CN102791042B - Method and system for establishing S9 subsession and policy and charging rules function (PCRF) - Google Patents

Method and system for establishing S9 subsession and policy and charging rules function (PCRF) Download PDF

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Publication number
CN102791042B
CN102791042B CN201110127341.1A CN201110127341A CN102791042B CN 102791042 B CN102791042 B CN 102791042B CN 201110127341 A CN201110127341 A CN 201110127341A CN 102791042 B CN102791042 B CN 102791042B
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China
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pcrf
session
s9
sessions
information
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CN201110127341.1A
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Chinese (zh)
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CN102791042A (en
Inventor
刘国燕
周晓云
吴锦花
毕以峰
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中兴通讯股份有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M15/00Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/66Policy and charging system

Abstract

The invention relates to a method and system for establishing S9 subsession and a policy and charging rules function (PCRF). The method triggers a PCRF of a visit address by a PCRF of a home address to establish S9 subsession, and includes the steps of sending original information relative to establishment of the S9 subsession from the PCRF of the home address to the PCRF of the visit address; and receiving the original information relative to establishment of the S9 subsession by the PCRF of the visit address, generating information relative to S9 subsession according to the original information, and establishing S9 subsession. The method can still establish S9 subsession when an interface doesn't exist between the PCRF in the visited network (V-PCRF) and a mobile network element of the visit address.

Description

S9 session establishing methods, system and PCRF

Technical field

The present invention relates to moving communicating field, more particularly to a kind of S9 session establishing methods, system and PCRF.

Background technology

The evolution of third generation partner program (3rd Generation Partnership Project, 3GPP) point Universal Terrestrial Radio Access Network (the Evolved Universal of system system (Evolved Packet System, EPS) by evolution Terrestrial Radio Access Network, E-UTRAN), mobile management unit (Mobility Management Entity, MME), gateway (Serving Gateway, S-GW), grouped data network gateway (Packet Data Network Gateway, P-GW) and home subscriber server (Home Subscriber Server, HSS) composition.

EPS supports the intercommunication with non-3 GPP system, wherein, the intercommunication with non-3 GPP system is realized by S2a/b/c interfaces, P-GW is used as the anchor point between 3GPP and non-3 GPP system.In the system architecture diagram of EPS, non-3 GPP system access is divided into can not Trust non-3 GPP access and trusted non-3 GPP access;Wherein, trustless non-3 GPP access need to be through the grouped data of evolution Gateway (Evolved Packet Data Gateway, ePDG) is connected with P-GW, and the interface between ePDG and P-GW is S2b;It is credible Appoint non-3 GPP access directly can be connected with P-GW by S2a interfaces, S2a interfaces adopt proxy-mobile IP (Proxy Mobile IP, PMIP) agreement carries out information exchange;In addition, S2c interfaces provide user equipment (User Equipment, UE) and P-GW Between the related control of user plane and mobility support, its mobility management protocol supported is the mobile IP v 6 for supporting double stacks (Moblie IPv6 Support for Dual Stack Hosts and Routers, DSMIPv6), which can be used for insincere Appoint non-3 gpp and trusted non-3 GPP access.

If EPS support policy charging controls (Policy and Charging Control, PCC), then strategy and charging Rule functional (Policy and Charging Rules Function, PCRF) carries out the formulation of strategy and charging regulation, it By the application function in interface Rx and carrier network agreement (Internet Protocol, IP) business network (Application Function, AF) is connected, and obtains business information, for generating the business information of PCC strategies.When S-GW with When S5/S8 interfaces between P-GW adopt GPRS Tunnel Protocol (GPRS Tunnelling Protocol, GTP), stay in P-GW Stayed strategy and charge execution function (Policy and Charging Enforcement Function, PCEF), PCRF with Information is exchanged by Gx interfaces between P-GW, is responsible for initiating the foundation of carrying, modification and is discharged, it is ensured that the service quality of business datum (Quality of Service, QoS), and carry out charging control.When the S5/S8 interfaces of S-GW and P-GW adopt proxy-mobile IP When (Proxy Mobile IP, PMIP), bearing binding and event reporting function (Bearer Binding and in S-GW, are resident Event Report Function, BBERF), and information is exchanged by Gxc interfaces between S-GW and PCRF.When by credible When appointing non-3 GPP network to access, BBERF, the access network of trusted non-3 GPP network are also resident in the trusted non-3 GPP access network Central Shanxi Plain Pass exchanges information by Gxa interfaces between PCRF, as shown in Figure 1.

When user equipment (User Equipment, UE) is roamed, ownership place PCRF (Home PCRF, H-PCRF) and visit Visit and there is interface between ground PCRF (Visited PCRF, V-PCRF) for S9 interfaces, enable the policy events of roaming, home network Enough intercommunications, negotiation work, by taking S2a, S2b access way as an example, as shown in Figure 2.

When fixed network is used as non-3 GPP network access to mobile network, as fixed network mobile fusion framework.Melt in fixed network mobile Close in framework, WLAN (Wireless LAN, WLAN) or base station from home (Home NodeB or Home ENodeB, H (e) NB) EPS (as shown in figures 3 to 6) can be accessed by fixed network circuit, wherein, fixed network is used as non-3 GPP network Access, broadband policy control function (Broadband Policy Control Function, BPCF) passes through and PCRF between S9* interfaces exchange information, make mobile network and fixed network policy framework intercommunication, realize the unified pipe of mobile network resource and fixed network resource Reason control.Under roaming scence, the interface between H-PCRF, V-PCRF and BPCF needs to set up corresponding session, moves ownership The strategy of dynamic network can be delivered in the policy functional entity of roaming place fixed network, realize the system of mobile network resource and fixed network resource One management and control.

If fixed network can perceive mobile UE and access, or there is interface between visited place mobile net elements and V-PCRF Talk about, then BPCF sets up S9* sessions or visited place mobile net elements to V-PCRF requests and builds to V-PCRF transmissions gateway control session Vertical request/IP-CAN session establishment request messages, set up S9 sessions between V-PCRF and then triggering and H-PCRF, as shown in Figure 7. Also, V-PCRF can according to the key message in the message for receiving, including:ID, packet data network (Packet Data Network, PDN) identify with packet data network (Packet Data Network, PDN) connection identifier (if PDN If mark and PDN connection identifier are one-to-one relation, then PDN connection identifier is not carried), further determine whether to build Vertical S9 sessions.

The principle that V-PCRF sets up S9 sessions is presented herein below:

V-PCRF (includes according to the request message for receiving:Gateway control session sets up the request of request/IP-CAN session establishments Message), the UE is first determined whether with the presence or absence of corresponding S9 sessions, and operated accordingly:

A) if there is S9 sessions, then request type is renewal solicited status;V-PCRF determines whether that request message is It is no to identify with PDN connection identifier (condition is optional) (such as comprising PDN:For S2a interfaces, S5/S8GTP/PMIP and S2b interfaces Scene can carry these information), and search whether the PDN has had corresponding S9 sessions, and processed accordingly:

A1. if it can not find corresponding S9 sessions, then V-PCRF will distribute a new S9 session mark Know, in being included in newly-built sub- session execution information property value to (Attribute-Value Pair, AVP), and in the AVP Comprising sub- session operation AVP etc., wherein, sub- session operation AVP is set to " foundation " state.

A2., if it can find corresponding S9 sessions, concrete operations are divided into following several situations:

A. when indicating to be set as " session delay binding " comprising binding session in the request message that V-PCRF is received, new net Close control session and same IP-CAN sessions are associated with already present gateway control session, then V-PCRF will distribute a new S9 Sub- session identification, is included in sub- session execution information AVP, and also comprising sub- session operation AVP etc. in the AVP, wherein, sub- meeting Words operation AVP is set to " foundation " state, and associates new gateway control session and new S9 sessions;

B. when V-PCRF is received from new BBERF request messages, new gateway control session and already present gateway control During the same IP-CAN sessions of session association processed, but when not having " session delay binding indicate ", then V-PCRF modifications are already present S9 session related informations, such as:Sub- session operation information is set to " modification " state;

C. when V-PCRF receive be IP-CAN conversation request when, then V-PCRF changes the related letter of already present S9 sessions Breath, such as:Sub- session operation information is set to " modification " state.

B) if there is no S9 sessions, then by newly-built S9 sessions, request type is initial request state to V-PCRF, and Further determine whether comprising PDN marks with PDN connection identifier (condition is optional) (such as:S2a interfaces, S5/S8GTP/PMIP and S2b interfaces scene can carry these information):If including, V-PCRF will distribute a new S9 session identification, including In sub- session execution information AVP, and also comprising sub- session operation AVP etc. in the AVP.

See from the above, V-PCRF judges that the information of S9 session establishments mainly includes:PDN connection identifier, APN, Diameter information etc..

And mobile UE can not be perceived in fixed network and accessed, and between visited place mobile net elements and V-PCRF, there is no interface In the case of (H (e) NB as shown in Figure 3 are accessed, or the WLAN S2b accesses shown in Fig. 4, Fig. 5, the WLAN S2c shown in Fig. 6 Access, referring specifically to description below), from description below as can be seen that H-PCRF and P-GW, ownership place ePDG are (such as Fig. 5 institutes Show) there is interface conjunctionn.After P-GW receives corresponding signaling message, IP-CAN sessions can be set up to H-PCRF requests;H-PCRF After by the message trigger of P-GW, S9* sessions are set up to BPCF requests by V-PCRF, for follow-up business Policies Resource intercommunication Consult.In addition, if the packet data gateway (Evolved Packet Data Gateway, ePDG) of evolution is and PCRF between Support if Gxb* interfaces (as shown in Figure 5), then after ePDG receives corresponding signaling message, net can be set up to H-PCRF requests Control session is closed, and after H-PCRF is by the message trigger of ePDG, by V-PCRF, S9* sessions is set up to BPCF requests.

From in terms of analysis above, H-PCRF needs the foundation for triggering S9 sessions, in the scene that can obtain PDN relevant informations Under, it is also desirable to the S9 sessions based on PDN ranks are set up in triggering.For H-PCRF trigger, set up H-PCRF and V-PCRF it Between S9 sessions, existing corresponding solution, prior art do not solve H-PCRF triggering V-PCRF and set up S9 sessions Problem, present invention seek to address that this problem.

Explanation:

Fig. 3 is accessed for H (e) NB, there is Gx interfaces, and V-PCRF is not deposited with the network element of visited place between P-GW and H-PCRF In interface;

Fig. 4 is that WLAN S2b are accessed, and there is Gx interfaces between P-GW and H-PCRF, and V-PCRF and visited place non-3 gpp net There is no interface in the network element of network;

Fig. 5 is accessed for WLAN S2b, there is Gx interfaces, there is Gxb* between ePDG and H-PCRF between P-GW and H-PCRF Interface, and there is no interface with the network element of visited place non-3 GPP network in V-PCRF;

Fig. 6 is that WLAN S2c are accessed, and there is Gx interfaces between P-GW and H-PCRF, and V-PCRF and visited place non-3 gpp net There is no interface in the network element of network.

The content of the invention

The technical problem to be solved in the present invention is to provide a kind of S9 session establishing methods, system and PCRF, to solve V- When there is no interface with visited place mobile net elements in PCRF, it is impossible to set up the problem of S9 sessions.

To solve above technical problem, the invention provides a kind of S9 session establishing methods, the method is by ownership place plan Slightly trigger visited place PCRF and set up S9 sessions with charging rule functions (PCRF), including:

Ownership place PCRF sends the raw information relevant with S9 session establishments to visited place PCRF;

The visited place PCRF is received and is generated S9 sessions according to the raw information relevant with S9 session establishments Related information, and set up S9 sessions.

Further, the raw information relevant with S9 session establishments is disappeared by re-authentication/authorization requests (RAR) Breath sends.

Further, the raw information relevant with S9 session establishments includes:ID, PDN link informations, Diameter session identifications, session identification, binding session are indicated, credit control request type and S9 session establishments are indicated;Institute Stating the related information of S9 sessions includes session identification, ID, sub- session execution information, Diameter session identifications and letter Use control data type.

Further, before the ownership place PCRF sends the raw information relevant with S9 session establishments, held Carry binding and event reporting function (BBERF), the packet data gateway (ePDG) of evolution or grouped data network gateway (P-GW) The triggering of the message of transmission.

To solve above technical problem, present invention also offers a kind of S9 session building systems, the system includes:

The sending module of ownership place "Policy and Charging Rules Function (PCRF), for sending and S9 meetings to visited place PCRF Words set up relevant raw information;

The receiver module of the visited place PCRF, for receiving having with S9 session establishments for the ownership place PCRF transmissions The raw information of pass;And

The sub- session establishment module of the visited place PCRF, for according to the original letter relevant with S9 session establishments Breath generates the related information of S9 sessions, and sets up S9 sessions.

To solve above technical problem, present invention also offers a kind of "Policy and Charging Rules Function (PCRF), the PCRF Including:

Sending module, when the PCRF is located at ownership place, for sending relevant with S9 session establishments to visited place PCRF Raw information;

Receiver module, when the PCRF is located at visited place, is built with S9 sessions for receiving the ownership place PCRF transmissions Vertical relevant raw information;And

Sub- session establishment module, when the PCRF is located at ownership place, for according to described relevant with S9 session establishments Raw information generates the related information of S9 sessions, and sets up S9 sessions.

To solve above technical problem, present invention also offers another kind S9 session establishing methods, the method is by belonging to Ground "Policy and Charging Rules Function (PCRF) triggering visited place PCRF sets up S9 sessions, including:

Ownership place PCRF generates the related information of S9 sessions when S9 sessions are set up in decision-making, and to visited place PCRF Send the related information of the S9 sessions;

The visited place PCRF is received and is set up S9 sessions according to the related information of the S9 sessions.

To solve above technical problem, present invention also offers a kind of S9 session building systems, the system includes:

The sub- session establishment decision-making module of ownership place "Policy and Charging Rules Function (PCRF), for setting up S9 in decision-making During session, the related information of S9 sessions is generated;

The sending module of the ownership place PCRF, for sending the related information of the S9 sessions to visited place PCRF;

The receiver module of the visited place PCRF, for receiving the letter of the S9 sessions correlation that the ownership place PCRF sends Breath;And

The sub- session establishment module of the visited place PCRF, for setting up S9 according to the related information of the S9 sessions Session.

To solve above technical problem, present invention also offers a kind of "Policy and Charging Rules Function (PCRF), the PCRF Including:

Sub- session establishment decision-making module, when the PCRF is located at ownership place, for when S9 sessions are set up in decision-making, generating The related information of S9 sessions;

Sending module, when the PCRF is located at ownership place, for sending the S9 sessions correlation to visited place PCRF Information;

Receiver module, when the PCRF is located at visited place, for receiving the S9 session phases that the ownership place PCRF sends The information of pass;And

Sub- session establishment module, when the PCRF is located at visited place, for being built according to the related information of the S9 sessions Vertical S9 sessions.

S9 session establishing methods of the present invention, system and PCRF are in visited place PCRF (i.e. V-PCRF) and visited place mobile network In the case of unit does not have interface, S9 sessions are set up by ownership place PCRF (i.e. H-PCRF) triggering V-PCRF.

Description of the drawings

Fig. 1 is EPS framework;

Fig. 2 is a kind of framework of prior art UE by H (e) NB access mobile core networks;

Fig. 3 is a kind of roaming architecture of prior art UE by H (e) NB access mobile core networks;

Fig. 4 is that prior art UE is unrestrained by the local route of the non-3 GPP network S2b interface access mobile core network architecture Trip scene one;

Fig. 5 is that prior art UE is unrestrained by the local route of the non-3 GPP network S2b interface access mobile core network architecture Trip scene two;

Fig. 6 is that prior art UE is unrestrained by the local route of the non-3 GPP network S2c interface access mobile core network architecture Trip scene;

Fig. 7 is the S9 session establishment flow processs that prior art V-PCRF is initiated;

Fig. 8 is the S9 session establishments flow scheme one that H-PCRF of the present invention is initiated;

Fig. 9 is the S9 session establishments flow scheme two that H-PCRF of the present invention is initiated.

Specific embodiment

The main thought of S9 session establishing methods of the present invention, system and PCRF be visited place PCRF (i.e. V-PCRF) with In the case of visited place mobile net elements do not have interface, S9 sessions are set up by ownership place PCRF (i.e. H-PCRF) triggering V-PCRF.

Preferably, ownership place PCRF triggerings V-PCRF sets up S9 sessions following two schemes:

Scheme one, ownership place PCRF send the original letter relevant with S9 session establishments when S9 sessions are set up in decision-making Breath, generates the related information of S9 sessions by visited place PCRF, including:

A1) ownership place PCRF sends the raw information relevant with S9 session establishments to visited place PCRF;

In the present invention, the raw information relevant with S9 session establishments includes:ID is (such as:UE NAI, or IMSI), PDN link informations, Diameter session identifications, session identification, binding session instruction, credit control request type and S9 Sub- session establishment is indicated.

Foregoing PDN link informations refer to for showing to point to the information of a specific PDN connection, it will be appreciated that ground, when When certain PDN mark only corresponds to a PDN connection, PDN link informations refer to that PDN is identified;When certain PDN mark correspondence, several PDN connect When connecing, PDN link informations include PDN marks and PDN connection identifier.

A2) the visited place PCRF is received and is generated S9 meetings according to the raw information relevant with S9 session establishments The related information of words, and set up S9 sessions.

In the present invention, the related information of S9 sessions include session identification, ID, sub- session execution information, Diameter session identifications and credit control request type.

Scheme two, ownership place PCRF when S9 sessions are set up in decision-making, the related information of S9 sessions, and be sent to visit Ground PCRF is performed, including:

B1) ownership place PCRF generates the related information of S9 sessions, and is sent to visit when S9 sessions are set up in decision-making Ground PCRF;

B2) the visited place PCRF is received and is set up S9 sessions according to the related information of the S9 sessions.

It is to make the object, technical solutions and advantages of the present invention become more apparent, by the following examples and referring to the drawings, right The present invention is further described.It should be noted that in the case where not conflicting, in the embodiment and embodiment in the application Feature can be mutually combined.

It is for the description of S9 session establishments is prior art in the following examples, in order to scheme integrity considers, also right Which has carried out the content description of correlation.

Embodiment 1

The embodiment 1 mainly describes the scheme one that H-PCRF triggering V-PCRF initiate S9 session establishments, in the enforcement In example 1, S9 sessions are set up in H-PCRF decision-makings, and send RAR message to V-PCRF, and carrying in message is had with S9 session establishments The raw information of pass, including:ID, PDN mark, PDN connection identifier, Diameter session identifications, binding session indicate, The information such as credit control request type, the instruction of S9 session establishments and session identification;As shown in figure 8, the flow process includes:

Step 101:(include when H-PCRF receives related network elements:The network elements such as BBERF, ePDG, PCEF) after the message that sends, Relevant information is transmitted to by V-PCRF by re-authentication/authorization requests (Re-Auth-Request, RAR) message;

H-PCRF receives that (message is such as:Gateway control session sets up request or IP-CAN session establishment request messages) Afterwards, processed accordingly, it is specific as follows:

According to the ID received in information, H-PCRF judges that S9 sessions whether there is:1) if there is S9 sessions Words, then credit control request type is to update solicited status;If S9 sessions exist if, then further according to PDN mark and PDN connection identifier, judges whether S9 sessions:If there is no S9 sessions, even if or there is S9 sessions, but bag The binding session for containing indicates to be set as " session delays to bind ", then need newly-built S9 sessions;2) if there is no S9 sessions Words, then credit control request type is initial request state, and H-PCRF sets up session instruction by sending request, or also includes Request sets up session label information to V-PCRF, carrys out newly-built S9 sessions, and is also required to newly-built S9 sessions.

Relevant information is transmitted to by H-PCRF by re-authentication/authorization requests (Re-Auth-Request, RAR) message V-PCRF, if necessary to if newly-built S9 sessions, then the following raw information relevant with S9 session establishments be included in message: ID is (such as:UE NAI, or IMSI), PDN marks, PDN connection identifier, Diameter session identifications, binding session Instruction, credit control request type, S9 session establishments are indicated, session identification, wherein, PDN marks, PDN connection identifier are optional Carry, other information of the prior art in the message, can also be included;When need not set up S9 sessions, then may in message (referring specifically to TS29.215) such as QoS installations, sub- session decision information can be carried.

Wherein, Diameter session identifications are H-PCRF according to the gateway control session request message or IP-CAN for receiving The corresponding Diameter session identifications that conversation request message is set up, Diameter basic agreements ensure that the session identification is complete Office is unique.

When H-PCRF is received from new BBERF request messages, may indicate comprising binding session, and be set as " session delays to bind ", such as:New gateway control session associates same IP-CAN meetings with already present gateway control session Words.

When there is multiple PDN connections under a PDN mark, PDN marks and PDN connection identifier represent a PDN connection.

Step 102:After V-PCRF receives RAR message, according to the instruction of S9 session establishments whether is carried in RAR message, enter Row is specific to be processed:If not carrying, then normal RAR message process is carried out according to prior art, and reply is recognized again Card/authorization response (Re-Auth-Answer, RAA) message is to H-PCRF;If carrying, then RAA message is replied to H- PCRF, can only carry session identification, and continue step 103 in message;

Step 103:If S9 session establishments are carried in RAR message indicates that V-PCRF sends diameter credit control to H-PCRF Request (CC-Request, CCR) message, comprising the information that S9 sessions are related in message, specifically includes session identification, Yong Hubiao Know (such as IMSI), sub- session execution information, Diameter session identifications, the information such as credit control request type;In addition, the message In be likely to comprising other information of the prior art.

It is as follows that V-PCRF sets up S9 session operating principles:

V-PCRF searches the UE with the presence or absence of corresponding S9 according to the credit control request type in the request message for receiving Session, and perform corresponding operation:

A) if credit control request type is to update solicited status, and if indicating comprising S9 session establishments, then V- PCRF will distribute a new S9 session identification, be included in sub- session execution information AVP, and also comprising sub- meeting in the AVP Words operation AVP etc., wherein, sub- session operation AVP is set to " foundation " state, if binding session configured information, then can Words binding instruction is also contained in sub- session and performs in AVP.If carrying PDN marks, PDN connection identifier, then wrap respectively It is contained in the called station identifications AVP and PDN connection identifier AVP of sub- session execution information AVP.

B) if credit control request type is initial request state, V-PCRF is by newly-built S9 sessions, and includes S9 If session establishment is indicated, V-PCRF is by the basis of newly-built S9 sessions, then a newly-built S9 session, and distributes one New S9 session identifications, are included in sub- session execution information AVP, and also comprising sub- session operation AVP etc. in the AVP, its In, the sub- session operation in sub- session execution information is set to " foundation " state.If carrying PDN marks, PDN connection identifier Words, then be separately contained in the called station identifications AVP and PDN connection identifier AVP of sub- session execution information AVP.

Step 104:H-PCRF receives CCR message, replys Credit Control Answer (CC-Answer, CCA) to V-PCRF and disappears Breath, message include policy related information, such as:Session identification, sub- session determine information;

By Diameter session identifications, H-PCRF confirms that the request that V-PCRF is initiated is relevant with step 101 to H-PCRF, root According to the information obtained from V-PCRF and the other users relevant information from Diameter acquisition conversations, PCC is tactful for formulation, and to V-PCRF replys Credit Control Answer (CC-Answer, CCA) message, and message includes policy related information, such as:Session mark Know, sub- session determines information.

H-PCRF associates S9 sessions and corresponding Diameter sessions, wherein, Diameter sessions include:Gateway control Session, IP-CAN sessions.

After V-PCRF receives Credit Control Answer message, information is determined according to the sub- session in message, related plan is forwarded The network element of association is arrived slightly, including:BPCF.

In above example, H-PCRF and V-PCRF alternatively, can also be led to by existing RAR, RAA interacting message Cross newly-increased messaging information.

In order to realize above scheme, present invention also offers a kind of system of S9 session establishments, the system includes ownership The sub- session of the sending module, the receiver module of visited place PCRF and visited place PCRF on ground "Policy and Charging Rules Function (PCRF) Module is set up, wherein:

The sending module of ownership place "Policy and Charging Rules Function (PCRF), for sending and S9 meetings to visited place PCRF Words set up relevant raw information;

Preferably, the raw information relevant with S9 session establishments passes through re-authentication/authorization requests (RAR) message Send.

The raw information relevant with S9 session establishments includes:ID is (such as:UE NAI, or IMSI), PDN link informations, Diameter session identifications, session identification, binding session instruction, credit control request type and S9 sessions Set up and indicate.

Further, the Diameter session identifications are that the ownership place PCRF please according to the gateway control session for receiving Seek the corresponding Diameter session identifications that message or IP-CAN conversation request messages are set up.

The receiver module of the visited place PCRF, for receiving having with S9 session establishments for the ownership place PCRF transmissions The raw information of pass;

The sub- session establishment module of the visited place PCRF, for according to the original letter relevant with S9 session establishments Breath generates the related information of S9 sessions, and sets up S9 sessions.

Further, the ownership place PCRF also include message send trigger module, for receive bearing binding and What event reporting function (BBERF), the packet data gateway (ePDG) of evolution or grouped data network gateway (P-GW) sent disappears After breath, trigger the sending module and send information.

In addition, present invention also offers a kind of "Policy and Charging Rules Function (PCRF), the PCRF includes sending module, connects Module and sub- session establishment module are received, wherein:

Sending module, when the PCRF is located at ownership place, for sending relevant with S9 session establishments to visited place PCRF Raw information;

Preferably, the raw information relevant with S9 session establishments passes through re-authentication/authorization requests (RAR) message Send.

The raw information relevant with S9 session establishments includes ID (such as:UE NAI, or IMSI), PDN link informations, Diameter session identifications, session identification, binding session instruction, credit control request type and S9 sessions Set up and indicate.

As it was previously stated, the Diameter session identifications are the ownership place PCRF being asked according to the gateway control session for receiving Seek the corresponding Diameter session identifications that message or IP-CAN conversation request messages are set up.

Receiver module, when the PCRF is located at visited place, for receiving that the ownership place PCRF sends and S9 sessions Set up relevant raw information;And

Sub- session establishment module, when the PCRF is located at visit, for according to the original relevant with S9 session establishments Beginning information generates the related information of S9 sessions, and sets up S9 sessions.

Preferably, PCRF also includes that message sends trigger module, when the PCRF is located at ownership place, for holding receiving Carry binding and event reporting function (BBERF), the packet data gateway (ePDG) of evolution or grouped data network gateway (P-GW) After the message of transmission, trigger the sending module and send information.

Embodiment 2

The embodiment 2 mainly describes the scheme two that H-PCRF triggering V-PCRF initiate S9 session establishments, in the enforcement In example 2, after H-PCRF is subject to the message trigger of related network elements, according to the parameter information that the message for receiving is carried, decision-making is set up S9 sessions, and the related information of S9 sessions is generated, RAR message is sent to V-PCRF, carry S9 sessions related in message Information, including:ID, sub- session execution information, credit control request type, Diameter session identifications;With enforcement The difference of example 1 is that H-PCRF generates the related information of S9 sessions, as shown in figure 9, the flow process is specifically included:

Step 201:H-PCRF receives the message of related network elements transmission (such as:Gateway control session sets up request or IP- CAN session establishment request messages) after, S9 sessions are set up in decision-making, the related information of the S9 sessions of generation is added to RAR and is disappeared V-PCRF is sent in breath;

The message includes:ID, sub- session execution information, Diameter session identifications, credit control request class The information such as type, session identification.

S9 sessions are set up in H-PCRF decision-makings, and concrete principle of decision-making is as follows:

H-PCRF searches the UE with the presence or absence of corresponding S9 sessions according to the ID in the request message for receiving, and Perform corresponding operation:

A) if there is S9 sessions, then credit control request type is renewal solicited status;If do not wrapped in request message If connection identifier containing PDN and PDN marks, then existing S9 session related informations are updated, and if the request message is new Gateway control session is asked, and when searching which according to ID and having associated a gateway control session, then many BBERF actions AVP is set to " foundation " state and access network gateway address AVP is set, and is included in the AVP of command-levels;Otherwise, based on this A little information searchings PDN connect whether the presence of corresponding S9 sessions, and perform corresponding operation:

A1. if it can not find corresponding S9 sessions, then H-PCRF will distribute a new S9 session mark Know, be included in sub- session execution information AVP, and also comprising sub- session operation AVP etc. in the AVP, wherein, sub- session operation AVP is set to " foundation " state.

A2., if it can find corresponding S9 sessions, concrete operations are divided into following several situations:

A. indicate to be set as that " session is prolonged comprising binding session in H-PCRF receives the request message of new gateway control session Phase binds ", and identified according to PDN when searching which with PDN connection identifier and having associated a gateway control session, then H-PCRF will divide With a new S9 session identification, be included in sub- session execution information AVP, and also AVP is operated comprising sub- session in the AVP Deng, wherein, sub- session operation AVP is set to " foundation " state;

B. when H-PCRF is received from new BBERF request messages, and new gateway control session and already present gateway During the control same IP-CAN sessions of session association, but when not having " session delay binding indicate ", then V-PCRF modifications are existing S9 session related informations, wherein, sub- session operation information is set to " modification " state;Many BBERF actions AVP (are set to " build It is vertical " state) and access network gateway address AVP be also contained in sub- session execution AVP.

C. when H-PCRF receive be IP-CAN conversation request when, then V-PCRF changes the related letter of already present S9 sessions Breath, wherein, sub- session operation information is set to " modification " state.

B) if there is no S9 sessions, then H-PCRF by newly-built S9 sessions, ask for initial by credit control request type State is sought, and further determines whether to identify (such as comprising PDN connection identifier and PDN:S2a interfaces, S5/S8GTP/PMIP and S2b interfaces scene can carry these information), if including, then H-PCRF will distribute a new S9 session identification, bag Include in sub- session execution information AVP, and also comprising sub- session operation AVP etc. in the AVP, wherein, sub- session operation AVP is set to " foundation " state.

In addition, if if carrying PDN marks, PDN connection identifier, being then separately contained in sub- session execution information AVP In called station identifications AVP and PDN connection identifier AVP.

Step 202:After V-PCRF receives RAR message, according to RAR message neutron session operation information state, carry out concrete Process;If fruit session operation information state is " modification " state, then normal RAR message is carried out according to prior art Process, and RAA message is replied to H-PCRF;If fruit session operation information state is " foundation " state, then reply again Certification/authorization response (Re-Auth-Answer, RAA) message can only carry session identification to H-PCRF, in message, and continue Step 203.

Step 203:After V-PCRF receives RAR message, the related information of S9 sessions is extracted from RAR message, S9 is performed The foundation operation of sub- session, sends CCR message to H-PCRF, and session identification is included in message, and ID is (such as:UE NAI, Or IMSI), sub- session execution information, Diameter session identifications, the information such as credit control request type;

Step 204:H-PCRF formulation PCC are tactful, and reply CCA message to V-PCRF, and message includes tactful related letter Breath;

H-PCRF receives CCR message, and by Diameter session identifications, H-PCRF confirms the request of V-PCRF initiations and step Rapid 201 is relevant, and according to the information obtained from V-PCRF and the other users relevant information from Diameter acquisition conversations, system Determining PCC tactful, and CCA message being replied to V-PCRF, message includes policy related information, such as:Session identification, sub- session are determined Determine information.

H-PCRF associates S9 sessions and corresponding Diameter sessions, wherein, Diameter sessions include:Gateway control Session, IP-CAN sessions.

After V-PCRF receives CCA message, information is determined according to the sub- session in message, related strategy is forwarded to association Network element, including:BPCF.

In order to realize above example 2, present invention also offers a kind of S9 session building systems, the system includes ownership The sub- session establishment decision-making module on ground "Policy and Charging Rules Function (PCRF), the sending module of ownership place PCRF, visited place The sub- session establishment module of the receiver module and visited place PCRF of PCRF, wherein:

The sub- session establishment decision-making module of ownership place "Policy and Charging Rules Function (PCRF), for setting up S9 in decision-making During session, the related information of S9 sessions is generated;

Preferably, the related information of the S9 sessions include session identification, ID, sub- session execution information, Diameter session identifications and credit control request type.

The sending module of the ownership place PCRF, for sending the related information of the S9 sessions to visited place PCRF;

Preferably, the related information of the S9 sessions is sent by re-authentication/authorization requests (RAR) message.

The receiver module of the visited place PCRF, for receiving the letter of the S9 sessions correlation that the ownership place PCRF sends Breath;And

The sub- session establishment module of the visited place PCRF, for setting up S9 according to the related information of the S9 sessions Session.

Further, the ownership place PCRF also includes sub- session decision-making trigger module, for receiving bearing binding Send with event reporting function (BBERF), the packet data gateway (ePDG) of evolution or grouped data network gateway (P-GW) After message, triggering the sub- session establishment decision-making module carries out decision-making.

In addition, present invention also offers a kind of "Policy and Charging Rules Function (PCRF), the PCRF includes:

Sub- session establishment decision-making module, when the PCRF is located at ownership place, for when S9 sessions are set up in decision-making, generating The related information of S9 sessions;

Preferably, the related information of the S9 sessions include session identification, ID, sub- session execution information, Diameter session identifications and credit control request type.

Sending module, when the PCRF is located at ownership place, for sending the S9 sessions correlation to visited place PCRF Information;

Preferably, the related information of the S9 sessions is sent by re-authentication/authorization requests (RAR) message.

Receiver module, when the PCRF is located at visited place, for receiving the S9 session phases that the ownership place PCRF sends The information of pass;And

Sub- session establishment module, when the PCRF is located at visited place, for being built according to the related information of the S9 sessions Vertical S9 sessions.

Further, the PCRF also include sub- session decision-making trigger module, the PCRF be located at ownership place when, for Receive bearing binding and event reporting function (BBERF), the packet data gateway (ePDG) of evolution or Packet Data Network's network diagram After closing the message that (P-GW) sends, triggering the sub- session establishment decision-making module carries out decision-making.

The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair Change, equivalent, improvement etc., should be included within the scope of the present invention.

One of ordinary skill in the art will appreciate that all or part of step in said method can be instructed by program Related hardware is completed, and described program can be stored in computer-readable recording medium, such as read only memory, disk or CD Deng.Alternatively, all or part of step of above-described embodiment can also be realized using one or more integrated circuits.Accordingly Ground, each module in above-described embodiment can be realized in the form of hardware, it would however also be possible to employ the form reality of software function module It is existing.The present invention is not restricted to the combination of the hardware and software of any particular form.

Claims (14)

1. a kind of S9 session establishing methods, it is characterised in that the method is touched by ownership place "Policy and Charging Rules Function PCRF Send out visited place PCRF and set up S9 sessions, including:
Ownership place PCRF sends the raw information relevant with S9 session establishments to visited place PCRF;
The visited place PCRF is received and is generated S9 sessions correlation according to the raw information relevant with S9 session establishments Information, and set up S9 sessions;
Wherein, the ownership place PCRF send described in before the raw information relevant with S9 session establishments, by bearing binding with The message that event reporting function BBERF, the packet data gateway ePDG of evolution or grouped data network gateway P-GW send is touched Send out.
2. the method for claim 1, it is characterised in that:The raw information relevant with S9 session establishments is by weight New certification/authorization requests RAR message sends.
3. the method for claim 1, it is characterised in that:The raw information relevant with S9 session establishments includes: ID, PDN link informations, Diameter session identifications, binding session instruction, credit control request type and S9 sessions Set up and indicate;The related information of the S9 sessions include ID, sub- session execution information, Diameter session identifications and Credit control request type.
4. a kind of S9 session building systems, it is characterised in that the system includes:
The message of ownership place "Policy and Charging Rules Function PCRF sends trigger module, for receiving bearing binding and event After the message that function of reporting BBERF, the packet data gateway ePDG of evolution or grouped data network gateway P-GW send, triggering is sent out Module is sent to send information;
The sending module of the ownership place PCRF, for sending the original letter relevant with S9 session establishments to visited place PCRF Breath;
The receiver module of the visited place PCRF, for receiving the relevant with S9 session establishments of the ownership place PCRF transmissions Raw information;And
The sub- session establishment module of the visited place PCRF, for according to the raw information life relevant with S9 session establishments Into the related information of S9 sessions, and set up S9 sessions.
5. system as claimed in claim 4, it is characterised in that:The raw information relevant with S9 session establishments includes: ID, PDN link informations, Diameter session identifications, binding session instruction, credit control request type and S9 sessions Set up and indicate;The related information of the S9 sessions include ID, sub- session execution information, Diameter session identifications and Credit control request type.
6. a kind of "Policy and Charging Rules Function PCRF, it is characterised in that the PCRF includes:
Message sends trigger module, when the PCRF is located at ownership place, for receiving bearing binding and event reporting function After the message that BBERF, the packet data gateway ePDG of evolution or grouped data network gateway P-GW send, triggering sending module is sent out Deliver letters breath;
Sending module, when the PCRF is located at ownership place, for sending the original relevant with S9 session establishments to visited place PCRF Beginning information;
Receiver module, when the PCRF is located at visited place, is had with S9 session establishments for receiving the ownership place PCRF and sending The raw information of pass;And
Sub- session establishment module, when the PCRF is located at visited place, for according to described relevant with S9 session establishments original Information generates the related information of S9 sessions, and sets up S9 sessions.
7. PCRF as claimed in claim 6, it is characterised in that:The raw information relevant with S9 session establishments includes: ID, PDN link informations, Diameter session identifications, binding session instruction, credit control request type and S9 sessions Set up and indicate;The related information of the S9 sessions include ID, sub- session execution information, Diameter session identifications and Credit control request type.
8. a kind of S9 session establishing methods, it is characterised in that the method is touched by ownership place "Policy and Charging Rules Function PCRF Send out visited place PCRF and set up S9 sessions, including:
Ownership place PCRF generates the related information of S9 sessions, and sends to visited place PCRF when S9 sessions are set up in decision-making The related information of the S9 sessions;
The visited place PCRF is received and is set up S9 sessions according to the related information of the S9 sessions;
Wherein, before the ownership place PCRF sends the related information of the S9 sessions, by bearing binding and event report work( Can BBERF, the triggering of the message of the packet data gateway ePDG or grouped data network gateway P-GW transmission of evolution.
9. method as claimed in claim 8, it is characterised in that:The related information of the S9 sessions is by re-authentication/award Power request RAR message sends.
10. method as claimed in claim 8, it is characterised in that:The related information of the S9 sessions includes ID, son Session execution information, Diameter session identifications and credit control request type.
11. a kind of S9 session building systems, it is characterised in that the system includes:
The sub- session decision-making trigger module of ownership place "Policy and Charging Rules Function PCRF, for receiving bearing binding and thing After the message that part function of reporting BBERF, the packet data gateway ePDG of evolution or grouped data network gateway P-GW send, triggering Sub- session establishment decision-making module carries out decision-making;
The sub- session establishment decision-making module of the ownership place PCRF, for when S9 sessions are set up in decision-making, generating S9 sessions Related information;
The sending module of the ownership place PCRF, for sending the related information of the S9 sessions to visited place PCRF;
The receiver module of the visited place PCRF, for receiving the information of the S9 sessions correlation that the ownership place PCRF sends; And
The sub- session establishment module of the visited place PCRF, for setting up S9 meetings according to the related information of the S9 sessions Words.
12. systems as claimed in claim 11, it is characterised in that:The related information of the S9 sessions include ID, Sub- session execution information, Diameter session identifications and credit control request type.
13. a kind of "Policy and Charging Rules Function PCRF, it is characterised in that the PCRF includes:
Sub- session decision-making trigger module, when the PCRF is located at ownership place, for receiving bearing binding and event report work( After the message that energy BBERF, the packet data gateway ePDG or grouped data network gateway P-GW of evolution send, trigger sub- session and build Vertical decision-making module carries out decision-making;
Sub- session establishment decision-making module, when the PCRF is located at ownership place, for when S9 sessions are set up in decision-making, generating S9 The related information of session;
Sending module, when the PCRF is located at ownership place, for sending the related information of the S9 sessions to visited place PCRF;
Receiver module, when the PCRF is located at visited place, for receiving the S9 sessions correlation of the ownership place PCRF transmissions Information;And
Sub- session establishment module, when the PCRF is located at visited place, for setting up S9 according to the related information of the S9 sessions Sub- session.
14. PCRF as claimed in claim 13, it is characterised in that:The related information of the S9 sessions include ID, Sub- session execution information, Diameter session identifications and credit control request type.
CN201110127341.1A 2011-05-17 2011-05-17 Method and system for establishing S9 subsession and policy and charging rules function (PCRF) CN102791042B (en)

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US10028197B1 (en) 2016-12-30 2018-07-17 Alcatel Lucent S9 roaming session cleanup with S9 connection failure
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