CN102238690B - Session association method in policy and charging control (PCC) of code division multiple access (CDMA) network - Google Patents
Session association method in policy and charging control (PCC) of code division multiple access (CDMA) network Download PDFInfo
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Abstract
The invention discloses a session association method in policy and charging control (PCC) of a code division multiple access (CDMA) network. The method comprises the following steps that: a strategy execution entity acquires access distinguish information and provides the access distinguish information to a policy and charging rules function (PCRF); the PCRF carries out a gateway control session and association of an IP-CAN session according to the access distinguish information. The PCRF carries out the gateway control session and the association of the IP-CAN session according to the access distinguish information and user identifications. The strategy execution entity is packet data serving node (PDSN) and/or home agent (HA)/ localized mobility anchor (LMA). The access request distinguish information comprises: user IP access type identifications or HA/LMA addresses. By using the invention, session association of different access types of users can be respectively realized in the PCC of the CDMA network and successful access network of user terminals can be guaranteed.
Description
Technical field
The present invention relates to mobile communication technology field, relate in particular to the strategy of cdma network and the session association method in charging control.
Background technology
Growing along with the communication technology, it is day by day complicated that present the run into operating environment of telecom operators is just becoming, such as the various function and contents that provide on network are being enriched constantly, be full of from multi-faceted challenges such as user's experience, the flow increasing sharply, revenue source variations.Operator is just by constantly network being carried out to dilatation, transformation, upgrading, and reply operation is changed, and promotes network operation competitiveness.A kind of important way of network upgrade is in network, to introduce PCC (strategy and charging are controlled, Policy and ChargingControl).Strategy and charging control PCC are a kind of dynamic resource controlling mechanisms, and distribution according to need is accomplished in the instructions for use that can commence business to Internet resources according to user, does not need just to discharge immediately.Can effectively avoid like this Internet resources occupation of land follwed by nonuse of it or utilize not, thereby cause resource to distribute the generation of inequality or wasting of resources phenomenon, reach the business experience that can guarantee user, can promote again the service efficiency of Internet resources, be embodied as the object of operation extra earning.
As shown in Figure 1, for adopting PMIP (proxy-mobile IP, Proxy Mobile IP) network of agreement is introduced strategy and charging control PCC, according to PCC realization mechanism, when user terminal requests is linked into network, need to be in BBERF (bearing binding and reporting events function, Bearer Binding and EventReport Function) and PCRF ("Policy and Charging Rules Function, Policy and Charging RulesFunction) between, set up gateway control session, and at PCEF (strategy and charge execution function, Policyand Charging Enforcement Function) between, set up IP-CAN session.Meanwhile, for user being attached to commence business after network, implementing correct resource and control, also need gateway control session and IP-CAN session to implement associated, guarantee on BBERF with PCEF on consistency to Client-initiated service implementation control strategy.
3GPP (third generation partner program, 3rd Generation Partnership Project) normal structure has been carried out normalized definition to said process, and the flow process by as shown in Figure 2 realizes:
201, BBERF receives Client-initiated network insertion request, has carried UE (subscriber equipment, User Equipment) sign, PDN (packet data network in described network insertion request, Packet DataNetwork) information such as sign, requiring network is its distributing IP address.
202, BBERF receives after access request, to PCRF, sends Diameter CCR message, asks to set up gateway control session for user.In Diameter CCR request message, carry the information such as UE sign, PDN sign and session association indication.Wherein: PDN sign is linked into specific PDN network for identifying user request; Session association indication does not need to carry out immediately the associated of network control session and IP-CAN session after being used for illustrating that gateway control session is set up, but it is associated to wait for that IP-CAN session establishment completes afterwards execution again.
203, PCRF receives Diameter CCR request, according to information such as user signing contract information, carrier policy, is that strategic decision-making is carried out in user access network request.
204, PCRF is handed down to BBERF with QoS (service quality) rule format by DiameterCCA message by strategic decision-making result, and notice BBERF gateway control session is set up and obtained the authorization.BBERF is implementation strategy accordingly, QoS rule is installed, and sets up gateway control session.
205, BBERF sends PBU (agent binding update, Proxy Binding Update) message to PCEF, for carrying out PMIP registration to PCEF request.This process can be synchronizeed with step 202 generation.In message, carry the information such as UE sign, GRE Key, PDN sign, BBERF address.
206, PCEF is user assignment IP address after receiving PMIP registration request, and sends Diameter CCR message to PCRF, and IP-CAN session is set up in request.In message, carry the information such as UE sign, PDN sign, UE IP address.
207, PCRF carries out strategic decision-making for user, and its decision process and step 203 are consistent.
208, when PCRF is after request is authorized successfully to IP-CAN session establishment, gateway control session is identified to (step 203 receives respectively with step 206) with IP-CAN session according to UE sign and PDN and carry out associated.
209, PCRF sends Diameter CCA message to PCEF, authorizes and sets up IP-CAN session, strategy is handed down to PCEF with the form of PCC rule simultaneously.PCEF implementation strategy, installs PCC rule.
210, PCEF returns to PBA (agent binding response, Proxy BindingAcknowledge) message to BBERF, and notice BBERF PMIP succeeds in registration.In message, carry the information such as UE sign, GRE Key, UE IP address.
211, between BBERF and PCEF, set up PMIP tunnel.
212, BBERF returns to access network to user and successfully responds, and the IP address that is its distribution by PCEF returns to user terminal.
The above-mentioned user shown in Fig. 2, ask in the process of accessing group data network, need user terminal that the information such as UE sign, PDN sign are provided to network.UE sign is for identifying user identity, and PDN sign is used for the PDN network that identifying subscriber terminal need to access.Network need to be designated user terminal distributing IP address according to UE, in order to guarantee on BBERF and PCEF, customer service to be implemented the consistency of control strategy, the gateway control session that need to PDN sign, PCRF be authorized according to UE sign is carried out correct associated with IP-CAN session simultaneously.
The PCC mechanism of 3GPP definition is also applied in CDMA (code division multiple access access, Code DivisionMultiple Access) network.Yet there is difference in cdma network and 3GPP network on realization mechanism.
When user's request is linked into cdma network, user terminal can not provide PDN sign to network, and be to provide UE sign, (with NAI, represents, for example usemame domain, wherein " usemame " for identifying user, and " domain " thinks the PDN network of access for identifying user).The definition to terminal capability according to CDMA standard simultaneously, user terminal can be supported IPv4 ability or IPv6 ability or support IPv4 and IPv6 ability simultaneously.
If when possessing the user terminal of IPv4 and IPv6 ability and utilize these two abilities to initiate network insertion request simultaneously, network can be set up respectively PMIP for these two access requests and connect.As shown in Figure 3, Figure 4, provided respectively the application scenarios that a kind of PMIP of foundation connects, wherein, each PMIP connects a corresponding gateway control session and an IP-CAN session.
Summary of the invention
Technical problem to be solved by this invention is, a kind of strategy of cdma network and the session association method in charging control are provided, for solving, by the existing user of cdma network, access realization mechanism, "Policy and Charging Rules Function PCRF cannot carry out for user's access the problem of session association, realization realizes respectively the object of session association in the strategy of cdma network and charging control PCC for user's different access styles, guarantee that user terminal can successful access network.
In order to address the above problem, the present invention proposes a kind of strategy of cdma network and the session association method in charging control PCC, comprising:
Policy execution entity is obtained access differentiation information, and access differentiation information is provided to "Policy and Charging Rules Function PCRF, by PCRF, according to access differentiation information, carries out the associated of gateway control session and IP-CAN session.
Described "Policy and Charging Rules Function PCRF carries out the associated of gateway control session and IP-CAN session according to access differentiation information and user ID.
Described policy execution entity is packet data serving node (PDSN) and/or home agent (HA)/local mobile anchor (LMA).When described policy execution entity reports access differentiation information to PCRF, first the access differentiation information of Code Division Multiple Access (CDMA) network is mapped as to the access information of third generation partner program 3GPP network, then the access after mapping is distinguished to information reporting to the mode of PCRF; Or directly the access of Code Division Multiple Access (CDMA) network is distinguished to information reporting to PCRF.
Described access differentiation information is for distinguishing the information of the dissimilar access request of user, and described access request differentiation information comprises: User IP access style sign, or home agent (HA)/local mobile anchor (LMA) address; Wherein, described access request type comprises: IPv4 access, IPv6 access.
The associated step that described "Policy and Charging Rules Function PCRF carries out gateway control session and IP-CAN session according to access differentiation information and user ID comprises:
"Policy and Charging Rules Function PCRF first sets up gateway control session for each access style, then sets up after IP-CAN session, according to access differentiation information and user ID, sets up the associated of gateway control session and IP-CAN session.
The associated step that described "Policy and Charging Rules Function PCRF carries out gateway control session and IP-CAN session according to access differentiation information and user ID comprises:
"Policy and Charging Rules Function PCRF first sets up a common gateway control session for each access style, then sets up after IP-CAN session for each access style, according to access differentiation information and user ID, sets up the associated of gateway control session and IP-CAN session.
The associated step that described "Policy and Charging Rules Function PCRF carries out gateway control session and IP-CAN session according to access differentiation information and user ID comprises:
"Policy and Charging Rules Function PCRF first sets up a common gateway control session and sets up after a common IP-CAN session for each access style, according to user ID, sets up the associated of gateway control session and IP-CAN session again.
Session association method of the present invention, when the user terminal that possesses many IP ability is initiated a plurality of network insertion request, if there is a plurality of gateway control session and IP-CAN session, can guarantee the correct association of session.For example, in cdma network, when a kind of terminal request that simultaneously possesses IPv4 and IPv6 ability is connected to network, by PCC mechanism, utilize user ID and access differentiation information to carry out gateway control session and IP-CAN session association, can realize the IP message of route between terminal and outer data network is carried out to correct QoS and charging control.
Accompanying drawing explanation
Fig. 1 is the PCC session association schematic diagram of prior art;
Fig. 2 is 3GPP PCC session association realization flow figure;
Fig. 3 is scene 1 schematic diagram of the user terminal access identical network of many IP access style;
Fig. 4 is scene 2 schematic diagrames of the user terminal access identical network of many IP access style;
Fig. 5 carries out the flow chart of session association according to the IP access style of user terminal in embodiment mono-;
Fig. 6 carries out the flow chart of session association according to HA address in embodiment bis-;
Fig. 7 is that in embodiment tri-, different access styles share the flow chart that gateway control session is carried out session association.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is described in further detail, so that those skilled in the art can better understand the present invention also, can be implemented, but illustrated embodiment is not as a limitation of the invention.
PCC mechanism in existing 3GPP adopts UE sign as differentiation information, to carry out the associated of gateway control session and IP-CAN session with PDN sign, and PCC mechanism is while being applied to cdma network, because there is difference in cdma network and 3GPP network on realization mechanism, when user's request is linked into cdma network, user terminal can not provide PDN sign to network.The definition to terminal capability according to CDMA standard simultaneously, user terminal can be supported IPv4 ability and/or IPv6 ability.If user terminal utilizes these two abilities to initiate network insertion request, network need to be respectively user's IPv4 and IPv6 access request and set up gateway control session and IP-CAN session.The information of now transmitting according to existing network, cannot carry out session differentiation and carry out correct session association.
For the problems referred to above, the present invention proposes gateway control session in a kind of cdma network PCC and the correlating method of IP-CAN session, in order to guarantee that user terminal can successful access network.The core concept of this session association method is as follows:
Policy execution entity is obtained access differentiation information, and access differentiation information is provided to "Policy and Charging Rules Function PCRF, carry out user's access, and gateway control session and IP-CAN session is associated by PCRF according to access differentiation information.
Wherein, described policy execution entity is PDSN (packet data serving node, Packet DataServing Node) and/or HA (Home Agent, home agent)/LMA (Localized MobilityAnchor, local mobile anchor);
Wherein, described access differentiation information is used for distinguishing the different access requests of user (IPv4 access and IPv6 access), and this access differentiation information can user IP access style sign be distinguished; If the HA/LMA access that network is different for the dissimilar access request of user adopts, also can be used HA/LMA address to distinguish.
Policy execution entity is obtained access differentiation information by access network; Such as can obtaining by the modes such as terminal request in embodiment in cdma network.
When described policy execution entity reports access differentiation information to PCRF, can first the access differentiation information of cdma network be mapped as to 3GPP access information (such as APN, PDN connection identifier information etc.) and report again PCRF; Or policy execution entity can also access cdma network differentiation information and directly report PCRF.The information of transmitting between policy execution entity and PCRF is 3GPP definition, and the information that policy execution entity for example, is obtained by access network (cdma network) is CDMA (3GPP2) definition, and both machine-processed differences need mapping.If shone upon, the field of the upper definition of policy execution entity and PCRF can be reused; If do not shone upon, need separately to add field and represent this access differentiation information.
Described PCRF carries out the associated of gateway control session and IP-CAN session according to access differentiation information and user ID.Concrete mode when associated comprises:
A, sets up respectively independent gateway control session for each access style, sets up separately IP-CAN session, then carries out associated with IP-CAN session utilization access differentiation information with user ID to gateway control session corresponding to each access style.
B, is the gateway control session of building together of user terminal, separately for each access style is set up IP-CAN session, utilizes access differentiation information and user ID to carry out gateway control session and IP-CAN session association;
C, for user terminal build together a gateway control session and the IP-CAN session of building together, utilizes user ID to carry out associated to gateway control session with IP-CAN session.
When the user terminal that possesses many IP ability is initiated a plurality of network insertion request, exist in the situation of a plurality of gateway control session and IP-CAN session, by this session association method of the present invention, can guarantee the correct association of session.For example, in cdma network, when a kind of terminal request that simultaneously possesses IPv4 and IPv6 ability is connected to network, by PCC mechanism, utilize user ID and access differentiation information to carry out gateway control session and IP-CAN session association, can realize the IP message of route between terminal and outer data network is carried out to correct QoS and charging control.
Embodiment mono-:
In embodiment mono-, adopt the IP access style sign of user terminal to carry out the differentiation of user's access request.This embodiment has provided the user terminal that possesses IPv4 and IPv6 ability and has used these two kinds of abilities to initiate the execution mode of access consolidated network request, and as shown in Figure 5, described policy execution entity is PDSN and HA, and its detailed process is described as follows:
Step 501, PDSN receives the network insertion request from user, carries user ID, access differentiation information use " User IP access style " indicating user employing IPv4 ability access network in message.For example UE sends IPCP configuration request message to PDSN, carries the information such as IP access style that NAI sign (being user ID), IP Configure Option (IP configuration information) indicate UE in message.
Step 503, PCRF is that UE access request is carried out strategic decision-making.
Step 507, HA initiates IP-CAN session 1 to PCRF and sets up the Diameter CCR message of request, carries NAI, User IP access style information, UE IP address information etc. in message.
Step 508, PCRF is that IP-CAN session 1 request of setting up is authorized, and produces PCC rule.The qos policy of this PCC rule description should be consistent with the qos policy rule of step 503.
Step 509, PCRF sets up the identical User IP access style comprising in request and the request of IP-CAN session establishment according to gateway control session, know that user asks IPv4 access, and according to the IPv4 access request that NAI and User IP access style are UE, carry out the associated of gateway control session 1 and IP-CAN session 1.
Step 511, HA returns to PDSN the response that PMIP succeeds in registration, and is that the IP address that UE distributes returns to PDSN by network.
Step 513, PDSN returns to user to UE and accesses successful response, is that the IP address that UE distributes returns to user terminal network simultaneously.
In flow process as shown in Figure 5, step 501 ' to 513 ' being the process that user terminal is used IPv6 access style request access network, this process can be used the process of IPv4 access style request access network to synchronize with terminal to occur.
Step 501 ', PDSN receives the network insertion request from user, carries user ID, User IP access style information indicating user employing IPv6 access network in message;
Step 502 ', PDSN is mapped as 3GPP access information (being for example mapped as PDN-Connection ID) by User IP access style information, and to PCRF, initiate gateway control session 2 and set up the Diameter CCR message of request, in message, carry NAI, User IP access style information and session association indication, illustrate that session association carries out association after being deferred to IP-CAN session establishment;
Step 503 ', PCRF is that UE access request is carried out strategic decision-making;
Step 504 ', PCRF is handed down to PDSN by mandate QoS rule with Diameter CCA message, returns to the response that gateway control session 2 is set up.PDSN carries out QoS rule, sets up gateway control session 2.
Step 505 ', PDSN initiates PMIP registration request PBU message to HA, carries NAI, User IP access style information indication UE request IPv6 access, the information such as GRE Key in message.This step can with step 502 ' synchronously carry out.
Step 506 ', HA receives after PMIP registration request, is UE distributing IP v6 address prefix.
Step 507 ', HA initiates IP-CAN session 2 to PCRF and sets up the Diameter CCR message of request, carries NAI, User IP access style information, UE IP address information etc. in message.
Step 508 ', PCRF is that IP-CAN session 2 requests of setting up are authorized, and produces PCC rule.The qos policy of this PCC rule description should with step 503 ' qos policy rule be consistent.
Step 509 ', PCRF sets up the identical User IP access style comprising in request and the request of IP-CAN session establishment according to gateway control session, know that user asks IPv6 access, and according to the IPv6 access request that NAI and User IP access style are UE, carry out the associated of gateway control session 2 and IP-CAN session 2.
Step 510 ', PCRF is handed down to HA by mandate PCC rule by Diameter CCA message.HA carries out PCC rule, sets up IP-CAN session 2.
Step 511 ', HA returns to PDSN the response that PMIP succeeds in registration, and is that the IPv6 address prefix that UE distributes returns to PDSN by network.
Step 512 ', PMIP tunnel 2 is set up in the IPv6 access for UE between PDSN and HA,
Step 513 ', PDSN returns to user to UE and accesses successful response, is that the IPv6 address prefix that UE distributes returns to user terminal network simultaneously.
What the embodiment mono-shown in Fig. 5 provided is that user terminal sends IPv4 and IPv6 access request simultaneously, and two access requests that network is user terminal are selected the application example of identical HA access network.Be that two access requests are set up respectively gateway control session and IP-CAN session and PMIP tunnel simultaneously.PCRF can be for the access request of UE different IP access style, can identify by UE (NAI) and carry out the associated of gateway control session and IP-CAN session with User IP access style (IP-Type) information, also can identify with User IP access style sign and carry out the differentiation in PMIP tunnel by UE simultaneously.
Embodiment bis-
As shown in Figure 6, embodiment bis-describes the UE request process of access network and the description flow process of embodiment mono-are identical.Difference is that IPv4 access request and IPv6 access request that network is respectively UE select different HA access networks.Therefore use HA address to identify and distinguish the different network insertion of UE.Therefore relating on stream gateway control session foundation asks (step 602 and 602 '), IP-CAN session establishment request (step 607 and 607 ') need to transmit HA address information.PCRF can, for the access request of UE different IP access style, carry out the associated of gateway control session and IP-CAN session according to UE sign (NAI) with HA address.Also can identify with HA address and carry out the differentiation in PMIP tunnel by UE simultaneously.
Embodiment tri-:
For another embodiment of the invention, when UE utilizes IPv4 and IPv6 ability to initiate network insertion request, network can be set up a gateway control session and IP-CAN session for the access request of two types.As shown in Figure 7, embodiment tri-sets up respectively PMIP tunnel for IPv4 access and IPv6 access between PDSN and HA.Idiographic flow is described as follows:
Step 701, PDSN receives the network insertion request from user, carries the IP access style indication of user ID, UE and use IPv4 ability access network in message.For example UE sends IPCP configuration request message to PDSN, carries the information such as IP ability that NAI identifies, IP Configure Option indicates UE in message.
Step 702, PDSN initiates to PCRF the Diameter CCR message that gateway control session is set up request, in message, carry NAI, IP-Type indicates UE request IPv4 access and session association indication, illustrates that session association carries out association after being deferred to IP-CAN session establishment.
Step 703, PCRF is that UE access request is carried out strategic decision-making.
Step 704, PCRF is handed down to PDSN by mandate QoS rule with Diameter CCA message, returns to the response that gateway control session is set up.PDSN carries out QoS rule, sets up gateway control session.
Step 705, PDSN initiates PMIP registration request PBU message to HA, carries NAI, IP-Type and indicate UE request IPv4 access, the information such as GRE Key in message.This step can synchronously be carried out with step 702.
Step 708, PCRF is that the request of IP-CAN session establishment is authorized, and produces PCC rule.The qos policy of this PCC rule description should be consistent with the qos policy rule of step 703.
Step 709, the IPv4 access request that PCRF is UE according to NAI, carries out the associated of gateway control session and IP-CAN session.
Step 711, HA returns to PDSN the response that PMIP succeeds in registration, and is that the IP address that UE distributes returns to PDSN by network.
Step 713, PDSN returns to user to UE and accesses successful response, is that the IP address that UE distributes returns to user terminal network simultaneously.
Following steps 701 '-step 713 ' be that user terminal is used IPv6 capability requests access network, this process can be used the process of IPv4 capability requests access network to synchronize with terminal to occur.
Step 701 ' PDSN receives the network insertion request from user, and in message, carry the IP access style indication of user ID, UE and use IPv6 access network.
Step 701a ' PDSN receives request, find identical with step 701 of the NAI that uses, judgement is that user terminal is used different IP access style request access consolidated networks, determine to use gateway control session and the IP-CAN session identical with IPv4 access request for IPv6 access request, to PCRF, initiate the modification request of gateway control session.
Step 702 ', PDSN initiates the DiameterCCR message of the modification request of gateway control session to PCRF, carry NAI in message, and IP-Type indicates UE request IPv6 access.
Step 703 ', PCRF is that strategic decision-making is carried out in gateway control session modification request.
Step 704 ', PCRF is handed down to PDSN by mandate QoS rule with Diameter CCA message, returns to the response that gateway control session is revised.PDSN carries out QoS rule.
Step 705 ', PDSN initiates PMIP registration request PBU message to HA, carries NAI, IP-Type and indicate UE request IPv6 access, the information such as GRE Key in message.This step can with step 702 ' synchronously carry out.
Step 706 ', HA receives after PMIP registration request, is UE distributing IP v6 address prefix.
Step 707 ', HA initiates the Diameter CCR message of IP-CAN session modification request to PCRF, carry NAI, IP-Type and indicate UE request IPv6 access, UE IP address information etc. in message.
Step 708 ', PCRF is that IP-CAN session modification request is authorized, and produces PCC rule.The qos policy of this PCC rule description should with step 703 ' qos policy rule be consistent.
Step 709 ', PCRF is handed down to HA by mandate PCC rule by Diameter CCA message.HA carries out PCC rule.
Step 710 ', HA returns to PDSN the response that PMIP succeeds in registration, and is that the IPv6 address prefix that UE distributes returns to PDSN by network.
Step 711 ', PMIP tunnel 2 is set up in the IPv6 access for UE between PDSN and HA,
Step 712 ', PDSN returns to user to UE and accesses successful response, is that the IPv6 address prefix that UE distributes returns to user terminal network simultaneously.
The process that above-described embodiment is realized is between PDSN and HA, to set up respectively PMIP tunnel for IPv4 access and IPv6 access, also can set up two stacks tunnel and access public for IPv4 access and IPv6.Now between user and network, mutual IPv4 message and IPv6 message can carry out route by two stack PMIP tunnel.
The foregoing is only embodiments of the invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in claim scope of the present invention.
Claims (7)
1. the strategy of cdma network and the session association method in charging control PCC, comprising:
Policy execution entity is obtained access differentiation information, and access differentiation information is provided to "Policy and Charging Rules Function PCRF, by PCRF, according to access differentiation information, carries out the associated of gateway control session and IP-CAN session;
Wherein, described access differentiation information is for distinguishing the information of the dissimilar access request of user, and described access request differentiation information comprises: User IP access style sign, or home agent (HA)/local mobile anchor (LMA) address;
Described access request type comprises: IPv4 access, IPv6 access.
2. session association method as claimed in claim 1, is characterized in that,
Described "Policy and Charging Rules Function PCRF carries out the associated of gateway control session and IP-CAN session according to access differentiation information and user ID.
3. session association method as claimed in claim 1, is characterized in that, described policy execution entity is packet data serving node (PDSN) and/or home agent (HA)/local mobile anchor (LMA).
4. session association method as claimed in claim 1, is characterized in that,
When described policy execution entity reports access differentiation information to PCRF, first the access differentiation information of Code Division Multiple Access (CDMA) network is mapped as to the access information of third generation partner program 3GPP network, then the access after mapping is distinguished to information reporting to the mode of PCRF; Or directly the access of Code Division Multiple Access (CDMA) network is distinguished to information reporting to PCRF.
5. session association method as claimed in claim 1, is characterized in that, the associated step that described "Policy and Charging Rules Function PCRF carries out gateway control session and IP-CAN session according to access differentiation information and user ID comprises:
"Policy and Charging Rules Function PCRF first sets up gateway control session for each access style, then sets up after IP-CAN session, according to access differentiation information and user ID, sets up the associated of gateway control session and IP-CAN session.
6. session association method as claimed in claim 1, is characterized in that, the associated step that described "Policy and Charging Rules Function PCRF carries out gateway control session and IP-CAN session according to access differentiation information and user ID comprises:
"Policy and Charging Rules Function PCRF first sets up a common gateway control session for each access style, then sets up after IP-CAN session for each access style, according to access differentiation information and user ID, sets up the associated of gateway control session and IP-CAN session.
7. session association method as claimed in claim 1, is characterized in that, the associated step that described "Policy and Charging Rules Function PCRF carries out gateway control session and IP-CAN session according to access differentiation information and user ID comprises:
"Policy and Charging Rules Function PCRF first sets up a common gateway control session and sets up after a common IP-CAN session for each access style, according to user ID, sets up the associated of gateway control session and IP-CAN session again.
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| CN101273584A (en) * | 2005-09-29 | 2008-09-24 | 松下电器产业株式会社 | Policy control in the evolved system architecture |
| CN101459951A (en) * | 2008-04-11 | 2009-06-17 | 中兴通讯股份有限公司 | Method and system for bearing binding and event reporting function policy control |
| CN101582777A (en) * | 2008-05-16 | 2009-11-18 | 华为技术有限公司 | Method and device for acquiring policy and charging control rule |
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| CN102238690A (en) | 2011-11-09 |
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