CN105827569A

CN105827569A - Method for providing services for mobile terminal participating in IMS session, device and system

Info

Publication number: CN105827569A
Application number: CN201510005011.3A
Authority: CN
Inventors: 李向阳
Original assignee: Alcatel Optical Networks Israel Ltd
Current assignee: Alcatel Optical Networks Israel Ltd
Priority date: 2015-01-05
Filing date: 2015-01-05
Publication date: 2016-08-03

Abstract

The invention provides a method for providing services for a mobile terminal participating in an IMS session. First equipment comprises application service equipment in an IMS system, or comprises a billing system and the application service equipment. The method comprises the steps of a, receiving position information of the mobile terminal, b, acquiring PRA information of the mobile terminal according to the position information, wherein the PRA information is used for indicating PRA at which the mobile terminal is located at present, and c, providing IMS based application services or IMS based billing services and application services for the mobile terminal according to the PRA information. According to the scheme provided by the invention, application services and/or billing services can be provided for the mobile terminal participating in the IMS session in the IMS system based on the PRA.

Description

The methods, devices and systems of service are provided for participating in the mobile terminal of IMS session

Technical field

The present invention relates to communication technical field, particularly relate to a kind of mobile terminal for participating in IMS session and the methods, devices and systems of service are provided.

Background technology

In prior art, for the IMS session between mobile terminal, it is only capable of using the ULI information of mobile terminal to indicate the current location of mobile terminal；But, after IMS session establishment, once ULI information changes (position that the base station accessed such as mobile terminal changes, mobile terminal is currently located changes), it is accomplished by again reporting ULI information, and, ULI information changes the most frequently, and therefore, the network at mobile terminal place is easy to report continually the ULI information of this mobile terminal；This makes during IMS session, and network needs the ULI information consuming substantial amounts of Internet resources to transmit mobile terminal.

Summary of the invention

It is an object of the invention to provide a kind of mobile terminal for participating in IMS session and the methods, devices and systems of service are provided.

According to an aspect of the present invention, a kind of first device providing service in the first equipment for participating in the mobile terminal of IMS session is provided, wherein, described first equipment includes the application service equipment in IMS system, or include charge system and described application service equipment, this first device includes following device:

First receiving device, for receiving the positional information of described mobile terminal；

Obtaining device, for according to described positional information, it is thus achieved that the PRA information of described mobile terminal, wherein, described PRA information is used for the PRA indicating described mobile terminal currently located；

First provides device, for according to described PRA information, provides application service based on IMS for described mobile terminal, or billing of services based on IMS and application service.

According to another aspect of the present invention, additionally providing a kind of the second device of positional information providing the mobile terminal participating in IMS session in PCRF to the CSCF of IMS system, wherein, this second device includes following device:

3rd receives device, for receiving location information request from CSCF, for described mobile terminal；

Second determines device, for the ULI information according to mobile terminal, determines the positional information of this mobile terminal, and wherein, this positional information includes PRA information；

4th provides device, for described positional information is supplied to described CSCF.

According to a further aspect in the invention, additionally provide a kind of in the CSCF of IMS system transmission participate in the 3rd device of positional information of the mobile terminal of IMS session, wherein, the 3rd device includes following device:

5th receives device, and for receiving the positional information from mobile terminal PCRF, described, wherein, this positional information includes PRA information；

5th provides device, for described positional information is supplied to the first equipment.

According to a further aspect in the invention, additionally provide a kind of method providing service for the mobile terminal of participation IMS session in the first equipment, wherein, described first equipment includes the application service equipment in IMS system, or include charge system and described application service equipment, the method comprises the following steps:

A. the positional information of described mobile terminal is received；

B. according to described positional information, it is thus achieved that the PRA information of described mobile terminal, wherein, described PRA information is used for the PRA indicating described mobile terminal currently located；

C. according to described PRA information, application service based on IMS, or billing of services based on IMS and application service are provided for described mobile terminal.

According to a further aspect in the invention, a kind of method additionally providing positional information that the mobile terminal participating in IMS session is provided in PCRF to the CSCF of IMS system, wherein, the method comprises the following steps:

A. location information request from CSCF, for described mobile terminal is received；

B. according to the ULI information of mobile terminal, determining the positional information of this mobile terminal, wherein, this positional information includes PRA information；

C. described positional information is supplied to described CSCF.

According to a further aspect in the invention, additionally providing a kind of method that transmission participates in the positional information of the mobile terminal of IMS session in the CSCF of IMS system, wherein, the method includes:

-receive the positional information from mobile terminal PCRF, described, wherein, this positional information includes PRA information；

-described positional information is supplied to the first equipment.

According to a further aspect in the invention, additionally providing a kind of communication system, including the first equipment, PCEF and CSCF, described first equipment includes first device of the present invention, described PCRF includes the second device of the present invention, and described CSCF includes the 3rd device of the present invention.

Compared with prior art, the invention have the advantages that 1) PCRF determines the PRA information of mobile terminal according to mobile terminal ULI information, and the positional information including PRA information is supplied to the first equipment via CSCF, thus the PRA concept in LTEEPC can be applied in IMS system, to realize application service based on PRA and/or billing of services in IMS system, and charge system can define wholesale price (rating) and the establishment of counting (counting) based on the charging product that PRA information is different；2) application service is provided and/or during billing of services due to the first equipment for mobile terminal, only need to consider the PRA information of mobile terminal, and PRA information is the most under specific circumstances, during as entered or leaving particular cell group, it is only possible to change, this considerably reduces the quantity of information that network needs to report, and need not relate to substantial amounts of signaling, make IMS conversation procedure only to need spend minimal amount of Internet resources, thus greatly reduce the wasting of resources caused due to a large amount of reporting of ULI information；3) the first equipment can determine the PRA information of mobile terminal according to the ULI information of the mobile terminal from PCRF, thus realize application service based on PRA and/or billing of services in IMS system；4) when the positional information from PCRF and via CSCF transmission to the first equipment includes PRA information and ULI information, first equipment redefines another PRA information according to ULI information, and use PRA information determined by higher first equipment of priority to come for mobile terminal to provide application service and/or billing of services, and this another PRA information is used to cover the original PRA information stored in this PCRF in PCRF；5) when mobile terminal is called, the first equipment can determine the PRA information of mobile terminal according to the ULI information of mobile terminal, thus realize application service based on PRA and/or billing of services in IMS system；6) when mobile terminal moves to new PRA, LTEEPC can report PRA to trigger type information to the first equipment, so that the first equipment determines the PRA information corresponding to this new PRA, and provide application service or billing of services according to newly determined PRA information for mobile terminal；In addition, due to only when mobile terminal moves to new PRA, network just can report PRA to trigger type information, and this makes only to need in IMS conversation procedure to spend minimal amount of Internet resources, thus greatly reduces the wasting of resources caused due to a large amount of reporting of ULI information.

Accompanying drawing explanation

The detailed description that non-limiting example is made made with reference to the following drawings by reading, the other features, objects and advantages of the present invention will become more apparent upon:

The schematic flow sheet that the method serviced is provided for participating in the mobile terminal of IMS session that Fig. 1 is one embodiment of the invention；

The schematic flow sheet that the method serviced is provided for participating in the mobile terminal of IMS session that Fig. 2 is another embodiment of the present invention；

The schematic flow sheet that the method serviced is provided for participating in the mobile terminal of IMS session that Fig. 3 is another embodiment of the present invention；

The schematic flow sheet that the method serviced is provided for participating in the mobile terminal of IMS session that Fig. 4 is another embodiment of the present invention；

The schematic flow sheet that the method serviced is provided for participating in the mobile terminal of IMS session after IMS session establishment that Fig. 5 is one embodiment of the invention；

The structural representation that the system serviced is provided for participating in the mobile terminal of IMS session that Fig. 6 is one embodiment of the invention；

The structural representation that the system serviced is provided for participating in the mobile terminal of IMS session that Fig. 7 is another embodiment of the present invention；

The structural representation that the system serviced is provided for participating in the mobile terminal of IMS session that Fig. 8 is another embodiment of the present invention；

The structural representation that the system serviced is provided for participating in the mobile terminal of IMS session that Fig. 9 is another embodiment of the present invention；

The schematic flow sheet that the method serviced is provided for participating in the mobile terminal of IMS session after IMS session establishment that Figure 10 is one embodiment of the invention；

The system architecture schematic diagram that service is provided for participating in the mobile terminal of IMS session that Figure 11 is one example of the present invention；

The system structure schematic diagram that service is provided for participating in the mobile terminal of IMS session that Figure 12 is another example of the present invention.

In accompanying drawing, same or analogous reference represents same or analogous parts.

Detailed description of the invention

The invention provides a kind of method providing service for the mobile terminal of participation IMS session in the first equipment, wherein, described first equipment includes the application service equipment in IMS system, or includes charge system and described application service equipment, and the method comprises the following steps:

A. the positional information of described mobile terminal is received；

A kind of method that present invention also offers positional information that the mobile terminal participating in IMS session is provided in PCRF to the CSCF of IMS system, wherein, the method comprises the following steps:

C. described positional information is supplied to described CSCF.

Present invention also offers a kind of method that transmission participates in the positional information of the mobile terminal of IMS session in the CSCF of IMS system, wherein, the method includes:

-described positional information is supplied to the first equipment.

Below in conjunction with the accompanying drawings the present invention is described in further detail.

First, the method that the present invention provides service for this mobile terminal as the calling party that mobile terminal is IMS (IPMultimediaSubsystem, IP multimedia system) session is illustratively described below in conjunction with Fig. 1 to Fig. 3.

The schematic flow sheet that the method serviced is provided for participating in the mobile terminal of IMS session that Fig. 1 is one embodiment of the invention.

Wherein, the method of the present embodiment is mainly by mobile terminal, MME (MobilityManagementEntity, mobile management entity), SGW (ServingGateway, gateway), PDN-GW (PacketDataNetworkGateway, packet data gateway), PCRF (PolicyandChargingRulesFunction, strategy and charging rule functions), CSCF (CallSessionControlFunction, CSCF), the first equipment realizes.

Wherein, described MME, SGW, PDN-GW belong to LTE (LongTermEvolution, Long Term Evolution) EPC (EvolvedPacketCore, block core evolution).Wherein, described first equipment includes the application service equipment in IMS system, or includes charge system and described application service equipment.Wherein, described application service equipment is for providing application service based on IMS, such as voice service, Video service, PoC (PushtoTalkOverCellular, Push to talk over Cellular) service, MMTEL (MultiMediaTelephony, mediaphone) etc..Wherein, described charge system provides offline charging (offlinecharging) or online charging (onlinecharging) for the application service being provided application service equipment.Preferably, described CSCF includes P-CSCF (Proxy-CallSessionControlFunction, Proxy Call Session Control Function) and S-CSCF (Serving-CallSessionControlFunction, service call conversation control function)；Those skilled in the art will be understood that described CSCF is not limited to P-CSCF and S-CSCF.

In the present embodiment, described mobile terminal is the calling party of IMS session；Described mobile terminal includes any subscriber equipment that can participate in IMS session in IMS system, it is preferable that described mobile terminal includes but not limited to smart mobile phone, panel computer, PDA etc..

It should be noted that described mobile terminal is only for example, other mobile terminals that are existing or that be likely to occur from now on are such as applicable to the present invention, within also should being included in scope, and are incorporated herein with way of reference.

Method according to the present embodiment includes step S101, step S102, step S103, step S104, step S105, step S106, step S107 and step S108.Preferably, the optional step that dotted line step is the present embodiment shown in Fig. 1.

First, LTEEPC sets up IMS default bearing.

After mobile terminal initiates IMS session, mobile terminal generates SIP (SessionInitiationProtocol, session initiation protocol) and invites, and based on described IMS default bearing, this SIP invitation is routed to CSCF.Preferably, this SIP invites and is routed to P-CSCF.

In step S101, PCRF receives location information request from CSCF, for mobile terminal.

Wherein, described location information request is used for the positional information asking mobile terminal current.Wherein, described position includes geographical position and/or logical place；Described geographical position represents mobile terminal position geographically, such as longitude and latitude, tracing area etc.；Described logical place represents the position relevant with logical definition of mobile terminal, such as PRA information etc..

Preferably, PCRF receives location information request from P-CSCF, for mobile terminal based on Rx interface.

In step s 102, PCRF, according to ULI (UserLocationInformation, the customer position information) information of mobile terminal, determines the positional information of this mobile terminal.

Specifically, PCRF is according to the ULI information of mobile terminal, and combines the pre-defined rule in PCRF, determines this mobile terminal PRA information.

Wherein, described pre-defined rule includes any predetermined rule for determining PRA information based on ULI information.Such as, the pre-defined rule in described PCRF includes rule predetermined in PCRF, determine PRA information according to the ULI information of mobile terminal based on charging or strategy.

Wherein, described ULI information is used for the geographical position indicating mobile terminal currently located；Preferably, described ULI information includes but not limited to the tracing area information etc. that the latitude and longitude information of mobile terminal, mobile terminal are currently located.In the present embodiment, include the PRA information of mobile terminal based on ULI information defined location information；Preferably, described positional information also includes the ULI information of mobile terminal.Wherein, described PRA information is used for the PRA indicating mobile terminal currently located；Preferably, described PRA information includes but not limited to: the identification information of PRA, community (cell) information, GGSN (GatewayGPRSSupportNode, Gateway GPRS Support Node) information, PDN-GW information etc.；Preferably, described PRA is adjacent or non-conterminous tracing area, base station or community form by one group.

Wherein, PCRF can use various ways to obtain the ULI information of mobile terminal.Such as, PCRF by making requests on the ULI information obtaining mobile terminal to MME；The most such as, PCRF receives from SGW or PDN-GW, mobile terminal ULI information.Preferably, PCRF receives the access network information (AccessNetworkInformation, ANI) of mobile terminal, and extracts the ULI information of mobile terminal from access network information.

In step s 103, the positional information of mobile terminal is supplied to CSRF by PCRF.

Preferably, the positional information of mobile terminal is sent to P-CSCF by PCRF.

In step S104, CSCF receives from PCRF, mobile terminal positional information.

Preferably, P-CSCF receives from PCRF, mobile terminal positional information, and sends this positional information to S-CSCF.

In step S105, positional information is supplied to the first equipment by CSCF.

Preferably, the positional information of mobile terminal is sent to application service equipment by S-CSCF.

In step s 106, the first equipment receives from PCRF and sends the positional information to application service equipment via CSCF.

Specifically, when the first equipment only includes application service equipment, application service equipment receives from PCRF and sends the positional information to this application service equipment via CSCF；When the first equipment includes application service equipment and charge system, application service equipment receives from PCRF and sends the positional information to this application service equipment via CSCF, further, this positional information or the information (such as PRA information and/or ULI information) that extracts from this positional information are sent to charge system by application service equipment.Preferably, the positional information of mobile terminal is sent to charge system by application service equipment based on CCR (CreditControlRequest, credit control request) message；Charge system is based on CCA (CreditControlAnswer, Credit Control Answer) message sends response to CCR message to application service equipment, and the relevant setting to IMS session can be carried out by CCA message, PRA is reported to trigger type information etc. by the gateway device in LTEEPC to the first equipment as being arranged in IMS session, wherein, based on CCA message should arrange and can be passed to LTEEPC by application service equipment via CSCF and PCRF, so that gateway device can be set.

In step s 107, the first equipment extracts PRA information from positional information.

Specifically, when the first equipment only includes application service equipment, application service equipment extracts the PRA information of mobile terminal from positional information；When the first equipment includes application service equipment and charge system, application service equipment or charge system extract PRA information from positional information.

Preferably, when the first equipment includes application service equipment and charge system, charge system can send to application service equipment based on the PRA information that IMSRo interface is extracted；Analogously, application service equipment can send to charge system based on the PRA information that IMSRo interface is extracted.

In step S108, the first equipment according to PRA information, provides application service based on IMS for mobile terminal, or billing of services based on IMS and application service.

Specifically, when the first equipment only includes application service equipment, application service equipment provides application service based on IMS according to PRA information for mobile terminal；When the first equipment includes application service equipment and charge system, application service equipment provides application service based on IMS according to PRA information for mobile terminal, and charge system provides billing of services based on IMS according to PRA information for mobile terminal.

Preferably, when the first equipment includes application service equipment and charge system, and CSCF is when including P-CSCF and S-CSCF (illustrate only the first equipment and CSCF in Fig. 1), after step S108, the method for the present embodiment also performs following optional step: application service equipment sends SIP to S-CSCF and invites；S-CSCF sends SIP to the callee of IMS session and invites；Charge system sends sip response to S-CSCF；S-CSCF sends sip response to application service equipment；Application service equipment feeds back sip response to S-CSCF, and S-CSCF sends sip response to P-CSCF；P-CSCF sends Rx message based on Rx interface to PCRF；PCRF sends Rx response based on Rx interface to P-CSCF；The PRA information of mobile terminal is supplied to MME via PDN-GW, SGW by PCRF successively；PCRF sends sip response based on LTEEPC to mobile terminal.

Present invention discover that the IMS session between there is problems in that for mobile terminal in prior art, be only capable of using the ULI information of mobile terminal to indicate the current location of mobile terminal；But, after IMS session establishment, once ULI information changes (position that the base station accessed such as mobile terminal changes, mobile terminal is currently located changes), it is accomplished by again reporting ULI information, and, ULI information changes the most frequently, and therefore, the network at mobile terminal place is easy to report continually the ULI information of this mobile terminal.This makes during IMS session, and network needs the ULI information consuming substantial amounts of Internet resources to transmit mobile terminal.However, it is possible to the most least a portion of ULI information influences whether application service and/or the billing of services that the first equipment provided by mobile terminal, which results in the waste of a large amount of Internet resources；Such as, within certain period, mobile terminal uses HPLMN (HomePublicLandMobileNetwork, ownership Public Land Mobile Network) provide data, services for this mobile terminal, owing to charging regulation for this mobile terminal is fixing in during this, thus LTE network during this period in all ULI information of reporting be all useless.

Additionally, in current agreement, PRA is necessarily limited in LTEEPC use.

Scheme according to the present embodiment, PCRF determines the PRA information of mobile terminal according to mobile terminal ULI information, and the positional information including PRA information is supplied to the first equipment via CSCF, thus the PRA concept in LTEEPC can be applied in IMS system, to realize application service based on PRA and/or billing of services in IMS system, and charge system can define wholesale price (rating) and the establishment of counting (counting) based on the charging product that PRA information is different；In addition, when providing application service and/or billing of services due to the first equipment for mobile terminal, only need to consider the PRA information of mobile terminal, and PRA information is the most under specific circumstances, during as entered or leaving particular cell group, it is only possible to change, this considerably reduce the quantity of information that network needs to report, and need not relate to substantial amounts of signaling so that IMS conversation procedure only needs to spend minimal amount of Internet resources, thus greatly reduces the wasting of resources caused due to a large amount of reporting of ULI information.

The schematic flow sheet that the method serviced is provided for participating in the mobile terminal of IMS session that Fig. 2 is another embodiment of the present invention.Method according to the present embodiment is mainly realized by mobile terminal, MME, SGW, PDN-GW, PCRF, CSCF, the first equipment.In the present embodiment, described mobile terminal is the calling party of IMS session.

Method according to the present embodiment includes step S201, step S202, step S203, step S204, step S205, step S206, step S207, step S208 and step S209.Preferably, the optional step that dotted line step is the present embodiment shown in Fig. 2.

First, LTEEPC sets up IMS default bearing.

After mobile terminal initiates IMS session, mobile terminal generates SIP and invites, and based on described IMS default bearing, this SIP invitation is routed to CSCF.Preferably, this SIP invites and is routed to P-CSCF.

In step s 201, PCRF receives location information request from CSCF, for mobile terminal.

Wherein, the implementation of described step S201 is same or like with the implementation with reference to step S101 described in Fig. 1, does not repeats them here.

In step S202, the ULI information of mobile terminal is supplied to CSCF by PCRF.

Wherein, the implementation of the ULI information that PCRF obtains mobile terminal is described in detail in reference to step S102 of Fig. 1, does not repeats them here.

Preferably, the ULI information of mobile terminal is sent to P-CSCF by PCRF.

In step S203, CSCF receives from PCRF, mobile terminal ULI information.

Preferably, P-CSCF receives from PCRF, mobile terminal ULI information, and sends this ULI information to S-CSCF.

In step S204, the ULI information of mobile terminal is supplied to the first equipment by CSCF.

Preferably, the ULI information of mobile terminal is sent to application service equipment by S-CSCF.

In step S205, the first equipment receives from PCRF and sends the ULI information to application service equipment via CSCF.

Wherein, in step S205, the first equipment receives from PCRF and sends the implementation of ULI information to application service equipment via CSCF, receive from PCRF with the first equipment in step S106 with reference to Fig. 1 and send to the implementation of positional information of application service equipment same or like via CSCF, not repeating them here.

In step S206, the first equipment, according to ULI information, determines the PRA information of mobile terminal.

Specifically, when the first equipment only includes application service equipment, application service equipment, according to ULI information, determines the PRA information of mobile terminal；When the first equipment includes application service equipment and charge system, application service equipment or charge system, according to ULI information, determine the PRA information of mobile terminal.

Wherein, application service equipment is according to the ULI information of mobile terminal, and the pre-defined rule in connected applications service equipment, determines this mobile terminal PRA information；Charge system is according to the ULI information of mobile terminal, and combines the pre-defined rule in charge system, determines this mobile terminal PRA information.It should be noted that the pre-defined rule in application service equipment, the pre-defined rule in charge system and be probably identical with reference to the pre-defined rule in PCRF described in Fig. 1, it is also possible to different.

Preferably, when the first equipment includes application service equipment and charge system, PRA information determined by it can be sent to application service equipment by charge system based on IMSRo interface；Analogously, PRA information determined by it can be sent to charge system by application service equipment based on IMSRo interface.

It should be noted that the example above is only better described technical scheme, rather than limitation of the present invention, those skilled in the art should understand that, any according to ULI information, determine the implementation of the PRA information of mobile terminal, should be included in the scope of the present invention.

In step S207, the first equipment according to PRA information, provides application service based on IMS for mobile terminal, or billing of services based on IMS and application service.

Wherein, the implementation of step S207 is same or like with reference to the implementation of step S108 in Fig. 1, does not repeats them here.

Preferably, when the first equipment includes application service equipment and charge system, and CSCF is when including P-CSCF and S-CSCF (illustrate only the first equipment and CSCF in figure), after step S207, the method of the present embodiment also performs following optional step: application service equipment sends SIP to S-CSCF and invites, and this SIP invites the PRA information including mobile terminal；S-CSCF sends SIP to the callee of IMS session and invites；Charge system sends sip response to S-CSCF；S-CSCF sends sip response to application service equipment；Application service equipment feeds back sip response to S-CSCF, and S-CSCF sends sip response to P-CSCF, and this sip response includes the PRA information of mobile terminal；P-CSCF sends Rx message based on Rx interface to PCRF, and this Rx message includes the PRA information of mobile terminal.

Afterwards, in step S208, PCRF receives from CSCF, mobile terminal PRA information.

Specifically, PCRF receives from P-CSCF, mobile terminal PRA information based on Rx interface.

In step S209, when PCRF does not exist the PRA information of this mobile terminal, the PRA information that PCRF storage receives.

Afterwards, preferably, when the first equipment includes application service equipment and charge system, and (illustrate only the first equipment and CSCF in figure) when CSCF includes P-CSCF and S-CSCF, the method for the present embodiment also performs following optional step: PCRF and sends Rx response based on Rx interface to P-CSCF；The PRA information of mobile terminal is supplied to MME via PDN-GW, SGW by PCRF successively；PCRF sends sip response based on LTEEPC to mobile terminal.

According to the scheme of the present embodiment, the first equipment can determine the PRA information of mobile terminal according to the ULI information of the mobile terminal from PCRF, thus realize application service based on PRA and/or billing of services in IMS system.

The schematic flow sheet that the method serviced is provided for participating in the mobile terminal of IMS session that Fig. 3 is another embodiment of the present invention.

Wherein, the method for the present embodiment is mainly realized by mobile terminal, MME, SGW, PDN-GW, PCRF, CSCF, the first equipment.In the present embodiment, described mobile terminal is the calling party of IMS session.

Method according to the present embodiment includes step S301, step S302, step S303, step S304, step S305, step S306, step S307, step S308, step S309, step S310, step S311, step S312 and step S313.Preferably, the optional step that dotted line step is the present embodiment shown in Fig. 3.

First, LTEEPC sets up IMS default bearing.

In step S301, PCRF receives location information request from CSCF, for mobile terminal.

Wherein, the implementation of described step S301 is same or like with the implementation with reference to step S101 described in Fig. 1, does not repeats them here.

In step s 302, PCRF, according to the ULI information of mobile terminal, determines the positional information of this mobile terminal, and this positional information includes PRA information and ULI information.

Wherein, PCRF, according to the ULI information of mobile terminal, determines that the implementation of the PRA information of this mobile terminal is described in detail in reference to step S102 of Fig. 1, does not repeats them here.

In step S303, the positional information of mobile terminal is supplied to CSCF by PCRF.

In step s 304, CSCF receives from PCRF, mobile terminal positional information.

In step S305, the positional information of mobile terminal is supplied to the first equipment by CSCF.

In step S306, the first equipment receives from PCRF and sends the positional information to application service equipment via CSCF.

Wherein, the implementation of step S306 is same or like with reference to the implementation of step S106 in Fig. 1, does not repeats them here.

In step S307, the first equipment extracts PRA information and ULI information from positional information.

Wherein, in step S307, the first equipment extracts PRA information and the implementation of ULI information from positional information, and with step S107 with reference to Fig. 1, the implementation that the first equipment extracts PRA information from positional information is same or like, does not repeats them here.

In step S308, the first equipment, according to described ULI information, determines another PRA information.

Wherein, in described step S308, the first equipment determines the implementation of another PRA information according to described ULI information, with reference to Fig. 2 step S206 in, first equipment determines that according to ULI information the implementation of the PRA information of mobile terminal is same or like, does not repeats them here.

It should be noted that, due to the pre-defined rule in application service equipment, the pre-defined rule in charge system and it is probably different with reference to the pre-defined rule in PCRF described in Fig. 1, therefore the PRA information that the first equipment determines according to identical ULI information from PCRF according to this another PRA information that ULI information determines is probably different.

In step S309, when from another PRA information of PRA information and this of PCRF different time, this another PRA information as the PRA information of mobile terminal, is performed described step S310 by the first equipment.

In step S310, the first equipment, according to the PRA information of change in step S309, provides application service based on IMS, or billing of services based on IMS and application service for mobile terminal.

Wherein, the implementation of step S310 is same or like with reference to the implementation of step S108 in Fig. 1, does not repeats them here.

In step S311, when from the PRA information of PCRF different from another PRA information determined in step S308 time, this another PRA information is sent to CSCF by the first equipment.

Preferably, the first equipment is invited based on SIP and is sent this another PRA information to CSCF.

Preferably, when the first equipment includes application service equipment and charge system, and CSCF is when including P-CSCF and S-CSCF (illustrate only the first equipment and CSCF in Fig. 3), after step S311, the method for the present embodiment also includes that following optional step: S-CSCF sends SIP to the callee of IMS session and invites；Charge system sends sip response to S-CSCF；S-CSCF sends sip response to application service equipment；Application service equipment feeds back sip response to S-CSCF, and S-CSCF sends sip response to P-CSCF；P-CSCF sends Rx message based on Rx interface to PCRF, and this Rx message includes another PRA information described.

Afterwards, in step S312, PCRF receives from another PRA information described in CSCF, mobile terminal.

Specifically, PCRF receives from another PRA information P-CSCF, mobile terminal based on Rx interface.

In step S313, when having there is the PRA information of mobile terminal in this PCRF, PCRF, according to this another PRA information, updates already present, the PRA information of this mobile terminal.

Afterwards, preferably, when the first equipment includes application service equipment and charge system, and CSCF is when including P-CSCF and S-CSCF (illustrate only the first equipment and CSCF in Fig. 3), the method for the present embodiment also includes that following optional step: PCRF sends Rx response based on Rx interface to P-CSCF；The PRA information of mobile terminal is supplied to MME via PDN-GW, SGW by PCRF successively；PCRF sends sip response based on LTEEPC to mobile terminal.

It should be noted that preferably, when from another PRA information of PRA information and this of PCRF identical time, the method for the present embodiment can no longer perform step S309, step S310, step S311, step S312 and step S313.

Scheme according to the present embodiment, when the positional information from PCRF and via CSCF transmission to the first equipment includes PRA information and ULI information, first equipment redefines another PRA information according to ULI information, and use PRA information determined by higher first equipment of priority to come for mobile terminal to provide application service and/or billing of services, and this another PRA information is used to cover the original PRA information stored in this PCRF in PCRF.

The system architecture schematic diagram that service is provided for participating in the mobile terminal of IMS session that Figure 11 is one example of the present invention.According to this system architecture, IMS system access to LTEEPC.Mobile terminal in this system structure is the initiator of IMS session, and this system architecture can be Fig. 1 to the exemplary architecture of embodiment illustrated in fig. 3, and wherein, label f1 to f8 is for representing that the message in this system architecture flows to；It should be noted that f1 to f6 can have sequencing, and f7 and f8 there is no sequencing.

The schematic flow sheet that the method serviced is provided for participating in the mobile terminal of IMS session that Fig. 4 is another embodiment of the present invention.Method according to the present embodiment is mainly realized by mobile terminal, MME, SGW, PDN-GW, PCRF, HSS, CSCF, the first equipment.In the present embodiment, described mobile terminal is the callee of IMS session.

Method according to the present embodiment includes step S401, step S402, step S403, step S404, step S405, step S406 and step S407.Preferably, the optional step that dotted line step is the present embodiment shown in Fig. 4.

Before step S401, the method for the present embodiment performs following optional step: CSCF and receives and invite from the initiator of the IMS session SIP to mobile terminal；Preferably, S-CSCF receives this SIP invitation.CSCF sends SIP and invites to the first equipment；Preferably, S-CSCF sends this SIP invitation to application service equipment；It is highly preferred that when the first equipment includes application service equipment and charge system, application service equipment also sends CCR message to charge system.

In step S401, the first equipment sends location information request to HSS.

Preferably, when the first equipment includes application service equipment and charge system, charge system location information request is sent to HSS.Such as, charge system sends location information request by Sh interface to HSS.

Then, HSS sends location information request to MME.

Afterwards, MME is according to described location information request, to the ULI information of HSS feedback mobile terminal.

Afterwards, in step S402, the ULI information that MME is fed back by HSS is supplied to the first equipment.

In step S403, the first equipment receives HSS feedback, the ULI information of mobile terminal.

Preferably, when the first equipment includes application service equipment and charge system, in step S401, charge system sends location information request to HSS；In step S402, the ULI information that MME is fed back by HSS is supplied to charge system；In step S403, charge system receives this ULI information.It is highly preferred that ULI information can be transmitted based on IMSRo interface between application service equipment and charge system.

In step s 404, the first equipment, according to the ULI information of mobile terminal, determines the PRA information of this mobile terminal.

Wherein, the implementation of described step S404 is same or like with reference to the implementation of step S206 in Fig. 2, does not repeats them here.

In step S405, the first equipment according to PRA information, provides application service based on IMS for mobile terminal, or billing of services based on IMS and application service.

Wherein, the implementation of step S405 is same or like with reference to the implementation of step S108 in Fig. 1, does not repeats them here.

In step S406, CSCF receives from the first equipment, mobile terminal PRA information, and is supplied to PCRF.

Preferably, the first equipment is invited based on SIP and described PRA information is sent to P-CSCF via S-CSCF, and then, described PRA information is supplied to PCRF based on Rx interface by P-CSCF.

In step S 407, PCRF receives from CSCF, mobile terminal PRA information.

Preferably, PCRF stores this PRA information.

Afterwards, it is preferable that the method for the present embodiment also includes that following optional step: PCRF sends Rx response to CSCF, is properly received with instruction；PCRF sends Gx message to PDN-GW, and this Gx message includes the PRA information of mobile terminal；PDN-GW sends Gx response to PCRF；The PRA of mobile terminal is supplied to MME via SGW by PDN-GW；PCRF sends sip response based on LTEEPC to mobile terminal.

Scheme according to the present embodiment, when mobile terminal is called, the first equipment can ask the ULI information of mobile terminal to HSS, and according to this ULI information, determine the PRA information of mobile terminal, thus in IMS system, realize application service based on PRA and/or billing of services.

The system architecture schematic diagram that service is provided for participating in the mobile terminal of IMS session that Figure 12 is one example of the present invention.According to this system architecture, IMS system access to LTEEPC.Mobile terminal in this system structure is the callee of IMS session, and this system architecture can be the exemplary architecture of embodiment illustrated in fig. 4, and wherein, label F1 to F7 is for representing that the message in this system architecture flows to.

It should be noted that, preferably, when mobile terminal is called and does not determine the PRA information of mobile terminal in the first equipment, PCRF can receive after the Rx message of CSCF, ULI information according to mobile terminal determines the PRA information of mobile terminal, and the positional information including this PRA information is supplied to the first equipment via CSCF, this PRA information is supplied to MME simultaneously.The implementation of this preferred version, with with reference in embodiment illustrated in fig. 1, PCRF determines the PRA information of mobile terminal according to the ULI information of mobile terminal, and the positional information including this PRA information is supplied to the first equipment via CSCF, and this PRA information is supplied to MME implementation is same or like, does not repeats them here.

The schematic flow sheet that the method serviced is provided for participating in the mobile terminal of IMS session that Fig. 5 is another embodiment of the present invention.Method according to the present embodiment is mainly realized by mobile terminal, MME, SGW, PDN-GW, PCRF, HSS, CSCF, the first equipment.In the present embodiment, described mobile terminal can be initiator or the callee of IMS session.It should be noted that the method for the present embodiment performs after IMS session establishment.

Method according to the present embodiment includes step S501, step S502, step S503, step S504, step S505, step S506, step S507, step S508 and step S509.Preferably, the optional step that dotted line step is the present embodiment shown in Fig. 5.

Preferably, before step S501, the method of the present embodiment includes that following optional step: MME sends more new bearer request to PDN-GW, this more new bearer request includes that PRA triggers type information, preferably, this more new bearer request also includes the identification information for indicating the currently located PRA of mobile terminal；PDN-GW sends CCR based on Gx interface request to PCRF, and this CCR request includes that PRA triggers type information, it is preferable that this CCR request also includes described identification information；PCRF is used for responding the CCA message based on Gx interface of CCR request to PDN-GW feedback；PCRF sends RAR (Re-Auth-Request) message to CSCF, and this RAR message includes that PRA triggers type information, it is preferable that this RAR message also includes described identification information；CSCF feeds back RAA (Re-Auth-Answer) message to PCRF, to respond RAR message；It is more newly requested that CSCF sends SIP to the first equipment, and this SIP is more newly requested includes that PRA triggers type information, it is preferable that this SIP is the most newly requested also includes described identification information.

Afterwards, in step S501, the first equipment receives and triggers type information from CSCF, mobile terminal PRA.

Wherein, described PRA triggers type information for indicating mobile terminal to move to new PRA.

Preferably, the first equipment receives more newly requested from the SIP of CSCF, triggers type information to receive from CSCF, mobile terminal PRA.

Preferably, application service equipment receives and triggers type information from S-CSCF, mobile terminal PRA.It is highly preferred that when the first equipment includes application service equipment and charge system, described PRA triggering type information can be supplied to charge system based on IMSRo interface by application service equipment.

In step S502, the first equipment sends location information request to HSS.

Wherein, the implementation of step S502 is same or like with reference to the implementation of step S401 in Fig. 4, does not repeats them here.

Preferably, after step S502, HSS sends location information request to MME, and as new location information, the ULI information that MEE feeds back is supplied to the first equipment.

In step S503, the first equipment receives the new location information of the mobile terminal of HSS feedback.Wherein, this new location information includes the ULI information that mobile terminal is current.

Wherein, the implementation of step S503 is same or like with reference to the implementation of step S403 in Fig. 4, does not repeats them here.

In step S504, this new location information as the positional information of mobile terminal, and is performed following step S505 and step S506 by the first equipment.

In step S505, the first equipment is according to the positional information of mobile terminal, it is thus achieved that the PRA information of mobile terminal.

Wherein, the implementation of described step S505 is same or like with reference to the implementation of step S206 in Fig. 2, does not repeats them here.

In step S506, the first equipment according to PRA information, provides application service based on IMS for mobile terminal, or billing of services based on IMS and application service.

Wherein, the implementation of step S506 is same or like with reference to the implementation of step S108 in Fig. 1, does not repeats them here.

In step s 507, PRA is triggered type information by the first equipment and/or PRA information based on new location information acquisition is supplied to PCRF via CSCF.

Preferably, the first equipment is invited based on SIP and PRA is triggered type information and/or the PRA information that obtains based on new location information sends to S-CSCF.

Wherein, based on for arranging of this IMS session, the first equipment can determine whether that PRA is triggered type information is supplied to PCRF via CSCF.

In step S508, CSCF receives and triggers type information from the first equipment, mobile terminal PRA information and/or PRA, and is supplied to PCRF.

Preferably, S-CSCF receives and triggers type information from the first equipment, mobile terminal PRA information and/or PRA, and based on SIP invitation, described PRA information and/or PRA triggering type information are sent to P-CSCF, more described PRA information and/or PRA triggering type information are sent to PCRF based on Rx interface by P-CSCF.

In step S509, PCRF receives and triggers type information from CSCF, mobile terminal PRA information and/or PRA.

Preferably, PCRF receives based on Rx interface and triggers type information from P-CSCF, mobile terminal PRA information and/or PRA.

Preferably, PCRF storage receives PRA information and/or PRA trigger type information.

Preferably, after step S509, the method for the present embodiment also includes that following optional step: CSCF sends SIP more new information to mobile terminal；First equipment sends the SIP more new information of winding (loopback) to CSCF, and CSCF sends SIP more new information to the opposing party participating in session.It should be noted that CSCF does not has sequencing to step and step S501 of mobile terminal transmission SIP more new information between step S509.

It should be noted that, preferred version as the present embodiment, if after step S501, first equipment has been provided with the ULI information that mobile terminal is current, then the first equipment can directly using this ULI information as the new location information of mobile terminal, and directly perform follow-up step S504, and it is performed without step S502 and step S503 to obtain the new location information of mobile terminal.

Method according to the present embodiment, when mobile terminal moves to new PRA, LTEEPC can report PRA triggering type information to the first equipment, so that the first equipment determines the PRA information corresponding to this new PRA, and is that mobile terminal provides application service or billing of services according to newly determined PRA information；In addition, due to only when mobile terminal moves to new PRA, network just can report PRA to trigger type information, and this makes only to need in IMS conversation procedure to spend minimal amount of Internet resources, thus greatly reduces the wasting of resources caused due to a large amount of reporting of ULI information.

It should be noted that, as a kind of preferred version, when mobile terminal moves to new PRA, PCRF directly can determine the PRA information corresponding to this new PRA according to the ULI information of mobile terminal, and the PRA information corresponding to this new PRA is supplied to the first equipment via CSCF, its specific implementation is same or like with reference to the implementation of similar step in embodiment illustrated in fig. 1, does not repeats them here.

The invention provides a kind of first device that service is provided in the first equipment for participating in the mobile terminal of IMS session, wherein, described first equipment includes the application service equipment in IMS system, or includes charge system and described application service equipment, and this first device includes following device:

Present invention also offers a kind of the second device of positional information providing the mobile terminal participating in IMS session in PCRF to the CSCF of IMS system, wherein, this second device includes following device:

Present invention also offers a kind of in the CSCF of IMS system transmission participate in the 3rd device of positional information of the mobile terminal of IMS session, wherein, the 3rd device includes following device:

The structural representation that the system serviced is provided for participating in the mobile terminal of IMS session that Fig. 6 is one embodiment of the invention.The system of the present embodiment includes mobile terminal, MME, SGW, PDN-GW, PCRF, CSCF, the first equipment.Wherein, described first equipment includes first device, and this first device includes first receiving device 01, obtains device 02 and the first offer device 03；Described first receiving device 01 farther includes the first son and receives device 011.Wherein, described PCRF includes the second device, and this second device includes the 3rd reception device 04, second determines that device 05 and the 4th provides device 06.Described CSCF includes that the 3rd device, the 3rd device include that the 5th reception device 07 and the 5th provides device 08.

In the present embodiment, described mobile terminal is the calling party of IMS session.Wherein, described MME, SGW, PDN-GW belong to LTEEPC.Wherein, described first equipment includes the application service equipment in IMS system, or includes charge system and described application service equipment；Preferably, when described first equipment includes charge system and application service equipment, described charge system and described application service equipment may each comprise the first device described in the present embodiment.Preferably, described CSCF includes P-CSCF and S-CSCF；It is highly preferred that P-CSCF and S-CSCF may each comprise the 3rd device described in the present embodiment.

First, LTEEPC sets up IMS default bearing.

The 3rd reception device 04 of PCRF receives location information request from CSCF, for mobile terminal.

Preferably, the 3rd reception device 04 receives location information request from P-CSCF, for mobile terminal based on Rx interface.

The second of PCRF determines the device 05 ULI information according to mobile terminal, determines the positional information of this mobile terminal.

Specifically, second determines the device 05 ULI information according to mobile terminal, and combines the pre-defined rule in PCRF, determines this mobile terminal PRA information.

Wherein, described ULI information is used for the geographical position indicating mobile terminal currently located；Preferably, described ULI information includes but not limited to the tracing area information etc. that the latitude and longitude information of mobile terminal, mobile terminal are currently located.In the present embodiment, include the PRA information of mobile terminal based on ULI information defined location information；Preferably, described positional information also includes the ULI information of mobile terminal.Wherein, described PRA information is used for the PRA indicating mobile terminal currently located；Preferably, described PRA information includes but not limited to: the identification information of PRA, cell information, GGSN information, PDN-GW information etc.；Preferably, described PRA is adjacent or non-conterminous tracing area, base station or community form by one group.

Wherein, second determines that device 05 can use various ways to obtain the ULI information of mobile terminal.Such as, second determines that device 05 by making requests on the ULI information obtaining mobile terminal to MME；The most such as, second determines that device 05 receives from SGW or PDN-GW, mobile terminal ULI information.Preferably, second determines that device 05 receives the access network information of mobile terminal, and extracts the ULI information of mobile terminal from access network information.

The positional information of mobile terminal is supplied to CSRF by the 4th offer device 06 of PCRF.

Preferably, the 4th device 06 is provided to send the positional information of mobile terminal to P-CSCF.

The 5th reception device 07 of CSCF receives from PCRF, mobile terminal positional information.

Preferably, the 5th reception device 07 of P-CSCF receives from PCRF, mobile terminal positional information, and sends this positional information to S-CSCF.

Positional information is supplied to the first equipment by the 5th offer device 08 of CSCF.

Preferably, the positional information of mobile terminal is sent to application service equipment by the 5th offer device 08 of S-CSCF.

First son of the first equipment receives device 011 and receives from PCRF and send the positional information to application service equipment via CSCF.

Specifically, when the first equipment only includes application service equipment, the first son of application service equipment receives device 011 and receives from PCRF and send the positional information to this application service equipment via CSCF；When the first equipment includes application service equipment and charge system, first son of application service equipment receives device 011 and receives from PCRF and send the positional information to this application service equipment via CSCF, further, the first son of application service equipment receives device 011 and sends this positional information or the information (such as PRA information and/or ULI information) that extracts from this positional information to charge system.Preferably, the positional information of mobile terminal is sent to charge system by the first son reception device 011 of application service equipment based on CCR message；Charge system sends the response to CCR message based on CCA message to application service equipment, and the relevant setting to IMS session can be carried out by CCA message, PRA is reported to trigger type information etc. by the gateway device in LTEEPC to the first equipment as being arranged in IMS session, wherein, based on CCA message should arrange and can be passed to LTEEPC by application service equipment via CSCF and PCRF, so that gateway device can be set.

The acquisition device 02 of the first equipment extracts PRA information from positional information.

Specifically, when the first equipment only includes application service equipment, the device 02 that obtains of application service equipment extracts the PRA information of mobile terminal from positional information；When the first equipment includes application service equipment and charge system, the acquisition device 02 obtaining device 02 or charge system of application service equipment extracts PRA information from positional information.

Preferably, when the first equipment includes application service equipment and charge system, the device 02 that obtains of charge system can send to application service equipment based on the PRA information that IMSRo interface is extracted；Analogously, the device 02 that obtains of application service equipment can send to charge system based on the PRA information that IMSRo interface is extracted.

First offer device 03 of the first equipment according to PRA information, provides application service based on IMS for mobile terminal, or billing of services based on IMS and application service.

Specifically, when the first equipment only includes application service equipment, the first offer device 03 of application service equipment provides application service based on IMS according to PRA information for mobile terminal；When the first equipment includes application service equipment and charge system, first offer device 03 of application service equipment provides application service based on IMS according to PRA information for mobile terminal, and the first offer device 03 of charge system provides billing of services based on IMS according to PRA information for mobile terminal.

Preferably, when the first equipment includes application service equipment and charge system, and CSCF is when including P-CSCF and S-CSCF, after first provides device 03 to perform operation, the scheme of the present embodiment also perform following can selection operation: application service equipment sends SIP to S-CSCF and invites；S-CSCF sends SIP to the callee of IMS session and invites；Charge system sends sip response to S-CSCF；S-CSCF sends sip response to application service equipment；Application service equipment feeds back sip response to S-CSCF, and S-CSCF sends sip response to P-CSCF；P-CSCF sends Rx message based on Rx interface to PCRF；PCRF sends Rx response based on Rx interface to P-CSCF；The PRA information of mobile terminal is supplied to MME via PDN-GW, SGW by PCRF successively；PCRF sends sip response based on LTEEPC to mobile terminal.

Present invention discover that the IMS session between there is problems in that for mobile terminal in prior art, be only capable of using the ULI information of mobile terminal to indicate the current location of mobile terminal；But, after IMS session establishment, once ULI information changes (position that the base station accessed such as mobile terminal changes, mobile terminal is currently located changes), it is accomplished by again reporting ULI information, and, ULI information changes the most frequently, and therefore, the network at mobile terminal place is easy to report continually the ULI information of this mobile terminal.This makes during IMS session, and network needs the ULI information consuming substantial amounts of Internet resources to transmit mobile terminal.However, it is possible to the most least a portion of ULI information influences whether application service and/or the billing of services that the first equipment provided by mobile terminal, which results in the waste of a large amount of Internet resources；Such as, within certain period, mobile terminal uses HPLMN to be that this mobile terminal provides data, services, owing to charging regulation for this mobile terminal interior during this is fixing, therefore LTE network during this period in all ULI information of reporting be all useless.

Additionally, in current agreement, PRA is necessarily limited in LTEEPC use.

Scheme according to the present embodiment, PCRF determines the PRA information of mobile terminal according to mobile terminal ULI information, and the positional information including PRA information is supplied to the first equipment via CSCF, thus the PRA concept in LTEEPC can be applied in IMS system, to realize application service based on PRA and/or billing of services in IMS system, and charge system can define the establishment of wholesale price and counting based on the charging product that PRA information is different；In addition, when providing application service and/or billing of services due to the first equipment for mobile terminal, only need to consider the PRA information of mobile terminal, and PRA information is the most under specific circumstances, during as entered or leaving particular cell group, it is only possible to change, this considerably reduce the quantity of information that network needs to report, and need not relate to substantial amounts of signaling so that IMS conversation procedure only needs to spend minimal amount of Internet resources, thus greatly reduces the wasting of resources caused due to a large amount of reporting of ULI information.

The structural representation that the system serviced is provided for participating in the mobile terminal of IMS session that Fig. 7 is another embodiment of the present invention.System according to the present embodiment includes mobile terminal, MME, SGW, PDN-GW, PCRF, CSCF, the first equipment.Wherein, described first equipment includes first device, and this first device includes first receiving device 01, obtains device 02 and the first offer device 03；Described first receiving device 01 farther includes the first son and receives device 011.Described PCRF includes the second device, and this first device includes that the 3rd reception device 04 and the 4th receives device 09.

In the present embodiment, described mobile terminal is the calling party of IMS session.

First, LTEEPC sets up IMS default bearing.

Wherein, the 3rd implementation receiving device 04 is described in detail in reference to Fig. 6, does not repeats them here.

Afterwards, the ULI information of mobile terminal is supplied to CSCF by PCRF.

Wherein, the implementation of the ULI information that PCRF obtains mobile terminal is described in detail in the implementation determining device 05 with reference to the second of Fig. 6, does not repeats them here.

Preferably, the ULI information of mobile terminal is sent to P-CSCF by PCRF.

CSCF receives from PCRF, mobile terminal ULI information.

The ULI information of mobile terminal is supplied to the first equipment by CSCF.

First son of the first equipment receives device 011 and receives from PCRF and send the ULI information to application service equipment via CSCF.

Wherein, first son receives device 011 and receives from PCRF and send the implementation of ULI information to application service equipment via CSCF, receive from PCRF with receiving device 011 with reference to the first son in Fig. 6 and send to the implementation of positional information of application service equipment same or like via CSCF, not repeating them here.

The acquisition device 02 of the first equipment, according to ULI information, determines the PRA information of mobile terminal.

Specifically, when the first equipment only includes application service equipment, the acquisition device 02 of application service equipment, according to ULI information, determines the PRA information of mobile terminal；When the first equipment includes application service equipment and charge system, the acquisition device 02 obtaining device 02 or charge system of application service equipment, according to ULI information, determines the PRA information of mobile terminal.

Wherein, the device 02 ULI information according to mobile terminal that obtains of application service equipment, and the pre-defined rule in connected applications service equipment, determine this mobile terminal PRA information；The acquisition device 02 of charge system is according to the ULI information of mobile terminal, and combines the pre-defined rule in charge system, determines this mobile terminal PRA information.It should be noted that the pre-defined rule in application service equipment, the pre-defined rule in charge system and be probably identical with reference to the pre-defined rule in PCRF described in Fig. 6, it is also possible to different.

Preferably, when the first equipment includes application service equipment and charge system, PRA information determined by it can be sent to application service equipment by the acquisition device 02 of charge system based on IMSRo interface；Analogously, PRA information determined by it can be sent to charge system by the acquisition device 02 of application service equipment based on IMSRo interface.

First equipment the first offer device 03 according to PRA information, provide application service based on IMS for mobile terminal, or billing of services based on IMS and application service.

Wherein, first offer device 03 implementation described in detail in reference to Fig. 6, do not repeat them here.

Preferably, when the first equipment includes application service equipment and charge system, and CSCF is when including P-CSCF and S-CSCF, after first provides device 03 to perform operation, the scheme of the present embodiment also perform following can selection operation: application service equipment sends SIP to S-CSCF and invites, and this SIP invites the PRA information including mobile terminal；S-CSCF sends SIP to the callee of IMS session and invites；Charge system sends sip response to S-CSCF；S-CSCF sends sip response to application service equipment；Application service equipment feeds back sip response to S-CSCF, and S-CSCF sends sip response to P-CSCF, and this sip response includes the PRA information of mobile terminal；P-CSCF sends Rx message based on Rx interface to PCRF, and this Rx message includes the PRA information of mobile terminal.

Afterwards, the 4th reception device 09 of PCRF receives from CSCF, mobile terminal PRA information.

Specifically, the 4th reception device 09 of PCRF receives from P-CSCF, mobile terminal PRA information based on Rx interface.

When PCRF does not exist the PRA information of this mobile terminal, the PRA information that PCRF storage receives.

Afterwards, it is preferable that when the first equipment includes application service equipment and charge system, and when CSCF includes P-CSCF and S-CSCF, the scheme of the present embodiment also perform following can selection operation: PCRF based on Rx interface to P-CSCF send Rx response；The PRA information of mobile terminal is supplied to MME via PDN-GW, SGW by PCRF successively；PCRF sends sip response based on LTEEPC to mobile terminal.

The structural representation that the system serviced is provided for participating in the mobile terminal of IMS session that Fig. 8 is another embodiment of the present invention.System according to the present embodiment includes mobile terminal, MME, SGW, PDN-GW, PCRF, CSCF, the first equipment.Wherein, described first equipment includes first device, and this first device includes first receiving device 01, obtains device 02, first and provide device 03, first determine that device 10, comparison device 11 and second provide device 12；Described first receiving device 01 farther includes the first son and receives device 011, and described acquisition device 02 farther includes extraction element 021.Described PCRF includes the second device, and this first device includes the 3rd reception device 04, second determines that device the 05, the 4th provides device the 06, the 4th to receive device 09 and updating device 13.Described CSCF includes that the 3rd device, the 3rd device include that the 5th reception device 07 and the 5th provides device 08.

First, LTEEPC sets up IMS default bearing.

The second of PCRF determines the device 05 ULI information according to mobile terminal, determines the positional information of this mobile terminal, and this positional information includes PRA information and ULI information.

Wherein, second determines the device 05 ULI information according to mobile terminal, determines that the implementation of the PRA information of this mobile terminal is described in detail in reference to Fig. 6, does not repeats them here.

The positional information of mobile terminal is supplied to CSCF by the 4th offer device 06 of PCRF.

Preferably, the positional information of mobile terminal is sent to P-CSCF by the 4th offer device 06 of PCRF.

The positional information of mobile terminal is supplied to the first equipment by the 5th offer device 08 of CSCF.

Wherein, the first son receives the implementation of device 011 and is described in detail in reference to Fig. 6, does not repeats them here.

The extraction element 021 of the first equipment extracts PRA information and ULI information from positional information.

Wherein, the extraction element 021 of the first equipment extracts PRA information and the implementation of ULI information from positional information, same or like with the implementation extracting PRA information with reference to the first equipment in Fig. 6 from positional information, does not repeats them here.

The first of first equipment determines that device 10, according to described ULI information, determines another PRA information.

Wherein, the first of first equipment determines that device 10 determines the implementation of another PRA information according to described ULI information, same or like with the implementation of the PRA information determining mobile terminal with reference to the acquisition device 02 of the first equipment in Fig. 7 according to ULI information, do not repeat them here.

It should be noted that, due to the pre-defined rule in application service equipment, the pre-defined rule in charge system and it is probably different with reference to the pre-defined rule in PCRF described in Fig. 6, therefore the PRA information that the first equipment determines according to identical ULI information from PCRF according to this another PRA information that ULI information determines is probably different.

When from another PRA information of PRA information and this of PCRF different time, this another PRA information as the PRA information of mobile terminal, and is triggered the first offer device 03 and performs operation by the comparison device 11 of the first equipment.

The PRA information of change in the operation that first offer device 03 of the first equipment performs according to comparison device 11, for mobile terminal offer application service based on IMS, or billing of services based on IMS and application service.

Wherein, first provides the implementation of device 03 to be described in detail in reference to Fig. 6, does not repeats them here.

When from first, the PRA information from PCRF determines that determined by device 10, another PRA information is different, this another PRA information is sent to CSCF by the second offer device 12 of the first equipment.

Preferably, the second offer device 12 of the first equipment is invited based on SIP and is sent this another PRA information to CSCF.

Preferably, when the first equipment includes application service equipment and charge system, and CSCF is when including P-CSCF and S-CSCF, after second provides device 12 to perform operation, the scheme of the present embodiment also includes following to send SIP to the callee of IMS session and invite by selection operation: S-CSCF；Charge system sends sip response to S-CSCF；S-CSCF sends sip response to application service equipment；Application service equipment feeds back sip response to S-CSCF, and S-CSCF sends sip response to P-CSCF；P-CSCF sends Rx message based on Rx interface to PCRF, and this Rx message includes another PRA information described.

Afterwards, the 4th reception device 09 of PCRF receives from another PRA information described in CSCF, mobile terminal.

Specifically, the 4th reception device 09 of PCRF receives from another PRA information P-CSCF, mobile terminal based on Rx interface.

When having there is the PRA information of mobile terminal in this PCRF, the updating device 13 of PCRF, according to this another PRA information, updates already present, the PRA information of this mobile terminal.

Afterwards, it is preferable that when the first equipment includes application service equipment and charge system, and when CSCF includes P-CSCF and S-CSCF, the scheme of the present embodiment also include following can selection operation: PCRF based on Rx interface to P-CSCF send Rx response；The PRA information of mobile terminal is supplied to MME via PDN-GW, SGW by PCRF successively；PCRF sends sip response based on LTEEPC to mobile terminal.

It should be noted that preferably, when from another PRA information of PRA information and this of PCRF identical time, the comparison device 11, first in the present embodiment provides that device 03, second provides device the 12, the 4th to receive device 09, updating device 13 does not redos.

The system architecture schematic diagram that service is provided for participating in the mobile terminal of IMS session that Figure 11 is one example of the present invention.According to this system architecture, IMS system access to LTEEPC.Mobile terminal in this system structure is the initiator of IMS session, and this system architecture can be Fig. 6 to the exemplary architecture of embodiment illustrated in fig. 8, and wherein, label f1 to f8 is for representing that the message in this system architecture flows to；It should be noted that f1 to f6 can have sequencing, and f7 and f8 there is no sequencing.

The structural representation that the system serviced is provided for participating in the mobile terminal of IMS session that Fig. 9 is another embodiment of the present invention.System according to the present embodiment includes mobile terminal, MME, SGW, PDN-GW, PCRF, HSS, CSCF, the first equipment.Wherein, described first equipment includes first device, and this first device includes first receiving device 01, obtains device 02 and the first offer device 03.Described PCRF includes the second device, and this second device includes the 4th reception device 09.Described CSCF includes that the 3rd device, the 3rd device include the 6th reception device 14.

In the present embodiment, described mobile terminal is the callee of IMS session.

First, the scheme of the present embodiment performs following to receive and invite from the initiator of the IMS session SIP to mobile terminal by selection operation: CSCF；Preferably, S-CSCF receives this SIP invitation.CSCF sends SIP and invites to the first equipment；Preferably, S-CSCF sends this SIP invitation to application service equipment；It is highly preferred that when the first equipment includes application service equipment and charge system, application service equipment also sends CCR message to charge system.

Afterwards, the first equipment sends location information request to HSS.

Then, HSS sends location information request to MME.

Afterwards, the ULI information that MME is fed back by HSS is supplied to the first equipment.

The first receiving device 01 of the first equipment receives HSS feedback, the ULI information of mobile terminal.

Preferably, when the first equipment includes application service equipment and charge system, charge system sends location information request to HSS；The ULI information that MME is fed back by HSS is supplied to charge system；The first receiving device 01 of charge system receives this ULI information.It is highly preferred that ULI information can be transmitted based on IMSRo interface between application service equipment and charge system.

The acquisition device 02 of the first equipment, according to the ULI information of mobile terminal, determines the PRA information of this mobile terminal.

Wherein, described acquisition device 02, according to the ULI information of mobile terminal, determines that the implementation of the PRA information of this mobile terminal is described in detail in reference to Fig. 7, does not repeats them here.

Wherein, first provides the implementation of device 03 to be described in detail with reference in Fig. 6, does not repeats them here.

The 6th reception device 14 of CSCF receives from the first equipment, mobile terminal PRA information, and is supplied to PCRF.

Preferably, the first equipment is invited based on SIP and described PRA information is sent to P-CSCF via the 6th reception device 14 of S-CSCF, and then, described PRA information is supplied to PCRF based on Rx interface by P-CSCF.

The 4th reception device 09 of PCRF receives from CSCF, mobile terminal PRA information.

Preferably, the 4th reception device 09 stores this PRA information.

Afterwards, it is preferable that the scheme of the present embodiment also include following can selection operation: PCRF to CSCF send Rx response, with instruction be properly received；PCRF sends Gx message to PDN-GW, and this Gx message includes the PRA information of mobile terminal；PDN-GW sends Gx response to PCRF；The PRA of mobile terminal is supplied to MME via SGW by PDN-GW；PCRF sends sip response based on LTEEPC to mobile terminal.

The system architecture schematic diagram that service is provided for participating in the mobile terminal of IMS session that Figure 12 is one example of the present invention.According to this system architecture, IMS system access to LTEEPC.Mobile terminal in this system structure is the callee of IMS session, and this system architecture can be the exemplary architecture of embodiment illustrated in fig. 9, and wherein, label F1 to F7 is for representing that the message in this system architecture flows to.

It should be noted that, preferably, when mobile terminal is called and does not determine the PRA information of mobile terminal in the first equipment, PCRF can receive after the Rx message of CSCF, ULI information according to mobile terminal determines the PRA information of mobile terminal, and the positional information including this PRA information is supplied to the first equipment via CSCF, this PRA information is supplied to MME simultaneously.The implementation of this preferred version, with with reference in embodiment illustrated in fig. 6, PCRF determines the PRA information of mobile terminal according to the ULI information of mobile terminal, and the positional information including this PRA information is supplied to the first equipment via CSCF, and this PRA information is supplied to MME implementation is same or like, does not repeats them here.

The structural representation that the system serviced is provided for participating in the mobile terminal of IMS session that Figure 10 is another embodiment of the present invention.System according to the present embodiment includes mobile terminal, MME, SGW, PDN-GW, PCRF, HSS, CSCF, the first equipment.Wherein, described first equipment includes first device, and this first device includes first receiving device 01, obtains device the 02, first offer device the 03, second reception device 15, dispensing device 16 and the 3rd offer device 17；Described first receiving device 01 farther includes the second son and receives device 012 and trigger device 013.Described PCRF includes the second device, and this second device includes the 4th reception device 09.Described CSCF includes that the 3rd device, the 3rd device include the 6th reception device 14.

In the present embodiment, described mobile terminal can be initiator or the callee of IMS session.It should be noted that the scheme of the present embodiment performs after IMS session establishment.

Preferably, before second receives device 15 execution operation, the scheme of the present embodiment can send more new bearer request to PDN-GW by selection operation: MME below performing, this more new bearer request includes that PRA triggers type information, preferably, this more new bearer request also includes the identification information for indicating the currently located PRA of mobile terminal；PDN-GW sends CCR based on Gx interface request to PCRF, and this CCR request includes that PRA triggers type information, it is preferable that this CCR request also includes described identification information；PCRF is used for responding the CCA message based on Gx interface of CCR request to PDN-GW feedback；PCRF sends RAR message to CSCF, and this RAR message includes that PRA triggers type information, it is preferable that this RAR message also includes described identification information；CSCF feeds back RAA message to PCRF, to respond RAR message；It is more newly requested that CSCF sends SIP to the first equipment, and this SIP is more newly requested includes that PRA triggers type information, it is preferable that this SIP is the most newly requested also includes described identification information.

Afterwards, the second reception device 15 of the first equipment receives and triggers type information from CSCF, mobile terminal PRA.

Preferably, the SIP that the second reception device 15 of the first equipment receives from CSCF is more newly requested, triggers type information to receive from CSCF, mobile terminal PRA.

Preferably, the second reception device 15 of application service equipment receives and triggers type information from S-CSCF, mobile terminal PRA.It is highly preferred that when the first equipment includes application service equipment and charge system, described PRA triggering type information can be supplied to charge system based on IMSRo interface by the second reception device 15 of application service equipment.

The dispensing device 16 of the first equipment sends location information request to HSS.

Wherein, dispensing device 16 to send the implementation of location information request to HSS same or like to the implementation of HSS transmission location information request with reference to the first equipment in Fig. 9, do not repeat them here.

Preferably, after dispensing device 16 performs operation, HSS sends location information request to MME, and as new location information, the ULI information that MEE feeds back is supplied to the first equipment.

Second son of the first equipment receives the new location information that device 012 receives the mobile terminal of HSS feedback.Wherein, this new location information includes the ULI information that mobile terminal is current.

Wherein, the implementation that the second son receives device 012 is same or like with the implementation receiving HSS feedback, mobile terminal ULI information with reference to first receiving device in Fig. 9 01, does not repeats them here.

First equipment trigger device 013 using this new location information as the positional information of mobile terminal, and trigger acquisition device 02 and first and provide device 03 to perform operation.

The acquisition device 02 of the first equipment is according to the positional information of mobile terminal, it is thus achieved that the PRA information of mobile terminal.

Wherein, it is thus achieved that the implementation of device 02 according to ULI information with reference to acquisition device 02 in Fig. 7, determines that the implementation of the PRA information of mobile terminal is same or like, do not repeats them here.

PRA is triggered type information by the 3rd offer device 17 of the first equipment and/or PRA information based on new location information acquisition is supplied to PCRF via CSCF.

Preferably, the 3rd offer device 17 of the first equipment is invited based on SIP and PRA is triggered type information and/or the PRA information that obtains based on new location information sends to S-CSCF.

Wherein, based on for arranging of this IMS session, the 3rd offer device 17 of the first equipment can determine whether that PRA is triggered type information is supplied to PCRF via CSCF.

The 6th reception device 14 of CSCF receives and triggers type information from the first equipment, mobile terminal PRA information and/or PRA, and is supplied to PCRF.

Preferably, the 6th reception device 14 of S-CSCF receives and triggers type information from the first equipment, mobile terminal PRA information and/or PRA, and based on SIP invitation, described PRA information and/or PRA triggering type information are sent to P-CSCF, more described PRA information and/or PRA triggering type information are sent to PCRF based on Rx interface by P-CSCF.

The 4th reception device 09 of PCRF receives and triggers type information from CSCF, mobile terminal PRA information and/or PRA.

Preferably, the 4th reception device 09 of PCRF receives based on Rx interface and triggers type information from P-CSCF, mobile terminal PRA information and/or PRA.

Preferably, the 4th reception device 09 storage of PCRF receives PRA information and/or PRA trigger type information.

Preferably, the 4th reception device 09 perform operation after, the scheme of the present embodiment also include following can selection operation: CSCF to mobile terminal send SIP more new information；First equipment sends the SIP more new information of winding to CSCF, and CSCF sends SIP more new information to the opposing party participating in session.It should be noted that there is no sequencing between the operation of each device execution that CSCF is in the operation and the present embodiment of mobile terminal transmission SIP more new information.

It should be noted that, preferred version as the present embodiment, if after second receives device 15 execution operation, first equipment has been provided with the ULI information that mobile terminal is current, then the first equipment can directly using this ULI information as the new location information of mobile terminal, and triggering device directly performs operation, and dispensing device 16 and the second son receive device 012 and are performed without operating the new location information obtaining mobile terminal.

Scheme according to the present embodiment, when mobile terminal moves to new PRA, LTEEPC can report PRA triggering type information to the first equipment, so that the first equipment determines the PRA information corresponding to this new PRA, and is that mobile terminal provides application service or billing of services according to newly determined PRA information；In addition, due to only when mobile terminal moves to new PRA, network just can report PRA to trigger type information, and this makes only to need in IMS conversation procedure to spend minimal amount of Internet resources, thus greatly reduces the wasting of resources caused due to a large amount of reporting of ULI information.

It should be noted that, as a kind of preferred version, when mobile terminal moves to new PRA, PCRF directly can determine the PRA information corresponding to this new PRA according to the ULI information of mobile terminal, and the PRA information corresponding to this new PRA is supplied to the first equipment via CSCF, its specific implementation is same or like with reference to the implementation of similar operations in embodiment illustrated in fig. 6, does not repeats them here.

It should be noted that the present invention can be carried out in the assembly of hardware at software and/or software, such as, each device of the present invention can use special IC (ASIC) or any other similar hardware device to realize.In one embodiment, the software program of the present invention can perform to realize steps described above or function by processor.Similarly, the software program of the present invention can be stored in computer readable recording medium storing program for performing (including the data structure being correlated with), such as, and RAM memory, magnetically or optically driver or floppy disc and similar devices.It addition, some steps of the present invention or function can employ hardware to realize, such as, perform the circuit of each step or function as coordinating with processor.

It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and without departing from the spirit or essential characteristics of the present invention, it is possible to realize the present invention in other specific forms.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is limited by claims rather than described above, it is intended that all changes fallen in the implication of equivalency and scope of claim be included in the present invention.Should not be considered as limiting involved claim by any reference in claim.Furthermore, it is to be understood that " an including " word is not excluded for other unit or step, odd number is not excluded for plural number.In system claims, multiple unit or the device of statement can also be realized by software or hardware by a unit or device.The first, the second word such as grade is used for representing title, and is not offered as any specific order.

Claims

1. the first device that service is provided for participating in the mobile terminal of IMS session in the first equipment, wherein, described first equipment includes the application service equipment in IMS system, or includes charge system and described application service equipment, and this first device includes following device:

First device the most according to claim 1, wherein, described first equipment includes described application service equipment, and described first receiving device includes following device:

First son receives device, for receiving from PCRF and sending the described positional information to described application service equipment via CSCF.

First device the most according to claim 2, wherein, described positional information includes that PRA information and ULI information, described acquisition device include following device:

Extraction element, for extracting described PRA information and ULI information from described positional information；

Wherein, this first device also includes following device:

First determines device, for according to described ULI information, determines another PRA information；

Comparison device, for when described PRA information is different from another PRA information described, using another PRA information described as described PRA information, triggering described first provides device to perform operation.

First device the most according to claim 3, wherein, this first device also includes following device:

Second provides device, for when described PRA information is different from another PRA information described, via CSCF, another PRA information described is supplied to PCRF.

First device the most according to claim 1, wherein, this first device perform after being additionally included in described IMS session establishment operation following device:

Second receives device, triggers type information for receiving the PRA from mobile terminal CSCF, described, and wherein, described PRA triggers type information for indicating described mobile terminal to move to new PRA；

Dispensing device, for sending location information request to HSS；

Wherein, described first receiving device includes following device:

Second son receives device, for receiving the new location information of the described mobile terminal of described HSS feedback；

Trigger device, for providing device to repeat operation as described positional information, triggering acquisition device and first described new location information；

Wherein, this first device also includes following device:

3rd provides device, for described PRA being triggered type information and/or the PRA information that obtains based on described new location information is supplied to PCRF via CSCF.

6. provide second device of positional information for the mobile terminal participating in IMS session in PCRF to the CSCF of IMS system, wherein, this second device includes following device:

Second device the most according to claim 6, wherein, this second device also includes following device:

4th receives device, triggers type information for receiving from PRA information described CSCF, described mobile terminal and/or PRA；

Updating device, for when having there is the PRA information of described mobile terminal in this PCRF, triggering type information according to the described PRA information from mobile terminal CSCF, described and/or PRA, updating the PRA information of mobile terminal already present, described.

8. in the CSCF of IMS system, transmission participates in the 3rd device of positional information for the mobile terminal of IMS session, and wherein, the 3rd device includes following device:

3rd device the most according to claim 8, wherein, the 3rd device also includes following device:

6th receives device, triggers type information for receiving from PRA information the first equipment, described mobile terminal and/or PRA, and is supplied to described PCRF.

The most according to claim 8 or claim 9, the 3rd device, wherein, described CSCF includes P-CSCF and S-CSCF.

11. 1 kinds of methods providing service for the mobile terminal of participation IMS session in the first equipment, wherein, described first equipment includes the application service equipment in IMS system, or includes charge system and described application service equipment, and the method comprises the following steps:

A. the positional information of described mobile terminal is received；

12. methods according to claim 11, wherein, described first equipment includes described application service equipment, and described step a comprises the following steps:

-receive from PCRF and send the described positional information to described application service equipment via CSCF.

The method of 13. 1 kinds of positional informationes that the mobile terminal participating in IMS session is provided to the CSCF of IMS system in PCRF, wherein, the method comprises the following steps:

C. described positional information is supplied to described CSCF.

14. 1 kinds of methods that transmission participates in the positional information of the mobile terminal of IMS session in the CSCF of IMS system, wherein, the method includes:

-described positional information is supplied to the first equipment.

15. 1 kinds of communication systems, including the first equipment, PCRF and CSCF, described first equipment includes the first device as according to any one of claim 1 to 5, described PCRF includes the second device as claimed in claims 6 or 7, and described CSCF includes the 3rd device as according to any one of claim 8 to 10.