WO2022236646A1 - 通信方法、装置及系统、网络设备及存储介质 - Google Patents

通信方法、装置及系统、网络设备及存储介质 Download PDF

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Publication number
WO2022236646A1
WO2022236646A1 PCT/CN2021/092919 CN2021092919W WO2022236646A1 WO 2022236646 A1 WO2022236646 A1 WO 2022236646A1 CN 2021092919 W CN2021092919 W CN 2021092919W WO 2022236646 A1 WO2022236646 A1 WO 2022236646A1
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Prior art keywords
network element
control plane
plane network
policy
data rate
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PCT/CN2021/092919
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English (en)
French (fr)
Inventor
于磊
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
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Priority to PCT/CN2021/092919 priority Critical patent/WO2022236646A1/zh
Priority to ES21941222T priority patent/ES3065874T3/es
Priority to US18/289,874 priority patent/US20240244513A1/en
Priority to CN202180001508.1A priority patent/CN115669053B/zh
Priority to EP21941222.8A priority patent/EP4340406B1/en
Publication of WO2022236646A1 publication Critical patent/WO2022236646A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements specially adapted for data communications, e.g. authentication, authorisation and accounting [AAA] framework
    • H04L12/1403—Architecture for metering, charging or billing
    • H04L12/1407—Policy-and-charging control [PCC] architecture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0894—Policy-based network configuration management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0896—Bandwidth or capacity management, i.e. automatically increasing or decreasing capacities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/40—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks using virtualisation of network functions or resources, e.g. SDN or NFV entities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/20—Traffic policing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/66—Policy and charging system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/80—Rating or billing plans; Tariff determination aspects
    • H04M15/8016—Rating or billing plans; Tariff determination aspects based on quality of service [QoS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0268—Traffic management, e.g. flow control or congestion control using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
    • 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
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H04W8/14—Mobility data transfer between corresponding nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0803—Configuration setting
    • H04L41/0813—Configuration setting characterised by the conditions triggering a change of settings
    • H04L41/082—Configuration setting characterised by the conditions triggering a change of settings the condition being updates or upgrades of network functionality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/50—Network service management, e.g. ensuring proper service fulfilment according to agreements
    • H04L41/5003—Managing SLA; Interaction between SLA and QoS
    • H04L41/5019—Ensuring fulfilment of SLA
    • H04L41/5022—Ensuring fulfilment of SLA by giving priorities, e.g. assigning classes of service

Definitions

  • the present disclosure relates to a communication method, device and system, a network device and a storage medium.
  • Network slicing can provide complete network functions, such as radio access network functions, core network functions, and IP Multimedia System (IMS, IP Multimedia Subsystem) functions.
  • a network can support one or more network slices.
  • Network slices can provide different promised services and are dedicated to users. Slices of the same service or slice but with different slice identifiers may have different Single Network Slice Selection Assistance Information (S-NSSAI, Single Network Slice Selection Assistance Information).
  • S-NSSAI Single Network Slice Selection Assistance Information
  • Multiple network slices deployed by an operator can provide exactly the same functionality but target different groups of UEs.
  • Such network slices may have different S-NSSAIs for the same slice or different slice identifiers for the same service type because they provide different committed services and/or are dedicated to customers.
  • the selection of a group of network slice instances of the UE is usually performed by the first contacted Access and Mobility Management Function (AMF, Access and Mobility Management Function) in the registration process by interacting with the Network Slice Selection Function (NSSF, Network Slice Selection Function). ) triggers, and may cause changes to the AMF.
  • AMF Access and Mobility Management Function
  • NSSF Network Slice Selection Function
  • Each PLMN, PDU session belongs to one and only one specific network slice instance. Although different network slice instances may have slice-specific PDU sessions using the same DNN, different network slice instances do not share PDU sessions.
  • the source AMF selects the target AMF by interacting with the network registration function (NRF, NF Repository Function).
  • the network slice type (NEST, Generic Network Slice Template) is applied to network slices even when supported by multiple network slice instances.
  • the general network slice template (GST, Network Slice Type) defines the attributes supported by network slices. For example, the maximum downlink throughput defines the maximum data rate supported by the network slice in the downlink, while the maximum uplink throughput defines the maximum data rate supported by the network slice in the uplink.
  • the Public Land Mobile Network can be configured to support slice data rate limitation.
  • the 5G network needs to dynamically adjust the slice uplink and downlink UL and DL bandwidth (aggregated traffic) to meet the network control requirements. For example, when this data rate limit is reached, fairness between UE data rates in the PLMN is triggered.
  • the key question is how to adjust the per-UE data rate limit applicable to GBR and non-GBR traffic, and how to adjust the total number of UEs operating in the slice. That is to say, how to realize dynamic adjustment to meet the data rate limitation of network slice UL and DL is the key requirement and problem of the network slice function of 5G system.
  • the embodiments of the present disclosure provide a communication method, device and system, a network device and a storage medium.
  • a communication method including:
  • the first control plane network element executes the SM policy association modification process initiated by itself, so as to notify the second control plane network element of the modification of the policy;
  • the first control plane network element uses the actually used data rate as an input for policy decision, and reduces the session aggregation maximum bit rate Session-AMBR.
  • the method also includes:
  • the first control plane network element uses the ratio of the actually used data rate to the accumulated data rate and the service data flow SDF maximum bit rate MBR as an input for the policy decision of the first control plane network element.
  • the method also includes:
  • the first control plane network element uses user categories as input for policy decisions of the first control plane network element.
  • the method also includes:
  • the first control plane network element uses application-based preferences as input for policy decisions of the first control plane network element.
  • the method also includes:
  • the first control plane network element uses user category and application-based preferences as input for policy decisions of the first control plane network element.
  • the first control plane network element reduces the Session-AMBR, including:
  • the first control plane network element sends a first indication message to the second control plane network element, where the first indication message is used to indicate an SM policy association modification that reduces Session-AMBR.
  • the first indication message includes at least one of the following information: S-NSSAI identifier and authorized Session-AMBR.
  • the method also includes:
  • the first control plane network element uses the analysis information provided by the network data analysis function NWDAF network element as an input for the policy decision of the first control plane network element.
  • a communication method comprising:
  • the first control plane network element executes the SM policy association modification process initiated by itself, so as to notify the second control plane network element of the modification of the policy;
  • the first control plane network element updates the policy and charging control PCC rules, and uses the actually used data rate as an input for the policy decision of the first control plane network element.
  • the method also includes:
  • the first control plane network element uses the ratio of the actually used data rate of the slice to the accumulated data rate (GBR data flow) and the maximum bit rate MBR (Non-GBR data flow) of the service data flow SDF as the The input of the policy decision of the first control plane network element.
  • the method also includes:
  • the first control plane network element uses user categories as input for policy decisions of the first control plane network element.
  • the method also includes:
  • the first control plane network element uses application-based preferences as input for policy decisions of the first control plane network element.
  • the method also includes:
  • the first control plane network element uses user category and application-based preferences as input for policy decisions of the first control plane network element.
  • the notifying the second control plane network element of the modification of the policy includes:
  • the first control plane network element sends a first indication message to the second control plane network element, where the first indication message is used to indicate to reduce the MBR of the related QoS flow.
  • the first indication message includes at least one of the following information: an S-NSSAI identifier, an MBR corresponding to the SDF, and a guaranteed bit rate (GBR).
  • GRR guaranteed bit rate
  • the method also includes:
  • the first control plane network element uses the analysis information provided by the NWDAF network element as input for policy decisions of the first control plane network element.
  • a communication method comprising:
  • the second control plane network element receives a first indication message indicating that the data rate of the S-NSSAI reaches the threshold from the first control plane network element;
  • the first indication message includes at least one of the following information: S-NSSAI identifier and authorized Session-AMBR.
  • the method also includes:
  • the second control plane network element initiates a packet data unit PDU session modification process to change the Session-AMBR.
  • a communication method comprising:
  • the second control plane network element receives a first indication message indicating that the data rate of the S-NSSAI reaches the threshold from the first control plane network element;
  • the first indication message includes at least one of the following information: S-NSSAI identifier, corresponding MBR and GBR of SDF.
  • the method also includes:
  • the second control plane network element executes the authorized QoS of the service data flow according to the PCC rule.
  • a communication method comprising:
  • the first control plane network element executes the access and mobility AM policy association modification process initiated by itself, so as to notify the third control plane network element of the modification of the policy;
  • the first control plane network element reduces the user slice aggregation maximum bit rate UE-Slice-AMBR, and uses the actually used data rate as the first control plane network element input to policy decisions.
  • the method also includes:
  • the first control plane network element will use the ratio of the actually used data rate to the accumulated data rate and the MBR of the SDF as an input for the policy decision of the first control plane network element.
  • the method also includes:
  • the first control plane network element uses user categories as input for policy decisions of the first control plane network element.
  • the method also includes:
  • the first control plane network element uses application-based preferences as input for policy decisions of the first control plane network element.
  • the method also includes:
  • the first control plane network element uses user category and application-based preferences as input for policy decisions of the first control plane network element.
  • the first control plane network element reduces the UE-Slice-AMBR, including:
  • the first control plane network element sends a second indication message to the third control plane network element, where the second indication message is used to indicate an AM policy association modification that reduces UE-Slice-AMBR.
  • the second indication message includes at least one of the following information: S-NSSAI identifier, authorized UE-Slice-AMBR.
  • the method also includes:
  • the first control plane network element uses the analysis information provided by the NWDAF network element as input for policy decisions of the first control plane network element.
  • a communication method comprising:
  • the second indication message includes at least one of the following information: S-NSSAI identifier, authorized UE-Slice-AMBR.
  • the method also includes:
  • the third control plane network element initiates a PDU session modification process to change the UE-Slice-AMBR.
  • a communication device comprising:
  • the sending unit is configured to, in response to the triggering of the policy decision, execute the SM policy association modification process initiated by the first control plane network element, so as to notify the second control plane network element of the modification of the policy;
  • the processing unit is configured to use the actually used data rate as an input for a policy decision, and reduce the Session-AMBR maximum bit rate if the data rate of the slice reaches a threshold.
  • the processing unit is further configured to:
  • the analysis information provided by the network data analysis function NWDAF network element is used as an input for the policy decision of the first control plane network element.
  • the sending unit is further configured to:
  • a communication device comprising:
  • the sending unit is configured to, in response to the triggering of the policy decision, execute the SM policy association modification process initiated by the first control plane network element, so as to notify the second control plane network element of the modification of the policy;
  • the processing unit is configured to update the PCC rule by the first control plane network element if the data rate of the S-NSSAI reaches the threshold, and use the actually used data rate as an input for the policy decision of the first control plane network element.
  • the processing unit is further configured to:
  • the analysis information provided by the network data analysis function NWDAF network element is used as an input for the policy decision of the first control plane network element.
  • the sending unit is further configured to:
  • a communication device comprising:
  • the receiving unit is configured to receive a first indication message indicating that the data rate of the S-NSSAI reaches a threshold from the first control plane network element;
  • a processing unit configured to change the Session-AMBR in response to the first indication message.
  • the first indication message includes at least one of the following information: S-NSSAI identifier and authorized Session-AMBR.
  • a communication device comprising:
  • the receiving unit is configured to receive a first indication message indicating that the data rate of the S-NSSAI reaches a threshold from the first control plane network element;
  • the processing unit is configured to change the corresponding MBR and GBR of the SDF in response to the first indication message.
  • the first indication message includes at least one of the following information: S-NSSAI identifier, corresponding MBR and GBR of SDF.
  • the processing unit is further configured to:
  • a communication device comprising:
  • the sending unit is configured to, in response to the trigger of the policy decision, execute the access and mobility AM policy association modification process initiated by the first control plane network element, so as to notify the third control plane network element of the modification of the policy;
  • a processing unit configured to reduce the maximum bit rate UE-Slice-AMBR for the user slice aggregation by the first control plane network element if the data rate of the S-NSSAI reaches a threshold, and use the actually used data rate as the first An input for a policy decision of a control plane network element.
  • the processing unit is further configured to:
  • the analysis information provided by the NWDAF network element is used as input for the policy decision of the first control plane network element.
  • the sending unit is further configured to:
  • a communication device comprising:
  • the receiving unit is configured to receive a second indication message indicating that the data rate of the S-NSSAI reaches the threshold from the first control plane network element;
  • a processing unit configured to change UE-Slice-AMBR in response to the second indication message.
  • the second indication message includes at least one of the following information: S-NSSAI identifier, authorized UE-Slice-AMBR.
  • the device also includes:
  • the initiating unit is configured to initiate a PDU session modification process to change the UE-Slice-AMBR.
  • a first network device including a processor, a transceiver, a memory, and an executable program stored on the memory and capable of being run by the processor, and the processor runs the The steps of the communication method are performed when the program is executable.
  • a second network device including a processor, a transceiver, a memory, and an executable program stored on the memory and capable of being run by the processor, and the processor runs the The steps of the communication method according to any one of claims 17 to 21 are executed when the executable program is executed.
  • a third network device including a processor, a transceiver, a memory, and an executable program stored on the memory and capable of being run by the processor, and the processor runs the The steps of the communication method according to any one of claims 30 to 32 are executed when the executable program is executed.
  • a communication system at least including: a first control plane network element and a second control plane network element; wherein the first control plane network element is configured to initiate SM A policy association modification process, so that when the data rate of the S-NSSAI reaches a threshold, the authorized Session-AMBR is used to notify the second control plane network element of policy modification; the second control plane network element is configured to confirm the first A control plane network element requests and starts the PDU session modification process to change the Session-AMBR.
  • a communication system at least including: a first control plane network element and a second control plane network element; wherein, the first control plane network element is configured such that the PCF is Configured to initiate an SM policy association modification process, so that when the data rate of the S-NSSAI reaches a threshold, the SDF corresponding MBR and GBR are used to notify the modification of the second control plane network element policy; the second control plane network element is configured In order to confirm the request of the first control plane network element, and enforce the authorized QoS of the service data flow according to the PCC rule.
  • a storage medium on which an executable program is stored, and when the executable program is executed by a processor, the steps of the communication method are implemented.
  • the communication method, device and system, network equipment and storage medium of the embodiments of the present disclosure can initiate the PCF or other network elements to determine the slice bandwidth control by using the actual data rate as input according to the transmission rate of the current network slice, Slice bandwidth control can be performed precisely.
  • the embodiments of the present disclosure can better provide better access experience for sliced networks.
  • Fig. 1 is a schematic structural diagram of a wireless communication system according to an exemplary embodiment
  • Fig. 2 is a schematic flowchart of a communication method according to an exemplary embodiment
  • Fig. 3 is a schematic flowchart of a communication method according to an exemplary embodiment
  • Fig. 4 is a schematic flowchart of a communication method according to an exemplary embodiment
  • Fig. 5 is a schematic flowchart of a communication method according to an exemplary embodiment
  • Fig. 6 is a schematic diagram of interactive communication between PCF and SMF according to an exemplary embodiment
  • Fig. 7 is a schematic diagram of communication showing a UE requesting session establishment according to an exemplary embodiment
  • Fig. 8 is a schematic diagram of communication showing termination of SM policy association according to an exemplary embodiment
  • Fig. 9 is a schematic flowchart of a communication method according to an exemplary embodiment
  • Fig. 10 is a schematic flowchart of a communication method according to an exemplary embodiment
  • Fig. 11 is a schematic diagram of communication of AM policy association modification according to an exemplary embodiment
  • Fig. 12 is a schematic diagram of communication of AM policy association modification initiated by PCF according to an exemplary embodiment
  • Fig. 13 is a schematic diagram showing the composition and structure of a communication device according to an exemplary embodiment
  • Fig. 14 is a schematic diagram showing the composition and structure of a communication device according to an exemplary embodiment
  • Fig. 15 is a schematic diagram showing the composition and structure of a communication device according to an exemplary embodiment
  • Fig. 16 is a schematic diagram showing the composition and structure of a communication device according to an exemplary embodiment
  • Fig. 17 is a schematic diagram showing the composition and structure of a communication device according to an exemplary embodiment
  • Fig. 18 is a schematic diagram showing the composition and structure of a user equipment according to an exemplary embodiment.
  • first, second, third, etc. may use the terms first, second, third, etc. to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the embodiments of the present disclosure, first information may also be called second information, and similarly, second information may also be called first information. Depending on the context, the word “if” as used herein may be interpreted as “at” or "when” or "in response to a determination.”
  • FIG. 1 shows a schematic structural diagram of a wireless communication system provided by an embodiment of the present disclosure.
  • the wireless communication system is a communication system based on cellular mobile communication technology, and the wireless communication system may include: several terminals 11 and several base stations 12 .
  • the terminal 11 may be a device that provides voice and/or data connectivity to the user.
  • the terminal 11 can communicate with one or more core networks via a radio access network (Radio Access Network, RAN), and the terminal 11 can be an Internet of Things terminal, such as a sensor device, a mobile phone (or called a "cellular" phone) and a
  • the computer of the IoT terminal for example, may be a fixed, portable, pocket, hand-held, built-in computer or vehicle-mounted device.
  • station For example, station (Station, STA), subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station), mobile station (mobile), remote station (remote station), access point, remote terminal ( remote terminal), an access terminal (access terminal), a user device (user terminal), a user agent (user agent), a terminal (user device), or a user terminal (user equipment, UE).
  • the terminal 11 may also be a device of an unmanned aerial vehicle.
  • the terminal 11 may also be a vehicle-mounted device, for example, a trip computer with a wireless communication function, or a wireless communication device connected externally to the trip computer.
  • the terminal 11 may also be a roadside device, for example, it may be a street lamp, a signal lamp, or other roadside devices with a wireless communication function.
  • the base station 12 may be a network side device in a wireless communication system.
  • the wireless communication system may be a fourth generation mobile communication technology (the 4th generation mobile communication, 4G) system, also known as a Long Term Evolution (LTE) system; or, the wireless communication system may also be a 5G system, Also known as new radio (NR) system or 5G NR system.
  • the wireless communication system may be any generation system.
  • the access network in the 5G system can be called NG-RAN (New Generation-Radio Access Network, New Generation Radio Access Network).
  • the MTC system may be a network side device in a wireless communication system.
  • NG-RAN New Generation-Radio Access Network, New Generation Radio Access Network
  • the base station 12 may be an evolved base station (eNB) adopted in a 4G system.
  • the base station 12 may also be a base station (gNB) adopting a centralized and distributed architecture in the 5G system.
  • eNB evolved base station
  • gNB base station
  • the base station 12 adopts a centralized distributed architecture it usually includes a centralized unit (Central Unit, CU) and at least two distributed units (Distributed Unit, DU).
  • the centralized unit is provided with a packet data convergence protocol (Packet Data Convergence Protocol, PDCP) layer, radio link layer control protocol (Radio Link Control, RLC) layer, media access control (Media Access Control, MAC) layer protocol stack;
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC media access control
  • a physical (Physical, PHY) layer protocol stack is set in the unit, and the embodiment of the present disclosure does not limit the specific implementation manner of the base station 12 .
  • a wireless connection can be established between the base station 12 and the terminal 11 through a wireless air interface.
  • the wireless air interface is a wireless air interface based on the fourth-generation mobile communication network technology (4G) standard; or, the wireless air interface is a wireless air interface based on the fifth-generation mobile communication network technology (5G) standard, such as
  • the wireless air interface is a new air interface; alternatively, the wireless air interface may also be a wireless air interface based on a technical standard of a next-generation mobile communication network based on 5G.
  • an E2E (End to End, end-to-end) connection can also be established between the terminals 11.
  • V2V vehicle to vehicle, vehicle-to-vehicle
  • V2I vehicle to Infrastructure, vehicle-to-roadside equipment
  • V2P vehicle to Pedestrian, vehicle-to-person communication in vehicle to everything (V2X) communication Wait for the scene.
  • the above wireless communication system may further include a network management device 13 .
  • the network management device 13 may be a core network device in the wireless communication system, for example, the network management device 13 may be a mobility management entity (Mobility Management Entity, MME).
  • MME Mobility Management Entity
  • the network management device can also be other core network devices, such as Serving GateWay (SGW), Public Data Network Gateway (Public Data Network GateWay, PGW), policy and charging rule functional unit (Policy and Charging Rules Function, PCRF) or Home Subscriber Server (Home Subscriber Server, HSS), etc.
  • SGW Serving GateWay
  • PGW Public Data Network Gateway
  • PCRF Policy and Charging Rules Function
  • HSS Home Subscriber Server
  • Executors involved in the embodiments of the present disclosure include, but are not limited to: a terminal (UE, User Equipment) in a cellular mobile communication system, a base station of cellular mobile communication, and the like.
  • the Policy Control Function requests the AMF to report the slice maximum bit rate (MBR) of the Subscription Permanent Identifier (SUPI, Subscription Permanent Identifier) assigned to each S-NSSAI that has passed the activation policy control request Access and Mobility Policy Association (Access and Mobility Policy Association) established by the trigger.
  • MBR slice maximum bit rate
  • SUPI Subscription Permanent Identifier
  • Access and Mobility Policy Association Access and Mobility Policy Association
  • PCF can terminate the access and mobility policy association with the AMF, or change the slice MBR value of the bronze user.
  • the main problem with the current solution is: PCF terminates the association or changes the slice MBR value based on the allocated data rate instead of the actual used data rate.
  • the actual used data rate of some UEs is almost up to the allocated rate, but for other UEs, the amount of unused data rate is very large.
  • the actual used data rate of a bronze user may almost reach the allocated data rate, but for a gold user, the amount of unused data rate may be very large.
  • Fig. 2 is a schematic flow diagram of a communication method according to an exemplary embodiment. As shown in Fig. 2, the communication method of the embodiment of the present disclosure is applied to the network device side, and the network device includes a control plane network element of a core network network element, etc. , the communication method of the embodiment of the present disclosure includes the following processing steps:
  • Step 201 in response to the trigger of a policy decision, the first control plane network element executes a session management SM policy association modification process initiated by itself, so as to notify the second control plane network element of policy modification.
  • the first control plane network element includes a Policy Control Function (PCF, Policy Control Function) network element.
  • PCF Policy Control Function
  • the second control plane network element includes a session management function (SMF, Session Management Function) network element.
  • PCF initiates the Session Management (SM, Session Management) Policy Association Modification (SM Policy Association Modification) process to downgrade the Session Aggregate Maximum Bit Rate (Session-AMBR, Session Aggregate Maximum Bite Rate), and utilizes actual usage data rate as input.
  • SM Session Management
  • SM Policy Association Modification Policy Association Modification
  • PCF is based on internal PCF events or by other peers of PCF such as application layer function (AF, Application Function) network element, unified data warehouse (UDR, Unified Data Repository), network data analysis function (NWDAF, Network Data Analysis Function) network
  • AF Application Function
  • UDR Unified Data Repository
  • NWDAF Network Data Analysis Function
  • Step 202 If the data rate of the slice reaches the threshold, the first control plane network element uses the actually used data rate as an input for a policy decision, and reduces the Session-AMBR maximum bit rate.
  • the first control plane network element uses the ratio of the actually used data rate to the accumulated data rate and the maximum bit rate MBR of the service data flow SDF as the first control The input of the policy decision of the plane network element.
  • the first control plane network element uses the user category as an input of the policy decision of the first control plane network element.
  • the first control plane network element uses an application-based preference as an input for the policy decision of the first control plane network element.
  • the first control plane network element uses user category and application-based preferences as inputs for policy decisions of the first control plane network element.
  • the first control plane network element lowers the Session-AMBR, including:
  • the first control plane network element sends a first indication message to the second control plane network element, where the first indication message is used to indicate an SM policy association modification that reduces Session-AMBR.
  • the first indication message includes at least one of the following information: S-NSSAI identifier and authorized Session-AMBR.
  • the first indication message includes a session management policy association modification message (SM Policy Association Modification message).
  • SM Policy Association Modification message SM Policy Association Modification message
  • the first control plane network element uses analysis information (analytics information) provided by the NWDAF network element as an input of the policy decision of the first control plane network element.
  • the communication method in the embodiment of the present disclosure can systematically and accurately realize the dynamic adjustment of Session-AMBR to meet the data rate limit of each network slice, and can adjust the data rate of each network slice according to the actual data rate used.
  • FIG. 3 is a schematic flowchart of a communication method according to an exemplary embodiment. As shown in FIG. 3 , the communication method in this embodiment of the disclosure includes the following processing steps:
  • Step 301 the second control plane network element receives a first indication message indicating that the data rate of the S-NSSAI reaches a threshold from the first control plane network element.
  • the first indication message includes at least one of the following information: S-NSSAI identifier and authorized Session-AMBR.
  • Step 302 the second control plane network element changes the Session-AMBR in response to the first indication message.
  • the second control plane network element initiates a packet data unit PDU session modification process to change the Session-AMBR.
  • the first indication message includes SM Policy Association Modification message.
  • Fig. 4 is a schematic flow diagram of a communication method according to an exemplary embodiment. As shown in Fig. 4, the communication method of the embodiment of the present disclosure is applied to the network device side, and the network device includes a control plane network element of a core network network element, etc. , the communication method of the embodiment of the present disclosure includes the following processing steps:
  • Step 401 in response to the trigger of a policy decision, the first control plane network element executes an SM policy association modification process initiated by itself, so as to notify the second control plane network element of policy modification.
  • the first control plane network element includes a Policy Control Function (PCF, Policy Control Function) network element.
  • PCF Policy Control Function
  • the second control plane network element includes a session management function (SMF, Session Management Function) network element.
  • PCF initiates the Session Management (SM, Session Management) Policy Association Modification (SM Policy Association Modification) process to downgrade the Session Aggregate Maximum Bit Rate (Session-AMBR, Session Aggregate Maximum Bite Rate), and utilizes actual usage data rate as input.
  • SM Session Management
  • SM Policy Association Modification Policy Association Modification
  • PCF is based on internal PCF events or by other peers of PCF such as application layer function (AF, Application Function) network element, unified data warehouse (UDR, Unified Data Repository), network data analysis function (NWDAF, Network Data Analysis Function) network
  • AF Application Function
  • UDR Unified Data Repository
  • NWDAF Network Data Analysis Function
  • Step 402 if the data rate of the S-NSSAI reaches the threshold, the first control plane network element updates the policy and charging control PCC rules, and uses the actually used data rate as the policy decision of the first control plane network element input of.
  • the notifying the modification of the policy to the second control plane network element includes: the first control plane network element sends a first indication message to the second control plane network element, and the first indication message is used to indicate to reduce correlation MBR of the QoS flow.
  • the first indication message includes at least one of the following information: S-NSSAI identifier, MBR and GBR corresponding to the SDF.
  • the first indication message includes SM Policy Association Modification message.
  • the first control plane network element uses the ratio of the actually used data rate of the slice to the accumulated data rate and the maximum bit rate MBR of the service data flow SDF as the The input of the policy decision of the first control plane network element.
  • the first control plane network element uses the user category as an input of the policy decision of the first control plane network element.
  • the first control plane network element uses an application-based preference as an input for the policy decision of the first control plane network element.
  • the first control plane network element uses user category and application-based preferences as inputs for policy decisions of the first control plane network element.
  • the first control plane network element uses analysis information (analytics information) provided by the NWDAF network element as an input of the policy decision of the first control plane network element.
  • FIG. 5 is a schematic flowchart of a communication method according to an exemplary embodiment. As shown in FIG. 5 , the communication method in this embodiment of the disclosure includes the following processing steps:
  • Step 501 the second control plane network element receives a first indication message indicating that the data rate of the S-NSSAI reaches a threshold from the first control plane network element.
  • the first indication message includes at least one of the following information: S-NSSAI identifier, corresponding MBR and GBR of the SDF.
  • step 502 the second control plane network element changes the corresponding MBR and GBR of the SDF in response to the first indication message.
  • the second control plane network element enforces the authorized QoS of the service data flow according to the PCC rule.
  • the first indication message includes SM Policy Association Modification message.
  • Fig. 6 is a schematic diagram showing interactive communication between PCF and SMF according to an exemplary embodiment. As shown in Fig. 6 , the interactive communication between PCF and SMF in the embodiment of the present disclosure includes the following processing steps:
  • Step 1a as an implementation, optionally, for example, due to AF session signaling, the AF provides/revokes service information to the PCF by calling the Npcf_PolicyAuthorization_Create Request or Npcf_PolicyAuthorization_Update Request service operation.
  • the PCF responds to the AF in order to initiate Session-AMBR adjustment.
  • Step 1b uses the NWDAF service to disclose the slice data rate analysis from the NWDAF to the PCF.
  • Analytics such as Analytics ID
  • NWDAF User Data Assistance Function
  • some internal event such as a timer or a local decision based on the analysis information requested and received from NWDAF
  • the PCF responds to the NWDAF in order to initiate a Session-AMBR adjustment.
  • Step 1c as another implementation, UDR calls Nudr_DM_Notify (notification related ID, policy data, user permanent identifier (SUPI, Subscription Permanent Identifier), updated data, "PDU session policy control data"/"maximum data rate) Notify PCF of policy subscription change. PCF responds with UDR.
  • Nudr_DM_Notify notification related ID, policy data, user permanent identifier (SUPI, Subscription Permanent Identifier), updated data, "PDU session policy control data"/"maximum data rate
  • PCF responds with UDR.
  • Step 1a, 1b or 1c can be triggered by local decision of PCF, or based on other peers of PCF (such as AF, NWDAF, UDR).
  • PCF peer of PCF
  • relevant network elements establish SM policy association with PCF. Just make sure that the relevant information received can be used by the PCF for future policy decisions.
  • step 2 the PCF determines that the data rate of the S-NSSAI reaches the threshold, then the PCF uses the used data rate as an input and makes a policy decision.
  • the PCF initiates session management policy association modification to downgrade the Session-AMBR and adjusts the slice data rate; or terminates the session management policy association for slice data rate control as required.
  • Step 3 PCF executes the SM policy association modification program initiated by PCF, to notify SMF of the modification of relevant policies; if the data rate used for S-NSSAI reaches a threshold, then PCF can determine that the updated policy information (downgrade Session-AMBR , sending the exploited data rate as input to its policy decision) to the SMF. PCF may also decide to subscribe a new Analytics ID from NWDAF.
  • the PCF can retrieve it from the UDR by calling the Nudr_DM_Query (BDT Reference ID, Policy Data, Background Data Transfer) service.
  • Nudr_DM_Query BDT Reference ID, Policy Data, Background Data Transfer
  • Step 4 If the PCF determines in step 3 that the SMF needs updated policy information, the PCF issues a Npcf_SMPolicyControl_UpdateNotify request with possible updated policy information about the PDU session, including the S-NSSAI identifier and the authorized Session-AMBR.
  • the SMF is notified of the PCF request through the Npcf_SMPolicyControl_UpdateNotify response.
  • the SMF may notify the UPF and the radio access network NG-RAN to reduce the session-AMBR of the downlink and uplink respectively.
  • NG-RAN will enforce uplink data rate limit on non-GBR flow according to the updated Session-AMBR value received from SMF.
  • the SMF may downgrade the corresponding MBR assigned to the SDF template.
  • SMF shall store the SM policy association associated with the new PCF instance.
  • the PCF starts the SM policy association modification procedure to downgrade the Session-AMBR, and the PCF can use the ratio of the actual used data rate to the accumulated data rate and the maximum bit rate MBR of the service data flow SDF as input . Specifically, the following processing steps are included:
  • Step 1a as an implementation, optionally, for example, due to AF session signaling, the AF provides/revokes service information to the PCF by calling the Npcf_PolicyAuthorization_Create Request or Npcf_PolicyAuthorization_Update Request service operation.
  • the PCF responds to the AF in order to initiate Session-AMBR adjustment.
  • Step 1b uses the NWDAF service to disclose the slice data rate analysis from the NWDAF to the PCF.
  • Analytics such as Analytics ID
  • NWDAF User Data Assistance Function
  • some internal event such as a timer or a local decision based on the analysis information requested and received from NWDAF
  • the PCF responds to the NWDAF in order to initiate a Session-AMBR adjustment.
  • Step 1c as another implementation, UDR calls Nudr_DM_Notify (notification related ID, policy data, user permanent identifier (SUPI, Subscription Permanent Identifier), updated data, "PDU session policy control data"/"maximum data rate) Notify PCF of policy subscription change. PCF responds with UDR.
  • Nudr_DM_Notify notification related ID, policy data, user permanent identifier (SUPI, Subscription Permanent Identifier), updated data, "PDU session policy control data"/"maximum data rate
  • PCF responds with UDR.
  • Step 1a, 1b or 1c can be triggered by local decision of PCF, or based on other peers of PCF (such as AF, NWDAF, UDR).
  • PCF peer of PCF
  • relevant network elements establish SM policy association with PCF. Just make sure that the relevant information received can be used by the PCF for future policy decisions.
  • Step 2 PCF determines that the data rate of S-NSSAI reaches the threshold, then PCF takes the ratio of the actually used data rate to the accumulated data rate and the maximum bit rate MBR of the service data flow SDF as input and makes a policy decision.
  • the PCF initiates session management policy association modification to update the downgraded Session-AMBR and adjust the slice data rate; or terminate the session management policy association for slice data rate control as required.
  • Step 3 PCF executes the SM policy association modification program initiated by PCF, to notify SMF of the modification of relevant policies; if the data rate used for S-NSSAI reaches a threshold, then PCF can determine that the updated policy information (downgrade Session-AMBR , sending the exploited data rate as input to its policy decision) to the SMF. PCF may also decide to subscribe a new Analytics ID from NWDAF.
  • the PCF can retrieve it from the UDR by calling the Nudr_DM_Query (BDT Reference ID, Policy Data, Background Data Transfer) service.
  • Nudr_DM_Query BDT Reference ID, Policy Data, Background Data Transfer
  • Step 4 If the PCF determines in step 3 that the SMF needs updated policy information, the PCF sends a Npcf_SMPolicyControl_UpdateNotify request with possible updated policy information about the PDU session, including the S-NSSAI identifier and the authorized Session-AMBR.
  • the SMF learns of the PCF request through the Npcf_SMPolicyControl_UpdateNotify response.
  • the SMF may notify the UPF and the radio access network NG-RAN to reduce the session-AMBR of the downlink and uplink respectively.
  • NG-RAN will enforce uplink data rate limit on non-GBR flow according to the updated Session-AMBR value received from SMF.
  • the SMF may reduce the corresponding MBR assigned to the SDF template.
  • the PCF starts the SM policy association modification process, and uses the actual data rate and user category as input to downgrade the Session-AMBR. Specifically include the following steps:
  • Step 1a as an implementation, optionally, for example, due to AF session signaling, the AF provides/revokes service information to the PCF by calling the Npcf_PolicyAuthorization_Create Request or Npcf_PolicyAuthorization_Update Request service operation.
  • the PCF responds to the AF in order to initiate Session-AMBR adjustment.
  • Step 1b uses the NWDAF service to disclose the slice data rate analysis from the NWDAF to the PCF.
  • Analytics such as Analytics ID
  • NWDAF User Data Assistance Function
  • some internal event such as a timer or a local decision based on the analysis information requested and received from NWDAF
  • the PCF responds to the NWDAF in order to initiate a Session-AMBR adjustment.
  • Step 1c as another implementation, UDR calls Nudr_DM_Notify (notification related ID, policy data, user permanent identifier (SUPI, Subscription Permanent Identifier), updated data, "PDU session policy control data"/"maximum data rate) Notify PCF of policy subscription change. PCF responds with UDR.
  • Nudr_DM_Notify notification related ID, policy data, user permanent identifier (SUPI, Subscription Permanent Identifier), updated data, "PDU session policy control data"/"maximum data rate
  • PCF responds with UDR.
  • Step 1a, 1b or 1c can be triggered by local decision of PCF, or based on other peers of PCF (such as AF, NWDAF, UDR).
  • PCF peer of PCF
  • relevant network elements establish SM policy association with PCF. Just make sure that the relevant information received can be used by the PCF for future policy decisions.
  • step 2 the PCF determines that the data rate of the S-NSSAI reaches the threshold, then the PCF uses the actually used data rate and user category as input and makes a policy decision.
  • the PCF initiates session management policy association modification to update the downgraded Session-AMBR and adjust the slice data rate; or terminate the session management policy association for slice data rate control as required.
  • Step 3 PCF executes the SM policy association modification program initiated by PCF, to notify SMF of the modification of relevant policies; if the data rate used for S-NSSAI reaches a threshold, then PCF can determine that the updated policy information (downgrade Session-AMBR , sending the exploited data rate as input to its policy decision) to the SMF. PCF may also decide to subscribe a new Analytics ID from NWDAF.
  • the PCF can retrieve it from the UDR by calling the Nudr_DM_Query (BDT Reference ID, Policy Data, Background Data Transfer) service.
  • Nudr_DM_Query BDT Reference ID, Policy Data, Background Data Transfer
  • Step 4 If the PCF determines in step 3 that the SMF needs updated policy information, the PCF sends a Npcf_SMPolicyControl_UpdateNotify request with possible updated policy information about the PDU session, including the S-NSSAI identifier and the authorized Session-AMBR.
  • the SMF is notified of the PCF request through the Npcf_SMPolicyControl_UpdateNotify response.
  • the SMF may notify the UPF and the radio access network NG-RAN to reduce the session-AMBR of the downlink and uplink respectively.
  • NG-RAN will enforce uplink data rate limit on non-GBR flow according to the updated Session-AMBR value received from SMF.
  • the SMF may reduce the corresponding MBR assigned to the SDF template.
  • the PCF initiates the SM policy association modification process to downgrade the Session-AMBR using the actual used data rate and application-based preferences as input. Specifically include the following steps:
  • Step 1a as an implementation, optionally, for example, due to AF session signaling, the AF provides/revokes service information to the PCF by calling the Npcf_PolicyAuthorization_Create Request or Npcf_PolicyAuthorization_Update Request service operation.
  • the PCF responds to the AF in order to initiate Session-AMBR adjustment.
  • Step 1b uses the NWDAF service to disclose the slice data rate analysis from the NWDAF to the PCF.
  • Analytics such as Analytics ID
  • NWDAF User Data Assistance Function
  • some internal event such as a timer or a local decision based on the analysis information requested and received from NWDAF
  • the PCF responds to the NWDAF in order to initiate a Session-AMBR adjustment.
  • Step 1c as another implementation, UDR calls Nudr_DM_Notify (notification related ID, policy data, user permanent identifier (SUPI, Subscription Permanent Identifier), updated data, "PDU session policy control data"/"maximum data rate) Notify PCF of policy subscription change. PCF responds with UDR.
  • Nudr_DM_Notify notification related ID, policy data, user permanent identifier (SUPI, Subscription Permanent Identifier), updated data, "PDU session policy control data"/"maximum data rate
  • PCF responds with UDR.
  • Step 1a, 1b or 1c can be triggered by local decision of PCF, or based on other peers of PCF (such as AF, NWDAF, UDR).
  • PCF peer of PCF
  • relevant network elements establish SM policy association with PCF. Just make sure that the relevant information received can be used by the PCF for future policy decisions.
  • step 2 the PCF determines that the data rate of the S-NSSAI reaches the threshold, then the PCF uses the actually used data rate and user category as input and makes a policy decision.
  • the PCF initiates session management policy association modification to update the downgraded Session-AMBR and adjust the slice data rate; or terminate the session management policy association for slice data rate control as required.
  • Application-based preferences include timely and effective preference applications, such as UE1 likes to use VR games during office breaks, and likes to use streaming services during breaks after 9 pm.
  • the application preference profile may be preset by the 5G system based on the UE usage pattern, etc.
  • Step 3 PCF executes the SM policy association modification program initiated by PCF, to notify SMF of the modification of relevant policies; if the data rate used for S-NSSAI reaches a threshold, then PCF can determine that the updated policy information (downgrade Session-AMBR , sending the exploited data rate as input to its policy decision) to the SMF. PCF may also decide to subscribe a new Analytics ID from NWDAF.
  • the PCF can retrieve it from the UDR by calling the Nudr_DM_Query (BDT Reference ID, Policy Data, Background Data Transfer) service.
  • Nudr_DM_Query BDT Reference ID, Policy Data, Background Data Transfer
  • Step 4 If the PCF determines in step 3 that the SMF needs updated policy information, the PCF sends a Npcf_SMPolicyControl_UpdateNotify request with possible updated policy information about the PDU session, including the S-NSSAI identifier and the authorized Session-AMBR.
  • the SMF is notified of the PCF request through the Npcf_SMPolicyControl_UpdateNotify response.
  • the SMF may notify the UPF and the radio access network NG-RAN to reduce the session-AMBR of the downlink and uplink respectively.
  • NG-RAN will enforce uplink data rate limit on non-GBR flow according to the updated Session-AMBR value received from SMF.
  • the SMF may reduce the corresponding MBR assigned to the SDF template.
  • Fig. 7 is a communication schematic diagram showing a UE requesting session establishment according to an exemplary embodiment.
  • the process of establishing and modifying a PDU session requested by a UE with dynamic adjustment of slice date rate in an embodiment of the present disclosure includes the following processing steps :
  • the PCF supports the monitoring and enforcement of the total bandwidth of each S-NSSAI, and may receive slice-specific policy control information of each S-NSSAI from the UDR.
  • step 2 the UE starts the PDU session establishment process, and the session establishment message includes the S-NSSAI.
  • AMF selects SMF and initiates PDU session establishment, as described in TS 23.501, the details of which will not be repeated here).
  • the SMF may execute an SM policy association establishment process to establish an SM policy association with the PCF and obtain a default PCC rule of the PDU session. If the request type in step 2 indicates "existing PDU session", the SMF MAY provide information about the policy control request trigger conditions that have been met by the SMF-initiated SM policy association modification process.
  • the SMF sends a data rate check request to the PCF, which includes the S-NSSAI, UE-ID, PDU session ID, session AMBR and MFBR values of all GBR flows to be established.
  • step 4 the PCF checks whether the slice data rate of the S-NSSAI reaches the threshold.
  • the threshold can be set by the operator's policy according to the total slice bandwidth.
  • the PCF subtracts the data rate of the S-NSSAI from the value of the authorized Session-AMBR assigned to the PDU session, and stores it in the UDR.
  • Step 5 If the data rate of the S-NSSAI does not reach the threshold, the PCF will provide the SMF with policy information of UL and/or DL Session-AMBR or MBR. (Same as described in TS 23.503 and 23.502)
  • Step 6 SMF sends PDU Session Response to UE (same as described in TS 23.501, sent to AMF and forwarded to RAN and UE).
  • Step 7a alternatively, using NWDAF service is used to expose slice data rate analysis from NWDAF to PCF.
  • Analytics such as Analytics ID
  • NWDAF can be requested from NWDAF.
  • some internal event occurs in PCF (eg timer or local decision based on analysis information requested and received from NWDAF).
  • Step 7 if the data rate of the S-NSSAI reaches the threshold, the PCF can use the actual used data rate as input and make a policy decision.
  • the PCF initiates session management policy association modification to update the downgraded Session-AMBR and adjust the slice data rate.
  • the PCF executes the PCF-initiated SM policy association modification process to notify the SMF of the policy modification; the PCF can determine that the updated policy information (downgrade Session-AMBR/MBR, using the actual used data rate as input for its policy decision) needs to be sent to SMF.
  • PCF may also decide to subscribe a new Analytics ID from NWDAF.
  • Step 9 If the PCF determines in step 8 that the SMF needs updated policy information, the PCF issues an Npcf_SMPolicyControl_UpdateNotify request for the PDU session, which includes the S-NSSAI identifier and the authorized Session-AMBR.
  • the SMF is notified of the PCF request through Npcf_SMPolicyControl_UpdateNotify.
  • the SMF can request the PDU session modification procedure to notify the UPF and NG-RAN to reduce the Session-AMBR of the downlink and uplink respectively.
  • NG-RAN will implement uplink data rate limit for non-GBR flows according to the updated Session-AMBR value received from SMF, which is the same as in TS 23.501.
  • the SMF may reduce the corresponding MBR assigned to the SDF template.
  • Fig. 8 is a schematic diagram showing communication termination of SM policy association according to an exemplary embodiment. As shown in Fig. 8 , the execution of session management policy termination in this embodiment of the present disclosure may be initiated by PCF or SMF:
  • the PCF may call the Npcf_SMPolicyControl_UpdateNotify service operation to request release of the PDU session. SMF confirms the request.
  • the SMF may invoke the Npcf_SMPolicyControl_Delete service operation to request deletion of the SM policy association with the PCF.
  • the SMF provides relevant operational information to the PCF.
  • Step 3 when receiving the request from step 2, the PCF will find the PCC rule that needs to be notified to the AF, and delete the PCC rule for the PDU session.
  • the PCF shall update the data rate for that S-NSSAI in the UDR.
  • step 4 the SMF deletes the policy information of all PDU sessions associated with the PDU session.
  • Step 5 PCF may unsubscribe from NWDAF's analysis.
  • step 6 the PCF deletes the information related to the terminated PDU session, and confirms to the SMF that the PCF processing of the PDU session has been terminated. This interaction is a response to the SMF request in step 2.
  • step 7 the PCF updates the data rate of the S-NSSAI in the UDR.
  • Step 8 Subscribing to notifications, the PCF may (for example, if it is the last PDU session on the (DNN, S-NSSAI) pair) unsubscribe from the UDR for notifications of PDU session-related data modifications by calling Nudr_DM_Unsubscribe(subscription association ID).
  • Fig. 9 is a schematic flowchart of a communication method according to an exemplary embodiment. As shown in Fig. 9, the communication method in this embodiment of the disclosure includes:
  • Step 901 in response to the triggering of the policy decision, the first control plane network element executes an access and mobility AM policy association modification process initiated by itself, so as to notify the third control plane network element of policy modification.
  • the first control plane network element includes a PCF, a Policy Control Function network element.
  • the third control plane network element includes an Access and Mobility Management Function (AMF, Access and Mobility Management Function) network element.
  • AMF Access and Mobility Management Function
  • Step 902 If the data rate of the S-NSSAI reaches the threshold, the first control plane network element reduces the user slice aggregation maximum bit rate UE-Slice-AMBR, and uses the actually used data rate as the first control The input of the policy decision of the plane network element.
  • the first control plane network element reduces the UE-Slice-AMBR, including:
  • the first control plane network element sends a second indication message to the third control plane network element, where the second indication message is used to indicate an AM policy association modification that reduces UE-Slice-AMBR.
  • the second indication message includes at least one of the following information: S-NSSAI identifier and authorized UE-Slice-AMBR.
  • the second indication message includes an access and mobility management policy association modification message (AM Policy Association Modification message).
  • the first control plane network element uses the ratio of the actually used data rate to the accumulated data rate and the service data flow SDF maximum bit rate MBR as the policy decision of the first control plane network element enter.
  • the first control plane network element uses the user category as an input for the policy decision of the first control plane network element.
  • the first control plane network element uses an application-based preference as an input for the policy decision of the first control plane network element.
  • the first control plane network element uses user category and application-based preferences as inputs for policy decisions of the first control plane network element.
  • the first control plane network element uses the analysis information provided by the NWDAF network element as an input for the policy decision of the first control plane network element.
  • FIG. 10 is a schematic flowchart of a communication method according to an exemplary embodiment. As shown in FIG. 10 , the communication method in this embodiment of the disclosure includes:
  • Step 1001 the third control plane network element receives a second indication message indicating that the data rate of the S-NSSAI reaches the threshold from the first control plane network element.
  • the second indication message includes at least one of the following information: S-NSSAI identifier and authorized UE-Slice-AMBR.
  • the second indication message includes an AM Policy Association Modification message.
  • Step 1002 the third control plane network element changes UE-Slice-AMBR in response to the indication message.
  • the third control plane network element initiates a PDU session modification process to change the UE-Slice-AMBR.
  • Fig. 11 is a schematic diagram of communication of AM policy association modification according to an exemplary embodiment. As shown in Fig. 11 , in the case of non-roaming, the role of the V-PCF is assumed by the PCF. For the roaming scheme, the V-PCF interacts with the AMF.
  • the communication method for this example includes the following steps:
  • Step 1 when the policy control request trigger condition is met, AMF will update the AM policy association by calling Npcf_AMPolicyControl_Update and provide information about the conditions that have been changed to PCF. For example UE-Slice-AMBR changes, the data rate of S-NSSAI reaches the threshold.
  • step 2 the (V-)PCF stores the information received in step 1 and makes a policy decision.
  • PCF can subscribe Analytics from NWDAF.
  • the PCF can use the actual used data rate as input and make a policy decision.
  • the PCF sends an AM policy association modification response to reduce the UE-Slice-AMBR and adjust the slice data rate, and the response includes the S-NSSAI identifier and the UE-Slice-AMBR.
  • the input information can be in any of the following forms: actual used data rate, ratio of actual used data rate to accumulated data rate and MBR for each SDF in the network slice, user class and application-based preference.
  • step 3 the (V)PCF responds to the AMF with updated policy control information related to access and mobility and updated policy control request trigger parameters.
  • Step 4 AMF deployment includes storing the service area restriction associated with the AM policy and the access and mobility control policy of the policy control request trigger, providing the service area restriction and RFSP index to the UE, UE-AMBR, UE-Slice-NG-RAN MBR and service area restrictions.
  • the following procedure applies to AM Policy Association amendments initiated by PCF.
  • the procedure driven by PCF internal events works for both roaming and non-roaming scenarios, while when driven by NWDAF it only works for non-roaming scenarios.
  • the role of V-PCF is assumed by PCF.
  • the V-PCF interacts with the AMF.
  • the V-PCF/PCF stores access and mobility control policy information provided to the AMF.
  • Fig. 12 is a schematic diagram of communication of AM policy association modification initiated by PCF according to an exemplary embodiment.
  • the AM policy association modification process can be initiated by an internal PCF event, or the PCF can obtain relevant analysis information from NWDAF start up. Specifically include the following steps:
  • step 1 the PCF internally determines that the new state of the UE context requires a new policy, which may be triggered by the notification of the UDR. It can also be triggered by obtaining relevant analysis information from NWDAF.
  • Step 2 the (V-)PCF is in the roaming situation, while the PCF makes policy decisions in the non-roaming situation.
  • PCF may also decide to subscribe a new Analytics ID from NWDAF.
  • the PCF can use the utilized data rate as input and make a policy decision.
  • the PCF sends Npcf_AMPolicyControl_UpdateNotify to reduce the UE-Slice-AMBR and adjust the slice data rate, and the sent message includes the S-NSSAI identifier and UE-Slice-AMBR.
  • the input information can be in any of the following forms: actual used data rate, ratio of actual used data rate to accumulated data rate and MBR of SDF, user class and application based preference.
  • Step 3 the (V-)PCF in the roaming situation and the PCF in the non-roaming situation send Npcf_AMPolicyControl_UpdateNotify, and the Npcf_AMPolicyControl_UpdateNotify includes the SUPI-related AM policy association ID.
  • Policy updates may include service area restrictions, UE-AMBR, UE-Slice-MBR or RFSP index values. If the AF has previously subscribed to the event request for the result of the assigned service area coverage in step 1, the (V-)PCF checks whether the assigned service area coverage has changed and sends a corresponding notification to the AF using Npcf_AMPolicyAuthorization_Notify, see protocol Relevant definitions in Section 6.3.1.18 of TS 23.503 [20].
  • Step 4 AMF deploys and stores updated policy information related to access and mobility, including storing service area restrictions and policy control request triggers associated with AM policies, providing service area restrictions and RFSP indexes to UE, UE-Slice - Service area limitation for MBR and NG-RAN.
  • Fig. 13 is a schematic diagram showing the composition and structure of a communication device according to an exemplary embodiment.
  • the communication device in this embodiment of the disclosure includes:
  • the sending unit 131 is configured to, in response to the trigger of the policy decision, execute the SM policy association modification process initiated by the first control plane network element, so as to notify the second control plane network element of the modification of the policy;
  • the processing unit 132 is configured to, if the data rate of the slice reaches a threshold, use the actually used data rate as an input for a policy decision, and reduce the session aggregation maximum bit rate Session-AMBR.
  • processing unit 132 is further configured to:
  • the analysis information provided by the network data analysis function NWDAF network element is used as an input for the policy decision of the first control plane network element.
  • the sending unit 131 is further configured to:
  • the sending unit 131, the processing unit 132, etc. may be controlled by one or more central processing units (CPU, Central Processing Unit), graphics processing units (GPU, Graphics Processing Unit), baseband processors (BP, Base Processor), Application Specific Integrated Circuit (ASIC, Application Specific Integrated Circuit), Digital Signal Processor (Digital Signal Processor, DSP), Programmable Logic Device (PLD, Programmable Logic Device), Complex Programmable Logic Device (CPLD, Complex Programmable Logic Device), Field-Programmable Gate Array (FPGA, Field-Programmable Gate Array), general-purpose processor, controller, microcontroller (MCU, Micro Controller Unit), microprocessor (Microprocessor), or other electronic components, It can also be implemented in combination with one or more radio frequency (RF, radio frequency) antennas, and is used to execute the steps of the method for dynamically indicating information in the foregoing embodiments.
  • RF radio frequency
  • Fig. 14 is a schematic diagram showing the composition and structure of a communication device according to an exemplary embodiment.
  • the communication device in this embodiment of the disclosure includes:
  • the sending unit 141 is configured to, in response to the trigger of the policy decision, execute the SM policy association modification process initiated by the first control plane network element, so as to notify the second control plane network element of the modification of the policy;
  • the processing unit 142 is configured to: if the data rate of the S-NSSAI reaches a threshold, the first control plane network element updates the PCC rule, and uses the actually used data rate as an input for the policy decision of the first control plane network element .
  • processing unit 142 is further configured to:
  • the analysis information provided by the network data analysis function NWDAF network element is used as an input for the policy decision of the first control plane network element.
  • the sending unit 141 is also configured to:
  • the sending unit 141, the processing unit 142, etc. may be controlled by one or more central processing units (CPU, Central Processing Unit), graphics processing units (GPU, Graphics Processing Unit), baseband processors (BP, Base Processor), Application Specific Integrated Circuit (ASIC, Application Specific Integrated Circuit), Digital Signal Processor (Digital Signal Processor, DSP), Programmable Logic Device (PLD, Programmable Logic Device), Complex Programmable Logic Device (CPLD, Complex Programmable Logic Device), Field-Programmable Gate Array (FPGA, Field-Programmable Gate Array), general-purpose processor, controller, microcontroller (MCU, Micro Controller Unit), microprocessor (Microprocessor), or other electronic components, It can also be implemented in combination with one or more radio frequency (RF, radio frequency) antennas, and is used to execute the steps of the method for dynamically indicating information in the foregoing embodiments.
  • RF radio frequency
  • Fig. 15 is a schematic diagram showing the composition and structure of a communication device according to an exemplary embodiment.
  • the communication device in this embodiment of the disclosure includes:
  • the receiving unit 151 is configured to receive a first indication message indicating that the data rate of the S-NSSAI reaches the threshold from the first control plane network element;
  • the processing unit 152 is configured to change the Session-AMBR in response to the first indication message.
  • the first indication message includes at least one of the following information: S-NSSAI identifier and authorized Session-AMBR.
  • the communication device of the embodiment of the present disclosure further includes:
  • the initiating unit (not shown in the figure) is configured to initiate a PDU session modification process to change the Session-AMBR.
  • the first indication message includes at least one of the following information: S-NSSAI identifier, corresponding MBR and GBR of the SDF.
  • the processing unit 152 is further configured to enforce the authorized QoS of the service data flow according to the PCC rule.
  • the receiving unit 151, the processing unit 152, the initiating unit, etc. may be controlled by one or more central processing units (CPUs, Central Processing Units), graphics processing units (GPUs, Graphics Processing Units), baseband processors ( BP, Base Processor), Application Specific Integrated Circuit (ASIC, Application Specific Integrated Circuit), Digital Signal Processor (Digital Signal Processor, DSP), Programmable Logic Device (PLD, Programmable Logic Device), Complex Programmable Logic Device (CPLD , Complex Programmable Logic Device), field-programmable gate array (FPGA, Field-Programmable Gate Array), general-purpose processor, controller, microcontroller (MCU, Micro Controller Unit), microprocessor (Microprocessor), or other electronic
  • the components can also be implemented in combination with one or more radio frequency (RF, radio frequency) antennas, and are used to execute the steps of the information dynamic indication method of the foregoing embodiments.
  • RF radio frequency
  • An embodiment of the present disclosure also describes a communication device, which includes:
  • the receiving unit is configured to receive a first indication message indicating that the data rate of the S-NSSAI reaches a threshold from the first control plane network element;
  • the processing unit is configured to change the corresponding MBR and GBR of the SDF in response to the first indication message.
  • the first indication message includes at least one of the following information: S-NSSAI identifier, corresponding MBR and GBR of the SDF.
  • the processing unit is further configured to: perform authorized QoS of service data flow according to PCC rules.
  • Fig. 16 is a schematic diagram showing the composition and structure of a communication device according to an exemplary embodiment.
  • the communication device in this embodiment of the disclosure includes:
  • the sending unit 161 is configured to, in response to the trigger of the policy decision, execute the access and mobility AM policy association modification process initiated by the first control plane network element, so as to notify the third control plane network element of the modification of the policy;
  • the processing unit 162 is configured to: if the data rate of the S-NSSAI reaches a threshold, the first control plane network element reduces the user slice aggregation maximum bit rate UE-Slice-AMBR, and uses the actually used data rate as the The input of the policy decision of the first control plane network element.
  • processing unit 162 is further configured to:
  • the analysis information provided by the NWDAF network element is used as input for the policy decision of the first control plane network element.
  • the sending unit 161 is further configured to: send a second indication message to the third control plane network element, where the second indication message is used to indicate the AM policy association modification for reducing UE-Slice-AMBR.
  • the sending unit 161, the processing unit 162, etc. may be controlled by one or more central processing units (CPU, Central Processing Unit), graphics processing units (GPU, Graphics Processing Unit), baseband processors (BP, Base Processor), Application Specific Integrated Circuit (ASIC, Application Specific Integrated Circuit), Digital Signal Processor (Digital Signal Processor, DSP), Programmable Logic Device (PLD, Programmable Logic Device), Complex Programmable Logic Device (CPLD, Complex Programmable Logic Device), Field-Programmable Gate Array (FPGA, Field-Programmable Gate Array), general-purpose processor, controller, microcontroller (MCU, Micro Controller Unit), microprocessor (Microprocessor), or other electronic components, It can also be implemented in combination with one or more radio frequency (RF, radio frequency) antennas, and is used to execute the steps of the method for dynamically indicating information in the foregoing embodiments.
  • RF radio frequency
  • Fig. 17 is a schematic diagram showing the composition and structure of a communication device according to an exemplary embodiment.
  • the communication device in this embodiment of the disclosure includes:
  • the receiving unit 171 is configured to receive, from the first control plane network element, a second indication message indicating that the data rate of the S-NSSAI reaches the threshold;
  • the processing unit 172 is configured to change the UE-Slice-AMBR in response to the second indication message.
  • the second indication message includes at least one of the following information: S-NSSAI identifier and authorized UE-Slice-AMBR.
  • the communication device of the embodiment of the present disclosure further includes:
  • the initiating unit (not shown in the figure) is configured to initiate a PDU session modification process to change the UE-Slice-AMBR.
  • the receiving unit 171, the processing unit 172, the initiating unit, etc. may be controlled by one or more central processing units (CPUs, Central Processing Units), graphics processing units (GPUs, Graphics Processing Units), baseband processors ( BP, Base Processor), Application Specific Integrated Circuit (ASIC, Application Specific Integrated Circuit), Digital Signal Processor (Digital Signal Processor, DSP), Programmable Logic Device (PLD, Programmable Logic Device), Complex Programmable Logic Device (CPLD , Complex Programmable Logic Device), field-programmable gate array (FPGA, Field-Programmable Gate Array), general-purpose processor, controller, microcontroller (MCU, Micro Controller Unit), microprocessor (Microprocessor), or other electronic
  • the components can also be implemented in combination with one or more radio frequency (RF, radio frequency) antennas, and are used to execute the steps of the information dynamic indication method of the foregoing embodiments.
  • RF radio frequency
  • the embodiment of the present disclosure also records a first network device such as PCF, including a processor, a transceiver, a memory, and an executable program stored on the memory and capable of being run by the processor, and the processor runs the executable program.
  • a first network device such as PCF
  • PCF personal computer
  • the program is executed, the steps of the communication method in the aforementioned embodiments are executed.
  • the embodiment of the present disclosure also describes a second network device such as SMF, which includes a processor, a transceiver, a memory, and an executable program stored on the memory and capable of being run by the processor, and the processor runs the executable program.
  • SMF second network device
  • the steps of the communication method are performed when the program is executed.
  • the embodiment of the present disclosure also describes a third network device such as AMF, which includes a processor, a transceiver, a memory, and an executable program stored on the memory and capable of being run by the processor, and the processor runs the executable program.
  • AMF third network device
  • the steps of the communication method are performed when the program is executed.
  • the embodiment of the present disclosure also describes a communication system, the system at least includes: a first control plane network element and a second control plane network element; wherein, the first control plane network element is configured to initiate SM policy association modification process, when the data rate of the S-NSSAI reaches the threshold, the authorized Session-AMBR is used to notify the modification of the policy of the second control plane network element; the second control plane network element is configured to confirm the first control plane The network element requests and starts the PDU session modification process to change the Session-AMBR.
  • the embodiment of the present disclosure also describes another communication system, the system includes at least: a first control plane network element and a second control plane network element; wherein, the first control plane network element is configured as PCF configured as Initiate the SM policy association modification process, so that when the data rate of the S-NSSAI reaches a threshold, use the MBR and GBR corresponding to the SDF to notify the modification of the second control plane network element strategy; the second control plane network element is configured to Confirming the request of the first control plane network element, and enforcing the authorized QoS of the service data flow according to the PCC rule.
  • the first control plane network element is configured as PCF configured as Initiate the SM policy association modification process, so that when the data rate of the S-NSSAI reaches a threshold, use the MBR and GBR corresponding to the SDF to notify the modification of the second control plane network element strategy
  • the second control plane network element is configured to Confirming the request of the first control plane network element, and enforcing the
  • the first control plane network element in the embodiment of the present disclosure includes a PCF
  • the second control plane network element is an SMF
  • Fig. 18 is a block diagram of a user equipment 8000 according to an exemplary embodiment.
  • the user equipment 8000 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.
  • user equipment 8000 may include one or more of the following components: processing component 8002, memory 8004, power supply component 8006, multimedia component 8008, audio component 8010, input/output (I/O) interface 8012, sensor component 8014 , and communication component 8016.
  • the processing component 8002 generally controls the overall operations of the user device 8000, such as those associated with display, telephone calls, data communications, camera operations, and recording operations.
  • the processing component 8002 may include one or more processors 8020 to execute instructions to complete all or part of the steps of the above method. Additionally, processing component 8002 may include one or more modules that facilitate interaction between processing component 8002 and other components. For example, processing component 8002 may include a multimedia module to facilitate interaction between multimedia component 8008 and processing component 8002.
  • the memory 8004 is configured to store various types of data to support operations at the device 8000 . Examples of such data include instructions for any application or method operating on the user device 8000, contact data, phonebook data, messages, pictures, videos, etc.
  • the memory 8004 can be implemented by any type of volatile or non-volatile storage device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EPROM erasable Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Magnetic or Optical Disk Magnetic Disk
  • the power supply component 8006 provides power to various components of the user equipment 8000.
  • Power supply components 8006 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for user equipment 8000 .
  • the multimedia component 8008 includes a screen providing an output interface between the user equipment 8000 and the user.
  • the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user.
  • the touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may not only sense a boundary of a touch or a swipe action, but also detect duration and pressure associated with the touch or swipe operation.
  • the multimedia component 8008 includes a front camera and/or a rear camera. When the device 8000 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capability.
  • the audio component 8010 is configured to output and/or input audio signals.
  • the audio component 8010 includes a microphone (MIC), which is configured to receive an external audio signal when the user equipment 8000 is in an operation mode, such as a call mode, a recording mode and a voice recognition mode. Received audio signals may be further stored in memory 8004 or sent via communication component 8016 .
  • the audio component 8010 also includes a speaker for outputting audio signals.
  • the I/O interface 8012 provides an interface between the processing component 8002 and a peripheral interface module, and the above peripheral interface module may be a keyboard, a click wheel, a button, and the like. These buttons may include, but are not limited to: the home button, volume buttons, start button, and lock button.
  • Sensor component 8014 includes one or more sensors for providing user equipment 8000 with status assessments of various aspects.
  • the sensor component 8014 can detect the open/closed state of the device 8000, the relative positioning of components, such as the display and the keypad of the user device 8000, and the sensor component 8014 can also detect the position of the user device 8000 or a component of the user device 8000 Changes, presence or absence of user contact with user equipment 8000, user equipment 8000 orientation or acceleration/deceleration and temperature changes of user equipment 8000.
  • Sensor assembly 8014 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact.
  • the sensor assembly 8014 may also include light sensors, such as CMOS or CCD image sensors, for use in imaging applications.
  • the sensor assembly 8014 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.
  • the communication component 8016 is configured to facilitate wired or wireless communication between the user equipment 8000 and other devices.
  • the user equipment 8000 can access a wireless network based on communication standards, such as Wi-Fi, 2G or 3G, or a combination thereof.
  • the communication component 8016 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel.
  • the communication component 8016 also includes a near field communication (NFC) module to facilitate short-range communication.
  • the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra Wide Band (UWB) technology, Bluetooth (BT) technology and other technologies.
  • RFID Radio Frequency Identification
  • IrDA Infrared Data Association
  • UWB Ultra Wide Band
  • Bluetooth Bluetooth
  • user equipment 8000 may be powered by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable Realized by a programmable gate array (FPGA), controller, microcontroller, microprocessor or other electronic components, it is used to execute the steps of the above information dynamic indication method.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGA field programmable Realized by a programmable gate array
  • controller microcontroller, microprocessor or other electronic components
  • a non-transitory computer-readable storage medium including instructions, such as a memory 8004 including instructions.
  • the above instructions can be executed by the processor 8020 of the user equipment 8000 to complete the above information dynamic indication method. step.
  • the non-transitory computer readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, among others.
  • the embodiments of the present disclosure also describe a storage medium on which an executable program is stored, and the executable program is executed by a processor to perform the steps of the communication method of the foregoing embodiments.

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Abstract

本公开是关于一种通信方法、装置及系统、网络设备及存储介质，所述方法包括：响应于策略决策的触发，第一控制面网元执行自身发起的SM策略关联修改进程，以向第二控制面网元通知策略的修改；若S-NSSAI的数据速率达到阈值，则所述第一控制面网元对Session-AMBR进行降低，将实际使用的数据速率用作所述第一控制面网元的策略决策的输入。本公开能更合理地对网络切片的传输速率进行动态分配。

Description

通信方法、装置及系统、网络设备及存储介质 技术领域
本公开涉及一种通信方法、装置及系统、网络设备及存储介质。
背景技术
网络切片可以提供完整网络功能，如无线电接入网络功能，核心网络功能和IP多媒体系统(IMS，IP Multimedia Subsystem)功能等。网络可以支持一个或多个网络切片。网络切片可以提供不同的承诺服务且专用于用户，相同的业务或切片但不同的切片区分符的切片可能具有不同的单一网络切片选择辅助信息(S-NSSAI，Single Network Slice Selection Assistance Information)。
运营商部署的多个网络切片可以提供完全相同的功能，但是针对不同的UE组。因为其提供了不同的承诺服务和/或专用于客户，在这种情况下，此类网络切片可能具有相同切片不同的S-NSSAI或相同服务类型不同的切片区分符。
UE的一组网络切片实例的选择通常是通过与网络切片选择功能(NSSF，Network SliceSelection Function)交互而由注册过程中的第一个联系的访问和移动性管理功能(AMF，Access and Mobility Management Function)触发，并且可能导致AMF的更改。每个PLMN，PDU会话属于一个且只有一个特定的网络切片实例。尽管不同的网络切片实例可能具有使用相同DNN的特定切片的PDU会话，但不同的网络切片实例不共享PDU会话。在切换过程中，源AMF通过与网络注册功能(NRF，NF Repository Function)交互来选择目标AMF。
即使由多个网络切片实例支持，网络切片类型(NEST，Generic Network  Slice Template)也会应用于网络切片。通用网络切片模板(GST，Network Slice Type)定义网络切片支持的属性。例如，最大下行链路吞吐量定义了下行链路中网络切片支持的最大数据速率，而最大上行链路吞吐量定义了上行链路中网络切片支持的最大数据速率。这些参数可用于不同的网络切片合同提供质量级别，例如具有不同最大吞吐量值的金、银和铜用户适用于保证比特速率(GBR，Guaranteed Bit Rate)和非GBR业务。
公共陆地移动网(Public Land Mobile Network，PLMN)通过配置可支持切片数据速率限制。但5G网络需要动态调整切片上下行UL和DL带宽(聚合流量)以适应网络控制需求。例如，当达到此数据速率限制时，触发PLMN中UE数据速率之间的公平性。对此，关键的问题是如何调整适用于GBR和非GBR流量的每个UE数据速率限制，以及如何调整在切片中运行的UE总数。也就是说，如何实现动态调整以满足网络切片UL和DL的数据速率的限制是5G系统网络切片功能的关键需求和问题。
发明内容
有鉴于此，本公开实施例提供了一种通信方法、装置及系统、网络设备及存储介质。
根据本公开的第一方面，提供一种通信方法，包括：
响应于策略决策的触发，第一控制面网元执行自身发起的SM策略关联修改进程，以向第二控制面网元通知策略的修改；
若切片的数据速率达到阈值，则所述第一控制面网元将实际使用的数据速率用作策略决策的输入，对会话聚合最大比特速率Session-AMBR进行降低。
在一些实施例中，所述方法还包括：
所述第一控制面网元将实际使用的数据速率与累积的数据速率和业务数据流SDF最大比特速率MBR的比率，用作所述第一控制面网元的 策略决策的输入。
在一些实施例中，所述方法还包括：
所述第一控制面网元将用户类别用作所述第一控制面网元的策略决策的输入。
在一些实施例中，所述方法还包括：
所述第一控制面网元将基于应用的偏好用作所述第一控制面网元的策略决策的输入。
在一些实施例中，所述方法还包括：
所述第一控制面网元将用户类别和基于应用的偏好和用作所述第一控制面网元的策略决策的输入。
在一些实施例中，所述第一控制面网元对Session-AMBR进行降低，包括：
所述第一控制面网元向所述第二控制面网元发送第一指示消息，所述第一指示消息用于指示降低Session-AMBR的SM策略关联修改。
在一些实施例中，所述第一指示消息包括以下信息至少之一：S-NSSAI标识、授权的Session-AMBR。
在一些实施例中，所述方法还包括：
所述第一控制面网元将由网络数据分析功能NWDAF网元提供的分析信息用作所述第一控制面网元的策略决策的输入。
根据本公开的第二方面，提供一种通信方法，所述方法包括：
响应于策略决策的触发，第一控制面网元执行自身发起的SM策略关联修改进程，以向第二控制面网元通知策略的修改；
若S-NSSAI的数据速率达到阈值，则所述第一控制面网元更新策略与计费控制PCC规则，将实际使用的数据速率用作所述第一控制面网元的策略决策的输入。
在一些实施例中，所述方法还包括：
所述第一控制面网元将切片的实际使用的数据速率与累积的数据速率(GBR数据流)和业务数据流SDF的最大比特速率MBR(Non-GBR数据流)的比，用作所述第一控制面网元的策略决策的输入。
在一些实施例中，所述方法还包括：
所述第一控制面网元将用户类别用作所述第一控制面网元的策略决策的输入。
在一些实施例中，所述方法还包括：
所述第一控制面网元将基于应用的偏好用作所述第一控制面网元的策略决策的输入。
在一些实施例中，所述方法还包括：
所述第一控制面网元将用户类别和基于应用的偏好和用作所述第一控制面网元的策略决策的输入。
在一些实施例中，所述向第二控制面网元通知策略的修改，包括：
所述第一控制面网元向所述第二控制面网元发送第一指示消息，所述第一指示消息用于指示降低相关QoS流的MBR。
在一些实施例中，所述第一指示消息包括以下信息至少之一：S-NSSAI标识、SDF对应的MBR和保证比特速率GBR。
在一些实施例中，所述方法还包括：
所述第一控制面网元将由NWDAF网元提供的分析信息用作所述第一控制面网元的策略决策的输入。
根据本公开的第三方面，提供一种通信方法，所述方法包括：
第二控制面网元从第一控制面网元接收指示S-NSSAI的数据速率达到阈值的第一指示消息；
响应于所述第一指示消息， 改变Session-AMBR。
在一些实施例中，所述第一指示消息包括以下信息至少之一：S-NSSAI标识、授权的Session-AMBR。
在一些实施例中，所述方法还包括：
所述第二控制面网元发起分组数据单元PDU会话修改进程，以改变Session-AMBR。
根据本公开的第四方面，提供一种通信方法，所述方法包括：
第二控制面网元从第一控制面网元接收指示S-NSSAI的数据速率达到阈值的第一指示消息；
响应于所述第一指示消息，改变SDF相应MBR和GBR。
在一些实施例中，所述第一指示消息包括以下信息至少之一：S-NSSAI标识、SDF相应MBR和GBR。
在一些实施例中，所述方法还包括：
所述第二控制面网元根据PCC规则执行业务数据流的授权QoS。
根据本公开的第五方面，提供一种通信方法，所述方法包括：
响应于策略决策的触发，第一控制面网元执行自身发起的接入与移动性AM策略关联修改进程，以向第三控制面网元通知策略的修改；
若S-NSSAI的数据速率达到阈值，则所述第一控制面网元对用户切片聚合最大比特速率UE-Slice-AMBR进行降低，将实际使用的数据速率用作所述第一控制面网元的策略决策的输入。
在一些实施例中，所述方法还包括：
所述第一控制面网元将将实际使用的数据速率与累积的数据速率和SDF的MBR之比，用作所述第一控制面网元的策略决策的输入。
在一些实施例中，所述方法还包括：
所述第一控制面网元将用户类别用作所述第一控制面网元的策略决策的输入。
在一些实施例中，所述方法还包括：
所述第一控制面网元将基于应用的偏好用作所述第一控制面网元的策略决策的输入。
在一些实施例中，所述方法还包括：
所述第一控制面网元将用户类别和基于应用的偏好和用作所述第一控制面网元的策略决策的输入。
在一些实施例中，所述第一控制面网元对UE-Slice-AMBR进行降低，包括：
所述第一控制面网元向所述第三控制面网元发送第二指示消息，所述第二指示消息用于指示降低UE-Slice-AMBR的AM策略关联修改。
在一些实施例中，所述第二指示消息包括以下信息至少之一：S-NSSAI标识、授权的UE-Slice-AMBR。
在一些实施例中，所述方法还包括：
所述第一控制面网元将由NWDAF网元提供的分析信息用作所述第一控制面网元的策略决策的输入。
根据本公开的第六方面，提供一种通信方法，所述方法包括：
第三控制面网元从第一控制面网元接收指示切片数据速率达到阈值的第二指示消息；
响应于所述第二指示消息，改变UE-Slice-AMBR。
在一些实施例中，所述第二指示消息包括以下信息至少之一：S-NSSAI标识、授权的UE-Slice-AMBR。
在一些实施例中，所述方法还包括：
所述第三控制面网元发起PDU会话修改进程，以改变UE-Slice-AMBR。
根据本公开的第七方面，提供一种通信装置，所述装置包括：
发送单元，配置为响应于策略决策的触发，执行第一控制面网元发起的SM策略关联修改进程，以向第二控制面网元通知策略的修改；
处理单元，配置为若切片的数据速率达到阈值，则将实际使用的数据速率用作策略决策的输入，对会话聚合最大比特速率Session-AMBR进行降低。
在一些实施例中，所述处理单元，还配置为：
将实际使用的数据速率与累积的数据速率和业务数据流SDF最大比特速率MBR的比率，用作所述第一控制面网元的策略决策的输入；或
将用户类别用作所述第一控制面网元的策略决策的输入；或
将基于应用的偏好用作所述第一控制面网元的策略决策的输入；或
将用户类别和基于应用的偏好和用作所述第一控制面网元的策略决策的输入；或
将由网络数据分析功能NWDAF网元提供的分析信息用作所述第一控制面网元的策略决策的输入。
在一些实施例中，所述发送单元，还配置为：
向所述第二控制面网元发送第一指示消息，所述第一指示消息用于指示降低Session-AMBR的SM策略关联修改。
根据本公开的第八方面，提供一种通信装置，所述装置包括：
发送单元，配置为响应于策略决策的触发，执行第一控制面网元发起的SM策略关联修改进程，以向第二控制面网元通知策略的修改；
处理单元，配置为若S-NSSAI的数据速率达到阈值，则所述第一控制面网元更新PCC规则，将实际使用的数据速率用作所述第一控制面网元的策略决策的输入。
在一些实施例中，所述处理单元，还配置为：
将实际使用的数据速率与累积的数据速率和业务数据流SDF最大比 特速率MBR的比率，用作所述第一控制面网元的策略决策的输入；或
将用户类别用作所述第一控制面网元的策略决策的输入；或
将基于应用的偏好用作所述第一控制面网元的策略决策的输入；或
将用户类别和基于应用的偏好和用作所述第一控制面网元的策略决策的输入；或
将由网络数据分析功能NWDAF网元提供的分析信息用作所述第一控制面网元的策略决策的输入。
在一些实施例中，所述发送单元，还配置为：
向所述第二控制面网元发送第一指示消息，所述第一指示消息用于指示降低相关QoS流的MBR。
根据本公开的第九方面，提供一种通信装置，所述装置包括：
接收单元，配置为从第一控制面网元接收指示S-NSSAI的数据速率达到阈值的第一指示消息；
处理单元，配置为响应于所述第一指示消息，改变Session-AMBR。
在一些实施例中，所述第一指示消息包括以下信息至少之一：S-NSSAI标识、授权的Session-AMBR。
根据本公开的第十方面，提供一种通信装置，所述装置包括：
接收单元，配置为从第一控制面网元接收指示S-NSSAI的数据速率达到阈值的第一指示消息；
处理单元，配置为响应于所述第一指示消息，改变SDF相应MBR和GBR。
在一些实施例中，所述第一指示消息包括以下信息至少之一：S-NSSAI标识、SDF相应MBR和GBR。
在一些实施例中，所述处理单元，还配置为：
根据PCC规则执行业务数据流的授权QoS。
根据本公开的第十一方面，提供一种通信装置，所述装置包括：
发送单元，配置为响应于策略决策的触发，执行第一控制面网元发起的接入与移动性AM策略关联修改进程，以向第三控制面网元通知策略的修改；
处理单元，配置为若S-NSSAI的数据速率达到阈值，则所述第一控制面网元对用户切片聚合最大比特速率UE-Slice-AMBR进行降低，将实际使用的数据速率用作所述第一控制面网元的策略决策的输入。
在一些实施例中，所述处理单元，还配置为：
将实际使用的数据速率与累积的数据速率和SDF的MBR的比，用作所述第一控制面网元的策略决策的输入；或
将用户类别用作所述第一控制面网元的策略决策的输入；或
将基于应用的偏好用作所述第一控制面网元的策略决策的输入；或
将用户类别和基于应用的偏好和用作所述第一控制面网元的策略决策的输入；或
将由NWDAF网元提供的分析信息用作所述第一控制面网元的策略决策的输入。
在一些实施例中，所述发送单元，还配置为：
向所述第三控制面网元发送第二指示消息，所述第二指示消息用于指示降低UE-Slice-AMBR的AM策略关联修改。
根据本公开的第十二方面，提供一种通信装置，所述装置包括：
接收单元，配置为从第一控制面网元接收指示S-NSSAI的数据速率达到阈值的第二指示消息；
处理单元，配置为响应于所述第二指示消息，改变UE-Slice-AMBR。
在一些实施例中，所述第二指示消息包括以下信息至少之一：S-NSSAI标识、授权的UE-Slice-AMBR。
在一些实施例中，所述装置还包括：
发起单元，配置为发起PDU会话修改进程，以改变UE-Slice-AMBR。
根据本公开的第十三方面，提供一种第一网络设备，包括处理器、收发器、存储器及存储在存储器上并能够由所述处理器运行的可执行程序，所述处理器运行所述可执行程序时执行所述的通信方法的步骤。
根据本公开的第十四方面，提供一种第二网络设备，包括处理器、收发器、存储器及存储在存储器上并能够由所述处理器运行的可执行程序，所述处理器运行所述可执行程序时执行如权利要求17至21任一项所述的通信方法的步骤。
根据本公开的第十五方面，提供一种第三网络设备，包括处理器、收发器、存储器及存储在存储器上并能够由所述处理器运行的可执行程序，所述处理器运行所述可执行程序时执行如权利要求30至32任一项所述的通信方法的步骤。
根据本公开的第十六方面，提供一种通信系统，所述系统至少包括：第一控制面网元和第二控制面网元；其中，所述第一控制面网元被配置为发起SM策略关联修改过程，以在S-NSSAI的数据速率达到阈值时，用授权Session-AMBR通知所述第二控制面网元策略的修改；所述第二控制面网元被配置为确认所述第一控制面网元请求，并启动PDU会话修改进程以改变Session-AMBR。
根据本公开的第十七方面，提供一种通信系统，所述系统至少包括：第一控制面网元和第二控制面网元；其中，所述第一控制面网元被配置为PCF被配置成发起SM策略关联修改过程，以在S-NSSAI的数据速率达到阈值时，用SDF相应MBR和GBR通知所述第二控制面网元策略的修改；所述第二控制面网元被配置为确认所述第一控制面网元请求，并根据PCC规则强制执行业务数据流的授权QoS。
根据本公开的第十八方面，提供一种存储介质，其上存储由可执行程序，所述可执行程序被处理器执行时实现所述的通信方法的步骤。
本公开实施例的通信方法、装置及系统、网络设备及存储介质，能够根据当前网络切片的传输速率情况，由PCF或其他网元发起PCF利用实际使用数据率作为输入来确定分片带宽控制，可以精确地执行切片带宽控制。本公开实施例能够更佳地为切片网络提供更佳的访问体验。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本发明实施例，并与说明书一起用于解释本发明实施例的原理。
图1是根据一示例性实施例示出的无线通信系统的结构示意图；
图2是根据一示例性实施例示出的通信方法的流程示意图；
图3是根据一示例性实施例示出的通信方法的流程示意图；
图4是根据一示例性实施例示出的通信方法的流程示意图；
图5是根据一示例性实施例示出的通信方法的流程示意图；
图6是根据一示例性实施例示出的PCF及SMF交互通信示意图；
图7是根据一示例性实施例示出的UE请求会话建立的通信示意图；
图8是根据一示例性实施例示出的SM策略关联终止的通信示意图；
图9是根据一示例性实施例示出的通信方法的流程示意图；
图10是根据一示例性实施例示出的通信方法的流程示意图；
图11是根据一示例性实施例示出的AM策略关联修改的通信示意图；
图12是根据一示例性实施例示出的PCF发起的AM策略关联修改的通信示意图；
图13是根据一示例性实施例示出的通信装置的组成结构示意图；
图14是根据一示例性实施例示出的通信装置的组成结构示意图；
图15是根据一示例性实施例示出的通信装置的组成结构示意图；
图16是根据一示例性实施例示出的通信装置的组成结构示意图；
图17是根据一示例性实施例示出的通信装置的组成结构示意图；
图18是根据一示例性实施例示出的一种用户设备的组成结构示意图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开实施例相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本公开实施例的一些方面相一致的装置和方法的例子。
在本公开实施例使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本公开实施例。在本公开实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解，尽管在本公开实施例可能采用术语第一、第二、第三等来描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本公开实施例范围的情况下，第一信息也可以被称为第二信息，类似地，第二信息也可以被称为第一信息。取决于语境，如在此所使用的词语“如果”可以被解释成为“在……时”或“当……时”或“响应于确定”。
请参考图1，其示出了本公开实施例提供的一种无线通信系统的结构示意图。如图1所示，无线通信系统是基于蜂窝移动通信技术的通信系统，该无线通信系统可以包括：若干个终端11以及若干个基站12。
其中，终端11可以是指向用户提供语音和/或数据连通性的设备。终端11可以经无线接入网(Radio Access Network，RAN)与一个或多个核心网 进行通信，终端11可以是物联网终端，如传感器设备、移动电话(或称为“蜂窝”电话)和具有物联网终端的计算机，例如，可以是固定式、便携式、袖珍式、手持式、计算机内置的或者车载的装置。例如，站(Station，STA)、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、移动台(mobile)、远程站(remote station)、接入点、远程终端(remote terminal)、接入终端(access terminal)、用户装置(user terminal)、用户代理(user agent)、终端(user device)、或用户终端(user equipment，UE)。或者，终端11也可以是无人飞行器的设备。或者，终端11也可以是车载设备，比如，可以是具有无线通信功能的行车电脑，或者是外接行车电脑的无线通信设备。或者，终端11也可以是路边设备，比如，可以是具有无线通信功能的路灯、信号灯或者其它路边设备等。
基站12可以是无线通信系统中的网络侧设备。其中，该无线通信系统可以是第四代移动通信技术(the 4th generation mobile communication，4G)系统，又称长期演进(Long Term Evolution，LTE)系统；或者，该无线通信系统也可以是5G系统，又称新空口(new radio，NR)系统或5G NR系统。或者，该无线通信系统也可以是任一代系统。其中，5G系统中的接入网可以称为NG-RAN(New Generation-Radio Access Network，新一代无线接入网)。或者，MTC系统。
其中，基站12可以是4G系统中采用的演进型基站(eNB)。或者，基站12也可以是5G系统中采用集中分布式架构的基站(gNB)。当基站12采用集中分布式架构时，通常包括集中单元(Central Unit，CU)和至少两个分布单元(Distributed Unit，DU)。集中单元中设置有分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层、无线链路层控制协议(Radio Link Control，RLC)层、媒体访问控制(Media Access Control，MAC)层的协议栈；分布单元中设置有物理(Physical，PHY)层协议栈，本公开实 施例对基站12的具体实现方式不加以限定。
基站12和终端11之间可以通过无线空口建立无线连接。在不同的实施方式中，该无线空口是基于第四代移动通信网络技术(4G)标准的无线空口；或者，该无线空口是基于第五代移动通信网络技术(5G)标准的无线空口，比如该无线空口是新空口；或者，该无线空口也可以是基于5G的更下一代移动通信网络技术标准的无线空口。
在一些实施例中，终端11之间还可以建立E2E(End to End，端到端)连接。比如车联网通信(vehicle to everything，V2X)中的V2V(vehicle to vehicle，车对车)通信、V2I(vehicle to Infrastructure，车对路边设备)通信和V2P(vehicle to Pedestrian，车对人)通信等场景。
在一些实施例中，上述无线通信系统还可以包含网络管理设备13。
若干个基站12分别与网络管理设备13相连。其中，网络管理设备13可以是无线通信系统中的核心网设备，比如，该网络管理设备13可以是演进的数据分组核心网(Evolved Packet Core，EPC)中的移动性管理实体(Mobility Management Entity，MME)。或者，该网络管理设备也可以是其它的核心网设备，比如服务网关(Serving GateWay，SGW)、公用数据网网关(Public Data Network GateWay，PGW)、策略与计费规则功能单元(Policy and Charging Rules Function，PCRF)或者归属签约用户服务器(Home Subscriber Server，HSS)等。对于网络管理设备13的实现形态，本公开实施例不做限定。
本公开实施例涉及的执行主体包括但不限于：蜂窝移动通信系统中的终端(UE，User Equipment)，以及蜂窝移动通信的基站等。
策略控制功能(PCF，Policy Control Function)请求AMF报告分配给每个S-NSSAI的订阅永久标识(SUPI，SUbscription Permanent Identifier)的切片最大比特速率(MBR)，该S-NSSAI具有通过激活策略控制请求触 发器而建立的访问和移动策略关联(Access and Mobility Policy Association)。当PCF接收并确定每个S-NSSAI的SUPI的Slice MBR时，PCF从剩余数据速率中减去Slice MBR的值并将其存储。
如果该S-NSSAI的剩余数据速率达到阈值，则PCF可以终止与AMF的访问和移动策略关联，或更改青铜用户的切片MBR值。目前解决方案的主要问题是：PCF根据分配的数据速率而不是实际使用的数据速率终止了关联或更改切片MBR值。
一方面，一些UE的实际使用的数据速率几乎达到分配的速率，但是对于其他UE，未使用数据速率的量非常大。另一方面，青铜用户的实际使用的数据速率可能几乎达到了分配的数据速率，但是对于金用户来说，未使用数据速率的数量可能非常大。
简而言之，当实际的数据速率资源足够时，终止了访问和移动策略，或者降低了优先级较低的订户的数据速率。很显然，这种切片的数据速率资源分配是极不合理的。
以下详细阐述本公开实施例的技术方案，以解决上述的数据速率资源分配不合理的问题。
图2是根据一示例性实施例示出的通信方法的流程示意图，如图2所示，本公开实施例的通信方法应用于网络设备侧，网络设备包括核心网网网元的控制面网元等，本公开实施例的通信方法包括以下处理步骤：
步骤201，响应于策略决策的触发，第一控制面网元执行自身发起的会话管理SM策略关联修改进程，以向第二控制面网元通知策略的修改。
本公开实施例中，作为一种实现方式，第一控制面网元包括策略控制功能(PCF，Policy Control Function)网元。第二控制面网元包括会话管理功能(SMF，Session Management Function)网元。
作为一种示例，PCF启动会话管理(SM，Session Management)策略 关联修改(SM Policy Association Modification)进程，以降级会话聚合最大比特率(Session-AMBR，Session Aggregate Maximum Bite Rate)，并利用实际使用数据速率作为输入。PCF基于内部PCF事件或由PCF的其他对等方如应用层功能(AF，Application Function)网元、统一数据仓库(UDR，Unified Data Repository)、网络数据分析功能(NWDAF，Network Data Analysis Function)网元等触发而启动SM Policy Association Modification进程。
步骤202，若切片的数据速率达到阈值，则所述第一控制面网元将实际使用的数据速率用作策略决策的输入，对会话聚合最大比特速率Session-AMBR进行降低。
本公开实施例中，作为一种替代方式，所述第一控制面网元将实际使用的数据速率与累积的数据速率和业务数据流SDF最大比特速率MBR的比率，用作所述第一控制面网元的策略决策的输入。
本公开实施例中，作为一种替代方式，所述第一控制面网元将用户类别用作所述第一控制面网元的策略决策的输入。
作为一种替代方式，所述第一控制面网元将基于应用的偏好用作所述第一控制面网元的策略决策的输入。
作为一种替代方式，所述第一控制面网元将用户类别和基于应用的偏好和用作所述第一控制面网元的策略决策的输入。
本公开实施例中，所述第一控制面网元对Session-AMBR进行降低，包括：
所述第一控制面网元向所述第二控制面网元发送第一指示消息，所述第一指示消息用于指示降低Session-AMBR的SM策略关联修改。所述第一指示消息包括以下信息至少之一：S-NSSAI标识、授权的Session-AMBR。
作为一种实现方式，第一指示消息包括会话管理策略关联修改消息(SM Policy Association Modification message)。
作为一种实现方式，所述第一控制面网元将由NWDAF网元提供的分析信息(analytics information)用作所述第一控制面网元的策略决策的输入。
本公开实施例的通信方法，能够系统、精确地实现动态调整Session-AMBR，以满足每个网片的数据速率限制，并能根据实际使用数据速率调整每个网络切片的数据速率。
图3是根据一示例性实施例示出的通信方法的流程示意图，如图3所示，本公开实施例的通信方法包括以下处理步骤：
步骤301，第二控制面网元从第一控制面网元接收指示S-NSSAI的数据速率达到阈值的第一指示消息。
所述第一指示消息包括以下信息至少之一：S-NSSAI标识、授权的Session-AMBR。
步骤302，第二控制面网元响应于所述第一指示消息，改变Session-AMBR。
所述第二控制面网元发起分组数据单元PDU会话修改进程，以改变Session-AMBR。
这里，第一指示消息包括SM Policy Association Modification message。
图4是根据一示例性实施例示出的通信方法的流程示意图，如图4所示，本公开实施例的通信方法应用于网络设备侧，网络设备包括核心网网网元的控制面网元等，本公开实施例的通信方法包括以下处理步骤：
步骤401，响应于策略决策的触发，第一控制面网元执行自身发起的SM策略关联修改进程，以向第二控制面网元通知策略的修改。
本公开实施例中，作为一种实现方式，第一控制面网元包括策略控制 功能(PCF，Policy Control Function)网元。第二控制面网元包括会话管理功能(SMF，Session Management Function)网元。
作为一种示例，PCF启动会话管理(SM，Session Management)策略关联修改(SM Policy Association Modification)进程，以降级会话聚合最大比特率(Session-AMBR，Session Aggregate Maximum Bite Rate)，并利用实际使用数据速率作为输入。PCF基于内部PCF事件或由PCF的其他对等方如应用层功能(AF，Application Function)网元、统一数据仓库(UDR，Unified Data Repository)、网络数据分析功能(NWDAF，Network Data Analysis Function)网元等触发而启动SM Policy Association Modification进程。
步骤402，若S-NSSAI的数据速率达到阈值，则所述第一控制面网元更新策略与计费控制PCC规则，将实际使用的数据速率用作所述第一控制面网元的策略决策的输入。
所述向第二控制面网元通知策略的修改，包括：所述第一控制面网元向所述第二控制面网元发送第一指示消息，所述第一指示消息用于指示降低相关QoS流的MBR。所述第一指示消息包括以下信息至少之一：S-NSSAI标识、SDF对应的MBR和GBR。第一指示消息包括SM Policy Association Modification message。
本公开实施例中，作为一种替代方式，所述第一控制面网元将切片的实际使用的数据速率与累积的数据速率和业务数据流SDF的最大比特速率MBR的比，用作所述第一控制面网元的策略决策的输入。
本公开实施例中，作为一种替代方式，所述第一控制面网元将用户类别用作所述第一控制面网元的策略决策的输入。
作为一种替代方式，所述第一控制面网元将基于应用的偏好用作所述第一控制面网元的策略决策的输入。
作为一种替代方式，所述第一控制面网元将用户类别和基于应用的偏好和用作所述第一控制面网元的策略决策的输入。
作为一种实现方式，所述第一控制面网元将由NWDAF网元提供的分析信息(analytics information)用作所述第一控制面网元的策略决策的输入。
图5是根据一示例性实施例示出的通信方法的流程示意图，如图5所示，本公开实施例的通信方法包括以下处理步骤：
步骤501，第二控制面网元从第一控制面网元接收指示S-NSSAI的数据速率达到阈值的第一指示消息。
所述第一指示消息包括以下信息至少之一：S-NSSAI标识、SDF相应MBR和GBR。
步骤502，第二控制面网元响应于所述第一指示消息，改变SDF相应MBR和GBR。
具体地，第二控制面网元根据PCC规则强制执行业务数据流的授权QoS。
这里，第一指示消息包括SM Policy Association Modification message。
图6是根据一示例性实施例示出的PCF及SMF交互通信示意图，如图6所示，本公开实施例的PCF与SMF交互通信包括以下处理步骤：
步骤1a，作为一种实施方式，可选地，例如由于AF会话信令，AF通过调用Npcf_PolicyAuthorization_Create Request或Npcf_PolicyAuthorization_Update Request服务操作向PCF提供/撤销业务信息。PCF响应AF，以便发起Session-AMBR调整。
步骤1b，作为另一种实现方式，使用NWDAF服务将切片数据速率分析从NWDAF公开给PCF。可以从NWDAF请求analytics(如Analytics ID)。可选地，一些内部事件(例如计时器或基于从NWDAF请求和接收 的分析信息的本地决策)在PCF发生，PCF响应NWDAF以便发起Session-AMBR调整。
步骤1c，作为另一种实现方式，UDR通过调用Nudr_DM_Notify(通知相关ID、策略数据、用户永久标识(SUPI，Subscription Permanent Identifier)、更新的数据，“PDU会话策略控制数据”/“最大数据速率)向PCF通知策略订阅更改。PCF响应UDR。
步骤1a、1b或1c可以由PCF的本地决策触发，也可以基于PCF的其他对等方如AF，NWDAF，UDR)来触发，在触发之前，相关网元与PCF建立SM策略关联。只要确保PCF以后的策略决策可以使用所接收到的相关信息。
步骤2，PCF确定S-NSSAI的数据速率达到阈值，则PCF利用已的使用数据速率作为输入并做出策略决定。PCF发起会话管理策略关联修改以降级Session-AMBR，调整切片数据速率；或根据需要终止用于切片数据速率控制的会话管理策略关联。
步骤3，PCF执行PCF启动的SM策略关联修改程序，以通知SMF有关策略的修改；如果用于S-NSSAI的数据速率达到阈值，则PCF可以确定需要将更新后的策略信息(降级Session-AMBR，将利用的数据速率用作其策略决策的输入)发送给SMF。PCF也可能决定从NWDAF订阅新的Analytics ID。
如果在步骤1a中AF提供了背景数据传输参考ID(Background Data Transfer Reference ID)，则PCF可以通过调用Nudr_DM_Query(BDT参考ID、策略数据、背景数据传输)服务从UDR来检索。
步骤4，如果PCF在步骤3中确定SMF需要更新的策略信息，则PCF发出具有有关PDU会话的可能更新的策略信息的Npcf_SMPolicyControl_UpdateNotify请求，请求中包括S-NSSAI标识符 和授权的Session-AMBR。
步骤5，SMF通过Npcf_SMPolicyControl_UpdateNotify响应获知PCF请求。SMF可以通知UPF和无线接入网NG-RAN分别减小下行链路和上行链路的会话-AMBR。当UE将上行用户面数据发送到NG-RAN时，NG-RAN会根据从SMF接收的更新后的Session-AMBR值，对非GBR流强制实施上行数据速率限制。对于GBR流程，如果在SMF中安装或激活了一个或多个PCC规则，则SMF可能会降级分配给SDF模板相应的MBR。
如果从PCF集中的新PCF实例中收到Npcf_SMPolicyControl_UpdateNotify请求，则SMF将存储与新PCF实例的SM策略关联。
作为一种替代方式，参见图6，PCF启动SM策略关联修改程序以降级Session-AMBR，PCF可以将实际使用的数据速率与累积的数据速率和业务数据流SDF最大比特速率MBR的比率用作为输入。具体包括以下处理步骤：
步骤1a，作为一种实施方式，可选地，例如由于AF会话信令，AF通过调用Npcf_PolicyAuthorization_Create Request或Npcf_PolicyAuthorization_Update Request服务操作向PCF提供/撤销业务信息。PCF响应AF，以便发起Session-AMBR调整。
步骤1b，作为另一种实现方式，使用NWDAF服务将切片数据速率分析从NWDAF公开给PCF。可以从NWDAF请求analytics(如Analytics ID)。可选地，一些内部事件(例如计时器或基于从NWDAF请求和接收的分析信息的本地决策)在PCF发生，PCF响应NWDAF以便发起Session-AMBR调整。
步骤1c，作为另一种实现方式，UDR通过调用Nudr_DM_Notify(通 知相关ID、策略数据、用户永久标识(SUPI，Subscription Permanent Identifier)、更新的数据，“PDU会话策略控制数据”/“最大数据速率)向PCF通知策略订阅更改。PCF响应UDR。
步骤1a、1b或1c可以由PCF的本地决策触发，也可以基于PCF的其他对等方如AF，NWDAF，UDR)来触发，在触发之前，相关网元与PCF建立SM策略关联。只要确保PCF以后的策略决策可以使用所接收到的相关信息。
步骤2，PCF确定S-NSSAI的数据速率达到阈值，则PCF将实际使用的数据速率与累积的数据速率和业务数据流SDF最大比特速率MBR的比率作为输入并做出策略决定。PCF发起会话管理策略关联修改以更新降级Session-AMBR，调整切片数据速率；或根据需要终止用于切片数据速率控制的会话管理策略关联。
步骤3，PCF执行PCF启动的SM策略关联修改程序，以通知SMF有关策略的修改；如果用于S-NSSAI的数据速率达到阈值，则PCF可以确定需要将更新后的策略信息(降级Session-AMBR，将利用的数据速率用作其策略决策的输入)发送给SMF。PCF也可能决定从NWDAF订阅新的Analytics ID。
如果在步骤1a中AF提供了背景数据传输参考ID(Background Data Transfer Reference ID)，则PCF可以通过调用Nudr_DM_Query(BDT参考ID、策略数据、背景数据传输)服务从UDR来检索。
步骤4，如果PCF在步骤3中确定SMF需要更新的策略信息，则PCF发出具有有关PDU会话的可能更新的策略信息的Npcf_SMPolicyControl_UpdateNotify请求，请求中包括S-NSSAI标识符和授权的Session-AMBR。
步骤5，SMF通过Npcf_SMPolicyControl_UpdateNotify响应获知PCF 请求。SMF可以通知UPF和无线接入网NG-RAN分别减小下行链路和上行链路的会话-AMBR。当UE将上行用户面数据发送到NG-RAN时，NG-RAN会根据从SMF接收的更新后的Session-AMBR值，对非GBR流强制实施上行数据速率限制。对于GBR流程，如果在SMF中安装或激活了一个或多个PCC规则，则SMF可能会降低分配给SDF模板相应的MBR。
本示例中，参见图6，PCF启动SM策略关联修改进程，以实际使用数据速率和用户类别作为输入来降级Session-AMBR。具体包括以下步骤：
步骤1a，作为一种实施方式，可选地，例如由于AF会话信令，AF通过调用Npcf_PolicyAuthorization_Create Request或Npcf_PolicyAuthorization_Update Request服务操作向PCF提供/撤销业务信息。PCF响应AF，以便发起Session-AMBR调整。
步骤1b，作为另一种实现方式，使用NWDAF服务将切片数据速率分析从NWDAF公开给PCF。可以从NWDAF请求analytics(如Analytics ID)。可选地，一些内部事件(例如计时器或基于从NWDAF请求和接收的分析信息的本地决策)在PCF发生，PCF响应NWDAF以便发起Session-AMBR调整。
步骤1c，作为另一种实现方式，UDR通过调用Nudr_DM_Notify(通知相关ID、策略数据、用户永久标识(SUPI，Subscription Permanent Identifier)、更新的数据，“PDU会话策略控制数据”/“最大数据速率)向PCF通知策略订阅更改。PCF响应UDR。
步骤1a、1b或1c可以由PCF的本地决策触发，也可以基于PCF的其他对等方如AF，NWDAF，UDR)来触发，在触发之前，相关网元与PCF建立SM策略关联。只要确保PCF以后的策略决策可以使用所接收 到的相关信息。
步骤2，PCF确定S-NSSAI的数据速率达到阈值，则PCF利用实际使用的数据速率和用户类别作为输入并做出策略决定。PCF发起会话管理策略关联修改以更新降级Session-AMBR，调整切片数据速率；或根据需要终止用于切片数据速率控制的会话管理策略关联。
步骤3，PCF执行PCF启动的SM策略关联修改程序，以通知SMF有关策略的修改；如果用于S-NSSAI的数据速率达到阈值，则PCF可以确定需要将更新后的策略信息(降级Session-AMBR，将利用的数据速率用作其策略决策的输入)发送给SMF。PCF也可能决定从NWDAF订阅新的Analytics ID。
如果在步骤1a中AF提供了背景数据传输参考ID(Background Data Transfer Reference ID)，则PCF可以通过调用Nudr_DM_Query(BDT参考ID、策略数据、背景数据传输)服务从UDR来检索。
步骤4，如果PCF在步骤3中确定SMF需要更新的策略信息，则PCF发出具有有关PDU会话的可能更新的策略信息的Npcf_SMPolicyControl_UpdateNotify请求，请求中包括S-NSSAI标识符和授权的Session-AMBR。
步骤5，SMF通过Npcf_SMPolicyControl_UpdateNotify响应获知PCF请求。SMF可以通知UPF和无线接入网NG-RAN分别减小下行链路和上行链路的会话-AMBR。当UE将上行用户面数据发送到NG-RAN时，NG-RAN会根据从SMF接收的更新后的Session-AMBR值，对非GBR流强制实施上行数据速率限制。对于GBR流程，如果在SMF中安装或激活了一个或多个PCC规则，则SMF可能会降低分配给SDF模板相应的MBR。
本示例中，参见图6，PCF启动SM策略关联修改进程，以使用实际 使用数据速率和基于应用的偏好作为输入来降级Session-AMBR。具体包括以下步骤：
步骤1a，作为一种实施方式，可选地，例如由于AF会话信令，AF通过调用Npcf_PolicyAuthorization_Create Request或Npcf_PolicyAuthorization_Update Request服务操作向PCF提供/撤销业务信息。PCF响应AF，以便发起Session-AMBR调整。
步骤1b，作为另一种实现方式，使用NWDAF服务将切片数据速率分析从NWDAF公开给PCF。可以从NWDAF请求analytics(如Analytics ID)。可选地，一些内部事件(例如计时器或基于从NWDAF请求和接收的分析信息的本地决策)在PCF发生，PCF响应NWDAF以便发起Session-AMBR调整。
步骤1c，作为另一种实现方式，UDR通过调用Nudr_DM_Notify(通知相关ID、策略数据、用户永久标识(SUPI，Subscription Permanent Identifier)、更新的数据，“PDU会话策略控制数据”/“最大数据速率)向PCF通知策略订阅更改。PCF响应UDR。
步骤1a、1b或1c可以由PCF的本地决策触发，也可以基于PCF的其他对等方如AF，NWDAF，UDR)来触发，在触发之前，相关网元与PCF建立SM策略关联。只要确保PCF以后的策略决策可以使用所接收到的相关信息。
步骤2，PCF确定S-NSSAI的数据速率达到阈值，则PCF利用实际使用的数据速率和用户类别作为输入并做出策略决定。PCF发起会话管理策略关联修改以更新降级Session-AMBR，调整切片数据速率；或根据需要终止用于切片数据速率控制的会话管理策略关联。
基于应用的偏好包括及时有效的偏好应用，例如UE1喜欢在办公室休息期间使用VR游戏，并喜欢在晚上9点之后的休息时间使用流媒体服 务。应用偏好配置文件可以是由5G系统基于UE使用模式是预设的等。
步骤3，PCF执行PCF启动的SM策略关联修改程序，以通知SMF有关策略的修改；如果用于S-NSSAI的数据速率达到阈值，则PCF可以确定需要将更新后的策略信息(降级Session-AMBR，将利用的数据速率用作其策略决策的输入)发送给SMF。PCF也可能决定从NWDAF订阅新的Analytics ID。
如果在步骤1a中AF提供了背景数据传输参考ID(Background Data Transfer Reference ID)，则PCF可以通过调用Nudr_DM_Query(BDT参考ID、策略数据、背景数据传输)服务从UDR来检索。
步骤4，如果PCF在步骤3中确定SMF需要更新的策略信息，则PCF发出具有有关PDU会话的可能更新的策略信息的Npcf_SMPolicyControl_UpdateNotify请求，请求中包括S-NSSAI标识符和授权的Session-AMBR。
步骤5，SMF通过Npcf_SMPolicyControl_UpdateNotify响应获知PCF请求。SMF可以通知UPF和无线接入网NG-RAN分别减小下行链路和上行链路的会话-AMBR。当UE将上行用户面数据发送到NG-RAN时，NG-RAN会根据从SMF接收的更新后的Session-AMBR值，对非GBR流强制实施上行数据速率限制。对于GBR流程，如果在SMF中安装或激活了一个或多个PCC规则，则SMF可能会降低分配给SDF模板相应的MBR。
图7是根据一示例性实施例示出的UE请求会话建立的通信示意图，如图7所示，本公开实施例的具有切片日期速率动态调整的UE请求的PDU会话建立和修改过程包括以下处理步骤：
步骤1，PCF支持每个S-NSSAI的总带宽的监视和实施，可以从UDR接收每个S-NSSAI的切片特定策略控制信息。
步骤2，UE启动PDU会话建立过程，会话建立消息中包括S-NSSAI。(从UE到AMF，AMF选择SMF并启动PDU会话建立，如TS 23.501中所述，这里不再赘述其细节)。
步骤3，SMF可以执行SM策略关联建立进程，以与PCF建立SM策略关联，并获得PDU会话的默认PCC规则。如果步骤2中的请求类型指示“现有PDU会话”，则SMF可以提供有关SMF启动的SM策略关联修改进程已满足的策略控制请求触发条件的信息。SMF将数据速率检查请求发送到PCF，请求中包括待建立的所有GBR流的S-NSSAI、UE-ID、PDU会话ID、会话AMBR和MFBR值。
步骤4，PCF检查S-NSSAI的切片数据速率是否达到阈值。该阈值可以由运营商策略根据总切片带宽设置。PCF将分配给PDU会话的授权Session-AMBR的值减去该S-NSSAI的数据速率，并将其存储在UDR中。
步骤5，如果S-NSSAI的数据速率未达到阈值，则PCF将向SMF提供UL和/或DL的Session-AMBR或MBR的策略信息。(与TS 23.503和23.502中所述的相同)
步骤6，SMF将PDU会话响应发送给UE(与TS 23.501中所述相同，发送给AMF并转发给RAN和UE)。
步骤7a，可替代地，使用NWDAF业务被用于将切片数据速率分析从NWDAF向PCF公开。Analytics(如Analytics ID)可以从NWDAF来请求。可选地，在PCF发生一些内部事件(例如计时器或基于从NWDAF请求和接收的分析信息的本地决策)。
步骤7，如果S-NSSAI的数据速率达到阈值，则PCF可以使用实际使用的数据速率作为输入并做出策略决定。PCF启动会话管理策略关联修改以更新降级的Session-AMBR，调整切片数据速率。PCF执行PCF发起的SM策略关联修改过程，以通知SMF有关策略的修改；PCF可以 确定将更新的策略信息(降级Session-AMBR/MBR，使用实际使用的数据速率作为其策略决策的输入)需要发送给SMF。PCF也可以决定从NWDAF订阅新的Analytics ID。
步骤9，如果PCF在步骤8中确定SMF需要更新的策略信息，则PCF发布有关PDU会话的Npcf_SMPolicyControl_UpdateNotify请求，请求中包括S-NSSAI标识符和授权的Session-AMBR。
步骤10，SMF通过Npcf_SMPolicyControl_UpdateNotify获知PCF请求。SMF可以请求PDU会话修改程序，通知UPF和NG-RAN分别降低下行链路和上行链路的Session-AMBR。当UE将上行用户面数据发送到NG-RAN时，NG-RAN会根据从SMF接收的更新后的Session-AMBR值，对非GBR流实施上行数据速率限制，这与TS 23.501中相同。对于GBR流程，如果在SMF中安装或激活了一个或多个PCC规则，则SMF可能会降低分配给SDF模板相应的MBR。
图8是根据一示例性实施例示出的SM策略关联终止的通信示意图，如图8所示，本公开实施例的会话管理策略终止的进行可以由PCF或SMF启动：
步骤1，PCF可以调用Npcf_SMPolicyControl_UpdateNotify业务操作来请求释放PDU会话。SMF确认该请求。
步骤2，SMF可以调用Npcf_SMPolicyControl_Delete业务操作，以请求删除与PCF的SM策略关联。SMF向PCF提供相关的操作信息。
步骤3，当从步骤2接收到请求时，PCF将找到需要通知AF的PCC规则，并删除PDU会话的PCC规则。
如果SMF报告的PCC规则已删除，并且PCF支持监视和实施每个S-NSSAI的总带宽，则PCF将更新UDR中该S-NSSAI的数据速率。
步骤4，SMF删除所有与PDU会话相关联的PDU会话的策略信息。
步骤5，PCF可能会取消订阅NWDAF的分析。
步骤6，PCF删除与终止的PDU会话有关的信息，并向SMF确认PDU会话的PCF处理已终止。此交互是对步骤2中SMF请求的响应。
步骤7，PCF更新UDR中该S-NSSAI的数据速率。
步骤8，订阅了通知，PCF可以(例如，如果是(DNN，S-NSSAI)对上的最后一个PDU会话)通过调用Nudr_DM_Unsubscribe(预订关联ID)从UDR取消订阅PDU会话相关数据修改的通知。
图9是根据一示例性实施例示出的通信方法的流程示意图，如图9所示，本公开实施例的通信方法包括：
步骤901，响应于策略决策的触发，第一控制面网元执行自身发起的接入与移动性AM策略关联修改进程，以向第三控制面网元通知策略的修改。
本公开实施例中，作为一种实现方式，第一控制面网元包括PCF，Policy Control Function网元。第三控制面网元包括接入和移动性管理功能(AMF，Access and Mobility Management Function)网元。
步骤902，若S-NSSAI的数据速率达到阈值，则所述第一控制面网元对用户切片聚合最大比特速率UE-Slice-AMBR进行降低，将实际使用的数据速率用作所述第一控制面网元的策略决策的输入。
所述第一控制面网元对UE-Slice-AMBR进行降低，包括：
所述第一控制面网元向所述第三控制面网元发送第二指示消息，所述第二指示消息用于指示降低UE-Slice-AMBR的AM策略关联修改。
所述第二指示消息包括以下信息至少之一：S-NSSAI标识、授权的UE-Slice-AMBR。
所述第二指示消息包括接入和移动性管理策略关联修改消息(AM Policy Association Modification message)。
作为一种替代方式，所述第一控制面网元将实际使用的数据速率与累积的数据速率和业务数据流SDF最大比特速率MBR的比率用作所述第一控制面网元的策略决策的输入。
作为一种替代方式，所述第一控制面网元将用户类别用作所述第一控制面网元的策略决策的输入。
作为一种替代方式，所述第一控制面网元将基于应用的偏好用作所述第一控制面网元的策略决策的输入。
作为一种替代方式，所述第一控制面网元将用户类别和基于应用的偏好和用作所述第一控制面网元的策略决策的输入。
作为一种替代方式，所述第一控制面网元将由NWDAF网元提供的分析信息用作所述第一控制面网元的策略决策的输入。
图10是根据一示例性实施例示出的通信方法的流程示意图，如图10所示，本公开实施例的通信方法包括：
步骤1001，第三控制面网元从第一控制面网元接收指示S-NSSAI的数据速率达到阈值的第二指示消息。
这里，所述第二指示消息包括以下信息至少之一：S-NSSAI标识、授权的UE-Slice-AMBR。所述第二指示消息包括AM Policy Association Modification message。
步骤1002，第三控制面网元响应于所述指示消息，改变UE-Slice-AMBR。
具体地，第三控制面网元发起PDU会话修改进程，以改变UE-Slice-AMBR。
以下详细说明由AMF启动的AM策略关联修改进程，以使用实际使用数据速率作为输入来降低UE-Slice-AMBR。该进程适用于满足策略控制请求触发条件的情况，该过程由AMF启动。
图11是根据一示例性实施例示出的AM策略关联修改的通信示意图，如图11所示，在非漫游情况下，V-PCF的角色由PCF承担。对于漫游方案，V-PCF与AMF进行交互。本示例的通信方法包括以下步骤：
步骤1，满足策略控制请求触发条件时，AMF将通过调用Npcf_AMPolicyControl_Update更新AM策略关联，并提供有关已更改为PCF的条件的信息。例如UE-Slice-AMBR更改，S-NSSAI的数据速率达到阈值。
步骤2，(V-)PCF存储在步骤1中接收的信息，并做出策略决策。在非漫游情况下，PCF可以从NWDAF订阅Analytics。
如果用于S-NSSAI的数据速率达到阈值，则PCF可以将实际使用的数据速率用作输入并做出策略决策。PCF发送AM策略关联修改响应于降低UE-Slice-AMBR，调整切片数据速率，响应包括S-NSSAI标识符和UE-Slice-AMBR。输入信息可以采用以下任何一种形式：实际使用数据速率，实际使用数据速率与累积数据速率之比和网络切片中每个SDF的MBR，用户类别和基于应用的偏好。
步骤3，(V)PCF向AMF响应更新的与访问和移动性相关的策略控制信息和更新的策略控制请求触发器参数。
步骤4，AMF部署包括存储AM策略关联的服务区域限制和策略控制请求触发器的访问和移动性控制策略，向UE提供服务区域限制以及提供RFSP索引，UE-AMBR，UE-Slice-NG-RAN的MBR和服务区域限制。
以下过程适用于PCF发起的AM Policy Association修改。由PCF内部事件驱动的过程适用于漫游和非漫游方案，而当由NWDAF驱动时，仅适用于非漫游方案。在非漫游情况下，V-PCF的角色由PCF承担。对于漫游方案，V-PCF与AMF进行交互。V-PCF/PCF存储提供给AMF的访问和移动性控制策略信息。
图12是根据一示例性实施例示出的PCF发起的AM策略关联修改的通信示意图，如图12所示，AM策略协会修改进程可以由内部PCF事件启动，也可以由PCF从NWDAF获取相关分析信息启动。具体包括以下步骤：
步骤1，PCF在内部确定UE上下文的新状态需要新策略，这可能由UDR的通知触发。也可以通过从NWDAF获取相关的分析信息来触发。
步骤2，(V-)PCF在漫游情况下，而PCF在非漫游情况下做出策略决定。PCF也可以决定从NWDAF订阅新的Analytics ID。
如果用于S-NSSAI的数据速率达到阈值，则PCF可以将利用的数据速率用作输入并做出策略决策。PCF发送Npcf_AMPolicyControl_UpdateNotify以降低UE-Slice-AMBR，调整分片数据速率，发送的消息中包括S-NSSAI标识符和UE-Slice-AMBR。输入信息可以采用以下任何一种形式：实际使用数据速率，将实际使用的数据速率与累积的数据速率和SDF的MBR的比，用户类别和基于应用的偏好。
步骤3，漫游情况下的(V-)PCF和非漫游情况下的PCF发送Npcf_AMPolicyControl_UpdateNotify，Npcf_AMPolicyControl_UpdateNotify中包括与SUPI相关的AM策略关联ID。策略更新可以包括服务区域限制，UE-AMBR，UE-Slice-MBR或RFSP索引值。如果AF先前已在步骤1中预订了分配服务区域覆盖范围结果的事件请求，则(V-)PCF检查所分配的服务区域覆盖范围是否已更改，并使用Npcf_AMPolicyAuthorization_Notify发送相应的通知给AF，参见协议TS 23.503[20]中的第6.3.1.18节中的相关定义。
步骤4，AMF部署并存储更新后的与访问和移动性相关的策略信息，包括存储AM策略关联的服务区域限制和策略控制请求触发器，向UE 提供服务区域限制以及提供RFSP索引，UE-Slice-MBR和NG-RAN的服务区域限制。
图13是根据一示例性实施例示出的通信装置的组成结构示意图，如图13所示，本公开实施例的通信装置包括：
发送单元131，配置为响应于策略决策的触发，执行第一控制面网元发起的SM策略关联修改进程，以向第二控制面网元通知策略的修改；
处理单元132，配置为若切片的数据速率达到阈值，则将实际使用的数据速率用作策略决策的输入，对会话聚合最大比特速率Session-AMBR进行降低。
作为一种实现方式，处理单元132还配置为：
将实际使用的数据速率与累积的数据速率和业务数据流SDF最大比特速率MBR的比率，用作所述第一控制面网元的策略决策的输入；或
将用户类别用作所述第一控制面网元的策略决策的输入；或
将基于应用的偏好用作所述第一控制面网元的策略决策的输入；或
将用户类别和基于应用的偏好和用作所述第一控制面网元的策略决策的输入；或
将由网络数据分析功能NWDAF网元提供的分析信息用作所述第一控制面网元的策略决策的输入。
作为一种实现方式，发送单元131，还配置为：
向所述第二控制面网元发送第一指示消息，所述第一指示消息用于指示降低Session-AMBR的SM策略关联修改。
在示例性实施例中，发送单元131、处理单元132等可以被一个或多个中央处理器(CPU，Central Processing Unit)、图形处理器(GPU，Graphics Processing Unit)、基带处理器(BP，Base Processor)、应用专用集成电路(ASIC，Application Specific Integrated Circuit)、数字信号处理器(Digital  Signal Processor，DSP)、可编程逻辑器件(PLD，Programmable Logic Device)、复杂可编程逻辑器件(CPLD，Complex Programmable Logic Device)、现场可编程门阵列(FPGA，Field-Programmable Gate Array)、通用处理器、控制器、微控制器(MCU，Micro Controller Unit)、微处理器(Microprocessor)、或其他电子元件实现，也可以结合一个或多个射频(RF，radio frequency)天线实现，用于执行前述实施例的信息动态指示方法的步骤。
在本公开实施例中，图示出的通信装置中各个单元执行操作的具体方式已经在有关该方法的实施例中进行了详细描述，此处将不做详细阐述说明。
图14是根据一示例性实施例示出的通信装置的组成结构示意图，如图14所示，本公开实施例的通信装置包括：
发送单元141，配置为响应于策略决策的触发，执行第一控制面网元发起的SM策略关联修改进程，以向第二控制面网元通知策略的修改；
处理单元142，配置为若S-NSSAI的数据速率达到阈值，则所述第一控制面网元更新PCC规则，将实际使用的数据速率用作所述第一控制面网元的策略决策的输入。
作为一种实现方式，处理单元142，还配置为：
将切片的实际使用的数据速率与累积的数据速率和业务数据流SDF的最大比特速率MBR的比，用作所述第一控制面网元的策略决策的输入；或
将用户类别用作所述第一控制面网元的策略决策的输入；或
将基于应用的偏好用作所述第一控制面网元的策略决策的输入；或
将用户类别和基于应用的偏好和用作所述第一控制面网元的策略决策的输入；或
将由网络数据分析功能NWDAF网元提供的分析信息用作所述第一控制面网元的策略决策的输入。
发送单元141，还配置为：
向所述第二控制面网元发送第一指示消息，所述第一指示消息用于指示降低相关QoS流的MBR。
在示例性实施例中，发送单元141、处理单元142等可以被一个或多个中央处理器(CPU，Central Processing Unit)、图形处理器(GPU，Graphics Processing Unit)、基带处理器(BP，Base Processor)、应用专用集成电路(ASIC，Application Specific Integrated Circuit)、数字信号处理器(Digital Signal Processor，DSP)、可编程逻辑器件(PLD，Programmable Logic Device)、复杂可编程逻辑器件(CPLD，Complex Programmable Logic Device)、现场可编程门阵列(FPGA，Field-Programmable Gate Array)、通用处理器、控制器、微控制器(MCU，Micro Controller Unit)、微处理器(Microprocessor)、或其他电子元件实现，也可以结合一个或多个射频(RF，radio frequency)天线实现，用于执行前述实施例的信息动态指示方法的步骤。
在本公开实施例中，图示出的通信装置中各个单元执行操作的具体方式已经在有关该方法的实施例中进行了详细描述，此处将不做详细阐述说明。
图15是根据一示例性实施例示出的通信装置的组成结构示意图，如图15所示，本公开实施例的通信装置包括：
接收单元151，配置为从第一控制面网元接收指示S-NSSAI的数据速率达到阈值的第一指示消息；
处理单元152，配置为响应于所述第一指示消息，改变Session-AMBR。
其中，所述第一指示消息包括以下信息至少之一：S-NSSAI标识、授权的Session-AMBR。
在图15所示的通信装置的基础上，本公开实施例的通信装置还包括：
发起单元(图中未示出)，配置为发起PDU会话修改进程，以改变Session-AMBR。
或者，所述第一指示消息包括以下信息至少之一：S-NSSAI标识、SDF相应MBR和GBR。对应地，处理单元152，还配置为：根据PCC规则强制执行业务数据流的授权QoS。
在示例性实施例中，接收单元151、处理单元152、发起单元等可以被一个或多个中央处理器(CPU，Central Processing Unit)、图形处理器(GPU，Graphics Processing Unit)、基带处理器(BP，Base Processor)、应用专用集成电路(ASIC，Application Specific Integrated Circuit)、数字信号处理器(Digital Signal Processor，DSP)、可编程逻辑器件(PLD，Programmable Logic Device)、复杂可编程逻辑器件(CPLD，Complex Programmable Logic Device)、现场可编程门阵列(FPGA，Field-Programmable Gate Array)、通用处理器、控制器、微控制器(MCU，Micro Controller Unit)、微处理器(Microprocessor)、或其他电子元件实现，也可以结合一个或多个射频(RF，radio frequency)天线实现，用于执行前述实施例的信息动态指示方法的步骤。
在本公开实施例中，图示出的通信装置中各个单元执行操作的具体方式已经在有关该方法的实施例中进行了详细描述，此处将不做详细阐述说明。
本公开实施例还记载了一种通信装置，所述装置包括：
接收单元，配置为从第一控制面网元接收指示S-NSSAI的数据速率达到阈值的第一指示消息；
处理单元，配置为响应于所述第一指示消息，改变SDF相应MBR和GBR。
所述第一指示消息包括以下信息至少之一：S-NSSAI标识、SDF相应MBR和GBR。所述处理单元，还配置为：根据PCC规则执行业务数据流的授权QoS。
图16是根据一示例性实施例示出的通信装置的组成结构示意图，如图16所示，本公开实施例的通信装置包括：
发送单元161，配置为响应于策略决策的触发，执行第一控制面网元发起的接入与移动性AM策略关联修改进程，以向第三控制面网元通知策略的修改；
处理单元162，配置为若S-NSSAI的数据速率达到阈值，则所述第一控制面网元对用户切片聚合最大比特速率UE-Slice-AMBR进行降低，将实际使用的数据速率用作所述第一控制面网元的策略决策的输入。
作为一种实现方式，所述处理单元162，还配置为：
将实际使用的数据速率与累积的数据速率和SDF的MBR的比，用作所述第一控制面网元的策略决策的输入；或
将用户类别用作所述第一控制面网元的策略决策的输入；或
将基于应用的偏好用作所述第一控制面网元的策略决策的输入；或
将用户类别和基于应用的偏好和用作所述第一控制面网元的策略决策的输入；或
将由NWDAF网元提供的分析信息用作所述第一控制面网元的策略决策的输入。
发送单元161还配置为：向所述第三控制面网元发送第二指示消息，所述第二指示消息用于指示降低UE-Slice-AMBR的AM策略关联修改。
在示例性实施例中，发送单元161、处理单元162等可以被一个或多个 中央处理器(CPU，Central Processing Unit)、图形处理器(GPU，Graphics Processing Unit)、基带处理器(BP，Base Processor)、应用专用集成电路(ASIC，Application Specific Integrated Circuit)、数字信号处理器(Digital Signal Processor，DSP)、可编程逻辑器件(PLD，Programmable Logic Device)、复杂可编程逻辑器件(CPLD，Complex Programmable Logic Device)、现场可编程门阵列(FPGA，Field-Programmable Gate Array)、通用处理器、控制器、微控制器(MCU，Micro Controller Unit)、微处理器(Microprocessor)、或其他电子元件实现，也可以结合一个或多个射频(RF，radio frequency)天线实现，用于执行前述实施例的信息动态指示方法的步骤。
在本公开实施例中，图示出的通信装置中各个单元执行操作的具体方式已经在有关该方法的实施例中进行了详细描述，此处将不做详细阐述说明。
图17是根据一示例性实施例示出的通信装置的组成结构示意图，如图17所示，本公开实施例的通信装置包括：
接收单元171，配置为从第一控制面网元接收指示S-NSSAI的数据速率达到阈值的第二指示消息；
处理单元172，配置为响应于所述第二指示消息，改变UE-Slice-AMBR。
其中，所述第二指示消息包括以下信息至少之一：S-NSSAI标识、授权的UE-Slice-AMBR。
在图17所示的通信装置的基础上，本公开实施例的通信装置还包括：
发起单元(图中未示出)，配置为发起PDU会话修改进程，以改变UE-Slice-AMBR。
在示例性实施例中，接收单元171、处理单元172、发起单元等可以被 一个或多个中央处理器(CPU，Central Processing Unit)、图形处理器(GPU，Graphics Processing Unit)、基带处理器(BP，Base Processor)、应用专用集成电路(ASIC，Application Specific Integrated Circuit)、数字信号处理器(Digital Signal Processor，DSP)、可编程逻辑器件(PLD，Programmable Logic Device)、复杂可编程逻辑器件(CPLD，Complex Programmable Logic Device)、现场可编程门阵列(FPGA，Field-Programmable Gate Array)、通用处理器、控制器、微控制器(MCU，Micro Controller Unit)、微处理器(Microprocessor)、或其他电子元件实现，也可以结合一个或多个射频(RF，radio frequency)天线实现，用于执行前述实施例的信息动态指示方法的步骤。
在本公开实施例中，图示出的通信装置中各个单元执行操作的具体方式已经在有关该方法的实施例中进行了详细描述，此处将不做详细阐述说明。
本公开实施例还记载了一种第一网络设备如PCF，包括处理器、收发器、存储器及存储在存储器上并能够由所述处理器运行的可执行程序，所述处理器运行所述可执行程序时执行前述实施例通信方法的步骤。
本公开实施例还记载了一种第二网络设备如SMF，包括处理器、收发器、存储器及存储在存储器上并能够由所述处理器运行的可执行程序，所述处理器运行所述可执行程序时执行所述的通信方法的步骤。
本公开实施例还记载了一种第三网络设备如AMF，包括处理器、收发器、存储器及存储在存储器上并能够由所述处理器运行的可执行程序，所述处理器运行所述可执行程序时执行所述的通信方法的步骤。
本公开实施例还记载了一种通信系统，所述系统至少包括：第一控制面网元和第二控制面网元；其中，所述第一控制面网元被配置为发起SM策略关联修改过程，以在S-NSSAI的数据速率达到阈值时，用授权 Session-AMBR通知所述第二控制面网元策略的修改；所述第二控制面网元被配置为确认所述第一控制面网元请求，并启动PDU会话修改进程以改变Session-AMBR。
本公开实施例还记载了另一种通信系统，所述系统至少包括：第一控制面网元和第二控制面网元；其中，所述第一控制面网元被配置为PCF被配置成发起SM策略关联修改过程，以在S-NSSAI的数据速率达到阈值时，用SDF对应的MBR和GBR通知所述第二控制面网元策略的修改；所述第二控制面网元被配置为确认所述第一控制面网元请求，并根据PCC规则强制执行业务数据流的授权QoS。
作为一种实现方式，本公开实施例的第一控制面网元包括PCF，第二控制面网元SMF。
图18是根据一示例性实施例示出的一种用户设备8000的框图。例如，用户设备8000可以是移动电话，计算机，数字广播终端，消息收发设备，游戏控制台，平板设备，医疗设备，健身设备，个人数字助理等。
参照图18，用户设备8000可以包括以下一个或多个组件：处理组件8002，存储器8004，电源组件8006，多媒体组件8008，音频组件8010，输入/输出(I/O)的接口8012，传感器组件8014，以及通信组件8016。
处理组件8002通常控制用户设备8000的整体操作，诸如与显示，电话呼叫，数据通信，相机操作和记录操作相关联的操作。处理组件8002可以包括一个或多个处理器8020来执行指令，以完成上述的方法的全部或部分步骤。此外，处理组件8002可以包括一个或多个模块，便于处理组件8002和其他组件之间的交互。例如，处理组件8002可以包括多媒体模块，以方便多媒体组件8008和处理组件8002之间的交互。
存储器8004被配置为存储各种类型的数据以支持在设备8000的操作。这些数据的示例包括用于在用户设备8000上操作的任何应用程序或方法的 指令，联系人数据，电话簿数据，消息，图片，视频等。存储器8004可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随机存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。
电源组件8006为用户设备8000的各种组件提供电力。电源组件8006可以包括电源管理系统，一个或多个电源，及其他与为用户设备8000生成、管理和分配电力相关联的组件。
多媒体组件8008包括在用户设备8000和用户之间的提供一个输出接口的屏幕。在一些实施例中，屏幕可以包括液晶显示器(LCD)和触摸面板(TP)。如果屏幕包括触摸面板，屏幕可以被实现为触摸屏，以接收来自用户的输入信号。触摸面板包括一个或多个触摸传感器以感测触摸、滑动和触摸面板上的手势。触摸传感器可以不仅感测触摸或滑动动作的边界，而且还检测与触摸或滑动操作相关的持续时间和压力。在一些实施例中，多媒体组件8008包括一个前置摄像头和/或后置摄像头。当设备8000处于操作模式，如拍摄模式或视频模式时，前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变焦能力。
音频组件8010被配置为输出和/或输入音频信号。例如，音频组件8010包括一个麦克风(MIC)，当用户设备8000处于操作模式，如呼叫模式、记录模式和语音识别模式时，麦克风被配置为接收外部音频信号。所接收的音频信号可以被进一步存储在存储器8004或经由通信组件8016发送。在一些实施例中，音频组件8010还包括一个扬声器，用于输出音频信号。
I/O接口8012为处理组件8002和外围接口模块之间提供接口，上述外围接口模块可以是键盘，点击轮，按钮等。这些按钮可包括但不限于：主 页按钮、音量按钮、启动按钮和锁定按钮。
传感器组件8014包括一个或多个传感器，用于为用户设备8000提供各个方面的状态评估。例如，传感器组件8014可以检测到设备8000的打开/关闭状态，组件的相对定位，例如组件为用户设备8000的显示器和小键盘，传感器组件8014还可以检测用户设备8000或用户设备8000一个组件的位置改变，用户与用户设备8000接触的存在或不存在，用户设备8000方位或加速/减速和用户设备8000的温度变化。传感器组件8014可以包括接近传感器，被配置用来在没有任何的物理接触时检测附近物体的存在。传感器组件8014还可以包括光传感器，如CMOS或CCD图像传感器，用于在成像应用中使用。在一些实施例中，该传感器组件8014还可以包括加速度传感器，陀螺仪传感器，磁传感器，压力传感器或温度传感器。
通信组件8016被配置为便于用户设备8000和其他设备之间有线或无线方式的通信。用户设备8000可以接入基于通信标准的无线网络，如Wi-Fi，2G或3G，或它们的组合。在一个示例性实施例中，通信组件8016经由广播信道接收来自外部广播管理系统的广播信号或广播相关信息。在一个示例性实施例中，通信组件8016还包括近场通信(NFC)模块，以促进短程通信。例如，在NFC模块可基于射频识别(RFID)技术，红外数据协会(IrDA)技术，超宽带(UWB)技术，蓝牙(BT)技术和其他技术来实现。
在示例性实施例中，用户设备8000可以被一个或多个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、控制器、微控制器、微处理器或其他电子元件实现，用于执行上述信息动态指示方法的步骤。
在示例性实施例中，还提供了一种包括指令的非临时性计算机可读存储介质，例如包括指令的存储器8004，上述指令可由用户设备8000的处理器8020执行以完成上述信息动态指示方法的步骤。例如，非临时性计算机 可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。
本公开实施例还记载了一种存储介质，其上存储由可执行程序，所述可执行程序被处理器执行前述实施例的通信方法的步骤。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本发明实施例的其它实施方案。本申请旨在涵盖本发明实施例的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本发明实施例的一般性原理并包括本公开实施例未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本发明实施例的真正范围和精神由下面的权利要求指出。
应当理解的是，本发明实施例并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本发明实施例的范围仅由所附的权利要求来限制。

Claims (51)

  1. 一种通信方法，所述方法包括：
    响应于策略决策的触发，第一控制面网元执行自身发起的会话管理SM策略关联修改进程，以向第二控制面网元通知策略的修改；
    若切片的数据速率达到阈值，则所述第一控制面网元将实际使用的数据速率用作策略决策的输入，降低会话聚合最大比特速率Session-AMBR。
  2. 根据权利要求1所述的方法，其中，所述方法还包括：
    所述第一控制面网元将实际使用的数据速率与累积的数据速率和业务数据流SDF最大比特速率MBR的比率，用作所述第一控制面网元的策略决策的输入。
  3. 根据权利要求1所述的方法，其中，所述方法还包括：
    所述第一控制面网元将用户类别用作所述第一控制面网元的策略决策的输入。
  4. 根据权利要求1所述的方法，其中，所述方法还包括：
    所述第一控制面网元将基于应用的偏好用作所述第一控制面网元的策略决策的输入。
  5. 根据权利要求2所述的方法，其中，所述方法还包括：
    所述第一控制面网元将用户类别和基于应用的偏好和用作所述第一控制面网元的策略决策的输入。
  6. 根据权利要求1至5任一项所述的方法，其中，所述第一控制面网元对Session-AMBR进行降低，包括：
    所述第一控制面网元向所述第二控制面网元发送第一指示消息，所述第一指示消息用于指示降低Session-AMBR的SM策略关联修改。
  7. 根据权利要求6所述的方法，其中，所述第一指示消息包括以下 信息至少之一：S-NSSAI标识、授权的Session-AMBR。
  8. 根据权利要求1至7任一项所述的方法，其中，所述方法还包括：
    所述第一控制面网元将由网络数据分析功能NWDAF网元提供的分析信息用作所述第一控制面网元的策略决策的输入。
  9. 一种通信方法，所述方法包括：
    响应于策略决策的触发，第一控制面网元执行自身发起的SM策略关联修改进程，以向第二控制面网元通知策略的修改；
    若S-NSSAI的数据速率达到阈值，则所述第一控制面网元更新策略与计费控制PCC规则，将实际使用的数据速率用作所述第一控制面网元的策略决策的输入。
  10. 根据权利要求9所述的方法，其中，所述方法还包括：
    所述第一控制面网元将切片的实际使用的数据速率与累积的数据速率和业务数据流SDF的最大比特速率MBR的比，用作所述第一控制面网元的策略决策的输入。
  11. 根据权利要求9所述的方法，其中，所述方法还包括：
    所述第一控制面网元将用户类别用作所述第一控制面网元的策略决策的输入。
  12. 根据权利要求9所述的方法，其中，所述方法还包括：
    所述第一控制面网元将基于应用的偏好用作所述第一控制面网元的策略决策的输入。
  13. 根据权利要求10所述的方法，其中，所述方法还包括：
    所述第一控制面网元将用户类别和基于应用的偏好和用作所述第一控制面网元的策略决策的输入。
  14. 根据权利要求9至13任一项所述的方法，其中，所述向第二控制面网元通知策略的修改，包括：
    所述第一控制面网元向所述第二控制面网元发送第一指示消息，所述第一指示消息用于指示降低相关QoS流的MBR。
  15. 根据权利要求14所述的方法，其中，所述第一指示消息包括以下信息至少之一：S-NSSAI标识、SDF对应的MBR和保证比特速率GBR。
  16. 根据权利要求9至15任一项所述的方法，其中，所述方法还包括：
    所述第一控制面网元将由NWDAF网元提供的分析信息用作所述第一控制面网元的策略决策的输入。
  17. 一种通信方法，所述方法包括：
    第二控制面网元从第一控制面网元接收指示S-NSSAI的数据速率达到阈值的第一指示消息；
    响应于所述第一指示消息， 改变Session-AMBR。
  18. 根据权利要求17所述的方法，其中，所述第一指示消息包括以下信息至少之一：S-NSSAI标识、授权的Session-AMBR。
  19. 根据权利要求18所述的方法，其中，所述方法还包括：
    所述第二控制面网元发起分组数据单元PDU会话修改进程，以改变Session-AMBR。
  20. 一种通信方法，所述方法包括：
    第二控制面网元从第一控制面网元接收指示S-NSSAI的数据速率达到阈值的第一指示消息；
    响应于所述第一指示消息，改变SDF相应MBR和GBR 。
  21. 根据权利要求20所述的方法，其中，所述第一指示消息包括以下信息至少之一：S-NSSAI标识、SDF相应MBR和GBR。
  22. 根据权利要求21所述的方法，其中，所述方法还包括：
    所述第二控制面网元根据PCC规则执行业务数据流的授权QoS。
  23. 一种通信方法，所述方法包括：
    响应于策略决策的触发，第一控制面网元执行自身发起的接入与移动性AM策略关联修改进程，以向第三控制面网元通知策略的修改；
    若S-NSSAI的数据速率达到阈值，则所述第一控制面网元对用户切片聚合最大比特速率UE-Slice-AMBR进行降低，将实际使用的数据速率用作所述第一控制面网元的策略决策的输入。
  24. 根据权利要求23所述的方法，其中，所述方法还包括：
    所述第一控制面网元将实际使用的数据速率与累积的数据速率和SDF的MBR之比，用作所述第一控制面网元的策略决策的输入。
  25. 根据权利要求23所述的方法，其中，所述方法还包括：
    所述第一控制面网元将用户类别用作所述第一控制面网元的策略决策的输入。
  26. 根据权利要求23所述的方法，其中，所述方法还包括：
    所述第一控制面网元将基于应用的偏好用作所述第一控制面网元的策略决策的输入。
  27. 根据权利要求24所述的方法，其中，所述方法还包括：
    所述第一控制面网元将用户类别和基于应用的偏好和用作所述第一控制面网元的策略决策的输入。
  28. 根据权利要求23至27任一项所述的方法，其中，所述第一控制面网元对UE-Slice-AMBR进行降低，包括：
    所述第一控制面网元向所述第三控制面网元发送第二指示消息，所述第二指示消息用于指示降低UE-Slice-AMBR的AM策略关联修改。
  29. 根据权利要求28所述的方法，其中，所述第二指示消息包括以下信息至少之一：S-NSSAI标识、授权的UE-Slice-AMBR。
  30. 根据权利要求23至29任一项所述的方法，其中，所述方法还 包括：
    所述第一控制面网元将由NWDAF网元提供的分析信息用作所述第一控制面网元的策略决策的输入。
  31. 一种通信方法，所述方法包括：
    第三控制面网元从第一控制面网元接收指示切片数据速率达到阈值的第二指示消息；
    响应于所述第二指示消息，改变UE-Slice-AMBR。
  32. 根据权利要求31所述的方法，其中，所述第二指示消息包括以下信息至少之一：S-NSSAI标识、授权的UE-Slice-AMBR。
  33. 根据权利要求32所述的方法，其中，所述方法还包括：
    所述第三控制面网元发起PDU会话修改进程，以改变UE-Slice-AMBR。
  34. 一种通信装置，所述装置包括：
    发送单元，配置为响应于策略决策的触发，执行第一控制面网元发起的SM策略关联修改进程，以向第二控制面网元通知策略的修改；
    处理单元，配置为若切片的数据速率达到阈值，则将实际使用的数据速率用作策略决策的输入，对会话聚合最大比特速率Session-AMBR进行降低。
  35. 根据权利要求34所述的装置，其中，所述处理单元，还配置为：
    将实际使用的数据速率与累积的数据速率和业务数据流SDF最大比特速率MBR的比率，用作所述第一控制面网元的策略决策的输入；或
    将用户类别用作所述第一控制面网元的策略决策的输入；或
    将基于应用的偏好用作所述第一控制面网元的策略决策的输入；或
    将用户类别和基于应用的偏好和用作所述第一控制面网元的策略决策的输入；或
    将由网络数据分析功能NWDAF网元提供的分析信息用作所述第一控制面网元的策略决策的输入。
  36. 一种通信装置，所述装置包括：
    发送单元，配置为响应于策略决策的触发，执行第一控制面网元发起的SM策略关联修改进程，以向第二控制面网元通知策略的修改；
    处理单元，配置为若S-NSSAI的数据速率达到阈值，则所述第一控制面网元更新PCC规则，将实际使用的数据速率用作所述第一控制面网元的策略决策的输入。
  37. 根据权利要求36所述的装置，其中，所述处理单元，还配置为：
    将切片的实际使用的数据速率与累积的数据速率和业务数据流SDF的最大比特速率MBR的比，用作所述第一控制面网元的策略决策的输入；或
    将用户类别用作所述第一控制面网元的策略决策的输入；或
    将基于应用的偏好用作所述第一控制面网元的策略决策的输入；或
    将用户类别和基于应用的偏好和用作所述第一控制面网元的策略决策的输入；或
    将由网络数据分析功能NWDAF网元提供的分析信息用作所述第一控制面网元的策略决策的输入。
  38. 一种通信装置，所述装置包括：
    接收单元，配置为从第一控制面网元接收指示S-NSSAI的数据速率达到阈值的第一指示消息；
    处理单元，配置为响应于所述第一指示消息，改变Session-AMBR。
  39. 根据权利要求38所述的装置，其中，所述第一指示消息包括以下信息至少之一：S-NSSAI标识、授权的Session-AMBR；
    对应地，所述装置还包括：
    发起单元，配置为发起PDU会话修改进程，以改变Session-AMBR。
  40. 一种通信装置，所述装置包括：
    接收单元，配置为从第一控制面网元接收指示S-NSSAI的数据速率达到阈值的第一指示消息；
    处理单元，配置为响应于所述第一指示消息，改变SDF相应MBR和GBR。
  41. 根据权利要求40所述的方法，其中，所述第一指示消息包括以下信息至少之一：S-NSSAI标识、SDF相应MBR和GBR；
    对应地，所述处理单元，还配置为：根据PCC规则执行业务数据流的授权QoS。
  42. 一种通信装置，所述装置包括：
    发送单元，配置为响应于策略决策的触发，执行第一控制面网元发起的接入与移动性AM策略关联修改进程，以向第三控制面网元通知策略的修改；
    处理单元，配置若S-NSSAI的数据速率达到阈值，则所述第一控制面网元对用户切片聚合最大比特速率UE-Slice-AMBR进行降低，将实际使用的数据速率用作所述第一控制面网元的策略决策的输入。
  43. 根据权利要求42所述的装置，其中，所述处理单元，还配置为：
    将实际使用的数据速率与累积的数据速率和SDF的MBR的比，用作所述第一控制面网元的策略决策的输入；或
    将用户类别用作所述第一控制面网元的策略决策的输入；或
    将基于应用的偏好用作所述第一控制面网元的策略决策的输入；或
    将用户类别和基于应用的偏好和用作所述第一控制面网元的策略决策的输入；或
    将由NWDAF网元提供的分析信息用作所述第一控制面网元的策略 决策的输入。
  44. 一种通信装置，所述装置包括：
    接收单元，配置为从第一控制面网元接收指示S-NSSAI的数据速率达到阈值的第二指示消息；
    处理单元，配置为响应于所述第二指示消息，改变UE-Slice-AMBR。
  45. 根据权利要求44所述的装置，其中，所述第二指示消息包括以下信息至少之一：S-NSSAI标识、授权的UE-Slice-AMBR。
    对应地，所述装置还包括：
    发起单元，配置为发起PDU会话修改进程，以改变UE-Slice-AMBR。
  46. 一种第一网络设备，包括处理器、收发器、存储器及存储在存储器上并能够由所述处理器运行的可执行程序，所述处理器运行所述可执行程序时执行如权利要求1至16或23至30任一项所述的通信方法的步骤。
  47. 一种第二网络设备，包括处理器、收发器、存储器及存储在存储器上并能够由所述处理器运行的可执行程序，所述处理器运行所述可执行程序时执行如权利要求17至22任一项所述的通信方法的步骤。
  48. 一种第三网络设备，包括处理器、收发器、存储器及存储在存储器上并能够由所述处理器运行的可执行程序，所述处理器运行所述可执行程序时执行如权利要求31至36任一项所述的通信方法的步骤。
  49. 一种通信系统，所述系统至少包括：第一控制面网元和第二控制面网元；其中，所述第一控制面网元被配置为PCF被配置成发起SM策略关联修改过程，以在S-NSSAI的数据速率达到阈值时，用授权Session-AMBR通知所述第二控制面网元策略的修改；所述第二控制面网元被配置为确认所述第一控制面网元请求，并启动PDU会话修改进程以改变Session-AMBR。
  50. 一种通信系统，所述系统至少包括：第一控制面网元和第二控 制面网元；其中，所述第一控制面网元被配置为PCF被配置成发起SM策略关联修改过程，以在S-NSSAI的数据速率达到阈值时，用SDF相应MBR和GBR通知所述第二控制面网元策略的修改；所述第二控制面网元被配置为确认所述第一控制面网元请求，并根据PCC规则强制执行业务数据流的授权QoS。
  51. 一种存储介质，其上存储由可执行程序，所述可执行程序被处理器执行时实现如求1至33任一项所述的通信方法的步骤。
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ERICSSON: "KI#3 – Slice Maximum Bit Rate (Slice-MBR)", 3GPP DRAFT; S2-2102135, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. SA WG2, no. e-meeting; 20210412 - 20210416, 6 April 2021 (2021-04-06), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051993526 *
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2026112295A1 (en) * 2024-11-22 2026-05-28 Mavenir Systems, Inc. Optimizing enforcement of ue aggregate maximum bit rate (ambr) in network slicing environment in o-ran networks

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US20240244513A1 (en) 2024-07-18
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