WO2008086699A1

WO2008086699A1 - A session route control method and a communication network system using the method

Info

Publication number: WO2008086699A1
Application number: PCT/CN2007/003770
Authority: WO
Inventors: Hengliang Zhang
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2006-12-27
Filing date: 2007-12-25
Publication date: 2008-07-24
Also published as: CN101212450B; CN101212450A

Abstract

A session route control method and a communication network system using the method. The method comprises the following steps: CSI-IW senses the ability of the terminal on the user side (201), and sends an amendment message for amending the service activation information in the user signed information to HSS, based upon whether this user terminal has the ability of providing CSI service (202); and HSS request to update the user signed information of the S-CSCF of the domain to which said user terminal belongs, according to the amended user signed information (203); When the S-CSCF received a session request (204), it routes this session request according to the updated user signed information (205,206). The present invention makes it convenience to route a session request from an IMS terminal user, according to the ability of the CSI terminal in which the user resides, to avoid routing a session request to CSI-IW when the terminal does not have the ability about CSI.

Description

Session routing control method and device and communication network system

The present invention relates to the field of wireless communications, and in particular, to a session routing control method and a session routing control apparatus thereof, and a communication network system when a CSI terminal and an IMS terminal communicate with each other. Background technique

IMS (IP Multimedia Subsystem, IP Multimedia Subsystem) is an IP Multimedia Subsystem in the WCDMA (CDMA Code Division Multiple Access) network defined by the 3GPP R5/R6 standard. It is a 3G mobile network that implements packet voice and packet. Data, providing a unified network of multimedia services and applications.

The IMS uses the IP packet domain as the bearer channel for its control signaling and media transmission, and uses the SIP Initiated Protocol (Session Initiation Protocol) as the call control signaling. In IMS, the IMS user subscription data is centrally managed in the HSS (Home Subscriber Server), the service is provided by the AS (Application Server), and the session control is controlled by the S-CSCF (Service Call Session Control Function). Module) Complete, AS and S-CSCF are completely separated in the network structure, and the service is triggered to the AS through the S-CSCF, and multiple ASs can work together. The user accesses the IMS through the current local proxy node P-CSCF (Proxy Call Session Control Function Module), and the session and service control are completed by the home domain service node of the registered place. Therefore, the user can always obtain the same at different access points. The service realizes the separation of service management, session control and bearer access, as well as service provision independent of access and location.

CSI (CS and IMS combined services) is a research topic in the current 3GPP standards. This topic focuses on how to combine 3G CS domain (circuit switched domain) services with IMS domain services. The research of this topic is divided into two phases, namely CSI phase 1 and CSI phase 2.

In the subject of interworking between the CSI terminal and the IMS terminal, the following related technologies are available in the standard TR23.899.

Set CSI-IW (CSI-Interworking, CSI interworking logic control function) on the CSI terminal side After receiving the session request from the IMS terminal, the functional entity splits the session message with multiple media components according to the related information, splits the session into a session containing real-time media components, and includes non-real-time media components. Then, based on the relevant information, choose to terminate the real-time session in the CS domain and terminate the non-real-time session in the IMS domain.

Referring to FIG. 1 , a schematic diagram of a framework for interworking between a CSI terminal and an IMS terminal in the prior art, where the IMS terminal is a VoIP terminal. The process of interworking between a CSI terminal and a VoIP terminal includes the following steps:

Step 101: The VoIP terminal initiates an IMS session request to the CSI terminal, where the request includes real-time service and non-real-time service (Voice + MSRP);

Step 102: The IMS on the VoIP terminal side forwards the request to the CSI-IW on the CSI terminal side. Step 103: The CSI-IW performs service logic processing according to the related information, and separates the session request.

Step 104: The CSI-IW sends a session request to the CSI terminal, where the request message includes the non-real-time service and the indication information that the CSI terminal initiates the terminal to the network CS bearer (initiating the CS call indication + MSRP);

Step 105: After receiving the session request message, the CSI terminal initiates a CS call (SETUP) to the CSI-IW.

Step 106: The MGCF (Media Gateway Control Function) receives the CS call request of the CSI terminal, and maps the INVITE message to the CSI-IW.

Step 107: The CSI-IW sends a 200 OK response message to the MGCF.

Step 108: The MGCF sends a 200 OK response message to the CS CONNECT message and sends the message to the CSI terminal.

Step 109: The CSI terminal sends a 200 OK response message to the CSI-IW, where the response message only includes the media information of the MSRP.

Step 110: The CSI-IW merges the CS call from the CSI terminal with the IMS session. Step 111: The CSI-IW sends the merged 200 OK response message to the called IMS.

Step 112: The called IMS forwards the 200 OK response message to the VoIP terminal.

In the architecture and process description, the S-CSCF of the home domain of the CSI terminal receives the session from the calling party. When requesting, the session is not checked, but all received session requests are routed to the CSI AS (CSI-IW in the above process), and processed by CSIAS to determine whether to remain in the session path. In this way, the session of the calling party is routed, and the received session request is routed to the CSI AS for processing. Therefore, some session requests that do not need to be processed by the CSI AS are also routed to the CSI AS, causing routing processing. Waste of the aspect. Summary of the invention

The embodiment of the present invention discloses a session routing control method when a CSI terminal and an IMS terminal communicate with each other to save a routing process. The method includes the following steps:

The CSI interworking logic control function entity CSI-IW senses the capability of the terminal where the user is located, and initiates corresponding modification of the service activation information in the user subscription information of the home subscription subscriber server HSS according to the perceived capability of the terminal;

The HSS initiates user subscription information update to the call session control function module S-CSCF of the terminal-side home domain according to the modification result;

After receiving the session request initiated by the IMS terminal, the S-CSCF routes the session request according to the updated user subscription information.

Another embodiment of the present invention discloses a routing control apparatus for interworking between a CSI terminal and an IMS terminal to save a routing process. The apparatus includes: an information acquiring module and a subscription information modification initiating module;

The information acquiring module is configured to subscribe the registration information of the user to the S-CSCF, and perceive the capability of the terminal where the user is located according to the terminal capability information in the user registration information; or use the other system to query the information perception according to the query. The capabilities of the terminal;

The subscription information modification initiating module is configured to: according to the capability that the terminal, which is perceived by the information acquisition module, has the capability of providing a CSI service, initiate a modification of the service activation information to the HSS, and set the information of the CSI service activation in the HSS subscription information. Or the activation of the CSI service in the user subscription information, or the indication that the CSI service activation in the user subscription information is set according to the capability of the information acquisition module that the terminal does not have the capability of providing the CSI service. Is not activated. Another embodiment of the present invention discloses a communication network system to save a routing process, the system including CSI-IW, S-CSCF and HSS;

The CSI-IW is configured to sense the capability of the terminal where the user is located, and initiate corresponding modification of the service activation information in the user subscription information to the HSS according to the perceived capability of the terminal;

The HSS is configured to initiate, according to the modification result, user subscription information update to the S-CSCF in the home domain of the terminal side;

The S-CSCF is configured to route a session request initiated by the received IMS terminal according to the updated user subscription information.

In the foregoing embodiment of the present invention, the CSI-IW is used to sense the capability of the terminal where the user is located, and the S-CSCF is modified by initiating the HSS subscription information modification according to the perceived terminal capability, and the HSS initiates the subscription information update to the S-CSCF. The session request initiated by the IMS terminal user performs routing control. Compared with the prior art, the session request is avoided to be routed to the CSI-IW when the terminal does not have the CSI capability, thereby saving routing overhead. DRAWINGS

1 is a schematic diagram of a framework for interworking between a CSI terminal and an IMS terminal in the prior art;

2 is a schematic diagram of session routing control according to Embodiment 1 of the present invention;

3 is a schematic diagram of session routing control according to Embodiment 2 of the present invention;

4 is a schematic diagram of session routing control according to Embodiment 3 of the present invention;

FIG. 5 is a schematic diagram of session routing control according to Embodiment 4 of the present invention; FIG.

6 is a schematic structural diagram of a route control apparatus according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a communication network system according to an embodiment of the present invention. detailed description

The embodiment of the invention provides a session routing control method when the CSI terminal and the IMS terminal communicate with each other, and the method includes the following steps:

Step 1. The CSI-IW obtains the capability information of the terminal used by the user, and also obtains the location of the user. Capability information of the access network.

The CSI-IW can determine whether the access network has the capability of providing the CSI service by obtaining the capability information of the dual transport mode (DTM). The access network is determined by acquiring the MultiRAB information of the 3G access network. Whether it has the ability to provide CSI business processing.

In this step, the CSI-IW obtains the user terminal capability information in the following manners: Mode 1. The CSI-IW obtains the capability information of the terminal through the information carried in the terminal user registration; mode 2, CSI-IW to other entities or The system acquires capability information of the terminal.

In this step, the CSI-IW obtains the capability information of the access network where the user is located, and the following methods are available:

Method 1. The CSI-IW obtains the capability information of the access network where the user is located through the information of the access network carried by the terminal when registering;

Mode 2. The CSI-IW obtains the capability information of the access network where the user is located according to the information of the access network to other entities or systems.

Step 2: The CSI-IW initiates a modification operation of the user service activation information in the user subscription data to the HSS according to the obtained information.

In this step, the CSI-IW initiates the corresponding operation of the user service activation information in the user subscription data to the HSS according to whether the terminal where the user is located and the access network where the user is located have the capability of providing CSI service processing.

In step 1, the CSI-IW obtains the user terminal capability information. In this step, the CSI-IW determines, according to the obtained information, whether the user terminal has the CSI service processing capability, and if so, the CSI-IW initiates to the HSS. The user service activation information modification operation sets the CSI service activation indication in the user subscription data in the HSS to be activated; if not, the CSI-IW initiates the modification operation of the user service activation information to the HSS, and signs the user in the HSS. The CSI service activation indication in the data is set to inactive. '

In step 1, the CSI-IW obtains the capability information of the user terminal and the capability information of the access network where the user is located. In this step, the CSI-IW determines that the user terminal and the access network have the capability of providing CSI service processing, and then initiates The user service activation information modification operation to the HSS will sign the user in the HSS. The CSI service activation indication in the data is set to be activated; otherwise, the modification operation of the user service activation information to the HSS is initiated, and the CSI service activation indication in the user subscription data in the HSS is set to be inactive.

Step 3: The HSS initiates update of the user subscription data to the S-CSCF of the domain to which the user belongs by using the Cx interface according to the modification result of the user service activation information in the subscription data.

When the CSI-IW sets the CSI service activation indication on the HSS to active, and the indication in the HSS original data is inactive, the identifier is changed from activated to active, and the HSS is initiated to the S-CSCF through the Cx interface. The increase operation of the Trigger point data in the related iFC data is to enable the S-CSCF to route subsequent received session requests to the CSI-IW.

When the CSI-IW sets the CSI service activation indication on the HSS to inactive, and the indication in the original HSS data is active, the identifier is modified from activated to inactive, and the HSS initiates to the S-CSCF through the Cx interface. The deletion of the Trigger point data in the relevant iFC data is for the S-CSCF to not route the subsequently received session request to the CSI-IW.

Step 4: When receiving the session request initiated by the IMS terminal, the S-CSCF performs routing control according to the updated user subscription information.

The S-CSCF determines whether the received session request is to be routed to the CSI-IW for processing based on the information in the session request and the updated Trigger point data in the associated iFC data settings.

In order to explain the present invention in detail, the following description is made in conjunction with the specific embodiments and drawings.

Embodiment 1

This embodiment describes that the CSI-IW knows that the terminal where the user is located has the capability of providing CSI service processing, and initiates modification of the CSI service activation state to the HSS, and implements session routing control when the CSI terminal and the IMS terminal communicate with each other.

FIG. 2 is a schematic diagram of a session routing control according to Embodiment 1 of the present invention, where the S-CSCF is an S-CSCF serving a user in a domain to which the CSI terminal belongs, and the specific steps include:

Step 201: The CSI-IW learns that the terminal where the user is located has the processing capability of providing the CSI service.

The CSI-IW can query other systems for the capability information of the terminal where the user is located, for example, by querying The device management data (DM) system acquires the capability information of the terminal; or, the CSI-IW can acquire the capability information of the terminal through an interface with the presence system (presentation system).

Then, the CSI-IW determines, according to the acquired capability information of the terminal, whether the terminal has the processing capability for providing the CSI service. In this embodiment, the CSI-IW determines that the terminal has the processing capability to provide CSI services.

Step 202: The CSI-IW initiates modification of the user activation state data to the HSS, and sets the CSI service activation indication in the subscription data of the user on the HSS to an active state.

In this embodiment, the original CSI service activation indication in the user subscription data in the HSS is inactive, and the CSI service activation indication is modified to be activated after being modified.

Step 203: The HSS initiates user subscription data update to the S-CSCF through the existing Cx interface, and instructs the S-CSCF to add a Trigger point data setting in the related iFC data, and the added data setting enables the S-CSCF to The session request message is routed to the CSI-IW for processing.

Step 204: The S-CSCF receives a session request INVITE initiated by the calling party IMS terminal. Step 205: The S-CSCF performs routing according to the Trigger point data setting in the modified related iFC data, and the selected result is that the session request is routed to the CSI-IW for processing.

Step 206: The S-CSCF routes the session request to the CSI-IW.

Embodiment 2

This embodiment describes that the CSI-IW knows that the terminal where the user is located does not have the capability of providing CSI service processing, and initiates modification of the CSI service activation state to the HSS, and implements session routing control when the CSI terminal and the IMS terminal communicate with each other.

FIG. 3 is a schematic diagram of a session routing control according to Embodiment 2 of the present invention, where the S-CSCF is an S-CSCF serving the user in the domain to which the CSI terminal side belongs, and the specific steps include:

Step 301: The CSI-IW sensing terminal does not have the capability of providing CSI service processing.

The CSI-IW can sense the CSI capability of the terminal in multiple ways. The sensing mode is the same as that in the first embodiment. Step 302: The CSI-IW initiates modification of the user activation status data to the HSS, and sets the CSI service activation indication in the subscription data of the user on the HSS to an inactive state.

In this embodiment, the original CSI service activation indication in the user subscription data in the HSS is If activated, the CSI service activation indication is modified to be inactive.

Step 303: The HSS initiates user subscription data update to the S-CSCF through the existing Cx interface, instructing the S-CSCF to delete the trigger point data setting in the related iFC data, and deleting the data setting so that the S-CSCF does not The session request message is routed to the CSI-IW for processing.

Step 304: The S-CSCF receives a session request INVITE initiated by the calling party IMS terminal. Step 305: The S-CSCF performs routing according to the Trigger point data setting in the modified related iFC data, and the selected result is that the session request is not routed to the CSWW for processing.

Step 306: The S-CSCF directly routes the session request to the called party user terminal.

Embodiment 3

In this embodiment, the CSI-IW learns that the terminal where the user is located has the capability of providing CSI service processing, and initiates modification of the CSI service activation state to the HSS, and implements session routing control when the CSI terminal and the IMS terminal communicate with each other.

FIG. 4 is a schematic diagram of a session routing control according to Embodiment 3 of the present invention, where the S-CSCF is an S-CSCF serving a user in a domain to which the CSI terminal belongs, and the specific steps include:

Step 401: The CSI-IW initiates a subscription request message (subscribe) to the S-CSCF, and subscribes to the registration information of the user.

Step 402: The S-CSCF sends a 200 OK response message of the subscription request.

Step 403: The CSI terminal initiates a registration request to the S-CSCF, where the request carries the capability information of the terminal.

Step 404: The S-CSCF sends a 200 OK response message of the registration message.

Step 405: The S-CSCF sends a notify message to the CSI-IW, and notifies the CSI-IW of the information registered by the user.

The above steps 404 and 405 have no specific time order limitation.

Step 406: The CSI-IW is provided with the CSI service processing capability from the information-aware terminal carried in the notify message.

Step 407: The CSI-IW sends a 200 OK response of the notify message to the S-CSCF. Steps 408 to 409, in the same manner as step 202 203 in the first embodiment, the CSI-IW initiates user activation data modification to the HSS, and the HSS initiates user subscription data update to the S-CSCF through the existing Cx interface, indicating S- The CSCF adds a Trigger point data setting in the associated iFC data that enables the S-CSCF to route the session request message to the CSI-IW for processing.

Steps 410 to 412, in step 204 206 of the first embodiment, the S-CSCF receives the session request initiated by the calling party IMS terminal, and routes the session request to the CSI-IW.

Embodiment 4

This embodiment describes that the CSI-IW learns that the user's terminal does not have the capability of providing CSI service processing, and initiates the modification of the CSI service activation state to the HSS, and implements session routing control when the CSI terminal and the IMS terminal communicate with each other.

FIG. 5 is a schematic diagram of a session routing control according to Embodiment 4 of the present invention, where the S-CSCF is an S-CSCF serving the user in a domain to which the CSI terminal belongs, and the specific steps include:

Steps 501 to 507, in the same manner as steps 401 to 407 in the third embodiment, the CSI-IW obtains the capability information of the terminal where the user is located by subscribing the user registration information. In this embodiment, the CSI-IW determines that the terminal does not provide the information according to the obtained capability information. CSI business processing capabilities.

Steps 508 to 509, in the same manner as steps 302 to 303 in the second embodiment, the CSI-IW initiates user activation data modification to the HSS, and the HSS initiates user subscription data update to the S-CSCF through the existing Cx interface, indicating the S-CSCF. The Trigger point data setting in the relevant iFC data is deleted, and the data setting is deleted so that the S-CSCF does not route the session request message to the CSI-IW for processing.

Steps 510 ~ 512, in step 304 306 of the second embodiment, the S-CSCF receives the session request initiated by the calling party IMS terminal, does not route the session request to the CSI-IW, but routes the session request to The called party terminal.

The embodiment of the invention further provides a communication network system and a routing control device for interworking between a CSI terminal and an IMS terminal.

FIG. 6 is a schematic structural diagram of a route control apparatus according to an embodiment of the present invention. The device includes a subscription information modification initiation module and an information acquisition module.

Information acquisition: The module is used to subscribe the user's registration information to the S-CSCF and according to the user registration information. The terminal capability information in the terminal senses the capability of the terminal where the user is located, so as to know whether the user terminal has the processing capability for providing the CSI service. Or, it is used to query other systems to perceive the capabilities of the user's terminal according to the queried information.

The subscription information modification initiating module, according to the capability that the information acquisition module perceives, has the capability of providing the CSI service, and initiates the modification of the service activation information to the HSS, and sets the information of the CSI service activation in the HSS subscription information to be activated; or, the subscription information modification is initiated. The module does not have the capability of providing the CSI service according to the capability that the terminal that the module is aware of, and initiates the modification of the service activation information to the HSS, and sets the indication of the CSI service activation in the user subscription information to be inactive.

The information obtaining module is further configured to: according to the access network information in the user registration information, the capability of the user to access the network; or query the other system according to the access network information in the user registration information, and perceive according to the queried information. The ability of the user to access the network;

When the information acquisition module senses that the terminal and the access network have the capability of providing the CSI service, the subscription information modification initiating module initiates the modification of the service activation information to the HSS, and sets the CSI service activation information in the HSS subscription information to be activated.

When the information acquisition module senses that the terminal or the access network does not have the capability of providing the CSI service, the subscription information modification initiating module initiates the modification of the service activation information to the HSS, and sets the indication of the CSI service activation in the user subscription information to be inactive.

After the indication of the CSI service activation is modified, the HSS initiates the user subscription information update to the S-CSCF, so that after receiving the session request initiated by the calling IMS terminal, the S-CSCF performs routing control on the session request according to the updated user subscription data.

FIG. 7 is a schematic structural diagram of a communication network system according to an embodiment of the present invention. The system includes CSI-IW, S-CSCF and HSS, where CSI-IW belongs to the same domain as S-CSCF.

The CSI-IW is used to sense the capability of the terminal where the user is located, and to determine whether the terminal where the user is located specifically provides the capability of the CSI service. When the CSI-IW detects that the terminal where the user is located has the capability of providing the CSI service, the indication of the modification of the subscription information is set to the HSS, and the indication that the CSI service activation in the user subscription information is set to be activated; When it has the ability to provide CSI services, it initiates a modification instruction for the contract information to the HSS, indicating the CSI service in the user subscription information. The activated indicator is set to inactive.

The CSI-IW can also be used to sense the capability of the user to access the network, and determine whether the terminal where the user is located and the access network in which the user is located provide the CSI service. When the CSI-IW senses that the user's terminal and the access network have the capability of providing CSI services, the HSS initiates a modification instruction of the subscription information, and indicates that the indication of the CSI service activation in the user subscription information is set to be activated; when CSI-IW When the terminal where the user is located or the access network where the user is located does not have the capability of providing the CSI service, the HSS initiates the modification instruction of the subscription information, and indicates that the indication of the CSI service activation in the user subscription information is set to be inactive.

On the CSI-IW, there may be a device as shown in FIG. 6 for sensing the capability of the terminal where the user is located, and for sensing the capability of the access network, and initiating the subscription information to the HSS to the HSS according to the perceived result. The corresponding modification of the business activation information.

When the indication of CSI service activation is changed from activated to active, the HSS initiates an increase of the Trigger point data in the relevant iFC data to the S-CSCF, so that the S-CSCF routes the subsequently received session request to the CSI-IW; When the indication of CSI service activation is changed from activated to inactive, the HSS initiates the deletion of the Trigger point data in the relevant iFC data of the S-CSCF, so that the S-CSCF does not route the subsequently received session request to the CSI-IW.

When the S-CSCF receives the session request initiated by the calling side IMS terminal, the S-CSCF performs routing control on the received session request according to the Trigger point data setting in the related iFC data. If the Trigger point data is set to route the session request to the CSI-IW, the S-CSCF routes the session request of the IMS terminal to the CSI-IW; otherwise, the session request of the IMS terminal is routed to the CSI terminal of the opposite end.

In summary, the embodiment of the present invention senses the CSI capability of the CSI terminal or the access network where the user is located through the CSI-IW, the modification of the HSS subscription information by the initiation, and the subscription information update initiated by the HSS to the S-CSCF, so that the S- The CSCF performs routing control on the session request initiated by the IMS terminal user to avoid routing the session request to the CSI-IW when the terminal does not have the CSI capability, thereby saving routing overhead. In addition, the present invention provides a manner in which a plurality of CSI-IWs are aware of the CSI capabilities of the CSI terminal or the access network where the user is located, including subscribing to the user registration information, and perceiving the CSI terminal or the access network of the user from the registration information of the user. CSI capabilities, or manage data by querying devices The system or the presentation system senses the CSI capability of the CSI terminal or the access network where the user is located, which improves application flexibility. The spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and the modifications of the invention

Claims

Rights request

A session routing control method for interworking between a CSI terminal and an IMS terminal, characterized in that the method includes the following steps:

The CSI interworking logic control function entity CSI-IW senses the capability of the terminal where the user is located, and initiates corresponding change of the service activation information in the user subscription information of the home subscriber network server HSS according to the perceived capability of the terminal;

2. The method according to claim 1, wherein the CSI-IW senses the capability of the terminal where the user is located, specifically:

The CSI-IW senses the capabilities of the terminal where the user is located through the information carried by the user; or queries other systems, and perceives the capabilities of the user terminal according to the queried information.

The method of claim 2, wherein the CSHW senses the capability of the terminal where the user is located by using the information carried by the user, specifically:

The CSI-I obtains the terminal capability information carried in the user registration by subscribing to the registration information of the user to the S-CSCF.

The method according to claim 1, wherein the CSI-IW initiates corresponding modification of the service activation information in the user subscription information to the HSS according to the perceived capability of the terminal, including:

The CSI-IW detects that the terminal has the capability of providing the CSI service, and initiates the modification of the service activation information to the HSS, and sets the information of the CSI service activation in the subscription information to be activated.

Alternatively, the CSI-IW detects that the terminal does not have the capability of providing the CSI service, and then initiates modification of the service activation information to the HSS, and sets the information of the CSI service activation in the subscription information to be inactive.

5. The method of claim 1, further comprising the step of: CSI-IW sensing the capability of the user to access the network, the steps comprising:

When the CSI-IW senses that the terminal and the access network have the capability of providing CSI services, initiates modification of the service activation information to the HSS, and sets the information of the CSI service activation in the subscription information to be activated; or

When the CSI-IW detects that the terminal or the access network does not have the capability of providing CSI services, it initiates modification of the service activation information to the HSS, and sets the information of the CSI service activation in the subscription information to be inactive.

The method according to claim 5, wherein the CSI-IW is capable of sensing the access network of the user, including:

The CSI-IW senses the access network of the user through the access network information carried in the user registration; or queries the other system according to the access network information of the user that the user carries when registering, and perceives the user according to the queried information. The ability to access the network.

The method according to claim 4 or 5, wherein the HSS initiates user subscription information update to the S-CSCF of the home domain in the terminal side according to the modification result, including:

If the information of the CSI service activation on the HSS is changed from active to active, the HSS initiates an increase in trigger point data in the relevant iFC data of the S-CSCF serving the user, indicating that the S-CSCF will The received session request is routed to the CSWW for processing;

Or, if the information about the CSI service activation on the HSS changes from active to inactive, the HSS initiates deletion of trigger point data in the relevant iFC data of the S-CSCF serving the user, indicating the S- The CSCF does not need to route received session requests to the CSI-IW.

8. The method of claim 2 or 6, wherein the other system is a device management data system or a presentation system.

A routing control device for interworking between a CSI terminal and an IMS terminal, comprising: an information acquiring module and a subscription information modification initiating module;

The information acquiring module is configured to subscribe the registration information of the user to the S-CSCF, and perceive the capability of the terminal where the user is located according to the terminal capability information in the user registration information; or use to query other systems, Perceiving the capabilities of the terminal according to the queried information;

The subscription information modification initiating module is configured to: according to the capability that the terminal, which is perceived by the information acquisition module, has the capability of providing a CSI service, initiate a modification of the service activation information to the HSS, and set the information of the CSI service activation in the HSS subscription information. Or to activate the service activation information to the HSS, and to activate the CSI service in the user subscription information, according to the capability that the terminal does not have the capability of providing the CSI service. The indication is set to inactive.

The device according to claim 9, wherein the information acquiring module is further configured to: according to the access network information in the user registration information, the capability of the access network where the user is located; or according to the user registration information. Access network information in the middle, querying other systems, and sensing the ability of the user to access the network according to the queried information;

When the information obtaining module senses that the terminal and the access network have the capability of providing CSI services, the subscription information modification initiating module initiates modification of the service activation information to the HSS, and activates the CSI service in the HSS subscription information. Information is set to activate;

When the information acquisition module senses that the terminal or the access network does not have the capability of providing CSI services, the subscription information modification initiating module initiates modification of the service activation information to the HSS, and the user subscription information is The indication of CSI service activation is set to inactive.

A communication network system, comprising: a CSI-IW, an S-CSCF, and an HSS; the CSI-IW, configured to sense a capability of a terminal where the user is located, and to sense the capability of the terminal Corresponding modification of the service activation information in the subscriber subscription information initiated to the HSS;

The system according to claim 11, wherein the CSI-IW is further configured to sense the capability of the access network where the user is located, and according to the perceived capability of the terminal and the capability of the access network. Corresponding modification of the service activation information in the subscriber subscription information initiated to the HSS.