CN101127613A - Method and Application of Acquisition of Circuit Domain Information by IP Multimedia Subsystem Application - Google Patents

Abstract

The invention discloses a method for obtaining circuit domain information by an IP multimedia subsystem application and its application. The application server AS sends a query command to the home subscription server HSS through the Sh interface to query the user circuit domain subscription information; the HSS receives the query command Afterwards, a response message is returned, and the response message carries the CS domain subscription information requested by the AS. Alternatively, the AS sends a subscription request to the HSS through the Sh interface to subscribe to user circuit domain information; the HSS records the subscription relationship and issues a notification message to the AS when the user circuit domain information changes, which carries the user circuit domain information subscribed by the AS. The AS applies the user circuit domain information in the IP multimedia subsystem domain according to the business logic. Utilizing the invention, the AS can obtain the required information of the user in the circuit domain according to the need, so as to meet the requirements of different services.

Description

Method and Application of Acquisition of Circuit Domain Information by IP Multimedia Subsystem Application

technical field

The embodiment of the present invention relates to the technical field of network communication, and specifically relates to a method for obtaining circuit domain information by an IP multimedia subsystem application and an application thereof.

Background technique

IMS (IP Multimedia Subsystem, IP Multimedia Subsystem) is a subsystem that supports IP multimedia services proposed by 3GPP (Third Generation Partnership Projects, Third Generation Partnership Project). The protocol implements functions such as the establishment, maintenance and management of IP multimedia services, allowing operators to quickly and efficiently deploy multimedia services regardless of network access methods and terminal equipment types, and supports fixed networks and 802.11, 802.15, 802.16, CDMA (Code Division Multiple Access) or GSM (Global System for Mobile Communications) Any type of conversation on the wireless network allows service providers to provide users with a series of multimedia services that integrate voice and data.

The system structure of IMS is shown in Figure 1:

Among them, CSCF (Call Session Control Function) entity is used to control functions such as user registration and session control; AS (Application Server) is used to provide various business logic control functions; HSS (Home Subscriber Server) is used to centrally manage user subscription information; The MGCF (Media Gateway Control Function) entity is used to realize the intercommunication with the circuit switching network; the user accesses the IMS through the proxy node P-CSCF (Proxy Call Session Control Function); the session and service trigger control and the service control interaction with the AS are controlled by it The home domain service node S-CSCF (serving call session control function) of the registration place is completed.

The IMS service provisioning architecture is shown in Figure 2:

Among them, HSS is the most important database for each user, which stores all the information related to signing, and is used to support the processing of calls and sessions by various network entities, including: user identification, number and addressing information; user security Information; user's location information and user's description information, etc. A home network can have one or more HSSs, depending on the number of mobile subscribers, capacity of network equipment, and specific networking conditions. HSS provides external business hall interface for user data maintenance (addition, modification, deletion of user subscription information, etc.), and HSS supports Cx interface (interface between HSS and I-CSCF/S-CSCF), Sh interface (HSS and Interface between AS) user data download.

AS provides IP multimedia value-added services for IMS users, which can be located in the user's home network or provided by a third party, including SIPAS, OSAAS (Open Service Access AS, Open Service Access Application Server) and IM-SSF (IP Multimedia Subsystem Switching Function) three categories, among which, OSA AS interacts with IMS network elements directly through OSA service capability server, and IM-SSF provides mapping from IMS SIP to CS CAP (Circuit Switching Capability) circuit domain intelligent application protocol and SSP (Service Switch Point , business switching point) trigger capability, so that IMS domain VoIP service users can seamlessly inherit the circuit domain intelligent services; The Sh interface of the Diameter protocol, and the Si interface based on the MAP (Mobile Application Part, mobile application part) protocol between IM-SSF and HSS.

During the evolution process of the network to the IMS, the CS domain and the IMS domain will inevitably coexist for a period of time. In this case, there will be dual-subscription users who have a contract relationship with both domains. At this time, users hope that there is a control point in the network that can centrally control their services in the two domains to achieve cross-domain service control. In the existing mechanism, the centralized control point is generally located in the IMS network and implemented by an AS.

However, in the prior art, the AS can only obtain limited dynamic information (location information and registration status) and a small amount of subscription information (charging information and mobile subscriber ISDN number MSISDN) of the user in the CS domain through query. Obtaining only this information will make it impossible to meet service requirements in some service applications, and the query efficiency will be low; at the same time, querying circuit domain information during service operations will increase the delay of this service.

Contents of the invention

The technical problem to be solved by the embodiments of the present invention is to enable the Sh interface to support the transmission of user circuit domain information, so that the AS can obtain the required user information in the circuit domain according to needs, so as to meet the needs of different services.

For this reason, the embodiment of the present invention provides following technical scheme:

A method for obtaining circuit domain information by an IP multimedia subsystem application, the method comprising:

The application server AS sends a query command to the home subscription server HSS through the Sh interface to query the CS domain subscription information of the user;

After receiving the query command, the HSS returns a response message, and the response message carries the CS domain subscription information requested by the AS.

A method for obtaining circuit domain information by an IP multimedia subsystem application, the method comprising:

The application server AS sends a subscription request to the home subscription server HSS through the Sh interface, and subscribes to the CS domain information of the user;

The HSS records the subscription relationship, and issues a notification message to the AS when the user circuit domain information changes, which carries the user circuit domain information subscribed by the AS.

A method for applying circuit domain information to an IP multimedia subsystem, said method comprising the steps of:

The application server AS obtains the user circuit domain information from the home subscription server HSS through the Sh interface;

The AS applies the obtained user circuit domain information in the IP multimedia subsystem domain according to the service logic.

It can be seen from the technical solution provided by the embodiment of the present invention that the embodiment of the present invention expands the Sh interface between the AS and the HSS, so that the Sh interface supports the transmission of user circuit domain information, and then enables the AS to obtain the required information as needed. Information about the user in the circuit domain. After the AS obtains the CS domain subscription data information, it can use the information to perform various applications, such as: perform corresponding cross-domain service control in the IMS domain according to the CS domain subscription data, and synchronize the CS domain subscription information and the IMS domain subscription information. Setting, performing applications such as domain selection according to the acquired state information of the CS domain and IMS domain, subscription information, etc. It can be seen that when the user has subscriptions in both the circuit domain and the IMS domain, the IMS application of the present invention can not only obtain the subscription information of the user's IMS domain, but also obtain the subscription information of the user's circuit domain at the same time, so that the IMS application can be used for a certain Some cross-domain service networks can better control services.

Description of drawings

FIG. 1 is a schematic diagram of a system structure of an existing IMS;

FIG. 2 is a schematic diagram of an existing IMS service provision architecture;

Fig. 3 is the implementation flowchart of the first embodiment of the method for obtaining circuit domain information by the IP multimedia subsystem application of the present invention;

Fig. 4 is the implementation flowchart of the second embodiment of the method for obtaining circuit domain information by the IP multimedia subsystem application of the present invention;

FIG. 5 is a flow chart of the implementation of the first embodiment of the method for applying circuit domain information by the IP multimedia subsystem of the present invention;

FIG. 6 is a message interaction flow chart of an embodiment in which the HSS acquires subscriber circuit domain information from the HLR when the HSS and the HLR are located in different physical entities;

FIG. 7 is a flow chart of the implementation of the second embodiment of the method for applying circuit domain information by the IP multimedia subsystem of the present invention;

Fig. 8 is a flow chart of message interaction in the first embodiment of the present invention in which the AS obtains the CS domain user state change notification by means of subscription notification;

Fig. 9 is a message interaction flow chart of the second embodiment in which the AS obtains the CS domain user state change notification by subscribing to the notification method in the present invention;

Fig. 10 is a message interaction flow chart of an embodiment in which the AS obtains the CS domain subscription data of the user through query in the present invention;

Fig. 11 is a flow chart of message interaction in which the AS performs domain selection using user circuit domain information in the present invention;

Fig. 12 is a flow chart of the PN management server querying the HSS for all basic service information subscribed by the user according to the embodiment of the present invention.

Detailed ways

The embodiment of the present invention expands the Sh interface between the AS and the HSS so that it supports the query or subscription of user circuit domain subscription information and the release of notifications. In this way, the AS can query or subscribe to the HSS through the Sh interface to obtain user Circuit domain information. When the AS requests the CS domain subscription information from the HSS through the Sh interface, the HSS provides the CS domain subscription information to the AS according to the request. When the AS subscribes to the user circuit domain information from the HSS through the Sh interface, the HSS will notify the AS of the change event and the user circuit domain information according to the subscription information of the AS after sensing the change of the user circuit domain information.

In order to enable those skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the drawings and implementations.

Those skilled in the art know that in the prior art, the types of CS domain data queried through the Sh interface are very limited, including only location information, registration status, billing information, and MSISDN number, and the AS can only query this part of data , and cannot subscribe to these data.

In view of this situation, the present invention extends the Sh interface so that it supports the query of the HSS by the AS or the transmission of CS domain information of the subscribing user.

With reference to Fig. 3, Fig. 3 is the implementation flow of the first embodiment of the method for obtaining circuit domain information by the IP multimedia subsystem application of the present invention, including the following steps:

Step 301: Extend the Sh interface to support the inquiry of subscriber circuit domain subscription information.

The AS can use the existing Sh-Pull command to query CS domain supplementary service information, and the command includes the MSISDN number of the user to be queried. In addition, a new value needs to be added to the data reference parameter in the existing Sh-Pull command. Each new value corresponds to a CS domain supplementary service information type that the AS needs to query. In this way, when the value of the data reference parameter in the Sh-Pull command sent by the AS is the above-mentioned newly added value, it indicates that what the AS requests to query is the CS domain supplementary service information of the user. In addition, the Sh-Pull command can be further extended by adding the following parameters to the existing Sh-Pull command:

(1) A parameter that identifies the supplementary service information attached to a certain type of basic service requested by the AS in this query operation, and this parameter is used to carry the basic service group code;

(2) A parameter identifying the supplementary service requested by the AS in this query operation, which is used to carry a supplementary service code.

Step 302: The AS sends a Sh-Pull command to the HSS through the Sh interface to query the CS domain subscription information of the user.

In the request, the above two newly added parameters may appear at the same time, or only any one of them may appear, or neither may appear. That is to say, the AS can send the Sh-Pull request to the HSS through the Sh interface in the following situations:

(1) The AS sends a Sh-Pull request containing only the MSISDN number and the data reference parameter to the HSS, and queries all basic services and information about supplementary services attached thereto.

(2) The AS sends a Sh-Pull request including the MSISDN number, the data reference parameter and the basic service group code parameter to the HSS, and queries all supplementary service information attached to the specific basic service group.

(3) The AS sends a Sh-Pull request including the MSISDN number, the data reference parameter and the supplementary service code parameter to the HSS, and queries the specific supplementary service information attached to all basic service groups.

(4) The AS sends a Sh-Pull request including the MSISDN number, the data reference parameter, the basic service group code parameter and the supplementary service code parameter to the HSS, and queries the downlink of the specific basic service group. Specific Supplemental Business Information.

Step 303: The HSS returns a response message after receiving the query command, and carries the CS domain subscription information requested by the AS in the response message.

After receiving the extended query command, the HSS first obtains the subscriber CS domain subscription information from the HLR or an internal HLR subset, and then returns the acquired subscriber CS domain subscription information to the AS. During this process, if the AS and HLR can identify different formats of subscriber circuit domain subscription information, the acquired subscriber circuit domain subscription information needs to be converted into Diameter format before the HSS sends the acquired subscriber circuit domain subscription information to the AS. or XML format.

The process for the HSS to obtain the CS domain subscription information of the user from the HLR will be described in detail later.

The CS domain subscription information that the HSS can acquire from the HLR includes supplementary service information, specifically: service codes of supplementary services, status information of supplementary services, and corresponding group code information of basic services.

Referring to Fig. 4, Fig. 4 is the implementation process of the second embodiment of the method for obtaining circuit domain information by the IP multimedia subsystem application of the present invention, including the following steps:

Step 401: Extend the Sh interface between the AS and the HSS to support subscriber CS domain subscription information and notification release.

Specifically, in the present invention, the Sh interface is extended to support user CS domain user state change notification subscription and notification publishing; in addition, the Sh interface can also be extended to support user CS domain supplementary service information change notification Subscribe and publish notifications. Each of these will be described in detail below.

Those skilled in the art know that in the prior art, the Sh interface does not support the function of subscribing and notifying CS domain information. In the present invention, the Sh interface can be extended, and the existing Sh-Subs-Notif command can be used as the subscription user state change notification message of the circuit domain, so that it can support the function of subscribing to the user state change notification of the circuit domain; in addition, it can also Add new values to the data reference parameter in the existing Sh-Subs-Notif command, and each new value corresponds to a type of user circuit domain supplementary service information that the AS needs to subscribe to, so that it supports circuit domain supplementary service information The subscription notification function. You can further expand the Sh-Subs-Notif command. In addition to adding new values for the data reference parameters, you can also add a new type of parameter. This type of new parameter is used to further identify the data requested by the AS. It can contain two specific parameters:

(1) A parameter identifying the supplementary service information attached to a certain type of basic service requested by the AS in this subscription operation. This parameter is used to carry the basic service group code.

(2) A parameter identifying the supplementary service requested by the AS in this subscription operation, which is used to carry a supplementary service code.

The above two parameters can appear in the Sh-Subs-Notif command at the same time, or only one of them can appear, or neither can appear at the same time.

Step 402: the AS sends a Sh-Subs-Notif request to the HSS through the Sh interface to subscribe to the CS domain information of the user.

The Sh-Subs-Notif request sent by the AS to the HSS can have the following situations:

(1) The AS sends a Sh-Subs-Notif request containing only the MSISDN number and the data reference parameters to the HSS, and subscribes to all basic services and the supplementary service information attached thereto.

(2) The AS sends a Sh-Subs-Notif request including the MSISDN number, the data reference parameter and the basic service group code parameter to the HSS, and subscribes to all supplementary service information attached to the specific basic service group.

(3) The AS sends a Sh-Subs-Notif request including the MSISDN number, the data reference parameter and the supplementary service code parameter to the HSS, and subscribes to the specific supplementary service information attached to all basic service groups.

(4) The AS sends a Sh-Subs-Notif request including the MSISDN number, the data reference parameter, the basic service group code parameter, and the supplementary service code parameter to the HSS, and queries the subscription of the specific basic service group that specific supplemental business information.

Step 403: After receiving the Sh-Subs-Notif request, the HSS records the subscription relationship.

Step 404: The HSS issues a notification message to the AS when the user circuit domain information changes, which carries the user circuit domain information subscribed by the AS.

After the HLR perceives the first attach operation after the user roams or the event that the VLR (Visitor Location Register) clears a user data, it sends a message that the user status changes to the HSS. After receiving the user state change message sent by the HLR, the HSS sends the user state change event and the changed state to the AS according to the subscription relationship.

After the HLR perceives that the VLR sends a message to the HLR to synchronize the updated data or the administrator changes the user supplementary service data through the HLR interface, it sends a message to the HSS that the user supplementary service has changed. After the HSS receives the message that the user's supplementary service has changed sent by the HLR, it sends the status information of the changed supplementary service and the basic service group to the AS according to the subscription relationship.

The present invention expands the Sh interface to support the query or subscription of user circuit domain subscription information and notification release, so that the AS can query or subscribe to the HSS through the Sh interface to obtain user circuit domain information.

Referring to FIG. 5, FIG. 5 shows the implementation process of the first embodiment of the method for applying circuit domain information in the IP multimedia subsystem of the present invention, including the following steps:

Step 501: the AS requests the HSS for subscriber CS domain subscription information through the Sh interface.

The AS can query the HSS for subscriber circuit domain subscription information through the Sh interface, and can also subscribe to the HSS for subscriber circuit domain subscription information through the Sh interface. Which method to use can be determined according to actual needs.

Step 502: The HSS obtains the CS domain subscription information of the user from the HLR according to the request of the AS.

Since the information formats supported by the AS and the HLR are different, the HSS also needs to convert the acquired CS domain subscription information into a Diameter format or an XML format that the AS can recognize.

Step 503: The HSS sends the acquired CS domain subscription information to the AS.

If the HSS receives the query request from the AS, it returns the requested CS domain subscription information to the AS after receiving the request.

If the AS has subscribed to the CS domain subscription information of the user through the Sh interface, when the relevant data subscribed to the AS changes, the HSS sends a message to notify the AS of the change event and the changed CS domain subscription information of the user.

Step 504: the AS applies the obtained user circuit domain information in the IP multimedia subsystem domain according to the service logic.

After the AS obtains the subscription data information in the CS domain, it can apply the information, including but not limited to: perform corresponding cross-domain service control in the IMS domain according to the subscription data in the CS domain, and exchange the subscription information in the CS domain and the IMS domain subscription information. Synchronous setting, domain selection, etc. based on the obtained status information and subscription information of the CS domain and IMS domain.

In the future network evolution process, the HSS and HLR may be located in the same physical entity (HSS embedded HLR subset), or may be established separately, that is to say, they are independent functional entities. Aiming at these two situations, the present invention respectively provides the detailed process for the HSS to obtain the CS domain subscription information of the user from the HLR.

When the HSS is embedded with the HLR subset, the HSS obtains various CS domain subscription information of the user from the HLR through the internal interface. First, the HSS sends a request message to the HLR to query the user's circuit domain information. The message includes the user's MSISDN number, information instructions to be queried, etc.; after receiving the request message, the HLR determines that the MSISDN number exists and returns the user circuit to the HSS according to the request. Domain data information.

When the HSS and the HLR are located in different physical entities, the HSS obtains various CS domain subscription information of the user from the HLR through an external interface. For specific implementation, the following methods can be adopted:

(1) The HSS intercepts the request sent to the HLR and the response messages sent by all HLRs through signaling interception, and obtains the subscriber circuit domain subscription information inside the HLR according to the relationship between the request and the response;

(2) The HSS, as the service control point SCP, obtains the subscriber circuit domain subscription information from the HLR through an inquiry method;

(3) The HSS, acting as the SCP, obtains the user's CS domain subscription information from the HLR through subscription notification.

Figure 6 is a message interaction process of an embodiment in which the HSS acquires subscriber circuit domain information from the HLR when the HSS and the HLR are located in different physical entities:

61. The HSS sends ATSI commands (for WCDMA networks) or Service Request (Service Request) messages (for CDMA networks) to the HLR as needed, requesting to query subscriber CS domain data;

62. After the HLR receives the request to determine the existence of the MSISDN number, it determines whether the requested data is valid;

63. If the data requested in 62 is valid, the HLR returns the CS domain data information, otherwise, returns an error response.

Referring to FIG. 7, FIG. 7 shows the implementation process of the second embodiment of the method for applying circuit domain information in the IP multimedia subsystem of the present invention, including the following steps:

Step 701: the AS subscribes to the user circuit domain information from the HSS through the Sh interface.

Step 702: The HSS senses that the CS domain information of the user changes.

The user circuit domain information includes: user circuit domain subscription data, and/or user registration status, location information and other data. The HSS can sense the change of the CS domain information in the following ways:

When HSS is embedded with HLR subset, HLR unconditionally notifies HSS of the event through internal interface when it finds that subscriber circuit domain information changes;

When the HSS and the HLR are located in different physical entities, the HSS senses changes in the CS domain information of the subscriber from the HLR through an external interface. Specifically, the HSS can intercept the request sent to the HLR and the response messages sent by all HLRs through signaling interception, and obtain the changed user circuit domain information inside the HLR according to the relationship between the request and the response; or the HSS can be used as a service control point The SCP perceives the change of the CS domain information of the subscriber from the HLR by means of subscribing to the notification, and obtains the changed CS domain information of the subscriber. The interface between SCP and HLR can be extended, so that HSS/SCP can subscribe data to HLR, including but not limited to CSI (Camel Subscription Information, smart contract information), CB (Call Barring, call blocking), CF (Call Forwarding, call Forward) and other data.

Step 703: The HSS notifies the AS of the change event and the changed CS domain information to the AS according to the subscription information of the AS.

Step 704: The AS applies the obtained user circuit domain information in the IP multimedia subsystem domain according to the service logic.

After the AS obtains the subscription data information in the CS domain, it applies the information. The applications that can be performed include but are not limited to: performing corresponding cross-domain service control in the IMS domain according to the subscription data in the CS domain; Synchronous setting, domain selection, etc. based on the obtained status information and subscription information of the CS domain and IMS domain.

Fig. 8 is the message interaction process of the first embodiment in which the AS obtains the CS domain user state change notification by subscribing to the notification method in the present invention:

81. The AS sends a Sh-Subs-Notif request to the HSS to subscribe to the user state change notification of the user in the circuit domain. The parameters in the request include: MSISDN, DataReference (value user state UserState), Requested-Domain (value circuit domain CS Domain);

82. The HSS returns a subscription success response Sh-Subs-Notif-Rsp to the AS;

83. Because the terminal has not contacted the network for a long time or other reasons, the VLR deletes the user data and sends a message to notify the HLR. The message name in the WCDMA network is MAP_Purge_MS, and in the CDMA network, the message name of the same function is MS Inactive;

84. The HLR sets the user's MNRF (Mobile Station Not Reachable Flag) to true, and notifies the HSS of this event;

85. HLR returns Purge response message MAP_Purge_MS-Rsp to VLR, in CDMA network, the message name with the same function is MS Inactive Rsp;

86. The HSS sends a notification message Sh-Notif to the AS to inform the user that the state of the circuit domain has changed. The message includes the user's MSISDN number, the state after the change, and the value of the state as NetworkDeterminedNotReachable;

87. The AS responds to the return notification with a Sh-Notif-Rsp message.

In this embodiment, the VLR causes the user status to change by clearing the user. The process of other similar users attaching for the first time after the location update causes data changes in the HLR and then notifies the AS is similar to the above, and will not be repeated here.

Fig. 9 is the message interaction flow of the second embodiment in which the AS obtains the CS domain user state change notification by means of subscription notification in the present invention:

In this embodiment, the AS queries the CS domain supplementary service status and subscribes to the information, the user modifies the supplementary service information through the terminal, and the HSS notifies the AS of the new supplementary service status information.

91. The AS sends a Sh-Pull request to the HSS to query the supplementary service information of the user in the circuit domain. The parameters in the request include: MSISDN, DataReference (indicates that it is supplementary service information when it is a new value), ServiceCode (new parameters, The value is the supplementary business code of the query);

92. The HSS forwards the message to the internal HLR, and the HLR checks whether the MSISDN exists. If it exists, the HLR organizes the data that needs to be returned and forwards it to the HSS;

93. The HSS returns the query response message Sh-Pull-Rsp to the AS, including the supplementary service code, the four status values of the supplementary service, and the basic service group (Basic Service Group) corresponding to the supplementary service;

94. The AS sends a Sh-Subs-Notif message to the HSS to subscribe to the user's supplementary service information change notification in the circuit domain. The parameters in the request include: MSISDN, DataRefirence (the new value indicates that it is supplementary service information), ServiceCode (A new parameter, the value is the supplementary business code of the query);

95. HSS returns a successful subscription response Sh-Subs-Notif-Rsp;

96. The user activates the supplementary service through terminal operations. The figure shows the message Activate_SS in the WCDMA network, and the name of the message with the same function in the CDMA network is Feature Request;

97. After the VLR modifies the local supplementary service information, it sends a message to the HLR to request a synchronous data update operation. The message MAP_Activate_SS in the WCDMA network is shown in the figure, and the name of the message with the same function in the CDMA network is Feature Request;

98-99. HLR updates data and returns a response to VLR, wherein step 99 shows the message MAP_Activate_SS_Rsp in the WCDMA network, and the name of the message with the same function in the CDMA network is featreq;

910. The HLR notifies the HSS of a change in the supplementary service information through the internal interface, and the HSS issues a notification to the AS through the Sh interface. The message includes the MSISDN, the supplementary service code, the changed supplementary service status information, and the Basic Service Group (Basic Service Group);

911. The AS returns a notification response Sh-Notif-Rsp to the HSS.

Implementation of other similar administrators changing subscriber CS domain data in MSC/VLR (Mobile Service Switching Center/Visitor Location Register), HLR operation interface, or user CS domain data changing in HLR through terminal operation, AS subscription to obtain data notification The process is similar to the above and will not be listed here.

Fig. 10 is a message interaction process of an embodiment in which the AS obtains the CS domain information of the user by querying in the present invention:

In this embodiment, the AS queries the CS domain supplementary service information, the administrator modifies the supplementary service information through the HLR business hall, and the AS queries again to obtain the latest data.

101. The AS sends a Sh-Pull request to the HSS to query the supplementary service information of the user in the circuit domain. The parameters in the request include: MSISDN, DataReference (indicating that it is supplementary service information for the newly added value), and there is no supplementary service code, indicating that it is necessary to The query is all supplementary business information of the user;

102. The HSS forwards the message to the internal HLR, and the HLR checks whether the MSISDN exists. If it exists, the HLR organizes the data that needs to be returned and forwards it to the HSS;

103. The HSS returns a query response message Sh-Pull-Rsp to the AS, which includes each supplementary service code signed by the user, the four status values of each supplementary service, and the corresponding basic service group (BasicService Group) of each supplementary service;

104. The administrator changes one or more supplementary business information of the user through the operation of the business hall provided by the HLR;

105-106. HLR sends a message to VLR to perform data synchronization operation, and VLR returns a successful response. The figure shows the messages MAP_nsert_Subscriber_Data and MAP_Insert_Subscriber_Data_Rsp in the WCDMA network, and the names of the messages with the same function in the CDMA network are QUALDIR and qualdir;

107. The AS sends a Sh-Pull request to the HSS again to query the supplementary service information of the user in the circuit domain. The parameters in the request include: MSISDN, DataReference (indicating that it is supplementary service information for newly added values), and there is no supplementary service code, indicating that What is to be queried is all the supplementary business information of the user;

108. The HSS forwards the message to the internal HLR, and the HLR checks whether the MSISDN exists. If it exists, the HLR organizes the data that needs to be returned and forwards it to the HSS;

109. The HSS returns a query response message Sh-Pull-Rsp to the AS, which includes the latest data after modification, each supplementary service code signed by the user, the four status values of each supplementary service, and the basic service group corresponding to each supplementary service ( Basic Service Group).

Other similar administrators change the subscriber CS domain data on the MSC/VLR, or the subscriber CS domain data in the HLR changes through terminal operations. The implementation process of AS querying and obtaining data is similar to the above, and will not be listed here.

As mentioned above, after the AS obtains the CS domain subscription data information, it can apply the information, including: corresponding cross-domain service control in the IMS domain according to the CS domain subscription data, CS domain subscription information and IMS domain subscription Information synchronization setting, domain selection, etc., based on the obtained status information and subscription information of the CS domain and the IMS domain. The following example illustrates this.

Referring to Fig. 11, Fig. 11 shows the message interaction flow of the AS using the user circuit domain information to select the domain in the present invention:

111. The AS sends a Sh-Subs-Notif message to the HSS to subscribe to the user's registration status and service subscription information in the circuit domain and IMS domain;

112. The HSS responds to the AS with a subscription response message Sh-Subs-Notif-Rsp;

113. The administrator sets up the circuit domain forwarding service for users through the business hall;

114-115. The HSS senses that the user's circuit domain service subscription has changed, and notifies the AS of the event and the latest data;

116. The dual-signed user receives a new session request INVITE in its home IMS domain;

117. The S-CSCF triggers the application server AS by detecting the user's IFC (Initial Filter Criteria, initial filter rule);

118. The AS performs domain selection based on the locally saved user information and business logic: the AS judges based on the locally saved user data and finds that the user is currently not registered in the IMS domain or the CS domain, but has only subscribed to the forwarding service in the CS domain. Then the AS performs domain selection and decides to connect the call to the circuit domain for processing, so that the user can still receive the incoming call in the circuit domain, improving user experience;

119. The AS returns the redirected circuit domain forwarding number CFN to the S-CSCF;

1110. The S-CSCF forwards the session request to a finally selected MGCF (Media Gateway Control Function);

1111. The MGCF sends an incoming request to the gateway office GMSC (Gateway Mobile Switching Center) where the forwarding party is located according to the number analysis;

1112. The GMSC requests the HLR where the forwarding party is located to obtain the routing information of the user, wherein the message SRI (Send Routing Info) in the WCDMA network is shown in the figure, and the name of the message with the same function in the CDMA network is locreq( location request, location request);

1113-1114. HLR requests the end office VMSC (Visited Mobile Service Switching Center) where the forwarding party user is located to obtain roaming number information. The figure shows the message PRN (Provide Roaming Number) in the WCDMA network. The names of messages with the same function in the network are ROUTREQ and routreq (routing request, routing request);

1115-1116. According to the acquired roaming number, the GMSC routes to the end office where the forwarding party is currently roaming, initiates an incoming request, and then completes the circuit domain call establishment part. Step 1115 in the figure shows the message SRI in the WCDMA network , the name of the message with the same function in the CDMA network is locreq. Step 1116 shows the message IAM (Initial Address Message, Initial Address Message) in the WCDMA network, and the messages with the same function in the CDMA network have the same name.

This embodiment only exemplifies the application of domain selection after the AS obtains the CS domain information. The applications that the AS can perform after obtaining the CS domain information include not limited to synchronous setting of the CS domain subscription information and IMS domain subscription information, Subscription information performs corresponding cross-domain service control, etc., and the detailed process will not be described here.

Referring to FIG. 12 , FIG. 12 is a flow of the PN management server querying the HSS for all basic service information subscribed by the user according to the embodiment of the present invention.

In this embodiment, the user equipment (PNM UE) that has subscribed to the personal network service initiates the process of active activation, which mainly includes the following steps:

1201. The PNM UE in the CS domain sends a request to the HSS through the VMSC/VLR (Visited Mobile Services Switching Center/Visitor Location Register) route to query the activation configuration information in the current PN, and the request carries the MSISDN to be queried.

1202. The HSS routes the registration request to the corresponding PNM server according to the stored USSD (Unstructured Supplementary Services Data) Camel subscription information U-CSI (USSD service smart user subscription information).

1203-1204. The PNM server returns the query result according to the locally saved activation configuration information.

The above steps 1 to 4 are optional, and the user is allowed but not forced to query the current configuration.

1205-1206. The UE in the CS domain sends an activation request to the HSS through the VMSC/VLR route, and the request includes: IMSI, MSISDN, activation type, priority parameters, etc. The HSS forwards the request to the PNM server according to the saved U-CSI information, and the activation type is global activation.

1207. The PNM server checks whether the UE has registered in the PN by searching whether there is an IMSI-MSISDN record locally.

1208-1209. Since the PNM server is both the AS in the IMS domain and the gsmSCF in the CS domain in the PNM service, the PNM server can use the Sh-Pull message of the Sh interface to send a request to the HSS to query the basic service information subscribed by the user, where Sh- The Pull message includes a parameter MSISDN and a data reference parameter, and the value of the data reference parameter is a newly added value representing basic service information of the circuit domain.

After receiving the Sh-Pull message, the HSS returns the service codes of all the basic services subscribed by the MSISDN. If the MSISDN does not subscribe to any basic services, it returns an error or empty data.

1210-1211. The PNM server acquires the capability information of the activated UE from the entity storing the UE capability information.

1212. The PNM server compares the capability information and subscription information of the UE to be activated with the capabilities required by the redirected service, and if the service requirements can be met, the UE is considered to be successfully activated for the service.

1213. The PNM server subscribes the CS domain information change notification of the MSISDN to the HSS. When the CS domain information of the MSISDN changes, the HSS needs to notify the PNM server, and the PNM server compares and judges whether to change the activation setting.

Among them, since the PNM server in the PNM service is both the AS in the IMS domain and the gsmSCF in the CS domain, the PNM server can use the Sh-Subs-Notif message of the Sh interface to send the basic service information requesting subscription users to the HSS, where Sh- The Subs-Notif message includes a parameter MSISDN and a data reference parameter, and the value of the data reference parameter is a newly added value representing basic service information in the CS domain.

After receiving the Sh-Subs-Notif message, if the PNM server is allowed to subscribe to the information, the HSS will save the subscription relationship, and then send a message to notify the PNM server when the basic service subscribed by the user changes.

1214-1215. The HSS returns an activation response to the UE, indicating whether the activation operation is successful. Here, it is allowed to activate some services that are globally activated. Therefore, when successful, the activation response message needs to carry the successfully activated service code and MSISDN.

If the Sh-Pull request sent by the PNM server in step 8 above includes a specific basic service code in addition to the MSISDN number and data reference parameters, it means that the PNM server is inquiring about the subscription status of the user for this specific basic service, and the HSS receives If the user subscribes to the basic service after receiving the query request, the basic service code will be returned in step 9, and an error or empty data will be returned if there is no subscription.

While the invention has been described by way of example, those skilled in the art will appreciate that there are many variations and changes to the invention without departing from the spirit of the invention, and it is intended that the appended claims cover such variations and changes without departing from the spirit of the invention.

Claims (31)

1. an IP Multimedia System is used the method for acquisition cuicuit domain information, it is characterized in that described method comprises:

Application server AS sends querying command, inquiring user circuit domain CAMEL-Subscription-Information by Sh interface to home subscribed services device HSS;

HSS returns response message after receiving described querying command, and carries AS requesting users circuit domain CAMEL-Subscription-Information in this response message.

2. method according to claim 1 is characterized in that, described method also comprises:

Data refer parameter among the existing querying command Sh-Pull is increased new value, and new value shows the subscriber line circuit territory CAMEL-Subscription-Information type that AS will inquire about.

3. method according to claim 2 is characterized in that, the newly-increased data refer parameter value of described Sh-Pull order shows when the subscriber line circuit territory CAMEL-Subscription-Information of AS inquiry is supplementary service information, also comprises:

Increase the parameter of the supplementary service information of hanging under a certain class basic service of this query manipulation of sign AS request in existing querying command Sh-Pull, this parameter is used to carry basic service group code; And/or

Increase the parameter of the supplementary service of this query manipulation of sign AS request in existing querying command Sh-Pull, this parameter is used to carry Supplementary Service Code.

4. method according to claim 3 is characterized in that, AS comprises to the step that HSS sends the querying command of expansion by Sh interface:

AS sends the Sh-Pull request that comprises Mobile Subscriber International ISDN Number, described data refer parameter and described basic service set code parameters to HSS, inquires about all supplementary service information of hanging under this specific basic service set; Perhaps

AS sends the Sh-Pull request that comprises Mobile Subscriber International ISDN Number, described data refer parameter and described supplementary service code parameters to HSS, inquires about this specific supplemental business information of hanging under all basic service set; Perhaps

AS sends the Sh-Pull request that comprises Mobile Subscriber International ISDN Number, described data refer parameter, described basic service set code parameters and described supplementary service code parameters, this specific supplemental business information of inquiring about the following extension of hanging under this specific basic service set to HSS.

5. method according to claim 2 is characterized in that, AS comprises to the step that HSS sends the querying command of expansion by Sh interface:

It is the Sh-Pull request of the newly-increased data refer parameter of supplementary service information that AS sends the subscriber line circuit territory CAMEL-Subscription-Information that only comprises Mobile Subscriber International ISDN Number and described expression AS request inquiry to HSS, the supplementary service information of inquiring about all basic services and hanging down.

6. method according to claim 2 is characterized in that, when the newly-increased data refer parameter value of described Sh-Pull order shows that the subscriber line circuit territory CAMEL-Subscription-Information of AS inquiry is basic service information, also comprises:

Increase the parameter of the basic service information of this query manipulation of sign AS request in existing querying command Sh-Pull, this parameter is used to carry basic service code; Perhaps

It is the Sh-Pull request of the newly-increased data refer parameter of basic service information that AS sends the subscriber line circuit territory CAMEL-Subscription-Information that only comprises Mobile Subscriber International ISDN Number and expression AS request inquiry to HSS, all basic service information that inquiring user is signatory.

7. method according to claim 1 is characterized in that, described HSS receives that the step of returning response message behind the described querying command comprises:

After HSS receives the querying command of described expansion, obtain subscriber line circuit territory CAMEL-Subscription-Information from attaching position register HLR or inner HLR subclass;

HSS returns to AS with the subscriber line circuit territory CAMEL-Subscription-Information that obtains.

8. method according to claim 7 is characterized in that, described HSS comprises from the step that HLR obtains subscriber line circuit territory CAMEL-Subscription-Information:

When HSS and HLR were positioned at same physical entity, HSS obtained user's all kinds of circuit domain CAMEL-Subscription-Information from the HLR subclass by internal interface;

When HSS and HLR were positioned at different physical entities, HSS obtained user's all kinds of circuit domain CAMEL-Subscription-Information from HLR by external interface.

9. method according to claim 8 is characterized in that, described HSS is specially from the step that HLR obtains user's all kinds of circuit domain CAMEL-Subscription-Information by external interface:

HSS intercepts and captures the response message that the request of mailing to HLR and all HLR send by the signaling catching mode, and obtains the subscriber line circuit territory CAMEL-Subscription-Information of HLR inside according to the relation of described request and response; Perhaps

HSS uses Any Time Interrogation order ATSI to obtain subscriber line circuit territory CAMEL-Subscription-Information from the HLR inquiry; Perhaps

HSS uses notice user data variance command NSDC to obtain subscriber line circuit territory CAMEL-Subscription-Information by the subscribing notification mode from HLR.

10. method according to claim 7 is characterized in that, also comprises before HSS sends to AS with the subscriber line circuit territory CAMEL-Subscription-Information that obtains:

HSS is converted to Diameter form or XML form with the subscriber line circuit territory CAMEL-Subscription-Information that obtains.

11. method according to claim 1 is characterized in that, described method also comprises:

AS uses according to the subscriber line circuit territory CAMEL-Subscription-Information that obtains, and described application comprises: the synchronous setting and the territory of carrying out cross-domain professional control, circuit domain CAMEL-Subscription-Information and IMS territory CAMEL-Subscription-Information at IMS domain are selected.

12. an IP Multimedia System is used the method for acquisition cuicuit domain information, it is characterized in that described method comprises:

Application server AS sends subscribe request, booking reader's circuit domain information by Sh interface to home subscribed services device HSS;

HSS writes down subscribing relationship, and when the subscriber line circuit domain information changes to the AS message that makes an announcement, wherein carry the subscriber line circuit domain information that AS subscribes to.

13. method according to claim 12 is characterized in that, described method also comprises:

To have subscribe command Sh-Subs-Notif now as booking reader's circuit domain information change notification message.

14. method according to claim 12 is characterized in that, described method also comprises:

Data refer parameter among the existing subscribe command Sh-Subs-Notif is increased new value, show the subscriber line circuit domain information type that AS need subscribe to.

15. method according to claim 14 is characterized in that, what the newly-increased data refer parameter value of described Sh-Subs-Notif order showed the AS subscription is subscriber line circuit territory supplementary service information, also comprises:

Increase the parameter of the supplementary service information of hanging under a certain class basic service of this subscription operation of sign AS request in existing subscribe command Sh-Subs-Notif, this parameter is used to carry basic service group code; And/or

Increase the parameter of the supplementary service of this subscription operation of sign AS request in existing subscribe command Sh-Subs-Notif, this parameter is used to carry Supplementary Service Code.

16. method according to claim 14 is characterized in that, described AS comprises to the step that HSS sends the subscribe request of expansion by Sh interface:

AS sends the Sh-Subs-Notif request that comprises Mobile Subscriber International ISDN Number, described data refer parameter and described basic service set code parameters to HSS, subscribes to all supplementary service information of hanging under this specific basic service set; Perhaps

AS sends the Sh-Subs-Notif request that comprises Mobile Subscriber International ISDN Number, described data refer parameter and described supplementary service code parameters to HSS, subscribes to this specific supplemental business information of hanging under all basic service set; Perhaps

AS sends the Sh-Subs-Notif request that comprises Mobile Subscriber International ISDN Number, described data refer parameter, described basic service set code parameters and described supplementary service code parameters, this specific supplemental business information of inquiring about the following extension of hanging under this specific basic service set to HSS.

17. method according to claim 14 is characterized in that, described AS comprises to the step that HSS sends the subscribe request of expansion by Sh interface:

AS sends the Sh-Subs-Notif request that the subscriber line circuit territory CAMEL-Subscription-Information that only comprises Mobile Subscriber International ISDN Number and the described AS of showing subscription is the data refer parameter of supplementary service information, the supplementary service information of subscribing to all basic services and hanging down to HSS.

18. method according to claim 14 is characterized in that, the newly-increased data refer parameter value of described Sh-Subs-Notif order show that AS subscribes to be subscriber line circuit territory basic service information the time, also comprise:

Increase the parameter of a certain basic service information of this subscription operation of sign AS request in existing querying command Sh-Subs-Notif, this parameter is used to carry basic service code; Perhaps

AS sends to HSS that only to comprise the subscriber line circuit territory CAMEL-Subscription-Information that Mobile Subscriber International ISDN Number and described expression AS pull subscription be the Sh-Subs-Notif request of the newly-increased data refer parameter of basic service information, all basic service information that the booking reader contracts.

19. method according to claim 12 is characterized in that, described HSS comprises to the make an announcement step of message of AS when the subscriber line circuit domain information changes:

HSS perception subscriber line circuit domain information changes;

HSS is according to the subscriber line circuit domain information of subscription information after AS notice change events and variation of AS.

20. method according to claim 19 is characterized in that, the step that described HSS perception subscriber line circuit domain information changes comprises:

When the embedded HLR subclass of HSS, HLR finds unconditionally this incident to be notified to HSS by internal interface when the subscriber line circuit domain information changes;

When HSS and HLR were positioned at different physical entities, HSS changed from HLR perception subscriber line circuit domain information by external interface.

21. method according to claim 20 is characterized in that, described HSS is specially from the step that HLR perception subscriber line circuit domain information changes by external interface:

HSS intercepts and captures the response message that the request of mailing to HLR and all HLR send by the signaling catching mode, and obtains the subscriber line circuit domain information that HLR inside changes according to the relation of described request and response; Perhaps

HSS uses notice user data variance command NSDC to change from HLR perception subscriber line circuit domain information by the subscribing notification mode, and obtains the subscriber line circuit domain information that has changed.

22. method according to claim 19 is characterized in that, described subscriber line circuit domain information comprises: subscriber line circuit territory subscription data and/or user registration state, positional information.

23. method according to claim 19 is characterized in that, described HSS comprises according to the step of the subscriber line circuit domain information of subscription information after AS notice change events and variation of AS:

After HSS receives the message that user registration state that attaching position register HLR sends changes with the User Status change events and the state after changing send to described AS; Perhaps

After HSS receives the message that user's supplementary service information that attaching position register HLR sends changes, the state information and the basic service set of the supplementary service after changing sent to described AS.

24. method according to claim 23 is characterized in that,

HLR perceives after the user roams the back for the first time attach operation or VLR Visitor Location Register VLR remove a user's incident, sends the message that User Status changes to HSS.

25. method according to claim 23 is characterized in that,

HLR perceive VLR Visitor Location Register VLR to HLR send data after message synchronization is upgraded or keeper by HLR interface change user supplementary service data after, send the message that user's supplementary service changes to HSS.

26. method according to claim 12 is characterized in that, described method also comprises:

AS uses according to the subscriber line circuit domain information that obtains, and described application is included in synchronous setting and the territory selection that IMS domain carries out cross-domain professional control, circuit domain CAMEL-Subscription-Information and IMS territory CAMEL-Subscription-Information.

27. the method for an IP Multimedia System application circuit domain information is characterized in that, described method comprises step:

Application server AS is obtained the subscriber line circuit domain information by Sh interface from home subscribed services device HSS;

AS uses the subscriber line circuit domain information that these obtain at IMS domain according to service logic.

28. method according to claim 27 is characterized in that, described AS comprises from the step that HSS obtains the subscriber line circuit domain information by Sh interface:

AS obtains the subscriber line circuit domain information by Sh interface to the HSS inquiry; Perhaps

AS subscribes to HSS by Sh interface and obtains the subscriber line circuit domain information.

29. method according to claim 28 is characterized in that, described AS comprises by the step that Sh interface obtains the subscriber line circuit domain information to the HSS inquiry:

The existing querying command Sh-Pull of the Sh interface between expansion AS and the HSS makes it support the inquiry of subscriber line circuit territory CAMEL-Subscription-Information;

AS obtains subscriber line circuit territory CAMEL-Subscription-Information by the querying command of Sh interface after HSS sends expansion.

30. method according to claim 28 is characterized in that, described AS subscribes to the step of obtaining the subscriber line circuit domain information by Sh interface to HSS and comprises:

The existing subscribe command Sh-Subs-Notif of the Sh interface between expansion AS and the HSS makes it support the subscription of subscriber line circuit domain information;

AS obtains subscriber line circuit territory CAMEL-Subscription-Information by the subscribe command of Sh interface after HSS sends expansion.

31. method according to claim 28 is characterized in that, the step that described AS uses these subscriber line circuit domain informations that obtain at IMS domain according to service logic comprises:

AS carries out cross-domain professional control according to the subscriber line circuit domain information that obtains at IMS domain; Perhaps

AS carries out the synchronous setting of circuit domain CAMEL-Subscription-Information and IMS territory CAMEL-Subscription-Information according to the subscriber line circuit domain information that obtains at IMS domain; Perhaps

AS carries out the territory according to the subscriber line circuit domain information that obtains at IMS domain and selects.

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