CN1988722A - Method for controling tactics under roaming state - Google Patents
Method for controling tactics under roaming state Download PDFInfo
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- CN1988722A CN1988722A CNA2005101369245A CN200510136924A CN1988722A CN 1988722 A CN1988722 A CN 1988722A CN A2005101369245 A CNA2005101369245 A CN A2005101369245A CN 200510136924 A CN200510136924 A CN 200510136924A CN 1988722 A CN1988722 A CN 1988722A
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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
- 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
- H04M15/46—Real-time negotiation between users and providers or operators
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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
- H04M15/57—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP for integrated multimedia messaging subsystem [IMS]
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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
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/80—Rating or billing plans; Tariff determination aspects
- H04M15/8038—Roaming or handoff
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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
- H04M15/81—Dynamic pricing, e.g. change of tariff during call
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
- H04M2215/01—Details of billing arrangements
- H04M2215/0112—Dynamic pricing, e.g. change of tariff during call
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
- H04M2215/20—Technology dependant metering
- H04M2215/2026—Wireless network, e.g. GSM, PCS, TACS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
- H04M2215/20—Technology dependant metering
- H04M2215/204—UMTS; GPRS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
- H04M2215/20—Technology dependant metering
- H04M2215/208—IMS, i.e. Integrated Multimedia messaging Subsystem
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
- H04M2215/56—On line or real-time flexible agreements between service providers and telecoms operators
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
- H04M2215/74—Rating aspects, e.g. rating parameters or tariff determination apects
- H04M2215/7442—Roaming
Abstract
A control strategy in the state of roaming includes steps: visiting PCRF of network to get the strategy and billing control rules from PCRF of network attributed by user equipment, visiting PCRF to combing the strategies and billing control rules from network and from transmission to generate a new one, visiting PCRF to send the new one of b) to the gateway.
Description
Technical field
The present invention relates to 3G (Third Generation) Moblie, particularly on the basis of universal mobile telecommunications system (hereinafter to be referred as UMTS), carry out the mobile communication system (hereinafter to be referred as E-UMTS) of evolution.
Background technology
In order to support E-UMTS, a lot of companies have all proposed the architecture of oneself, wherein describe about the example of the architecture of subscriber equipment under roaming state with Fig. 1.
Provided the structure chart that subscriber equipment is roamed down at Internet IP multimedia subsystem, IMS (hereinafter to be referred as IMS) among Fig. 1.
Subscriber equipment is in visited network, the gateway communication of meeting elder generation and visited network after the start, register, the gateway of visited network obtains user's register information from the home subscriber server (hereinafter to be referred as HSS) of subscriber equipment, for example allow the positional information that roams into, type of service that provides etc. is provided.If subscriber equipment is allowed to accept service at home network, visited network will be accepted its registration request so, preserves the log-on message of subscriber equipment.After subscriber equipment is finished Location Registration at visited network, obtain visited network and give its IP address allocated, subscriber equipment just carries out the IMS registration so, makes that the S-CSCF of subscriber equipment can the residing position of recording user equipment, and the IP address.P-CSCF is subscriber equipment inserts IMS in visited network first entrance.Find the S-CSCF of subscriber equipment by P-CSCF, thereby make that the position of subscriber equipment can be by the S-CSCF accurate recording.
"Policy and Charging Rules Function entity (hereinafter to be referred as PCRF) is to be used for controlling the service quality of subscriber equipment and an entity of charging regulation.This entity obtains the service attribute that application defines from CSCF, and draw subscriber equipment by this service attribute and receive the service quality that this business is needed or allowed, and this professional charging regulation.Service quality comprises that for example error rate, the business of the business data packet of data rate, data are real-time or non real-time or the like, and concrete definition can be referring to 3GPP TS 23.107 and 23.207.Charging regulation may describe type to this service billing (by the time still by flow etc.), online charging still is unit of offline charging, charging or the like, concrete definition can be referring to 3GPP TS 23.125.The enforcement of these service quality and charging policy is not finished at PCRF, but carry out at gateway.In the architecture of in Fig. 1, describing, the PCRF of user attaching network may be according to traffic performance or/and user's subscription data or/and the strategy of operator oneself produces strategy and the charging regulation at certain business of this subscriber equipment, and the PCRF of visited network also may determine the strategy and the charging regulation of this subscriber equipment according to the local policy that operator formulated of visited network and user's subscription data.In fact, gateway will satisfy this two strategies that PCRF formulated and charging regulations simultaneously.
So these strategies and charging regulation be how to transmit gateway and use, be exactly that the present invention expects the problem that will solve.
Gateway is from acting on behalf of PCRF and obtain surveying slightly and the method for charging regulation can be referring to Fig. 2.
Subscriber equipment sends the message 201 in IMS territory and invites to called, and called can be the another one subscriber equipment, and landline telephone also can be an application server etc.Comprise called address in this message, represent with the unified normal indication URI of Session initiation Protocol SIP definition, to the business description of queued session, parameter such as code/decode type, service quality assurance for example.For comprising which parameter in concrete this message, can be referring to 3GPP TS 24.228.When P-CSCF receives from the response message of called end for example 202 200 OK or the 183 session processes, because comprised professional information in this message, the business of the passing to bandwidth that may need for example, type of service etc.P-CSCF sends to PCRF203 with these information, comprises the description to Media Stream in this message, and the information such as grouping information of Media Stream.According to these information, PCRF can produce for this subscriber equipment authentication token, be used for this subscriber equipment is authenticated.In 204 auth responses, PCRF can return the authentication token of its generation.After receiving authentication token, P-CSCF can send 205 200 OK message to subscriber equipment.Subscriber equipment can confirm whether will set up radio bearer according to the type of message in 205.If desired, subscriber equipment and gateway (being GGSN) communicate, and set up the radio bearer and the network carrying.The concrete mode of setting up is not given unnecessary details at this because do not have direct relation with the present invention.Receive the request message of user plane foundation as gateway GGSN after, can check the authentication token that carries in this message, knowing by authentication token needs which PCRF request strategy and charging regulation of whereabouts, GGSN sends a request message 207 to PCRF then, comprise authentication information in this message, binding information etc.After receiving this message, PCRF can confirm 208 to the authentication information in this message, if success, so PCRF just inform the service quality of gateway mandate, at the gate ability of up-downgoing data etc.Gateway receives after 208 that discovery institute requested service quality reaches to be finished the authentication of subscriber equipment, just sets up carrying in wave point and network, thereby makes subscriber equipment can carry out professional transmission and reception.
PCRF among Fig. 2 generally refers to strategy and the charging regulation controlled entity that links to each other with gateway, but in the architecture of Fig. 1, it also can be strategy and charging regulation controlled entity in home network, and this entity receives business information from S-CSCF.
The problem that exists is how the PCRF that acts on behalf of of visited network can be from the ownership PCRF acquisition strategy and the charging regulation of home network.Also there is not solution in the present system for this scheme.
Summary of the invention
The purpose of this invention is to provide a kind of method of under roaming state, carrying out policy control, thereby make network can better control quality of services for users and charging regulation.
For achieving the above object, a kind of method of carrying out policy control under roaming state comprises step:
A) PCRF of visited network obtains strategy and charging control rule from the PCRF of the home network of subscriber equipment;
B) strategy that transmits and the charging control rule of the PCRF of the PCRF of visited network strategy that visited network is produced and charging control rule and home network merge, and generate new strategy and charging control rule;
C) PCRF of visited network is with b) in new strategy and the charging control rule that produce send to gateway.
The present invention can realize that home network and visited network carry out the purpose of policy control and charging regulation control simultaneously to user's business, thereby more effectively utilizes Internet resources, and user's business is carried out differentiated services etc.
Description of drawings
Fig. 1 is the architecture of subscriber equipment under roaming state;
Fig. 2 is strategy and charging regulation acquisition methods;
Fig. 3 is first embodiment of the present invention;
Fig. 4 is second embodiment of the present invention;
Fig. 5 is the signaling procedure that UE obtains the H-PCRF address;
Fig. 6 is the third embodiment of the present invention;
Fig. 7 is the behavior act figure of UE;
Fig. 8 is the action behavior figure of H-PCRF;
Fig. 9 is the action specification figure of P-PCRF;
Figure 10 is the action specification figure of S-CSCF;
Figure 11 is the action specification figure of P-CSCF.
Embodiment
The PCRF processing policy of visited network and charging regulation can be as follows:
The strategy of visit PCRF and home network PCRF definition is consistent with the attribute that charging regulation embodies.
For example strategy refers to the type of service that is allowed, data rate, and the error rate of packet, business are real-time or non real-time, detail parameters can be referring to 3GPP TS 23.207 and 23.125.The PCRF of visited network can merge these strategies, and the rule of merging can be to realize being correlated with, but general principle is to select minimum quality of service policy and the strictest charging regulation to carry out.If such as one of type of service is a sound-type, another one is a Streaming Media, and will select final type of service so is Streaming Media; If one of data rate is 32kbps, one is 64Kbps, so just selects 32kbps.Certainly the situation that also exists visited network the business of subscriber equipment not to be carried out special policy control and charging regulation control, like this, visited network just uses strategy and the charging regulation that transmits from home network.On the contrary, also exist home network the business of subscriber equipment not to be carried out the situation of special policy control and charging regulation control certainly, like this, visited network just uses the strategy and the charging regulation of visited network oneself definition.
Fig. 3 has described the first embodiment of the present invention.Subscriber equipment obtains the address information of the PCRF of home network in registration process, this process will be described in Fig. 5.When subscriber equipment carries out conference call, send 301 invitation message to P-CSCF, comprise called address information in this message, call out the session parameter of desired foundation, belong to the address of PCRF in addition.P-CSCF by user's subscription network information, knows which S-CSCF302 is message sent to after invitation message is handled.P-CSCF handles invitation message, preserves called identification, calling identification, parameters such as routing iinformation.After S-CSCF receives 302 invitation message, the preservations such as sequence number of called address, calling address, routing iinformation and message are got off, send 303 invitation message then to called S-CSCF.Seek in the S-CSCF process of caller at P-CSCF, may have the participation of I-CSCF, but this is the same with prior art, therefore do not give unnecessary details at this.S-CSCF finds called S-CSCF according to called subscriber's expression, and concrete grammar is referring to 3GPP TS 23.228.If the S-CSCF of caller afterwards receive 304 200 OK message that callee side returns or 183 sessions carry out in after the message, because comprise characterising parameter in these two message for session, therefore S-CSCF sends to H-PCRF305 with authentication authorization request, from the authentication token 306 of H-PCRF acquisition for subscriber equipment.Comprise description for the Media Stream bandwidth etc. in the authentication authorization request message.S-CSCF selects H-PCRF to select according to user device IP address, also may select immediately from available PCRF.Afterwards, S-CSCF just to P-CSCF send 200 OK message or 183 sessions carry out in message 307, comprise calling/called information, routing iinformation in this message, session parameter description etc.P-CSCF sends 308 authentication authorization request to P-PCRF, and this message is removed the description that comprises Media Stream, and outside the grouping information of Media Stream, also comprises the address information of H-PCRF.This address information should be the IP address that can parse H-PCRF by the domain name mapping device.Parse the IP address of H-PCRF as P-PCRF after, just send 309 strategy request message to H-PCRF.To comprise information such as user ID, user's IP address in this message.After H-PCRF knew the sign of subscriber equipment, just strategy and the charging regulation that subscriber equipment is suitable for passed to P-PCRF, and these parameters are included in the 310 policy download message.This message also should comprise information such as public user identity.After P-PCRF receives 310, the strategy and the charging regulation that just H-PCRF are transmitted the generation of strategy and charging regulation and local network merge, just answer message to the mandate of P-CSCF return authentication then, this message may comprise the information such as authentication token of P-CSCF to the user.How the rule that merges also can be merged by the visited network decision as previously mentioned.P-CSCF just sends 312 200 OK or middle message is carried out in 183 sessions to subscriber equipment after knowing that P-PCRF has obtained strategy and charging regulation, comprises in the message that calling and called identify, the session parameter description, may also comprise information such as authentication token.Subscriber equipment receives that just setting up user plane after 200 OK transmits data, and the foundation of this user plane comprises the foundation of radio bearer and the foundation of the network carrying, and it specifically sets up mode, and it doesn't matter with the present invention, so do not give unnecessary details at this.After receiving the information that to set up user plane when gateway, carry out needed strategy of session and charging regulation, comprise the sign of subscriber equipment in this message 314, optionally comprise information such as authentication token to P-PCRF request subscriber equipment.P-PCRF returns 315 message to gateway, comprises in this message to be applied to strategy and the charging regulation that subscriber equipment should business, and gateway on the business of subscriber equipment, sets up 316 to what the user confirmed user plane with these application of policies.
What Fig. 4 described is the second embodiment of the present invention.When subscriber equipment is wanted to carry out conference call, send 401 invitation message to P-CSCF, comprise the address information of caller in this message, called address information is called out the information such as session parameter of desired foundation.P-CSCF sends to S-CSCF402 after invitation message is handled, and P-CSCF can be contained in the address packet of the P-PCRF that selects in this message, sends S-CSCF to.P-CSCF handles invitation message, preserves called identification, calling identification, parameters such as routing iinformation.Seek in the S-CSCF process of caller at P-CSCF, may have the participation of I-CSCF, but this is the same with prior art, therefore do not give unnecessary details at this.After S-CSCF receives 402 invitation message, got off in the address of called address, calling address, routing iinformation, P-PCRF and the preservations such as sequence number of message, send 403 invitation message then to called S-CSCF.S-CSCF finds called S-CSCF according to called subscriber's sign, and concrete grammar is referring to 3GPP TS 23.228.If the S-CSCF of caller afterwards receive 404 200 OK message that callee side returns or 183 sessions carry out in after the message, because comprise characterising parameter in these two message for session, therefore S-CSCF sends to H-PCRF305 with authentication authorization request, also needs to comprise the address of P-PCRF in this message.H-PCRF sees the address that comprises P-PCRF in the message, just sends message 406 policy download to P-PCRF, comprises strategy and charging regulation that business that customer equipment identification and subscriber equipment carry out will adopt in this message.The P-PCRF address information should be the IP address that can parse it by the domain name mapping device.P-PCRF receives after these strategies and the charging regulation that the strategy and the charging regulation that just H-PCRF are transmitted the generation of strategy and charging regulation and local network merge, and how the rule of merging also can be merged by the visited network decision as previously mentioned.When H-PCRF receives behind the response message of P-PCRF 407, confirm that P-PCRF has received the strategy and the charging regulation of its transmission, just, may comprise authentication token in this message to S-CSCF return authentication mandate answer message 408.S-CSCF carries out middle forwards to P-CSCF409 with 200 OK or 183 sessions.After P-CSCF receives this message, send 410 authentication authorization request message, comprise description in this message Media Stream to P-PCRF, and the grouping information of Media Stream etc.Whether P-PCRF can analyze its business information of receiving and be complementary with strategy and the charging regulation about certain Media Stream received from H-PCRF, if no problem, P-PCRF returns 411 service response message to P-CSCF so.May carry authentication token information in this message.P-CSCF just sends 412 200 OK or middle message is carried out in 183 sessions to subscriber equipment after knowing that P-PCRF has obtained strategy and charging regulation, comprises in the message that calling and called identify, the session parameter description, may also comprise information such as authentication token.Subscriber equipment receives that just setting up user plane after 200 OK transmits data, and the foundation of this user plane comprises the foundation of radio bearer and the foundation of the network carrying, and it specifically sets up mode, and it doesn't matter with the present invention, so do not give unnecessary details at this.After receiving the information that to set up user plane when gateway, carry out needed strategy of session and charging regulation, comprise the sign of subscriber equipment in this message 414, optionally comprise information such as authentication token to P-PCRF request subscriber equipment.P-PCRF returns 415 message to gateway, comprises in this message to be applied to strategy and the charging regulation that subscriber equipment should business, and gateway on the business of subscriber equipment, sets up 416 to what the user confirmed user plane with these application of policies.
What Fig. 5 described is the signaling process how UE obtains the H-PCRF address.UE is when carrying out the IMS registration, send 501 registration messages to S-CSCF, the Session initiation Protocol that comprises subscriber equipment in this message is unified the information such as IP address of positioning mark, UE, after S-CSCF receives registration message, we suppose that S-CSCF authenticates subscriber equipment, and authentication success.S-CSCF unifies positioning mark according to the Session initiation Protocol of subscriber equipment and finds HSS into the service of this subscriber equipment so, and notice HSS 502 these S-CSCF have become this user S-CSCF.The information such as specific identity that should comprise subscriber equipment public user identity, S-CSCF name, subscriber equipment in this message.HSS is recorded as the S-CSCF name of user's service, the subscription data of informing S-CSCF user, for example charge information and initial filter standard or norm etc.
S-CSCF returns 504 200 OK message to subscriber equipment, accepts the registration of subscriber equipment, the Session initiation Protocol of subscriber equipment is unified positioning mark be associated with the IP address of UE.Should comprise the address information of S-CSCF for the H-PCRF of this subscriber equipment selection in 200 OK message, this address information should be the universe name that can obtain the IP address by the domain name mapping device.
That Fig. 6 describes is the 3rd embodiment of the present invention.It is similar substantially that the signaling process of Fig. 6 and Fig. 3 describe, and only the address of P-CSCF acquisition H-PCRF does not obtain from subscriber equipment, but obtain from S-CSCF.The IMS session is carried out according to normal flow, when returning 607 200 OK or 183 sessions to P-CSCF, S-CSCF carries out when middle, this message also comprises the address of H-PCRF except the normal parameter of calling out, resolve the IP address that this address can access H-PCRF by name server.In 608 processes, P-CSCF passes to P-PCRF with the address of H-PCRF then, and it is living with the 309-316 among Fig. 3 that this process reaches with good 609-616.
Fig. 7 is the action specification of subscriber equipment among the present invention.According to first embodiment of the invention, subscriber equipment carries out the IMS registration, and this registration process and existing registration process are without any difference, and idiographic flow can be referring to 3GPP TS 23.228.Subscriber equipment sends registration message to P-CSCF and S-CSCF, can comprise the information such as public user identity, user's IP address of subscriber equipment in this message.If subscriber equipment is received final response 200 OK for registration message, wherein comprise the address 702 of H-PCRF, UE just knows that it is in roaming state so, preserves the address 703 of H-PCRF.When any change does not take place and will carry out the IMS session in the log-on message of subscriber equipment, in the invitation message of its initiation, the address information that comprises H-PCRF, certainly also to comprise other such as called party address, calling party address, conversation description parameter etc.
Fig. 8 is the action specification of H-PCRF among the present invention.If H-PCRF receives the authentication authorization request message that sends from S-CSCF, except comprising business information, also comprise the address 801 of P-PCRF in this message, H-PCRF just goes out the IP address of P-PCRF according to this address resolution so.H-PCRF draws strategy and charging regulation at this business of this subscriber equipment according to information such as the business information that comprises in the authentication authorization request message and operator's configured strategy, sends it to P-PCRF802.If H-PCRF receives the success response 803 of P-PCRF, it just answers message 804 to the mandate of S-CSCF return authentication so, finishes this process.Should comprise information such as authentication token in the message.
If do not comprise the address of P-PCRF in the authentication authorization request message that H-PCRF receives, H-PCRF just answers message 805 to the mandate of S-CSCF return authentication so, comprises user ID in the message, also may comprise information such as authentication token.Next, if H-PCRF receives the strategy request message 806 of P-PCRF, just its strategy that has drawn and charging regulation are passed to P-PCRF807 according to user ID that comprises in the message and business information.
Fig. 9 is the action specification of P-PCRF among the present invention.If P-PCRF receives the authentication authorization request message that sends from P-CSCF, except comprising business information, also comprise the address 901 of H-PCRF in this message, P-PCRF just goes out the IP address of H-PCRF according to this address resolution so.P-PCRF is according to information such as the business information that comprises in the authentication authorization request message and operator's configured strategy, draw strategy and charging regulation, download strategy and the charging regulation 902 of formulating for this business by H-PCRF to the H-PCRF request then at this business of this subscriber equipment.P-PCRF sends strategy request message to H-PCRF, comprises the parameters such as sign of subscriber equipment in this message.If P-PCRF receives the policy download message 903 of H-PCRF, just preserve the strategy and the charging regulation that comprise in this message, and combined with the strategy and the charging regulation of itself generation, be applied to the service quality control and the charging of subscriber equipment.How the rule that merges also can be merged by the visited network decision as previously mentioned.P-PCRF answers message 904 to the mandate of S-CSCF return authentication then, finishes this process.Should comprise information such as authentication token in the message.
If do not comprise the address of H-PCRF in the authentication authorization request message that P-PCRF receives, P-PCRF just answers message 905 to the mandate of P-CSCF return authentication so, comprises user ID in the message, also may comprise information such as authentication token.Next, if P-PCRF receives the policy download message 906 of H-PCRF,, and, finish this process to H-PCRF transmission policy download response message 907 with regard to conversation strategy and charging regulation.
Figure 10 is the action specification of S-CSCF among the present invention.Left-hand component is described among Figure 10 is action at the S-CSCF of the second and the 3rd embodiment, and right-hand component is described is action at the S-CSCF of first embodiment.
When S-CSCF receives from the invitation message that P-CSCF comes 1001, if comprise the address of P-PCRF in the message, S-CSCF just to H-PCRF transmission authentication authorization request message the time, comprises the address information 1002 of P-PCRF in this message so.S-CSCF is normally asking can to send authentication authorization request message to H-PCRF when H-PCRF carries out policy control and charging regulation setting to user's business.When S-CSCF receives after the response message Certificate Authority of H-PCRF is answered 1003, just finish this process.
If do not comprise the address message of P-PCRF in 1001 the invitation message, whether the visited network of S-CSCF contrast subscriber equipment is the subscription network of subscriber equipment, if the same, show that so this subscriber equipment is not in roaming state, just finishes this process.Otherwise, S-CSCF send to P-CSCF after a while at the response of invitation message in to comprise the address of H-PCRF.This response message is during 200 OK or 183 sessions are carried out mostly.
Receive the register requirement of subscriber equipment as S-CSCF after, whether the visited network of contrast subscriber equipment is the subscription network of subscriber equipment, and some is so just to finish this process.Otherwise S-CSCF comprises the H-PCRF address in sending to the response message at registration message of subscriber equipment.
Figure 11 is the action specification of P-CSCF among the present invention.Left-hand component is described among Figure 11 is action at the S-CSCF of first and second embodiment, and right-hand component is described is action at the S-CSCF of the 3rd embodiment.
P-CSCF receives the invitation message of sending from UE, if comprise the address 1101 of H-PCRF in this message, P-CSCF just comprises the address 1102 of H-PCRF in the authentication authorization request message that sends to P-PCRF so, and it is strategy and charging control are carried out in its decision to the business of subscriber equipment when that P-CSCF sends authentication authorization request message to P-PCRF.When P-CSCF receives after the Certificate Authority of P-PCRF is answered message 1103, just finish this process.
If do not comprise the address of H-PCRF in the message 1101 that P-CSCF receives, and comprise the address 1104 of H-PCRF in S-CSCF sends to the response at invitation message of P-CSCF, operation just transfers to 1102.
If P-CSCF receives the invitation message of subscriber equipment, find that subscriber equipment is in roaming state 1105, P-CSCF just comprises the address information of P-PCRF in the invitation message that sends to S-CSCF so.Whether P-CSCF knows whether subscriber equipment is in roaming state, be to be that the signatory network of subscriber equipment is known by the residing network of subscriber equipment relatively.
Claims (9)
1. method of carrying out policy control under roaming state comprises step:
A) PCRF of visited network obtains strategy and charging control rule from the PCRF of the home network of subscriber equipment;
B) strategy that transmits and the charging control rule of the PCRF of the PCRF of visited network strategy that visited network is produced and charging control rule and home network merge, and generate new strategy and charging control rule;
C) PCRF of visited network is with b) the new strategy and the charging control rule that produce send to gateway.
2. method according to claim 1 is characterized in that described step a) comprises:
The PCRF of visited network obtains the address information of the PCRF of home network from the authentication authorization request message of the P-CSCF transmission of visited network.
3. method according to claim 2 is characterized in that described authentication authorization request message comprises the description to Media Stream, the grouping information of Media Stream, the address information of H-PCRF.
4. method according to claim 1 is characterized in that comprising between step a) and step b):
Whether P-PCRF analyzes its business information of receiving and is complementary with the strategy and the charging regulation of certain Media Stream of receiving from H-PCRF, if coupling, then P-PCRF returns service response message to P-CSCF.
5. method according to claim 4 is characterized in that described service response message comprises authentication token information.
6. according to the described method of one of claim 1-3, it is characterized in that the PCRF of home network and the PCRF address of visited network parse the IP address by the domain name mapping device.
7. method according to claim 1 is characterized in that also comprising step:
The P-CSCF of visited network obtains the address information of the PCRF of home network from the S-CSCF of home network;
The P-CSCF of visited network tells the PCRF of visited network with the PCRF address transmission message of home network.
8. method according to claim 1 is characterized in that also comprising step:
The P-CSCF of visited network obtains the address information of the PCRF of home network from subscriber equipment;
The P-CSCF of visited network tells the PCRF of visited network with the PCRF address transmission message of home network.
9. method according to claim 1 is characterized in that also comprising step:
The P-CSCF of visited network tells the S-CSCF of home network with the PCRF address transmission message of visited network;
S-CSCF tells the PCRF of home network with the address transmission message of the PCRF of visited network;
The PCRF of home network sends message for the PCRF of visited network, transmits the strategy and the charging regulation of customer service.
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| CNA2005101369245A CN1988722A (en) | 2005-12-20 | 2005-12-20 | Method for controling tactics under roaming state |
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