation-related parameters of the terminal device according to the identifier of the terminal device, refer to the description in the solution in FIG. 5, and details are not described herein again.
  • Manner 2 The foregoing indication information is used as a trigger condition for the SMF node to determine the to-be-activated PDU session of the terminal device. For example, when the SMF node determines to receive the indication information, determine the PDU session of the terminal device to be activated, and activate the determined to be activated. PDU session.
  • the foregoing SMF node determines that the to-be-activated PDU session of the terminal device includes: determining, by the SMF node, the to-be-activated PDU session of the activated terminal device according to the activation-related parameter.
  • the activation related parameter may be acquired by the SMF node in real time from the NWDA node or the PCF node, or periodically subscribed.
  • the SMF node determines the execution process of the to-be-activated PDU session of the terminal device according to the activation-related parameter. For example, the method 2-3 is omitted, and details are not described herein again.
  • the SMF node obtains the PDU session that the terminal device requests to activate from the indication information, and uses the PDU session that the terminal device requests to activate as the PDU session to be activated, and activates the to-be-activated PDU session.
  • step 1001 may be performed at any step before step 1004, and is not limited to the execution sequence shown in FIG.
  • the SMF determines the to-be-activated PDU session of the terminal device, and Activate the PDU session to be activated, activate, that is, initiate a service request process to activate a PDU session that may be activated in the future, and do not need to activate the PDU only when the data corresponding to the PDU session needs to be sent, as in the prior art.
  • the session causes the terminal device to initiate multiple PDU session activation processes.
  • the technical solution provided by the embodiment of the present invention reduces the number of times the terminal device initiates the PDU session activation process, and reduces signaling overhead.
  • the AMF node may be configured according to some prediction related parameters (such as the device type of the terminal device, the service type supported by the terminal device, the subscription data of the terminal device, and the terminal device reporting the request for the AMF node.
  • each node such as a control plane node (NWDA node or PCF node), an AMF node, an SMF node, and a terminal device, in order to implement the above functions, includes hardware structures and/or software modules corresponding to each function.
  • NWDA node or PCF node control plane node
  • AMF node AMF node
  • SMF node SMF node
  • terminal device a terminal device
  • the present invention can be implemented in a combination of hardware or hardware and computer software in combination with the algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.
  • the embodiment of the present invention may divide the functional modules of the control plane node (NWDA node or PCF node), the AMF node, the SMF node, and the terminal device according to the foregoing method.
  • each function module may be divided according to each function, or two functional modules may be divided.
  • One or more functions are integrated into one processing module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the module in the embodiment of the present invention is schematic, and is only a logical function division, and the actual implementation may have another division manner.
  • FIG. 11 shows a possible composition diagram of the control plane node.
  • the control plane node may be the NWDA node mentioned above and in the embodiment.
  • the PCF node may include: a receiving unit 110, a sending unit 111, a processing unit 112, and an opening unit 113;
  • the receiving unit 110 is configured to support the control plane node to perform step 503 shown in FIG. 5 and step 603 in FIG. 6.
  • the sending unit 111 is configured to support the control plane node to perform step 503 in FIG. 5 and step 605 in FIG. 6.
  • the processing unit 112 is configured to support the control plane node to perform step 604 shown in FIG. 6.
  • the opening unit 113 is configured to support the control plane node to perform step 601 shown in FIG. 6.
  • the controller provided by the embodiment of the present invention is configured to execute the foregoing method for activating a session, so that the same effect as the method for activating the session described above can be achieved.
  • Fig. 12 shows a device which exists in the form of a chip for performing the actions performed by the control plane node in the above embodiment.
  • the apparatus may include a processing module 120 and a communication module 121.
  • the processing module 120 is for controlling management of the actions of the device.
  • the processing module 120 is configured to support the device to perform step 601, step 604, and/or other processes for the techniques described herein in FIG.
  • Communication module 121 is used to support communication of the device with other network entities, such as with the functional modules or network entities illustrated in FIG.
  • the apparatus can also include a storage module 122 for storing program code and data.
  • the processing module 120 can be a processor or a controller. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor can also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication module 121 can be a transceiver, a transceiver circuit, a communication interface, or the like.
  • the storage module 122 can be a memory.
  • the device may be the control plane node shown in FIG.
  • FIG. 13 shows a possible composition diagram of an AMF node.
  • the AMF node may include: a receiving unit 130, a sending unit 131, and a processing unit. 132, the opening unit 133;
  • the receiving unit 130 is configured to support the AMF node to perform step 502, step 5042, step 5045, step 603, step 702, step 802, step 904, and step 1003.
  • the sending unit 131 is configured to support the AMF node to perform step 502, step 5052, step 5042, step 5045, step 603, step 702, step 804, step 904, and step 1003.
  • the processing unit 132 is configured to support the AMF node to perform step 803.
  • the opening unit 133 is configured to support the AMF node to perform step 801.
  • the controller provided by the embodiment of the present invention is configured to execute the foregoing method for activating a session, so that the same effect as the method for activating the session described above can be achieved.
  • Fig. 14 shows a device which exists in a chip form for performing the actions of the AMF node in the above embodiment.
  • the apparatus may include a processing module 140 and a communication module 141.
  • the processing module 140 is configured to perform control management on the action of the device.
  • the processing module 140 is configured to support the device to perform step 801 and step 803.
  • Communication module 141 is used to support communication of the device with other network entities, such as communication with the functional modules or network entities illustrated in FIG.
  • the apparatus can also include a storage module 142 for storing program code and data.
  • the processing module 140 can be a processor or a controller. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor can also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication module 141 can be a transceiver, a transceiver circuit, a communication interface, or the like.
  • the storage module 142 can be a memory.
  • FIG. 15 is a schematic diagram showing a possible configuration of the terminal device.
  • the terminal device may include: a determining unit 150, a sending unit 151, and an opening unit. 152, the obtaining unit 153;
  • the determining unit 150 is configured to support the terminal device to perform step 902.
  • the sending unit 151 is configured to support the terminal device to perform step 501, step 602, step 701, step 802, step 903, and step 1002.
  • the opening unit 152 is configured to support the terminal device to perform step 901.
  • the obtaining unit 153 is configured to support the terminal device to acquire an activation related parameter.
  • the controller provided by the embodiment of the present invention is configured to execute the foregoing method for activating a session, so that the same effect as the method for activating the session described above can be achieved.
  • Fig. 16 shows a device which exists in the form of a chip for performing the actions of the terminal device in the above embodiment.
  • the apparatus may include a processing module 160 and a communication module 161.
  • the processing module 160 is configured to control manage the actions of the device.
  • the processing module 160 is configured to support the device to perform steps 901, 902, and/or other processes for the techniques described herein.
  • Communication module 161 is used to support communication of the device with other network entities, such as communication with the functional modules or network entities illustrated in FIG.
  • the apparatus can also include a storage module 162 for storing program code and data of the terminal device.
  • the processing module 160 can be a processor or a controller. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor can also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication module 161 can be a transceiver, a transceiver circuit, a communication interface, or the like.
  • the storage module 162 can be a memory.
  • the processing module 160 is a processor
  • the communication module 161 is a communication interface
  • the storage module 162 is a memory
  • the device involved in the embodiment of the present invention may be the terminal device shown in FIG.
  • FIG. 17 shows a possible composition diagram of the SMF node.
  • the SMF node may be the NWDA node or PCF involved in the above embodiment and the embodiment.
  • the node may include: a receiving unit 170, an activation unit 171, a determining unit 172, an opening unit 173, and a sending unit 174;
  • the receiving unit 170 is configured to support the SMF node to perform step 504, step 5045, step 605, step 703, step 805, and step 905.
  • the activation unit 171 is configured to support the SMF node to perform step 504, step 606, step 703, step 805, step 905, and step 1004.
  • the determining unit 172 is configured to support the SMF node to perform the step of determining the to-be-activated PDU session of the terminal device according to the activation related parameter.
  • the opening unit 173 is configured to support the SMF node to perform step 1001.
  • the sending unit 174 is configured to support the SMF node to perform step 5041, step 5046, and step 5048.
  • the controller provided by the embodiment of the present invention is configured to execute the foregoing method for activating a session, so that the same effect as the method for activating the session described above can be achieved.
  • Fig. 18 shows a device which exists in the form of a chip for performing the actions of the SMF node involved in the above embodiment.
  • the SMF node may include a processing module 180 and a communication module 181.
  • the processing module 180 is configured to perform control management on the action of the device.
  • the processing module 180 is configured to support the device to perform a step of determining a PDU session of the terminal device to be activated, a step of enabling a prediction function of the terminal device, and/or for Other processes of the techniques described herein.
  • Communication module 181 is used to support communication of the device with other network entities, such as with the functional modules or network entities illustrated in FIG.
  • the apparatus can also include a storage module 182 for storing program code and data for the SMF node.
  • the processing module 180 can be a processor or a controller. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor can also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication module 181 can be a transceiver, a transceiver circuit, a communication interface, or the like.
  • the storage module 182 can be a memory.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division.
  • there may be another division manner for example, multiple units or components may be used.
  • the combination may be integrated into another device, or some features may be ignored or not performed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may be one physical unit or multiple physical units, that is, may be located in one place, or may be distributed to multiple different places. . Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a readable storage medium.
  • the technical solution of the embodiments of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a device (which may be a microcontroller, chip, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本发明实施例公开了一种激活session的方法、设备及系统，涉及通信技术领域，解决了现有激活PDU session时信令开销比较大的问题。该方法包括：控制面节点从AMF节点接收指示信息，该指示信息用于指示AMF节点接收到终端设备发送的服务请求消息；控制面节点根据指示信息，向SMF节点或者AMF节点发送终端设备的待激活PDU session的标识。本发明实施例用于激活PDU session的过程。

Description

一种激活session的方法、设备及系统
本申请要求于2017年07月28日提交中国专利局、申请号为201710633686.1、申请名称为“一种激活session的方法、设备及系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明实施例涉及通信技术领域，尤其涉及一种激活会话(session)的方法、设备及系统。
背景技术
第五代(5th-generation，5G)移动通信系统是目前最为先进的移动通信技术网络，它能够为移动用户提供超级容量的带宽速率和更安全的通信。5G系统主要由核心网、无线网以及用户设备(user equipment，UE)等设备构成。
在5G系统中，不同设备间主要通过session来传输业务数据，如：UE可以与网络设备间通过协议数据单元(protocol data unit，PDU)session来传输业务数据。通常情况下，UE与网络设备间建立PDU session，建立的PDU session处于未激活(inactive)状态，当UE与网络设备间有业务数据传输时，激活该PDU session。其中，在5G系统中可以采用图1所示的信令交互流程来激活PDU session以传输业务数据。如图1所示，UE通过无线接入网(radio access network，RAN)向接入和移动性管理功能节点(access and mobility management function，AMF)节点发送服务请求(service request)消息以请求激活PDU session，AMF节点接收到该服务请求消息后通知会话管理功能(session management function，SMF)节点激活相应的PDU session，以便UE通过该PDU session向用户面功能(user plane function，UPF)节点传输上行数据。
但是，在5G系统的多切片多公用数据网(public data network，PDN)会话(multiple slices multiple PDN sessions)应用场景下，UE和网络设备间可以存在多个处于inactive状态的PDU sessions，UE分别为每个PDU session发起PDU session激活流程，信令开销大。
发明内容
本发明实施例提供一种激活session的方法、设备及系统，解决了现有激活PDU session时信令开销较大的问题。
为达到上述目的，本发明实施例采用如下技术方案：
一方面，本发明实施例提供了一种激活session的方法，包括：
控制面节点从AMF节点接收指示信息，该指示信息用于指示AMF节点接收到终端设备发送的服务请求消息；控制面节点根据该指示信息，向SMF节点或者AMF节点发送终端设备的待激活PDU session的标识，以便SMF节点从控制面节点接收到待激活PDU session的标识或者从AMF节点接收到待激活PDU session的标识后，根据该待激活PDU session的标识激活该待激活PDU session。
其中，在发明实施例中，当终端设备触发服务请求流程时，向AMF节点发送服 务请求消息，该服务请求消息用于请求将终端设备从空闲态转换到连接态，或者用于请求激活终端设备的PDU session；终端设备处于空闲态是指：终端设备与AMF节点之间未建立非接入层(non-access stratum，NAS)信令连接；终端设备处于处于连接态可以指：终端设备与AMF节点之间已建立NAS信令连接。
待激活PDU session的标识用于标识终端设备的待激活PDU session，终端设备的待激活PDU session为即将被激活的PDU session。
与现有技术相比，本发明实施例提供的技术方案中，在终端设备与AMF节点间进行一次信息交互，即终端设备发起一次服务请求流程时，确定终端设备的待激活PDU session的标识，激活未来可能会被激活的PDU session，不需要如现有技术一样，只有当需要发送PDU session对应的数据时才去激活该PDU session，导致终端设备发起多次PDU session激活流程，本发明实施例提供的技术方案降低了终端设备发起PDU session激活流程的次数，减少了信令开销。
结合该方面，在一种可能的实现方式中，控制面节点根据指示信息，向SMF节点或者AMF节点发送终端设备的待激活PDU session的标识，可以包括：
控制面节点根据指示信息获得终端设备的激活相关参数，根据获得的激活相关参数确定终端设备的待激活PDU session，向SMF节点或者AMF节点发送确定出的待激活PDU session的标识。
其中，激活相关参数用于确定终端设备的待激活PDU sesson。
如此，控制面节点可以根据激活相关参数确定终端设备的待激活PDU session，不需要借助于其他设备的确定结果，减少了设备间相互交互带来的信令开销。
结合该可能的实现方式，在另一种可能的实现方式中，控制面节点根据激活相关参数确定终端设备的待激活PDU session具体可以包括但不限于下述几种实现方式：
(1)激活相关参数包括位置区域与终端设备的PDU session的对应关系，控制面节点根据终端设备当前所处位置区域以及对应关系，将终端设备当前所处位置区域对应的PDU session确定为待激活PDU session。
其中，上述对应关系中位置区域对应的终端设备的PDU session包含：终端设备位于该位置区域时，激活频率比较高(例如，激活频率高于预设门限，即经常被激活)的PDU session。
其中，位置区域可以是网络概念的区域，比如：小区(cell)、跟踪区(tracking area TA)、跟踪区列表(tracking area list，TAl)；也可以是地理位置，比如：海淀区、朝阳区；还可以为更细粒度的区域，如：海淀区中关村。
终端设备当前所处位置区域可以由控制面节点根据从AMF节点获取到的位置信息确定，如：控制面节点可以从AMF节点接收用于指示终端设备所处位置区域的位置信息，根据该位置信息确定终端设备当前所处位置区域。
可选的，方式(1)中的激活相关参数可以由控制面节点从管理终端设备的PDU session的SMF节点或AMF节点获取，或者由控制面节点根据从AMF节点获取到的移动性统计数据确定得到。
(2)激活相关参数可以包括终端设备的至少一个PDU session的初始激活时刻以及激活周期，控制面节点可以根据至少一个PDU session的初始激活时刻以及激活周 期确定至少一个PDU session的预估激活时刻，将至少一个PDU session中预估激活时刻与当前时刻的时间差小于或等于第一预设阈值的PDU session确定为待激活PDU session。
其中，上述PDU session的预估激活时刻为当前时刻之后、与PDU session的上一激活时刻相差一个激活周期的时刻，该PDU session的上一激活时刻为当前时刻之前、与当前时刻相邻的激活时刻，激活时刻为激活PDU session的时刻。
PDU session的初始激活时刻为第一次激活PDU session的时刻，PDU session的激活周期为PDU session的两个相邻激活时刻之间的时间间隔。
PDU session的初始激活时刻以及激活周期可以根据需要进行设置，本发明实施例对此不进行限定。第一预设阈值可以根据需要进行设置，本发明实施例对此不进行限定，当PDU session的预估激活时刻与当前时刻的时间差小于或等于第一预设阈值时，表示当前时刻之后短时间内会激活该PDU session，在本次服务请求流程中激活该PDU session；当PDU session的预估激活时刻与当前时刻的时间差大于第一预设阈值时，表示当前时刻之后短时间内不会才激活该PDU session，在本次服务请求流程中不将该PDU session作为待激活PDU session进行激活。
可选的，方式(2)中的激活相关参数可以由控制面节点从管理终端设备的PDU session的SMF获取。
(3)激活相关参数包括终端设备的至少一个PDU session的固定激活时刻，控制面节点将至少一个PDU session中固定激活时刻与当前时刻的时间差小于或等于第二预设阈值的PDU session确定为待激活PDU session。
其中，PDU session的固定激活时刻可以指：该PDU session每到该激活时刻就被激活，该固定激活时刻可以根据需要进行设置，本发明实施例对比不进行限定。可以理解的是，上述与当前时刻进行比较的固定激活时刻为当前时刻之后的固定激活时刻。
第二预设阈值可以根据需要进行设置，本发明实施例对此不进行限定，当PDU session的固定激活时刻与当前时刻的时间差小于或等于第二预设阈值时，表示当前时刻之后短时间内会激活该PDU session，在本次服务请求流程中激活该PDU session；当PDU session的固定激活时刻与当前时刻的时间差大于第二预设阈值时，表示当前时刻之后短时间内不会才激活该PDU session，在本次服务请求流程中不将该PDU session作为待激活PDU session进行激活。
可选的，方式(3)中的激活相关参数可以由控制面节点从管理终端设备的PDU session的SMF获取。
(4)激活相关参数包括终端设备的PDU session与关联PDU session之间的对应关系，控制面节点根据终端设备的PDU session与关联PDU session之间的对应关系、以及终端设备请求激活的PDU session，将终端设备请求激活的PDU session对应的关联PDU session确定为待激活PDU session。
其中，终端设备的PDU session与关联PDU session之间的对应关系中终端设备的PDU session对应的关联PDU session为：在终端设备的PDU session被激活后的预设时间内被激活的PDU session；预设时间可以根据需要进行设置，本发明实施例对比不进行限定。
需要说明的是，在方式(4)实现的过程中，服务请求消息包含终端设备请求激活的PDU session，AMF节点接收到该服务请求消息后，向控制面发送指示信息以及该PDU session的标识，例如，控制面节点从AMF节点接收指示信息的同时还接收终端设备请求激活的PDU session的标识。可选的，指示信息和终端设备请求激活的PDU session的标识可以携带在一条信令消息中，也可以分开携带在不同的信令消息中，本发明实施例对此不进行限定。
可选的，方式(4)中的激活相关参数可以由控制面节点从管理终端设备的PDU session的SMF获取或者从AMF节点获取。
如此，控制面节点可以根据终端设备的移动特性或者根据终端设备的PDU session的特性(如：PDU session的激活周期或固定激活时刻或PDU session之间的关联性)确定即将被激活的PDU session。
结合该方面或该方面的任一可能的实现方式，在另一种可能的实现方式中，所述方法还可以包括：控制面节点根据第一预测功能相关信息，开启控制面节点的预测功能；
其中，第一预测功能相关信息可以包括但不限于以下信息中的至少一种：终端设备的设备类型，终端设备支持的业务类型，终端设备的签约数据，终端设备上报的请求消息，SMF节点是否支持控制面节点的预测功能的信息，以及AMF节点是否支持控制面节点的预测功能的信息；其中，请求消息用于请求控制面节点开启控制面节点的预测功能。
其中，上述控制面节点的预测功能为控制面节点确定待激活PDU session的功能。
可选的，控制面节点可以从SMF节点或者AMF节点获取第一预测功能相关参数。
如此，控制面节点可以在参考一些信息后才开启控制面节点的预测功能，不需要控制面节点开机后就开启预测功能，在降低控制面节点功耗的同时还可以提高控制面节点预测的安全性。
结合该方面或该方面的任一可能的实现方式，在另一种可实现方式中，
本发明实施例所述控制面节点可以为网络数据分析功能(network data analytics，NWDA)节点，还可以为策略控制功能(policy control function，PCF)节点。
需要说明的是，当控制面节点为NWDA节点时，AMF节点与NWDA节点间的交互可以为：AMF节点直接与NWDA节点进行交互，还可以为AMF节点通过PCF节点与NWDA节点进行交互，即AMF节点先将信息发送至PCF节点，NWDA节点从PCF节点接收AMF节点发送的信息。
当控制面节点为PCF节点时，上述激活相关参数、第一预测功能相关信息可以由PCF节点从其他节点获取，该获取方式同NWDA节点获取激活相关参数、第一预测功能相关信息的方式相同，在此不再赘述；还可以由PCF节点从NWDA节点获取，如：在PCF节点根据激活相关参数确定终端设备的待激活PDU session之前，PCF节点可以从NWDA节点接收激活相关参数；在PCF节点根据第一预测功能相关信息开启PCF节点的预测功能之前，PCF节点可以从NWDA节点接收第一预测相关信息。
如此，在通信系统中可以由多种不同的控制面节点来实现本发明实施例提供的技术方案，提高了本方案执行的灵活性。
结合该方面或该方面的任一可能的实现方式，在另一种可能的实现方式中，控制面节点向SMF节点或者AMF节点发送终端设备的待激活PDU session的标识可以包括：
控制面节点向SMF节点发送激活请求消息，该激活请求消息包含待激活PDU session的标识，该激活请求消息用于请求SMF节点激活待激活PDU session；或者，
控制面节点向AMF节点发送响应消息，该响应消息包含待激活PDU session的标识，该响应消息用于指示AMF节点向SMF节点发送待激活PDU session的标识。
如此，控制面节点可以将待激活PDU session的标识携带在消息中发送至SMF节点或者AMF节点，提高了待激活PDU session的标识发送的安全性。
一方面，本发明实施例提供了一种控制面节点，包括：
接收单元，用于从AMF节点接收指示信息，该指示信息用于指示AMF节点接收到终端设备发送的服务请求消息；
处理单元，用于根据接收单元接收到的指示信息，通过发送单元向SMF节点或者AMF节点发送终端设备的待激活PDU session的标识，以便SMF节点从控制面节点接收到待激活PDU session的标识或者从AMF节点接收到待激活PDU session的标识后，根据该待激活PDU session的标识激活该待激活PDU session。
其中，控制面节点的具体实现方式可以参考上述方面或上述方面的可能的实现方式提供的激活session的方法中控制面节点的行为功能，在此不再赘述。因此，该方面提供的控制面节点可以达到与上述方面相同的有益效果。
一方面，本申请实施例提供了一种控制面节点，该控制面节点可以实现上述方法实施例中控制面节点所执行的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个上述功能相应的模块。
在一种可能的设计中，该控制面节点的结构中包括处理器和通信接口，该处理器被配置为支持该控制面节点执行上述方法中相应的功能。该通信接口用于支持该控制面节点与其他网元之间的通信。该控制面节点还可以包括存储器，该存储器用于与处理器耦合，其保存该控制面节点必要的程序指令和数据。
一方面，本申请实施例提供了一种计算机存储介质，用于储存为上述控制面节点所用的计算机软件指令，该计算机软件指令包含用于执行上述方面所述方案的程序。
一方面，本申请实施例提供了一种计算机程序产品，该程序产品储存有上述控制面节点所用的计算机软件指令，该计算机软件指令包含用于执行上述方面所述方案的程序。
一方面，本申请实施例提供了一种装置，该装置以芯片的产品形态存在，该装置的结构中包括处理器和存储器，该存储器用于与处理器耦合，保存该装置必要的程序指令和数据，该处理器用于执行存储器中存储的程序指令，使得该装置执行上述方法中控制面节点的功能。
又一方面，本发明实施例提供一种激活session的方法，可以包括：
AMF节点接收终端设备发送的服务请求消息；
AMF节点根据服务请求消息，向控制面节点发送指示信息，该指示信息用于指示AMF节点接收到终端设备发送的服务请求消息，以便控制面节点根据该指示信息向 AMF节点或者SMF节点发送终端设备的待激活PDU session的标识。
其中，该服务请求消息用于请求将终端设备从空闲态转换到连接态，当AMF节点接收到终端设备发送的服务请求消息时，预示着终端设备发起服务请求流程，通过该服务请求流程实现终端设备从空闲态到连接态的转换；或者，
该服务请求消息用于请求激活终端设备的某个PDU session，当AMF节点接收到终端设备发送的服务请求消息时，预示着终端设备发起服务请求流程，通过该服务请求流程实现激活终端设备的某个PDU session。
与现有技术相比，本发明实施例提供的技术方案中，当终端设备发起服务请求流程时，AMF节点向控制面节点发送指示信息，该指示信息用于指示AMF节点接收到终端设备发送的服务请求消息的指示信息，以便控制面节点向其他节点发送终端设备的待激活PDU session的标识，使得其他节点根据待激活PDU session的标识激活待激活PDU session，实现了在终端设备发起的一次服务请求流程中激活未来需要激活的PDU session，不需要如现有技术一样，只有当需要发送PDU session对应的数据时才去激活该PDU session，导致终端设备发起多次PDU session激活流程，本发明实施例提供的技术方案降低了终端设备发起PDU session激活流程的次数，减少了信令开销。
结合该方面，在一种可能的实现方式中，当终端设备请求激活某个PDU session时，服务请求消息可以包含终端设备请求激活的PDU session的标识；所述方法还包括：
AMF节点向控制面节点发送终端设备请求激活的PDU session的标识，以便控制面节点向SMF节点发送终端设备请求激活的PDU session的标识，使得SMF节点根据终端设备请求激活的PDU session的标识激活该PDU session；或者，
AMF根据终端设备请求激活的PDU session的标识确定终端设备请求激活的PDU session的DNN，并向控制面节点发送终端设备请求激活的PDU session的DNN；或者，
AMF节点根据终端设备请求激活的PDU session的标识确定终端设备请求激活的PDU session的NSSAI，并向控制面节点发送终端设备请求激活的PDU session的NSSAI；或者，
AMF节点根据终端设备请求激活的PDU session的标识确定终端设备请求激活的PDU session的DNN和NSSAI，并向控制面节点发送终端设备请求激活的PDU session的NSSAI和DNN。
需要说明的是，在本发明各实施例中，AMF节点可以通过接入网节点接收终端设备发送的服务请求消息，例如，接入网节点通过无线资源控制(radio resource control，RRC)信令接收到终端设备发送的服务请求消息，接入网节点再通过N2接口信令将服务请求消息发送给AMF节点，当AMF节点接收到该N2接口信令后，通过解封装处理获取到终端设备请求激活的PDU session的标识，再将该PDU session的标识经过封装处理发送至控制面节点。
如此，可以通过终端设备发起的服务请求流程激活终端设备请求激活的PDU session。
结合该方面或该方面的任一可能的实现方式，在又一种可能的实现方式中，所述方法还可以包括：
AMF节点从控制面节点接收终端设备的待激活PDU session的标识；
AMF节点向SMF节点发送激活请求消息，其中，激活请求消息包含终端设备的待激活PDU session的标识，激活请求消息用于请求SMF节点激活待激活PDU session。
需要说明的是，当服务请求消息包含终端设备请求激活的PDU session，且激活终端设备请求的PDU session和激活终端设备的待激活PDU session的SMF节点为同一SMF节点时，AMF节点向SMF节点发送激活请求消息中还包含终端设备请求激活的PDU session的标识；当服务请求消息包含终端设备请求激活的PDU session，且激活终端设备请求的PDU session和激活终端设备的待激活PDU session的SMF节点为不同SMF节点(如：激活终端设备请求的PDU session为SMF节点是SMF节点1、激活终端设备的待激活PDU session的SMF节点为SMF节点2)时，AMF节点向SMF节点2发送包含终端设备的待激活PDU session的标识的激活请求消息的同时，AMF节点还需要向SMF节点1发送包含终端设备请求激活的PDU session的标识的激活请求消息。
如此，AMF节点可以将接收到的待激活PDU session的标识发送至SMF节点，以便SMF节点根据该标识激活PDU session。
根据该方面或该方面的任一可能的实现方式，在另一种可能的实现方式中，
控制面节点可以为NWDA节点或者PCF节点。
如此，AMF节点可以接收不同节点发送的待激活PDU session的标识，提高了本方案实施的灵活性。
又一方面，本发明实施例提供了一种AMF节点，包括：
接收单元，用于接收终端设备发送的服务请求消息；
发送单元，用于根据该服务请求消息，向控制面节点发送指示信息，该指示信息用于指示AMF节点接收到终端设备发送的服务请求消息，以便控制面节点接收到该指示信息后，根据该指示信息向AMF节点或者SMF节点发送终端设备的待激活PDU session的标识。
其中，AMF节点的具体实现方式可以参考上述方面或上述方面的可能的实现方式提供的激活session的方法中AMF节点的行为功能，在此不再赘述。因此，该方面提供的AMF节点可以达到与上述方面相同的有益效果。
又一方面，本申请实施例提供了一种AMF节点，该AMF节点可以实现上述方法实施例中AMF节点所执行的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个上述功能相应的模块。
在一种可能的设计中，该AMF节点的结构中包括处理器和通信接口，该处理器被配置为支持该AMF节点执行上述方法中相应的功能。该通信接口用于支持该AMF节点与其他网元之间的通信。该AMF节点还可以包括存储器，该存储器用于与处理器耦合，其保存该AMF节点必要的程序指令和数据。
又一方面，本申请实施例提供了一种计算机存储介质，用于储存为上述AMF节点所用的计算机软件指令，该计算机软件指令包含用于执行上述方面所述方案的程序。
又一方面，本申请实施例提供了一种计算机程序产品，该程序产品储存有上述AMF节点所用的计算机软件指令，该计算机软件指令包含用于执行上述方面所述方案 的程序。
又一方面，本申请实施例提供了一种装置，该装置以芯片的产品形态存在，该装置的结构中包括处理器和存储器，该存储器用于与处理器耦合，保存该装置必要的程序指令和数据，该处理器用于执行存储器中存储的程序指令，使得该装置执行上述方法中AMF节点的功能。
再一方面，本发明实施例提供了一种激活session的方法，可以包括：
AMF节点接收终端设备发送的服务请求消息；
AMF节点根据服务请求消息，向SMF节点发送终端设备的待激活PDU session的标识，以便SMF节点根据该待激活PDU session的标识激活该待激活PDU session。
其中，服务请求消息用于请求将终端设备从空闲态转换到连接态，或者激活终端设备的某个PDU session，当AMF接收到终端设备发送的服务请求消息时，预示着终端设备发起了用于实现将终端设备从空闲态转换到连接态或者激活终端设备的某个PDU session的服务请求流程。
待激活PDU session的标识用于标识终端设备的待激活PDU session，待激活PDU session为即将被激活的终端设备的PDU session。
与现有技术相比，本发明实施例提供的技术方案中，在终端设备与AMF节点的一次信息交互时，即终端设备发起一次服务请求流程时，确定终端设备的待激活PDU session的标识，激活未来可能会被激活的PDU session，不需要如现有技术一样，只有当需要发送PDU session对应的数据时才去激活该PDU session，导致终端设备发起多次PDU session激活流程，本发明实施例提供的技术方案降低了终端设备发起PDU session激活流程的次数，减少了信令开销。
结合该方面，在一种可能的实现方式中，AMF节点根据服务请求消息，向SMF节点发送终端设备的待激活PDU session的标识，包括：
AMF节点根据服务请求消息获得终端设备的激活相关参数；
AMF节点根据激活相关参数确定终端设备的待激活PDU session，向SMF节点发送待激活PDU session的标识。
其中，该激活相关参数可以由AMF节点从NWDA节点获取，或者AMF节点从PCF节点获取。
如此，控制面节点可以根据激活相关参数确定终端设备的待激活PDU session，不需要借助于其他设备的有关待激活PDU session的确定结果，减少了设备间相互交互带来的信令开销。
结合该可能的实现方式，在另一种可能的实现方式中，
AMF节点根据激活相关参数确定终端设备的待激活PDU session的方式的执行过程可参照控制面节点根据激活相关参数确定终端设备的待激活PDU session的方式，在此不再赘述。
如此，AMF节点可以根据终端设备的移动特性或者根据终端设备的PDU session的特性(如：PDU session的激活周期或固定激活时刻或PDU session之间的关联性)确定即将被激活的PDU session。
结合该方面或该方面的任一可能的实现方式，在另一种可能的实现方式中，所述 方法还可以包括：AMF节点根据第二预测功能相关信息，开启AMF节点的预测功能；
其中，第二预测功能相关信息包括但不限于以下信息中的至少一种：终端设备的设备类型，终端设备支持的业务类型，终端设备的签约数据，终端设备上报的请求消息，以及AMF节点是否支持控制面节点的预测功能的信息；请求消息用于请求AMF节点开启AMF节点的预测功能。
AMF节点的预测功能可以为：AMF节点确定终端设备的待激活PDU session的功能。
如此，AMF节点可以在参考一些信息后才开启AMF节点的预测功能，不需要AMF节点节点开机后就开启预测功能，在降低AMF节点功耗的同时还可以提高AMF节点预测的安全性。
结合该方面或该方面的任一可能的实现方式，在另一种可能的实现方式中，服务请求消息包含终端设备请求激活的PDU session的标识；所述方法还可以包括：
AMF节点向SMF节点发送终端设备请求激活的PDU session的标识，以便SMF节点根据该PDU session的标识激活终端设备请求激活的PDU session。
如此，AMF节点可以向SMF节点发送终端设备请求激活的PDU session的标识，以及待激活PDU session的标识，以便SMF节点在激活终端设备请求激活的PDU session的同时激活待激活PDU session。
结合该方面可能的实现方式，在另一种可实现方式中，
AMF节点可以向SMF节点发送激活请求消息；
该激活请求消息包含终端设备请求激活的PDU session的标识、以及终端设备的待激活PDU session的标识，该激活请求消息用于请求SMF节点激活终端设备请求的PDU session以及终端设备的待激活PDU session。
需要说明的是，当激活终端设备请求的PDU session和激活终端设备的待激活PDU session的SMF节点为同一SMF节点时，AMF节点向同一SMF节点发送激活请求消息；当激活终端设备请求的PDU session和激活终端设备的待激活PDU session的SMF节点为不同SMF节点(如：激活终端设备请求的PDU session为SMF节点是SMF节点1、激活终端设备的待激活PDU session的SMF节点为SMF节点2)时，AMF节点向SMF节点2发送包含终端设备的待激活PDU session的标识的激活请求消息的同时，AMF节点还需要向SMF节点1发送包含终端设备请求激活的PDU session的标识的激活请求消息。
如此，AMF节点可以将终端设备请求激活的PDU session的标识、以及终端设备的待激活PDU session的标识封装在激活请求消息中发送至SMF节点，提高了标识发送的安全性。
结合该方面或该方面任一可能的实现方式，在另一种可实现方式中，所述方法还可以包括：
AMF节点从SMF节点接收第一会话消息，并向接入网节点发送该第一会话消息以及其他一些信息(如：安全上下文(security context)、切换限制列表(handover restriction list等信息)，以便接入网节点根据第一会话消息与终端设备建立RRC连接 重配置，以及根据其他一些信息建立终端设备与接入网节点之间的安全；
AMF节点从接入网节点接收第二会话消息，该第二会话消息包含：接入网信道信息(RAN N3 tunnel information)、被激活的PDU session可接受的QoS流列表(list of accepted QoS flows for the PDU Sessions activated)、以及被激活的PDU session拒绝接受的QoS流列表(list of rejected QoS flows for the PDU Sessions activated)；
AMF节点向SMF节点发送第二会话消息。
如此，通过AMF节点与SMF节点的信息交互来激活PDU session。
再一方面，本发明实施例提供了一种AMF节点，包括：
接收单元，用于接收终端设备发送的服务请求消息；
处理单元，用于根据接收单元接收到的服务请求消息，通过发送单元向SMF节点发送终端设备的待激活PDU session的标识，以便SMF节点根据该待激活PDU session的标识激活该待激活PDU session。
其中，AMF节点的具体实现方式可以参考上述再一方面或上述再一方面的可能的实现方式提供的激活session的方法中AMF节点的行为功能，在此不再赘述。因此，该方面提供的AMF节点可以达到与上述方面相同的有益效果。
再一方面，本申请实施例提供了一种AMF节点，该AMF节点可以实现上述再一方面所述的方法实施例中AMF节点所执行的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个上述功能相应的模块。
在一种可能的设计中，该AMF节点的结构中包括处理器和通信接口，该处理器被配置为支持该AMF节点执行上述方法中相应的功能。该通信接口用于支持该AMF节点与其他网元之间的通信。该AMF节点还可以包括存储器，该存储器用于与处理器耦合，其保存该AMF节点必要的程序指令和数据。
再一方面，本申请实施例提供了一种计算机存储介质，用于储存为上述AMF节点所用的计算机软件指令，该计算机软件指令包含用于执行上述再一方面所述方案的程序。
再一方面，本申请实施例提供了一种计算机程序产品，该程序产品储存有上述AMF节点所用的计算机软件指令，该计算机软件指令包含用于执行上述再一方面所述方案的程序。
再一方面，本申请实施例提供了一种装置，该装置以芯片的产品形态存在，该装置的结构中包括处理器和存储器，该存储器用于与处理器耦合，保存该装置必要的程序指令和数据，该处理器用于执行存储器中存储的程序指令，使得该装置执行上述再一方面所述方法中AMF节点的功能。
再一方面，本发明实施例提供一种激活session的方法，可以包括：
终端设备根据激活相关参数，确定激活终端设备的待激活PDU session；
终端设备向AMF节点发送终端设备的待激活PDU session的标识，以便AMF节点向SMF发送终端设备的待激活PDU session的标识，SMF节点根据该待激活PDU session的标识激活这些待激活PDU session。
与现有技术相比，本发明实施例提供的技术方案中，终端设备可以根据激活相关 参数，确定即将被激活的PDU session(即终端设备的待激活PDU session)，并向AMF节点发送待激活PDU session的标识，以便AMF节点将待激活PDU session发送至SMF节点，完成待激活PDU session的激活，如此，终端设备可以在与AMF节点的一次交互中告知AMF节点终端设备的待激活PDU session，激活未来可能会被激活的PDU session，不需要如现有技术一样，只有当需要发送PDU session对应的数据时才去激活该PDU session，导致终端设备发起多次PDU session激活流程，本发明实施例提供的技术方案降低了终端设备发起PDU session激活流程的次数，减少了信令开销。
结合该方面，在一种可能的实现方式中，
终端设备根据激活相关参数确定终端设备的待激活PDU session的方式的执行过程可参照控制面节点根据激活相关参数确定终端设备的待激活PDU session的方式，在此不再赘述。
如此，终端设备可以根据终端设备的移动特性或者根据终端设备的PDU session的特性(如：PDU session的激活周期或固定激活时刻或PDU session之间的关联性)确定即将被激活的PDU session。
结合该可能的实现方式，在又一种可能的实现方式中，
终端设备可以通过注册流程或者终端设备配置更新流程从网络实体功能节点获取激活相关参数；其中，网络实体功能节点为上述AMF节点、或NWDA节点、或策略控制功能PCF节点。
其中，注册流程或者终端设备配置更新流程可以参照现有技术，在此不再赘述。
如此，终端设备可以在从与其他节点间的常规交互中获取激活相关参数来确定终端设备的待激活PDU session，不需要终端设备临时通过与其他节点的新的信令交互来确定待激活的PDU sessions，减少了终端设备与其他节点之间的交互，降低了信令开销。
结合该方面或者该方面的任一可能的实现方式，在又一种可能的实现方式中，在终端设备根据激活相关参数，确定激活终端设备的待激活PDU session之前，所述方法还可以包括：终端设备根据第三预测功能相关信息，开启终端设备的预测功能；
其中，第三预测功能相关信息包括但不限于以下信息中的至少一种：终端设备的设备类型，终端设备支持的业务类型，以及终端设备的签约数据。
如此，终端设备可以在参考一些信息后才开启终端设备的预测功能，不需要终端设备开机后就开启预测功能，在降低终端设备功耗的同时还可以提高终端设备预测的安全性。
结合该方面或者该方面的任一可能的实现方式，在又一种可能的实现方式中，所述方法还可以包括；
终端设备触发服务请求流程，向AMF节点发送服务请求消息，该服务请求消息用于请求将终端设备从空闲态转换为连接态，或者该服务请求消息包含终端设备请求激活的PDU session的标识，该服务请求消息用于请求激活终端设备的某个PDU session。
其中，终端设备可以在下述情况下触发服务请求流程：1、终端设备需要与AMF节点间进行信令交互，从空闲态变为连接态；2、终端设备处于连接态，且终端设备的 某个PDU session上存在数据传输；3、终端设备需要与AMF节点间进行信令交互，从空闲态变为连接态，且终端设备的某个PDU session上存在数据传输。
再一方面，本发明实施例提供了一种终端设备，包括：
确定单元，用于根据激活相关参数，确定激活终端设备的待激活PDU session；
发送单元，用于向AMF节点发送确定单元确定出来的终端设备的待激活PDU session的标识，以便AMF节点向SMF发送终端设备的待激活PDU session的标识，SMF节点根据该待激活PDU session的标识激活这些待激活PDU session。
其中，终端设备的具体实现方式可以参考上述再一方面或上述再一方面的可能的实现方式提供的激活session的方法中终端设备的行为功能，在此不再赘述。因此，该方面提供的终端设备可以达到与上述方面相同的有益效果。
再一方面，本申请实施例提供了一种终端设备，该终端设备可以实现上述再一方面所述的方法实施例中终端设备所执行的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个上述功能相应的模块。
在一种可能的设计中，该终端设备的结构中包括处理器和通信接口，该处理器被配置为支持该终端设备执行上述方法中相应的功能。该通信接口用于支持该终端设备与其他网元之间的通信。该终端设备还可以包括存储器，该存储器用于与处理器耦合，其保存该终端设备必要的程序指令和数据。
再一方面，本申请实施例提供了一种计算机存储介质，用于储存为上述终端设备所用的计算机软件指令，该计算机软件指令包含用于执行上述再一方面所述方案的程序。
再一方面，本申请实施例提供了一种计算机程序产品，该程序产品储存有上述终端设备所用的计算机软件指令，该计算机软件指令包含用于执行上述再一方面所述方案的程序。
再一方面，本申请实施例提供了一种装置，该装置以芯片的产品形态存在，该装置的结构中包括处理器和存储器，该存储器用于与处理器耦合，保存该装置必要的程序指令和数据，该处理器用于执行存储器中存储的程序指令，使得该装置执行上述再一方面所述方法中终端设备的功能。
再一方面，本发明实施例提供一种激活session的方法，可以包括：
SMF节点从AMF节点接收指示信息，该指示信息用于指示AMF节点接收到终端设备发送的服务请求消息，SMF节点根据该指示信息，激活终端设备的待激活PDU session。
其中，待激活PDU session的标识用于标识终端设备的待激活PDU session，终端设备的待激活PDU session为即将被激活的PDU session。
与现有技术相比，本发明实施例提供的技术方案中，在终端设备与AMF节点间进行一次信息交互时，即终端设备发起一次服务请求流程时，激活未来可能会被激活的PDU session，不需要如现有技术一样，只有当需要发送PDU session对应的数据时才去激活该PDU session，导致终端设备发起多次PDU session激活流程，本发明实施例提供的技术方案降低了终端设备发起PDU session激活流程的次数，减少了信令开销。
结合该方面，在一种可能的实现方式中，根据该指示信息，激活终端设备的待激活PDU session，包括：
SMF节点根据指示信息获得终端设备的激活相关参数；
SMF节点根据激活相关参数确定终端设备的待激活PDU session，激活该待激活PDU session。
其中，激活相关参数可以由SMF节点从NWDA节点、或者PCF节点、或者AMF节点获取。
SMF节点根据激活相关参数确定终端设备的待激活PDU session的方式的执行过程可参照控制面节点根据激活相关参数确定终端设备的待激活PDU session的方式，在此不再赘述。
如此，SMF节点可以根据终端设备的移动特性或者根据终端设备的PDU session的特性(如：PDU session的激活周期或固定激活时刻或PDU session之间的关联性)确定即将被激活的PDU session。
结合该方面或该方面的任一可能的实现方式，在另一种可能的实现方式中，所述方法还可以包括：SMF节点根据第四预测功能相关信息，开启SMF节点的预测功能；
其中，第四预测功能相关信息可以包括但不限于以下信息中的至少一种：终端设备的设备类型，终端设备支持的业务类型，终端设备的签约数据，终端设备上报的请求消息，SMF节点是否支持SMF节点的预测功能的信息；其中，请求消息用于请求SMF节点开启SMF节点的预测功能。
其中，上述SMF节点的预测功能为SMF节点确定待激活PDU session的功能。
如此，SMF节点可以在参考一些信息后才开启SMF节点的预测功能，不需要SMF节点开机后就开启预测功能，在降低SMF节点功耗的同时还可以提高SMF节点预测的安全性。
结合该方面或该方面的任一可能的实现方式，在另一种可实现方式中，SMF节点激活终端设备的待激活PDU session的执行过程可参照现有SMF节点激活PDU session的过程，具体可以包括：SMF节点向AMF节点发送第一会话消息；
SMF节点从AMF节点接收第二会话消息；
SMF节点通过N11接口向AMF节点发送响应消息。
该第一会话消息包含待激活PDU session相关的一些信息，如：可以包含服务质量配置文件(QoS profile)和核心网信道信息(CN N3 tunnel information)，该CN N3 tunnel information用于接入网节点将该终端设备的数据正确地发送到对应的UPF节点；QoS profile包括了待激活PDU session的所有QoS流(flows)所对应的QoS参数信息，QoS profile用于接入网节点建立空口承载。
该第二会话消息包含：接入网信道信息(RAN N3 tunnel information)、被激活的PDU session可接受的QoS流列表(list of accepted QoS flows for the PDU Sessions activated)、以及被激活的PDU session拒绝接受的QoS流列表(list of rejected QoS flows for the PDU Sessions activated)，该RAN N3 tunnel information用于UPF节点将该终端设备的数据正确地发送到对应的接入网节点。
可选的，SMF节点可以通过N11接口向AMF节点发送第一会话消息、以及通过 N11接口从AMF节点接收第二会话消息。
如此，通过SMF节点与AMF节点的信息交互来激活PDU session。
结合该可能的实现方式，在另一种可实现方式中，当本发明实施例提供的技术方案部署了动态策略控制和计费(policy control and charging，PCC)策略时，所述方法还可以包括：
SMF节点发起提供因特网协议连接的接入网络会话建立流程(internet protocol-connectivity access network session establishment，IP-CAN Session Establishment)；
SMF节点将第二会话消息中RAN N3 tunnel information配置到UPF节点上，该RAN N3 tunnel information用于UPF节点将该终端设备的数据正确地发送到对应的接入网节点。
可选的，SMF节点发起IP-CAN Session Establishment的过程可参照现有技术(如：SMF节点上报终端设备的位置给PCF节点)，在此不再详述。
如此，SMF节点可以通过与UPF节点的交互来执行PCC策略。
再一方面，本发明实施例提供了一种SMF节点，包括：
接收单元，用于从AMF节点接收指示信息，该指示信息用于指示AMF节点接收到终端设备发送的服务请求消息；
激活单元，用于根据接收单元接收到的指示信息，激活终端设备的待激活PDU session。
其中，SMF节点的具体实现方式可以参考上述再一方面或上述再一方面的可能的实现方式提供的激活session的方法中SMF节点的行为功能，在此不再赘述。因此，该方面提供的SMF节点可以达到与上述方面相同的有益效果。
再一方面，本申请实施例提供了一种SMF节点，该SMF节点可以实现上述再一方面所述的方法实施例中SMF节点所执行的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个上述功能相应的模块。
在一种可能的设计中，该SMF节点的结构中包括处理器和通信接口，该处理器被配置为支持该SMF节点执行上述方法中相应的功能。该通信接口用于支持该SMF节点与其他网元之间的通信。该SMF节点还可以包括存储器，该存储器用于与处理器耦合，其保存该SMF节点必要的程序指令和数据。
再一方面，本申请实施例提供了一种计算机存储介质，用于储存为上述SMF节点所用的计算机软件指令，该计算机软件指令包含用于执行上述再一方面所述方案的程序。
再一方面，本申请实施例提供了一种计算机程序产品，该程序产品储存有上述SMF节点所用的计算机软件指令，该计算机软件指令包含用于执行上述再一方面所述方案的程序。
再一方面，本申请实施例提供了一种装置，该装置以芯片的产品形态存在，该装置的结构中包括处理器和存储器，该存储器用于与处理器耦合，保存该装置必要的程序指令和数据，该处理器用于执行存储器中存储的程序指令，使得该装置执行上述再一方面所述方法中SMF节点的功能。
再一方面，本发明实施例提供一种激活session的方法，可以包括：
SMF节点从AMF节点或者控制面节点接收终端设备的待激活PDU session的标识，该待激活PDU session的标识由控制面节点根据从AMF节点接收的指示信息确定，该指示信息用于指示AMF节点接收到终端设备发送的服务请求消息；
SMF节点根据该待激活PDU session的标识激活该PDU session。
其中，AMF节点接收终端设备发送的服务请求消息预示着：终端设备向AMF节点发起服务请求流程；待激活PDU session的标识用于标识终端设备的待激活PDU session，终端设备的待激活PDU session为即将被激活的PDU session。
与现有技术相比，本发明实施例提供的技术方案中，在终端设备向AMF节点发起一次服务请求流程时，激活未来可能会被激活的PDU session，不需要如现有技术一样，只有当需要发送PDU session对应的数据时才去激活该PDU session，导致终端设备发起多次PDU session激活流程，本发明实施例提供的技术方案降低了终端设备发起PDU session激活流程的次数，减少了信令开销。
结合该方面或该方面的任一可能的实现方式，在另一种可实现方式中，SMF节点激活终端设备的待激活PDU session的执行过程可参照上述方面的可能的实现方式中SMF节点激活PDU session的过程，在此不再赘述。
再一方面，本发明实施例提供了一种SMF节点，包括：
接收单元，用于从AMF节点或者控制面节点接收终端设备的待激活PDU session的标识，该待激活PDU session的标识由控制面节点根据从AMF节点接收的指示信息确定，该指示信息用于指示AMF节点接收到终端设备发送的服务请求消息；
激活单元，用于根据待激活PDU session的标识，激活终端设备的待激活PDU session。
其中，SMF节点的具体实现方式可以参考上述再一方面或上述再一方面的可能的实现方式提供的激活session的方法中SMF节点的行为功能，在此不再赘述。因此，该方面提供的SMF节点可以达到与上述方面相同的有益效果。
再一方面，本申请实施例提供了一种SMF节点，该SMF节点可以实现上述再一方面所述的方法实施例中SMF节点所执行的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个上述功能相应的模块。
在一种可能的设计中，该SMF节点的结构中包括处理器和通信接口，该处理器被配置为支持该SMF节点执行上述方法中相应的功能。该通信接口用于支持该SMF节点与其他网元之间的通信。该SMF节点还可以包括存储器，该存储器用于与处理器耦合，其保存该SMF节点必要的程序指令和数据。
再一方面，本申请实施例提供了一种计算机存储介质，用于储存为上述SMF节点所用的计算机软件指令，该计算机软件指令包含用于执行上述再一方面所述方案的程序。
再一方面，本申请实施例提供了一种计算机程序产品，该程序产品储存有上述SMF节点所用的计算机软件指令，该计算机软件指令包含用于执行上述再一方面所述方案的程序。
再一方面，本申请实施例提供了一种装置，该装置以芯片的产品形态存在，该装置的结构中包括处理器和存储器，该存储器用于与处理器耦合，保存该装置必要的程序指令和数据，该处理器用于执行存储器中存储的程序指令，使得该装置执行上述再一方面所述方法中SMF节点的功能。
再一方面，本发明实施例提供一种激活session的系统，包含：终端设备、如又一方面或又一方面的任一可能的实现方式所述的AMF节点、如上述方面或上述方面的任一可能的实现方式所述的控制面节点、SMF节点；或者包含终端设备、如再一方面或再一方面的任一可能的实现方式所述的AMF节点、控制面节点、SMF节点；或者如再一方面或再一方面的任一可能的实现方式所述的终端设备、AMF节点、控制面节点、以及SMF节点；或者终端设备、AMF节点、控制面节点、以及如再一方面或再一方面的任一可能的实现方式所述的SMF节点。
附图说明
图1为现有技术提供的一种信令交互流程示意图；
图2为本发明实施例提供的一种系统架构的简化示意图；
图3为本发明实施例提供的一种网络功能节点的组成示意图；
图4为本发明实施例提供的一种终端设备的组成示意图；
图5为本发明实施例提供的一种激活session的方法流程图；
图5a为本发明实施例提供的激活PDU session的方法流程图；
图6为本发明实施例提供的一种激活session的方法流程图；
图7为本发明实施例提供的又一种激活session的方法流程图；
图8为本发明实施例提供的又一种激活session的方法流程图；
图9为本发明实施例提供的再一种激活session的方法流程图；
图10为本发明实施例提供的再一种激活session的方法流程图；
图11为本发明实施例提供的一种控制面节点的组成示意图；
图12为本发明实施例提供的一种控制面节点的组成示意图；
图13为本发明实施例提供的一种AMF节点的组成示意图；
图14为本发明实施例提供的一种AMF节点的组成示意图；
图15为本发明实施例提供的一种终端设备的组成示意图；
图16为本发明实施例提供的一种终端设备的组成示意图；
图17为本发明实施例提供的一种SMF节点的组成示意图；
图18为本发明实施例提供的一种SMF节点的组成示意图。
具体实施方式
下面将结合附图对本发明实施例的实施方式进行详细描述。
本发明实施例提供的激活session的方法可以应用于任何有PDU session激活需求的通信系统，如：可以应用于图2所示的5G系统。
如图2所示，该5G系统可以包括终端设备、接入网(access network，AN)/无线接入网(radio access network，RAN)节点、数据网络(data network，DN)节点以及下述多个网络功能(network functions，NF)节点：NWDA节点、鉴权服务器功能(authentication server function，AUSF)节点、统一数据管理(unified data management， UDM)节点、AMF节点、SMF节点、PCF节点、应用功能(application function，AF)节点、UPF节点。可理解的是，图2仅为示例性架构图，除图2所示功能节点之外，该5G系统还可以包括其他功能节点，本发明实施例对此不进行限定。
在图2所示的5G系统中，各功能节点之间可以通过下一代网络(next generation，NG)接口建立连接实现通信，如：终端设备可以通过N接口1(简称N1)与AMF节点建立控制面信令连接，AN/RAN节点可以通过N接口3(简称N3)与UPF节点建立用户面数据连接，AN/RAN节点可以通过N接口2(简称N2)与AMF节点建立控制面信令连接，UPF节点可以通过N接口4(简称N4)与SMF节点建立控制面信令连接，UPF节点可以通过N接口6(简称N6)与DN节点交互用户面数据，AMF节点可以通过N接口8(简称N8)与UDM节点建立控制面信令连接，AMF节点可以通过N接口12(简称N12)与AUSF节点建立控制面信令连接，AMF节点可以通过N接口11(简称N11)与SMF节点控制面信令连接，SMF节点可以通过N接口7(简称N7)与PCF节点控制面信令连接，AMF节点可以通过N接口X1(简称NX1，5G系统标准中未定义的接口)与NWDA节点控制面信令连接，SMF节点可以通过NX2(5G系统标准中未定义的接口)接口与NWDA节点控制面信令连接，PCF节点可以通过N接口5(简称N5)与AF节点控制面信令连接，PCF节点可以通过NX3(5G系统标准中未定义的接口)接口与NWDA节点控制面信令连接，AUSF节点可以通过N接口13(简称N13)与UDM节点控制面信令连接。
其中，图2中的终端设备可以为UE，还可以为蜂窝电话、无绳电话、会话发起协议(session initiation protocol，SIP)电话、智能电话、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、膝上型计算机、手持式通信设备、手持式计算设备、卫星无线设备、无线调制解调器卡和/或用于在无线系统上进行通信的其它设备。AN/RAN节点为由多个5G-AN/5G-RAN节点组成的网络，用于实现无线物理层功能、资源调度和无线资源管理、无线接入控制以及移动性管理功能，5G-AN/5G-RAN节点可以为：接入节点、下一代基站(generation nodeB，gNB)、收发点(transmission receive point，TRP)、传输点(transmission point，TP)或某种其它接入网设备。UDM节点、AUSF节点、NWDA节点、PCF节点、AMF节点、SMF节点、UPF节点可统称为NF节点，其中，NF节点中的NWDA节点、PCF节点可称为控制面(control plane，CP)节点，UPF节点可以称为用户面功能(user plane function，UPF)节点。NF节点中除UPF节点之外的节点可以独立工作，也可以组合在一起实现某些控制功能，如：这些节点组合在一起后可以完成终端设备的接入鉴权、安全加密、位置注册等接入控制和移动性管理功能，以及用户面传输路径的建立、释放和更改等会话管理功能，以及分析一些切片(slice)相关的数据(如拥塞)、终端设备相关的数据的功能。UPF节点主要完成用户面数据的路由转发等功能，如：负责对终端设备的数据报文过滤、数据传输/转发、速率控制、生成计费信息等。
具体的，图2中可称为网络功能节点的UDM节点、AUSF节点、NWDA节点、PCF节点、AMF节点、SMF节点和UPF节点可以包含图3所示的部件。图3为本发明实施例提供的一种网络功能节点的组成示意图，如图3所示，该网络功能节点可以包括至少一个处理器31，存储器32、通信接口33、通信总线34。需要说明的是，图 3示出的设备结构并不构成对网络功能节点的限定，可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置，本发明实施例对此不进行限定。下面结合图3对网络功能节点的各个构成部件进行具体的介绍：
处理器31是网络功能节点的控制中心，可以是一个处理器，也可以是多个处理元件的统称。例如，处理器31是一个中央处理器(central processing unit，CPU)，也可以是特定集成电路(application specific integrated circuit，ASIC)，或者是被配置成实施本发明实施例的一个或多个集成电路，例如：一个或多个微处理器(digital signal processor，DSP)，或，一个或者多个现场可编程门阵列(field programmable gate array，FPGA)。其中，处理器31可以通过运行或执行存储在存储器32内的软件程序，以及调用存储在存储器32内的数据，执行网络功能节点的各种功能。
在具体的实现中，作为一种实施例，处理器31可以包括一个或多个CPU，例如图3中所示的CPU0和CPU1。在具体实现中，作为一种实施例，网络功能节点可以包括多个处理器，例如图3中所示的处理器31和处理器35。这些处理器中的每一个可以是一个单核处理器(single-CPU)，也可以是一个多核处理器(multi-CPU)。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
存储器32可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器32可以独立存在，通过通信总线34与处理器31相连接。存储器32也可以和处理器31集成在一起。其中，所述存储器32用于存储执行本发明实施例提供的方案的软件程序，并由处理器31来控制执行。
通信接口33，用于与其他设备或通信网络通信，如以太网，RAN，无线局域网(wireless local area networks，WLAN)等。通信接口33可以包括接收单元实现接收功能，以及发送单元实现发送功能。
通信总线34，可以是工业标准体系结构(industry standard architecture，ISA)总线、外部设备互连(peripheral component，PCI)总线或扩展工业标准体系结构(extended industry standard architecture，EISA)总线等。该总线可以分为地址总线、数据总线、控制总线等。为便于表示，图3中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
当图3所示的网络功能节点为本发明实施例所述的NWDA节点或者PCF节点时，该网络功能节点可以执行本发明实施例提供的激活session的方法中NWDA节点或者PCF节点的功能，如：网络功能节点中的通信接口33可以用于从AMF节点接收用于指示AMF节点接收到终端设备发送的服务请求消息的指示信息；网络功能节点中的处理器31可以用于根据通信接口33接收到的指示信息，获得激活相关参数，根据激 活相关参数确定终端设备的待激活PDU session，并通过通信接口33向AMF节点或者SMF节点发送终端设备的待激活PDU session的标识。
当图3所示的网络功能节点为本发明实施例所述的AMF节点时，该AMF节点可以执行本发明实施例提供的激活session的方法中AMF节点的功能，如：在一种可实现方式中，网络功能节点中的通信接口33可以用于接收终端设备发送的服务请求消息，并向PCF节点或者NWDA节点或者SMF节点发送用于指示AMF节点接收到终端设备发送的服务请求消息的指示信息、以及接收NWDA节点或者PCF节点发送的终端设备的待激活PDU session的标识，向SMF节点发送待激活PDU session的标识；在另一种可实现方式中，网络功能节点中的通信接口33可以用于接收终端设备发送的服务请求消息，网络功能节点中的处理器31可以用于根据服务请求消息获得终端设备的激活相关参数，并根据激活相关参数确定终端设备的待激活PDU session，通过通信接口33向SMF节点发送终端设备的待激活PDU session的标识。
当图3所示的网络功能节点为本发明实施例所述的SMF节点时，该网络功能节点可以用于执行本发明实施例提供的激活session的方法中SMF节点的功能，如：在一种可实现方式中，网络功能节点中的通信接口33可以用于从AMF节点接收用于指示AMF节点接收到终端设备发送的服务请求消息的指示信息；网络功能节点中的处理器31可以用于根据通信接口33接收到的指示信息获得终端设备的激活相关参数，根据激活相关参数确定终端设备的待激活PDU session，激活待激活PDU session。在另一种可实现方式，网络功能节点中的通信接口33可以用于从NWDA节点或者PCF节点接收终端设备的待激活PDU session的标识；网络功能节点中的处理器31可以用于根据通信接口33接收到的待激活PDU session的标识，激活待激活PDU session。
图4为本发明实施例提供的一种终端设备的组成示意图，如图4所示，该终端设备可以包括至少一个处理器41、存储器42、收发器43、通信总线44。下面结合图4对终端设备的各个构成部件进行具体的介绍：
处理器41是终端设备的控制中心，可以是一个处理器，也可以是多个处理元件的统称。例如，处理器41是一个CPU，也可以是ASIC，或者是被配置成实施本发明实施例的一个或多个集成电路，例如：一个或多个DSP，或，一个或者多个FPGA。其中，处理器41可以通过运行或执行存储在存储器42内的软件程序，以及调用存储在存储器42内的数据，执行终端设备的各种功能。
在具体的实现中，作为一种实施例，处理器41可以包括一个或多个CPU，例如图4中所示的CPU0和CPU1。在具体实现中，作为一种实施例，终端设备可以包括多个处理器，例如图4中所示的处理器41和处理器45。这些处理器中的每一个可以是一个single-CPU处理器，也可以是一个multi-CPU处理器。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
存储器42可以是ROM或可存储静态信息和指令的其他类型的静态存储设备，RAM或者可存储信息和指令的其他类型的动态存储设备，也可以是EEPROM、CD-ROM或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于 此。存储器42可以是独立存在，通过通信总线44与处理器41相连接。存储器42也可以和处理器41集成在一起。其中，所述存储器42用于存储执行本发明方案的软件程序，并由处理器41来控制执行。
收发器43，用于与其他设备或通信网络通信，如以太网，RAN，WLAN等。收发器43可以包括接收单元实现接收功能，以及发送单元实现发送功能；具体的，该收发器43可以为射频模块。
通信总线44，可以是ISA总线、PCI总线或EISA总线等。该总线可以分为地址总线、数据总线、控制总线等。为便于表示，图4中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
图4所示的终端设备可以执行本申请实施例提供的激活session的方法中终端设备执行的操作。如：在一种可实现方式中，终端设备中的收发器43可以用于向AMF节点发送服务请求消息；在另一种可实现方式中，终端设备中的处理器41可以用于根据激活相关参数，确定激活终端设备的待激活PDU session，终端设备的收发器43可以用于向SMF节点发送处理器41确定出的待激活PDU session的标识，以便SMF节点根据待激活PDU session的标识激活该PDU session。
需要说明的是，图4中示出的设备结构并不构成对终端设备的限定，可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。尽管未示出，终端设备还可以包括显示器、电池、摄像头、蓝牙模块、全球定位系统(global positioning system，GPS)等模块，在此不再赘述。
下面结合图2所示5G系统，对本发明实施例提供的激活session的方法进行详细描述，其中，下述方法实施例中的节点可对应包含图3或图4所示的组成部件。需要说明的是，虽然在下述方法流程图中示出了逻辑顺序，但是在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤。
图5为本发明实施例提供的一种激活session的方法流程图，如图5所示，该方法可以包括以下：
步骤501：终端设备向AMF节点发送服务请求消息。
其中，终端设备可以为图2所示5G系统中的终端设备。
其中，服务请求消息可以用于在终端设备处于空闲态的情况下，请求将终端设备从空闲态转换为连接态；或者，服务请求消息可以用于在终端设备处于连接态、且终端设备的某一PDU session有数据传输需求的情况下，请求激活终端设备的某一PDU session，此时，该服务请求消息可以包含终端设备请求激活的PDU session的标识，或者，服务请求消息可以用于在终端设备处于空闲态，且终端设备的某一PDU session有数据传输需求的情况下，请求将终端设备从空闲态转换为连接态，以及请求终端设备的某一PDU session，此时，该服务请求消息可以包含终端设备请求激活的PDU session的标识。
在本发明各实施例中，PDU session的标识用于标识PDU session，该PDU session为当前传输终端设备的数据的session。可选的，该PDU session标识为数字或者字母或者其他标识符；如可以用数字1或者字母A作为PDU session1的标识，当终端设备请求激活PDU session1来传输数据时，步骤501中的服务请求消息可以包含数字1或 者字母A。需要说明的是，为了降低消息发送冗余，可以将PDU session的标识转换为对应的比特数包含在服务请求消息中进行发送。
进一步地，终端设备处于空闲态可以指：终端设备与AMF节点之间未建立NAS信令连接；终端设备处于连接态可以指：终端设备与AMF节点之间已建立NAS信令连接。
可选的，终端设备可以通过终端设备与AMF节点之间的N1接口向AMF节点发送服务请求消息；终端设备还可以通过接入网节点向AMF节点发送该服务请求消息，不予限制。
步骤502：AMF节点接收终端设备发送的服务请求消息，并根据服务请求消息向控制面节点发送指示信息。
其中，该指示信息用于指示AMF节点接收到终端设备发送的服务请求消息。
可选地，步骤502中AMF节点根据服务请求消息向控制面节点发送指示信息，包括：
服务请求消息作为AMF节点发送指示信息的触发条件，当AMF节点接收到服务请求消息时，即向控制面节点发送指示信息；或者，
当AMF节点根据该服务请求消息确定终端设备需要从空闲态转换为连接态时，向控制面节点发送该指示信息；或者，
当服务请求消息包含终端设备请求激活的PDU session的标识时，AMF节点向控制面节点发送该指示信息，其中，AMF节点向控制面节点发送该指示信息可以包括：将终端设备请求激活的PDU session的标识作为指示信息或指示信息中的一部分，向控制面节点发送该指示信息；或者，
服务请求消息包含终端设备请求激活的PDU session的标识，当AMF节点根据该服务请求消息确定终端设备需要从空闲态转换为连接态，且终端设备请求激活PDU session时，向控制面节点发送该指示信息，其中，AMF节点向控制面节点发送该指示信息可以包括：将终端设备请求激活的PDU session作为指示信息或指示信息中的一部分，向控制面节点发送该指示信息。
其中，AMF节点可以采用现有技术识别出接收到的终端设备发送的消息为服务请求消息，如：AMF节点可以根据接收到的消息头中包含的信息确定该消息的类型，根据该类型确定接收到的消息为服务请求消息，该服务请求消息的作用如步骤501所述。
同时，AMF节点还可以实时监测终端设备的状态，当AMF节点接收到的终端设备发送的服务请求消息时，若AMF节点监测到终端设备当前处于空闲态，则AMF节点确定终端设备需要从空闲态转换为连接态；或者，若服务请求消息包含终端设备请求激活的PDU session的标识，且AMF节点监测到终端设备当前处于空闲态，则AMF节点识别出终端设备需要从空闲态转换为连接态。
其中，AMF节点可以采用现有技术监测终端设备的状态，在此不再赘述。
其中，该控制面节点可以为NWDA节点或者PCF节点，具体可以参见图2。
示例性地，当控制面节点为NWDA节点时，AMF节点可以与NWDA节点间直接交互信息或者通过PCF节点交互信息，如：AMF节点可以直接向NWDA节点发送上述指示信息，也可以通过PCF节点向NWDA节点发送上述指示信息，即AMF节点向 PCF节点发送上述指示信息，PCF节点接收到上述指示信息后向NWDA节点发送上述指示信息。
需要说明的是，在AMF节点通过PCF节点向NWDA节点发送上述指示信息的过程中，AMF节点与PCF节点间交互的信息、PCF节点与NWDA节点间交互的信息可以为同一信息，如：AMF节点可以向PCF节点发送上述指示信息，PCF节点将上述该指示信息发送至NWDA节点。此时，步骤503可以替换为控制面节点从PCF节点接收上述指示信息。
此外，AMF节点与PCF节点间交互的信息、PCF节点与NWDA节点间交互的信息也可以为不同信息(如二者的命名、信息格式、包含的内容等各不相同)，如：AMF节点向PCF节点发送上述指示信息，PCF节点根据上述指示信息识别出AMF节点接收到终端设备发送的服务请求消息，PCF节点向NWDA节点发送用于请求为该终端设备预测待激活的PDU session的信息。此时，步骤502可以替换为AMF节点根据服务请求消息向PCF节点发送上述指示信息，PCF节点根据上述指示信息向控制面节点发送用于请求为该终端设备预测待激活的PDU session的信息；相应地，步骤503可以替换为控制面节点接收PCF节点发送的用于请求为该终端设备预测待激活的PDU session的信息，并根据该信息向SMF节点发送终端设备的待激活PDU session的标识。
步骤503：控制面节点从AMF节点接收指示信息，并根据该指示信息向SMF节点发送终端设备的待激活PDU session的标识。
其中，待激活PDU session的标识用于标识终端设备的待激活PDU session，终端设备的待激活PDU session为即将被激活的PDU session，或者为在该服务请求消息触发的流程中被激活的PDU session。
可选的，待激活PDU session的标识为数字或者字母或者其他标识符，例如，可以用数字2或者字母B作为待激活的PDU session2的标识，控制面节点可以向SMF节点发送数字2或者字母B，以表示终端设备的待激活PDU session为PDU session2。需要说明的是，为了降低信息发送冗余，在发送待激活PDU session的标识时可以将该标识转换为对应的比特数进行发送。
其中，SMF节点可以为该待激活PDU session对应的SMF节点。
可选的，在终端设备的PDU session建立过程中，可以将终端设备的PDU session与管理该PDU session的SMF节点的对应关系预先存储在AMF节点和/或SMF节点中，在执行步骤503时，控制面节点可以根据存储的对应关系，查找出与终端设备的待激活PDU session对应的SMF节点，并向该SMF节点发送待激活PDU session的标识。
其中，建立终端设备的PDU session的过程可参照现有技术，在此不再详述。
可选的，当控制面节点为NWDA节点时，控制面节点可以直接向SMF节点发送终端设备的待激活PDU session的标识，还可以通过PCF节点向SMF节点发送终端设备的待激活PDU session的标识，即NWDA节点向PCF节点发送待激活PDU session的标识，PCF节点接收到待激活PDU session的标识后向SMF节点发送待激活PDU session的标识。
其中，在NWDA节点通过PCF节点向SMF节点发送终端设备的待激活PDU session的标识的程中，NWDA节点可以将待激活PDU session携带在第一消息中向PCF 节点发送，PCF节点可以将待激活PDU session的标识携带在第二消息中向SMF节点发送。其中，第一消息和第二消息可以为同一消息，如：第一消息和第二消息可以为用于请求激活该待激活PDU session的激活请求消息，NWDA节点可以向PCF节点发送包含待激活PDU session的标识的激活请求消息，PCF节点向SMF节点发送该激活请求消息；或者，第一消息和第二消息可以为不同消息，如：第一消息可以为响应消息，第二消息可以为用于请求激活该待激活PDU session的激活请求消息，NWDA节点向PCF节点发送包含待激活PDU session的标识的响应消息，PCF节点从该响应消息中获取到待激活PDU session的标识后，向SMF节点发送包含待激活PDU session的标识的激活请求消息。需要说明的是，第一消息和第二消息为不同消息可以指：第一消息和第二消息的命名、消息格式、包含的内容等均不相同。
需要指出的是，上述控制面节点向SMF节点发送待激活PDU session的标识具体可以是：控制面节点向AMF节点发送该待激活PDU session的标识，AMF节点收到该待激活PDU session的标识后，再将该待激活PDU session的标识发送给SMF节点；或者，AMF节点从控制面节点接收终端设备的待激活PDU session的标识后，向SMF节点发送激活请求消息，该激活请求消息用于请求SMF节点激活待激活PDU session。
步骤504：SMF节点从控制面节点接收终端设备的待激活PDU session的标识，并根据该待激活PDU session的标识激活该待激活PDU session。
其中，SMF节点激活PDU session的方式可以参照图5a所述过程，在此不再赘述。
可理解的是，图5为激活终端设备的一个待激活PDU session的示例性方案，激活终端设备的多个待激活PDU session的过程可参照图5所示方案，在此不再赘述。
与现有技术相比，在图5所示技术方案中，当终端设备向AMF节点发送服务请求消息，即终端设备发起一次服务请求流程时，激活未来可能会被激活的PDU session，即发起一次服务请求流程即可激活未来待激活的PDU session，不需要如现有技术一样，只有当需要发送PDU session对应的数据时才去激活该PDU session，导致终端设备发起多次PDU session激活流程，本发明实施例提供的技术方案降低了终端设备发起PDU session激活流程的次数，减少了信令开销。
需要指出的是，本申请各实施例之间涉及的名词，术语，或步骤的细化说明均可以相关借鉴和参考，不再赘述。
图5a为本发明实施例提供的激活PDU session的方法流程图，如图5a所示，可以包括：
步骤5041：SMF节点向AMF节点发送第一会话消息。
其中，第一会话消息可以是N2接口信令消息，包含与待激活PDU session相关的一些信息，如：可以包含QoS profile和CN N3 tunnel information，该CN N3 tunnel information用于接入网节点将该终端设备的数据正确地发送到对应的UPF节点；QoS profile包括了待激活PDU session的所有QoS flows所对应的QoS参数信息，QoS profile用于接入网节点建立空口承载。
步骤5041的执行过程可参照现有技术，在此不再详述。可选的，SMF节点可以通过图2中的N11接口向AMF节点发送第一会话消息。
步骤5042：AMF节点从SMF节点接收第一会话消息，向接入网节点发送第一会 话消息以及安全建立相关信息。
其中，安全建立相关信息可以包含：安全上下文(security context)。
可选的，AMF节点可以通过图2中的N2接口向接入网节点发送第一会话消息以及安全建立相关信息。
步骤5043：接入网节点从AMF节点接收第一会话消息以及安全建立相关信息，根据第一会话消息与终端设备建立RRC连接重配置，以及根据安全建立信息建立终端设备与接入网节点之间的安全。
其中，接入网节点根据第一会话消息与终端设备建立RRC连接重配置，以及根据安全建立信息建立终端设备与接入网节点之间的安全的过程可参照现有技术，在此不再详述。
步骤5044：接入网节点向AMF节点发送第二会话消息。
其中，该第二会话消息可以包含：RAN N3 tunnel information、list of accepted QoS flows for the PDU Sessions activated、以及list of rejected QoS flows for the PDU Sessions activated。
可选的，接入网节点可以通过图2中的N2接口向AMF节点发送第二会话消息。
步骤5045：AMF节点从接入网节点接收第二会话消息，向SMF节点发送第二会话消息。
步骤5046：SMF节点从AMF节点接收第二会话消息，向AMF节点发送响应消息。
进一步可选的，当本发明实施例提供的技术方案部署了PCC策略时，图5a所示过程还可以包括：
步骤5047：SMF节点发起IP-CAN Session Establishment。
步骤5048：SMF节点将第二会话消息中的RAN N3 tunnel information配置到UPF节点上。
其中，该RAN N3 tunnel information用于UPF节点将该终端设备的数据正确地发送到对应的接入网节点。步骤5048的执行过程可参照现有技术，在此不再详述。
可选的，上述图5所示方案还可以包括：终端设备向AMF节点发送一些附加信息，这些附加信息可以包括终端设备的标识，或者终端设备的标识和终端设备的位置信息；如：终端设备将附加信息携带在RRC请求消息中向接入网节点发送，接入网节点接收到终端设备发送的附加信息后，将该附加信息携带在N2接口信令消息中向AMF节点发送。其中，该过程可以与步骤501同时执行，此时，步骤501可替换为：终端设备向AMF节点发送服务请求消息和终端设备的标识，或者服务请求消息、终端设备的标识和终端设备的位置信息；也可以在步骤501之前执行，还可以在步骤501之后、AMF节点向控制面节点发送指示信息之前执行。
其中，终端设备的标识用于标识该终端设备，该终端设备的标识可以为国际移动用户识别码(international mobile subscriber identity，IMSI)，还可以为通信协议规定的一个标识，该标识可以与IMSI对应，如：终端设备与AMF节点通信时，预先在通信协议中规定一个二者可知的标识，该标识可以为数字或者字母或者其他标识符；如可以用数字1作为与终端设备的IMSI对应的标识，用于标识终端设备1。
其中，终端设备的位置信息用于确定终端设备当前所处位置，可以为终端设备的历史驻留小区、以及每个小区的驻留时长；还可以为终端设备的历史驻留消息、以及小区切换次数；又可以为终端设备的坐标信息。
可选的，上述图5所示方案中的指示信息可以包含终端设备的标识，以便控制面节点根据该终端设备的标识获得终端设备的激活相关参数，根据激活相关参数确定终端设备的待激活PDU session，可以参见下述步骤604中的方式2-3；或者，
该指示信息可以包含终端设备的标识和终端设备请求激活的PDU session的标识，以便控制面节点根据终端设备的标识获得终端设备的激活相关参数，根据激活相关参数确定终端设备的待激活PDU session，可以参见下述步骤604中的方式2-4；或者，
该指示信息可以包含终端设备的标识、终端设备的位置信息和终端设备请求激活的PDU session的标识，以便控制面节点根据终端设备的标识获得终端设备的激活相关参数，根据激活相关参数确定终端设备的待激活PDU session，可以参见下述步骤604中的方式1-4；或者，
该指示信息可以包含终端设备的标识、终端设备的位置信息，以便控制面节点根据终端设备的标识获得终端设备的激活相关参数，根据激活相关参数确定终端设备的待激活PDU session，可以参见下述步骤604中的方式1-3；或者，
该指示信息可以包含终端设备的标识和终端设备请求激活的PDU session的数据网络名称(Data Network Name，DNN)，以便控制面节点根据终端设备的标识获得终端设备的激活相关参数，根据激活相关参数以及PDU session的DNN确定终端设备的待激活PDU session，具体的，可参见下述步骤604中的方式4。其中，DNN为PDU session连接的数据网络的名称，用于标识PDU session连接的数据网络。如：AMF可以根据终端设备请求激活的PDU session的标识确定终端设备请求激活的PDU session的DNN，当AMF执行步骤502时，AMF可以将终端设备请求激活的PDU session的DNN发送给控制面节点，例如，携带在指示消息中向控制面节点发送。其中，AMF根据终端设备请求激活的PDU session的标识确定终端设备请求激活的PDU session的DNN可以包括：AMF根据PDU session的标识、以及PDU session的标识与DNN的对应关系，确定终端设备请求激活的PDU session的DNN；或者，
该指示信息可以包含终端设备的标识和终端设备请求激活的PDU session的网络切片选择辅助信息(Network Slice Selection Assistance Information，NSSAI)，以便控制面节点根据终端设备的标识获得终端设备的激活相关参数，根据激活相关参数以及PDU session的NSSAI确定终端设备的待激活PDU session，具体的，可参见下述步骤604中的方式4。其中，PDU session的NSSAI用于指示管理PDU session的SMF所在的网络切片，NSSAI中包括多个单NSSAI(single NSSAI，S-NSSAI)，S-NSSAI由服务类型(slice/service type，SST)和切片区分器(slice differentiator，SD)组成，SST包括标准化和运营商自定义的类型；SD是补充SST的可选信息，以区分相同SST的多个网络切片。如：AMF可以根据终端设备请求激活的PDU session的标识确定终端设备请求激活的PDU session的NSSAI，当AMF执行步骤502时，AMF可以将终端设备请求激活的PDU session的NSSAI发送给控制面节点，例如，携带在指示消息中向控制面节点发送。其中，AMF根据终端设备请求激活的PDU session的标识确定终 端设备请求激活的PDU session的NSSAI，可以包括：AMF根据终端设备请求激活的PDU session的标识、以及PDU session的标识与NSSAI的对应关系，确定终端设备请求激活的PDU session的NSSAI；或者，
该指示信息可以包含终端设备的标识和终端设备请求激活的PDU session的DNN和NSSAI，以便控制面节点根据终端设备的标识获得终端设备的激活相关参数，根据激活相关参数、以及PDU session的DNN和NSSAI确定终端设备的待激活PDU session，具体的，可参见下述步骤604中的方式4。如：AMF可以根据终端设备请求激活的PDU session的标识确定终端设备请求激活的PDU session的DNN和NSSAI，当AMF执行步骤502时，AMF可以将终端设备请求激活的PDU session的DNN和NSSAI发送给控制面节点，例如，携带在指示消息中向控制面节点发送。其中，AMF根据终端设备请求激活的PDU session的标识确定终端设备请求激活的PDU session的DNN和NSSAI，可以包括：AMF根据终端设备请求激活的PDU session的标识、以及PDU session的标识与NSSAI和DNN的对应关系，确定终端设备请求激活的PDU session的NSSAI。
需要说明的是，上述终端设备请求激活的PDU session的标识，或者，终端设备请求激活的PDU session的DNN，或者，终端设备请求激活的PDU session的NSSAI，或者，终端设备请求激活的PDU session的DNN和NSSAI可以包括在除指示信息之外的信息中向控制面节点发送，不予限制。
可选的，上述控制面节点根据指示信息向SMF节点发送待激活PDU session的标识采用如下实现方式：
一种实现方式：控制面节点根据该指示信息获得终端设备的激活相关参数，根据激活相关参数确定终端设备的待激活PDU session，向SMF节点发送确定出的待激活PDU session的标识。
其中，指示信息可以包含终端设备的标识，或者终端设备的标识和终端设备请求激活的PDU session的标识，或者终端设备的标识、终端设备的位置信息和终端设备请求激活的PDU session的标识，或者终端设备的标识和终端设备的位置信息。
其中，控制面节点根据该指示信息获得终端设备的激活相关参数可以包括：控制面节点查询终端设备与激活相关参数的对应关系，将与终端设备的标识所标识的终端设备对应的激活相关参数确定为终端设备的激活相关参数。
其中，激活相关参数如下述步骤604中所述，终端设备与激活相关参数的对应关系预先存储在控制面节点中，例如，控制面节点存储有：终端设备1与激活相关参数1、终端设备2与激活相关参数2、终端设备3与激活相关参数3的对应关系，指示信息包含的终端设备的标识为1，则控制面接收到指示信息后，可以查询对应关系，找出标识为1的终端设备对应的激活相关参数1，将激活相关参数1作为终端设备1的激活相关参数。
另一种实现方式：上述指示信息作为控制面节点向SMF节点发送待激活PDU session的触发条件。例如，当控制面节点接收到该指示信息时，向SMF节点发送终端设备的待激活PDU session的标识。
再一种实现方式：上述指示信息包含终端设备的标识和终端设备请求激活的PDU  session的标识，控制面节点从指示信息包含的终端设备的标识识别出终端设备，将终端设备请求激活的PDU session所标识的PDU session作为该终端设备的待激活PDU session，向SMF节点发送该待激活PDU session的标识。
可选地，为了降低了控制面节点的功耗以及提高控制面节点确定终端设备的待激活PDU session的安全性，上述方法还包括：控制面节点根据预测功能相关信息开启控制面节点的预测功能。当控制面节点的预测功能开启时，该控制面节点可以根据激活相关参数确定终端设备的待激活PDU session。
其中，预测功能相关信息可以包括以下信息中的至少一种：终端设备的设备类型，终端设备支持的业务类型，终端设备的签约数据，终端设备上报的请求消息，SMF节点是否支持所述控制面节点的预测功能的信息，以及AMF节点是否支持所述控制面节点的预测功能的信息；其中，请求消息用于请求控制面节点开启该控制面节点的预测功能。
具体的，上述可选步骤可以参见图6中的相关描述，不再赘述。
如图6所示，为本发明实施例提供的又一激活session的方法，该方法可以包括：
步骤601：控制面节点根据第一预测功能相关信息，开启控制面节点的预测功能。
其中，控制面节点的预测功能为控制面节点确定待激活PDU session的功能。
其中，第一预测功能相关信息可以包括但不限于以下信息中的至少一种：终端设备的设备类型，终端设备支持的业务类型，终端设备的签约数据，终端设备上报的请求消息，SMF节点是否支持控制面节点的预测功能的信息，以及AMF节点是否支持控制面节点的预测功能的信息。
其中，终端设备的设备类型可以根据终端设备能够提供的服务能力而定，例如：对于机器对机器(machine to machine，M2M)类型的终端设备(如传感器)，仅存在一个PDU session，则控制面节点可以不进行预测；对于车辆对其他任何事物(vechile to X，V2X)类型的终端设备，对时延要求比较高，控制面节点可以开启预测功能。
终端设备支持的业务类型可以包括：图像、语音、视频等类型。对于时延要求比较高的业务类型(如语音业务)，控制面节点可以开启预测功能。
终端设备的签约数据可以指：终端设备进行网签时填写的数据，该网签数据用于明确是否为该终端设备进行预测。例如：当终端设备的签约数据指示为该终端设备进行预测时，控制面节点根据该终端设备的签约数据开启预测功能；当终端设备的网签数据指示不对该终端设备进行预测时，控制面节点根据该终端设备的签约数据，关闭预测功能。
终端设备上报的请求消息用于请求控制面节点开启预测功能。例如：当控制面节点接收到该请求信息时，开启控制面节点的预测功能。
SMF节点是否支持控制面节点的预测功能的信息可以由控制面节点从SMF节点获取，当控制面节点获取到SMF节点支持控制面节点的预测功能的信息时，控制面节点可以开启预测功能，当控制面节点获取到SMF节点不支持控制面节点的预测功能的信息时，控制面节点关闭预测功能。
AMF节点是否支持控制面节点的预测功能的信息可以由控制面节点从AMF节点获取，当控制面节点获取到AMF节点支持控制面节点的预测功能的信息时，控制面 节点可以开启预测功能，当控制面节点获取到AMF节点不支持控制面节点的预测功能的信息时，控制面节点关闭预测功能。
需要指出的是，步骤601为可选步骤。
步骤602：终端设备向AMF节点发送服务请求消息。
其中，步骤602以及服务请求消息可以参考步骤501相同，在此不再赘述。
步骤603：AMF节点接收终端设备发送的服务请求消息，并根据该服务请求消息向控制面节点发送指示信息。
其中，步骤603以及指示信息均可以参考步骤502，在此不再赘述。
步骤604：控制面节点从AMF节点接收指示信息，根据指示信息获得终端设备的激活相关参数，根据激活相关参数确定终端设备的待激活PDU session。
其中，控制面节点根据指示信息获得终端设备的激活相关参数的过程如上所述，在此不再赘述。
其中，控制面节点根据激活相关参数确定终端设备的待激活PDU session可以包括但不限于下述至少一种可实现方式：
方式1：终端设备的激活相关参数包括位置区域与终端设备的PDU session之间的对应关系，控制面节点根据该对应关系、以及终端设备的位置信息，将终端设备当前所处位置区域对应的终端设备的PDU session确定为待激活PDU session。
其中，上述对应关系中位置区域对应的终端设备的PDU session包含：终端设备位于该位置区域时，终端设备的PDU session中激活频率比较高(例如，激活频率高于预设门限，即经常被激活)的PDU session。
需要说明的是，位置区域对应的终端设备的PDU session的激活状态随着PDU session的激活情况动态变化，可以存在当前处于未激活状态的PDU session，也可以存在当前处于激活状态的PDU session，当终端设备当前所处位置区域与该位置区域匹配上时，可以将处于未激活状态的PDU session作为待激活PDU session来激活。例如：位置区域A对应PDU session1、PDU session2、PDU session3，PDU session2处于激活状态，PDU session1、PDU session3处于未激活状态，当终端设备当前处于位置区域A时，可以将PDU session1、PDU session3确定为待激活PDU session。
其中，位置区域可以是网络概念的区域，比如：cell、TA、TAI；也可以是地理位置，比如：海淀区、朝阳区；还可以为更细粒度的区域，如：海淀区中关村。
示例性地，控制面节点可以从接收到的指示信息中获取终端设备的位置信息，根据该位置信息识别出终端设备当前所处位置区域。上述激活相关参数可以由控制面节点从管理PDU session的SMF节点获取或者从AMF节点获取，或者由控制面节点根据从AMF节点获取到的终端设备的移动性统计数据确定得到，并预先与终端设备对应存储在控制面节点中。
其中，终端设备的移动性统计数据可以包括：终端设备在某个位置区域时终端设备的各个PDU sessions处于激活状态的概率或者各个PDU session被激活的次数。
可选的，控制面节点可以在获取到终端设备的移动性统计数据之后，将概率大于概率阈值的PDU session或者将被激活的次数大于预设次数的PDU session确定为与该位置区域内对应的终端设备的PDU session，并保存两者之间的对应关系。
其中，概率阈值、预设次数可以根据需要进行设置。
例如，控制面节点获取到的终端设备的移动性统计数据为：终端设备在位置区域A时，PDU session1处于激活状态的概率为90％，PDU session2处于激活状态的概率为40％，PDU session3处于激活状态的概率为60％，PDU session4处于激活状态的概率为70％，PDU session5处于激活状态的概率为30％，若将概率大于或等于50％的PDU session确定为与位置区域对应的PDU session，则根据该移动性统计数据可以确定与位置区域A对应的PDU session为：PDU session1、PDU session3、PDU session4，此时，若控制面节点从指示消息包含的终端设备的位置信息识别出终端设备当前处于位置区域A，则可以根据该对应关系，确定PDU session1、PDU session3、PDU session4为待激活PDU session。
方式2：终端设备的激活相关参数包括终端设备的至少一个PDU session的初始激活时刻以及激活周期，控制面节点根据至少一个PDU session的初始激活时刻以及激活周期确定至少一个PDU session的预估激活时刻，将至少一个PDU session中预估激活时刻与当前时刻的时间差小于或等于第一预设阈值的PDU session确定为待激活PDU session。
其中，上述PDU session的预估激活时刻为当前时刻之后、与PDU session的上一激活时刻相差一个激活周期的时刻，该PDU session的上一激活时刻为当前时刻之前、与当前时刻相邻的激活时刻，该激活时刻为激活PDU session的时刻。
此外，PDU session的初始激活时刻为第一次激活该PDU session的时刻，PDU session的激活周期为该PDU session的两个相邻激活时刻之间的时间间隔。
需要说明的是，第一预设阈值，PDU session的初始激活时刻以及激活周期均可以根据需要进行设置，本发明实施例对此不进行限定。
当PDU session的预估激活时刻与当前时刻的时间差小于或等于第一预设阈值时，表示当前时刻之后短时间内即将激活该PDU session，例如，在本次服务请求流程中激活该PDU session；当PDU session的预估激活时刻与当前时刻的时间差大于第一预设阈值时，表示当前时刻之后短时间内不会激活该PDU session，例如，在本次服务请求流程中不会将该PDU session作为待激活PDU session进行激活。
可选的，方式2中的激活相关参数可以由控制面节点从管理PDU session的SMF节点获取，并预先与终端设备对应存储在控制面节点中。
例如，若PDU session1的初始激活时刻为早上9:00，PDU session1的激活周期为1个小时，PDU session2的初始激活时刻为早上7:00，PDU session1的激活周期为2个小时，当前时刻为11:30，第一预设阈值为30分钟，则PDU session1距离当前时刻最近的预估激活时刻为12:00，该预估激活时刻与当前时刻的时间差为30分钟，等于第一预设阈值；PDU session2距离当前时刻最近的预估激活时刻为13:00，该预估激活时刻与当前时刻的时间差为1小时30分钟，大于第一预设阈值，因此，可以将PDU session1确定为待激活PDU session。
方式3：终端设备的激活相关参数包括终端设备的至少一个PDU session的固定激活时刻，控制面节点将至少一个PDU session中固定激活时刻与当前时刻的时间差小于或等于第二预设阈值的PDU session确定为待激活PDU session。
其中，PDU session的固定激活时刻可以指：每到该激活时刻该PDU session就会被激活，该固定激活时刻可以根据需要进行设置，本发明实施例对比不进行限定。
可以理解的是，上述固定激活时刻为当前时刻之后的固定激活时刻。
其中，第二预设阈值可以根据需要进行设置，本发明实施例对此不进行限定，当PDU session的固定激活时刻与当前时刻的时间差小于或等于第二预设阈值时，表示当前时刻之后短时间内会激活该PDU session，例如，在本次服务请求流程中激活该PDU session；当PDU session的固定激活时刻与当前时刻的时间差大于第二预设阈值时，表示当前时刻之后短时间内不会激活该PDU session，例如，在本次服务请求流程中不会将该PDU session作为待激活PDU session进行激活。
可选的，方式3中的激活相关参数可以由控制面节点从管理PDU session的SMF节点获取，并预先与终端设备对应存储在控制面节点中。
例如：若PDU session1的固定激活时刻为早上10:00，PDU session2的固定激活时刻为早上11:00，当前时刻为9:30，第二预设阈值为30分钟，则PDU session1的固定激活时刻与当前时刻的时间差为30分钟，等于第二预设阈值，PDU session2的固定激活时刻与当前时刻的时间差为1小时30分钟，大于第二预设阈值，所以，可以将PDU session1确定为待激活PDU session。
方式4：终端设备的激活相关参数包括终端设备的PDU session与关联PDU session之间的对应关系，控制面节点根据该对应关系、以及终端设备请求激活的PDU session，将终端设备请求激活的PDU session对应的关联PDU session确定为待激活PDU session。
其中，方式4的对应关系中，终端设备的PDU session对应的关联PDU session可以指：在终端设备的PDU session被激活后的预设时间内被激活的PDU session；该预设时间可以根据需要进行设置，本发明实施例对比不进行限定。
一种可能的设计中，终端设备的PDU session与关联PDU session之间的对应关系为终端设备的PDU Session的标识与关联的PDU session的标识之间的对应关系。其中，终端设备请求激活的PDU session可以通过终端设备请求激活的PDU session的标识来表示，例如，AMF向控制面节点发送的指示消息中携带终端设备请求激活的PDU session的标识。上述方式4中控制面节点根据该对应关系、以及终端设备请求激活的PDU session的标识，将终端设备请求激活的PDU session的关联PDU session确定为待激活PDU session，可以包括：控制面节点查询根据终端设备的PDU session的标识与终端设备的PDU session的关联PDU session的标识之间的对应关系，确定终端设备请求激活的PDU session的标识对应的关联PDU session的标识；将确定的关联PDU session的标识所标识的PDU session确定为待激活PDU session。
例如，假设PDU Session1的ID为PDU Session ID1，PDU Session2的ID为PDU Session ID2，PDU Session1和PDU Session2互相关联，则所述PDU session1与PDU session2之间的对应关系为PDU Session ID1和PDU Session ID2之间的对应关系。AMF接收到终端设备请求激活的PDU session ID1后，将所述PDU session ID1发给控制面节点；控制面节点根据PDU session ID1、PDU Session ID1和PDU Session ID2之间的对应关系，确定PDU Session ID2为待激活的PDU Session。
一种可能的设计中，终端设备的PDU session与关联PDU session之间的对应关系 为终端设备的PDU Session的DNN与关联的PDU session的DNN之间的对应关系。其中，终端设备请求激活的PDU session可以通过终端设备请求激活的PDU session的DNN来表示，例如，AMF向控制面节点发送的指示消息中携带终端设备请求激活的PDU session的DNN。上述方式4中控制面节点根据该对应关系、以及终端设备请求激活的PDU session的信息，将终端设备请求激活的PDU session的关联PDU session确定为待激活PDU session，可以包括：控制面节点根据终端设备的PDU session的DNN与终端设备的PDU session的关联PDU session的DNN之间的对应关系，确定终端设备请求激活的PDU session的DNN对应的关联PDU session的DNN；将确定的关联PDU session的DNN对应的PDU session确定为待激活PDU session。其中，在该设计中，控制面节点存储有DNN与PDU session的对应关系。
例如，假设PDU Session1对应的DNN为DNN1，PDU Session2对应的DNN为DNN2，PDU Session1和PDU Session2互相关联，则所述PDU session1与PDU session2之间的对应关系为DNN1和DNN2之间的对应关系；AMF接收终端设备请求激活的PDU session ID1后，确定PDU session ID1的DNN为DNN1，将DNN1发给控制面节点；控制面节点根据DNN1、DNN1和DNN2之间的对应关系、PDU Session ID2和DNN2之间的对应关系，确定PDU Session ID2为待激活的PDU Session。
又一种可能的设计中，终端设备的PDU session与关联PDU session之间的对应关系为终端设备的PDU Session的NSSAI与关联的PDU session的NSSAI之间的对应关系。其中，终端设备请求激活的PDU session可以通过终端设备请求激活的PDU session的NSSAI来表示，例如，AMF向控制面节点发送的指示消息中携带终端设备请求激活的PDU session的NSSAI。上述方式4中控制面节点根据该对应关系、以及终端设备请求激活的PDU session的信息，将终端设备请求激活的PDU session的关联PDU session确定为待激活PDU session，可以包括：控制面节点根据终端设备的PDU session的NSSAI与终端设备的PDU session的关联PDU session的NSSAI之间的对应关系，确定终端设备请求激活的PDU session的NSSAI对应的关联PDU session的NSSAI；将确定的关联PDU session的NASSI对应的PDU session确定为待激活PDU session。其中，在该设计中，控制面节点存储有NASSI与PDU session的对应关系。
例如，假设PDU Session1对应的NSSAI为NSSAI1，PDU Session2对应的NSSAI为NSSAI2，PDU Session1和PDU Session2互相关联，则所述PDU session1与PDU session2之间的对应关系为NSSAI1和NSSAI2之间的对应关系。AMF接收终端设备请求激活的PDU session ID1，并确定PDU session ID1对应的NSSAI1，将NSSAI1发给控制面节点；控制面节点根据NSSAI1、NSSAI1和NSSAI2之间的对应关系、PDU Session ID2和NSSAI2之间的对应关系，确定PDU Session ID2为待激活的PDU Session。
再一种可能的设计中，终端设备的PDU session与关联PDU session之间的对应关系为终端设备的PDU Session的DNN和NSSAI、以及终端设备的PDU session关联的PDU session的DNN和NSSAI之间的对应关系。其中，终端设备请求激活的PDU session可以通过终端设备请求激活的PDU session的DNN和NSSAI来表示，例如，AMF向控制面节点发送的指示消息中携带终端设备请求激活的PDU session的DNN和NSSAI。上述方式4中控制面节点根据该对应关系、以及终端设备请求激活的PDU session的 信息，将终端设备请求激活的PDU session的关联PDU session确定为待激活PDU session，可以包括：控制面节点根据该对应关系，确定终端设备请求激活的PDU session的DNN和NSSAI对应的关联PDU session的DNN和NSSAI；将确定的关联PDU session的DNN和NASSI对应的PDU session确定为待激活PDU session。其中，在该设计中，控制面节点存储有DNN和NASSI与PDU session的对应关系。
例如，假设PDU Session1对应的(NSSAI和DNN)为(NSSAI1和DNN1)，PDU Session2对应的(NSSAI和DNN)为(NSSAI2和DNN2)，PDU Session1和PDU Session2互相关联，则所述PDU session1与PDU session2之间的对应关系为(NSSAI1和DNN1)和(NSSAI2和DNN2)之间的对应关系；AMF接收终端设备请求激活的PDU session ID1，并确定PDU session ID1对应NSSAI1和DNN1后，将(NSSAI1和DNN1)发给控制面节点；控制面节点根据(NSSAI1和DNN1)、(NSSAI1和DNN1)和(NSSAI2和DNN2)之间的对应关系、PDU Session ID2和(NSSAI2和DNN2)之间的对应关系，确定PDU Session ID2为待激活的PDU Session。
需要说明的是，在方式4实现的过程中，步骤602中的服务请求消息包含终端设备请求激活的PDU session，步骤603中，AMF节点还向控制面节点发送的指示信息包含终端设备请求激活的PDU session的标识。其中，在本申请各实施例中，除终端设备请求激活的PDU session标识之外，可以用终端设备请求激活的PDU session的DNN，或者终端设备请求激活的PDU session的NSSAI，或者终端设备请求激活的PDU session的DNN和NSSAI来标识终端设备请求激活的PDU session，因此，AMF节点向控制面节点发送的终端设备请求激活的PDU session的标识可以替换为终端设备请求激活的PDU session的DNN，或者终端设备请求激活的PDU session的NSSAI，或者终端设备请求激活的PDU session的DNN和NSSAI，不予限制。
可选的，方式4中的激活相关参数可以由控制面节点从管理终端设备的PDU session的SMF获取或者从AMF节点获取，并预先与终端设备对应存储在控制面节点中。
例如：终端设备的PDU session1的关联PDU session为：PDU session2、PDU session3，则当终端设备请求激活的PDU session为PDU session1时，则将PDU session2、PDU session3确定为待激活PDU session。
步骤605：控制面节点向SMF节点发送终端设备的待激活PDU session的标识。
其中，步骤605的执行过程可参照步骤503的相关描述，在此不再赘述。
步骤606：SMF节点接收终端设备的待激活PDU session的标识，根据该待激活PDU session的标识激活该待激活PDU session。
其中，步骤606的执行过程可参照步骤504的相关描述，在此不再赘述。
需要说明的是，在实现图6所示方案的过程中，步骤601可以在步骤604之前的任何步骤执行，不局限于图6所示的执行顺序。
在图5和图6所示方案中，控制面节点向SMF节点发送终端设备的待激活PDU session的标识的方式可以为：控制面节点直接向SMF节点发送终端设备的待激活PDU session的标识，还可以为：控制面节点通过AMF节点向SMF节点发送终端设备的待激活PDU session的标识，如：图5所示方案中的步骤503、图6所示方案中的步骤 605可以替换为控制面节点向AMF节点发送终端设备的待激活PDU session的标识，步骤504、步骤606可以替换为：AMF节点从控制面节点接收终端设备的待激活PDU session的标识，AMF节点向SMF节点发送终端设备的待激活PDU session的标识，SMF节点从AMF节点接收终端设备的待激活PDU session的标识，根据该待激活PDU session的标识激活该待激活PDU session。
需要说明的是，在执行图5和图6所示方案时，AMF节点可以根据一些预测相关参数(如：终端设备的设备类型，终端设备支持的业务类型，终端设备的签约数据，终端设备上报的用于请求AMF节点开启AMF节点的预测功能的请求消息，和SMF节点是否支持AMF节点的预测功能的信息中的至少一种信息)开启AMF节点的预测功能，以便AMF节点在开启预测功能的情况下，当AMF节点接收到终端设备发送的服务请求消息时，向控制面节点发送指示信息。
在另一种可行方案中，还可以由AMF节点在接收到终端设备发送的服务请求消息后，直接向SMF节点发送终端设备的待激活PDU session的标识，不需要AMF节点通过与控制面节点或者PCF节点的交互获取待激活PDU session的标识，以此降低信令开销，具体的，该可行方案的执行过程可参照图7所示方案。
如图7所示，为本发明实施例提供的另一种激活PDU session的方法，可以包括：
步骤701：终端设备向AMF节点发送服务请求消息。
其中，步骤701的执行过程以及服务请求消息均可参照步骤501，在此不再赘述。
步骤702：AMF节点接收终端设备发送的服务请求消息，并根据服务请求消息向SMF节点发送终端设备的待激活PDU session的标识。
其中，SMF节点可以为管理该待激活PDU session的SMF节点。
可选的，在终端设备的PDU session建立过程中，可以将终端设备的PDU session与管理该PDU session的SMF节点的对应关系预先存储在AMF节点中，在执行步骤702时，AMF节点可以根据存储的对应关系，查找出与终端设备的待激活PDU session对应的SMF节点，并向该SMF节点发送待激活PDU session的标识。
示例性的，AMF节点根据服务请求消息向SMF节点发送待激活PDU session的标识可以采用如下方式：
方式一、AMF节点根据该服务请求消息获得终端设备的激活相关参数，根据激活相关参数确定终端设备的待激活PDU session，向SMF节点发送确定出的待激活PDU session的标识。
其中，AMF节点根据该服务请求消息获得终端设备的激活相关参数可以包括：
当AMF节点接收到终端设备发送的服务请求消息时，AMF节点向控制面节点发送终端设备的标识，接收控制面节点发送的终端设备的激活相关参数，其中，控制面节点根据终端设备的标识获得终端设备的激活相关参数的方式可参照上述描述，在此不再赘述。
需要指出的是，现有技术中，AMF节点、终端设备之间建立的连接与终端设备对应，终端设备通过自身对应的连接向AMF节点发送消息或者数据，AMF节点接收到终端设备发送的服务请求消息后，可以识别出发送服务请求消息的终端设备。
方式二、上述服务请求消息作为AMF节点发送待激活PDU session的标识的触发 条件，当AMF节点接收到服务请求消息时，向SMF节点发送该待激活PDU session的标识。
需要说明的是，AMF节点可采用现有技术识别出从终端设备接收的消息为服务请求消息，在此不再赘述。
方式三、服务请求消息包括终端设备请求激活的PDU session的标识，AMF节点从服务请求消息中获取终端设备请求激活的PDU session，将终端设备请求激活的PDU session作为待激活PDU session，向SMF节点发送该待激活PDU session的标识。
可选的，上述AMF节点向SMF节点发送待激活PDU session的标识包括：
AMF节点向SMF节点发送激活请求消息，该激活请求消息包含终端设备的待激活PDU session的标识，该激活请求消息用于请求激活终端设备的待激活PDU session。
步骤703：SMF节点接收终端设备的待激活PDU session的标识，根据该待激活PDU session的标识激活该待激活PDU session。
其中，步骤703的执行过程可参照步骤504，在此不再赘述。
与现有技术相比，在图7所示技术方案中，当终端设备向AMF节点发送服务请求消息时，即终端设备发起一次服务请求流程时，由AMF节点向SMF节点发送待激活PDU session的标识，激活未来可能会被激活的PDU session，即发起一次服务请求流程即可激活未来待激活的PDU session，不需要如现有技术一样，只有当需要发送PDU session对应的数据时才去激活该PDU session，导致终端设备发起多次PDU session激活流程，本发明实施例提供的技术方案降低了终端设备发起PDU session激活流程的次数，减少了信令开销。
可选地，为了降低了AMF节点的功耗以及提高AMF节点确定终端设备的待激活PDU session的安全性，上述方法还包括：AMF节点根据预测功能相关信息开启AMF节点的预测功能。当AMF节点的预测功能开始时，AMF节点可以根据激活相关参数确定终端设备的待激活PDU session。
具体的，上述可选步骤可以参见图8中的相关描述，不再赘述。
如图8所示，为本发明实施例提供的再一激活session的方法，该方法可以包括：
步骤801：AMF节点根据第二预测功能相关信息，开启AMF节点的预测功能。
其中，步骤801中的第二预测功能相关信息可以包括但不限于以下信息中的至少一种：终端设备的设备类型，终端设备支持的业务类型，终端设备的签约数据，终端设备上报的请求消息，SMF节点是否支持AMF节点的预测功能的信息；其中，请求消息用于请求AMF节点开启AMF节点的预测功能。
需要指出的是，步骤801为可选步骤，上述提及的各参数以及步骤801的执行过程可以参见图6所示实施例中的相关描述，不再赘述。
步骤802：终端设备向AMF节点发送服务请求消息。
其中，步骤802的执行过程以及服务请求消息可参照步骤501的相关描述，在此不再赘述。
步骤803：AMF节点接收终端设备发送的服务请求消息，根据服务请求消息获得激活相关参数，根据激活相关参数确定终端设备的待激活PDU session。
其中，AMF节点根据服务请求消息获得激活相关参数的方式如步骤702所述，在 此不再赘述。
其中，AMF节点根据激活相关参数确定终端设备的待激活PDU session可以包括：
AMF节点参照步骤604中的方式2-3确定终端设备的待激活PDU session，在此不再赘述；或者，
上述服务请求消息包含终端设备请求激活的PDU session，AMF节点参照步骤604中的方式2-4确定终端设备的待激活PDU session，在此不再赘述；或者，
上述服务请求消息包含终端设备请求激活的PDU session，图8所示方案还包括：终端设备向AMF节点发送终端设备的位置信息，AMF节点接收到终端设备发送的终端设备的位置信息，AMF节点参照步骤604中的方式1-4确定终端设备的待激活PDU session，在此不再赘述；或者，
图8所示方案还包括：终端设备向AMF节点发送终端设备的位置信息，AMF节点接收到终端设备发送的终端设备的位置信息，AMF节点参照步骤604中的方式1-3确定终端设备的待激活PDU session，在此不再赘述。
步骤804：AMF节点向SMF节点发送终端设备的待激活PDU session的标识。
其中，步骤804的执行过程可参照步骤702，在此不再赘述。
步骤805：SMF节点接收终端设备的待激活PDU session的标识，根据该待激活PDU session的标识激活该待激活PDU session。
其中，步骤805的执行过程可参照步骤504，在此不再赘述。
如此，由AMF节点确定终端设备的待激活PDU session，并向SMF节点发送待激活PDU session的标识，实现待激活PDU session的激活，不需要将AMF节点接收到服务请求消息的指示信息通知给NWDA节点或PCF节点，由NWDA节点或PCF节点确定终端设备的待激活PDU session，减少了节点间的交互流程，降低了信令开销。
在再一种可行方案中，还可以由终端设备直接确定终端设备的待激活PDU session，并经AMF节点向SMF节点发送待激活PDU session的标识，激活PDU session。具体的，该可行方案的执行过程可参照图9所示方案。
如图9所示，为本发明实施例提供的再一激活session的方法，包括：
步骤901：终端设备根据第三预测功能相关参数，开启终端设备的预测功能。
其中，步骤901中的第三预测功能相关参数可以包括但不限于下述至少一种信息：终端设备的设备类型，终端设备支持的业务类型，终端设备的签约数据，以及终端设备上报的请求消息。
需要指出的是，步骤901为可选步骤，上述提及的各参数以及步骤901的执行过程可以参见图6所示实施例中的相关描述，不再赘述。
步骤902：终端设备根据激活相关参数，确定终端设备的待激活PDU session。
其中，步骤902的激活相关参数可以参见前述实施例，该激活相关参数可以通过注册流程或者终端设备配置更新流程从网络实体功能节点获取，网络实体功能节点可以为AMF节点、或NWDA节点、或PCF节点。
上述注册流程或者终端设备配置更新流程的执行过程可参照现有技术，在此不再详述。
可选的，当终端设备请求激活PDU session时，步骤902终端设备根据激活相关 参数确定终端设备的待激活PDU session的执行过程可参照步骤604中控制面节点根据激活相关参数确定终端设备的待激活PDU session的过程，如方式1-4，在此不再赘述；或者，
步骤902终端设备根据激活相关参数确定终端设备的待激活PDU session的执行过程可参照步骤604中控制面节点根据激活相关参数确定终端设备的待激活PDU session的过程，如方式1-3，在此不再赘述。
步骤903：终端设备向AMF节点发送终端设备的待激活PDU session的标识。
可选的，终端设备可以向AMF节点发送服务请求消息，该服务请求消息用于请求激活终端设备的PDU session，该服务请求消息包含终端设备请求激活的PDU session的标识和终端设备的待激活PDU session的标识；或者，该服务请求消息用于请求将终端设备从空闲态转换为连接态，且请求激活终端设备的PDU session，该服务请求消息包含终端设备请求激活的PDU session的标识和终端设备的待激活PDU session的标识。
步骤904：AMF节点接收终端设备发送的终端设备的待激活PDU session的标识，向SMF节点发送终端设备的待激活PDU session的标识。
步骤905：SMF节点从AMF节点接收终端设备的待激活PDU session，激活终端设备的待激活PDU session。
其中，步骤905的执行过程可参照步骤504，在此不再赘述。
需要说明的是，在执行图9所示方案时，AMF节点可以根据一些预测相关参数(如：终端设备的设备类型，终端设备支持的业务类型，终端设备的签约数据，终端设备上报的用于请求AMF节点开启AMF节点的预测功能的请求消息，和SMF节点是否支持AMF节点的预测功能的信息中的至少一种信息)开启AMF节点的预测功能，以便AMF节点在开启预测功能的情况下，当AMF节点接收到终端设备发送的PDU session的标识后，向SMF节点发送PDU session的标识。
与现有技术相比，在图9所示技术方案中，当终端设备向AMF节点发送服务请求消息时，即终端设备发起一次服务请求流程时，由终端设备确定终端设备的待激活PDU session，并向SMF节点发送待激活PDU session的标识，激活未来可能会被激活的PDU session，即发起一次服务请求流程即可激活未来待激活的PDU session，不需要如现有技术一样，只有当需要发送PDU session对应的数据时才去激活该PDU session，导致终端设备发起多次PDU session激活流程，本发明实施例提供的技术方案降低了终端设备发起PDU session激活流程的次数，减少了信令开销。
在再一种可行方案中，还可以由SMF节点确定终端设备的待激活PDU session，并激活该待激活PDU session。可选地，该方案的执行过程可参照图10所示方案。
如图10所示，为本发明实施例提供的再一种激活session的方法，包括：
步骤1001：SMF节点根据第四预测功能相关参数，开启SMF节点的预测功能。
其中，步骤1001中的第四预测功能相关参数可以包括但不限于下述至少一种信息：终端设备的设备类型，终端设备支持的业务类型，终端设备的签约数据，终端设备上报的用于请求开启SMF节点的预测功能的请求消息，SMF节点是否支持SMF节点的预测功能。
需要指出的是，步骤1001为可选步骤，上述提及的各参数以及步骤1001的执行过程可以参见图6所示实施例中的相关描述，不再赘述。
步骤1002：终端设备向AMF节点发送服务请求消息。
其中，步骤1002以及服务请求消息均可参照步骤501的相关描述，在此不再赘述。
步骤1003：AMF节点接收终端设备发送的服务请求消息，根据该服务请求消息向SMF节点发送指示信息。
其中，该指示信息如方案5中所述，在此不再赘述。用于指示AMF节点接收到从终端设备接收发送的服务请求消息。
该指示信息可以包含终端设备的标识，以便SMF节点根据该终端设备的标识识别出终端设备，采用上述步骤604的方式1-3确定该终端设备的待激活PDU session；或者，
该指示信息可以包含终端设备的标识和终端设备请求激活的PDU session的标识，以便SMF节点根据该终端设备的标识识别出终端设备，采用上述步骤604的方式1-4确定该终端设备的待激活PDU session。
示例性的，AMF节点根据服务请求消息向SMF节点发送指示信息可以采用如下方式：
方式一、当AMF节点根据该服务请求消息确定终端设备需要从空闲态转换为连接态时，向SMF节点发送指示信息。
方式二、上述服务请求消息作为AMF节点发送指示信息的触发条件，例如，当AMF节点接收到服务请求消息时，向SMF节点发送指示信息。
方式三、当服务请求消息包含终端设备请求激活的PDU session的标识，且AMF节点根据该服务请求消息确定终端设备需要从空闲态转换为连接态时，向SMF节点发送该指示信息。
其中，AMF节点向SMF节点发送该指示信息可以包括：将终端设备请求激活的PDU session的标识作为指示信息或指示信息中的一部分，向SMF节点发送该指示信息。
方式四：当服务请求消息包含终端设备请求激活的PDU session的标识时，AMF节点向SMF节点发送该指示信息。
其中，AMF节点向SMF节点发送该指示信息可以包括：将终端设备请求激活的PDU session作为指示信息或指示信息中的一部分，向SMF节点发送该指示信息。
其中，上述四种方式中，AMF节点识别出接收到的终端设备发送的消息为服务请求消息、终端设备从空闲态转换为连接态的方式可参照步骤502所述，在此不再赘述。
可选的，上述AMF节点向SMF节点发送指示信息具体可以为：
AMF向该AMF节点所处网络中的所有SMF节点发送该指示信息；或者，
AMF节点向当前所有没有数据传输业务的PDU session对应的SMF节点发送指示信息，如：可以AMF节点可以向除终端设备请求激活的PDU session对应的SMF节点之外的所有SMF节点发送指示信息；或者，
AMF节点向当前一部分没有数据传输需求的PDU session对应的SMF节点发送指示信息，如：AMF节点可以向除终端设备请求激活的PDU session对应的SMF节点之 外的部分SMF节点发送指示信息。
其中，终端设备的PDU session与SMF节点的对应关系预先存储在AMF节点中。
步骤1004：SMF节点从AMF节点接收指示信息，根据指示信息激活终端设备的待激活PDU session。
其中，步骤1004中SMF节点激活待激活PDU session的过程可参照图5a所示方案执行，在此不再赘述。
示例性的，SMF节点根据指示信息激活终端设备的待激活PDU session可以采用如下方式：
方式一、SMF节点根据该指示信息获得终端设备的激活相关参数，根据激活相关参数确定终端设备的待激活PDU session，并激活确定出的待激活PDU session。
其中，当指示信息包含终端设备的标识时，SMF节点根据该指示信息获得终端设备的激活相关参数，根据激活相关参数确定终端设备的待激活PDU session可以包括：SMF节点向控制面节点发送终端设备的标识，接收控制面节点根据终端设备的标识获得的终端设备的激活相关参数，采用步骤604中的方式2-3确定终端设备的待激活PDU session。
当指示信息包含终端设备的标识和终端设备请求激活的PDU session的标识时，SMF节点根据该指示信息获得终端设备的激活相关参数，根据激活相关参数确定终端设备的待激活PDU session可以包括：SMF节点向控制面节点发送终端设备的标识，接收控制面节点根据终端设备的标识获得的终端设备的激活相关参数，采用步骤604中的方式2-4确定终端设备的待激活PDU session。；
当指示信息包含终端设备的标识、终端设备的位置信息和终端设备请求激活的PDU session的标识时，SMF节点根据该指示信息获得终端设备的激活相关参数，根据激活相关参数确定终端设备的待激活PDU session可以包括：SMF节点向控制面节点发送终端设备的标识，接收控制面节点根据终端设备的标识获得的终端设备的激活相关参数，采用步骤604中的方式1-4确定终端设备的待激活PDU session。
当指示信息终端设备的标识和终端设备的位置信息时，SMF节点根据该指示信息获得终端设备的激活相关参数，根据激活相关参数确定终端设备的待激活PDU session可以包括：SMF节点向控制面节点发送终端设备的标识，接收控制面节点根据终端设备的标识获得的终端设备的激活相关参数，采用步骤604中的方式1-3确定终端设备的待激活PDU session。
其中，上述控制面节点根据终端设备的标识获得的终端设备的激活相关参数的方式可参照图5方案中的描述，在此不再赘述。
方式二、上述指示信息作为SMF节点确定终端设备的待激活PDU session的触发条件，例如，当SMF节点确定接收到该指示信息时，确定终端设备的待激活PDU session，并激活确定出的待激活PDU session。
可选的，上述SMF节点确定终端设备的待激活PDU session包括：SMF节点根据激活相关参数确定激活终端设备的待激活PDU session。
其中，该激活相关参数可以由SMF节点从NWDA节点或者PCF节点处实时获取，或者定期订阅。SMF节点根据激活相关参数确定终端设备的待激活PDU session的执 行过程可参照步骤604，例如，方式2-3，在此不再赘述。
方式三、SMF节点从指示信息中获取终端设备请求激活的PDU session，将终端设备请求激活的PDU session作为待激活PDU session，激活该待激活PDU session。
需要说明的是，在实现图10所示方案的过程中，步骤1001可以在步骤1004之前的任何步骤执行，不局限于图10所示的执行顺序。
与现有技术相比，在图10所示技术方案中，当终端设备向AMF节点发送服务请求消息时，即终端设备发起一次服务请求流程时，由SMF确定终端设备的待激活PDU session，并激活该待激活PDU session，激活，即发起一次服务请求流程即可激活未来可能会被激活的PDU session，不需要如现有技术一样，只有当需要发送PDU session对应的数据时才去激活该PDU session，导致终端设备发起多次PDU session激活流程，本发明实施例提供的技术方案降低了终端设备发起PDU session激活流程的次数，减少了信令开销。
此外，在执行图10所示方案时，AMF节点可以根据一些预测相关参数(如：终端设备的设备类型，终端设备支持的业务类型，终端设备的签约数据，终端设备上报的用于请求AMF节点开启AMF节点的预测功能的请求消息，和SMF节点是否支持AMF节点的预测功能的信息中的至少一种信息)开启AMF节点的预测功能，以便AMF节点在开启预测功能的情况下，向SMF节点发送指示信息。
需要说明的是，上述各方法实施例仅示出了激活一个待激活PDU session，激活多个待激活PDU session可参照上述方法实施例提供的方案，在此不再赘述。
上述主要从各个节点之间交互的角度对本发明实施例提供的方案进行了介绍。可以理解的是，各个节点，例如控制面节点(NWDA节点或PCF节点)、AMF节点、SMF节点、终端设备为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的算法步骤，本发明能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
本发明实施例可以根据上述方法示例对控制面节点(NWDA节点或PCF节点)、AMF节点、SMF节点、终端设备进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本发明实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
在采用对应各个功能划分各个功能模块的情况下，图11示出了控制面节点的一种可能的组成示意图，如图11所示，该控制面节点可以为上述和实施例中涉及的NWDA节点或者PCF节点，可以包括：接收单元110、发送单元111、处理单元112、开启单元113；
其中，接收单元110，用于支持控制面节点执行图5所示步骤503、图6中的步骤603。
发送单元111，用于支持控制面节点执行图5中的步骤503、图6中的步骤605。
处理单元112，用于支持控制面节点执行图6所示步骤604。
开启单元113，用于支持控制面节点执行图6所示步骤601。
需要说明的是，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。本发明实施例提供的控制器，用于执行上述激活session的方法，因此可以达到与上述激活session的方法相同的效果。
在采用集成的单元的情况下，图12示出了一种装置，该装置以芯片形态存在，用于执行上述实施例中控制面节点所执行的动作。如图12所示，该装置可以包括：处理模块120和通信模块121。
处理模块120用于对装置的动作进行控制管理，例如，处理模块120用于支持该装置执行图6中的步骤601、步骤604、和/或用于本文所描述的技术的其它过程。通信模块121用于支持该装置与其他网络实体的通信，例如与图2示出的功能模块或网络实体之间的通信。该装置还可以包括存储模块122，用于存储程序代码和数据。
其中，处理模块120可以是处理器或控制器。其可以实现或执行结合本发明公开内容所描述的各种示例性地逻辑方框，模块和电路。处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。通信模块121可以是收发器、收发电路或通信接口等。存储模块122可以是存储器。
当处理模块120为处理器，通信模块121为通信接口，存储模块122为存储器时，本装置可以为图3所示的控制面节点。
在采用对应各个功能划分各个功能模块的情况下，图13示出了AMF节点的一种可能的组成示意图，如图13所示，该AMF节点可以包括：接收单元130、发送单元131、处理单元132、开启单元133；
其中，接收单元130，用于支持AMF节点执行步骤502、步骤5042、步骤5045、步骤603、步骤702、步骤802、步骤904、步骤1003。
发送单元131，用于支持AMF节点执行步骤502、步骤5052、步骤5042、步骤5045、步骤603、步骤702、步骤804、步骤904、步骤1003。
处理单元132，用于支持AMF节点执行步骤803。
开启单元133，用于支持AMF节点执行步骤801。
需要说明的是，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。本发明实施例提供的控制器，用于执行上述激活session的方法，因此可以达到与上述激活session的方法相同的效果。
在采用集成的单元的情况下，图14示出了一种装置，该装置以芯片形态存在，用于执行上述实施例中AMF节点的动作。如图14所示，该装置可以包括：处理模块140和通信模块141。
处理模块140用于对装置的动作进行控制管理，例如，处理模块140用于支持该装置执行步骤801、步骤803。通信模块141用于支持该装置与其他网络实体的通信，例如与图2示出的功能模块或网络实体之间的通信。该装置还可以包括存储模块142，用于存程序代码和数据。
其中，处理模块140可以是处理器或控制器。其可以实现或执行结合本发明公开 内容所描述的各种示例性地逻辑方框，模块和电路。处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。通信模块141可以是收发器、收发电路或通信接口等。存储模块142可以是存储器。
在采用对应各个功能划分各个功能模块的情况下，图15示出了终端设备的一种可能的组成示意图，如图15所示，该终端设备可以包括：确定单元150、发送单元151、开启单元152、获取单元153；
其中，确定单元150，用于支持终端设备执行步骤902。
发送单元151，用于支持终端设备执行步骤501、步骤602、步骤701、步骤802、步骤903、步骤1002。
开启单元152，用于支持终端设备执行步骤901。
获取单元153，用于支持终端设备获取激活相关参数。
需要说明的是，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。本发明实施例提供的控制器，用于执行上述激活session的方法，因此可以达到与上述激活session的方法相同的效果。
在采用集成的单元的情况下，图16示出了一种装置，该装置以芯片形态存在，该装置用于执行上述实施例中终端设备的动作。如图16所示，该装置可以包括：处理模块160和通信模块161。
处理模块160用于对该装置的动作进行控制管理，例如，处理模块160用于支持该装置执行步骤901、步骤902、和/或用于本文所描述的技术的其它过程。通信模块161用于支持该装置与其他网络实体的通信，例如与图2示出的功能模块或网络实体之间的通信。该装置还可以包括存储模块162，用于存储终端设备的程序代码和数据。
其中，处理模块160可以是处理器或控制器。其可以实现或执行结合本发明公开内容所描述的各种示例性地逻辑方框，模块和电路。处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。通信模块161可以是收发器、收发电路或通信接口等。存储模块162可以是存储器。
当处理模块160为处理器，通信模块161为通信接口，存储模块162为存储器时，本发明实施例所涉及的装置可以为图4所示的终端设备。
在采用对应各个功能划分各个功能模块的情况下，图17示出了SMF节点的一种可能的组成示意图，如图17所示，该SMF节点可以为上述和实施例中涉及的NWDA节点或者PCF节点，可以包括：接收单元170、激活单元171、确定单元172、开启单元173、发送单元174；
其中，接收单元170，用于支持SMF节点执行步骤504、步骤5045、步骤605、步骤703、步骤805、步骤905。
激活单元171，用于支持SMF节点执行步骤504、步骤606、步骤703、步骤805、步骤905、步骤1004。
确定单元172，用于支持SMF节点执行根据激活相关参数确定终端设备的待激活PDU session的步骤。
开启单元173，用于支持SMF节点执行步骤1001。
发送单元174，用于支持SMF节点执行步骤5041、步骤5046、步骤5048。
需要说明的是，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。本发明实施例提供的控制器，用于执行上述激活session的方法，因此可以达到与上述激活session的方法相同的效果。
在采用集成的单元的情况下，图18示出了一种装置，该装置以芯片形态存在，该装置用于执行上述实施例中所涉及的SMF节点的动作。如图18所示，该SMF节点可以包括：处理模块180和通信模块181。
处理模块180用于对该装置的动作进行控制管理，例如，处理模块180用于支持该装置执行确定终端设备的待激活PDU session的步骤、开启终端设备的预测功能的步骤、和/或用于本文所描述的技术的其它过程。通信模块181用于支持该装置与其他网络实体的通信，例如与图2示出的功能模块或网络实体之间的通信。该装置还可以包括存储模块182，用于存储SMF节点的程序代码和数据。
其中，处理模块180可以是处理器或控制器。其可以实现或执行结合本发明公开内容所描述的各种示例性地逻辑方框，模块和电路。处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。通信模块181可以是收发器、收发电路或通信接口等。存储模块182可以是存储器。
通过以上的实施方式的描述，所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述模块或单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个装置，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是一个物理单元或多个物理单元，即可以位于一个地方，或者也可以分布到多个不同地方。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个可读取存储介质中。基于这样的理解，本发明实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该软件产品存储在一个存储介质中，包括若干指令用以使得一个设备(可以是单片机，芯片等)或处理器(processor)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何在本发明揭露的技术范围内的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (34)

  1. 一种激活会话session的方法，其特征在于，包括：
    控制面节点从接入和移动性管理功能AMF节点接收指示信息，所述指示信息用于指示所述AMF节点接收到终端设备发送的服务请求消息；
    所述控制面节点根据所述指示信息，向会话管理功能SMF节点或者所述AMF节点发送所述终端设备的待激活PDU session的标识。
  2. 根据权利要求1所述的激活sesion的方法，其特征在于，所述控制面节点根据所述指示信息，向会话管理功能SMF节点或者所述AMF节点发送所述终端设备的待激活PDU session的标识，包括：
    所述控制面节点根据所述指示信息获得所述终端设备的激活相关参数；
    所述控制面节点根据所述激活相关参数确定所述终端设备的待激活PDU session；
    所述控制面节点向所述SMF节点或者所述AMF节点发送确定出的所述终端设备的待激活PDU session的标识。
  3. 根据权利要求2所述的激活sesion的方法，其特征在于，所述控制面节点根据所述激活相关参数确定所述终端设备的待激活PDU session，包括：
    所述激活相关参数包括位置区域与所述终端设备的PDU session的对应关系，所述控制面节点根据所述终端设备当前所处位置区域以及所述对应关系，将所述终端设备当前所处位置区域对应的PDU session确定为所述待激活PDU session；或者，
    所述激活相关参数包括所述终端设备的至少一个PDU session的初始激活时刻以及激活周期，所述控制面节点根据所述至少一个PDU session的初始激活时刻以及激活周期确定所述至少一个PDU session的预估激活时刻，将所述至少一个PDU session中预估激活时刻与当前时刻的时间差小于或等于第一预设阈值的PDU session确定为所述待激活PDU session，其中，所述预估激活时刻为所述当前时刻之后的时刻；或者，
    所述激活相关参数包括所述终端设备的至少一个PDU session的固定激活时刻，所述控制面节点将所述至少一个PDU session中固定激活时刻与当前时刻的时间差小于或等于第二预设阈值的PDU session确定为所述待激活PDU session，其中，所述固定激活时刻为所述当前时刻之后的时刻；或者，
    所述激活相关参数包括所述终端设备的PDU session与关联PDU session之间的对应关系，所述控制面节点根据所述终端设备的PDU session与关联PDU session之间的对应关系、以及所述终端设备请求激活的PDU session，将所述终端设备请求激活的PDU session对应的关联PDU session确定为待激活PDU session，其中，所述终端设备的PDU session与关联PDU session之间的对应关系中所述终端设备的PDU session对应的关联PDU session为：在所述终端设备的PDU session被激活后的预设时间内被激活的PDU session。
  4. 根据权利要求1-3任一项所述的激活sesion的方法，其特征在于，所述方法还包括：
    所述控制面节点根据第一预测功能相关信息，开启所述控制面节点的预测功能；
    所述第一预测功能相关信息包括以下信息中的至少一种：所述终端设备的设备类 型，所述终端设备支持的业务类型，所述终端设备的签约数据，所述终端设备上报的请求消息，所述SMF节点是否支持所述控制面节点的预测功能的信息，以及所述AMF节点是否支持所述控制面节点的预测功能的信息；
    其中，所述请求消息用于请求所述控制面节点开启所述控制面节点的预测功能。
  5. 根据权利要求1-4任一项所述的激活sesion的方法，其特征在于，所述控制面节点为网络数据分析功能NWDA节点或者策略控制功能PCF节点。
  6. 一种激活会话session的激活sesion的方法，其特征在于，包括：
    接入和移动性管理功能AMF节点接收终端设备发送的服务请求消息；
    所述AMF节点根据所述服务请求消息，向控制面节点发送指示信息，所述指示信息用于指示所述AMF节点接收到所述终端设备发送的服务请求消息。
  7. 根据权利要求6所述的激活sesion的方法，其特征在于，所述服务请求消息包含所述终端设备请求激活的PDU session的标识；所述方法还包括：
    所述AMF节点向所述控制面节点发送所述终端设备请求激活的PDU session的标识；或者，
    所述AMF根据所述终端设备请求激活的PDU session的标识确定所述终端设备请求激活的PDU session的数据网络名称DNN，并向所述控制面节点发送所述终端设备请求激活的PDU session的DNN；或者，
    所述AMF节点根据所述终端设备请求激活的PDU session的标识确定所述终端设备请求激活的PDU session的网络切片选择辅助信息NSSAI，并向所述控制面节点发送所述终端设备请求激活的PDU session的NSSAI；或者，
    所述AMF节点根据所述终端设备请求激活的PDU session的标识确定所述终端设备请求激活的PDU session的DNN和NSSAI，并向所述控制面节点发送所述终端设备请求激活的PDU session的NSSAI和DNN。
  8. 根据权利要求6或7所述的激活sesion的方法，其特征在于，所述方法还包括：
    所述AMF节点从所述控制面节点接收所述终端设备的待激活PDU session的标识；
    所述AMF节点向会话管理功能SMF节点发送激活请求消息；
    其中，所述激活请求消息包含所述终端设备的待激活PDU session的标识，所述激活请求消息用于请求所述SMF节点激活所述待激活PDU session。
  9. 根据权利要求6-8任一项所述的激活sesion的方法，其特征在于，所述控制面节点为网络数据分析功能NWDA节点，或者策略控制功能PCF节点。
  10. 一种激活会话session的激活sesion的方法，其特征在于，包括：
    接入和移动性管理功能AMF节点接收终端设备发送的服务请求消息；
    所述AMF节点根据所述服务请求消息，向会话管理功能SMF节点发送所述终端设备的待激活PDU session的标识。
  11. 根据权利要求10所述的激活sesion的方法，其特征在于，所述AMF节点根据所述服务请求消息，向SMF节点发送所述终端设备的待激活PDU session的标识，包括：
    所述AMF节点根据所述服务请求消息获得所述终端设备的激活相关参数；
    所述AMF节点根据所述激活相关参数确定所述终端设备的待激活PDU session；
    所述AMF节点向所述SMF节点发送所述终端设备的待激活PDU session的标识。
  12. 根据权利要求11所述的激活sesion的方法，其特征在于，所述AMF节点根据所述激活相关参数确定所述终端设备的待激活PDU session包括：
    所述激活相关参数包括位置区域与所述终端设备的PDU session的对应关系，所述AMF节点根据所述终端设备当前所处位置区域以及所述对应关系，将所述终端设备当前所处位置区域对应的PDU session确定为所述待激活PDU session；或者，
    所述激活相关参数包括：所述终端设备的至少一个PDU session的初始激活时刻以及激活周期，所述AMF节点根据所述至少一个PDU session的初始激活时刻以及激活周期确定所述至少一个PDU session的预估激活时刻，将所述至少一个PDU session中预估激活时刻与当前时刻的时间差小于或等于第一预设阈值的PDU session确定为所述待激活PDU session，其中，所述预估激活时刻为所述当前时刻之后的时刻；或者，
    所述激活相关参数包括：所述终端设备的至少一个PDU session的固定激活时刻，所述AMF节点将所述至少一个PDU session中固定激活时刻与当前时刻的时间差小于或等于第二预设阈值的PDU session确定为所述待激活PDU session，其中，所述固定激活时刻为所述当前时刻之后的时刻；或者，
    所述激活相关参数包括所述终端设备的PDU session与关联PDU session之间的对应关系，所述AMF节点根据所述终端设备的PDU session与关联PDU session之间的对应关系、以及所述终端设备请求激活的PDU session，将所述终端设备请求激活的PDU session对应的关联PDU session确定为待激活PDU session，其中，所述终端设备的PDU session与关联PDU session之间的对应关系中所述终端设备的PDU session对应的关联PDU session为：在所述终端设备的PDU session被激活后的预设时间内被激活的PDU session。
  13. 根据权利要求10-12任一项所述的激活sesion的方法，其特征在于，所述方法还包括：
    所述AMF节点根据第二预测功能相关信息，开启所述AMF节点的预测功能；
    所述第二预测功能相关信息包括以下信息中的至少一种：所述终端设备的设备类型，所述终端设备支持的业务类型，所述终端设备的签约数据，所述终端设备上报的请求消息，以及所述AMF节点是否支持所述控制面节点的预测功能的信息；
    其中，所述请求消息用于请求所述控制面节点开启所述控制面节点的预测功能。
  14. 一种激活会话session的激活sesion的方法，其特征在于，包括：
    终端设备根据激活相关参数，确定所述终端设备的待激活PDU session；
    所述终端设备向接入和移动性管理功能AMF节点发送所述终端设备的待激活PDU session的标识。
  15. 根据权利要求14所述的激活sesion的方法，其特征在于，所述终端设备根据激活相关参数，确定所述终端设备的待激活PDU session，包括：
    所述激活相关参数包括位置区域与所述终端设备的PDU session的对应关系，所述终端设备根据所述终端设备当前所处位置区域以及所述对应关系，将所述终端设备当前所处位置区域对应的PDU session确定为所述待激活PDU session；或者，
    所述激活相关参数包括：所述终端设备的至少一个PDU session的初始激活时刻以及激活周期，所述终端设备根据所述至少一个PDU session的初始激活时刻以及激活周期确定所述至少一个PDU session的预估激活时刻，将所述至少一个PDU session中预估激活时刻与当前时刻的时间差小于或等于第一预设阈值的PDU session确定为所述待激活PDU session，其中，所述预估激活时刻为所述当前时刻之后的时刻；或者，
    所述激活相关参数包括：所述终端设备的至少一个PDU session的固定激活时刻，所述终端设备将所述至少一个PDU session中固定激活时刻与当前时刻的时间差小于或等于第二预设阈值的PDU session确定为所述待激活PDU session，其中，所述固定激活时刻为所述当前时刻之后的时刻；或者，
    所述激活相关参数包括所述终端设备的PDU session与关联PDU session之间的对应关系，所述终端设备根据所述终端设备的PDU session与关联PDU session之间的对应关系、以及所述终端设备请求激活的PDU session，将所述终端设备请求激活的PDU session对应的关联PDU session确定为待激活PDU session，其中，所述终端设备的PDU session与关联PDU session之间的对应关系中所述终端设备的PDU session对应的关联PDU session为：在所述终端设备的PDU session被激活后的预设时间内被激活的PDU session。
  16. 根据权利要求14或15所述的激活sesion的方法，其特征在于，在所述终端设备根据激活相关参数，确定所述终端设备的待激活PDU session之前，所述方法还包括：
    所述终端设备根据第三预测功能相关信息，开启所述终端设备的预测功能；
    所述第三预测功能相关信息包括以下信息中的至少一种：所述终端设备的设备类型，所述终端设备支持的业务类型，以及所述终端设备的签约数据。
  17. 根据权利要求14-16任一项所述的激活sesion的方法，其特征在于，所述方法还包括：
    所述终端设备通过注册流程或者终端设备配置更新流程从网络实体功能节点获取所述激活相关参数；
    其中，所述网络实体功能节点为所述AMF节点、或网络数据分析功能NWDA节点、或策略控制功能PCF节点。
  18. 一种控制面节点，其特征在于，包括：
    接收单元，用于从接入和移动性管理功能AMF节点接收指示信息，所述指示信息用于指示所述AMF节点接收到终端设备发送的服务请求消息；
    处理单元，用于根据所述接收单元接收到的指示信息，通过发送单元向会话管理功能SMF节点或者所述AMF节点发送所述终端设备的待激活PDU session的标识。
  19. 根据权利要求18所述的控制面节点，其特征在于，所述处理单元，具体用于：
    根据所述接收单元接收到的指示信息获得所述终端设备的激活相关参数；
    根据所述激活相关参数确定所述终端设备的待激活PDU session，通过所述发送单元向所述SMF节点或者所述AMF节点发送所述终端设备的待激活PDU session的标识。
  20. 根据权利要求19所述的控制面节点，其特征在于，
    所述激活相关参数包括位置区域与所述终端设备的PDU session的对应关系，所述处理单元具体用于根据所述终端设备当前所处位置区域以及所述对应关系，将所述终端设备当前所处位置区域对应的PDU session确定为所述待激活PDU session；或者，
    所述激活相关参数包括所述终端设备的至少一个PDU session的初始激活时刻以及激活周期，所述处理单元，具体用于根据所述至少一个PDU session的初始激活时刻以及激活周期确定所述至少一个PDU session的预估激活时刻，将所述至少一个PDU session中预估激活时刻与当前时刻的时间差小于或等于第一预设阈值的PDUsession确定为所述待激活PDU session，其中，所述预估激活时刻为所述当前时刻之后的时刻；或者，
    所述激活相关参数包括所述终端设备的至少一个PDU session的固定激活时刻，所述处理单元，具体用于将所述至少一个PDU session中固定激活时刻与当前时刻的时间差小于或等于第二预设阈值的PDU session确定为所述待激活PDU session，其中，所述固定激活时刻为所述当前时刻之后的时刻；或者，
    所述激活相关参数包括所述终端设备的PDU session与关联PDU session之间的对应关系，所述处理单元，具体用于根据所述终端设备的PDU session与关联PDU session之间的对应关系、以及所述终端设备请求激活的PDU session，将所述终端设备请求激活的PDU session对应的关联PDU session确定为待激活PDU session，其中，所述终端设备的PDU session与关联PDU session之间的对应关系中所述终端设备的PDU session对应的关联PDU session为：在所述终端设备的PDU session被激活后的预设时间内被激活的PDU session。
  21. 根据权利要求18-20任一项所述的控制面节点，其特征在于，所述控制面节点还包括：
    开启单元，用于根据第一预测功能相关信息，开启所述控制面节点的预测功能；
    所述第一预测功能相关信息包括以下信息中的至少一种：所述终端设备的设备类型，所述终端设备支持的业务类型，所述终端设备的签约数据，所述终端设备上报的请求消息，所述SMF节点是否支持所述控制面节点的预测功能的信息，以及所述AMF节点是否支持所述控制面节点的预测功能的信息；
    其中，所述请求消息用于请求所述控制面节点开启所述控制面节点的预测功能。
  22. 根据权利要求18-21任一项所述的控制面节点，其特征在于，所述控制面节点为网络数据分析功能NWDA节点或者策略控制功能PCF节点。
  23. 一种接入和移动性管理功能AMF节点，其特征在于，包括：
    接收单元，用于接收终端设备发送的服务请求消息；
    发送单元，用于根据所述接收单元接收的服务请求消息，向控制面节点发送指示信息，所述指示信息用于指示所述AMF节点接收到所述终端设备发送的服务请求消息。
  24. 根据权利要求23所述的AMF节点，其特征在于，所述服务请求消息包含所述终端设备请求激活的PDU session的标识；
    所述发送单元，还用于向所述控制面节点发送所述终端设备请求激活的PDU session的标识；或者，
    所述AMF根据所述终端设备请求激活的PDU session的标识确定所述终端设备请求激活的PDU session的数据网络名称DNN，并向所述控制面节点发送所述终端设备请求激活的PDU session的DNN；或者，
    所述AMF节点根据所述终端设备请求激活的PDU session的标识确定所述终端设备请求激活的PDU session的网络切片选择辅助信息NSSAI，并向所述控制面节点发送所述终端设备请求激活的PDU session的NSSAI；或者，
    所述AMF节点根据所述终端设备请求激活的PDU session的标识确定所述终端设备请求激活的PDU session的DNN和NSSAI，并向所述控制面节点发送所述终端设备请求激活的PDU session的NSSAI和DNN。
  25. 根据权利要求23或24所述的AMF节点，其特征在于，
    所述接收单元，还用于从所述控制面节点接收所述终端设备的待激活PDU session的标识；
    所述发送单元，还用于向会话管理功能SMF节点发送激活请求消息；
    其中，所述激活请求消息包含所述终端设备的待激活PDU session的标识，所述激活请求消息用于请求所述SMF节点激活所述待激活PDU session。
  26. 根据权利要求23-25任一项所述的AMF节点，其特征在于，所述控制面节点为网络数据分析功能NWDA节点，或者策略控制功能PCF节点。
  27. 一种接入和移动性管理功能AMF节点，其特征在于，包括：
    接收单元，用于接收终端设备发送的服务请求消息；
    处理单元，用于根据所述接收单元接收到的服务请求消息，通过发送单元向会话管理功能SMF节点发送所述终端设备的待激活PDU session的标识。
  28. 根据权利要求27所述的AMF节点，其特征在于，所述处理单元，具体用于：
    根据所述服务请求消息获得所述终端设备的激活相关参数；
    根据所述激活相关参数确定所述终端设备的待激活PDU session，通过所述发送单元向所述SMF节点发送所述待激活PDU session的标识。
  29. 根据权利要求28所述的AMF节点，其特征在于，
    所述激活相关参数包括位置区域与所述终端设备的PDU session的对应关系，所述处理单元具体用于根据所述终端设备当前所处位置区域以及所述对应关系，将与所述终端设备当前所处位置区域对应的PDU session确定为所述待激活PDU session；或者，
    所述激活相关参数包括：所述终端设备的至少一个PDU session的初始激活时刻以及激活周期，所述处理单元，具体用于根据所述至少一个PDU session的初始激活时刻以及激活周期确定所述至少一个PDU session的预估激活时刻，将所述至少一个PDU session中预估激活时刻与当前时刻的时间差小于或等于第一预设阈值的PDU session确定为所述待激活PDU session，其中，所述预估激活时刻为所述当前时刻之后的时刻；或者，
    所述激活相关参数包括：所述终端设备的至少一个PDU session的固定激活时刻， 所述处理单元，具体用于将所述至少一个PDU session中固定激活时刻与当前时刻的时间差小于或等于第二预设阈值的PDU session确定为所述待激活PDU session，其中，所述固定激活时刻为所述当前时刻之后的时刻；或者，
    所述激活相关参数包括所述终端设备的PDU session与关联PDU session之间的对应关系，所述处理单元，具体用于根据所述终端设备的PDU session与关联PDU session之间的对应关系、以及所述终端设备请求激活的PDU session，将所述终端设备请求激活的PDU session对应的关联PDU session确定为待激活PDU session，其中，所述终端设备的PDU session与关联PDU session之间的对应关系中所述终端设备的PDU session对应的关联PDU session为：在所述终端设备的PDU session被激活后的预设时间内被激活的PDU session。
  30. 根据权利要求27-29任一项所述的AMF节点，其特征在于，所述AMF节点还包括：
    开启单元，用于根据第二预测功能相关信息，开启所述AMF节点的预测功能；
    所述第二预测功能相关信息包括以下信息中的至少一种：所述终端设备的设备类型，所述终端设备支持的业务类型，所述终端设备的签约数据，所述终端设备上报的请求消息，以及所述AMF节点是否支持所述控制面节点的预测功能的信息；
    其中，所述请求消息用于请求所述控制面节点开启所述控制面节点的预测功能。
  31. 一种终端设备，其特征在于，包括：
    确定单元，用于根据激活相关参数，确定所述终端设备的待激活PDU session；
    发送单元，用于向接入和移动性管理功能AMF节点发送所述终端设备的待激活PDU session的标识。
  32. 根据权利要求31所述的终端设备，其特征在于，
    所述激活相关参数包括位置区域与所述终端设备的PDU session的对应关系，所述确定单元具体用于根据所述终端设备当前所处位置区域以及所述对应关系，将所述终端设备当前所处位置区域对应的PDU session确定为所述待激活PDU session；或者，
    所述激活相关参数包括：所述终端设备的至少一个PDU session的初始激活时刻以及激活周期，所述确定单元，具体用于根据所述至少一个PDU session的初始激活时刻以及激活周期确定所述至少一个PDU session的预估激活时刻，将所述至少一个PDU session中预估激活时刻与当前时刻的时间差小于或等于第一预设阈值的PDUsession确定为所述待激活PDU session，其中，所述预估激活时刻为所述当前时刻之后的时刻；或者，
    所述激活相关参数包括：所述终端设备的至少一个PDU session的固定激活时刻，所述确定单元，具体用于将所述至少一个PDU session中固定激活时刻与当前时刻的时间差小于或等于第二预设阈值的PDU session确定为所述待激活PDU session，其中，所述固定激活时刻为所述当前时刻之后的时刻；或者，
    所述激活相关参数包括所述终端设备的PDU session与关联PDU session之间的对应关系，所述终端设备根据所述终端设备的PDU session与关联PDU session之间的对应关系、以及所述终端设备请求激活的PDU session，将所述终端设备请求激活的 PDU session对应的关联PDU session确定为待激活PDU session，其中，所述终端设备的PDU session与关联PDU session之间的对应关系中所述终端设备的PDU session对应的关联PDU session为：在所述终端设备的PDU session被激活后的预设时间内被激活的PDU session。
  33. 根据权利要求31或32所述的终端设备，其特征在于，所述终端设备还包括：
    开启单元，用于在所述确定单元根据激活相关参数，确定所述终端设备的待激活PDU session之前，根据第三预测功能相关信息，开启所述终端设备的预测功能；
    所述第三预测功能相关信息包括以下信息中的至少一种：所述终端设备的设备类型，所述终端设备支持的业务类型，以及所述终端设备的签约数据。
  34. 根据权利要求31-33任一项所述的终端设备，其特征在于，所述终端设备还包括：
    获取单元，用于通过注册流程或者终端设备配置更新流程从网络实体功能节点获取所述激活相关参数；
    其中，所述网络实体功能节点为所述AMF节点、或网络数据分析功能NWDA节点、或策略控制功能PCF节点。
PCT/CN2018/097669 2017-07-28 2018-07-27 一种激活session的方法、设备及系统 WO2019020117A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP18838478.8A EP3648506B1 (en) 2017-07-28 2018-07-27 Method, device and system for activating session
US16/773,025 US11317451B2 (en) 2017-07-28 2020-01-27 Session activation method, device, and system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710633686.1A CN109548092B (zh) 2017-07-28 2017-07-28 一种激活session的方法、设备及系统
CN201710633686.1 2017-07-28

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US16/773,025 Continuation US11317451B2 (en) 2017-07-28 2020-01-27 Session activation method, device, and system

Publications (1)

Publication Number Publication Date
WO2019020117A1 true WO2019020117A1 (zh) 2019-01-31

Family

ID=65039992

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/097669 WO2019020117A1 (zh) 2017-07-28 2018-07-27 一种激活session的方法、设备及系统

Country Status (4)

Country Link
US (1) US11317451B2 (zh)
EP (1) EP3648506B1 (zh)
CN (1) CN109548092B (zh)
WO (1) WO2019020117A1 (zh)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020164180A1 (en) * 2019-02-13 2020-08-20 Telefonaktiebolaget Lm Ericsson (Publ) Secondary authorization at pdu session establishment for home routed roaming
CN113132170A (zh) * 2019-12-30 2021-07-16 中兴通讯股份有限公司 数据管理方法及系统、关联子系统和计算机可读介质
US20220132602A1 (en) * 2019-01-15 2022-04-28 Datang Mobile Communications Equipment Co.,Ltd. Pdu session activation method and apparatus, and paging method and apparatus
US11570826B2 (en) * 2019-08-12 2023-01-31 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Method and device for establishing session
KR102667117B1 (ko) 2019-09-30 2024-05-17 지티이 코포레이션 네트워크 데이터 수집 방법, 장치 및 시스템

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10616934B2 (en) * 2017-12-08 2020-04-07 Comcast Cable Communications, Llc User plane function selection for isolated network slice
US11991603B2 (en) * 2019-01-10 2024-05-21 Telefonaktiebolagget LM Ericsson (Publ) Methods and apparatuses for facilitating roaming of terminal device
EP3928491A1 (en) * 2019-02-18 2021-12-29 Telefonaktiebolaget Lm Ericsson (Publ) Methods and apparatuses for transferring restoration context data
EP4000319A4 (en) * 2019-08-22 2022-09-07 Samsung Electronics Co., Ltd. METHOD AND APPARATUS FOR MANAGING DOWNLINK AND UPLINK COLLISION IN A WIRELESS COMMUNICATIONS NETWORK
JP7443539B2 (ja) 2020-01-31 2024-03-05 ノキア テクノロジーズ オサケユイチア Ｒａｎノードおよびコアネットワークの間のシグナリングメッセージを低減するための装置、システム、方法、および非一時的コンピュータ可読媒体
CN113811021A (zh) * 2020-06-16 2021-12-17 华为技术有限公司 通信方法和装置
CN111918325B (zh) * 2020-06-28 2023-11-28 珠海世纪鼎利科技股份有限公司 Nsa架构下5g用户驻留时长获取方法、装置及设备
EP4302527A1 (en) * 2021-03-05 2024-01-10 Telefonaktiebolaget LM Ericsson (publ) Method and apparatus for discontinuous reception
CN113225124B (zh) * 2021-05-07 2022-04-19 广州爱浦路网络技术有限公司 卫星终端端对端通信链路的建立方法、系统、装置及介质

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007080558A2 (en) * 2006-01-16 2007-07-19 Zlango Ltd. Communications network system and methods for using same
CN101394588A (zh) * 2007-09-21 2009-03-25 华为技术有限公司 一种实现分组域中会话业务的方法和系统
CN103517452A (zh) * 2013-09-29 2014-01-15 华为技术有限公司 一种业务连接建立方法及装置
CN105813079A (zh) * 2016-05-17 2016-07-27 工业和信息化部电信研究院 一种终端接入方法

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10015729B2 (en) * 2008-11-17 2018-07-03 Telefonaktiebolaget L M Ericsson (Publ) Providing access to a GPRS network
EP2359610B1 (en) * 2008-11-17 2013-10-16 Telefonaktiebolaget L M Ericsson (PUBL) Providing access to a gprs network
CN101998567B (zh) * 2009-08-21 2014-09-10 中兴通讯股份有限公司 终端转为连接态时更改服务网关的连接激活方法及系统
WO2017019118A1 (en) * 2015-07-28 2017-02-02 Intel Corporation Network attach process through a combined general packet radio service (gprs) attach message and a packet data protocol (pdp) context activation procedure
US10028128B2 (en) * 2016-04-29 2018-07-17 Motorola Mobility Llc Procedures to support network slicing in a wireless communication system
MX2019001997A (es) * 2016-08-19 2019-06-13 Nec Corp Metodo para la activacion o desactivacion por conexion del plano de usuario por sesion.
WO2018128528A1 (ko) * 2017-01-09 2018-07-12 엘지전자(주) 무선 통신 시스템에서 pdu 세션 관리 방법 및 이를 위한 장치
US10375665B2 (en) * 2017-02-06 2019-08-06 Huawei Technologies Co., Ltd. Method and apparatus for supporting access control and mobility management
US10397892B2 (en) * 2017-02-06 2019-08-27 Huawei Technologies Co., Ltd. Network registration and network slice selection system and method
US10368334B2 (en) * 2017-03-17 2019-07-30 Ofinno Technologies, Llc Radio access network paging area configuration
US10264622B2 (en) * 2017-03-17 2019-04-16 Ofinno Technologies, Llc Inactive state data forwarding
US10349380B2 (en) * 2017-03-17 2019-07-09 Ofinno, Llc Radio access network area information
US10849022B2 (en) * 2017-03-17 2020-11-24 Ofinno, Llc Cell selection of inactive state wireless device
WO2018174525A1 (ko) * 2017-03-20 2018-09-27 엘지전자(주) 무선 통신 시스템에서 계층간 상호작용 방법 및 이를 위한 장치
WO2018177656A1 (en) * 2017-03-31 2018-10-04 Telefonaktiebolaget Lm Ericsson (Publ) Application topology aware user plane selection in nr and 5gc
WO2018177638A1 (en) * 2017-03-31 2018-10-04 Telefonaktiebolaget Lm Ericsson (Publ) Coordinated selection of user plane functions in core and radio access networks
MY196367A (en) * 2017-04-19 2023-03-27 Lg Electronics Inc Method for Processing Pdu Session Establishment Procedure and Amf Node
SG11201811730TA (en) * 2017-04-19 2019-01-30 Lg Electronics Inc Method for processing pdu session establishment procedure and amf node
EP3481139B1 (en) * 2017-06-21 2022-10-12 LG Electronics Inc. Method and device for performing service request procedure in wireless communication system
US20190007992A1 (en) * 2017-07-03 2019-01-03 Electronics And Telecommunications Research Institute Network triggered service request method and user equipment (ue) triggered service request method
US20190007500A1 (en) * 2017-07-03 2019-01-03 Electronics And Telecommunications Research Institute Method for protocol data unit (pdu) session anchor relocation and 5g network registration
CN109429361B (zh) * 2017-07-18 2021-01-01 华为技术有限公司 会话处理方法及装置
US20200059989A1 (en) * 2017-08-16 2020-02-20 Lenovo (Singapore) Pte. Ltd. Indicating a packet data unit session as unavailable

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007080558A2 (en) * 2006-01-16 2007-07-19 Zlango Ltd. Communications network system and methods for using same
CN101394588A (zh) * 2007-09-21 2009-03-25 华为技术有限公司 一种实现分组域中会话业务的方法和系统
CN103517452A (zh) * 2013-09-29 2014-01-15 华为技术有限公司 一种业务连接建立方法及装置
CN105813079A (zh) * 2016-05-17 2016-07-27 工业和信息化部电信研究院 一种终端接入方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3648506A4

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220132602A1 (en) * 2019-01-15 2022-04-28 Datang Mobile Communications Equipment Co.,Ltd. Pdu session activation method and apparatus, and paging method and apparatus
US11997729B2 (en) * 2019-01-15 2024-05-28 Datang Mobile Communications Equipment Co., Ltd. PDU session activation method and apparatus, and paging method and apparatus
WO2020164180A1 (en) * 2019-02-13 2020-08-20 Telefonaktiebolaget Lm Ericsson (Publ) Secondary authorization at pdu session establishment for home routed roaming
US10925113B2 (en) 2019-02-13 2021-02-16 Telefonaktiebolaget Lm Ericsson (Publ) Secondary authorization at PDU session establishment at home routed roaming
US11546966B2 (en) 2019-02-13 2023-01-03 Telefonaktiebolaget Lm Ericsson (Publ) Secondary authorization at PDU session establishment for home routed roaming
US11943842B2 (en) 2019-02-13 2024-03-26 Telefonaktiebolaget Lm Ericsson (Publ) Secondary authorization at PDU session establishment for home routed roaming
US11570826B2 (en) * 2019-08-12 2023-01-31 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Method and device for establishing session
KR102667117B1 (ko) 2019-09-30 2024-05-17 지티이 코포레이션 네트워크 데이터 수집 방법, 장치 및 시스템
CN113132170A (zh) * 2019-12-30 2021-07-16 中兴通讯股份有限公司 数据管理方法及系统、关联子系统和计算机可读介质
CN113132170B (zh) * 2019-12-30 2024-05-28 中兴通讯股份有限公司 数据管理方法及系统、关联子系统和计算机可读介质

Also Published As

Publication number Publication date
US11317451B2 (en) 2022-04-26
EP3648506A4 (en) 2020-07-01
CN109548092A (zh) 2019-03-29
CN109548092B (zh) 2021-04-09
EP3648506B1 (en) 2023-05-24
US20200163134A1 (en) 2020-05-21
EP3648506A1 (en) 2020-05-06

Similar Documents

Publication Publication Date Title
US11317451B2 (en) Session activation method, device, and system
US20220248254A1 (en) Method of processing network slice based congestion, device and system thereof
KR102358095B1 (ko) 저전력 rrc 운용 방법 및 장치
WO2018171588A1 (zh) 一种通信方法及设备
WO2018137284A1 (zh) 一种传输寻呼消息的方法及装置
US20190021056A1 (en) Communications method and apparatus
US11812503B2 (en) Mobility management processing method and apparatus
WO2019184651A1 (zh) 一种通信方法及装置
CN113873478B (zh) 通信方法及装置
WO2019051811A1 (zh) 配置频率优先级的方法、终端设备、基站和核心网设备
US11224096B2 (en) Method and apparatus for configuring power consumption parameter
WO2018099291A1 (zh) 数据传输方法、装置及系统、存储介质
US11082893B2 (en) Session migration method and device applied to a UE tracking area update
US20200037205A1 (en) Communication Method and Communications Apparatus
KR20220044341A (ko) 보안 보호 모드 결정 방법 및 장치
WO2013020402A1 (zh) 资源调度的方法及网元
TW201813352A (zh) 通信裝置、網路裝置及退避控制方法
WO2013023549A1 (zh) 负载分担方法、基站、用户设备、负载分担节点和系统
WO2020034972A1 (zh) 会话迁移的方法和装置
WO2022236466A1 (en) Methods, devices, and systems for configuring sidelink drx
CN114642079B (zh) 通信方法及装置
WO2024000435A1 (zh) 物联网设备的管理方法、装置、设备和存储介质
US20220360969A1 (en) Communication method and apparatus
US20230239728A1 (en) Service data flow transmission method, communication apparatus, and communication system
WO2023141874A1 (en) Methods, devices, and systems for performing network slice replacement

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18838478

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2018838478

Country of ref document: EP

Effective date: 20200129