CN101378586B - Method, device and system for controlling business data stream policy - Google Patents
Method, device and system for controlling business data stream policy Download PDFInfo
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Abstract
The invention discloses a policy control method, a device and a system of a service data stream, which can lead PCRF to carry out the decision of control policy on corresponding service data stream according to the session stage of the service data stream. The method comprises the steps as follows: an application functional entity AF issues instructions to a policy and charging rule functional entity PCRF according to the session stage of the service data stream; the instructions lead the PCRF to carry out the decision of the control policy on corresponding service data stream; the AF comprises a recognition unit which is used for recognizing the session stage of the service data stream, an instruction generating unit which is used for generating corresponding instructions according to the session stage of the service data and an issuing unit which is used for issuing the instructions generated by the instruction generating unit; the PCRF comprises a receiving unit which is used for receiving the instructions of the session stage of the service data stream and a decision unit which his used for carrying out the decision of the control policy on corresponding service data according to the instructions received by the receiving unit.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of policy control method, Apparatus and system of business data flow.
Background technology
Along with the fast development of data service, the service quality of data service bearer layer is also had higher requirement with chargeing.
One, 3GPP R7 merges the SBLP among the R6 (based on the local policy of business) and two functions of FBC (based on the charging of stream), is called PCC (Policy Control and Charging policy control and charging).The logical architecture of PCC is referring to shown in Figure 1:
Wherein each functional entity effect is described as follows:
PCRF:Policy and Charging Rules Function; The "Policy and Charging Rules Function entity; This functional entity is according to the type of user access network, carrier policy, the corresponding rule of decision such as user contracting data (obtaining from the SPR functional entity) and the current ongoing business information of user (obtaining from the AF functional entity); And rule offered PCEF, carry out these rules by PCEF.Rule comprises the detection rule of business data flow (accomplish a certain business, close such as the IP adfluxion of voice), bandwidth, gate (allow or forbidden data stream through) whether, the QoS that business data flow is corresponding and based on the charging regulation of stream etc.
PCEF:Policy and Charging Enforcement Function; Strategy and charging execution function entity, this entity are carried out PCRF and are issued the perhaps rule of appointment, are exactly detection and the measurement of carrying out business data flow specifically; Guarantee the QoS of business data flow; The session management of chain of command is handled and triggered to the user plane flow, charges etc., generally is to carry gateway;
SPR:Subscription Profile Repository, the CAMEL-Subscription-Information storehouse, this functional entity provides user contracting data to PCRF;
AF:Application Function Application Function, this functional entity dynamically provides the session information of application layer to PCRF, and PCRF dynamically generates or revises corresponding rule according to this information;
OCS:Online Charging System, Online Charging System mainly is batch valency and the authentication that realizes online charging;
OFCS:Offline Charging System, off-line accounting system is mainly accomplished the offline charging function
Two, VOIP is a kind of data service commonly used, and its business function server can be a kind of AF, and this AF is handed down to PCRF with some information in the VOIP session, makes things convenient for this PCRF to generate relevant control and charging policy, and is handed down to the correct execution of PCEF.The flow process of the control strategy in the VOIP business comprises the following steps: referring to shown in Figure 2
Step 100, bearer path has been created at bearing bed in the terminal, guarantees that relevant VOIP signaling can send to AF.
Step 105 after AF receives 183 message of far-end, sends to PCRF with relevant application layer message through AAR message.
Step 106, the application layer message that PCRF combines AF to issue generates relevant control charging policy, is handed down to PCEF.
Step 109, according to the strategy that PCRF issues, the open relevant bearer path of PCEF.
Step 110～111, the heavy agreement request of some sessions midway and responses, for example UPDATE etc.
Step 113～115, PCRF generates relevant strategy according to up-to-date session and sends to PCEF through RAR message, and PCEF returns response message RAA, and PCRF also will return response message AAA.
Step 116, the open relevant bearer path of PCEF.
The inventor finds in the VOIP business in the invention process; Exist bearing bed need distinguish the demand of policy control according to the different sessions stage of business data flow, for example: we are called Early media with the business data flow of called off-hook front transfer, consist predominantly of CRBT; Announcement, advertisement etc.This Early media generally is not real called sending, but the entities in the middle of some send.
Summary of the invention
The embodiment of the invention provides a kind of policy control method, Apparatus and system of business data flow, so that PCRF can carry out the decision-making of control strategy according to the residing session stage of business data flow to the related service data flow.
The method of the embodiment of the invention comprises: Application Function AF is according to the residing session stage of business data flow, to the indication of "Policy and Charging Rules Function entity PCRF issuing service data flow session stage of living in; Said indication makes this PCRF carry out the decision-making of control strategy to the business data flow of indication; Wherein, said AF is according to whether receiving final response message that initial session is set up or according to the information in the session signaling, the residing session stage of identification services data flow; Information in the said session signaling comprises: the early stage business data flow indication information of the business data flow that carries among the message body SDP of SIP; Said session stage comprises: the conversation establishing last stage of the Early media of same session stream and non-Early media stream stage or same session and the charging stage of successful establishing stage of session or same session and do not charge the stage.
The Application Function of the embodiment of the invention comprises: recognition unit is used for whether receiving final response message that initial session is set up or according to the residing session stage of information Recognition business data flow of session signaling according to this Application Function; Information in the said session signaling comprises: the early stage business data flow indication information of the business data flow that carries among the message body SDP of SIP; Said session stage comprises: charging stage of the conversation establishing last stage of the Early media of same session stream and non-Early media stream stage, same session and the successful establishing stage of session, same session and not chargeing the stage; The indication generation unit is used for according to the residing session stage of business data flow, generates the indication with said session stage corresponding service data flow session stage of living in;
Issue the unit, be used for the indication of the business data flow session stage of living in of indicating generation unit to generate is issued.
The "Policy and Charging Rules Function entity of the embodiment of the invention comprises: receiving element is used to receive the indication of the residing session stage of business data flow; Said session stage comprises: the conversation establishing last stage of the Early media of same session stream and non-Early media stream stage or same session and the charging stage of successful establishing stage of session or same session and do not charge the stage; Decision package is used for the indication of receiving according to receiving element, and the business data flow of indication is carried out the decision-making of control strategy.
The policy controlling system of the business data flow of the embodiment of the invention comprises: according to the Application Function AF of the indication of business data flow residing session stage issuing service data flow session stage of living in; Wherein, said session stage comprises: the conversation establishing last stage of the Early media of same session stream and non-Early media stream stage or same session and the charging stage of successful establishing stage of session or same session and do not charge the stage; Receive the indication that AF issues, and according to this indication, the "Policy and Charging Rules Function entity PCRF that the business data flow of indication is carried out the decision-making of control strategy;
Wherein, said AF comprises: recognition unit is used for whether receiving final response message that initial session is set up or according to the residing session stage of information Recognition business data flow of session signaling according to this Application Function; Information in the said session signaling comprises: the early stage business data flow indication information of the business data flow that carries among the message body SDP of SIP; Said session stage comprises: the conversation establishing last stage of the Early media of same session stream and non-Early media stream stage or same session and the charging stage of successful establishing stage of session or same session and do not charge the stage; The indication generation unit is used for according to the residing session stage of business data flow, generates the indication with said session stage corresponding service data flow session stage of living in; Issue the unit, be used for the indication of the business data flow session stage of living in of indicating generation unit to generate is issued;
Said PCRF comprises: receiving element is used to receive the indication of the residing session stage of business data flow; Said session stage comprises: the conversation establishing last stage of the Early media of same session stream and non-Early media stream stage or same session and the charging stage of successful establishing stage of session or same session and do not charge the stage; Decision package is used for the indication of receiving according to receiving element, and the business data flow of indication is carried out the decision-making of control strategy.
In the embodiment of the invention,, but also, issue the indication that can show business data flow session stage of living in to PCRF according to the residing session stage of business data flow because AF not only is handed down to PCRF with some information in the session; So PCRF can be known business data flow session stage of living in according to this indication, and the related service data flow is carried out the decision-making of control strategy targetedly according to the current sessions stage.
Description of drawings
Fig. 1 is the sketch map of existing P CC logical architecture;
Fig. 2 is the flow chart of control strategy in the existing VOIP business;
Fig. 3 is the method step flow chart of the embodiment of the invention;
Fig. 4 is the structural representation of the Application Function of the embodiment of the invention;
Fig. 5 is the structural representation of the "Policy and Charging Rules Function entity of the embodiment of the invention;
Fig. 6 is the flow chart of the embodiment of the invention 1;
Fig. 7 is the flow chart of the embodiment of the invention 2;
Fig. 8 is the flow chart of the embodiment of the invention 3.
Embodiment
In order to make PCRF carry out the decision-making of control strategy to the related service data flow according to the residing session stage of business data flow, the embodiment of the invention provides a kind of policy control method of business data flow, and referring to shown in Figure 3, it comprises following key step:
S1, AF issue indication according to the residing session stage of business data flow to PCRF.
At first, AF is according to whether receiving final response message that initial session is set up or according to the information in the session signaling, the residing session stage of identification services data flow.
Concrete, the final response message that said initial session is set up is the 200OK message of the invite of SIP; Information in the session signaling is the popular early stage business data flow indication information of business datum entrained among the message body SDP of SIP.
Concrete, business data flow is meant the business data flow that this session is relevant; Session stage can comprise: the different business stage of same session (Early media stream and non-Early media stream stage), the successful establishing stage of the conversation establishing last stage of same session and session, or charging stage of same session and not chargeing the stage.
Secondly, AF issues indication through one of following dual mode to PCRF:
S2, PCRF indicate according to this, the related service data flow are carried out the decision-making of control strategy.
The decision-making that PCRF makes specifically comprises: the decision-making of Qos, the decision-making of gate, the decision-making of charging etc.; As: the business data flow of the moment of making a strategic decision out uses designated bandwidth, the flow direction of the business data flow of the restriction moment of making a strategic decision out, the moment of making a strategic decision out business data flow is exempted from charging etc.
The embodiment of the invention also provides a kind of Application Function, and referring to shown in Figure 4, it comprises: recognition unit, indicate generation unit and issue the unit.
Recognition unit is used for the residing session stage of identification services data flow.Concrete, whether said recognition unit receives final response message that initial session is set up according to this Application Function or according to the residing session stage of information Recognition business data flow in the session signaling.The final response message that said initial session is set up is the 200OK message of the invite of SIP; Information in the session signaling is the popular early stage business data flow indication information of business datum entrained among the message body SDP of SIP.Said business data flow is meant the business data flow that this session is relevant; Session stage can comprise: the different business stage of same session (Early media stream and non-Early media stream stage), the successful establishing stage of the conversation establishing last stage of same session and session, or charging stage of same session and not chargeing the stage.
The indication generation unit is used for according to the residing session stage of business data flow, generates corresponding indication.Concrete, said indication generation unit is with the residing session stage of value indicating services data flow of the special parameter in the message that issues; Perhaps to have or not the residing session stage of special parameter indicating services data flow in the message that issues.For example AF carries special parameter in the message that PCRF issues, and then the indicating services data flow is in first session stage, otherwise the indicating services data flow is in second session stage.
Issue the unit, be used for the indication that the indication generation unit generates is issued.
The embodiment of the invention also provides a kind of "Policy and Charging Rules Function entity, and referring to shown in Figure 5, it comprises: receiving element and decision package.
Receiving element is used to receive the indication of the residing session stage of business data flow.
Decision package is used for the indication of receiving according to receiving element, the related service data flow is carried out the decision-making of control strategy.The decision-making of making specifically comprises: the decision-making of Qos, the decision-making of gate, the decision-making of charging etc.; As: the business data flow of the moment of making a strategic decision out uses designated bandwidth, the flow direction of the business data flow of the restriction moment of making a strategic decision out, the moment of making a strategic decision out business data flow is exempted from charging etc.
The embodiment of the invention also provides a kind of policy controlling system of business data flow, and it comprises: AF and PCRF.
AF is used for issuing indication according to the residing session stage of business data flow.Further can comprise among this AF: recognition unit is used for according to whether receiving final response message that initial session is set up or according to the information of session signaling, the residing session stage of identification services data flow.And/or the indication generation unit is used for the residing session stage of value indicating services data flow with the special parameter of the message that issues to PCRF; Perhaps to have or not the residing session stage of special parameter indicating services data flow in the message that issues.
PCRF is used to receive the indication that AF issues, and according to this indication, the related service data flow is carried out the decision-making of control strategy.The decision-making of making specifically comprises: the decision-making of Qos, the decision-making of gate, the decision-making of charging etc.; As: the business data flow of the moment of making a strategic decision out uses designated bandwidth, the flow direction of the business data flow of the restriction moment of making a strategic decision out, the moment of making a strategic decision out business data flow is exempted from charging etc.
Below specifically describe the method for the embodiment of the invention through three embodiment.
Embodiment 1-AF (Calling Side) gives PCRF to the indication that Early media issues an Early media, and this indication can be a media-level, also can be session level.Referring to shown in Figure 6, comprise the following steps:
Step 201～202, the INVITE request is sent to AF in the terminal, and AF should ask to transmit to far-end.
Step 203～204, far end response 180 message, AF gives the terminal with this 180 forwards, this moment, far-end sent some Early media, for example, called subscriber's ring-back tone.
Step 205, AF is according to the information in the session signaling 180, and identifying which the business data flow stream of consulting this moment is Early media, combines local policy afterwards, and AF allows bearing bed to pass through Early media.And AF extracts relevant business datum stream information and is handed down to PCRF, in the information that issues, need carry the Early media indication to Early media stream, and this indication shows it is Early media with the value of special parameter.If the business data flow of consulting stream is Early media all, this indication can be a session level so, and its position just is included in the structure of conversation description:
If partial service data flow stream is Early media, this indication is a media-level so, and its particular location just is included in the structure of business datum stream description:
Wherein the value of parameter Early-Media-Indication is 1, indicates this stage also not have formal beginning user's communication, and the business data flow stream that the permission of this moment is passed through is Early media (called subscriber's jingle bell sound).
Step 206; The value of parameter Early-Media-Indication in the related service traffic flow information that PCRF issues according to AF; For the corresponding Early media rules specific of making a strategic decision out, for example can be that the data flow of Early media is set pre-configured bandwidth information, perhaps only allow the data flow of unidirectional Early media; The data flow of Early media is exempted from charging etc., and the rule of making a strategic decision out is sent to PCEF through RAR message.
Step 207～208, PCEF sends the response message RAA of RAR, and PCRF sends the response message AAA of AAR to AF.
Step 209, PCEF opens relevant bearer path according to the indication of PCRF, and according to the rule that PCRF issues business data flow is carried out policy control.
Step 210～211, AF receives the 200OK (being the final response message that initial session is set up) of far end response, AF gives the terminal with this message forward pass.
Step 212, AF the business data flow that the current business data flow is the user to receive the information Recognition of carrying in final response message that initial session is set up or the message.Therefore AF session service traffic flow information that two end subscribers are consulted is handed down to PCRF, in the information that issues, does not carry the Early-Media-Indication parameter, and what show that the user consults is formal session service data flow; Perhaps in the information that issues, carry parameter Early-Media-Indication, and be 0 with the value of parameter Early-Media-Indication, what the indication user consulted is formal session service data flow.
Step 213, the session service traffic flow information that PCRF issues according to AF know that the stage of Early media finishes, the policy control rule of then making a strategic decision out relevant according to normal session information, and be handed down to PCEF through RAR message.
Step 214～215, PCEF is to PCRF response RAA message, and PCRF is to AF response AAA message.
Step 216, PCEF opens relevant bearer path according to the indication of PCRF, and according to the rule that PCRF issues business data flow is carried out normal policy control.
Annotate: present embodiment also can be implemented at the AF of callee side.
After embodiment 2-AF receives the final response message that the initial session of remote subscriber sets up, issue the indication that session begins and give PCRF, PCRF issues the strategy and the charging regulation of user conversation to PCEF according to this indication.Referring to shown in Figure 7, comprise the following steps:
Step 300, bearer path has been created at bearing bed in the terminal, guarantees that relevant VOIP signaling can send to AF.
Step 301～302, the INVITE request is sent to AF in the terminal, and AF should ask to transmit to far-end.
Step 303～304, far end response 180 message, AF gives the terminal with this 180 forwards, this moment, far-end sent some Early media, for example, called subscriber's ring-back tone.
Step 306; PCRF is not before receiving that session begins indication; Assert that according to default rule the current business data flow is an Early media, and go out specific strategy and charging regulation, and can dependency rule be sent to PCEF through RAR message for the decision-making of corresponding business data flow.
Step 307～308, PCEF sends the response message RAA of RAR, and PCRF sends the response message AAA of AAR to AF.
Step 309, PCEF opens relevant bearer path according to the indication of PCRF, and according to the rule that PCRF issues current business data flow (being Early media) is carried out policy control.
Step 310～311, AF receives the 200OK (being the final response message that initial session is set up) of far end response, AF gives the terminal with this message forward pass.
Step 312, AF identifies the business data flow that the current business data flow is the user to receive the final response message that initial session is set up.Therefore AF is handed down to PCRF with the session service traffic flow information of two end subscribers negotiation, and in the information that issues, carries special parameter, and indicates the stage of Early media to finish with the value of this special parameter, and the user will begin formal session.This indicates concrete message format following:
Wherein the value of parameter S ession-Start-Indication is 1, and indication user's formal session has begun.
Step 313; The value of Session-Start-Indication in the session service traffic flow information that PCRF issues according to AF is 1; The stage of knowing Early media finishes, then make a strategic decision out user conversation strategy and charging regulation, and be handed down to PCEF through RAR message.
Step 314～315, PCEF is to PCRF response RAA message, and PCRF is to AF response AAA message.
Step 316, PCEF opens relevant bearer path according to the strategy of PCRF, and according to the rule that PCRF issues current business data flow (being user's professional business data flow) is carried out policy control.
Annotate: present embodiment also can be implemented at the AF of callee side.
Embodiment 3-AF issues the relevant indication of chargeing to Early media and gives PCRF, and this indication can be a media-level, also can be session level, and present embodiment is an example with media-level.Referring to shown in Figure 8, comprise the following steps:
Step 400, bearer path has been created at bearing bed in the terminal, guarantees that relevant VOIP signaling can send to AF.
Step 401～402, the INVITE request is sent to AF in the terminal, and AF should ask to transmit to far-end.
Step 403～404, far end response 180 message, AF gives the terminal with this 180 forwards, this moment, far-end sent some Early media, for example, called subscriber's ring-back tone.
Step 405; AF is according to the state (not receiving the final response message of the initial session foundation of remote subscriber) of session; Perhaps according to the message of (in SIP) in the session signaling; Identifying the business data flow stream of consulting this moment is Early media, combines local policy afterwards, and AF allows bearing bed to pass through Early media.And AF extracts relevant business datum stream information and is handed down to PCRF, in the information that issues, need carry special parameter, and is Early media according to the business data flow stream of consulting this moment, need not charge with the value indication of this special parameter.Hypothesis should indication only be directed against the believable Early media of part in the present embodiment.This indicates concrete message format following:
Or:
Wherein the value of parameter F ree-Charging-Indication is 1, indicates this business data flow to charge.
Step 406, the value that PCRF identifies the parameter F ree-Charging-Indication in the related service traffic flow information that AF issues is 1, indicates this business data flow to charge; The relevant indication of the charging that PCRF issues with reference to AF, and to combine local charging policy be the corresponding Early media specific charging policy of making a strategic decision out, and control of making a strategic decision out and charging regulation are sent to PCEF through RAR message.
Step 407～408, PCEF sends the response message RAA of RAR, and PCRF sends the response message AAA of AAR to AF.
Step 409, PCEF opens relevant bearer path according to the indication of PCRF, and according to the charging regulation that PCRF issues current business data flow (being Early media) is chargeed.
Step 410～411, AF receives the 200OK (being the final response message that initial session is set up) of far end response, AF gives the terminal with this message forward pass.
Step 412, AF identifies the business data flow that the current business data flow is the user to receive the final response message that initial session is set up.Therefore AF is handed down to PCRF with the session service traffic flow information of two end subscribers negotiation, in the information that issues, does not carry the Free-Charging-Indication parameter, and indication needs normal billing; Perhaps in the information that issues, carry the Free-Charging-Indication parameter, and be 0 with the value of parameter F ree-Charging-Indication, indication needs normal billing.
Step 413, the session service traffic flow information that PCRF issues according to AF know that AF indication current business data flow needs charge; PCRF is with reference to the indication of AF, and combines local normal conversation information decision to go out relevant strategy and charging regulation, and is handed down to PCEF through RAR message.
Step 414～415, PCEF is to PCRF response RAA message, and PCRF is to AF response AAA message.
Step 416, PCEF opens relevant bearer path according to the indication of PCRF, and according to the charging policy that PCRF issues current business data flow (being user's business data flow) is carried out normal charging flow.
In sum, in the embodiment of the invention, AF not only is handed down to PCRF with some information in the session, but also according to the residing session stage of business data flow, issues the indication that can show business data flow session stage of living in to PCRF; So PCRF can be known business data flow session stage of living in according to this indication, and the related service data flow is carried out the decision-making of control strategy targetedly according to the current sessions stage.
And then satisfied the bearing bed needs are distinguished policy control according to the different sessions stage of business data flow demand.For example:, can carry out free policy control to the calling party for the data flow of Ring Back Tone service; Can limit its bandwidth for the data flow of Ring Back Tone service.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (7)
1. the policy control method of a business data flow is characterized in that, comprises the following steps:
Application Function AF is according to the residing session stage of business data flow, to the indication of "Policy and Charging Rules Function entity PCRF issuing service data flow session stage of living in; Said indication makes this PCRF carry out the decision-making of control strategy to the business data flow of indication; Wherein, said AF is according to whether receiving final response message that initial session is set up or according to the information in the session signaling, the residing session stage of identification services data flow; Information in the said session signaling comprises: the early stage business data flow indication information of the business data flow that carries among the message body SDP of SIP; Said session stage comprises: the conversation establishing last stage of the Early media of same session stream and non-Early media stream stage or same session and the charging stage of successful establishing stage of session or same session and do not charge the stage.
2. the method for claim 1 is characterized in that, said issue the indication be specially: AF carries special parameter in the message that PCRF issues, with the residing session stage of this values of parameters indicating services data flow.
3. the method for claim 1; It is characterized in that; Said session comprises first session stage and second session stage, then said issue the indication be specially: AF carries special parameter in the message that PCRF issues, then the indicating services data flow is in first session stage; Do not carry special parameter, then the indicating services data flow is in second session stage.
4. an Application Function is characterized in that, comprising:
Recognition unit is used for whether receiving final response message that initial session is set up or according to the residing session stage of information Recognition business data flow of session signaling according to this Application Function; Information in the said session signaling comprises: the early stage business data flow indication information of the business data flow that carries among the message body SDP of SIP; Said session stage comprises: the conversation establishing last stage of the Early media of same session stream and non-Early media stream stage or same session and the charging stage of successful establishing stage of session or same session and do not charge the stage;
The indication generation unit is used for according to the residing session stage of business data flow, generates the indication with said session stage corresponding service data flow session stage of living in;
Issue the unit, be used for the indication of the business data flow session stage of living in of indicating generation unit to generate is issued.
5. Application Function as claimed in claim 4 is characterized in that, said indication generation unit is with the residing session stage of value indicating services data flow of the special parameter in the message that issues; Perhaps to have or not the residing session stage of special parameter indicating services data flow in the message that issues.
6. a "Policy and Charging Rules Function entity is characterized in that, comprising:
Receiving element is used to receive the indication of the residing session stage of business data flow; Said session stage comprises: the conversation establishing last stage of the Early media of same session stream and non-Early media stream stage or same session and the charging stage of successful establishing stage of session or same session and do not charge the stage;
Decision package is used for the indication of receiving according to receiving element, and the business data flow of indication is carried out the decision-making of control strategy.
7. the policy controlling system of a business data flow is characterized in that, comprising:
Application Function AF according to the indication of business data flow residing session stage issuing service data flow session stage of living in; Wherein, said session stage comprises: charging stage of the conversation establishing last stage of the Early media of same session stream and non-Early media stream stage, same session and the successful establishing stage of session, same session and not chargeing the stage;
Receive the indication that AF issues, and according to this indication, the "Policy and Charging Rules Function entity PCRF that the business data flow of indication is carried out the decision-making of control strategy;
Wherein, said AF comprises: recognition unit is used for whether receiving final response message that initial session is set up or according to the residing session stage of information Recognition business data flow of session signaling according to this Application Function; Information in the said session signaling comprises: the early stage business data flow indication information of the business data flow that carries among the message body SDP of SIP; Said session stage comprises: the conversation establishing last stage of the Early media of same session stream and non-Early media stream stage or same session and the charging stage of successful establishing stage of session or same session and do not charge the stage; The indication generation unit is used for according to the residing session stage of business data flow, generates the indication with said session stage corresponding service data flow session stage of living in; Issue the unit, be used for the indication of the business data flow session stage of living in of indicating generation unit to generate is issued;
Said PCRF comprises: receiving element is used to receive the indication of the residing session stage of business data flow; Said session stage comprises: the conversation establishing last stage of the Early media of same session stream and non-Early media stream stage or same session and the charging stage of successful establishing stage of session or same session and do not charge the stage; Decision package is used for the indication of receiving according to receiving element, and the business data flow of indication is carried out the decision-making of control strategy.
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| CN102136983A (en) * | 2010-01-25 | 2011-07-27 | 中兴通讯股份有限公司 | Method and system for controlling resource in full-service converged network |
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