CN103379555B

CN103379555B - A kind of communication system, apparatus and method

Info

Publication number: CN103379555B
Application number: CN201210135000.3A
Authority: CN
Inventors: 张娟; 周燕飞; 毕海
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2012-04-28
Filing date: 2012-04-28
Publication date: 2016-05-18
Anticipated expiration: 2032-04-28
Also published as: WO2013159605A1; CN103379555A

Abstract

The invention discloses a kind of communication system, apparatus and method, in order to realize communicating by letter of LGW and PCRF in local network, distribute realizing PCC based on this system, for LIPA or the SIPTO carrying dynamic assignment PCC strategy of UE request, meet different business demands. This system comprises local gateway LGW and strategy and charging rule functions PCRF, also comprises tactful cohesively managed gateway PAMGW; Described PAMGW, for receive the message of described LGW by the first interface being connected with described LGW, be sent to described PCRF by the second interface being connected with PCRF described at least one, and receive the message of described PCRF by described the second interface, and be sent to described LGW by described first interface. The present invention discloses a kind of PCC management system and method.

Description

A kind of communication system, apparatus and method

Technical field

The present invention relates to communication technical field, relate in particular to a kind of communication system, apparatus and method.

Background technology

In local network deployment scenario, user terminal (UE) can be linked into and this by Home eNodeBThe local network of Home eNodeB association, this technology is called local IP access (LocalIPAccess, LIPA).Local network comprises home network, enterprise network etc. UE also can directly access by family base station systemInternet, this technology is called the IP operation shunting (SelectedIPTrafficOffload, SIPTO) of selection.

In 3G (Third Generation) Moblie standardization body (3GPP) the R10 stage, realize UE by family's baseStand and access the LIPA technology of local network, UE is linked into after Home eNodeB, and data are directly passed through local gateway(LocalGateway, LGW) accessing local network, and do not need through core net. From chain of command andUser's face, LGW has realized the part merit of packet data network gateway (PDNGateway, PGW)Can, but because LGW is arranged in local network, not the network entity that is arranged in 3GPP operator,Therefore relative PGW, the function that LGW realizes is relatively simple.

In addition, 3GPP also wishes that in discussion can adopt LIPA framework to realize UE sets up by Home eNodeBThe method that SIPTO connects

At present, agreement is supported PGW and PCRF (PolicyandChargingRulesFunction, strategyAnd charging rule functions) between interface, for be connected to PGW Packet Data Network (PDN) connect,PCRF can dynamically send service quality (QualityofService, QOS) control strategy to PGW.

The attached LIPA framework that Figure 1 shows that the R10 stage, if UE sets up the normal carrying to core netConnect, data surface passage is that UE passes through Uu interface to (evolution) Home eNodeB (H (e) NB), more logicalCross S1-U interface to gateway (ServingGW, SGW), to PGW, pass through PGW through S5 interfaceSGi interface be connected in the network of access. Wherein, H (e) NB is connected to and is moved by S1-MME interfaceMobility management entity (MME), MME is connected to SGW by S11 interface. But, if UE buildsVertical LIPA connects, and data surface passage is (e) NB from UE to H, then by the SGi interface access of LGWLocal network, and do not need the functional entity through core net.

Wherein, LGW can realize the function of part PGW, for example IP address assignment in local networkDeng. The R10 stage is simple in order to realize, and LGW and H (e) NB realizes and (closing on same physical entityIf). But LGW does not support the interface between PCRF and LGW, can not communicate by letter with PCRF.

Therefore local network do not support dynamic strategy control and charging (PolicyControlandCharging,PCC) assigning process, when UE initiates the process of establishing of LIPA dedicated bearer, or initiates LIPA to holdThe processes such as the QoS amendment of carrying all can be refused by network.

The follow-up SIPTO frame of the follow-up evolution architecture of LIPA being discussed and having been accessed by Home eNodeB of 3GPPStructure, as shown in Figure 2, compared to the LIPA framework in R10 stage, the main distinction is LGW and H (e) NBOn different physical entities, realize (setting up separately), between LGW and H (e) NB, be connected by Sxx interface,Business continuance when better supporting that UE moves. Wherein, LGW is connected to SGW by S5 interface,H (e) NB is connected to SGW by S1-U interface, and is connected to mobile management by S1-MME interfaceEntity (MobilityManagementEntity, MME), passes through S11 interface between MME and SGWConnect. Be connected to SGW, H (e) NB at LGW by security gateway (SecurityGW, SeGW)Be connected to SGW and MME through SeGW and (evolution) femto gateway (H (e) NBGW).But, in the LIPA/SIPTO framework of evolution, do not support the interface between PCRF and LGW, still do not haveThere is the dynamic QQS control procedure realizing LIPA/SIPTO carrying, also do not support that LIPA/SIPTO is specialThe foundation of carrying and the QOS amendment to LIPA/SIPTO carrying.

This just means that all business of accessing by LIPA/SIPTO all must adopt identical acquiescence QoS(defaultQoS) value, the QoS of this acquiescence is kept at home subscriber server (Home as CAMEL-Subscription-InformationSubscriberServer, HSS) in, UE is obtained from HSS by MME in the time adhering to, and this is contractedAcquiescence qos value is non-ensured bit rate (nonGBR) carrying, can not ensure the demand of real time business. WithTime, along with the increase of user's request, for example user may need to access by LIPA mode the printing of familyMachine, also may realize by the movie resource storehouse of the notebook of mobile phone access family Online Video of mobile phone etc.If all adopt signing acquiescence qos value obviously can not meet the QoS of business for these business provide serviceDemand.

As can be seen here, along with the development of network application, user adopts LIPA/SIPTO to connect by family's baseStand while initiating different business, need network also can control for these business provide different QoS. First,This just need to realize communicating by letter between LGW and PCRF in local network, then, and further based on LGWRealizing dynamic PCC with communicating by letter of PCRF distributes.

Summary of the invention

The invention provides a kind of communication system, apparatus and method, in order in local network, realize LGW andThe communication of PCRF, distributes realizing PCC based on this system, is LIPA or the SIPTO of UE requestCarrying dynamic assignment PCC strategy, meets different business demands.

The concrete technical scheme that the embodiment of the present invention provides is as follows:

A kind of communication system, comprises local gateway LGW and strategy and charging rule functions PCRF, also bagDraw together tactful cohesively managed gateway PAMGW;

Described PAMGW, for receiving described LGW by the first interface being connected with described LGWMessage, be sent to described PCRF by the second interface being connected with PCRF described at least one, withAnd receive the message of described PCRF by described the second interface, and described in being sent to by described first interfaceLGW。

A kind of communication system, comprises local gateway LGW and strategy and charging rule functions PCRF, also bagDraw together tactful cohesively managed gateway PAMGW and security gateway SeGW;

Described SeGW, for receiving after the message of LGW, according to the interface identifier of default LGWWith the corresponding relation of the interface identifier of the first interface of described PAMGW, determine the LGW that sends messageThe interface identifier of the first interface that interface identifier is corresponding, and the message of receiving is passed through to definite interface identifier pairThe first interface of answering is sent to described PAMGW; And for receiving that described PAMGW connects by firstAfter the message of the PCRF that mouth sends, according to first of the interface identifier of described LGW and described PAMGWThe corresponding relation of the interface identifier of interface, determines and sends connecing of LGW that the described first interface of message is correspondingMouth mark, and the message of receiving is sent to corresponding LGW by definite interface identifier;

Described PAMGW, for receiving described LGW by the first interface being connected with described SeGWMessage, be sent to described PCRF by the second interface being connected with PCRF described at least one, withAnd receive the message of described PCRF by described the second interface, and described in being sent to by described first interfaceSeGW。

A kind of communication means, comprising:

Strategy cohesively managed gateway PAMGW receives the message of LGW by its first interface, and by itThe message of described LGW is sent to PCRF by the second interface, wherein, and described the second interface and at least oneStrategy is connected with charging rule functions PCRF;

Described PAMGW receives the message of described PCRF by described the second interface, and by described firstThe message of described PCRF is sent to described LGW by interface.

A kind of tactful cohesively managed gateway PAMGW, comprising:

The first interface being connected with LGW, for receiving the message of described LGW, and to described LGWSend the message of PCRF;

The second interface being connected with at least one PCRF, for being sent to institute by the message of described LGWState PCRF, and receive the message of described PCRF.

A kind of PCC management system, comprises local gateway LGW and strategy and charging rule functions PCRF,Also comprise tactful cohesively managed gateway PAMGW;

Described PAMGW, for receiving described LGW by the first interface being connected with described LGWPCC allocation request message, be sent to by the second interface being connected with PCRF described at least oneDescribed PCRF, and receive the PCC strategy that carries distribution of described PCRF by described the second interfaceMessage, and be sent to described LGW by described first interface.

One is used PCC management system, comprises local gateway LGW and strategy and charging rule functions PCRF,Also comprise tactful cohesively managed gateway PAMGW and security gateway SeGW;

Described SeGW, for receiving after the PCC allocation request message of LGW, according to default LGWInterface identifier and the corresponding relation of the interface identifier of the first interface of described PAMGW, determine and send PCCThe interface identifier of the first interface that the interface identifier of the LGW of allocation request message is corresponding, and will receivePCC allocation request message is sent to described PAMGW by first interface corresponding to definite interface identifier;And for the PCC that carries distribution receiving the PCRF that described PAMGW sends by first interfaceAfter the message of strategy, according to the interface of the first interface of the interface identifier of described LGW and described PAMGWThe corresponding relation of mark, determines that transmission carries the described first interface pair of the message of the PCC strategy of distributionThe interface identifier of the LGW answering, and the message of the PCC strategy that carries distribution of receiving is passed through to determineInterface identifier is sent to corresponding LGW;

Described PAMGW, for receiving described LGW by the first interface being connected with described SeGWPCC allocation request message, be sent to by the second interface being connected with PCRF described at least oneDescribed PCRF, and receive the PCC strategy that carries distribution of described PCRF by described the second interfaceMessage, and be sent to described SeGW by described first interface.

A kind of PCC management method, comprising:

The PCC that strategy cohesively managed gateway PAMGW receives LGW by its first interface distributes requestMessage, and by its second interface, described PCC allocation request message is sent to PCRF, wherein, described inThe second interface is connected with charging rule functions PCRF with at least one strategy;

Described PAMGW receives the PCC plan that carries distribution of described PCRF by described the second interfaceMessage slightly, and by described first interface, the message of the described PCC strategy that carries distribution is sent toDescribed LGW.

Based on technique scheme, in the embodiment of the present invention, by arranging between LGW and PCRFPAMGW, this PAMGW receives the message of LGW by the first interface being connected with LGW, logicalCross the second interface being connected with at least one PCRF this message is sent to PCRF, and by secondInterface receives the message of PCRF, and by first interface, this message is sent to LGW, thereby makes LGWAnd can carry out Signalling exchange between PCRF, for local network, to provide one to realize LGW and PCRF logicalThe framework of letter.

With the system architecture providing based on this embodiment, realize between LGW and PCRF about PCC strategyThe request process distributing, realizes dynamic PCC and distributes, holding as LIPA or the SIPTO of UE requestCarry dynamic assignment PCC strategy, meet different business demands.

Brief description of the drawings

Fig. 1 is the LIPA configuration diagram in R10 stage in prior art;

Fig. 2 is follow-up evolution LIPA framework in prior art;

Fig. 3 is system architecture schematic diagram in the embodiment of the present invention;

Fig. 4 is PAMGW structural representation in the embodiment of the present invention;

Fig. 5 A is communication means flow chart in the embodiment of the present invention;

Fig. 5 B is PCC management method flow chart in the embodiment of the present invention;

Fig. 6 sets up the flow chart that LIPA/SIPTOPDN connects in the specific embodiment of the invention one;

Fig. 7 is the flow chart of setting up LIPA/SIPTO carrying in the specific embodiment of the invention two;

Fig. 8 is the flow chart that carries out LIPA/SIPTO bearing modification in the specific embodiment of the invention three;

Fig. 9 sets up the flow chart that LIPA/SIPTOPDN connects in the specific embodiment of the invention four;

Figure 10 is the flow chart of setting up LIPA/SIPTO carrying in the specific embodiment of the invention five.

Detailed description of the invention

In order to realize communicating by letter of LGW and PCRF in local network, with by LGW and PCRFCommunication realize dynamic PCC and distribute, be LIPA or the SIPTO carrying dynamic assignment PCC of UE requestStrategy, makes the different business that adopts LIPA/SIPTO to connect adopt different QoS carryings to transmit data,Local network also needs and disposes to be set up interface between the entity (being PCRF) of dynamic PCC framework and is connected.

PCRF is responsible for producing the PCC strategies such as qos policy as policy decision entity.

In grand network, PGW implementation strategy and charge execution function PCEF (PolicyandChargingEnforcementFunction) function, mainly carry out business datum Stream Discovery (as service data Stream Discovery,Business datum Stream Discovery), the function such as QoS mapping, charging. PCRF sends to the PCC strategy of generationPGW。

Different from PGW, LGW has been disposed jointly by family (or enterprise) and operator, general positionIn family (or enterprise) inside. If H (e) NB and LGW close establish, disposed the family of H (e) NBCan there is a LGW simultaneously. Along with the evolution of LIPA framework, after allowing H (e) NB and LGW to set up separately,Same residential building or same enterprise can be used a LGW.

In LIPA framework, do not support the interface between LGW and PCRF at present, between PGW and PCRFCannot communicate by letter, and, the number with respect to PGW in network, the quantity of LGW is huge, even if canPGW is directly connected with PCRF, a large amount of LGW is connected directly to PCRF for PCRF'sImpacting can be very large, manages also very complicated.

Accordingly, the invention provides a kind of communication system, for realizing the communication between LGW and PCRF.

And, further provide a kind of PCC management system for local network based on this communication system,In order to manage the shunting carrying of local network, support to adopt LIPA/SIPTO transmission bearer connection dynamicallyPCC strategy distributes, and the carrying QoS realizing in LIPA/SIPTO system controls.

Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is elaborated.

As shown in Figure 3, the embodiment of the present invention provides a kind of communication system, and this system comprises local gateway(LGW) and PCRF (strategy and charging rule functions), also comprise tactful cohesively managed gateway(PAMGW)。

This PAMGW receives the message of LGW for the first interface by being connected with LGW, pass throughThe second interface being connected with at least one PCRF is sent to PCRF, and receives by the second interfaceThe message of PCRF, and be sent to LGW by first interface.

In this system, PAMGW, as interface, connects respectively LGW and at least one PCRF, forSignalling exchange between PCRF and LGW.

In this system, HeNB can close and be located at Same Physical entity with LGW, also can divide with LGW(shown in Fig. 3, only the logic interfacing for H (e) NB and LGW is not actual to be located at different physical entitiesInterface).

In a specific implementation, PAMGW has at least one first interface, and each first interface connectsA LGW.

This PAMGW specifically for: according to the interface of the interface identifier of default first interface and the second interfaceThe corresponding relation of mark, second interface corresponding to first interface of definite message that receives LGW, by LGWMessage by determine the second interface be sent to PCRF, and according to corresponding relation determine receive PCRFThe first interface corresponding to the second interface of message, the message of PCRF is sent by definite first interfaceTo LGW.

In this implementation, multiple LGW are connected with PCRF by a PAMGW, can reduce withThe quantity of the PAMGW that PCRF is connected.

Wherein, LGW can be connected directly to the first interface of PAMGW.

Simple in order to realize, a LGW synchronization is only connected with a PAMGW. OneLGW can only carry out Signalling exchange by a PAMGW and PCRF.

Preferably, a LGW can be connected with at least two PAMGW, thereby shares PAMGW'sLoad.

Preferably, in the time that a LGW connects multiple PAMGW, carried out the choosing of PAMGW by LGWSelect function.

Wherein, LGW carries out selection function can select to determine PAMGW according to static configuration information, alsoThe Query Result that can return according to network side selects to determine PAMGW.

In a specific implementation, LGW is according to the indication information of pre-configured user terminal and PAMGWThe corresponding relation of mark, determine the PAMGW mark that the indication information of user terminal is corresponding, and to determiningPAMGW identifies corresponding PAMGW and sends message, and it is corresponding to receive definite PAMGW markThe message of PAMGW.

In practical application, this indication information can be APN (AccessPointName, APN),PGW mark etc.

For example, LGW, according to the corresponding relation of pre-configured APN and PAMGW mark, determines userThe PAMGW mark corresponding to APN of terminal request; Or LGW is according to pre-configured user terminalThe corresponding relation of PGW mark and PAMGW mark, determine that the PGW of user terminal requests is correspondingThe mark of PAMGW.

In another specific implementation, LGW receive by name server (DomainNameServer,DNS) the PAMGW address that inquiry is obtained, and to sending out according to the definite PAMGW in PAMGW addressSend message, and receive according to the message of the definite PAMGW in PAMGW address.

Particularly, LGW obtains PAMGW address by the dns server arranging in requester network,The corresponding relation that disposes indication information and PAMGW mark in dns server, LGW sends inquiry pleaseAsk to dns server, in this inquiry request, carry indication information, this indication information can be user terminalAPN, the PGW marks of request etc., dns server is according to carrying in the corresponding relation search request of configurationPAMGW address corresponding to indication information, and the address of this PAMGW is carried in Query ResultReturn to LGW.

Only for giving an example, when specific implementation, the selection function that LGW carries out PAMGW can have multiple hereinMode, can be used for the present invention as long as can reach the object of the PAMGW that determines the current use of LGW.

Wherein, PAMGW is also for passing through the second interface by the same user terminal of first interface reception notBe sent to the message of connection request the PCRF that LGW specifies.

Particularly, specify PCRF by LGW, LGW connects for the difference of same user terminalIdentical PCRF is specified in request, also can be for to refer to for the dissimilar connection request of same user terminalFixed different PCRF. The mark of the PCRF of the appointment of carrying in the message that PAMGW sends according to LGWKnow, the message of LGW is sent to the PCRF of appointment.

In practical application, the message that PAMGW also can send LGW sends to and definite PAMGWThe second interface each PCRF of connecting, PCRF resolves the PCRF that obtains the appointment of carrying in messageMark, while determining the mark that is designated self of PCRF of this appointment, carries out PCC strategy and distributes.

Particularly, the message of LGW is PCC allocation request message, and the message of PCRF is for carrying distributionThe message of PCC strategy. Wherein, the tactful LAN that is used for of PCC that this PCC distributes request and distributesBinding or the amendment of LIPA or SIPTO establishment of connection, carrying in network.

In practical application, as long as two entities have been disposed identical protocol stack, between these two entities, can separateAnalyse message each other, in existing system, PGW and PCRF can resolve message each other, and LGW continuesHeld most of function of PGW, only need in LGW, increase the protocol stack identical with PGW can makeLGW and PCRF can resolve message each other.

In another communication system provided by the invention, also comprise security gateway (SeGW), LGW is through SeGWBe connected to the first interface of PAMGW.

Particularly, SeGW is for receiving after the message of LGW, according to the interface mark of default LGWThe corresponding relation of the interface identifier of knowledge and first interface, the interface identifier correspondence of definite LGW that sends messageThe interface identifier of first interface, and by the message of receiving by definite first interface corresponding to interface identifierBe sent to PAMGW; And for the message receiving the PCRF that PAMGW sends by first interfaceAfter, according to the corresponding relation of the interface identifier of the first interface of the interface identifier of LGW and PAMGW, reallySurely send the interface identifier of the LGW that the first interface of message is corresponding, and by the message of receiving by determiningInterface identifier is sent to corresponding LGW;

PAMGW is for receive the message of LGW by the first interface that is connected with SeGW, by withThe second interface that at least one PCRF is connected is sent to PCRF, and receives PCRF by the second interfaceMessage, and be sent to SeGW by first interface.

In practical application, if disposed security gateway in network, this security gateway belongs to mobile operator netNetwork, does not belong to the node of local network.

Wherein, a LGW can be connected with at least two PAMGW after SeGW. Each PAMGWThe interface identifier difference of first interface.

Based on the system architecture identical with accompanying drawing 3, the embodiment of the present invention also provides a kind of PCC management to beSystem, this PCC management system realize principle and above-mentioned communication system to realize principle identical, specifically can joinSee the description of above-mentioned communication system, repeat part repeat no more, this PCC management system comprise LGW andPCRF, also comprises PAMGW, wherein,

The PCC that PAMGW receives LGW for the first interface by being connected with LGW distributes requestMessage, is sent to PCRF by the second interface being connected with at least one PCRF, and by secondInterface receives the message of the PCC strategy that carries distribution of PCRF, and is sent to by first interface LGW。

Wherein, PAMGW has at least one first interface, and each first interface connects a LGW;

PAMGW specifically for:

According to the corresponding relation of the interface identifier of the interface identifier of default first interface and the second interface, determineReceive second interface corresponding to first interface of PCC allocation request message, PCC allocation request message is logicalCross the second interface and be sent to PCRF, and determine and receive the PCC plan that carries distribution according to this corresponding relationThe first interface corresponding to the second interface of message slightly, passes through the message of the PCC strategy that carries distributionFirst interface is sent to LGW.

Preferably, a LGW is connected with at least two PAMGW;

LGW also for:

Receiving after the PCC allocation request message of user terminal, according to pre-configured user terminalThe corresponding relation of indication information and PAMGW mark, determines the instruction of carrying in PCC allocation request messageThe PAMGW mark that information is corresponding, and identify corresponding PAMGW transmission PCC to definite PAMGWAllocation request message, and receive definite PAMGW and identify carrying that corresponding PAMGW sendsThe message of the PCC strategy distributing;

Or,

Receive by DNS and inquire about the PAMGW address that obtains and to definite according to PAMGW addressPAMGW sends PCC allocation request message, and receives the PAMGW definite according to PAMGW addressThe message of the PCC strategy that carries distribution sending.

Particularly, right for according to the interface identifier of default PCRF mark and the second interface of PAMGWShould be related to, determine the second interface of the mark correspondence of the PCRF of LGW appointment, first interface is receivedThe PCC allocation request message of the different connection requests of same user terminal sends by the second interface of determiningTo the PCRF specifying.

Wherein, tactful local network LIPA or the SIPTO of being used for of PCC that PCC distributes request and distributesThe binding of establishment of connection, carrying or amendment.

Based on the system architecture identical with accompanying drawing 3, the embodiment of the present invention also provides a kind of PCC management to beSystem, also comprises security gateway, the realization of its specific implementation principle and above-mentioned PCC management system in this systemPrinciple is identical, specifically can be referring to the description of above-mentioned PCC management system, and repeat part and repeat no more, wherein,

SeGW is for receiving after the PCC allocation request message of LGW, according to connecing of default LGWThe corresponding relation of the interface identifier of the first interface of mouth mark and PAMGW, determines that transmission PCC distribution pleaseAsk the interface identifier of the first interface that the interface identifier of LGW of message is corresponding, and the PCC receiving is distributedRequest message is sent to PAMGW by first interface corresponding to definite interface identifier; And for receivingAfter the message of PCC strategy that carries distribution of the PCRF sending by first interface to PAMGW,According to the corresponding relation of the interface identifier of the first interface of the interface identifier of LGW and PAMGW, determine and send outSend the interface identifier of the LGW that the first interface of message of the PCC strategy that carries distribution is corresponding, and will receiveTo the message of the PCC strategy that carries distribution be sent to corresponding LGW by definite interface identifier;

The PCC distribution that PAMGW receives LGW for the first interface by being connected with SeGW is askedAsk message, be sent to PCRF by the second interface being connected with at least one PCRF, and by theTwo interfaces receive the message of the PCC strategy that carries distribution of PCRF, and are sent to by first interfaceSeGW。

As shown in Figure 4, in the embodiment of the present invention, also provide a kind of PAMGW, the tool of this PAMGWBody running principle and operation principle identical that relates to PAMGW in said system, specifically can be referring to above-mentioned systemDescription in system, this PAMGW has the first interface 401 being connected with LGW, and with at least oneThe second interface 402 that individual PCRF is connected, wherein,

The first interface being connected with LGW, for receiving the message of LGW, and sends to LGWThe message of PCRF;

The second interface being connected with at least one PCRF, for the message of LGW is sent to PCRF,And the message of reception PCRF.

Wherein, PAMGW comprises multiple first interfaces or multiple the second interface,

Particularly, PAMGW also comprises determining unit 403, for according to the interface of default first interfaceThe corresponding relation of the interface identifier of mark and the second interface, the first interface pair of definite message that receives LGWSecond interface of answering, and determine that according to this corresponding relation the second interface of the message that receives PCRF is correspondingFirst interface.

Wherein, the message of LGW is PCC allocation request message, and the message of PCRF is to carry distributionThe message of PCC strategy. The tactful local network LIPA of being used for of PCC that PCC distributes request and distributesOr binding or the amendment of SIPTO establishment of connection, carrying.

Based on said system framework, as shown in accompanying drawing 5A, in the embodiment of the present invention, also provide a kind of logicalLetter method, the method realize principle and above-mentioned communication system to realize principle identical, specifically can be referring to systemDescription, repeat part repeat no more, the method mainly comprises the following steps:

Step 501:PAMGW receives the message of LGW by its first interface, and second connects by itThe message of LGW is sent to PCRF by mouth, and wherein, the second interface is connected with at least one PCRF;

Step 502:PAMGW receives the message of PCRF by its second interface, and first connects by itThe message of PCRF is sent to LGW by mouth.

Wherein, PAMGW can have at least one first interface (two or more), Mei GeOne interface connects a LGW.

Particularly, in the time of the concrete multiple first interfaces of PAMGW or multiple the second interface, PAMGW basisThe corresponding relation of the interface identifier of the interface identifier of default first interface and the second interface, determines and receivesSecond interface corresponding to first interface of the message of LGW, by determine the second interface by the message of LGWSend to PCRF.

Equally, PAMGW is according to the interface identifier of the interface identifier of default first interface and the second interfaceCorresponding relation, the first interface corresponding to the second interface of definite message that receives PCRF, PAMGW passes throughThe message of PCRF is sent to LGW by definite first interface.

Alternatively, be connected to the first interface of PAMGW PAMGW through SeGW at LGWReceive by its first interface the message that LGW sends via SeGW, wherein, default by SeGW basisThe interface identifier of LGW and the corresponding relation of the interface identifier of first interface, determine and send the LGW of messageThe interface identifier of first interface corresponding to interface identifier, and by the message of receiving by definite interface identifierCorresponding first interface is sent to PAMGW.

Particularly, PAMGW is according to default PCRF mark and the corresponding pass of the interface identifier of the second interfaceBe, determine the second interface of the mark correspondence of the PCRF of LGW appointment, what first interface was received is sameThe message of the different connection requests of user terminal by determine the second interface be sent to LGW specifyPCRF。

Wherein, the message of LGW is PCC allocation request message; The message of PCRF is to carry distributionThe message of PCC strategy. The tactful local network LIPA of being used for of PCC that PCC distributes request and distributesOr binding or the amendment of SIPTO establishment of connection, carrying.

Similarly, based on said system framework, as shown in accompanying drawing 5B, in the embodiment of the present invention, also provideA kind of PCC management method, the method realize principle and above-mentioned PCC management system realize principle phaseWith, specifically can be referring to the description of system, repeat part and repeat no more, the method mainly comprises the following steps:

Step 510:PAMGW receives the PCC allocation request message of LGW by its first interface,And by its second interface, PCC allocation request message is sent to PCRF, wherein, the second interface with at leastA strategy is connected with charging rule functions PCRF.

Step 520:PAMGW receives the PCC strategy that carries distribution of PCRF by its second interfaceMessage, and by its first interface, the message of the PCC strategy that carries distribution is sent to LGW.

Wherein, before PAMGW is sent to PCRF by its second interface by PCC allocation request message,PAMGW is according to the corresponding relation of the interface identifier of the interface identifier of default first interface and the second interface,Determine the second interface corresponding to first interface that receives PCC allocation request message.

Wherein, PAMGW by its first interface disappearing the PCC strategy that carries distribution of PCRFBefore breath is sent to LGW, PAMGW is according to the interface identifier of default first interface and the second interfaceThe corresponding relation of interface identifier, determines that reception carries the second interface pair of the message of the PCC strategy of distributionThe first interface of answering.

Particularly, PAMGW sends via security gateway SeGW by its first interface reception LGWPCC allocation request message, wherein, by SeGW according to the interface identifier of default LGW and first interfaceThe corresponding relation of interface identifier, determine the interface identifier correspondence of the LGW that sends PCC allocation request messageThe interface identifier of first interface, and by the PCC allocation request message of receiving by definite interface identifierCorresponding first interface is sent to PAMGW.

Wherein, PAMGW is the corresponding relation with the interface identifier of the second interface according to default PCRF mark,Determine the second interface of the mark correspondence of the PCRF of LGW appointment, the same user that first interface is receivedThe PCC allocation request message of the different connection requests of terminal is sent to LGW by the second interface of determining and refers toFixed PCRF.

In practical application, between SGW and LGW, can be to use GTP (GPRS Tunnel Protocol) to be connectedConnecing, can be also to use proxy-mobile IP (ProxyMobileIP, PMIP) agreement to be connected. Below logicalCrossing specific embodiment is specifically described respectively both of these case.

The first situation: below in conjunction with using GTP between one～tri-couple of SGW of specific embodiment and LGWSituation about being connected is elaborated.

Specific embodiment one, as shown in Figure 6, sets up LIPA or SIPTO Packet Data Network (PDN)The detailed process connecting is as follows:

Step 601:UE initiates to adhere to PDN connection and sets up message to Mobility Management Entity (MME),MME detects and determines that this adheres to PDN and connects and set up message and belong to LIPA or SPTO and connect the request of foundation.

It is corresponding that the LGW of UE is chosen as LIPA APN (APN) institute by step 602:MMEPacket data network gateway (PDNGW), MME after SGW initiation session process of establishing, SGW toLGW initiation session is set up request.

In prior art, LGW receives after the session establishment request of SGW, point be used in set up LGW withAddress, user's face tunnel and port numbers that H (e) NB connects, and be carried at and in response message, return to SGW,SGW sends to this response message after MME, and the CAMEL-Subscription-Information that MME obtains UE from HSS is backwardUE (NAS layer) sends response message, carries this address, user's face tunnel, port in this response messageNumber and the CAMEL-Subscription-Information of UE, in this CAMEL-Subscription-Information, include the signing acquiescence qos value of different APN, andAnd MME can, by CAMEL-Subscription-Information notice H (e) NB of this address, user's face tunnel, port numbers and UE, makeDirect tunnel between LGW and H (e) NB can be successfully established.

In this specific embodiment, LGW has received after the message from the session establishment request of SGW, increasesStep 603～606.

Step 603:LGW sends PCC by the first interface of PAMGW to PAMGW and distributes requestMessage, and in this PCC allocation request message, carry the international mobile subscriber identity of UEThe APN that (InternationalMobileSubscriberIdentity, IMSI), IP address and request connect.

Step 604:PAMGW receives after the PCC allocation request message of LGW, by PAMGW'sThis PCC allocation request message is sent to PCRF by the second interface.

In PAMGW, be preset with the corresponding of the interface identifier of first interface and the interface identifier of the second interfaceRelation, PAMGW connects according to first of the PCC allocation request message of the definite reception of this corresponding relation LGWThe second interface that mouth is corresponding, sends to PCRF by this PCC allocation request message by the second interface of determining.

Step 605:PCRF is that UE distributes PCC strategy according to the PCC allocation request message receiving, shouldPCC strategy comprises QoS, charging policy (chargingrules), Event triggered (eventtrigger)Deng policy information.

Particularly, PCRF is that UE distributes PCC strategy according to the strategy of configuration, or from application function(ApplicationFunction, AF) obtains application layer message and from signing profile warehouse (SubscriptionProfileRepository, SPR) CAMEL-Subscription-Information that obtains UE is that UE distributes PCC strategy. This area skillIt is multiple that art personnel can know that PCRF is that UE distributes the concrete mode of PCC strategy to have according to existing protocol,Only for for example, be not limited to the present invention herein.

Step 606:PCRF returns to the message of carrying PCC strategy by the second interface of PAMGWPAMGW, then notify LGW by PAMGW.

Particularly, PAMGW is according to the interface identifier of the interface identifier of default first interface and the second interfaceCorresponding relation, determine and receive the first interface corresponding to the second interface of message that carries PCC strategy, willThis message of carrying PCC strategy sends to LGW by definite first interface.

Wherein, LGW receives the message of carrying PCC strategy of returning from PAMGW, preserves that it is entrainedPCC strategy, and the carrying of setting up the QoS in corresponding PCC strategy for UE.

Wherein, LGW also returns to session establishment response message to SGW, and SGW returns to this response messageGive MME, MME returns to response message to UE (the NAS layer of UE), to respond attached that UE initiatesPDN connection and set up message, and set up S1 carrying and empty port load-supporting.

Specific embodiment two, does not support dynamic PCC in existing framework, when UE initiates LIPA or SIPTOWhen request message is set up in carrying, return to refuse information by LGW. In this specific embodiment, at local networkAfter the above-mentioned PCC framework of middle employing, UE supports dynamic PCC, and the different business of initiating for UE, also canTo set up the carrying of different QoS, as shown in Figure 7, for UE sets up the tool of LIPA or SIPTO carryingBody process is as follows:

Step 701:SGW receives after request is set up in the carrying of UE and sends and set up new carrying to LGWRequest message.

Step 702:LGW sends PCC by the first interface of PAMGW to PAMGW and distributes requestMessage, is communicated with to set up new IP access network (IPConnectivityAccessNetwork, IP-CAN)Carrying, carries request PCC policy information, the PCC policy information of this request in this PCC distribution requestComprise the information such as QoS, TFT of request, in this PCC distribution request, also carry to be used to indicate and set up newlyThe indication information of request type of carrying.

Step 703:PAMGW receives by its first interface after the PCC allocation request message of LGW,Be forwarded to PCRF by its second interface.

The PCC allocation request message that step 704:PCRF receives according to the second interface that passes through PAMGW,Obtain application layer message and generate the newly-built carrying of asking from the CAMEL-Subscription-Information that SPR obtains UE from AFPCC strategy, this PCC strategy comprises the strategy such as QoS, chargingrules, eventtrigger letterBreath.

Step 705:PCRF is carried at the PCC strategy of asked newly-built carrying in response message and passes throughThe second interface of PAMGW returns to PAMGW.

Step 706:PAMGW disappears the response of the PCC strategy that carries asked newly-built carrying receivingBreath returns to LGW by its first interface.

Particularly, PAMGW is according to the interface identifier of the interface identifier of default first interface and the second interfaceCorresponding relation, determine and receive the first interface corresponding to the second interface of response message, this response message is logicalCross definite first interface and send to LGW.

In the response message that step 707:LGW preservation receives by the first interface of PAMGW, carryThe PCC strategy of the newly-built carrying of asking, kept away according to this PCC strategy and carried out bearing binding, and toSGW returns to carrying and sets up response message.

Specific embodiment three, in existing R10 framework, local network is not supported the LIPA to having set up yetOr the modification process of SIPTO carrying, if UE initiates bearing modification request, LGW will refuse thisRequest. In this specific embodiment, adopt after above-mentioned PCC framework in local network, UE supports dynamic PCC,The bearing modification process that can realize different QoS, as shown in Figure 8, detailed process is as follows:

Step 801:SGW receives after the bearing modification request message of UE, sends amendment built to LGWThe bearing modification request message of vertical carrying.

Step 802:LGW sends PCC by the first interface of PAMGW to PAMGW and distributes requestMessage, the IP-CAN carrying that request amendment has been set up, this PCC allocation request message carries request amendmentPCC policy information, the PCC policy information of this request amendment comprise request amendment QoS information and/Or the TFT information of request amendment, in practical application, can also include other request amendment in additionPCC policy information, this PCC allocation request message also carries the bearing identification of request amendment.

Step 803:PAMGW sends to the PCC allocation request message of reception by its second interfacePCRF。

The PCC allocation request message that step 804:PCRF receives according to the second interface that passes through PAMGW,Obtain application layer message and generate new PCC strategy from the CAMEL-Subscription-Information that SPR obtains UE from AF, andThis new PCC strategy is carried in response message, by the second interface of PAMGW, this response is disappearedBreath returns to PAMGW, carries new that the carrying of promising request amendment distributes in this new PCC strategyQoS and/or TFT information, in practical application, in addition, new PCC strategy can also comprise promisingOther policy information that the carrying of request amendment distributes.

Step 805:PAMGW returns to LGW by the response message of reception by its first interface.

Step 806:LGW preserves the new PCC strategy carrying in the response message of receiving, new according to thisPCC strategy carry out bearing binding, and return to bearing modification response message to SGW.

The second situation: below in conjunction with using PMIP between four～five couples of SGW of specific embodiment and LGWSituation about being connected is elaborated.

Specific embodiment four, as shown in Figure 9, sets up the detailed process that LIPA or SIPTOPDN connectAs follows:

Step 901:UE initiates to adhere to PDN connection and sets up message to MME, and request MME builds for itVertical LIPA or SPTOAPN connect.

The LIPA of UE or PGW corresponding to SPTOAPN are chosen as LGW by step 902:MME,MME sets up request to SGW initiation session, and SGW receives the session establishment request sending from MMEBe initiated to the PMIP session establishment process of LGW, require to set up the PMIP session between LGW, SGWInitiate gateway control session (GatewayControlSession) process to PCRF simultaneously.

In this specific embodiment, LGW has received after the message from the session establishment request of SGW, increasesStep 903～906.

Step 903:LGW sends PCC by the first interface of PAMGW to PAMGW and distributes requestMessage, and in this PCC allocation request message, carry that the IMSI, IP address of UE and request connectAPN。

Step 904:PAMGW receives after the PCC allocation request message of LGW, by PAMGW'sThis PCC allocation request message is sent to PCRF by the second interface.

Step 905:PCRF is that UE distributes PCC strategy according to the PCC allocation request message receiving, shouldPCC strategy comprises the policy informations such as QoS, chargingrules, eventtrigger.

Particularly, PCRF is that UE distributes PCC strategy according to the strategy of configuration, or obtains and answer from AFBy layer information and be that UE distributes PCC strategy from the CAMEL-Subscription-Information that SPR obtains UE. Art technologyIt is multiple that personnel can know that PCRF is that UE distributes the concrete mode of PCC strategy to have according to existing protocol, thisPlace only, for for example, is not limited to the present invention.

The message of carrying part PCC strategy is returned to SGW by step 906:PCRF, meanwhile, and PCRFThe message of carrying another part PCC strategy is returned to PAMGW by the second interface of PAMGW,Notify LGW by PAMGW.

Particularly, the message of carrying qos policy is returned to SGW by PCRF, will be except qos policyThe strategy such as chargingrules, eventtrigger send to PAMGW.

Wherein, SGW receives that preserving it the message of carrying part qos policy of returning from PCRF carriesPart qos policy, and the carrying of setting up corresponding QoS for UE. LGW receives from PAMGW and returnsThe strategy such as chargingrules, eventtrigger after preserve these policy informations, and return to SGWThe successful message of PMIP session establishment. Wherein, SGW also returns to the success of PMIP session establishment to MMEResponse message, Non-Access Stratum (NAS) request of MME response UE, for it sets up S1 carrying and emptyMouthpiece carries.

Specific embodiment five, as shown in Figure 10, UE initiates to set up new LIPA or SIPTO carryingDetailed process is as follows:

Step 1001:SGW receives that the backward PCRF of carrying foundation request sends request the new QoS's of distributionRequest message.

Step 1002:PCRF is according to the request message received, the application layer message obtaining from AF and fromThe CAMEL-Subscription-Information that SPR obtains is that UE distributes new PCC strategy.

The new qos policy distributing is returned to SGW by step 1003:PCRF, and return to PAMGWBe back to the strategy such as chargingrules, eventtrigger of the IP-CAN that upgrades UE.

Step 1004:SGW receives the QoS information of returning from PCRF with this QoS information and executing carryingBinding function, and return to response message to MME.

Step 1005:PAMGW sends the strategy such as chargingrules, eventtrigger to LGW,LGW receives the corresponding strategy information of preserving in rear renewal IP-CAN.

In the embodiment of the present invention, the LIPA that UE initiates or SIPTO bearing modification process and above-mentioned UE initiateNew loading establishing process similar, between LGW and PAMGW, and PAMGW and PCRF itBetween signalling process identical, repeat no more herein.

In practical application, may be between H (e) NB and MME in the base station sub-system of local network,And between H (e) NB and SGW, dispose H (e) NBGW, the method that the embodiment of the present invention provides is usedTo realize the dynamic PCC scheduling of LIPA or SIPTO carrying, irrelevant with the deployment of H (e) NBGW,All embodiment provided by the present invention have been equally applicable to dispose the local network of H (e) NBGW.

Based on technique scheme, in the embodiment of the present invention, by arranging between LGW and PCRFPAMGW, first interface that this PAMGW comprises by it, that be connected with LGW receives LGWMessage, the second interface comprising by it, be connected with at least one PCRF is sent to this messagePCRF, and receive the message of PCRF by its second interface, and by its first interface by this messageBe sent to LGW, thereby make can carry out Signalling exchange between LGW and PCRF, for local network is carriedThe framework of communicating by letter with PCRF for a kind of LGW of realization.

With the system architecture further providing based on this embodiment, realize between LGW and PCRF about PCCThe request process that strategy distributes, realizes dynamic PCC and distributes, taking LIPA or the SIPTO that can ask for UECarrying dynamic assignment PCC strategy, meets different business demands.

Obviously, those skilled in the art can carry out various changes and modification and not depart from this present inventionBright spirit and scope. Like this, if of the present invention these amendment and modification belong to the claims in the present invention andWithin the scope of its equivalent technologies, the present invention be also intended to comprise these change and modification interior.

Claims

1. a communication system, comprises local gateway LGW and strategy and charging rule functions PCRF, itsBe characterised in that, also comprise tactful cohesively managed gateway PAMGW;

2. the system as claimed in claim 1, is characterized in that, described PAMGW has at least oneFirst interface, each first interface connects a LGW;

Described PAMGW specifically for:

According to the corresponding relation of the interface identifier of the interface identifier of default first interface and the second interface, determineThe second interface corresponding to first interface that receives the message of described LGW, passes through the message of described LGWDescribed the second interface is sent to described PCRF, and determines and receive described PCRF according to described corresponding relationThe first interface corresponding to the second interface of message, the message of described PCRF is sent out by described first interfaceDeliver to described LGW.

3. the system as claimed in claim 1, is characterized in that, a LGW and at least two PAMGWBe connected;

Described LGW also for:

Receiving after the request message of user terminal, according to the indication information of pre-configured user terminal withThe corresponding relation of PAMGW mark, determines in the request message of described user terminal and carries indication information correspondencePAMGW mark, and identify corresponding PAMGW to definite PAMGW and send message, andReceive the message that definite PAMGW identifies corresponding PAMGW;

Or,

Receive by DNS and inquire about the PAMGW address that obtains and to definite according to described PAMGW addressPAMGW send message, and receive disappearing according to the definite PAMGW in described PAMGW addressBreath.

4. system as claimed in claim 3, is characterized in that, described PAMGW is default for basisThe corresponding relation of PCRF mark and the interface identifier of the second interface, determine the PCRF that described LGW specifiesThe second interface of mark correspondence, the different connection requests of the same user terminal that described first interface is receivedMessage be sent to the described PCRF of appointment by the second interface of determining.

5. the system as claimed in claim 1, is characterized in that, the message of described LGW is policy controlWith charging PCC allocation request message;

The message of described PCRF is the message that carries the PCC strategy of distribution.

6. a communication system, comprises local gateway LGW and strategy and charging rule functions PCRF, itsBe characterised in that, also comprise tactful cohesively managed gateway PAMGW and security gateway SeGW;

7. a communication means, is characterized in that, comprising:

8. method as claimed in claim 7, is characterized in that, described PAMGW second connects by itMouth comprises before the message of described LGW is sent to PCRF:

Described PAMGW is according to the interface identifier of the interface identifier of default first interface and the second interfaceCorresponding relation, second interface corresponding to first interface of definite message that receives described LGW.

9. method as claimed in claim 7, is characterized in that, described PAMGW is by described firstInterface comprises before the message of described PCRF is sent to described LGW:

Described PAMGW is according to the interface identifier of the interface identifier of default first interface and the second interfaceCorresponding relation, the first interface corresponding to the second interface of definite message that receives described PCRF.

10. method as claimed in claim 7, is characterized in that, described PAMGW first connects by itMouth receives the message of LGW, comprising:

Described PAMGW receives LGW disappearing via security gateway SeGW transmission by its first interfaceBreath, wherein, by described SeGW according to the interface of the interface identifier of default LGW and described first interfaceThe corresponding relation of mark, determines and sends connecing of described first interface that the interface identifier of LGW of message is correspondingMouth mark, and described in the message of receiving is sent to by first interface corresponding to definite interface identifierPAMGW。

11. methods as claimed in claim 7, is characterized in that, described PAMGW second connects by itThe message of described LGW is sent to PCRF by mouth, comprising:

Described PAMGW is the corresponding relation with the interface identifier of the second interface according to default PCRF mark,The second interface of determining the mark correspondence of the PCRF of described LGW appointment, receives described first interfaceThe message of the different connection requests of same user terminal by determine the second interface be sent to appointment described inPCRF。

12. methods as described in claim 7-11 any one, is characterized in that the message of described LGWFor PCC allocation request message;

13. 1 kinds of tactful cohesively managed gateway PAMGW, is characterized in that, comprising:

14. PAMGW as claimed in claim 13, is characterized in that, also comprise determining unit, useAccording to the corresponding relation of the interface identifier of the interface identifier of default first interface and the second interface, determine and connectReceive second interface corresponding to first interface of the message of described LGW, and determine according to described corresponding relationReceive the first interface corresponding to the second interface of the message of described PCRF.

15. 1 kinds of PCC management systems, comprise local gateway LGW and strategy and charging rule functions PCRF,It is characterized in that, also comprise tactful cohesively managed gateway PAMGW;

16. systems as claimed in claim 15, is characterized in that, described PAMGW has at least oneIndividual first interface, each first interface connects a LGW;

Described PAMGW specifically for:

According to the corresponding relation of the interface identifier of the interface identifier of default first interface and the second interface, determineReceive second interface corresponding to first interface of described PCC allocation request message, described PCC is distributed pleaseAsk message to be sent to described PCRF by described the second interface, and determine and receive according to described corresponding relationThe first interface corresponding to the second interface of the message of the described PCC strategy that carries distribution, carries described in inciting somebody to actionThere is the message of the PCC strategy of distribution to be sent to described LGW by described first interface.

17. systems as claimed in claim 15, is characterized in that, LGW with at least twoPAMGW is connected;

Described LGW also for:

Receiving after the PCC allocation request message of user terminal, according to pre-configured user terminalThe corresponding relation of indication information and PAMGW mark, determines and carries in described PCC allocation request messagePAMGW corresponding to indication information mark, and identify corresponding PAMGW to definite PAMGW and send outSend described PCC allocation request message, and receive definite PAMGW and identify corresponding PAMGW and send outThe message of the PCC strategy that carries distribution sending;

Or,

Receive by DNS and inquire about the PAMGW address that obtains and to definite according to described PAMGW addressPAMGW send described PCC allocation request message, and receive true according to described PAMGW addressThe message of the PCC strategy that carries distribution that fixed PAMGW sends.

18. systems as claimed in claim 17, is characterized in that, described PAMGW is pre-for basisIf the corresponding relation of PCRF mark and the interface identifier of the second interface, determine what described LGW specifiedThe second interface of the mark correspondence of PCRF, the difference of the same user terminal that described first interface is received connectsThe PCC allocation request message that connects request is sent to the described PCRF of appointment by the second interface of determining.

19. 1 kinds of PCC management systems, comprise local gateway LGW and strategy and charging rule functions PCRF,It is characterized in that, also comprise tactful cohesively managed gateway PAMGW and security gateway SeGW;

20. 1 kinds of PCC management methods, is characterized in that, comprising:

21. methods as claimed in claim 20, is characterized in that, described PAMGW by its secondInterface comprises before described PCC allocation request message is sent to PCRF:

Described PAMGW is according to the interface identifier of the interface identifier of default first interface and the second interfaceCorresponding relation, determines the second interface corresponding to first interface that receives described PCC allocation request message.

22. methods as claimed in claim 20, is characterized in that, described PAMGW is by described theBefore the message of the PCC strategy that carries distribution of described PCRF is sent to described LGW by one interface,Comprise:

Described PAMGW is according to the interface identifier of the interface identifier of default first interface and the second interfaceCorresponding relation, determine described in receiving, carry second interface of message of the PCC strategy of distribution corresponding theOne interface.

23. methods as claimed in claim 20, is characterized in that, described PAMGW by its firstInterface receives the described PCC allocation request message of LGW, comprising:

Described PAMGW receives by its first interface the PCC that LGW sends via security gateway SeGWAllocation request message, wherein, by described SeGW according to the interface identifier of default LGW and described firstThe corresponding relation of the interface identifier of interface, the interface identifier of definite LGW that sends PCC allocation request messageThe interface identifier of corresponding described first interface, and the PCC allocation request message of receiving is passed through to determineThe first interface that interface identifier is corresponding is sent to described PAMGW.

24. methods as claimed in claim 20, is characterized in that, described PAMGW by its secondDescribed PCC allocation request message is sent to PCRF by interface, comprising:

Described PAMGW is the corresponding relation with the interface identifier of the second interface according to default PCRF mark,The second interface of determining the mark correspondence of the PCRF of described LGW appointment, receives described first interfaceThe described PCC allocation request message of the different connection requests of same user terminal is by the second interface of determiningBe sent to the PCRF that described LGW specifies.