CN102238507A - Method and system for determining policy and charging rules function - Google Patents
Method and system for determining policy and charging rules function Download PDFInfo
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- CN102238507A CN102238507A CN2010101593913A CN201010159391A CN102238507A CN 102238507 A CN102238507 A CN 102238507A CN 2010101593913 A CN2010101593913 A CN 2010101593913A CN 201010159391 A CN201010159391 A CN 201010159391A CN 102238507 A CN102238507 A CN 102238507A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/04—Network management architectures or arrangements
- H04L41/046—Network management architectures or arrangements comprising network management agents or mobile agents therefor
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/66—Policy and charging system
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/25—Mapping addresses of the same type
- H04L61/2503—Translation of Internet protocol [IP] addresses
- H04L61/2514—Translation of Internet protocol [IP] addresses between local and global IP addresses
Abstract
The invention discloses a method and system for determining a policy and charging rules function (PCRF). A Diameter routing agent (DRA) obtains internet protocol (IP) address translation information, and performs PCRA selection and association by utilizing the obtained IP address translation information. Through use of the method for determining PCRF, the DRA can select the PCRF accurately according to messages on an interface Rx and an interface Gx under a context that a network address translator and the DRA are arranged simultaneously, thus strategic information association of policy and charging control (PCC) is accurately realized.
Description
Technical field
The present invention relates to strategy and the control formulation technology of chargeing, refer to a kind of method and system of definite "Policy and Charging Rules Function especially.
Background technology
Fig. 1 is existing EPC network of network structure chart, Fig. 2 is the system architecture diagram of existing EPC network, as depicted in figs. 1 and 2, third generation partner program (3GPP, 3rd Generation PartnershipProject) grouping system (EPS of evolution, Evolved Packet System) by the universal mobile telecommunications system land radio access web (E-UTRAN of evolution, Evolved Universal Terrestrial Radio AccessNetwork), mobile management unit (MME, Mobility Management Entity), gateway (S-GW, Serving Gateway), grouped data network gateway (PDN GW, Packet Data NetworkGateway, be also referred to as P-GW), home subscriber server (HSS, Home Subscriber Server), "Policy and Charging Rules Function (PCRF, Policy and Charging Rules Function) entity and other support nodes are formed.Wherein, E-UTRAN links to each other with MME by S1-MME, and MME links to each other with HSS by the S6a interface; S-GW is the accessing gateway equipment that links to each other with E-UTRAN, between E-UTRAN and P-GW, transmit data, and be responsible for pending datas such as paging are carried out buffer memory, S-GW links to each other with EUTRAN by the SI-U interface, link to each other with MME by the S11 interface, link to each other with PCRF by the Gxc interface, link to each other with P-GW by the S5 interface; P-GW then is the borde gateway of EPS and Packet Data Network (PDN, PacketData Network), is responsible for the access of PDN, transmits data etc. between EPS and PDN, and P-GW links to each other with PCRF by the Gx interface, and the IP operation that provides by SGi and operator links to each other; PCRF is by Rx interface and the Internet protocol (IP of operator, Internet Protocol) the business network interface connects, obtain business information, and link to each other with gateway device in the 3GPP network by the Gx/Gxa/Gxb/Gxc interface, be responsible for initiating the foundation of IP carrying, guarantee the service quality (QoS, Quality of Service) of business datum, and the control of chargeing.
Fig. 3 is the system architecture schematic diagram of PCC in the existing EPC network, as shown in Figure 3, strategy and charge execution function (PCEF, Policy and charging enforcement function) reside among the P-GW of EPS system, pass through Gx interface exchange message between PCRF and PCEF.When the interface between P-GW and S-GW during based on PMIPv6, also there is the function of policy control in S-GW, be called bearing binding and event reporting function (BBERF, Bearer Binding and Event Reporting Function), pass through Gxc interface exchange message between BBERF and the PCRF.Simultaneously, (AF ApplicationFunction) sends to PCRF by Rx interface and is used to generate strategy and the business information of control of chargeing (PCC, Policy andCharging Control) or qos policy for UE provides professional application function.
EPS can provide the charge information of bearing bed to charge system, comprises offline charging and online charging.For online charging, mutual by P-GW and OCS when UE inserts by 3GPP, carry out credit control.P-GW generates charge information and sends to charge system, wherein comprises charging identifier, is called Access Network charging identifier (Access-Network-Charging-Identifier), also can be described as the bearing bed charging identifier.
Application server also can provide the charge information of application layer to charge system simultaneously, and charge information also identifies with charging identifier, is called application function charging identifier (AF-Charging-Identifier).This charging identifier produces and sends to relevant application server by AF in the prior art.
Fig. 4 is the structural representation of PCC system under the scene of existing deployment DRA, as shown in Figure 4, in order to allow PCEF/BBERF and AF correctly select PCRF to carry out policy control, can in system, dispose Diameter route agent (DRA) functional unit and come to be PCEF/BBERF or the correct PCRF of AF selection.Diameter is by the authentication of IETF, mandate.Charging working group (AAA working group) is as follow-on aaa protocol standard.Diameter is a diameter, means that Diameter is the upgraded version of remote customer dialing authentication (RADIUS, Remote Authentication Dial In User Service) agreement.
The working method of DRA is divided into to be acted on behalf of Diameter message and redirects two kinds of Diameter message, the flow process of dual mode is respectively Fig. 5 and shown in Figure 6, Fig. 5 is the workflow schematic diagram of existing DRA as the Diameter agency, and Fig. 6 is the workflow schematic diagram of existing DRA as the Diameter redirection function.
As shown in Figure 5, what is called is acted on behalf of Diameter message and is referred to, after DRA receives Diameter message from Gx interface or Rx interface, be this Diameter message select target PCRF, handle to the target P CRF that chooses the Diameter forwards that receives; Meanwhile, PCRF sends to DRA earlier with Diameter message, and DRA handles the Diameter forwards of receiving again to corresponding PCEF/BBERF.
As shown in Figure 6, so-called Diameter redirect message refers to after DRA receives Diameter signaling message from Gx interface or Rx interface, is this Diameter signaling message select target PCRF; Address information with target P CRF after the selection is handed down to corresponding PCEF/BBERF or AF by the Diameter redirect message, and PCEF/BBERF or AF send the Diameter signaling according to the address information of PCRF to the PCRF of correspondence, set up the Diameter session.
At present, a lot of operators distribute private network IP address for the terminal use, when the terminal use need visit public network, operator need dispose IP address translation equipment the private network IP address and the public network IP address of terminal are translated, the schematic network structure of Fig. 7 for disposing IP address translation equipment in existing a kind of EPC network, as shown in Figure 7, because the existing of IP address translation equipment, (CGN among Fig. 7 was the abbreviation of carrying level network address translation devices, be exactly a kind of IP address translation equipment), make identical PDN connect and be carried on inner IP address and the port numbers of using of EPC, different with IP address and the port numbers used in the extenal grouped network.Therefore, to carrying with a PDN, AF offer business information that PCRF is used for formulating the PCC rule be based on extenal grouped network through IP address and port numbers after the conversion, like this, under the scene of disposing DRA, AF sends to the IP address information that IP address information and PCEF in the Diameter message of DRA send in the Diameter message of DRA at Rx interface on the Gx interface just different, make DRA to be associated with on the same PCRF belonging to same Rx interface message and the Gx interface message in the PDN carrying, can't select correct PCRF, thus can not correct related PCC policy information.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method and system of definite "Policy and Charging Rules Function, can correctly select PCRF, and then correct related PCC policy information.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method of definite "Policy and Charging Rules Function comprises:
The DRA of Diameter route agent obtains the IP address translation information;
DRA utilizes the IP address translation information that obtains to carry out "Policy and Charging Rules Function PCRF and selects with related.
The method that described DRA obtains the IP address translation information is:
Described DRA obtains the IP address translation information from the Gx interface message of strategy and charge execution function PCEF, in described Gx interface message, PCEF initiatively carries the IP address translation information; Perhaps,
Described DRA obtains the IP address translation information through the Gx interface by inquiring about to PCEF.
Described DRA carries out PCRF and selects and be associated as:
Described DRA utilizes the IP address translation information that obtains, and the private net address information of current carrying is corresponded to public network address information, and carry out PCRF according to this public network address information and select with related.
The method that described DRA obtains the IP address translation information is:
PCEF sends for the Diameter session of current carrying to described DRA by the Gx interface and sets up request, in the Diameter of the described Gx interface session request of setting up, carry the address information of describing current carrying, and to the IP address translation information of the address information that should carry;
Described DRA sets up from the Diameter session that receives and obtains the IP address translation information the request.
The method that described DRA obtains the IP address translation information is:
PCEF sends for the Diameter session of current carrying to described DRA by the Gx interface and sets up request, sets up in the Diameter of described Gx interface session and carries the address information of describing current carrying in the request;
Described DRA sets up response message by the Diameter session after receiving the Diameter session foundation request of Gx interface, sends IP address translation information inquiry indication to described PCEF;
After described PCEF obtains the IP address translation information, send the Diameter session to DRA again and set up request message, wherein carry the IP address translation information;
Described DRA sets up from the Diameter session that receives again and obtains the IP address translation information the request.
This method also comprises: described DRA sends to the PCRF that selects with the IP address translation information that obtains, and the PCRF that selects carries out the association of professional control session.
Described DRA sends to the PCRF that selects with the IP address translation information that obtains, and the association that the PCRF that selects carries out professional control session comprises:
Described DRA sets up request message with the Diameter session and is transmitted to selected PCRF, sets up the IP address translation information that carries this carrying in the request in the Diameter session of acting on behalf of of transmitting;
The address information and the IP address translation information of the current carrying that described selected PCRF basis receives, carry out the association and the strategic decision-making of professional PCC strategy in conjunction with the professional PCC policy information that receives from Rx interface, carry out the PCC policing rule flow process is provided, send the Diameter session to described DRA and set up response message;
Described DRA transmits the Diameter session by the Gx interface and sets up response to corresponding PCEF, issues the PCC rule for corresponding PCEF.
This method comprises that also described DRA sends to the PCRF that selects with the IP address translation information that obtains, and the PCRF that selects carries out the association of professional control session; Specifically comprise:
Described DRA sets up response message by the Diameter session and issues the redirected indication of PCRF to described PCEF, carries the address information of the selected PCRF of DRA in this indication;
Described PCEF is redirected the address information of the PCRF in the indication according to PCRF, request is set up in the Diameter session that sends the Gx interface of current carrying by the Gx interface to the PCRF of correspondence, in the Diameter of this Gx interface session request of setting up, carry the address information of describing this carrying, and to the IP address translation information of the address information that should carry;
Described PCRF is according to the carrying address information and the IP address translation information that receive, carry out the association and the strategic decision-making of professional PCC strategy in conjunction with the professional PCC policy information that receives from Rx interface, carry out the PCC policing rule flow process is provided, send the Diameter session to the PCEF of correspondence and set up response message.
A kind of system of definite "Policy and Charging Rules Function comprises DRA and the PCRF that selects at least, wherein,
DRA is used to obtain the IP address translation information, utilizes the IP address translation information that obtains to carry out PCRF and selects with related.The IP address translation information that also is used for obtaining sends to the PCRF that selects;
The PCRF that selects is used to receive the IP address translation information from DRA, and the PCRF that selects carries out the association of professional control session.
This system also comprises PCEF and NAT, wherein,
PCEF is used for carrying the IP address translation information in the Gx interface message that sends to DRA; Perhaps receive indication, provide IP address translation information to DRA from DRA.
NAT is used for providing IP address translation information to PCEF.
The technical scheme that provides from the invention described above as can be seen, DRA obtains the IP address translation information, and utilizes the IP address translation information that obtains to carry out PCRF and select with related.By the inventive method, under the scene of on-premise network address translator and DRA, DRA has correctly selected PCRF according to the message on Rx interface and the Gx interface at the same time.And then correctly realized the association of PCC policy information.
Description of drawings
Fig. 1 is existing EPC network of network structure chart;
Fig. 2 is the system architecture diagram of existing EPC network;
Fig. 3 is the system architecture diagram of PCC system in the existing EPC network;
Fig. 4 is the structural representation of PCC system under the scene of existing deployment DRA;
Fig. 5 is the workflow schematic diagram of existing DRA as the diameter agency;
Fig. 6 is the workflow schematic diagram of existing DRA as the diameter redirection function;
The schematic network structure of Fig. 7 for disposing IP address translation equipment in existing a kind of EPC network;
Fig. 8 is the flow chart of the inventive method;
Fig. 9 is the composition structural representation of the system of the inventive method application;
Figure 10 determines the schematic flow sheet of first embodiment of PCRF for the present invention;
Figure 11 determines the schematic flow sheet of second embodiment of PCRF for the present invention;
Figure 12 determines the schematic flow sheet of the 3rd embodiment of PCRF for the present invention.
Embodiment
Fig. 8 is the flow chart of the inventive method, under the scene of on-premise network address translator and DRA, as shown in Figure 8, may further comprise the steps at the same time:
Step 800:DRA obtains the IP address translation information.
In this step, can be that PCEF initiatively carries IP address translation information (being the information of corresponding relation before and after the address translation) in sending to the Gx interface message of DRA; Also can be that DRA initiatively obtains the IP address translation information by the Gx interface to the PCEF inquiry.
Wherein, PCEF can obtain the IP address translation information from NAT by existing multiple mode, and the present invention does not limit, and its obtain manner also is not intended to limit the scope of the invention.
Step 801:DRA utilizes the IP address translation information that obtains to carry out PCRF and selects with related.
In this step, the IP address translation information that DRA utilize to obtain corresponds to public network address information with the private net address information of current carrying, and carries out PCRF according to this public network address information and select with related.How carrying out PCRF selects and the related prior art that belongs to, here repeat no more, what this step was emphasized is, DRA utilizes the IP address translation information that obtains, find the public network address information of the private net address information correspondence of current carrying, like this, just guaranteed the correct selection of PCRF by public network address information.
Further, the inventive method also comprises:
Step 802:DRA sends to the PCRF that selects with the IP address translation information that obtains, and the PCRF that selects carries out the association of professional control session.In this step, PCRF carries out the association and the strategic decision-making of professional PCC strategy according to the carrying address information and the IP address translation information that receive in conjunction with the professional PCC policy information that receives from Rx interface, carries out the PCC policing rule then flow process is provided.
By the inventive method, under the scene of on-premise network address translator and DRA, DRA has correctly selected PCRF according to the message on Rx interface and the Gx interface at the same time.And then correctly realized the association of PCC policy information.
Also provide a kind of system at the inventive method, Fig. 9 is the composition structural representation of the system of the inventive method application, as shown in Figure 9, comprises DRA and the PCRF that selects at least, wherein,
DRA is used to obtain the IP address translation information, utilizes the IP address translation information that obtains to carry out PCRF and selects with related.The IP address translation information that also is used for obtaining sends to the PCRF that selects.
The PCRF that selects is used to receive the IP address translation information from DRA, and the PCRF that selects carries out the association of professional control session.
System of the present invention also comprises PCEF and NAT, wherein,
PCEF is used for carrying the IP address translation information in the Gx interface message that sends to DRA; Perhaps receive indication, provide IP address translation information to DRA from DRA.
NAT is used for providing IP address translation information to PCEF.
Below in conjunction with embodiment, the inventive method is described in detail.
Figure 10 determines the schematic flow sheet of first embodiment of PCRF for the present invention, and among first embodiment, DRA is responsible for transmitting Diameter message to corresponding PCRF as Diameter Message Agent functional unit.PCEF initiatively reports the IP address translation information in the Diameter of Gx interface message, DRA selects correct PCRF according to the IP address translation information, give selected PCRF with this IP address translation information by the Diameter forwards simultaneously, selected PCRF carries out the association of professional control session, as shown in figure 10, specifically may further comprise the steps:
Step 1000:PCEF sends for the Diameter session of certain carrying to DRA by the Gx interface and sets up request, in the Diameter of this Gx interface session request of setting up, carry: describe the address information of this carrying such as source IP address, purpose IP address, port numbers to and protocol number (also claiming five-tuple), also carry IP address translation information (being the information of corresponding relation before and after the address translation) simultaneously corresponding to this five-tuple.
After step 1001:DRA receives the Diameter session foundation request of Gx interface, address information and IP address translation information according to this carrying that obtains, for corresponding PCRF is searched or selects in this carrying, carry out the establishment or the binding of Diameter session, the IP address translation information that recorder is simultaneously arrived.
In this step, the address information that obtains this carrying is a private net address information, utilizes the IP address translation information that obtains, and promptly according to corresponding relation before and after the address translation, obtains the public network address information of the private net address information correspondence of this carrying.Specifically: according to the IP address translation information, the five-tuple information of the private network IP address that receives is translated into the five-tuple information of public network IP addresses corresponding, in conjunction with the five-tuple information of the public network IP address of receiving from Rx interface, select PCRF again.
Step 1002:DRA sets up request message with the Diameter session and is transmitted to selected PCRF, sets up the IP address translation information that also carries this carrying in the request in the Diameter session of acting on behalf of of transmitting.
Carrying address information that step 1003:PCRF basis receives and IP address translation information are (promptly according to the IP address translation information, the five-tuple information of the private network IP address that receives is translated into the five-tuple information of public network IP addresses corresponding), carry out the association and the strategic decision-making of professional PCC strategy in conjunction with the professional PCC policy information that receives from Rx interface, carry out the PCC policing rule then flow process is provided, send the Diameter session to DRA and set up response message as the Diameter Message Agent.
Step 1004:DRA transmits the Diameter session by the Gx interface and sets up response to corresponding PCEF, issues the PCC rule for corresponding PCEF.
Figure 11 determines the schematic flow sheet of second embodiment of PCRF for the present invention, and among second embodiment, DRA is responsible for being redirected to corresponding PCRF from the message that the Gx interface receives as the redirection function unit of Diameter message.PCEF initiatively reports the IP address translation information in the Diameter of Gx mouth message, DRA selects correct PCRF according to the IP address translation information and is redirected, PCEF sends to redirected PCRF with this IP address translation information by Diameter message, and PCRF carries out the association of professional control session.As shown in figure 11, specific implementation may further comprise the steps:
Step 1100:PCEF sends for the Diameter session of certain carrying to DRA by the Gx interface and sets up request, in the Diameter of this Gx interface session request of setting up, carry: describe the address information of this carrying such as source IP address, purpose IP address, port numbers to and protocol number (also claiming five-tuple), also carry IP address translation information (being the information of corresponding relation before and after the address translation) simultaneously corresponding to this five-tuple.
After step 1101:DRA receives the Diameter session foundation request of Gx interface, address information and IP address translation information according to this carrying that obtains, for corresponding PCRF is searched or selects in this carrying, carry out the establishment or the binding of Diameter session, the IP address translation information that recorder is simultaneously arrived.
Step 1102:DRA sets up response message by the Diameter session and issues the redirected indication of PCRF to PCEF, carries the address information of the selected PCRF of DRA in this indication.
Step 1103:PCEF is redirected the address information of the PCRF in the indication according to PCRF, request is set up in the Diameter session that sends the Gx interface of certain carrying by the Gx interface to the PCRF of correspondence, in the Diameter of this Gx interface session request of setting up, carry: describe the address information of this carrying such as source IP address, purpose IP address, port numbers to and protocol number (also claiming five-tuple), also carry IP address translation information (being the information of corresponding relation before and after the address translation) simultaneously corresponding to this five-tuple.
Step 1104:PCRF is according to the carrying address information and the IP address translation information that receive, carry out the association and the strategic decision-making of professional PCC strategy in conjunction with the professional PCC policy information that receives from Rx interface, carry out the PCC policing rule then flow process is provided, send the Diameter session to the PCEF of correspondence and set up response message.
Figure 12 determines the schematic flow sheet of the 3rd embodiment of PCRF for the present invention, and among the 3rd embodiment, DRA is responsible for transmitting Diameter message to corresponding PCRF as Diameter Message Agent functional unit.Suppose that PCEF does not initiatively report the IP address translation information on the Gx interface, DRA finds can't select and related corresponding PCRF according to the address information of carrying after receiving Diameter message, obtain the IP address translation information by initiatively sending Diameter message through the Gx interface, thereby the selection of correctly carrying out PCRF is with related, as shown in figure 12, specific implementation may further comprise the steps:
Step 1200:PCEF sends for the Diameter session of certain carrying to DRA by the Gx interface and sets up request, sets up in the request in the Diameter of this Gx interface session to carry: describe the address information of this carrying such as source IP address, purpose IP address, port numbers to and protocol number (also claiming five-tuple).Among the 3rd embodiment, set up the IP address translation information of not carrying in the request corresponding to this five-tuple in the Diameter of this Gx interface session.
After step 1201:DRA receives the Diameter session foundation request of Gx interface, search or select corresponding PCRF for this carrying according to the address information of describing this carrying, carry out the establishment or the binding of Diameter session, but, because the address information that obtains is a private net address information, therefore, DRA is selection or the association that can't carry out PCRF.
Step 1202:DRA sets up response message by the Diameter session, initiatively sends IP address translation information inquiry indication to the PCEF of correspondence, so that obtain the corresponding relation of IP address translation.
Step 1203:PCEF receives from after the IP address translation information of the DRA inquiry indication, can obtain address translation information (specific implementation of these methods does not belong to protection range of the present invention, is not intended to limit the scope of the invention yet) from network address translation devices by existing several different methods; After PCEF obtains the IP address translation information, send the Diameter session to DRA again and set up request message, wherein carry the IP address translation information.
The realization and the step 1002～step 1004 of step 1204～step 1206 are in full accord, repeat no more here.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the method for a definite "Policy and Charging Rules Function is characterized in that, comprising:
The DRA of Diameter route agent obtains the IP address translation information;
DRA utilizes the IP address translation information that obtains to carry out "Policy and Charging Rules Function PCRF and selects with related.
2. method according to claim 1 is characterized in that, the method that described DRA obtains the IP address translation information is:
Described DRA obtains the IP address translation information from the Gx interface message of strategy and charge execution function PCEF, in described Gx interface message, PCEF initiatively carries the IP address translation information; Perhaps,
Described DRA obtains the IP address translation information through the Gx interface by inquiring about to PCEF.
3. method according to claim 1 and 2 is characterized in that, described DRA carries out PCRF and selects and be associated as:
Described DRA utilizes the IP address translation information that obtains, and the private net address information of current carrying is corresponded to public network address information, and carry out PCRF according to this public network address information and select with related.
4. method according to claim 1 is characterized in that, the method that described DRA obtains the IP address translation information is:
PCEF sends for the Diameter session of current carrying to described DRA by the Gx interface and sets up request, in the Diameter of the described Gx interface session request of setting up, carry the address information of describing current carrying, and to the IP address translation information of the address information that should carry;
Described DRA sets up from the Diameter session that receives and obtains the IP address translation information the request.
5. method according to claim 1 is characterized in that, the method that described DRA obtains the IP address translation information is:
PCEF sends for the Diameter session of current carrying to described DRA by the Gx interface and sets up request, sets up in the Diameter of described Gx interface session and carries the address information of describing current carrying in the request;
Described DRA sets up response message by the Diameter session after receiving the Diameter session foundation request of Gx interface, sends IP address translation information inquiry indication to described PCEF;
After described PCEF obtains the IP address translation information, send the Diameter session to DRA again and set up request message, wherein carry the IP address translation information;
Described DRA sets up from the Diameter session that receives again and obtains the IP address translation information the request.
6. according to claim 1,4 or 5 described methods, it is characterized in that this method also comprises: described DRA sends to the PCRF that selects with the IP address translation information that obtains, and the PCRF that selects carries out the association of professional control session.
7. method according to claim 6 is characterized in that, described DRA sends to the PCRF that selects with the IP address translation information that obtains, and the association that the PCRF that selects carries out professional control session comprises:
Described DRA sets up request message with the Diameter session and is transmitted to selected PCRF, sets up the IP address translation information that carries this carrying in the request in the Diameter session of acting on behalf of of transmitting;
The address information and the IP address translation information of the current carrying that described selected PCRF basis receives, carry out the association and the strategic decision-making of professional PCC strategy in conjunction with the professional PCC policy information that receives from Rx interface, carry out the PCC policing rule flow process is provided, send the Diameter session to described DRA and set up response message;
Described DRA transmits the Diameter session by the Gx interface and sets up response to corresponding PCEF, issues the PCC rule for corresponding PCEF.
8. according to claim 1 or 4 described methods, it is characterized in that this method comprises that also described DRA sends to the PCRF that selects with the IP address translation information that obtains, the PCRF that selects carries out the association of professional control session; Specifically comprise:
Described DRA sets up response message by the Diameter session and issues the redirected indication of PCRF to described PCEF, carries the address information of the selected PCRF of DRA in this indication;
Described PCEF is redirected the address information of the PCRF in the indication according to PCRF, request is set up in the Diameter session that sends the Gx interface of current carrying by the Gx interface to the PCRF of correspondence, in the Diameter of this Gx interface session request of setting up, carry the address information of describing this carrying, and to the IP address translation information of the address information that should carry;
Described PCRF is according to the carrying address information and the IP address translation information that receive, carry out the association and the strategic decision-making of professional PCC strategy in conjunction with the professional PCC policy information that receives from Rx interface, carry out the PCC policing rule flow process is provided, send the Diameter session to the PCEF of correspondence and set up response message.
9. the system of a definite "Policy and Charging Rules Function is characterized in that, comprises DRA and the PCRF that selects at least, wherein,
DRA is used to obtain the IP address translation information, utilizes the IP address translation information that obtains to carry out PCRF and selects with related.The IP address translation information that also is used for obtaining sends to the PCRF that selects;
The PCRF that selects is used to receive the IP address translation information from DRA, and the PCRF that selects carries out the association of professional control session.
10. system according to claim 9 is characterized in that this system also comprises PCEF and NAT, wherein,
PCEF is used for carrying the IP address translation information in the Gx interface message that sends to DRA; Perhaps receive indication, provide IP address translation information to DRA from DRA;
NAT is used for providing IP address translation information to PCEF.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| PCT/CN2011/072032 WO2011134327A1 (en) | 2010-04-26 | 2011-03-22 | Method and system for determining policy and charging rules function |
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| CN103490908A (en) * | 2012-06-12 | 2014-01-01 | 中兴通讯股份有限公司 | Selection method, device and system for PCRF |
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| CN106817434A (en) * | 2015-11-30 | 2017-06-09 | 中国移动通信集团公司 | A kind of binding session method, route agent and PCRF |
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| CN112887151A (en) * | 2015-02-03 | 2021-06-01 | 思科技术公司 | System and method for discovering policy charging and rule functions in a network environment |
| CN112887151B (en) * | 2015-02-03 | 2023-12-26 | 思科技术公司 | System and method for discovering policy charging and rules functions in a network environment |
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| CN106998542A (en) * | 2016-01-22 | 2017-08-01 | 中国电信股份有限公司 | Method and system for configuring PCC strategies |
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| CN108668269A (en) * | 2017-03-28 | 2018-10-16 | 华为技术有限公司 | A kind of diameter Diameter message method for routing, routing device and system |
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| CN102238507B (en) | 2015-08-12 |
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