WO2022021971A1 - Procédé de communication, premier élément de réseau de commande de politique et système de communication - Google Patents

Procédé de communication, premier élément de réseau de commande de politique et système de communication Download PDF

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Publication number
WO2022021971A1
WO2022021971A1 PCT/CN2021/090340 CN2021090340W WO2022021971A1 WO 2022021971 A1 WO2022021971 A1 WO 2022021971A1 CN 2021090340 W CN2021090340 W CN 2021090340W WO 2022021971 A1 WO2022021971 A1 WO 2022021971A1
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Prior art keywords
dnn
network element
policy control
policy
control network
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PCT/CN2021/090340
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English (en)
Chinese (zh)
Inventor
丁辉
陆长奇
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华为技术有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/24—Accounting or billing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a communication method, a first policy control network element, and a communication system.
  • the Data Network Name (DNN) replacement mechanism is defined in the 3rd generation partnership project (3GPP) standard.
  • 3GPP 3rd generation partnership project
  • the present application provides a communication method, a first policy control network element and a communication system for implementing differentiated policy control.
  • an embodiment of the present application provides a communication method, including: a first policy controls a network element to obtain a first DNN and a second DNN, the first DNN is a DNN before replacement requested by a terminal device, and the second DNN is The DNN is a replaced DNN corresponding to the first DNN; the first policy control network element generates a policy charging control rule according to the first DNN and the second DNN.
  • the first policy control network element can obtain the first DNN and the second DNN at the same time, and generate policy charging control rules according to the first DNN and the second DNN, so that the first DNN based on the actual request of the terminal device can be implemented.
  • Implement differentiated policy control
  • the obtaining, by the first policy control network element, the first DNN and the second DNN includes: the first policy control network element receiving a policy association establishment request from a session management network element, the The policy association establishment request carries the first DNN and the second DNN.
  • the obtaining, by the first policy control network element, the first DNN and the second DNN includes: the first policy control network element receiving a policy association establishment request from a session management network element, the The policy association establishment request carries the second DNN; the first policy control network element sends a request message to the second policy control network element, the request message carries the second DNN, and the request message is used to request the The DNN before replacement corresponding to the second DNN; the first policy control network element receives the first DNN from the second policy control network element.
  • the first policy control network element obtains the first DNN from the second policy control network element based on an independent signaling message, which helps to reduce process changes to the mobility management network element and the session management network element in the existing network.
  • the first policy control network element is a policy control network element used for session management
  • the second policy control network element is used for access and mobility management and/or used for Policy control network element that provides terminal device policies.
  • the first policy control network element sends a registration request to the binding support network element, where the registration request carries the identity of the first policy control network element and session information, and the session information includes The address of the first DNN, the second DNN and the terminal device, and the registration request is used to request to establish a mapping relationship between the identifier of the first policy control network element and the session information.
  • the application function network element can search the binding support network element based on the first DNN or the second DNN for the identification of the policy control network element for session management that provides services for the terminal device, thereby improving the DNN replacement scenario. communication efficiency and communication quality.
  • an embodiment of the present application provides a communication method, including: a first policy control network element acquiring a first DNN, where the first DNN is a DNN before replacement requested by a terminal device; the first policy control network element According to the first DNN, a policy charging control rule is generated.
  • the first policy control network element can simultaneously obtain the first DNN, and generate policy charging control rules according to the first DNN, thereby implementing differentiated policy control based on the first DNN actually requested by the terminal device.
  • the obtaining, by the first policy control network element, the first DNN includes: the first policy control network element receiving a policy association establishment request from a session management network element, the policy association establishment request Carry the first DNN.
  • the obtaining, by the first policy control network element, the first DNN includes: the first policy control network element receiving a policy association establishment request from a session management network element, the policy association establishment request Carrying a second DNN, where the second DNN is a replaced DNN corresponding to the first DNN; the first policy control network element sends a request message to the second policy control network element, and the request message carries the For the second DNN, the request message is used to request the DNN before replacement corresponding to the second DNN; the first policy control network element receives the first DNN from the second policy control network element.
  • the first policy control network element obtains the first DNN from the second policy control network element based on an independent signaling message, which helps to reduce process changes to the mobility management network element and the session management network element in the existing network.
  • the first policy control network element is a policy control network element used for session management
  • the second policy control network element is used for access and mobility management and/or for Policy control network element that provides terminal device policies.
  • the first policy control network element sends a registration request to the binding support network element, where the registration request carries the identity of the first policy control network element and session information, and the session information includes The address of the first DNN and the terminal device, and the registration request is used to request to establish a mapping relationship between the identifier of the first policy control network element and the session information.
  • the application function network element can search the binding support network element based on the first DNN or the second DNN for the identification of the policy control network element for session management that provides services for the terminal device, thereby improving the DNN replacement scenario. communication efficiency and communication quality.
  • an embodiment of the present application provides a communication method, including: a second policy control network element receiving a request message from a first policy control network element, where the request message carries the second DNN, the second DNN is the replaced DNN corresponding to the first DNN, and the first DNN is the DNN before the replacement requested by the terminal device; the second policy controls the network element to obtain the first DNN according to the second DNN; The second policy control network element sends the first DNN to the first policy control network element.
  • the first policy control network element obtains the first DNN from the second policy control network element based on an independent signaling message, which helps to reduce process changes to the mobility management network element and the session management network element in the existing network.
  • the second policy control network element receives a policy association update request from a mobility management network element, and the policy association update request carries the first DNN; the second policy control network element Element obtains the second DNN according to the first DNN, and generates a replacement record, the replacement record includes a time stamp, and the time stamp is used to indicate that the time information of the second DNN is obtained according to the first DNN; The second policy control network element sends a policy association update response to the mobility management network element, where the policy association update response carries the second DNN.
  • the second policy controlling the network element to acquire the first DNN according to the second DNN includes: the second policy controlling the network element according to the timestamp and the first DNN. Second DNN, obtain the first DNN.
  • an embodiment of the present application provides a communication method, including: a binding support network element receives a registration request from a first policy control network element, where the registration request carries an identifier and a session of the first policy control network element information, the session information includes the first DNN and the address of the terminal device, the first DNN is the DNN before the replacement requested by the terminal device; the binding support network element establishes the address of the first policy control network element the mapping relationship between the identifier and the session information; the binding support network element receives a query request from the application function network element, and the query request carries the address of the terminal device and the first DNN; the binding support network element The element sends, to the application function network element, the identifier of the first policy control network element corresponding to the address of the terminal device and the first DNN according to the mapping relationship.
  • the application function network element can search the binding support network element based on the first DNN for the identification of the policy control network element for session management that provides services for the terminal device, thereby improving the communication efficiency in the DNN replacement scenario. communication quality.
  • the session information further includes a second DNN, where the second DNN is a replaced DNN corresponding to the first DNN.
  • an embodiment of the present application provides a communication apparatus, where the apparatus may be a first policy control network element, and may also be a chip used for the first policy control network element.
  • the apparatus has the function of implementing the first aspect, the second aspect, each possible implementation method of the first aspect, or each possible implementation method of the second aspect. This function can be implemented by hardware or by executing corresponding software by hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • an embodiment of the present application provides a communication device, where the device may be a second policy control network element, and may also be a chip used for the second policy control network element.
  • the apparatus has the function of implementing the third aspect or each possible implementation method of the third aspect. This function can be implemented by hardware or by executing corresponding software by hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • an embodiment of the present application provides a communication device, where the device may be a binding support network element, and may also be a chip for binding a support network element.
  • the device has the function of implementing the fourth aspect or each possible implementation method of the fourth aspect. This function can be implemented by hardware or by executing corresponding software by hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • an embodiment of the present application provides a communication device, including a processor and a memory; the memory is used to store computer-executed instructions, and when the device is running, the processor executes the computer-executed instructions stored in the memory, so that the The apparatus executes any of the above-mentioned methods of the first to fourth aspects and possible implementation methods of the first to fourth aspects.
  • an embodiment of the present application provides a communication device, including a communication device for performing each step of the methods of the first aspect to the fourth aspect and any of the possible implementation methods of the first aspect to the fourth aspect. Units or means.
  • an embodiment of the present application provides a communication device, including a processor and an interface circuit, where the processor is configured to communicate with other devices through the interface circuit, and execute the methods of the first to fourth aspects and the first aspect Any of the possible implementation methods to the fourth aspect.
  • the processor includes one or more.
  • an embodiment of the present application provides a communication device, including a processor, which is connected to a memory and used to call a program stored in the memory to execute the methods of the first to fourth aspects and the first Any of the possible implementation methods of the first aspect to the fourth aspect.
  • the memory may be located within the device or external to the device.
  • the processor includes one or more.
  • an embodiment of the present application further provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium runs on a computer, the processor causes the processor to execute the above-mentioned first to fourth aspects The method of the aspect and any of the possible implementation methods of the first to fourth aspects.
  • an embodiment of the present application further provides a computer program product, the computer product includes a computer program, when the computer program runs, the methods of the first to fourth aspects and the methods of the first to fourth aspects are enabled. Any of the possible implementations.
  • an embodiment of the present application further provides a chip system, including: a processor configured to execute the methods of the first aspect to the fourth aspect and any of the possible implementation methods of the first aspect to the fourth aspect any method.
  • FIG. 1 is a schematic diagram of a communication system provided by an embodiment of the present application.
  • Figure 2 is a schematic diagram of the 5G network architecture
  • FIG. 3 is a schematic diagram of a DNN replacement process provided by an embodiment of the present application.
  • FIG. 4(a) is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 4(b) is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a communication device according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of still another communication apparatus provided by an embodiment of the present application.
  • the present application provides a communication system, which includes a first policy control network element and a session management network element.
  • the system further includes a second policy control network element and/or a binding support network element.
  • the first policy control network element is a policy control network element used for session management
  • the second policy control network element is a policy control network element used for access and mobility management and/or for providing terminal device policies.
  • Policies control network elements are included in the communication system.
  • a session management network element configured to send a policy association establishment request to the first policy control network element, where the policy association establishment request carries a first data network name DNN and a second DNN, and the first DNN is requested by the terminal device
  • the DNN before replacement, the second DNN is the DNN after replacement corresponding to the first DNN.
  • the first policy control network element is configured to receive the policy association establishment request from the session management network element; and generate a policy charging control rule according to the first DNN and the second DNN.
  • the first policy control network element is further configured to send a registration request to the binding support network element, where the registration request carries the identity and session of the first policy control network element information, the session information includes the address of the first DNN and the terminal device, and the registration request is used to request to establish a mapping relationship between the identifier of the first policy control network element and the session information.
  • the binding support network element is configured to receive the registration request from the first policy control network element; and establish a mapping relationship between the identifier of the first policy control network element and the session information.
  • the binding support network element is further configured to receive a query request from an application function network element, where the query request carries the address of the terminal device and the first DNN; according to the mapping relationship, and send the identifier of the first policy control network element corresponding to the address of the terminal device and the first DNN to the application function network element.
  • the session information further includes the second DNN.
  • a session management network element configured to send a policy association establishment request to the first policy control network element, where the policy association establishment request carries a second data network name DNN, and the second DNN is a replacement corresponding to the first DNN DNN, the first DNN is the DNN before replacement requested by the terminal device.
  • the first policy control network element is configured to receive the policy association establishment request from the session management network element; send a request message to the second policy control network element, where the request message carries the second DNN, and the request message for requesting the DNN before the replacement corresponding to the second DNN; receiving the first DNN from the second policy control network element; generating a policy charging control rule according to the first DNN and the second DNN .
  • a second policy control network element is configured to receive a policy association update request from a mobility management network element, where the policy association update request carries the first DNN; according to the first DNN Obtain the second DNN, and generate a replacement record, the replacement record includes a time stamp, and the time stamp is used to indicate that the time information of the second DNN is obtained according to the first DNN; to the mobility management network The element sends a policy association update response, and the policy association update response carries the second DNN.
  • the second policy control network element is configured to acquire the first DNN according to the second DNN, specifically including: being configured to obtain the first DNN according to the timestamp and the second DNN , to obtain the first DNN.
  • the first policy control network element is further configured to send a registration request to the binding support network element, where the registration request carries the identity and session of the first policy control network element information, the session information includes the address of the first DNN and the terminal device, and the registration request is used to request to establish a mapping relationship between the identifier of the first policy control network element and the session information.
  • the binding support network element is configured to receive the registration request from the first policy control network element; and establish a mapping relationship between the identifier of the first policy control network element and the session information.
  • the binding support network element is further configured to receive a query request from an application function network element, where the query request carries the address of the terminal device and the first DNN; according to the mapping relationship, and send the identifier of the first policy control network element corresponding to the address of the terminal device and the first DNN to the application function network element.
  • the session information further includes the second DNN.
  • a session management network element configured to send a policy association establishment request to the first policy control network element, where the policy association establishment request carries a first data network name DNN, and the first DNN is the DNN before replacement requested by the terminal device .
  • the first policy control network element is configured to receive the policy association establishment request from the session management network element; and generate a policy charging control rule according to the first DNN.
  • the first policy control network element is further configured to send a registration request to the binding support network element, where the registration request carries the identity and session of the first policy control network element information, the session information includes the address of the first DNN and the terminal device, and the registration request is used to request to establish a mapping relationship between the identifier of the first policy control network element and the session information.
  • the binding support network element is configured to receive the registration request from the first policy control network element; and establish a mapping relationship between the identifier of the first policy control network element and the session information.
  • the binding support network element is further configured to receive a query request from an application function network element, where the query request carries the address of the terminal device and the first DNN; according to the mapping relationship, and send the identifier of the first policy control network element corresponding to the address of the terminal device and the first DNN to the application function network element.
  • a session management network element configured to send a policy association establishment request to the first policy control network element, where the policy association establishment request carries a second data network name DNN, and the second DNN is a replacement corresponding to the first DNN DNN, the first DNN is the DNN before replacement requested by the terminal device.
  • the first policy control network element is configured to receive the policy association establishment request from the session management network element; send a request message to the second policy control network element, where the request message carries the second DNN, and the request message for requesting the DNN before replacement corresponding to the second DNN; receiving the first DNN from the second policy control network element; and generating a policy charging control rule according to the first DNN.
  • a second policy control network element is configured to receive a policy association update request from a mobility management network element, where the policy association update request carries the first DNN; according to the first DNN Obtain the second DNN, and generate a replacement record, the replacement record includes a time stamp, and the time stamp is used to indicate that the time information of the second DNN is obtained according to the first DNN; to the mobility management network The element sends a policy association update response, and the policy association update response carries the second DNN.
  • the second policy control network element is configured to acquire the first DNN according to the second DNN, specifically including: being configured to obtain the first DNN according to the timestamp and the second DNN , to obtain the first DNN.
  • the first policy control network element is further configured to send a registration request to the binding support network element, where the registration request carries the identity and session of the first policy control network element information, the session information includes the address of the first DNN and the terminal device, and the registration request is used to request the establishment of a mapping relationship between the identifier of the first policy control network element and the session information; the The binding support network element is configured to receive the registration request from the first policy control network element; and establish a mapping relationship between the identifier of the first policy control network element and the session information.
  • the binding support network element is further configured to receive a query request from an application function network element, where the query request carries the address of the terminal device and the first DNN; according to the mapping relationship, and send the identifier of the first policy control network element corresponding to the address of the terminal device and the first DNN to the application function network element.
  • the session management network element is further configured to receive session context establishment from the mobility management network element request, the session context establishment request carries the first DNN and the second DNN.
  • the first policy control network element is used to send a registration request to the binding support network element, where the registration request carries the identity of the first policy control network element and session information, where the session information includes the first DNN and the terminal device. address, the registration request is used to request to establish a mapping relationship between the identifier of the first policy control network element and the session information; the binding support network element is used to receive data from the first policy control network element The registration request of the element; establishing the mapping relationship between the identifier of the first policy control network element and the session information.
  • the binding support network element is further configured to receive a query request from an application function network element, where the query request carries the address of the terminal device and the first DNN; according to the mapping relationship, and send the identifier of the first policy control network element corresponding to the address of the terminal device and the first DNN to the application function network element.
  • the session information further includes the second DNN.
  • the system shown in Figure 1 can be used in the 5th generation (5G) network architecture shown in Figure 2, and of course, it can also be used in future network architectures, such as the 6th generation (6G) network architecture, etc. , which is not limited in this application.
  • 5G 5th generation
  • 6G 6th generation
  • the network element or entity corresponding to the session management network element in FIG. 1 may be a session management function (SMF) network element in the 5G network architecture shown in FIG.
  • the corresponding network element or entity may be the Binding Support Function (BSF) network element in the 5G network architecture shown in FIG. 2, and the network element or entity corresponding to the first policy control network element in FIG. 1 may be.
  • SMF session management function
  • BSF Binding Support Function
  • PCF Policy Control Function
  • SM PCF Session Management
  • a PCF Access and Mobility Control
  • the 5G network architecture shown in Figure 2 may include three parts, namely the terminal equipment part, the data network (DN) and the operator network part. The following briefly describes the functions of some of the network elements.
  • the operator network may include one or more of the following network elements: PCF network element, unified data management (unified data management, UDM), unified data warehouse (Unified Data Repository, UDR), application function (Application Function, AF) ) network element, Access and Mobility Management Function (AMF) network element, SMF network element, radio access network (RAN) and user plane function (UPF) network element, BSF network element, etc.
  • PCF network element unified data management
  • UDM unified data management
  • UDR Unified Data Repository
  • AMF Access and Mobility Management Function
  • SMF radio access network
  • RAN radio access network
  • UPF user plane function
  • the terminal device in this embodiment of the present application may be a device for implementing a wireless communication function.
  • the terminal equipment may be a user equipment (UE), an access terminal, a terminal unit, a terminal station, a mobile station, a mobile station in a 5G network or a public land mobile network (PLMN) evolved in the future.
  • UE user equipment
  • PLMN public land mobile network
  • remote station remote terminal
  • mobile device wireless communication device
  • terminal agent or terminal device etc.
  • the access terminal may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices or wearable devices, virtual reality (VR) end devices, augmented reality (AR) end devices, industrial control (industrial) wireless terminal in control), wireless terminal in self-driving, wireless terminal in remote medical, wireless terminal in smart grid, wireless terminal in transportation safety Terminals, wireless terminals in smart cities, wireless terminals in smart homes, etc. Terminals can be mobile or stationary.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • a wireless communication Functional handheld devices computing devices or other processing devices connected to wireless modems, in-vehicle devices or wearable devices, virtual reality (VR) end devices, augmented reality (AR) end devices, industrial control (industrial) wireless terminal in control), wireless terminal in self-driving,
  • the above-mentioned terminal device can establish a connection with the operator network through an interface (eg, N1, etc.) provided by the operator network, and use the data and/or voice services provided by the operator network.
  • the terminal device can also access the DN through the operator's network, and use the operator's service deployed on the DN and/or the service provided by a third party.
  • the above-mentioned third party may be a service party other than the operator's network and the terminal device, and may provide other data and/or voice services for the terminal device.
  • the specific expression form of the above third party can be specifically determined according to the actual application scenario, and is not limited here.
  • RAN is a sub-network of an operator's network, and is an implementation system between service nodes and terminal equipment in the operator's network.
  • the terminal device To access the operator's network, the terminal device first passes through the RAN, and then can be connected to the service node of the operator's network through the RAN.
  • the RAN device in this application is a device that provides a wireless communication function for a terminal device, and the RAN device is also called an access network device.
  • the RAN equipment in this application includes but is not limited to: next-generation base station (g nodeB, gNB), evolved node B (evolved node B, eNB), radio network controller (radio network controller, RNC), node B in 5G (node B, NB), base station controller (BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved nodeB, or home node B, HNB), baseband unit (baseBand unit, BBU), transmission point (transmitting and receiving point, TRP), transmitting point (transmitting point, TP), mobile switching center, etc.
  • next-generation base station g nodeB, gNB
  • evolved node B evolved node B
  • eNB evolved node B
  • RNC radio network controller
  • node B in 5G node B, NB
  • base station controller BSC
  • base transceiver station base transceiver station
  • BTS home base station
  • base station for example, home
  • the AMF network element mainly performs functions such as mobility management and access authentication/authorization. In addition, it is also responsible for transferring user policies between UE and PCF.
  • the SMF network element mainly performs functions such as session management, execution of control policies issued by PCF, selection of UPF, and allocation of UE Internet Protocol (IP) addresses.
  • IP Internet Protocol
  • the UPF network element as the interface UPF with the data network, implements functions such as user plane data forwarding, session/flow-level accounting statistics, and bandwidth limitation.
  • the UDM network element is mainly responsible for the management of contract data, user access authorization and other functions.
  • UDR is mainly responsible for the access function of contract data, policy data, application data and other types of data.
  • the AF network element mainly conveys the requirements of the application side to the network side, such as quality of service (Quality of Service, QoS) requirements or user status event subscriptions.
  • the AF may be a third-party functional entity or an application service deployed by an operator, such as an IP Multimedia Subsystem (IP Multimedia Subsystem, IMS) voice call service.
  • IP Multimedia Subsystem IP Multimedia Subsystem
  • the PCF network element is mainly responsible for policy control functions such as charging for sessions and service flow levels, QoS bandwidth guarantee and mobility management, and UE policy decision-making.
  • the PCF connected to the AMF includes the AM PCF and the PCF for UE policy control (PCF for Access and Mobility Control, UE PCF), and the PCF connected to the SMF is the SM PCF.
  • the functions of the AM PCF and the UE PCF are usually provided by the same PCF, which may or may not be the same PCF entity as the SM PCF.
  • AM PCF will be used to refer to PCF that provides both UE Policy and AM Policy.
  • the BSF network element is mainly used to receive the PCF ID and session information registered by the SM PCF (such as Subscription Permanent Identifier (SUPI), Generic Public Subscription Identity (GPSI), UE address, DNN or single
  • SUPI Subscription Permanent Identifier
  • GPSI Generic Public Subscription Identity
  • UE address UE address
  • DNN DNN
  • S-NSSAI single network slice selection assistance information
  • a DN is a network outside the operator's network.
  • the operator's network can access multiple DNs, and multiple services can be deployed on the DNs, which can provide data and/or voice services for terminal devices.
  • DN is the private network of a smart factory.
  • the sensors installed in the workshop of the smart factory can be terminal devices, and the control server of the sensor is deployed in the DN, and the control server can provide services for the sensor.
  • the sensor can communicate with the control server, obtain the instruction of the control server, and transmit the collected sensor data to the control server according to the instruction.
  • the DN is an internal office network of a company.
  • the mobile phones or computers of employees of the company can be terminal devices, and the mobile phones or computers of employees can access information and data resources on the internal office network of the company.
  • N7 the interface between PCF and SMF, used for delivering PDU session granularity and business data flow granularity control policy.
  • N15 the interface between the PCF and the AMF, used for delivering UE policies and access control related policies.
  • N5 the interface between the AF and the PCF, used for application service request delivery and network event reporting.
  • N4 The interface between the SMF and the UPF, used to transmit information between the control plane and the user plane, including controlling the distribution of forwarding rules for the user plane, QoS control rules, traffic statistics rules, etc., and information on the user plane report.
  • N11 the interface between the SMF and the AMF, used to transfer the PDU session tunnel information between the RAN and the UPF, the control message sent to the UE, the radio resource control information sent to the RAN, and the like.
  • N2 the interface between the AMF and the RAN, used to transmit radio bearer control information from the core network side to the RAN, etc.
  • N1 the interface between the AMF and the UE, irrespective of access, used to deliver QoS control rules and the like to the UE.
  • N8 the interface between the AMF and the UDM, for the AMF to obtain the subscription data and authentication data related to access and mobility management from the UDM, and the AMF to register the current mobility management related information of the UE to the UDM.
  • N10 the interface between the SMF and the UDM, for the SMF to obtain the session management related subscription data from the UDM, and the SMF to register the UE's current session related information to the UDM.
  • N35 an interface between the UDM and the UDR, used for the UDM to obtain user subscription data information from the UDR.
  • N36 an interface between the PCF and the UDR, for the PCF to obtain the policy-related subscription data and application data-related information from the UDR.
  • network elements or functions may be network elements in hardware devices, software functions running on dedicated hardware, or virtualized functions instantiated on a platform (eg, a cloud platform).
  • a platform eg, a cloud platform
  • the foregoing network element or function may be implemented by one device, or may be implemented jointly by multiple devices, or may be a functional module in one device, which is not specifically limited in this embodiment of the present application.
  • the session management network element, the first policy control network element, the second policy control network element, the binding support network element, and the application function network element in this application may be SMF, SM PCF, AM PCF, BSF, AF may also be a network element having the functions of the above-mentioned SMF, SM PCF, AM PCF, BSF, and AF in future communications such as 6G networks, which is not limited in this application.
  • the session management network element, the first policy control network element, the second policy control network element, the binding support network element, and the application function network element are respectively the above-mentioned SMF, SM PCF, AM PCF, BSF, and AF.
  • the terminal device is UE as an example for description.
  • the general user registration process can be simply described as follows: the UE sends a registration request to the AMF through the RAN, the AMF obtains the subscription data from a specific UDM according to the user ID, and the UDM can obtain the actual subscription data from the UDR after receiving the registration request.
  • the AMF may also initiate a user policy control creation request (UEPolicyControl_Create) and an access management policy control creation request (AMPolicyControl_Create) to the PCF, which are used to obtain the UE policy and the access control policy, respectively.
  • the PCF returns the access control policy to the AMF in this process, and provides the UE policy to the UE via the AMF.
  • the general session establishment process can be simply described as: the UE sends a session establishment request to the AMF through the RAN, the AMF selects the SMF to provide services for the session, saves the correspondence between the SMF and the PDU session, and sends the session establishment request to the selected SMF, SMF selects the corresponding UPF for the UE, establishes a user plane transmission path, and assigns an IP address to it.
  • the SMF also initiates a policy control session establishment request to the PCF for establishing a policy control session between the SMF and the PCF.
  • the SMF saves the correspondence between the policy control session and the PDU session.
  • the AF can also establish an AF session with the PCF, and the PCF binds the AF session and the policy control session.
  • the DNN replacement mechanism is defined in the 3GPP standard.
  • the old DNN may be carried in the PDU session establishment request initiated by the UE, because the DNN has been abandoned in the operator's contract information. , so the DNN replacement action needs to be performed at the core network level to ensure the success rate of PDU session establishment.
  • the schematic diagram of the DNN replacement process provided in the embodiment of the present application includes the following steps:
  • step 300 the DNN replaces the event subscription.
  • AM PCF subscribes to AMF for DNN replacement events, that is, subscribes to AMF: when AMF receives a specific DNN, it requests AM PCF to obtain the selected DNN, that is, AM PCF replaces the requested DNN (Requested DNN) with the selected DNN ( Selected DNN).
  • the specific DNN can be provided by the AM PCF to the AMF.
  • the AM PCF sends a DNN list to the AMF, which contains one or more specific DNNs.
  • the AMF is triggered to request the AM PCF to obtain the selected DNN corresponding to the DNN.
  • a specific DNN can also be pre-configured on the AMF.
  • the AMF is triggered to request the AM PCF to obtain the selected DNN corresponding to the DNN.
  • the AMF determines that the currently requested DNN does not appear in the subscription DNN list, and then triggers a request to the AM PCF to obtain the selected DNN corresponding to the DNN.
  • Step 301 the UE sends a PDU session establishment request to the AMF. Accordingly, the AMF may receive the PDU session establishment request.
  • the PDU session establishment request carries the requested DNN (Requested DNN).
  • the AMF judges that the requested DNN belongs to a specific DNN (such as a pre-configured DNN or a DNN in the DNN list), or judges that the UE has not subscribed to the DNN according to the subscription data, that is, judges that the requested DNN is an invalid DNN, therefore Trigger the AMF to request the AM PCF to obtain the selected DNN corresponding to the requested DNN.
  • a specific DNN such as a pre-configured DNN or a DNN in the DNN list
  • Step 302 the AMF sends an AM policy association update request to the AM PCF. Accordingly, the AM PCF may receive the AM policy association update request.
  • the AM policy association update request carries the requested DNN, and is used to request to obtain the selected DNN (Selected DNN) corresponding to the requested DNN.
  • the AM policy association update request is also used to request to acquire the AM policy and/or the UE policy.
  • Step 303 the AM PCF sends an AM policy association update response to the AMF. Accordingly, the AMF may receive the AM policy association update response.
  • the AM policy association update response carries the selected DNN.
  • the AM policy and/or the UE policy are also carried.
  • Step 304 the AMF sends a PDU session context establishment request to the SMF. Accordingly, the SMF can receive the PDU session context establishment request.
  • the PDU session context establishment request carries the requested DNN and the selected DNN.
  • the PDU session context establishment request carries the requested DNN because the SMF needs to carry the requested DNN in the PDU session establishment response in step 305 to inform the UE that the network side has successfully established a PDU session between the UE and the requested DNN. .
  • the SMF After the SMF obtains the selected DNN, it can obtain the subscription data of the UE under the selected DNN from the UDM based on the selected DNN.
  • Step 305 the SMF sends a PDU session establishment response to the UE. Accordingly, the UE can receive the PDU session establishment response.
  • the PDU session establishment response carries the requested DNN to inform the UE that the network side has successfully established the PDU session between the UE and the requested DNN.
  • the establishment of a PDU session from the UE to the DNN is implemented for the UE.
  • the DNN requested by the UE belongs to an expired or invalid DNN, and the network side actually establishes a PDU session between the UE and the selected DNN (that is, the upgraded DNN) for the UE.
  • the side only informs the UE that the PDU session between the UE and the requested DNN is successfully established. This solution ensures that the UE that fails to update the DNN configuration information in time can normally establish a PDU session.
  • the embodiment corresponding to FIG. 3 also has the following problems, including:
  • the SMF will also select the SM PCF for the UE to provide a session management policy (SM policy).
  • SM policy session management policy
  • the SMF provides the session information to the SM PCF, and then the SM PCF registers the binding information with the BSF, and the binding information includes the correspondence between the SM PCF identifier (ie, the SM PCF ID) and the session information.
  • the session information includes the selected DNN and the address of the UE (which may be the IP address of the UE or a medium access control (MAC) address), and optionally, the session information also includes SUPI, GPSI or S-NSSAI at least one of.
  • the AF determines that a policy authorization request needs to be initiated to the SM PCF
  • the AF sends a query request to the BSF, where the query request carries the address and DNN of the UE, and then the BSF obtains the corresponding SM PCF identifier based on the address and DNN of the UE.
  • the DNN in the AF may be pre-configured or received from the UE through a user plane message, and the DNN may be the requested DNN or the selected DNN.
  • the BSF When the query request sent by the AF to the BSF carries the address of the UE and the requested DNN, the BSF will not be able to provide the SM PCF identifier, because when the SM PCF registers the binding information with the BSF, the registered session information is selected DNNs. As a result, the AF cannot obtain the SM PCF identity serving the UE from the BSF.
  • Question 2 how does the SM PCF perform differentiated policy control based on the Requested DNN actually requested by the UE:
  • the operator may configure a special DNN based on the application granularity, and the core The network performs differentiated policy control based on the configured DNN.
  • this mechanism requires the operator to open an account for the DNN in the UDM and configure the subscription data, so that the SMF can obtain the subscription data from the UDM based on the DNN.
  • a simplified solution is based on the extension of the existing DNN Replacement mechanism, that is, only the Selected DNN needs to be opened in the UDM, and multiple Requested DNNs before mapping are configured through the user routing selection policy (UE Routing Selection Policy, URSP).
  • UE Routing Selection Policy URSP
  • the multiple Requested DNNs may be mapped to the same Selected DNN.
  • the AMF receives a PDU session establishment request carrying a special DNN, it can initiate a DNN replacement request to the AM PCF based on the event subscription or local configuration information issued by the AM PCF, and receive the replaced Selected DNN from the AM PCF.
  • the SM PCF in the existing mechanism is responsible for executing session management policy decisions, and in the DNN replacement mechanism, the SM PCF does not receive the Requested DNN actually requested by the UE, so it cannot execute differentiated policy decisions based on the actually requested Requested DNN.
  • the present application provides a communication method for solving the above-mentioned problems.
  • the first PCF in this method can also be called SM PCF
  • the second PCF can also be called AM PCF
  • the first DNN can also be called the requested DNN, the DNN before replacement or the DNN before upgrading
  • the second DNN may also be referred to as the selected DNN, the replaced DNN, or the upgraded DNN.
  • the method includes the following steps:
  • Step 401a the first PCF obtains the first DNN and the second DNN.
  • the first DNN is the DNN before the replacement requested by the UE
  • the second DNN is the DNN after the replacement corresponding to the first DNN.
  • Step 402a the first PCF generates a Policy and Charging Control (PCC) rule according to the first DNN and the second DNN.
  • PCC Policy and Charging Control
  • the first PCF can obtain the first DNN and the second DNN at the same time, and generate PCC rules according to the first DNN and the second DNN, thereby implementing differentiated policy control based on the first DNN actually requested by the UE. Therefore, the above-mentioned problem 2 can be solved.
  • the first PCF generates PCC rules according to the first DNN and the second DNN, which may be: Bit Rate, session AMBR), subscribed (subscribed) 5G QoS identifier (5G QoS Identifier, 5QI) or one or more of Allocation and Retention Priority (ARP)) to generate PCC rules.
  • the first DNN and the second DNN may be: Bit Rate, session AMBR), subscribed (subscribed) 5G QoS identifier (5G QoS Identifier, 5QI) or one or more of Allocation and Retention Priority (ARP)
  • the method for the first PCF to obtain the first DNN and the second DNN includes but is not limited to:
  • the first PCF receives a policy association establishment request from the SMF, where the policy association establishment request carries the first DNN and the second DNN.
  • the first PCF receives a policy association establishment request from the SMF, the policy association establishment request carries the second DNN, and the first PCF determines that the policy association establishment request carries the replaced DNN, and sends a request message to the second PCF , the request message carries the second DNN, and the request message is used to request the DNN before replacement corresponding to the second DNN, and then the second PCF obtains the first DNN corresponding to the second DNN, and sends the first DNN to the first PCF. That is, the first PCF obtains the second DNN from the SMF, and obtains the first DNN from the second PCF.
  • the method for the first PCF to determine that the policy association establishment request carries the replaced DNN may be, for example, the second PCF determines that the second DNN is the replaced DNN according to the name or character string of the second DNN. Based on this method, by determining that the received DNN is the replaced DNN to trigger the action of acquiring the DNN before the replacement, differentiated policy control can be realized.
  • the method for the second PCF to acquire the first DNN corresponding to the second DNN may be, for example: before the first PCF sends a request message to the second PCF, the second PCF receives a policy association update request from the AMF, and the policy association update
  • the request carries the first DNN, the mapping relationship between the first DNN and the second DNN locally configured by the second PCF, obtains the second DNN corresponding to the first DNN and carries the second DNN in the policy association update response and sends it to the AMF, and at the same time
  • a replacement record is generated, and the replacement record includes a time stamp, and the time stamp is used to indicate the time information of acquiring the second DNN according to the first DNN.
  • the second PCF receives the above request message from the first PCF, it obtains the first DNN according to the timestamp and the second DNN.
  • the first PCF may also send a registration request to the BSF, where the registration request carries the identity of the first PCF and session information, where the session information includes the addresses of the first DNN, the second DNN and the UE, and the registration request is used for A request is made to establish a mapping relationship between the identifier of the first PCF and the session information.
  • the BSF establishes a mapping relationship between the identifier of the first PCF and the session information.
  • the BSF when the BSF receives a query request from the AF, and the query request carries the address of the UE and the first DNN, the BSF sends the identifier of the first PCF corresponding to the address of the UE and the first DNN to the AF according to the mapping relationship.
  • the BSF when the AF requests the BSF to acquire PCF information based on the address of the first DNN and the UE, the BSF can determine the corresponding PCF information based on the above-mentioned mapping relationship, thereby solving the above-mentioned problem 1.
  • the present application provides a communication method for solving the above-mentioned problems.
  • the first PCF in this method can also be called SM PCF
  • the second PCF can also be called AM PCF
  • the first DNN can also be called the requested DNN, the DNN before replacement or the DNN before upgrading
  • the second DNN may also be referred to as the selected DNN, the replaced DNN, or the upgraded DNN.
  • the method includes the following steps:
  • Step 401b the first PCF acquires the first DNN.
  • the first DNN is the DNN before replacement requested by the UE.
  • Step 402b the first PCF generates a PCC rule according to the first DNN.
  • the first PCF can acquire the first DNN, and generate PCC rules according to the first DNN, thereby implementing differentiated policy control based on the first DNN actually requested by the UE. Therefore, the above-mentioned problem 2 can be solved.
  • the method for obtaining the first DNN by the first PCF includes but is not limited to:
  • the first PCF receives a policy association establishment request from the SMF, where the policy association establishment request carries the first DNN.
  • the first PCF receives a policy association establishment request from the SMF, the policy association establishment request carries the second DNN, the second DNN is a replaced DNN corresponding to the first DNN, and the first PCF determines that the policy association establishment request carries is the replaced DNN, then send a request message to the second PCF, the request message carries the second DNN, the request message is used to request the DNN before the replacement corresponding to the second DNN, and then the second PCF obtains the first DNN corresponding to the second DNN.
  • a DNN and send the first DNN to the first PCF. That is, the first PCF obtains the first DNN from the second PCF.
  • the method for the first PCF to determine that the policy association establishment request carries the replaced DNN may be, for example: the second PCF determines that the second DNN is the replaced DNN according to the name or character string of the second DNN. Based on this method, by determining that the received DNN is the replaced DNN to trigger the action of acquiring the DNN before the replacement, differentiated policy control can be realized.
  • the method for the second PCF to acquire the first DNN corresponding to the second DNN may be, for example: before the first PCF sends a request message to the second PCF, the second PCF receives a policy association update request from the AMF, and the policy association update
  • the request carries the first DNN, the mapping relationship between the first DNN and the second DNN locally configured by the second PCF, obtains the second DNN corresponding to the first DNN and carries the second DNN in the policy association update response and sends it to the AMF, and at the same time
  • a replacement record is generated, and the replacement record includes a time stamp, and the time stamp is used to indicate the time information of acquiring the second DNN according to the first DNN.
  • the second PCF receives the above request message from the first PCF, it obtains the first DNN according to the timestamp and the second DNN.
  • the first PCF may also send a registration request to the BSF, where the registration request carries the identity of the first PCF and session information, where the session information includes the addresses of the first DNN and the UE, and the registration request is used to request the establishment of the first PCF.
  • the BSF establishes a mapping relationship between the identifier of the first PCF and the session information.
  • the BSF receives a query request from the AF, and the query request carries the address of the UE and the first DNN, the BSF sends the identifier of the first PCF corresponding to the address of the UE and the first DNN to the AF according to the mapping relationship.
  • the BSF can determine the corresponding PCF information based on the above-mentioned mapping relationship, thereby solving the above-mentioned problem 1.
  • FIGS. 4( a ) and 4 ( b ) The embodiments corresponding to the above-mentioned FIGS. 4( a ) and 4 ( b ) will be described in detail below with reference to FIGS. 5 to 6 .
  • the requested DNN may also be referred to as the first DNN, the DNN before replacement or the DNN before upgrading, and the selected DNN may also be referred to as the second DNN, DNN after replacement or DNN after upgrading.
  • another communication method provided by an embodiment of the present application includes the following steps:
  • Step 500 URSP policy configuration and DNN replacement event subscription.
  • AM PCF subscribes to AMF for DNN replacement events, that is, subscribes to AMF: when AMF receives a specific DNN, it requests AM PCF to obtain the selected DNN.
  • the specific DNN can be provided by the AM PCF to the AMF.
  • the AM PCF sends a DNN list to the AMF, which contains one or more specific DNNs.
  • the AMF is triggered to request the AM PCF to obtain the selected DNN corresponding to the DNN.
  • a specific DNN can also be pre-configured on the AMF.
  • the AMF is triggered to request the AM PCF to obtain the selected DNN corresponding to the DNN.
  • the AMF determines that the currently requested DNN does not appear in the subscription DNN list, and then triggers a request to the AM PCF to obtain the selected DNN corresponding to the DNN.
  • the AM PCF can also configure the corresponding URSP policy to the UE via the AMF in the registration process, so that the UE uses a specific DNN to initiate the corresponding service according to the URSP policy.
  • Step 501 the UE sends a PDU session establishment request to the AMF. Accordingly, the AMF may receive the PDU session establishment request.
  • the UE initiates a PDU session establishment request corresponding to the requested DNN (Requested DNN) based on the local configuration or the URSP policy, and the PDU session establishment request carries the requested DNN.
  • the requested DNN Requested DNN
  • the AMF judges that the requested DNN belongs to a specific DNN (such as a pre-configured DNN or a DNN in the DNN list), or judges that the UE has not subscribed to the DNN according to the subscription data, that is, judges that the requested DNN is an invalid DNN, therefore Trigger the AMF to request the AM PCF to obtain the selected DNN corresponding to the requested DNN.
  • a specific DNN such as a pre-configured DNN or a DNN in the DNN list
  • Step 502 the AMF sends an AM policy association update request to the AM PCF. Accordingly, the AM PCF may receive the AM policy association update request.
  • the AM policy association update request carries the requested DNN, and is used to request to obtain the selected DNN (Selected DNN) corresponding to the requested DNN.
  • the AM policy association update request is also used to request to acquire the AM policy and/or the UE policy.
  • Step 503 the AM PCF sends an AM policy association update response to the AMF. Accordingly, the AMF may receive the AM policy association update response.
  • the AM policy association update response carries the selected DNN.
  • the AM policy and/or the UE policy are also carried.
  • Step 504 the AMF sends a PDU session context establishment request to the SMF. Accordingly, the SMF can receive the PDU session context establishment request.
  • the PDU session context establishment request carries the requested DNN and the selected DNN.
  • the PDU session context establishment request carries the requested DNN because the SMF needs to carry the requested DNN in the PDU session establishment response in step 305 to inform the UE that the network side has successfully established a PDU session between the UE and the requested DNN. .
  • the SMF After the SMF obtains the selected DNN, it can obtain the subscription data of the UE under the selected DNN from the UDM based on the selected DNN.
  • the PDU session context establishment request may also carry a user identifier (eg, SUPI, GPSI).
  • a user identifier eg, SUPI, GPSI.
  • Step 505 the SMF sends an SM policy association establishment request to the SM PCF. Accordingly, the SM PCF may receive the SM policy association establishment request.
  • the SMF executes the SM PCF selection process, selects an SM PCF that supports providing services for the PDU session, and sends an SM policy association establishment request to the selected SM PCF for requesting to obtain a session management policy (SM policy).
  • SM policy session management policy
  • the SM policy association establishment request carries the requested DNN (that is, the Requested DNN actually requested by the UE) and the selected DNN (that is, the replaced Selected DNN).
  • the SM policy association establishment request may also carry one or more of a user identity (such as SUPI, GPSI), an address of the UE (such as an IP address or a MAC address), or S-NSSAI.
  • the address of the UE may be allocated by the SMF for the UE.
  • Step 506 the SM PCF executes the policy decision.
  • the SM PCF executes the policy decision, for example, the SMF may generate the PCC rule according to the requested DNN and the selected DNN, or generate the PCC rule according to the requested DNN. And send the generated PCC rules to SMF for execution. Based on the generation method of the PCC rule, the above-mentioned problem 2 can be solved, that is, the SM PCF can perform differentiated policy control based on the Requested DNN actually requested by the UE.
  • the operator configures video on the network side to provide basic service guarantee.
  • operators also allow users to subscribe to acceleration services corresponding to special applications in the form of payment.
  • applications such as iQiyi, Tencent, and Youku Video are configured with QoS parameters of different acceleration levels.
  • the acceleration services of these three applications are respectively It is represented by video-1, video-2, and video-3.
  • the video here can be regarded as the Selected DNN described above, and video-1, video-2, and video-3 can be regarded as the Requested DNN described above.
  • the mapping relationship between video and video-1, video-2, and video-3 is configured on the AM PCF, and video-1, video-2, and video-3 are provided to the UE, and subsequent UEs can be based on video-1, video-2 or video-3 sends a PDU session establishment request.
  • the PDU session establishment request in the above step 501 carries video-1
  • the SM PCF can receive video-1 and video, so that the SM PCF generates PCC rules based on video-1, or based on video-1 and video, This policy rule can provide accelerated QoS guarantee.
  • Step 507 the SM PCF sends an SM policy association establishment response to the SMF. Accordingly, the SMF may receive the SM policy association establishment response.
  • the SM policy association establishment response carries the above PCC rule.
  • Step 508 the SMF sends a PDU session establishment response to the UE. Accordingly, the UE can receive the PDU session establishment response.
  • the PDU session establishment response carries the requested DNN to inform the UE that the network side has successfully established the PDU session between the UE and the requested DNN.
  • the SMF also performs subsequent user plane link establishment and resource reservation processes, which may refer to the prior art and will not be repeated here.
  • Step 509 the SM PCF sends a binding information registration request to the BSF. Accordingly, the BSF can receive the binding information registration request.
  • the binding information registration request carries the SM PCF identifier and session information.
  • the session information includes the selected DNN, the requested DNN, and the address of the UE (which may be the IP address or MAC address of the UE).
  • the session information also includes At least one of SUPI, GPSI or S-NSSAI.
  • Step 510 the BSF sends a binding information registration response to the SM PCF. Accordingly, the SM PCF can receive the binding information registration response.
  • the binding information registration response is used to indicate the success or failure of the binding information registration.
  • Step 511 the AF sends a query request to the BSF. Accordingly, the BSF can receive the query request.
  • the AF Before the AF initiates an initial policy authorization request to the SM PCF, it needs to go through the PCF discovery process to search for the SM PCF-related information of the PDU session serving the UE.
  • the search request sent by the AF to the BSF may carry the address of the DNN and the UE, and the DNN may be the requested DNN or the selected DNN.
  • the query request is used to request to obtain the SM PCF identifier corresponding to the address of the DNN and the UE.
  • the requested DNN on the AF may be pre-configured on the AF, or acquired from the UE side via a user plane channel.
  • the selected DNN on the AF may be pre-configured on the AF.
  • the address of the UE on the AF may be carried when the UE sends a request to the AF.
  • the service request may carry the address of the UE, and optionally, the service request may also carry the requested DNN, so as to trigger the AF to search for the The SM PCF served by the PDU session.
  • Step 512 the BSF sends the PCF information to the AF. Accordingly, the AF can receive the PCF information.
  • the BSF determines the corresponding SM PCF identifier based on the parameters carried in the query request and the locally stored binding information. That is, the BSF determines the corresponding SM PCF identity according to the addresses of the DNN and the UE in the query request, and the mapping relationship between the SM PCF identity and the session information.
  • the SM PCF identifier may be SM PCF address information (such as IP address, domain name address) or a unique identifier.
  • Step 513 the AF sends a policy authorization request to the SM PCF. Accordingly, the SM PCF may receive the policy authorization request.
  • the AF Based on the received SM PCF identifier, the AF sends a policy authorization request to the SM PCF, which carries information such as the address of the UE and the requested DNN. After receiving the information, the SM PCF performs session binding according to the local context record, that is, associates the policy authorization request with the PDU session, and issues policy rules to the AF for the session based on the policy authorization request.
  • the policy authorization request is to trigger the SM PCF to provide corresponding QoS guarantees for specific service flows, such as providing scheduling priority corresponding to QoS Class Identifier (QCI) for IP Multimedia Subsystem (IMS) voice service flows level, packet loss rate, delay and bandwidth allocation to ensure user experience.
  • QCI QoS Class Identifier
  • IMS IP Multimedia Subsystem
  • the AF may also carry service flow description information, the maximum requested bandwidth (Max-Requested-Bandwidth), and the AF application ID (AF Application ID) in the policy authorization request.
  • One or more of the SM PCF are used to generate corresponding policy rules for the service flow.
  • the SM PCF includes the received requested DNN (Requested DNN) and the selected DNN (Selected DNN) in the binding information sent to the BSF, so that the AF can be based on the Requested DNN or Selected DNN.
  • the DNN finds the SM PCF identifier that provides services for the UE, and can then request the SM PCF to obtain the policy, which solves the above problem 1.
  • the SM PCF can perform differentiated policy control based on the requested DNN, or based on the requested DNN and the selected DNN, and on the other hand, it is realized that the AF can search for the DNN based on the requested DNN or the selected DNN.
  • the UE provides the SM PCF identifier of the service, thereby improving the communication efficiency and communication quality in the DNN replacement scenario.
  • the main difference between the embodiment corresponding to FIG. 6 and the embodiment corresponding to FIG. 5 is that: in the embodiment corresponding to FIG. 6 , the SM PCF is Obtaining the Requested DNN from the AM PCF based on the independent signaling message helps to reduce the process changes to the AMF and SMF in the existing network.
  • the method includes the following steps:
  • Steps 600 to 602 are the same as steps 500 to 502 in the embodiment corresponding to FIG. 5 , and reference may be made to the foregoing description.
  • Step 603 the AM PCF sends an AM policy association update response to the AMF. Accordingly, the AMF may receive the AM policy association update response.
  • the AM PCF performs the mapping action of the requested DNN to the selected DNN according to the operator configuration information, and saves the replacement record locally.
  • the replacement record may contain timestamp information.
  • the AM PCF then sends the AM Policy Association Update Response to the AMF, which carries the selected DNN.
  • the AM policy and/or the UE policy are also carried.
  • Step 604 is the same as step 504 in the embodiment corresponding to FIG. 5 , and reference may be made to the foregoing description.
  • Step 605 the SMF sends an SM policy association establishment request to the SM PCF. Accordingly, the SM PCF may receive the SM policy association establishment request.
  • the SMF executes the SM PCF selection process, selects an SM PCF that supports providing services for the PDU session, and sends an SM policy association establishment request to the selected SM PCF for requesting to obtain a session management policy (SM policy).
  • SM policy session management policy
  • the SM policy association establishment request carries the selected DNN (ie, the replaced Selected DNN).
  • the SM policy association establishment request may also carry one or more of a user identity (such as SUPI, GPSI), an address of the UE (such as an IP address or a MAC address), or S-NSSAI.
  • the address of the UE may be allocated by the SMF for the UE.
  • Step 606 the SM PCF sends a request message to the AM PCF. Accordingly, the AM PCF can receive the request message.
  • the SM PCF determines that the DNN received from the SMF is the selected DNN, and then initiates a DNN mapping query request to the AM PCF, that is, sends a request message to the AM PCF, which carries the selected DNN.
  • Step 607 the AM PCF sends the requested DNN to the SM PCF. Accordingly, the SM PCF can receive the requested DNN.
  • the AM PCF After the AM PCF receives the request message, it can send the recently replaced requested DNN to the SM PCF according to the DNN replacement record previously saved for the SM PCF to perform subsequent actions.
  • the AM PCF may receive AM policy association update requests corresponding to different PDU sessions of the same UE or AM policy association update requests corresponding to different UEs, so that the AM PCF may perform multiple DNN replacement operations,
  • the DNN operations performed by AM PCF are as follows:
  • DNN-4 is replaced by DNN-6, timestamp 4 is added.
  • the AM PCF receives the request message from the SM PCF, according to the received DNN, the requested DNN in the latest DNN replacement operation is found based on the timestamp. For example, AM PCF receives DNN-5 and is closest to timestamp 3, returns DNN-3 to SM PCF, and deletes the replacement record.
  • AM PCF may also find the requested DNN corresponding to the earliest DNN replacement operation within the validity period based on the timestamp. For example, when AM PCF receives DNN-5, if it judges that the replacement record corresponding to timestamp 1 is still valid, it returns the DNN-1 and deletes the replacement record. If it determines that the replacement record corresponding to timestamp 1 is invalid and the replacement record corresponding to timestamp 2 is valid, it can return to DNN-2 and delete the replacement record.
  • Steps 608 to 615 are the same as steps 506 to 513 in the embodiment corresponding to FIG. 5 , and reference may be made to the foregoing description.
  • the SM PCF can perform differentiated policy control based on the requested DNN, or based on the requested DNN and the selected DNN, and on the other hand, it is realized that the AF can search for the DNN based on the requested DNN or the selected DNN.
  • the UE provides the SM PCF identifier of the service, thereby improving the communication efficiency and communication quality in the DNN replacement scenario.
  • each network element that implements the above includes corresponding hardware structures and/or software modules for executing each function.
  • the present invention can be implemented in hardware or a combination of hardware and computer software in conjunction with the units and algorithm steps of each example described in the embodiments disclosed herein. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of the present invention.
  • the steps or operations corresponding to the first policy control network element may also be implemented by components (such as chips or circuits) configured in the first policy control network element, and corresponding to the steps or operations implemented by the first policy control network element.
  • the steps or operations implemented by the two-policy control network element may also be implemented by components (such as chips or circuits) configured in the second policy control network element, and corresponding to the steps or operations implemented by the binding support network element, they may also be implemented by
  • the components (such as chips or circuits) that support the network element binding are implemented, and the steps or operations corresponding to the steps or operations implemented by the application function network elements may also be implemented by components (such as chips or circuits) configured in the application function network elements.
  • FIG. 7 it is a schematic diagram of a communication apparatus according to an embodiment of the present application.
  • the apparatus is used to implement each step performed by the first policy control network element, the second policy control network element, the binding support network element or the application function network element in the above embodiment.
  • the apparatus 700 includes: Transceiver unit 710 and processing unit 720.
  • the communication device is a first policy control network element or a chip for the first policy control network element:
  • the transceiver unit 710 is used to obtain the first data network name DNN and the second DNN, the first DNN is the DNN before the replacement requested by the terminal device, and the second DNN is the replaced DNN corresponding to the first DNN DNNs.
  • the processing unit 720 is configured to generate a policy charging control rule according to the first DNN and the second DNN.
  • the transceiver unit 710 configured to acquire the first DNN and the second DNN, specifically includes: being configured to receive a policy association establishment request from a session management network element, where the policy association establishment request carries the first DNN and the second DNN.
  • the transceiver unit 710 configured to acquire the first DNN and the second DNN, specifically includes: being configured to receive a policy association establishment request from a session management network element, where the policy association establishment request carries the second DNN; used to send a request message to the second policy control network element, where the request message carries the second DNN, and the request message is used to request the DNN before the replacement corresponding to the second DNN; using on receiving the first DNN from the second policy control network element.
  • the first policy control network element is a policy control network element used for session management
  • the second policy control network element is used for access and mobility management and/or for Policy control network element that provides terminal device policies.
  • the transceiver unit 710 is further configured to send a registration request to the binding support network element, where the registration request carries the identifier of the first policy control network element and session information, the session information
  • the registration request includes the address of the first DNN, the second DNN and the terminal device, and the registration request is used to request to establish a mapping relationship between the identifier of the first policy control network element and the session information.
  • the communication device is a first policy control network element or a chip for the first policy control network element:
  • the transceiver unit 710 is configured to acquire the first data network name DNN, where the first DNN is the DNN before replacement requested by the terminal device; the processing unit 720 is configured to generate a policy charging control rule according to the first DNN.
  • the transceiver unit 710 configured to acquire the first DNN, specifically includes: receiving a policy association establishment request from a session management network element, where the policy association establishment request carries the first DNN DNNs.
  • the transceiver unit 710 configured to acquire the first DNN, specifically includes: being configured to receive a policy association establishment request from a session management network element, where the policy association establishment request carries the second DNN,
  • the second DNN is a replaced DNN corresponding to the first DNN; it is used to send a request message to the second policy control network element, where the request message carries the second DNN, and the request message is used to request the DNN before replacement corresponding to the second DNN; used for receiving the first DNN from the second policy control network element.
  • the first policy control network element is a policy control network element used for session management
  • the second policy control network element is used for access and mobility management and/or for Policy control network element that provides terminal device policies.
  • the transceiver unit 710 is further configured to send a registration request to the binding support network element, where the registration request carries the identifier of the first policy control network element and session information, the session information It includes the address of the first DNN and the terminal device, and the registration request is used to request to establish a mapping relationship between the identifier of the first policy control network element and the session information.
  • the communication device is a second policy control network element or a chip for the second policy control network element:
  • the transceiver unit 710 is configured to receive a request message from the first policy control network element, where the request message carries a second data network name DNN, the second DNN is a replaced DNN corresponding to the first DNN, and the first DNN A DNN is the DNN before replacement requested by the terminal device; the first DNN is sent to the first policy control network element; the processing unit 720 is configured to acquire the first DNN according to the second DNN.
  • the transceiver unit 710 is further configured to receive a policy association update request from a mobility management network element, where the policy association update request carries the first DNN; the processing unit 720, is also used to obtain the second DNN according to the first DNN, and generate a replacement record, the replacement record includes a time stamp, and the time stamp is used to indicate the time when the second DNN is obtained according to the first DNN information; the transceiver unit 710 is further configured to send a policy association update response to the mobility management network element, where the policy association update response carries the second DNN.
  • the processing unit 720 configured to obtain the first DNN according to the second DNN, specifically includes: obtaining the first DNN according to the timestamp and the second DNN. A DNN.
  • the communication device is a binding support network element or a chip for binding a support network element:
  • the transceiver unit 710 is configured to receive a registration request from the first policy control network element, where the registration request carries the identifier of the first policy control network element and session information, where the session information includes the first data network name DNN and the terminal
  • the address of the device, the first DNN is the DNN before the replacement requested by the terminal device;
  • a query request is received from the application function network element, and the query request carries the address of the terminal device and the first DNN;
  • identification; the processing unit 720 is configured to establish a mapping relationship between the identification of the first policy control network element and the session information.
  • the session information further includes a second DNN, where the second DNN is a replaced DNN corresponding to the first DNN.
  • the above-mentioned communication device 700 may further include a storage unit, which is used to store data or instructions (also referred to as codes or programs), and each of the above-mentioned units may interact or be coupled with the storage unit to implement corresponding methods or Features.
  • the processing unit 720 may read data or instructions in the storage unit, so that the communication apparatus implements the methods in the above embodiments.
  • each unit in the above apparatus can be realized in the form of software calling through the processing element; also can all be realized in the form of hardware; some units can also be realized in the form of software calling through the processing element, and some units can be realized in the form of hardware.
  • each unit can be a separately established processing element, or can be integrated in a certain chip of the device to be implemented, and can also be stored in the memory in the form of a program, which can be called by a certain processing element of the device and execute the unit's processing.
  • each step of the above method or each of the above units may be implemented by an integrated logic circuit of hardware in the processor element or implemented in the form of software being invoked by the processing element.
  • a unit in any of the above apparatuses may be one or more integrated circuits configured to implement the above method, such as: one or more Application Specific Integrated Circuits (ASICs), or, one or more Multiple microprocessors (digital singnal processors, DSP), or, one or more field programmable gate arrays (Field Programmable Gate Array, FPGA), or a combination of at least two of these integrated circuit forms.
  • ASICs Application Specific Integrated Circuits
  • DSP digital singnal processors
  • FPGA Field Programmable Gate Array
  • FPGA Field Programmable Gate Array
  • a unit in the apparatus can be implemented in the form of a processing element scheduler
  • the processing element can be a general-purpose processor, such as a central processing unit (Central Processing Unit, CPU) or other processors that can invoke programs.
  • CPU central processing unit
  • these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip
  • the above transceiver unit 710 is an interface circuit of the device, and is used to send signals to or receive signals from other devices.
  • the transceiver unit 710 is an interface circuit used by the chip to send signals to or receive signals from other chips or devices.
  • the communication apparatus includes: a processor 810 and an interface 830 , and optionally, the communication apparatus further includes a memory 820 .
  • the interface 830 is used to enable communication with other devices.
  • the method executed by the first policy control network element, the second policy control network element, the binding support network element or the application function network element may be invoked by the processor 810 to a memory (which may be the first policy control network element, the second policy control network element, the second It is implemented by the program stored in the memory 820 in the policy control network element, the binding support network element or the application function network element, which may also be an external memory).
  • the first policy control network element, the second policy control network element, the binding support network element or the application function network element may include a processor 810, and the processor 810 executes the above method embodiments by calling a program in the memory
  • the processor here may be an integrated circuit with signal processing capability, such as a CPU.
  • the first policy control network element, the second policy control network element, the binding support network element or the application function network element may be implemented by one or more integrated circuits configured to implement the above methods. For example: one or more ASICs, or, one or more microprocessor DSPs, or, one or more FPGAs, etc., or a combination of at least two of these integrated circuit forms.
  • the above implementations may be combined.
  • the functions/implementation process of the transceiver unit 710 and the processing unit 720 in FIG. 7 may be implemented by the processor 810 in the communication apparatus 800 shown in FIG. 8 calling computer-executable instructions stored in the memory 820 .
  • the function/implementation process of the processing unit 720 in FIG. 7 may be implemented by the processor 810 in the communication apparatus 800 shown in FIG. 8 calling the computer-executed instructions stored in the memory 820, and the function of the transceiver unit 710 in FIG. 7
  • the implementation process can be implemented through the interface 830 in the communication device 800 shown in FIG. 8 .
  • At least one item (single, species) of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.
  • “Plurality" means two or more, and other quantifiers are similar.
  • the above-mentioned embodiments it may be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • software it can be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated.
  • the computer may be a general purpose computer, special purpose computer, computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center is by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that a computer can access, or a data storage device such as a server, a data center, or the like that includes an integration of one or more available media.
  • the usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media (eg, solid state disks (SSDs)), and the like.
  • a general-purpose processor may be a microprocessor, or alternatively, the general-purpose processor may be any conventional processor, controller, microcontroller, or state machine.
  • a processor may also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors in combination with a digital signal processor core, or any other similar configuration. accomplish.
  • the steps of the method or algorithm described in the embodiments of this application may be directly embedded in hardware, a software unit executed by a processor, or a combination of the two.
  • Software units can be stored in random access memory (Random Access Memory, RAM), flash memory, read-only memory (Read-Only Memory, ROM), EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM or this.
  • RAM Random Access Memory
  • ROM read-only memory
  • EPROM memory read-only memory
  • EEPROM memory electrically erasable programmable read-only memory
  • registers hard disk, removable disk, CD-ROM or this.
  • a storage medium may be coupled to the processor such that the processor may read information from, and store information in, the storage medium.
  • the storage medium can also be integrated into the processor.
  • the processor and storage medium may be provided in the ASIC.
  • the above-described functions described herein may be implemented in hardware, software, firmware, or any combination of the three. If implemented in software, the functions may be stored on, or transmitted over, a computer-readable medium in the form of one or more instructions or code.
  • Computer-readable media includes computer storage media and communication media that facilitate the transfer of a computer program from one place to another. Storage media can be any available media that a general-purpose or special-purpose computer can access.
  • Such computer-readable media may include, but are not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other device that can be used to carry or store instructions or data structures and Other media in the form of program code that can be read by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor.
  • any connection is properly defined as a computer-readable medium, for example, if software is transmitted from a website site, server or other remote source over a coaxial cable, fiber optic computer, twisted pair, digital subscriber line (DSL) Or transmitted by wireless means such as infrared, wireless, and microwave are also included in the definition of computer-readable media.
  • DSL digital subscriber line
  • the discs and magnetic discs include compact discs, laser discs, optical discs, digital versatile discs (English: Digital Versatile Disc, DVD for short), floppy discs and Blu-ray discs. Disks usually reproduce data magnetically, while Discs usually use lasers to optically reproduce data. Combinations of the above can also be included in computer readable media.
  • the functions described in this application may be implemented in hardware, software, firmware, or any combination thereof.
  • the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium.
  • Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a storage medium can be any available medium that can be accessed by a general purpose or special purpose computer.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Un procédé de communication, un premier élément de réseau de commande de politique et un système de communication sont divulgués. Le procédé comprend : un premier élément de réseau de commande de politique acquérant un premier DNN et un second DNN, le premier DNN étant un DNN demandé par un équipement terminal avant le remplacement, et le second DNN étant un DNN correspondant remplaçant le premier DNN ; et le premier élément de réseau de commande de politique générant une règle de commande de politique et de facturation selon le premier DNN et le second DNN. Sur la base de la solution ci-dessus, un premier élément de réseau de commande de politique peut simultanément acquérir un premier DNN et un second DNN, et générer une règle de commande de politique et de facturation selon le premier DNN et le second DNN, ce qui permet de réaliser une commande de politique différenciée sur la base du premier DNN réellement demandé par un équipement terminal.
PCT/CN2021/090340 2020-07-27 2021-04-27 Procédé de communication, premier élément de réseau de commande de politique et système de communication WO2022021971A1 (fr)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023151341A1 (fr) * 2022-02-11 2023-08-17 中国电信股份有限公司 Procédé, appareil et système de traitement de politique am, et dispositif et support
EP4322616A1 (fr) * 2022-08-08 2024-02-14 Vodafone Group Services Limited Procédé de routage de données d'un client d'application vers un serveur d'application par l'intermédiaire d'un réseau central d'un réseau cellulaire
WO2024031493A1 (fr) * 2022-08-10 2024-02-15 北京小米移动软件有限公司 Procédé de traitement d'informations, appareil, dispositif de communication et support de stockage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190053308A1 (en) * 2017-08-14 2019-02-14 Telefonaktiebolaget Lm Ericsson (Publ) Method And Device For Network Initiated Packet Data Unit, PDU, Session Establishment In A Telecommunication Network
CN109548137A (zh) * 2017-08-11 2019-03-29 华为技术有限公司 会话信息管理方法和装置
CN110167198A (zh) * 2018-02-14 2019-08-23 华为技术有限公司 确定协议数据单元会话服务网元的方法和装置
US20200221541A1 (en) * 2018-09-19 2020-07-09 Huawei Technologies Co., Ltd. Policy Control Method, Device, and System
CN112020104A (zh) * 2019-05-31 2020-12-01 华为技术有限公司 用于背景数据传输的方法、通信装置和通信***

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11039381B2 (en) * 2017-03-21 2021-06-15 Telefonaktiebolaget Lm Ericsson (Publ) SMF selection based on supported DNN

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109548137A (zh) * 2017-08-11 2019-03-29 华为技术有限公司 会话信息管理方法和装置
US20190053308A1 (en) * 2017-08-14 2019-02-14 Telefonaktiebolaget Lm Ericsson (Publ) Method And Device For Network Initiated Packet Data Unit, PDU, Session Establishment In A Telecommunication Network
CN110167198A (zh) * 2018-02-14 2019-08-23 华为技术有限公司 确定协议数据单元会话服务网元的方法和装置
US20200221541A1 (en) * 2018-09-19 2020-07-09 Huawei Technologies Co., Ltd. Policy Control Method, Device, and System
CN112020104A (zh) * 2019-05-31 2020-12-01 华为技术有限公司 用于背景数据传输的方法、通信装置和通信***

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HUAWEI, HISILICON: "Procedures for PDU Session establishment and Bridge based information reporting", 3GPP DRAFT; S2-1908977 TS23.502 CR1707 PROCEDURES FOR PDU SESSION ESTABLISHMENT AND BRIDGE BASED INFORMATION REPORTING_FINAL, vol. SA WG2, 4 October 2019 (2019-10-04), Split, Croatia, pages 1 - 16, XP051787405 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023151341A1 (fr) * 2022-02-11 2023-08-17 中国电信股份有限公司 Procédé, appareil et système de traitement de politique am, et dispositif et support
EP4322616A1 (fr) * 2022-08-08 2024-02-14 Vodafone Group Services Limited Procédé de routage de données d'un client d'application vers un serveur d'application par l'intermédiaire d'un réseau central d'un réseau cellulaire
WO2024031493A1 (fr) * 2022-08-10 2024-02-15 北京小米移动软件有限公司 Procédé de traitement d'informations, appareil, dispositif de communication et support de stockage

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