CN101212323B - Method and system for providing service to group users in IMS network - Google Patents

Method and system for providing service to group users in IMS network Download PDF

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Publication number
CN101212323B
CN101212323B CN200710129317.5A CN200710129317A CN101212323B CN 101212323 B CN101212323 B CN 101212323B CN 200710129317 A CN200710129317 A CN 200710129317A CN 101212323 B CN101212323 B CN 101212323B
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user
group
cscf
configuration information
control unit
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CN101212323A (en
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施有铸
毛凌志
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN200710129317.5A priority Critical patent/CN101212323B/en
Priority to PCT/CN2007/071240 priority patent/WO2008092355A1/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10Architectures or entities
    • H04L65/1016IP multimedia subsystem [IMS]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10Architectures or entities
    • H04L65/1053IP private branch exchange [PBX] functionality entities or arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066Session management
    • H04L65/1069Session establishment or de-establishment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066Session management
    • H04L65/1083In-session procedures
    • H04L65/1095Inter-network session transfer or sharing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/14Session management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/34Network arrangements or protocols for supporting network services or applications involving the movement of software or configuration parameters 

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Telephonic Communication Services (AREA)

Abstract

The invention discloses a method for providing service for group user by an IP multimedia subsystem (IMS) network, which comprise the steps as follows: preset configuration information of the group user is obtained; conversation routing of the group user is carried out according to the configuration information of the group user. The invention also simultaneously discloses a system for providing service for the group user by the IMS network. By adopting the method and the system, the IMS can be accessed to the group user and service functions such as conversation routing and service triggering can be provided for the group user, which enlarges the application of the IMS network.

Description

The IMS network provides service method and system for group user
Technical field
The present invention relates to third generation network technology, particularly a kind of IMS network provides service method and system for group user.
Background technology
IP Multimedia System (IMS) is the subsystem of a third generation (3G) network of 3rd Generation Partnership Project (3GPP) standard definition, be that 3G network is to realize packet voice and grouped data, provide unified multimedia service and application and the objective network that proposes.
IMS adopts the bearer path of packet data domain as its upper strata control signaling and media delivery, adopt session initiation protocol (SIP) as call control signalling, and cooperate with real-time transport protocol (rtp), RTCP Real-time Transport Control Protocol (RTCP), Session Description Protocol (SDP), real time streaming protocol (rtsp) and name server agreements such as (DNS), finish services such as terminal equipment registration, session route and professional triggering among the IMS jointly.
Fig. 1 is existing IMS network architecture schematic diagram, as shown in Figure 1, the IMS network mainly comprises IMS core net, home subscriber server (HSS)/user's configuration service function (UPSF), application server (AS) and Internet protocol (IP) Access Network, i.e. terminal equipment.
Wherein, the functional entity that the IMS core net mainly comprises is call session control (CSCF) unit, is used for the signaling message of processing controls customer multi-media session.Difference by function, CSCF can be divided into three classes again, be respectively that proxy CSCF (P-CSCF), Interrogating CSCF (I-CSCF) and serving CSCF (S-CSCF): P-CSCF are the Xin Lingdaili entity that terminal equipment inserts the IMS network, all from or the signaling that mails to terminal equipment all need pass through P-CSCF; I-CSCF is mainly used in the position of determining S-CSCF by inquiry HSS/UPSF; S-CSCF is responsible for the session management in the IMS network, promptly is used to finish call session control.
HSS/UPSF is the user data dispensing unit, is used to store user's service related informations such as subscription data, and in the 3GPP structure, the user data dispensing unit is called as HSS, and in the TISPAN framework, the user data dispensing unit is called as UPSF.
AS is used to IMS user that applied business control is provided.In order to make the user insert required business, introduced public service identity (PSI) in the IMS network, in existing SIP signaling, PSI is unified resource sign (URI) or number URI (Tel URI), carry out the business that PSI identified by AS, each PSI is managed by an AS, need not register in the IMS network.
Continuous development along with the IMS technology, the class of business that the IMS network is provided is more and more abundanter, like this, must have increasing network wishes to be linked in the IMS network, enjoy the service that the IMS network is provided, as group's user networks such as IP private telephone exchange (PBX)/enterprise network of future generation (NGCN).
The group user is meant that a group has the user of same alike result, these users have formed a customer group, such as, IP PBX/NGCN is a kind of telephone system of using at enterprise network, can be linked in flexible exchanging network, Public Switched Telephone Network and the Public Land Mobile Nerwork networks such as (PLMN), so that these networks provide service for the enterprises user, as group user, the intranet user has identical home domain, identical service configuration etc.
At present, TISPAN organizes and starts the research that IP PBX/NGCN inserts the IMS network, and defined relevant business demand, as: IMS network need support IP PBX/NGCN identity transmission, need support only to preserve IMS order relations at IP PBX/NGCN to the route of IP PBX/NGCN internal user and IMS, and do not preserve order relations at IP PBX/NGCN internal user etc.
Formulate demand stage but above-mentioned research also only rests on, that is to say, in the research that current TISPAN tissue is carried out, also not with regard to the IMS network how for the intranet user promptly the group user provide service to propose clear and definite solution.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of IMS network to provide service method for group user, makes the IMS network to provide service for group user.
Another object of the present invention is to provide the system of a kind of IMS network for group user provides service, makes the IMS network to provide service for group user.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of IMS network provides service method for group user, may further comprise the steps:
Service call Session Control Unit S-CSCF is to customer data base functional unit send server request for allocation SAR message, and acquisition request group's user configuration information comprises called in the described SAR message or caller intranet user identify label;
Described S-CSCF receives described customer data base functional unit judging that called or dialing user identity mates the server-assignment that sends behind group's user identity and replys SAA message, carries group user configuration information in the described SAA message;
Described S-CSCF carries out group customer service according to the group's user configuration information that obtains to be triggered and/or the session route.
A kind of IMS network comprises service call Session Control Unit and customer data base functional unit at least for group user provides the system of service,
Described service call Session Control Unit is used for the message to customer data base functional unit send server request for allocation SAR, and acquisition request group's user configuration information comprises called in the described SAR message or caller intranet user identify label; Receive described customer data base functional unit judging that called or dialing user identity mates the server-assignment that sends behind group's user identity and replys SAA message, carry group user configuration information in the described SAA message; Carrying out group customer service according to the group's user configuration information that obtains triggers and/or the session route;
Described customer data base functional unit, be used for storage group user configuration information, and when described customer data base functional unit is judged called or during dialing user identity coupling group user identity, sent group's user configuration information to described service call Session Control Unit.
As seen, adopt technical scheme of the present invention, group's subscriber equipment inserts the IMS network by calling conversation control unit and customer data base functional unit, like this, when calling conversation control unit receive from or when mailing to the conversation request of group subscriber equipment, obtain group user configuration information by request customer data base functional unit, and further trigger corresponding group's user conversation route according to group's user configuration information, thereby realized providing service for group user, enlarged the service range of IMS network by the IMS network.
Description of drawings
Fig. 1 is existing IMS network architecture schematic diagram;
Fig. 2 is that system forms structural representation in the embodiment of the invention;
Fig. 3 describes schematic diagram for the UML of public identifier in the embodiment of the invention;
Fig. 4 is a method overview flow chart in the embodiment of the invention;
Fig. 5 is the flow chart of the inventive method first embodiment;
Fig. 6 describes schematic diagram for the UML of Service Profile file in the embodiment of the invention;
Fig. 7 is the flow chart of the inventive method second embodiment.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.
Fig. 2 is that system forms structural representation in the embodiment of the invention, and as shown in Figure 2, this system comprises IMS network 200 and group's subscriber equipment 203, and wherein, IMS network 200 comprises customer data base functional unit 201 and calling conversation control unit 202 at least.
Calling conversation control unit 202, be used to receive and mail to or from the communication request of group's subscriber equipment 203, and, carry out group customer service according to the group's user configuration information that receives and trigger and/or the session route to customer data base functional unit 201 request group user configuration informations.
Customer data base functional unit 201 is used for storage group user configuration information, after the group's user configuration information request that receives from calling conversation control unit 202, sends group's user configuration information to calling conversation control unit 202.
Group's subscriber equipment 203 is used for handling to calling conversation control unit 202 transmission communication request or the next communication request of receipt of call Session Control Unit 202 routes; Group's subscriber equipment 203 can have multiple different physical aspect, as being enterprise network equipment, SIP IAD (AG) equipment, AGCF (AGCF) equipment etc., have SIP client (UA) or sip agent (Proxy) function, further also has conversation control function, the session between can independent process enterprise network internal user.
Calling conversation control unit 202 can link to each other with group's subscriber equipment 203 by the E1 interface, adopts Session Initiation Protocol; When group's subscriber equipment 203 is not supported the Session Initiation Protocol of IMS network, comprise further between calling conversation control unit 202 and the group's subscriber equipment 203 that one is used in the unit of non-Session Initiation Protocol to conversion between Session Initiation Protocol or the various SIP configuration (Profile), as network interworking function (IWF) entity or border intercommunication controlled function (IBCF) entity.
Customer data base functional unit 201 can link to each other with calling conversation control unit 202 and group's subscriber equipment 203 with the E4 interface by E2, and two interfaces all can adopt diameter (Diameter) agreement, and in the present invention, the E4 interface is not necessary.In order to make the IMS network can correctly discern crowd user, group's user profile need be described, in customer data base functional unit 201 with the marker group user identity.Fig. 3 describes schematic diagram for the UML (UML) of public identifier of the present invention, public group's User Identity has been described among the UML of the present invention, it can be the public group of a wildcard user ID (WildcaredPGI) as shown in Figure 3, the wildcard expression formula that is used for all users in the marker group, as, any wildcard form of any SIP URI such as * * * @pbx.china.com or TEL URI, public group's User Identity also can be exactly a customer group identify label, as the enterprise network domain name form of pbx.china.com or the enterprise network exchange form of huawei@pbx.china.com, in addition, further, in total identity property (Identity Type), can increase new classification [PGI] and [coupling PGI (Matched PGI)], be used for user identity in identifying user group identity and the group respectively.
In specific implementation process, public group's User Identity also can identify by multiplexing existing public identifier (Public Identification), such as, as shown in Figure 3, utilize wildcard public service identity (Wildcared PSI) to come the wildcard expression formula of all users in the marker group, increase new classification [PGI] and [Matched PGI] identifying user group's identity and the interior user identity of group respectively equally.
Dispose corresponding group's user configuration information at above-mentioned public group's User Identity in the customer data base functional unit 201, as group's customer service configuration file and group user routing address information.
Fig. 4 is the overview flow chart of method in the embodiment of the invention, as shown in Figure 4, may further comprise the steps:
Step 401: calling conversation control unit is to 201 requests of customer data base functional unit and obtain the group's user configuration information that sets in advance.
Comprise group customer service configuration file and/or group user routing address information in above-mentioned group's user configuration information, can further include group user conversation sign, be used for identifying the session participant and be the group user; Group's user routing address information is exactly public group's User Identity sometimes, as when public group's User Identity at the IMS network when registering; Group's user conversation sign can be an explicit independent identification, also can be an implicit identification, as lies in group customer service configuration file or the group user routing address information.
Step 402: calling conversation control unit 202 is carried out group customer service according to group's user configuration information and is triggered and/or the session route.
Fig. 5 is the flow chart of the inventive method first embodiment, in the present embodiment, calling conversation control unit 20 is I-CSCF and S-CSCF, customer data base functional unit 201 is HSS, group's subscriber equipment 203 is enterprise network Device IP PBX, and the group user is the intranet user, is the called subscriber in the conversation procedure, as shown in Figure 5, may further comprise the steps:
Step 501: conversation request (invite) is sent to objective network I-CSCF.
In the present embodiment, suppose that the called subscriber's that carries in the conversation request identify label is Pbx-User@pbx.china.com, this is an intranet user's internal user identify label.
Step 502:I-CSCF sends location information request (LIR) message to HSS.
Carry called subscriber's identify label Pbx-User@pbx.china.com in this LIR message.
After step 503:HSS receives LIR message, judge at first whether the called subscriber mates group user identity, if coupling, then HSS distributes the S-CSCF of service for it for this conversation request; If not, then carry out respective handling by prior art.
Whether judge that the method whether user identity mates group user identity is: HSS judges whether the User Identity that receives is complementary with the public group's User Identity that sets in advance, as conform to the parametric description of all user's wildcard expression formulas or customer group identify label in the marker group.
Can to be HSS set by way to manage the S-CSCF that is distributed, and also can be that IP-PBX passes through the E4 interface and sets in HSS, can also be that HSS obtains when IMS registers in enterprise network or the current interim selection of HSS.
Step 504:HSS is to I-CSCF loopback location information answer (LIA) message.
Carry the S-CSCF that HSS distributes to conversation request in this LIA message, further, also can also comprise the partial group user configuration information in the message, identify as group's user conversation.
Step 505:I-CSCF sends conversation request to the S-CSCF that distributes.
Carry called intranet user's identify label Pbx-User@pbx.china.com in this conversation request, in addition, can also further carry group user conversation sign, promptly expand sip message and make it to carry group user conversation sign, handle for subsequent voice calls.
Step 506:S-CSCF is to HSS send server request for allocation SAR message, acquisition request group's user configuration information.
Carry called intranet user's identify label Pbx-User@pbx.china.com in this SAR message.
Step 507:HSS judges whether called subscriber's identity mates group user identity, if this called subscriber's identities match of judgment result displays group user identity, then execution in step 508, otherwise, carry out respective handling by prior art.
Deterministic process is identical with deterministic process described in the step 503.
Step 508:HSS replys (SAA) message to the distribution of S-CSCF send server, carries group user configuration information in this SAA message.
Comprise group customer service configuration (Service Profile) file and/or group user routing address information in described group's user configuration information, if actual conditions need, can further include group user conversation sign, be used to identify the session participant and be the group user.
For transmitting above-mentioned group's user configuration information, can expand existing E2 interface Diameter attribute to (AVP), such as, can transmit group user conversation sign by increasing [Group indicates (indicator)] AVP, transmit group user's routing address information by increasing [Group route (route)] AVP.
Transmit the mode of group user configuration information by expanding existing Diameter AVP except above-mentioned, can also transmit described group's user configuration information by [user-data (User-data)] AVP of multiplexing existing Diameter.Fig. 6 describes schematic diagram for the UML of Service Profile file, as shown in Figure 6, can in the Public Identification of Service Profile file, carry public group's User Identity, carry the routing address of group subscriber equipment 203 in the AS address parameter of Service Profile file initial filter criteria (iFC), soon " server name (ServerName) " among the iFC is configured to the routing address of enterprise network equipment.When enterprise network is contracted a plurality of service, the priority of iFC of carrying the routing address of enterprise network equipment is set to minimum, to guarantee that the S-CSCF end is after receiving group user configuration information, can priority treatment enterprise network signing service, such as, when comprising two iFC in the Service Profile file, the priority that is used to represent the iFC of enterprise network signing service (as Ring Back Tone service) is set to represent 0 of high priority, and the priority of iFC of carrying the routing address of enterprise network equipment is set to represent 1 of low priority.
After step 509:S-CSCF received SAA message, the iFC that carries according to ServiceProfile file among [User-data] AVP carried out the business triggering, realizes intranet user's signing service.
In the present embodiment, S-CSCF is that 0 iFC triggering session is to server@homedomain.com according to priority at first, carrying out signing service handles, afterwards again according to the routing address PBX@homedomain.com of the group user routing address information acquisition enterprise network equipment that carries among the iFC of routing address that carries enterprise network equipment or [PBX route] AVP, and then will talk about and route to enterprise network Device IP-PBX.
Step 510:S-CSCF sends conversation request to IP PBX.
Need to prove, above-mentioned S-CSCF obtains the process of group user routing address information to the HSS inquiry, also can in step 502~504, finish in the lump by I-CSCF, such as, the group user routing address information that I-CSCF will obtain is placed among the Request-URI of conversation request, and original called subscriber's identify label is placed in other position such as To header field of conversation request, this conversation request is sent to S-CSCF, thereby S-CSCF handles group user's routing address information accordingly as called; Perhaps, also can in step 509, finish by S-CSCF according to certain application server that iFC triggers, this application server will be placed among the Request-URI of conversation request according to the group user routing address information to HSS inquiry or himself configuration, and original called subscriber's identify label is placed in other position such as To header field of conversation request, this conversation request is returned to S-CSCF, thereby S-CSCF handles group user's routing address information accordingly as called.
In addition, S-CSCF can preserve group user configuration information and corresponding group's user profile (download and preserve) from HSS, S-CSCF carries out to preserve in above-mentioned calling procedure, also can in the IMS registration process, carry out preservation at group's subscriber equipment 203, S-CSCF carries out the step of preserving above-mentioned information and carry out the step of preserving in above-mentioned calling procedure similar in the IMS registration process in enterprise network, repeat no more.Like this, in step 506, when receiving the session of mailing to crowd user, S-CSCF can judge earlier whether the called subscriber is crowd user, if, then directly carry out subsequent treatment, thereby simplify, otherwise carry out the process that sends SRA message to HSS again with the information interactive process between the HSS according to group's user configuration information of preserving.S-CSCF obtain group's user configuration information from HSS after, can and HSS between set up Data Update mechanism, after group's user configuration information of preserving among the HSS upgrades, can be updated to S-CSCF synchronously.
S-CSCF judges that the called subscriber is that crowd user's method is: S-CSCF judges the get on well with others description of user profile of called subscriber's identification identifier, i.e. called subscriber's identify label and public group's User Identity are complementary or S-CSCF judges in the conversation request that receives and carries group user conversation sign etc.S-CSCF carries out and judges that the condition that the sociable user profile of called subscriber's identification identifier is described can be: according to the group's user conversation sign in the conversation request that receives, or according to the parsing to called subscriber's identify label, or unconditional.
In addition and step 505 similar, S-CSCF also can or judge the get on well with others description of user profile of called subscriber's identification identifier according to the group's user configuration information that obtains, and carry the enterprise network session identification in the conversation request of sending, and handles for subsequent voice calls.
Fig. 7 is the flow chart of the inventive method second embodiment, and embodiment illustrated in fig. 5 is the method flow of intranet user during as the callee, and the method flow of present embodiment when being depicted as the intranet user as the calling party as shown in Figure 7, may further comprise the steps:
Step 701: the intranet user sends conversation request to S-CSCF.
Carry the calling subscriber in the header field of the PBX statement sign (P_Asserted_identity) of this conversation request, it is intranet user's identify label, in the present embodiment, suppose that intranet user's identify label is Pbx-User@pbx1.china.com, this is an intranet user's internal user identify label.
Further comprise before this step: IP-PBX obtains the address of S-CSCF by configuration, perhaps obtain the S-CSCF address to the HSS inquiry, again or, IP-PBX sends conversation request to I-CSCF earlier, obtain the S-CSCF address by I-CSCF to the HSS inquiry again, the described process in step 501~505 is similar among this process and the embodiment one, repeats no more.
Further, can also carry group user conversation sign in the conversation request that the intranet user sends, perhaps similar with first embodiment, in conversation request, insert group's user conversation sign by I-CSCF or S-CSCF, handle for subsequent voice calls.
Step 702:S-CSCF sends SAR message, acquisition request group's user configuration information to HSS.
Carry calling subscriber's identify label Pbx-User@pbx1.china.com in this SAR message.
Step 703~705: similar with step 507~509 among first embodiment, wherein, in the step 703, HSS judges user identity, sends group's user configuration information; In the step 704, HSS replys (SAA) message to the distribution of S-CSCF send server, carries group user configuration information in this SAA message; In the step 705, S-CSCF carries out professional the triggering and handles according to the group's customer service configuration file in group's user configuration information.
Step 706:S-CSCF carries out subsequent treatment according to called subscriber's identify label after finishing the calling service triggering.
Equally and first embodiment similar, S-CSCF can preserve group user configuration information and corresponding group's user profile, thereby simplifies with the information interactive process between the HSS, repeats no more.
It is situations of IP PBX that the foregoing description has been described group's subscriber equipment 203, they are equally applicable to group's subscriber equipment of other form, such as, the group user is Centrex user, Centrex user generally has group interior User Identity and the outer user's identify label of group (the public user identity sign of promptly registering) simultaneously in the IMS network, Centrex user can use the user of public user identity sign and enterprise network outside to communicate, use the user of interior User Identity of group and enterprise network inside to communicate, like this, in same enterprise network, Centrex user just can use group interior User Identity to call out mutually with IP PBX user, process description following (not shown):
Step 801:IP PBX user A makes a call to Centrex user B, and called number is that the interior User Identity User-B@pbx1.china.com of the group of Centrex user B and Fig. 7 embodiment are similar, process IP PBX Client-initiated conversation request;
Step 802: and Fig. 5 embodiment is similar, I-CSCF receives this conversation request, obtains the S-CSCF of distribution, group user configuration information of public group's User Identity correspondence that User Identity is complementary in S-CSCF acquisition and called Centrex user's the group;
Step 803:S-CSCF carries out the group's customer service configuration file in group's user configuration information, as iFC, the session request is toggled to the Centrex AS that describes among the iFC, Centrex AS handles the Centrex business, and with the called number in the session request, be the public user identity sign that Request-URI makes Centrex user into,, the session request sent to S-CSCF as User-B@chinamobile.com;
Step 804:S-CSCF receives conversation request, owing to Request-URI changes, thus no longer carry out follow-up iFC, and, promptly carry out the session route according to Centrex user's public user identity sign according to new Request-URI.
Use the process description following (not shown) that User Identity is called out mutually in the group between Centrex user:
Step 901:Centrex user A makes a call to Centrex user B, called number is the interior User Identity User-B@pbx1.china.com of the group of Centrex user B, calling number promptly can be the interior User Identity User-A@pbx1.china.com of the group of Centrex user A, also can be the public user identity sign User-A@chinamobile.com of Centrex user A;
Step 902:P-CSCF receives the conversation request that Centrex user A initiates, if calling number is the public user identity sign User-A@chinamobile.com of Centrex user A, then P-CSCF routes to the S-CSCF that this public user identity is identified at the IMS network registry with the session request; If calling number is the interior User Identity User-A@pbx1.china.com of the group of Centrex user A, then P-CSCF execution and aforementioned S-CSCF similarly handle, obtain group's user configuration information of public group's User Identity correspondence that User Identity is complementary in this group, and according to the group user routing address information in group's user configuration information, it is the S-CSCF address, carry out the route of conversation request, similar with the processing of aforementioned S-CSCF, P-CSCF can preserve public group's User Identity and corresponding group's user configuration information thereof in Centrex user's registration process;
Step 903:S-CSCF receives the conversation request that Centrex user A initiates, if calling number is the public user identity sign User-A@chinamobile.com of Centrex user A, then S-CSCF carries out this public user identity and is identified at the business configuration file that obtains in the registration process, and the session request is toggled to Centrex AS; If calling number is the interior User Identity User-A@pbx1.china.com of the group of Centrex user A, then S-CSCF obtains group's user configuration information of public group's User Identity correspondence that User Identity is complementary in this group, and, the session request is toggled to Centrex AS according to the group's customer service configuration file in group's user configuration information;
Step 904:Centrex AS handles the Centrex business, further, Centrex AS can judge whether the called subscriber is the user in the same enterprise network with the calling subscriber, if, then make the calling number of conversation request be User Identity in the group, if not, the calling number that then makes conversation request is the public user identity sign;
Step 905:Centrex AS sends to S-CSCF with the session request, and S-CSCF routes to I-CSCF with the session request;
After this flow process and above-mentioned step 802 are similar to step 804, repeat no more here.
As seen, adopt technical scheme of the present invention, realized that IMS inserts group's subscriber equipment 203, and the function of services such as session route and professional triggering further is provided for group user, enlarged the range of application of IMS network.
In sum, more than be preferred embodiment of the present invention only, be not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (11)

1. an IP Multimedia System IMS network provides service method for group user, it is characterized in that this method may further comprise the steps:
Service call Session Control Unit S-CSCF is to customer data base functional unit send server request for allocation SAR message, and acquisition request group's user configuration information comprises called in the described SAR message or caller intranet user identify label;
Described S-CSCF receives described customer data base functional unit judging that called or dialing user identity mates the server-assignment that sends behind group's user identity and replys SAA message, carries group user configuration information in the described SAA message;
Described S-CSCF carries out group customer service according to the group's user configuration information that obtains to be triggered and/or the session route.
2. method according to claim 1 is characterized in that, comprises in described group's user configuration information: group user routing address information,
Describedly carry out group user conversation route according to group's user configuration information and be: with described session to described group user routing address route.
3. method according to claim 1 is characterized in that, comprises in described group's user configuration information: group's customer service configuration file,
Describedly carry out group user conversation route according to group's user configuration information and be: the group user routing address route that described session is described in described group's customer service configuration file;
Describedly carry out group customer service according to group's user configuration information and trigger and be: the application server address that described session is described in described group's customer service configuration file triggers.
4. method according to claim 3 is characterized in that, when comprising an above initial filter criteria iFC in the described group customer service configuration file, the priority of describing the iFC of group user routing address is set to minimum.
5. method according to claim 1 is characterized in that, described S-CSCF also comprised before the customer data base functional unit sends SAR message:
Described S-CSCF receives the conversation request message that inquiry service call control unit I-CSCF sends, and carries called intranet user's identify label in the described conversation request message.
6. method according to claim 1 is characterized in that, described S-CSCF also comprised before the customer data base functional unit sends SAR message:
Described S-CSCF receives the conversation request that the intranet user sends, and comprises caller intranet user's identify label in the described conversation request.
7. method according to claim 1 is characterized in that, described S-CSCF also comprised before the customer data base functional unit sends SAR message:
Receive the conversation request of the Centrex user A initiation of agency service Call Control Unit forwarding.
8. method as claimed in claim 7 is characterized in that, also comprises:
Described agency service Call Control Unit receives the conversation request that described Centrex user A initiates, if calling number is the public user identity sign of described Centrex user A, then the session request is routed to the S-CSCF that this public user identity is identified at the IMS network registry.
9. an IMS network comprises service call Session Control Unit and customer data base functional unit at least for group user provides the system of service, it is characterized in that;
Described service call Session Control Unit is used for the message to customer data base functional unit send server request for allocation SAR, and acquisition request group's user configuration information comprises called in the described SAR message or caller intranet user identify label; Receive described customer data base functional unit judging that called or dialing user identity mates the server-assignment that sends behind group's user identity and replys SAA message, carry group user configuration information in the described SAA message; Carrying out group customer service according to the group's user configuration information that obtains triggers and/or the session route;
Described customer data base functional unit, be used for storage group user configuration information, and when described customer data base functional unit is judged called or during dialing user identity coupling group user identity, sent group's user configuration information to described service call Session Control Unit.
10. system according to claim 9 is characterized in that, also comprises:
Described service call control unit also is used to receive the conversation request message that inquiry service call control unit I-CSCF sends, and carries called intranet user's identify label in the described conversation request message; Perhaps
Described service call control unit also is used to receive the conversation request that the intranet user sends, and comprises caller intranet user's identify label in the described conversation request.
11. system according to claim 9 is characterized in that, also comprises:
The agency service Call Control Unit, be used to receive the conversation request that Centrex user A initiates, if calling number is the public user identity sign of Centrex user A, then the session request is routed to the service call Session Control Unit S-CSCF that this public user identity is identified at the IMS network registry;
Described service call control unit also is used to receive the conversation request that described Centrex user A that described agency service Call Control Unit transmits initiates.
CN200710129317.5A 2006-12-25 2007-07-02 Method and system for providing service to group users in IMS network Expired - Fee Related CN101212323B (en)

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