WO2019184723A1 - 策略和计费控制规则获取方法、装置及*** - Google Patents

策略和计费控制规则获取方法、装置及*** Download PDF

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Publication number
WO2019184723A1
WO2019184723A1 PCT/CN2019/078236 CN2019078236W WO2019184723A1 WO 2019184723 A1 WO2019184723 A1 WO 2019184723A1 CN 2019078236 W CN2019078236 W CN 2019078236W WO 2019184723 A1 WO2019184723 A1 WO 2019184723A1
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Prior art keywords
network element
session management
management network
session
pcc rule
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PCT/CN2019/078236
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English (en)
French (fr)
Inventor
宗在峰
朱奋勤
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华为技术有限公司
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Publication of WO2019184723A1 publication Critical patent/WO2019184723A1/zh

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    • 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 for data wireline or wireless communications
    • 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
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications
    • 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
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
    • H04L47/2425—Traffic characterised by specific attributes, e.g. priority or QoS for supporting services specification, e.g. SLA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/14—Session management
    • 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

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a policy and charging control (PCC) rule acquiring method, apparatus, and system.
  • PCC policy and charging control
  • a packet data unit (PDU) session is managed by a session management function (SMF) network element.
  • SMF session management function
  • the above 5G network architecture is inconsistent with the actual deployment of the operator.
  • the SMF network element is usually divided by region. of. That is to say, in the actual deployment of the operator, an SMF network element can only serve a specific area. At this time, if the SMF network element still obtains the PCC rules related to all applications in the entire PLMN according to the existing PCC rule acquisition manner, a large amount of waste of transmission resources between the PCF network element and the SMF network element is caused.
  • the embodiment of the present application provides a method, an apparatus, and a system for acquiring a PCC rule.
  • the SMF network element obtains an application-related PCC rule corresponding to the SMF network element, where the SMF network element is divided according to the administrative area.
  • a method for obtaining a policy and a charging control PCC rule includes: a first session management network element sends service area information of a first session management network element, and service area information of the first session management network element The first PCC rule is used to determine a first PCC rule, where the first PCC rule includes an application-related PCC rule corresponding to the first session management network element; and the first session management network element receives the first PCC rule.
  • the session management network element needs to acquire PCC rules related to all applications in the entire PLMN when acquiring the PCC rules.
  • the session management network element may obtain the PCC rule related to the application corresponding to the session management network element, so that the session management network element obtains the PCC rule related to the application corresponding to the session management network element.
  • the technology can greatly reduce the number of application-related PCC rules transmitted between the policy control function network element and the session management network element, thereby saving transmission resources between the policy control function network element and the session management network element.
  • the PCC rule obtaining method provided by the embodiment of the present application may further include: the first session management network element sends the type of the first session management network element, where the type of the first session management network element is used. Determining the first PCC rule, wherein the type of the first session management network element comprises an anchor session management network element or an intermediate session management network element. That is, when determining the application-related PCC rule corresponding to the first session management network element, the type of the first session management network element may also be included, for example, the type of the first session management network element includes an anchor session management network.
  • the first PCC rule may include a traffic steering policy for identifying how data is transmitted from the user plane function network element connected to the data network to the data network; in the first session management network element
  • the first PCC rule may include an uplink offload policy, which is used to characterize how the data is locally offloaded.
  • the first session management network element is an anchor session management network element or an intermediate session management network element; correspondingly, the first session management network element sends the service area information of the first session management network element, The first session management network element sends the service area information of the first session management network element to the policy control function network element.
  • the first session management network element receives the first PCC rule, including: the first session management network element receives the The policy controls the first PCC rule of the functional network element. That is to say, in the embodiment of the present application, the first session management network element can directly communicate with the policy control function network element.
  • the PCC rule obtaining method provided by the embodiment of the present application may further include: the first session management network element receives a session-related session policy resource identifier from the second session management network element, and the session policy resource identifier The session policy resource related to the session is located; the first session management network element sends the session policy resource identifier to the policy control function network element. Based on the solution, the policy control function network element can locate the session policy resource related to the session.
  • the PCC rule obtaining method provided by the embodiment of the present application may further include: the first session management network element sends the subscription permanent identifier of the terminal served by the first session management network element to the policy control function network element. a SUPI and a session identifier corresponding to the session of the terminal; wherein the SUPI and the session identifier are used to associate the session policy resource related to the session corresponding to the first session management network element with the session corresponding to the second session management network element The session policy resource is associated.
  • a session-related session policy resource may be separately created for the first session management network element and the second session management network element, and then, when the first session management network element sends the policy control function network element
  • the policy control function network The session may associate the session-related session policy resource corresponding to the first session management network element with the session-related session policy resource corresponding to the second session management network element, and further determine the session-related session policy resource.
  • the PCC rule obtaining method provided by the embodiment of the present application may further include: the first session management network element receives information of the policy control function network element from the second session management network element, and the policy control function The information of the network element is used by the first session management network element to select the policy control function network element. Based on the solution, the first session management network element and the second session management network element can be selected to the same policy control function network element for the session of the same terminal.
  • the PCC rule acquisition method may further include: A session management network element sends a query message to the binding support function network element, where the query message carries a session identifier corresponding to the session of the terminal served by the first session management network element, where the session identifier is used to select the policy control function network element.
  • the first session management network element receives the query response from the binding support function network element, and the query response carries the information of the policy control function network element. Based on the solution, the first session management network element and the second session management network element can be selected to the same policy control function network element for the session of the same terminal.
  • the first session management network element is an intermediate session management network element; correspondingly, the first session management network element sends the service area information of the first session management network element, including: the first session management network Transmitting, by the second session management network element, the service area information of the first session management network element and the first session management network element receiving the address information of the first PCC rule, where the second session management network element moves to the policy control function
  • the network element sends the service area information of the first session management network element, and the first session management network element receives the address information of the first PCC rule, where the second session management network element is an anchor session management network element; Receiving the first PCC rule by the session management network element, the first session management network element receiving the first PCC rule from the policy control function network element.
  • the first session management network element and the policy control function network element in the embodiment of the present application may communicate through the second session management network element, or may directly communicate; the second session management network element in this embodiment of the present application.
  • the network element of the policy control function can communicate directly, which is not specifically limited in this embodiment of the present application.
  • the first session management network element is an intermediate session management network element; correspondingly, the first session management network element sends the service area information of the first session management network element, including: the first session management network Transmitting the service area information of the first session management network element to the second session management network element, where the second session management network element is an anchor session management network element; the first session management network element receives the first PCC rule
  • the method includes: the first session management network element receives the first PCC rule from the second session management network element.
  • the first session management network element and the policy control function network element in the embodiment of the present application can communicate through the second session management network element; the second session management network element and the policy control function network in this embodiment of the present application
  • the element can communicate directly, and the embodiment of the present application does not specifically limit this.
  • the first session management network element is an intermediate session management network element.
  • the PCC rule acquisition method provided by the embodiment may further include: the first session management network element sends the first session management network element corresponding to the first session management network element.
  • the updated session information, the updated session information is used to determine at least one of a third PCC rule and a fourth PCC rule, wherein the third PCC rule includes a local session policy corresponding to the first session management network element,
  • the fourth PCC rule includes a local session policy corresponding to the second session management network element, where the second session management network element is an anchor session management network element.
  • the intermediate session management network element and the anchor session management network element may obtain the corresponding local session policy in the case that the session corresponding to the intermediate session management network element is updated.
  • the first session management network element is an anchor session management network element; correspondingly, the first session management network element sends the service area information of the first session management network element, including: the first session The management network element sends a first request message to the policy control function network element, where the first request message carries the service area information of the first session management network element, and the first session management network element receives the first PCC rule, including: The session management network element receives the first PCC rule from the network element of the policy control function. That is to say, the first session management network element and the policy control function network element in the embodiment of the present application can directly communicate.
  • the PCC rule obtaining method may further include: the first session management network element receives the service area information of the second session management network element from the second session management network element, and the second session management.
  • the network element receives the address information of the second PCC rule, where the service area information of the second session management network element is used to determine a second PCC rule, where the second PCC rule includes an application-related PCC rule corresponding to the second session management network element.
  • the second session management network element is an intermediate session management network element.
  • the first request message further carries the service area information of the second session management network element, and the second session management network element receives the second PCC.
  • the address information of the rule is provided by the embodiment of the present application.
  • the PCC rule obtaining method may obtain the corresponding application-related PCC rule, not only the intermediate session management network element serving the current area of the terminal, but also the session management network element according to the administrative area.
  • the anchor session management network element can also obtain the corresponding application-related PCC rules.
  • the first session management network element is an anchor session management network element; the first session management network element sends the service area information of the first session management network element, including: the first session management network element direction
  • the policy control function network element sends a second request message, where the second request message carries the service area information of the first session management network element, and the first session management network element receives the first PCC rule, including: the first session management network element Receiving a response message from the network element of the policy control function, the response message carrying the first PCC rule. That is to say, the first session management network element and the policy control function network element in the embodiment of the present application can directly communicate.
  • the method for acquiring the PCC rule may further include: the first session management network element receives the service area information of the second session management network element from the second session management network element, where the second session management The service area information of the network element is used to determine a second PCC rule, where the second PCC rule includes an application-related PCC rule corresponding to the second session management network element, where the second session management network element is an intermediate session management network element.
  • the second request message further carries the service area information of the second session management network element; the response message further carries the second PCC rule; correspondingly, the PCC rule obtaining method provided by the embodiment of the present application may further include The first session management network element sends the second PCC rule to the second session management network element.
  • the PCC rule obtaining method according to the embodiment of the present application may obtain the corresponding application-related PCC rule, not only the intermediate session management network element serving the current area of the terminal, but also the session management network element according to the administrative area.
  • the anchor session management network element can also obtain the corresponding application-related PCC rules.
  • the foregoing response message further includes indication information, where the indication information is used to indicate at least one of the first PCC rule or the second PCC rule.
  • the first session management network element may determine the second PCC rule from the first PCC rule and the second PCC rule according to the indication information.
  • the PCC rule obtaining method provided by the embodiment of the present application may further include: the first session management network element, according to the service area information of the second session management network element, from the first PCC rule and the second PCC The second PCC rule is determined in the rule.
  • a second aspect provides a method for obtaining a policy and a charging control PCC rule, the method comprising: a policy control function network element receiving service area information of a first session management network element; and a policy control function network element according to the first session management network And determining, by the service area information of the element, the first PCC rule, where the first PCC rule includes an application-related PCC rule corresponding to the first session management network element; and the policy control function network element sends the first PCC rule.
  • the session management network element may obtain the PCC rule related to the application corresponding to the session management network element, so that the session management network element obtains the PCC rule related to the application corresponding to the session management network element.
  • the technology can greatly reduce the number of application-related PCC rules transmitted between the policy control function network element and the session management network element, thereby saving transmission resources between the policy control function network element and the session management network element.
  • the service area information of the first session management network element includes a list of DNAIs served by the first session management network element; and the policy control function network element manages the service area information of the network element according to the first session.
  • Determining the first PCC rule comprises: the policy control function network element determining the first PCC rule according to the DNAI list served by the first session management network element. Based on the scheme, the policy control function network element can determine the first PCC rule.
  • the service area information of the first session management network element includes the identification information of the area served by the first session management network element, and the policy control function network element manages the service area of the network element according to the first session. And determining, by the policy control function, the network element, according to the identifier information of the area served by the first session management network element, the DNAI list served by the first session management network element; the policy control function network element The first PCC rule is determined according to the DNAI list served by the first session management network element. Based on the scheme, the policy control function network element can determine the first PCC rule.
  • the service area information of the first session management network element includes location information of the terminal served by the first session management network element; and the policy control function network element manages the service element of the network element according to the first session.
  • the area information, the first PCC rule is determined, and the policy control function network element determines, according to the location information of the terminal served by the first session management network element, the identifier information of the area served by the first session management network element; Determining, by the function network element, the DNAI list served by the first session management network element according to the identifier information of the area served by the first session management network element; the policy control function network element is based on the DNAI served by the first session management network element List to determine the first PCC rule. Based on the scheme, the policy control function network element can determine the first PCC rule.
  • the PCC rule obtaining method provided by the embodiment of the present application may further include: the policy control function network element receiving the type of the first session management network element, where the type of the first session management network element includes The anchor session management network element or the intermediate session management network element; correspondingly, the policy control function network element determines the first PCC rule according to the service area information of the first session management network element, including: the policy control function network element according to the The service area information of the first session management network element and the type of the first session management network element determine the first PCC rule.
  • the type of the first session management network element may also be included, for example, the type of the first session management network element includes an anchor session management network.
  • the first PCC rule may include a traffic steering policy for identifying how data is transmitted from the user plane function network element connected to the data network to the data network; in the first session management network element
  • the first PCC rule may include an uplink offload policy, which is used to characterize how the data is locally offloaded.
  • the PCC rule obtaining method provided by the embodiment of the present application may further include: the policy control function network element sends a session-related session policy resource identifier to the second session management network element, where the second session management network Transmitting the session policy resource identifier to the first session management network element; the policy control function network element receiving the session policy resource identifier from the first session management network element, where the session policy resource identifier is used to locate the session related Session policy resources. Based on the solution, the policy control function network element can locate the session policy resource related to the session.
  • the PCC rule obtaining method provided by the embodiment of the present application may further include: the policy control function network element receiving the subscription of the terminal served by the first session management network element from the first session management network element. Permanently identifying the SUPI and the session identifier corresponding to the session of the terminal; wherein the SUPI and the session identifier are used to associate the session-related session policy resource corresponding to the first session management network element with the second session management network element Session-related session policy resources are associated.
  • a session-related session policy resource may be separately created for the first session management network element and the second session management network element, and then, when the first session management network element sends the policy control function network element
  • the policy control function network The session may associate the session-related session policy resource corresponding to the first session management network element with the session-related session policy resource corresponding to the second session management network element, and further determine the session-related session policy resource.
  • the PCC rule obtaining method provided by the embodiment of the present application may further include: the policy control function network element receiving the session of the terminal served by the first session management network element of the first session management network element. Corresponding session identifier; the policy control function network element registers the session identifier to the binding support function network element. Based on the solution, the first session management network element and the second session management network element can be selected to the same policy control function network element for the session of the same terminal.
  • the first session management network element is an intermediate session management network element; correspondingly, the policy control function network element receives the service area information of the first session management network element, including: the policy control function network element receiving a first request message from the second session management network element, where the first request message carries the service area information of the first session management network element and the first session management network element receives the address information of the first PCC rule, where
  • the second session management network element is an anchor session management network element; correspondingly, the policy control function network element sends the first PCC rule, including: the policy control function network element receives the first according to the first session management network element The address information of the PCC rule sends the first PCC rule to the first session management network element.
  • the first session management network element and the policy control function network element in the embodiment of the present application may communicate through the second session management network element, or may directly communicate; the second session management network element in this embodiment of the present application.
  • the network element of the policy control function can communicate directly, which is not specifically limited in this embodiment of the present application.
  • the first request message further carries the service area information of the second session management network element.
  • the method for obtaining the PCC rule provided by the embodiment of the present application may further include: the policy control function network element manages the network element according to the second session.
  • the service area information, the second PCC rule is determined, the second PCC rule includes an application-related PCC rule corresponding to the second session management network element, and the policy control function network element sends the second PCC to the second session management network element rule.
  • the PCC rule obtaining method according to the embodiment of the present application may obtain the corresponding application-related PCC rule, not only the intermediate session management network element serving the current area of the terminal, but also the session management network element according to the administrative area.
  • the anchor session management network element can also obtain the corresponding application-related PCC rules.
  • the first session management network element is an intermediate session management network element.
  • the PCC rule acquisition method provided by the embodiment of the present application may further include: the policy control function network element receives the corresponding corresponding to the first session management network element. The updated session information; the policy control function network element determines at least one of the third PCC rule and the fourth PCC rule according to the updated session information, where the third PCC rule includes the local corresponding to the first session management network element a session policy, the fourth PCC rule includes a local session policy corresponding to the second session management network element, where the second session management network element is an anchor session management network element; the policy control function network element sends the third PCC rule and At least one of the fourth PCC rules. Based on the solution, the intermediate session management network element and the anchor session management network element may obtain the corresponding local session policy in the case that the session corresponding to the intermediate session management network element is updated.
  • the first session management network element is an anchor session management network element; correspondingly, the policy control function network element receives the service area information of the first session management network element, including: a policy control function network.
  • the policy control function network element receives the service area information of the first session management network element, including: a policy control function network.
  • the function network element sends the first PCC rule to the first session management network element. That is to say, the first session management network element and the policy control function network element in the embodiment of the present application can directly communicate.
  • the first request message further carries the service area information of the second session management network element, and the second session management network element receives the address information of the second PCC rule, where the second session management network element is an intermediate session.
  • the management network element, the second PCC rule includes an application-related PCC rule corresponding to the second session management network element;
  • the PCC rule acquisition method provided by the embodiment of the present application may further include: the policy control function network element is managed according to the second session The service area information of the network element determines the second PCC rule; the policy control function network element sends the second PCC rule to the second session management network element according to the second session management network element receiving the address information of the second PCC rule.
  • the PCC rule obtaining method may obtain the corresponding application-related PCC rule, not only the intermediate session management network element serving the current area of the terminal, but also the session management network element according to the administrative area.
  • the anchor session management network element can also obtain the corresponding application-related PCC rules.
  • the first session management network element is an anchor session management network element;
  • the policy control function network element receives service area information of the first session management network element, including: policy control function network element receiving a second request message from the first session management network element, the second request message carrying service area information of the first session management network element; correspondingly, the policy control function network element sends the first PCC rule, including: a policy The control function network element sends a response message to the first session management network element, where the response message carries the first PCC rule. That is to say, the first session management network element and the policy control function network element in the embodiment of the present application can directly communicate.
  • the second request message further carries the service area information of the second session management network element, where the second session management network element is an intermediate session management network element.
  • the PCC rule obtaining method provided by the embodiment of the present application may also be The method includes: the policy control function network element determines, according to the service area information of the second session management network element, a second PCC rule, where the second PCC rule includes an application-related PCC rule corresponding to the second session management network element; The response message further carries the second PCC rule, and the second session management network element sends the second PCC rule to the first session management network element.
  • the PCC rule obtaining method may obtain the corresponding application-related PCC rule, not only the intermediate session management network element serving the current area of the terminal, but also the session management network element according to the administrative area.
  • the anchor session management network element can also obtain the corresponding application-related PCC rules.
  • the foregoing response message further includes indication information, where the indication information is used to indicate at least one of the first PCC rule or the second PCC rule.
  • the first session management network element may determine the second PCC rule from the first PCC rule and the second PCC rule according to the indication information.
  • the service area information in the embodiment of the present application may include the served data network access identifier DNAI list, or the identifier information of the served area, or Location information of the serviced terminal.
  • a first session management network element having the function of implementing the method of any of the above aspects.
  • This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • a fourth aspect provides a first session management network element, including: a processor and a memory; the memory is configured to store a computer execution instruction, and when the first session management network element is running, the processor executes the memory storage The computer executes instructions to cause the first session management network element to perform the PCC rule acquisition method as described in any of the first aspects above.
  • a first session management network element includes: a processor; the processor is configured to be coupled to a memory, and after reading an instruction in the memory, execute the first aspect according to the instruction according to the instruction A method for obtaining a PCC rule as described.
  • a computer readable storage medium is provided, the instructions being stored in a computer readable storage medium, when executed on a computer, causing the computer to perform the PCC rules of any of the above first aspects Get the method.
  • a computer program product comprising instructions for causing a computer to perform the PCC rule acquisition method of any of the above first aspects when executed on a computer is provided.
  • a chip system in an eighth aspect, includes a processor, configured to support the first session management network element to implement the functions involved in the foregoing first aspect, for example, acquiring service area information of the first session management network element. .
  • the chip system further includes a memory for storing necessary program instructions and data necessary for the first session management network element.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • a policy control function network element having the function of implementing the method of any of the above second aspects.
  • This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • a tenth aspect provides a policy control function network element, including: a processor and a memory; the memory is configured to store a computer execution instruction, and when the policy control function network element is running, the processor executes the computer stored by the memory Executing an instruction to cause the policy control function network element to perform the PCC rule acquisition method according to any one of the above second aspects.
  • An eleventh aspect provides a policy control function network element, including: a processor; the processor is configured to be coupled to a memory, and after reading an instruction in the memory, execute the second aspect according to the instruction according to the instruction A method for obtaining a PCC rule as described.
  • a twelfth aspect a computer readable storage medium having stored therein instructions that, when run on a computer, cause the computer to perform the PCC of any of the above second aspects Rule acquisition method.
  • a computer program product comprising instructions for causing a computer to perform the PCC rule acquisition method of any of the above second aspects when executed on a computer is provided.
  • a chip system comprising a processor, configured to support a policy control function network element to implement the functions involved in the second aspect, for example, managing service area information of the network element according to the first session , determine the first PCC rule.
  • the chip system further includes a memory for storing program instructions and data necessary for the policy control function network element.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • the fifteenth aspect provides a policy and charging control PCC rule obtaining system, where the PCC rule obtaining system includes: a first session management network element and a policy control function network element; and a first session management network element, configured to send the first a service area information of the session management network element; the policy control function network element is configured to receive the service area information of the first session management network element, and determine the first PCC rule according to the service area information of the first session management network element
  • the first PCC rule includes an application-related PCC rule policy control function network element corresponding to the first session management network element, configured to send the first PCC rule, and the first session management network element is further configured to receive the The first PCC rule.
  • the first session management network element is an intermediate session management network element or an anchor session management network element; the first session management network element is configured to send service area information of the first session management network element,
  • the method includes: the service area information used to send the first session management network element to the policy control function network element, and the policy control function network element, configured to receive the service area information of the first session management network element, including: The service area information of the first session management network element of the first session management network element, and the policy control function network element, configured to send the first PCC rule, and configured to: send the first PCC to the first session management network element
  • the first session management network element is further configured to receive the first PCC rule, and the method includes: receiving the first PCC rule from the network element of the policy control function.
  • the session management network element is an intermediate session management network element;
  • the PCC rule acquisition system further includes a second session management network element, where the second session management network element is an anchor session management network element;
  • the first session management network element is configured to send the service area information of the first session management network element, and the method includes: sending the service area information of the first session management network element to the second session management network element, and the first session The management network element receives the address information of the first PCC rule, and the second session management network element is configured to receive the service area information of the first session management network element from the first session management network element and the first session management network element.
  • the policy control function network element configured to receive the service area information of the first session management network element, including: for receiving the second session management The first request message of the element; the policy control function network element, configured to send the first PCC rule, comprising: receiving, according to the first session management network element, address information of the first PCC rule, to the first session management network
  • the first PCC rule is sent by the first session management network element, and is configured to receive the first PCC rule, and the method includes: receiving the first PCC rule from the network element of the policy control function.
  • the first request message further carries the service area information of the second session management network element
  • the policy control function network element is further configured to determine the second PCC rule according to the service area information of the second session management network element, and Sending the second PCC rule to the second session management network element, where the second PCC rule includes an application-related PCC rule corresponding to the second session management network element, and the second session management network element is further configured to receive the policy control function.
  • This second PCC rule of the network element is further configured to determine the second PCC rule according to the service area information of the second session management network element, and Sending the second PCC rule to the second session management network element, where the second PCC rule includes an application-related PCC rule corresponding to the second session management network element, and the second session management network element is further configured to receive the policy control function. This second PCC rule of the network element.
  • the first session management network element is an anchor session management network element, and the first session management network element is configured to send service area information of the first session management network element, including:
  • the policy control function network element sends a first request message, where the first request message carries the service area information of the first session management network element, and the policy control function network element is configured to send the first PCC rule, including: A session management network element sends the first PCC rule.
  • the first session management network element is further configured to receive the first PCC rule, and the method includes: receiving the first PCC rule from the network element of the policy control function.
  • the PCC rule obtaining system further includes a second session management network element, where the second session management network element is an intermediate session management network element, and the second session management network element is configured to send the first session management network element to the first session management network element.
  • the service area information of the second session management network element and the second session management network element receive the address information of the second PCC rule, where the second PCC rule includes an application-related PCC rule corresponding to the second session management network element;
  • the first session management network element is further configured to receive the service area information of the second session management network element from the second session management network element, and the second session management network element receives the address information of the second PCC rule;
  • the first request message further carries the service area information of the second session management network element and the second session management network element receives the address information of the second PCC rule;
  • the policy control function network element is further used according to the first
  • the service area information of the second session management network element determines the second PCC rule, and receives the address information of the second PCC rule according to the second
  • the first session management network element is an intermediate session management network element;
  • the PCC rule acquisition system further includes a second session management network element, where the second session management network element is an anchor session management network element.
  • the first session management network element configured to send the service area information of the first session management network element, including: service area information for sending the first session management network element to the second session management network element;
  • the management network element is configured to receive the service area information of the first session management network element from the first session management network element, and send a second request message to the policy control function network element, where the second request message carries the first
  • the service area information of the session management network element, the policy control function network element configured to receive the service area information of the first session management network element, including: receiving the second request message from the second session management network element;
  • the function network element configured to send the first PCC rule, includes: sending a response message to the second session management network element, where the response message carries the first PCC rule; the second session management network And receiving the response message from the network element of the policy control function
  • the second request message further carries the service area information of the second session management network element
  • the policy control function network element is further configured to determine the second PCC rule according to the service area information of the second session management network element.
  • the second PCC rule includes an application-related PCC rule corresponding to the second session management network element; correspondingly, the response message further carries the second PCC rule.
  • the first session management network element is an anchor session management network element, and the first session management network element is configured to send service area information of the first session management network element, including: The control function network element sends a second request message, where the second request message carries the service area information of the first session management network element, and the policy control function network element is configured to receive the service area information of the first session management network element, including: The second request message is received from the first session management network element.
  • the policy control function network element is configured to send the first PCC rule, and the method is configured to: send a response message to the first session management network element, where the response message carries The first PCC rule.
  • the PCC rule obtaining system further includes a second session management network element, where the second session management network element is an intermediate session management network element, and the second session management network element is configured to send the first session management network element to the first session management network element.
  • the second session management network element service area information
  • the first session management network element is further configured to receive the service area information of the second session management network element from the second session management network element; correspondingly, the second request message And carrying the service area information of the second session management network element
  • the policy control function network element is further configured to determine a second PCC rule according to the service area information of the second session management network element, where the second PCC rule includes the first
  • the application-related PCC rule corresponding to the second session management network element; correspondingly, the response message further carries the second PCC rule
  • the first session management network element is further configured to send the second PCC rule to the second session management network element
  • the second session management network element is further configured to receive a second PCC rule from the first session management network element.
  • the first session management network element may also be the first session management network element described in any one of the foregoing third to fifth aspects; or A computer readable storage medium comprising: the computer program product comprising the instructions of the seventh aspect; or the chip system of the above eighth aspect.
  • the policy control function network element may further be the policy control function network element described in any one of the foregoing ninth to eleventh aspects; or A computer readable storage medium comprising: the computer program product comprising the instructions of the above-described thirteenth aspect; or the chip system of the above fourteenth aspect.
  • FIG. 1 is a schematic structural diagram of a PCC rule acquiring system according to an embodiment of the present application
  • FIG. 2 is a schematic diagram of a network architecture of a 5G system according to an embodiment of the present application
  • FIG. 3 is a schematic structural diagram of hardware of a communication device according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic flowchart 1 of a method for acquiring a PCC rule according to an embodiment of the present application
  • FIG. 5 is a schematic diagram of a PCC architecture according to an embodiment of the present application.
  • FIG. 6 is a second schematic flowchart of a method for acquiring a PCC rule according to an embodiment of the present disclosure
  • FIG. 7 is a schematic flowchart 3 of a method for acquiring a PCC rule according to an embodiment of the present disclosure
  • FIG. 8 is a schematic structural diagram of a first session management network element according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a network element of a policy control function according to an embodiment of the present disclosure.
  • the words “first”, “second”, and the like are used to distinguish the same items or similar items whose functions and functions are substantially the same. Those skilled in the art can understand that the words “first”, “second” and the like do not limit the number and execution order, and the words “first”, “second” and the like are not necessarily limited.
  • the network architecture and the service scenario described in the embodiments of the present application are for the purpose of more clearly illustrating the technical solutions of the embodiments of the present application, and are not limited to the technical solutions provided by the embodiments of the present application.
  • the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.
  • the PCC rule obtaining system 10 includes a first session management network element 101 and a policy control function network element 102.
  • the first session management network element 101 is configured to send service area information of the first session management network element 101.
  • the policy control function network element 102 is configured to receive the service area information of the first session management network element 101, and determine the first PCC rule according to the service area information of the first session management network 101, where the first PCC rule includes the first The application-related PCC rules corresponding to the session management NE.
  • the policy control function network element 102 is further configured to send the first PCC rule.
  • the first session management network element 101 is configured to receive the first PCC rule.
  • the application related PCC rule in the embodiment of the present application refers to a PCC rule generated according to a request message received from an application function (AF), where the content described by the PCC rule includes at least location information of the application. , such as the data network access identifier (DNAI) corresponding to the location of the application.
  • AF application function
  • DNAI data network access identifier
  • the content described by the application-related PCC rule corresponding to the session management network element includes at least deployment information that is applied in the service area of the session management network element.
  • the content described by the application-related PCC rule corresponding to the first session management network element includes at least the deployment information applied in the service area of the first session management network element; and the application-related PCC corresponding to the second session management network element.
  • the content described in the rule includes at least the deployment information that is applied in the service area of the second session management network element, and is not described here.
  • the service area information in the embodiment of the present application may include the served DNAI list, or the identifier information of the served area, or the location information of the served terminal, which is not specifically limited in this embodiment of the present application.
  • the first session management network element 101 may directly communicate with the policy control function network element 102, and may also perform communication by forwarding of other devices, which is not specifically limited in this embodiment of the present application.
  • the session management network element needs to acquire PCC rules related to all applications in the entire PLMN when acquiring the PCC rules.
  • the policy control function network element may obtain the service area information of the first session management network element, and send the first PCC rule according to the service area information of the first session management network.
  • the first PCC rule is configured to enable the first session management network element to obtain the first PCC rule, where the first PCC rule includes an application-related PCC rule corresponding to the first session management network element.
  • the PCC rule acquisition system may enable the session management network element to obtain the application-related PCC rule corresponding to the session management network element, in the case that the session management network element is divided according to the administrative area. Therefore, compared with the prior art, the number of PCC rules related to application transmitted between the policy control function network element and the session management network element can be greatly reduced, thereby saving transmission resources between the policy control function network element and the session management network element. .
  • the first session management network element 101 in the embodiment of the present application may be an anchor session management network element or an intermediate session management network element, which is not specifically limited in this embodiment of the present application.
  • the anchor session management network element in the embodiment of the present application is a session management network element that manages an anchor user plane function network element, and the anchor user plane function network element is a user plane function network element connected to the data network, and It can be called a PDU session anchor (PSA), which is described here in detail, and will not be described below.
  • PSA PDU session anchor
  • the intermediate session management network element in the embodiment of the present application is a session management network element that manages an intermediate user plane function network element, and the intermediate user plane function network element is a user plane function network element that interfaces with the current access device of the terminal.
  • the intermediate user plane function network element is a user plane function network element that interfaces with the current access device of the terminal.
  • the first session management network element 101 is configured to send the service area information of the first session management network element 101, and the service area information used for sending the first session management network element to the policy control function network element 102.
  • the policy control function network element 102 is configured to receive service area information of the first session management network element 101, and includes: service area information for receiving the first session management network element from the first session management network element 101.
  • the policy control function network element 102 is configured to send the first PCC rule, and is configured to: send the first PCC rule to the first session management network element 101.
  • the first session management network element 101 is further configured to receive the first PCC rule, including: receiving the first PCC rule from the policy control function network element 102.
  • the first session management network element 101 and the policy control function network element 102 in the embodiment of the present application can communicate directly, which is not specifically limited in this embodiment of the present application.
  • the PCC rule obtaining system 10 may further include a second session management network element 103.
  • a second session management network element 103 there are four cases:
  • the first session management network element 101 is an intermediate session management network element
  • the second session management network element 103 is an anchor session management network element.
  • the first session management network element 101 is configured to send the service area information of the first session management network element 101, and includes: the service area information used to send the first session management network element 101 to the second session management network element 103, and the first The session management network element 101 receives the address information of the first PCC rule.
  • the second session management network element 103 is configured to receive the service area information of the first session management network element 101 from the first session management network element 101 and the address information of the first session management network element 101 receiving the first PCC rule, and
  • the policy control function network element 102 sends a first request message, where the first request message carries the service area information of the first session management network element 101 and the first session management network element 101 receives the address information of the first PCC rule.
  • the policy control function network element 102 is configured to receive the service area information of the first session management network element 101, and includes: receiving the first request message from the second session management network element 103.
  • the policy control function network element 102 is configured to send the first PCC rule, and is configured to send the first PCC rule to the first session management network element 101 according to the first session management network element 101 receiving the address information of the first PCC rule.
  • the first session management network element 101 and the policy control function network element 102 in the embodiment of the present application may communicate through the second session management network element 103, or may directly communicate; the second session in this embodiment of the present application
  • the management network element 103 and the policy control function network element 102 can communicate directly, which is not specifically limited in this embodiment of the present application.
  • the first request message in the embodiment of the present application may further carry the service area information of the second session management network element 103.
  • the policy control function network element 102 is further configured to determine a second PCC rule according to the service area information of the second session management network element 103, and send a second PCC rule to the second session management network element 103, where the second The PCC rule includes an application-related PCC rule corresponding to the second session management network element 103.
  • the second session management network element 103 is further configured to receive a second PCC rule from the policy control function network element 102.
  • the first session management network element 101 is an anchor session management network element
  • the second session management network element 103 is an intermediate session management network element.
  • the first session management network element 101 is configured to send the service area information of the first session management network element 101, and is configured to send a first request message to the policy control function network element 102, where the first request message carries the first session management network. Service area information of element 101.
  • the policy control function network element 102 is configured to send the first PCC rule, and is configured to: send the first PCC rule to the first session management network element 101.
  • the first session management network element 101 is further configured to receive the first PCC rule, including: receiving the first PCC rule from the policy control function network element 102.
  • the first session management network element 101 and the policy control function network element 102 in the embodiment of the present application can directly communicate.
  • the second session management network element 103 is configured to send the service area information of the second session management network element 103 to the first session management network element 101, and the second session management network element 103 receives the Address information of the second PCC rule, where the second PCC rule includes an application-related PCC rule corresponding to the second session management network element 103.
  • the first session management network element 101 is further configured to receive service area information of the second session management network element 103 from the second session management network element 103 and the second session management network element 103 receives the address information of the second PCC rule.
  • the first request message may further carry the service area information of the second session management network element 103 and the second session management network element 103 receives the address information of the second PCC rule.
  • the policy control function network element 102 is further configured to determine a second PCC rule according to the service area information of the second session management network element 103, and receive the address information of the second PCC rule according to the second session management network element 103, to the second The session management network element 103 sends a second PCC rule.
  • the second session management network element 103 is further configured to receive a second PCC rule from the policy control function network element 102.
  • the second session management network element 103 and the policy control function network element 102 in the embodiment of the present application may communicate with each other through the first session management network element 101, or may directly communicate, which is not specifically limited in this embodiment of the present application. .
  • the first session management network element 101 is an intermediate session management network element
  • the second session management network element 103 is an anchor session management network element.
  • the first session management network element 101 is configured to send service area information of the first session management network element 101, and includes: service area information used for sending the first session management network element 101 to the second session management network element 103;
  • the second session management network element 103 is configured to receive service area information of the first session management network element 101 from the first session management network element 101, and send a second request message to the policy control function network element 102, the second request.
  • the message carries the service area information of the first session management network element 101.
  • the policy control function network element 102 is configured to receive the service area information of the first session management network element 101, and includes: receiving the first request message from the second session management network element 103.
  • the policy control function network element 102 is configured to send a first PCC rule, where the method includes: sending a response message to the second session management network element 103, where the response message carries the first PCC rule;
  • the second session management network element 103 is further configured to receive a response message from the policy control function network element 102, and send the first PCC rule to the first session management network element 101;
  • the first session management network element 101 is further configured to receive the first PCC rule, and is configured to: receive the first PCC rule from the second session management network element 103.
  • the first session management network element 101 and the policy control function network element 102 in the embodiment of the present application can communicate through the second session management network element 103; the second session management network element 103 in the embodiment of the present application is The policy control function network element 102 can communicate directly, which is not specifically limited in this embodiment of the present application.
  • the second request message in the embodiment of the present application may further carry the service area information of the second session management network element 103.
  • the policy control function network element 102 is further configured to determine a second PCC rule according to the service area information of the second session management network element 103, where the second PCC rule includes an application-related PCC rule corresponding to the second session management network element 103.
  • the response message can also carry the second PCC rule.
  • the first session management network element 101 is an anchor session management network element
  • the second session management network element 103 is an intermediate session management network element.
  • the first session management network element 101 is configured to send the service area information of the first session management network element 101, and is configured to: send a second request message to the policy control function network element 102, where the second request message carries the first session management network. Service area information of element 101.
  • the policy control function network element 102 is configured to receive the service area information of the first session management network element 101, and includes: a second request message for receiving the first session management network element 101.
  • the policy control function network element 102 is configured to send the first PCC rule, and is configured to: send a response message to the first session management network element 101, where the response message carries the first PCC rule.
  • the first session management network element 101 and the policy control function network element 102 in the embodiment of the present application can directly communicate.
  • the second session management network element 103 is configured to send the service area information of the second session management network element 103 to the first session management network element 101.
  • the first session management network element 101 is further configured to receive service area information of the second session management network element 103 from the second session management network element 103.
  • the second request message may further carry the service area information of the second session management network element 103.
  • the policy control function network element 102 is further configured to determine a second PCC rule according to the service area information of the second session management network element 103, where the second PCC rule includes an application-related PCC rule corresponding to the second session management network element 103.
  • the response message may also carry the second PCC rule
  • the first session management network element 101 is further configured to send a second PCC rule to the second session management network element 103.
  • the second session management network element 103 is further configured to receive a second PCC rule from the first session management network element 101.
  • the second session management network element 103 and the policy control function network element 102 in the embodiment of the present application can communicate with each other through the first session management network element 101, which is not specifically limited in this embodiment of the present application.
  • the PCC rule acquisition system provided by the embodiment of the present application can obtain the corresponding intermediate session management network element serving only the current region of the terminal in the case that the session management network element is divided according to the administrative area.
  • the application-related PCC rules, and the anchor session management network element can also obtain the corresponding application-related PCC rules.
  • the PCC rule obtaining system 10 shown in FIG. 1 can be applied to the 5G network and other networks in the future, which is not specifically limited in this embodiment of the present invention.
  • the network element or entity corresponding to the anchor session management network element may be an anchor SMF (anchor SMF, A in the 5G network).
  • anchor SMF anchor SMF
  • the network element or entity corresponding to the intermediate session management network element may be an intermediate SMF (intermediate SMF, I-SMF) network element in the 5G network;
  • the anchor point user plane function network element corresponds to
  • the network element or the entity may be an anchor UPF (A-UPF) network element in the 5G network;
  • the network element or entity corresponding to the intermediate user plane function network element may be an intermediate UPF in the 5G network (intermediate
  • the network element or entity corresponding to the above-mentioned policy control function network element may be a PCF network element in a 5G network.
  • the 5G network may further include an access device, an access and mobility management function (AMF) network element, a unified data management (UDM) network element, and the like.
  • AMF access and mobility management function
  • UDM unified data management
  • the embodiment of the present application does not specifically limit this.
  • the I-SMF network element is a network A service
  • the A-SMF network element is a network B service.
  • the terminal accesses the network through the access device, and the terminal communicates with the AMF network element through the next generation (N) interface 1 (N1); the access device communicates with the AMF network element through the N2 interface (N2 for short).
  • the N3 interface (referred to as N3) communicates with the I-UPF network element; the AMF network element communicates with the I-SMF network element through the N11 interface (N11 for short), communicates with the PCF network element through the N15 interface (referred to as N15), and passes through the N8 interface.
  • N8 for short communicates with the UDM network element; the A-SMF network element communicates with the UDM network element through the N10 interface (N10 for short), communicates with the PCF network element through the N7 interface (N7 for short), and passes the N16* interface (N16* for short).
  • the I-UPF network element communicates with the A-UPF network element through the N9 interface (N9); the A-UPF network element accesses the data network through the N6 interface (N6 for short).
  • the Nx in FIG. 2 may be a modification performed on the N7, or may be a newly defined interface.
  • the N16* may be a modification performed on the N16, or may be a newly defined interface. This is not specifically limited.
  • the name of the interface between the network elements in FIG. 2 is only an example. In the specific implementation, the interface name may be another name, which is not specifically limited in this embodiment of the present application.
  • the A-SMF network element, the I-SMF network element, the access device, the AMF network element, the UDM network element, the PCF network element, the I-UPF network element, and the A-UPF network element in FIG. 2 only Is a name, the name does not limit the device itself.
  • the corresponding network element or entity may be other names, which are not specifically limited in this embodiment of the present application.
  • the I-UPF network element may be replaced by an I-UPF or an I-UPF entity, etc., and is uniformly described herein, and details are not described herein again.
  • the 5G network shown in FIG. 2 is only an exemplary example in which the area where the current access device of the terminal is located and the service area of the A-SMF network element are different, and of course, the current access of the terminal.
  • the area where the device is located and the service area of the A-SMF network element may also be the same. That is, the I-SMF network element is only needed when the terminal moves out of the service area of the A-SMF network element, and when the terminal is located in the A-SMF network.
  • the I-SMF network element is not required for the service area of the element (ie, network B in Figure 2).
  • the terminal may be inserted into the I-UPF network element controlled by the A-SMF network element in the service area of the A-SMF, which is not specifically limited in this embodiment of the present application.
  • the terminal involved in the embodiment of the present application may include various handheld devices having wireless communication functions, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to the wireless modem; Including user unit (subscriber unit), cellular phone, smart phone, wireless data card, personal digital assistant (PDA) computer, tablet computer, wireless modem (modem), handheld device Handheld, laptop computer, cordless phone or wireless local loop (WLL) station, machine type communication (MTC) terminal, user equipment (user equipment) , UE), mobile station (MS), terminal device or relay user equipment.
  • the relay user equipment may be, for example, a 5G residential gateway (RG).
  • RG 5G residential gateway
  • the access device involved in the embodiment of the present application refers to a device that accesses the core network, and may be, for example, a base station, a broadband network gateway (BNG), an aggregation switch, and a non-third-generation cooperation. 3rd generation partnership project (3GPP) access equipment, etc.
  • the base station may include various forms of base stations, such as macro base stations, micro base stations (also referred to as small stations), relay stations, access points, and the like.
  • the first session management network element, the second session management network element, or the policy control function network element in the embodiment of the present application may be implemented by one device, or may be implemented by multiple devices, or may be one.
  • a functional module in the device is not specifically limited in this embodiment of the present application. It can be understood that the above functions can be either a network component in a hardware device, a software function running on dedicated hardware, or a virtualization function instantiated on a platform (for example, a cloud platform).
  • FIG. 3 is a schematic diagram showing the hardware structure of a communication device according to an embodiment of the present application.
  • the communication device 300 includes at least one processor 301, a communication line 302, a memory 303, and at least one communication interface 304.
  • the processor 301 can be a general central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the execution of the program of the present application. integrated circuit.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • Communication line 302 can include a path for communicating information between the components described above.
  • the communication interface 304 uses a device such as any transceiver for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc. .
  • a device such as any transceiver for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc. .
  • RAN radio access network
  • WLAN wireless local area networks
  • the memory 303 can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type that can store information and instructions.
  • the dynamic storage device can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, and a disc storage device. (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be Any other media accessed, but not limited to this.
  • the memory may be present independently and connected to the processor via communication line 302. The memory can also be integrated with the processor.
  • the memory 303 is configured to store computer execution instructions for executing the solution of the present application, and is controlled by the processor 301 for execution.
  • the processor 301 is configured to execute a computer execution instruction stored in the memory 303, so as to implement the PCC rule acquisition method provided by the following embodiments of the present application.
  • the computer-executed instructions in the embodiment of the present application may also be referred to as an application code, which is not specifically limited in this embodiment of the present application.
  • processor 301 may include one or more CPUs, such as CPU0 and CPU1 in FIG.
  • communication device 300 can include multiple processors, such as processor 301 and processor 308 in FIG. Each of these processors can be a single-CPU processor or a multi-core processor.
  • processors herein may refer to one or more devices, circuits, and/or processing cores for processing data, such as computer program instructions.
  • the communication device 300 can also include an output device 305 and an input device 306.
  • Output device 305 is in communication with processor 301 and can display information in a variety of ways.
  • the output device 305 can be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector. Wait.
  • Input device 306 is in communication with processor 301 and can receive user input in a variety of ways.
  • input device 306 can be a mouse, keyboard, touch screen device, or sensing device, and the like.
  • the communication device 300 described above may be a general purpose device or a dedicated device.
  • the communication device 300 can be a desktop computer, a portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, an embedded device, or the like in FIG. device.
  • PDA personal digital assistant
  • the embodiment of the present application does not limit the type of the communication device 300.
  • the PCC rule acquisition system shown in FIG. 1 is applied to the 5G network shown in FIG. 2, and the first I-SMF network element is required in the session establishment process, as shown in FIG. 4, which is provided by the embodiment of the present application.
  • a PCC rule acquisition method, the PCC rule acquisition method includes the following steps:
  • the first I-SMF network element sends a session establishment request to the A-SMF network element, so that the A-SMF network element receives the session establishment request from the first I-SMF network element.
  • the session establishment request from the first I-SMF network element is triggered by the AMF network element sending a session establishment request to the first I-SMF network element, and the related implementation may refer to the existing solution. This will not be repeated here.
  • the A-SMF network element sends a request message 1 to the PCF network element, so that the PCF network element receives the request message 1 from the A-SMF network element.
  • the request message 1 carries the service area information of the A-SMF network element.
  • the service area information of the A-SMF network element may include, for example, a DNAI list served by the A-SMF network element, or identifier information of an area served by the A-SMF network element, or A- The location information of the terminal served by the SMF network element, and the like are not specifically limited in this embodiment of the present application.
  • the request message 1 in the embodiment of the present application may further carry a type of the A-SMF network element, where the type of the A-SMF network element is used to represent the role of the A-SMF network element in the session of the terminal.
  • the type of the A-SMF network element is an A-SMF network element, which is not specifically limited in this embodiment of the present application.
  • the PCF network element determines the PCC rule 1 according to the service area information of the A-SMF network element, where the PCC rule 1 includes an application-related PCC rule corresponding to the A-SMF network element.
  • the PCF network element determines, according to the service area information of the A-SMF network element, that the PCC rule 1 may specifically include: The network element determines PCC Rule 1 based on the list of DNAIs served by the A-SMF network element. For example, PCC Rule 1 only includes application-related PCC rules deployed in the DNAI served by the A-SMF network element.
  • the PCF network element determines the PCC rule 1 according to the service area information of the A-SMF network element.
  • the method may include: determining, by the PCF network element, the DNAI list served by the A-SMF network element according to the identifier information of the area served by the A-SMF network element, and then determining, by the PCF network element, the PCC rule according to the DNAI list served by the A-SMF network element.
  • the PCF network element determines the PCC rule 1 according to the service area information of the A-SMF network element.
  • the method may include: determining, by the PCF network element, the identifier information of the area served by the A-SMF network element according to the location information of the terminal served by the A-SMF network element, and further determining the identifier of the area served by the PCF network element according to the A-SMF network element.
  • the information determines the list of DNAIs served by the A-SMF network element, and the PCF network element determines the PCC Rule 1 based on the list of DNAIs served by the A-SMF network element.
  • the PCF network element may also consider the type of the A-SMF network element when determining the PCC rule 1. That is to say, the PCF network element can determine the PCC rule 1 according to the service area information of the A-SMF network element and the type of the A-SMF network element.
  • the type of the A-SMF network element carried in the request message 1 is an A-SMF network element
  • the PCC rule 1 may include a traffic steering policy, where the traffic steering policy is used.
  • the characterization data is transmitted from the UPF network element (ie, the A-UPF network element in FIG. 2) connected to the data network to the data network, but at this time, the PCC rule 1 does not include an uplink offloading policy, and the uplink offloading strategy is used to represent the data. How to perform local distribution.
  • the PCF network element sends a response message 1 to the A-SMF network element, so that the A-SMF network element receives the response message 1 from the PCF network element, where the response message 1 carries the PCC rule 1.
  • the response message 1 may further include a session-related session policy resource identifier, where the session policy resource identifier is used to locate the session policy resource related to the session, and the embodiment of the present application does not specifically limited.
  • the session-related session policy resource identifier may be, for example, a universal resource identifier (URI), which may be used to uniquely locate the session policy resource related to the session.
  • URI universal resource identifier
  • the A-SMF network element sends a session establishment response to the first I-SMF network element, so that the first I-SMF network element receives the session establishment response from the A-SMF network element.
  • the session establishment response in the embodiment of the present application may further include the session-related session policy resource identifier.
  • the embodiment does not specifically limit this.
  • the session-related session policy resource identifier may also be carried in other messages and sent to the first I-SMF network element, which is not specifically limited in this embodiment of the present application.
  • the A-SMF network element may further send information about the PCF network element to the first I-SMF network element, where the information of the PCF network element is used for the first I-SMF network element and the A- The SMF network element selects the same PCF network element.
  • the information of the PCF network element may be, for example, an address of the PCF network element or an identifier of the PCF network element.
  • the first I-SMF network element may find and communicate with the PCF network element according to the information of the PCF network element. This embodiment of the present application does not specifically limit this.
  • the information of the PCF network element may be carried in the session establishment response and sent to the first I-SMF network element, or may be carried in other messages and sent to the first I-SMF network element. limited.
  • the session-related session policy resource identifier may also include information of the PCF network element, that is, according to the session-related session policy resource identifier, the first I-SMF network element may also be The A-SMF network element selects the same PCF network element, which is not specifically limited in this embodiment of the present application.
  • PCC rule obtaining method may further include the following steps:
  • the first I-SMF network element sends a request message 2 to the PCF network element, so that the PCF network element receives the request message 2 from the first I-SMF network element.
  • the request message 2 carries the service area information of the first I-SMF network element.
  • the service area information of the first I-SMF network element may include, for example, a list of DNAIs served by the first I-SMF network element, or an area served by the first I-SMF network element.
  • the identification information, or the location information of the terminal served by the first I-SMF network element, is not specifically limited in this embodiment of the present application.
  • the request message 2 in the embodiment of the present application may further carry a type of the first I-SMF network element, where the type of the first I-SMF network element is used to represent the first I-SMF network element.
  • the role of the session in the terminal, such as the type of the first I-SMF network element, is an I-SMF network element, which is not specifically limited in this embodiment.
  • the request message 2 may further carry the session policy resource identifier, so that the PCF network The element may locate the session policy resource related to the session according to the session policy resource identifier.
  • the request message 2 may carry the subscriber permanent identity (SUPI) of the terminal.
  • SUPI subscriber permanent identity
  • the session identifier corresponding to the session of the terminal wherein the SUPI and the session identifier are used to associate the session-related session policy resource corresponding to the first I-SMF network element with the session-related session policy resource corresponding to the A-SMF network element.
  • a session-related session policy resource may be created for the first I-SMF network element and the A-SMF network element respectively, and then, when the first I-SMF network element sends the session information to the PCF network element, When the SUPI of the terminal and the session identifier corresponding to the session of the terminal, or when the A-SMF network element sends the SUPI of the terminal to the PCF network element and the session identifier corresponding to the session of the terminal, the PCF network element may use the first I
  • the session-related session policy resource corresponding to the SMF network element is associated with the session-related session policy resource corresponding to the A-SMF network element, and the session-related session policy resource can be determined.
  • the request message 2 may carry the SUPI of the terminal and the session corresponding to the terminal.
  • the session identifier so that the PCF network element can locate the session policy resource related to the session according to the SUPI and the session identifier. That is, for the session of the terminal, a session-related session policy resource may be created only for the first I-SMF network element and the A-SMF network element. For example, a session-related session policy may be created for the A-SMF network element.
  • the resource when the first I-SMF network element sends the SUPI of the terminal to the PCF network element and the session identifier corresponding to the session of the terminal, the PCF network element can locate the session policy resource related to the session according to the SUPI and the session identifier.
  • the embodiment does not specifically limit this.
  • the first I-SMF network element may send the request message to the PCF network element after determining the PCF network element according to the information of the PCF network element or the session-related session policy resource identifier in step S404.
  • the request message 2 is sent to the PCF network element.
  • the first I-SMF network element may send a query message to the binding support functionality (BSF) network element, where the query message carries the session identifier corresponding to the session of the terminal served by the first I-SMF network element.
  • BSF binding support functionality
  • the session identifier is used to select a PCF network element; further, the BSF network element may send a query response to the first I-SMF network element after selecting the PCF network element according to the session identifier, so that the first I-SMF network element can receive the The query response of the BSF network element, wherein the query response carries information of the PCF network element.
  • the BSF network element can save information about the PCF network element corresponding to the session.
  • the session identifier and the information of the PCF network element may be registered with the BSF network element, so that other network elements, such as the AF network element and the network are open.
  • the network exposure function (NEF) network element or the SMF network element can query the BSF network element according to the session identifier to obtain the information of the PCF network element corresponding to the session, so that the PCC message of the same session is sent to the same PCF network element.
  • the embodiment of the present application does not specifically limit this.
  • the session identifier in the PCF network element is usually obtained from the first SMF network element that establishes the session corresponding to the session identifier by the PCF network element. For example, in the embodiment of the present application, if the A-SMF network element first establishes a session with the PCF network element, the session identifier is obtained from the A-SMF network element; if the first I-SMF network element is first established with the PCF network element, For the session, the session identifier is obtained from the first I-SMF network element, and is uniformly described herein, and details are not described herein again.
  • the PCF network element determines, according to the service area information of the first I-SMF network element, the PCC rule 2, where the PCC rule 2 includes an application-related PCC rule corresponding to the first I-SMF network element.
  • the specific implementation of the PCC rule 2 is determined by the PCF network element according to the service area information of the first I-SMF network element. For reference, in step S402, the PCF network element determines the correlation of the PCC rule 1 according to the service area information of the A-SMF network element. Implementation, no longer repeat here.
  • the PCF network element may also consider the type of the first I-SMF network element when determining the PCC rule 2. That is, the PCF network element may determine the PCC rule 2 according to the service area information of the first I-SMF network element and the type of the first I-SMF network element. For example, if the type of the first I-SMF network element carried in the request message 2 in the embodiment of the present application is an I-SMF network element, the PCC rule 2 may include an uplink offloading policy, where the uplink offloading policy is used to represent data. Perform local distribution.
  • the PCC rule 2 may further include a traffic steering policy, where the traffic steering policy is used to indicate how data is transmitted from the UPF network element (ie, the A-UPF network element in FIG. 2) connected to the data network to the data network.
  • the traffic steering policy is used to indicate how data is transmitted from the UPF network element (ie, the A-UPF network element in FIG. 2) connected to the data network to the data network.
  • the embodiment of the present application does not specifically limit this.
  • the PCF network element sends a response message 2 to the first I-SMF network element, so that the first I-SMF network element receives the response message 2 from the PCF network element, where the response message 2 carries the PCC rule 2.
  • steps S400-S407 show that the A-SMF network element acquires the application-related PCC rule corresponding to the A-SMF network element in the session establishment process, and the first I-SMF network element acquires the application corresponding to the first I-SMF network element.
  • the specific implementation of the relevant PCC rules There is no necessary sequence between steps S400-S404 and steps S405-S407. Steps S400-S404 may be performed first, and steps S405-S407 may be performed as described above; or steps S405-S407 may be performed first, and then steps S405-S407 may be performed first. Steps 400-S404 are performed.
  • the session-related session policy resource identifier is not carried in step S405, and the session-related session policy resource identifier may be carried in step S407, and the session establishment request in step S400 may carry the session-related
  • the session policy resource identifier is not required to carry the session policy resource identifier associated with the session in steps S403-S404, and the A-SMF network element does not need to send the information of the PCF network element to the first I-SMF network element. The description will not be repeated below.
  • the first I-SMF network element may further send information of the PCF network element to the A-SMF network element, and the information of the PCF network element.
  • the same PCF network element is selected, which is not specifically limited in this embodiment of the present application.
  • Step S401 is initiated after the A-SMF network element receives the session establishment request from the AMF network element, and is uniformly described herein, and details are not described herein.
  • the terminal is located in the service area of the A-SMF network element during the session establishment process, only the A-SMF network element may be selected. In this case, only the steps S401-S403 may be performed, and the embodiment of the present application does not specifically limited.
  • the UE may need to update the PCC rule.
  • the PCC network element receives the request from the AF network element as an example.
  • the PCC rule acquisition method provided by the embodiment of the present application may further include the following steps. :
  • the AF network element sends a request message 3 to the PCF network element, so that the PCF network element receives the request message 3 from the AF network element.
  • the AF network element may send a request message 3 to the PCF network element.
  • the request message 3 carries the information of the application, the DNAI deployed by the application, or the identifier of the terminal to which the application is directed, and is not specifically limited in this embodiment.
  • the PCF network element sends the updated PCC rule 1 to the A-SMF network element, so that the A-SMF network element receives the updated PCC rule 1 from the PCF network element.
  • the PCF network element may determine, according to the service area information of the A-SMF network element, the type of the optional A-SMF network element, and the request message 3 received from the AF network element.
  • the A-SMF network element sends an updated PCC rule 1.
  • the PCF network element determines that an updated PCC rule 1 needs to be sent to the A-SMF network element in order to The deployment location of the application is notified to the A-SMF network element. That is to say, step S409 in the embodiment of the present application is an optional step. Step S409 is performed only when the PCC rule 1 needs to be updated.
  • the PCF network element sends the updated PCC rule 2 to the first I-SMF network element, so that the first I-SMF network element receives the updated PCC rule 2 from the PCF network element.
  • the PCF network element may be configured according to the service area information of the first I-SMF network element network element and the type of the optional first I-SMF network element, and the request received from the AF network element.
  • Message 3 determines if an updated PCC Rule 2 needs to be sent to the first I-SMF network element. For example, if the request message 3 of the AF network element indicates that a new application deployment is added to the service area of the first I-SMF network element, the PCF network element determines that the updated PCC rule 2 needs to be sent to the first I-SMF network element.
  • step S410 in the embodiment of the present application is an optional step. Step S410 is performed only when the PCC rule 2 needs to be updated, and is not described here.
  • step S409 and step S410 there is no necessary sequence of execution between step S409 and step S410, which may be performed first step S409, and then step S410; or step S410 may be performed first, and then step S409 is performed; Steps S409 and S410 may be performed at the same time, which is not specifically limited in this embodiment of the present application.
  • the PCF network element may also be corresponding to the first I-SMF network element.
  • Updated session information for PCC rule updates may further include the following steps:
  • the first I-SMF network element sends the updated session information corresponding to the first I-SMF network element to the PCF network element, so that the PCF network element receives the first I-SMF network element from the first I-SMF network element. Corresponding updated session information.
  • the first I-SMF network element may send the updated session information corresponding to the first I-SMF network element to the PCF network element.
  • the updated session information corresponding to the first I-SMF network element may be, for example, an internet protocol (IP) address of a local session, information applied on a local session, or local DNAI used in accessing a local session. At least one embodiment of the present application does not specifically limit this.
  • IP internet protocol
  • the PCF network element determines at least one of the PCC rule 3 and the PCC rule 4 according to the updated session information corresponding to the first I-SMF network element, where the PCC rule 3 includes the local session corresponding to the first I-SMF network element.
  • Policy, PCC Rule 4 includes a local session policy corresponding to the A-SMF network element.
  • the local session policy in the embodiment of the present application may include, for example, a charging policy of a local session or a quality of service (QoS) policy of the local session, which is not specifically limited in this embodiment of the present application.
  • QoS quality of service
  • the method for obtaining the PCC rule provided by the embodiment of the present application may further include the following steps:
  • the PCF network element sends the PCC rule 3 to the first I-SMF network element, so that the first I-SMF network element receives the PCC rule 3 from the PCF network element.
  • the method for obtaining the PCC rule provided by the embodiment of the present application may further include the following steps:
  • the PCF network element sends a PCC rule 4 to the A-SMF network element, so that the A-SMF network element receives the PCC rule 4 from the PCF network element.
  • the embodiment of the present application may also perform the steps S408-S410 and the steps S411-S414, which are not specifically limited in this embodiment of the present application.
  • the process of inserting, deleting, or switching the I-SMF network element may also occur.
  • the second I-SMF network element needs to be inserted when the terminal moves out of the service area of the A-SMF network element.
  • the first I-SMF network element needs to be switched when the terminal moves out of the service area of the first I-SMF network element; or, assuming a session The first I-SMF network element already exists.
  • the terminal moves back to the service area of the A-SMF network element from the service area of the first I-SMF network element, the information related to the first I-SMF network element needs to be deleted.
  • the following takes the switching of the I-SMF network element as an example:
  • the PCC rule acquisition method may further include the following steps:
  • the second I-SMF network element acquires a session-related session policy resource identifier.
  • the second I-SMF network element may obtain the session-related session policy resource identifier from the first I-SMF network element or the A-SMF network element, which is not specifically implemented in this embodiment of the present application. limited.
  • the AMF network element needs to send a session establishment request to the second I-SMF network element.
  • the information of the first I-SMF network element is sent to the second I-SMF network element, so that the second I-SMF network element searches for the corresponding first I-SMF network element according to the information of the first I-SMF network element.
  • the AMF network element needs to send A when sending the session establishment request to the second I-SMF network element.
  • the information of the SMF network element is sent to the second I-SMF network element, so that the second I-SMF network element searches for the corresponding A-SMF network element according to the information of the A-SMF network element, which is not specifically implemented in this embodiment of the present application. limited.
  • the response message 2 is replaced with the response message 4;
  • the PCC rule 2 in the steps S405-S407 is replaced with the PCC rule 5, and the related description can be referred to the steps S405-S407, and details are not described herein again.
  • the PCC rule obtaining method may further include the following steps:
  • the first I-SMF network element sends a deletion request to the PCF network element, so that the PCF network element receives the deletion request from the first I-SMF network element, where the deletion request is used to request to delete the session in the PCF network element.
  • the deletion request is used to request to delete the session in the PCF network element.
  • the information related to the first I-SMF network element corresponding to the session may be, for example, a session policy resource created by the PCF network element for the session resource related to the first I-SMF network element, where the resource is in the resource.
  • the first I-SMF network element includes the address information of the updated PCC rule or the service area information of the first I-SMF network element, and the like; or the information related to the first I-SMF network element may be the session policy corresponding to the session.
  • the information included in the resource such as the address information of the first I-SMF network element receiving the updated PCC rule, the service area information of the first I-SMF network element, and the like, are not specifically limited in this embodiment of the present application.
  • the PCF network element deletes information related to the first I-SMF network element corresponding to the session according to the deletion request.
  • the step S419-S420 provides an optional implementation manner of deleting the information related to the first I-SMF network element corresponding to the session.
  • the PCF network element may also learn that the terminal removes the first I-SMF network element.
  • the service area the information related to the first I-SMF network element corresponding to the session is actively deleted, and the first I-SMF corresponding to the session is deleted after receiving the deletion request from the first I-SMF network element.
  • Information about network elements For example, after receiving the request message 4 from the second I-SMF network element, the terminal can learn that the terminal removes the service area of the first I-SMF network element, so that the information related to the first I-SMF network element corresponding to the session can be deleted. The embodiment of the present application does not specifically limit this.
  • the terminal When the terminal moves out of the service area of the first I-SMF network element, the terminal deletes the information related to the first I-SMF network element corresponding to the session, which can save the storage space of the PCF network element and reduce the waste of resources.
  • the above steps S415-S420 provide a method for acquiring the PCC rule in the first I-SMF network element switching process.
  • the method for obtaining the PCC rule in the insertion process of the second I-SMF network element is similar to the method for obtaining the PCC rule in the above switching process, except that in step S415.
  • the second I-SMF network element obtains the session-related session policy resource identifier from the A-SMF network element, and further, steps S419-S420 may not be performed.
  • steps S415-S418 may be performed, and only steps S419-S420 may be performed; or steps S415-S418 may not be performed.
  • the A-SMF network element notifies the PCF network element terminal to move into the service area of the A-SMF network element, and the PCF network element deletes the information related to the first I-SMF network element corresponding to the session, and hereby uniformly states that the following is no longer Narration.
  • the PCF network element may send the A-SMF network element related PCC to the A-SMF network element due to the change of the terminal location.
  • the rules of the present application are not specifically limited thereto.
  • the PCC rule acquisition method provided by the embodiment of the present invention can greatly reduce the number of application-related PCC rules transmitted between the PCF network element and the SMF network element, thereby saving transmission resources between the PCF network element and the SMF network element.
  • the related technical effect analysis can refer to the PCC rule acquisition system part, and details are not described herein again.
  • the actions of the PCF network element, the first I-SMF network element, the second I-SMF network element, or the A-SMF network element in the foregoing steps S400 to S420 may be performed by the processor in the communication device 300 shown in FIG.
  • the 301 calls the application code stored in the memory 303 to execute, and the embodiment does not impose any limitation.
  • the PCC rule acquisition system shown in FIG. 1 is applied to the 5G network shown in FIG. 2, and the first I-SMF network element is required in the session establishment process, as shown in FIG.
  • Another PCC rule acquisition method provided by the embodiment, the difference between the PCC rule acquisition method and the PCC rule acquisition method shown in FIG. 4 is mainly in the embodiment of the present application, the I-SMF network element (including the first I- The SMF and the second I-SMF do not directly send the request message to the PCF network element, but send the address information (such as the URI) of the I-SMF network element to the PCF network element through the A-SMF network element, and then the PCF.
  • the network element may directly send the PCC rule to the I-SMF according to the address information of the I-SMF network element receiving the PCC rule.
  • the method for obtaining the PCC rule includes the following steps:
  • the first I-SMF network element sends a session establishment request to the A-SMF network element, so that the A-SMF network element receives the session establishment request from the first I-SMF network element.
  • the session establishment request carries the service area information of the first I-SMF network element and the first I-SMF network element receives the address information of the PCC rule 2.
  • the session establishment request may further carry a type of the first I-SMF network element.
  • the type of the first I-SMF network element reference may be made to the embodiment shown in FIG. 4, and details are not described herein again.
  • the A-SMF network element sends a request message 1 to the PCF network element, so that the PCF network element receives the request message 1 from the A-SMF network element.
  • the request message 1 carries the service area information of the first I-SMF network element and the first I-SMF network element receives the address information of the PCC rule 2.
  • the request message 1 in step S601 may further carry the type of the first I-SMF network element, which is not specifically implemented in this embodiment of the present application. limited.
  • the request message 1 may further carry the service area information of the A-SMF network element.
  • the request message 1 can also carry the type of the A-SMF network element.
  • the PCF network element receives the address information of the PCC rule 2 according to the first I-SMF network element, and sends the PCC rule 2 to the first I-SMF network element, so that the first I-SMF network element receives the PCC from the PCF network element. Rule 2.
  • the PCC rule obtaining method may further include the following steps S604-S605:
  • step S604 the same as step S402, related description may refer to the embodiment shown in FIG. 4, and details are not described herein again.
  • the PCF network element sends a PCC rule 1 to the A-SMF network element, so that the A-SMF network element receives the PCC rule 1 from the PCF network element.
  • the foregoing steps S600-S605 show that the A-SMF network element obtains the application-related PCC rule corresponding to the A-SMF network element in the session establishment process, and the first I-SMF network element acquires the application corresponding to the first I-SMF network element.
  • the specific implementation of the relevant PCC rules after the first I-SMF network element and the A-SMF network element have been connected to the PCF network element, if the PCF network element receives the request from the AF network element, or the PCF network After receiving the subscription change indication of the terminal, the UE may need to update the PCC rule.
  • the PCC network element receives the request from the AF network element as an example.
  • the PCC rule acquisition method provided by the embodiment of the present application may further include the following steps. :
  • step S606 the same as step S408, the related description can refer to the embodiment shown in FIG. 4, and details are not described herein again.
  • the PCF network element receives the address information of the PCC rule 2 according to the first I-SMF network element, and sends the updated PCC rule 2 to the first I-SMF network element, so that the first I-SMF network element receives the PCF network element. Updated PCC Rule 2.
  • step S410 in the embodiment shown in FIG. 4, and details are not described herein again.
  • the PCF network element may also be corresponding to the first I-SMF network element.
  • Updated session information for PCC rule updates may further include the following steps:
  • the first I-SMF network element sends the updated session information corresponding to the first I-SMF network element to the A-SMF network element, so that the A-SMF network element receives the first I from the first I-SMF network element.
  • step S411 For a description of the updated session information corresponding to the first I-SMF network element, reference may be made to step S411, and details are not described herein again.
  • the S610 the A-SMF network element sends the updated session information corresponding to the first I-SMF network element to the PCF network element, so that the PCF network element receives the updated corresponding to the first I-SMF network element from the A-SMF network element. Session information.
  • the process of inserting, deleting, or switching the I-SMF network element may also occur.
  • the second I-SMF network element needs to be inserted when the terminal moves out of the service area of the A-SMF network element.
  • the first I-SMF network element needs to be switched when the terminal moves out of the service area of the first I-SMF network element; or, assuming a session The first I-SMF network element already exists.
  • the terminal moves back to the service area of the A-SMF network element from the service area of the first I-SMF network element, the information related to the first I-SMF network element needs to be deleted.
  • the following takes the switching of the I-SMF network element as an example:
  • the PCC rule acquisition method may further include the following steps:
  • the PCC rule obtaining method may further include the following steps:
  • the PCF network element deletes information related to the first I-SMF network element corresponding to the session.
  • the PCF network element can learn that the terminal removes the service area of the first I-SMF network element according to the request message 4, so that the information related to the first I-SMF network element corresponding to the session can be deleted.
  • the information related to the first I-SMF network element corresponding to the session refer to the related description in step S419 in the embodiment shown in FIG. 4, and details are not described herein again.
  • the implementation manner of deleting the information related to the first I-SMF network element corresponding to the session may be similar to that of the S419-S420, except that the first I-SMF network element needs to pass the A-SMF.
  • the network element sends a deletion request to the PCF network element.
  • the terminal When the terminal removes the service area of the first I-SMF network element, the information related to the first I-SMF network element corresponding to the session is deleted, which can save storage space of the PCF network element and reduce waste of resources.
  • steps S614-S618 provide a method for acquiring the PCC rule in the first I-SMF network element switching process.
  • the method for obtaining the PCC rule in the process of inserting the second I-SMF network element is similar to the method for obtaining the PCC rule in the above switching process, but the step of performing the PCC rule is not required.
  • S618 Assuming that the terminal moves back to the service area of the first I-SMF network element from the service area of the first I-SMF network element, step S614-S617 may be omitted, and only step S618 may be performed, where step S618 may be in the A-SMF. After the network element is notified that the PCF network element terminal is moved into the service area of the A-SMF network element, the description is not repeated here.
  • the PCF network element may send the A-SMF network to the A-SMF network element due to the change of the terminal location.
  • the embodiment of the present application does not specifically limit the PCC rule.
  • the PCC rule acquisition method provided by the embodiment of the present invention can greatly reduce the number of application-related PCC rules transmitted between the PCF network element and the SMF network element, thereby saving transmission resources between the PCF network element and the SMF network element.
  • the related technical effect analysis can refer to the PCC rule acquisition system part, and details are not described herein again.
  • the actions of the PCF network element, the first I-SMF network element, the second I-SMF network element, or the A-SMF network element in the foregoing steps S600 to S618 may be performed by the processor in the communication device 300 shown in FIG.
  • the 301 calls the application code stored in the memory 303 to execute, and the embodiment does not impose any limitation.
  • the PCC rule acquisition system shown in FIG. 1 is applied to the 5G network shown in FIG. 2, and the first I-SMF network element is required in the session establishment process, as shown in FIG.
  • Another PCC rule acquisition method provided by the embodiment the difference between the PCC rule acquisition method and the PCC rule acquisition method shown in FIG. 4 is mainly in the embodiment of the present application, the I-SMF network element (including the first I- There is no interface between the SMF and the second I-SMF) and the PCF network element, and all messages exchanged between the two need only pass through the A-SMF network element.
  • the method for obtaining the PCC rule includes the following steps:
  • the S700-S702 is similar to the step S600-S602 except that the session establishment request in the embodiment of the present application and the request information 1 do not need to carry the first I-SMF network element to receive the address information of the PCC rule 2.
  • the session establishment request in the embodiment of the present application and the request information 1 do not need to carry the first I-SMF network element to receive the address information of the PCC rule 2.
  • the PCC rule obtaining method may further include the following step S703:
  • PCC rule obtaining method may further include the following steps:
  • the PCF network element sends a response message 1 to the A-SMF network element, so that the A-SMF network element receives the response message 1 from the PCF network element, where the response message 1 carries the PCC rule 2.
  • the response message 1 may also carry the PCC rule 1, which is not specifically limited in this embodiment of the present application.
  • the response message 1 can also carry the PCC rule 1
  • the response message 1 can also carry the indication information, where the indication information is used to indicate at least one of the PCC rule 1 or the PCC rule 2.
  • the PCC rule 1 may be sent to the A-SMF network element, and the PCC rule 2 is sent to the first I-SMF network element. This application embodiment does not specifically limit this.
  • the A-SMF network element sends the PCC rule 2 to the first I-SMF network element, so that the first I-SMF network element receives the PCC rule 2 from the A-SMF network element.
  • the A-SMF network element may determine, according to the indication information, the PCC rule 2 sent to the first I-SMF network element.
  • the A-SMF network element may be from the PCC rule 1 and the PCC rule 2 according to the service area information of the first I-SMF network element. After determining the PCC rule 2 to be sent to the first I-SMF network element, the PCC rule 2 is sent to the first I-SMF network element.
  • the A-SMF network element may send the PCC rule related to the DNAI of the first I-SMF service to the first I-SMF network element, which is not specifically limited in this embodiment of the present application.
  • the foregoing steps S700-S705 show that the A-SMF network element acquires the application-related PCC rule corresponding to the A-SMF network element in the session establishment process, and the first I-SMF network element acquires the application corresponding to the first I-SMF network element.
  • the specific implementation of the relevant PCC rules after the first I-SMF network element and the A-SMF network element have been connected to the PCF network element, if the PCF network element receives the request from the AF network element, or the PCF network After receiving the subscription change indication of the terminal, the UE may need to update the PCC rule.
  • the PCC network element receives the request from the AF network element as an example.
  • the PCC rule acquisition method provided by the embodiment of the present application may further include the following steps. :
  • the PCC rule acquisition method further includes the following steps S707-S708:
  • the PCF network element sends the updated PCC rule 1 and the updated PCC rule 2 to the A-SMF network element, so that the A-SMF network element receives the updated PCC rule 1 and the updated PCC rule 2 from the PCF network element.
  • the A-SMF network element sends the updated PCC rule 2 to the first I-SMF network element, so that the first I-SMF network element receives the updated PCC rule 2 from the A-SMF network element.
  • the PCF network element sends the updated PCC rule 1 to the A-SMF network element, so that the A-SMF network element receives the update from the PCF network element.
  • PCC rule 1 or, if only PCC rule 2 is updated, the PCF network element sends an updated PCC rule 2 to the A-SMF network element, so that the A-SMF network element receives the updated PCC rule from the PCF network element. 2; further, the A-SMF network element sends the updated PCC rule 2 to the first I-SMF network element, so that the first I-SMF network element receives the updated PCC rule 2 from the A-SMF network element, which is implemented by the present application.
  • This example does not specifically limit this.
  • the PCF network element may also be corresponding to the first I-SMF network element.
  • Updated session information for PCC rule updates may further include the following steps:
  • S709-S711 the same as S609-S611, the related description can refer to the embodiment shown in FIG. 6, and details are not described herein again.
  • the PCF network element sends at least one of the PCC rule 3 and the PCC rule 4 to the A-SMF network element, so that the A-SMF network element receives at least one of the PCC rule 3 and the PCC rule 4 from the PCF network element.
  • the PCC rule obtaining method may further include the following step S713:
  • the A-SMF network element sends the PCC rule 3 to the first I-SMF network element, so that the first I-SMF network element receives the PCC rule 3 from the A-SMF network element.
  • the manner in which the A-SMF network element determines the PCC rule 3 may refer to the manner in which the A-SMF network element determines the PCC rule 2, and details are not described herein again.
  • the process of inserting, deleting, or switching the I-SMF network element may also occur.
  • the second I-SMF network element needs to be inserted when the terminal moves out of the service area of the A-SMF network element.
  • the first I-SMF network element needs to be switched when the terminal moves out of the service area of the first I-SMF network element; or, assuming a session The first I-SMF network element already exists.
  • the terminal moves back to the service area of the A-SMF network element from the service area of the first I-SMF network element, the information related to the first I-SMF network element needs to be deleted.
  • the following takes the switching of the I-SMF network element as an example:
  • the S717 and the PCF network element send the PCC rule 5 to the A-SMF network element, so that the A-SMF network element receives the PCC rule 5 from the PCF network element.
  • the A-SMF network element sends the PCC rule 5 to the first I-SMF network element, so that the first I-SMF network element receives the PCC rule 5 from the A-SMF network element.
  • the PCC rule obtaining method may further include the following steps:
  • steps S714-S719 provide a method for acquiring the PCC rule in the first I-SMF network element switching process.
  • the method for obtaining the PCC rule in the process of inserting the second I-SMF network element is similar to the method for obtaining the PCC rule in the above switching process, but the step of performing the PCC rule is not required.
  • S719. Assume that the terminal moves back to the service area of the first I-SMF network element from the service area of the first I-SMF network element, and steps S714-S718 can be omitted, and only step S719 can be performed. Step S719 can be performed on the A-SMF network. After the UE is notified that the PCF network element terminal is moved into the service area of the A-SMF network element, it is uniformly described here, and details are not described herein.
  • the PCF network element may send the A-SMF network element related PCC to the A-SMF network element due to the change of the terminal location.
  • Rule in this case, in the case where there are both PCC rules related to the I-SMF network element (including the first I-SMF network element or the second I-SMF network element) and the PCC rules related to the A-SMF network element, for the manner of the PCC rules that need to be sent to the I-SMF network element, reference may be made to the foregoing embodiments, and details are not described herein again.
  • the PCC rule acquisition method provided by the embodiment of the present invention can greatly reduce the number of application-related PCC rules transmitted between the PCF network element and the SMF network element, thereby saving transmission resources between the PCF network element and the SMF network element.
  • the actions of the PCF network element, the first I-SMF network element, the second I-SMF network element, or the A-SMF network element in the foregoing steps S700 to S719 may be performed by the processor in the communication device 300 shown in FIG.
  • the 301 calls the application code stored in the memory 303 to execute, and the embodiment does not impose any limitation.
  • the embodiment of the present application discloses a PCC rule acquisition method, including: the first session management network element sends the service area information of the first session management network element, and the service area information of the first session management network element is used. Determining a first PCC rule, where the first PCC rule includes an application-related PCC rule corresponding to the first session management network element; and the first session management network element receives the first PCC rule.
  • the PCC rule obtaining method disclosed in the embodiment of the present application may further include: the first session management network element sends the type of the first session management network element, and the type of the first session management network element is used to determine the first PCC rule.
  • the type of the first session management network element includes an anchor session management network element or an intermediate session management network element.
  • the first session management network element may be an anchor session management network element or an intermediate session management network element.
  • the method for acquiring a PCC rule disclosed in the embodiment of the present application may further include: the first session management network element receives a session-related session policy resource identifier from the second session management network element, where the session policy resource identifier is used to locate the session. The related session policy resource; the first session management network element sends the session policy resource identifier to the policy control function network element.
  • the PCC rule obtaining method disclosed in the embodiment of the present application may further include: the first session management network element sends, to the policy control function network element, the SUPI of the terminal served by the first session management network element and the session corresponding to the terminal.
  • the session identifier wherein the SUPI and the session identifier are used to associate the session-related session policy resource corresponding to the first session management network element with the session-related session policy resource corresponding to the second session management network element.
  • the PCC rule obtaining method disclosed in the embodiment of the present application may further include: the first session management network element receives the information of the policy control function network element from the second session management network element, and the information of the policy control function network element is used. The policy control function network element is selected in the first session management network element.
  • the PCC rule acquisition method disclosed in the embodiment of the present application may further include: the first session management network The meta-binding support function network element sends a query message, where the query message carries the session identifier corresponding to the session of the terminal served by the first session management network element, and the session identifier is used to select the policy control function network element; the first session management network element receives The query response from the binding support function network element, and the query response carries information of the policy control function network element.
  • the first session management network element is an intermediate session management network element; correspondingly, the first session management network element sends the service area information of the first session management network element, including: the first session management network element is the second The session management network element sends the service area information of the first session management network element, and the first session management network element receives the address information of the first PCC rule, and the second session management network element sends the first session management network to the policy control function network element.
  • the first session management network element is an anchor session management network element, and the first session management network element receives the first PCC rule, including The first session management network element receives the first PCC rule from the policy control function network element.
  • the first session management network element for example, refer to the first I-SMF network element, the second I-SMF network element, or the A-SMF network element in FIG. 4, FIG. 6, or FIG.
  • the operation and the above related text descriptions will not be repeated here.
  • the embodiment of the present application further discloses a method for detecting a service quality, comprising: a policy control function network element receiving service area information of a first session management network element; and a policy control function network element according to the first session management network element
  • the service area information determines a first PCC rule, where the first PCC rule includes an application-related PCC rule corresponding to the first session management network element; and the policy control function network element sends the first PCC rule.
  • the PCC rule obtaining method disclosed in the embodiment of the present application may further include: the policy control function network element receives the type of the first session management network element, where the type of the first session management network element includes an anchor session management network. The element or the intermediate session management network element; correspondingly, the policy control function network element determines the first PCC rule according to the service area information of the first session management network element, including: the policy control function network element manages the network element service according to the first session The area information and the type of the first session management network element determine the first PCC rule.
  • the PCC rule obtaining method disclosed in the embodiment of the present application may further include: the policy control function network element sends a session-related session policy resource identifier to the second session management network element, where the second session management network element is first.
  • the session management network element sends the session policy resource identifier.
  • the policy control function network element receives the session policy resource identifier from the first session management network element, where the session policy resource identifier is used to locate the session-related session policy resource.
  • the PCC rule obtaining method disclosed in the embodiment of the present application may further include: the policy control function network element receives the subscription permanent identifier SUPI and the terminal of the terminal served by the first session management network element from the first session management network element.
  • the PCC rule obtaining method disclosed in the embodiment of the present application may further include: the policy control function network element receiving the session identifier corresponding to the session of the terminal served by the first session management network element of the first session management network element; The policy control function network element registers the session identifier to the binding support function network element.
  • the first session management network element is an intermediate session management network element.
  • the PCC rule acquisition method disclosed in the embodiment of the present application may further include: the policy control function network element receives the updated session information corresponding to the first session management network element.
  • the policy control function network element determines at least one of the third PCC rule and the fourth PCC rule according to the updated session information, where the third PCC rule includes a local session policy corresponding to the first session management network element, and the fourth PCC rule
  • the operation of the network element of the policy control function may refer to the operation of the PCF network element in FIG. 4, FIG. 6 or FIG. 7 and the related text description, and details are not described herein again.
  • the first session management network element or the policy control function network element includes a hardware structure and/or a software module corresponding to each function.
  • the present application can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.
  • the embodiment of the present application may perform the function module division on the first session management network element or the policy control function network element according to the foregoing method example.
  • each function module may be divided according to each function, or two or more functions may be used.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the module in the embodiment of the present application is schematic, and is only a logical function division, and the actual implementation may have another division manner.
  • FIG. 8 shows a schematic structural diagram of a first session management network element 80.
  • the first session management network element 80 includes a sending module 801 and a receiving module 802.
  • the sending module 801 is configured to send the service area information of the first session management network element 80, where the service area information of the first session management network element 80 is used to determine a first PCC rule, where the first PCC rule includes the first session.
  • the application module 80 is associated with the application-related PCC rule, and the receiving module 802 is configured to receive the first PCC rule.
  • the sending module 801 is further configured to send a type of the first session management network element 80, where the type of the first session management network element 80 is used to determine a first PCC rule, where the type of the first session management network element 80 Including an anchor session management network element or an intermediate session management network element.
  • the receiving module 802 is further configured to receive a session-related session policy resource identifier from the second session management network element, where the session policy resource identifier is used to locate the session-related session policy resource, and the sending module 801 is further configured to The policy control function network element sends the session policy resource identifier.
  • the sending module 801 is further configured to send, to the policy control function network element, the SUPI of the terminal served by the first session management network element 80 and the session identifier corresponding to the session of the terminal; wherein the SUPI and the session identifier are used for The session-related session policy resource corresponding to the session management network element 80 is associated with the session-related session policy resource corresponding to the second session management network element.
  • the receiving module 802 is further configured to receive information about a policy control function network element from the second session management network element, where the information of the policy control function network element is used by the first session management network element 80 to select a policy control function network element. .
  • the sending module 801 is further configured to send a query message to the binding support function network element, where the query message carries the session identifier corresponding to the session of the terminal served by the first session management network element 80, and the session identifier is used to select a policy control.
  • the function network element is further configured to: receive a query response from the network element of the binding support function, and query the information of the network element carrying the policy control function.
  • the first session management network element 80 is an intermediate session management network element.
  • the sending module 801 is configured to send the service area information of the first session management network element 80, including: used to manage the network element to the second session. Sending the service area information of the first session management network element 80 and the first session management network element 80 receiving the address information of the first PCC rule, and sending, by the second session management network element, the first session management network element 80 to the policy control function network element.
  • the service area information and the first session management network element 80 receive the address information of the first PCC rule, wherein the second session management network element is an anchor session management network element, and the receiving module 802 is configured to receive the first PCC rule, including: Used to receive the first PCC rule from the network element of the policy control function.
  • the first session management network element 80 is presented in a form that divides each functional module in an integrated manner.
  • a “module” herein may refer to a particular ASIC, circuitry, processor and memory that executes one or more software or firmware programs, integrated logic circuitry, and/or other devices that provide the functionality described above.
  • the first session management network element 80 can take the form shown in FIG.
  • the processor 301 in FIG. 3 can execute the instruction by calling the computer stored in the memory 303, so that the first session management network element 80 executes the PCC rule acquisition method in the foregoing method embodiment.
  • the function/implementation process of the receiving module 802 and the sending module 801 in FIG. 8 can be implemented by the processor 301 in FIG. 3 calling a computer executing instruction stored in the memory 303.
  • the function/implementation process of the receiving module 802 and the transmitting module 801 in FIG. 8 can be implemented by the communication interface 304 in FIG.
  • the first session management network element provided in this embodiment can perform the above-mentioned PCC rule acquisition method. Therefore, the technical effects of the method can be referred to the foregoing method embodiments, and details are not described herein.
  • the embodiment of the present application further provides a chip system, where the chip system includes a processor, configured to support the first session management network element to implement the foregoing PCC rule obtaining method, for example, acquiring a service area of the first session management network element. information.
  • the chip system also includes a memory. The memory is used to save necessary program instructions and data of the first session management network element. Of course, the memory may not be in the chip system.
  • the chip system may be composed of a chip, and may also include a chip and other discrete devices. This embodiment of the present application does not specifically limit this.
  • FIG. 9 shows a schematic structural diagram of a policy control function network element 90.
  • the policy control function network element 90 includes a transceiver module 901 and a processing module 902.
  • the transceiver module 901 is configured to receive the service area information of the first session management network element, and the processing module 902 is configured to determine, according to the service area information of the first session management network element, the first PCC rule, where the first PCC rule The application-related PCC rule corresponding to the first session management network element is included; the transceiver module 901 is further configured to send the first PCC rule.
  • the transceiver module 901 is further configured to receive a type of the first session management network element, where the type of the first session management network element includes an anchor session management network element or an intermediate session management network element; correspondingly, the processing module The 902 is specifically configured to: determine, according to the service area information of the first session management network element and the type of the first session management network element, the first PCC rule.
  • the transceiver module 901 is further configured to send a session-related session policy resource identifier to the second session management network element, where the second session management network element sends the session policy resource identifier to the first session management network element, and the transceiver module 901
  • the session policy resource identifier is also used to receive the session policy resource identifier from the first session management network element, where the session policy resource identifier is used to locate the session-related session policy resource.
  • the transceiver module 901 is further configured to receive the subscription permanent identifier SUPI of the terminal served by the first session management network element of the first session management network element and the session identifier corresponding to the session of the terminal; wherein, the SUPI and the session identifier
  • the session policy resource related to the session corresponding to the first session management network element is associated with the session policy resource related to the session corresponding to the second session management network element.
  • the transceiver module 901 is further configured to receive the session identifier corresponding to the session of the terminal served by the first session management network element of the first session management network element, and the processing module 902 is further configured to register the session identifier to the binding Support function network elements.
  • the first session management network element is an intermediate session management network element; the transceiver module 901 is further configured to receive updated session information corresponding to the first session management network element; and the processing module 902 is further configured to: according to the updated session information. Determining at least one of a third PCC rule and a fourth PCC rule, where the third PCC rule includes a local session policy corresponding to the first session management network element, and the fourth PCC rule includes a local session corresponding to the second session management network element The policy, wherein the second session management network element is an anchor session management network element, and the transceiver module 901 is further configured to send at least one of the third PCC rule and the fourth PCC rule.
  • the policy control function network element 90 is presented in a form that divides each functional module in an integrated manner.
  • a “module” herein may refer to a particular ASIC, circuitry, processor and memory that executes one or more software or firmware programs, integrated logic circuitry, and/or other devices that provide the functionality described above.
  • the policy control function network element 90 can take the form shown in FIG.
  • the processor 301 in FIG. 3 can execute the instruction by calling the computer stored in the memory 303, so that the policy control function network element 90 executes the PCC rule acquisition method in the foregoing method embodiment.
  • the function/implementation process of the transceiver module 901 and the processing module 902 in FIG. 9 can be implemented by the processor 301 in FIG. 3 calling a computer execution instruction stored in the memory 303.
  • the function/implementation process of the processing module 902 in FIG. 9 can be implemented by the processor 301 in FIG. 3 calling the computer execution instruction stored in the memory 303, and the function/implementation process of the transceiver module 901 in FIG.
  • the communication interface 304 in 3 is implemented.
  • the policy control function network element provided by this embodiment can perform the above-mentioned PCC rule acquisition method. Therefore, the technical effects that can be obtained can be referred to the foregoing method embodiments, and details are not described herein again.
  • the embodiment of the present application further provides a chip system, where the chip system includes a processor, and is configured to support a policy control function network element to implement the foregoing PCC rule obtaining method, for example, according to the service area information of the first session management network element. , determine the first PCC rule.
  • the chip system also includes a memory.
  • the memory is used to store program instructions and data necessary for the network element of the policy control function.
  • the memory may not be in the chip system.
  • the chip system may be composed of a chip, and may also include a chip and other discrete devices. This embodiment of the present application does not specifically limit this.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • a software program it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transmission to another website site, computer, server or data center via wired (eg coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device that includes one or more servers, data centers, etc. that can be integrated with the media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)) or the like.
  • a magnetic medium eg, a floppy disk, a hard disk, a magnetic tape
  • an optical medium eg, a DVD
  • a semiconductor medium such as a solid state disk (SSD)

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Abstract

本申请实施例提供PCC规则获取方法、装置及***，可以在SMF网元按照行政区域划分的情况下，使得SMF网元获取到该SMF网元对应的应用相关的PCC规则。方法包括：第一会话管理网元发送第一会话管理网元的服务区域信息，该第一会话管理网元的服务区域信息用于确定第一PCC规则，其中，该第一PCC规则包括该第一会话管理网元对应的应用相关的PCC规则；第一会话管理网元接收该第一PCC规则。

Description

策略和计费控制规则获取方法、装置及***
本申请要求于2018年3月30日提交中国国家知识产权局、申请号为201810276554.2、发明名称为“策略和计费控制规则获取方法、装置及***”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及策略和计费控制(policy and charging control，PCC)规则获取方法、装置及***。
背景技术
在现有的第五代(5rd generation，5G)网络架构中，一个分组数据单元(packet data unit，PDU)会话由一个会话管理功能(session management function，SMF)网元管理。这意味着，在现有的5G网络架构中，当终端处于非漫游状态时，终端的PDU会话的用户面路径中的所有用户面功能(user plane function，UPF)网元均由一个SMF网元控制。这样，当SMF网元从策略控制功能(policy control function，PCF)网元获取PCC规则时，PCF网元需要将整个公共陆地移动网络(public land mobile network，PLMN)中所有应用相关的PCC规则全部发送给该SMF网元。
然而，上述5G网络架构与运营商的实际部署并不一致，在运营商的实际部署中，考虑到跨区域配置的复杂性以及运营商希望隐藏网络拓扑的需求，通常SMF网元是按区域进行划分的。也就是说，在运营商的实际部署中，一个SMF网元只能服务一个特定的区域。此时，若SMF网元仍旧按照现有的PCC规则的获取方式获取整个PLMN中所有应用相关的PCC规则，将导致PCF网元与SMF网元之间传输资源的大量浪费。
因此，在SMF网元按照行政区域划分的情况下，SMF网元如何获取该SMF网元对应的应用相关的PCC规则，是目前亟待解决的问题。
发明内容
本申请实施例提供PCC规则获取方法、装置及***，可以在SMF网元按照行政区域划分的情况下，使得SMF网元获取到该SMF网元对应的应用相关的PCC规则。
为达到上述目的，本申请的实施例采用如下技术方案：
第一方面，提供一种策略和计费控制PCC规则获取方法，该方法包括：第一会话管理网元发送第一会话管理网元的服务区域信息，该第一会话管理网元的服务区域信息用于确定第一PCC规则，其中，该第一PCC规则包括该第一会话管理网元对应的应用相关的PCC规则；第一会话管理网元接收该第一PCC规则。不像现有技术一样，会话管理网元在获取PCC规则时需要获取整个PLMN中所有应用相关的PCC规则。基于本申请实施例提供的PCC规则获取方法，可以在会话管理网元按照行政区域划分的情况下，使得会话管理网元可以获取该会话管理网元对应的应用相关的PCC规则，因此相对于现有技术，可以大大减少策略控制功能网元与会话管理网元之间传输的应用相关的PCC规则的数量，从而可以节省策略控制功能网元与会话管理网元之间的传输资源。
在一种可能的设计中，本申请实施例提供的PCC规则获取方法还可以包括：第一会话管理网元发送该第一会话管理网元的类型，该第一会话管理网元的类型用于确定该第一PCC规则，其中，该第一会话管理网元的类型包括锚点会话管理网元或者中间会话管理网元。也就是说，在确定第一会话管理网元对应的应用相关的PCC规则时，还可以包括第一会话管理网元的类型，比如，在第一会话管理网元的类型包括锚点会话管理网元的情况下，该第一PCC规则可以包括流量导向策略，该流量导向策略用于标识数据如何从与数据网络连接的用户面功能网元传输到该数据网络；在该第一会话管理网元的类型包括中间会话管理网元的情况下，该第一PCC规则可以包括上行分流策略，该上行分流策略用于表征数据如何进行本地分流。
在一种可能的设计中，第一会话管理网元为锚点会话管理网元或者中间会话管理网元；相应的，第一会话管理网元发送该第一会话管理网元的服务区域信息，包括：第一会话管理网元向策略控制功能网元发送该第一会话管理网元的服务区域信息；第一会话管理网元接收该第一PCC规则，包括：第一会话管理网元接收来自该策略控制功能网元的该第一PCC规则。也就是说，本申请实施例中，第一会话管理网元可以和策略控制功能网元直接通信。
在一种可能的设计中，本申请实施例提供的PCC规则获取方法还可以包括：第一会话管理网元接收来自第二会话管理网元的会话相关的会话策略资源标识，该会话策略资源标识用于定位该会话相关的会话策略资源；第一会话管理网元向策略控制功能网元发送该会话策略资源标识。基于该方案，策略控制功能网元可以定位出该会话相关的会话策略资源。
在一种可能的设计中，本申请实施例提供的PCC规则获取方法还可以包括：第一会话管理网元向策略控制功能网元发送该第一会话管理网元所服务的终端的签约永久标识SUPI以及该终端的会话对应的会话标识；其中，该SUPI和该会话标识用于将该第一会话管理网元对应的该会话相关的会话策略资源与第二会话管理网元对应的该会话相关的会话策略资源相关联。也就是说，对于终端的会话，可以分别为第一会话管理网元和第二会话管理网元创建一个会话相关的会话策略资源，进而，当第一会话管理网元向策略控制功能网元发送该终端的SUPI以及该终端的会话对应的会话标识时，或者，当第二会话管理网元向策略控制功能网元发送该终端的SUPI以及该终端的会话对应的会话标识时，策略控制功能网元可以将第一会话管理网元对应的会话相关的会话策略资源与第二会话管理网元对应的会话相关的会话策略资源相关联，进而可以确定出会话相关的会话策略资源。
在一种可能的设计中，本申请实施例提供的PCC规则获取方法还可以包括：第一会话管理网元接收来自第二会话管理网元的该策略控制功能网元的信息，该策略控制功能网元的信息用于该第一会话管理网元选择该策略控制功能网元。基于该方案，对于同一个终端的会话，可以使得第一会话管理网元和第二会话管理网元选择到相同的策略控制功能网元。
在一种可能的设计中，在第一会话管理网元向策略控制功能网元发送该第一会话管理网元的服务区域信息之前，本申请实施例提供的PCC规则获取方法还可以包括：第一会话管理网元向绑定支持功能网元发送查询消息，该查询消息携带该第一会话管理网元所服务的终端的会话对应的会话标识，该会话标识用于选择该策略控制功能网元；第一会话管理网元接收来自绑定支持功能网元的查询响应，该查询响应携带该策略控制功能网元的信息。基于该方案，对于同一个终端的会话，可以使得第一会话管理网元和第二会话管理网元选择到相同的策略控制功能网元。
在一种可能的设计中，第一会话管理网元为中间会话管理网元；相应的，第一会话管理网元发送该第一会话管理网元的服务区域信息，包括：第一会话管理网元向第二会话管理网 元发送该第一会话管理网元的服务区域信息以及该第一会话管理网元接收该第一PCC规则的地址信息，由该第二会话管理网元向策略控制功能网元发送该第一会话管理网元的服务区域信息以及该第一会话管理网元接收该第一PCC规则的地址信息，其中，该第二会话管理网元为锚点会话管理网元；第一会话管理网元接收该第一PCC规则，包括：第一会话管理网元接收来自该策略控制功能网元的该第一PCC规则。也就是说，本申请实施例中的第一会话管理网元与策略控制功能网元可以通过第二会话管理网元进行通信，也可以直接通信；本申请实施例中的第二会话管理网元与策略控制功能网元可以直接通信，本申请实施例对此不作具体限定。
在一种可能的设计中，第一会话管理网元为中间会话管理网元；相应的，第一会话管理网元发送该第一会话管理网元的服务区域信息，包括：第一会话管理网元向第二会话管理网元发送该第一会话管理网元的服务区域信息，其中，该第二会话管理网元为锚点会话管理网元；第一会话管理网元接收该第一PCC规则，包括：第一会话管理网元接收来自该第二会话管理网元的该第一PCC规则。也就是说，本申请实施例中的第一会话管理网元与策略控制功能网元可以通过第二会话管理网元进行通信；本申请实施例中的第二会话管理网元与策略控制功能网元可以直接通信，本申请实施例对此不作具体限定。
在一种可能的设计中，第一会话管理网元为中间会话管理网元；本申请实施例提供的PCC规则获取方法还可以包括：第一会话管理网元发送该第一会话管理网元对应的更新的会话信息，该更新的会话信息用于确定第三PCC规则和第四PCC规则中的至少一个，其中，该第三PCC规则包括该第一会话管理网元对应的本地会话策略，该第四PCC规则包括第二会话管理网元对应的本地会话策略，其中，该第二会话管理网元为锚点会话管理网元。基于该方案，可以在中间会话管理网元对应的会话发生更新的情况下，使得中间会话管理网元和锚点会话管理网元均可能获取对应的本地会话策略。
在一种可能的设计中，第一会话管理网元为锚点会话管理网元；相应的，该第一会话管理网元发送该第一会话管理网元的服务区域信息，包括：第一会话管理网元向策略控制功能网元发送第一请求消息，该第一请求消息携带该第一会话管理网元的服务区域信息；第一会话管理网元接收该第一PCC规则，包括：第一会话管理网元接收来自该策略控制功能网元的该第一PCC规则。也就是说，本申请实施例中的第一会话管理网元与策略控制功能网元可以直接通信。
可选的，本申请实施例提供的PCC规则获取方法还可以包括：第一会话管理网元接收来自第二会话管理网元的该第二会话管理网元的服务区域信息以及该第二会话管理网元接收第二PCC规则的地址信息，该第二会话管理网元的服务区域信息用于确定第二PCC规则，该第二PCC规则包括该第二会话管理网元对应的应用相关的PCC规则，其中，该第二会话管理网元为中间会话管理网元；相应的，该第一请求消息还携带该第二会话管理网元的服务区域信息以及该第二会话管理网元接收第二PCC规则的地址信息。基于本申请实施例提供的PCC规则获取方法，可以在会话管理网元按照行政区域划分的情况下，不仅为终端当前所在区域服务的中间会话管理网元可以获取对应的应用相关的PCC规则，而且锚点会话管理网元也可以获取对应的应用相关的PCC规则。
在一种可能的设计中，第一会话管理网元为锚点会话管理网元；第一会话管理网元发送该第一会话管理网元的服务区域信息，包括：第一会话管理网元向策略控制功能网元发送第二请求消息，该第二请求消息携带该第一会话管理网元的服务区域信息；第一会话管理网元 接收该第一PCC规则，包括：第一会话管理网元接收来自该策略控制功能网元的响应消息，该响应消息携带该第一PCC规则。也就是说，本申请实施例中的第一会话管理网元与策略控制功能网元可以直接通信。
可选的，本申请实施例提供的PCC规则获取方法还可以包括：第一会话管理网元接收来自第二会话管理网元的该第二会话管理网元的服务区域信息，该第二会话管理网元的服务区域信息用于确定第二PCC规则，该第二PCC规则包括该第二会话管理网元对应的应用相关的PCC规则，其中，该第二会话管理网元为中间会话管理网元；相应的，该第二请求消息还携带该第二会话管理网元的服务区域信息；该响应消息还携带该第二PCC规则；相应的，本申请实施例提供的PCC规则获取方法还可以包括：第一会话管理网元向该第二会话管理网元发送该第二PCC规则。基于本申请实施例提供的PCC规则获取方法，可以在会话管理网元按照行政区域划分的情况下，不仅为终端当前所在区域服务的中间会话管理网元可以获取对应的应用相关的PCC规则，而且锚点会话管理网元也可以获取对应的应用相关的PCC规则。
可选的，上述响应消息中还携带指示信息，该指示信息用于指示该第一PCC规则或该第二PCC规则中的至少一个。这样第一会话管理网元可以根据该指示信息从第一PCC规则和该第二PCC规则中确定该第二PCC规则。
或者，可选的，本申请实施例提供的PCC规则获取方法还可以包括：第一会话管理网元根据该第二会话管理网元的服务区域信息，从该第一PCC规则和该第二PCC规则中确定该第二PCC规则。
第二方面，提供一种策略和计费控制PCC规则获取方法，该方法包括：策略控制功能网元接收第一会话管理网元的服务区域信息；策略控制功能网元根据该第一会话管理网元的服务区域信息，确定第一PCC规则，其中，该第一PCC规则包括该第一会话管理网元对应的应用相关的PCC规则；策略控制功能网元发送该第一PCC规则。基于本申请实施例提供的PCC规则获取方法，可以在会话管理网元按照行政区域划分的情况下，使得会话管理网元可以获取该会话管理网元对应的应用相关的PCC规则，因此相对于现有技术，可以大大减少策略控制功能网元与会话管理网元之间传输的应用相关的PCC规则的数量，从而可以节省策略控制功能网元与会话管理网元之间的传输资源。
在一种可能的设计中，第一会话管理网元的服务区域信息包括该第一会话管理网元所服务的DNAI列表；策略控制功能网元根据该第一会话管理网元的服务区域信息，确定第一PCC规则，包括：策略控制功能网元根据该第一会话管理网元所服务的DNAI列表，确定该第一PCC规则。基于该方案，策略控制功能网元可以确定出第一PCC规则。
在一种可能的设计中，第一会话管理网元的服务区域信息包括该第一会话管理网元所服务的区域的标识信息；策略控制功能网元根据该第一会话管理网元的服务区域信息，确定第一PCC规则，包括：策略控制功能网元根据该第一会话管理网元所服务的区域的标识信息，确定该第一会话管理网元所服务的DNAI列表；策略控制功能网元根据该第一会话管理网元所服务的DNAI列表，确定该第一PCC规则。基于该方案，策略控制功能网元可以确定出第一PCC规则。
在一种可能的设计中，该第一会话管理网元的服务区域信息包括该第一会话管理网元所服务的终端的位置信息；策略控制功能网元根据该第一会话管理网元的服务区域信息，确定第一PCC规则，包括：策略控制功能网元根据该第一会话管理网元所服务的终端的位置信息，确定该第一会话管理网元所服务的区域的标识信息；策略控制功能网元根据该第一会话管理 网元所服务的区域的标识信息，确定该第一会话管理网元所服务的DNAI列表；策略控制功能网元根据该第一会话管理网元所服务的DNAI列表，确定该第一PCC规则。基于该方案，策略控制功能网元可以确定出第一PCC规则。
在一种可能的设计中，本申请实施例提供的PCC规则获取方法还可以包括：策略控制功能网元接收该第一会话管理网元的类型，其中，该第一会话管理网元的类型包括锚点会话管理网元或者中间会话管理网元；相应的，该策略控制功能网元根据该第一会话管理网元的服务区域信息，确定第一PCC规则，包括：策略控制功能网元根据该第一会话管理网元的服务区域信息和该第一会话管理网元的类型，确定该第一PCC规则。也就是说，在确定第一会话管理网元对应的应用相关的PCC规则时，还可以包括第一会话管理网元的类型，比如，在第一会话管理网元的类型包括锚点会话管理网元的情况下，该第一PCC规则可以包括流量导向策略，该流量导向策略用于标识数据如何从与数据网络连接的用户面功能网元传输到该数据网络；在该第一会话管理网元的类型包括中间会话管理网元的情况下，该第一PCC规则可以包括上行分流策略，该上行分流策略用于表征数据如何进行本地分流。
在一种可能的设计中，本申请实施例提供的PCC规则获取方法还可以包括：策略控制功能网元向第二会话管理网元发送会话相关的会话策略资源标识，由该第二会话管理网元向该第一会话管理网元发送该会话策略资源标识；策略控制功能网元接收来自该第一会话管理网元的该会话策略资源标识，其中，该会话策略资源标识用于定位该会话相关的会话策略资源。基于该方案，策略控制功能网元可以定位出该会话相关的会话策略资源。
在一种可能的设计中，本申请实施例提供的PCC规则获取方法还可以包括：策略控制功能网元接收来自该第一会话管理网元的该第一会话管理网元所服务的终端的签约永久标识SUPI以及该终端的会话对应的会话标识；其中，该SUPI和该会话标识用于将该第一会话管理网元对应的该会话相关的会话策略资源与第二会话管理网元对应的该会话相关的会话策略资源相关联。也就是说，对于终端的会话，可以分别为第一会话管理网元和第二会话管理网元创建一个会话相关的会话策略资源，进而，当第一会话管理网元向策略控制功能网元发送该终端的SUPI以及该终端的会话对应的会话标识时，或者，当第二会话管理网元向策略控制功能网元发送该终端的SUPI以及该终端的会话对应的会话标识时，策略控制功能网元可以将第一会话管理网元对应的会话相关的会话策略资源与第二会话管理网元对应的会话相关的会话策略资源相关联，进而可以确定出会话相关的会话策略资源。
在一种可能的设计中，本申请实施例提供的PCC规则获取方法还可以包括：策略控制功能网元接收来自该第一会话管理网元的该第一会话管理网元所服务的终端的会话对应的会话标识；策略控制功能网元将该会话标识注册到绑定支持功能网元。基于该方案，对于同一个终端的会话，可以使得第一会话管理网元和第二会话管理网元选择到相同的策略控制功能网元。
在一种可能的设计中，第一会话管理网元为中间会话管理网元；相应的，策略控制功能网元接收该第一会话管理网元的服务区域信息，包括：策略控制功能网元接收来自第二会话管理网元的第一请求消息，该第一请求消息携带该第一会话管理网元的服务区域信息以及该第一会话管理网元接收该第一PCC规则的地址信息，其中，该第二会话管理网元为锚点会话管理网元；相应的，该策略控制功能网元发送该第一PCC规则，包括：策略控制功能网元根据该第一会话管理网元接收该第一PCC规则的地址信息，向该第一会话管理网元发送该第一PCC规则。也就是说，本申请实施例中的第一会话管理网元与策略控制功能网元可以通过第 二会话管理网元进行通信，也可以直接通信；本申请实施例中的第二会话管理网元与策略控制功能网元可以直接通信，本申请实施例对此不作具体限定。
可选的，该第一请求消息还携带该第二会话管理网元的服务区域信息；本申请实施例提供的PCC规则获取方法还可以包括：策略控制功能网元根据该第二会话管理网元的服务区域信息，确定第二PCC规则，该第二PCC规则包括该第二会话管理网元对应的应用相关的PCC规则；策略控制功能网元向该第二会话管理网元发送该第二PCC规则。基于本申请实施例提供的PCC规则获取方法，可以在会话管理网元按照行政区域划分的情况下，不仅为终端当前所在区域服务的中间会话管理网元可以获取对应的应用相关的PCC规则，而且锚点会话管理网元也可以获取对应的应用相关的PCC规则。
在一种可能的设计中，第一会话管理网元为中间会话管理网元；本申请实施例提供的PCC规则获取方法还可以包括：策略控制功能网元接收该第一会话管理网元对应的更新的会话信息；策略控制功能网元根据该更新的会话信息，确定第三PCC规则和第四PCC规则中的至少一个，其中，该第三PCC规则包括该第一会话管理网元对应的本地会话策略，该第四PCC规则包括第二会话管理网元对应的本地会话策略，其中，该第二会话管理网元为锚点会话管理网元；策略控制功能网元发送该第三PCC规则和该第四PCC规则中的至少一个。基于该方案，可以在中间会话管理网元对应的会话发生更新的情况下，使得中间会话管理网元和锚点会话管理网元均可能获取对应的本地会话策略。
在一种可能的设计中，第一会话管理网元为锚点会话管理网元；相应的，该策略控制功能网元接收该第一会话管理网元的服务区域信息，包括：策略控制功能网元接收来自该第一会话管理网元的第一请求消息，该第一请求消息携带该第一会话管理网元的服务区域信息；策略控制功能网元发送该第一PCC规则，包括：策略控制功能网元向该第一会话管理网元发送该第一PCC规则。也就是说，本申请实施例中的第一会话管理网元与策略控制功能网元可以直接通信。
可选的，该第一请求消息还携带第二会话管理网元的服务区域信息以及该第二会话管理网元接收第二PCC规则的地址信息，其中，该第二会话管理网元为中间会话管理网元，该第二PCC规则包括该第二会话管理网元对应的应用相关的PCC规则；本申请实施例提供的PCC规则获取方法还可以包括：策略控制功能网元根据该第二会话管理网元的服务区域信息，确定第二PCC规则；策略控制功能网元根据该第二会话管理网元接收第二PCC规则的地址信息，向该第二会话管理网元发送该第二PCC规则。基于本申请实施例提供的PCC规则获取方法，可以在会话管理网元按照行政区域划分的情况下，不仅为终端当前所在区域服务的中间会话管理网元可以获取对应的应用相关的PCC规则，而且锚点会话管理网元也可以获取对应的应用相关的PCC规则。
在一种可能的设计中，该第一会话管理网元为锚点会话管理网元；该策略控制功能网元接收该第一会话管理网元的服务区域信息，包括：策略控制功能网元接收来自该第一会话管理网元的第二请求消息，该第二请求消息携带该第一会话管理网元的服务区域信息；相应的，策略控制功能网元发送该第一PCC规则，包括：策略控制功能网元向第一会话管理网元发送响应消息，该响应消息携带该第一PCC规则。也就是说，本申请实施例中的第一会话管理网元与策略控制功能网元可以直接通信。
可选的，该第二请求消息还携带第二会话管理网元的服务区域信息，其中，该第二会话管理网元为中间会话管理网元；本申请实施例提供的PCC规则获取方法还可以包括：策略控 制功能网元根据该第二会话管理网元的服务区域信息，确定第二PCC规则，该第二PCC规则包括该第二会话管理网元对应的应用相关的PCC规则；相应的，该响应消息还携带该第二PCC规则，由第二会话管理网元向第一会话管理网元发送该第二PCC规则。基于本申请实施例提供的PCC规则获取方法，可以在会话管理网元按照行政区域划分的情况下，不仅为终端当前所在区域服务的中间会话管理网元可以获取对应的应用相关的PCC规则，而且锚点会话管理网元也可以获取对应的应用相关的PCC规则。
可选的，上述响应消息中还携带指示信息，该指示信息用于指示该第一PCC规则或该第二PCC规则中的至少一个。这样第一会话管理网元可以根据该指示信息从第一PCC规则和该第二PCC规则中确定该第二PCC规则。
结合上述第一方面或第二方面中任一种可能的设计，本申请实施例中的服务区域信息可以包括所服务的数据网络接入标识DNAI列表、或者所服务的区域的标识信息、或者所服务的终端的位置信息。
第三方面，提供了一种第一会话管理网元，该第一会话管理网元具有实现上述第一方面任一项所述的方法的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
第四方面，提供了一种第一会话管理网元，包括：处理器和存储器；该存储器用于存储计算机执行指令，当该第一会话管理网元运行时，该处理器执行该存储器存储的该计算机执行指令，以使该第一会话管理网元执行如上述第一方面中任一项所述的PCC规则获取方法。
第五方面，提供了一种第一会话管理网元，包括：处理器；所述处理器用于与存储器耦合，并读取存储器中的指令之后，根据所述指令执行如上述第一方面中任一项所述的PCC规则获取方法。
第六方面，提供了一种计算机可读存储介质，该计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机可以执行上述第一方面中任一项所述的PCC规则获取方法。
第七方面，提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机可以执行上述第一方面中任一项所述的PCC规则获取方法。
第八方面，提供了一种芯片***，该芯片***包括处理器，用于支持第一会话管理网元实现上述第一方面中所涉及的功能，例如获取第一会话管理网元的服务区域信息。在一种可能的设计中，该芯片***还包括存储器，该存储器，用于保存第一会话管理网元必要的程序指令和数据。该芯片***，可以由芯片构成，也可以包含芯片和其他分立器件。
其中，第三方面至第八方面中任一种设计方式所带来的技术效果可参见第一方面中不同设计方式所带来的技术效果，此处不再赘述。
第九方面，提供了一种策略控制功能网元，该策略控制功能网元具有实现上述第二方面任一项所述的方法的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
第十方面，提供了一种策略控制功能网元，包括：处理器和存储器；该存储器用于存储计算机执行指令，当该策略控制功能网元运行时，该处理器执行该存储器存储的该计算机执行指令，以使该策略控制功能网元执行如上述第二方面中任一项所述的PCC规则获取方法。
第十一方面，提供了一种策略控制功能网元，包括：处理器；所述处理器用于与存储器耦合，并读取存储器中的指令之后，根据所述指令执行如上述第二方面中任一项所述的PCC规则获取方法。
第十二方面，提供了一种计算机可读存储介质，该计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机可以执行上述第二方面中任一项所述的PCC规则获取方法。
第十三方面，提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机可以执行上述第二方面中任一项所述的PCC规则获取方法。
第十四方面，提供了一种芯片***，该芯片***包括处理器，用于支持策略控制功能网元实现上述第二方面中所涉及的功能，例如根据第一会话管理网元的服务区域信息，确定第一PCC规则。在一种可能的设计中，该芯片***还包括存储器，该存储器，用于保存策略控制功能网元必要的程序指令和数据。该芯片***，可以由芯片构成，也可以包含芯片和其他分立器件。
其中，第九方面至第十四方面中任一种设计方式所带来的技术效果可参见第二方面中不同设计方式所带来的技术效果，此处不再赘述。
第十五方面，提供一种策略和计费控制PCC规则获取***，该PCC规则获取***包括：第一会话管理网元和策略控制功能网元；第一会话管理网元，用于发送该第一会话管理网元的服务区域信息；策略控制功能网元，用于接收该第一会话管理网元的服务区域信息，并根据该第一会话管理网元的服务区域信息，确定第一PCC规则，其中，该第一PCC规则包括该第一会话管理网元对应的应用相关的PCC规则策略控制功能网元，用于发送该第一PCC规则；第一会话管理网元，还用于接收该第一PCC规则。
在一种可能的设计中，第一会话管理网元为中间会话管理网元或者锚点会话管理网元；第一会话管理网元，用于发送该第一会话管理网元的服务区域信息，包括：用于向该策略控制功能网元发送该第一会话管理网元的服务区域信息；策略控制功能网元，用于接收第一会话管理网元的服务区域信息，包括：用于接收来自第一会话管理网元的该第一会话管理网元的服务区域信息；策略控制功能网元，用于发送该第一PCC规则，包括：用于向第一会话管理网元发送该第一PCC规则；第一会话管理网元，还用于接收该第一PCC规则，包括：用于接收来自策略控制功能网元的该第一PCC规则。
在一种可能的设计中，该一会话管理网元为中间会话管理网元；该PCC规则获取***还包括第二会话管理网元，该第二会话管理网元为锚点会话管理网元；第一会话管理网元，用于发送该第一会话管理网元的服务区域信息，包括：用于向第二会话管理网元发送该第一会话管理网元的服务区域信息以及该第一会话管理网元接收该第一PCC规则的地址信息；第二会话管理网元，用于接收来自第一会话管理网元的该第一会话管理网元的服务区域信息以及该第一会话管理网元接收该第一PCC规则的地址信息，并向策略控制功能网元发送第一请求消息，该第一请求消息携带该第一会话管理网元的服务区域信息以及该第一会话管理网元接收该第一PCC规则的地址信息；策略控制功能网元，用于接收该第一会话管理网元的服务区域信息，包括：用于接收来自第二会话管理网元的第一请求消息；策略控制功能网元，用于发送该第一PCC规则，包括：用于根据该第一会话管理网元接收该第一PCC规则的地址信息，向第一会话管理网元发送该第一PCC规则；第一会话管理网元，还用于接收该第一PCC规则，包括：用于接收来自策略控制功能网元的该第一PCC规则。
可选的，第一请求消息还携带第二会话管理网元的服务区域信息；策略控制功能网元，还用于根据该第二会话管理网元的服务区域信息，确定第二PCC规则，并向第二会话管理网元发送该第二PCC规则，该第二PCC规则包括该第二会话管理网元对应的应用相关的PCC规 则；第二会话管理网元，还用于接收来自策略控制功能网元的该第二PCC规则。
在一种可能的设计中，该第一会话管理网元为锚点会话管理网元；第一会话管理网元，用于发送该第一会话管理网元的服务区域信息，包括：用于向策略控制功能网元发送第一请求消息，该第一请求消息携带该第一会话管理网元的服务区域信息；策略控制功能网元，用于发送该第一PCC规则，包括：用于向第一会话管理网元发送该第一PCC规则；第一会话管理网元，还用于接收该第一PCC规则，包括：用于接收来自策略控制功能网元的该第一PCC规则。
可选的，该PCC规则获取***还包括第二会话管理网元，该第二会话管理网元为中间会话管理网元；第二会话管理网元，用于向第一会话管理网元发送该第二会话管理网元的服务区域信息以及该第二会话管理网元接收第二PCC规则的地址信息，其中，该第二PCC规则包括该第二会话管理网元对应的应用相关的PCC规则；第一会话管理网元，还用于接收来自该第二会话管理网元的该第二会话管理网元的服务区域信息以及该第二会话管理网元接收该第二PCC规则的地址信息；相应的，该第一请求消息还携带该第二会话管理网元的服务区域信息以及该第二会话管理网元接收该第二PCC规则的地址信息；策略控制功能网元，还用于根据该第二会话管理网元的服务区域信息，确定该第二PCC规则，并根据该第二会话管理网元接收该第二PCC规则的地址信息，向该第二会话管理网元发送该第二PCC规则；第二会话管理网元，还用于接收来自策略控制功能网元的该第二PCC规则。
在一种可能的设计中，该第一会话管理网元为中间会话管理网元；该PCC规则获取***还包括第二会话管理网元，该第二会话管理网元为锚点会话管理网元；第一会话管理网元，用于发送该第一会话管理网元的服务区域信息，包括：用于向第二会话管理网元发送该第一会话管理网元的服务区域信息；第二会话管理网元，用于接收来自第一会话管理网元的该第一会话管理网元的服务区域信息，并向该策略控制功能网元发送第二请求消息，该第二请求消息携带该第一会话管理网元的服务区域信息；策略控制功能网元，用于接收第一会话管理网元的服务区域信息，包括：用于接收来自第二会话管理网元的该第二请求消息；策略控制功能网元，用于发送第一PCC规则，包括：用于向第二会话管理网元发送响应消息，该响应消息携带第一PCC规则；第二会话管理网元，还用于接收来自策略控制功能网元的响应消息，并向第一会话管理网元发送第一PCC规则；第一会话管理网元，还用于接收第一PCC规则，包括：用于接收来自第二会话管理网元的第一PCC规则。
可选的，该第二请求消息还携带该第二会话管理网元的服务区域信息；策略控制功能网元，还用于根据第二会话管理网元的服务区域信息，确定第二PCC规则，该第二PCC规则包括该第二会话管理网元对应的应用相关的PCC规则；相应的，该响应消息还携带该第二PCC规则。
在一种可能的设计中，该第一会话管理网元为锚点会话管理网元；第一会话管理网元，用于发送第一会话管理网元的服务区域信息，包括：用于向策略控制功能网元发送第二请求消息，该第二请求消息携带该第一会话管理网元的服务区域信息；策略控制功能网元，用于接收第一会话管理网元的服务区域信息，包括：用于接收来自第一会话管理网元的第二请求消息；策略控制功能网元，用于发送第一PCC规则，包括：用于向该第一会话管理网元发送响应消息，该响应消息携带该第一PCC规则。
可选的，该PCC规则获取***还包括第二会话管理网元，该第二会话管理网元为中间会话管理网元；第二会话管理网元，用于向第一会话管理网元发送该第二会话管理网元的服务 区域信息；第一会话管理网元，还用于接收来自第二会话管理网元的该第二会话管理网元的服务区域信息；相应的，该第二请求消息还携带该第二会话管理网元的服务区域信息；策略控制功能网元，还用于根据该第二会话管理网元的服务区域信息，确定第二PCC规则，该第二PCC规则包括该第二会话管理网元对应的应用相关的PCC规则；相应的，该响应消息还携带该第二PCC规则；第一会话管理网元，还用于向第二会话管理网元发送第二PCC规则；第二会话管理网元，还用于接收来自第一会话管理网元的第二PCC规则。
在一种可能的设计中，该第一会话管理网元还可以是上述第三方面至第五方面中任一种设计方式所述的第一会话管理网元；或者，上述第六方面所述的计算机可读存储介质；或者上述第七方面所述的包含指令的计算机程序产品；或者，上述第八方面所述的芯片***。
在一种可能的设计中，该策略控制功能网元还可以是上述第九方面至第十一方面中任一种设计方式所述的策略控制功能网元；或者，上述第十二方面所述的计算机可读存储介质；或者上述第十三方面所述的包含指令的计算机程序产品；或者，上述第十四方面所述的芯片***。
其中，第十五方面中任一种设计方式所带来的技术效果可参见第一方面或第二方面中不同设计方式所带来的技术效果，此处不再赘述。
附图说明
图1为本申请实施例提供的一种PCC规则获取***的架构示意图；
图2为本申请实施例提供的一种5G***的网络架构示意图；
图3为本申请实施例提供的一种通信设备的硬件结构示意图；
图4为本申请实施例提供的PCC规则获取方法流程示意图一；
图5为本申请实施例提供的一种PCC架构示意图；
图6为本申请实施例提供的PCC规则获取方法流程示意图二；
图7为本申请实施例提供的PCC规则获取方法流程示意图三；
图8为本申请实施例提供的一种第一会话管理网元的结构示意图；
图9为本申请实施例提供的一种策略控制功能网元的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述。其中，在本申请的描述中，除非另有说明，“/”表示或的意思，例如，A/B可以表示A或B；本文中的“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。并且，在本申请的描述中，除非另有说明，“多个”是指两个或多于两个。另外，为了便于清楚描述本申请实施例的技术方案，在本申请的实施例中，采用了“第一”、“第二”等字样对功能和作用基本相同的相同项或相似项进行区分。本领域技术人员可以理解“第一”、“第二”等字样并不对数量和执行次序进行限定，并且“第一”、“第二”等字样也并不限定一定不同。
此外，本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
如图1所示，为本申请实施例提供的一种PCC规则获取***10，该PCC规则获取***10包括第一会话管理网元101和策略控制功能网元102。
其中，第一会话管理网元101，用于发送第一会话管理网元101的服务区域信息。
策略控制功能网元102，用于接收第一会话管理网元101的服务区域信息，并根据第一会话管理网101的服务区域信息，确定第一PCC规则，其中，第一PCC规则包括第一会话管理网元对应的应用相关的PCC规则。
策略控制功能网元102，还用于发送第一PCC规则。
第一会话管理网元101，该用于接收第一PCC规则。
可选的，本申请实施例中应用相关的PCC规则是指根据从应用功能(application function，AF)接收到的请求消息生成的PCC规则，该PCC规则描述的内容至少包括应用所部属的位置信息，如应用的部属位置所对应的数据网络接入标识(data network access identifier，DNAI)。
可选的，本申请实施例中，会话管理网元对应的应用相关的PCC规则所描述的内容至少包括应用在该会话管理网元的服务区域内的部署信息。如，第一会话管理网元对应的应用相关的PCC规则所描述的内容至少包括应用在该第一会话管理网元的服务区域内的部署信息；第二会话管理网元对应的应用相关的PCC规则所描述的内容至少包括应用在该第二会话管理网元的服务区域内的部署信息，在此统一说明，以下不再赘述。
可选的，本申请实施例中的服务区域信息可以包括所服务的DNAI列表、或者所服务的区域的标识信息、或者所服务的终端的位置信息等，本申请实施例对此不作具体限定。
可选的，本申请实施例中，第一会话管理网元101可以和策略控制功能网元102直接通信，也可以通过其他设备的转发进行通信，本申请实施例对此不作具体限定。
不像现有技术一样，会话管理网元在获取PCC规则时需要获取整个PLMN中所有应用相关的PCC规则。本申请实施例提供的PCC规则获取***中，策略控制功能网元可以获取第一会话管理网元的服务区域信息，并根据第一会话管理网的服务区域信息，确定第一PCC规则后发送该第一PCC规则，使得第一会话管理网元可以获取该第一PCC规则，其中，该第一PCC规则包括第一会话管理网元对应的应用相关的PCC规则。也就是说，基于本申请实施例提供的PCC规则获取***，可以在会话管理网元按照行政区域划分的情况下，使得会话管理网元可以获取该会话管理网元对应的应用相关的PCC规则，因此相对于现有技术，可以大大减少策略控制功能网元与会话管理网元之间传输的应用相关的PCC规则的数量，从而可以节省策略控制功能网元与会话管理网元之间的传输资源。
可选的，一种可能的实现方式中，本申请实施例中的第一会话管理网元101可以为锚点会话管理网元或者中间会话管理网元，本申请实施例对此不作具体限定。
其中，本申请实施例中的锚点会话管理网元为管理锚点用户面功能网元的会话管理网元，而锚点用户面功能网元为与数据网络连接的用户面功能网元，也可以称之为PDU会话锚点(PDU session anchor，PSA)，在此统一说明，以下不再赘述。
其中，本申请实施例中的中间会话管理网元为管理中间用户面功能网元的会话管理网元，而中间用户面功能网元为与终端的当前接入设备接口的用户面功能网元，在此统一说明，以下不再赘述。
相应的，第一会话管理网元101，用于发送第一会话管理网元101的服务区域信息，包括：用于向策略控制功能网元102发送第一会话管理网元的服务区域信息。
策略控制功能网元102，用于接收第一会话管理网元101的服务区域信息，包括：用于接收来自第一会话管理网元101的第一会话管理网元的服务区域信息。
策略控制功能网元102，用于发送第一PCC规则，包括：用于向第一会话管理网元101发送第一PCC规则。
第一会话管理网元101，还用于接收第一PCC规则，包括：用于接收来自策略控制功能网元102的第一PCC规则。
也就是说，本申请实施例中的第一会话管理网元101与策略控制功能网元102可以直接通信，本申请实施例对此不作具体限定。
或者，可选的，另一种可能的实现方式中，如图1所示，本申请实施例提供的PCC规则获取***10还可以包括第二会话管理网元103。此时，对应下述四种情况：
情况一：第一会话管理网元101为中间会话管理网元，第二会话管理网元103为锚点会话管理网元，此时：
第一会话管理网元101，用于发送第一会话管理网元101的服务区域信息，包括：用于向第二会话管理网元103发送第一会话管理网元101的服务区域信息以及第一会话管理网元101接收第一PCC规则的地址信息。
第二会话管理网元103，用于接收来自第一会话管理网元101的第一会话管理网元101的服务区域信息以及第一会话管理网元101接收第一PCC规则的地址信息，并向策略控制功能网元102发送第一请求消息，该第一请求消息携带第一会话管理网元101的服务区域信息以及第一会话管理网元101接收第一PCC规则的地址信息。
策略控制功能网元102，用于接收第一会话管理网元101的服务区域信息，包括：用于接收来自第二会话管理网元103的第一请求消息。
策略控制功能网元102，用于发送第一PCC规则，包括：用于根据第一会话管理网元101接收第一PCC规则的地址信息，向第一会话管理网元101发送第一PCC规则。
也就是说，本申请实施例中的第一会话管理网元101与策略控制功能网元102可以通过第二会话管理网元103进行通信，也可以直接通信；本申请实施例中的第二会话管理网元103与策略控制功能网元102可以直接通信，本申请实施例对此不作具体限定。
可选的，本申请实施例中的第一请求消息还可以携带第二会话管理网元103的服务区域信息。相应的，策略控制功能网元102，还用于根据第二会话管理网元103的服务区域信息，确定第二PCC规则，并向第二会话管理网元103发送第二PCC规则，该第二PCC规则包括第二会话管理网元103对应的应用相关的PCC规则。
第二会话管理网元103，还用于接收来自策略控制功能网元102的第二PCC规则。
情况二：第一会话管理网元101为锚点会话管理网元，第二会话管理网元103为中间会话管理网元，此时：
第一会话管理网元101，用于发送第一会话管理网元101的服务区域信息，包括：用于向策略控制功能网元102发送第一请求消息，第一请求消息携带第一会话管理网元101的服务区域信息。
策略控制功能网元102，用于发送第一PCC规则，包括：用于向第一会话管理网元101发送1第一PCC规则。
第一会话管理网元101，还用于接收第一PCC规则，包括：用于接收来自策略控制功能网元102的第一PCC规则。
也就是说，本申请实施例中的第一会话管理网元101与策略控制功能网元102可以直接通信。
可选的，本申请实施例中，第二会话管理网元103，用于向第一会话管理网元101发送第二会话管理网元103的服务区域信息以及第二会话管理网元103接收第二PCC规则的地址信息，其中，第二PCC规则包括第二会话管理网元103对应的应用相关的PCC规则。
第一会话管理网元101，还用于接收来自第二会话管理网元103的第二会话管理网元103的服务区域信息以及第二会话管理网元103接收第二PCC规则的地址信息。
相应的，第一请求消息还可以携带第二会话管理网元103的服务区域信息以及第二会话管理网元103接收第二PCC规则的地址信息。
策略控制功能网元102，还用于根据第二会话管理网元103的服务区域信息，确定第二PCC规则，并根据第二会话管理网元103接收第二PCC规则的地址信息，向第二会话管理网元103发送第二PCC规则。
第二会话管理网元103，还用于接收来自策略控制功能网元102的第二PCC规则。
也就是说，本申请实施例中的第二会话管理网元103与策略控制功能网元102可以通过第一会话管理网元101进行通信，也可以直接通信，本申请实施例对此不作具体限定。
情况三：第一会话管理网元101为中间会话管理网元，第二会话管理网元103为锚点会话管理网元，此时：
第一会话管理网元101，用于发送第一会话管理网元101的服务区域信息，包括：用于向第二会话管理网元103发送第一会话管理网元101的服务区域信息；
第二会话管理网元103，用于接收来自第一会话管理网元101的第一会话管理网元101的服务区域信息，并向策略控制功能网元102发送第二请求消息，该第二请求消息携带第一会话管理网元101的服务区域信息。
策略控制功能网元102，用于接收第一会话管理网元101的服务区域信息，包括：用于接收来自第二会话管理网元103的第一请求消息。
策略控制功能网元102，用于发送第一PCC规则，包括：用于向第二会话管理网元103发送响应消息，该响应消息携带第一PCC规则；
第二会话管理网元103，还用于接收来自策略控制功能网元102的响应消息，并向第一会话管理网元101发送第一PCC规则；
第一会话管理网元101，还用于接收第一PCC规则，包括：用于接收来自第二会话管理网元103的第一PCC规则。
也就是说，本申请实施例中的第一会话管理网元101与策略控制功能网元102可以通过第二会话管理网元103进行通信；本申请实施例中的第二会话管理网元103与策略控制功能网元102可以直接通信，本申请实施例对此不作具体限定。
可选的，本申请实施例中的第二请求消息还可以携带第二会话管理网元103的服务区域信息。
策略控制功能网元102，还用于根据第二会话管理网元103的服务区域信息，确定第二PCC规则，该第二PCC规则包括第二会话管理网元103对应的应用相关的PCC规则。
相应的，响应消息还可以携带携带第二PCC规则。
情况四：第一会话管理网元101为锚点会话管理网元，第二会话管理网元103为中间会话管理网元，此时：
第一会话管理网元101，用于发送第一会话管理网元101的服务区域信息，包括：用于向策略控制功能网元102发送第二请求消息，第二请求消息携带第一会话管理网元101的服务区域信息。
策略控制功能网元102，用于接收第一会话管理网元101的服务区域信息，包括：用于接收来自第一会话管理网元101的第二请求消息。
策略控制功能网元102，用于发送第一PCC规则，包括：用于向第一会话管理网元101发送响应消息，响应消息携带第一PCC规则。
也就是说，本申请实施例中的第一会话管理网元101与策略控制功能网元102可以直接通信。
可选的，本申请实施例中，第二会话管理网元103，用于向第一会话管理网元101发送第二会话管理网元103的服务区域信息。
第一会话管理网元101，还用于接收来自第二会话管理网元103的第二会话管理网元103的服务区域信息。
相应的，第二请求消息还可以携带第二会话管理网元103的服务区域信息。
策略控制功能网元102，还用于根据第二会话管理网元103的服务区域信息，确定第二PCC规则，该第二PCC规则包括第二会话管理网元103对应的应用相关的PCC规则。
相应的，响应消息还可以携带第二PCC规则；
第一会话管理网元101，还用于向第二会话管理网元103发送第二PCC规则。
第二会话管理网元103，还用于接收来自第一会话管理网元101的第二PCC规则。
也就是说，本申请实施例中的第二会话管理网元103与策略控制功能网元102可以通过第一会话管理网元101进行通信，本申请实施例对此不作具体限定。
根据上述情况一至情况四可知，基于本申请实施例提供的PCC规则获取***，可以在会话管理网元按照行政区域划分的情况下，不仅为终端当前所在区域服务的中间会话管理网元可以获取对应的应用相关的PCC规则，而且锚点会话管理网元也可以获取对应的应用相关的PCC规则。
可选的，图1所示的PCC规则获取***10可以应用于5G网络以及未来其它的网络，本发明实施例对此不作具体限定。
示例性的，假设图1所示的PCC规则获取***10应用于5G网络，则上述的锚点会话管理网元所对应的网元或者实体可以为5G网络中的锚点SMF(anchor SMF，A-SMF)网元，上述的中间会话管理网元所对应的网元或者实体可以为5G网络中的中间SMF(intermediate SMF，I-SMF)网元；上述的锚点用户面功能网元所对应的网元或者实体可以为5G网络中的锚点UPF(anchor UPF，A-UPF)网元；上述的中间用户面功能网元所对应的网元或者实体可以为5G网络中的中间UPF(intermediate UPF，I-UPF)网元；上述的策略控制功能网元所对应的网元或者实体可以为5G网络中的PCF网元。
此外，如图2所示，该5G网络还可以包括接入设备、接入和移动性管理功能(access and mobility management function，AMF)网元、统一数据管理(unified data management，UDM)网元等，本申请实施例对此不作具体限定。其中，I-SMF网元为网络A服务，A-SMF网元为网络B服务。
其中，终端通过接入设备接入网络，并且终端通过下一代网络(next generation，N)接口1(简称N1)与AMF网元通信；接入设备通过N2接口(简称N2)与AMF网元通信，通 过N3接口(简称N3)与I-UPF网元通信；AMF网元通过N11接口(简称N11)与I-SMF网元通信，通过N15接口(简称N15)与PCF网元通信，通过N8接口(简称N8)与UDM网元通信；A-SMF网元通过N10接口(简称N10)与UDM网元通信，通过N7接口(简称N7)与PCF网元通信，通过N16*接口(简称N16*)与I-SMF网元通信，通过N4接口(简称N4)与A-UPF网元通信；I-SMF网元通过N4接口(简称N4)与I-UPF网元通信，通过Nx接口(简称Nx)与PCF网元通信；I-UPF网元通过N9接口(简称N9)与A-UPF网元通信；A-UPF网元通过N6接口(简称N6)接入数据网络。
需要说明的是，图2中的Nx可以是在N7上进行的改动，也可以是新定义的接口；N16*可以是在N16上进行的改动，也可以是新定义的接口；本申请实施例对此均不作具体限定。
需要说明的是，图2中的各个网元之间的接口名字只是一个示例，具体实现中接口名字可能为其他名字，本申请实施例对此不作具体限定。
需要说明的是，图2中的A-SMF网元、I-SMF网元、接入设备、AMF网元、UDM网元、PCF网元、I-UPF网元和A-UPF网元等仅是一个名字，名字对设备本身不构成限定。在5G网络以及未来其它的网络中，A-SMF网元、I-SMF网元、接入设备、AMF网元、UDM网元、PCF网元、I-UPF网元和A-UPF网元等所对应的网元或实体也可以是其他的名字，本申请实施例对此不作具体限定。例如，该I-UPF网元还有可能被替换为I-UPF或者I-UPF实体，等，在此进行统一说明，以下不再赘述。
需要说明的是，图2所示的5G网络仅是示例性的以终端的当前接入设备所在的区域和A-SMF网元的服务区域不相同为例进行示意，当然，终端的当前接入设备所在的区域和A-SMF网元的服务区域也可能相同，也就是说，I-SMF网元只有当终端移出A-SMF网元的服务区域时才需要，而当终端位于A-SMF网元的服务区域(即图2中的网络B)时不需要I-SMF网元。此外，终端在A-SMF的服务区域时可能会***由A-SMF网元控制的I-UPF网元，本申请实施例对此不作具体限定。
可选的，本申请实施例中所涉及到的终端(terminal)可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备；还可以包括用户单元(subscriber unit)、蜂窝电话(cellular phone)、智能电话(smart phone)、无线数据卡、个人数字助理(personal digital assistant，PDA)电脑、平板型电脑、无线调制解调器(modem)、手持设备(handheld)、膝上型电脑(laptop computer)、无绳电话(cordless phone)或者无线本地环路(wireless local loop，WLL)台、机器类型通信(machine type communication,MTC)终端、用户设备(user equipment，UE)，移动台(mobile station，MS)，终端设备(terminal device)或者中继用户设备等。其中，中继用户设备例如可以是5G家庭网关(residential gateway，RG)。为方便描述，本申请中，上面提到的设备统称为终端。
可选的，本申请实施例中所涉及的接入设备指的是接入核心网的设备，例如可以是基站，宽带网络业务网关(broadband network gateway，BNG)，汇聚交换机，非第三代合作伙伴计划(3rd generation partnership project，3GPP)接入设备等。基站可以包括各种形式的基站，例如：宏基站，微基站(也称为小站)，中继站，接入点等。
可选的，本申请实施例图1中的第一会话管理网元、第二会话管理网元或者策略控制功能网元可以由一个设备实现，也可以由多个设备共同实现，还可以是一个设备内的一个功能模块，本申请实施例对此不作具体限定。可以理解的是，上述功能既可以是硬件设备中的网 络元件，也可以是在专用硬件上运行的软件功能，或者是平台(例如，云平台)上实例化的虚拟化功能。
例如，本申请实施例图1中的第一会话管理网元、第二会话管理网元或者策略控制功能网元可以通过图3中的通信设备来实现。图3所示为本申请实施例提供的通信设备的硬件结构示意图。该通信设备300包括至少一个处理器301，通信线路302，存储器303以及至少一个通信接口304。
处理器301可以是一个通用中央处理器(central processing unit，CPU)，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，或一个或多个用于控制本申请方案程序执行的集成电路。
通信线路302可包括一通路，在上述组件之间传送信息。
通信接口304，使用任何收发器一类的装置，用于与其他设备或通信网络通信，如以太网，无线接入网(radio access network，RAN)，无线局域网(wireless local area networks，WLAN)等。
存储器303可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器可以是独立存在，通过通信线路302与处理器相连接。存储器也可以和处理器集成在一起。
其中，存储器303用于存储执行本申请方案的计算机执行指令，并由处理器301来控制执行。处理器301用于执行存储器303中存储的计算机执行指令，从而实现本申请下述实施例提供的PCC规则获取方法。
可选的，本申请实施例中的计算机执行指令也可以称之为应用程序代码，本申请实施例对此不作具体限定。
在具体实现中，作为一种实施例，处理器301可以包括一个或多个CPU，例如图3中的CPU0和CPU1。
在具体实现中，作为一种实施例，通信设备300可以包括多个处理器，例如图3中的处理器301和处理器308。这些处理器中的每一个可以是一个单核(single-CPU)处理器，也可以是一个多核(multi-CPU)处理器。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
在具体实现中，作为一种实施例，通信设备300还可以包括输出设备305和输入设备306。输出设备305和处理器301通信，可以以多种方式来显示信息。例如，输出设备305可以是液晶显示器(liquid crystal display，LCD)，发光二级管(light emitting diode，LED)显示设备，阴极射线管(cathode ray tube，CRT)显示设备，或投影仪(projector)等。输入设备306和处理器301通信，可以以多种方式接收用户的输入。例如，输入设备306可以是鼠标、键盘、触摸屏设备或传感设备等。
上述的通信设备300可以是一个通用设备或者是一个专用设备。在具体实现中，通信设备300可以是台式机、便携式电脑、网络服务器、掌上电脑(personal digital assistant， PDA)、移动手机、平板电脑、无线终端设备、嵌入式设备或有图3中类似结构的设备。本申请实施例不限定通信设备300的类型。
下面将结合图1至图3对本申请实施例提供的PCC规则获取方法进行具体阐述。
需要说明的是，本申请下述实施例中各个网元之间的消息名字或消息中各参数的名字等只是一个示例，具体实现中也可以是其他的名字，本申请实施例对此不作具体限定。
以图1所示的PCC规则获取***应用于如图2所示的5G网络，且会话建立过程中需要第一I-SMF网元为例，如图4所示，为本申请实施例提供的一种PCC规则获取方法，该PCC规则获取方法包括如下步骤：
S400、第一I-SMF网元向A-SMF网元发送会话建立请求，以使得A-SMF网元接收来自第一I-SMF网元的会话建立请求。
其中，本申请实施例中，来自第一I-SMF网元的会话建立请求是由AMF网元给第一I-SMF网元发送会话建立请求触发的，相关实现可参考现有的方案，在此不再赘述。
S401、A-SMF网元向PCF网元发送请求消息1，以使得PCF网元接收来自A-SMF网元的请求消息1。
其中，该请求消息1中携带A-SMF网元的服务区域信息。
可选的，本申请实施例中，A-SMF网元的服务区域信息例如可以包括A-SMF网元所服务的DNAI列表、或者A-SMF网元所服务的区域的标识信息、或者A-SMF网元所服务的终端的位置信息等，本申请实施例对此不作具体限定。
可选的，本申请实施例中的请求消息1还可以携带A-SMF网元的类型，其中，A-SMF网元的类型用于表征该A-SMF网元在该终端的会话中的角色，如A-SMF网元的类型为A-SMF网元，本申请实施例对此不作具体限定。
S402、PCF网元根据A-SMF网元的服务区域信息，确定PCC规则1，其中，该PCC规则1包括A-SMF网元对应的应用相关的PCC规则。
可选的，若A-SMF网元的服务区域信息为A-SMF网元所服务的DNAI列表，则PCF网元根据A-SMF网元的服务区域信息，确定PCC规则1具体可以包括：PCF网元根据A-SMF网元所服务的DNAI列表，确定PCC规则1。比如，PCC规则1中仅包括在该A-SMF网元所服务的DNAI中有部署的应用相关的PCC规则。
或者，可选的，若A-SMF网元的服务区域信息为A-SMF网元所服务的区域的标识信息，则PCF网元根据A-SMF网元的服务区域信息，确定PCC规则1具体可以包括：PCF网元根据A-SMF网元所服务的区域的标识信息确定A-SMF网元所服务的DNAI列表，进而PCF网元根据A-SMF网元所服务的DNAI列表，确定PCC规则1。
或者，可选的，若A-SMF网元的服务区域信息为A-SMF网元所服务的终端的位置信息，则PCF网元根据A-SMF网元的服务区域信息，确定PCC规则1具体可以包括：PCF网元根据A-SMF网元所服务的终端的位置信息，确定A-SMF网元所服务的区域的标识信息，进而PCF网元根据A-SMF网元所服务的区域的标识信息确定A-SMF网元所服务的DNAI列表，进而PCF网元根据A-SMF网元所服务的DNAI列表，确定PCC规则1。
可选的，若请求消息1中携带A-SMF网元的类型，则PCF网元在确定PCC规则1时，还可以考虑A-SMF网元的类型。也就是说，PCF网元可以根据A-SMF网元的服务区域信息和A-SMF网元的类型，确定PCC规则1。比如，本申请实施例中的请求消息1中携带的A-SMF网元的类型为A-SMF网元，则PCC规则1中可以包括流量导向策略(traffic steering policy)， 该流量导向策略用于表征数据如何从与数据网络连接的UPF网元(即图2中的A-UPF网元)传输到数据网络，但是此时PCC规则1中不包括上行分流策略，该上行分流策略用于表征数据如何进行本地分流。
S403、PCF网元向A-SMF网元发送响应消息1，以使得A-SMF网元接收来自PCF网元的响应消息1，其中，该响应消息1中携带PCC规则1。
可选的，本申请实施例中，该响应消息1中还可以携带会话相关的会话策略资源标识，该会话策略资源标识用于定位该会话相关的会话策略资源，本申请实施例对此不作具体限定。
示例性的，该会话相关的会话策略资源标识例如可以是一个通用资源标识(universal resource identifier，URI)，该URI可用于唯一定位该会话相关的会话策略资源。
S404、A-SMF网元向第一I-SMF网元发送会话建立响应，以使得第一I-SMF网元接收来自A-SMF网元的会话建立响应。
可选的，本申请实施例中，若响应消息1中还可以携带会话相关的会话策略资源标识，则本申请实施例中的会话建立响应中还可以携带会话相关的会话策略资源标识，本申请实施例对此不作具体限定。当然，会话相关的会话策略资源标识也可以携带在其他消息中发送给第一I-SMF网元，本申请实施例对此不作具体限定。
可选的，本申请实施例中，A-SMF网元还可以向第一I-SMF网元发送PCF网元的信息，该PCF网元的信息用于第一I-SMF网元与A-SMF网元选择相同的PCF网元。其中，该PCF网元的信息例如可以是PCF网元的地址或者PCF网元的标识等，第一I-SMF网元根据PCF网元的信息可以查找到该PCF网元并可以与之通信，本申请实施例对此不作具体限定。此外，该PCF网元的信息可以携带在会话建立响应中发送给第一I-SMF网元，也可以携带在其他消息中发送给第一I-SMF网元，本申请实施例对此不作具体限定。
可选的，本申请实施例中，会话相关的会话策略资源标识中也可以包括PCF网元的信息，也就是说，根据会话相关的会话策略资源标识，第一I-SMF网元也可以与A-SMF网元选择相同的PCF网元，本申请实施例对此不作具体限定。
进一步的，本申请实施例提供的PCC规则获取方法还可以包括如下步骤：
S405、第一I-SMF网元向PCF网元发送请求消息2，以使得PCF网元接收来自第一I-SMF网元的请求消息2。
其中，该请求消息2中携带第一I-SMF网元的服务区域信息。
可选的，本申请实施例中，第一I-SMF网元的服务区域信息例如可以包括第一I-SMF网元所服务的DNAI列表、或者第一I-SMF网元所服务的区域的标识信息、或者第一I-SMF网元所服务的终端的位置信息等，本申请实施例对此不作具体限定。
可选的，本申请实施例中的请求消息2还可以携带第一I-SMF网元的类型，其中，第一I-SMF网元的类型用于表征该第一I-SMF网元在该终端的会话中的角色，如第一I-SMF网元的类型为I-SMF网元，本申请实施例对此不作具体限定。
可选的，本申请实施例中，若A-SMF网元向第一I-SMF网元发送会话相关的会话策略资源标识，则请求消息2中还可以携带该会话策略资源标识，以便PCF网元可以根据该会话策略资源标识定位该会话相关的会话策略资源。
可选的，本申请实施例中，若第一I-SMF网元获取不到会话相关的会话策略资源标识，则该请求消息2中可以携带该终端的签约永久标识(subscriber permanent identity，SUPI)以及该终端的会话对应的会话标识；其中，SUPI和会话标识用于将第一I-SMF网元对应的会 话相关的会话策略资源与A-SMF网元对应的会话相关的会话策略资源相关联。也就是说，对于终端的会话，可以分别为第一I-SMF网元和A-SMF网元创建一个会话相关的会话策略资源，进而，当第一I-SMF网元向PCF网元发送该终端的SUPI以及该终端的会话对应的会话标识时，或者，当A-SMF网元向PCF网元发送该终端的SUPI以及该终端的会话对应的会话标识时，PCF网元可以将第一I-SMF网元对应的会话相关的会话策略资源与A-SMF网元对应的会话相关的会话策略资源相关联，进而可以确定出会话相关的会话策略资源。
或者，可选的，本申请实施例中，若第一I-SMF网元获取不到会话相关的会话策略资源标识，则该请求消息2中可以携带该终端的SUPI以及该终端的会话对应的会话标识，以便PCF网元可以根据SUPI和会话标识定位该会话相关的会话策略资源。也就是说，对于终端的会话，可以仅为第一I-SMF网元和A-SMF网元创建一个会话相关的会话策略资源，比如，可以为A-SMF网元创建一个会话相关的会话策略资源，当第一I-SMF网元向PCF网元发送该终端的SUPI以及该终端的会话对应的会话标识时，PCF网元可以根据SUPI和会话标识定位该会话相关的会话策略资源，本申请实施例对此不作具体限定。
可选的，本申请实施例中，第一I-SMF网元可以根据步骤S404中的PCF网元的信息或者会话相关的会话策略资源标识确定PCF网元之后，向PCF网元发送请求消息2；也可以是通过其他方式确定PCF网元之后，向PCF网元发送请求消息2。比如，第一I-SMF网元可以向绑定支持功能(binding support functionality，BSF)网元发送查询消息，该查询消息携带第一I-SMF网元所服务的终端的会话对应的会话标识，该会话标识用于选择PCF网元；进而，BSF网元可以根据该会话标识选择PCF网元之后，向第一I-SMF网元发送查询响应，以使得第一I-SMF网元可以接收来自BSF网元的查询响应，其中，该查询响应携带PCF网元的信息。
需要说明的是，在PCC架构中，BSF网元可以保存会话对应的PCF网元的信息。具体的，如图5所示，在PCF网元创建会话相关的会话策略资源时，可以向BSF网元注册会话标识和PCF网元的信息等，以便其他网元，如AF网元、网络开放功能(network exposure function，NEF)网元或者SMF网元等可以根据会话标识查询BSF网元，以获得该会话对应的PCF网元的信息，从而将相同会话的PCC消息发送给相同的PCF网元，本申请实施例对此不作具体限定。其中，PCF网元中的会话标识通常是从第一个与PCF网元建立该会话标识对应的会话的SMF网元中获取的。比如，本申请实施例中，若A-SMF网元先与PCF网元建立会话，则该会话标识是从A-SMF网元获取的；若第一I-SMF网元先与PCF网元建立会话，则该会话标识是从第一I-SMF网元获取的，在此统一说明，以下不再赘述。
S406、PCF网元根据第一I-SMF网元的服务区域信息，确定PCC规则2，其中，该PCC规则2包括第一I-SMF网元对应的应用相关的PCC规则。
其中，PCF网元根据第一I-SMF网元的服务区域信息，确定PCC规则2的具体实现可参考步骤S402中PCF网元根据A-SMF网元的服务区域信息，确定PCC规则1的相关实现，在此不再赘述。
可选的，若请求消息2中携带第一I-SMF网元的类型，则PCF网元在确定PCC规则2时，还可以考虑第一I-SMF网元的类型。也就是说，PCF网元可以根据第一I-SMF网元的服务区域信息和第一I-SMF网元的类型，确定PCC规则2。比如，本申请实施例中的请求消息2中携带的第一I-SMF网元的类型为I-SMF网元，则PCC规则2中可以包括上行分流策略，该上行分流策略用于表征数据如何进行本地分流。可选的，该PCC规则2中还可以包括流量导向 策略，该流量导向策略用于表征数据如何从与数据网络连接的UPF网元(即图2中的A-UPF网元)传输到数据网络，本申请实施例对此不作具体限定。
S407、PCF网元向第一I-SMF网元发送响应消息2，以使得第一I-SMF网元接收来自PCF网元的响应消息2，其中，该响应消息2中携带PCC规则2。
上述步骤S400-S407给出了会话建立过程中A-SMF网元获取A-SMF网元对应的应用相关的PCC规则、以及第一I-SMF网元获取第一I-SMF网元对应的应用相关的PCC规则的具体实现。其中，步骤S400-S404与步骤S405-S407之间没有必然的先后顺序，可以如上所述，先执行步骤S400-S404，再执行步骤S405-S407；或者，也可以先执行步骤S405-S407，再执行步骤400-S404，此时，步骤S405中不携带会话相关的会话策略资源标识，步骤S407中可以携带会话相关的会话策略资源标识，进而步骤S400中的会话建立请求中可以携带该会话相关的会话策略资源标识，步骤S403-S404中可以不用携带该会话相关的会话策略资源标识，同时，A-SMF网元也不需要向第一I-SMF网元发送PCF网元的信息，在此统一说明，以下不再赘述。此外，若先执行步骤S405-S407，再执行步骤400-S404，可选的，第一I-SMF网元还可以将PCF网元的信息发送给A-SMF网元，该PCF网元的信息用于第一I-SMF网元与A-SMF网元选择相同的PCF网元，本申请实施例对此不作具体限定。
可选的，本申请实施例中，若终端当前位于A-SMF网元的服务区域内，则可以仅执行步骤S401-S403，不执行S400、以及S404-S407。其中，步骤S401是A-SMF网元接收到来自AMF网元的会话建立请求之后发起的，在此统一说明，以下不再赘述。
需要说明的是，若会话建立过程中终端位于A-SMF网元的服务区域内，则可以仅选择A-SMF网元，此时可以仅执行步骤S401-S403，本申请实施例对此不作具体限定。
可选的，本申请实施例中，在第一I-SMF网元和A-SMF网元都已经与PCF网元建立了连接之后，若PCF网元接收来自AF网元的请求，或者PCF网元接收到终端的签约变更指示等，则可能需要更新PCC规则，下面以PCF网元接收来自AF网元的请求为例进行说明，则本申请实施例提供的PCC规则获取方法还可以包括如下步骤：
S408、AF网元向PCF网元发送请求消息3，以使得PCF网元接收来自AF网元的请求消息3。
示例性的，假设一个业务提供商(service provider)更新了应用的部署或者部署了新的应用，则AF网元可能给PCF网元发送请求消息3。该请求消息3中携带应用的信息、应用所部署的DNAI或者应用所针对的终端的标识等信息，本申请实施例对此不作具体限定。
S409、PCF网元向A-SMF网元发送更新的PCC规则1，以使得A-SMF网元接收来自PCF网元的更新的PCC规则1。
可选的，本申请实施例中，PCF网元可以根据A-SMF网元的服务区域信息和可选的A-SMF网元的类型、以及从AF网元接收的请求消息3确定是否需要向A-SMF网元发送更新的PCC规则1。例如，若AF网元的请求消息3中指示在A-SMF网元的服务区域增加了新的应用部署，则PCF网元确定需要向A-SMF网元发送更新的PCC规则1，以便将新应用的部署位置通知给A-SMF网元。也就是说，本申请实施例中的步骤S409是个可选的步骤，在需要更新PCC规则1的情况下才执行步骤S409，在此统一说明，以下不再赘述。
S410、PCF网元向第一I-SMF网元发送更新的PCC规则2，以使得第一I-SMF网元接收来自PCF网元的更新的PCC规则2。
可选的，本申请实施例中，PCF网元可以根据第一I-SMF网元网元的服务区域信息和可 选的第一I-SMF网元的类型、以及从AF网元接收的请求消息3确定是否需要向第一I-SMF网元发送更新的PCC规则2。例如，若AF网元的请求消息3中指示在第一I-SMF网元的服务区域增加了新的应用部署，则PCF网元确定需要向第一I-SMF网元发送更新的PCC规则2，以便将新应用的部署位置通知给第一I-SMF网元。也就是说，本申请实施例中的步骤S410是个可选的步骤，在需要更新PCC规则2的情况下才执行步骤S410，在此统一说明，以下不再赘述。
需要说明的是，本申请实施例中，步骤S409与步骤S410之间没有必然的执行先后顺序，可以是先执行步骤S409，再执行步骤S410；也可以是先执行步骤S410，再执行步骤S409；还可以是同时执行步骤S409和S410，本申请实施例对此不作具体限定。
可选的，本申请实施例中，在第一I-SMF网元和A-SMF网元都已经与PCF网元建立了连接之后，PCF网元也可以根据第一I-SMF网元对应的更新的会话信息进行PCC规则更新。比如，本申请实施例提供的PCC规则获取方法还可以包括如下步骤：
S411、第一I-SMF网元向PCF网元发送第一I-SMF网元对应的更新的会话信息，以使得PCF网元接收来自第一I-SMF网元的第一I-SMF网元对应的更新的会话信息。
示例性的，在第一I-SMF网元确定***了本地锚点之后，第一I-SMF网元可以向PCF网元发送第一I-SMF网元对应的更新的会话信息。其中，该第一I-SMF网元对应的更新的会话信息例如可以是本地会话的互联网协议(internet protocol，IP)地址、本地会话上应用的信息或者接入本地会话所使用的本地DNAI中的至少一个，本申请实施例对此不作具体限定。
S412、PCF网元根据第一I-SMF网元对应的更新的会话信息，确定PCC规则3和PCC规则4中的至少一个，其中，PCC规则3包括第一I-SMF网元对应的本地会话策略，PCC规则4包括A-SMF网元对应的本地会话策略。
可选的，本申请实施例中的本地会话策略例如可以包括本地会话的计费策略或者本地会话的服务质量(quality of service，QoS)策略等，本申请实施例对此不作具体限定。
可选的，假设可以确定出PCC规则3，则本申请实施例提供的PCC规则获取方法还可以包括如下步骤：
S413、PCF网元向第一I-SMF网元发送PCC规则3，以使得第一I-SMF网元接收来自PCF网元的PCC规则3。
可选的，假设可以确定出PCC规则4，则本申请实施例提供的PCC规则获取方法还可以包括如下步骤：
S414、PCF网元向A-SMF网元发送PCC规则4，以使得A-SMF网元接收来自PCF网元的PCC规则4。
可选的，本申请实施例也可以既执行步骤S408-S410，又执行步骤S411-S414，本申请实施例对此不作具体限定。
可选的，本申请实施例中，在会话建立之后，还可能发生I-SMF网元的***、删除或切换等过程。比如，假设会话建立时只选择了A-SMF网元(由于终端位于A-SMF网元的服务区域)，则当终端移出A-SMF网元的服务区域时需要***第二I-SMF网元；或者，假设会话中已经存在了第一I-SMF网元，则在终端移出第一I-SMF网元的服务区域时，需要进行第一I-SMF网元的切换；或者，假设会话中已经存在了第一I-SMF网元，则当终端从第一I-SMF网元的服务区域移回A-SMF网元的服务区域时，需要删除第一I-SMF网元相关的信息。下面以I-SMF网元的切换为例进行说明：
假设终端移出第一I-SMF网元的服务区域之后，AMF网元为该终端选择了第二I-SMF网元，则本申请实施例提供的PCC规则获取方法还可以包括如下步骤：
S415、可选的，第二I-SMF网元获取会话相关的会话策略资源标识。
可选的，本申请实施例中，第二I-SMF网元可以从第一I-SMF网元或者A-SMF网元中获取会话相关的会话策略资源标识，本申请实施例对此不作具体限定。
其中，在第二I-SMF网元从第一I-SMF网元中获取会话相关的会话策略资源标识的情况下，AMF网元在给第二I-SMF网元发送会话建立请求时需要将第一I-SMF网元的信息发送给第二I-SMF网元，以便第二I-SMF网元根据第一I-SMF网元的信息查找到对应的第一I-SMF网元。类似的，在第二I-SMF网元从A-SMF网元中获取会话相关的会话策略资源标识的情况下，AMF网元在给第二I-SMF网元发送会话建立请求时需要将A-SMF网元的信息发送给第二I-SMF网元，以便第二I-SMF网元根据A-SMF网元的信息查找到对应的A-SMF网元，本申请实施例对此不作具体限定。
S416-S418、与步骤S405-S407类似，区别仅在于：将步骤S405-S407中的第一I-SMF网元替换为第二I-SMF网元；将步骤S405-S407中的请求消息2替换为请求消息4，响应消息2替换为响应消息4；将步骤S405-S407中的PCC规则2替换为PCC规则5，相关描述可参考步骤S405-S407，在此不再赘述。
可选的，在切换过程中，本申请实施例提供的PCC规则获取方法还可以包括如下步骤：
S419、第一I-SMF网元向PCF网元发送删除请求，以使得PCF网元接收来自第一I-SMF网元的删除请求，其中，该删除请求用于请求删除PCF网元中该会话对应的第一I-SMF网元相关的信息。
可选的，本申请实施例中，该会话对应的第一I-SMF网元相关的信息例如可以是PCF网元为第一I-SMF网元相关的会话资源创建的会话策略资源，资源中包括第一I-SMF网元接收更新的PCC规则的地址信息或者第一I-SMF网元的服务区域信息等；或者，第一I-SMF网元相关的信息可以是该会话对应的会话策略资源中包括的信息，如第一I-SMF网元接收更新的PCC规则的地址信息、第一I-SMF网元的服务区域信息等，本申请实施例对此不作具体限定。
S420、PCF网元根据删除请求，删除该会话对应的第一I-SMF网元相关的信息。
其中，步骤S419-S420给出了一种删除会话对应的第一I-SMF网元相关的信息的可选实现方式，当然，PCF网元也可以在获知终端移出第一I-SMF网元的服务区域的情况下，主动删除会话对应的第一I-SMF网元相关的信息，而不需要在接收到来自第一I-SMF网元的删除请求之后再删除会话对应的第一I-SMF网元相关的信息。比如，在接收到来自第二I-SMF网元的请求消息4之后，可以获知终端移出第一I-SMF网元的服务区域，从而可以删除会话对应的第一I-SMF网元相关的信息，本申请实施例对此不作具体限定。
在终端在终端移出第一I-SMF网元的服务区域时，删除会话对应的第一I-SMF网元相关的信息，可以节省PCF网元的存储空间，减少资源的浪费。
上述步骤S415-S420给出了第一I-SMF网元切换过程中PCC规则的获取方法。此外，若会话建立过程中只选择了A-SMF网元，则第二I-SMF网元的***过程中PCC规则的获取方法与上述切换过程中PCC规则的获取方法类似，只是在步骤S415中，第二I-SMF网元从A-SMF网元获取会话相关的会话策略资源标识，此外，可以不用执行步骤S419-S420。假设终端从第一I-SMF网元的服务区域移回A-SMF网元的服务区域，则可以不用执行步骤S415-S418，仅执行步骤S419-S420即可；或者可以不用执行步骤S415-S418，由A-SMF网元通知PCF网 元终端移入A-SMF网元的服务区域，进而PCF网元删除该会话对应的第一I-SMF网元相关的信息，在此统一说明，以下不再赘述。
此外，需要说明的是，在I-SMF网元的***、切换或者删除过程中，由于终端位置的变化，因此PCF网元都有可能向A-SMF网元发送A-SMF网元相关的PCC规则，本申请实施例对此不作具体限定。
基于本申请实施例提供的PCC规则获取方法，可以大大减少PCF网元与SMF网元之间传输的应用相关的PCC规则的数量，从而可以节省PCF网元与SMF网元之间的传输资源。相关技术效果分析可参考PCC规则获取***部分，在此不再赘述。
其中，上述步骤S400至S420中的PCF网元、第一I-SMF网元、第二I-SMF网元或者A-SMF网元的动作可以由图3所示的通信设备300中的处理器301调用存储器303中存储的应用程序代码来执行，本实施例对此不作任何限制。
可选的，以图1所示的PCC规则获取***应用于如图2所示的5G网络，且会话建立过程中需要第一I-SMF网元为例，如图6所示，为本申请实施例提供的另一种PCC规则获取方法，该PCC规则获取方法相对于如图4所示的PCC规则获取方法的区别主要在于本申请实施例中，I-SMF网元(包括第一I-SMF和第二I-SMF)不直接向PCF网元发送请求消息，而是将I-SMF网元接收PCC规则的地址信息(如URI)通过A-SMF网元发送给PCF网元，进而PCF网元可以根据I-SMF网元接收PCC规则的地址信息直接向I-SMF发送PCC规则。具体的，该PCC规则获取方法包括如下步骤：
S600、第一I-SMF网元向A-SMF网元发送会话建立请求，以使得A-SMF网元接收来自第一I-SMF网元的会话建立请求。其中，该会话建立请求携带第一I-SMF网元的服务区域信息以及第一I-SMF网元接收PCC规则2的地址信息。
其中，第一I-SMF网元的服务区域信息以及PCC规则2的相关描述可参考图4所示的实施例，在此不再赘述。
可选的，该会话建立请求中还可以携带第一I-SMF网元的类型。其中，第一I-SMF网元的类型的相关描述可参考图4所示的实施例，在此不再赘述。
S601、A-SMF网元向PCF网元发送请求消息1，以使得PCF网元接收来自A-SMF网元的请求消息1。
其中，该请求消息1中携带第一I-SMF网元的服务区域信息以及第一I-SMF网元接收PCC规则2的地址信息。
可选的，若会话建立请求中携带第一I-SMF网元的类型，则步骤S601中的请求消息1中还可以携带第一I-SMF网元的类型，本申请实施例对此不作具体限定。
可选的，该请求消息1中还可以携带A-SMF网元的服务区域信息。
可选的，该请求消息1中还可以携带A-SMF网元的类型。
其中，A-SMF网元的服务区域信息以及A-SMF网元的类型的相关描述可参考图4所示的实施例，在此不再赘述。
S602、同步骤S406，相关描述可参考图4所示的实施例，在此不再赘述。
S603、PCF网元根据第一I-SMF网元接收PCC规则2的地址信息，向第一I-SMF网元发送PCC规则2，以使得第一I-SMF网元接收来自PCF网元的PCC规则2。
可选的，若请求消息1中还可以携带A-SMF网元的服务区域信息，则本申请实施例提供的PCC规则获取方法还可以包括如下步骤S604-S605：
S604、同步骤S402，相关描述可参考图4所示的实施例，在此不再赘述。
S605、PCF网元向A-SMF网元发送PCC规则1，以使得A-SMF网元接收来自PCF网元的PCC规则1。
上述步骤S600-S605给出了会话建立过程中A-SMF网元获取A-SMF网元对应的应用相关的PCC规则，以及第一I-SMF网元获取第一I-SMF网元对应的应用相关的PCC规则的具体实现。可选的，本申请实施例中，在第一I-SMF网元和A-SMF网元都已经与PCF网元建立了连接之后，若PCF网元接收来自AF网元的请求，或者PCF网元接收到终端的签约变更指示等，则可能需要更新PCC规则，下面以PCF网元接收来自AF网元的请求为例进行说明，则本申请实施例提供的PCC规则获取方法还可以包括如下步骤：
S606、同步骤S408，相关描述可参考图4所示的实施例，在此不再赘述。
S607、同步骤S409，相关描述可参考图4所示的实施例，在此不再赘述。
S608、PCF网元根据第一I-SMF网元接收PCC规则2的地址信息，向第一I-SMF网元发送更新的PCC规则2，以使得第一I-SMF网元接收来自PCF网元的更新的PCC规则2。
其中，相关描述可参考图4所示的实施例中的步骤S410，在此不再赘述。
可选的，本申请实施例中，在第一I-SMF网元和A-SMF网元都已经与PCF网元建立了连接之后，PCF网元也可以根据第一I-SMF网元对应的更新的会话信息进行PCC规则更新。比如，本申请实施例提供的PCC规则获取方法还可以包括如下步骤：
S609、第一I-SMF网元向A-SMF网元发送第一I-SMF网元对应的更新的会话信息，以使得A-SMF网元接收来自第一I-SMF网元的第一I-SMF网元对应的更新的会话信息。
其中，第一I-SMF网元对应的更新的会话信息的相关描述可参考步骤S411，在此不再赘述。
S610、A-SMF网元向PCF网元发送第一I-SMF网元对应的更新的会话信息，以使得PCF网元接收来自A-SMF网元的第一I-SMF网元对应的更新的会话信息。
S611-S613、同步骤412-S414，相关描述可参考图4所示的实施例，在此不再赘述。
可选的，本申请实施例中，在会话建立之后，还可能发生I-SMF网元的***、删除或切换等过程。比如，假设会话建立时只选择了A-SMF网元(由于终端位于A-SMF网元的服务区域)，则当终端移出A-SMF网元的服务区域时需要***第二I-SMF网元；或者，假设会话中已经存在了第一I-SMF网元，则在终端移出第一I-SMF网元的服务区域时，需要进行第一I-SMF网元的切换；或者，假设会话中已经存在了第一I-SMF网元，则当终端从第一I-SMF网元的服务区域移回A-SMF网元的服务区域时，需要删除第一I-SMF网元相关的信息。下面以I-SMF网元的切换为例进行说明：
假设终端移出第一I-SMF网元的服务区域之后，AMF网元为该终端选择了第二I-SMF网元，则本申请实施例提供的PCC规则获取方法还可以包括如下步骤：
S614-S617、与步骤S600-S603类似，区别仅在于：将步骤S600-S603中的第一I-SMF网元替换为第二I-SMF网元；将步骤S600-S603中的请求消息1替换为请求消息4；将步骤S600-S603中的PCC规则2替换为PCC规则5，相关描述可参考步骤S600-S603，在此不再赘述。
可选的，在切换过程中，本申请实施例提供的PCC规则获取方法还可以包括如下步骤：
S618、PCF网元删除该会话对应的第一I-SMF网元相关的信息。
其中，本申请实施例中，PCF网元根据请求消息4可以获知终端移出第一I-SMF网元的 服务区域，从而可以主动删除会话对应的第一I-SMF网元相关的信息。会话对应的第一I-SMF网元相关的信息的描述可参考图4所示的实施例中的步骤S419中的相关描述，在此不再赘述。
可选的，本申请实施例中，删除会话对应的第一I-SMF网元相关的信息的实现方式也可以与S419-S420类似，区别仅在于第一I-SMF网元需要通过A-SMF网元向PCF网元发送删除请求，相关描述可参考步骤S419-S420，在此不再赘述。
在终端移出第一I-SMF网元的服务区域时，删除会话对应的第一I-SMF网元相关的信息，可以节省PCF网元的存储空间，减少资源的浪费。
上述步骤S614-S618给出了第一I-SMF网元切换过程中PCC规则的获取方法。此外，若会话建立过程中只选择了A-SMF网元，则第二I-SMF网元的***过程中PCC规则的获取方法与上述切换过程中PCC规则的获取方法类似，只是可以不用执行步骤S618。假设终端从第一I-SMF网元的服务区域移回A-SMF网元的服务区域，则可以不用执行步骤S614-S617，仅需要执行步骤S618即可，其中，步骤S618可以在A-SMF网元通知PCF网元终端移入A-SMF网元的服务区域之后执行，在此统一说明，以下不再赘述。
此外，需要说明的是，在I-SMF网元的***、切换或者删除或者上述的***过程中，由于终端位置的变化，因此PCF网元都有可能向A-SMF网元发送A-SMF网元相关的PCC规则，本申请实施例对此不作具体限定。
基于本申请实施例提供的PCC规则获取方法，可以大大减少PCF网元与SMF网元之间传输的应用相关的PCC规则的数量，从而可以节省PCF网元与SMF网元之间的传输资源。相关技术效果分析可参考PCC规则获取***部分，在此不再赘述。
其中，上述步骤S600至S618中的PCF网元、第一I-SMF网元、第二I-SMF网元或者A-SMF网元的动作可以由图3所示的通信设备300中的处理器301调用存储器303中存储的应用程序代码来执行，本实施例对此不作任何限制。
可选的，以图1所示的PCC规则获取***应用于如图2所示的5G网络，且会话建立过程中需要第一I-SMF网元为例，如图7所示，为本申请实施例提供的另一种PCC规则获取方法，该PCC规则获取方法相对于如图4所示的PCC规则获取方法的区别主要在于本申请实施例中，I-SMF网元(包括第一I-SMF和第二I-SMF)与PCF网元之间没有接口，二者之间交互的所有消息仅需要经过A-SMF网元。具体的，该PCC规则获取方法包括如下步骤：
S700-S702、与步骤S600-S602类似，区别仅在于本申请实施例中的会话建立请求以及请求消息1中不需要携带第一I-SMF网元接收PCC规则2的地址信息。相关描述可参考图6所示的实施例，在此不再赘述。
可选的，若请求消息1中还可以携带A-SMF网元的服务区域信息，则本申请实施例提供的PCC规则获取方法还可以包括入如下步骤S703：
S703、同步骤S604，相关描述可参考图6所示的实施例，在此不再赘述。
进一步的，本申请实施例提供的PCC规则获取方法还可以包括如下步骤：
S704、PCF网元向A-SMF网元发送响应消息1，以使得A-SMF网元接收来自PCF网元的响应消息1，其中，该响应消息1中携带PCC规则2。
可选的，该响应消息1还可以携带PCC规则1，本申请实施例对此不作具体限定。
其中，在该响应消息1还可以携带PCC规则1的情况下，可选的，该响应消息1还可以携带指示信息，该指示信息用于指示PCC规则1或者PCC规则2中的至少一个。比如，可以指示PCC规则1是发送给A-SMF网元的，指示PCC规则2是发送给第一I-SMF网元的，本申 请实施例对此不作具体限定。
S705、A-SMF网元向第一I-SMF网元发送PCC规则2，以使得第一I-SMF网元接收来自A-SMF网元的PCC规则2。
可选的，若步骤S704中的响应消息1中携带了上述指示信息，则A-SMF网元可以根据上述指示信息确定发送给第一I-SMF网元的PCC规则2。
或者，可选的，若步骤S704中的响应消息1中未携带上述指示信息，则A-SMF网元可以根据第一I-SMF网元的服务区域信息，从PCC规则1和PCC规则2中确定出需要发送给第一I-SMF网元的PCC规则2之后，再向第一I-SMF网元发送PCC规则2。比如，A-SMF网元可以将与第一I-SMF服务的DNAI相关的PCC规则发送给第一I-SMF网元，本申请实施例对此不作具体限定。
上述步骤S700-S705给出了会话建立过程中A-SMF网元获取A-SMF网元对应的应用相关的PCC规则，以及第一I-SMF网元获取第一I-SMF网元对应的应用相关的PCC规则的具体实现。可选的，本申请实施例中，在第一I-SMF网元和A-SMF网元都已经与PCF网元建立了连接之后，若PCF网元接收来自AF网元的请求，或者PCF网元接收到终端的签约变更指示等，则可能需要更新PCC规则，下面以PCF网元接收来自AF网元的请求为例进行说明，则本申请实施例提供的PCC规则获取方法还可以包括如下步骤：
S706、同步骤S606，相关描述可参考图6所示的实施例，在此不再赘述。
假设PCC规则1和PCC规则2均发生了更新，则本申请实施例提供的PCC规则获取方法还包括如下步骤S707-S708：
S707、PCF网元向A-SMF网元发送更新的PCC规则1和更新的PCC规则2，以使得A-SMF网元接收来自PCF网元的更新的PCC规则1和更新的PCC规则2。
S708、A-SMF网元向第一I-SMF网元发送更新的PCC规则2，以使得第一I-SMF网元接收来自A-SMF网元的更新的PCC规则2。
其中，A-SMF网元确定更新的PCC规则2的方式可参考上述A-SMF网元确定PCC规则2的方式，在此不再赘述。
可选的，本申请实施例中，若仅PCC规则1发生了更新，则PCF网元向A-SMF网元发送更新的PCC规则1，以使得A-SMF网元接收来自PCF网元的更新的PCC规则1；或者，若仅PCC规则2发生了更新，则PCF网元向A-SMF网元发送更新的PCC规则2，以使得A-SMF网元接收来自PCF网元的更新的PCC规则2；进而，A-SMF网元向第一I-SMF网元发送更新的PCC规则2，以使得第一I-SMF网元接收来自A-SMF网元的更新的PCC规则2，本申请实施例对此不作具体限定。
可选的，本申请实施例中，在第一I-SMF网元和A-SMF网元都已经与PCF网元建立了连接之后，PCF网元也可以根据第一I-SMF网元对应的更新的会话信息进行PCC规则更新。比如，本申请实施例提供的PCC规则获取方法还可以包括如下步骤：
S709-S711、同S609-S611，相关描述可参考图6所示的实施例，在此不再赘述。
S712、PCF网元向A-SMF网元发送PCC规则3和PCC规则4中的至少一个，以使得A-SMF网元接收来自PCF网元的PCC规则3和PCC规则4中的至少一个。
可选的，本申请实施例中，若A-SMF网元接收到来自PCF网元的PCC规则3，则本申请实施例提供的PCC规则获取方法还可以包括如下步骤S713：
S713、A-SMF网元向第一I-SMF网元发送PCC规则3，以使得第一I-SMF网元接收来自 A-SMF网元的PCC规则3。
其中，A-SMF网元确定PCC规则3的方式可参考上述A-SMF网元确定PCC规则2的方式，在此不再赘述。
可选的，本申请实施例中，在会话建立之后，还可能发生I-SMF网元的***、删除或切换等过程。比如，假设会话建立时只选择了A-SMF网元(由于终端位于A-SMF网元的服务区域)，则当终端移出A-SMF网元的服务区域时需要***第二I-SMF网元；或者，假设会话中已经存在了第一I-SMF网元，则在终端移出第一I-SMF网元的服务区域时，需要进行第一I-SMF网元的切换；或者，假设会话中已经存在了第一I-SMF网元，则当终端从第一I-SMF网元的服务区域移回A-SMF网元的服务区域时，需要删除第一I-SMF网元相关的信息。下面以I-SMF网元的切换为例进行说明：
S714-S716、同步骤S614-S616，相关描述可参考图6所示的实施例，在此不再赘述。
S717、PCF网元向A-SMF网元发送PCC规则5，以使得A-SMF网元接收来自PCF网元的PCC规则5。
S718、A-SMF网元向第一I-SMF网元发送PCC规则5，以使得第一I-SMF网元接收来自A-SMF网元的PCC规则5。
可选的，在切换过程中，本申请实施例提供的PCC规则获取方法还可以包括如下步骤：
S719、同步骤S618，相关描述可参考图6所示的实施例，在此不再赘述。
上述步骤S714-S719给出了第一I-SMF网元切换过程中PCC规则的获取方法。此外，若会话建立过程中只选择了A-SMF网元，则第二I-SMF网元的***过程中PCC规则的获取方法与上述切换过程中PCC规则的获取方法类似，只是可以不用执行步骤S719。假设终端从第一I-SMF网元的服务区域移回A-SMF网元的服务区域，则可以不用执行步骤S714-S718，仅执行步骤S719即可，其中，步骤S719可以在A-SMF网元通知PCF网元终端移入A-SMF网元的服务区域之后执行，在此统一说明，以下不再赘述。
此外，需要说明的是，在I-SMF网元的***、切换或者删除过程中，由于终端位置的变化，因此PCF网元都有可能向A-SMF网元发送A-SMF网元相关的PCC规则，此时，在同时存在I-SMF网元(包括第一I-SMF网元或第二I-SMF网元)相关的PCC规则以及A-SMF网元相关的PCC规则的情况下，确定需要发送给I-SMF网元的PCC规则的方式可参考上述实施例，在此不再赘述。
基于本申请实施例提供的PCC规则获取方法，可以大大减少PCF网元与SMF网元之间传输的应用相关的PCC规则的数量，从而可以节省PCF网元与SMF网元之间的传输资源。相关技术效果分析可参考图4所示的实施例，在此不再赘述。
其中，上述步骤S700至S719中的PCF网元、第一I-SMF网元、第二I-SMF网元或者A-SMF网元的动作可以由图3所示的通信设备300中的处理器301调用存储器303中存储的应用程序代码来执行，本实施例对此不作任何限制。
综上，因此，本申请实施例公开了一种PCC规则获取方法，包括：第一会话管理网元发送第一会话管理网元的服务区域信息，第一会话管理网元的服务区域信息用于确定第一PCC规则，其中，第一PCC规则包括第一会话管理网元对应的应用相关的PCC规则；第一会话管理网元接收第一PCC规则。
作为一种实现，本申请实施例公开的PCC规则获取方法还可以包括：第一会话管理网元发送第一会话管理网元的类型，第一会话管理网元的类型用于确定第一PCC规则，其中，第 一会话管理网元的类型包括锚点会话管理网元或者中间会话管理网元。
作为一种实现，第一会话管理网元可以为锚点会话管理网元或者中间会话管理网元。
作为一种实现，本申请实施例公开的PCC规则获取方法还可以包括：第一会话管理网元接收来自第二会话管理网元的会话相关的会话策略资源标识，会话策略资源标识用于定位会话相关的会话策略资源；第一会话管理网元向策略控制功能网元发送会话策略资源标识。
作为一种实现，本申请实施例公开的PCC规则获取方法还可以包括：第一会话管理网元向策略控制功能网元发送第一会话管理网元所服务的终端的SUPI以及终端的会话对应的会话标识；其中，SUPI和会话标识用于将第一会话管理网元对应的会话相关的会话策略资源与第二会话管理网元对应的会话相关的会话策略资源相关联。
作为一种实现，本申请实施例公开的PCC规则获取方法还可以包括：第一会话管理网元接收来自第二会话管理网元的策略控制功能网元的信息，策略控制功能网元的信息用于第一会话管理网元选择策略控制功能网元。
作为一种实现，在第一会话管理网元向策略控制功能网元发送第一会话管理网元的服务区域信息之前，本申请实施例公开的PCC规则获取方法还可以包括：第一会话管理网元向绑定支持功能网元发送查询消息，查询消息携带第一会话管理网元所服务的终端的会话对应的会话标识，会话标识用于选择策略控制功能网元；第一会话管理网元接收来自绑定支持功能网元的查询响应，查询响应携带策略控制功能网元的信息。
作为一种实现，第一会话管理网元为中间会话管理网元；相应的，第一会话管理网元发送第一会话管理网元的服务区域信息，包括：第一会话管理网元向第二会话管理网元发送第一会话管理网元的服务区域信息以及第一会话管理网元接收第一PCC规则的地址信息，由第二会话管理网元向策略控制功能网元发送第一会话管理网元的服务区域信息以及第一会话管理网元接收第一PCC规则的地址信息，其中，第二会话管理网元为锚点会话管理网元；第一会话管理网元接收第一PCC规则，包括：第一会话管理网元接收来自策略控制功能网元的第一PCC规则。
上述PCC规则获取方法中，例如，第一会话管理网元的操作可参考图4、图6或者图7中第一I-SMF网元、第二I-SMF网元或者A-SMF网元的操作及上述相关文字说明，在此不再赘述。
此外，本申请实施例还公开了一种业务服务质量的检测方法，包括：策略控制功能网元接收第一会话管理网元的服务区域信息；策略控制功能网元根据第一会话管理网元的服务区域信息，确定第一PCC规则，其中，第一PCC规则包括第一会话管理网元对应的应用相关的PCC规则；策略控制功能网元发送第一PCC规则。
作为一种实现，本申请实施例公开的PCC规则获取方法还可以包括：策略控制功能网元接收第一会话管理网元的类型，其中，第一会话管理网元的类型包括锚点会话管理网元或者中间会话管理网元；相应的，策略控制功能网元根据第一会话管理网元的服务区域信息，确定第一PCC规则，包括：策略控制功能网元根据第一会话管理网元的服务区域信息和第一会话管理网元的类型，确定第一PCC规则。
作为一种实现，本申请实施例公开的PCC规则获取方法还可以包括：策略控制功能网元向第二会话管理网元发送会话相关的会话策略资源标识，由第二会话管理网元向第一会话管理网元发送会话策略资源标识；策略控制功能网元接收来自第一会话管理网元的会话策略资源标识，其中，会话策略资源标识用于定位会话相关的会话策略资源。
作为一种实现，本申请实施例公开的PCC规则获取方法还可以包括：策略控制功能网元接收来自第一会话管理网元的第一会话管理网元所服务的终端的签约永久标识SUPI以及终端的会话对应的会话标识；其中，SUPI和会话标识用于将第一会话管理网元对应的会话相关的会话策略资源与第二会话管理网元对应的会话相关的会话策略资源相关联。
作为一种实现，本申请实施例公开的PCC规则获取方法还可以包括：策略控制功能网元接收来自第一会话管理网元的第一会话管理网元所服务的终端的会话对应的会话标识；策略控制功能网元将会话标识注册到绑定支持功能网元。
作为一种实现，第一会话管理网元为中间会话管理网元；本申请实施例公开的PCC规则获取方法还可以包括：策略控制功能网元接收第一会话管理网元对应的更新的会话信息；策略控制功能网元根据更新的会话信息，确定第三PCC规则和第四PCC规则中的至少一个，其中，第三PCC规则包括第一会话管理网元对应的本地会话策略，第四PCC规则包括第二会话管理网元对应的本地会话策略，其中，第二会话管理网元为锚点会话管理网元；策略控制功能网元发送第三PCC规则和第四PCC规则中的至少一个。
上述PCC规则获取方法中，例如，策略控制功能网元的操作可参考图4、图6或者图7中PCF网元的操作及上述相关文字说明，在此不再赘述。
上述主要从各个网元之间交互的角度对本申请实施例提供的方案进行了介绍。可以理解的是，上述第一会话管理网元或者策略控制功能网元为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法示例对第一会话管理网元或者策略控制功能网元进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
比如，以采用集成的方式划分各个功能模块的情况下，图8示出了一种第一会话管理网元80的结构示意图。该第一会话管理网元80包括：发送模块801和接收模块802。其中，发送模块801，用于发送第一会话管理网元80的服务区域信息，第一会话管理网元80的服务区域信息用于确定第一PCC规则，其中，第一PCC规则包括第一会话管理网元80对应的应用相关的PCC规则；接收模块802，用于接收第一PCC规则。
可选的，发送模块801，还用于发送第一会话管理网元80的类型，第一会话管理网元80的类型用于确定第一PCC规则，其中，第一会话管理网元80的类型包括锚点会话管理网元或者中间会话管理网元。
可选的，接收模块802，还用于接收来自第二会话管理网元的会话相关的会话策略资源标识，会话策略资源标识用于定位会话相关的会话策略资源；发送模块801，还用于向策略控制功能网元发送会话策略资源标识。
可选的，发送模块801，还用于向策略控制功能网元发送第一会话管理网元80所服务的终端的SUPI以及终端的会话对应的会话标识；其中，SUPI和会话标识用于将第一会话管 理网元80对应的会话相关的会话策略资源与第二会话管理网元对应的会话相关的会话策略资源相关联。
可选的，接收模块802，还用于接收来自第二会话管理网元的策略控制功能网元的信息，策略控制功能网元的信息用于第一会话管理网元80选择策略控制功能网元。
可选的，发送模块801，还用于向绑定支持功能网元发送查询消息，查询消息携带第一会话管理网元80所服务的终端的会话对应的会话标识，会话标识用于选择策略控制功能网元；接收模块802，还用于接收来自绑定支持功能网元的查询响应，查询响应携带策略控制功能网元的信息。
可选的，第一会话管理网元80为中间会话管理网元；相应的，发送模块801用于发送第一会话管理网元80的服务区域信息，包括：用于向第二会话管理网元发送第一会话管理网元80的服务区域信息以及第一会话管理网元80接收第一PCC规则的地址信息，由第二会话管理网元向策略控制功能网元发送第一会话管理网元80的服务区域信息以及第一会话管理网元80接收第一PCC规则的地址信息，其中，第二会话管理网元为锚点会话管理网元；接收模块802用于接收第一PCC规则，包括：用于接收来自策略控制功能网元的第一PCC规则。
其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在本实施例中，该第一会话管理网元80以采用集成的方式划分各个功能模块的形式来呈现。这里的“模块”可以指特定ASIC，电路，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。在一个简单的实施例中，本领域的技术人员可以想到该第一会话管理网元80可以采用图3所示的形式。
比如，图3中的处理器301可以通过调用存储器303中存储的计算机执行指令，使得第一会话管理网元80执行上述方法实施例中的PCC规则获取方法。
具体的，图8中的接收模块802和发送模块801的功能/实现过程可以通过图3中的处理器301调用存储器303中存储的计算机执行指令来实现。或者，图8中的接收模块802和发送模块801的功能/实现过程可以通过图3中的通信接口304来实现。
由于本实施例提供的第一会话管理网元可执行上述的PCC规则获取方法，因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
可选的，本申请实施例还提供了一种芯片***，该芯片***包括处理器，用于支持第一会话管理网元实现上述PCC规则获取方法，例如获取第一会话管理网元的服务区域信息。在一种可能的设计中，该芯片***还包括存储器。该存储器，用于保存第一会话管理网元必要的程序指令和数据。当然，存储器也可以不在芯片***中。该芯片***，可以由芯片构成，也可以包含芯片和其他分立器件，本申请实施例对此不作具体限定。
或者，比如，以采用集成的方式划分各个功能模块的情况下，图9示出了一种策略控制功能网元90的结构示意图。该策略控制功能网元90包括：收发模块901和处理模块902。其中，收发模块901，用于接收第一会话管理网元的服务区域信息；处理模块902，用于根据第一会话管理网元的服务区域信息，确定第一PCC规则，其中，第一PCC规则包括第一会话管理网元对应的应用相关的PCC规则；收发模块901，还用于发送第一PCC规则。
可选的，收发模块901，还用于接收第一会话管理网元的类型，其中，第一会话管理网元的类型包括锚点会话管理网元或者中间会话管理网元；相应的，处理模块902具体用于：根据第一会话管理网元的服务区域信息和第一会话管理网元的类型，确定第一PCC规则。
可选的，收发模块901，还用于向第二会话管理网元发送会话相关的会话策略资源标识，由第二会话管理网元向第一会话管理网元发送会话策略资源标识；收发模块901，还用于接收来自第一会话管理网元的会话策略资源标识，其中，会话策略资源标识用于定位会话相关的会话策略资源。
可选的，收发模块901，还用于接收来自第一会话管理网元的第一会话管理网元所服务的终端的签约永久标识SUPI以及终端的会话对应的会话标识；其中，SUPI和会话标识用于将第一会话管理网元对应的会话相关的会话策略资源与第二会话管理网元对应的会话相关的会话策略资源相关联。
可选的，收发模块901，还用于接收来自第一会话管理网元的第一会话管理网元所服务的终端的会话对应的会话标识；处理模块902，还用于将会话标识注册到绑定支持功能网元。
可选的，第一会话管理网元为中间会话管理网元；收发模块901，还用于接收第一会话管理网元对应的更新的会话信息；处理模块902，还用于根据更新的会话信息，确定第三PCC规则和第四PCC规则中的至少一个，其中，第三PCC规则包括第一会话管理网元对应的本地会话策略，第四PCC规则包括第二会话管理网元对应的本地会话策略，其中，第二会话管理网元为锚点会话管理网元；收发模块901，还用于发送第三PCC规则和第四PCC规则中的至少一个。
其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在本实施例中，该策略控制功能网元90以采用集成的方式划分各个功能模块的形式来呈现。这里的“模块”可以指特定ASIC，电路，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。在一个简单的实施例中，本领域的技术人员可以想到该策略控制功能网元90可以采用图3所示的形式。
比如，图3中的处理器301可以通过调用存储器303中存储的计算机执行指令，使得策略控制功能网元90执行上述方法实施例中的PCC规则获取方法。
具体的，图9中的收发模块901和处理模块902的功能/实现过程可以通过图3中的处理器301调用存储器303中存储的计算机执行指令来实现。或者，图9中的处理模块902的功能/实现过程可以通过图3中的处理器301调用存储器303中存储的计算机执行指令来实现，图9中的收发模块901的功能/实现过程可以通过图3中的通信接口304来实现。
由于本实施例提供的策略控制功能网元可执行上述的PCC规则获取方法，因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
可选的，本申请实施例还提供了一种芯片***，该芯片***包括处理器，用于支持策略控制功能网元实现上述PCC规则获取方法，例如根据第一会话管理网元的服务区域信息，确定第一PCC规则。在一种可能的设计中，该芯片***还包括存储器。该存储器，用于保存策略控制功能网元必要的程序指令和数据。当然，存储器也可以不在芯片***中。该芯片***，可以由芯片构成，也可以包含芯片和其他分立器件，本申请实施例对此不作具体限定。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件程序实现时，可以全部或部分地以计算机程序产品的形式来实现。该计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从 一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或者数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可以用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)，光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。
尽管在此结合各实施例对本申请进行了描述，然而，在实施所要求保护的本申请过程中，本领域技术人员通过查看所述附图、公开内容、以及所附权利要求书，可理解并实现所述公开实施例的其他变化。在权利要求中，“包括”(comprising)一词不排除其他组成部分或步骤，“一”或“一个”不排除多个的情况。单个处理器或其他单元可以实现权利要求中列举的若干项功能。相互不同的从属权利要求中记载了某些措施，但这并不表示这些措施不能组合起来产生良好的效果。
尽管结合具体特征及其实施例对本申请进行了描述，显而易见的，在不脱离本申请的精神和范围的情况下，可对其进行各种修改和组合。相应地，本说明书和附图仅仅是所附权利要求所界定的本申请的示例性说明，且视为已覆盖本申请范围内的任意和所有修改、变化、组合或等同物。显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (37)

  1. 一种策略和计费控制PCC规则获取方法，其特征在于，所述方法包括：
    第一会话管理网元发送所述第一会话管理网元的服务区域信息，所述第一会话管理网元的服务区域信息用于确定第一PCC规则，其中，所述第一PCC规则包括所述第一会话管理网元对应的应用相关的PCC规则；
    所述第一会话管理网元接收所述第一PCC规则。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述第一会话管理网元发送所述第一会话管理网元的类型，所述第一会话管理网元的类型用于确定所述第一PCC规则，其中，所述第一会话管理网元的类型包括锚点会话管理网元或者中间会话管理网元。
  3. 根据权利要求1或2所述的方法，其特征在于，所述第一会话管理网元为锚点会话管理网元或者中间会话管理网元。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，所述方法还包括：
    所述第一会话管理网元接收来自第二会话管理网元的会话相关的会话策略资源标识，所述会话策略资源标识用于定位所述会话相关的会话策略资源；
    所述第一会话管理网元向策略控制功能网元发送所述会话策略资源标识。
  5. 根据权利要求1-3任一项所述的方法，其特征在于，所述方法还包括：
    所述第一会话管理网元向策略控制功能网元发送所述第一会话管理网元所服务的终端的签约永久标识SUPI以及所述终端的会话对应的会话标识；其中，所述SUPI和所述会话标识用于将所述第一会话管理网元对应的所述会话相关的会话策略资源与第二会话管理网元对应的所述会话相关的会话策略资源相关联。
  6. 根据权利要求1-5任一项所述的方法，其特征在于，所述方法还包括：
    所述第一会话管理网元接收来自第二会话管理网元的所述策略控制功能网元的信息，所述策略控制功能网元的信息用于所述第一会话管理网元选择所述策略控制功能网元。
  7. 根据权利要求1-6任一项所述的方法，其特征在于，在所述第一会话管理网元向策略控制功能网元发送所述第一会话管理网元的服务区域信息之前，所述方法还包括：
    所述第一会话管理网元向绑定支持功能网元发送查询消息，所述查询消息携带所述第一会话管理网元所服务的终端的会话对应的会话标识，所述会话标识用于选择所述策略控制功能网元；
    所述第一会话管理网元接收来自所述绑定支持功能网元的查询响应，所述查询响应携带所述策略控制功能网元的信息。
  8. 根据权利要求1或2所述的方法，其特征在于，所述第一会话管理网元为中间会话管理网元；
    相应的，所述第一会话管理网元发送所述第一会话管理网元的服务区域信息，包括：
    所述第一会话管理网元向第二会话管理网元发送所述第一会话管理网元的服务区域信息以及所述第一会话管理网元接收所述第一PCC规则的地址信息，由所述第二会话管理网元向策略控制功能网元发送所述第一会话管理网元的服务区域信息以及所述第一会话管理网元接收所述第一PCC规则的地址信息，其中，所述第二会话管理网元为锚点会话管理网元；
    所述第一会话管理网元接收所述第一PCC规则，包括：
    所述第一会话管理网元接收来自所述策略控制功能网元的所述第一PCC规则。
  9. 根据权利要求1-8任一项所述的方法，其特征在于，所述服务区域信息包括所服务的数据网络接入标识DNAI列表、或者所服务的区域的标识信息、或者所服务的终端的位置信息。
  10. 一种策略和计费控制PCC规则获取方法，其特征在于，所述方法包括：
    策略控制功能网元接收第一会话管理网元的服务区域信息；
    所述策略控制功能网元根据所述第一会话管理网元的服务区域信息，确定第一PCC规则，其中，所述第一PCC规则包括所述第一会话管理网元对应的应用相关的PCC规则；
    所述策略控制功能网元发送所述第一PCC规则。
  11. 根据权利要求10所述的方法，其特征在于，所述方法还包括：
    所述策略控制功能网元接收所述第一会话管理网元的类型，其中，所述第一会话管理网元的类型包括锚点会话管理网元或者中间会话管理网元；
    相应的，所述策略控制功能网元根据所述第一会话管理网元的服务区域信息，确定第一PCC规则，包括：
    所述策略控制功能网元根据所述第一会话管理网元的服务区域信息和所述第一会话管理网元的类型，确定所述第一PCC规则。
  12. 根据权利要求10或11所述的方法，其特征在于，所述方法还包括：
    所述策略控制功能网元向第二会话管理网元发送会话相关的会话策略资源标识，由所述第二会话管理网元向所述第一会话管理网元发送所述会话策略资源标识；
    所述策略控制功能网元接收来自所述第一会话管理网元的所述会话策略资源标识，其中，所述会话策略资源标识用于定位所述会话相关的会话策略资源。
  13. 根据权利要求10或11所述的方法，其特征在于，所述方法还包括：
    所述策略控制功能网元接收来自所述第一会话管理网元的所述第一会话管理网元所服务的终端的签约永久标识SUPI以及所述终端的会话对应的会话标识；其中，所述SUPI和所述会话标识用于将所述第一会话管理网元对应的所述会话相关的会话策略资源与第二会话管理网元对应的所述会话相关的会话策略资源相关联。
  14. 根据权利要求10或11所述的方法，其特征在于，所述方法还包括：
    所述策略控制功能网元接收来自所述第一会话管理网元的所述第一会话管理网元所服务的终端的会话对应的会话标识；
    所述策略控制功能网元将所述会话标识注册到绑定支持功能网元。
  15. 根据权利要求10-14任一项所述的方法，其特征在于，所述第一会话管理网元为中间会话管理网元；所述方法还包括：
    所述策略控制功能网元接收所述第一会话管理网元对应的更新的会话信息；
    所述策略控制功能网元根据所述更新的会话信息，确定第三PCC规则和第四PCC规则中的至少一个，其中，所述第三PCC规则包括所述第一会话管理网元对应的本地会话策略，所述第四PCC规则包括第二会话管理网元对应的本地会话策略，其中，所述第二会话管理网元为锚点会话管理网元；
    所述策略控制功能网元发送所述第三PCC规则和所述第四PCC规则中的至少一个。
  16. 一种第一会话管理网元，其特征在于，所述第一会话管理网元包括：发送模块和接收模块；
    所述发送模块，用于发送所述第一会话管理网元的服务区域信息，所述第一会话管理网 元的服务区域信息用于确定第一策略和计费控制PCC规则，其中，所述第一PCC规则包括所述第一会话管理网元对应的应用相关的PCC规则；
    所述接收模块，用于接收所述第一PCC规则。
  17. 根据权利要求16所述的第一会话管理网元，其特征在于，
    所述发送模块，还用于发送所述第一会话管理网元的类型，所述第一会话管理网元的类型用于确定所述第一PCC规则，其中，所述第一会话管理网元的类型包括锚点会话管理网元或者中间会话管理网元。
  18. 根据权利要求16或17所述的第一会话管理网元，其特征在于，
    所述接收模块，还用于接收来自第二会话管理网元的会话相关的会话策略资源标识，所述会话策略资源标识用于定位所述会话相关的会话策略资源；
    所述发送模块，还用于向策略控制功能网元发送所述会话策略资源标识。
  19. 根据权利要求16或17所述的第一会话管理网元，其特征在于，
    所述发送模块，还用于向策略控制功能网元发送所述第一会话管理网元所服务的终端的签约永久标识SUPI以及所述终端的会话对应的会话标识；其中，所述SUPI和所述会话标识用于将所述第一会话管理网元对应的所述会话相关的会话策略资源与第二会话管理网元对应的所述会话相关的会话策略资源相关联。
  20. 根据权利要求16-19任一项所述的第一会话管理网元，其特征在于，
    所述接收模块，还用于接收来自第二会话管理网元的所述策略控制功能网元的信息，所述策略控制功能网元的信息用于所述第一会话管理网元选择所述策略控制功能网元。
  21. 根据权利要求16-20任一项所述的第一会话管理网元，其特征在于，
    所述发送模块，还用于向绑定支持功能网元发送查询消息，所述查询消息携带所述第一会话管理网元所服务的终端的会话对应的会话标识，所述会话标识用于选择所述策略控制功能网元；
    所述接收模块，还用于接收来自所述绑定支持功能网元的查询响应，所述查询响应携带所述策略控制功能网元的信息。
  22. 根据权利要求16或17所述的第一会话管理网元，其特征在于，所述第一会话管理网元为中间会话管理网元；
    相应的，所述发送模块用于发送所述第一会话管理网元的服务区域信息，包括：用于向第二会话管理网元发送所述第一会话管理网元的服务区域信息以及所述第一会话管理网元接收所述第一PCC规则的地址信息，由所述第二会话管理网元向策略控制功能网元发送所述第一会话管理网元的服务区域信息以及所述第一会话管理网元接收所述第一PCC规则的地址信息，其中，所述第二会话管理网元为锚点会话管理网元；
    所述接收模块用于接收所述第一PCC规则，包括：用于接收来自所述策略控制功能网元的所述第一PCC规则。
  23. 一种策略控制功能网元，其特征在于，所述策略控制功能网元包括：收发模块和处理模块；
    所述收发模块，用于接收第一会话管理网元的服务区域信息；
    所述处理模块，用于根据所述第一会话管理网元的服务区域信息，确定第一策略和计费控制PCC规则，其中，所述第一PCC规则包括所述第一会话管理网元对应的应用相关的PCC规则；
    所述收发模块，还用于发送所述第一PCC规则。
  24. 根据权利要求23所述的策略控制功能网元，其特征在于，
    所述收发模块，还用于接收所述第一会话管理网元的类型，其中，所述第一会话管理网元的类型包括锚点会话管理网元或者中间会话管理网元；
    相应的，所述处理模块具体用于：根据所述第一会话管理网元的服务区域信息和所述第一会话管理网元的类型，确定所述第一PCC规则。
  25. 根据权利要求23或24所述的策略控制功能网元，其特征在于，
    所述收发模块，还用于向第二会话管理网元发送会话相关的会话策略资源标识，由所述第二会话管理网元向所述第一会话管理网元发送所述会话策略资源标识；
    所述收发模块，还用于接收来自所述第一会话管理网元的所述会话策略资源标识，其中，所述会话策略资源标识用于定位所述会话相关的会话策略资源。
  26. 根据权利要求23或24所述的策略控制功能网元，其特征在于，
    所述收发模块，还用于接收来自所述第一会话管理网元的所述第一会话管理网元所服务的终端的签约永久标识SUPI以及所述终端的会话对应的会话标识；其中，所述SUPI和所述会话标识用于将所述第一会话管理网元对应的所述会话相关的会话策略资源与第二会话管理网元对应的所述会话相关的会话策略资源相关联。
  27. 根据权利要求23或24所述的策略控制功能网元，其特征在于，
    所述收发模块，还用于接收来自所述第一会话管理网元的所述第一会话管理网元所服务的终端的会话对应的会话标识；
    所述处理模块，还用于将所述会话标识注册到绑定支持功能网元。
  28. 根据权利要求23-27任一项所述的策略控制功能网元，其特征在于，所述第一会话管理网元为中间会话管理网元；
    所述收发模块，还用于接收所述第一会话管理网元对应的更新的会话信息；
    所述处理模块，还用于根据所述更新的会话信息，确定第三PCC规则和第四PCC规则中的至少一个，其中，所述第三PCC规则包括所述第一会话管理网元对应的本地会话策略，所述第四PCC规则包括第二会话管理网元对应的本地会话策略，其中，所述第二会话管理网元为锚点会话管理网元；
    所述收发模块，还用于发送所述第三PCC规则和所述第四PCC规则中的至少一个。
  29. 一种策略和计费控制PCC规则获取***，其特征在于，PCC规则获取***包括：第一会话管理网元和策略控制功能网元；
    所述第一会话管理网元，用于发送所述第一会话管理网元的服务区域信息；
    所述策略控制功能网元，用于接收所述第一会话管理网元的服务区域信息，并根据所述第一会话管理网元的服务区域信息，确定第一PCC规则，其中，所述第一PCC规则包括所述第一会话管理网元对应的应用相关的PCC规则；
    所述策略控制功能网元，还用于发送所述第一PCC规则；
    所述第一会话管理网元，还用于接收所述第一PCC规则。
  30. 根据权利要求29所述的PCC规则获取***，其特征在于，所述第一会话管理网元为中间会话管理网元；所述PCC规则获取***还包括第二会话管理网元，所述第二会话管理网元为锚点会话管理网元；
    所述第一会话管理网元，用于发送所述第一会话管理网元的服务区域信息，包括：用于 向所述第二会话管理网元发送所述第一会话管理网元的服务区域信息以及所述第一会话管理网元接收所述第一PCC规则的地址信息；
    所述第二会话管理网元，用于接收来自所述第一会话管理网元的所述第一会话管理网元的服务区域信息以及所述第一会话管理网元接收所述第一PCC规则的地址信息，并向所述策略控制功能网元发送第一请求消息，所述第一请求消息携带所述第一会话管理网元的服务区域信息以及所述第一会话管理网元接收所述第一PCC规则的地址信息；
    所述策略控制功能网元，用于接收所述第一会话管理网元的服务区域信息，包括：用于接收来自所述第二会话管理网元的所述第一请求消息；
    所述策略控制功能网元，用于发送所述第一PCC规则，包括：用于根据所述第一会话管理网元接收所述第一PCC规则的地址信息，向所述第一会话管理网元发送所述第一PCC规则；
    所述第一会话管理网元，还用于接收所述第一PCC规则，包括：用于接收来自所述策略控制功能网元的所述第一PCC规则。
  31. 根据权利要求29所述的PCC规则获取***，其特征在于，所述第一会话管理网元为中间会话管理网元；所述PCC规则获取***还包括第二会话管理网元，所述第二会话管理网元为锚点会话管理网元；
    所述第一会话管理网元，用于发送所述第一会话管理网元的服务区域信息，包括：用于向所述第二会话管理网元发送所述第一会话管理网元的服务区域信息；
    所述第二会话管理网元，用于接收来自所述第一会话管理网元的所述第一会话管理网元的服务区域信息，并向所述策略控制功能网元发送第二请求消息，所述第二请求消息携带所述第一会话管理网元的服务区域信息；
    所述策略控制功能网元，用于接收所述第一会话管理网元的服务区域信息，包括：用于接收来自所述第二会话管理网元的所述第二请求消息；
    所述策略控制功能网元，用于发送所述第一PCC规则，包括：用于向所述第二会话管理网元发送响应消息，所述响应消息携带所述第一PCC规则；
    所述第二会话管理网元，还用于接收来自所述策略控制功能网元的所述响应消息，并向所述第一会话管理网元发送所述第一PCC规则；
    所述第一会话管理网元，还用于接收所述第一PCC规则，包括：用于接收来自所述第二会话管理网元的所述第一PCC规则。
  32. 一种第一会话管理网元，其特征在于，包括：处理器和存储器；所述存储器用于存储计算机执行指令，当所述第一会话管理网元运行时，所述处理器执行所述存储器存储的所述计算机执行指令，以使所述第一会话管理网元执行如权利要求1-9任一项所述的策略和计费控制规则获取方法。
  33. 一种处理器，其特征在于，用于执行如权利要求1-9任一项所述的策略和计费控制规则获取方法。
  34. 一种策略控制功能网元，其特征在于，包括：处理器和存储器；所述存储器用于存储计算机执行指令，当所述策略控制功能网元运行时，所述处理器执行所述存储器存储的所述计算机执行指令，以使所述策略控制功能网元执行如权利要求10-15任一项所述的策略和计费控制规则获取方法。
  35. 一种处理器，其特征在于，用于执行如权利要求10-15任一项所述的策略和计费控制规则获取方法。
  36. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机可以执行如权利要求1-9任一项，或权利要求10-15任一项所述的策略和计费控制规则获取方法。
  37. 一种计算机程序产品，其特征在于，所述计算机程序产品中存储有指令，当其在计算机上运行时，使得计算机可以执行如权利要求1-9任一项，或10-15任一项所述的策略和计费控制规则获取方法。
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