CN104348989A - Call switching method between set top box and call terminal, and application server - Google Patents

Abstract

The invention proposes a method for switching calls between a set-top box and a call terminal and an application server. The method includes: during the voice call between the calling set-top box and the called terminal, the called multimedia communication AS discovers that the called set-top box is turned on, queries the service information registered by the called user and the current call session information, and if it finds that the called user registers If the call switching service is enabled, and it is found that the called user still has a voice call that can be switched to the set-top box at this time, the called set-top box is notified to switch the current voice call to a video call, and a call re-invitation is initiated to the calling set-top box, so that the caller and called The set-top box is called to establish a video call, and the call between the calling party and the called party is switched from the called call terminal to the called set-top box, and the call terminal is a terminal other than the set-top box. The invention realizes the automatic call switching from the call terminal to the set-top box.

Description

Method for switching calls between set-top box and call terminal and application server

technical field

The invention relates to the technical field of video calls, in particular to a method for switching calls between a set-top box and a call terminal and a multimedia communication application server (AS, Application Server).

Background technique

Digital Video Converter Box (STB, Set Top Box) referred to as set-top box is a kind of intelligent terminal equipment connected to the network in the user's home. Based on the set-top box, it is equipped with cameras, microphones and other equipment to provide users with home video call services based on the TV screen. Function.

When the existing technical solution provides a video call function based on a set-top box, the set-top box needs to be kept in a power-on state, so that the set-top box is ready to receive the incoming call notification sent by the network side at any time when the set-top box is in standby mode. The phone interface and other methods remind the user of the incoming call information. After the user finds the incoming call notification, he can answer the incoming call and make a video call with the caller.

As mentioned above, the home video call function provided by the existing technical solutions needs to be based on a set-top box device, so the set-top box must be turned on to receive incoming call notifications normally. In the user's home, when the user is not watching TV, the set-top box is often turned off or changed to a standby dormant state. At this time, the internal system of the set-top box stops running, and the incoming call notification message sent by the network side will not be received.

Contents of the invention

The invention provides a method for switching calls between a set-top box and a call terminal and a multimedia communication AS to realize automatic call switching from the call terminal to the set-top box.

Technical scheme of the present invention is realized like this:

A method for switching calls between a set-top box and a call terminal, the method comprising:

During the voice call between the calling set-top box and the called terminal, the called multimedia communication AS discovers that the called set-top box is turned on, and queries the service information registered by the called user and the current call session information. If it is found that the called user still has a voice call that can be switched to the set-top box at this time, it will notify the called set-top box to switch the current voice call to a video call, and initiate a call re-invitation to the calling set-top box so that the calling set-top box and the called set-top box can establish In the video call, the call between the calling party and the called party is switched from the calling terminal to the called set-top box, and the calling terminal is a terminal other than the set-top box.

Before the called multimedia communication AS discovers that the called set-top box is turned on, it further includes:

The called multimedia communication application server AS receives the call invitation for the called set-top box sent by the calling set-top box, and finds out that the called set-top box and the called terminal have set the function of synchronous ringing for incoming calls, and simultaneously sends a call request to the called set-top box and the called terminal. Call the call terminal to initiate a call invitation;

The called multimedia communication AS receives the ringing message returned by the called terminal, and returns the ringing message to the calling set-top box.

After the called multimedia communication AS notifies the called set-top box to switch the current voice call to a video call, and before initiating a call re-invitation to the calling set-top box, it further includes: the called multimedia communication AS receives the user confirmation switch sent by the called set-top box instruct.

After the called multimedia communication AS notifies the called set-top box to switch the current voice call to a video call, and before initiating a call re-invitation to the calling set-top box, it further includes:

The called multimedia communication AS queries the call switching service information registered by the called user, checks whether the called set-top box and the user account used by it in the service information have the authority to switch the call from the calling terminal to the set-top box, and if so, confirm that the switch can be made, Execute the action of initiating a call re-invitation to the calling set-top box.

The called multimedia communication AS discovers that the called set-top box is turned on, and querying the service information registered by the called user includes:

After the called user registers to the IMS network, the S-CSCF learns the called multimedia communication AS to be notified after the user successfully registers from the initial filtering rule IFC in the user data downloaded from the home subscriber server HSS, and the S-CSCF notifies the called party The called user of the multimedia communication AS completes the IMS registration, and after learning that the called user completes the IMS registration, the called multimedia communication AS fetches the service information registered by the called user from the HSS.

The said called multimedia communication AS discovers that the called set-top box starts up including:

The called multimedia communication AS receives a query message from the called set-top box whether there is currently a switchable call, and the message carries the called user ID.

The called multimedia communication AS querying the service information registered by the called user and the current call session information includes:

According to the called user identification, query the service information registered by the called user and the current call session information, if the service information registered by the called user indicates that the called user has opened the call switching service, then check the current call session information and judge Whether the called user account or other user accounts associated with it are currently holding a voice call that can be switched to the set-top box. User Account.

After the called multimedia communication AS notifies the called set-top box to switch the current voice call to a video call, and before initiating a call re-invitation to the calling set-top box, it further includes:

The called multimedia communication AS receives the call invitation message sent by the called set-top box, the called number in the message is the number of the calling set-top box, and starts to execute the action of initiating a call re-invitation to the calling set-top box.

A method for switching calls between a set-top box and a call terminal, the method comprising:

The called multimedia communication AS receives the call invitation from the calling set-top box for the called set-top box, and finds out that the called set-top box and the called terminal have set the simultaneous ringing function for incoming calls, then simultaneously communicates with the called set-top box and the called terminal. The terminal initiates a call invitation;

The called multimedia communication AS receives the ringing message returned by the called terminal and the called set-top box;

When the called multimedia communication AS receives the off-hook message returned by the called terminal, it notifies the called set-top box to release the ringing channel, and notifies the calling set-top box that the called terminal has gone off-hook;

During the voice call between the calling party and the called party, after receiving the instruction from the called set-top box to switch to a video call, the called multimedia communication AS initiates a call re-invitation to the calling set-top box, so that the calling set-top box and the called set-top box can establish a video call. The calling between the calling party and the called party is switched from the calling terminal to the called set-top box, and the calling terminal is a terminal other than the set-top box.

The called multimedia communication AS further includes:

The called multimedia communication AS queries the call switching service information registered by the called user, checks whether the called set-top box and the user account used by it in the service information have the authority to switch the call from the calling terminal to the set-top box, and if so, confirm that the switch can be made, Execute the action of initiating a call re-invitation to the calling set-top box.

A multimedia communication AS, located on the called user side of the IMS network, the AS includes:

The first module: During the voice call between the calling set-top box and the called terminal, if the called set-top box is found to be powered on, query the service information registered by the called user and the current call session information, and if it is found that the called user has registered the call switching service , and find that the called user still has a voice call that can be switched to the set-top box at this time, notify the called set-top box to switch the current voice call to a video call, and initiate a call re-invitation to the calling set-top box, so that the calling set-top box and the called set-top box can establish a video call Conversation, the call between the caller and the called is switched from the called terminal to the called set-top box, and the called terminal is a terminal other than the set-top box.

The AS further includes:

The second module: receive the call invitation for the called set-top box sent by the calling set-top box, check that the called set-top box and the called terminal have set the simultaneous vibration function for incoming calls, and send the call invitation to the called set-top box and the called terminal at the same time Initiate a call invitation; receive the ringing message returned by the called terminal, and return the ringing message to the calling set-top box.

The first module is further configured to, before initiating a call re-invitation to the calling set-top box, receive an instruction from the called set-top box to confirm switching.

The first module is further used to query the call switching service information registered by the called user after notifying the called set-top box to switch the current voice call to a video call, and check whether the called set-top box and the user account used by it in the service information are Possess the authority to switch the call from the calling terminal to the set-top box, if so, confirm that the switching is possible, and execute the action of initiating a call re-invitation to the calling set-top box.

The first module is further configured to, after the called user completes the IMS registration, pull the service information registered by the called user from the home subscriber server HSS.

The first module is further used to receive an inquiry message from the called set-top box whether there is currently a switchable call

The first module executes the action of querying the service information registered by the called user and the current call session information according to the called user identifier.

The first module is further configured to, after notifying the called set-top box to switch the current voice call to a video call, receive a call invitation message sent by the called set-top box, and the called number in the message is the number of the calling set-top box , start to execute the action of initiating a call re-invitation to the calling set-top box.

A multimedia communication AS, located on the called user side of the IMS network, the AS includes:

The first module: receive the call invitation for the called set-top box sent by the calling set-top box, check that the called set-top box and the called terminal have set the function of simultaneous ringing for incoming calls, and send the call invitation to the called set-top box and the called terminal at the same time Initiate a call invitation; receive the ringing message returned by the called terminal and the called set-top box; receive the off-hook message returned by the called terminal, notify the called set-top box to release the ringing channel, and notify the calling set-top box to the called terminal has been off-hook, and the call terminal is a terminal other than the set-top box;

The second module: during the voice call between the caller and the called party, after receiving the instruction from the called set-top box to confirm the switch to the video call, initiate a call re-invitation to the calling set-top box, so that the caller and the called set-top box can establish a video call , switch the call between the caller and the called from the called terminal to the called set-top box.

The second module is further configured to, after receiving the instruction from the called set-top box to confirm switching to a video call, query the call switching service information registered by the called user, and check the called set-top box and its usage in the service information. Whether the user account of the user has the authority to switch the call from the call terminal to the set-top box, and if so, confirm that the switch can be performed, and perform the action of initiating a call re-invitation to the calling set-top box.

It can be seen that the present invention can automatically judge whether the call can be switched from the call terminal to the set-top box.

Description of drawings

FIG. 1 is an example diagram of a system structure applied in an embodiment of the present invention;

2 is a flowchart of a method for switching calls between a set-top box and a fixed-line terminal provided by Embodiment 1 of the present invention;

3 is a flowchart of a method for switching calls between a set-top box and a fixed-line terminal provided by Embodiment 2 of the present invention;

FIG. 4 is a flow chart of a registration method after the set-top box is powered on according to an embodiment of the present invention;

FIG. 5 is a flowchart of a method for switching calls between a set-top box and a mobile terminal according to Embodiment 3 of the present invention;

FIG. 6 is a flowchart of a method for switching calls between a set-top box and a fixed-line terminal provided by Embodiment 4 of the present invention;

FIG. 7 is a schematic composition diagram of a multimedia communication AS provided by Embodiment 1 of the present invention;

FIG. 8 is a schematic diagram of composition of a multimedia communication AS provided by Embodiment 2 of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

FIG. 1 is an example diagram of a system structure applied in an embodiment of the present invention, as shown in FIG. 1 . There are two types of communication terminals in the user's home: fixed-line terminals and set-top boxes. The set-top boxes have video communication functions. Multimedia Subsystem (IMS, IP MultimediaSubsystem) network connection. The mobile phone accesses the IMS network through the public switched telephone network/public land mobile network (PLMN/PSTN, Public Land Mobile Network/Public Switched Telephone Network). The IMS network includes: Interrogating/Serving Call Session Control Function (I/S-CSCF, Interrogating/Serving Call Session Control Function) equipment, Proxy CSCF (P-CSCF, Proxy CSCF) equipment, Session Border Controller (SBC, Session BorderController) ), Multimedia Resource Function Controller (MRFC, Multimedia Resource Function Controller), Multimedia Resource Function Processor (MRFP, Multimedia Resource Function Processor), Breakout Gateway Control Function (BGCF, Breakout Gateway Control Function) device, Video Interworking Gateway (VIG, Video Interworking Gateway), Media Gateway Control Function (MGCF, Media Gateway Control Function) equipment, Home Subscriber Server (HSS, Home Subscriber Server), multimedia communication application server (AS, Application Server). Among them, the fixed-line terminal only supports the traditional voice communication function, but it is a long-term standby terminal in the user's home; the set-top box supports the video communication function, but when the user is not ready to watch TV, the set-top box is likely to be shut down due to the user's usage habits. In practical applications, the user's family may also have a mobile communication terminal such as a mobile phone.

FIG. 2 is a flow chart of a method for switching a call between a set-top box and a call terminal provided by Embodiment 1 of the present invention, wherein the call terminal is a terminal other than the set-top box, as shown in FIG. 2 , and the specific steps are as follows:

Step 201: During the voice call between the calling STB and the called terminal, the called multimedia communication AS discovers that the called STB is switched on, and queries the service information registered by the called user and the current call session information.

Step 202: The called multimedia communication AS finds that the called user has registered for the call switching service, and finds that the called user maintains a voice call that can be switched to the set-top box at this time, then notifies the called set-top box to switch the current voice call to a video call, Initiate a call re-invitation to the calling set-top box, so that the calling and called set-top boxes can establish a video call, and switch the call between the calling and the called from the called terminal to the called set-top box, and the calling terminal is a terminal other than the set-top box .

Fig. 3 is the flow chart of the method for switching calls between the set-top box and the fixed-line terminal provided by Embodiment 2 of the present invention. In this embodiment, when a call is initiated, the called set-top box is turned off, as shown in Fig. 3 , and its specific steps are as follows:

Step 301: The calling user sends a Session Initiation Protocol (SIP, Session Initiation Protocol) call invitation (Invite) message to the set-top box B of the called user through the set-top box A, and the message passes through the calling CSCF device of the IMS network and the calling multimedia communication application The server (AS, Application Server) and the called CSCF device arrive at the called multimedia communication AS.

The calling number of the Invite message is the number of set-top box A, and the called number is the number of set-top box B.

Step 302: The called multimedia communication AS receives the Invite message, and according to the called number in the message, finds out that the called user has set the simultaneous ringing function of the fixed-line terminal B' and the set-top box B, and at the same time uses the called CSCF device to try to Send an Invite message to the fixed-line terminal B' and set-top box B of the called user; since the set-top box B is not powered on, the called CSCF device will not receive the 180 ringing (Ring) message returned by the set-top box The multimedia communication AS returns a connection failure response (4XX) message, and when the Invite message sent to the fixed-line terminal B' reaches the fixed-line terminal B', the fixed-line terminal B' will ring and return a 180Ring message to the calling side, The 180Ring message will reach the set-top box A through the called CSCF device, the called multimedia communication AS, and the calling CSCF device.

Among them, the setting and inquiry of the incoming call simultaneous vibration function of the fixed-line terminal and the set-top box is the existing technology of the IMS network, and will not be described in detail here.

Step 303: When the called user finds that the fixed-line terminal B' is ringing, he first picks up the call through the fixed-line terminal B', and the fixed-line terminal B' sends a 200 response (200 OK) message carrying the number of B', which will be sent via The IMS network sends it to the calling set-top box A; after receiving the 200OK message, the set-top box A returns an acknowledgment (ACK) message, and then the calling set-top box A conducts a voice call with the called fixed-line terminal B'; during the voice call, the calling The user can inform the called user that he wants to make a video call with him, and ask the called user to turn on the set-top box B, and the set-top box B will be turned on after the called user agrees.

Step 304: In the user registration process initiated by the STB to the IMS network after the set-top box B is turned on, after the S-CSCF device determines that the registration is successful, it notifies the called multimedia communication AS that the user has registered through the third-party registration, and the called multimedia communication AS queries the called party. The service information registered by the user finds that the called user has registered the "call switching" service, and at the same time inquires the call session information of the called user, and finds that the called user has a call that can be switched to the set-top box B at this time, then through the called CSCF The device sends an Invite or Notify message to the set-top box B, and the set-top box B receives the Invite or Notify message, and returns a 180Ring or ACK message to the called multimedia communication AS through the called CSCF device.

The calling number in the Invite or Notify message is the number of set-top box A, the called number is the number of set-top box B, and carries a call switching instruction to instruct set-top box B to switch the current call to a video call.

If the called multimedia communication AS sends an Invite message to the set-top box B, the set-top box B returns a 180Ring message; if the called multimedia communication AS sends a Notify message to the set-top box B, then the set-top box B returns an ACK message.

Wherein, after the user starts the set-top box, the registration process of the set-top box is shown in Figure 3 in detail.

Step 305: After the set-top box B is powered on and receives the Invite or Notify message from the called multimedia communication AS, a pop-up interface prompts the called user that "there is currently a voice call that can be switched to a video call", and the calling number can be displayed in the interface. After the called user selects "confirm answer" on the set-top box B, the call is switched from the fixed-line terminal B' to the set-top box B.

Step 306: The set-top box B sends a 200 OK message to the called multimedia communication AS.

Step 307: The called multimedia communication AS receives the 200Ok message, queries the call switching service registered by the called user, and checks the fixed-line terminal B' number bound to the set-top box B in the service information to determine whether the called user has the right to The call is switched from the fixed-line terminal B' to the set-top box B.

Step 308: The called multimedia communication AS confirms that the handover is possible, and sends a call re-invite (re-Invite) message to the set-top box A, so as to notify the set-top box A to change the call information.

The calling number in the re-Invite message is the number of set-top box B, and the called number is the number of set-top box A.

Step 309: STB A receives the re-Invite message, informs the called party of the SDP information to be used in the new video call through a 200 OK message, and the message reaches STB through the IMS network.

The 200OK message carries the numbers of set-top boxes A and B, and at the same time carries the SDP information that set-top box A will use in the new video call.

Step 310: STB B receives the 200 OK message and returns an ACK message. At this time, the video call between the calling STB A and the called STB B is established.

Step 311: The calling set-top box A sends an on-hook (Bye) message, the called number in the message is the fixed-line terminal B', to notify the fixed-line terminal B' that the voice call will end; the fixed-line terminal B' receives the Bye message Afterwards, a 200 OK message is returned to the set-top box A, and the voice call between the calling set-top box A and the called fixed-line terminal B' ends.

Wherein, the Bye message sent to the called fixed-line terminal B' can also be sent by the called multimedia communication AS. Specifically, in step 308, after the called multimedia communication AS confirms that the handover is possible, it first sends a Bye message to the called fixed-line terminal B', and then sends a re-Invite message to the set-top box A. The Bye message passes through the called CSCF After the device arrives at the fixed-line terminal B', the fixed-line terminal B' returns a 200OK message, and the 200Ok message reaches the set-top box A via the called CSCF device, the called multimedia communication AS, and the calling CSCF device.

In addition, steps 304-306 can also be replaced by:

Step 304: After the set-top box B starts up and completes user registration with the IMS network, it sends a query message to the called multimedia communication AS whether there is currently a switchable call. The message carries the called user ID, and the called multimedia communication AS receives the message , query the service information registered by the called user, find that the called user has registered the "call switching" service, and query the call session information of the called user at the same time, find that the called user still has a call at this time and can switch to the set-top box B, then The called CSCF device returns a query response message to STB, the message carries the calling number: the number of STB A and a call switching instruction to instruct STB to switch the current call to a video call.

The called user ID carried in the query message sent by the set-top box B to the called multimedia communication AS whether there is currently a switchable call can be the number of the set-top box B, or other forms of user ID, as long as the called multimedia communication AS can guarantee It only needs to be able to query the service information registered by the called user and the call session information of the called user according to the user ID.

Step 305: Set-top box B receives the query response message and finds that the message carries a call switching instruction, then a pop-up interface prompts the called user that "there is currently a voice call that can be switched to a video call", and the calling number can be displayed on the interface, and the called user After selecting "confirm answer" on the set-top box B, the call is switched from the fixed-line terminal B' to the set-top box B.

Step 306: Set-top box B sends an Invite message to the called multimedia communication AS, the calling number in the message is the number of set-top box B, and the called number is the number of set-top box A.

In step 304 of the process shown in Figure 3, it is mentioned that: in the user registration process initiated by the set-top box B to the IMS network after the set-top box B is turned on, after the S-CSCF device determines that the registration is successful, it notifies the called multimedia communication AS that the user has registered through the third-party registration , the called multimedia communication AS queries the service information registered by the called user, and finds that the called user has registered the "call switching" service. on STB B. The specific implementation of this step is given below.

Fig. 4 is the flow chart of the registration method after the start-up of the set-top box provided by the embodiment of the present invention, as shown in Fig. 4, its specific steps are as follows:

Step 401: After the set-top box is turned on, the S-CSCF device of the IMS network sends a SIP registration (Register) message to the Home Subscriber Server (HSS, Home Subscriber Server) through the IMS network, and the message carries the user identification (User ID).

Step 402: The HSS receives the registration message, and searches for the user data and initial filter criteria (IFC, Initial Filter Criteria) corresponding to the user ID in the message, where the IFC indicates the multimedia communication AS that will be notified after the registration is successful .

Step 403: The S-CSCF device receives the user data and the IFC, and returns a 200 Ok message to the STB.

Step 404: The S-CSCF device sends a third-party registration message to the multimedia communication AS according to the multimedia communication AS indicated in the IFC to be notified after successful registration, and the message carries the user ID to notify the AS that the user registration is successful.

Step 405: The multimedia communication AS receives the third-party registration message and returns a 200 Ok message.

Step 406: the multimedia communication AS sends a Sh push (Sh-Pull) message to the HSS, and the message carries the user ID.

Step 407: The HSS receives the Sh-Pull message, returns a Sh-Pull response message to the multimedia communication AS, and the response message carries the user ID, requested data (Requested Data) and user registered service information (Service Information).

Step 408: The multimedia communication AS receives the Sh-Pull response message, confirms whether the user has registered the "call switching" service according to the service information registered by the user in the message, and queries the call session information of the user at the same time, and confirms whether the user has Calls can be switched to the set-top box.

Wherein, for the embodiment shown in FIG. 4, since the registration process of the set-top box needs to trigger a third-party registration process in the registration process after the set-top box is turned on, the multimedia communication AS needs to be improved as follows:

When the multimedia communication AS receives the video call service activation request and the call switching service activation request from the set-top box, the AS sends a Sh Subscription Notification (Sh-Subs-Notif) message to the HSS. Instructions for the three-party registration process, the user here is the user corresponding to the set-top box.

Fig. 5 is the flow chart of the method for switching calls between the set-top box and the mobile terminal provided by Embodiment 3 of the present invention. In this embodiment, when a call is initiated, the called set-top box is turned off, as shown in Fig. 5 , and its specific steps are as follows:

Step 501: The calling user sends a SIP Invite message to the set-top box B of the called user through the set-top box A, and the message reaches the called multimedia communication AS through the calling CSCF device, the calling multimedia communication AS, and the called CSCF device of the IMS network.

Step 502: The called multimedia communication AS receives the Invite message, and according to the called number in the message, finds out that the called user has set up the simultaneous ringing function of the fixed-line terminal B' and the set-top box B, and then tries to Send an Invite message to the called user's mobile terminal B' and set-top box B; since the set-top box B is not turned on, the called CSCF device will return the connection failure to the called multimedia communication AS because it cannot receive the 180Ring message returned by the set-top box B Respond to the (4XX) message, and when the Invite message sent to the mobile terminal B' reaches the mobile terminal B', the mobile terminal B' will ring and return a ringing (Alerting) message to the calling side.

Among them, the SIP Invite message sent by the called multimedia communication AS to the mobile terminal B' will reach the MGCF device via the called CSCF device, and the MGCF device converts the Invite message into a circuit domain message such as: Initial Address Message (IAM, Initial Address Message ) to the mobile terminal B', at the same time, the MGCF will send a sending routing information (SRI, Send RoutingInformation) message to the home location register (HLR, HomeLocation Register) to which the mobile terminal B' belongs: HLR-B', HLR-B' After receiving the SRI message, it will return an SRI response message to the MGCF device; after the mobile terminal B' receives the IAM, it will ring and return a ringing (Alerting) message to the calling side. After the Alerting message reaches the MGCF device, the MGCF The device will convert the message into a SIP message: 180Ring message. The 180Ring message will reach the called multimedia communication AS through the called CSCF device, and reach the calling set-top box A through the called CSCF device and the calling CSCF device.

Wherein, the setting and query of the incoming call simultaneous vibration function of the mobile terminal and the set-top box is the existing technology of the IMS network, and will not be described in detail here.

Step 503: When the called user finds that the mobile terminal B' is ringing, the mobile terminal B' picks up the phone first, and the mobile terminal B' sends a connection (Connect) message carrying the B' number, and the message reaches HLR-B' , HLR-B' converts the message into an answer message (ANM, Answer Message), and returns a connection confirmation (Connect ACK) message to the mobile terminal B' at the same time. After the ANM reaches the MGCF device, the MGCF device converts it into a SIP200OK message. The 200OK message will be sent to the calling set-top box A via the IMS network; after receiving the 200OK message, the set-top box A returns an ACK message, and then the calling set-top box A and the called mobile terminal B' carry out a voice call; during the voice call, the calling The calling user can inform the called user that he wants to make a video call with him, and ask the called user to turn on the set-top box B, and the set-top box B will be turned on after the called user agrees.

Step 504: In the user registration process initiated by the STB to the IMS network after the set-top box B is turned on, after the S-CSCF determines that the registration is successful, it notifies the called multimedia communication AS that the user has registered through the third-party registration, and the called multimedia communication AS queries the called party. The service information registered by the user finds that the called user has registered the "call switching" service, and at the same time inquires the call session information of the called user, and finds that the called user has a call that can be switched to the set-top box B at this time, then through the called CSCF The device sends an Invite or Notify message to the set-top box B, and the set-top box B receives the Invite or Notify message, and returns a 180Ring or ACK message to the called multimedia communication AS through the called CSCF device.

The calling number in the Invite or Notify message is the number of set-top box A, the called number is the number of set-top box B, and carries a call switching instruction to instruct set-top box B to switch the current call to a video call.

Wherein, after the user starts the set-top box, the registration process of the set-top box is shown in Figure 3 in detail.

Step 505: After the set-top box B is turned on and receives the Invite or Notify message from the called multimedia communication AS, a pop-up interface prompts the called user that "there is currently a voice call that can be switched to a video call", and the calling number can be displayed in the interface. After the called user selects "confirm answer" on the set-top box B, the call is switched from the mobile terminal B' to the set-top box B.

Step 506: STB B sends a 200 Ok message to the called multimedia communication AS.

Step 507: The called multimedia communication AS receives the 200Ok message, queries the call switching service registered by the called user, and checks the mobile terminal B' number bound to the set-top box B in the service information to determine whether the called user has the right to call The mobile terminal B' is switched to the set-top box B.

Step 508: The called multimedia communication AS confirms that the handover is possible, and sends a re-Invite message to the set-top box A to notify the set-top box A to change the call information.

The calling number in the re-Invite message is the number of set-top box B, and the called number is the number of set-top box A.

Step 509: STB A receives the re-Invite message, informs the called party of the SDP information to be used in the new video call through a 200 OK message, and the message reaches STB through the IMS network.

Step 510: STB B receives the 200 OK message and returns an ACK message. At this time, a video call is established between the calling STB A and the called STB.

Step 511: The calling set-top box A sends a Bye message, and the called number in the message is the mobile terminal B' to notify the mobile terminal B' that the voice call will end. When the Bye message reaches the MGCF device, the MGCF device converts it into release (REL, Release) message. After receiving the REC message, the mobile terminal B' returns a release confirmation (RLC) message. After the RLC message reaches the MGCF equipment, the MGCF equipment converts it into a 200OK message, and the 200Ok message arrives via the IMS network The calling set-top box A, and the voice call between the calling set-top box A and the called mobile terminal B' ends.

Wherein, the Bye message sent to the called mobile terminal B' can also be sent by the called multimedia communication AS. Specifically, in step 508, after the called multimedia communication AS confirms that the handover is possible, it first sends a message to the called mobile terminal B' Send a Bye message, and then send a re-Invite message to the set-top box A. When the Bye message reaches the MGCF device via the called CSCF device, the MGCF device converts it into a REL message. After receiving the REL message, the mobile terminal B' returns to the RLC message, after the RLC message reaches the MGCF equipment, the MGCF equipment converts it into a 200OK message, and the 200OK message reaches the set-top box A via the IMS network.

Since the mobile terminal is located in the circuit domain, the signaling sent from the IMS network to the mobile terminal B' needs to be converted by the MGCF equipment into circuit domain signaling, such as signaling No. 7; otherwise, the signaling sent from the mobile terminal B' , need to be converted into SIP signaling by the MGCF equipment and then sent to the IMS network.

Flowchart shown in Fig. 3, 5 all is aimed at the situation that the called set-top box shuts down when initiating a call, and the embodiment that the called set-top box is turned on when initiating a call is provided below:

Fig. 6 is the flow chart of the method for switching calls between the set-top box and the fixed-line terminal provided by Embodiment 4 of the present invention. In this embodiment, when a call is initiated, the called set-top box is powered on, as shown in Fig. 6 , and the specific steps are as follows:

Step 601: The calling user sends an Invite message to the set-top box B of the called user through the set-top box A, and the message reaches the called multimedia communication AS through the calling CSCF device, the calling multimedia communication AS, and the called CSCF device of the IMS network.

The calling number of the Invite message is the number of set-top box A, and the called number is the number of set-top box B.

Step 602: The called multimedia communication AS receives the Invite message, and according to the called number in the message, finds out that the called user has set the simultaneous ringing function of the fixed-line terminal B' and the set-top box B, and at the same time uses the called CSCF device to try to Send an Invite message to the fixed-line terminal B' and set-top box B of the called user; upon receiving the Invite message, the fixed-line terminal B' rings to remind the user that there is an incoming call, and returns a 180Ring message to the calling set-top box A; the set-top box B receives the Invite message , ring to remind the user that there is an incoming call, and return a 180Ring message to the called multimedia communication AS at the same time.

Step 603: When the called user finds that the fixed-line terminal B' is ringing, he first picks up the call through the fixed-line terminal B', and the fixed-line terminal B' sends a 200 OK message carrying the number of B', which will be sent to The calling set-top box A; and, when the called multimedia communication AS receives the 200OK message and finds that the fixed-line terminal B' goes off-hook first, it determines to release the ringing channel of the set-top box B, and sends a Cancel message to the set-top box B, The calling number in the message is the number of set-top box A, and the called number is the number of set-top box B. After the message reaches set-top box B via the called CSCF device, set-top box B stops ringing and returns a 200 OK message to the called multimedia communication AS.

Step 604: The called multimedia communication AS sends a Notify message to the set-top box B, and the message carries the information that the fixed-line terminal B' has answered the incoming call.

Step 605: Set-top box B receives the Notify message, and prompts the called user through the interface: If you want to switch to video call later, you can switch by remote control operation, etc., and returns an ACK message to the called multimedia communication AS.

Step 606: The called user chooses to switch the call to a video call through the operation of the set-top box B, and the set-top box B sends an Invite message to the called multimedia communication AS, and the message carries the SDP information to be used in the new video call.

Step 607: The called multimedia communication AS receives the Invite message, queries the call switching service registered by the called user, checks the fixed-line terminal B' number bound to the set-top box B in the service information, and determines whether the called user has the right to call Switch from the fixed-line terminal B' to the set-top box B.

Step 608: The called multimedia communication AS confirms that the handover is possible, and sends a re-Invite message to the set-top box A to notify the set-top box A to change the call information.

The calling number in the re-Invite message is the number of set-top box B, and the called number is the number of set-top box A.

Step 609: STB A receives the re-Invite message, informs the called party of the SDP information to be used in the new video call through a 200 OK message, and the message reaches STB through the IMS network.

The 200OK message carries the numbers of set-top boxes A and B, and at the same time carries the SDP information that set-top box A will use in the new video call.

Step 610: STB B receives the 200 OK message and returns an ACK message. At this time, a video call is established between the calling STB A and the called STB B.

Step 611: The calling set-top box A sends a Bye message, the called number in the message is the fixed-line terminal B', to notify the fixed-line terminal B' that the voice call will end; after receiving the Bye message, the fixed-line terminal B' sends The set-top box A returns a 200 OK message, and the voice call between the calling set-top box A and the called fixed-line terminal B' ends.

Wherein, the Bye message sent to the called fixed-line terminal B' can also be sent by the called multimedia communication AS. Specifically, in step 608, after the called multimedia communication AS confirms that the handover is possible, it first sends a Bye message to the called fixed-line terminal B', and then sends a re-Invite message to the set-top box A. The Bye message passes through the called CSCF After the device arrives at the fixed-line terminal B', the fixed-line terminal B' returns a 200OK message, and the 200Ok message reaches the set-top box A via the called CSCF device, the called multimedia communication AS, and the calling CSCF device.

As can be seen from the embodiment shown in Figures 3 and 5:

When the top box is turned off when a call is initiated, the embodiment of the present invention can automatically complete the judgment of whether the call can be switched to the set-top box through the multimedia communication AS after the set-top box is turned on, thereby prompting the user to switch the voice call on the call terminal to the video call on the set-top box , and the smooth switching of two calls is realized. During the switching process, the calling user feels that the call process is not interrupted, but is directly switched to a video call.

As can be seen from the embodiment shown in Figure 6:

When the top box is turned on when a call is initiated, it can also automatically complete the judgment of whether the call can be switched to the set-top box through the multimedia communication AS, thereby prompting the user to switch the voice call on the call terminal to the video call on the set-top box, and realizing two calls During the switching process, the calling user feels that the call process is not interrupted, but is directly switched to a video call.

FIG. 7 is a schematic diagram of the composition of the multimedia communication AS provided by Embodiment 1 of the present invention. The AS is located at the called user side of the IMS network. As shown in FIG. 7, the AS includes: a first module 71 and a second module 72, wherein:

The first module 71: receive the call invitation for the called set-top box sent by the calling set-top box, find out that the called set-top box and the called terminal have set the function of synchronous ringing for incoming calls, then communicate with the called set-top box and the called terminal at the same time The terminal initiates a call invitation; after receiving the ringing message returned by the called terminal, the ringing message is returned to the calling set-top box, but the ringing message returned by the called set-top box is not received, and the called set-top box is sent to the second module 72 Voice call indication when not powered on.

Second module 72: receive the voice call indication that the called set-top box is not turned on sent by the first module 71, during the voice call process between the calling party and the called party, if the called set-top box is found to be turned on, query the service information registered by the called user and Current call session information, if it is found that the called user has registered the call switching service, and it is found that the called user maintains a voice call that can be switched to the set-top box at this time, then notify the called set-top box to switch the current voice call to a video call, and After receiving the user confirmation handover instruction from the called set-top box, a call re-invitation is initiated to the calling set-top box, so that the calling set-top box and the called set-top box can establish a video call.

The second module 72 is further used for, after receiving the indication that the user confirms switching from the called set-top box, query the call switching service information registered by the called user, and check whether the called set-top box and the user account used by it in the service information are Possess the authority to switch the call from the calling terminal to the set-top box, if so, confirm that the switching is possible, and execute the action of initiating a call re-invitation to the calling set-top box.

The second module 72 is further used to, when it is found that the called set-top box is turned on, receive a third-party registration message from the S-CSCF device indicating that the called user has registered successfully, send a Sh push message to the HSS, and receive the Sh push response returned by the HSS message, the response message carries the service information registered by the called user, and the action of querying the service information registered by the called user is executed according to the service information registered by the called user.

The second module 72 is further used to receive an inquiry message from the called set-top box whether there is currently a switchable call, the message carries the called user ID, determines that the called set-top box is turned on, and executes the described call according to the called user ID. The action of querying the service information registered by the called user and the current call session information, wherein the query message of whether there is currently a switchable call is sent after the called set-top box is turned on and the user registration with the IMS network is completed.

The second module 72 is further configured to, after receiving the indication that the user confirms switching from the called set-top box, receive a call invitation message sent from the called set-top box, and the called number in the message is the number of the calling set-top box , start to execute the action of initiating a call re-invitation to the calling set-top box.

FIG. 8 is a schematic diagram of the composition of the multimedia communication AS provided by Embodiment 2 of the present invention. The AS is located at the called user side of the IMS network. As shown in FIG. 8, the AS includes: a first module 81 and a second module 82, wherein:

The first module 81: receive the call invitation for the called set-top box sent by the calling set-top box, find out that the called set-top box and the called terminal have set the function of synchronous ringing for incoming calls, then communicate with the called set-top box and the called terminal at the same time The terminal initiates a call invitation; receives the ringing message returned by the called terminal and the called set-top box; receives the off-hook message returned by the called terminal, but does not receive the off-hook message returned by the called set-top box, and then notifies the called set-top box The ringing channel is released, and the calling set-top box is notified that the called terminal has gone off-hook, and the voice call instruction that the called set-top box is turned on is sent to the second module 82 .

The second module 82: receiving the voice call instruction that the called set-top box is turned on sent by the first module 81, during the voice call between the calling party and the called party, if receiving the user confirmation from the called set-top box to switch to a video call instruction, Then initiate a call re-invitation to the calling set-top box, so that the calling set-top box and the called set-top box can establish a video call.

The second module 82 is further used for, after receiving the indication that the user confirms switching to a video call from the called set-top box, inquire about the call switching service information registered by the called user, and check the called set-top box and the information used by it in the service information. Whether the user account has the authority to switch the call from the call terminal to the set-top box, and if so, confirm that the switch can be performed, and perform the action of initiating a call re-invitation to the calling set-top box.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection.

Claims (20)

1. A method for switching calls between a set-top box and a call terminal, characterized in that the method comprises: During the voice call between the calling set-top box and the called terminal, the called multimedia communication AS discovers that the called set-top box is turned on, and queries the service information registered by the called user and the current call session information. If it is found that the called user still has a voice call that can be switched to the set-top box at this time, it will notify the called set-top box to switch the current voice call to a video call, and initiate a call re-invitation to the calling set-top box so that the calling set-top box and the called set-top box can establish In the video call, the call between the calling party and the called party is switched from the calling terminal to the called set-top box, and the calling terminal is a terminal other than the set-top box. 2. The method according to claim 1, wherein the called multimedia communication AS further includes before finding that the called set-top box is turned on: The called multimedia communication application server AS receives the call invitation for the called set-top box sent by the calling set-top box, and finds out that the called set-top box and the called terminal have set the function of synchronous ringing for incoming calls, and simultaneously sends a call request to the called set-top box and the called terminal. Call the call terminal to initiate a call invitation; The called multimedia communication AS receives the ringing message returned by the called terminal, and returns the ringing message to the calling set-top box. 3. The method according to claim 1, wherein after the called multimedia communication AS notifies the called set-top box to switch the current voice call to a video call and before initiating a call re-invitation to the calling set-top box, it further comprises: the called set-top box The multimedia communication AS receives an instruction from the called set-top box to confirm switching. 4. The method according to claim 1, wherein the called multimedia communication AS further comprises: The called multimedia communication AS queries the call switching service information registered by the called user, checks whether the called set-top box and the user account used by it in the service information have the authority to switch the call from the calling terminal to the set-top box, and if so, confirm that the switch can be made, Execute the action of initiating a call re-invitation to the calling set-top box. 5. The method according to claim 1, wherein the called multimedia communication AS finds that the called set-top box is turned on, and querying the service information registered by the called user includes: After the called user registers to the IMS network, the S-CSCF learns the called multimedia communication AS to be notified after the user successfully registers from the initial filtering rule IFC in the user data downloaded from the home subscriber server HSS, and the S-CSCF notifies the called party The called user of the multimedia communication AS completes the IMS registration, and after learning that the called user completes the IMS registration, the called multimedia communication AS fetches the service information registered by the called user from the HSS. 6. The method according to claim 1, wherein said called multimedia communication AS discovers that the called set-top box is switched on comprising: The called multimedia communication AS receives a query message from the called set-top box whether there is currently a switchable call, and the message carries the called user ID. 7. The method according to claim 1, wherein said called multimedia communication AS querying the service information registered by the called user and the current call session information includes: According to the called user identification, query the service information registered by the called user and the current call session information, if the service information registered by the called user indicates that the called user has opened the call switching service, then check the current call session information and judge Whether the called user account or other user accounts associated with it are currently holding a voice call that can be switched to the set-top box. User Account. 8. The method according to claim 1, wherein the called multimedia communication AS further comprises: The called multimedia communication AS receives the call invitation message sent by the called set-top box, the called number in the message is the number of the calling set-top box, and starts to execute the action of initiating a call re-invitation to the calling set-top box. 9. A method for switching calls between a set-top box and a call terminal, characterized in that the method comprises: The called multimedia communication AS receives the call invitation from the calling set-top box for the called set-top box, and finds out that the called set-top box and the called terminal have set the simultaneous ringing function for incoming calls, then simultaneously communicates with the called set-top box and the called terminal. The terminal initiates a call invitation; The called multimedia communication AS receives the ringing message returned by the called terminal and the called set-top box; When the called multimedia communication AS receives the off-hook message returned by the called terminal, it notifies the called set-top box to release the ringing channel, and notifies the calling set-top box that the called terminal has gone off-hook; During the voice call between the calling party and the called party, after receiving the instruction from the called set-top box to switch to a video call, the called multimedia communication AS initiates a call re-invitation to the calling set-top box, so that the calling set-top box and the called set-top box can establish a video call. The calling between the calling party and the called party is switched from the calling terminal to the called set-top box, and the calling terminal is a terminal other than the set-top box. 10. The method according to claim 9, wherein the called multimedia communication AS further comprises: The called multimedia communication AS queries the call switching service information registered by the called user, checks whether the called set-top box and the user account used by it in the service information have the authority to switch the call from the calling terminal to the set-top box, and if so, confirm that the switch can be made, Execute the action of initiating a call re-invitation to the calling set-top box. 11. A multimedia communication AS, located at the called user side of the IMS network, characterized in that the AS includes: The first module: During the voice call between the calling set-top box and the called terminal, if the called set-top box is found to be powered on, query the service information registered by the called user and the current call session information, and if it is found that the called user has registered the call switching service , and find that the called user still has a voice call that can be switched to the set-top box at this time, notify the called set-top box to switch the current voice call to a video call, and initiate a call re-invitation to the calling set-top box, so that the calling set-top box and the called set-top box can establish a video call Conversation, the call between the caller and the called is switched from the called terminal to the called set-top box, and the called terminal is a terminal other than the set-top box. 12. The AS according to claim 11, wherein the AS further comprises: The second module: receive the call invitation for the called set-top box sent by the calling set-top box, check that the called set-top box and the called terminal have set the simultaneous vibration function for incoming calls, and send the call invitation to the called set-top box and the called terminal at the same time Initiate a call invitation; receive the ringing message returned by the called terminal, and return the ringing message to the calling set-top box. 13. The AS according to claim 11, wherein the first module is further configured to, before initiating a call re-invitation to the calling set-top box, receive an instruction from the called set-top box to confirm switching. 14. The AS according to claim 11, wherein the first module is further configured to query the call switching service information registered by the called user after notifying the called set-top box to switch the current voice call to a video call, Check whether the called set-top box and the user account used by it in the service information have the authority to switch the call from the calling terminal to the set-top box. 15. The AS according to claim 11, wherein the first module is further configured to, after the called user completes the IMS registration, pull the service information registered by the called user from the home subscriber server (HSS). 16. The AS according to claim 11, wherein the first module is further configured to receive an inquiry message from the called set-top box whether there is currently a switchable call 17. The AS according to claim 11, wherein the first module executes the action of querying the service information registered by the called user and the current call session information according to the called user ID. 18. The AS according to claim 11, wherein the first module is further configured to, after notifying the called set-top box to switch the current voice call to a video call, receive a call invitation message sent by the called set-top box, The called number in the message is the number of the calling set-top box, and the action of initiating a call re-invitation to the calling set-top box is started. 19. A multimedia communication AS, located at the called user side of the IMS network, characterized in that the AS includes: The first module: receive the call invitation for the called set-top box sent by the calling set-top box, check that the called set-top box and the called terminal have set the function of simultaneous ringing for incoming calls, and send the call invitation to the called set-top box and the called terminal at the same time Initiate a call invitation; receive the ringing message returned by the called terminal and the called set-top box; receive the off-hook message returned by the called terminal, notify the called set-top box to release the ringing channel, and notify the calling set-top box to the called terminal has been off-hook, and the call terminal is a terminal other than the set-top box; The second module: during the voice call between the caller and the called party, after receiving the instruction from the called set-top box to confirm the switch to the video call, initiate a call re-invitation to the calling set-top box, so that the caller and the called set-top box can establish a video call , switch the call between the caller and the called from the called terminal to the called set-top box. 20. The AS according to claim 19, wherein the second module is further configured to query the call registered by the called user after receiving the instruction from the called set-top box that the user confirms switching to a video call Switch the service information, check whether the called set-top box and the user account used by it in the service information have the authority to switch the call from the calling terminal to the set-top box, if so, confirm that the switch can be made, and execute the above-mentioned procedure of initiating a call re-invitation to the calling set-top box action.