WO2016173364A1 - 策略规则制定方法、系统及装置 - Google Patents

策略规则制定方法、系统及装置 Download PDF

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Publication number
WO2016173364A1
WO2016173364A1 PCT/CN2016/077903 CN2016077903W WO2016173364A1 WO 2016173364 A1 WO2016173364 A1 WO 2016173364A1 CN 2016077903 W CN2016077903 W CN 2016077903W WO 2016173364 A1 WO2016173364 A1 WO 2016173364A1
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Prior art keywords
private network
address
port number
source port
description information
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PCT/CN2016/077903
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English (en)
French (fr)
Inventor
周晓云
吴锦花
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中兴通讯股份有限公司
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Publication of WO2016173364A1 publication Critical patent/WO2016173364A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/24—Accounting or billing

Definitions

  • the present invention relates to the field of communications, and in particular to a method, system and apparatus for formulating policy rules.
  • FIG. 1 is a schematic diagram of a PCC architecture according to the related art. As shown in FIG. 1, FIG. 1 is a policy and charging control architecture defined by a 3rd Generation Partnership Project (3GPP). Referred to as PCC).
  • 3GPP 3rd Generation Partnership Project
  • PCRF Policy and Charging Rules Function
  • QoS Quality of Service
  • SPR Subscription Profile Repository
  • PCRF Policy and Charging Rules Function
  • the PCRF needs to combine the service information received from the Application Function (AF), the user subscription information received from the Subscription Profile Repository (SPR), and the policy configured by the operator.
  • the PCRF sends the control policy for the service to the Policy and Charging Enforcement Function (PCEF) or the Bearer Binding and Event Report Function (BBERF).
  • PCEF Policy and Charging Enforcement Function
  • BBERF Bearer Binding and Event Report Function
  • the PCRF can subscribe to the bearer layer related events to the PCEF and/or the BBERF to sense in time when the bearer layer occurs, and change the control strategy.
  • the PCEF and the Traffic Detection Function (TDF) can perform application detection and control functions according to the PCC rules (PCEF) or Application Detection Control (ADC) rules (TDF) delivered by the PCRF. .
  • FIG. 2 is a schematic diagram of a PCC architecture of Application Access Control (AAC) according to the related art.
  • AAC Application Access Control
  • FIG. 2 the Diameter protocol adopted by the RX interface supported by the PCC is currently used for most third-party data.
  • the industry research PCC architecture supports the Rx interface based on the SOAP/REST protocol.
  • a logic function called Protocol Converter (PC) is directly set in the PCRF and AF, and is set to convert the SOAP or REST protocol into a Diameter.
  • PC Protocol Converter
  • some access control functions may be added to the PC to better implement the access control of the third-party data application by the operator.
  • the logic function is also referred to as an AAC functional entity.
  • FIG. 3 is a schematic diagram of a PCC architecture of a NAT according to the related art.
  • PDN Packet Data Network Gateway, P-GW for short.
  • NAT Network Address Translation
  • the same PDN connection carries the private IP address and port number used inside the Evolved Packet Core (EPC), which is different from the public IP address and port number used in the external packet network.
  • EPC Evolved Packet Core
  • the service information that the AF provides to the PCRF to set the PCC rule is based on the transformed IP address in the external packet network. Address and port number.
  • the PCRF cannot associate the AF session with the IP-connectivity access network (IP-CAN) based on the public IP address provided by the AF and the private IP address provided by the PCEF.
  • IP-CAN IP-connectivity access network
  • the PCRF creates a filter template in the PCC rule based on the external IP address and port number and provides it to the PCEF or BBERF for execution.
  • the PCEF or BBERF will not be able to match the correct data stream.
  • the NAT sends the address translation mapping table to the PCRF, and the PCRF can find the corresponding private network IP address and port number according to the mapping table and the information provided by the AF.
  • this scheme requires an interworking mechanism between NAT and PCRF, which has a great impact on the existing network.
  • the P-GW inserts the private network IP address of the UE in the header of the packet data packet sent by the UE, and the AF provides the private information of the UE when providing the service information to the PCRF.
  • the network IP address so that the PCRF can perform session association according to the private network IP address.
  • the current mechanism can only be bound to the session. Because the PCRF cannot obtain the private network source port number of the service, the UE may not be able to perform correct resource reservation and resource control for multiple service access initiated by one service at the same time. For example, the UE initiates two HTTP service requests to the same service at the same time.
  • the private network IP addresses of the service data flows of the two services are the same as the server IP addresses and server port numbers.
  • the PCRF cannot deliver the correct PCC rules for resource reservation and control for two simultaneous service accesses.
  • the invention provides a method, a system and a device for formulating a policy rule to solve at least the problem that the user terminal may not perform correct resource reservation and resource control for multiple service access initiated by a user terminal simultaneously for one service.
  • a method for formulating a policy rule including:
  • the protocol converter PC or the application access control AAC receives the private network IP address, the private network source port number, and the first flow description information of the user equipment UE that is sent by the application function AF, and the PC or the AAC describes the first flow description information.
  • the source address is modified to the private network IP address, and the source port number in the first flow description information is changed to the private network source port number to generate second flow description information.
  • the PC or the AAC sends the second flow description information to the policy and charging rule function PCRF, so that the PCRF formulates a first PCC rule according to the second flow description information.
  • the method further comprises:
  • the source address of the first flow description information is a public network IP address converted by a network address translation function, and the source port number is a public network source port number after NAT conversion.
  • the protocol converter PC or the application access control AAC receives the private network IP address, the private network source port number, and the first flow description information of the user equipment UE sent by the application function AF, and the AF acquisition center
  • the manner of describing the private network IP address and the private network source port number includes one of the following:
  • the application detection function inserts the private network IP address of the UE and the private network source port number in the data packet according to the indication in the service detection rule delivered by the PCRF, and the AF obtains the information from the data packet.
  • Private network IP address and the private network source port number or,
  • the UE inserts the private network IP address and the private network source port number in the data packet, and the AF obtains the private network IP address and the private network source port number from the data packet.
  • the application detecting function inserts the private network IP address and the private network source port number of the UE in the data packet according to the indication in the service detection rule delivered by the PCRF, and includes one of the following:
  • the application detection function is a policy charging execution function PCEF
  • the PCRF carries an insertion indication in a PCC rule provided to the PCEF, and when the PCEF detects the data packet according to the PCC rule, Inserting, in the data packet, the private network IP address of the UE and the private network source port number; or
  • the PCRF carries an insertion indication in an application detection control ADC rule provided to the TDF, when the TDF detects the data packet according to the ADC rule, Inserting a private network IP address and a private network source port number of the UE in the data packet.
  • a method for formulating a policy rule which includes:
  • the PCRF receives the private network IP address, the private network source port number, and the third stream description information of the user equipment UE that is sent by the AF.
  • the PCRF generates a second PCC rule according to the private network IP address, the private network source port number, and the third flow description information, where the service data filter in the second PCC rule is generated by: And modifying the source address in the third flow description information to the private network IP address, and modifying the source port number to the private network source port number.
  • the method further comprises:
  • the source address of the third stream description information is a public network IP address converted by a network address translation function, and the source port number is a public network source port number after NAT conversion.
  • the PCRF obtains the private network IP address and the private network source port number before receiving the private network IP address, the private network source port number, and the third stream description information of the user equipment UE that is sent by the AF.
  • the way includes one of the following:
  • the application detection function inserts the private network IP address of the UE and the private network source port number in the data packet according to the indication in the service detection rule delivered by the PCRF, and the AF obtains the information from the data packet.
  • Private network IP address and the private network source port number or,
  • the UE inserts the private network IP address and the private network source port number in the data packet, and the AF obtains the private network IP address and the private network source port number from the data packet.
  • the application detecting function inserts the private network IP address and the private network source port number of the UE in the data packet according to the indication in the service detection rule delivered by the PCRF, and includes one of the following:
  • the PCRF carries an insertion indication in a PCC rule provided to the PCEF, and when the PCEF detects the data packet according to the PCC rule, in the data packet. Inserting the UE The private network IP address and the private network source port number; or,
  • the PCRF carries an insertion indication in an ADC rule provided by the TDF, and inserts in the data packet when the TDF detects the data packet according to the ADC rule.
  • a method for formulating a policy rule which includes:
  • the PCRF receives the fifth flow description information, where the AF obtains the private network IP address, the private network source port number, and the fourth flow description information from the data packet, and the AF modifies the source address in the fourth flow description information to The private network IP address, the source port number in the fourth flow description information is modified to the private network source port number, and the fifth flow description information is generated;
  • the PCRF formulates a third PCC rule according to the fifth stream description information.
  • the method further comprises:
  • the source address of the fourth stream description information is a public network IP address converted by a network address translation function, and the source port number is a public network source port number after NAT conversion.
  • the manner in which the AF obtains the private network IP address, the private network source port number, and the fourth stream description information from the data packet includes one of the following:
  • the application detecting function inserts the private network IP address of the UE and the private network source port number in the data packet according to an indication in a service detection rule that is sent by the PCRF, where the AF is from the data packet. Obtaining the private network IP address and the private network source port number; or
  • the UE inserts the private network IP address and the private network source port number in the data packet, and the AF obtains the private network IP address and the private network source port number from the data packet.
  • the application detection function inserts the private network IP address of the UE and the private network source port in a data packet according to an indication in the service detection rule delivered by the PCRF.
  • the number includes one of the following:
  • the PCRF carries an insertion indication in a PCC rule provided to the PCEF, and when the PCEF detects the data packet according to the PCC rule, in the data packet. Inserting the private network IP address of the UE and the private network source port number; or
  • the PCRF carries an insertion indication in an ADC rule provided to the TDF, and when the TDF detects the data packet according to the ADC rule, in the data packet Insert the private network IP address and private network source port number of the UE.
  • a policy rule making system including:
  • the PC or the AAC is configured to receive the private network IP address, the private network source port number, and the first flow description information sent by the AF, and modify the source address in the first flow description information to the private network IP address, where the first The source port number in the first-class description information is changed to the private network source port number, and after the second stream description information is generated, the second stream description information is sent to the PCRF;
  • the PCRF is configured to receive the second flow description information sent by the PC or the AAC, and formulate a first PCC rule according to the second flow description information.
  • the AF is further configured to obtain the private network IP address and the private network source port number from a data packet.
  • the system further includes: a PCEF configured to receive a PCC rule provided by the PCRF to carry an insertion indication, when the PCEF detects the data packet according to the PCC rule, Inserting, in the data packet, the private network IP address and the private network source port number of the UE; or, the TDF, is configured to receive an ADC rule that carries the insertion indication provided by the PCRF, when the TDF is according to the When the ADC rule detects the data packet, insert the private network IP address of the UE and the private network source port number in the data packet.
  • a PCEF configured to receive a PCC rule provided by the PCRF to carry an insertion indication, when the PCEF detects the data packet according to the PCC rule, Inserting, in the data packet, the private network IP address and the private network source port number of the UE.
  • a policy rule making system including:
  • the PCRF is configured to receive a second PCC rule according to the private network IP address, the private network source port number, and the third stream description information sent by the AF, where the service data filter in the second PCC rule is generated by: Modifying the source address in the third flow description information to the private network IP address, and modifying the source port number to the private network source port number. .
  • the AF is further configured to obtain the private network IP address and the private network source port number from a data packet.
  • system further comprises:
  • a PCEF configured to receive a PCC rule that carries an insertion indication provided by the PCRF, and insert the private network IP of the UE in the data packet when the PCEF detects the data packet according to the PCC rule Address and the source port number of the private network; or,
  • a TDF configured to receive an ADC rule that carries an insertion indication provided by the PCRF, and insert the private network IP of the UE in the data packet when the TDF detects the data packet according to the ADC rule Address and the private network source port number.
  • a policy rule making system including:
  • the AF is configured to obtain a private network IP address, a private network source port number, and a fourth flow description information from the data packet, and modify the source address in the fourth flow description information to the private network IP address, where The source port number in the fourth stream description information is modified to be the source port number of the private network, and the fifth stream description information is generated and then provided to the PCRF;
  • the PCRF is configured to formulate a third PCC rule according to the fifth stream description information.
  • system further comprises:
  • a PCEF configured to receive a PCC rule that carries an insertion indication provided by the PCRF, and insert the private network IP of the UE in the data packet when the PCEF detects the data packet according to the PCC rule Address and the source port number of the private network; or,
  • a TDF configured to receive an ADC rule provided by the PCRF carrying an insertion indication, when the TDF is according to the When the ADC rule detects the data packet, insert the private network IP address of the UE and the private network source port number in the data packet.
  • a PC or AAC device comprising:
  • the first receiving module is configured to receive a private network IP address, a private network source port number, and a first flow description information sent by the AF;
  • the first modification module is configured to modify the source address in the first flow description information to the private network IP address, and modify the source port number in the first flow description information to the private network source port number to generate The second stream describes the information;
  • the first sending module is configured to send the second flow description information to the PCRF.
  • a PCRF device comprising:
  • a second receiving module configured to receive a private network IP address, a private network source port number, and a third stream description information sent by the AF;
  • a setting module configured to formulate a second PCC rule according to the private network IP address, the private network source port number, and the third flow description information, where the service data filter in the second PCC rule passes the following Mode generation: modifying the source address in the third flow description information to the private network IP address, and modifying the source port number to the private network source port number.
  • an AF apparatus including:
  • Obtaining a module configured to obtain a private network IP address, a private network source port number, and a fourth stream description information from the data packet;
  • the second modification module is configured to modify the source address in the fourth flow description information to the private network IP address, and modify the source port number in the fourth flow description information to the private network source port number. Generating a fifth stream description information and providing it to the PCRF;
  • the second sending module is configured to send the fifth stream description information to the PCRF.
  • the protocol converter PC or the application access control AAC receives the private network IP address, the private network source port number, and the first flow description information of the user equipment UE sent by the application function AF, and the PC or the AAC will use the first flow.
  • the source address in the description information is modified to the private network IP address, and the source port number in the first flow description information is changed to the private network source port number to generate a second flow description information, and the PC or the AAC sends the source port to the PCRF.
  • the second flow description information, the PCRF formulates the first PCC rule according to the second flow description information, and solves the problem that the user terminal may not perform correct resource reservation and resource control for multiple service access initiated by the user terminal at the same time. Resource reservation and control of multiple service access initiated by a user terminal simultaneously for one service.
  • FIG. 1 is a schematic diagram of a PCC architecture according to the related art
  • FIG. 2 is a schematic diagram of a PCC architecture of an AAC according to the related art
  • FIG. 3 is a schematic diagram of a PCC architecture of a NAT according to the related art
  • FIG. 4 is a flowchart of a method for formulating a policy rule according to an embodiment of the present invention
  • FIG. 5 is a structural block diagram of a PC or AAC device according to an embodiment of the present invention.
  • FIG. 6 is a structural block diagram of a PCRF device according to an embodiment of the present invention.
  • FIG. 7 is a structural block diagram of an AF apparatus according to an embodiment of the present invention.
  • FIG. 8 is a flowchart 1 of implementing a PCRF to formulate a PCC rule according to a preferred embodiment of the present invention
  • FIG. 9 is a flow chart 2 of implementing a PCRF to formulate a PCC rule in accordance with a preferred embodiment of the present invention.
  • FIG. 4 is a flowchart of a method for formulating a policy rule according to an embodiment of the present invention. As shown in FIG. 4, the process includes the following steps:
  • Step S402 the protocol converter PC or the application access control AAC receives the private network IP address, the private network source port number, and the first flow description information of the user equipment UE sent by the application function AF, and the PC or the AAC describes the first flow description information.
  • the source address is modified to the private network IP address, and the source port number in the first flow description information is changed to the private network source port number, and the second flow description information is generated.
  • Step S404 the PC or the AAC sends the second flow description information to the policy and charging rule function PCRF, so that the PCRF formulates the first PCC rule according to the second flow description information.
  • the protocol converter PC or the application access control AAC receives the private network IP address, the private network source port number, and the first flow description information of the user equipment UE sent by the application function AF, and the PC or the AAC describes the first flow.
  • the source address in the information is changed to the private network IP address, and the source port number in the first flow description information is changed to the private network source port number to generate a second flow description information; the PC or the AAC sends the first to the PCRF.
  • the second flow description information is generated, and the PCRF formulates the first PCC rule according to the second flow description information, and solves the problem that the user terminal may not perform correct resource reservation and resource control for multiple service access initiated by one user at the same time, and implements The user terminal reserves and controls the resources of multiple service access initiated by one service at the same time.
  • the source address of the first flow description information is a public network IP address converted by the network address translation function NAT
  • the source port number is a public network source port number after NAT conversion.
  • the protocol converter PC or the application access control AAC receives the user equipment sent by the application function AF.
  • the manner in which the AF obtains the private network IP address and the private network source port number includes one of the following:
  • the application detection function inserts the private network IP address of the UE and the private network source port number in the data packet according to the indication in the service detection rule delivered by the PCRF, and the AF obtains the private network IP address from the data packet and the Private network source port number; or,
  • the UE inserts the private network IP address and the private network source port number in the data packet, and the AF obtains the private network IP address and the private network source port number from the data packet.
  • the application detection function inserts the private network IP address of the UE and the private network source port number into the data packet according to the indication in the service detection rule delivered by the PCRF, and includes one of the following:
  • the PCRF carries an insertion indication in the PCC rule provided to the PCEF, and inserts the data packet into the data packet when the PCEF detects the data packet according to the PCC rule.
  • the PCRF carries an insertion indication in the application detection control ADC rule provided to the TDF, and inserts the data packet in the TDF when the TDF detects the data packet according to the ADC rule.
  • a method for formulating a policy rule including:
  • the PCRF receives the private network IP address, the private network source port number, and the third stream description information of the user equipment UE that is sent by the AF.
  • the PCRF generates a second PCC rule according to the private network IP address, the private network source port number, and the third flow description information, where the service data filter in the second PCC rule is generated by:
  • the source address in the flow description information is modified to the private network IP address, and the source port number is modified to the private network source port number.
  • the source address of the third stream description information is a public network IP address converted by the network address translation function NAT, and the source port number is a public network source port number after NAT conversion.
  • the manner of obtaining the private network IP address and the private network source port number includes the following manners. one:
  • the application detection function inserts the private network IP address of the UE and the private network source port number in the data packet according to the indication in the service detection rule delivered by the PCRF, and the AF obtains the private network IP address from the data packet and the Private network source port number; or,
  • the UE inserts the private network IP address and the private network source port number in the data packet, and the AF obtains the private network IP address and the private network source port number from the data packet.
  • the application detection function inserts the private network IP address of the UE and the private network source port number into the data packet according to the indication in the service detection rule delivered by the PCRF, and includes one of the following:
  • the PCRF carries an insertion indication in the PCC rule provided to the PCEF, and inserts the private network of the UE into the data packet when the PCEF detects the data packet according to the PCC rule. IP address and the source port number of the private network; or,
  • the PCRF carries an insertion indication in the ADC rule provided by the TDF.
  • the TDF detects the data packet according to the ADC rule, insert the private network IP address of the UE in the data packet. And the private network source port number.
  • a method for formulating a policy rule including:
  • the PCRF receives the fifth flow description information, where the AF obtains the private network IP address, the private network source port number, and the fourth flow description information from the data packet, and the AF modifies the source address in the fourth flow description information to the private
  • the IP address of the network is changed to the source port number of the fourth network description, and the fifth stream description information is generated.
  • the PCRF formulates a third PCC rule according to the fifth stream description information.
  • the source address of the fourth stream description information is a public network IP address converted by the network address translation function NAT, and the source port number is a public network source port number after NAT conversion.
  • the manner in which the AF obtains the private network IP address, the private network source port number, and the fourth stream description information from the data packet includes one of the following:
  • the application detection function inserts the private network IP address of the UE and the private network source port number in the data packet according to the indication in the service detection rule delivered by the PCRF, and the AF obtains the private network IP address from the data packet. And the source port number of the private network; or,
  • the UE inserts the private network IP address and the private network source port number in the data packet, and the AF obtains the private network IP address and the private network source port number from the data packet.
  • the application detection function inserts the private network IP address of the UE and the private network source port number into the data packet according to the indication in the service detection rule delivered by the PCRF, and includes one of the following:
  • the PCRF carries an insertion indication in the PCC rule provided to the PCEF, and inserts the private network of the UE into the data packet when the PCEF detects the data packet according to the PCC rule. IP address and the source port number of the private network; or,
  • the PCRF carries an insertion indication in the ADC rule provided to the TDF, and inserts the private network IP of the UE in the data packet when the TDF detects the data packet according to the ADC rule. Address and private network source port number.
  • a policy rule making system including:
  • the PC or the AAC is configured to receive the private network IP address, the private network source port number, and the first flow description information sent by the AF, and modify the source address in the first flow description information to the private network IP address, and describe the first flow description information. After the source port number is changed to the source port number of the private network, the second stream description information is sent to the PCRF.
  • the PCRF is configured to receive the second flow description information sent by the PC or the AAC, and formulate a first PCC rule according to the second flow description information.
  • the AF is further configured to obtain the private network IP address and the private network source port number from the data packet.
  • system further includes:
  • the PCEF is configured to receive the PCC rule that carries the insertion indication provided by the PCRF.
  • the PCEF detects the data packet according to the PCC rule, insert the private network IP address of the UE and the private network source port in the data packet. Number; or,
  • the TDF is configured to receive an ADC rule that carries the insertion indication provided by the PCRF, and when the TDF detects the data packet according to the ADC rule, insert the private network IP address of the UE and the private network source port in the data packet. number.
  • a policy rule making system including:
  • the PCRF is configured to receive a second PCC rule according to the private network IP address, the private network source port number, and the third flow description information sent by the AF, where the service data filter in the second PCC rule is generated by: The source address in the third flow description information is modified to the private network IP address, and the source port number is modified to the private network source port number. .
  • the AF is further configured to obtain the private network IP address and the private network source port number from the data packet.
  • system further includes:
  • the PCEF is configured to receive the PCC rule that carries the insertion indication provided by the PCRF.
  • the PCEF detects the data packet according to the PCC rule, insert the private network IP address of the UE and the private network source port in the data packet. Number; or,
  • the TDF is configured to receive an ADC rule that carries the insertion indication provided by the PCRF, and when the TDF detects the data packet according to the ADC rule, insert the private network IP address of the UE and the private network source port in the data packet. number.
  • a policy rule making system which includes:
  • the AF is configured to obtain a private network IP address, a private network source port number, and a fourth flow description information from the data packet, and modify the source address in the fourth flow description information to the private network IP address, and the fourth The source port number in the flow description information is changed to the source port number of the private network, and the fifth stream description information is generated and sent to the PCRF.
  • the PCRF is configured to formulate a third PCC rule according to the fifth stream description information.
  • system further includes:
  • the PCEF is configured to receive the PCC rule that carries the insertion indication provided by the PCRF.
  • the PCEF detects the data packet according to the PCC rule, insert the private network IP address of the UE and the private network source port in the data packet. Number; or,
  • the TDF is configured to receive an ADC rule that carries the insertion indication provided by the PCRF, and when the TDF detects the data packet according to the ADC rule, insert the private network IP address of the UE and the private network source port in the data packet. number.
  • FIG. 5 is a structural block diagram of a PC or an AAC device according to an embodiment of the present invention. As shown in FIG. 5, the device includes:
  • the first receiving module 52 is configured to receive a private network IP address, a private network source port number, and first flow description information sent by the AF;
  • the first modification module 54 is configured to modify the source address in the first flow description information to the private network IP address, and modify the source port number in the first flow description information to the private network source port number to generate a second flow. Description;
  • the first sending module 56 is configured to send the second stream description information to the PCRF.
  • FIG. 6 is a structural block diagram of a PCRF device according to an embodiment of the present invention. As shown in FIG. 6, the device includes:
  • the second receiving module 62 is configured to receive a private network IP address, a private network source port number, and a third stream description information that are sent by the AF.
  • the setting module 64 is configured to formulate a second PCC rule according to the private network IP address, the private network source port number, and the third flow description information, where the service data filter in the second PCC rule is generated by: Modifying the source address in the third flow description information to the private network IP address, and modifying the source port number to the private network source port number.
  • FIG. 7 is a structural block diagram of an AF apparatus according to an embodiment of the present invention. As shown in FIG. 7, the apparatus includes:
  • the obtaining module 72 is configured to obtain a private network IP address, a private network source port number, and a fourth stream description information from the data packet;
  • the second modification module 74 is configured to modify the source address in the fourth flow description information to the private network IP address, and modify the source port number in the fourth flow description information to the private network source port number to generate the first
  • the five streams describe the information and provide it to the PCRF;
  • the second sending module 76 is configured to send the fifth stream description information to the PCRF.
  • the source address of the first flow description information is a public network IP address converted by the network address translation function NAT
  • the source port number is a public network source port number after NAT conversion.
  • the manner in which the AF obtains the private network IP address and the private network source port number includes the following One:
  • the application detection function inserts the private network IP address of the UE and the private network source port number in the data packet according to the indication in the service detection rule delivered by the PCRF, and the AF obtains the private network IP address from the data packet and the Private network source port number; or,
  • the UE inserts the private network IP address and the private network source port number in the data packet, and the AF obtains the private network IP address and the private network source port number from the data packet.
  • the application detection function inserts the private network IP address of the UE and the private network source port number in the data packet according to the indication in the service detection rule delivered by the PCRF, and the AF obtains the data packet from the data packet.
  • the private network IP address and the private network source port number include one of the following:
  • the PCRF carries an insertion indication in the PCC rule provided to the PCEF, and inserts the data packet into the data packet when the PCEF detects the data packet according to the PCC rule.
  • the PCRF carries an insertion indication in an ADC rule provided to the TDF, and when the TDF detects the data packet according to the ADC rule, inserting the UE into the data packet
  • the private network IP address and the private network source port number The AF obtains the private network IP address and the private network source port number.
  • a method for formulating a policy rule including:
  • the AF sends the private network IP address, the private network source port number, and the third stream description information of the user equipment UE to the PCRF, where
  • the PCRF determines a second PCC rule according to the private network IP address, the private network source port number, and the third flow description information, where the service data filter in the second PCC rule passes the source address for the third flow description information. Change the IP address of the private network and change the source port number to the source port number of the private network.
  • the source address of the third stream description information is a public network IP address converted by the network address translation function NAT, and the source port number is a public network source port number after NAT conversion.
  • the manner of obtaining the private network IP address and the private network source port number includes the following One:
  • the application detection function inserts the private network IP address of the UE and the private network source port number in the data packet according to the indication in the service detection rule delivered by the PCRF, and the AF obtains the private network IP address from the data packet and the Private network source port number; or,
  • the UE inserts the private network IP address and the private network source port number in the data packet, and the AF obtains the private network IP address and the private network source port number from the data packet.
  • the application detection function inserts the private network IP address of the UE and the private network source port number in the data packet according to the indication in the service detection rule delivered by the PCRF, and the AF obtains the data packet from the data packet.
  • the private network IP address and the private network source port number include one of the following:
  • the PCRF carries an insertion indication in the PCC rule provided to the PCEF, and inserts the private network of the UE into the data packet when the PCEF detects the data packet according to the PCC rule.
  • the IP address and the source port number of the private network, the AF obtains the private network IP address and the private network source port number; or
  • the PCRF carries an insertion indication in an ADC rule provided to the service detection function TDF, and when the TDF detects the data packet according to the ADC rule, inserting the private part of the UE in the data packet
  • the IP address of the network and the source port number of the private network The AF obtains the private network IP address and the private network source port number.
  • a method for formulating a policy rule including:
  • the AF obtains the private network IP address, the private network source port number, and the fourth flow description information from the data packet, and the AF modifies the source address in the fourth flow description information to the private network IP address, and describes the fourth flow.
  • the source port number in the information is changed to the source port number of the private network, and the fifth stream description information is generated and sent to the PCRF.
  • the PCRF formulates a third PCC rule according to the fifth stream description information.
  • the source address of the fourth stream description information is a public network IP address converted by the network address translation function NAT, and the source port number is a public network source port number after NAT conversion.
  • the manner in which the AF obtains the private network IP address, the private network source port number, and the fourth stream description information from the data packet includes one of the following:
  • the application detection function inserts the private network IP address of the UE and the private network source port number in the data packet according to the indication in the service detection rule delivered by the PCRF, and the AF obtains the private network IP address from the data packet. And the source port number of the private network; or,
  • the UE inserts the private network IP address and the private network source port number in the data packet, and the AF obtains the private network IP address and the private network source port number from the data packet.
  • the application detection function inserts the private network IP address of the UE and the private network source port number in the data packet according to the indication in the service detection rule delivered by the PCRF, and the AF is from the data packet.
  • Obtaining the private network IP address and the private network source port number includes one of the following:
  • the PCRF carries an insertion indication in the PCC rule provided to the PCEF, and inserts the private network of the UE into the data packet when the PCEF detects the data packet according to the PCC rule.
  • the IP address and the source port number of the private network, the AF obtains the private network IP address and the private network source port number; or
  • the PCRF carries an insertion indication in an ADC rule provided to the service detection function TDF, and when the TDF detects the data packet according to the ADC rule, inserting the private part of the UE in the data packet
  • the IP address of the network and the source port number of the private network The AF obtains the private network IP address and the private network source port number.
  • a policy rule making system including:
  • the AF is configured to provide the private network IP address, the private network source port number, and the first flow description information to the AAC.
  • the PC or the AAC is configured to receive the private network IP address, the private network source port number, and the first flow description information sent by the AF, and modify the source address in the first flow description information to the private network IP address,
  • the source port number in the first stream description information is changed to the source port number of the private network, and after generating the second stream description information, the second stream description information is sent to the PCRF;
  • the PCRF is set to the second flow description information sent by the PC or the AAC, and the first PCC rule is formulated according to the second flow description information.
  • the AF is further configured to obtain the private network IP address and the private network source port number from the data packet.
  • the PCEF is configured to receive a PCC rule that carries the insertion indication provided by the PCRF.
  • the PCEF detects the data packet according to the PCC rule, insert the private network IP address of the UE in the data packet. And the source port number of the private network; or,
  • the TDF is configured to receive an ADC rule that carries the insertion indication provided by the PCRF, and when the TDF detects the data packet according to the ADC rule, insert the private network IP address of the UE and the private network source port in the data packet. number.
  • a policy rule making system including:
  • the AF is configured to send, to the PCRF, the private network IP address, the private network source port number, and the third flow description information of the user equipment UE.
  • the PCRF is configured to formulate a second PCC rule according to the private network IP address, the private network source port number, and the third flow description information, where the service data filter in the second PCC rule passes the third flow description information. Change the source IP address to the private IP address and change the source port number to the private network source port number.
  • the AF is further configured to obtain the private network IP address and the private network source port number from the data packet.
  • the PCEF is configured to receive a PCC rule that carries the insertion indication provided by the PCRF.
  • the PCEF detects the data packet according to the PCC rule, insert the private network IP address of the UE in the data packet. And the source port number of the private network; or,
  • the TDF is configured to receive an ADC rule that carries the insertion indication provided by the PCRF, and when the TDF detects the data packet according to the ADC rule, insert the private network IP address of the UE and the private network source port in the data packet. number.
  • a policy rule making system including:
  • the AF is configured to obtain a private network IP address, a private network source port number, and a fourth flow description information from the data packet, and modify the source address in the fourth flow description information to the private network IP address, and the fourth The source port number in the flow description information is changed to the source port number of the private network, and the fifth stream description information is generated and sent to the PCRF.
  • the PCRF is configured to formulate a third PCC rule according to the fifth stream description information.
  • the PCEF is configured to receive a PCC rule that carries the insertion indication provided by the PCRF.
  • the PCEF detects the data packet according to the PCC rule, insert the private network IP address of the UE in the data packet. And the source port number of the private network; or,
  • the TDF is configured to receive an ADC rule that carries the insertion indication provided by the PCRF, and when the TDF detects the data packet according to the ADC rule, insert the private network IP address of the UE and the private network source port in the data packet. number.
  • a PC or an AAC device and a PCRF device are provided, which are used to implement the above-mentioned embodiments and preferred embodiments, and are not described again.
  • the term “module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • the application function AF provides the private network source port number to the PCRF through the PC/AAC, and the PCRF formulates different PCC rules to implement resource reservation and QoS control for the service data flow.
  • the source IP address, the source port number, the destination IP address, and the destination port number are all for the uplink direction).
  • FIG. 8 is a flowchart 1 of implementing a PCRF to formulate a PCC rule according to a preferred embodiment of the present invention, as shown in FIG.
  • Step 801 The UE attaches to the network to establish an IP-CAN session.
  • a Gx session for policy and charging control is established between the PCEF and the PCRF.
  • a gateway control session for policy control is established between the BBERF and the PCRF.
  • the PCRF carries an insertion indication in the PCC rule provided to the PCEF, that is, when the PCEF detects a specific service data flow according to the PCC rule, the private network IP address of the UE and the private network source port number of the service data flow are inserted in the data packet. .
  • Step 802 The UE initiates a service access. After detecting the specific service data flow initiated by the UE according to the PCC rule, the PCEF adds the private network IP address and the private network source port number of the UE to the data packet of the service (represented as the private network source). Port 1). industry After the data packet passes through the NAT, the source IP address (that is, the private IP address of the UE) and the source port number (that is, the private network source port number 1) in the quintuple of the packet header are translated into a public network IP address by NAT. Public network source port number (expressed as public network source port number 1). The application server obtains the data packet quintuple and the private network IP address and private network source port number 1 of the UE added by the PCEF in the data packet.
  • Step 803 The AF sends an HTTP POST message to the AAC, where the message carries the service description information, the public network IP address, the private network IP address, and the private network source port number 1.
  • the service description information includes the service description information identifier 1, the flow description information, the media type, and the requested bandwidth information.
  • the flow description information is the quintuple of the data packet acquired by the application server in step 802.
  • Step 804 The AAC adjusts the flow description information in the service description, and the source address is changed to the private network IP address, and the source port number is changed to the private network source port 1.
  • Step 805 The AAC sends an AAR message to the PCRF, where the message carries the service flow description information and the private network IP address.
  • Step 806 After the PCRF saves the information, a confirmation message is returned.
  • Step 807 The AAC returns an acknowledgement message to the AF.
  • Step 808 The PCRF formulates the PCC rule 1 according to the service information, the network policy, and the user subscription information.
  • the flow description information (also called the service filter template) carried in the PCC rule 1 is the flow description information provided by the AAC.
  • the QoS information carried in the PCC rule 1 includes a QoS Class Identifier (QCI), and an Allocation And Retention Priority (ARP). If the QCI defined by the PCRF is GBR-QCI, the QoS information includes a Guaranteed Bit Rate (GBR) and a Maximum Bit Rate (MBR); if the QCI is a non-guaranteed bit Rate (Non-GBR) QCI, the MBR may be included in the QoS information. If BBERF exists, the PCRF also formulates QoS rules according to PCC Rule 1.
  • QCI QoS Class Identifier
  • ARP Allocation And Retention Priority
  • Step 809 The PCRF provides QoS rule 1 to the BBERF;
  • Step 810 The PCRF provides PCC rule 1 to the PCEF;
  • Step 811 The UE initiates the access of the same service again.
  • the PCEF detects the specific service data flow initiated by the UE again according to the PCC rule
  • the private IP address of the UE and the private data of the service data flow are added to the data packet of the service.
  • Source port number (expressed as private network source port number 2).
  • the source IP address that is, the private IP address of the UE
  • the source port number that is, the private network source port number 2 in the quintuple of the data packet are translated into a public network IP address by NAT.
  • Source public network port number (expressed as public network source port number 2).
  • the application server obtains the packet quintuple and the private network IP address and private network source port number 2 of the UE added by the PCEF in the data packet. Since the UE accesses the same service, the destination IP address and destination port number in the quintuple are the same as the destination IP address and destination port number of the quintuple in step 802.
  • Step 812 The AF sends an HTTP PUT message to the AAC, where the message carries the service description information, the public network IP address, the private network IP address, and the private network source port number 2.
  • the service description information includes the service description information identifier 2, the flow description information, the media type, and the requested bandwidth information.
  • the stream description information is the quintuple of the data packet obtained in step 811.
  • Step 813 The AAC adjusts the flow description information in the service description, and the source address is modified into a private network IP address and a source port number. Change to private network source port 2.
  • Step 814 The AAC sends an AAR message to the PCRF, where the message carries the service flow description information and the private network IP address.
  • Step 815 After the PCRF saves the information, it returns a confirmation message.
  • Step 816 The AAC returns an acknowledgement message to the AF.
  • Step 817 The PCRF formulates the PCC rule 2 according to the service information, the network policy, and the user subscription information.
  • the flow description information (also called the service filter template) carried in the PCC rule 2 is the flow description information provided by the AAC.
  • the QoS information carried in PCC Rule 2 includes QCI and ARP. If the QCI defined by the PCRF is GBR-QCI, the QoS information includes the GBR and the MBR; if the QCI defined by the PCRF is the Non-GBR QCI, the QoS information may include the MBR. If BBERF exists, the PCRF also formulates QoS rules according to PCC Rule 2.
  • Step 818 The PCRF provides QoS rule 2 to the BBERF;
  • Step 819 The PCRF provides PCC rule 2 to the PCEF;
  • the PCEF can perform resource reservation according to PCC rule 1 and PCC rule 2 respectively, and respectively accesses the same service twice. Data filtering and control.
  • the flow description information is adjusted by the AAC.
  • the flow description information may also be adjusted by the AF or the PCRF.
  • the implementation of the AF adjustment is as follows: the flow description information provided by the AF to the AAC sets the source address to the private IP address of the UE, and the source port number is set to the private network source port number, so that the AAC does not need further adjustment, nor does it The source network port number of the external network needs to be sent to the PCRF.
  • the implementation of the adjustment by the PCRF is as follows: First, the AAC directly sends all the information obtained from the AF to the PCRF. The PCRF formulates the PCC rule and describes the flow in the PCC rule. The source IP address in the information is set to the private IP address of the UE, and the source port number is set to the private network source port number.
  • the application function AF provides a private network source port number to the PCRF, and the PCRF formulates different PCC rules to implement resource reservation and QoS control for the service data flow.
  • FIG. 9 is a second flowchart of implementing a PCRF to formulate a PCC rule according to a preferred embodiment of the present invention, as shown in FIG.
  • Step 901 The UE attaches to the network to establish an IP-CAN session.
  • a Gx session for policy and charging control is established between the PCEF and the PCRF.
  • a gateway control session for policy control is established between the BBERF and the PCRF.
  • the PCRF carries an insertion indication in the PCC rules provided to the PCEF. That is, when the PCEF detects a specific service data flow according to the PCC rule, the private network IP address and the private network source port number of the UE are inserted into the data packet.
  • Step 902 The UE initiates a service access. After detecting the specific service data flow initiated by the UE according to the PCC rule, the PCEF adds the private network IP address and the private network source port number of the UE to the data packet of the service (represented as the private network source). Port number 1). After the data packet of the service passes through the NAT, the source IP address in the quintuple of the data packet (that is, the private IP address of the UE) and the source end The slogan (that is, the private network port number 1) is translated into a public network IP address and a source public network port number (indicated as the source public network port number 1). The application server obtains the data packet quintuple and the private network IP address and private network source port number of the UE added by the PCEF in the data packet.
  • Step 903 The AF sends an AAR message to the PCRF, where the message carries the service description information, the public network IP address, the private network IP address, and the private network source port number 1.
  • the service description information includes the service description information identifier 1, the flow description information, the media type, and the requested bandwidth information.
  • the flow description information is the quintuple of the data packet obtained by the application server in step 902.
  • Step 904 After the PCRF saves the information, a confirmation message is returned.
  • Step 905 The PCRF formulates the PCC rule 1 according to the service information, the network policy, and the user subscription information, where the flow description information (ie, the service filter template) carried in the PCC rule 1 is the source of the service description information provided by the PCRF according to the AF.
  • the address is changed to the private IP address of the UE, and the source port number is changed to the private network source port number 1.
  • the QoS information carried in the PCC rule 1 includes a QoS Class Identifier (QCI), and an Allocation And Retention Priority (ARP).
  • QCI QoS Class Identifier
  • ARP Allocation And Retention Priority
  • the QoS information includes a Guaranteed Bit Rate (GBR) and a Maximum Bit Rate (MBR); if the QCI is a non-guaranteed bit Rate (Non-GBR) QCI, the MBR may be included in the QoS information. If BBERF exists, the PCRF also formulates QoS rules according to PCC Rule 1.
  • Step 906 The PCRF provides QoS rule 1 to the BBERF;
  • Step 907 The PCRF provides PCC rule 1 to the PCEF;
  • Step 908 The UE initiates the access of the same service again.
  • the PCEF detects the specific service data flow initiated by the UE again, the PCEF adds the private network IP address and the private network source port number of the UE to the data packet of the service. Expressed as the private network source port number 2).
  • the source IP address that is, the private IP address of the UE
  • the source port number that is, the private network source port number 2
  • Source public network port number (expressed as source public network port number 2).
  • the application server obtains the packet quintuple and the private network IP address and private network source port number 2 of the UE added by the PCEF in the data packet. Since the UE accesses the same service, the destination IP address and destination port number in the quintuple are the same as step 902.
  • Step 909 The AF sends an AAR message to the PCRF, where the message carries the service description information, the public network IP address, the private network IP address, and the private network source port number 2.
  • the service description information includes the service description information identifier 2, the flow description information, the media type, and the requested bandwidth information.
  • the stream description information is the quintuple of the data packet obtained in step 908.
  • Step 910 After the PCRF saves the information, a confirmation message is returned.
  • Step 911 The PCRF formulates the PCC rule 2 according to the information such as the service information, the network policy, and the user subscription.
  • the flow description information carried in the PCC rule 2 is that the PCRF modifies the source address to the private network IP address according to the service description information provided by the AF.
  • the source port number is changed to the private network source port 2.
  • the QoS information carried in PCC Rule 2 includes QCI and ARP. If the QCI defined by the PCRF is GBR-QCI, the QoS information includes the GBR and the MBR; if the QCI defined by the PCRF is the Non-GBR QCI, the QoS information may include the MBR. If BBERF exists, the PCRF also formulates QoS rules according to PCC Rule 2.
  • Step 912 Optionally, the PCRF provides QoS rule 2 to the BBERF;
  • Step 913 The PCRF provides PCC rule 2 to the PCEF;
  • the PCEF can perform resource reservation according to PCC rule 1 and PCC rule 2 respectively, and respectively accesses the same service twice. Data filtering and control.
  • the PCRF adjusts the flow description information, and in other embodiments, it can also be AF. That is, the flow description information provided by the AF to the PCRF sets the source address to the private IP address of the UE, and the source port number is set to the private network source port number, so that the AF does not need to send the external private network source port number to the PCRF. It is.
  • the PCEF inserts the private network IP address and the private network source port number of the UE in the data packet according to the indication of the PCC rule.
  • the TDF may also insert the private network IP address and the private network source port number of the UE in the data packet according to the insertion indication in the ADC rule delivered by the PCRF. That is, in the scenario where the network deploys the TDF, in the process of establishing the IP-CAN session, the PCRF sends the ADC rule carrying the insertion indication to the TDF.
  • the TDF detects the service data flow (also called the application) according to the ADC rule, The TDF inserts the private network IP address and the private network source port number of the UE in the data packet of the service data flow.
  • the PCEF inserts the private network IP address and the private network source port number of the UE in the data packet according to the indication of the PCC rule.
  • the UE may actively insert the private network IP address and the private network source port number of the UE in the data packet, and the AF may also obtain the above two information from the data packet.
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
  • the optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.
  • Embodiments of the present invention also provide a storage medium.
  • the foregoing storage medium may be configured to store program code for executing the method of the above embodiment:
  • the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • a mobile hard disk e.g., a hard disk
  • magnetic memory e.g., a hard disk
  • the processor executes the method of the above embodiment according to the stored program code in the storage medium.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device so that they can be stored in the storage device Executed by the computing device, and in some cases, the steps shown or described may be performed in an order different than that herein, or they may be fabricated into individual integrated circuit modules, or multiple of them. Or the steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.
  • the protocol converter PC or the application access control AAC receives the private network IP address, the private network source port number, and the first flow description information of the user equipment UE sent by the application function AF, the PC or The AAC modifies the source address in the first flow description information to the private network IP address, and modifies the source port number in the first flow description information to the private network source port number to generate a second flow description information, where the PC or The AAC sends the second flow description information to the PCRF, and the PCRF formulates the first PCC rule according to the second flow description information, which may solve the problem that the user terminal may not perform correct resource reservation for multiple service access initiated by the user terminal simultaneously for one service.
  • the problem of resource control realizes resource reservation and control of multiple service access initiated by a user terminal simultaneously for one service.

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Abstract

本发明提供了一种策略规则制定方法、系统及装置，其中，该方法包括如下步骤：协议转换器（PC）或应用接入控制（AAC）接收应用功能（AF）发送的用户设备（UE）的私网网际协议（IP）地址、私网源端口号以及第一流描述信息，该PC或该AAC将该第一流描述信息中的源地址修改为该私网IP地址，将该第一流描述信息中的源端口号修改为该私网源端口号，生成第二流描述信息（S402），该PC或该AAC向策略和计费规则功能（PCRF）发送该第二流描述信息，以便于PCRF根据该第二流描述信息制定第一策略和计费控制架构（PCC）规则（S404）。采用本发明，实现了用户终端对一个业务同时发起的多个业务访问的资源预留和控制。

Description

策略规则制定方法、系统及装置 技术领域
本发明涉及通信领域，具体而言，涉及一种策略规则制定方法、系统及装置。
背景技术
图1是根据相关技术的PCC架构示意图，如图1所示，图1是第三代合作伙伴计划(3rd Generation Partnership Project，简称为3GPP)定义的策略和计费控制架构(Policy and Charging Control,简称为PCC)。
策略和计费规则功能(Policy and Charging Rules Function,简称为PCRF)为业务使用网络资源进行服务质量(Quality of Service，简称为QoS)和计费策略的制订。PCRF制定所述控制策略需要结合从应用功能(Application function，简称为AF)接收的业务信息，从用户签约数据库(Subscription Profile Repository，简称为SPR)接收的用户签约信息，运营商配置的策略等。PCRF将为业务制定的控制策略下发给策略和计费执行功能(Policy and Charging Enforcement Function，简称为PCEF)或者承载绑定和事件上报功能(Bearer Binding and Event Report Function，简称为BBERF)执行。同时PCRF可以向PCEF和/或BBERF订阅承载层相关事件，以便当承载层发生所述事件时及时感知，并更改控制策略。此外，PCEF以及业务检测功能(Traffic Detection Function，简称为TDF)能够根据PCRF下发的PCC规则(PCEF)或应用检测控制(Application Detection Control，简称为ADC)规则(TDF)执行应用检测和控制功能。
随着移动互联网的发展，运营商需要与第三方数据应用提供商进行互通，为第三方数据应用提供商提供的业务进行QoS保障。图2是根据相关技术的应用接入控制(Application Access Control,简称为AAC)的PCC架构示意图，如图2所示，由于目前PCC支持的Rx接口采用的Diameter协议，而对于大多数第三方数据应用提供商来说，他们更擅长基于SOAP、REST协议的开发。目前业界研究PCC架构支持基于SOAP/REST协议的Rx接口。在PCRF和AF直接设置一个称为协议转换器(Protocol Converter，简称为PC)的逻辑功能，设置为将SOAP或REST协议转换成Diameter。在本发明的实施例中，还可以在PC上面增加一些接入控制功能，以便能够更好的实现运营商对第三方数据应用的接入控制，此时该逻辑功能还称为AAC功能实体。
图3是根据相关技术的NAT的PCC架构示意图，如图3所示，为了解决IP地址短缺的问题，运营商通常在分组网络网关(PDN(Pocket Data Network)Gateway,简称为P-GW)之后部署网络地址转换设备(Network Address Translation,简称为NAT)。由于NAT存在，就使得相同PDN连接承载在分组核心演进网(Evolved Packet Core，简称为EPC)内部使用的私有IP地址和端口号，与外部分组网络中使用的公有IP地址和端口号有所不同。在相关技术中，AF提供给PCRF设置为制定PCC规则的业务信息是基于外部分组网络中的经过变换的IP地 址和端口号，首先PCRF无法根据AF提供的公有IP地址和PCEF提供的私网IP地址将AF会话和IP接入网会话(IP-connectivity Access Network，简称为IP-CAN)进行关联，其次若PCRF根据外部的IP地址和端口号制定PCC规则中的过滤器模板提供给PCEF或BBERF执行，PCEF或BBERF将无法匹配正确的数据流。
为了解决上述问题，相关技术中提出了一种解决方案，即NAT将地址转换的映射表发送给PCRF，PCRF根据该映射表以及AF提供的信息就能够找到对应的私网IP地址和端口号。但是这种方案要求NAT与PCRF有互通机制，对现有网络影响较大。
在相关技术中还提出了另外一种实施方式，P-GW在UE发送的分组数据报文的头部插入该UE的私网IP地址，AF在向PCRF提供业务信息的时候同时提供UE的私网IP地址，这样PCRF可以根据私网IP地址进行会话关联。然而目前的机制只能进会话绑定，由于PCRF无法获取业务的私网源端口号，导致UE针对一个业务同时发起的多个业务访问可能无法进行正确的资源预留和资源控制。譬如，UE向同一个业务同时发起了2个HTTP的业务请求，由于这两个业务的业务数据流的私网IP地址和服务器端IP地址、服务器端口号都一致。现有机制中PCRF无法下发正确的PCC规则为同时进行的2次业务访问进行资源预留和控制。
针对相关技术中，用户终端针对一个业务同时发起的多个业务访问可能无法进行正确的资源预留和资源控制的问题，目前尚未提出有效的解决方案。
发明内容
本发明提供了一种策略规则制定方法、系统及装置，以至少解决相关技术中用户终端针对一个业务同时发起的多个业务访问可能无法进行正确的资源预留和资源控制的问题。
根据本发明的一个实施例，提供了一种策略规则制定方法，包括：
协议转换器PC或应用接入控制AAC接收应用功能AF发送的用户设备UE的私网IP地址、私网源端口号以及第一流描述信息，所述PC或所述AAC将所述第一流描述信息中的源地址修改为所述私网IP地址，将所述第一流描述信息中的源端口号修改为所述私网源端口号，生成第二流描述信息；
所述PC或所述AAC向策略和计费规则功能PCRF发送所述第二流描述信息，以便于所述PCRF根据所述第二流描述信息制定第一PCC规则。
在本发明的实施例中，该方法还包括：
所述第一流描述信息的源地址为经过网络地址转换功能NAT转换后的公网IP地址，源端口号为经过NAT转换后的公网源端口号。
在本发明的实施例中，协议转换器PC或应用接入控制AAC接收应用功能AF发送的用户设备UE的私网IP地址、私网源端口号以及第一流描述信息之前，所述AF获取所述私网IP地址和所述私网源端口号的方式包括以下之一：
应用检测功能根据PCRF下发的业务检测规则中的指示在数据包中插入所述UE的所述私网IP地址和所述私网源端口号，所述AF从所述数据包中获取所述私网IP地址和所述私网源端口号；或者，
所述UE在数据包中插入所述私网IP地址和所述私网源端口号，所述AF从所述数据包中获取所述私网IP地址和所述私网源端口号。
在本发明的实施例中，应用检测功能根据PCRF下发的业务检测规则中的指示在数据包中插入所述UE的所述私网IP地址和所述私网源端口号包括以下之一：
若所述应用检测功能为策略计费执行功能PCEF时，所述PCRF在向所述PCEF提供的PCC规则中携带插入指示，当所述PCEF根据所述PCC规则检测到所述数据包时，在所述数据包中插入所述UE的所述私网IP地址和所述私网源端口号；或者，
若所述应用检测功能为业务检测功能TDF时，所述PCRF在向所述TDF提供的应用检测控制ADC规则中携带插入指示，当所述TDF根据所述ADC规则检测到所述数据包时，在所述数据包中插入所述UE的私网IP地址和私网源端口号。
根据本发明的另一个实施例，还提供了一种策略规则制定方法，其中，包括：
PCRF接收AF发送的用户设备UE的私网IP地址、私网源端口号以及第三流描述信息；
所述PCRF根据所述私网IP地址、所述私网源端口号以及所述第三流描述信息制定第二PCC规则，其中，所述第二PCC规则中的业务数据过滤器通过以下方式生成：将所述第三流描述信息中的源地址修改为所述私网IP地址，并将源端口号修改为所述私网源端口号。
在本发明的实施例中，该方法还包括：
所述第三流描述信息的源地址为经过网络地址转换功能NAT转换后的公网IP地址，源端口号为经过NAT转换后的公网源端口号。
在本发明的实施例中，PCRF接收AF发送的用户设备UE的私网IP地址、私网源端口号以及第三流描述信息之前，获取所述私网IP地址和所述私网源端口号的方式包括以下之一：
应用检测功能根据PCRF下发的业务检测规则中的指示在数据包中插入所述UE的所述私网IP地址和所述私网源端口号，所述AF从所述数据包中获取所述私网IP地址和所述私网源端口号；或者，
所述UE在数据包中插入所述私网IP地址和所述私网源端口号，所述AF从所述数据包中获取所述私网IP地址和所述私网源端口号。
在本发明的实施例中，应用检测功能根据PCRF下发的业务检测规则中的指示在数据包中插入所述UE的所述私网IP地址和所述私网源端口号包括以下之一：
若所述应用检测功能为PCEF时，所述PCRF在向所述PCEF提供的PCC规则中携带插入指示，当所述PCEF根据所述PCC规则检测到所述数据包时，在所述数据包中插入所述UE 的所述私网IP地址和所述私网源端口号；或者，
若所述应用检测功能为TDF时，所述PCRF在所述TDF提供的ADC规则中携带插入指示，当所述TDF根据所述ADC规则检测到所述数据包时，在所述数据包中插入所述UE的私网IP地址和私网源端口号。
根据本发明的另一个实施例，还提供了一种策略规则制定方法，其中，包括：
PCRF接收第五流描述信息，其中，AF从数据包中获取私网IP地址、私网源端口号以及第四流描述信息，所述AF将所述第四流描述信息中的源地址修改为所述私网IP地址，将所述第四流描述信息中的源端口号修改为所述私网源端口号，生成所述第五流描述信息；
所述PCRF根据所述第五流描述信息制定第三PCC规则。
在本发明的实施例中，该方法还包括：
所述第四流描述信息的源地址为经过网络地址转换功能NAT转换后的公网IP地址，源端口号为经过NAT转换后的公网源端口号。
在本发明的实施例中，所述AF从所述数据包中获取所述私网IP地址、所述私网源端口号以及所述第四流描述信息的方式包括以下之一：
应用检测功能根据所述PCRF下发的业务检测规则中的指示在所述数据包中插入所述UE的所述私网IP地址和所述私网源端口号，所述AF从所述数据包中获取所述私网IP地址和所述私网源端口号；或者，
所述UE在所述数据包中插入所述私网IP地址和所述私网源端口号，所述AF从所述数据包中获取所述私网IP地址和所述私网源端口号。
在本发明的实施例中，所述应用检测功能根据所述PCRF下发的所述业务检测规则中的指示在数据包中插入所述UE的所述私网IP地址和所述私网源端口号包括以下之一：
若所述应用检测功能为PCEF时，所述PCRF在向所述PCEF提供的PCC规则中携带插入指示，当所述PCEF根据所述PCC规则检测到所述数据包时，在所述数据包中插入所述UE的所述私网IP地址和所述私网源端口号；或者，
若所述应用检测功能为TDF时，所述PCRF在向所述TDF提供的ADC规则中携带插入指示，当所述TDF根据所述ADC规则检测到所述数据包时，在所述数据包中插入所述UE的私网IP地址和私网源端口号。
根据本发明的另一个实施例，还提供了一种策略规则制定系统，包括：
PC或AAC，设置为接收AF发送的私网IP地址、私网源端口号以及第一流描述信息，将所述第一流描述信息中的源地址修改为所述私网IP地址，将所述第一流描述信息中的源端口号修改为所述私网源端口号，生成第二流描述信息后，将所述第二流描述信息发送给PCRF；
PCRF，设置为接收所述PC或所述AAC发送的所述第二流描述信息，并根据所述第二流描述信息制定第一PCC规则。
在本发明的实施例中，所述AF还设置为从数据包中获取所述私网IP地址和所述私网源端口号。
在本发明的实施例中，所述系统还包括：PCEF，设置为接收所述PCRF提供的携带插入指示的PCC规则，当所述PCEF根据所述PCC规则检测到所述数据包时，在所述数据包中插入所述UE的所述私网IP地址和所述私网源端口号；或者，TDF，设置为接收所述PCRF提供的携带插入指示的ADC规则，当所述TDF根据所述ADC规则检测到所述数据包时，在所述数据包中插入所述UE的所述私网IP地址和所述私网源端口号。
根据本发明的另一个实施例，还提供了一种策略规则制定系统，包括：
PCRF，设置为接收AF发送的根据私网IP地址、私网源端口号以及第三流描述信息制定第二PCC规则，其中，所述第二PCC规则中的业务数据过滤器通过以下方式生成：将所述第三流描述信息中的源地址修改为所述私网IP地址，并将源端口号修改为所述私网源端口号。。
在本发明的实施例中，所述AF还设置为从数据包中获取所述私网IP地址和所述私网源端口号。
在本发明的实施例中，所述系统还包括：
PCEF，设置为接收所述PCRF提供的携带插入指示的PCC规则，当所述PCEF根据所述PCC规则检测到所述数据包时，在所述数据包中插入所述UE的所述私网IP地址和所述私网源端口号；或者，
TDF，设置为接收所述PCRF提供的携带插入指示的ADC规则，当所述TDF根据所述ADC规则检测到所述数据包时，在所述数据包中插入所述UE的所述私网IP地址和所述私网源端口号。
根据本发明的另一个实施例，还提供了一种策略规则制定系统，包括：
AF，设置为从数据包中获取私网IP地址、私网源端口号以及第四流描述信息，并将所述第四流描述信息中的源地址修改为所述私网IP地址，将所述第四流描述信息中的源端口号修改为所述私网源端口号，生成第五流描述信息后提供给PCRF；
PCRF，设置为根据所述第五流描述信息制定第三PCC规则。
在本发明的实施例中，所述系统还包括：
PCEF，设置为接收所述PCRF提供的携带插入指示的PCC规则，当所述PCEF根据所述PCC规则检测到所述数据包时，在所述数据包中插入所述UE的所述私网IP地址和所述私网源端口号；或者，
TDF，设置为接收所述PCRF提供的携带插入指示的ADC规则，当所述TDF根据所述 ADC规则检测到所述数据包时，在所述数据包中插入所述UE的所述私网IP地址和所述私网源端口号。
根据本发明的另一个实施例，还提供了一种PC或AAC装置，包括：
第一接收模块，设置为接收AF发送的私网IP地址、私网源端口号以及第一流描述信息；
第一修改模块，设置为将所述第一流描述信息中的源地址修改为所述私网IP地址，将所述第一流描述信息中的源端口号修改为所述私网源端口号，生成第二流描述信息；
第一发送模块，设置为将所述第二流描述信息发送给PCRF。
根据本发明的另一个实施例，还提供了一种PCRF装置，包括：
第二接收模块，设置为接收AF发送的私网IP地址、私网源端口号以及第三流描述信息；
制定模块，设置为根据所述私网IP地址、所述私网源端口号以及所述第三流描述信息制定第二PCC规则，其中，所述第二PCC规则中的业务数据过滤器通过以下方式生成：将所述第三流描述信息中的源地址修改为所述私网IP地址，并将源端口号修改为所述私网源端口号。
根据本发明的另一个实施例，还提供了一种AF装置，包括：
获取模块，设置为从数据包中获取私网IP地址、私网源端口号以及第四流描述信息；
第二修改模块，设置为将所述第四流描述信息中的源地址修改为所述私网IP地址，将所述第四流描述信息中的源端口号修改为所述私网源端口号，生成第五流描述信息后提供给PCRF；
第二发送模块，设置为将所述第五流描述信息发送给PCRF。
通过本发明，采用协议转换器PC或应用接入控制AAC接收应用功能AF发送的用户设备UE的私网IP地址、私网源端口号以及第一流描述信息，该PC或该AAC将该第一流描述信息中的源地址修改为该私网IP地址，将该第一流描述信息中的源端口号修改为该私网源端口号，生成第二流描述信息，该PC或该AAC向PCRF发送该第二流描述信息，该PCRF根据该第二流描述信息制定第一PCC规则，解决了用户终端针对一个业务同时发起的多个业务访问可能无法进行正确的资源预留和资源控制的问题，实现了用户终端对一个业务同时发起的多个业务访问的资源预留和控制。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是根据相关技术的PCC架构示意图；
图2是根据相关技术的AAC的PCC架构示意图；
图3是根据相关技术的NAT的PCC架构示意图；
图4是根据本发明实施例的一种策略规则制定方法的流程图；
图5是根据本发明实施例的一种PC或AAC装置的结构框图；
图6是根据本发明实施例的一种PCRF装置的结构框图；
图7是根据本发明实施例的一种AF装置的结构框图
图8是根据本发明优选实施例的实现PCRF制定PCC规则的流程图一；
图9是根据本发明优选实施例的实现PCRF制定PCC规则的流程图二。
具体实施方式
下文中将参考附图并结合实施例来详细说明本发明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是，本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
在本实施例中提供了一种策略规则制定方法，图4是根据本发明实施例的一种策略规则制定方法的流程图，如图4所示，该流程包括如下步骤：
步骤S402，协议转换器PC或应用接入控制AAC接收应用功能AF发送的用户设备UE的私网IP地址、私网源端口号以及第一流描述信息，该PC或该AAC将该第一流描述信息中的源地址修改为该私网IP地址，将该第一流描述信息中的源端口号修改为该私网源端口号，生成第二流描述信息；
步骤S404，该PC或该AAC向策略和计费规则功能PCRF发送该第二流描述信息，以便于PCRF根据该第二流描述信息制定第一PCC规则。
通过上述步骤，协议转换器PC或应用接入控制AAC接收应用功能AF发送的用户设备UE的私网IP地址、私网源端口号以及第一流描述信息，该PC或该AAC将该第一流描述信息中的源地址修改为该私网IP地址，将该第一流描述信息中的源端口号修改为该私网源端口号，生成第二流描述信息；该PC或该AAC向PCRF发送该第二流描述信息,该PCRF根据该第二流描述信息制定第一PCC规则，解决了用户终端针对一个业务同时发起的多个业务访问可能无法进行正确的资源预留和资源控制的问题，实现了用户终端对一个业务同时发起的多个业务访问的资源预留和控制。
在本实施例中，该第一流描述信息的源地址为经过网络地址转换功能NAT转换后的公网IP地址，源端口号为经过NAT转换后的公网源端口号。
在本实施例中，协议转换器PC或应用接入控制AAC接收应用功能AF发送的用户设备 UE的私网IP地址、私网源端口号以及第一流描述信息之前，该AF获取该私网IP地址和该私网源端口号的方式包括以下之一：
应用检测功能根据PCRF下发的业务检测规则中的指示在数据包中插入该UE的该私网IP地址和该私网源端口号，该AF从该数据包中获取该私网IP地址和该私网源端口号；或者，
该UE在数据包中插入该私网IP地址和该私网源端口号，该AF从该数据包中获取该私网IP地址和该私网源端口号。
在本实施例中，应用检测功能根据PCRF下发的业务检测规则中的指示在数据包中插入该UE的该私网IP地址和该私网源端口号包括以下之一：
若该应用检测功能为策略计费执行功能PCEF时，该PCRF在向该PCEF提供的PCC规则中携带插入指示，当该PCEF根据该PCC规则检测到该数据包时，在该数据包中插入该UE的该私网IP地址和该私网源端口号；或者，
若该应用检测功能为业务检测功能TDF时，该PCRF在向该TDF提供的应用检测控制ADC规则中携带插入指示，当该TDF根据该ADC规则检测到该数据包时，在该数据包中插入该UE的私网IP地址和私网源端口号。
在本发明实施例中，还提供了一种策略规则制定方法，包括：
PCRF接收AF发送的用户设备UE的私网IP地址、私网源端口号以及第三流描述信息；
该PCRF根据该私网IP地址、该私网源端口号以及该第三流描述信息制定第二PCC规则，其中，该第二PCC规则中的业务数据过滤器通过以下方式生成：将该第三流描述信息中的源地址修改为该私网IP地址，并将源端口号修改为该私网源端口号。
在本实施例中，该第三流描述信息的源地址为经过网络地址转换功能NAT转换后的公网IP地址，源端口号为经过NAT转换后的公网源端口号。
在本实施例中，PCRF接收AF发送的用户设备UE的私网IP地址、私网源端口号以及第三流描述信息之前，获取该私网IP地址和该私网源端口号的方式包括以下之一：
应用检测功能根据PCRF下发的业务检测规则中的指示在数据包中插入该UE的该私网IP地址和该私网源端口号，该AF从该数据包中获取该私网IP地址和该私网源端口号；或者，
该UE在数据包中插入该私网IP地址和该私网源端口号，该AF从该数据包中获取该私网IP地址和该私网源端口号。
在本实施例中，应用检测功能根据PCRF下发的业务检测规则中的指示在数据包中插入该UE的该私网IP地址和该私网源端口号包括以下之一：
若该应用检测功能为PCEF时，该PCRF在向该PCEF提供的PCC规则中携带插入指示，当该PCEF根据该PCC规则检测到该数据包时，在该数据包中插入该UE的该私网IP地址和该私网源端口号；或者，
若该应用检测功能为TDF时，该PCRF在该TDF提供的ADC规则中携带插入指示，当该TDF根据该ADC规则检测到该数据包时，在该数据包中插入该UE的私网IP地址和私网源端口号。
在本发明实施例中，还提供了一种策略规则制定方法，包括：
PCRF接收第五流描述信息，其中，AF从数据包中获取私网IP地址、私网源端口号以及第四流描述信息，该AF将该第四流描述信息中的源地址修改为该私网IP地址，将该第四流描述信息中的源端口号修改为该私网源端口号，生成该第五流描述信息；
该PCRF根据该第五流描述信息制定第三PCC规则。
在本实施例中，该第四流描述信息的源地址为经过网络地址转换功能NAT转换后的公网IP地址，源端口号为经过NAT转换后的公网源端口号。
在本实施例中，该AF从该数据包中获取该私网IP地址、该私网源端口号以及该第四流描述信息的方式包括以下之一：
应用检测功能根据该PCRF下发的业务检测规则中的指示在该数据包中插入该UE的该私网IP地址和该私网源端口号，该AF从该数据包中获取该私网IP地址和该私网源端口号；或者，
该UE在该数据包中插入该私网IP地址和该私网源端口号，该AF从该数据包中获取该私网IP地址和该私网源端口号。
在本实施例中，该应用检测功能根据该PCRF下发的该业务检测规则中的指示在数据包中插入该UE的该私网IP地址和该私网源端口号包括以下之一：
若该应用检测功能为PCEF时，该PCRF在向该PCEF提供的PCC规则中携带插入指示，当该PCEF根据该PCC规则检测到该数据包时，在该数据包中插入该UE的该私网IP地址和该私网源端口号；或者，
若该应用检测功能为TDF时，该PCRF在向该TDF提供的ADC规则中携带插入指示，当该TDF根据该ADC规则检测到该数据包时，在该数据包中插入该UE的私网IP地址和私网源端口号。
在本发明实施例中，还提供了一种策略规则制定系统，包括：
PC或AAC，设置为接收AF发送的私网IP地址、私网源端口号以及第一流描述信息，将该第一流描述信息中的源地址修改为该私网IP地址，将该第一流描述信息中的源端口号修改为该私网源端口号，生成第二流描述信息后，将该第二流描述信息发送给PCRF；
PCRF，设置为接收该PC或该AAC发送的该第二流描述信息，并根据该第二流描述信息制定第一PCC规则。
在本实施例中，该AF还设置为从数据包中获取该私网IP地址和该私网源端口号。
在本实施例中，该系统还包括：
PCEF，设置为接收该PCRF提供的携带插入指示的PCC规则，当该PCEF根据该PCC规则检测到该数据包时，在该数据包中插入该UE的该私网IP地址和该私网源端口号；或者，
TDF，设置为接收该PCRF提供的携带插入指示的ADC规则，当该TDF根据该ADC规则检测到该数据包时，在该数据包中插入该UE的该私网IP地址和该私网源端口号。
在本发明实施例中，还提供了一种策略规则制定系统，包括：
PCRF，设置为接收AF发送的根据私网IP地址、私网源端口号以及第三流描述信息制定第二PCC规则，其中，该第二PCC规则中的业务数据过滤器通过以下方式生成：将该第三流描述信息中的源地址修改为该私网IP地址，并将源端口号修改为该私网源端口号。。
在本实施例中，该AF还设置为从数据包中获取该私网IP地址和该私网源端口号。
在本实施例中，该系统还包括：
PCEF，设置为接收该PCRF提供的携带插入指示的PCC规则，当该PCEF根据该PCC规则检测到该数据包时，在该数据包中插入该UE的该私网IP地址和该私网源端口号；或者，
TDF，设置为接收该PCRF提供的携带插入指示的ADC规则，当该TDF根据该ADC规则检测到该数据包时，在该数据包中插入该UE的该私网IP地址和该私网源端口号。
在本发明实施例中，还提供了一种策略规则制定系统，其中，包括：
AF，设置为从数据包中获取私网IP地址、私网源端口号以及第四流描述信息，并将该第四流描述信息中的源地址修改为该私网IP地址，将该第四流描述信息中的源端口号修改为该私网源端口号，生成第五流描述信息后提供给PCRF；
PCRF，设置为根据该第五流描述信息制定第三PCC规则。
在本实施例中，该系统还包括：
PCEF，设置为接收该PCRF提供的携带插入指示的PCC规则，当该PCEF根据该PCC规则检测到该数据包时，在该数据包中插入该UE的该私网IP地址和该私网源端口号；或者，
TDF，设置为接收该PCRF提供的携带插入指示的ADC规则，当该TDF根据该ADC规则检测到该数据包时，在该数据包中插入该UE的该私网IP地址和该私网源端口号。
图5是根据本发明实施例的一种PC或AAC装置的结构框图，如图5所示，该装置包括：
第一接收模块52，设置为接收AF发送的私网IP地址、私网源端口号以及第一流描述信息；
第一修改模块54，设置为将该第一流描述信息中的源地址修改为该私网IP地址，将该第一流描述信息中的源端口号修改为该私网源端口号，生成第二流描述信息；
第一发送模块56，设置为将该第二流描述信息发送给PCRF。
图6是根据本发明实施例的一种PCRF装置的结构框图，如图6所示，该装置包括：
第二接收模块62，设置为接收AF发送的私网IP地址、私网源端口号以及第三流描述信息；
制定模块64，设置为根据该私网IP地址、该私网源端口号以及该第三流描述信息制定第二PCC规则，其中，该第二PCC规则中的业务数据过滤器通过以下方式生成：将该第三流描述信息中的源地址修改为该私网IP地址，并将源端口号修改为该私网源端口号。
图7是根据本发明实施例的一种AF装置的结构框图，如图7所示，该装置包括：
获取模块72，设置为从数据包中获取私网IP地址、私网源端口号以及第四流描述信息；
第二修改模块74，设置为将该第四流描述信息中的源地址修改为该私网IP地址，将该第四流描述信息中的源端口号修改为该私网源端口号，生成第五流描述信息后提供给PCRF；
第二发送模块76，设置为将该第五流描述信息发送给PCRF。
在本实施例中，该第一流描述信息的源地址为经过网络地址转换功能NAT转换后的公网IP地址，源端口号为经过NAT转换后的公网源端口号。
在本实施例中，该AF向该PC或AAC发送私网IP地址、私网源端口号以及流描述信息之前，该AF获取该私网IP地址和该私网源端口号的方式包括以下之一：
应用检测功能根据PCRF下发的业务检测规则中的指示在数据包中插入该UE的该私网IP地址和该私网源端口号，该AF从该数据包中获取该私网IP地址和该私网源端口号；或者，
该UE在数据包中插入该私网IP地址和该私网源端口号，该AF从该数据包中获取该私网IP地址和该私网源端口号。
在本实施例中，应用检测功能根据PCRF下发的业务检测规则中的指示在数据包中插入该UE的该私网IP地址和该私网源端口号，该AF从该数据包中获取该私网IP地址和该私网源端口号包括以下之一：
若该应用检测功能为策略计费执行功能PCEF时，该PCRF在向该PCEF提供的PCC规则中携带插入指示，当该PCEF根据该PCC规则检测到该数据包时，在该数据包中插入该UE的该私网IP地址和该私网源端口号，该AF获取该私网IP地址和该私网源端口号；或者，
若该应用检测功能为业务检测功能TDF时，该PCRF在向该TDF提供的ADC规则中携带插入指示，当该TDF根据该ADC规则检测到该数据包时，在该数据包中插入该UE的私网IP地址和私网源端口号，该AF获取该私网IP地址和该私网源端口号。
在本实施例中还提供了一种策略规则制定方法，包括：
AF向PCRF发送用户设备UE的私网IP地址、私网源端口号以及第三流描述信息，该 PCRF根据该私网IP地址、该私网源端口号以及该第三流描述信息制定第二PCC规则，其中该第二PCC规则中的业务数据过滤器为该第三流描述信息经过将源地址修改为该私网IP地址，将源端口号修改为该私网源端口号生成。
在本实施例中，该第三流描述信息的源地址为经过网络地址转换功能NAT转换后的公网IP地址，源端口号为经过NAT转换后的公网源端口号。
在本实施例中，该AF向该PCRF发送该私网IP地址、私网源端口号以及该第三流描述信息之前，获取该私网IP地址和该私网源端口号的方式包括以下之一：
应用检测功能根据PCRF下发的业务检测规则中的指示在数据包中插入该UE的该私网IP地址和该私网源端口号，该AF从该数据包中获取该私网IP地址和该私网源端口号；或者，
该UE在数据包中插入该私网IP地址和该私网源端口号，该AF从该数据包中获取该私网IP地址和该私网源端口号。
在本实施例中，应用检测功能根据PCRF下发的业务检测规则中的指示在数据包中插入该UE的该私网IP地址和该私网源端口号，该AF从该数据包中获取该私网IP地址和该私网源端口号包括以下之一：
若该应用检测功能为PCEF时，该PCRF在向该PCEF提供的PCC规则中携带插入指示，当该PCEF根据该PCC规则检测到该数据包时，在该数据包中插入该UE的该私网IP地址和该私网源端口号，该AF获取该私网IP地址和该私网源端口号；或者，
若该应用检测功能为TDF时，该PCRF在向业务检测功能TDF提供的ADC规则中携带插入指示，当该TDF根据该ADC规则检测到该数据包时，在该数据包中插入该UE的私网IP地址和私网源端口号，该AF获取该私网IP地址和该私网源端口号。
在本实施例中还提供了一种策略规则制定方法，包括：
AF从数据包中获取私网IP地址、私网源端口号以及第四流描述信息，该AF将该第四流描述信息中的源地址修改为该私网IP地址，将该第四流描述信息中的源端口号修改为该私网源端口号，生成第五流描述信息后提供给PCRF；
该PCRF根据该第五流描述信息制定第三PCC规则。
在本实施例中，该第四流描述信息的源地址为经过网络地址转换功能NAT转换后的公网IP地址，源端口号为经过NAT转换后的公网源端口号。
在本实施例中，该AF从该数据包中获取该私网IP地址、该私网源端口号以及该第四流描述信息的方式包括以下之一：
应用检测功能根据该PCRF下发的业务检测规则中的指示在该数据包中插入该UE的该私网IP地址和该私网源端口号，该AF从该数据包中获取该私网IP地址和该私网源端口号；或者，
该UE在该数据包中插入该私网IP地址和该私网源端口号，该AF从该数据包中获取该私网IP地址和该私网源端口号。
在本实施例中，该应用检测功能根据该PCRF下发的该业务检测规则中的指示在数据包中插入该UE的该私网IP地址和该私网源端口号，该AF从该数据包中获取该私网IP地址和该私网源端口号包括以下之一：
若该应用检测功能为PCEF时，该PCRF在向该PCEF提供的PCC规则中携带插入指示，当该PCEF根据该PCC规则检测到该数据包时，在该数据包中插入该UE的该私网IP地址和该私网源端口号，该AF获取该私网IP地址和该私网源端口号；或者，
若该应用检测功能为TDF时，该PCRF在向业务检测功能TDF提供的ADC规则中携带插入指示，当该TDF根据该ADC规则检测到该数据包时，在该数据包中插入该UE的私网IP地址和私网源端口号，该AF获取该私网IP地址和该私网源端口号。
在本实施例中还提供了一种策略规则制定系统，包括：
AF，设置为向AAC提供私网IP地址、私网源端口号以及第一流描述信息；
PC或AAC，设置为接收该AF发送的该私网IP地址、该私网源端口号以及该第一流描述信息，将该第一流描述信息中的源地址修改为该私网IP地址，将该第一流描述信息中的源端口号修改为该私网源端口号，生成第二流描述信息后，将该第二流描述信息发送给PCRF；
PCRF，设置为该PC或该AAC发送的该第二流描述信息，并根据该第二流描述信息制定第一PCC规则。
在本实施例中，该AF还设置为从数据包中获取该私网IP地址和该私网源端口号。
在本实施例中，PCEF，设置为接收该PCRF提供的携带插入指示的PCC规则，当该PCEF根据该PCC规则检测到该数据包时，在该数据包中插入该UE的该私网IP地址和该私网源端口号；或者，
TDF，设置为接收该PCRF提供的携带插入指示的ADC规则，当该TDF根据该ADC规则检测到该数据包时，在该数据包中插入该UE的该私网IP地址和该私网源端口号。
在本实施例中还提供了一种策略规则制定系统，包括：
AF，设置为向PCRF发送用户设备UE的私网IP地址、私网源端口号以及第三流描述信息，
PCRF，设置为根据该私网IP地址、该私网源端口号以及该第三流描述信息制定第二PCC规则，其中该第二PCC规则中的业务数据过滤器为该第三流描述信息经过将源地址修改为该私网IP地址，将源端口号修改为该私网源端口号生成。
在本实施例中，该AF还设置为从数据包中获取该私网IP地址和该私网源端口号。
在本实施例中，PCEF，设置为接收该PCRF提供的携带插入指示的PCC规则，当该PCEF根据该PCC规则检测到该数据包时，在该数据包中插入该UE的该私网IP地址和该私网源端口号；或者，
TDF，设置为接收该PCRF提供的携带插入指示的ADC规则，当该TDF根据该ADC规则检测到该数据包时，在该数据包中插入该UE的该私网IP地址和该私网源端口号。
在本实施例中还提供了一种策略规则制定系统，包括：
AF，设置为从数据包中获取私网IP地址、私网源端口号以及第四流描述信息，并将该第四流描述信息中的源地址修改为该私网IP地址，将该第四流描述信息中的源端口号修改为该私网源端口号，生成第五流描述信息后提供给PCRF；
PCRF，设置为根据该第五流描述信息制定第三PCC规则。
在本实施例中，PCEF，设置为接收该PCRF提供的携带插入指示的PCC规则，当该PCEF根据该PCC规则检测到该数据包时，在该数据包中插入该UE的该私网IP地址和该私网源端口号；或者，
TDF，设置为接收该PCRF提供的携带插入指示的ADC规则，当该TDF根据该ADC规则检测到该数据包时，在该数据包中插入该UE的该私网IP地址和该私网源端口号。
在本实施例中还提供了一种PC或AAC装置以及PCRF装置，该装置用于实现上述实施例及优选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
下面结合优选实施例对本发明进行详细说明。
实施例1
在本优选实施例中，应用功能AF通过PC/AAC向PCRF提供私网源端口号,PCRF制定不同的PCC规则实现对业务数据流的资源预留和QoS控制。(在本发明实施例中，源IP地址、源端口号以及目的IP地址、目的端口号都是针对上行方向而言)。
图8是根据本发明优选实施例的实现PCRF制定PCC规则的流程图一，如图8所示，
步骤801：UE附着到网络，建立IP-CAN会话。在这个过程中，PCEF与PCRF之间建立用于策略和计费控制的Gx会话。若IP-CAN会话涉及BBERF，则BBERF与PCRF之间建立用于策略控制的网关控制会话。PCRF在向PCEF提供的PCC规则中携带插入指示，即当PCEF根据PCC规则检测到特定的业务数据流时，在数据包中插入UE的私网IP地址和该业务数据流的私网源端口号。
步骤802：UE发起业务访问，PCEF根据PCC规则检测到UE发起的特定的业务数据流后，在该业务的数据包中添加UE的私网IP地址和私网源端口号(表示为私网源端口1)。业 务的数据包经过NAT后，数据包头的五元组中的源IP地址(即UE的私网IP地址)和源端口号(即私网源端口号1)被NAT转换为公网IP地址和公网源端口号(表示为公网源端口号1)。应用服务器获取数据包五元组以及PCEF在数据包中添加的UE的私网IP地址和私网源端口号1。
步骤803：AF向AAC发送HTTP POST消息，消息中携带业务描述信息，公网IP地址，私网IP地址，私网源端口号1。其中业务描述信息中的包含业务描述信息标识1，流描述信息、媒体类型、请求的带宽信息。其中流描述信息即为步骤802中应用服务器获取的数据包的五元组。
步骤804：AAC调整业务描述中的流描述信息，将源地址修改为私网IP地址，源端口号修改为私网源端口1。
步骤805：AAC向PCRF发送AAR消息，消息中携带业务流描述信息和私网IP地址；
步骤806：PCRF保存信息后，返回确认消息；
步骤807：AAC向AF返回确认消息；
步骤808：PCRF根据业务信息、网络策略以及用户签约等信息制定PCC规则1，其中PCC规则1中的携带的流描述信息(也称业务过滤器模板)为AAC提供的流描述信息。PCC规则1中携带的QoS信息包括QoS分类标识(QoS Class Identifier，简称为QCI)、分配和保持优先级(Allocation And Retention Priority，简称为ARP)。若PCRF制定的QCI为GBR-QCI，则QoS信息中包括保证比特速率(Guaranteed Bit Rate，简称为GBR)和最大比特速率(Maximum Bit Rate，简称为MBR)；若PCRF制定的QCI为非保证比特速率(Non-GBR)QCI，则QoS信息中可包括MBR。若BBERF存在，则PCRF还根据PCC规则1制定QoS规则1.
步骤809：PCRF向BBERF提供QoS规则1；
步骤810：PCRF向PCEF提供PCC规则1；
步骤811：UE再次发起同一个业务的访问，PCEF根据PCC规则再次检测到UE发起的特定的业务数据流后，在该业务的数据包中添加UE的私网IP地址和该业务数据流的私网源端口号(表示为私网源端口号2)。业务的数据包经过NAT后，数据包的五元组中的源IP地址(即UE的私网IP地址)和源端口号(即私网源端口号2)被NAT转换为公网IP地址和源公网端口号(表示为公网源端口号2)。应用服务器获取数据包五元组以及PCEF在数据包中添加的UE的私网IP地址和私网源端口号2。由于UE访问的是同一个业务，因此五元组中的目的IP地址和目的端口号和步骤802中的五元组的目的IP地址和目的端口号是一样的。
步骤812：AF向AAC发送HTTP PUT消息，消息中携带业务描述信息，公网IP地址，私网IP地址，私网源端口号2。其中业务描述信息中的包含业务描述信息标识2，流描述信息、媒体类型、请求的带宽信息。其中流描述信息即为步骤811中获取的数据包的五元组。
步骤813：AAC调整业务描述中的流描述信息，将源地址修改为私网IP地址，源端口号 修改为私网源端口2。
步骤814：AAC向PCRF发送AAR消息，消息中携带业务流描述信息和私网IP地址；
步骤815：PCRF保存信息后，返回确认消息；
步骤816：AAC向AF返回确认消息；
步骤817：PCRF根据业务信息、网络策略以及用户签约等信息制定PCC规则2，其中PCC规则2中的携带的流描述信息(也称业务过滤器模板)为AAC提供的流描述信息。PCC规则2中携带的QoS信息包括QCI、ARP。若PCRF制定的QCI为GBR-QCI，则QoS信息中包括GBR和MBR；若PCRF制定的QCI为Non-GBR QCI，则QoS信息中可包括MBR。若BBERF存在，则PCRF还根据PCC规则2制定QoS规则2.
步骤818：PCRF向BBERF提供QoS规则2；
步骤819：PCRF向PCEF提供PCC规则2；
由于上述流程中，PCRF在PCC规则1和PCC规则2中携带了不同的流描述信息，因此PCEF可以根据PCC规则1和PCC规则2分别进行资源预留，并且对同一个业务的2次访问分别进行数据过滤和控制。
在上述实施例中，由AAC进行流描述信息的调整，在其他实施例中，也可由AF或PCRF进行流描述信息的调整。由AF进行调整的实现为：AF向AAC提供的流描述信息就将源地址设置为UE的私网IP地址，源端口号设置为私网源端口号，这样AAC就不需要进一步调整，也不需要将外带的私网源端口号发送给PCRF了；由PCRF进行调整的实现为：首先AAC直接把从AF获取的所有信息发送给PCRF，PCRF在制定PCC规则，将PCC规则中的流描述信息中的源IP地址设置为UE的私网IP地址，源端口号设置为私网源端口号。
实施例2
在本优选实施例中，应用功能AF向PCRF提供私网源端口号,PCRF制定不同的PCC规则实现对业务数据流的资源预留和QoS控制。
图9是根据本发明优选实施例的实现PCRF制定PCC规则的流程图二，如图9所示，
步骤901：UE附着到网络，建立IP-CAN会话。在这个过程中，PCEF与PCRF之间建立用于策略和计费控制的Gx会话。若IP-CAN会话涉及BBERF，则BBERF与PCRF之间建立用于策略控制的网关控制会话。PCRF在向PCEF提供的PCC规则中携带插入指示。即当PCEF根据PCC规则检测到特定的业务数据流时，在数据包中插入UE的私网IP地址和私网源端口号。
步骤902：UE发起业务访问，PCEF根据PCC规则检测到UE发起的特定的业务数据流后，在该业务的数据包中添加UE的私网IP地址和私网源端口号(表示为私网源端口号1)。业务的数据包经过NAT后，数据包的五元组中的源IP地址(即UE的私网IP地址)和源端 口号(即私网源端口号1)被NAT转换为公网IP地址和源公网端口号(表示为源公网端口号1)。应用服务器获取数据包五元组以及PCEF在数据包中添加的UE的私网IP地址和私网源端口号1.
步骤903：AF向PCRF发送AAR消息，消息中携带业务描述信息，公网IP地址，私网IP地址，私网源端口号1。其中业务描述信息中的包含业务描述信息标识1，流描述信息、媒体类型、请求的带宽信息。其中流描述信息即为步骤902应用服务器获得的数据包的五元组。
步骤904：PCRF保存信息后，返回确认消息；
步骤905：PCRF根据业务信息、网络策略以及用户签约等信息制定PCC规则1，其中PCC规则1中的携带的流描述信息(即业务过滤器模板)为PCRF根据AF提供的业务描述信息中将源地址修改为UE私网IP地址，源端口号修改为私网源端口号1。PCC规则1中携带的QoS信息包括QoS分类标识(QoS Class Identifier，简称为QCI)、分配和保持优先级(Allocation And Retention Priority，简称为ARP)。若PCRF制定的QCI为GBR-QCI，则QoS信息中包括保证比特速率(Guaranteed Bit Rate，简称为GBR)和最大比特速率(Maximum Bit Rate，简称为MBR)；若PCRF制定的QCI为非保证比特速率(Non-GBR)QCI，则QoS信息中可包括MBR。若BBERF存在，则PCRF还根据PCC规则1制定QoS规则1.
步骤906：PCRF向BBERF提供QoS规则1；
步骤907：PCRF向PCEF提供PCC规则1；
步骤908：UE再次发起同一个业务的访问，PCEF根据PCC规则再次检测到UE发起的特定的业务数据流后，在该业务的数据包中添加UE的私网IP地址和私网源端口号(表示为私网源端口号2)。业务的数据包经过NAT后，数据包头的五元组中的源IP地址(即UE的私网IP地址)和源端口号(即私网源端口号2)被NAT转换为公网IP地址和源公网端口号(表示为源公网端口号2)。应用服务器获取数据包五元组以及PCEF在数据包中添加的UE的私网IP地址和私网源端口号2。由于UE访问的是同一个业务，因此五元组中的目的IP地址和目的端口号和步骤902是一样的。
步骤909：AF向PCRF发送AAR消息，消息中携带业务描述信息，公网IP地址，私网IP地址，私网源端口号2。其中业务描述信息中的包含业务描述信息标识2，流描述信息、媒体类型、请求的带宽信息。其中流描述信息即为步骤908中获取的数据包的五元组。
步骤910：PCRF保存信息后，返回确认消息；
步骤911：PCRF根据业务信息、网络策略以及用户签约等信息制定PCC规则2，其中PCC规则2中的携带的流描述信息为PCRF根据AF提供的业务描述信息中将源地址修改为私网IP地址，源端口号修改为私网源端口2。PCC规则2中携带的QoS信息包括QCI、ARP。若PCRF制定的QCI为GBR-QCI，则QoS信息中包括GBR和MBR；若PCRF制定的QCI为Non-GBR QCI，则QoS信息中可包括MBR。若BBERF存在，则PCRF还根据PCC规则2制定QoS规则2.
步骤912：可选地，PCRF向BBERF提供QoS规则2；
步骤913：PCRF向PCEF提供PCC规则2；
由于上述流程中，PCRF在PCC规则1和PCC规则2中携带了不同的流描述信息，因此PCEF可以根据PCC规则1和PCC规则2分别进行资源预留，并且对同一个业务的2次访问分别进行数据过滤和控制。
在上述实施例中，有PCRF对流描述信息进行调整，在其他实施例中，也可由AF。即AF向PCRF提供的流描述信息就将源地址设置为UE的私网IP地址，源端口号设置为私网源端口号，这样AF也不需要将外带的私网源端口号发送给PCRF了。
在实施例1和实施例2中，PCEF根据PCC规则的指示在数据包中插入UE的私网IP地址和私网源端口号。在其他实施例中，也可以有TDF根据PCRF下发的ADC规则中的插入指示在数据包中插入UE的私网IP地址和私网源端口号。即对于网络部署TDF的场景，在IP-CAN会话建立的过程中，PCRF将携带有插入指示的ADC规则下发给TDF，当TDF根据ADC规则检测到业务数据流(也称应用)时，则TDF在该业务数据流的数据包中插入UE的私网IP地址和私网源端口号
在实施例1和实施例2中，PCEF根据PCC规则的指示在数据包中插入UE的私网IP地址和私网源端口号。在其他实现中，可以由UE主动在数据包中插入UE的私网IP地址和私网源端口号，AF同样从数据包中可以获取上述两个信息。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本发明各个实施例所述的方法。
本发明的实施例还提供了一种存储介质。可选地，在本实施例中，上述存储介质可以被设置为存储用于执行上述实施例方法的程序代码：
可选地，在本实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
可选地，在本实施例中，处理器根据存储介质中已存储的程序代码执行上述实施例的方法。
显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置 中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
工业实用性
基于本发明实施例提供的上述技术方案，协议转换器PC或应用接入控制AAC接收应用功能AF发送的用户设备UE的私网IP地址、私网源端口号以及第一流描述信息，该PC或该AAC将该第一流描述信息中的源地址修改为该私网IP地址，将该第一流描述信息中的源端口号修改为该私网源端口号，生成第二流描述信息，该PC或该AAC向PCRF发送该第二流描述信息，该PCRF根据该第二流描述信息制定第一PCC规则，解决了用户终端针对一个业务同时发起的多个业务访问可能无法进行正确的资源预留和资源控制的问题，实现了用户终端对一个业务同时发起的多个业务访问的资源预留和控制。

Claims (23)

  1. 一种策略规则制定方法，包括：
    协议转换器PC或应用接入控制AAC接收应用功能AF发送的用户设备UE的私网IP地址、私网源端口号以及第一流描述信息，所述PC或所述AAC将所述第一流描述信息中的源地址修改为所述私网IP地址，将所述第一流描述信息中的源端口号修改为所述私网源端口号，生成第二流描述信息；
    所述PC或所述AAC向策略和计费规则功能PCRF发送所述第二流描述信息，以便于所述PCRF根据所述第二流描述信息制定第一PCC规则。
  2. 根据权利要求1所述的方法，其中，该方法还包括：
    所述第一流描述信息的源地址为经过网络地址转换功能NAT转换后的公网IP地址，源端口号为经过NAT转换后的公网源端口号。
  3. 根据权利要求1所述的方法，其中，协议转换器PC或应用接入控制AAC接收应用功能AF发送的用户设备UE的私网IP地址、私网源端口号以及第一流描述信息之前，所述AF获取所述私网IP地址和所述私网源端口号的方式包括以下之一：
    应用检测功能根据PCRF下发的业务检测规则中的指示在数据包中插入所述UE的所述私网IP地址和所述私网源端口号，所述AF从所述数据包中获取所述私网IP地址和所述私网源端口号；或者，
    所述UE在数据包中插入所述私网IP地址和所述私网源端口号，所述AF从所述数据包中获取所述私网IP地址和所述私网源端口号。
  4. 根据权利要求3所述的方法，其中，应用检测功能根据PCRF下发的业务检测规则中的指示在数据包中插入所述UE的所述私网IP地址和所述私网源端口号包括以下之一：
    若所述应用检测功能为策略计费执行功能PCEF时，所述PCRF在向所述PCEF提供的PCC规则中携带插入指示，当所述PCEF根据所述PCC规则检测到所述数据包时，在所述数据包中插入所述UE的所述私网IP地址和所述私网源端口号；或者，
    若所述应用检测功能为业务检测功能TDF时，所述PCRF在向所述TDF提供的应用检测控制ADC规则中携带插入指示，当所述TDF根据所述ADC规则检测到所述数据包时，在所述数据包中插入所述UE的私网IP地址和私网源端口号。
  5. 一种策略规则制定方法，包括：
    PCRF接收AF发送的用户设备UE的私网IP地址、私网源端口号以及第三流描述信息；
    所述PCRF根据所述私网IP地址、所述私网源端口号以及所述第三流描述信息制定第二PCC规则，其中，所述第二PCC规则中的业务数据过滤器通过以下方式生成：将所述第三流描述信息中的源地址修改为所述私网IP地址，并将源端口号修改为所述私网源 端口号。
  6. 根据权利要求5所述的方法，其中，该方法还包括：
    所述第三流描述信息的源地址为经过网络地址转换功能NAT转换后的公网IP地址，源端口号为经过NAT转换后的公网源端口号。
  7. 根据权利要求5所述的方法，其中，PCRF接收AF发送的用户设备UE的私网IP地址、私网源端口号以及第三流描述信息之前，获取所述私网IP地址和所述私网源端口号的方式包括以下之一：
    应用检测功能根据PCRF下发的业务检测规则中的指示在数据包中插入所述UE的所述私网IP地址和所述私网源端口号，所述AF从所述数据包中获取所述私网IP地址和所述私网源端口号；或者，
    所述UE在数据包中插入所述私网IP地址和所述私网源端口号，所述AF从所述数据包中获取所述私网IP地址和所述私网源端口号。
  8. 根据权利要求7所述的方法，其中，应用检测功能根据PCRF下发的业务检测规则中的指示在数据包中插入所述UE的所述私网IP地址和所述私网源端口号包括以下之一：
    若所述应用检测功能为PCEF时，所述PCRF在向所述PCEF提供的PCC规则中携带插入指示，当所述PCEF根据所述PCC规则检测到所述数据包时，在所述数据包中插入所述UE的所述私网IP地址和所述私网源端口号；或者，
    若所述应用检测功能为TDF时，所述PCRF在所述TDF提供的ADC规则中携带插入指示，当所述TDF根据所述ADC规则检测到所述数据包时，在所述数据包中插入所述UE的私网IP地址和私网源端口号。
  9. 一种策略规则制定方法，包括：
    PCRF接收第五流描述信息，其中，AF从数据包中获取私网IP地址、私网源端口号以及第四流描述信息，所述AF将所述第四流描述信息中的源地址修改为所述私网IP地址，将所述第四流描述信息中的源端口号修改为所述私网源端口号，生成所述第五流描述信息；
    所述PCRF根据所述第五流描述信息制定第三PCC规则。
  10. 根据权利要求9所述的方法，其中，该方法还包括：
    所述第四流描述信息的源地址为经过网络地址转换功能NAT转换后的公网IP地址，源端口号为经过NAT转换后的公网源端口号。
  11. 根据权利要求9所述的方法，其中，所述AF从所述数据包中获取所述私网IP地址、所述私网源端口号以及所述第四流描述信息的方式包括以下之一：
    应用检测功能根据所述PCRF下发的业务检测规则中的指示在所述数据包中插入用户设备UE的所述私网IP地址和所述私网源端口号，所述AF从所述数据包中获取所述私网IP地址和所述私网源端口号；或者，
    所述UE在所述数据包中插入所述私网IP地址和所述私网源端口号，所述AF从所述数据包中获取所述私网IP地址和所述私网源端口号。
  12. 根据权利要求11所述的方法，其中，所述应用检测功能根据所述PCRF下发的所述业务检测规则中的指示在数据包中插入所述UE的所述私网IP地址和所述私网源端口号包括以下之一：
    若所述应用检测功能为PCEF时，所述PCRF在向所述PCEF提供的PCC规则中携带插入指示，当所述PCEF根据所述PCC规则检测到所述数据包时，在所述数据包中插入所述UE的所述私网IP地址和所述私网源端口号；或者，
    若所述应用检测功能为TDF时，所述PCRF在向所述TDF提供的ADC规则中携带插入指示，当所述TDF根据所述ADC规则检测到所述数据包时，在所述数据包中插入所述UE的私网IP地址和私网源端口号。
  13. 一种策略规则制定系统，包括：
    PC或AAC，设置为接收AF发送的私网IP地址、私网源端口号以及第一流描述信息，将所述第一流描述信息中的源地址修改为所述私网IP地址，将所述第一流描述信息中的源端口号修改为所述私网源端口号，生成第二流描述信息后，将所述第二流描述信息发送给PCRF；
    PCRF，设置为接收所述PC或所述AAC发送的所述第二流描述信息，并根据所述第二流描述信息制定第一PCC规则。
  14. 根据权利要求13所述的系统，其中，包括：
    所述AF还设置为从数据包中获取所述私网IP地址和所述私网源端口号。
  15. 根据权利要求13所述的系统，其中，所述系统还包括：
    PCEF，设置为接收所述PCRF提供的携带插入指示的PCC规则，当所述PCEF根据所述PCC规则检测到所述数据包时，在所述数据包中插入所述UE的所述私网IP地址和所述私网源端口号；或者，
    TDF，设置为接收所述PCRF提供的携带插入指示的ADC规则，当所述TDF根据所述ADC规则检测到所述数据包时，在所述数据包中插入所述UE的所述私网IP地址和所述私网源端口号。
  16. 一种策略规则制定系统，，包括：
    PCRF，设置为接收AF发送的根据私网IP地址、私网源端口号以及第三流描述信息 制定第二PCC规则，其中，所述第二PCC规则中的业务数据过滤器通过以下方式生成：将所述第三流描述信息中的源地址修改为所述私网IP地址，并将源端口号修改为所述私网源端口号。
  17. 根据权利要求16所述的系统，其中：
    所述AF还设置为从数据包中获取所述私网IP地址和所述私网源端口号。
  18. 根据权利要求16所述的系统，其中，所述系统还包括：
    PCEF，设置为接收所述PCRF提供的携带插入指示的PCC规则，当所述PCEF根据所述PCC规则检测到所述数据包时，在所述数据包中插入用户设备UE的所述私网IP地址和所述私网源端口号；或者，
    TDF，设置为接收所述PCRF提供的携带插入指示的ADC规则，当所述TDF根据所述ADC规则检测到所述数据包时，在所述数据包中插入所述UE的所述私网IP地址和所述私网源端口号。
  19. 一种策略规则制定系统，包括：
    AF，设置为从数据包中获取私网IP地址、私网源端口号以及第四流描述信息，并将所述第四流描述信息中的源地址修改为所述私网IP地址，将所述第四流描述信息中的源端口号修改为所述私网源端口号，生成第五流描述信息后提供给PCRF；
    PCRF，设置为根据所述第五流描述信息制定第三PCC规则。
  20. 根据权利要求19所述的系统，其中，所述系统还包括：
    PCEF，设置为接收所述PCRF提供的携带插入指示的PCC规则，当所述PCEF根据所述PCC规则检测到所述数据包时，在所述数据包中插入用户设备UE的所述私网IP地址和所述私网源端口号；或者，
    TDF，设置为接收所述PCRF提供的携带插入指示的ADC规则，当所述TDF根据所述ADC规则检测到所述数据包时，在所述数据包中插入所述UE的所述私网IP地址和所述私网源端口号。
  21. 一种PC或AAC装置，包括：
    第一接收模块，设置为接收AF发送的私网IP地址、私网源端口号以及第一流描述信息；
    第一修改模块，设置为将所述第一流描述信息中的源地址修改为所述私网IP地址，将所述第一流描述信息中的源端口号修改为所述私网源端口号，生成第二流描述信息；
    第一发送模块，设置为将所述第二流描述信息发送给PCRF。
  22. 一种PCRF装置，其中，包括：
    第二接收模块，设置为接收AF发送的私网IP地址、私网源端口号以及第三流描述信息；
    制定模块，设置为根据所述私网IP地址、所述私网源端口号以及所述第三流描述信息制定第二PCC规则，其中，所述第二PCC规则中的业务数据过滤器通过以下方式生成：将所述第三流描述信息中的源地址修改为所述私网IP地址，并将源端口号修改为所述私网源端口号。
  23. 一种AF装置，包括：
    获取模块，设置为从数据包中获取私网IP地址、私网源端口号以及第四流描述信息；
    第二修改模块，设置为将所述第四流描述信息中的源地址修改为所述私网IP地址，将所述第四流描述信息中的源端口号修改为所述私网源端口号，生成第五流描述信息后提供给PCRF；
    第二发送模块，设置为将所述第五流描述信息发送给PCRF。
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