CN101742699A - Method for indicating multiple access - Google Patents

Abstract

The invention provides a method for indicating multiple access. The method comprises the following steps that: if a policy and charging control (PCC) client knows that user equipment (UE) is the multiple access, the PCC client sends a Diameter session message to a policy and charging rule function (PCRF), wherein the message carries an indication that the UE is the multiple access; and the PCRF analyzes the Diameter session message to obtain the indication of the multiple access. The method ensures that the PCRF can execute correct flow, and realize that various service data streams are transmitted on access connections where the service data streams are most suitable to be transmitted.

Description

A kind of method of indicating multiple access

Technical field

The present invention relates to the communications field, in particular to the method for the indication multiple access of a kind of packet data network (Packet Data Network abbreviates PDN as).

Background technology

Third generation partner program (3rd Generation Partnership Project, abbreviate 3GPP as) grouping system (the Evolved Packet System of evolution, abbreviate EPS as) by universal mobile telecommunications system land radio access web (the EvolvedUniversal Terrestrial Radio Access Network of evolution, abbreviate E-UTRAN as), mobile management unit (Mobility Management Entity, abbreviate MME as), gateway (Serving Gateway, S-GW), grouped data network gateway (PacketData Network Gateway, abbreviate P-GW or PDN GW as), home subscriber server (Home Subscriber Server, abbreviate HSS as), authentication and authorization charging (the Authentication of 3GPP, Authorization and Accounting, abbreviate AAA as) server, "Policy and Charging Rules Function (Policy and ChargingRules Function abbreviates PCRF as) entity and other support nodes are formed.

Fig. 1 is the schematic diagram of the system architecture of EPS, and as shown in Figure 1, MME is responsible for the related work of chains of command such as the processing of mobile management, Non-Access Stratum signaling and the contextual management of user's mobile management; S-GW is the accessing gateway equipment that links to each other with E-UTRAN, transmits data between E-UTRAN and P-GW, and is responsible for pending datas such as paging are carried out buffer memory; P-GW then is the borde gateway of EPS and packet data network (Packet Data Network abbreviates PDN as) network, and the access of being responsible for PDN reaches functions such as transmitting data between EPS and PDN; PCRF is the "Policy and Charging Rules Function entity, it is by receiving interface Rx and carrier network agreement (Internet Protocol, abbreviating IP as) business network links to each other, obtain business information, in addition, it links to each other with gateway device in the network by the Gx/Gxa/Gxc interface, be responsible for initiating the foundation of IP carrying, guarantee the service quality (Quality ofService abbreviates QoS as) of business datum, and the control of chargeing.

EPS supports the intercommunication with non-3 GPP system, wherein, passes through the S2a/b/c interface with the intercommunication of non-3 GPP system and realizes that P-GW is as the anchor point between 3GPP and non-3 GPP system.In the system architecture diagram of EPS, non-3 GPP system is divided into the non-3GPP IP access of trusted and trustless non-3GPP IP inserts.The non-3GPP IP of trusted inserts and can directly be connected with P-GW by the S2a interface; Trustless non-3GPP IP inserts packet data gateway (the Evolved Packet DataGateway that needs through evolution, abbreviate ePDG as) link to each other with P-GW, interface between ePDG and P-GW is S2b, S2c provides subscriber equipment (User Equipment, abbreviate UE as) with relevant control and the mobility support of user's face between the P-GW, the mobility management protocol of its support is for supporting the mobile IP v 6 (Moblie IPv6Support forDual Stack Hosts and Routers abbreviates DSMIPv6 as) of two stacks.

In the 3GPP network before EPS, strategy and charge execution function (Policyand Charging Enforcement Function, abbreviating PCEF as) entity is present among the P-GW, as long as exist interface can finish the control of all functions between PCRF and the P-GW, pass through Gx interface (see figure 1) exchange message between PCRF and P-GW.When the interface between P-GW and S-GW during based on PMIPv6, S-GW also has bearing binding and event reporting function (Bearer Binding and Event ReportFunction, abbreviate BBERF as) entity carries out QoS control to business data flow, between S-GW and the PCRF by Gxc interface (see figure 1) exchange message.When inserting by the non-3GPP connecting system of trusted, the also resident BBERF in the trusted non-3 GPP access network Central Shanxi Plain.Pass through Gxa interface (see figure 1) exchange message between trusted non-3 GPP access network pass and the PCRF.When UE roams, the S9 interface is as the interface of ownership place PCRF and visit ground PCRF, provide professional application function (Application Function for UE simultaneously, abbreviate AF as), send to PCRF by Rx interface and to be used to generate strategy and business information that the control of chargeing (Policy and Charging Control abbreviates PCC as) is tactful.In 3GPP, can find corresponding PDN network by APN (Access Point Name abbreviates APN as).Usually UE is called the session of an IP connection Access Network (IP Connectivity Access Network abbreviates IP-CAN as) to a connection of PDN network.

EPS supports UE to insert a PDN, i.e. Multiple Access (multiple access) by a plurality of Access Networks simultaneously.Fig. 2 is the scene graph of multiple access, and as shown in Figure 2, UE under the covering of non-3GPP and 3GPP access, is linked into PDN by non-3GPP IP Access Network and 3GPP Access Network by same P-GW simultaneously.Under this scene, P-GW is that UE distributes an IP address, promptly has only an IP-CAN session between UE and the PDN.P-GW or PCRF send to UE according to the different qualities decision IP traffic of business by which Access Network.When if non-3 GPP access network is WiFi, the business data flow of Http and Ftp just can pass through the WiFi Access Network, and the business data flow of VoIP just can send to UE by 3GPP.PCRF needs and P-GW, and non-3 GPP access network and 3GPP access interaction carry out policy and charging control.

Scene as shown in Figure 2 supposes that UE initially adheres to by the 3GPP Access Network, and the PDN that UE is established to acquiescence APN connects.BBERF among S-GW and the P-GW in this process (adopting the PMIPv6 agreement between the two) and PCEF set up the Diameter session with PCRF respectively and are used to transmit the information of this IP-CAN session being carried out policy and charging control.The connection that is established to this PDN by the trusted non-3 GPP access network again when UE decision is used to transmit that some are new when professional, the BBERF in the trusted non-3 GPP access network Central Shanxi Plain will with PCRF between set up the Diameter session and be used to transmit relevant policy control information.

In the prior art, send when setting up the message of Diameter session when the trusted non-3 GPP access network closes to PCRF, PCRF can think that UE because of the overlay area of inserting from 3GPP moves to the non-3GPP access of trusted overlay area the BBERF reuse adoption process takes place.At this moment, PCRF will all business data flows when inserting by 3GPP switches to by non-3GPP and inserts in the connection of setting up, and promptly PCRF will carry out the gravity treatment flow process of BBERF.

And during for multiple access, the partial service data flow when PCRF will will insert by 3GPP originally according to the characteristic of business and network strategy is moved to by non-3GPP and is inserted in the connection of foundation.The business data flow that transmits in all the other connections that are adapted at inserting by 3GPP still is retained in original connection.

So if will realize multiple access, PCRF need know current BBERF gravity treatment or the multiple access of having taken place.So that PCRF can carry out correct flow process, realize that each business data flow connects transmission in the access of the most suitable its transmission.

Summary of the invention

The present invention aims to provide a kind of connection control method of packet data network and system, "Policy and Charging Rules Function entity, and to solve when the UE multiple access, PCRF can not judge that whether UE is multiple access, and then can't carry out correct flow process.

The invention provides a kind of indicating means of multiple access, comprising:

If policy and charging control PCC client knows when user equipment (UE) is multiple access that described PCC client sends the Diameter conversation message to policy charging rule functional entity PCRF, carries the indication that UE is a multiple access in the described message;

Described PCRF resolves described Diameter conversation message and obtains described multiple access indication.

Said method, wherein, after described PCRF obtained described multiple access indication, described method further comprises: described PCRF issued the multiple access strategy to described PCC client.

Above-mentioned method, wherein, described PCC client is bearing binding and event reporting function BBERF and policy and charging enforcement function entity PCEF, described BBERF resides among the packet data gateway ePDG of trusted non-3 GPP access network pass or gateway S-GW or evolution, and described PCEF resides among the packet data gateway P-GW.

Above-mentioned method, wherein, when being BBERF as if described PCC client, BBERF knows that UE is that multiple access comprises:

UE sends to the packet data gateway ePDG of trusted non-3 GPP access network pass or gateway S-GW or evolution and inserts request message, and described access request message carries the multiple access indication;

Described BBERF knows that according to described multiple access indication described UE is a multiple access.

Further, PCRF also comprises after described PCC client issues the multiple access strategy:

PCEF upgrades according to described multiple access strategy;

The multiple access strategy of the data flow correspondence that described BBERF deletion is had moved and/or the multiple access strategy of the data flow correspondence that installation is moved into.

Further, described PCEF upgrades according to described multiple access strategy and comprises:

PCEF sends IP to PCRF and connects Access Network session modification Indication message;

PCRF returns IP to PCEF and connects Access Network session modification acknowledge message, wherein, carries described multiple access strategy in the IP connection Access Network session modification acknowledge message;

PCEF upgrades according to described multiple access strategy.

Above-mentioned method, wherein, when being PCEF as if described PCC client, PCEF knows that UE is that many network insertions comprise:

UE sends to described P-GW by protocol configuration option PCO with the multiple access indication;

Described P-GW resolves described PCO, obtains the multiple access indication.

Further, after described PCC client issued the multiple access strategy, described method further comprised at described PCRF:

Described PCRF sends message to PCEF, upgrades the multiple access strategy,

Described PCRF sends message to BBERF, the multiple access strategy of the data flow correspondence that deletion is had moved and/or the multiple access strategy of the data flow correspondence that installation is moved into.

Use method of the present invention, make PCRF can carry out correct flow process, realize that each business data flow connects transmission in the access of the most suitable its transmission.

Description of drawings

Fig. 1 is the schematic diagram of the system architecture of EPS;

Fig. 2 is the scene graph of multiple access;

Fig. 3 is the flow chart of embodiment one;

Fig. 4 is the flow chart of embodiment two;

Fig. 5 is the flow chart of embodiment three;

Fig. 6 is the flow chart of embodiment four.

Embodiment

Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.

Embodiment one

What present embodiment was described is to be in the coverage of 3GPP Access Network as UE, and UE initiates initially to adhere to and be established to the IP-CAN session of acquiescence PDN, and by this IP-CAN session access multiple business.After UE moved in two coverages of 3GPP Access Network and trusted non-3 GPP access network, UE set up the flow process of multiple access again by the trusted non-3 GPP access network.When wherein inserting, adopt the PMIPv6 agreement between S-GW and the P-GW, when wherein inserting, adopt the PMIPv6 agreement between trusted non-3 GPP access network pass and the P-GW by the non-3GPP of trusted by 3GPP.In the process that UE connects by the trusted non-3 GPP access network, the multiple access that is connected to that will be set up by the BBERF notice PCRF in the trusted non-3 GPP access network Central Shanxi Plain connects.

Fig. 3 is the flow chart according to the connection control method of the packet data network of the embodiment of the invention one, and as shown in Figure 3, the step of this embodiment is described below,

Step S301, UE send Attach Request message to MME;

Step S302, MME initiates the identifying procedure to UE, exchanges authentication-related information between MME and the HSS as required; Behind the authentication success, MME initiates more new technological process of position, and HSS sends to MME with the subscription data of UE.In verification process, HSS sends to MME with the selection information of P-GW, comprises acquiescence APN.MME selects P-GW according to APN, and MME selects S-GW simultaneously;

Step S303, MME sends default bearing to S-GW and sets up request message, and wherein, this default bearing is set up the IP address that request message carries the P-GW of APN and selection;

Step S304, the S-GW of the resident BBERF of having carry sign NAI (Non-Access Stratum sign), the APN (APN) of UE in " gateway control session is set up indication " message;

Step S305, PCRF formulates PCC rule and Qos rule according to user's subscription data, network strategy, carrying attribute etc., simultaneously, also may formulate the events corresponding trigger, PCRF sends to S-GW by " gateway control session is set up and confirmed " message with QoS rule and event trigger, and S-GW installs QoS rule and event trigger;

Step S306, S-GW sends " agent binding update " request message to P-GW, wherein, should carry NAI, APN in " agent binding update " request message;

Step S306 can be after receiving step S303 message just can send, response that needn't waiting step S305;

Step S307, resident have the P-GW of PCEF to send " indication is set up in the IP-CAN session " message to PCRF, and message carries NAI, APN and P-GW is the UE IP address allocated wherein, to be somebody's turn to do " indication is set up in the IP-CAN session "; PCRF carries out " gateway control session the is set up indication " message among " IP-CAN session foundation indication " message and the step S305 by NAI, APN related, thereby, two message are arrived same IP-CAN session at the associating information of PCRF foundation;

Step S308, PCRF returns " the IP-CAN session is set up and confirmed " message to P-GW, wherein, should " the IP-CAN session is set up and confirmed " message carry corresponding PCC rule and event trigger, and PCEF installs PCC rule and event trigger;

If the IP-CAN session is set up the information of carrying in the Indication message and is caused the QoS rule that variation has taken place among the step S307, PCRF will give information by gateway control and QoS rule new QoS rule will be sent to trusted non-3 GPP access network pass, if change has also taken place in event trigger, new event trigger is provided, and this message can send simultaneously with step S308.BBERF returns acknowledge message after receiving message.

Step S309, P-GW returns " agent binding affirmation " message to S-GW, and wherein, it is the UE IP address allocated that this " agent binding affirmation " message carries P-GW;

Step S310, S-GW returns default bearing to MME and sets up acknowledge message, and wherein, this default bearing is set up the IP address that acknowledge message carries UE;

Step S311, mutual between MME, eNodeB, the UE, set up radio bearer;

Step S312, after radio bearer was set up, MME sent more new bearer request to S-GW, the address information of notice eNodeB etc., S-GW echo reply message.

UE inserts by 3GPP and has set up and being connected of PDN, and connects by this IP.UE visit Http business, the professional and Ftp business of VoIP.PCRF carries out corresponding PCC rule downloading according to the business of UE visit and gives P-GW, and corresponding QoS rule downloading is given S-GW.

UE has taken place to move, and has entered two overlay areas of trusted non-3 GPP access network and 3GPP Access Network.The UE decision initiates to set up multiple access.

Step S313, UE carries out specific non-3GPP access procedure, inserts the trusted non-3 GPP access network;

Step S314 is after UE is linked into the trusted non-3 GPP access network, to HSS/AAA request carrying out EPS access authentication; After HSS/AAA receives the request of EPS access authentication, the UE of the request of sending is authenticated; After HSS/AAA finishes authentication to UE, close to send to the trusted non-3 GPP access network and return P-GW and the signatory APN of UE that in 3GPP inserts, selects, comprise acquiescence APN;

Step S315, after authentication success, the attachment flow of layer 3 is triggered, and the message that UE sends to the trusted IAD is carried Multiple Access indication;

Step S316, resident have the trusted non-3 GPP access network pass of BBERF sending " gateway control session is set up indication " message to PCRF, wherein, carry sign NAI, APN and the Multiple Access indication of UE in " gateway control session is set up indication " message;

Step S317, PCRF is according to Multiple Access indication, and judgements UE is a multiple access, thereby and according to NAI, APN this message and the message in 304 and 307 steps are carried out relatedly, three message are arrived same IP-CAN session at the associating information of PCRF foundation.Further, PCRF formulates PCC rule and QoS rule according to user's subscription data, network strategy, carrying attribute etc. to the business that will move to the IP-CAN session that inserts by non-3GPP, simultaneously, also may formulate the events corresponding trigger; PCRF sends to BBERF by " gateway control session foundation affirmation " message with the QoS rule and the event trigger of these new formulations, and BBERF installs QoS rule and event trigger.Particularly, PCRF carries out PCC rule and QoS rule to Http and Ftp business again, and the QoS rule is sent to BBERF.PCC rule and QoS rule to the VoIP business are constant;

Step S318, the trusted non-3 GPP access network closes to P-GW and sends " agent binding update " request message, wherein, should carry NAI, APN and Multiple Access indication in " agent binding update " request message, step S318 can just can send after receiving step S315 step message, response that needn't waiting step S317;

Step S319, resident have the P-GW of PCEF to adopt the Diameter session of setting up in 307 steps, sends " indication of IP-CAN session modification " message to PCRF, wherein, should " indication of IP-CAN session modification " message carry CoA, HoA, NAI and APN;

Step S320, PCRF returns " affirmation of IP-CAN session modification " message to P-GW, wherein, carries PCC rule and the event trigger formulated in 317 steps in " affirmation of IP-CAN session modification " message, and P-GW upgrades PCC rule and event trigger.PCRF might upgrade the PCC rule once more according to the 319 step information of carrying;

If variation has taken place in the QoS rule that the information of carrying in the IP-CAN session modification Indication message among the step S319 causes formulating in 317 steps, PCRF will give information by gateway control and QoS rule new QoS rule will be sent to trusted non-3 GPP access network pass, if change has also taken place in event trigger, new event trigger is provided, and this message can send simultaneously with step S320.The trusted non-3 GPP access network closes to receive and returns gateway control after the message and the QoS rule provides acknowledge message.

Step S321, P-GW is saved in HSS with the information such as IP address of oneself, registers multiple access in HSS;

Step S322, P-GW close to the trusted non-3 GPP access network and return " agent binding affirmation " message, and wherein, being somebody's turn to do and carrying P-GW in " agent binding affirmation " message is the UE IP address allocated;

Step S323, the trusted non-3 GPP access network closes to UE echo reply message, and wherein, this response message carries the IP address of UE;

Step S324, the PCRF BBERF in S-GW sends gateway control and the QoS rule gives information, and which is deleted moved to the QoS rule that non-3GPP inserts;

Step S325, BBERF delete corresponding QoS rule, return acknowledge message.

By above flow process, PCRF is at carrying out policy and charging control by the IP-CAN session that 3GPP inserts and non-3GPP inserts simultaneously.

In other embodiments, UE at first is in the coverage of 3GPP Access Network, and UE initiates initially to adhere to and be established to the IP-CAN session of acquiescence PDN, and by this IP-CAN session access multiple business.After UE moved in two coverages of 3GPP Access Network and trustless non-3 GPP access network, UE set up the flow process of multiple access again by trustless 3GPP Access Network.BBERF in ePDG sets up to PCRF transmission gateway control session and carries Multiple Access indication in the Indication message.

In other embodiment, UE at first is in the coverage of trusted or trustless non-3 GPP access network, and UE initiates initially to adhere to and be established to the IP-CAN session of acquiescence PDN, and by this IP-CAN session access multiple business.After UE moved in two coverages of 3GPP Access Network and trusted or trustless non-3 GPP access network, UE set up the flow process of multiple access again by the 3GPP Access Network.BBERF in S-GW sets up to PCRF transmission gateway control session and carries Multiple Access indication in the Indication message.

Embodiment two

What present embodiment was described is to be in the coverage of 3GPP Access Network as UE, and UE initiates initially to adhere to and be established to the IP-CAN session of acquiescence PDN, and by this IP-CAN session access multiple business.After UE moved in two coverages of 3GPP Access Network and trusted non-3 GPP access network, UE set up the flow process of multiple access again by the trusted non-3 GPP access network.When wherein inserting, adopt the PMIPv6 agreement between S-GW and the P-GW, when wherein inserting by the non-3GPP of trusted by 3GPP.UE adopts the DSMIPv6 agreement to insert.In the process that UE connects by the trusted non-3 GPP access network, the multiple access that is connected to that will be set up by the BBERF in trusted non-3 GPP access network Central Shanxi Plain notice PCRF connects.

Fig. 4 is the flow chart according to the connection control method of the packet data network of the embodiment of the invention two, and as shown in Figure 6, the step of this connection control method is described below,

Step S401-S412 is consistent with step S301-S312;

Step S413, subscriber equipment inserts trusted non-3 GPP access network network by layer 2, and HSS/AAA carries out the access authentication mandate to UE.In this process, the P-GW address that HSS will select in 3GPP inserts returns to UE;

Step 414, behind the authentication success, the layer 3 of setting up UE and the non-3GPP connecting system of trusted is connected, and connecting system is that UE distributes the Care-of Address CoA of an IP address as UE;

Step 415, resident have the trusted non-3 GPP access network of BBERF to send " gateway control session foundation " request to this PCRF, carries sign NAI and the Multiple Access indication of UE in the message;

Step 416, PCRF judges that according to MultipleAccess indication UE is a multiple access, thereby and according to NAI this message and the message in 404 and 407 steps are carried out relatedly, three message are arrived same IP-CAN session at the associating information that PCRF sets up.Further, PCRF formulates PCC rule and QoS rule according to user's subscription data, network strategy, carrying attribute etc. to the business that will move to the IP-CAN session that inserts by non-3GPP, simultaneously, also may formulate the events corresponding trigger.PCRF sends to BBERF by " gateway control session foundation affirmation " message with the QoS rule and the event trigger of these new formulations, and BBERF installs QoS rule and event trigger.Particularly, PCRF carries out PCC rule and QoS rule to Http and Ftp business again, and the QoS rule is sent to BBERF.PCC rule and QoS rule to the VoIP business are constant;

Step 417 is set up Security Association between UE and the P-GW, and P-GW will return to UE for UE distributes home address IP address as HoA in 3GPP inserts in this process;

Step 418, UE sends " Binding Update " request message to P-GW, carries CoA and HoA in the message;

Step 419, resident have the P-GW of PCEF to send " indication of IP-CAN session modification " message to PCRF, carries CoA, HoA, NAI and APN in the message;

Step 420, PCRF returns " affirmation of IP-CAN session modification " message to P-GW, wherein, carries PCC rule and the event trigger formulated in 415 steps in " affirmation of IP-CAN session modification " message, and P-GW upgrades PCC rule and event trigger.PCRF might upgrade the PCC rule once more according to the 419 step information of carrying;

If variation has taken place in the QoS rule that the information of carrying in the IP-CAN session modification Indication message among the step S419 causes formulating in 415 steps, PCRF will give information by gateway control and QoS rule new QoS rule will be sent to trusted non-3 GPP access network pass, if change has also taken place in event trigger, new event trigger is provided, and this message can send simultaneously with step S420.The trusted non-3 GPP access network closes to receive and returns gateway control after the message and the QoS rule provides acknowledge message;

Step 421, P-GW returns " binding acknowledgement " message to UE.

Step S422, the PCRF BBERF in S-GW sends gateway control and the QoS rule gives information, and which is deleted moved to the QoS rule that non-3GPP inserts;

Step S423, BBERF delete corresponding QoS rule, return acknowledge message.

In other embodiments, UE at first is in the coverage of 3GPP Access Network, and UE initiates initially to adhere to and be established to the IP-CAN session of acquiescence PDN, and by this IP-CAN session access multiple business.After UE moved in two coverages of 3GPP Access Network and trustless non-3 GPP access network, UE set up the flow process of multiple access again by trustless 3GPP Access Network.BBERF in ePDG sets up to PCRF transmission gateway control session and carries Multiple Access indication in the Indication message.

In a further embodiment, UE at first is in the coverage of trusted or trustless non-3 GPP access network, and UE initiates initially to adhere to and be established to the IP-CAN session of acquiescence PDN, and by this IP-CAN session access multiple business.After UE moved in two coverages of 3GPP Access Network and trusted or trustless non-3 GPP access network, UE set up the flow process of multiple access again by the 3GPP Access Network.BBERF in S-GW sets up to PCRF transmission gateway control session and carries Multiple Access indication in the Indication message.

Embodiment three

What present embodiment was described is to be in the coverage of 3GPP Access Network as UE, and UE initiates initially to adhere to and be established to the IP-CAN session of acquiescence PDN, and by this IP-CAN session access multiple business.After UE moved in two coverages of 3GPP Access Network and trusted non-3 GPP access network, UE set up the flow process of multiple access again by the trusted non-3 GPP access network.When wherein inserting, adopt the PMIPv6 agreement between S-GW and the P-GW, when wherein inserting, adopt the PMIPv6 agreement between trusted non-3 GPP access network pass and the P-GW by the non-3GPP of trusted by 3GPP.In the process that UE connects by the trusted non-3 GPP access network, the multiple access that is connected to that will be set up by PCEF notice PCRF connects.

Fig. 5 is the flow chart according to the connection control method of the packet data network of the embodiment of the invention one, and as shown in Figure 5, the step of this embodiment is described below,

Step S501-S512 is consistent with step S301-S312;

UE inserts by 3GPP and has set up and being connected of PDN, and connects UE visit Http business, the professional and Ftp business of VoIP by this IP.PCRF carries out the PCEF that corresponding PCC rule downloading is given P-GW according to the business of UE visit, and corresponding QoS rule downloading is given the BBERF among the S-GW.

UE has taken place to move, and has entered two overlay areas of trusted non-3 GPP access network and 3GPP Access Network.The UE decision initiates to set up multiple access.

Step S513, UE carries out specific non-3GPP access procedure, inserts the trusted non-3 GPP access network;

Step S514 is after UE is linked into the trusted non-3 GPP access network, to HSS/AAA request carrying out EPS access authentication; After HSS/AAA receives the request of EPS access authentication, the UE of the request of sending is authenticated; After HSS/AAA finishes authentication to UE, close to send to the trusted non-3 GPP access network and return P-GW and the signatory APN of UE that in 3GPP inserts, selects, comprise acquiescence APN;

Step S515, after authentication success, the attachment flow of layer 3 is triggered, and UE sends to the trusted IAD and carries Multiple Access indication among the protocol of messages config option PCO (ProtocolConfiguration Options);

Step S516 is a transparent transmission because PCO closes for the trusted non-3 GPP access network, so the trusted non-3 GPP access network closes that to be indifferent to this request be multiple access or switches.Resident have the trusted non-3 GPP access network of BBERF to close send " gateway control session is set up and indicated " message to PCRF, wherein, carries sign NAI and the APN of UE in " gateway control session is set up indication " message;

Step S517, related thereby PCRF carries out this message and the message in 504 and 507 steps according to NAI, APN, the associating information that three message are set up at PCRF is to same IP-CAN session.At this moment, PCRF can't judge that the user is multiple access or switches.PCRF will carry out switching flow, according to user's subscription data, network strategy, carrying attribute etc. original all business be reformulated PCC rule and QoS rule, simultaneously, also may formulate the events corresponding trigger; PCRF sends to BBERF by " gateway control session is set up and confirmed " message with QoS rule and the event trigger of reformulating, and BBERF installs QoS rule and event trigger;

Step S518, the trusted non-3 GPP access network closes to P-GW and sends " agent binding update " request message, wherein, be somebody's turn to do the Multiple Access indication that carries in " agent binding update " request message among NAI, APN and the PCO, step S518 can just can send after receiving step S515 step message, response that needn't waiting step S517;

Step S519, P-GW resolves PCO, obtains the MultipleAccess indication.Resident have the P-GW of PCEF to adopt the Diameter session of setting up in 507 steps, sends " indication of IP-CAN session modification " message to PCRF, wherein, should " indication of IP-CAN session modification " message carry Multiple Access indication;

Step S520, PCRF is set up by multiple access according to the gateway control session of setting up in 516 steps of Multiple Access indication judgement.PCRF will be moved to the IP-CAN session that inserts by non-3GPP according to which business of decision such as user's subscription data, network strategy, carrying attributes, during which business will be retained in and insert by E-URTAN.PCRF inserts the new PCC rule downloading of formulating to PCEF by carrying in " affirmation of IP-CAN session modification " message will move to by non-3GPP, also may comprise event trigger.PCEF upgrades PCC rule and event trigger.Particularly, PCRF sends to PCEF to Http and the professional PCC rule of carrying out of Ftp again.PCC rule to the VoIP business does not need to send;

Step S521, P-GW is saved in HSS with the information such as IP address of oneself, registers multiple access in HSS;

Step S522, P-GW close to the trusted non-3 GPP access network and return " agent binding affirmation " message, and wherein, being somebody's turn to do and carrying P-GW in " agent binding affirmation " message is the UE IP address allocated;

Step S523, the trusted non-3 GPP access network closes to UE echo reply message, and wherein, this response message carries the IP address of UE;

Step S524, because in S517 went on foot, PCRF can't judge that switching still is multiple access, so PCRF will be handed down to the BBERF in the trusted non-3 GPP access network Central Shanxi Plain in the QoS rule of all business data flows in original the access.Now PCRF knows that the user is that institute inserts, so PCRF provides acknowledge message by gateway control and QoS rule, will not move to the QoS redundant rule elimination of the business data flow correspondence of non-3GPP access;

Step S525, BBERF delete corresponding QoS rule, return acknowledge message;

Step S526, the PCRF BBERF in S-GW sends gateway control and the QoS rule gives information, and which is deleted moved to the QoS rule that non-3GPP inserts;

Step S527, BBERF delete corresponding QoS rule, return acknowledge message.

By above flow process, PCRF is at carrying out policy and charging control by the IP-CAN session that 3GPP inserts and non-3GPP inserts simultaneously.

In other embodiments, UE at first is in the coverage of 3GPP Access Network, UE initiates initially to adhere to and be established to the IP-CAN session of acquiescence PDN (during wherein 3GPP inserts and connects, adopt GTP agreement or PMIPv6 agreement between S-GW and the P-GW), and by this IP-CAN session access multiple business.After UE moved in two coverages of 3GPP Access Network and trustless non-3 GPP access network, UE set up the flow process of multiple access again by trustless 3GPP Access Network.Same UE sends to P-GW by PCO with Multiple Access.PCEF in P-GW sends to PCRF and carries Multiple Access indication in the IP-CAN session modification Indication message.

In a further embodiment, UE at first is in the coverage of the non-or trustless 3GPP Access Network of trusted, and UE initiates initially to adhere to and be established to the IP-CAN session of acquiescence PDN, and by this IP-CAN session access multiple business.After UE moved in two coverages of 3GPP Access Network and trusted non-3 GPP access network, UE set up the flow process (during wherein 3GPP inserts and connects, adopting GTP agreement or PMIPv6 agreement between S-GW and the P-GW) of multiple access again by the 3GPP Access Network.Same UE sends to P-GW by PCO with MultipleAccess, and the PCEF in P-GW sends to PCRF and carries Multiple Access indication in the IP-CAN session modification Indication message.

Embodiment four

What present embodiment was described is to be in the coverage of 3GPP Access Network as UE, and UE initiates initially to adhere to and be established to the IP-CAN session of acquiescence PDN, and by this IP-CAN session access multiple business.After UE moved in two coverages of 3GPP Access Network and trusted non-3 GPP access network, UE set up the flow process of multiple access again by the trusted non-3 GPP access network.When wherein inserting, adopt the PMIPv6 agreement between S-GW and the P-GW, when wherein inserting by the non-3GPP of trusted by 3GPP.UE adopts the DSMIPv6 agreement to insert.In the process that UE connects by the trusted non-3 GPP access network, the multiple access that is connected to that will be set up by the notice of the PCEF among P-GW PCRF connects.

Fig. 6 is the flow chart according to the connection control method of the packet data network of the embodiment of the invention two, and as shown in Figure 6, the step of this connection control method is described below,

Step S601-S612 is consistent with step S301-S312;

Step S613, subscriber equipment inserts trusted non-3 GPP access network network by layer 2, and HSS/AAA carries out the access authentication mandate to UE.In this process, the P-GW address that HSS will select in 3GPP inserts returns to UE;

Step S614, behind the authentication success, the layer 3 of setting up UE and the non-3GPP connecting system of trusted is connected, and connecting system is that UE distributes the Care-of Address CoA of an IP address as UE;

Step S615, resident have the trusted non-3 GPP access network of BBERF to send " gateway control session foundation " request to this PCRF, carries the sign NAI of UE in the message;

Step S616, related thereby PCRF carries out this message and the message in 604 and 607 steps according to NAI, the associating information that three message are set up at PCRF is to same IP-CAN session.At this moment, PCRF can't judge that the user is multiple access or switches.PCRF will carry out switching flow, according to user's subscription data, network strategy, carrying attribute etc. original all business be reformulated PCC rule and QoS rule, simultaneously, also may formulate the events corresponding trigger; PCRF sends to BBERF by " gateway control session is set up and confirmed " message with QoS rule and the event trigger of reformulating, and BBERF installs QoS rule and event trigger;

Step S617, set up Security Association between UE and the P-GW, P-GW will be in 3GPP inserts return to UE for UE distributes home address IP address as HoA in this process, and UE sends to P-GW by PCO with Multiple Access indication, and this indication is transparent to intermediate node.P-GW resolves the MultipleAccess indication, judges that S615 is that multiple access is set up;

Step S618, UE sends " Binding Update " request message to P-GW, carries CoA and HoA in the message;

Step S619, resident have the P-GW of PCEF to send " indication of IP-CAN session modification " message to PCRF, carries CoA, HoA, NAI, APN and Multiple Access indication in the message;

Step S620, PCRF is a multiple access according to Multiple Access indication judgement user.PCRF will be moved to the connection that inserts by non-3GPP according to which business of decision such as user's subscription data, network strategy, carrying attributes, during which business will be retained in and insert by E-URTAN.PCRF inserts the new PCC rule downloading of formulating to PCEF by carrying in " affirmation of IP-CAN session modification " message will move to by non-3GPP, also may comprise event trigger.PCEF upgrades PCC rule and event trigger.Particularly, PCRF sends to PCEF to Http and the professional PCC rule of carrying out of Ftp again.PCC rule to the VoIP business does not need to send;

Step S621, P-GW returns " binding acknowledgement " message to UE.

Step S622, because in S517 went on foot, PCRF can't judge that switching still is multiple access, so PCRF will be handed down to the BBERF in the trusted non-3 GPP access network Central Shanxi Plain in the QoS rule of all business data flows in original the access.Now PCRF knows that the user is a multiple access, so PCRF provides acknowledge message by gateway control and QoS rule, will not move to the QoS redundant rule elimination of the business data flow correspondence that non-3GPP inserts;

Step S623, BBERF delete corresponding QoS rule, return acknowledge message;

Step S624, the PCRF BBERF in S-GW sends gateway control and the QoS rule gives information, and which is deleted moved to the QoS rule that non-3GPP inserts;

Step S625, BBERF delete corresponding QoS rule, return acknowledge message.

In other embodiments, UE at first is in the coverage of 3GPP Access Network, UE initiates initially to adhere to and be established to the IP-CAN session of acquiescence PDN (during wherein 3GPP inserts and connects, adopt GTP agreement or PMIPv6 agreement between S-GW and the P-GW), and by this IP-CAN session access multiple business.After UE moved in two coverages of 3GPP Access Network and trustless non-3 GPP access network, UE set up the flow process of multiple access again by trustless 3GPP Access Network.Same UE sends to P-GW by PCO with MultipleAccess.PCEF in P-GW sends to PCRF and carries Multiple Access indication in the IP-CAN session modification Indication message.

In a further embodiment, UE at first is in the coverage of trusted or trustless non-3 GPP access network, and UE initiates initially to adhere to and be established to the IP-CAN session of acquiescence PDN, and by this IP-CAN session access multiple business.After UE moves in two coverages of 3GPP Access Network and trusted or trustless non-3 GPP access network, UE sets up the flow process (during wherein 3GPP inserts and connects, adopting GTP agreement or PMIPv6 agreement between S-GW and the P-GW) of multiple access again by the 3GPP Access Network.Same UE sends to P-GW by PCO with Multiple Access.PCEF in P-GW sends to PCRF and carries Multiple Access indication in the IP-CAN session modification Indication message.。

Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.

The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (8)

1. the indicating means of a multiple access is characterized in that, described method comprises:

If policy and charging control PCC client knows when user equipment (UE) is multiple access that described PCC client sends the Diameter conversation message to policy charging rule functional entity PCRF, carries the indication that UE is a multiple access in the described message;

Described PCRF resolves described Diameter conversation message and obtains described multiple access indication.

2. method according to claim 1 is characterized in that, after described PCRF obtained described multiple access indication, described method further comprised:

Described PCRF issues the multiple access strategy to described PCC client.

3. method according to claim 2, it is characterized in that, described PCC client is bearing binding and event reporting function BBERF and policy and charging enforcement function entity PCEF, described BBERF resides among the packet data gateway ePDG of trusted non-3 GPP access network pass or gateway S-GW or evolution, and described PCEF resides among the packet data gateway P-GW.

4. method according to claim 3, when being BBERF as if described PCC client, BBERF knows that UE is that multiple access comprises:

UE sends to the packet data gateway ePDG of trusted non-3 GPP access network pass or gateway S-GW or evolution and inserts request message, and described access request message carries the multiple access indication;

Described BBERF knows that according to described multiple access indication described UE is a multiple access.

5. method according to claim 4 is characterized in that, described PCRF is after described PCC client issues the multiple access strategy, and described method further comprises:

PCEF upgrades according to described multiple access strategy;

The multiple access strategy of the data flow correspondence that described BBERF deletion is had moved and/or the multiple access strategy of the data flow correspondence that installation is moved into.

6. method according to claim 5 is characterized in that, described PCEF upgrades according to described multiple access strategy and comprises:

PCEF sends IP to PCRF and connects Access Network session modification Indication message;

PCRF returns IP to PCEF and connects Access Network session modification acknowledge message, wherein, carries described multiple access strategy in the IP connection Access Network session modification acknowledge message;

PCEF upgrades according to described multiple access strategy.

7. method according to claim 3 is characterized in that, when being PCEF as if described PCC client, PCEF knows that UE is that many network insertions comprise:

UE sends to described P-GW by protocol configuration option PCO with the multiple access indication;

Described P-GW resolves described PCO, obtains the multiple access indication.

8. method according to claim 7 is characterized in that, after described PCC client issued the multiple access strategy, described method further comprised at described PCRF:

Described PCRF sends message to PCEf, upgrades the multiple access strategy,

Described PCRF sends message to BBERF, the multiple access strategy of the data flow correspondence that deletion is had moved and/or the multiple access strategy of the data flow correspondence that installation is moved into.

Images