CN101588326B - Method, devcie and system for associating gateway controlled conversation with Gx conversation - Google Patents
Method, devcie and system for associating gateway controlled conversation with Gx conversation Download PDFInfo
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- CN101588326B CN101588326B CN200910107891XA CN200910107891A CN101588326B CN 101588326 B CN101588326 B CN 101588326B CN 200910107891X A CN200910107891X A CN 200910107891XA CN 200910107891 A CN200910107891 A CN 200910107891A CN 101588326 B CN101588326 B CN 101588326B
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Abstract
The embodiment of the invention provides a mthod, a devcie and a system for associating gateway controlled conversation with Gx conversation, the method includes a strategy control and charge management functional entity PCRF for receiving loading and banding a gateway control conversation establishment request sent by an event reporting entity BBERF, the request of establishing gateway control conversation includes APN information of access point name; the PCRF receives an update request of gateway control conversation sent by BBERF, the request includes IP address of user end UE corresponding to the gateway control conversation; the PCRF associates the gateway controlled conversation with Gx conversation according to the APN information and the IP address. The embodiment of the inventionsolves problems of error association of the gateway control conversation with Gx conversation by the PCRF when users establish a plurality of PDN connection, such that the PCRF can associate the gate way controlled conversation with Gx conversation according to the APN information and the IP address, and then the PCRF can provide correct QoS rule to the BBERF, and improve network performance and experience of users.
Description
Technical field
The present invention relates to communication technical field, the method, apparatus and system of particularly a kind of gateway control session and Gx session association.
Background technology
Present communication technical field, when subscriber equipment carries out in the process of service operation at access network, Access Network need carry out PCC (policy and charging control to this subscriber equipment, the strategy and the control of chargeing), third generation partner program (3rd Generation Partnership Project, 3GPP) defined a kind of PCC framework, wherein, PCRF (Policy Control and Charging Rules Function, policy control and charging regulation function entity) and BBERF (Bearer Binding and Event Reporting Function, bearing binding and reporting events entity) between link to each other by the Gxx interface, PCRF dynamically controls BBERF by the Gxx interface, gateway control session between PCRF and the BBERF is used to transmit the Access Network parameter, the BBERF incident, QoS (Quality of Service, service quality) information such as rule, PCRF and PCEF (Policy and Charging Enforcement Function, the strategy and the execution entity that charges) link to each other by the Gx interface, PCRF dynamically controls the PCC rule that PCEF carries out, corresponding to each IP-CAN session, set up corresponding Gx session between PCEF and the PCRF, be used for transmitting between PCEF and the PCRF PCC rule, information such as PCEF incident.
There are a plurality of IP-CAN sessions between PCEF and the BBERF, can set up between corresponding BBERF and the PCRF and can set up a plurality of Gx sessions between a plurality of gateway control session, PCEF and the PCRF, for PCRF can provide correct QoS rule to BBERF, PCRF needs ability with gateway control session and Gx session association, and promptly PCRF need be known the gateway control session of Gx session correspondence.But for many PDN (Packet data network, when packet data network) connecting scene, each UE (User Equipment, subscriber equipment) with APN (Access Point Name, APN) can set up a plurality of PDN between and connect (being the IP-CAN session), at this moment, PCRF possibly can't carry out the related of gateway control session and Gx session, perhaps carry out wrong association, caused the service disconnection of UE.
Summary of the invention
The embodiment of the invention provides the method, apparatus and system of a kind of gateway control session and Gx session association, makes to connect under the scene at many PDN, and PCRF can be with gateway control session and Gx session association.
The method of a kind of gateway control session and Gx session association comprises:
Policy control and charging regulation function entity PCRF receive the gateway control session of bearing binding and reporting events entity B BERF transmission and set up request, and described gateway control session is set up in the request and comprised APN APN information;
PCRF receives the gateway control session update request that BBERF sends, and comprises the IP address of described gateway control session corresponding user terminal UE in the described gateway control session update request;
PCRF is according to the Gx session of described APN information and described gateway control session of described IP address correlation and described gateway control session correspondence;
Also comprise after the gateway control session that PCRF reception BBERF sends is set up request: PCRF need to determine the IP address of UE;
The request of setting up of described gateway control session comprises network access Identifier NAI information, described PCRF need to determine the IP address of UE to comprise: PCRF is according to described APN information and described NAI information searching Gx session and not related gateway control session, when satisfying following at least one condition, PCRF judges the IP address that needs UE:
The quantity of the Gx session that finds is not less than two;
Find not related gateway control session.
A kind of policy control and charging regulation function entity PCRF comprise:
First receiving element, be used to receive the gateway control session foundation request of bearing binding and reporting events entity B BERF transmission, described gateway control session is set up in the request and is comprised APN APN information, receive the gateway control session update request that BBERF sends, comprise the IP address of described gateway control session corresponding user terminal UE in the described gateway control session update request;
Associative cell is used for the Gx session according to described APN information and described gateway control session of described IP address correlation and described gateway control session correspondence;
Determining unit is used to need to determine the IP address of UE;
The described gateway control session request of setting up that described first receiving element receives comprises network access Identifier NAI information, described determining unit also is used for according to described APN information and described NAI information searching Gx session and not related gateway control session, when satisfying following at least one condition, described determining unit need to determine the IP address of UE:
The quantity of the Gx session that finds is not less than two;
Find not related gateway control session.
A kind of bearing binding and reporting events entity B BERF comprise:
Second transmitting element is used for sending gateway control session foundation request to policy control and charging regulation function entity PCRF, and described gateway control session is set up in the request and comprised APN APN information;
Acquiring unit, the IP address that is used to obtain described gateway control session corresponding user terminal UE;
Described second transmitting element, also be used for sending the gateway control session update request to PCRF, the IP address that comprises the UE of described gateway control session correspondence in the described gateway control session update request makes the Gx session of described PCRF according to described APN information and described gateway control session of described IP address correlation and described gateway control session correspondence.
The system of a kind of gateway control session and Gx session association comprises:
Policy control and charging regulation function entity PCRF, bearing binding and reporting events entity B BERF,
Wherein, described PCRF comprises:
First receiving element, be used to receive the gateway control session foundation request of bearing binding and reporting events entity B BERF transmission, described gateway control session is set up in the request and is comprised APN APN information, receive the gateway control session update request that BBERF sends, comprise the IP address of described gateway control session corresponding user terminal UE in the described gateway control session update request;
Associative cell is used for the Gx session according to described APN information and described gateway control session of described IP address correlation and described gateway control session correspondence;
Determining unit is used to need to determine the IP address of UE;
The described gateway control session request of setting up that described first receiving element receives comprises network access Identifier NAI information, described determining unit also is used for according to described APN information and described NAI information searching Gx session and not related gateway control session, when satisfying following at least one condition, described determining unit need to determine the IP address of UE:
The quantity of the Gx session that finds is not less than two;
Find not related gateway control session;
Described BBERF comprises:
Second transmitting element is used for sending gateway control session foundation request to policy control and charging regulation function entity PCRF, and described gateway control session is set up in the request and comprised APN APN information;
Acquiring unit, the IP address that is used to obtain described gateway control session corresponding user terminal UE;
Described second transmitting element, also be used for sending the gateway control session update request to PCRF, the IP address that comprises the UE of described gateway control session correspondence in the described gateway control session update request makes the Gx session of described PCRF according to described APN information and described gateway control session of described IP address correlation and described gateway control session correspondence.
The embodiment of the invention makes to connect under the scene at many PDN that by APN information and IP address correlation gateway control session and Gx session PCRF can be with gateway control session and Gx session association.
Description of drawings
Fig. 1 is a kind of gateway control session that provides of the embodiment of the invention and the method for Gx session association;
Fig. 2 is the another kind of gateway control session that provides of the embodiment of the invention and the method for Gx session association;
Fig. 3 is the another kind of gateway control session that provides of the embodiment of the invention and the method for Gx session association;
Fig. 4 is the another kind of gateway control session that provides of the embodiment of the invention and the method for Gx session association;
Fig. 5 is the another kind of gateway control session that provides of the embodiment of the invention and the method for Gx session association;
Fig. 6 is a kind of policy control and the charging regulation function entity that the embodiment of the invention provides;
Fig. 7 is another kind of policy control and the charging regulation function entity that the embodiment of the invention provides;
Fig. 8 is a kind of bearing binding and the reporting events entity that the embodiment of the invention provides;
Fig. 9 is another kind of bearing binding and the reporting events entity that the embodiment of the invention provides;
Figure 10 is a kind of gateway control session that provides of the embodiment of the invention and the system of Gx session association.
Embodiment
When BBERF sets up in gateway control session, the APN information of UE visit and NAI (the Network Access Identifier of UE are provided, network access Identifier) information is given PCRF, when the Gx session is set up, PCEF also provides the NAI information of the APN information of UE visit and UE to PCRF, and APN information that PCRF just can visit according to UE and the NAI information of UE be got up gateway control session and Gx session association.
When connecting scene for many PDN, can set up a plurality of PDN between each UE and the APN and be connected (IP-CAN session), these PDN connections have identical APN information and NAI information, corresponding a plurality of gateway control session and Gx session, at this moment, PCRF possibly can't carry out gateway control session and Gx session related, perhaps carried out wrong association, thereby caused the service disconnection of UE.For example when UE visits certain APN, two IP-CAN sessions have been set up, BBERF can set up two gateway control session for two IP-CAN sessions, but the two has identical APN and NAI information, and PCRF can't get up two gateway control session with corresponding Gx session association.
As shown in Figure 1, a kind of gateway control session that provides for the embodiment of the invention and the method for Gx session association connect scenes for many PDN, and PCRF carries out the related of gateway control session and Gx session according to APN information and IP address, and described method comprises:
PCRF receives the gateway control session foundation request that BBERF sends, and described gateway control session is set up in the request and comprised APN information;
PCRF receives the gateway control session update request that BBERF sends, and comprises the IP address of the UE of described gateway control session correspondence in the described gateway control session update request;
PCRF is according to the Gx session of described APN information and described gateway control session of described IP address correlation and described gateway control session correspondence.
During concrete the application, the BBERF function is in the 3GPP connecting system, by SGW (Serving Gateway, gateway) realizes its function, (for example 3GPP2, WiMAX, xDSL etc.) realize its function by corresponding IAD in non-3GPP connecting system, when for example CDMA2000 inserts, HSGW (High RatePacket Data Serving Gateway, High Rate Packet Data) gateway) realizes; When WiMAX inserts, realize by AGW (Access Service Network Gateway, access service network gateway).Describe for unified, all appropriate sections adopt non-3GPP IP to insert the IAD that replaces different access technologies among the present invention.
As shown in Figure 2, the another kind of gateway control session that provides for the embodiment of the invention and the method for Gx session association, the embodiment of the invention has provided the user and has inserted under the scene at non-3GPP, when under an APN, setting up a plurality of PDN connections (present embodiment is connected to example with two PDN), switch one of them PDN and be connected to 3GPP and insert the gateway control session under the scene and the correlating method of Gx session, comprising:
Step 200:UE inserts at non-3GPP IP and has set up two PDN under the same APN of side and connect, and is connected 2 for PDN connects 1 with PDN, and corresponding gateway control session is gateway control session 1 and gateway control session 2, and Gx session accordingly is Gx session 1 and Gx session 2;
Step 201: certain moment UE switches to the 3GPP access with one of them PDN connection and promptly inserts by SGW: UE sends PDN connection foundation to SGW and asks, comprise the APN information of PDN connection and the NAI information of UE in the described PDN connection request message, further, PDN connects in the request of foundation can comprise the PDN connection identifier, be used to indicate the PDN connection that needs switch, described PDN connection identifier can be recorded in described PDN and connect PCO (the Protocol Configuration Options that sets up in asking, protocol configuration option) in, for example, indicate switching PDN in the PCO option and connect 1;
Step 202:SGW sends gateway control session and sets up request to PCRF, comprise described APN information and NAI information in the request, need to prove, connecting 1 with switching PDN in the present embodiment is that example describes, and at this moment, UE initiates switching flow, SGW initiates new gateway control session request and realizes described switching, herein, for the ease of distinguishing, the gateway control session that request is set up in this step is a gateway control session 3;
What step 203:PCRF sent gateway control session 3 sets up response message to SGW;
Step 204:SGW sends binding update messages to PGW (Packet data network Gateway, packet data gateway), be used to indicate PGW to carry out PMIPv6 (Proxy Mobile IP, proxy-mobile IP) registration, comprise the described PDN connection identifier in the step 201 in the binding update messages, further, can comprise described PDN connection identifier by the described PCO option that comprises in the binding update messages in the step 201;
Step 205:PGW knows that according to described PDN connection identifier the PDN that needs switch connects (it is that example describes that present embodiment connects 1 with PDN), and then, correspondingly, PGW initiates Gx1 session modification flow process, upgrades the IP-CAN type information;
Step 206:PGW sends the binding response message to SGW, and response message comprises the IP address information that PDN connects the UE in 1;
Step 207:SGW sends the update request of gateway control session 3 to PCRF, comprises the IP address information that PDN connects the UE in 1 in the request;
Step 208:PCRF is according to IP address information and the APN information of the UE that comprises in the described update request, and gateway control session 3 is related with Gx1;
Step 209:PCRF sends the gateway control session response message to SGW, comprises the corresponding QoS rule of PCC rule in the Gx1 session in the message.
Need to prove, on the one hand, PGW need to determine the PDN that handles to connect in the step 205, the described in the present embodiment PDN connection that need handle is the PDN connection that needs switching, PGW knows that according to the PDN connection identifier PDN that needs switch connects, further, PGW also can go out the PDN connection of needs processing and not use the PDN of PDN connection identifier correspondence to connect according to self strategic decision-making; On the other hand, if in the step 201, UE does not connect to indicate in the request of foundation at PDN needs the PDN that switches to connect, then in the step 205, PGW can go out pending PDN according to self strategic decision-making and connect (can connect for switching the PDN connection or rebuliding new PDN), and initiates corresponding Gx session modification flow process.
The corresponding IP address information of PDN connection that SGW will need to switch in the embodiment of the invention sends to PCRF, thereby make that PCRF can be according to described IP address information and APN information with gateway control session and Gx session association, and then make PCRF can provide correct QoS rule to SGW.
For the embodiment of above-mentioned Fig. 2 correspondence, switch to the scene that non-3GPP IP inserts when inserting from 3GPP IP, the processing mode of the flow process of gateway control session and Gx session association and above-mentioned two embodiment is similar; Can also adopt the MIPv4 agreement between 3GPP access in addition, non-3GPP IP access and the PGW, correspondingly, login request message, the binding response message in the step 206 that the binding update messages in the step 204 is replaced with in the MIPv4 agreement replaces with the registration reply message in the MIPv4 agreement.Specific implementation and present embodiment are similar, repeat no more herein.
As shown in Figure 3, the embodiment application scenarios corresponding with Fig. 2 is identical, and the embodiment of the invention provides the method for another kind of gateway control session and Gx session association, comprising:
Step 300:UE inserts at non-3GPP IP and has set up two PDN under the same APN of side and connect, and is connected 2 for PDN connects 1 with PDN, and corresponding gateway control session is gateway control session 1 and gateway control session 2, and Gx session accordingly is Gx session 1 and Gx session 2;
Step 301: certain moment UE switches to the 3GPP access with one of them PDN connection and promptly inserts by SGW: UE sends PDN connection foundation to SGW and asks, comprise the APN information that PDN connects in the described PDN connection request message, type is set up in the NAI information of UE and PDN connection, the PDN connection is set up type for switching in the present embodiment, further, PDN connects in the request of foundation can comprise the PDN connection identifier, be used to indicate the PDN connection that needs switch, described PDN connection identifier can be recorded in described PDN and connect in the PCO option of setting up in asking, for example, indicate switching PDN in the PCO option and connect 1;
Step 302:SGW sends gateway control session and sets up request to PCRF, comprising described APN information, NAI information in the request is connected with PDN and sets up type, need to prove that for the ease of distinguishing, the gateway control session that request is set up in this step is a gateway control session 3;
Step 303: set up type for switching because PDN connects, PCRF is according to APN information and NAI information searching Gx session, find Gx session 1 and Gx session 2, therefore PCRF judges needs the IP address of UE to carry out session association, need to prove, many PDN connect under the scenes, when PCRF according to APN information and NAI information searching during to a plurality of Gx session, PCRF need judge gateway control session 3 should with which Gx session association;
Step 304:PCRF sends gateway control session and sets up response message to SGW, comprise in the response message and get the indication of IP address, the described IP of getting address indication is used to indicate SGW obtains PDN that needs switch and connects the renewal of initiating gateway control session 3 behind the corresponding IP address, and the IP address that the PDN that needs are switched connects correspondence sends to PCRF;
Step 305:SGW sends binding update messages to PGW, is used to indicate PGW to carry out the registration of PMIPv6; Comprise the described PDN connection identifier in the step 301 in the binding update messages, further, can comprise described PDN connection identifier by the described PCO option that comprises in the binding update messages in the step 301;
Step 306:PGW knows that according to described PDN connection identifier the PDN that needs switch connects, and connecting 1 with PDN in the present embodiment is that example describes, and then, correspondingly, PGW initiates Gx1 session modification flow process, upgrades information such as IP-CAN type;
Step 307:PGW sends the binding response message to SGW, and response message includes the IP address information that PDN connects the UE in 1;
Step 308:SGW sends the update request of gateway control session 3 to PCRF, comprises the IP address information that PDN connects the UE in 1 in the request;
IP address information and the APN information of the UE of the PDN connection 1 that comprises in the update request of step 309:PCRF according to gateway control session 3, gateway control session 3 is related with Gx1;
Step 310:PCRF sends the gateway control session response message to SGW, can comprise in the message with the Gx1 session in the corresponding QoS rule of PCC rule.
Need to prove, on the one hand, PGW need to determine the PDN that handles to connect in the step 306, the described in the present embodiment PDN connection that need handle is the PDN connection that needs switching, PGW knows that according to the PDN connection identifier PDN that needs switch connects, further, PGW also can go out the PDN connection of needs processing and not use the PDN of PDN connection identifier correspondence to connect according to self strategic decision-making; On the other hand, if in the step 301, UE does not connect to indicate in the request of foundation at PDN needs the PDN that switches to connect, then in the step 306, PGW can go out pending PDN according to self strategic decision-making and connect (can connect for switching the PDN connection or rebuliding new PDN), and initiates corresponding Gx session modification flow process.
The corresponding IP address information of PDN connection that SGW will need to switch in the embodiment of the invention sends to PCRF, thereby make that PCRF can be according to described IP address information and APN information with gateway control session and Gx session association, and then make PCRF can provide correct QoS rule to SGW.
For the embodiment of above-mentioned Fig. 3 correspondence, switch to the scene that non-3GPP IP inserts when inserting from 3GPP IP, the processing mode of the flow process of gateway control session and Gx session association and above-mentioned two embodiment is similar; Can also adopt the MIPv4 agreement between 3GPP access in addition, non-3GPP IP access and the PGW, correspondingly, login request message, the binding response message in the step 307 that the binding update messages in the step 305 is replaced with in the MIPv4 agreement replaces with the registration reply message in the MIPv4 agreement.Specific implementation and present embodiment are similar, repeat no more herein.
As shown in Figure 4, the method of another kind of gateway control session and Gx session association is provided for the embodiment of the invention, the user sets up a plurality of PDN and connects (present embodiment is connected to example with two PDN) under same APN, SGW has set up between request and the PCRF according to the previous PDN connection of UE and has set up gateway control session 1, and PCRF does not finish the related of gateway control session 1 and Gx session, SGW receives that same UE visits second PDN connection foundation request of same APN, at this moment, described method comprises:
Step 400:SGW has connected between the request of foundation and the PCRF according to the previous PDN of UE and has set up gateway control session 1, and PCRF do not finish the related of gateway control session 1 and Gx session, and this step gateway control session 1 is corresponding to PDN connection 1;
Step 401:SGW receives the PDN connection foundation request that UE sends, comprising the NAI information of APN information that PDN connects, UE and PDN in the described PDN connection request message connects and sets up type, the PDN connection is set up type for initially setting up in the present embodiment, for convenience of description, needing the PDN that sets up to connect note in this step makes PDN and connects 2;
Step 402:SGW sends the foundation of gateway control session 2 and asks to PCRF, comprises APN information, NAI information and PDN that step 401 obtains in the request and connects and set up type;
Step 403: set up type for initially setting up because PDN connects, PCRF is according to APN information that comprises in the described foundation request and the not related as yet gateway control session of NAI information searching, find gateway control session 1, therefore PCRF judges needs the IP address of UE to carry out session association, need to prove, set up type for initially setting up because PDN connects, when having not related gateway control session (one or more), use the IP address of UE to carry out association with regard to needing;
Step 404:PCRF sends the foundation of gateway control session 2 and replys to SGW, comprises indication in replying, and is used to indicate the renewal of initiating gateway control session 2 behind the IP address that SGW obtains UE;
Step 405:SGW sends binding update messages to PGW, is used to indicate PGW to carry out the registration of PMIPv6;
Step 406:PGW initiates the flow process of setting up of Gx session 2, and connects 2 distributing IP address informations for this PDN;
Step 407:PGW sends the binding response message to SGW, and response message includes the IP address information that PDN connects the UE of 2 correspondences;
Step 408:SGW sends the update request of gateway control session 2 to PCRF, comprises the IP address information that described PDN connects the UE of 2 correspondences in the request;
IP address information and APN information that the PDN that comprises in the update request of step 409:PCRF according to described gateway control session 2 connects 2 correspondences realize that gateway control session 2 is related with Gx session 2;
Step 410:PCRF sends the response message of gateway control session 2 to SGW, can comprise in the message with Gx session 2 in the corresponding QoS rule of PCC rule.
For the embodiment of above-mentioned Fig. 4 correspondence, switch to the scene that non-3GPP IP inserts when inserting from 3GPP IP, the processing mode of the flow process of gateway control session and Gx session association and above-mentioned two embodiment is similar; Can also adopt the MIPv4 agreement between 3GPP access in addition, non-3GPP IP access and the PGW, correspondingly, login request message, the binding response message in the step 407 that the binding update messages in the step 405 is replaced with in the MIPv4 agreement replaces with the registration reply message in the MIPv4 agreement.Specific implementation and present embodiment are similar, repeat no more herein.
Need to prove that PGW determines that the PDN connection that needs to handle is according to self tactful newly-built PDN connection in the step 40, and initiates corresponding Gx session modification flow process.
SGW sends to PCRF with the IP address information that the PDN that sets up connects correspondence in the embodiment of the invention, thereby make that PCRF can be according to described IP address information and APN information with gateway control session and Gx session association, and then make PCRF can provide correct QoS rule to SGW.
As shown in Figure 5, the another kind of gateway control session that provides for the embodiment of the invention and the method for Gx session association, many PDN connect when inserting same APN, PCRF does not obtain the PDN connection and sets up under the scene of type, inserting the side initiation PDN connection request of setting up with UE at non-3GPP IP is example, and described method comprises:
Step 500:UE has set up two PDN and has connected under the same APN of 3GPP side, is connected 2 for PDN connects 1 with PDN, and corresponding gateway control session is gateway control session 1 and gateway control session 2, and Gx session accordingly is Gx session 1 and Gx session 2;
Step 501: the PDN that non-3GPP IP inserts reception UE transmission connects the request of foundation, comprises the APN information of PDN connection and the NAI information of UE in the described PDN connection request message, does not comprise the PDN connection and sets up type;
Step 502: non-3GPP IP inserts the transmission gateway control session and sets up request to PCRF, comprises APN information and NAI information that step 501 is obtained in the request, and for the ease of distinguishing, this session is designated as gateway control session 3, and corresponding PDN connection is designated as PDN and connects 3;
Step 503: do not set up type owing to do not comprise the PDN connection in the gateway control session foundation request, PCRF can't obtain the PDN connection and set up type, therefore, PCRF searches Gx session and gateway control session respectively according to APN information and NAI information, need to judge whether the IP address of UE to carry out session association; Need to prove that when satisfying one of following two conditions, PCRF judges in this step needs the IP address of UE to carry out session association:
Condition one: find and be no less than two Gx sessions;
Condition two: have not related gateway control session.
In this step, PCRF finds Gx session 1 and Gx session 2, needs the IP address of UE to carry out session association so PCRF judges.
Step 504:PCRF transmission gateway control session is set up response message and is inserted to non-3GPP IP, comprise in the response message and get the indication of IP address, initiate the renewal of gateway control session 3 behind the IP address that the indication of the described IP of getting address is used to indicate non-3GPP IP access to obtain UE, the IP address that PDN is connected UE in 3 sends to PCRF;
Step 505: non-3GPP IP inserts and sends binding update messages to PGW, is used for the registration of PMIPv6;
Step 506:PGW initiates Gx session 1 modification process, upgrades information such as IP-CAN type;
Need to prove, in the prior art, the PDN connection is set up type and is comprised switching and initially set up two kinds of situations, if in the step 501, the PDN of UE connects in the request of foundation and has comprised the PDN connection identifier that PDN connects by the PCO option, PGW can determine that according to self making a strategic decision the PDN that needs are handled connects according to PDN connection identifier or PGW, and initiate corresponding Gx session modification or set up flow process, indicating switching PDN connection 1 with the PDN connection identifier in this step is that example describes, then PGW initiates Gx session 1 modification process, upgrades information such as IP-CAN type.
Step 507:PGW sends the binding response message and inserts to non-3GPP IP, and response message includes the IP address information that PDN connects the UE in 1;
Step 508: non-3GPP IP inserts the update request of transmission gateway control session 3 to PCRF, comprises the IP address information that PDN connects the UE in 1 in the request;
Step 509:PCRF is according to IP address information and the APN information of the UE that comprises in the update request, and gateway control session 3 is related with Gx session 1;
Step 510:PCRF sends the gateway control session response message and inserts to non-3GPP IP, can comprise in the message with Gx session 1 in the regular corresponding QoS rule of PCC.
Need to prove, the result of decision that present embodiment has only been described PGW is that PDN connects 1 scene of switching, when the result of decision of PGW is that PDN connects 2 and switches or during for initially the setting up of PDN connection, only influence the value that PGW in Gx session of being upgraded in the step 506 and the step 507 issues the concrete IP address that non-3GPP IP inserts, the gateway control session that whole flow process and PCRF are carried out and the correlating method of Gx session do not have influence, are not therefore giving unnecessary details at other scenes herein.
Present embodiment also can be used for UE and initiates the scene that PDN connects the request of foundation in the 3GPP side, and the flow process of flow process and present embodiment is similar; Can also adopt the MIPv4 agreement between 3GPP access, non-3GPP IP access and the PGW, correspondingly, login request message, the binding response message in the step 507 that the binding update messages in the step 505 is replaced with in the MIPv4 agreement replaces with the registration reply message in the MIPv4 agreement.Specific implementation and present embodiment are similar, repeat no more herein.
PCRF inserts from non-3GPP IP and obtains the IP address information that PDN connects correspondence in the embodiment of the invention, thereby make according to described IP address information and APN information gateway control session and Gx session association to be got up, and then make PCRF can provide correct QoS rule to insert to non-3GPP IP.
Embodiment is corresponding with method, and the present invention also provides corresponding device thereof and system embodiment.
As shown in Figure 6, a kind of policy control and charging regulation function entity PCRF for the embodiment of the invention provides comprise first receiving element 601, associative cell 602,
Described first receiving element 601, be used to receive the gateway control session foundation request of bearing binding and reporting events entity B BERF transmission, described gateway control session is set up in the request and is comprised APN APN information, receive the gateway control session update request that BBERF sends, comprise the IP address of described gateway control session corresponding user terminal UE in the described gateway control session update request;
Described associative cell 602 is used for the Gx session according to described APN information and described gateway control session of described IP address correlation and described gateway control session correspondence.
As shown in Figure 7, be the further refinement of Fig. 6, policy control and charging regulation function entity PCRF also comprise determining unit 701, are used to need to determine the IP address of UE.
Further, the described gateway control session request of setting up that described first receiving element 601 receives comprises NAI information, described determining unit 701 also is used for according to described APN information and described NAI information searching Gx session and not related gateway control session, when satisfying following at least one condition, described determining unit 701 need to determine the IP address of UE:
The quantity of the Gx session that finds is not less than two;
Find not related gateway control session.
The described gateway control session request of setting up that described first receiving element 601 receives comprises NAI information and is connected with packet data network PDN and sets up type, described determining unit 701 specifically is used for when type is set up in described PDN connection for switching, according to described APN information and NAI information searching Gx session, if the quantity of the Gx session that finds is not less than two, then described determining unit 701 need to determine the IP address of UE; Or, when connecting, described PDN sets up type when initially setting up, described determining unit 701 is according to described APN information and the not related gateway control session of NAI information searching, if find not related gateway control session, then described determining unit 701 need to determine the IP address of UE.
Policy control and charging regulation function entity also comprise first transmitting element 702, described first transmitting element 702 is used for sending the QoS rule corresponding with described Gx session PCC rule to BBERF after described associative cell 602 is according to the Gx session of described APN information and described gateway control session of described IP address correlation and described gateway control session correspondence.
As shown in Figure 8, a kind of bearing binding and reporting events entity B BERF for the embodiment of the invention provides comprise: second transmitting element 801, and acquiring unit 802,
Described second transmitting element 801 is used for sending gateway control session foundation request to policy control and charging regulation function entity PCRF, and described gateway control session is set up in the request and comprised APN APN information;
Described acquiring unit 802, the IP address that is used to obtain described gateway control session corresponding user terminal UE;
Described second transmitting element 801, be used for sending the gateway control session update request to PCRF, the IP address that comprises the UE of described gateway control session correspondence in the described gateway control session update request makes the Gx session of described PCRF according to described APN information and described gateway control session of described IP address correlation and described gateway control session correspondence.
As shown in Figure 9, be the further refinement of Fig. 8, bearing binding and reporting events entity B BERF also comprise second receiving element 901,
Described second receiving element 901 is used to receive the packet data network PDN connection foundation request that UE sends, and the described connection request of setting up comprises the PDN connection identifier;
Described acquiring unit 802 specifically is used to send binding update messages or login request message to packet data gateway PGW, described binding update messages or login request message comprise described PDN connection identifier, receive binding response message or registration reply message that PGW returns, described binding response message or registration reply message comprise the IP address that PDN that needs handle connects corresponding UE, and the described PDN that needs to handle connects by PGW and determines according to described PDN connection identifier or self decision strategy.
In concrete the application: in the third generation partner program 3GPP system, described BBERF function is realized by gateway SGW; In the non-3 GPP system, described BBERF function is inserted by non-3GPP IP and realizes.
As shown in figure 10, a kind of gateway control session that provides for the embodiment of the invention and the system of Gx session association comprise policy control and charging regulation function entity PCRF1001, bearing binding and reporting events entity B BERF1002,
Described policy control and charging regulation function entity PCRF1001, be used to receive the gateway control session foundation request of bearing binding and reporting events entity B BERF1002 transmission, described gateway control session is set up in the request and is comprised APN APN information, receive the gateway control session update request that BBERF1002 sends, comprise the IP address of described gateway control session corresponding user terminal UE in the described gateway control session update request;
Described BBERF1002, be used for sending gateway control session and set up request to PCRF1001, described gateway control session is set up in the request and is comprised APN information, send the gateway control session update request to PCRF1001, comprise the IP address of the UE of described gateway control session correspondence in the described gateway control session update request;
Described PCRF1001 also is used for the Gx session according to described APN information and described gateway control session of described IP address correlation and described gateway control session correspondence.
The embodiment of the invention provides correlating method, device and the system of a kind of gateway control session and Gx session, solved in the prior art gateway control session and Gx session wrong related or can't close joint conference and caused BBERF to receive wrong QoS rule or can't set up the QoS rule, promptly set up wrong carrying or can't set up professional carrying, thereby cause user's problems such as service disconnection in wireless side.When the embodiment of the invention has solved many PDN and has been connected to same APN, PCRF can be wrong related or can't associated gateway control session and the problem of Gx session, make that PCRF can be according to described IP address information and APN information with gateway control session and Gx session association, and then make PCRF can provide correct QoS rule to BBERF, improve network performance, improved user's experience.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in the computer read/write memory medium.Described storage medium, as: ROM/RAM, magnetic disc, CD etc.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (13)
1. the method for gateway control session and Gx session association is characterized in that, comprising:
Policy control and charging regulation function entity PCRF receive the gateway control session of bearing binding and reporting events entity B BERF transmission and set up request, and described gateway control session is set up in the request and comprised APN APN information;
PCRF receives the gateway control session update request that BBERF sends, and comprises the IP address of described gateway control session corresponding user terminal UE in the described gateway control session update request;
PCRF is according to the Gx session of described APN information and described gateway control session of described IP address correlation and described gateway control session correspondence;
Also comprise after the gateway control session that PCRF reception BBERF sends is set up request: PCRF need to determine the IP address of UE;
The request of setting up of described gateway control session comprises network access Identifier NAI information, described PCRF need to determine the IP address of UE to comprise: PCRF is according to described APN information and described NAI information searching Gx session and not related gateway control session, when satisfying following at least one condition, PCRF judges the IP address that needs UE:
The quantity of the Gx session that finds is not less than two;
Find not related gateway control session.
2. the method for claim 1 is characterized in that, the request of setting up of described gateway control session comprises network access Identifier NAI information and is connected with packet data network PDN and sets up type, and described PCRF need to determine the IP address of UE to comprise:
When type was set up in described PDN connection for switching, PCRF was according to described APN information and NAI information searching Gx session, if the quantity of the Gx session that finds is not less than two, then PCRF judges the IP address that needs UE; Or,
Set up type when initially setting up when described PDN connects, PCRF is according to described APN information and the not related gateway control session of NAI information searching, if find the not gateway control session of association, then the PCRF judgement needs the IP address of UE.
3. the method for claim 1, it is characterized in that, the gateway control session update request that described PCRF receives the BBERF transmission comprises that also BBERF obtains the IP address of the UE of described gateway control session correspondence before, and the IP address that described BBERF obtains the UE of described gateway control session correspondence comprises:
BBERF transmission binding update messages or login request message are to packet data gateway PGW;
PGW determines that according to self decision strategy the PDN that needs are handled connects;
PGW sends binding response message or registration reply message to BBERF, and described binding response message or registration reply message comprise the IP address that PDN that described needs handle connects the UE of correspondence.
4. the method for claim 1 is characterized in that, the gateway control session update request that described PCRF receives the BBERF transmission also comprises before:
BBERF receives the PDN connection foundation request that UE sends, and the described connection request of setting up comprises the PDN connection identifier;
BBERF transmission binding update messages or login request message are to PGW, and described binding update messages or login request message comprise described PDN connection identifier;
PGW determines that according to described PDN connection identifier the PDN that needs are handled connects;
PGW sends binding response message or registration reply message to BBERF, and described binding response message or registration reply message comprise the IP address that PDN that described needs handle connects the UE of correspondence.
5. method as claimed in claim 4 is characterized in that, described PDN connection identifier is recorded among the protocol configuration option PCO.
6. the method for claim 1 is characterized in that, described PCRF also comprises after according to described APN information and described gateway control session of described IP address correlation and Gx session:
PCRF sends the QoS rule corresponding with PCC rule in the described Gx session to BBERF.
7. policy control and charging regulation function entity PCRF is characterized in that, comprise
First receiving element, be used to receive the gateway control session foundation request of bearing binding and reporting events entity B BERF transmission, described gateway control session is set up in the request and is comprised APN APN information, receive the gateway control session update request that BBERF sends, comprise the IP address of described gateway control session corresponding user terminal UE in the described gateway control session update request;
Associative cell is used for the Gx session according to described APN information and described gateway control session of described IP address correlation and described gateway control session correspondence;
Determining unit is used to need to determine the IP address of UE;
The described gateway control session request of setting up that described first receiving element receives comprises network access Identifier NAI information, described determining unit also is used for according to described APN information and described NAI information searching Gx session and not related gateway control session, when satisfying following at least one condition, described determining unit need to determine the IP address of UE:
The quantity of the Gx session that finds is not less than two;
Find not related gateway control session.
8. PCRF as claimed in claim 7, it is characterized in that, the described gateway control session request of setting up that described first receiving element receives comprises NAI information and is connected with packet data network PDN and sets up type, described determining unit specifically is used for when type is set up in described PDN connection for switching, according to described APN information and NAI information searching Gx session, if the quantity of the Gx session that finds is not less than two, then described determining unit need to determine the IP address of UE; Or, when connecting, described PDN sets up type when initially setting up, described determining unit is according to described APN information and the not related gateway control session of NAI information searching, if find not related gateway control session, then described determining unit need to determine the IP address of UE.
9. PCRF as claimed in claim 7 is characterized in that, also comprises first transmitting element,
Described first transmitting element is used for sending the QoS rule corresponding with described Gx session PCC rule to BBERF after described associative cell is according to the Gx session of described APN information and described gateway control session of described IP address correlation and described gateway control session correspondence.
10. bearing binding and reporting events entity B BERF is characterized in that, comprising:
Second transmitting element is used for sending gateway control session foundation request to policy control and charging regulation function entity PCRF, and described gateway control session is set up in the request and comprised APN APN information;
Acquiring unit, the IP address that is used to obtain described gateway control session corresponding user terminal UE;
Described second transmitting element, also be used for sending the gateway control session update request to PCRF, the IP address that comprises the UE of described gateway control session correspondence in the described gateway control session update request makes the Gx session of described PCRF according to described APN information and described gateway control session of described IP address correlation and described gateway control session correspondence.
11. BBERF as claimed in claim 10 is characterized in that, also comprises second receiving element,
Described second receiving element is used to receive the packet data network PDN connection foundation request that UE sends, and the described connection request of setting up comprises the PDN connection identifier;
Described acquiring unit specifically is used to send binding update messages or login request message to packet data gateway PGW, described binding update messages or login request message comprise described PDN connection identifier, receive binding response message or registration reply message that PGW returns, described binding response message or registration reply message comprise the IP address that PDN that needs handle connects corresponding UE, and the described PDN that needs to handle connects by PGW and determines according to described PDN connection identifier or self decision strategy.
12., it is characterized in that in the third generation partner program 3GPP system, described BBERF function is realized by gateway SGW as claim 10 or 11 described BBERF; In the non-3 GPP system, described BBERF function is inserted by non-3GPP IP and realizes.
13. the system of gateway control session and Gx session association is characterized in that, comprising: policy control and charging regulation function entity PCRF, bearing binding and reporting events entity B BERF,
Wherein, described PCRF comprises:
First receiving element, be used to receive the gateway control session foundation request of bearing binding and reporting events entity B BERF transmission, described gateway control session is set up in the request and is comprised APN APN information, receive the gateway control session update request that BBERF sends, comprise the IP address of described gateway control session corresponding user terminal UE in the described gateway control session update request;
Associative cell is used for the Gx session according to described APN information and described gateway control session of described IP address correlation and described gateway control session correspondence;
Determining unit is used to need to determine the IP address of UE;
The described gateway control session request of setting up that described first receiving element receives comprises network access Identifier NAI information, described determining unit also is used for according to described APN information and described NAI information searching Gx session and not related gateway control session, when satisfying following at least one condition, described determining unit need to determine the IP address of UE:
The quantity of the Gx session that finds is not less than two;
Find not related gateway control session;
Described BBERF comprises:
Second transmitting element is used for sending gateway control session foundation request to policy control and charging regulation function entity PCRF, and described gateway control session is set up in the request and comprised APN APN information;
Acquiring unit, the IP address that is used to obtain described gateway control session corresponding user terminal UE;
Described second transmitting element, also be used for sending the gateway control session update request to PCRF, the IP address that comprises the UE of described gateway control session correspondence in the described gateway control session update request makes the Gx session of described PCRF according to described APN information and described gateway control session of described IP address correlation and described gateway control session correspondence.
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| CN102238237B (en) * | 2010-04-20 | 2015-07-22 | 中兴通讯股份有限公司 | Method and system for establishing policy and charging control session |
| EP3276888B1 (en) | 2010-04-29 | 2019-03-06 | Huawei Technologies Co., Ltd. | Method, apparatus, and system for associating sessions |
| CN102396201B (en) * | 2010-05-12 | 2014-03-26 | 华为技术有限公司 | Method and system for traffic offload, and policy and charging rule function entity |
| WO2011110020A1 (en) * | 2010-09-26 | 2011-09-15 | 华为技术有限公司 | Method, system for selecting policy controller and diameter routing agent entity |
| CN102638867B (en) * | 2011-02-14 | 2018-01-02 | 中兴通讯股份有限公司 | The processing method and system of secondary call access control |
| CN102781093B (en) * | 2011-05-09 | 2017-08-25 | 中兴通讯股份有限公司 | The Notification Method and system of a kind of user profile |
| CN103248451B (en) * | 2012-02-09 | 2016-12-07 | 华为技术有限公司 | Service rate control method and system and equipment |
| CN103369502B (en) * | 2012-04-11 | 2018-05-18 | 中兴通讯股份有限公司 | The processing method and network element of a kind of policy control session |
| CN103731812B (en) * | 2012-10-15 | 2017-09-15 | 中国移动通信集团公司 | Session association method, device, gateway, business side access device and server |
| CN106612262B (en) * | 2015-10-27 | 2020-04-28 | 中国电信股份有限公司 | Method, device and system for establishing PCC session |
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