CN103379555A

CN103379555A - System, device and method for communication

Info

Publication number: CN103379555A
Application number: CN2012101350003A
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: 2013-10-30
Anticipated expiration: 2032-04-28
Also published as: CN103379555B; WO2013159605A1

Abstract

The invention discloses a system, device and method for communication. The system, device and method are used for achieving communication between a local gateway (LGW) and a policy and charging rules function (PCRF) in a local network so that policy control and charging (PCC) distribution can be achieved based on the system, dynamic allocation of PCC strategies is performed on LIPA or SIPTO bearers requested by UE, and different service requirements are met. The system comprises the LGW and the PCRF and further comprises a PAMGW. The PAMGW is used for receiving information of the LGW through a first interface connected with the LGW, sending the information to the PCRF through a second interface connected with the at least one PCRF, receiving the information of the PCRF through the second interface and sending the information to the LGW through the first interface. Meanwhile, the invention discloses a system and method for PCC management.

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 the local network deployment scenario, user terminal (UE) can be linked into the local network related with this Home eNodeB by Home eNodeB, and this technology is called local IP access (Local IP Access, LIPA).Local network comprises home network, enterprise network etc.UE also can directly access Internet by family base station system, and this technology is called the IP operation shunting (Selected IP Traffic Offload, SIPTO) of selection.

In 3G (Third Generation) Moblie standardization body (3GPP) the R10 stage, realized the LIPA technology of UE by Home eNodeB access local network, after UE is linked into Home eNodeB, data are directly by local gateway (Local Gateway, LGW) accessing local network, and do not need through core net.From chain of command and user's face, LGW has realized the partial function of packet data network gateway (PDN Gateway, PGW), 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 to adopt the LIPA framework to realize that UE sets up the method that SIPTO connects by Home eNodeB in discussion

At present, agreement is supported PGW and PCRF (Policy and Charging Rules Function, strategy and charging rule functions) between interface, connect for the Packet Data Network that is connected to PGW (PDN), PCRF can dynamically send service quality (Quality of Service, QOS) control strategy to PGW.

Accompanying drawing 1 is depicted as the LIPA framework in R10 stage, if UE sets up normal bearer connection to core net, the data surface passage is that UE passes through the Uu interface to (evolution) Home eNodeB (H (e) NB), arrive gateway (Serving GW by S1-U interface again, SGW), to PGW, the SGi interface by PGW is connected in the network of access through the S5 interface.Wherein, H (e) NB is connected to Mobility Management Entity (MME) by S1-MME interface, and MME is connected to SGW by the S11 interface.But, if setting up LIPA, UE connects, and the data surface passage is (e) NB from UE to H, and the SGi interface by LGW accesses local network again, and does not need the functional entity through core net.

Wherein, LGW can realize the function of part PGW in local network, such as IP address assignment etc.The R10 stage is simple in order to realize, LGW and H (e) NB realizes (namely close and establish) at same physical entity.But LGW does not support the interface between PCRF and the LGW, can not communicate by letter with PCRF.

Therefore local network is not supported dynamic strategy control and charging (Policy Control and Charging, PCC) assigning process, when UE initiates the process of setting up of LIPA dedicated bearer, perhaps initiate all can be refused by network the processes such as QoS modification of LIPA carrying.

The follow-up SIPTO framework of the follow-up evolution architecture of LIPA being discussed and having been accessed by Home eNodeB of 3GPP, as shown in Figure 2, LIPA framework compared to the R10 stage, the main distinction is that LGW realizes (namely setting up separately) with H (e) NB at different physical entities, be connected the business continuance when moving with better support UE between LGW and H (e) NB by the Sxx interface.Wherein, LGW is connected to SGW by the S5 interface, and H (e) NB is connected to SGW by S1-U interface, and is connected to Mobility Management Entity (Mobility Management Entity by S1-MME interface, MME), connect by the S11 interface between MME and the SGW.Be connected to SGW at LGW by security gateway (Security GW, SeGW), H (e) NB is connected to SGW and MME through SeGW and (evolution) femto gateway (H (e) NB GW).But, do not support the interface between PCRF and the LGW in the LIPA/SIPTO framework of evolution, still do not have realization to the dynamic QQS control procedure of LIPA/SIPTO carrying, do not support the foundation of LIPA/SIPTO dedicated bearer and the QOS modification that LIPA/SIPTO is carried yet.

This just means that all business by the LIPA/SIPTO access all must adopt identical acquiescence QoS (default QoS) value, the QoS of this acquiescence is kept at home subscriber server (Home Subscriber Server as CAMEL-Subscription-Information, HSS) in, UE is obtained from HSS by MME when adhering to, should signatory acquiescence qos value be non-ensured bit rate (non GBR) carrying, can not guarantee the demand of real time business.Simultaneously, along with the increase of user's request, for example the user may need to access by the LIPA mode printer of family, and the Online Video of mobile phone etc. is realized in the movie resource storehouse of notebook that also may be by the mobile phone access family.If all adopt signatory acquiescence qos value obviously can not satisfy professional QoS demand for these business provide service.

This shows that along with the development of network application, it is different when professional that the user adopts LIPA/SIPTO to connect to initiate by Home eNodeB, needs network also can provide different QoS control for these business.At first, this just needs to realize communicating by letter between the LGW and PCRF in the local network, then, further realizes that based on communicating by letter of LGW and PCRF dynamic PCC distributes.

Summary of the invention

The invention provides a kind of communication system, apparatus and method, in order in local network, to realize communicating by letter of LGW and PCRF, realizing that PCC distributes based on this system, LIPA or SIPTO carrying dynamic assignment PCC strategy for the UE request satisfy different business demands.

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

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

Described PAMGW, be used for receiving by the first interface that is connected with described LGW the message of described LGW, be sent to described PCRF by the second interface that is connected with at least one described PCRF, and receive the message of described PCRF by described the second interface, and be sent to described LGW by described first interface.

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

Described SeGW, be used for after receiving the message of LGW, corresponding relation according to the interface identifier of the first interface of the interface identifier of default LGW and described PAMGW, determine to send the interface identifier of first interface corresponding to the interface identifier of LGW of message, and the message of receiving is sent to described PAMGW by first interface corresponding to interface identifier of determining; And be used for after the message of receiving the PCRF that described PAMGW sends by first interface, corresponding relation according to the interface identifier of the first interface of the interface identifier of described LGW and described PAMGW, determine to send the interface identifier of LGW corresponding to the described first interface of message, and the message of receiving is sent to corresponding LGW by the interface identifier of determining;

Described PAMGW, be used for receiving by the first interface that is connected with described SeGW the message of described LGW, be sent to described PCRF by the second interface that is connected with at least one described PCRF, and receive the message of described PCRF by described the second interface, and be sent to described SeGW by described first interface.

A kind of communication means comprises:

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

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

A kind of tactful cohesively managed gateway PAMGW comprises:

The first interface that is connected with LGW, for the message that receives described LGW, and the message that sends PCRF to described LGW;

The second interface that is connected with at least one PCRF is used for the message of described LGW is sent to described PCRF, and the message that receives described PCRF.

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

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

A kind of PCC management system of using comprises local gateway LGW and strategy and charging rule functions PCRF, also comprises tactful cohesively managed gateway PAMGW and security gateway SeGW;

Described SeGW, be used for after receiving the PCC allocation request message of LGW, corresponding relation according to the interface identifier of the first interface of the interface identifier of default LGW and described PAMGW, determine to send the interface identifier of first interface corresponding to the interface identifier of LGW of PCC allocation request message, and the PCC allocation request message of receiving is sent to described PAMGW by first interface corresponding to interface identifier of determining; And be used for after the message of the PCC strategy that carries distribution of receiving the PCRF that described PAMGW sends by first interface, corresponding relation according to the interface identifier of the first interface of the interface identifier of described LGW and described PAMGW, definite transmission carries the interface identifier of LGW corresponding to the described first interface of message of PCC strategy of distribution, and the message of the PCC strategy that carries distribution that will receive is sent to corresponding LGW by the interface identifier of determining;

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

A kind of PCC management method comprises:

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

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

Based on technique scheme, in the embodiment of the invention, by between LGW and PCRF, PAMGW being set, this PAMGW receives the message of LGW by the first interface that is connected with LGW, by the second interface that is connected with at least one PCRF this message is sent to PCRF, and the message that receives PCRF by the second interface, and by first interface this message is sent to LGW, thereby so that can carry out Signalling exchange between LGW and the PCRF, the framework that provides a kind of LGW of realization to communicate by letter with PCRF for local network.

With the system architecture that provides based on this embodiment, the request process that distributes about the PCC strategy between realization LGW and the PCRF realizes that dynamic PCC distributes, and carrying dynamic assignment PCC strategy as LIPA or the SIPTO of UE request, satisfy different business demands.

Description of drawings

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

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

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

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

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

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

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

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

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

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

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

Embodiment

In order in local network, to realize communicating by letter of LGW and PCRF, to realize that by communicating by letter of LGW and PCRF dynamic PCC distributes, LIPA or SIPTO carrying dynamic assignment PCC strategy for the UE request, so that the different business that adopts LIPA/SIPTO to connect adopts different QoS carryings to transmit data, local network also need with the entity (being PCRF) of disposing dynamic PCC framework between set up interface and be connected.

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

In the grand network, the function of PGW implementation strategy and charge execution function PCEF (Policy and Charging Enforcement Function), the main functions such as business datum Stream Discovery (such as the service data Stream Discovery, the business datum Stream Discovery), QoS mapping, charging of carrying out.PCRF sends to PGW with the PCC strategy that produces.

Different from PGW, LGW is finished by common deployment of family (or enterprise) and operator, generally is positioned at family (or enterprise) inside.If H (e) NB and LGW close establish, the family that has then disposed H (e) NB can have a LGW simultaneously.Along with the evolution of LIPA framework, after permission H (e) NB and LGW set up separately, same residential building or same enterprise can use a LGW.

Do not support at present the interface between LGW and the PCRF in the LIPA framework, can't communicate by letter between PGW and the PCRF, and, with respect to the number of PGW in network, the quantity of LGW is huge, even if PGW directly can be linked to each other with PCRF, it is very large for the impact meeting of PCRF that a large amount of LGW is connected directly to PCRF, manages also very complicated.

Accordingly, the invention provides a kind of communication system, be used for the communication between realization LGW and the 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 the dynamic PCC strategy of the bearer connection of employing LIPA/SIPTO transmission to distribute, realize that the carrying QoS in the 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 invention provides a kind of communication system, and this system comprises local gateway (LGW) and PCRF (strategy and charging rule functions), also comprises tactful cohesively managed gateway (PAMGW).

This PAMGW is used for receiving by the first interface that is connected with LGW the message of LGW, is sent to PCRF by the second interface that is connected with at least one PCRF, and passes through the message that the second interface receives PCRF, and is sent to LGW by first interface.

In this system, PAMGW connects respectively LGW and at least one PCRF as interface, is used for the Signalling exchange between PCRF and the LGW.

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

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

This PAMGW specifically is used for: according to the corresponding relation of the interface identifier of the interface identifier of default first interface and the second interface, determine second interface corresponding to first interface of the message of reception LGW, the message of LGW is sent to PCRF by the second interface of determining, and determine to receive the first interface corresponding to the second interface of the message of PCRF according to corresponding relation, the message of PCRF is sent to LGW by the first interface of determining.

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

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

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

Preferably, a LGW can be connected with at least two PAMGW, thereby shares the load of PAMGW.

Preferably, when a LGW connects a plurality of PAMGW, carried out the selection function of PAMGW by LGW.

Wherein, LGW carries out selection function can select to determine PAMGW according to static configuration information, also can select to determine PAMGW according to the Query Result that network side returns.

In a specific implementation, LGW is according to the indication information of pre-configured user terminal and the corresponding relation of PAMGW sign, determine the PAMGW sign corresponding to indication information of user terminal, and to PAMGW transmission message corresponding to definite PAMGW sign, and the message that receives PAMGW corresponding to definite PAMGW sign.

In the practical application, this indication information can be APN (Access Point Name, APN), PGW sign etc.

For example, LGW determines the PAMGW sign corresponding to APN of user terminal requests according to the corresponding relation of pre-configured APN and PAMGW sign; Perhaps, LGW is according to the corresponding relation of the PGW of pre-configured user terminal sign with the PAMGW sign, determines the sign of the PAMGW that the PGW of user terminal requests is corresponding.

In another specific implementation, LGW receives by name server (Domain Name Server, DNS) inquire about the PAMGW address that obtains, and send message to the PAMGW that determines according to the PAMGW address, and the message that receives the PAMGW that determines according to the PAMGW address.

Particularly, LGW obtains the PAMGW address by the dns server that arranges in the requester network, in dns server, dispose the corresponding relation of indication information and PAMGW sign, LGW sends query requests to dns server, carry indication information in this query requests, this indication information can be APN, the PGW sign of user terminal requests etc., dns server is according to the PAMGW address corresponding to indication information of carrying in the corresponding relation search request of configuration, and the address of this PAMGW is carried at returns to LGW in the Query Result.

Only for giving an example, during specific implementation, the selection function that LGW carries out PAMGW can have various ways, namely can be used for the present invention as long as can reach the purpose of the PAMGW that determines the current use of LGW herein.

Wherein, PAMGW also is used for by the second interface the message of the different connection requests of the same user terminal of first interface reception being sent to the PCRF of LGW appointment.

Particularly, specify PCRF by LGW, LGW can specify identical PCRF for the different connection requests for same user terminal, also can specify different PCRF for the dissimilar connection request for same user terminal.The sign of the PCRF of the appointment of carrying in the message that PAMGW sends according to LGW is sent to the message of LGW the PCRF of appointment.

In the practical application, PAMGW also can send to the message that LGW sends each PCRF that is connected with the second interface of the PAMGW that determines, PCRF resolve to obtain the sign of the PCRF of the appointment of carrying in the message, determine this appointment PCRF be designated the sign of self time, carry out the PCC strategy and distribute.

Particularly, the message of LGW is the PCC allocation request message, and the message of PCRF is the message that carries the PCC strategy of distribution.Wherein, binding or the modification of this PCC distribution request and the tactful local network LIPA of being used for of PCC that distributes or SIPTO establishment of connection, carrying.

In the practical application, as long as two entities have been disposed identical protocol stack, can resolve message each other between these two entities, in existing system, PGW and PCRF can resolve message each other, LGW has inherited most of function of PGW, and only needing to increase the protocol stack identical with PGW in LGW can be so that LGW and PCRF can resolve message each other.

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

Particularly, SeGW is used for after receiving the message of LGW, corresponding relation according to the interface identifier of the interface identifier of default LGW and first interface, determine to send the interface identifier of first interface corresponding to the interface identifier of LGW of message, and the message of receiving is sent to PAMGW by first interface corresponding to interface identifier of determining; And be used for after the message of receiving the PCRF that PAMGW sends by first interface, corresponding relation according to the interface identifier of the first interface of the interface identifier of LGW and PAMGW, determine to send the interface identifier of LGW corresponding to the first interface of message, and the message of receiving is sent to corresponding LGW by the interface identifier of determining;

PAMGW is used for receiving by the first interface that is connected with SeGW the message of LGW, is sent to PCRF by the second interface that is connected with at least one PCRF, and passes through the message that the second interface receives PCRF, and is sent to SeGW by first interface.

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

Wherein, a LGW can link to each other with at least two PAMGW behind SeGW.The interface identifier of the first interface of each PAMGW is different.

Based on the system architecture identical with accompanying drawing 3, the embodiment of the invention also provides a kind of PCC management system, the realization principle of this PCC management system is identical with the realization principle of above-mentioned communication system, specifically can be referring to the description of above-mentioned communication system, the repetition part repeats no more, and this PCC management system comprises LGW and PCRF, also comprises PAMGW, wherein

PAMGW is used for receiving by the first interface that is connected with LGW the PCC allocation request message of LGW, be sent to PCRF by the second interface that is connected with at least one PCRF, and receive the message of the PCC strategy that carries distribution of PCRF by the second interface, and be sent to LGW by first interface.

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

PAMGW specifically is used for:

Corresponding relation according to the interface identifier of the interface identifier of default first interface and the second interface, determine to receive second interface corresponding to first interface of PCC allocation request message, the PCC allocation request message is sent to PCRF by the second interface, and according to definite first interface corresponding to the second interface that receives the message of the PCC strategy that carries distribution of this corresponding relation, the message that carries the PCC strategy of distribution is sent to LGW by first interface.

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

LGW also is used for:

After receiving the PCC allocation request message of user terminal, according to the indication information of pre-configured user terminal and the corresponding relation of PAMGW sign, determine that PAMGW corresponding to indication information that carries in the PCC allocation request message identifies, and to PAMGW transmission PCC allocation request message corresponding to definite PAMGW sign, and the message that receives the PCC strategy that carries distribution of PAMGW transmission corresponding to definite PAMGW sign;

Perhaps,

The PAMGW address that reception is obtained by DNS inquiry also sends the PCC allocation request message to the PAMGW that determines according to the PAMGW address, and the message that receives the PCC strategy that carries distribution that the PAMGW that determines according to the PAMGW address sends.

Particularly, PAMGW is used for according to default PCRF sign and the corresponding relation of the interface identifier of the second interface, determine the second interface of sign correspondence of the PCRF of LGW appointment, the PCC allocation request message of the different connection requests of the same user terminal that first interface is received is sent to the PCRF of appointment by the second interface of determining.

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

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

SeGW is used for after receiving the PCC allocation request message of LGW, corresponding relation according to the interface identifier of the first interface of the interface identifier of default LGW and PAMGW, determine to send the interface identifier of first interface corresponding to the interface identifier of LGW of PCC allocation request message, and the PCC allocation request message of receiving is sent to PAMGW by first interface corresponding to interface identifier of determining; And be used for after the message of the PCC strategy that carries distribution of receiving the PCRF that PAMGW sends by first interface, corresponding relation according to the interface identifier of the first interface of the interface identifier of LGW and PAMGW, definite transmission carries the interface identifier of LGW corresponding to the first interface of message of PCC strategy of distribution, and the message of the PCC strategy that carries distribution that will receive is sent to corresponding LGW by the interface identifier of determining;

PAMGW is used for receiving by the first interface that is connected with SeGW the PCC allocation request message of LGW, be sent to PCRF by the second interface that is connected with at least one PCRF, and receive the message of the PCC strategy that carries distribution of PCRF by the second interface, and be sent to SeGW by first interface.

As shown in Figure 4, a kind of PAMGW also is provided in the embodiment of the invention, operation principle identical that relates to PAMGW in the specific works principle of this PAMGW and the said system, specifically can be referring to the description in the said system, this PAMGW has the first interface 401 that is connected with LGW, and the second interface 402 that is connected with at least one PCRF, wherein

The first interface that is connected with LGW, for the message that receives LGW, and the message that sends PCRF to LGW;

The second interface that is connected with at least one PCRF is used for the message of LGW is sent to PCRF, and the message that receives PCRF.

Wherein, PAMGW comprises a plurality of first interfaces or a plurality of the second interface,

Particularly, PAMGW also comprises determining unit 403, be used for the corresponding relation according to the interface identifier of the interface identifier of default first interface and the second interface, determine second interface corresponding to first interface of the message of reception LGW, and first interface corresponding to the second interface of determining the message of reception PCRF according to this corresponding relation.

Wherein, the message of LGW is the PCC allocation request message, and the message of PCRF is the message that carries the PCC strategy of distribution.Binding or the modification of PCC distribution request and the tactful local network LIPA of being used for of the PCC that distributes or SIPTO establishment of connection, carrying.

Based on the said system framework, shown in accompanying drawing 5A, in the embodiment of the invention, a kind of communication means also is provided, and the realization principle of the method is identical with the realization principle of above-mentioned communication system, specifically can be referring to the description of system, the repetition part repeats no more, and the method mainly may further comprise the steps:

Step 501:PAMGW receives the message of LGW by its first interface, and by its second interface the message of LGW is sent to PCRF, 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 by its first interface the message of PCRF is sent to LGW.

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

Particularly, when the concrete a plurality of first interfaces of PAMGW or a plurality of the second interface, the corresponding relation of the interface identifier of the first interface that the PAMGW basis is default and the interface identifier of the second interface, determine to receive second interface corresponding to first interface of the message of LGW, by the second interface of determining the message of LGW is sent to PCRF.

Equally, PAMGW is according to the interface identifier of default first interface and the corresponding relation of the interface identifier of the second interface, determines to receive the first interface corresponding to the second interface of the message of PCRF, and PAMGW is sent to LGW by definite first interface with the message of PCRF.

Alternatively, be connected to through SeGW at LGW in the situation of first interface of PAMGW, PAMGW receives the message that LGW sends via SeGW by its first interface, wherein, by the corresponding relation of SeGW according to the interface identifier of the interface identifier of default LGW and first interface, determine to send the interface identifier of first interface corresponding to the interface identifier of LGW of message, and the message of receiving is sent to PAMGW by first interface corresponding to interface identifier of determining.

Particularly, PAMGW is according to default PCRF sign and the corresponding relation of the interface identifier of the second interface, determine the second interface of sign correspondence of the PCRF of LGW appointment, the message of the different connection requests of the same user terminal that first interface is received is sent to the PCRF of LGW appointment by the second interface of determining.

Wherein, the message of LGW is the PCC allocation request message; The message of PCRF is the message that carries the PCC strategy of distribution.Binding or the modification of PCC distribution request and the tactful local network LIPA of being used for of the PCC that distributes or SIPTO establishment of connection, carrying.

Similarly, based on the said system framework, shown in accompanying drawing 5B, in the embodiment of the invention, a kind of PCC management method also is provided, and the realization principle of the method is identical with the realization principle of above-mentioned PCC management system, specifically can be referring to the description of system, the repetition part repeats no more, and the method mainly may further comprise the steps:

Step 510:PAMGW passes through the PCC allocation request message that its first interface receives LGW, and by its second interface the PCC allocation request message is sent to PCRF, and wherein, the second interface is connected with charging rule functions PCRF with at least one strategy.

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

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

Wherein, PAMGW is sent to the message of the PCC strategy that carries distribution of PCRF before the LGW by its first interface, the corresponding relation of the interface identifier of the first interface that the PAMGW basis is default and the interface identifier of the second interface, definite first interface corresponding to the second interface that receives the message of the PCC strategy that carries distribution.

Particularly, PAMGW receives the PCC allocation request message that LGW sends via security gateway SeGW by its first interface, wherein, by the corresponding relation of SeGW according to the interface identifier of the interface identifier of default LGW and first interface, determine to send the interface identifier of first interface corresponding to the interface identifier of LGW of PCC allocation request message, and the PCC allocation request message of receiving is sent to PAMGW by first interface corresponding to interface identifier of determining.

Wherein, PAMGW is according to default PCRF sign and the corresponding relation of the interface identifier of the second interface, determine the second interface of sign correspondence of the PCRF of LGW appointment, the PCC allocation request message of the different connection requests of the same user terminal that first interface is received is sent to the PCRF of LGW appointment by the second interface of determining.

Can be to use GTP (GPRS Tunnel Protocol) to be connected between SGW and the LGW in the practical application, also can be to use proxy-mobile IP (Proxy Mobile IP, PMIP) agreement to be connected.Below by specific embodiment both of these case is specifically described respectively.

The first situation: be elaborated below in conjunction with the situation of using GTP to be connected between one～three couple of SGW of specific embodiment and the LGW.

Specific embodiment one, as shown in Figure 6, the detailed process of setting up the connection of LIPA or SIPTO Packet Data Network (PDN) is as follows:

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

Step 602:MME is chosen as the corresponding packet data network gateway of LIPA APN (APN) (PDN GW) with the LGW of UE, and after MME set up process to the SGW initiation session, SGW set up request to the LGW initiation session.

In the prior art, after LGW receives the session establishment request of SGW, divide to be used in and set up address, user's face tunnel and the port numbers that LGW is connected with H (e) NB, and be carried at and return to SGW in the response message, after SGW sends to MME with this response message, MME sends response message from the backward UE of CAMEL-Subscription-Information (NAS layer) that HSS obtains UE, carry this address, user's face tunnel in this response message, the CAMEL-Subscription-Information of port numbers and UE, include the signatory acquiescence qos value of different APN in this CAMEL-Subscription-Information, and MME can be with this address, user's face tunnel, CAMEL-Subscription-Information notice H (e) NB of port numbers and UE is so that the direct tunnel between LGW and H (e) NB can be successfully established.

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

Step 603:LGW sends the PCC allocation request message by the first interface of PAMGW to PAMGW, and the APN that in this PCC allocation request message, carries international mobile subscriber identity (International Mobile Subscriber Identity, IMSI), the IP address of UE and ask to connect.

After step 604:PAMGW received the PCC allocation request message of LGW, the second interface by PAMGW sent to PCRF with this PCC allocation request message.

In PAMGW, be preset with the corresponding relation of the interface identifier of the interface identifier of first interface and the second interface, PAMGW sends to PCRF with this PCC allocation request message by the second interface of determining according to definite the second interface corresponding to first interface that receives the PCC allocation request message of LGW of this corresponding relation.

Step 605:PCRF is that UE distributes the PCC strategy according to the PCC allocation request message that receives, and comprises the policy informations such as QoS, charging policy (charging rules), Event triggered (event trigger) in this PCC strategy.

Particularly, PCRF is that UE distributes the PCC strategy according to the strategy of configuration, perhaps from application function (Application Function, AF) CAMEL-Subscription-Information that obtains application layer message and obtain UE from signatory profile warehouse (Subscription Profile Repository, SPR) is that UE distributes the PCC strategy.It is multiple that those skilled in the art can know that PCRF is that UE distributes the concrete mode of PCC strategy to have according to existing protocol, only for for example, is not limited to the present invention herein.

The message that step 606:PCRF will carry the PCC strategy returns to PAMGW by the second interface of PAMGW, again by PAMGW notice LGW.

Particularly, the corresponding relation of the interface identifier of the first interface that the PAMGW basis is default and the interface identifier of the second interface, the first interface corresponding to the second interface of the message of PCC strategy carried in definite reception, and this message of carrying the PCC strategy is sent to LGW by the first interface of determining.

Wherein, LGW receives the message of carrying the PCC strategy of returning from PAMGW, preserves its entrained PCC strategy, and the carrying of setting up the QoS in the corresponding PCC strategy for UE.

Wherein, LGW also returns the session establishment response message to SGW, and SGW returns to MME with this response message, and MME returns response message to UE (the NAS layer of UE), sets up message with the PDN connection of adhering to that response UE initiates, and sets up S1 carrying and empty port load-supporting.

Specific embodiment two is not supported dynamic PCC in the existing framework, when UE initiates LIPA or SIPTO carrying and sets up request message, returns refuse information by LGW.In this specific embodiment, behind the above-mentioned PCC framework of employing, UE supports dynamic PCC in local network, for the different business that UE initiates, and the carrying that also can set up different QoS, as shown in Figure 7, the detailed process of setting up LIPA or SIPTO carrying for UE is as follows:

Step 701:SGW receives that the backward LGW of the carrying of the UE request of setting up sends and sets up the request message of new carrying.

Step 702:LGW sends the PCC allocation request message by the first interface of PAMGW to PAMGW, be communicated with access network (IP Connectivity Access Network to set up new IP, IP-CAN) carrying, this PCC distributes to carry in the request asks the PCC policy information, the PCC policy information of this request comprises the information such as QoS, TFT of request, also carries the indication information that is used to indicate the request type of setting up new carrying in this PCC distribution request.

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

The PCC allocation request message that step 704:PCRF receives according to the second interface by PAMGW, obtain application layer message and generate the PCC strategy of the newly-built carrying ask from the CAMEL-Subscription-Information that SPR obtains UE from AF, comprise the policy informations such as QoS, charging rules, event trigger in this PCC strategy.

Step 705:PCRF is carried at the PCC strategy of the newly-built carrying of asking that the second interface by PAMGW returns to PAMGW in the response message.

The response message of the PCC strategy that carries the newly-built carrying of asking that step 706:PAMGW will receive returns to LGW by its first interface.

Particularly, the corresponding relation of the interface identifier of the first interface that the PAMGW basis is default and the interface identifier of the second interface, definite first interface corresponding to the second interface that receives response message sends to LGW with this response message by the first interface of determining.

The PCC strategy of the newly-built carrying of asking of carrying in the response message of step 707:LGW preservation by the first interface reception of PAMGW was kept away according to this PCC strategy and was carried out bearing binding, and returns carrying to SGW and set up response message.

Specific embodiment three, in existing R10 framework, local network does not support that if UE initiates the bearing modification request, LGW will refuse this request to the modification process of the LIPA that has set up or SIPTO carrying yet.In this specific embodiment, behind the above-mentioned PCC framework of employing, UE supports dynamic PCC, can realize the bearing modification process of different QoS in local network, and as shown in Figure 8, detailed process is as follows:

After step 801:SGW receives the bearing modification request message of UE, send the bearing modification request message of revising built vertical carrying to LGW.

Step 802:LGW sends the PCC allocation request message by the first interface of PAMGW to PAMGW, the IP-CAN carrying of having set up is revised in request, this PCC allocation request message carries the PCC policy information that request is revised, the TFT information that the PCC policy information that this request is revised comprises the QoS information that request is revised and/or asks to revise, in the practical application, can also include the PCC policy information that other request is in addition revised, this PCC allocation request message also carries the bearing identification that request is revised.

Step 803:PAMGW sends to PCRF with the PCC allocation request message that receives by its second interface.

The PCC allocation request message that step 804:PCRF receives according to the second interface by PAMGW, obtain application layer message and generate new PCC strategy from the CAMEL-Subscription-Information that SPR obtains UE from AF, and this new PCC strategy is carried in the response message, the second interface by PAMGW returns to PAMGW with this response message, carry new QoS and/or the TFT information of the carrying distribution of promising request modification in this new PCC strategy, in the practical application, in addition, new PCC strategy can also comprise other policy information of the carrying distribution of promising request modification.

Step 805:PAMGW returns to LGW with the response message that receives by its first interface.

Step 806:LGW preserves the new PCC strategy that carries in the response message of receiving, carries out bearing binding according to this new PCC strategy, and returns the bearing modification response message to SGW.

The second situation: be elaborated below in conjunction with the situation of using PMIP to be connected between four～five couples of SGW of specific embodiment and the LGW.

Specific embodiment four, as shown in Figure 9, the detailed process of setting up LIPA or SIPTO PDN connection is as follows:

Step 901:UE initiates to adhere to the PDN connection and sets up message to MME, and request MME sets up LIPA for it or SPTO APN connects.

Step 902:MME is chosen as LGW with LIPA or PGW corresponding to SPTO APN of UE, MME sets up request to the SGW initiation session, SGW receives the PMIP session establishment process that is initiated to LGW after the session establishment request that sends from MME, require the PMIP session between foundation and the LGW, SGW initiates gateway control session (Gateway Control Session) process to PCRF simultaneously.

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

Step 903:LGW sends the PCC allocation request message by the first interface of PAMGW to PAMGW, and carries the APN of IMSI, IP address and the request connection of UE in this PCC allocation request message.

After step 904:PAMGW received the PCC allocation request message of LGW, the second interface by PAMGW sent to PCRF with this PCC allocation request message.

Step 905:PCRF is that UE distributes the PCC strategy according to the PCC allocation request message that receives, and comprises the policy informations such as QoS, charging rules, event trigger in this PCC strategy.

Particularly, PCRF is that UE distributes the PCC strategy according to the strategy of configuration, perhaps obtains application layer message and is that UE distributes the PCC strategy from the CAMEL-Subscription-Information that SPR obtains UE from AF.It is multiple that those skilled in the art can know that PCRF is that UE distributes the concrete mode of PCC strategy to have according to existing protocol, only for for example, is not limited to the present invention herein.

The message that step 906:PCRF will carry part PCC strategy returns to SGW, and simultaneously, the message that PCRF will carry another part PCC strategy returns to PAMGW by the second interface of PAMGW, by PAMGW notice LGW.

Particularly, the message that PCRF will carry qos policy returns to SGW, and the strategies such as the charging rules except qos policy, event trigger are sent to PAMGW.

Wherein, SGW preserves its part qos policy that carries after receiving the message of carrying the part qos policy of returning from PCRF, and the carrying of setting up corresponding QoS for UE.LGW receives rear these policy informations of preserving of the strategies such as charging rules, event trigger that return from PAMGW, and returns the message of PMIP session establishment success to SGW.Wherein, SGW also returns the response message of PMIP session establishment success to MME, and Non-Access Stratum (NAS) request of MME response UE is for it sets up S1 carrying and empty port load-supporting.

Specific embodiment five, as shown in Figure 10, the detailed process that new LIPA or SIPTO carrying are set up in the UE initiation is as follows:

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

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

The new qos policy that step 1003:PCRF will distribute returns to SGW, and returns strategies such as charging rules, event trigger for the IP-CAN that upgrades UE to PAMGW.

Step 1004:SGW receives after the QoS information of returning from PCRF with this QoS information and executing bearing binding function, and returns response message to MME.

Step 1005:PAMGW sends the strategies such as charging rules, event trigger to LGW, LGW receives the corresponding strategy information of preserving among the rear renewal IP-CAN.

In the embodiment of the invention, the LIPA that UE initiates or SIPTO bearing modification process are similar with the new loading establishing process of above-mentioned UE initiation, and between LGW and the PAMGW, and PAMGW is identical with signalling process between the PCRF, repeats no more herein.

In the 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) NB GW, the method that the embodiment of the invention provides is in order to realize the dynamic PCC scheduling of LIPA or SIPTO carrying, irrelevant with the deployment of H (e) NB GW, namely all embodiment provided by the present invention have been equally applicable to dispose the local network of H (e) NB GW.

Based on technique scheme, in the embodiment of the invention, by between LGW and PCRF, PAMGW being set, this PAMGW receives the message of LGW by its first interface that comprise, that be connected with LGW, by its second interface that comprise, that be connected with at least one PCRF this message is sent to PCRF, and the message that receives PCRF by its second interface, and by its first interface this message is sent to LGW, thereby so that can carry out Signalling exchange between LGW and the PCRF, the framework that provides a kind of LGW of realization to communicate by letter with PCRF for local network.

With the system architecture that further provides based on this embodiment, realize between LGW and the PCRF about the tactful request process that distributes of PCC, realize that dynamic PCC distributes, can as LIPA or the SIPTO carrying dynamic assignment PCC strategy of UE request, satisfying different business demands.

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims

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

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

Described PAMGW specifically is used for:

Corresponding relation according to the interface identifier of the interface identifier of default first interface and the second interface, determine second interface corresponding to first interface of the message of the described LGW of reception, the message of described LGW is sent to described PCRF by described the second interface, and determine to receive the first interface corresponding to the second interface of the message of described PCRF according to described corresponding relation, the message of described PCRF is sent to described LGW by described first interface.

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

Described LGW also is used for:

After receiving the request message of user terminal, according to the indication information of pre-configured user terminal and the corresponding relation of PAMGW sign, determine to carry in the request message of described user terminal PAMGW sign corresponding to indication information, and to PAMGW transmission message corresponding to definite PAMGW sign, and the message that receives PAMGW corresponding to definite PAMGW sign;

Perhaps,

The PAMGW address that reception is obtained by DNS inquiry also sends message to the PAMGW that determines according to described PAMGW address, and the message that receives the PAMGW that determines according to described PAMGW address.

4. system as claimed in claim 3, it is characterized in that, described PAMGW is used for according to default PCRF sign and the corresponding relation of the interface identifier of the second interface, determine the second interface of sign correspondence of the PCRF of described LGW appointment, the message of the different connection requests of the same user terminal that described first interface is received is 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 control and 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, it is characterized in that, also comprises 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 is sent to the message of described LGW before the PCRF by its second interface, comprising:

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

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

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

10. method as claimed in claim 7 is characterized in that, described PAMGW comprises by the message of its first interface reception LGW:

Described PAMGW receives the message that LGW sends via security gateway SeGW by its first interface, wherein, by the described SeGW corresponding relation according to the interface identifier of the interface identifier of default LGW and described first interface, determine to send the interface identifier of described first interface corresponding to the interface identifier of LGW of message, and the message of receiving is sent to described PAMGW by first interface corresponding to interface identifier of determining.

11. method as claimed in claim 7 is characterized in that, described PAMGW is sent to PCRF by its second interface with the message of described LGW, comprising:

Described PAMGW is according to default PCRF sign and the corresponding relation of the interface identifier of the second interface, determine the second interface of sign correspondence of the PCRF of described LGW appointment, the message of the different connection requests of the same user terminal that described first interface is received is sent to the described PCRF of appointment by the second interface of determining.

12., it is characterized in that the message of described LGW is the PCC allocation request message such as each described method of claim 7-11;

13. a tactful cohesively managed gateway PAMGW is characterized in that, comprising:

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

15. a PCC management system comprises local gateway LGW and strategy and charging rule functions PCRF, it is characterized in that, also comprises tactful cohesively managed gateway PAMGW;

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

Described PAMGW specifically is used for:

Corresponding relation according to the interface identifier of the interface identifier of default first interface and the second interface, determine to receive second interface corresponding to first interface of described PCC allocation request message, described PCC allocation request message is sent to described PCRF by described the second interface, and determine to receive the first interface corresponding to the second interface of the message of the described PCC strategy that carries distribution according to described corresponding relation, the described message that carries the PCC strategy of distribution is sent to described LGW by described first interface.

17. system as claimed in claim 15 is characterized in that, a LGW is connected with at least two PAMGW;

Described LGW also is used for:

After receiving the PCC allocation request message of user terminal, according to the indication information of pre-configured user terminal and the corresponding relation of PAMGW sign, determine that PAMGW corresponding to indication information that carries in the described PCC allocation request message identifies, and send described PCC allocation request message to PAMGW corresponding to PAMGW sign that determines, and the message that receives the PCC strategy that carries distribution that PAMGW corresponding to PAMGW sign that determine send;

Perhaps,

The PAMGW address that reception is obtained by DNS inquiry also sends described PCC allocation request message to the PAMGW that determines according to described PAMGW address, and the message that receives the PCC strategy that carries distribution that the PAMGW that determines according to described PAMGW address sends.

18. system as claimed in claim 17, it is characterized in that, described PAMGW is used for according to default PCRF sign and the corresponding relation of the interface identifier of the second interface, determine the second interface of sign correspondence of the PCRF of described LGW appointment, the PCC allocation request message of the different connection requests of the same user terminal that described first interface is received is sent to the described PCRF of appointment by the second interface of determining.

19. a PCC management system comprises local gateway LGW and strategy and charging rule functions PCRF, it is characterized in that, also comprises tactful cohesively managed gateway PAMGW and security gateway SeGW;

20. a PCC management method is characterized in that, comprising:

21. method as claimed in claim 20 is characterized in that, described PAMGW is sent to described PCC allocation request message before the PCRF by its second interface, comprising:

The corresponding relation of the interface identifier of the first interface that described PAMGW basis is default and the interface identifier of the second interface, definite the second interface corresponding to first interface that receives described PCC allocation request message.

22. method as claimed in claim 20 is characterized in that, described PAMGW is sent to the message of the PCC strategy that carries distribution of described PCRF before the described LGW by described first interface, comprising:

Described PAMGW is according to the interface identifier of default first interface and the corresponding relation of the interface identifier of the second interface, determines the first interface corresponding to the second interface of the message of the described PCC strategy that carries distribution of reception.

23. method as claimed in claim 20 is characterized in that, described PAMGW comprises by the described PCC allocation request message of its first interface reception LGW:

Described PAMGW receives the PCC allocation request message that LGW sends via security gateway SeGW by its first interface, wherein, by the described SeGW corresponding relation according to the interface identifier of the interface identifier of default LGW and described first interface, determine to send the interface identifier of described first interface corresponding to the interface identifier of LGW of PCC allocation request message, and the PCC allocation request message of receiving is sent to described PAMGW by first interface corresponding to interface identifier of determining.

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

Described PAMGW is according to default PCRF sign and the corresponding relation of the interface identifier of the second interface, determine the second interface of sign correspondence of the PCRF of described LGW appointment, the described PCC allocation request message of the different connection requests of the same user terminal that described first interface is received is sent to the PCRF of described LGW appointment by the second interface of determining.