CN101998323B - Policy and charging control-based redirection method and device - Google Patents
Policy and charging control-based redirection method and device Download PDFInfo
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Abstract
The invention discloses a policy and charging control-based redirection method. In the method, correspondence between a redirection list and indication information is set. The method also comprises the following steps of: a policy control and charging rules function (PCRF) entity transmits the indication information corresponding to a redirection server to a gateway (GW)/policy and charging enforcement function (PCEF) entity when detecting that user session needs to be redirected; and the GW/PCEF determines an address of the redirection server according to the received indication information and a local redirection list and redirects the user session to be directed to a server corresponding to the address. The invention also discloses a policy and charging control-based redirection device. By using the method and the device, the redirection of the user session can be realized.
Description
Technical field
The present invention relates to the redirecting technique in wireless communication system, especially relate to a kind of reorientation method and device based on strategy and charging control.
Background technology
Along with the development of wireless communication system, at third generation partner program stage 7 (3GPP Release7,3rd Generation Partnership Project Release7) standards system in, strategy and billing function are realized by strategy and charging control (PCC, Policy and Charging Control) framework.PCC framework is a functional framework that can be applied to multiple access technology, for example, PCC framework can be applied to universal mobile telecommunications system (UMTS, Universal Mobile Telecommunications System) land radio access web (UTRAN, UMTS Terrestrial Radio Access Network), global system for mobile communications (GSM, Global system for Mobile Communication)/GSM data strengthen evolution (EDGE) wireless access network and intercommunicated wireless local area network (I-WLAN) etc.
At present, PCC framework is mainly realized two large functions: policy control functions and billing function, Fig. 1 is the entirety composition structural representation of PCC framework in the 3GPP stage 8 (Release 8), below with reference to shown in Fig. 1, each logical functional entity and interface function thereof in PCC framework being described.
As shown in Figure 1, PCC framework in 3GPP Release 8 comprises Application Function (AF, Application Function), policy control and charging regulation function entity (PCRF, Policy andCharging Rules Function), strategy and charging execution function entity (PCEF, Policy and ChargingEnforcement Function)/gateway (GW, Gate-Way), user-subscribed database (SPR, Subscription Profile Repository), bearing binding and event reporting function entity (BBERF, BearerBinding and Event Reporting Function), Online Charging System (OCS, Online ChargingSystem) and off-line accounting system (OFCS, Offline Charging System), wherein,
AF, provides the access point of service application, and the Internet resources that each service application is used need to carry out dynamic policy control.In the time that service surface is carried out parameter negotiation, related service information is passed to PCRF by AF, if related service information is consistent with the strategy of PCRF, PCRF accepts current negotiation; Otherwise PCRF refuses current negotiation, and in feedback, provide the acceptable service parameter of PCRF simultaneously.Afterwards, AF can return to these parameters subscriber equipment (UE, User Equipment).Wherein, between AF and PCRF, connect and interactive information by Rx interface.
PCRF is the core of PCC framework, is responsible for the formulation of strategic decision-making and charging regulation; PCRF provides the rule of the network control based on business data flow, described network control at least comprises detection, gate (Gating Control), service quality (QoS, Quality of Service) control and the charging regulation based on data flow etc. of business data flow; PCRF sends to PCEF to carry out the strategy of its formulation and charging regulation, and meanwhile, PCRF also needs to ensure that the rule of formulating is consistent with user signing contract information.Conventionally, PCRF generate strategy and charging regulation according to comprising: obtain and the information of traffic aided from AF; Obtain and subscriber policy and billing control and subscription information from SPR; Obtain and carry the relevant network information from PCEF.
PCEF, be usually located on the GW of network, as: the packet data gateway (PDG in GGSN (GGSN) and I-WLAN in GPRS (GPRS), Packet DataGateway), carry out at loading end strategy and the charging regulation that PCRF formulates; Business datum flow filter in the rule that PCEF sends according to PCRF detects business data flow, and then these business data flows are carried out to strategy and the charging regulation that PCRF formulates.In the time that carrying is set up, the rule that PCEF sends according to PCRF is carried out QoS mandate, and carries out gate control according to the execution of AF; The charging regulation sending according to PCRF, PCEF carries out corresponding service data flow charge operation, and charging can be both online charging, can be also offline charging.If online charging, PCEF need to carry out credit management together with OCS; If offline charging, PCEF needs exchange correlation charge information between OFCS.Between PCEF and PCRF, adopt Gx interface, between PCEF and OCS, adopt Gy interface, between PCEF and OFCS, adopt Gz interface.
SPR stores subscriber policy and the billing control and subscription information that policy control is relevant to charging; Between SPR and PCRF, adopt Sp interface.
OCS carries out the control and management of user credit under online charging mode together with PCEF.
OFCS completes the billing operation under offline charging mode together with PCEF.
PCRF issues IP by Gxx interface to BBERF and connects the relevant QoS rule of Access Network (IP-CAN) session, issues the PCC rule that IP-CAN session is relevant by Gx interface to PCEF.BBERF function comprises checking and the event report of bearing binding, up bearing binding, BBERF is present in gateway conventionally, as: evolved packet system (EPS, Evolved Packet System) in gateway (SGW, Serving Gateway), the packet data gateway (ePDG, Evolved Packet Data Gateway) of evolution and for accessing non-3 GPP access network pass of EPS system etc.When user is by non-3GPP access EPC or E-UTRAN access EPC, and while adopting PMIP agreement between SGW and packet gateway (PGW), PCC framework needs BBERF functional entity.
PCC framework based on shown in Fig. 1, the implementation procedure of the IP-CAN session modification flow process that PCRF initiates as shown in Figure 2, by the flow process of Fig. 2, in the time that PCRF receives service request, PCRF is according to the user signing contract information obtaining from SPR at IP-CAN establishment stage, authorize and strategic decision-making for this user, and this decision information is handed down to PCEF, carried out by PCEF.Shown in Figure 2, the IP-CAN session modification flow process that PCRF initiates comprises the following steps:
Step 201～202:PCRF carries out PCC rule for current customer service and authorizes and formulate PCC strategic decision-making, and afterwards, PCRF issues the strategic decision-making content of formulation to the PCEF in GW;
Here, if the PCC of customer service rule authorization failure, as: in SPR, signing related service, PCC refuse this business etc. after detecting, and PCRF can send request to GW the message of authorization failure, and process ends;
Step 203～204, PCEF carry out GW strategic decision-making after receiving the strategic decision-making that PCRF sends; After implementation strategy decision-making, PCEF returns to response message to PCRF.
Before PCRF formulates PCC strategic decision-making, this flow process can further comprise that step 200:AF sends customer service request to PCRF; PCRF returns to customer service response to AF.
Can find out according to above-mentioned flow process, at least there are the following problems for the IP-CAN session modification flow process that existing PCRF initiates: 1) common, during for the regular authorization failure of the business PCC in IP-CAN session modification flow process, be included in not signing related service in SPR, or PCC detects the situations such as rear this business of refusal, PCRF just sends request the message of authorization failure simply to GW, so, can cause user's session to be refused simply, thereby cannot be rejected situation to business and carry out display alarm by redirected mode to user, more cannot make GW that user's session redirection is arrived to other servers.
2) after successfully setting up for session, if for a certain reason, the signing consumption of such as user arrives the situations such as signing value, local timing information triggering, need to carry out redirect operation to user conversation, that is: user's session redirection is arrived to other servers, to realize, user's subsequent operation is waited while carrying out display reminding as continued to pay dues, at present and the redirected implementation that nobody proposes to be correlated with.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of reorientation method and device based on strategy and charging control, can realize being redirected user conversation.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of reorientation method based on strategy and charging control, comprising: the corresponding relation that redirection list and indication information are set; The method also comprises:
PCRF detects need to be redirected user conversation time, sends indication information corresponding to Redirect Server to GW/PCEF;
GW/PCEF receives after described indication information, determines the address of Redirect Server according to local redirection list, and user conversation redirected need is redirected to server corresponding to described address.
Wherein, described redirection list is arranged at GW/PCEF, and described redirection list stores the address of Redirect Server and the corresponding relation of indication information.
In such scheme, described need to comprising the redirected situation of user conversation: PCC rule authorization failure, satisfied default trigger condition.
In such scheme, described PCRF sends indication information corresponding to Redirect Server to GW/PCEF and is: described indication information is carried on and in re-authentication authorization request message, sends or described indication information is carried in Credit Control Answer message and is sent.
The present invention also provides a kind of redirection device based on strategy and charging control, comprises setting unit, transmitting element, reception and redirected unit; Wherein,
Setting unit, for arranging the corresponding relation of redirection list and indication information;
Transmitting element, need to be redirected user conversation time, sends indication information corresponding to Redirect Server to GW/PCEF for detecting at PCRF;
Receive and redirected unit, receive after described indication information for GW/PCEF, determine the address of Redirect Server according to local redirection list, and user conversation redirected need is redirected to server corresponding to described address.
Provided by the present invention based on strategy and reorientation method and the device of charging control, the corresponding relation of redirection list and indication information is set; When PCRF detect need to user conversation be redirected time, PCRF sends indication information corresponding to Redirect Server to GW/PCEF, GW/PCEF determines the address of Redirect Server according to local redirection list after receiving indication information, and user conversation redirected need is redirected.So, can be after PCC rule authorization failure or session be successfully set up but while needing for a certain reason session to be redirected, can support PCRF to complete redirected to user conversation.
Brief description of the drawings
Fig. 1 is the entirety composition structural representation of PCC framework in 3GPP Release 8;
Fig. 2 is the implementation procedure schematic diagram of the IP-CAN session modification flow process of PCRF initiation;
Fig. 3 is the realization flow schematic diagram of the inventive method;
Fig. 4 is the realization flow schematic diagram of the inventive method embodiment mono-;
Fig. 5 is the realization flow schematic diagram of the inventive method embodiment bis-;
Fig. 6 is the realization flow schematic diagram of the inventive method embodiment tri-.
Embodiment
Basic thought of the present invention is: the corresponding relation that redirection list and indication information are set, when PCRF detect need to user conversation be redirected time, PCRF sends indication information corresponding to Redirect Server to GW/PCEF, GW/PCEF receives after indication information, determine the address of Redirect Server according to local redirection list, and user conversation redirected need is redirected to server corresponding to determined address.
Here, described redirection list is generally positioned on GW/PCEF, in redirection list, store and can be used for the address of redirected Redirect Server and the corresponding relation of indication information, that is to say, can be indication information of each Servers installed in advance, this indication information is used for server of unique identification, and sets up the corresponding relation between indication information and redirection list.Wherein, described indication information can be the index value in redirection list or generate or directly set according to index value; For the indication information of each Servers installed can be that GW and PCRF make an appointment or consult, GW, PCRF all can identify respective server according to indication information, or provide corresponding indication information according to server.
In the present invention, user conversation refers to user's IP-CAN session, and described PCRF detects need to be to user's IP-CAN session redirection, i.e. redirected triggering reason, mainly comprises two kinds of situations:
One is, in the time of the regular authorization failure of the business PCC in IP-CAN session modification flow process, be included in the situation such as signing related service or this business of the rear refusal of PCC detection in SPR, PCRF will issue the indication information that Redirect Server is corresponding to PCEF, to realize being redirected user conversation;
Another kind is, after session is successfully set up, for a certain reason, consumption as signing in user arrives the situations such as signing threshold value or local timing information triggering, need to carry out to user's subsequent operation display reminding as continued to pay dues etc., need to be redirected user time, PCRF will issue the indication information that Redirect Server is corresponding to PCEF, to realize being redirected user conversation.
The present invention is based on the reorientation method of strategy and charging control as shown in Figure 3, comprise the following steps:
Step 300: the corresponding relation between redirection list and indication information is set;
Here, redirection list is arranged on GW/PCEF; Corresponding indication information can generate according to the index value of redirection list on PCRF, and wherein, indication information can directly adopt index value, as use 1,2,3...... represents; Or indication information generates according to index value, if index value is 1, corresponding indication information is a, and index value is 2, and corresponding indication information is b etc.; Certainly, indication information also can directly be set, as: the indication information that server 1 is directly set is a, and the indication information that server 2 is directly set is b etc.
Step 301:PCRF detects that need to be to user's session redirection time, PCRF sends indication information corresponding to Redirect Server to GW/PCEF;
Here, described PCRF transmission indication information is: PCRF sends the message that carries the indication information that Redirect Server is corresponding to GW/PCEF.
Step 302:GW/PCEF receives after this indication information, determines the address of Redirect Server, and user conversation redirected need is redirected to server corresponding to determined address according to the redirection list of the indication information of receiving and self storage.
For instance, suppose that the server that PCRF will be redirected to user conversation is server 3, the indication information of server 3 correspondences is c, and the server address of server 3 correspondences is 100.0.0.10; So, PCRF sends the message that carries indication information c to GW/PCEF, after GW/PCEF receives, according to the corresponding relation between the indication information c storing in redirection list and server address 100.0.0.10, the server address of determining Redirect Server is 100.0.0.10, by active user's session redirection to server corresponding to 100.0.0.10.
Below in conjunction with drawings and Examples, the concrete processing procedure of the reorientation method that the present invention is based on strategy and charging control is further described.
Embodiment mono-:
In the present embodiment, redirection list is arranged on the PCEF in GW, redirected triggering reason is: PCC rule authorization failure and the PCRF based on business information that causes triggers is redirected, concrete, due to active user's service profile not in the user signing contract information obtaining or the local policy decision-making of PCRF use for having no right, make PCC rule authorization failure.
Reorientation method based on strategy and charging control in the present embodiment as shown in Figure 4, comprises the following steps:
Step 400: the corresponding relation between redirection list and indication information is set;
Here, redirection list is arranged on PCEF; And this step completes conventionally in the time that system starts.
Step 401:AF sends user business request information to PCRF, PCRF storage user service information, and return to customer service response message to AF;
In practical application, this step is optional, and AF can not initiate customer service request to PCRF.
Step 402: when PCRF detect the user signing contract information obtaining from SPR not this service profile or this business according to the local policy decision-making of PCRF when having no right to use, PCRF will be redirected this user conversation;
Step 403:PCRF sends re-authentication authorization request message Diameter RAR (Re-Auth-Request) to PCEF, carries the indication information that Redirect Server is corresponding in message;
Step 404:PCEF receives after indication information, according to the redirection list of the indication information of receiving and self storage, obtains the address of Redirect Server, then user conversation is redirected to the server that obtained address is pointed to;
Step 405:PCEF sends re-authentication authorization response message Diameter RAA (Re-Auth-Answer) to PCRF and confirms.
When the present embodiment has solved in prior art PCC rule authorization failure, problem that cannot be redirected to user conversation.
Embodiment bis-:
In the present embodiment, it is upper that redirection list is arranged at PCEF in GW, and redirected triggering reason is: PCR-based F local policy and triggering meets certain default trigger condition that is:.
Reorientation method based on strategy and charging control in the present embodiment as shown in Figure 5, comprises the following steps:
Step 500: the corresponding relation between redirection list and indication information is set;
Here, redirection list is arranged on PCEF; And this step completes conventionally in the time that system starts.
Step 501: successfully set up the User IP-CAN session based on service request between user and AF;
Step 502:PCRF detects that local certain default condition is triggered, for example, arrive certain default time point, and PCRF triggers the decision-making again of PCC strategy, and to User IP-CAN, session is redirected;
Step 503:PCRF sends re-authentication authorization request message Diameter RAR to PCEF, carries the indication information that Redirect Server is corresponding in message;
Step 504:PCEF receives after indication information, according to the redirection list of the indication information of receiving and self storage, obtains the address of Redirect Server, then user conversation is redirected to the server that obtained address is pointed to;
Step 505:PCEF sends re-authentication authorization response message Diameter RAA to PCRF and confirms.
The present embodiment has solved PCR-based F local policy in prior art cannot carry out redirected problem to user conversation.
Embodiment tri-:
In the present embodiment, redirection list is arranged on the PCEF in GW, and redirected triggering reason is: based on event information, that is: meet certain default condition and produce appointment trigger event.
Reorientation method based on strategy and charging control in the present embodiment as shown in Figure 6, comprises the following steps:
Step 600: the corresponding relation between redirection list and indication information is set;
Here, redirection list is arranged on PCEF; And this step completes conventionally in the time that system starts.
Step 601: successfully set up IP-CAN session between user and AF, and PCRF has set event trigger (Event Trigger) to PCEF;
Here, described event trigger is: the consumption to user's period is added up, and reports, i.e. trigger event when consumption arrives a certain predetermined threshold value.
Step 602:PCEF detects that allocate event occurs, and detects that user's accumulative total consumption has reached predetermined threshold value that is:;
Step 603:PCEF reports by credit control request information Diameter CCR (Credit-Control-Request) event detecting to PCRF, PCEF sends event report to PCRF;
Step 604:PCRF user's consumption that this reports by PCEF and this user's historical consumption is cumulative, and accumulated value and the signing consumption of user are compared, if accumulated value meets or exceeds the signing consumption of user, PCRF will be redirected session;
Step 605:PCRF sends Credit Control Answer message Diameter CCA (Credit-Control-Answer) to PCEF, carries the indication information that Redirect Server is corresponding in message;
Step 606:PCEF receives after indication information, according to the redirection list of the indication information of receiving and self storage, obtains the address of Redirect Server, then user conversation is redirected to the server that obtained address is pointed to.
The present embodiment has solved in prior art cannot carry out redirected problem to user conversation based on event information.
For realizing said method, the present invention also provides a kind of redirection device based on strategy and charging control, comprising: setting unit, transmitting element, reception and redirected unit; Wherein,
Described setting unit, for arranging the corresponding relation of redirection list and indication information;
Described transmitting element, need to be redirected user conversation time, sends indication information corresponding to Redirect Server to GW/PCEF for detecting at PCRF;
Described reception and redirected unit, receive after described indication information for GW/PCEF, determines the address of Redirect Server according to local redirection list, and user conversation redirected need is redirected to server corresponding to described address.
Here, can be PCC rule authorization failure when described need to being redirected user conversation time, can be also while meeting certain default trigger condition, can also be while meeting certain pre-conditioned generation appointment trigger event; Described PCRF sends indication information corresponding to Redirect Server to GW/PCEF: described indication information is carried on and in re-authentication authorization request message Diameter RAR, sends or described indication information is carried in Credit Control Answer message Diameter CCA and is sent.
Here, redirection list is generally positioned on GW/PCEF.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention, all any amendments of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. the reorientation method based on strategy and charging control, is characterized in that, the corresponding relation of redirection list and indication information is set; The method also comprises:
Strategy and charging regulation function entity PCRF detect need to be redirected user conversation time, send the indication information that Redirect Server is corresponding to gateway GW/ strategy with charging execution function entity PCEF;
GW/PCEF receives after described indication information, determines the address of Redirect Server according to local redirection list, and user conversation redirected need is redirected to server corresponding to described address;
Described indication information is the index value in redirection list or generates or directly set according to index value;
Described need to comprising the redirected situation of user conversation: PCC rule authorization failure, satisfied default trigger condition.
2. reorientation method according to claim 1, is characterized in that, described redirection list is arranged at GW/PCEF, and described redirection list stores the address of Redirect Server and the corresponding relation of indication information.
3. reorientation method according to claim 1, it is characterized in that, described PCRF sends indication information corresponding to Redirect Server to GW/PCEF and is: described indication information is carried on and in re-authentication authorization request message, sends or described indication information is carried in Credit Control Answer message and is sent.
4. the redirection device based on strategy and charging control, is characterized in that, this device comprises setting unit, transmitting element, reception and redirected unit; Wherein,
Setting unit, for arranging the corresponding relation of redirection list and indication information;
Transmitting element, need to be redirected user conversation time, sends indication information corresponding to Redirect Server to GW/PCEF for detecting at PCRF;
Receive and redirected unit, receive after described indication information for GW/PCEF, determine the address of Redirect Server according to local redirection list, and user conversation redirected need is redirected to server corresponding to described address;
Described indication information is the index value in redirection list or generates or directly set according to index value;
When described need to being redirected user conversation, be: PCC rule authorization failure, satisfied default trigger condition.
5. redirection device according to claim 4, it is characterized in that, described PCRF sends indication information corresponding to Redirect Server to GW/PCEF and is: described indication information is carried on and in re-authentication authorization request message, sends or described indication information is carried in Credit Control Answer message and is sent.
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| CN102811130A (en) | 2011-06-03 | 2012-12-05 | 华为软件技术有限公司 | Redirect method and redirect device under PCC (Policy and Charging Control) |
| CN103503400B (en) * | 2011-11-04 | 2017-04-12 | 华为技术有限公司 | redirection method, device and system |
| CN104363572A (en) * | 2014-11-07 | 2015-02-18 | 华为技术有限公司 | Redirecting method, charging device, access device and redirecting system |
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| CN101296169A (en) * | 2007-04-26 | 2008-10-29 | 华为技术有限公司 | Method, system and equipment for establishing user conversation bearer service |
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| CN1859333A (en) * | 2006-03-24 | 2006-11-08 | 华为技术有限公司 | Method for routing of media resource server |
| CN101296169A (en) * | 2007-04-26 | 2008-10-29 | 华为技术有限公司 | Method, system and equipment for establishing user conversation bearer service |
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Effective date of registration: 20201223 Address after: 215163 8 Jinfeng Road, science and Technology City, Suzhou high tech Zone, Jiangsu Patentee after: Suzhou Medical Device Industry Development Co.,Ltd. Address before: 518057 Ministry of justice, Zhongxing building, South Science and technology road, Nanshan District hi tech Industrial Park, Shenzhen, Guangdong Patentee before: ZTE Corp. |
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Address after: 215163 8 Jinfeng Road, science and Technology City, Suzhou high tech Zone, Jiangsu Patentee after: Suzhou Medical Device Industry Development Group Co.,Ltd. Address before: 215163 8 Jinfeng Road, science and Technology City, Suzhou high tech Zone, Jiangsu Patentee before: Suzhou Medical Device Industry Development Co.,Ltd. |