WO2019206099A1 - 一种通信方法及装置 - Google Patents

一种通信方法及装置 Download PDF

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Publication number
WO2019206099A1
WO2019206099A1 PCT/CN2019/083743 CN2019083743W WO2019206099A1 WO 2019206099 A1 WO2019206099 A1 WO 2019206099A1 CN 2019083743 W CN2019083743 W CN 2019083743W WO 2019206099 A1 WO2019206099 A1 WO 2019206099A1
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WIPO (PCT)
Prior art keywords
information
application
ursp
request
network element
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
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PCT/CN2019/083743
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English (en)
French (fr)
Inventor
孙海洋
熊春山
谭仕勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP19792262.8A priority Critical patent/EP3783993B1/en
Publication of WO2019206099A1 publication Critical patent/WO2019206099A1/zh
Priority to US17/081,634 priority patent/US11533670B2/en
Anticipated expiration legal-status Critical
Priority to US17/987,550 priority patent/US11950175B2/en
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/302—Route determination based on requested QoS
    • H04L45/306—Route determination based on the nature of the carried application
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H04W8/14—Mobility data transfer between corresponding nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/302—Route determination based on requested QoS
    • H04L45/308—Route determination based on user's profile, e.g. premium users
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/42—Centralised routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/22—Manipulation of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/20—Transfer of user or subscriber data

Definitions

  • the present application relates to the field of mobile communications technologies, and in particular, to a communication method and apparatus.
  • the user equipment (UE) related policy information that is, the UE route selection policy (URSP) is introduced by the terminal device as a policy.
  • the executor selects a suitable packet data unit (PDU) session for the upstream traffic flow. That is, the data network name (DNN) of the PDU session used by some services, single network slice selection assistance information (S-NSSAI), session and service continuity (session and service continuity) , SSC) mode (mode), etc. have certain requirements.
  • the URSP used by the terminal device may not be the same as the URSP sent by the network side, that is, the URSP used by the terminal device is incorrect.
  • the URSP may be delivered by a policy control function (PCF) for access and mobility management (AM) policy control.
  • PCF policy control function
  • AM access and mobility management
  • the terminal device initially enters a network, fails to obtain the URSP of the network, or the terminal device maliciously uses the PDU session with good characteristics, or the internal algorithm error of the terminal device, etc., the URSP and the network side used by the terminal device may be caused.
  • the URSP is sent differently, which may cause a PDU session error.
  • the embodiment of the present application provides a communication method and device for verifying a URSP used by a terminal device.
  • a first communication method is provided, which may be performed by a first type of communication device, such as a SM-PCF or a chip disposed in an SM-PCF, or a first communication device such as AMF Or a chip set in the AMF, or a first type of communication device such as a UDM or a chip disposed in the UDM.
  • a first type of communication device such as a SM-PCF or a chip disposed in an SM-PCF
  • a first communication device such as AMF Or a chip set in the AMF
  • a first type of communication device such as a UDM or a chip disposed in the UDM.
  • the method includes: obtaining information of a first application of at least one packet data unit PDU session, the information of the first application being determined according to a first user equipment routing policy URSP, and transmitting information of the first application to a second a network element, where information of the first application is used to verify whether information of the second application of the at least one PDU session matches information of the first application, and information of the second application is the at least one PDU session The information of the application to which the data packet belongs.
  • the first communication device can obtain the information of the first application, and send the information to the second network element, so that the second network element can verify the second application of the at least one PDU session according to the information of the first application.
  • the information and the information of the first application match, that is, whether the URSP used by the terminal device is consistent with the URSP on the network side, thereby providing an implementation mechanism for verifying the correctness of the URSP of the terminal device, and ensuring the normal progress of the PDU session.
  • obtaining information of the first application of the at least one PDU session includes: sending first request information to the first network element, where the first request information is used to request to obtain information about the first application, Receiving information of the first application; or sending first request information to the first network element, where the first request information is used to request to obtain the first URSP, receive the first URSP, and according to the A URSP obtains information of the first application.
  • the first communication device may obtain the information of the first application by sending the first request information to the first network element, where the first request information may be used to request the first URSP, or for requesting The information of the first application is obtained. If the first request information is used to request the first URSP, the communication device may obtain the information of the first application according to the first URSP, and the manner is flexible.
  • the first request information includes identification information of a first PDU session, and the at least one PDU session is the first PDU session.
  • the first request information may request information of a first application of multiple PDU sessions, or a URSP corresponding to multiple PDU sessions, or the first request information may also request a first one of a specific PDU session.
  • the information of the application, or the URSP corresponding to a PDU session, that is, the number of at least one PDU session may be one or more, which can meet different requirements. If the information of the first application of the PDU session or the corresponding URSP is requested, the identifier information of the corresponding PDU session may be carried in the first request information, which is simple.
  • a second communication method which can be performed by a second communication device, such as an SMF or a chip disposed in the SMF, or a second communication device such as a UPF or a UPF In the chip.
  • the method includes: receiving information of a first application of at least one PDU session, wherein the information of the first application determines, according to the first URSP, information of the second application of the at least one PDU session and the first Whether the information of the application is the information of the application to which the data packet in the at least one PDU session belongs, and determining that the information of the second application and the information of the first application do not match
  • the second request information is sent to the first network element, where the second request information is used to request the first network element to deliver the first URSP.
  • the second communication device may verify whether the information of the second application of the at least one PDU session matches the information of the first application, that is, whether the URSP used by the terminal device is consistent with the URSP on the network side, thereby In order to verify the correctness of the URSP of the terminal device, an implementation mechanism is provided to ensure the normal progress of the PDU session. And if it is determined that the URSP used by the terminal device is inconsistent with the URSP on the network side, the second communication device may request the first network element to deliver the first URSP, so that the terminal device can update the used URSP, so that the URSP used by the terminal device is used. Consistent with the URSP on the network side, reducing the network error rate.
  • the method further includes: sending, to the first network element, first request information, where the first request information is used to request obtaining information of the first application, or for requesting acquisition Said the first URSP.
  • the first communication device can send the first request information to the first network element, and then the first request information can be sent by the second communication device to the first communication. The device is then forwarded by the first communication device to the first network element. It can be understood that the second communication device may not be able to directly communicate with the first network element, and then the forwarding may be implemented by the first communication device, so that the first network element can receive the first request information.
  • the method further includes: sending, to the UPF, third request information, where the third request information is used to indicate that the UPF determines information about an application to which the data packet in the at least one PDU session belongs. Receiving information of the second application sent by the UPF.
  • the method further includes: detecting an application to which the data packet transmitted in the at least one PDU session belongs, and obtaining information of the second application.
  • the information of the second application may be determined by the UPF, and the information of the second application may be sent to the second communication device, or the information of the second application may be determined by the second communication device.
  • the situation is different and more flexible.
  • sending the second request information to the first network element including: sending the second request information to the AMF, to forward the second request information to the first network element by using the AMF Or sending the second request information to the first PCF to forward the second request information to the first network element by using the first PCF, where the first PCF is a PCF connected to the SMF.
  • the AMF may be used for forwarding, or the first PCF may be selected.
  • the first PCF may be selected.
  • these are just two examples. They can also be forwarded through other network elements. As long as the second request information can be forwarded to the first network element, the method is flexible, and different paths can be selected according to the situation.
  • the first network element is a second PCF or a UDR
  • the second PCF is a PCF for AM policy control.
  • the embodiment of the present application does not limit the specific implementation manner of the first network element.
  • a third communication method is provided, which can be performed by a third communication device, such as an AM-PCF or a chip disposed in the AM-PCF, or a third communication device such as a UDR Or a chip set in the AM-PCF.
  • a third communication device such as an AM-PCF or a chip disposed in the AM-PCF
  • a third communication device such as a UDR Or a chip set in the AM-PCF.
  • the method includes: receiving first request information sent by a third network element, where the first request information is used to request to obtain a first URSP, or information for requesting to obtain a first application of at least one PDU session, where The information of the first application is determined according to the first URSP, where the first request information is used to request to obtain the first URSP, and the first URSP is sent to the third network element; or, in the first request The information is used to request the information of the first application, and the information of the first application is sent to the third network element.
  • the third network element may send the first request information to the third communication device to request to obtain the first URSP, or the information of the first application of the at least one PDU session, for example, the third.
  • the network element may send the information of the first URSP or the first application to the second network element, so that the second network element may verify the information of the second application of the at least one PDU session and the information of the first application according to the information of the first application. Whether the matching is performed, that is, whether the URSP used by the terminal device is consistent with the URSP on the network side, thereby providing an implementation mechanism for verifying the correctness of the URSP of the terminal device, and ensuring the normal progress of the PDU session.
  • the first request information further carries identification information of the first PDU session; the first request information is used to request to obtain information for determining information of the first application of the first PDU session.
  • the first URSP, or the first request information is used to request information about the first application of the first PDU session, where the information of the first application includes information about the first application of the first PDU session. .
  • the first request information may request information of a first application of multiple PDU sessions, or a URSP corresponding to multiple PDU sessions, or the first request information may also request a first one of a specific PDU session.
  • the information of the application, or the URSP corresponding to a PDU session, that is, the number of at least one PDU session may be one or more, which can meet different requirements. If the information of the first application of the PDU session or the corresponding URSP is requested, the identifier information of the corresponding PDU session may be carried in the first request information, which is simple.
  • the method further includes: receiving second request information sent by the third network element, where the second request information is used to request to deliver the first URSP, and send the first URSP .
  • the third network element may request the first network element to deliver the first URSP, so that the terminal device can update the used URSP, so that the terminal device can update the used URSP.
  • the URSP used by the terminal device is consistent with the URSP on the network side, which reduces the network error rate.
  • a first communication device such as an SM-PCF or an AMF or UDM.
  • the communication device has the function of implementing the SM-PCF or AMF or UDM in the design of the above method. These functions can be implemented in hardware or in software by executing the corresponding software.
  • the hardware or software includes one or more units corresponding to the functions described above.
  • the specific structure of the communication device can include a processor and a transceiver.
  • the processor and transceiver may perform the respective functions of the methods provided by any of the possible aspects of the first aspect or the first aspect described above.
  • a second communication device such as an SMF or UPF.
  • the communication device has the function of implementing the SMF or UPF in the design of the above method. These functions can be implemented in hardware or in software by executing the corresponding software.
  • the hardware or software includes one or more units corresponding to the functions described above.
  • the specific structure of the communication device can include a processor and a transceiver.
  • the processor and transceiver may perform the respective functions of the methods provided by any of the possible aspects of the second aspect or the second aspect described above.
  • a third communication device such as an AM-PCF or a UDR.
  • the communication device has the function of implementing an AM-PCF or a UDR in the above method design. These functions can be implemented in hardware or in software by executing the corresponding software.
  • the hardware or software includes one or more units corresponding to the functions described above.
  • the specific structure of the communication device can include a processor and a transceiver.
  • the processor and transceiver may perform the respective functions of the methods provided by any of the possible aspects of the third or third aspect above.
  • a first communication device such as an SM-PCF or an AMF or UDM.
  • the communication device has the function of implementing the SM-PCF or AMF or UDM in the design of the above method. These functions can be implemented in hardware or in software by executing the corresponding software.
  • the hardware or software includes one or more units corresponding to the functions described above.
  • the specific structure of the communication device may include a processing module and a transceiver module.
  • the processing module and the transceiver module may perform the respective functions of the methods provided by any of the possible aspects of the first aspect or the first aspect described above.
  • a second communication device such as an SMF or UPF.
  • the communication device has the function of implementing the SMF or UPF in the design of the above method. These functions can be implemented in hardware or in software by executing the corresponding software.
  • the hardware or software includes one or more units corresponding to the functions described above.
  • the specific structure of the communication device may include a processing module and a transceiver module.
  • the processing module and the transceiver module may perform the respective functions of the methods provided by any of the possible aspects of the second aspect or the second aspect described above.
  • a third communication device such as an AM-PCF or a UDR.
  • the communication device has the function of implementing an AM-PCF or a UDR in the above method design. These functions can be implemented in hardware or in software by executing the corresponding software.
  • the hardware or software includes one or more units corresponding to the functions described above.
  • the specific structure of the communication device may include a processing module and a transceiver module.
  • the processing module and the transceiver module may perform the respective functions of the methods provided by any of the possible aspects of the third aspect or the third aspect described above.
  • a first communication device may be an SM-PCF or AMF or UDM in the above method design, or a chip disposed in the SM-PCF or AMF or UDM.
  • the communication device includes a memory for storing computer executable program code, and a processor coupled to the memory.
  • the program code stored in the memory includes instructions which, when executed by the processor, cause the communication device to perform the method of any of the above-described first aspect or any of the possible aspects of the first aspect.
  • a second communication device may be an SMF or UPF in the above method design, or a chip disposed in the SMF or UPF.
  • the communication device includes a memory for storing computer executable program code, and a processor coupled to the memory.
  • the program code stored in the memory includes instructions which, when executed by the processor, cause the communication device to perform the method of any one of the possible aspects of the second aspect or the second aspect described above.
  • a third communication device may be an AM-PCF or a UDR in the above method design, or a chip disposed in an AM-PCF or a UDR.
  • the communication device includes a memory for storing computer executable program code, and a processor coupled to the memory.
  • the program code stored in the memory includes instructions which, when executed by the processor, cause the communication device to perform the method of any one of the possible aspects of the third aspect or the third aspect described above.
  • a communication system comprising a first communication device, a second communication device, and a third communication device; wherein the first communication device is configured to obtain at least one PDU session The information of the first application, the information of the first application is determined according to the first URSP, and the information of the first application is sent to the second communication device, where the information of the first application is used to verify the at least Whether information of the second application of one PDU session matches information of the first application, the information of the second application is information of an application to which the data packet in the at least one PDU session belongs; the second communication The device is configured to receive information about a first application of the at least one PDU session, where the information of the first application is determined according to the first URSP, determining information of the second application of the at least one PDU session, and the first Whether the information of the application is matched, the information of the second application is information of an application to which the data packet in the at least one PDU session belongs, and determining information of the second application and
  • a computer storage medium stores instructions that, when run on a computer, cause the computer to perform any one of the first aspect or the first aspect of the first aspect The method described in the above.
  • a computer storage medium stores instructions that, when run on a computer, cause the computer to perform any of the possible aspects of the second aspect or the second aspect described above The method described in the above.
  • a computer storage medium stores instructions that, when run on a computer, cause the computer to perform any of the possible aspects of the third aspect or the third aspect described above The method described in the above.
  • a seventeenth aspect a computer program product comprising instructions, wherein instructions stored in a computer program product, when executed on a computer, cause the computer to perform any of the first aspect or the first aspect described above The method described in the design.
  • a computer program product comprising instructions for storing instructions for causing a computer to perform any one of the second aspect or the second aspect described above when executed on a computer The method described in the design.
  • a nineteenth aspect a computer program product comprising instructions, wherein the computer program product stores instructions that, when run on a computer, cause the computer to perform any one of the third aspect or the third aspect described above The method described in the design.
  • the second network element can verify whether the URSP used by the terminal device is consistent with the URSP on the network side, thereby providing an implementation mechanism for verifying the correctness of the URSP of the terminal device, and ensuring normal operation of the PDU session.
  • FIG. 1 to FIG. 6 are schematic diagrams of several application scenarios according to an embodiment of the present application.
  • FIG. 7 to FIG. 9 are flowcharts of three communication methods provided by an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a communication device that can implement the function of a third network element according to an embodiment of the present disclosure
  • FIG. 11 is a schematic structural diagram of a communication device that can implement the function of a second network element according to an embodiment of the present disclosure
  • FIG. 12 is a schematic structural diagram of a communication device that can implement the function of a first network element according to an embodiment of the present disclosure
  • 13A-13B are two schematic structural diagrams of a communication apparatus according to an embodiment of the present application.
  • a terminal device including a device that provides voice and/or data connectivity to a user, for example, may include a handheld device with wireless connectivity, or a processing device connected to a wireless modem.
  • the terminal device can communicate with the core network via a radio access network (RAN) to exchange voice and/or data with the RAN.
  • the terminal device may include user equipment (UE), a wireless terminal device, a mobile terminal device, a subscriber unit, a subscriber station, a mobile station, a mobile station, and a remote station.
  • Remote station access point (AP), remote terminal, access terminal, user terminal, user agent, or user Equipment (user device) and so on.
  • a mobile phone or "cellular" phone
  • a computer with a mobile terminal device a portable, pocket, handheld, computer built-in or in-vehicle mobile device, smart wearable device, and the like.
  • PCS personal communication service
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • restricted devices such as devices with lower power consumption, or devices with limited storage capacity, or devices with limited computing capabilities. Examples include information sensing devices such as bar code, radio frequency identification (RFID), sensors, global positioning system (GPS), and laser scanners.
  • RFID radio frequency identification
  • GPS global positioning system
  • the terminal device may also be a wearable device.
  • a wearable device which can also be called a wearable smart device, is a general term for applying wearable technology to intelligently design and wear wearable devices such as glasses, gloves, watches, clothing, and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are more than just a hardware device, but they also implement powerful functions through software support, data interaction, and cloud interaction.
  • Generalized wearable smart devices include full-featured, large-size, non-reliable smartphones for full or partial functions, such as smart watches or smart glasses, and focus on only one type of application, and need to work with other devices such as smartphones. Use, such as various types of smart bracelets for smart signs monitoring, smart helmets, smart jewelry, etc.
  • a network element, or network device for example, includes an access network element, or an access network device, such as a base station (e.g., an access point) and a user plane function (UPF).
  • a base station e.g., an access point
  • UPF user plane function
  • the base station may refer to a device in the access network that communicates with the wireless terminal device through one or more cells on the air interface.
  • the network element can be used to convert received air frames to Internet Protocol (IP) packets as a router between the terminal device and the rest of the access network, wherein the remainder of the access network can include an IP network.
  • IP Internet Protocol
  • the network element can also coordinate the attribute management of the air interface.
  • the network element may include an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in a long term evolution (LTE) system or an evolved LTE system (LTE-A), or It may also include a fifth generation mobile communication technology (5G), a next generation node B (gNB) in a new radio (NR) system, or may also include a cloud access network (CloudRAN) system.
  • 5G fifth generation mobile communication technology
  • gNB next generation node B
  • NR new radio
  • CloudRAN cloud access network
  • the centralized unit (CU) and the distributed ynit (DU) are not
  • the UPF is a functional network element of the user plane, and is mainly responsible for connecting to an external network. It can be considered that the UPF is equivalent to a combination of a serving gateway (SGW) and a packet data network gateway (PDN-GW) in LTE.
  • SGW serving gateway
  • PDN-GW packet data network gateway
  • the network element further includes a core network element, or a core network device, and includes, for example, a policy control function (PCF), a unified data repository (UDR), access, and a mobile device.
  • PCF policy control function
  • UDR unified data repository
  • AMF Access and mobility management function
  • SMF session management function
  • MME mobility management entity
  • AMF and SMF can select different PCFs for policy control.
  • the PCF used for AM policy control as AM-PCF, or the second PCF, abbreviated as AM-PCF or the second PCF
  • the SM-PCF connected to the SMF or the first PCF, referred to as SM-PCF or the first PCF.
  • AM-PCF and SM-PCF are only roles distinctions, and there is no restriction or distinction between the functions of each PCF.
  • the AM-PCF and the SM-PCF may be different PCFs or the same PCF.
  • URSP in 5G, URSP is introduced, the URSP is implemented by the terminal device, and the PDU session conforming to the URSP is selected for the uplink service flow, that is, the DNN, the slice, the SSC mode, etc. of the PDU session used by some services have certain Claim.
  • the URSP specifies which applications the attributes of the PDU session should correspond to.
  • the PDU session has multiple attributes, and different PDU sessions may have different attributes.
  • the URSP is an application that specifies various attributes of the PDU session.
  • the first PDU session has a first attribute, and the application corresponding to the first attribute can be determined according to the URSP, so that the applications are applications that the first PDU session is allowed to use.
  • the URSP is set by the network side.
  • the URSP used by the terminal device needs to be the same as the URSP on the network side, so that the PDU session selected by the terminal device can meet the requirements of the network side.
  • system and “network” in the embodiments of the present application may be used interchangeably.
  • Multiple means two or more.
  • a plurality can also be understood as “at least two” in the embodiment of the present application.
  • the character "/” unless otherwise specified, generally indicates that the contextual object is an "or" relationship.
  • URSP is introduced, with the terminal device acting as the executor of the policy, selecting an appropriate PDU session for the upstream traffic flow. That is, some services have certain requirements on the DNN, slice, and SSC mode of the PDU session used.
  • the URSP is set by the network side, and the URSP used by the terminal device is required to be consistent with the URSP stored on the network side, so as to ensure normal communication between the terminal device and the network side.
  • the URSP used by the terminal device may not be the same as the URSP sent by the network side.
  • the terminal device initially enters a network, fails to obtain the URSP of the network, or has good malicious use characteristics of the terminal device.
  • the PDU session, or the internal algorithm error of the terminal device may cause the URSP used by the terminal device to be different from the URSP sent by the network side. This may cause a PDU session error.
  • the technical solution of the embodiment of the present application is provided to verify whether the URSP of the terminal device is consistent with the URSP on the network side.
  • the technical solutions provided by the embodiments of the present application can be generally applied to non-roaming scenarios and roaming scenarios of the 5G system. These scenarios are respectively introduced below.
  • the terminal device takes the UE as an example.
  • FIG. 1 is a first architecture diagram of a non-roaming scenario in a 5G system.
  • the service planes are used within the control plane.
  • network slice selection function (NSSF), network exposure function (NEF), NF repository function (NRF), PCF, unified data management (unified data) Management, UDM), application function (AF), authentication server function (AUSF), AMF, and SMF are all connected to the same connection line.
  • the NSSF is connected to the connection line through the Nnssf interface, and the NEF passes.
  • the Nnef interface is connected to the connection line
  • the NRF is connected to the connection line through the Nnrf interface.
  • the PCF is connected to the connection line through the Npcf interface.
  • the UDM is connected to the connection line through the Nudm interface, and the AF is connected to the connection line through the Naf interface, and the AUSF passes.
  • the Nausf interface is connected to the connection line
  • the AMF is connected to the connection line through the Namf interface
  • the SMF is connected to the connection line through the Nsmf interface.
  • the AMF also communicates with the (radio) access network (R) AN through the N2 interface, and communicates with the UE through the N1, the UE can communicate with the (R) AN, and the (R)AN communicates with the (R) AN through the N3 interface.
  • UPF communication the UPF is connected to the SMF through the N4 interface, and is connected to the data network (DN) through the N6 interface.
  • FIG. 2 is a second architecture diagram of a non-roaming scenario in a 5G system
  • FIG. 2 is a reference point architecture.
  • the UE can communicate with the AMF via the (R) AN, where the (R) AN communicates with the AMF over the N2 interface.
  • the UE can also directly communicate with the AMF through the N1 interface.
  • the (R)AN communicates with the UPF through the N3 interface, and the UPF communicates with other UPFs through the N9 interface.
  • the UPF also communicates with the DN through the N6 interface, and communicates with the SMF through the N4 interface.
  • the AMF communicates with other AMFs through the N14 interface.
  • the AMF also communicates with the SMF through the N11 interface, communicates with the AUS through the N12 interface, communicates with the UDM through the N8 interface, communicates with the PCF through the N15 interface, and communicates with the NSSF through the N22 interface.
  • the N10 interface communicates with the UDM, and communicates with the PCF through the N7 interface, and the PCF communicates with the AF through the N5 interface.
  • FIG. 3 is a first architecture diagram of a roaming scenario in a 5G system
  • FIG. 3 is a local breakout (LBO) scenario.
  • a visit public land mobile network (VPLMN) indicates a network after the UE roams
  • a home public land mobile network (HPLMN) indicates a network before the UE roams, that is, Said that the UE roamed from the HPLMN to the VPLMN.
  • NSSF, NEF, NRF, PCF, AF, AMF, and SMF are all connected to the same connection line.
  • the NSSF is connected to the connection line through the Nnssf interface, and the NEF is connected to the connection line through the Nnef interface, and the NRF passes through the Nnrf interface.
  • the connection is made by the PCF through the Npcf interface, and the AF is connected to the connection line through the Naf interface.
  • the AMF is connected to the connection line through the Namf interface, and the SMF is connected to the connection line through the Nsmf interface, and the connection line is also connected.
  • the AMF also communicates with the (radio) access network (R) AN through the N2 interface, and communicates with the UE through the N1, the UE can communicate with the (R) AN, and the (R)AN communicates with the (R) AN through the N3 interface.
  • the UPF is connected to the SMF through the N4 interface and to the DN through the N6 interface.
  • the UDM, the NRF, the NSSF, the AUSF, the PCF, and the NEF are all connected to the same cable.
  • the UDM is connected to the cable through the Nudm interface.
  • the NSSF is connected to the cable through the Nnssf interface, and the NEF is connected to the NEN through the Nnef interface.
  • the NRF is connected to the connection line through the Nnrf interface.
  • the PCF is connected to the connection line through the Npcf interface.
  • the connection line is also connected to the hSEPP, and the vSEPP and the home security edge protection proxy (hSEPP) pass the N32. Interface connection.
  • FIG. 4 is a second architecture diagram of a roaming scenario in a 5G system
  • FIG. 4 is an LBO scenario.
  • the VPLMN indicates the network where the UE is roaming
  • the HPLMN indicates the network where the UE was roaming.
  • the NSSF, the NEF, the NRF, the PCF, the AMF, and the SMF are all connected to the same connection line.
  • the NSSF is connected to the connection line through the Nnssf interface
  • the NEF is connected to the connection line through the Nnef interface
  • the NRF is connected to the connection through the Nnrf interface.
  • the line connection the PCF is connected to the connection line through the Npcf interface, and the AMF is connected to the connection line through the Namf interface, and the SMF is connected to the connection line through the Nsmf interface, and the connection line is also connected to the vSEPP.
  • the AMF also communicates with the (R) AN through the N2 interface, and communicates with the UE through the N1, the UE can communicate with the (R) AN, the (R) AN communicates with the UPF through the N3 interface, and the UPF connects to the SMF through the N4 interface, and Connect to the UPF in the HPLMN through the N9 interface.
  • UDM In the HPLMN, UDM, NRF, AUSF, SMF, AF, PCF, and NEF are all connected to the same cable.
  • the UDM is connected to the cable through the Nudm interface.
  • the NSSF is connected to the cable through the Nnssf interface.
  • the NEF is connected to the NNE through the Nnef interface.
  • connection cable is connected, the NRF is connected to the connection line through the Nnrf interface, the PCF is connected to the connection line through the Npcf interface, the AF is connected to the connection line through the Naf, and the SMF is connected to the connection line through the Nsmf, and the connection line is also connected to the hSEPP
  • the vSEPP and the hSEPP are connected through the N32 interface, the UPF is connected to the SMF through the N4 interface, and the DN is connected through the N6 interface.
  • FIG. 5 is a third architecture diagram of a roaming scenario in a 5G system
  • FIG. 5 is also an LBO scenario.
  • the VPLMN indicates the network where the UE is roaming
  • the HPLMN indicates the network where the UE was roaming.
  • the NSSF in the VPLMN communicates with the AMF through the N22 interface
  • the AMF communicates with the UE through the N1 interface
  • communicates with the vPCF through the N15 interface communicates through the N12 interface through the N15 interface.
  • FIG. 6 is a fourth architecture diagram of a roaming scenario in a 5G system
  • FIG. 6 is a home routed (HR) scenario.
  • the VPLMN indicates the network where the UE is roaming
  • the HPLMN indicates the network where the UE was roaming.
  • the V-NSSF in the VPLMN communicates with the AMF through the N22 interface, and communicates with the H-NSSF in the HPLMN through the N31 interface.
  • the AMF communicates with the UE through the N1 interface, communicates with the (R) AN through the N2 interface, and passes through the N12.
  • the interface communicates with the AUSF in the PLMN, communicates with the V-PCF through the N15 interface, communicates with the V-SMF through the N11 interface, and communicates with the UDM in the HPLMN through the N8 interface, and the V-SMF communicates with the UP4 in the VPLMN with the N4 interface,
  • the H-SMF communicates with the UPF in the HPLMN through the N4 interface, communicates with the H-PCF through the N7 interface, and communicates with the UDM through the N10 interface.
  • the UDM communicates with the AUS through the N13 interface, H -
  • the PCF communicates with the V-PCF through the N24 interface, and communicates with the AF through the N5 interface, the UE can communicate with the (R) AN, the (R) AN communicates with the UPF in the VPLMN through the N3 interface, and the UPF in the VPLMN passes the N9 interface.
  • UPF communication in the HPLMN the UPF in the HPLMN also communicates with the DN through the N6 interface.
  • (R)AN refers to a 3rd Generation Partnership Project (3GPP), such as an eNB in an LTE system, or a gNB in an NR system, or the like.
  • 3GPP 3rd Generation Partnership Project
  • any of the scenarios shown in FIG. 1 and the scenario shown in FIG. 6 can be used as an application scenario in the embodiment of the present application.
  • adding "V” or "v” before a certain network element has the same meaning, indicating that the network element belongs to the VPLMN, for example, V-PCF or vPCF, which means PCF in the VPLMN, but in a certain network.
  • HPLMN such as H-PCF or hPCF
  • the functions may be the same or different.
  • the first embodiment of the present application provides a first communication method, and the process of the method is as follows.
  • the terminal device initiates a PDU session establishment process.
  • the PDU session establishment process is initiated by the terminal device, and passes through the RAN and the AMF to reach the SMF.
  • S71 it can be considered that the PDU session is established.
  • the PDU session established by S71 is referred to as a first PDU session.
  • the step starting from S72 is a step after the first PDU session is established.
  • S71 may be considered as a process of establishing a PDU session, but the PDU session is not established, then the steps S72-S75 may occur in the PDU session establishment process, and the step starting from S76 occurs in the first PDU session. The steps after the establishment is completed.
  • the second network element sends the first request information to the first network element, where the first network element receives the first request information from the second network element, where the first request information is used to request to obtain the first URSP, or Requesting to obtain information of the first application of at least one PDU session.
  • the information of the first application is determined according to the first URSP.
  • the first URSP can be understood as the URSP on the network side, that is, the URSP in the AM-PCF.
  • the first URSP can include a specific URSP, and can also include multiple URSPs. .
  • the first URSP specifies information of an application corresponding to an attribute of at least one PDU session, that is, information specifying a first application of at least one PDU session.
  • the first URSP includes, for example, a UE policy status information or a policy section identifier (PSI) list, and a policy content corresponding to the first URSP, and at least one of the two.
  • PSI policy section identifier
  • the second network element is, for example, an SMF or a UPF.
  • Figure 7 takes the SMF as an example.
  • the SMF may be an SMF in the VPLMN.
  • the SMF may forward the first request information to the first network element by using the third network element, where the third network element is, for example, an AMF, that is, the SMF sends the first information to the first network element.
  • a request message the specific process is: the SMF sends the first request information to the AMF, and the AMF forwards the first request information to the first network element (as shown in FIG. 8, S72 is represented by two arrow steps), so It is considered that the AMF directly sends the first request information to the first network element, and the first network element receives the first request information from the SMF, specifically, receives the first request information from the SMF from the AMF.
  • the UPF may forward the first request information to the first network element by using the SMF and the third network element, where the third network element is, for example, an AMF, that is, the UPF is directed to the first network element.
  • the specific process is: the UPF sends the first request information to the SMF, and the SMF forwards the first request information to the AMF, and the AMF forwards the first request information to the first network element, so it can also be considered as AMF directly.
  • Sending the first request information to the first network element the first network element receives the first request information from the SMF, specifically receiving the first request information from the UPF from the AMF.
  • the first network element is, for example, AM-PCF. Because the URSP is generated by the AM-PCF, the information of the first application is also determined according to the first URSP, and can be determined by the AM-PCF, so whether requesting the URSP or requesting the first An application's information can be directly requested from AM-PCF. If the first request information is used to request the information of the first application, after the AM-PCF receives the first request information, the information of the first application needs to be determined according to the first URSP. In addition, if the embodiment is applied in a roaming scenario, the AM-PCF refers to the AM-PCF in the HPLMN.
  • the first network element sends the first URSP to the second network element, where the second network element receives the information of the first URSP or the first application, or the first network element sends the information of the first application to the second network element. Then, the second network element receives the information of the first application.
  • the information sent by the first network element to the second network element may be forwarded to the second network element by using the third network element.
  • the first network element sends the first URSP to the third network element, and the third network element forwards the first URSP to the second network element, and then the second Receiving, by the network element, the first URSP forwarded by the third network element, that is, the second network element obtains the first URSP; or, in the case that the first request information is used to request the information of the first application of the at least one PDU session,
  • the first network element sends the information of the first URSP or the first application to the third network element, and if the third network element receives the first URSP, the first application information may be obtained according to the first URSP, and then the first The information of the application is forwarded to the second network element, and if the third network element receives the information of the first application, the information of the first application may be directly for
  • the information of the first application forwarded by the element that is, the second network element obtains the information of the first application; or, the first request information is used to request the information of the first application of the first URSP or the at least one PDU session.
  • the first network element sends the first URSP to the third network element.
  • the third network element obtains the information of the first application according to the first URSP, and sends the information of the first application to the second network element, where the second network element receives the information of the first application sent by the third network element, that is, the first network element
  • the second network element obtains the information of the first application.
  • the first network element is an AM-PCF
  • the second network element is an SMF
  • the third network element is an AMF
  • the first URSP can be understood to include all URSPs stored in the AM-PCF. Then, if the first request information is used to request the first URSP, the AM-PCF determines all the stored URSPs, sends the first URSP to the AMF, and the first URSP sent to the AMF may include all of the stored in the AM-PCF.
  • the AMF may send the first URSP directly to the SMF, or may obtain the information of the first application of the at least one PDU session according to the first URSP, and send the information of the first application to the SMF; or, if the first request information is used In the information requesting the first application of the at least one PDU session, the information requested by the first request information may be the first application of the PDU session having all the attributes specified by the URSP stored in the AM-PCF, then the AM-PCF Determining, according to all URSPs stored in the AM-PCF, information of the first application of the PDU session having the attributes specified by these URSPs, and transmitting the information to the AMF, and forwarding the information to the SMF through the AMF, then the AM-PCF sends the first information to the AMF.
  • the applied information may include information of a first application of a PDU session having all URSP-defined attributes stored in the AM-PCF; or, if the first request information is used to request information of the first application of the at least one PDU session, If the request information is requested by the first application of the PDU session having all the URSP-defined attributes stored in the AM-PCF, the AM-PCF determines all the stored URSPs and sends the first URSP to the AMF.
  • the first URSP sent to the AMF may include all URSPs stored in the AM-PCF, and the AMF may obtain information of the first application of the at least one PDU session according to the first URSP, and send information of the first application to the SMF.
  • the first URSP is understood to include all URSPs stored in the AM-PCF, that is, the first request information requests all URSPs or requests all URSP provisions stored in the AM-PCF
  • the information of the first application of the PDU session of the attribute does not need to carry the attribute information of the URSP or the PDU session ID of the PDU session.
  • the first URSP may be understood to include a partial URSP stored in the AM-PCF, or it is understood that the first URSP includes a URSP associated with a particular PDU session stored in the AM-PCF.
  • the first request information may be a specific URSP, and the first request information may carry the attribute information of the URSP, so that the AM-PCF may send the first URSP.
  • the first URSP includes the URSP that conforms to the attribute information carried by the first request information, and the AMF may directly send the first URSP to the SMF, or may obtain the first application of the at least one PDU session according to the first URSP.
  • the first request information may carry the identity identification number (ID) of the first PDU session.
  • the first PDU session may also carry the attribute information of the first PDU session, and the AM-PCF carries the information according to the first request information.
  • the attribute information determines a URSP, such as a first URSP, determining information of the first application of the first PDU session according to the first URSP, so that the AM-PCF sends the information of the first application of the first PDU session to the AMF, A The MF then sends the information of the first application of the first PDU session to the SMF; or, if the first request information is used to request the information of the first application of the first PDU session, the first request information may carry the first PDU session.
  • a URSP such as a first URSP
  • the ID may also carry the attribute information of the first PDU session, and the AM-PCF determines the URSP according to the attribute information carried by the first request information, for example, the first URSP, and the AM-PCF may send the first URSP to the AMF.
  • the AMF may obtain information of the first application of the first PDU session according to the first URSP, and send information of the first application to the SMF.
  • the AM-PCF sends information to the SMF, for example, the information of the first URSP or the first application is sent through the AMF. Therefore, as shown in FIG. 7, S73 is represented by two arrow steps.
  • the information of the first application may include information such as an application ID or an application filter.
  • the information sent by the first network element is forwarded to the SMF through the AMF, and there may be multiple SMFs communicating with one AMF, and the AMF may forward the information sent by the first network element to the first request sent to the AMF.
  • the SMF for example, the first request carries the PDU Session ID, and the AMF determines, according to the PDU Session ID, which SMF the information sent by the first network element is sent to.
  • the SMF sets an application detection trigger on the UPF, or an application detection reporting trigger.
  • the SMF instructs the UPF detection application, for example, to instruct the UPF to determine the application involved in the at least one PDU session, for example, the UPF can determine the application involved in the at least one PDU session by detecting.
  • the application involved in at least one PDU session that is, the application actually involved by the terminal device when performing at least one PDU session, or is understood to be an application to which the data packet in at least one PDU session belongs.
  • the information of the application to which the data packet in the PDU session belongs is referred to as the information of the second application of the PDU session, and then the SMF is information indicating that the UPF determines the second application of the at least one PDU session.
  • the SMF sets an application detection trigger on the UPF. It can also be understood that the SMF sends the third request information to the UPF, where the third request information is used to instruct the UPF to determine the information of the application to which the data packet in the at least one PDU session belongs. That is, information indicating that the UPF determines an application actually involved in at least one PDU session. Then, the UPF can determine the information of the application to which the data packet in the at least one PDU session belongs by detecting. For example, the SMF sends information of the first application of the at least one PDU session to the UPF, and the UPF determines information of the application involved in determining the terminal device when performing at least one PDU session.
  • the UPF detects that the terminal device is in an application involved in performing at least one PDU session, including an application that the SMF does not send to the UPF, then these applications are applications that the UPF cannot recognize.
  • the SMF may determine information of the first application of the at least one PDU session according to the first URSP.
  • the UPF detects that the terminal device involves the application A and the application B when performing at least one PDU session, wherein the information of the application A is included in the information of the first application of the at least one PDU session, and the information of the application B is not included in at least In the information of the first application of a PDU session, the application A is an application that the UPF can recognize, and the application B is an application that the UPF cannot identify.
  • the UPF sends information about the second application of the at least one PDU session to the SMF, where the SMF receives information about the second application of the at least one PDU session.
  • the UPF can be sent to the SMF as long as it is an application that the UPF can recognize or an application that the UPF cannot identify. As long as the information about the application involved in the terminal device performing at least one PDU session.
  • the S74 can be implemented by the N4 session establishment/modification request sent by the SMF in the PDU session establishment process to the UPF, and the S75 can pass the PDU.
  • the N4 session establishment/modification response is implemented by the UPF in the session establishment process.
  • the SMF determines whether information of the second application of the at least one PDU session matches information of the first application of the at least one PDU session.
  • the SMF obtains the information of the first application and the information of the second application, and can compare whether the two match.
  • the information of the first application may include information of multiple applications, and the information of the second application may also include information of multiple applications, where the information of the first application matches the information of the second application, for example,
  • the information of the application includes the information of the application being greater than or equal to the number of the information of the application included in the information of the second application, and the information of the application of the information of the second application is the information of the application included in the information of the first application. Subset.
  • the information of the second application includes the information of the application A, and the information of the application A is not included in the information of the first application, indicating that the information of the first application and the information of the second application do not match.
  • the types may be the same, for example, the IDs of the applications, or the types thereof may be different, for example, the information of some applications is the ID of the application, and The information of some applications is the filter of the application, and the same is true for the information of different applications included in the information of the second application. Therefore, if the information of the application is directly compared, the comparison result may be inaccurate due to the type of information applied.
  • the application corresponding to the information of the first application includes the application A
  • the application corresponding to the information of the second application also includes the application A
  • the information of the application A includes the type of the information of the application A
  • the second The information of the application A includes the filter of the application A, and the comparison result may indicate that the two are inconsistent, so that it may be misjudged that the information of the first application does not match the information of the second application.
  • determining whether the information of the first application and the information of the second application match may also be implemented by determining whether an application corresponding to the information of the first application and an application corresponding to the information of the second application match.
  • the information of the first application may include information of multiple applications, that is, the information of the first application may correspond to multiple applications, and the information of the second application may also include information of multiple applications, that is, the second application.
  • the information may also correspond to a plurality of applications, and the application corresponding to the information of the first application matches the application corresponding to the information of the second application, for example, the information of the application of the information of the first application includes the number of applications corresponding to the application being greater than or The number of applications corresponding to the information of the application included in the information of the second application, and the application corresponding to the information of the application included in the information of the second application is the application of the application corresponding to the information of the application included in the information of the first application. set.
  • the information of the second application includes the information of the application A, that is, the application corresponding to the information of the second application includes the application A, and the information of the application A is not included in the information of the first application, that is, the information of the first application.
  • the application corresponding to the information does not include the application A, which indicates that the application corresponding to the information of the first application does not match the application corresponding to the information of the second application, that is, the information of the first application and the information of the second application do not match.
  • the information of the application included in the information of the first application and the type of the application included in the information of the second application are consistent, for example, the information of the application included in the information of the first application and the information of the second application include The information of the application is the same type, then any one of the above methods can be used for comparison, that is, the information of the application can be compared, and the application corresponding to the information of the application can be used, and if The information of the application includes the type of the information of the application and the type of the application of the information of the second application are inconsistent, for example, the information of the application included in the information of the first application and the information of the application included in the information of the second application If the number of corresponding types is greater than or equal to 2, then preferably, the second comparison manner is adopted, that is, whether the information of the application is consistent by comparing whether the applications corresponding to the information of the application are consistent.
  • the process of verifying the URSP shown in S74-S76 is only an example. In an actual application, the SMF can also verify whether the URSP used by the terminal device matches the URSP on the network side by other means.
  • the SMF when determining that the information about the second application of the at least one PDU session and the information of the first application of the at least one PDU session do not match, sending the second request information to the first network element, where the first network element receives The second request information is used to request the first network element to deliver the first URSP.
  • the SMF sends the second request information to the third network element, for example, AMF, and is forwarded by the AMF to the AM-PCF, then the AM-PCF is from the AMF. Receiving second request information from the SMF.
  • the SMF is used to verify whether the URSP of the terminal device is incorrect, or the verification process may be performed by the UPF.
  • the SMF sends the information of the first application of the at least one PDU session to the UPF, and the UPF determines, by detecting, the information about the application involved in performing the at least one PDU session, that is, determining the second application of the at least one PDU session. information.
  • the UPF can directly compare the information of the first application of the at least one PDU session with the information of the second application of the at least one PDU session, and the comparison mode is consistent with the SMF.
  • the second request information may be sent to the AM-PCF, and the AM-PCF receives the second request information, where The UPF sends the second request information to the SMF, the SMF forwards the second request information to the AMF, and the AMF forwards the second request information to the AM-PCF, so the AM-PCF receives the second request information from the UPF from the AMF.
  • the second request information is used to request the AM-PCF to deliver the first URSP. This embodiment does not limit whether the network element verifies whether the information of the first application and the information of the second application are consistent.
  • the AM-PCF re-issues the first URSP, and the terminal device receives the first URSP.
  • the AM-PCF sends the first URSP to the AMF, and forwards it to the terminal device through the AMF, as indicated by the two arrows of S78 in FIG.
  • the PDU session modification process may be initiated. If the PDU session needs to be re-established according to the first URSP, the PDU session may be initiated. Process. In addition, if it is required to release the PDU session initiated in S71, the PDU session release procedure may be initiated. Regarding the PDU session establishment process, the PDU session modification process, and the PDU session release process, etc., reference may be made to the existing standard process, and no further description is provided.
  • the AMF can obtain the first URSP from the AM-PCF, or obtain the information of the first application of the at least one PDU session, so that the SMF or the UPF can verify whether the URSP used by the terminal device is correct. If the URSP used by the terminal device is incorrect, the AM-PCF may be requested to re-issue the correct URSP to the terminal device, so that the URSP used by the terminal device is consistent with the URSP on the network side to ensure normal PDU session.
  • FIG. 8 The embodiment of the present application provides a second communication method, and the process of the method is as follows.
  • the terminal device sends a PDU session establishment request. It indicates that the terminal device initiates a PDU session establishment process.
  • the terminal device sends a PDU session establishment request to the AMF through the (R)AN, and the AMF receives the PDU session establishment request, and then the AMF sends an SM context establishment request to the SMF, and the SMF receives the SM context establishment request, as shown in FIG. S81a is shown.
  • the SM context setting request may carry the ID of the AM-PCF for the SMF to determine the AM-PCF.
  • the ID of the AM-PCF may not be carried in the SM context establishment request.
  • the second network element sends the first request information to the first network element, where the first network element receives the first request information from the second network element, where the first request information is used to request to obtain the first URSP, or Requesting to obtain information of the first application of at least one PDU session.
  • the information of the first application is determined according to the first URSP.
  • the first URSP can be understood as the URSP on the network side, that is, the URSP in the AM-PCF.
  • the first URSP can include a specific URSP, and can also include multiple URSPs. .
  • the first URSP specifies information of an application corresponding to an attribute of at least one PDU session, that is, information specifying a first application of at least one PDU session.
  • the content included in the first URSP reference may be made to the related introduction in the embodiment shown in FIG.
  • the second network element is, for example, an SMF or an UPF, and FIG. 8 takes an SMF as an example.
  • the SMF may be an SMF in the VPLMN.
  • the SMF may forward the first request information to the first network element by using the third network element, for example, the SM-PCF or the NEF, that is, the SMF is first.
  • the network element sends the first request information.
  • the specific process is: the SMF sends the first request information to the SM-PCF or the NEF, and the first request information is forwarded by the SM-PCF or the NEF to the first network element, as shown in FIG.
  • the SM-PCF or the NEF directly sends the first request information to the first network element, and the first network element receives the first request information from the SM-PCF or the NEF, specifically from the SM-PCF.
  • the NEF receives the first request information from the SMF.
  • the UPF may forward the first request information to the first network element by using the SMF and the third network element, where the third network element is, for example, an SM-PCF or an NEF, that is, the UPF direction
  • the first network element sends the first request information.
  • the specific process is: the UPF sends the first request information to the SMF, and the SMF forwards the first request information to the SM-PCF or the NEF, and the first request information is forwarded by the SM-PCF or the NEF.
  • the first network element so it can be considered that the SM-PCF or the NEF directly sends the first request information to the first network element, and the first network element receives the first request information from the SMF, specifically, receives the information from the SM-PCF or the NEF.
  • the first request information of the UPF is not limited to the SM-PCF or the NEF.
  • the first network element is, for example, an AM-PCF or a UDR.
  • the AM-PCF as the first network element refers to the AM-PCF in the HPLMN.
  • the first network element takes the UDR as an example.
  • the third network element is an SM-PCF and the first network element is an AM-PCF
  • a communication interface needs to be added between the SM-PCF and the AM-PCF, so that the SM-PCF and the AM-PCF can directly communicate.
  • the first network element sends the first URSP to the second network element, where the second network element receives the information of the first URSP or the first application, or the first network element sends the information of the first application to the second network element. Then, the second network element receives the information of the first application.
  • the information sent by the first network element to the second network element may be forwarded to the second network element by using the third network element.
  • the first network element sends the first URSP to the third network element, and the third network element forwards the first URSP to the second network element, and then the second Receiving, by the network element, the first URSP forwarded by the third network element, that is, the second network element obtains the first URSP; or, in the case that the first request information is used to request the information of the first application of the at least one PDU session,
  • the first network element sends the information of the first URSP or the first application to the third network element, and if the third network element receives the first URSP, the first application information may be obtained according to the first URSP, and then the first The information of the application is forwarded to the second network element, and if the third network element receives the information of the first application, the information of the first application may be directly for
  • the information of the first application forwarded by the element that is, the second network element obtains the information of the first application; or, the first request information is used to request the information of the first application of the first URSP or the at least one PDU session.
  • the first network element sends the first URSP to the third network element.
  • the third network element obtains the information of the first application according to the first URSP, and sends the information of the first application to the second network element, where the second network element receives the information of the first application sent by the third network element, that is, the first network element
  • the second network element obtains the information of the first application.
  • the first URSP may be understood to include all URSPs stored in the AM-PCF, or the first URSP may also be understood as the first URSP including the URSP associated with the specific PDU session stored in the AM-PCF, regarding this part.
  • the information sent by the first network element is forwarded to the SMF through the SM-PCF or the NEF.
  • the UDR sends the first URSP or the first application information to the SMF.
  • the UDR sends the information of the first URSP or the first application to the SM-PCF or the NEF, and is forwarded by the SM-PCF to the SMF, as indicated by the two arrows in S83 in FIG.
  • the AMF may forward the information sent by the first network element to the SMF that sends the first request to the AMF.
  • the first request carries the PDU Session ID, and the AMF is based on the AMF.
  • the PDU Session ID determines which SMF to send the information sent by the first network element.
  • the SM-PCF When the SM-PCF sends the information of the first application to the SMF, it may be sent through special information, or may be carried in the existing information. For example, in the authorization process in the prior art, the SM-PCF can determine the quality of service (QoS) attributes that can be used in a PDU session, and generate a policy rule, and the SM-PCF sends the policy rule to the SMF. Then, the embodiment of the present application may choose to carry the information of the first application in the PDU session related policy information, and send the information to the SMF. Of course, the SM-PCF can also send the information of the first application to the SMF through other existing information, which is not limited.
  • QoS quality of service
  • the SMF sets an application detection trigger on the UPF, or an application detection reporting trigger.
  • the UPF sends information about the second application of the at least one PDU session to the SMF, where the SMF receives information about the second application of the at least one PDU session.
  • the SMF determines whether information of the second application of the at least one PDU session matches information of the first application of the at least one PDU session.
  • the SMF when determining that the information about the second application of the at least one PDU session and the information of the first application of the at least one PDU session do not match, sending the second request information to the first network element, where the first network element receives The second request information is used to request the first network element to deliver the first URSP.
  • the first network element is a UDR.
  • the SMF sends the second request information to the third network element, for example, the SM-PCF or the NEF, and the SM-PCF or the NEF forwards the data to the UDR.
  • the second request information from the SMF is received from the SM-PCF or NEF as indicated by the two arrows of S87 in FIG.
  • the SMF is used to verify whether the URSP of the terminal device is incorrect. This is similar to the description of the S77 in the embodiment shown in FIG. 7. In this embodiment, the verification process may also be performed by the UPF. .
  • the AM-PCF re-issues the first URSP, and the terminal device receives the first URSP. For example, the AM-PCF sends the first URSP to the AMF and forwards it to the terminal device through the AMF, as indicated by the two arrows in S88 of FIG.
  • the PDU session modification process may be initiated, if necessary, re-established according to the first URSP.
  • the PDU session can initiate a PDU session establishment process.
  • the PDU session release procedure may be initiated.
  • the SM-PCF or the NEF can obtain the first URSP from the AM-PCF or the UDR, or obtain the information of the first application of the at least one PDU session, so that the SMF or the UPF can verify the terminal. If the URSP used by the device is correct, if the URSP used by the terminal device is incorrect, the AM-PCF or UDR can be requested to re-issue the correct URSP to the terminal device, so that the URSP used by the terminal device is consistent with the URSP on the network side to ensure the PDU session. The normal progress.
  • the first URSP includes, for example, a UE policy status information or a PSI list, and a policy content corresponding to the first URSP, at least one of the two.
  • FIG. 9 The embodiment of the present application provides a third communication method, and the process of the method is as follows.
  • the third network element sends the first request information to the first network element, where the first network element receives the first request information from the second network element, where the first request information is used for the request.
  • Obtaining a first URSP or information for requesting to obtain a first application of at least one PDU session.
  • the information of the first application is determined according to the first URSP.
  • the first URSP can be understood as the URSP on the network side, that is, the URSP in the AM-PCF.
  • the first URSP can include a specific URSP, and can also include multiple URSPs. .
  • the first URSP specifies information of an application corresponding to an attribute of at least one PDU session, that is, information specifying a first application of at least one PDU session.
  • the SM-PCF in the VPLMN cannot be connected to the UDR in the HPLMN, and the UDM is located in the HPLMN, capable of communicating with the UDR in the HPLMN, and the UDM can obtain the first URSP or the first of the at least one PDU session from the UDR.
  • the first network element is a UDR
  • the UDM can also implement the corresponding function of the SM-PCF in the embodiment shown in FIG. 8.
  • the third network element is, for example, The UDM
  • the first network element is, for example, a UDR.
  • the UDR sends the first URSP to the UDM, and the UDM receives the first URSP, or the UDR sends the information of the first application to the UDM, and the UDM receives the information of the first application.
  • the UDR sends the first URSP to the UDM, and the UDM receives the first URSP, that is, the UDM obtains the first URSP, or the first request information
  • the UDR sends the information of the first application to the UDM, and the UDM receives the information of the first application, that is, the UDM obtains the information of the first application.
  • a policy association establishment during registering process is performed between the AMF and the PCF, and after the process is completed, S91 and S92 can be executed.
  • the UDM sends the information of the first URSP or the first application to the second network element, where the second network element receives the information of the first URSP or the first application.
  • the second network element is an SMF or an UPF
  • FIG. 9 is an example in which the second network element is an SMF.
  • the SMF may be an SMF in the VPLMN.
  • the UDM may directly send the first URSP to the second network element, or the UDM may obtain the information of the first application according to the first URSP, and then The information of an application is sent to the second network element. If the UDM receives the information of the first application from the UDR in S92, the UDM may directly transmit the information of the first application to the second network element.
  • the UDM may send the information of the first URSP or the first application to the SMF in the process of establishing the PDU session initiated by the terminal device. It may be considered that the terminal device initiates the PDU session establishment process before S93, as shown in FIG. 9. For example, the UDM sends the information of the first URSP or the first application to the SMF through the registration/subscription retrieval/subscription for updates information in the PDU session establishment process.
  • the SMF sets an application detection trigger on the UPF, or an application detection reporting trigger.
  • the UPF sends information about the second application of the at least one PDU session to the SMF, and the SMF receives information about the second application of the at least one PDU session.
  • the SMF determines whether information of the second application of the at least one PDU session matches information of the first application of the at least one PDU session.
  • the SMF may obtain information about the first application of the at least one PDU session according to the first URSP.
  • the SMF sends the second request information to the UDR if the information of the second application of the at least one PDU session and the information of the first application of the at least one PDU session do not match, and the UDR receives the second request information.
  • the second request information is used to request the UDR to deliver the first URSP.
  • the SMF is used to verify whether the URSP of the terminal device is incorrect. This is similar to the description of the S77 in the embodiment shown in FIG. 7. In this embodiment, the verification process may also be performed by the UPF. .
  • the SMF sends the second request information to the UDR through the UDM.
  • the SMF sends the second request information to the UDM, and the UDM forwards the second request information to the UDR.
  • the UDR receives the second request information from the SMF from the UDM. This is shown by the two arrows in S97 in Figure 9.
  • the S98 and the UDR re-issue the first URSP, and the terminal device receives the first URSP.
  • the UDR sends the first URSP to the UDM, which forwards the first URSP to the AMF and forwards it to the terminal device via the AMF, as indicated by the arrows in S98 of FIG.
  • the PDU session modification process may be initiated, if necessary, re-established according to the first URSP.
  • the PDU session can initiate a PDU session establishment process.
  • the PDU session release procedure may be initiated.
  • the UDM can obtain the first URSP from the UDR, or obtain the information of the first application of the at least one PDU session, so that the SMF or the UPF can verify whether the URSP used by the terminal device is correct, if If the URSP used by the terminal device is incorrect, the AM-PCF or UDR may be requested to re-issue the correct URSP to the terminal device, so that the URSP used by the terminal device is consistent with the URSP on the network side to ensure normal PDU session.
  • the first URSP includes, for example, a UE policy status information or a PSI list, and a policy content corresponding to the first URSP, at least one of the two.
  • FIG. 10 shows a schematic structural diagram of a communication device 1000.
  • the communication device 1000 can implement the functions of the third network element referred to above.
  • the communication device 1000 may be the third network element described above, or may be a chip disposed in the third network element described above, and the third network element is, for example, AMF, SM-PCF, NEF or UDM.
  • the communication device 1000 can include a processor 1001 and a transceiver 1002.
  • the processor 1001 may be configured to execute S73 in the embodiment shown in FIG.
  • the meta-communication device 1000 transmits a first URSP, the processor 1001 obtains information of the first application based on the first URSP, and/or other processes for supporting the techniques described herein.
  • the transceiver 1002 can be used to perform S72 in the embodiment shown in Figure 7, and/or other processes for supporting the techniques described herein.
  • the processor 1001 may be configured to execute S83 in the embodiment shown in FIG.
  • the meta-communication device 1000 transmits a first URSP, the processor 1001 obtains information of the first application based on the first URSP, and/or other processes for supporting the techniques described herein.
  • the transceiver 1002 can be used to perform S82 in the embodiment shown in FIG. 8, and/or other processes for supporting the techniques described herein.
  • the processor 1001 may be configured to execute S93 in the embodiment shown in FIG.
  • the UDM receives the first URSP from the UDR, and the processor 1001 may obtain the information of the first application according to the first URSP), and / or other processes used to support the techniques described herein.
  • the transceiver 1002 can be used to perform S91, S92, and S93 in the embodiment shown in FIG. 9, and/or other processes for supporting the techniques described herein.
  • the processor 1001 is configured to obtain information about a first application of the at least one PDU session, where the information of the first application is determined according to the first URSP;
  • the transceiver 1002 is configured to send information about the first application to a second network element, where information of the first application is used to verify information about a second application of the at least one PDU session and the first application Whether the information matches, the information of the second application is information of an application to which the data packet in the at least one PDU session belongs.
  • FIG. 11 shows a schematic structural diagram of a communication device 1100.
  • the communication device 1100 can implement the functions of the second network element referred to above.
  • the communication device 1100 may be the second network element described above, or may be a chip disposed in the second network element described above, and the second network element is, for example, an SMF or a UPF.
  • the communication device 1100 can include a processor 1101 and a transceiver 1102.
  • the processor 1101 can be used to perform S76 in the embodiment shown in FIG. 7, and/or other processes for supporting the techniques described herein.
  • the transceiver 1102 can be configured to execute S72, S73, S74 in the embodiment shown in FIG.
  • the transceiver 1102 sends third request information to the UPF, the third request information is used to instruct the UPF to determine at least one PDU session.
  • processor 1101 can be used to perform S86 in the embodiment shown in FIG. 8, and/or other processes for supporting the techniques described herein.
  • the transceiver 1102 can be configured to perform S82, S83, S84 in the embodiment shown in FIG. 8 (eg, the transceiver 1002 sends third request information to the UPF, the third request information is used to instruct the UPF to determine at least one PDU session.
  • processor 1101 can be used to perform S96 in the embodiment shown in FIG. 9, and/or other processes for supporting the techniques described herein.
  • the transceiver 1102 can be configured to perform S93, S94 in the embodiment shown in FIG. 9 (for example, the transceiver 1102 sends third request information to the UPF, where the third request information is used to indicate that the UPF determines the at least one PDU session.
  • the transceiver 1102 is configured to receive information about a first application of the at least one PDU session, where the information of the first application is determined according to the first URSP;
  • the processor 1101 is configured to determine whether information of the second application of the at least one PDU session matches information of the first application, where information of the second application belongs to a data packet in the at least one PDU session Application information;
  • the transceiver 1102 is further configured to: when the processor 1101 determines that the information of the second application and the information of the first application do not match, send the second request information to the first network element, where the second request information is And the method is used to request the first network element to send the first URSP.
  • FIG. 12 shows a schematic structural diagram of a communication device 1200.
  • the communication device 1200 can implement the functions of the first network element referred to above.
  • the communication device 1200 may be the first network element described above, or may be a chip disposed in the first network element described above, and the second network element is, for example, an AM-PCF or a UDR.
  • the communication device 1200 can include a processor 1201 and a transceiver 1202.
  • the processor 1201 may be configured to perform the step of obtaining the information of the first URSP or the first application according to the first request information in the embodiment shown in FIG. 7, and determining, according to the second request information, the step of delivering the first URSP, and / or other processes used to support the techniques described herein.
  • the transceiver 1002 can be used to perform S72, S73, S77, and S78 in the embodiment shown in FIG. 7, and/or other processes for supporting the techniques described herein.
  • the processor 1201 may be configured to perform the step of obtaining the information of the first URSP or the first application according to the first request information in the embodiment shown in FIG. 8, determining the step of issuing the first URSP according to the second request information, and / or other processes used to support the techniques described herein.
  • the transceiver 1002 can be used to perform S82, S83, S87, and S88 in the embodiment shown in FIG. 8, and/or other processes for supporting the techniques described herein.
  • the processor 1001 may be configured to perform the step of obtaining the information of the first URSP or the first application according to the first request information in the embodiment shown in FIG. 9, determining the step of issuing the first URSP according to the second request information, and / or other processes used to support the techniques described herein.
  • the transceiver 1002 can be used to perform S91, S92, S97, and S98 in the embodiment shown in FIG. 9, and/or other processes for supporting the techniques described herein.
  • the transceiver 1202 is configured to receive first request information sent by the third network element, where the first request information is used to request to obtain the first URSP, or information for requesting to obtain the first application of the at least one PDU session, The information of the first application is determined according to the first URSP;
  • the transceiver 1202 is further configured to: when the processor 1201 determines that the first request information is used to request to obtain the first URSP, send the first URSP to the third network element; or, at the processor 1201, determine the The first request information is used to request the information of the first application, and the information of the first application is sent to the third network element.
  • the communication device 1000, the communication device 1100, or the communication device 1200 can also be implemented by the structure of the communication device 1300 as shown in FIG. 13A.
  • the communication device 1300 can implement the functions of the first network element, the second network element, or the third network element involved in the foregoing.
  • the communication device 1300 can include a processor 1301.
  • the processor 1301 may be configured to execute S73 in the embodiment shown in FIG. 7 (for example, in the first request information for request)
  • the first network element transmits the first URSP to the communication device 1000
  • the processor 1001 obtains the information of the first application according to the first URSP, and/or is used for Other processes supporting the techniques described herein; or, when the communication device 1300 is used to implement the functions of the third network element referred to above, the processor 1301 may be configured to perform S83 in the embodiment shown in FIG.
  • the first network element sends the first URSP to the communication device 1000, and the processor 1001 obtains the first according to the first URSP.
  • the processor 1301 may be configured to perform S76 in the embodiment illustrated in FIG. 7, and/or to support the techniques described herein. Other processes; or, when the communication device 1300 is used to implement the functions of the second network element referred to above, the processor 1301 may be used to execute S86 in the embodiment shown in FIG. 8, and/or to support this document Other processes of the described technology; or, when the communication device 1300 is used to implement the functions of the second network element referred to above, the processor 1301 may be configured to perform S96 in the embodiment shown in FIG. 9, and / Or other processes for supporting the techniques described herein.
  • the processor 1301 may be used to execute the embodiment shown in FIG. 7, the embodiment shown in FIG. 8, or the embodiment shown in FIG. And the step of obtaining the information of the first URSP or the first application according to the first request information, determining the step of delivering the first URSP according to the second request information, and/or other processes for supporting the technology described herein.
  • the communication device 1300 can pass through a field-programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), a central processor (central processor). Unit, CPU), network processor (NP), digital signal processor (DSP), microcontroller (micro controller unit (MCU), or programmable logic device (programmable logic device,
  • FPGA field-programmable gate array
  • ASIC application specific integrated circuit
  • SoC system on chip
  • CPU central processor
  • NP network processor
  • DSP digital signal processor
  • MCU microcontroller
  • programmable logic device programmable logic device
  • the first device, the second network element, or the third network element may be configured in the first network element, the second network element, or the third network element of the embodiment of the present application, so that the first network element or the second network element or The third network element implements the method provided by the embodiment of the present application.
  • the communication device 1300 can include a transceiver component for communicating with other devices.
  • the transceiver component can be used to execute S72 in the embodiment shown in FIG. 7, and/or to support the technology described herein. Other processes; or, when the communication device 1300 is used to implement the functions of the third network element referred to above, the transceiver component can be used to perform S82 in the embodiment shown in FIG. 8, and/or to support the document Other processes of the described techniques; or, when the communication device 1300 is used to implement the functions of the third network element referred to above, the transceiver component can be used to perform S91, S92, and S93 in the embodiment shown in FIG. And/or other processes for supporting the techniques described herein.
  • the transceiver component may be used to execute S72, S73, S74 in the embodiment shown in FIG. 7 (for example, the transceiver component sends a third to the UPF) Requesting information, the third request information is used to instruct the UPF to determine information of an application to which the data packet in the at least one PDU session belongs, S75 and S77, and/or other processes for supporting the techniques described herein; or
  • the transceiver component may be used to execute S82, S83, S84 in the embodiment shown in FIG.
  • the transceiver component sends the third to the UPF
  • the third request information is used to instruct the UPF to determine information of an application to which the data packet in the at least one PDU session belongs, S85 and S87, and/or other processes for supporting the techniques described herein; or
  • the transceiver component can be used to execute 93, S94 in the embodiment shown in FIG. 9 (for example, the transceiver component sends the third request information to the UPF.
  • UPF third request information indicating the application identification information of the at least one PDU packet session belongs
  • S95 and S97 and / or other processes for the techniques described herein support.
  • the transceiver component may be used to execute S72, S73, S77, and S78 in the embodiment shown in FIG. 7, and/or to support this document. Other processes of the described techniques; or, when the communication device 1300 is used to implement the functions of the first network element referred to above, the transceiver component can be used to execute S82, S83, S87 in the embodiment shown in FIG. And S88, and/or other processes for supporting the techniques described herein; or, when the communication device 1300 is used to implement the functions of the first network element referred to above, the transceiver component can be used to perform the process shown in FIG. S91, S92, S97, and S98 in the embodiments, and/or other processes for supporting the techniques described herein.
  • the communication device 1300 can further include a memory 1302, which can be referred to FIG. 13B, where the memory 1302 is used to store computer programs or instructions, and the processor 1301 is used to decode and execute the computer programs or instructions. .
  • these computer programs or instructions may include functional programs of the first network element, the second network element, or the third network element described above.
  • the first network element may be implemented in the embodiment shown in FIG. 7 of the embodiment of the present application, the embodiment shown in FIG. 8 or the embodiment shown in FIG. The function of the first network element in the method provided by the embodiment.
  • the second network element can be implemented as the embodiment shown in FIG. 7 of the embodiment of the present application, the embodiment shown in FIG. 8 or the embodiment shown in FIG. The function of the second network element in the method provided by the embodiment.
  • the third network element may be implemented as the embodiment shown in FIG. 7 of the embodiment of the present application, the embodiment shown in FIG. 8 or the embodiment shown in FIG. The function of the third network element in the method provided by the embodiment.
  • the functional programs of the first network element, the second network element, or the third network element are stored in a memory external to the communication device 1300.
  • the function program of the first network element is decoded and executed by the processor 1301, part or all of the content of the function program of the first network element is temporarily stored in the memory 1302.
  • the function program of the second network element is decoded and executed by the processor 1301, part or all of the content of the function program of the second network element is temporarily stored in the memory 1302.
  • the function program of the third network element is decoded and executed by the processor 1301, part or all of the content of the function program of the third network element is temporarily stored in the memory 1302.
  • the functional programs of the first network element, the second network element, or the third network element are disposed in the memory 1302 stored in the communication device 1300.
  • the communication device 1300 can be disposed in the first network element of the embodiment of the present application.
  • the function program of the second network element is stored in the memory 1302 of the communication device 1300
  • the communication device 1300 can be disposed in the second network element of the embodiment of the present application.
  • the function program of the third network element is stored in the memory 1302 of the communication device 1300, the communication device 1300 can be disposed in the third network element of the embodiment of the present application.
  • part of the content of the function program of the first network element is stored in a memory outside the communication device 1300, and other parts of the function program of the first network element are stored in the communication device 1300.
  • portions of the functional programs of the second network elements are stored in a memory external to the communication device 1300, and other portions of the functional programs of the second network elements are stored in the memory 1302 inside the communication device 1300.
  • portions of the functional programs of the third network elements are stored in a memory external to the communication device 1300, and other portions of the functional programs of the third network elements are stored in the memory 1302 inside the communication device 1300.
  • the communication device 1000, the communication device 1100, the communication device 1200, and the communication device 1300 are presented in the form of dividing each function into individual functional modules, or may be presented in an integrated manner to divide the functional modules.
  • a “module” herein may refer to an ASIC, a processor and memory that executes one or more software or firmware programs, integrated logic circuitry, and/or other devices that provide the functionality described above.
  • the communication device 1000 provided by the embodiment shown in FIG. 10 can also be implemented in other forms.
  • the communication device includes a processing module and a transceiver module.
  • the processing module can be implemented by the processor 1001, and the transceiver module can be implemented by the transceiver 1002.
  • the processing module may be configured to execute S73 in the embodiment shown in FIG. 7 (for example, in a case where the first request information is used to request information of obtaining the first application of the URSP or the at least one PDU session, the first network element
  • the first URSP is sent to the communication device, the processing module obtains information of the first application based on the first URSP, and/or other processes for supporting the techniques described herein.
  • the transceiver module can be used to perform S72 in the embodiment shown in Figure 7, and/or other processes for supporting the techniques described herein.
  • the processing module may be configured to execute S83 in the embodiment shown in FIG. 8 (for example, in case the first request information is used to request information of obtaining the URSP or the first application of the at least one PDU session, the first network element
  • the first URSP is sent to the communication device, the processing module obtains information of the first application based on the first URSP, and/or other processes for supporting the techniques described herein.
  • the transceiver module can be used to perform S82 in the embodiment shown in Figure 8, and/or other processes for supporting the techniques described herein.
  • the processing module may be configured to execute S93 in the embodiment shown in FIG.
  • the processing module may obtain the information of the first application according to the first URSP), and/or Other processes for supporting the techniques described herein.
  • the transceiver module can be used to perform S91, S92, and S93 in the embodiment shown in FIG. 9, and/or other processes for supporting the techniques described herein.
  • the processing module is configured to obtain information about a first application of the at least one PDU session, where the information of the first application is determined according to the first URSP;
  • a transceiver module configured to send information of the first application to a second network element, where the information of the first application is used to verify information about a second application of the at least one PDU session and information of the first application Whether the information of the second application is the information of the application to which the data packet in the at least one PDU session belongs.
  • the communication device 1100 provided by the embodiment shown in FIG. 11 can also be implemented in other forms.
  • the communication device includes a processing module and a transceiver module.
  • the processing module can be implemented by the processor 1101, and the transceiver module can be implemented by the transceiver 1102.
  • the processing module can be used to perform S76 in the embodiment shown in FIG. 7, and/or other processes for supporting the techniques described herein.
  • the transceiver module may be configured to execute S72, S73, and S74 in the embodiment shown in FIG. 7 (for example, the transceiver module sends third request information to the UPF, where the third request information is used to indicate that the UPF determines the at least one PDU session.
  • the processing module can be used to perform S86 in the embodiment shown in FIG. 8, and/or other processes for supporting the techniques described herein.
  • the transceiver module may be configured to execute S82, S83, and S84 in the embodiment shown in FIG. 8 (for example, the transceiver module sends third request information to the UPF, where the third request information is used to indicate that the UPF determines the at least one PDU session.
  • the processing module can be used to perform S96 in the embodiment shown in FIG.
  • the transceiver module may be configured to execute S93, S94 in the embodiment shown in FIG. 9 (for example, the transceiver module sends third request information to the UPF, where the third request information is used to instruct the UPF to determine a data packet in the at least one PDU session.
  • the transceiver module is configured to receive information of the first application of the at least one PDU session, where the information of the first application is determined according to the first URSP;
  • a processing module configured to determine whether information of the second application of the at least one PDU session matches information of the first application, where information of the second application is an application to which the data packet in the at least one PDU session belongs Information;
  • a transceiver module configured to send second request information to the first network element, where the processing module determines that the information of the second application and the information of the first application do not match, the second request information is used for requesting The first network element sends the first URSP.
  • the communication device 1200 provided by the embodiment shown in FIG. 12 can also be implemented in other forms.
  • the communication device includes a processing module and a transceiver module.
  • the processing module can be implemented by the processor 1201, and the transceiver module can be implemented by the transceiver 1202.
  • the processing module may be configured to perform the step of obtaining the information of the first URSP or the first application according to the first request information in the embodiment shown in FIG. 7 , determining the step of issuing the first URSP according to the second request information, and/or Or other processes for supporting the techniques described herein.
  • the transceiver module can be used to perform S72, S73, S77, and S78 in the embodiment shown in Figure 7, and/or other processes for supporting the techniques described herein.
  • the processing module may be configured to perform the step of obtaining the information of the first URSP or the first application according to the first request information in the embodiment shown in FIG. 8 , determining the step of issuing the first URSP according to the second request information, and/or Or other processes for supporting the techniques described herein.
  • the transceiver module can be used to perform S82, S83, S87, and S88 in the embodiment shown in FIG. 8, and/or other processes for supporting the techniques described herein.
  • the processing module may be configured to perform the step of obtaining the information of the first URSP or the first application according to the first request information in the embodiment shown in FIG.
  • the transceiver module can be used to perform S91, S92, S97, and S98 in the embodiment shown in Figure 9, and/or other processes for supporting the techniques described herein.
  • the transceiver module is configured to receive first request information sent by the third network element, where the first request information is used to request to obtain the first URSP, or information for requesting to obtain the first application of the at least one PDU session, where The information of the first application is determined according to the first URSP;
  • the transceiver module is further configured to: when the processing module determines that the first request information is used to request to obtain the first URSP, send the first URSP to the third network element; or, the processing module determines the first request The information is used to request the information of the first application, and the information of the first application is sent to the third network element.
  • the communication device 1000, the communication device 1100, the communication device 1200, and the communication device 1300 provided in the embodiments of the present application may be used to perform the embodiment shown in FIG. 7, the embodiment shown in FIG. 8, or the embodiment shown in FIG.
  • the communication device 1000, the communication device 1100, the communication device 1200, and the communication device 1300 provided in the embodiments of the present application may be used to perform the embodiment shown in FIG. 7, the embodiment shown in FIG. 8, or the embodiment shown in FIG.
  • Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG.
  • These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device.
  • the computer program product includes one or more computer instructions.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another readable storage medium, for example, the computer instructions can be passed from a website site, computer, server or data center Wired (eg, coaxial cable, fiber, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.) to another website site, computer, server, or data center.
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD) ))Wait.
  • a magnetic medium eg, a floppy disk, a hard disk, a magnetic tape
  • an optical medium eg, a digital versatile disc (DVD)
  • DVD digital versatile disc
  • semiconductor medium eg, a solid state disk (SSD)

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Abstract

一种通信方法及装置，用于验证终端装置使用的用户设备路由选择策略（URSP）。其中的一种通信方法包括：获得至少一个分组数据单元（PDU）会话的第一应用的信息，所述第一应用的信息根据第一URSP所确定；将所述第一应用的信息发送给第二网元，所述第一应用的信息用于验证所述至少一个PDU会话的第二应用的信息和所述第一应用的信息是否匹配，所述第二应用的信息为所述至少一个PDU会话中的数据包所属的应用的信息。

Description

一种通信方法及装置
本申请要求在2018年4月28日提交中国专利局、申请号为201810402954.3、申请名称为“一种通信方法及装置”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
本申请涉及移动通信技术领域，尤其涉及一种通信方法及装置。
背景技术
在第五代移动通信技术(5 Generation，5G)中，引入了用户设备(user eqipment，UE)相关的策略信息，即用户设备路由选择策略(UE route selection policy，URSP)，由终端装置作为策略的执行者，为上行业务流选择一个合适的分组数据单元(packet data unit，PDU)会话。即某些业务对使用的PDU会话的数据网络名称(data network name，DNN)，单网络切片选择辅助信息(single network slice selection assistance information，S-NSSAI)，会话和业务连续性(session and service continuity，SSC)模式(mode)等具有一定的要求。
在实际使用URSP时，终端装置使用的URSP可能与网络侧下发的URSP并不相同，即，终端装置使用的URSP有误。其中，URSP可以是用于接入和移动性管理(access and mobility management，AM)策略控制的策略控制功能(policy control function，PCF)下发的。例如，终端装置初始进入一个网络，未能获得该网络的URSP，或终端装置恶意使用特性较好的PDU会话，或终端装置的内部算法错误等，都可能导致终端装置使用的URSP与网络侧下发的URSP不同，这样可能会导致PDU会话出错。
发明内容
本申请实施例提供一种通信方法及装置，用于验证终端装置使用的URSP。
第一方面，提供第一种通信方法，该方法可由第一种通信装置执行，第一种通信装置例如为SM-PCF或设置在SM-PCF中的芯片，或者第一种通信装置例如为AMF或设置在AMF中的芯片，或者第一种通信装置例如为UDM或设置在UDM中的芯片。该方法包括：获得至少一个分组数据单元PDU会话的第一应用的信息，所述第一应用的信息根据第一用户设备路由选择策略URSP所确定，将所述第一应用的信息发送给第二网元，所述第一应用的信息用于验证所述至少一个PDU会话的第二应用的信息和所述第一应用的信息是否匹配，所述第二应用的信息为所述至少一个PDU会话中的数据包所属的应用的信息。
本申请实施例中，第一种通信装置可以获得第一应用的信息，并发送给第二网元，从而第二网元可以根据第一应用的信息来验证至少一个PDU会话的第二应用的信息和第一应用的信息是否匹配，也就是验证终端装置使用的URSP与网络侧的URSP是否一致，从而为验证终端装置的URSP的正确性提供了一种实现机制，保证PDU会话的正常进行。
在一个可能的设计中，获得至少一个PDU会话的第一应用的信息，包括：向第一网元发送第一请求信息，所述第一请求信息用于请求获得所述第一应用的信息，接收所述第一应用的信息；或，向第一网元发送第一请求信息，所述第一请求信息用于请求获得所述第一URSP，接收所述第一URSP，并根据所述第一URSP获得所述第一应用的信息。
在本申请实施例中，第一种通信装置可以通过向第一网元发送第一请求信息来获得第一应用的信息，其中，第一请求信息可以用于请求第一URSP，或用于请求获得第一应用的信息，如果第一请求信息用于请求获得第一URSP，则该通信装置可以根据第一URSP来得到第一应用的信息，方式较为灵活。
在一个可能的设计中，所述第一请求信息包括第一PDU会话的标识信息，所述至少一个PDU会话为所述第一PDU会话。
在本申请实施例中，第一请求信息可以请求多个PDU会话的第一应用的信息，或多个PDU会话对应的URSP，或者，第一请求信息也可以请求特定的一个PDU会话的第一应用的信息，或一个PDU会话对应的URSP，也就是说，至少一个PDU会话的数量可以是一个或多个，可满足不同的需求。如果请求一个PDU会话的第一应用的信息或对应的URSP，则只需在第一请求信息里携带相应的PDU会话的标识信息即可，方式较为简单。
第二方面，提供第二种通信方法，该方法可由第二种通信装置执行，第二种通信装置例如为SMF或设置在SMF中的芯片，或者第二种通信装置例如为UPF或设置在UPF中的芯片。该方法包括：接收至少一个PDU会话的第一应用的信息，其中，所述第一应用的信息根据第一URSP所确定，确定所述至少一个PDU会话的第二应用的信息和所述第一应用的信息是否匹配，所述第二应用的信息为所述至少一个PDU会话中的数据包所属的应用的信息，在确定所述第二应用的信息和所述第一应用的信息不匹配的情况下，向第一网元发送第二请求信息，所述第二请求信息用于请求所述第一网元下发所述第一URSP。
在本申请实施例中，第二种通信装置可以验证至少一个PDU会话的第二应用的信息和第一应用的信息是否匹配，也就是验证终端装置使用的URSP与网络侧的URSP是否一致，从而为验证终端装置的URSP的正确性提供了一种实现机制，保证PDU会话的正常进行。并且如果确定终端装置使用的URSP与网络侧的URSP不一致，则第二种通信装置可以请求第一网元下发第一URSP，从而使得终端装置可以更新所使用的URSP，使终端装置使用的URSP与网络侧的URSP保持一致，降低了网络的出错率。
在一个可能的设计中，所述方法还包括：向所述第一网元发送第一请求信息，所述第一请求信息用于请求获得所述第一应用的信息，或用于请求获得所述第一URSP。
在介绍第一方面的通信方法时曾介绍了，第一种通信装置可以向第一网元发送第一请求信息，那么，第一请求信息可以由第二种通信装置先发送给第一种通信装置，再由第一种通信装置转发给第一网元。可理解为，第二种通信装置与第一网元之间可能无法直接通信，那么可由第一种通信装置实现转发，使得第一网元能够接收第一请求信息。
在一个可能的设计中，所述方法还包括：向UPF发送第三请求信息，所述第三请求信息用于指示所述UPF确定所述至少一个PDU会话中的数据包所属的应用的信息，接收所述UPF发送的所述第二应用的信息。
在一个可能的设计中，所述方法还包括：检测所述至少一个PDU会话中传输的数据包所属的应用，得到所述第二应用的信息。
也就是说，可以由UPF来确定第二应用的信息，再将第二应用的信息发送给第二种通信装置，或者也可以由第二种通信装置自行确定第二应用的信息，可根据实际情况选择不同的方式，较为灵活。
在一个可能的设计中，向第一网元发送第二请求信息，包括：向AMF发送所述第二请求信息，以通过所述AMF将所述第二请求信息转发给所述第一网元；或，向第一PCF 发送所述第二请求信息，以通过所述第一PCF将所述第二请求信息转发给所述第一网元，所述第一PCF为与SMF相连的PCF。
可能第二种通信装置与第一网元之间也无法实现直接通信，因此需要有网元在中间进行转发，在本申请实施例中，可选择通过AMF来转发，也可以选择通过第一PCF来转发，当然这只是两种示例，还可以通过其他的网元来转发，只要能将第二请求信息转发给第一网元即可，方式较为灵活，可根据情况选择不同的路径。
在一个可能的设计中，所述第一网元为第二PCF或UDR，所述第二PCF为用于AM策略控制的PCF。
这里只是示例，本申请实施例不限制第一网元的具体实现方式。
第三方面，提供第三种通信方法，该方法可由第三种通信装置执行，第三种通信装置例如为AM-PCF或设置在AM-PCF中的芯片，或者第三种通信装置例如为UDR或设置在AM-PCF中的芯片。该方法包括：接收第三网元发送的第一请求信息，所述第一请求信息用于请求获得第一URSP，或用于请求获得至少一个PDU会话的第一应用的信息，其中，所述第一应用的信息根据第一URSP所确定，在所述第一请求信息用于请求获得第一URSP的情况下，向所述第三网元发送第一URSP；或，在所述第一请求信息用于请求获得所述第一应用的信息的情况下，向所述第三网元发送所述第一应用的信息。
在本申请实施例中，为了验证终端装置使用的URSP，需要用到网络侧的URSP，或者第一应用的信息，而网络侧的URSP就存储在第三种通信装置中，第一应用的信息也需要根据第一URSP来确定，因此，第三网元可以向第三种通信装置发送第一请求信息，以请求获得第一URSP，或至少一个PDU会话的第一应用的信息，例如第三网元可以将第一URSP或第一应用的信息发送给第二网元，从而第二网元可以根据第一应用的信息来验证至少一个PDU会话的第二应用的信息和第一应用的信息是否匹配，也就是验证终端装置使用的URSP与网络侧的URSP是否一致，从而为验证终端装置的URSP的正确性提供了一种实现机制，保证PDU会话的正常进行。
在一个可能的设计中，所述第一请求信息还携带第一PDU会话的标识信息；所述第一请求信息用于请求获得用于确定所述第一PDU会话的第一应用的信息的所述第一URSP，或，所述第一请求信息用于请求获得所述第一PDU会话的第一应用的信息，所述第一应用的信息包括所述第一PDU会话的第一应用的信息。
在本申请实施例中，第一请求信息可以请求多个PDU会话的第一应用的信息，或多个PDU会话对应的URSP，或者，第一请求信息也可以请求特定的一个PDU会话的第一应用的信息，或一个PDU会话对应的URSP，也就是说，至少一个PDU会话的数量可以是一个或多个，可满足不同的需求。如果请求一个PDU会话的第一应用的信息或对应的URSP，则只需在第一请求信息里携带相应的PDU会话的标识信息即可，方式较为简单。
在一个可能的设计中，所述方法还包括：接收所述第三网元发送的第二请求信息，所述第二请求信息用于请求下发所述第一URSP，发送所述第一URSP。
在本申请实施例中，如果确定终端装置使用的URSP与网络侧的URSP不一致，则第三网元可以请求第一网元下发第一URSP，从而使得终端装置可以更新所使用的URSP，使终端装置使用的URSP与网络侧的URSP保持一致，降低了网络的出错率。
第四方面，提供第一种通信装置，该通信装置例如为SM-PCF或AMF或UDM。该通信装置具有实现上述方法设计中的SM-PCF或AMF或UDM的功能。这些功能可以通过 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与上述功能相对应的单元。
在一个可能的设计中，该通信装置的具体结构可包括处理器和收发器。处理器和收发器可执行上述第一方面或第一方面的任意一种可能的设计所提供的方法中的相应功能。
第五方面，提供第二种通信装置，该通信装置例如为SMF或UPF。该通信装置具有实现上述方法设计中的SMF或UPF的功能。这些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与上述功能相对应的单元。
在一个可能的设计中，该通信装置的具体结构可包括处理器和收发器。处理器和收发器可执行上述第二方面或第二方面的任意一种可能的设计所提供的方法中的相应功能。
第六方面，提供第三种通信装置，该通信装置例如为AM-PCF或UDR。该通信装置具有实现上述方法设计中的AM-PCF或UDR的功能。这些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与上述功能相对应的单元。
在一个可能的设计中，该通信装置的具体结构可包括处理器和收发器。处理器和收发器可执行上述第三方面或第三方面的任意一种可能的设计所提供的方法中的相应功能。
第七方面，提供第一种通信装置，该通信装置例如为SM-PCF或AMF或UDM。该通信装置具有实现上述方法设计中的SM-PCF或AMF或UDM的功能。这些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与上述功能相对应的单元。
在一个可能的设计中，该通信装置的具体结构可包括处理模块和收发模块。处理模块和收发模块可执行上述第一方面或第一方面的任意一种可能的设计所提供的方法中的相应功能。
第八方面，提供第二种通信装置，该通信装置例如为SMF或UPF。该通信装置具有实现上述方法设计中的SMF或UPF的功能。这些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与上述功能相对应的单元。
在一个可能的设计中，该通信装置的具体结构可包括处理模块和收发模块。处理模块和收发模块可执行上述第二方面或第二方面的任意一种可能的设计所提供的方法中的相应功能。
第九方面，提供第三种通信装置，该通信装置例如为AM-PCF或UDR。该通信装置具有实现上述方法设计中的AM-PCF或UDR的功能。这些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与上述功能相对应的单元。
在一个可能的设计中，该通信装置的具体结构可包括处理模块和收发模块。处理模块和收发模块可执行上述第三方面或第三方面的任意一种可能的设计所提供的方法中的相应功能。
第十方面，提供第一种通信装置。该通信装置可以为上述方法设计中的SM-PCF或AMF或UDM，或者为设置在SM-PCF或AMF或UDM中的芯片。该通信装置包括：存储器，用于存储计算机可执行程序代码；以及处理器，处理器与存储器耦合。其中存储器所存储的程序代码包括指令，当处理器执行所述指令时，使通信装置执行上述第一方面或第一方面的任意一种可能的设计中的方法。
第十一方面，提供第二种通信装置。该通信装置可以为上述方法设计中的SMF或UPF，或者为设置在SMF或UPF中的芯片。该通信装置包括：存储器，用于存储计算机可执行程序代码；以及处理器，处理器与存储器耦合。其中存储器所存储的程序代码包括指令，当处理器执行所述指令时，使通信装置执行上述第二方面或第二方面的任意一种可能的设计中的方法。
第十二方面，提供第三种通信装置。该通信装置可以为上述方法设计中的AM-PCF或UDR，或者为设置在AM-PCF或UDR中的芯片。该通信装置包括：存储器，用于存储计算机可执行程序代码；以及处理器，处理器与存储器耦合。其中存储器所存储的程序代码包括指令，当处理器执行所述指令时，使通信装置执行上述第三方面或第三方面的任意一种可能的设计中的方法。
第十三方面，提供一种通信系统，该通信系统包括第一种通信装置、第二种通信装置和第三种通信装置；其中，所述第一种通信装置，用于获得至少一个PDU会话的第一应用的信息，所述第一应用的信息根据第一URSP所确定，将所述第一应用的信息发送给第二种通信装置，所述第一应用的信息用于验证所述至少一个PDU会话的第二应用的信息和所述第一应用的信息是否匹配，所述第二应用的信息为所述至少一个PDU会话中的数据包所属的应用的信息；所述第二种通信装置，用于接收至少一个PDU会话的第一应用的信息，其中，所述第一应用的信息根据第一URSP所确定，确定所述至少一个PDU会话的第二应用的信息和所述第一应用的信息是否匹配，所述第二应用的信息为所述至少一个PDU会话中的数据包所属的应用的信息，在确定所述第二应用的信息和所述第一应用的信息不匹配的情况下，向第三种通信装置发送第二请求信息，所述第二请求信息用于请求所述第一网元下发所述第一URSP；所述第三种通信装置，用于接收第一种通信装置发送的第一请求信息，所述第一请求信息用于请求获得第一URSP，或用于请求获得至少一个PDU会话的第一应用的信息，其中，所述第一应用的信息根据第一URSP所确定，在所述第一请求信息用于请求获得第一URSP的情况下，向所述第一种通信装置发送第一URSP；或，在所述第一请求信息用于请求获得所述第一应用的信息的情况下，向所述第一种通信装置发送所述第一应用的信息。
第十四方面，提供一种计算机存储介质，所述计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行上述第一方面或第一方面的任意一种可能的设计中所述的方法。
第十五方面，提供一种计算机存储介质，所述计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行上述第二方面或第二方面的任意一种可能的设计中所述的方法。
第十六方面，提供一种计算机存储介质，所述计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行上述第三方面或第三方面的任意一种可能的设计中所述的方法。
第十七方面，提供一种包含指令的计算机程序产品，所述计算机程序产品中存储有指令，当其在计算机上运行时，使得计算机执行上述第一方面或第一方面的任意一种可能的设计中所述的方法。
第十八方面，提供一种包含指令的计算机程序产品，所述计算机程序产品中存储有指令，当其在计算机上运行时，使得计算机执行上述第二方面或第二方面的任意一种可能的 设计中所述的方法。
第十九方面，提供一种包含指令的计算机程序产品，所述计算机程序产品中存储有指令，当其在计算机上运行时，使得计算机执行上述第三方面或第三方面的任意一种可能的设计中所述的方法。
本申请实施例中，第二网元可以验证终端装置使用的URSP与网络侧的URSP是否一致，从而为验证终端装置的URSP的正确性提供了一种实现机制，保证PDU会话的正常进行。
附图说明
图1～图6为本申请实施例的几种应用场景的示意图；
图7～图9为本申请实施例提供的三种通信方法的流程图；
图10为本申请实施例提供的可实现第三网元的功能的通信装置的一种结构示意图；
图11为本申请实施例提供的可实现第二网元的功能的通信装置的一种结构示意图；
图12为本申请实施例提供的可实现第一网元的功能的通信装置的一种结构示意图；
图13A-图13B为本申请实施例提供的通信装置的两种结构示意图。
具体实施方式
为了使本发明实施例的目的、技术方案和优点更加清楚，下面将结合附图对本发明实施例作进一步地详细描述。
以下，对本申请实施例中的部分用语进行解释说明，以便于本领域技术人员理解。
1)终端装置，包括向用户提供语音和/或数据连通性的设备，例如可以包括具有无线连接功能的手持式设备、或连接到无线调制解调器的处理设备。该终端装置可以经无线接入网(radio access network，RAN)与核心网进行通信，与RAN交换语音和/或数据。该终端装置可以包括用户设备(user equipment，UE)、无线终端装置、移动终端装置、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、移动台(mobile)、远程站(remote station)、接入点(access point，AP)、远程终端装置(remote terminal)、接入终端装置(access terminal)、用户终端装置(user terminal)、用户代理(user agent)、或用户装备(user device)等。例如，可以包括移动电话(或称为“蜂窝”电话)，具有移动终端装置的计算机，便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，智能穿戴式设备等。例如，个人通信业务(personal communication service，PCS)电话、无绳电话、会话发起协议(session initiation protocol，SIP)话机、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、等设备。还包括受限设备，例如功耗较低的设备，或存储能力有限的设备，或计算能力有限的设备等。例如包括条码、射频识别(radio frequency identification，RFID)、传感器、全球定位系统(global positioning system，GPS)、激光扫描器等信息传感设备。
作为示例而非限定，在本申请实施例中，该终端装置还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜 等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能头盔、智能首饰等。
2)网元，或称为网络设备，例如包括接入网网元，或称为接入网设备，例如基站(例如，接入点)和用户面功能(user plane function，UPF)等。
其中，基站可以是指接入网中在空中接口上通过一个或多个小区与无线终端装置通信的设备。网元可用于将收到的空中帧与网际协议(IP)分组进行相互转换，作为终端装置与接入网的其余部分之间的路由器，其中接入网的其余部分可包括IP网络。网元还可协调对空中接口的属性管理。例如，网元可以包括长期演进(long term evolution，LTE)系统或演进的LTE系统(LTE-Advanced，LTE-A)中的演进型基站(NodeB或eNB或e-NodeB，evolutional Node B)，或者也可以包括第五代移动通信技术(fifth generation，5G)新无线(new radio，NR)系统中的下一代节点B(next generation node B，gNB)或者也可以包括云接入网(CloudRAN)系统中的集中式单元(centralized unit，CU)和分布式单元(distributed ynit，DU)，本申请实施例并不限定。
UPF是用户面的功能网元，主要负责连接外部网络，可以认为，UPF相当于LTE中的服务网关(serving gateway，SGW)和分组数据网络网关(packet data network gateway，PDN-GW)的合体。
在本申请实施例中，网元还包括核心网网元，或称为核心网设备，例如包括策略控制功能(policy control function，PCF)、统一数据库(unified data repository，UDR)、接入和移动性管理功能(access and mobility management function，AMF)或会话管理功能(session management function，SMF)等。其中，在5G系统中，移动管理(mobility management entity，MME)的功能分离到AMF和SMF中，其中，AMF用于管理用户的移动上下文，SMF用于管理会话上下文。
另外，根据5G的现有标准，AMF和SMF可以选择不同的PCF进行策略控制。为了区分方便，我们称用于AM策略控制的PCF为AM-PCF，或称为第二PCF，简称AM-PCF或第二PCF，以及，与SMF相连的为SM-PCF，或称为第一PCF，简称SM-PCF或第一PCF。需注意的是，AM-PCF和SM-PCF只是角色的区分，对各个PCF的功能不作限制和区分。可选的，AM-PCF和SM-PCF可以是不同的PCF，也可以是同一个PCF。
3)URSP，在5G中，引入了URSP，由终端装置执行URSP，为上行业务流选择符合该URSP的PDU会话，即某些业务对使用的PDU会话的DNN，切片，SSC mode等具有一定的要求。可以理解为，URSP规定了PDU会话的属性应该对应哪些应用，例如PDU会话有多种属性，不同的PDU会话可能属性不同，那么URSP就是规定了PDU会话的各种属性所应该对应的应用。例如第一PDU会话具有第一属性，根据URSP就可以确定第一属性对应的应用，从而这些应用就是第一PDU会话被允许使用的应用。
URSP是网络侧制定的，一般要求，终端装置使用的URSP与网络侧的URSP需要一致，这样终端装置所选择的PDU会话才能满足网络侧的要求。
4)本申请实施例中的术语“系统”和“网络”可被互换使用。“多个”是指两个或两个以上，鉴于此，本申请实施例中也可以将“多个”理解为“至少两个”。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，字符“/”，如无特殊说明，一般表示前后关联对象是一种“或”的关系。
以及，除非有相反的说明，本申请实施例提及“第一”、“第二”等序数词是用于对多个对象进行区分，不用于限定多个对象的顺序、时序、优先级或者重要程度。
下面介绍本申请实施例的技术背景。
在5G中，引入了URSP，由终端装置作为策略的执行者，为上行业务流选择一个合适的PDU会话。即某些业务对使用的PDU会话的DNN，切片，SSC mode等具有一定的要求。
URSP是网络侧制定的，要求终端装置使用的URSP与网络侧存储的URSP一致，这样才能保证终端装置和网络侧之间的正常通信。但在实际使用URSP时，终端装置使用的URSP可能与网络侧下发的URSP并不相同，例如，终端装置初始进入一个网络，未能获得该网络的URSP，或终端装置恶意使用特性较好的PDU会话，或终端装置的内部算法错误等，都可能导致终端装置使用的URSP与网络侧下发的URSP不同，这样可能会导致PDU会话出错。
鉴于此，提供本申请实施例的技术方案，以验证终端装置的URSP是否与网络侧的URSP一致。
本申请实施例提供的技术方案可以普遍适用于5G系统的非漫游场景和漫游场景，下面分别介绍这几种场景。在下面的场景介绍中，终端装置以UE为例。
请参考图1，为5G系统中的非漫游场景的第一种架构图，图1中，控制面使用的是基于服务的接口(service-based interfaces are used within the control plane)。图1中，网络切片选择功能(network slice selection function，NSSF)、网络业务呈现功能(network exposure function，NEF)、网元数据仓库功能(NF repository function，NRF)、PCF、统一数据管理(unified data management，UDM)、应用功能(application function，AF)、鉴权服务功能(authentication server function，AUSF)、AMF和SMF均连接到同一连接线，其中，NSSF通过Nnssf接口与该连接线连接，NEF通过Nnef接口与该连接线连接，NRF通过Nnrf接口与该连接线连接，PCF通过Npcf接口与该连接线连接，UDM通过Nudm接口与该连接线连接，AF通过Naf接口与该连接线连接，AUSF通过Nausf接口与该连接线连接，AMF通过Namf接口与该连接线连接，SMF通过Nsmf接口与该连接线连接。另外，AMF还通过N2接口与(无线)接入网(radio access network，(R)AN)通信，以及通过N1与UE通信，UE能够与(R)AN通信，(R)AN通过N3接口与UPF通信，UPF通过N4接口与SMF连接，以及通过N6接口与数据网络(data network，DN)连接。
请参考图2，为5G系统中的非漫游场景的第二种架构图，图2为参考点(reference point)架构。图2中，UE可通过(R)AN与AMF通信，其中(R)AN通过N2接口与AMF通信。另外UE也可通过N1接口直接与AMF通信。另外(R)AN还通过N3接口与UPF通信，UPF通过N9接口与其他的UPF通信，UPF还通过N6接口与DN通信，以及通过N4接口与SMF通信。AMF通过N14接口与其他的AMF通信，AMF还通过N11接口与SMF通信、通过N12接口与AUSF通信、通过N8接口与UDM通信、通过N15接口与PCF通信、以及通过N22接口与NSSF通信，SMF通过N10接口与UDM通信，以及通过N7接口与PCF通信，PCF通过N5接口与AF通信。
请参考图3，为5G系统中的漫游场景的第一种架构图，图3为本地疏导(local breakout，LBO)场景。图3中，访问公共陆地移动网络(visit public land mobile network，VPLMN)表示UE漫游之后所在的网络，归属公共陆地移动网络(home public land mobile network， HPLMN)表示UE漫游之前所在的网络，也就是说，UE是从HPLMN漫游到了VPLMN。VPLMN中，NSSF、NEF、NRF、PCF、AF、AMF和SMF均连接到同一连接线，其中，NSSF通过Nnssf接口与该连接线连接，NEF通过Nnef接口与该连接线连接，NRF通过Nnrf接口与该连接线连接，PCF通过Npcf接口与该连接线连接，AF通过Naf接口与该连接线连接，AMF通过Namf接口与该连接线连接，SMF通过Nsmf接口与该连接线连接，该连接线还连接了访问安全边缘保护代理(visit security edge protection proxy，vSEPP)。另外，AMF还通过N2接口与(无线)接入网(radio access network，(R)AN)通信，以及通过N1与UE通信，UE能够与(R)AN通信，(R)AN通过N3接口与UPF通信，UPF通过N4接口与SMF连接，以及通过N6接口与DN连接。HPLMN中，UDM、NRF、NSSF、AUSF、PCF和NEF均与同一连接线连接，其中，UDM通过Nudm接口与该连接线连接，NSSF通过Nnssf接口与该连接线连接，NEF通过Nnef接口与该连接线连接，NRF通过Nnrf接口与该连接线连接，PCF通过Npcf接口与该连接线连接，该连接线还连接了hSEPP，且vSEPP和归属安全边缘保护代理(home security edge protection proxy，hSEPP)通过N32接口连接。
请参考图4，为5G系统中的漫游场景的第二种架构图，图4为LBO场景。图4中，VPLMN表示UE漫游之后所在的网络，HPLMN表示UE漫游之前所在的网络。VPLMN中，NSSF、NEF、NRF、PCF、AMF和SMF均连接到同一连接线，其中，NSSF通过Nnssf接口与该连接线连接，NEF通过Nnef接口与该连接线连接，NRF通过Nnrf接口与该连接线连接，PCF通过Npcf接口与该连接线连接，AMF通过Namf接口与该连接线连接，SMF通过Nsmf接口与该连接线连接，该连接线还连接了vSEPP。另外，AMF还通过N2接口与(R)AN通信，以及通过N1与UE通信，UE能够与(R)AN通信，(R)AN通过N3接口与UPF通信，UPF通过N4接口与SMF连接，以及通过N9接口与HPLMN中的UPF连接。HPLMN中，UDM、NRF、AUSF、SMF、AF、PCF和NEF均与同一连接线连接，其中，UDM通过Nudm接口与该连接线连接，NSSF通过Nnssf接口与该连接线连接，NEF通过Nnef接口与该连接线连接，NRF通过Nnrf接口与该连接线连接，PCF通过Npcf接口与该连接线连接，AF通过Naf与该连接线连接，SMF通过Nsmf与该连接线连接，该连接线还连接了hSEPP，且vSEPP和hSEPP通过N32接口连接，UPF通过N4接口与SMF连接，以及通过N6接口与DN连接。
请参考图5，为5G系统中的漫游场景的第三种架构图，图5也为LBO场景。图5中，VPLMN表示UE漫游之后所在的网络，HPLMN表示UE漫游之前所在的网络。图5中，VPLMN中的NSSF通过N22接口与AMF通信，AMF通过N1接口与UE通信、通过N2接口与(R)AN通信、通过N11接口与SMF通信、通过N15接口与vPCF通信、通过N12接口与HPLMN中的AUSF通信、以及通过N8接口与HPLMN中的UDM通信，SMF通过N4接口与UPF通信、通过N7接口与vPCF通信、以及通过N10接口与HPLMN中的UDM通信，vPCF通过N5接口与AF通信以及通过N24接口与HPLMN中的hPCF通信，UE能够与(R)AN通信，(R)AN通过N3接口与UPF通信，UPF通过N6接口与DN通信。
请参考图6，为5G系统中的漫游场景的第四种架构图，图6为归属路由(home routed，HR)场景。图6中，VPLMN表示UE漫游之后所在的网络，HPLMN表示UE漫游之前所在的网络。图6中，VPLMN中的V-NSSF通过N22接口与AMF通信，以及通过N31接口与HPLMN中的H-NSSF通信，AMF通过N1接口与UE通信、通过N2接口与(R)AN通信、通过N12接口与PLMN中的AUSF通信、通过N15接口与V-PCF通信、通过N11接口与V-SMF通信、以及通过N8接口与HPLMN中的UDM通信，V-SMF同N4接口与VPLMN中的UPF通信、通过N16 接口与HPLMN中的H-SMF通信，H-SMF通过N4接口与HPLMN中的UPF通信、通过N7接口与H-PCF通信以及通过N10接口与UDM通信，UDM通过N13接口与AUSF通信，H-PCF通过N24接口与V-PCF通信，以及通过N5接口与AF通信，UE能够与(R)AN通信，(R)AN通过N3接口与VPLMN中的UPF通信，VPLMN中的UPF通过N9接口与HPLMN中的UPF通信，HPLMN中的UPF还通过N6接口与DN通信。
应理解的是，(R)AN是指第三代合作伙伴计划(3rd Generation Partnership Project，3GPP)，例如LTE系统中的eNB，或NR系统中的gNB等。
如上的图1所示的场景～图6所示的场景中的任意一种场景，均可作为本申请实施例的应用场景。
其中，在某种网元之前加“V”或“v”，意义相同，都表明该网元是属于VPLMN中的，例如V-PCF或vPCF，就表示VPLMN中的PCF，而在某种网元之前加“H”或“h”，意义也相同，表明该网元是属于HPLMN中的，例如H-PCF或hPCF，就表示HPLMN中的PCF，也就是说，“V”或“H”仅是对所处的网络或所处的位置的说明，不代表对功能的限制。例如，V-PCF和H-PCF，功能可能是相同的，也可能不同。
如上介绍了本申请实施例的几种应用场景，当然以上几种场景只是示例，本申请实施例不限于应用在以上应用场景。
下面结合附图介绍本申请实施例所提供的技术方案。在下文的介绍过程中，均以本申请实施例所提供的技术方案应用在图1所示的应用场景、图2所示的应用场景、图3所示的应用场景、图4所示的应用场景、图5所示的应用场景或图6所示的应用场景为例。
请参见图7，本申请实施例提供第一种通信方法，该方法的流程介绍如下。
S71、终端装置发起PDU会话建立流程。
如图7所示，PDU会话建立流程由终端装置发起，经过RAN和AMF，到达SMF。在S71中，可以认为PDU会话建立完毕，例如将S71所建立的PDU会话称为第一PDU会话，那么，从S72开始的步骤，就是发生在第一PDU会话建立完毕之后的步骤。或者，也可以认为S71是PDU会话的建立过程，但PDU会话未建立完毕，那么S72～S75这几个步骤可以发生在PDU会话建立过程中，从S76开始的步骤，是发生在第一PDU会话建立完毕之后的步骤。
S72、第二网元向第一网元发送第一请求信息，则第一网元从第二网元接收第一请求信息，其中，第一请求信息用于请求获得第一URSP，或用于请求获得至少一个PDU会话的第一应用的信息。其中，第一应用的信息是根据第一URSP确定的，第一URSP可理解为网络侧的URSP，即AM-PCF中的URSP，第一URSP可以包括具体的一个URSP，也可以包括多个URSP。第一URSP规定了至少一个PDU会话的属性所对应的应用的信息，也就是规定了至少一个PDU会话的第一应用的信息。
本实施例中，第一URSP例如包括UE策略状态信息(UE policy status information)或策略部分标识(policy section identifier，PSI)列表，以及第一URSP对应的策略内容，二者中的至少一项。
在本实施例中，第二网元例如为SMF，或者为UPF。图7以SMF为例。另外，如果应用在漫游场景下，则SMF可以是VPLMN中的SMF。
例如，如果第二网元为SMF，则SMF可通过第三网元将第一请求信息转发给第一网元，第三网元例如为AMF，也就是说，SMF向第一网元发送第一请求信息，具体过程为， SMF向AMF发送第一请求信息，由AMF将第一请求信息转发给第一网元(如图8中，S72就通过两个箭头的步骤表示)，所以也可以认为是AMF直接向第一网元发送第一请求信息，则第一网元从SMF接收第一请求信息，具体是从AMF接收来自SMF的第一请求信息。或者，如果第二网元为UPF，则UPF可以通过SMF和第三网元将第一请求信息转发给第一网元，第三网元例如为AMF，也就是说，UPF向第一网元发送第一请求信息，具体过程为，UPF向SMF发送第一请求信息，SMF将第一请求信息转发给AMF，由AMF将第一请求信息转发给第一网元，所以也可以认为是AMF直接向第一网元发送第一请求信息，则第一网元从SMF接收第一请求信息，具体是从AMF接收来自UPF的第一请求信息。
第一网元例如为AM-PCF，因为URSP是由AM-PCF生成的，第一应用的信息也是根据第一URSP所确定的，可以由AM-PCF来确定，因此无论是请求URSP还是请求第一应用的信息，都可直接向AM-PCF请求。其中，如果第一请求信息用于请求获得第一应用的信息，则AM-PCF接收第一请求信息后，需要根据第一URSP来确定第一应用的信息。另外，如果本实施例应用在漫游场景下，则AM-PCF是指HPLMN中的AM-PCF。
S73、第一网元向第二网元发送第一URSP，则第二网元接收第一URSP或第一应用的信息，或，第一网元向第二网元发送第一应用的信息，则第二网元接收第一应用的信息。
其中，第一网元向第二网元发送的信息，可以通过第三网元转发给第二网元。例如，在第一请求信息用于请求获得第一URSP的情况下，第一网元向第三网元发送第一URSP，第三网元将第一URSP转发给第二网元，则第二网元接收第三网元转发的第一URSP，也就认为第二网元获得了第一URSP；或，在第一请求信息用于请求获得至少一个PDU会话的第一应用的信息的情况下，第一网元向第三网元发送第一URSP或第一应用的信息，第三网元如果接收的是第一URSP，则可以根据第一URSP得到第一应用的信息，再将第一应用的信息转发给第二网元，而如果第三网元接收的是第一应用的信息，则可以直接将第一应用的信息转发给第二网元，则第二网元接收第三网元转发的第一应用的信息，也就认为第二网元获得了第一应用的信息；或，在第一请求信息用于请求获得第一URSP或至少一个PDU会话的第一应用的信息的情况下，第一网元向第三网元发送第一URSP，第三网元根据第一URSP获得第一应用的信息，将第一应用的信息发送给第二网元，则第二网元接收第三网元发送的第一应用的信息，也就认为第二网元获得了第一应用的信息。
以第一网元是AM-PCF、第二网元是SMF、第三网元是AMF为例。
其中，第一URSP可以理解为包括AM-PCF中存储的所有的URSP。那么，如果第一请求信息用于请求第一URSP，则AM-PCF确定存储的所有的URSP，将第一URSP发送给AMF，发送给AMF的第一URSP可以包括AM-PCF中存储的所有的URSP，而AMF可能将第一URSP直接发送给SMF，也可能根据第一URSP获得至少一个PDU会话的第一应用的信息，将第一应用的信息发送给SMF；或，如果第一请求信息用于请求至少一个PDU会话的第一应用的信息，则第一请求信息所请求的可以是具有AM-PCF中存储的所有的URSP规定的属性的PDU会话的第一应用的信息，则AM-PCF根据AM-PCF中存储的所有的URSP确定具有这些URSP所规定的属性的PDU会话的第一应用的信息，并发送给AMF，通过AMF转发给SMF，则，AM-PCF发送给AMF的第一应用的信息可以包括具有AM-PCF中存储的所有的URSP规定的属性的PDU会话的第一应用的信息；或者，如果第一请求信息用于请求至少一个PDU会话的第一应用的信息，则第一请求信息所请 求的可以是具有AM-PCF中存储的所有的URSP规定的属性的PDU会话的第一应用的信息，则AM-PCF确定存储的所有的URSP，将第一URSP发送给AMF，发送给AMF的第一URSP可以包括AM-PCF中存储的所有的URSP，而AMF可根据第一URSP获得至少一个PDU会话的第一应用的信息，将第一应用的信息发送给SMF。其中，如果第一URSP理解为包括AM-PCF中存储的所有的URSP，也就是说，第一请求信息所请求的是全部的URSP或者请求的是具有AM-PCF中存储的所有的URSP规定的属性的PDU会话的第一应用的信息，则第一请求信息无需携带URSP的属性信息或PDU会话的身份标识号(PDU session ID)等信息。
或者，第一URSP可以理解为包括AM-PCF中存储的部分URSP，或者理解为，第一URSP包括AM-PCF中存储的与特定的PDU会话相关的URSP。那么，如果第一请求信息用于请求第一URSP，则第一请求信息所请求的可以是特定的URSP，则第一请求信息可以携带URSP的属性信息，从而AM-PCF可以将第一URSP发送给AMF，此时第一URSP包括符合第一请求信息所携带的属性信息的URSP，而AMF可能将第一URSP直接发送给SMF，也可能根据第一URSP获得至少一个PDU会话的第一应用的信息，将第一应用的信息发送给SMF；或，如果第一请求信息用于请求至少一个PDU会话的第一应用的信息，而至少一个PDU会话是特定的PDU会话，特定的PDU会话例如为第一PDU会话，则第一请求信息可以携带第一PDU会话的身份标识号(ID)，可选的，还可以携带第一PDU会话的属性信息，则AM-PCF根据第一请求信息携带的属性信息确定URSP，例如第一URSP，根据该第一URSP确定第一PDU会话的第一应用的信息，从而AM-PCF将第一PDU会话的第一应用的信息发送给AMF，AMF再将第一PDU会话的第一应用的信息发送给SMF；或，如果第一请求信息用于请求第一PDU会话的第一应用的信息，则第一请求信息可以携带第一PDU会话的ID，可选的，还可以携带第一PDU会话的属性信息，则AM-PCF根据第一请求信息携带的属性信息确定URSP，例如第一URSP，AM-PCF可以将第一URSP发送给AMF，AMF可以根据第一URSP获得第一PDU会话的第一应用的信息，将第一应用的信息发送给SMF。
其中，AM-PCF向SMF发送信息，例如发送第一URSP或第一应用的信息，都是通过AMF转发，因此如图7中，S73通过两个箭头的步骤表示。
其中，第一应用的信息可以包括应用(application)ID或application过滤器(filter)等信息。
另外，第一网元发送的信息都要通过AMF转发给SMF，与一个AMF通信的SMF可能有多个，则AMF可以将第一网元所发送的信息转发给向AMF发送所述第一请求的SMF，例如，第一请求携带了PDU Session ID，则AMF根据PDU Session ID来确定将第一网元所发送的信息发送给哪个SMF。
S74、SMF在UPF上设置应用检测触发器，或称为应用检测上报触发器。
也就是说，SMF指示UPF检测应用，例如，指示UPF确定至少一个PDU会话所涉及的应用，例如UPF可以通过检测确定至少一个PDU会话所涉及的应用。其中，至少一个PDU会话所涉及的应用，也就是终端装置在进行至少一个PDU会话时实际涉及的应用，或者理解为，是至少一个PDU会话中的数据包所属的应用。本文将PDU会话中的数据包所属的应用的信息称为PDU会话的第二应用的信息，那么，SMF是指示UPF确定至少一个PDU会话的第二应用的信息。
另外，SMF在UPF上设置应用检测触发器，也可以理解为，SMF向UPF发送第三请求信息，所述第三请求信息用于指示UPF确定至少一个PDU会话中的数据包所属的应用的信息，也就是指示UPF确定至少一个PDU会话实际涉及的应用的信息。那么，UPF就可以通过检测确定至少一个PDU会话中的数据包所属的应用的信息。例如，SMF将至少一个PDU会话的第一应用的信息发送给UPF，则UPF通过检测确定终端装置在进行至少一个PDU会话时所涉及的应用的信息。如果UPF检测到终端装置在进行至少一个PDU会话时所涉及的应用中，包括了SMF未发送给UPF的应用，那么这些应用就是UPF无法识别的应用。其中，如果SMF获得的是第一URSP，则SMF可以根据第一URSP确定至少一个PDU会话的第一应用的信息。例如，UPF检测到终端装置在进行至少一个PDU会话时涉及了应用A和应用B，其中，应用A的信息包括在至少一个PDU会话的第一应用的信息内，应用B的信息未包括在至少一个PDU会话的第一应用的信息内，则应用A就是UPF能够识别的应用，应用B就是UPF无法识别的应用。
S75、UPF将至少一个PDU会话的第二应用的信息发送给SMF，则SMF接收至少一个PDU会话的第二应用的信息。
无论是UPF能够识别的应用还是UPF无法识别的应用，只要是终端装置在进行至少一个PDU会话时所涉及的应用的信息，UPF都可以发送给SMF。
其中，如果S72～S75都发生在PDU会话建立过程中，则S74可以通过PDU会话建立过程中的SMF发送给UPF的N4会话建立/修改请求(N4 session establishment/modification request)实现，S75可以通过PDU会话建立过程中的UPF发送给SMF的N4会话建立/修改响应(N4 session establishment/modification response)实现。当然这里只是举例，具体的实现方式不限于此。
S76、SMF确定至少一个PDU会话的第二应用的信息和至少一个PDU会话的第一应用的信息是否匹配。
SMF获得了第一应用的信息和第二应用的信息，可以对比二者是否匹配。其中，第一应用的信息中可能包括多个应用的信息，第二应用的信息中也可能包括多个应用的信息，第一应用的信息与第二应用的信息相匹配，可举例为，第一应用的信息包括的应用的信息的数量大于或等于第二应用的信息包括的应用的信息的数量，且第二应用的信息包括的应用的信息是第一应用的信息包括的应用的信息的子集。例如，第二应用的信息包括应用A的信息，而应用A的信息未包括在第一应用的信息内，则表明第一应用的信息和第二应用的信息不匹配。
或者，考虑到第一应用的信息所包括的不同的应用的信息，其类型可以相同，例如都是应用的ID，或者其类型也可以不同，例如某些应用的信息是应用的ID，而另外一些应用的信息是应用的过滤器(filter)，对于第二应用的信息所包括的不同的应用的信息来说也是同样。因此，如果直接比较应用的信息，可能因为应用的信息的类型不同而出现比较结果不够准确的情况。例如，第一应用的信息对应的应用包括应用A，第二应用的信息对应的应用也包括应用A，但是第一应用的信息包括的应用A的信息的类型是应用A的ID，而第二应用的信息包括的应用A的信息的类型是应用A的filter，那么比对结果可能会表明二者不一致，从而可能误判定为第一应用的信息与第二应用的信息不匹配。
鉴于此，确定第一应用的信息和第二应用的信息是否匹配，也可以通过确定第一应用的信息所对应的应用和第二应用的信息所对应的应用是否匹配来实现。其中，第一应用的 信息中可能包括多个应用的信息，也就是第一应用的信息可能对应多个应用，第二应用的信息中也可能包括多个应用的信息，也就是第二应用的信息也可能对应多个应用，第一应用的信息对应的应用与第二应用的信息对应的应用相匹配，可举例为，第一应用的信息包括的应用的信息所对应的应用的数量大于或等于第二应用的信息包括的应用的信息所对应的应用的数量，且第二应用的信息包括的应用的信息所对应的应用是第一应用的信息包括的应用的信息所对应的应用的子集。例如，第二应用的信息包括应用A的信息，即，第二应用的信息所对应的应用包括应用A，而应用A的信息未包括在第一应用的信息内，也就是，第一应用的信息所对应的应用不包括应用A，这就表明第一应用的信息对应的应用和第二应用的信息所对应的应用不匹配，也就是表明第一应用的信息和第二应用的信息不匹配。
可以看到，如果第一应用的信息包括的应用的信息的类型和第二应用的信息包括的应用的类型均一致，例如，第一应用的信息包括的应用的信息和第二应用的信息包括的应用的信息都是同一种类型，那么可以采用如上的任意一种方式来进行比对，也就是说，既可以比对应用的信息，也可以比对应用的信息对应的应用，而如果第一应用的信息包括的应用的信息的类型和第二应用的信息包括的应用的类型中有不一致的，例如，第一应用的信息包括的应用的信息和第二应用的信息包括的应用的信息对应的类型的数量大于或等于2，那么优选的，可以采用如上的第二种比对方式，即，通过比对应用的信息对应的应用是否一致来确定应用的信息是否一致。
其中，S74～S76所示的验证URSP的过程只是一种示例，在实际应用中，SMF也可以通过其他方式来验证终端装置使用的URSP是否与网络侧的URSP是否匹配。
S77、SMF在确定至少一个PDU会话的第二应用的信息和至少一个PDU会话的第一应用的信息是不匹配的情况下，向第一网元发送第二请求信息，则第一网元接收所述第二请求信息，所述第二请求信息用于请求第一网元下发第一URSP。
以第一网元是AM-PCF为例，则本实施例中，SMF是将第二请求信息发送给第三网元，例如AMF，由AMF转发给AM-PCF，那么AM-PCF是从AMF接收来自SMF的第二请求信息。
本实施例是以SMF验证终端装置的URSP是否有误为例，或者，也可以由UPF来执行该验证过程。例如，SMF将至少一个PDU会话的第一应用的信息发送给UPF，则UPF通过检测确定终端装置在进行至少一个PDU会话时所涉及的应用的信息，即确定至少一个PDU会话的第二应用的信息。那么，UPF可以直接对比至少一个PDU会话的第一应用的信息和至少一个PDU会话的第二应用的信息，比对方式与SMF的比对方式一致。如果UPF确定至少一个PDU会话的第二应用的信息和至少一个PDU会话的第一应用的信息不一致，则可以向AM-PCF发送第二请求信息，则AM-PCF接收第二请求信息，其中，UPF是将第二请求信息发送给SMF，SMF将第二请求信息转发给AMF，AMF再将第二请求信息转发给AM-PCF，所以AM-PCF是从AMF接收来自UPF的第二请求信息，第二请求信息用于请求AM-PCF下发第一URSP。本实施例对于究竟由哪个网元来验证第一应用的信息和第二应用的信息是否一致不作限制。
S78、AM-PCF重新下发第一URSP，则终端装置接收第一URSP。例如，AM-PCF将第一URSP发送给AMF，通过AMF转发给终端装置，如图7中S78的两个箭头所示。
终端装置接收第一URSP后，如果需要根据第一URSP修改S71中发起建立的PDU会话的参数，则可以发起PDU会话修改流程，如果需要根据第一URSP重新建立PDU会话，则可以发起PDU会话建立流程。另外，如果需要释放S71中发起建立的PDU会话，则可以发起PDU会话释放流程。关于PDU会话建立流程、PDU会话修改流程以及PDU会话释放流程等，均可参考现有的标准流程，不多赘述。
可以看到，在本申请实施例中，AMF可以从AM-PCF中获得第一URSP，或者获得至少一个PDU会话的第一应用的信息，从而SMF或UPF就能够验证终端装置使用的URSP是否正确，如果终端装置使用的URSP有误，则可以请求AM-PCF重新向终端装置下发正确的URSP，使得终端装置使用的URSP与网络侧的URSP一致，保证PDU会话的正常进行。
为了解决同样的问题，下面请参见图8，本申请实施例提供第二种通信方法，该方法的流程介绍如下。
S81、终端装置发送PDU会话建立请求。表明终端装置发起了PDU会话建立流程。
其中，终端装置是通过(R)AN向AMF发送PDU会话建立请求，则AMF接收PDU会话建立请求，之后AMF再向SMF发送SM上下文建立请求，则SMF接收SM上下文建立请求，如图8中的S81a所示。其中，在SM上下文建立请求中，可携带AM-PCF的ID，以供SMF确定AM-PCF。当然，在非漫游场景或漫游场景的HR场景下，如果第一网元通过UDR实现，则在SM上下文建立请求中，可无需携带AM-PCF的ID。
S82、第二网元向第一网元发送第一请求信息，则第一网元从第二网元接收第一请求信息，其中，第一请求信息用于请求获得第一URSP，或用于请求获得至少一个PDU会话的第一应用的信息。其中，第一应用的信息是根据第一URSP确定的，第一URSP可理解为网络侧的URSP，即AM-PCF中的URSP，第一URSP可以包括具体的一个URSP，也可以包括多个URSP。第一URSP规定了至少一个PDU会话的属性所对应的应用的信息，也就是规定了至少一个PDU会话的第一应用的信息。关于第一URSP所包括的内容，可参考图7所示的实施例中的相关介绍。
第二网元例如为SMF，或者为UPF，图8以SMF为例。另外，如果应用在漫游场景下，则SMF可以是VPLMN中的SMF。
例如，如果第二网元为SMF，则SMF可通过第三网元将第一请求信息转发给第一网元，第三网元例如为SM-PCF或NEF，也就是说，SMF向第一网元发送第一请求信息，具体过程为，SMF向SM-PCF或NEF发送第一请求信息，由SM-PCF或NEF将第一请求信息转发给第一网元，如图8中S82的两个箭头所示，所以也可以认为是SM-PCF或NEF直接向第一网元发送第一请求信息，则第一网元从SM-PCF或NEF接收第一请求信息，具体是从SM-PCF或NEF接收来自SMF的第一请求信息。或者，如果第二网元为UPF，则UPF可以通过SMF和第三网元将第一请求信息转发给第一网元，第三网元例如为SM-PCF或NEF，也就是说，UPF向第一网元发送第一请求信息，具体过程为，UPF向SMF发送第一请求信息，SMF将第一请求信息转发给SM-PCF或NEF，由SM-PCF或NEF将第一请求信息转发给第一网元，所以也可以认为是SM-PCF或NEF直接向第一网元发送第一请求信息，则第一网元从SMF接收第一请求信息，具体是从SM-PCF或NEF接收来自UPF的第一请求信息。
第一网元例如为AM-PCF或UDR。另外，如果应用在漫游场景下，则作为第一网元的AM-PCF是指HPLMN中的AM-PCF。图8中，第一网元以UDR为例。
其中，如果第三网元为SM-PCF，第一网元为AM-PCF，那么需要在SM-PCF和AM-PCF之间新增通信接口，以使得SM-PCF和AM-PCF能够直接通信。
S83、第一网元向第二网元发送第一URSP，则第二网元接收第一URSP或第一应用的信息，或，第一网元向第二网元发送第一应用的信息，则第二网元接收第一应用的信息。
其中，第一网元向第二网元发送的信息，可以通过第三网元转发给第二网元。例如，在第一请求信息用于请求获得第一URSP的情况下，第一网元向第三网元发送第一URSP，第三网元将第一URSP转发给第二网元，则第二网元接收第三网元转发的第一URSP，也就认为第二网元获得了第一URSP；或，在第一请求信息用于请求获得至少一个PDU会话的第一应用的信息的情况下，第一网元向第三网元发送第一URSP或第一应用的信息，第三网元如果接收的是第一URSP，则可以根据第一URSP得到第一应用的信息，再将第一应用的信息转发给第二网元，而如果第三网元接收的是第一应用的信息，则可以直接将第一应用的信息转发给第二网元，则第二网元接收第三网元转发的第一应用的信息，也就认为第二网元获得了第一应用的信息；或，在第一请求信息用于请求获得第一URSP或至少一个PDU会话的第一应用的信息的情况下，第一网元向第三网元发送第一URSP，第三网元根据第一URSP获得第一应用的信息，将第一应用的信息发送给第二网元，则第二网元接收第三网元发送的第一应用的信息，也就认为第二网元获得了第一应用的信息。
其中，第一URSP可以理解为包括AM-PCF中存储的所有的URSP，或者，第一URSP也可以理解为第一URSP包括AM-PCF中存储的与特定的PDU会话相关的URSP，关于这部分的相关内容可参考图7所示的实施例中对于S73的介绍。
其中，第一网元发送的信息都要通过SM-PCF或NEF转发给SMF，例如第一网元为UDR，第二网元为SMF，则UDR向SMF发送第一URSP或第一应用的信息，具体可以是，UDR将第一URSP或第一应用的信息发送给SM-PCF或NEF，由SM-PCF转发给SMF，如图8中S83的两个箭头所示。
与一个AMF通信的SMF可能有多个，则AMF可以将第一网元所发送的信息转发给向AMF发送所述第一请求的SMF，例如，第一请求携带了PDU Session ID，则AMF根据PDU Session ID来确定将第一网元所发送的信息发送给哪个SMF。
其中，SM-PCF向SMF发送第一应用的信息时，可以通过专门的信息发送，或者也可以携带在目前已有的信息中发送。例如，现有技术中的授权过程中，SM-PCF可以认定某个PDU会话可以使用的服务质量(quality of service，QoS)属性等，并生成策略规则，SM-PCF会向SMF发送该策略规则，那么本申请实施例可以选择将第一应用的信息携带在PDU会话相关策略信息(PDU session related policy information)中，发送给SMF。当然SM-PCF也可以通过其他的已有信息向SMF发送第一应用的信息，具体的不作限制。
S84、SMF在UPF上设置应用检测触发器，或称为应用检测上报触发器。
S85、UPF将至少一个PDU会话的第二应用的信息发送给SMF，则SMF接收至少一个PDU会话的第二应用的信息。
S86、SMF确定至少一个PDU会话的第二应用的信息和至少一个PDU会话的第一应用的信息是否匹配。
关于S84～S86，可参考图7所示的实施例中对于S74～S76的介绍。
S87、SMF在确定至少一个PDU会话的第二应用的信息和至少一个PDU会话的第一应用的信息是不匹配的情况下，向第一网元发送第二请求信息，则第一网元接收所述第二请求信息，所述第二请求信息用于请求第一网元下发第一URSP。
以第一网元是UDR为例，则本实施例中，SMF是将第二请求信息发送给第三网元，例如SM-PCF或NEF，由SM-PCF或NEF转发给UDR，那么UDR是从SM-PCF或NEF接收来自SMF的第二请求信息，如图8中S87的两个箭头所示。
本实施例是以SMF验证终端装置的URSP是否有误为例，与图7所示的实施例中对于S77的介绍类似的，本实施例中也可以由UPF来执行该验证过程，不多赘述。
S88、AM-PCF重新下发第一URSP，则终端装置接收第一URSP。例如，AM-PCF将第一URSP发送给AMF，通过AMF转发给终端装置，如图8中S88的两个箭头所示。
终端装置接收新的URSP后，如果S81中发起的PDU会话已建立完毕，且终端装置需要根据第一URSP修改该PDU会话的参数，则可以发起PDU会话修改流程，如果需要根据第一URSP重新建立PDU会话，则可以发起PDU会话建立流程。另外，如果S81中发起的PDU会话已建立完毕，且终端装置需要释放该PDU会话，则可以发起PDU会话释放流程。关于PDU会话建立流程、PDU会话修改流程以及PDU会话释放流程等，均可参考现有的标准流程，不多赘述。
可以看到，在本申请实施例中，SM-PCF或NEF可以从AM-PCF或UDR中获得第一URSP，或者获得至少一个PDU会话的第一应用的信息，从而SMF或UPF就能够验证终端装置使用的URSP是否正确，如果终端装置使用的URSP有误，则可以请求AM-PCF或UDR重新向终端装置下发正确的URSP，使得终端装置使用的URSP与网络侧的URSP一致，保证PDU会话的正常进行。
本实施例中，第一URSP例如包括UE policy status information或PSI列表，以及第一URSP对应的策略内容，二者中的至少一项。
为了解决同样的问题，下面请参见图9，本申请实施例提供第三种通信方法，该方法的流程介绍如下。
S91、在终端装置的注册流程中，第三网元向第一网元发送第一请求信息，则第一网元从第二网元接收第一请求信息，其中，第一请求信息用于请求获得第一URSP，或用于请求获得至少一个PDU会话的第一应用的信息。其中，第一应用的信息是根据第一URSP确定的，第一URSP可理解为网络侧的URSP，即AM-PCF中的URSP，第一URSP可以包括具体的一个URSP，也可以包括多个URSP。第一URSP规定了至少一个PDU会话的属性所对应的应用的信息，也就是规定了至少一个PDU会话的第一应用的信息。
在LBO场景下，VPLMN中的SM-PCF无法与HPLMN中的UDR连接，而UDM位于HPLMN，能够与HPLMN中的UDR通信，则UDM可以从UDR中获得第一URSP或至少一个PDU会话的第一应用的信息，因此在第一网元是UDR的情况下，UDM也能实现如图8所示的实施例中的SM-PCF的相应功能，那么在本实施例中，第三网元例如为UDM，第一网元例如为UDR。
S92、UDR向UDM发送第一URSP，则UDM接收第一URSP，或，UDR向UDM发送第一应用的信息，则UDM接收第一应用的信息。
其中，在第一请求信息用于请求获得第一URSP的情况下，UDR向UDM发送第一URSP，则UDM接收第一URSP，也就认为UDM获得了第一URSP，或，在第一请求信 息用于请求获得至少一个PDU会话的第一应用的信息的情况下，UDR向UDM发送第一应用的信息，则UDM接收第一应用的信息，也就认为UDM获得了第一应用的信息。
例如，在终端装置的注册流程中，AMF和PCF之间会进行注册过程中的策略联合建立(policy association establishment during registeration)过程，在该过程执行完毕后，即可执行S91和S92。
S93、UDM将第一URSP或第一应用的信息发送给第二网元，则第二网元接收第一URSP或第一应用的信息。
例如，第二网元为SMF或UPF，图9以第二网元是SMF为例。另外，如果应用在漫游场景下，则SMF可以是VPLMN中的SMF。
其中，如果在S92中UDM从UDR接收的是第一URSP，则UDM可以直接将第一URSP发送给第二网元，或者，UDM也可以根据第一URSP获得第一应用的信息，再将第一应用的信息发送给第二网元。如果在在S92中UDM从UDR接收的是第一应用的信息，则UDM可以直接将第一应用的信息发送给第二网元。
其中，UDM可以在终端装置发起的PDU会话建立过程中将第一URSP或第一应用的信息发送给SMF，则可以认为，在S93之前终端装置发起了PDU会话建立过程，如图9所示。例如，UDM通过PDU会话建立过程中的签约/订阅/恢复升级订阅(registeration/subscription retrieval/subscription for updates)信息将第一URSP或第一应用的信息发送给SMF。
S94、SMF在UPF上设置应用检测触发器，或称为应用检测上报触发器。
S95、UPF将至少一个PDU会话的第二应用的信息发送给SMF，则SMF接收至少一个PDU会话的第二应用的信息。
S96、SMF确定至少一个PDU会话的第二应用的信息和至少一个PDU会话的第一应用的信息是否匹配。
其中，如果S93中UDM是将第一URSP发给SMF，则SMF可以根据第一URSP获得至少一个PDU会话的第一应用的信息。
关于S94～S96，可参考图7所示的实施例中对于S74～S76的介绍。
S97、SMF在确定至少一个PDU会话的第二应用的信息和至少一个PDU会话的第一应用的信息是不匹配的情况下，向UDR发送第二请求信息，则UDR接收所述第二请求信息，所述第二请求信息用于请求UDR下发第一URSP。
本实施例是以SMF验证终端装置的URSP是否有误为例，与图7所示的实施例中对于S77的介绍类似的，本实施例中也可以由UPF来执行该验证过程，不多赘述。
其中，SMF是通过UDM将第二请求信息发送给UDR，例如，SMF向UDM发送第二请求信息，UDM将第二请求信息转发给UDR，则UDR是从UDM接收来自SMF的第二请求信息，如图9中S97的两个箭头所示。
S98、UDR重新下发第一URSP，则终端装置接收第一URSP。例如，UDR将第一URSP发送给UDM，UDM将第一URSP转发给AMF，通过AMF再转发给终端装置，如图9中S98的几个箭头所示。
终端装置接收新的URSP后，如果S93之前发起的PDU会话已建立完毕，且终端装置需要根据第一URSP修改该PDU会话的参数，则可以发起PDU会话修改流程，如果需要根据第一URSP重新建立PDU会话，则可以发起PDU会话建立流程。另外，如果S93 之前发起的PDU会话已建立完毕，且终端装置需要释放该PDU会话，则可以发起PDU会话释放流程。关于PDU会话建立流程、PDU会话修改流程以及PDU会话释放流程等，均可参考现有的标准流程，不多赘述。
可以看到，在本申请实施例中，UDM可以从UDR中获得第一URSP，或者获得至少一个PDU会话的第一应用的信息，从而SMF或UPF就能够验证终端装置使用的URSP是否正确，如果终端装置使用的URSP有误，则可以请求AM-PCF或UDR重新向终端装置下发正确的URSP，使得终端装置使用的URSP与网络侧的URSP一致，保证PDU会话的正常进行。
本实施例中，第一URSP例如包括UE policy status information或PSI列表，以及第一URSP对应的策略内容，二者中的至少一项。
下面结合附图介绍本申请实施例提供的装置。
图10示出了一种通信装置1000的结构示意图。该通信装置1000可以实现上文中涉及的第三网元的功能。该通信装置1000可以是上文中所述的第三网元，或者可以是设置在上文中所述的第三网元中的芯片，第三网元例如为AMF、SM-PCF、NEF或UDM。该通信装置1000可以包括处理器1001和收发器1002。其中，处理器1001可以用于执行图7所示的实施例中的S73(例如，在第一请求信息用于请求获得URSP或至少一个PDU会话的第一应用的信息的情况下，第一网元向通信装置1000发送第一URSP，处理器1001根据第一URSP获得第一应用的信息)，和/或用于支持本文所描述的技术的其它过程。收发器1002可以用于执行图7所示的实施例中的S72，和/或用于支持本文所描述的技术的其它过程。或者，处理器1001可以用于执行图8所示的实施例中的S83(例如，在第一请求信息用于请求获得URSP或至少一个PDU会话的第一应用的信息的情况下，第一网元向通信装置1000发送第一URSP，处理器1001根据第一URSP获得第一应用的信息)，和/或用于支持本文所描述的技术的其它过程。收发器1002可以用于执行图8所示的实施例中的S82，和/或用于支持本文所描述的技术的其它过程。或者，处理器1001可以用于执行图9所示的实施例中的S93(例如，UDM从UDR接收的是第一URSP，则处理器1001可以根据第一URSP获得第一应用的信息)，和/或用于支持本文所描述的技术的其它过程。收发器1002可以用于执行图9所示的实施例中的S91、S92和S93，和/或用于支持本文所描述的技术的其它过程。
例如，处理器1001，用于获得至少一个PDU会话的第一应用的信息，所述第一应用的信息根据第一URSP所确定；
收发器1002，用于将所述第一应用的信息发送给第二网元，所述第一应用的信息用于验证所述至少一个PDU会话的第二应用的信息和所述第一应用的信息是否匹配，所述第二应用的信息为所述至少一个PDU会话中的数据包所属的应用的信息。
其中，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。
图11示出了一种通信装置1100的结构示意图。该通信装置1100可以实现上文中涉及的第二网元的功能。该通信装置1100可以是上文中所述的第二网元，或者可以是设置在上文中所述的第二网元中的芯片，第二网元例如为SMF或UPF。该通信装置1100可以包括处理器1101和收发器1102。其中，处理器1101可以用于执行图7所示的实施例中的S76，和/或用于支持本文所描述的技术的其它过程。收发器1102可以用于执行图7所示的实施例中的S72、S73、S74(例如，收发器1102向UPF发送第三请求信息，所述第三请求信 息用于指示UPF确定至少一个PDU会话中的数据包所属的应用的信息)、S75和S77，和/或用于支持本文所描述的技术的其它过程。或者，处理器1101可以用于执行图8所示的实施例中的S86，和/或用于支持本文所描述的技术的其它过程。收发器1102可以用于执行图8所示的实施例中的S82、S83、S84(例如，收发器1002向UPF发送第三请求信息，所述第三请求信息用于指示UPF确定至少一个PDU会话中的数据包所属的应用的信息)、S85和S87，和/或用于支持本文所描述的技术的其它过程。或者，处理器1101可以用于执行图9所示的实施例中的S96，和/或用于支持本文所描述的技术的其它过程。收发器1102可以用于执行图9所示的实施例中的S93、S94(例如，收发器1102向UPF发送第三请求信息，所述第三请求信息用于指示UPF确定至少一个PDU会话中的数据包所属的应用的信息)、S95和S97，和/或用于支持本文所描述的技术的其它过程。
例如，收发器1102，用于接收至少一个PDU会话的第一应用的信息，其中，所述第一应用的信息根据第一URSP所确定；
处理器1101，用于确定所述至少一个PDU会话的第二应用的信息和所述第一应用的信息是否匹配，所述第二应用的信息为所述至少一个PDU会话中的数据包所属的应用的信息；
收发器1102，还用于在处理器1101确定所述第二应用的信息和所述第一应用的信息不匹配的情况下，向第一网元发送第二请求信息，所述第二请求信息用于请求所述第一网元下发所述第一URSP。
其中，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。
图12示出了一种通信装置1200的结构示意图。该通信装置1200可以实现上文中涉及的第一网元的功能。该通信装置1200可以是上文中所述的第一网元，或者可以是设置在上文中所述的第一网元中的芯片，第二网元例如为AM-PCF或UDR。该通信装置1200可以包括处理器1201和收发器1202。其中，处理器1201可以用于执行图7所示的实施例中根据第一请求信息获得第一URSP或第一应用的信息的步骤、根据第二请求信息确定下发第一URSP的步骤，和/或用于支持本文所描述的技术的其它过程。收发器1002可以用于执行图7所示的实施例中的S72、S73、S77和S78，和/或用于支持本文所描述的技术的其它过程。或者，处理器1201可以用于执行图8所示的实施例中根据第一请求信息获得第一URSP或第一应用的信息的步骤、根据第二请求信息确定下发第一URSP的步骤，和/或用于支持本文所描述的技术的其它过程。收发器1002可以用于执行图8所示的实施例中的S82、S83、S87和S88，和/或用于支持本文所描述的技术的其它过程。或者，处理器1001可以用于执行图9所示的实施例中根据第一请求信息获得第一URSP或第一应用的信息的步骤、根据第二请求信息确定下发第一URSP的步骤，和/或用于支持本文所描述的技术的其它过程。收发器1002可以用于执行图9所示的实施例中的S91、S92、S97和S98，和/或用于支持本文所描述的技术的其它过程。
例如，收发器1202，用于接收第三网元发送的第一请求信息，所述第一请求信息用于请求获得第一URSP，或用于请求获得至少一个PDU会话的第一应用的信息，其中，所述第一应用的信息根据第一URSP所确定；
收发器1202，还用于在处理器1201确定所述第一请求信息用于请求获得第一URSP的情况下，向所述第三网元发送第一URSP；或，在处理器1201确定所述第一请求信息用 于请求获得所述第一应用的信息的情况下，向所述第三网元发送所述第一应用的信息。
其中，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。
在一个简单的实施例中，本领域的技术人员可以想到，还可以将通信装置1000、通信装置1100或通信装置1200通过如图13A所示的通信装置1300的结构实现。该通信装置1300可以实现上文中涉及的第一网元、第二网元或第三网元的功能。该通信装置1300可以包括处理器1301。
其中，在该通信装置1300用于实现上文中涉及的第三网元的功能时，处理器1301可以用于执行图7所示的实施例中的S73(例如，在第一请求信息用于请求获得URSP或至少一个PDU会话的第一应用的信息的情况下，第一网元向通信装置1000发送第一URSP，处理器1001根据第一URSP获得第一应用的信息)，和/或用于支持本文所描述的技术的其它过程；或者，在该通信装置1300用于实现上文中涉及的第三网元的功能时，处理器1301可以用于执行图8所示的实施例中的S83(例如，在第一请求信息用于请求获得URSP或至少一个PDU会话的第一应用的信息的情况下，第一网元向通信装置1000发送第一URSP，处理器1001根据第一URSP获得第一应用的信息)，和/或用于支持本文所描述的技术的其它过程；或者，在该通信装置1300用于实现上文中涉及的第三网元的功能时，处理器1301可以用于执行图9所示的实施例中的S93(例如，UDM从UDR接收的是第一URSP，则处理器1001可以根据第一URSP获得第一应用的信息)，和/或用于支持本文所描述的技术的其它过程。
在该通信装置1300用于实现上文中涉及的第二网元的功能时，处理器1301可以用于执行图7所示的实施例中的S76，和/或用于支持本文所描述的技术的其它过程；或者，在该通信装置1300用于实现上文中涉及的第二网元的功能时，处理器1301可以用于执行图8所示的实施例中的S86，和/或用于支持本文所描述的技术的其它过程；或者，在该通信装置1300用于实现上文中涉及的第二网元的功能时，处理器1301可以用于执行图9所示的实施例中的S96，和/或用于支持本文所描述的技术的其它过程。
在该通信装置1300用于实现上文中涉及的第一网元的功能时，处理器1301可以用于执行图7所示的实施例、图8所示的实施例或图9所示的实施例中，根据第一请求信息获得第一URSP或第一应用的信息的步骤、根据第二请求信息确定下发第一URSP的步骤，和/或用于支持本文所描述的技术的其它过程。
其中，通信装置1300可以通过现场可编程门阵列(field-programmable gate array，FPGA)，专用集成芯片(application specific integrated circuit，ASIC)，系统芯片(system on chip，SoC)，中央处理器(central processor unit，CPU)，网络处理器(network processor，NP)，数字信号处理电路(digital signal processor，DSP)，微控制器(micro controller unit，MCU)，还可以是可编程控制器(programmable logic device，PLD)或其他集成芯片实现，则通信装置1300可被设置于本申请实施例的第一网元、第二网元或第三网元中，以使得该第一网元、第二网元或第三网元实现本申请实施例提供的方法。
在一种可选实现方式中，该通信装置1300可以包括收发组件，用于与其他设备进行通信。
其中，在该通信装置1300用于实现上文中涉及的第三网元的功能时，收发组件可以用于执行图7所示的实施例中的S72，和/或用于支持本文所描述的技术的其它过程；或者， 在该通信装置1300用于实现上文中涉及的第三网元的功能时，收发组件可以用于执行图8所示的实施例中的S82，和/或用于支持本文所描述的技术的其它过程；或者，在该通信装置1300用于实现上文中涉及的第三网元的功能时，收发组件可以用于执行图9所示的实施例中的S91、S92和S93，和/或用于支持本文所描述的技术的其它过程。
在该通信装置1300用于实现上文中涉及的第二网元的功能时，收发组件可以用于执行图7所示的实施例中的S72、S73、S74(例如，收发组件向UPF发送第三请求信息，所述第三请求信息用于指示UPF确定至少一个PDU会话中的数据包所属的应用的信息)、S75和S77，和/或用于支持本文所描述的技术的其它过程；或者，在该通信装置1300用于实现上文中涉及的第二网元的功能时，收发组件可以用于执行图8所示的实施例中的S82、S83、S84(例如，收发组件向UPF发送第三请求信息，所述第三请求信息用于指示UPF确定至少一个PDU会话中的数据包所属的应用的信息)、S85和S87，和/或用于支持本文所描述的技术的其它过程；或者，在该通信装置1300用于实现上文中涉及的第二网元的功能时，收发组件可以用于执行图9所示的实施例中的93、S94(例如，收发组件向UPF发送第三请求信息，所述第三请求信息用于指示UPF确定至少一个PDU会话中的数据包所属的应用的信息)、S95和S97，和/或用于支持本文所描述的技术的其它过程。
在该通信装置1300用于实现上文中涉及的第一网元的功能时，收发组件可以用于执行图7所示的实施例中的S72、S73、S77和S78，和/或用于支持本文所描述的技术的其它过程；或者，在该通信装置1300用于实现上文中涉及的第一网元的功能时，收发组件可以用于执行图8所示的实施例中的S82、S83、S87和S88，和/或用于支持本文所描述的技术的其它过程；或者，在该通信装置1300用于实现上文中涉及的第一网元的功能时，收发组件可以用于执行图9所示的实施例中的S91、S92、S97和S98，和/或用于支持本文所描述的技术的其它过程。
在一种可选实现方式中，该通信装置1300还可以包括存储器1302，可参考图13B，其中，存储器1302用于存储计算机程序或指令，处理器1301用于译码和执行这些计算机程序或指令。应理解，这些计算机程序或指令可包括上述第一网元、第二网元或第三网元的功能程序。当第一网元的功能程序被处理器1001译码并执行时，可使得第一网元实现本申请实施例图7所示的实施例、图8所示的实施例或图9所示的实施例所提供的方法中第一网元的功能。当第二网元的功能程序被处理器1001译码并执行时，可使得第二网元实现本申请实施例图7所示的实施例、图8所示的实施例或图9所示的实施例所提供的方法中第二网元的功能。当第三网元的功能程序被处理器1001译码并执行时，可使得第三网元实现本申请实施例图7所示的实施例、图8所示的实施例或图9所示的实施例所提供的方法中第三网元的功能。
在另一种可选实现方式中，这些第一网元、第二网元或第三网元的功能程序存储在通信装置1300外部的存储器中。当第一网元的功能程序被处理器1301译码并执行时，存储器1302中临时存放上述第一网元的功能程序的部分或全部内容。当第二网元的功能程序被处理器1301译码并执行时，存储器1302中临时存放上述第二网元的功能程序的部分或全部内容。当第三网元的功能程序被处理器1301译码并执行时，存储器1302中临时存放上述第三网元的功能程序的部分或全部内容。
在另一种可选实现方式中，这些第一网元、第二网元或第三网元的功能程序被设置于存储在通信装置1300内部的存储器1302中。当通信装置1300内部的存储器1302中存储 有第一网元的功能程序时，通信装置1300可被设置在本申请实施例的第一网元中。当通信装置1300内部的存储器1302中存储有第二网元的功能程序时，通信装置1300可被设置在本申请实施例的第二网元中。当通信装置1300内部的存储器1302中存储有第三网元的功能程序时，通信装置1300可被设置在本申请实施例的第三网元中。
在又一种可选实现方式中，这些第一网元的功能程序的部分内容存储在通信装置1300外部的存储器中，这些第一网元的功能程序的其他部分内容存储在通信装置1300内部的存储器1302中。或，这些第二网元的功能程序的部分内容存储在通信装置1300外部的存储器中，这些第二网元的功能程序的其他部分内容存储在通信装置1300内部的存储器1302中。或，这些第三网元的功能程序的部分内容存储在通信装置1300外部的存储器中，这些第三网元的功能程序的其他部分内容存储在通信装置1300内部的存储器1302中。
在本申请实施例中，通信装置1000、通信装置1100、通信装置1200及通信装置1300对应各个功能划分各个功能模块的形式来呈现，或者，可以采用集成的方式划分各个功能模块的形式来呈现。这里的“模块”可以指ASIC，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。
另外，图10所示的实施例提供的通信装置1000还可以通过其他形式实现。例如该通信装置包括处理模块和收发模块。例如处理模块可通过处理器1001实现，收发模块可通过收发器1002实现。其中，处理模块可以用于执行图7所示的实施例中的S73(例如，在第一请求信息用于请求获得URSP或至少一个PDU会话的第一应用的信息的情况下，第一网元向所述通信装置发送第一URSP，处理模块根据第一URSP获得第一应用的信息)，和/或用于支持本文所描述的技术的其它过程。收发模块可以用于执行图7所示的实施例中的S72，和/或用于支持本文所描述的技术的其它过程。或者，处理模块可以用于执行图8所示的实施例中的S83(例如，在第一请求信息用于请求获得URSP或至少一个PDU会话的第一应用的信息的情况下，第一网元向所述通信装置发送第一URSP，处理模块根据第一URSP获得第一应用的信息)，和/或用于支持本文所描述的技术的其它过程。收发模块可以用于执行图8所示的实施例中的S82，和/或用于支持本文所描述的技术的其它过程。或者，处理模块可以用于执行图9所示的实施例中的S93(例如，UDM从UDR接收的是第一URSP，则处理模块可以根据第一URSP获得第一应用的信息)，和/或用于支持本文所描述的技术的其它过程。收发模块可以用于执行图9所示的实施例中的S91、S92和S93，和/或用于支持本文所描述的技术的其它过程。
例如，处理模块，用于获得至少一个PDU会话的第一应用的信息，所述第一应用的信息根据第一URSP所确定；
收发模块，用于将所述第一应用的信息发送给第二网元，所述第一应用的信息用于验证所述至少一个PDU会话的第二应用的信息和所述第一应用的信息是否匹配，所述第二应用的信息为所述至少一个PDU会话中的数据包所属的应用的信息。
其中，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。
图11所示的实施例提供的通信装置1100还可以通过其他形式实现。例如该通信装置包括处理模块和收发模块。例如处理模块可通过处理器1101实现，收发模块可通过收发器1102实现。其中，处理模块可以用于执行图7所示的实施例中的S76，和/或用于支持本文所描述的技术的其它过程。收发模块可以用于执行图7所示的实施例中的S72、S73、S74 (例如，收发模块向UPF发送第三请求信息，所述第三请求信息用于指示UPF确定至少一个PDU会话中的数据包所属的应用的信息)、S75和S77，和/或用于支持本文所描述的技术的其它过程。或者，处理模块可以用于执行图8所示的实施例中的S86，和/或用于支持本文所描述的技术的其它过程。收发模块可以用于执行图8所示的实施例中的S82、S83、S84(例如，收发模块向UPF发送第三请求信息，所述第三请求信息用于指示UPF确定至少一个PDU会话中的数据包所属的应用的信息)、S85和S87，和/或用于支持本文所描述的技术的其它过程。或者，处理模块可以用于执行图9所示的实施例中的S96，和/或用于支持本文所描述的技术的其它过程。收发模块可以用于执行图9所示的实施例中的S93、S94(例如，收发模块向UPF发送第三请求信息，所述第三请求信息用于指示UPF确定至少一个PDU会话中的数据包所属的应用的信息)、S95和S97，和/或用于支持本文所描述的技术的其它过程。
例如，收发模块，用于接收至少一个PDU会话的第一应用的信息，其中，所述第一应用的信息根据第一URSP所确定；
处理模块，用于确定所述至少一个PDU会话的第二应用的信息和所述第一应用的信息是否匹配，所述第二应用的信息为所述至少一个PDU会话中的数据包所属的应用的信息；
收发模块，用于在处理模块确定所述第二应用的信息和所述第一应用的信息不匹配的情况下，向第一网元发送第二请求信息，所述第二请求信息用于请求所述第一网元下发所述第一URSP。
其中，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。
图12所示的实施例提供的通信装置1200还可以通过其他形式实现。例如该通信装置包括处理模块和收发模块。例如处理模块可通过处理器1201实现，收发模块可通过收发器1202实现。其中，处理模块可以用于执行图7所示的实施例中根据第一请求信息获得第一URSP或第一应用的信息的步骤、根据第二请求信息确定下发第一URSP的步骤，和/或用于支持本文所描述的技术的其它过程。收发模块可以用于执行图7所示的实施例中的S72、S73、S77和S78，和/或用于支持本文所描述的技术的其它过程。或者，处理模块可以用于执行图8所示的实施例中根据第一请求信息获得第一URSP或第一应用的信息的步骤、根据第二请求信息确定下发第一URSP的步骤，和/或用于支持本文所描述的技术的其它过程。收发模块可以用于执行图8所示的实施例中的S82、S83、S87和S88，和/或用于支持本文所描述的技术的其它过程。或者，处理模块可以用于执行图9所示的实施例中根据第一请求信息获得第一URSP或第一应用的信息的步骤、根据第二请求信息确定下发第一URSP的步骤，和/或用于支持本文所描述的技术的其它过程。收发模块可以用于执行图9所示的实施例中的S91、S92、S97和S98，和/或用于支持本文所描述的技术的其它过程。
例如，收发模块，用于接收第三网元发送的第一请求信息，所述第一请求信息用于请求获得第一URSP，或用于请求获得至少一个PDU会话的第一应用的信息，其中，所述第一应用的信息根据第一URSP所确定；
收发模块，还用于在处理模块确定所述第一请求信息用于请求获得第一URSP的情况下，向所述第三网元发送第一URSP；或，在处理模块确定所述第一请求信息用于请求获得所述第一应用的信息的情况下，向所述第三网元发送所述第一应用的信息。
其中，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。
由于本申请实施例提供的通信装置1000、通信装置1100、通信装置1200及通信装置1300可用于执行图7所示的实施例、图8所示的实施例或图9所示的实施例所提供的方法，因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
本申请实施例是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，数字通用光盘(digital versatile disc，DVD))、或者半导体介质(例如，固态硬盘(solid state disk，SSD))等。
显然，本领域的技术人员可以对本申请实施例进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请实施例的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (28)

  1. 一种通信方法，其特征在于，包括：
    获得至少一个分组数据单元PDU会话的第一应用的信息，所述第一应用的信息根据第一用户设备路由选择策略URSP所确定；
    将所述第一应用的信息发送给第二网元，所述第一应用的信息用于验证所述至少一个PDU会话的第二应用的信息和所述第一应用的信息是否匹配，所述第二应用的信息为所述至少一个PDU会话中的数据包所属的应用的信息。
  2. 根据权利要求1所述的方法，其特征在于，获得至少一个PDU会话的第一应用的信息，包括：
    向第一网元发送第一请求信息，所述第一请求信息用于请求获得所述第一应用的信息，接收所述第一应用的信息；或，
    向第一网元发送第一请求信息，所述第一请求信息用于请求获得所述第一URSP，接收所述第一URSP，并根据所述第一URSP获得所述第一应用的信息。
  3. 根据权利要求2所述的方法，其特征在于，所述第一请求信息包括第一PDU会话的标识信息，所述至少一个PDU会话为所述第一PDU会话。
  4. 一种通信方法，其特征在于，包括：
    接收至少一个分组数据单元PDU会话的第一应用的信息，其中，所述第一应用的信息根据第一用户设备路由选择策略URSP所确定；
    确定所述至少一个PDU会话的第二应用的信息和所述第一应用的信息是否匹配，所述第二应用的信息为所述至少一个PDU会话中的数据包所属的应用的信息；
    在确定所述第二应用的信息和所述第一应用的信息不匹配的情况下，向第一网元发送第二请求信息，所述第二请求信息用于请求所述第一网元下发所述第一URSP。
  5. 根据权利要求4所述的方法，其特征在于，所述方法还包括：
    向所述第一网元发送第一请求信息，所述第一请求信息用于请求获得所述第一应用的信息，或用于请求获得所述第一URSP。
  6. 根据权利要求4或5所述的方法，其特征在于，所述方法还包括：
    向用户面功能UPF发送第三请求信息，所述第三请求信息用于指示所述UPF确定所述至少一个PDU会话中的数据包所属的应用的信息；
    接收所述UPF发送的所述第二应用的信息。
  7. 根据权利要求4所述的方法，其特征在于，所述方法还包括：
    检测所述至少一个PDU会话中传输的数据包所属的应用，得到所述第二应用的信息。
  8. 根据权利要求4-7所述的方法，其特征在于，向第一网元发送第二请求信息，包括：
    向接入和移动性管理功能AMF发送所述第二请求信息，以通过所述AMF将所述第二请求信息转发给所述第一网元；或，
    向第一策略控制功能PCF发送所述第二请求信息，以通过所述第一PCF将所述第二请求信息转发给所述第一网元，所述第一PCF为与会话管理功能SMF相连的PCF。
  9. 根据权利要求4-8任一所述的方法，其特征在于，所述第一网元为第二PCF或统一数据库UDR，所述第二PCF为用于接入和移动性管理AM策略控制的PCF。
  10. 一种通信方法，其特征在于，包括：
    接收第三网元发送的第一请求信息，所述第一请求信息用于请求获得第一用户设备路 由选择策略URSP，或用于请求获得至少一个分组数据单元PDU会话的第一应用的信息，其中，所述第一应用的信息根据第一URSP所确定；
    在所述第一请求信息用于请求获得第一URSP的情况下，向所述第三网元发送第一URSP；或，在所述第一请求信息用于请求获得所述第一应用的信息的情况下，向所述第三网元发送所述第一应用的信息。
  11. 根据权利要求10所述的方法，其特征在于，所述第一请求信息还携带第一PDU会话的标识信息；
    所述第一请求信息用于请求获得用于确定所述第一PDU会话的第一应用的信息的所述第一URSP；或，所述第一请求信息用于请求获得所述第一PDU会话的第一应用的信息，所述第一应用的信息包括所述第一PDU会话的第一应用的信息。
  12. 根据权利要求10或11所述的方法，其特征在于，所述方法还包括：
    接收所述第三网元发送的第二请求信息，所述第二请求信息用于请求下发所述第一URSP；
    发送所述第一URSP。
  13. 一种通信装置，其特征在于，包括：
    处理模块，用于获得至少一个分组数据单元PDU会话的第一应用的信息，所述第一应用的信息根据第一用户设备路由选择策略URSP所确定；
    收发模块，用于将所述第一应用的信息发送给第二网元，所述第一应用的信息用于验证所述至少一个PDU会话的第二应用的信息和所述第一应用的信息是否匹配，所述第二应用的信息为所述至少一个PDU会话中的数据包所属的应用的信息。
  14. 根据权利要求13所述的通信装置，其特征在于，所述处理模块具体用于：
    通过所述收发模块向第一网元发送第一请求信息，所述第一请求信息用于请求获得所述第一应用的信息，通过所述收发模块接收所述第一应用的信息；或，
    通过所述收发模块向第一网元发送第一请求信息，所述第一请求信息用于请求获得所述第一URSP，通过所述收发模块接收所述第一URSP，并根据所述第一URSP获得所述第一应用的信息。
  15. 根据权利要求14所述的通信装置，其特征在于，所述第一请求信息包括第一PDU会话的标识信息，所述至少一个PDU会话为所述第一PDU会话。
  16. 一种通信装置，其特征在于，包括：
    收发模块，用于接收至少一个分组数据单元PDU会话的第一应用的信息，其中，所述第一应用的信息根据第一用户设备路由选择策略URSP所确定；
    处理模块，用于确定所述至少一个PDU会话的第二应用的信息和所述第一应用的信息是否匹配，所述第二应用的信息为所述至少一个PDU会话中的数据包所属的应用的信息；
    收发模块，用于在所述处理模块确定所述第二应用的信息和所述第一应用的信息不匹配的情况下，向第一网元发送第二请求信息，所述第二请求信息用于请求所述第一网元下发所述第一URSP。
  17. 根据权利要求16所述的通信装置，其特征在于，所述收发模块还用于：
    向所述第一网元发送第一请求信息，所述第一请求信息用于请求获得所述第一应用的信息，或用于请求获得所述第一URSP。
  18. 根据权利要求16或17所述的通信装置，其特征在于，所述收发模块还用于：
    向用户面功能UPF发送第三请求信息，所述第三请求信息用于指示所述UPF确定所述至少一个PDU会话中的数据包所属的应用的信息；
    接收所述UPF发送的所述第二应用的信息。
  19. 根据权利要求16所述的通信装置，其特征在于，所述处理模块还用于：
    检测所述至少一个PDU会话中传输的数据包所属的应用，得到所述第二应用的信息。
  20. 根据权利要求16-19任一所述的通信装置，其特征在于，所述收发模块具体用于：
    向接入和移动性管理功能AMF发送所述第二请求信息，以通过所述AMF将所述第二请求信息转发给所述第一网元；或，
    向第一策略控制功能PCF发送所述第二请求信息，以通过所述第一PCF将所述第二请求信息转发给所述第一网元，所述第一PCF为与会话管理功能SMF相连的PCF。
  21. 根据权利要求16-20任一所述的通信装置，其特征在于，所述第一网元为第二PCF或统一数据库UDR，所述第二PCF为用于接入和移动性管理AM策略控制的PCF。
  22. 一种通信装置，其特征在于，包括收发模块和处理模块，其中：
    所述收发模块，用于接收第三网元发送的第一请求信息，所述第一请求信息用于请求获得第一用户设备路由选择策略URSP，或用于请求获得至少一个分组数据单元PDU会话的第一应用的信息，其中，所述第一应用的信息根据第一URSP所确定；
    所述收发模块，还用于在所述处理模块确定所述第一请求信息用于请求获得第一URSP的情况下，向所述第三网元发送第一URSP；或，在所述处理模块确定所述第一请求信息用于请求获得所述第一应用的信息的情况下，向所述第三网元发送所述第一应用的信息。
  23. 根据权利要求22所述的通信装置，其特征在于，所述第一请求信息还携带第一PDU会话的标识信息；
    所述第一请求信息用于请求获得用于确定所述第一PDU会话的第一应用的信息的所述第一URSP；或，所述第一请求信息用于请求获得所述第一PDU会话的第一应用的信息，所述第一应用的信息包括所述第一PDU会话的第一应用的信息。
  24. 根据权利要求22或23所述的通信装置，其特征在于，所述收发模块还用于：
    接收所述第三网元发送的第二请求信息，所述第二请求信息用于请求下发所述第一URSP；
    发送所述第一URSP。
  25. 一种通信系统，其特征在于，包括如权利要求13-15任一项所述的通信装置，如权利要求16-21任一项所述的通信装置，以及如权利要求22-24任一项所述的通信装置。
  26. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行如权利要求1-3中任意一项所述的方法，或使得所述计算机执行如权利要求4-9任一所述的方法，或使得所述计算机执行如权利要求10-12任一所述的方法。
  27. 一种芯片系统，其特征在于，所述芯片系统包括：
    存储器：用于存储指令；
    处理器，用于从所述存储器中调用并运行所述指令，使得安装有所述芯片系统的通信设备执行如权利要求1-3中任意一项所述的方法，或使得所述通信设备执行如权利要求4-9 任一所述的方法，或使得所述通信设备执行如权利要求10-12任一所述的方法。
  28. 一种计算机程序产品，其特征在于，所述计算机程序产品包括计算机程序，当所述计算机程序在计算机上运行时，使得计算机执行如权利要求1-3中任意一项所述的方法，或使得所述计算机执行如权利要求4-9任一所述的方法，或使得所述计算机执行如权利要求10-12任一所述的方法。
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