CN111049778A

CN111049778A - Method and related device for controlling video color ring playing

Info

Publication number: CN111049778A
Application number: CN201811189894.8A
Authority: CN
Inventors: 孟斌
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-10-12
Filing date: 2018-10-12
Publication date: 2020-04-21
Anticipated expiration: 2038-10-12
Also published as: WO2020073999A1; CN111049778B

Abstract

The embodiment of the invention discloses a method and a related device for controlling video color ring playing. The method comprises the following steps: calling user equipment sends a calling request message to a color ring server; after receiving the request message, the color ring server sends a call response message to the calling user equipment; and the calling user equipment and the color ring server carry out audio and video media negotiation, and play the video color ring after the negotiation is finished. And the color ring server and the calling user equipment can inform the calling user of the calling state and display the calling state in the video color ring in the form of subtitles through video synthesis. The embodiment of the invention provides a method for playing the video color ring back tone in the process of paging the called party, thereby prolonging the playing time of the video color ring back tone and improving the user experience of the video color ring back tone.

Description

Method and related device for controlling video color ring playing

Technical Field

The present invention relates to the field of multimedia services, and in particular, to a method and a related apparatus for controlling video color ring playing.

Background

With the introduction of voice services based on an Internet Protocol multimedia subsystem (IMS), voice call quality is significantly improved compared with the 2/3G era, and high-definition voice calls and video calls can be provided, while polyphonic ringtone services are important voice value-added services for operators, and compared with standard-definition polyphonic ringtone experiences under 2/3G, the polyphonic ringtone services based on the IMS can provide high-definition polyphonic ringtone and video polyphonic ringtone experiences.

The video color ring is that when a calling party initiates an audio or video call to a called color ring user, a section of video content can be seen in the process of waiting for call connection. The video color ring user can make or upload personalized video content, or select from a video library of an operator. Under the current solution of video color ring, the calling user equipment can play the video color ring only after the called user equipment rings, and the playing time of the video color ring is short.

Disclosure of Invention

The embodiment of the invention provides a method and a device for controlling video color ring playing, which aim to solve the limitation that the video color ring playing process can be started only after called user equipment rings in the prior art. Particularly, various solutions provided below are adopted, which is beneficial to prolonging the playing time of the video color ring back tone and improving the user experience of the video color ring back tone.

In a first aspect, an embodiment of the present invention provides a method for controlling video color ring playing, which may include: the color ring server receives a call request message, wherein the request message carries the identification of a calling party. The color ring server starts the flow of playing the video color ring early and sends a call response message to the calling user equipment corresponding to the calling user identification. And the polyphonic ringtone server and the calling user equipment carry out audio and video media negotiation, and send a video polyphonic ringtone media stream to the calling user equipment after the audio and video media negotiation is finished. Based on the scheme, the color ring server sends the call response message to the calling user equipment, and the playing flow of the video color ring is started in advance without waiting for the process of paging the called user equipment, so that the calling user can watch the video color ring in the time of paging the called user, and the playing time of the video color ring is prolonged under the condition of not increasing the call continuing time.

Optionally, after receiving the call request message sent by the calling user equipment, the color ring server determines that the request message carries an indication that a Telephone Application Server (TAS) in the calling domain has the capability of playing the video color ring early. Based on the determination, the color ring server starts the flow of playing the video color ring early and sends a call response message to the calling user equipment. And the indication indicates that the network elements of the calling domain all have the capability of playing the video color ring early. Based on the scheme, when the equipment in the calling domain has the capability of playing the video color ring early, the color ring server starts the flow of playing the video color ring early, so that the problems of wrong response rate statistics and the like caused by the fact that the equipment in the calling domain does not support the function of playing the video color ring early are avoided.

Optionally, the call response message sent by the color ring server to the calling user equipment is 183 message. Based on the scheme, the CRBT server replaces the called user equipment to send 183 messages to the calling user equipment, and the 183 messages are used for responding to the call request of the calling UE, responding to the SDP negotiation request of the calling UE and ending the SDP negotiation process. Therefore, the scheme does not need to wait for the process of paging the called user equipment, the playing flow of the video color ring is started in advance, and the playing time of the video color ring is prolonged under the condition that the call continuing time is not increased.

Optionally, after receiving the call request message, the color ring server sends a notification message to a call session control function device (CSCF) in the called domain, where the notification message is used to notify the CSCF that the call is to play a video color ring in advance. The notification message may be 183 message or Invite message, and the color ring server adds an indication that the early-playing video color ring is activated in the notification message. Based on the scheme, the color ring server transmits the information that the video color ring is played in advance by the call to the CSCF of the called domain, and the CSCF can also transmit the information to other network elements of the calling domain and the called domain, such as a Telephone Application Server (TAS) and the like. Therefore, errors of response rate statistics and the like caused by processing the call by other network elements through the process of the prior art are avoided.

Optionally, the color ring server receives a call state prompt message sent by the TAS of the called domain, and notifies the calling user of a corresponding call state prompt in the prompt message. The call state alerting message may be an INFO message. The INFO message may carry information of the call, a prompt of the call status, caption information and caption type of the call status, etc. Based on the scheme, the calling user can obtain the calling state information in time. Based on this information, the calling user can autonomously choose to end the call or continue to wait for the call to be picked up.

Optionally, the method for the color ring server to notify the calling user of the call state prompt may be to synthesize the call state prompt into a video color ring. Based on the scheme, the calling user can obtain the prompt of the calling state while watching the video polyphonic ringtone, and the user experience is improved.

Optionally, when a call failure occurs, the call state prompt is a call failure prompt, and the call failure prompt carries a call failure cause value. The call failure cause value may be a code value corresponding to a cause of a call failure condition, for example, 000 corresponding to unavailability of the called network, 001 corresponding to that the called UE is in a call, 010 corresponding to that the called UE has powered off, 011 corresponding to that the call is not answered by any person, 100 corresponding to that the call is hung up, and the like. Based on the scheme, when a call failure condition occurs, the calling user can be prompted in time and the reason of the call failure. And when the call fails, the calling user can also continue to watch the video color ring.

Optionally, when the called user equipment rings, the call state prompt is a prompt that the called user equipment rings. Based on the scheme, when the called user is successfully paged, the calling user can be prompted in time.

In a second aspect, an embodiment of the present invention provides a method for controlling video color ring playing, which may include: the calling user equipment sends a calling request message to the color ring server and then receives a calling response message returned by the color ring server. And the calling user equipment and the color ring server carry out audio and video media negotiation, and the video color ring is played after the audio and video media negotiation is finished. Based on the scheme, the calling user equipment starts the negotiation and playing process of the video color ring after receiving the call response message sent by the color ring server, and does not need to wait for the process of paging the called user equipment, namely, the playing process of the video color ring is started in advance, so that the calling user can watch the video color ring in the time of paging the called user, and the playing time of the video color ring is prolonged.

Optionally, the call response message sent by the color ring server and received by the calling user equipment is 183 message. Based on the scheme, the CRBT server replaces the called user equipment to send 183 messages to the calling user equipment, and the 183 messages are used for responding to the call request of the calling UE, responding to the SDP negotiation request of the calling UE and ending the SDP negotiation process. Therefore, the scheme does not need to wait for the process of paging the called user equipment, the playing flow of the video color ring is started in advance, and the playing time of the video color ring is prolonged under the condition that the call continuing time is not increased.

Optionally, when the calling user equipment has video composition capability, an indication of video information composition capability may be carried in the call request message. Based on the scheme, the calling user equipment can inform whether the network side has the video synthesis capability or not when initiating the call.

Optionally, the calling user equipment receives the call state prompt message, and synthesizes a corresponding call state prompt in the prompt message into the video color ring. The call state alerting message may be an INFO message. The INFO message may carry information of the call, a prompt of the call status, caption information and caption type of the call status, etc. Based on the scheme, the calling user can obtain the prompt of the calling state while watching the video polyphonic ringtone, and the user experience is improved. And the calling user can autonomously choose to end the call or continue to wait for the call to be answered according to the prompt.

Optionally, when a call failure occurs, the call state prompt is a call failure prompt, and the call failure prompt carries a call failure cause value. The call failure cause value may be a code corresponding to a cause of a call failure, for example, 000 corresponding to unavailability of the called network, 001 corresponding to the called UE being in a call, 010 corresponding to the called UE being powered off, 011 corresponding to no-person call answering, 100 corresponding to the call being hung up, and the like. Based on the scheme, when a call failure condition occurs, the calling user can be prompted in time and the reason of the call failure. And when the call fails, the calling user can also continue to watch the video color ring.

In a third aspect, an embodiment of the present invention provides a color ring server for controlling playing of a video color ring, where the color ring server has a function of implementing the method according to the first aspect. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a fourth aspect, an embodiment of the present invention provides a color ring server for controlling playing of a video color ring, where the color ring server may include: a transceiver, a processor, a memory and a bus; the memory is used for storing computer execution instructions, the processor is connected with the memory through the bus, and when the color ring server runs, the processor executes the computer execution instructions stored in the memory, so that the color ring server executes the method for controlling video color ring playing according to any one of the first aspect.

In a fifth aspect, an embodiment of the present invention provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are executed on a computer, the computer is enabled to execute the method for controlling video color ring playing in any of the first aspects. The storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

In a sixth aspect, an embodiment of the present invention provides a computer program product containing instructions, which when run on a computer, enables the computer to execute the method for controlling video color ring playing of any one of the above first aspects.

The technical effects brought by any one of the design manners in the third aspect to the sixth aspect may be referred to the technical effects brought by different design manners in the first aspect, and are not described herein again.

In a seventh aspect, an embodiment of the present invention provides a calling user equipment for controlling playing of a video polyphonic ringtone, where the calling user equipment has a function of implementing the method corresponding to the second aspect. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In an eighth aspect, an embodiment of the present invention provides a calling user equipment for controlling playing of a video polyphonic ringtone, which may include: a transceiver, a processor, a memory and a bus; the memory is used for storing computer execution instructions, the processor is connected with the memory through the bus, and when the calling user equipment runs, the processor executes the computer execution instructions stored in the memory, so that the calling user equipment executes the method for controlling video color ring playing according to any one of the second aspects.

In a ninth aspect, an embodiment of the present invention provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are executed on a computer, the computer is enabled to execute the method for controlling video color ring playing in any of the second aspects. The storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

In a tenth aspect, an embodiment of the present invention provides a computer program product containing instructions, which when run on a computer, enables the computer to execute the method for controlling video color ring playing of any one of the above second aspects.

For technical effects brought by any one of the design manners in the seventh aspect to the tenth aspect, reference may be made to technical effects brought by different design manners in the second aspect, and details are not repeated here.

These and other aspects of the invention are apparent from and will be elucidated with reference to the embodiments described hereinafter.

Drawings

FIG. 1 is a system architecture diagram provided in an embodiment of the present invention;

fig. 2 is a schematic diagram of an embodiment of a method for controlling video color ring playing according to an embodiment of the present invention;

FIG. 3 is a diagram of an embodiment of a CRBT server in the embodiment of the present invention;

FIG. 4 is a diagram of an embodiment of a calling user device in an embodiment of the present invention;

fig. 5 is a schematic diagram of another embodiment of a color ring server according to an embodiment of the present invention;

fig. 6 is a schematic diagram of another embodiment of the calling user equipment in the embodiment of the present invention.

Detailed Description

The embodiment of the invention provides a method and a related device for controlling the playing of a video color ring, which are used for prolonging the playing time of the video color ring and realizing the function of playing the video color ring by fully utilizing the time of paging a called party.

Fig. 1 is an application scenario diagram of a method for controlling video color ring playing according to an embodiment of the present invention, which may include: a calling User Equipment (UE), a called UE, an IMS domain Core network (IMS Core), and an Evolved Packet Core (EPC). The color ring Server, AS a support for important telecommunication value-added services, may include a color ring Application Server (CATS) located in the called IMS Core. The signaling plane of the color ring server is connected with a service-Call Session control function (S-CSCF), and the media plane is connected with a Session Border Controller (SBC) to provide media playback of color ring for users. The state video prompting server is positioned in the called IMS Core and used for realizing the function of prompting the calling state in the video, for example, when the calling fails, prompts such as 'a user who calls is not in a service area', 'the user who calls is off', 'the user who calls is in a call', and 'no person answers the call'; when the called user equipment rings, a prompt of 'the telephone called by you rings' and the like is displayed in the played video color ring. The status video prompt server can be an independent newly-built network element entity, and can also utilize an existing server to realize the functions thereof, such AS CAT AS.

In the architecture diagram shown in fig. 1, the calling IMS domain may include a calling IMS Core and a calling EPC. The calling IMSCore includes: home Subscriber Server (HSS), Telephony Application Server (TAS), query-type Call Session Control Function (I-CSCF), Proxy-type Call Session Control Function (P-CSCF), Service-type Call Session Control Function (S-CSCF), and Session Border Control (SBC). The EPC comprises a serving Gateway (S-GW), a packet data network Gateway (P-GW); and a Mobile Management Entity (MME). Besides the network elements described in the calling IMS domain, the called IMS domain also comprises a CAT AS, a status video prompt server, a called EPC and the like.

A brief description of some of the above mentioned network elements follows:

and S-CSCF: and the system is responsible for registration, authentication control, session routing and service triggering control of the user, and maintains session state information and the like.

I-CSCF: assignment and query of the S-CSCF responsible for user registration, etc.

And the P-CSCF: proxies responsible for signaling and messages, etc.

TAS: mainly responsible for the control and service of calls, providing a plurality of logical function points, including Multimedia Telephony Application Server (MMTel AS). The MMTel AS provides basic services and supplementary services of the multimedia telephone.

HSS: the system is a user database system for storing user subscription information and location information.

SBC: providing secure access and media processing.

MME: mainly responsible for session management, mobility management, call handover, etc.

S/P-GW: which is responsible for routing, forwarding, and bearer management of packet data, etc.

CATAS: the service equipment is used for the color ring back tone service and is responsible for continuing a called party, triggering color ring back tone playing and the like when the color ring back tone is called.

The state video prompt server: the service that the calling system is under various scenes (such as user power-off, user talking, talking on and the like) can be provided for the user, and the video prompt can be customized in a personalized way.

The IMS domain coloring ring back tone SIP routing trigger brief description:

the IMS domain color ring triggering mainly follows 3GPP 24.182 protocol specification, a called IMS domain triggering principle is adopted, when a request (Invite) message initiated by a calling IMS domain is sent to a called IMS domain S-CSCF, the called S-CSCF triggers a color ring server through Initial Filter Criteria (iFC) signing information of a user, after the color ring server processes, a calling message returns to the S-CSCF, and then subsequent processes such as paging called user equipment and the like are carried out. The color ring server starts a playback flow to the calling user after receiving the called ringing message (180), and when the called user is off-hook, the color ring server initiates a Re-request (Re-Invite) flow to complete the media negotiation between the calling and called users and finally complete the conversation between the calling and called users.

In the prior art, the polyphonic ringtone server starts the playing process of the video polyphonic ringtone only after the called user equipment rings (180). However, the time between the reception of the Invite request from the color ring server and the ringing of the called user equipment is about 2-6 seconds, which is not utilized. In the technical scheme of the invention, the invention provides a method and a related device for controlling the playing of the video color ring, so that the color ring server starts the playing flow of the video color ring after receiving an Invite request initiated by a calling party. The invention can also realize the prompt function of the call state, and one method is to utilize a state video prompt server to synthesize the call state information into a video color ring and display the video color ring on the screen of the calling user equipment. Another approach is for the calling user device to have video compositing capability and display the status information of the call on the screen. When watching the video, the calling user can simultaneously see the prompt information of the calling state.

The technical solution of the present invention is described below by way of examples. The following description takes an audio call as an example, but any other type of communication service or multimedia service, such as a video call, is also applicable. In addition, it should be noted that the early playing of the video polyphonic ringtone in the embodiment of the present invention refers to that when the polyphonic ringtone server receives a call request initiated by a calling user equipment, a playing flow of the video polyphonic ringtone is started, that is, the video polyphonic ringtone is played without waiting for a process of paging a called party, and the playing of the video polyphonic ringtone in advance or the opening of the video polyphonic ringtone for a second time, and the like, which is not limited in the embodiment of the present invention.

Fig. 2 is a schematic diagram illustrating an embodiment of a method for controlling video color ring playing according to an embodiment of the present invention. The method for controlling video color ring playing provided by the embodiment of the present invention can be applied to the application scenario provided in fig. 1, and is described with a CAT AS a color ring server in the following embodiment drawings. In addition, it should be noted that the state video prompting server may be implemented by an independent network element entity, or by using other network element entities that have already services and can simultaneously implement the call state prompting function. The embodiment of the invention comprises the following steps:

201. calling UE initiates an audio call;

202. the color ring server starts a flow of playing the video color ring early;

203. the called IMS domain pages the called user equipment;

204. the called user equipment rings;

205. the call ends.

The embodiment of the invention starts the process of playing the video color ring after the color ring server receives the call request of the calling UE, and the process of the called IMS domain paging the called user equipment is parallel to the process of playing the video color ring early, thereby solving the limitation that the playing of the video color ring is started only after the called paging and ringing are waited in the prior art, and prolonging the playing time of the video color ring.

The specific signaling steps are described as follows:

the initiating of the audio call by the calling UE in step 201 may include:

1. a calling User Equipment (UE) sends an Invite request (Invite) message, which includes Session Description Protocol (SDP) information of the calling UE, a calling User identification (caller ID), a called User identification (callee ID), and an audio call. The calling UE is a device corresponding to the caller ID, for example, the caller ID is a caller number, and the caller device is a handset into which a SIM card of the number is inserted. The calling UE is the requesting entity, refer, so the SDP of the calling UE may be denoted as SDP _ O.

Optionally, when the calling UE has video composition capability, an indication that the calling UE has video composition capability may be carried in the Invite message, for example, adding + g.3gpp.subtitles in the Contact header field.

Optionally, when receiving the Invite message, the call session control function device (P-CSCF, I/S-CSCF) in the calling domain adds, to the Invite message, an indication that each has the capability of playing a video color ring early if the function of playing a video color ring early is supported. And a Telephone Application Server (TAS) of the calling domain detects whether all the call session control function equipment have the capability of early playing the video color ring, if all the call session control function equipment have the capability and the TAS also has the capability, the TAS adds an indication that the TAS has the capability of early playing the video color ring when forwarding the Invite message to the called IMS domain, and the indication also indicates that all the network elements of the calling domain have the capability of early playing the video color ring. For example, when the P-CSCF and the I/S-CSCF add their own record-route records in the Invite message, a g.3gpp.cat-pre character string is added as an indication of having the capability of playing the video color ring early. When the TAS reconstructs a record-route header field, if all current record-route records have g.3gpp.cat-pre character strings and the TAS also has the capability of early playing the video color ring, the TAS adds the g.3gpp.cat-pre character strings in the new record-route header field as an indication that the TAS has the capability of early playing the video color ring, and the indication also indicates that the P-CSCF, the I/S-CSCF and the TAS of a calling domain all have the capability of early playing the video color ring;

2. after receiving the request, the Call Session Control Function (CSCF) of the called IMS domain transmits the Invite message to a color ring application server (CAT AS);

202. the color ring server starts the flow of playing the video color ring early. Specifically, the method can comprise the following steps:

3. after the CAT AS receives the request, the process of playing the video color ring early is started according to the subscription information or local configuration of the user, for example, whether the function of playing the video color ring early is activated is checked according to the subscription information of the called user, and if the function is activated, the process of playing the video color ring early is started.

Optionally, after the CAT AS receives the request, it may detect whether the network elements of the calling domain all have the capability of playing the video color ring early. When the network elements of the calling domain all have the capability of playing the video color ring early, the CAT AS starts the flow of playing the video color ring early. For example, when the Invite message carries an indication that the TAS of the calling domain has the capability of playing the video coloring ring back tone early, the CAT AS starts a process of playing the video coloring ring back tone early. The indication may be that there is a g.3 gpp.cat-pressing string in the record-route record of the TAS. When receiving the Invite message, the TAS in the calling domain deletes the record-route record of the call session control function device, and when the TAS reconstructs the record-route header field and adds the g.3gpp.cat-pre character string, it has been confirmed that the call session control function device and the TAS themselves have the capability of playing the video polyphonic ringtone early, so the CAT AS detects that the TAS in the Invite message, which carries the calling domain, has the indication of the capability of playing the video polyphonic ringtone early, and can obtain that the network elements in the calling domain all have the capability of playing the video polyphonic ringtone early.

The CAT AS forwards an Invite message to the CSCF in the called domain, where the Invite message may be an announcement message used to inform the CSCF in the called domain that the call has played a video ring tone in advance, and the CSCF in the called domain also informs other network elements in the called domain. For example, a prompt that an early-play video color ring is activated is added to the Invite message, and the prompt that the early-play video color ring is activated can have various expression modes, for example, the Invite message carries Contact: + g.3gpp.cat-pressing-active;

and 4-5, the CAT AS sends 183 messages to the CSCF, and the CSCF forwards the 183 messages to the calling UE. The 183 message includes the responsive SDP information (SDP _ a). The 183 message is a call answer message, constructed by the CAT AS. The CAT AS replaces the called UE to send 183 messages to the calling UE, and is used for responding to the calling request message of the calling UE, responding to the SDP negotiation request of the calling UE, and ending the SDP negotiation process. The 183 message may carry SDP information of CAT AS, or may also be fictitious SDP information, for example, an IP port number in SDP is not used externally (a loopback address of a 127 network segment, or a private network address of a 192 network segment, etc.).

The CAT AS also adds a prompt that the video coloring ring back tone that is played early is activated in the 183 message, where the 183 message may also be an informing message for informing the CSCF that the video coloring ring back tone is played early in the call, and the CSCF may also inform other network elements of the called domain and the network element of the calling domain. The prompt that the color ring tone of the early-playing video is activated can be expressed in various ways, for example, 183 message carries Alert-info urn service prediction.

183 message is sent by the called UE to the calling UE in the prior art procedure, indicating that the called UE has received the call request message, i.e. the called UE has successfully paged. For the process of playing the video color ring early, the 183 message is sent to the calling UE by the CAT AS, and is used to replace the called UE to respond to the call request message of the calling UE, and cannot indicate that the called UE has been paged successfully. Therefore, when the network elements of the calling domain and the called domain perform the answer rate statistics, the 183 message with the early playing video color ring prompt is not counted as the called UE has successfully paged. Optionally, the network element performing the response rate statistics may perform individual statistics on 183 messages with already played video color ring activation prompts;

6-7, after the calling UE receives the 183 message, returning a confirmation (PRACK) message to indicate that the 183 message is received;

8-9, CAT AS returns 200OK information to calling UE, wherein the 200OK information carries PRACK information and indicates that the called side has received the PRACK information;

10-11, the CAT AS sends an Update (Update) message to the calling UE, wherein the Update message includes SDP information of the CAT AS, and the CAT AS is a request entity Offerer, so that the SDP of the CAT AS can be represented AS SDP _ O.

12-13, the calling UE receives the Update message and sends a 200OK message to the CSCF.

If the calling UE supports the audio/video color ring media, carrying out audio/video media negotiation according to the audio/video color ring media SDP information carried in the Update message and the media capability information of the calling UE, obtaining an audio/video media negotiation result, and sending a 200OK message to CAT AS, wherein the 200OK message carries the audio/video media negotiation result; and the CATAS sends the video color ring to the calling UE, and the calling UE displays the video color ring.

It should be noted that, in the embodiment of the present invention, an audio call is taken AS an example for illustration, and the SDP _ O carried in the Invite message sent by the calling UE in step 1 may not contain video media related information or the contained video media information is unsupported by the CAT AS, so that the CAT AS in steps 4 to 5 sends 183 messages to perform SDP negotiation response, which cannot guarantee that the audio/video color ring media can be successfully negotiated. In the step 10-11, CAT AS sends Update message to carry out audio and video media renegotiation. When the calling UE initiates a video call or the calling UE initiates an audio call, the carried SDP already contains audio media and video media related information at the same time, and the video media related information is supported by CAT AS, the CAT AS in steps 1-5 can complete audio and video color ring back tone media negotiation with the calling UE, and the audio and video media re-negotiation in steps 10-13 in this section can be unnecessary.

203. The called IMS domain pages the called user equipment. It should be noted that the 203-segment signaling and the 202-segment 4-13 step signaling are parallel. Specifically, the method can comprise the following steps:

14. and the CSCF transmits an Invite message to the TAS of the called domain, wherein the Invite message carries the SDP of the calling UE and the prompt that the early playing video color ring is activated. The TAS then returns an Invite message to the CSCF. It should be noted that, in the embodiment of the present invention, the TAS is deployed after the CAT AS for example, and the TAS may obtain the information that the current call starts playing the video ring back tone in advance from the prompt that the early play video ring back tone is activated, which is carried in the Invite message. For the situation that the TAS is deployed before the CAT AS, which is not shown in the embodiment of the present invention, the TAS may obtain the information that the current call starts playing the video polyphonic ringtone in advance from the prompt that the early playing video polyphonic ringtone is activated, which is carried in the 183 message;

15. the CSCF transparently transmits the Invite message to the called UE;

16. after receiving the Invite message, the called UE returns a 183 message to the CSCF, where the 183 message includes SDP information of the called UE, and the called UE is a response entity answer, so that the SDP of the called UE may be denoted as SDP _ a. The 183 message indicates that the called UE has received the call request message, i.e. the called UE has paged successfully. When the network element of the calling domain and the network element of the called domain perform the response rate statistics, the fact that the called UE has successfully paged after receiving the 183 message (without the early playing video color ring prompt) can be counted;

17. the CSCF sends the 183 message to the TAS; the TAS returns the 183 message to the CSCF;

18. CSCF sends 183 message to CAT AS;

19. after CAT AS receives 183 message, it returns confirmation (PRACK) message, which indicates that 183 message has been received;

20. CSCF sends PRACK message to TAS; the TAS returns the PRACK message to the CSCF;

21. the CSCF sends the PRACK message to the called UE;

22. after receiving the PRACK message, the called UE returns a 200OK message, wherein the 200OK message carries PRACK information and indicates that the called UE has received the PRACK message;

23. CSCF sends 200OK message to TAS; the TAS returns the 200OK message to the CSCF;

24. CSCF sends 200OK message to CAT AS;

204. the called user equipment rings. Specifically, the method comprises the following steps:

25. the called UE sends 180 message to CSCF, which indicates that the called UE starts ringing;

26. CSCF sends 180 message to TAS; the TAS returns the 180 message to the CSCF;

27. CSCF sends 180 message to CAT AS; the CAT AS returns the 180 message to the CSCF. The 180 is a call state prompt message, the corresponding call state prompt is that the called UE rings, and the CAT AS obtains the information that the called UE rings from the 180 message. Optionally, the CAT AS may synthesize the ringing information of the called UE into a video screen of the video color ring. For example, the CATAS synthesizes subtitles such as "called party has ringing", "call on, waiting for user to answer", and the like into a video screen. The video color ring played by the calling UE displays the ringing prompt of the called UE, and the calling user obtains the information.

28. The CSCF sends the 180 message to the calling UE. The calling UE obtains the information that the called UE rings from the 180 message. Optionally, when the calling UE has a video synthesis capability, the calling UE may synthesize the ringing information of the called UE into a video screen of the video polyphonic ringtone. For example, the calling UE is composed into a video screen with subtitles such as "called ring", "call on, waiting for user to answer", and the like. The video color ring played by the calling UE displays the ringing information of the called UE, and the calling user obtains the information. It should be noted that the ringing information of the called party may not be displayed in the playing video polyphonic ringtone, but may be displayed in other places of the mobile phone screen; or the calling UE does not need to notify the calling user after obtaining the 180 message.

205. The call ends.

The call end may include a call failure or a call drop, among others. There are many possible situations of call failure, such as when CSCF sends Invite message to TAS, called network is unavailable, called subscriber is defaulted, etc. as happens in step 203, segment 14; for example, in step 203, segment 15, when the CSCF sends the Invite message to the called UE, the called UE is in a call or the called UE is powered off; for example, after 24 steps of 203, the ringing (180) message of the called UE has not been received, i.e. the paging has timed out, etc.; for example, after the step of segment 28, 204, the called UE rings, but the called UE has not picked up, i.e. the call is not answered by the user.

29a, the TAS may send an INFO message to the CAT AS when a call failure occurs. The INFO message is a call state prompt message, and the corresponding call state prompt is a call failure prompt. The INFO message may contain information about the call, such AS the calling number in the From header field, the address of CAT-AS in the R-URI header field, and the called number in the TO header field. The call failure prompt of the INFO message may carry a call failure cause value, which may be a code value corresponding to a cause of a call failure, for example, 000 corresponding to unavailability of the called network, 001 corresponding to the called UE being in a call, 010 corresponding to the called UE having been powered off, 011 corresponding to no-person call reception, 100 corresponding to the call being hung up, and the like. The call failure prompt of the INFO message may carry video-synthesized caption information, that is, caption information for prompting the call failure to the calling subscriber, where the caption information may be the value of the reason for the call failure. In addition, the call failure prompt may also carry video synthesized caption types, such as chinese, english, etc.

And after the CAT AS receives the INFO message, synthesizing a call failure prompt into the video color ring, displaying the call failure prompt by the video color ring played by the calling UE, and informing the calling user of the prompt. CAT AS decodes the reason value of call failure in INFO message, obtains the reason of the call failure situation, and synthesizes into the video screen in the form of caption or barrage. Subtitles of call failure reasons such as ' a user who calls you is not in a service area ', ' a telephone which calls you ' call ', ' a user who calls you ' is off ', ' no person answers the telephone which calls you ' call ' and the like appear in a video screen. The video synthesis method can be that after the current video color ring video stream is decoded, the caption and the video picture are encoded again after being overlapped. Thus, subtitles are present in the video picture.

After seeing the prompt of call failure, the calling user can continue to watch the video color ring and can actively hang up to finish the call. If the video color ring playing is finished, the calling user is not on-hook, and the network side actively finishes the conversation.

Optionally, after receiving the INFO message, the CAT AS may determine whether to continue playing the video polyphonic ringtone for several seconds according to the local configuration, or directly stop playing the video polyphonic ringtone, play an audio prompt of the call failure to the calling party, and notify the calling party of the call failure prompt.

29b, the TAS may also send an INFO message to the calling UE when a call failure occurs. The INFO message is a call state prompt message, and the corresponding call state prompt is a call failure prompt. The INFO message may also carry the information of the call, the call failure prompt, and the like, and the call failure prompt may carry the call failure reason value, which is specifically referred to in fig. 29 a.

When the calling UE has the video synthesis capability, after receiving the INFO message, the calling UE can synthesize the prompt of the call failure into the video screen of the video polyphonic ringtone, and the specific content is as shown in fig. 29 a. The method of composing the video may be to superimpose subtitles directly on top of the video. The video color ring played by the calling UE displays the prompt of call failure.

Optionally, after receiving the INFO message, the calling UE may determine whether to continue playing the video polyphonic ringtone for several seconds according to local configuration, or directly stop playing the video polyphonic ringtone, and play an audio prompt indicating that the call has failed to the calling user.

It should be noted that, 29a and 29b are two possible situations for notifying the calling party of the call failure prompt, 29a is that the TAS sends the call failure prompt message to the CAT AS, and notifies the calling party through the CAT AS; the TAS sends a call failure alert message to the calling UE, thus notifying the calling UE of the failure. In the embodiment of the present invention, an INFO message is taken as an example of a call state prompting message, and the call state prompting message may also be other messages such as an Update message. For example, when a call failure occurs, the TAS sends an Update message to the CAT AS, where the PEM is sent to indicate a network side to play, and the CAT AS stops playing a video color ring after receiving the Update message and forwards the Update message to the calling UE.

30. CAT AS sends OXX message to calling UE to indicate that the call is failed, closes the call signaling and releases the media resource of the call.

It should be noted that, the TAS may also send OXX message to the calling UE, which is not limited in the embodiment of the present invention.

In addition, when the call is normally carried out, the called party is off-hook, the CAT AS stops playing the video color ring, and initiates a Re-Invite flow to complete media negotiation between the calling party and the called party and complete the conversation between the calling party and the called party. Finally, the call is hung up, and the call is normally ended.

In the embodiment of the invention, the calling UE initiates a call, and the color ring server starts the flow of playing the video color ring early after receiving the call request. The invention solves the limitation that the video color ring playing process can be started only after the called user equipment rings. Based on the technical scheme of the invention, the method for playing the video color ring in advance can be provided, so that the calling user can start to watch the video color ring in the process of paging the called user, and the playing time of the video color ring is prolonged. And the technical scheme of the invention also realizes the prompt function of the call state, so that the calling user can know the call state while watching the video color ring, and even if the call fails, the calling user equipment can also select to continuously watch the video color ring, thereby improving the user experience of the video color ring. In addition, the invention also informs the network elements of the calling domain and the called domain of the information of playing the video in advance of the call, thereby avoiding the occurrence of errors in the response rate statistics.

As shown in fig. 3, which is a schematic diagram of a possible structure of the color ring back tone server in the foregoing embodiment, the color ring back tone server includes a sending module 301, a receiving module 302, a negotiation module 303, a determination module 304, a notification module 305, and a video synthesis module 306.

A receiving module 302, configured to receive a call request message, where the request message carries a calling party identifier. The specific receiving process can be seen in 201 of fig. 2; a sending module 301, configured to send a call response message to the calling user equipment, where the calling user equipment identifies a corresponding device for the calling user and the response message may be a 183 message. The specific process can be seen in 202 of fig. 2; the negotiation module 303 is further configured to perform audio/video media negotiation with the calling user equipment. The specific process can be seen in 202 of fig. 2; the sending module 301 is further configured to send a video polyphonic ringtone media stream to the calling user equipment after the audio/video media negotiation is completed, and play a video polyphonic ringtone for the calling user equipment. The specific process can be seen in 202 of fig. 2.

Optionally, after the receiving module 302 receives the call request, the determining module 304 is configured to determine that the call request message carries an indication that the phone application server corresponding to the calling user equipment has the capability of playing the video polyphonic ringtone early. Based on this determination, the sending module 301 is configured to send a call answer message to the calling user equipment. The specific process can be seen in 201 and 202 of fig. 2.

Optionally, after the receiving module 302 receives a call request message sent by the calling user equipment, the sending module 301 is further configured to send a notification message to a call session control function device (CSCF) in the called domain, where the notification message is used to notify the CSCF that the call plays a video polyphonic ringtone in advance. The notification message may be 183 message or Invite message, and the notification message carries an indication that the coloring ring back tone of the early playing video is activated. The prompt that the early playing video color ring is activated can have various expression modes, for example, 183 message carries Alert-info urn service-predicting, or Invite message carries Contact + g.3gpp. When the network element of the calling domain and the network element of the called domain do answer rate statistics, the 183 message with the early playing video color ring prompt cannot be counted as that the called user equipment has successfully paged. Optionally, the network element performing the response rate statistics may perform individual statistics on 183 messages with the early-played video ring back tone prompt. The specific process can be seen in 202 and 203 of fig. 2.

Optionally, the receiving module 302 is further configured to receive a call state prompting message sent by a telephone application server of the called domain; the notifying module 305 is further configured to notify the calling user of the call state prompt corresponding to the prompt message. The call state alerting message may be an INFO message. The INFO message may carry information of the call, a prompt of the call status, caption information and caption type of the call status, etc. The specific process can be seen in 204 and 205 of fig. 2.

Optionally, the video synthesis module 306 is further configured to synthesize the call state prompt into a video color ring. Optionally, the call state prompt may be a call failure prompt, and the call failure prompt carries a call failure cause value. The call failure prompt can be synthesized into a video, and can be synthesized into a video screen in the form of a subtitle, for example, a subtitle of a call failure reason such as "a user who calls you is not in a service area", "a phone which calls you calls" and "a user who calls" is turned off "is synthesized into the video. Alternatively, the call state alert may be a ringing alert of the called user equipment. The ringing prompt of the called user is synthesized into the video, and can be synthesized into the video screen in the form of subtitles, for example, the subtitles of "ringing the called user", "call connection, waiting for the user to answer" and the like are synthesized in the video. The specific process can be seen in 204 and 205 of fig. 2.

It should be noted that the function of receiving the call state prompt message and prompting the call state of the calling party may be completed by a related module of the polyphonic ringtone server, or by a related module of the state video prompt server, or by a related module of a network element entity that is capable of simultaneously implementing the call state prompt function in other existing services.

Since the color ring server provided by the embodiment of the present invention can be used for controlling the method for playing the video color ring, the technical effect obtained by the color ring server can refer to the method embodiment, and will not be described herein again.

As shown in fig. 4, which is a schematic diagram of a possible structure of the calling user equipment in the foregoing embodiment, the calling user equipment includes a sending module 401, a receiving module 402, a negotiation module 403, a playing module 404, and a video composition module 405.

A sending module 401, configured to send a call request message to the color ring server, where the call request message may be an Invite message. Optionally, when the calling user equipment has the video composition capability, the call request message may carry an indication that the calling user equipment has the video composition capability. The specific process can be seen in 201 of fig. 2; a receiving module 402, configured to receive a call response message sent by the color ring server, where the response message may be a 183 message. The specific process can be seen in 202 of fig. 2; the negotiation module 403 is further configured to perform audio/video media negotiation with the color ring server. The specific process can be seen in 202 of fig. 2; and the playing module 404 is configured to play the video polyphonic ringtone after the audio/video media negotiation is completed. The specific process can be seen in 202 of fig. 2.

Optionally, the receiving module 402 is further configured to receive a call state prompting message. The call state prompting message can be an INFO message, and the INFO message can carry the information of the call, the prompt of the call state, the caption information of the call state, the caption type and the like; the video synthesis module 405 is further configured to synthesize the call state prompt into a video color ring; optionally, the call state prompt may be a call failure prompt, and the call failure prompt carries a call failure cause value. The call failure prompt can be synthesized into a video, and can be synthesized into a video screen in a subtitle form, for example, a subtitle of a call failure reason such as "a user who calls you is not in a service area", "a phone which calls you calls" and "the user who calls" is turned off "is synthesized into the video; alternatively, the call state alert may be a ringing alert of the called user equipment. The ringing prompt of the called user is synthesized into the video, and can be synthesized into the video screen in the form of subtitles, for example, the subtitles of "ringing the called user", "call connection, waiting for the user to answer" and the like are synthesized in the video. The specific process can be seen in 204 and 205 of fig. 2.

Since the calling user equipment provided by the embodiment of the present invention can be used for controlling the method for playing the video polyphonic ringtone, the technical effect obtained by the calling user equipment can refer to the method embodiment, and is not described herein again.

Fig. 5 is a schematic diagram of another embodiment of a color ring server according to an embodiment of the present invention. The method comprises the following steps:

the polyphonic ringtone server may have large differences due to different configurations or performances, and may include a transceiver 501, one or more Central Processing Units (CPUs) 502 (e.g., one or more processors) and a memory 503, one or more storage media 504 (e.g., one or more mass storage devices) storing applications 5041 or data 5042. The memory 503 and the storage medium 504 may be, among other things, transient storage or persistent storage. The program stored in the storage medium 504 may include one or more modules (not shown in fig. 5), each of which may include a series of instructions operating on the polyphonic ringtone server. Still further, the central processor 502 may be configured to communicate with the storage medium 504, and execute a series of instruction operations in the storage medium 504 on the color ring server.

In one embodiment of the invention, the transceiver 501 has the following functions: for receiving a call request message carrying a caller identification. The specific receiving process can be seen in 201 of fig. 2; for sending a call answer message to the calling user equipment, which is the equipment corresponding to the calling user identity and which answer message may be a 183 message. The specific process can be seen in 202 of fig. 2; a transceiver 501 or a central processor 502 for performing audio-video media negotiation with the calling user equipment. The specific process can be seen in 202 of fig. 2. The central processing unit 502 is further configured to send a video color ring media stream to the calling user equipment after the audio/video media negotiation is completed, and play a video color ring for the calling user equipment. The specific process can be seen in 202 of fig. 2.

Optionally, after the transceiver 501 receives the call request, the central processing unit 502 is configured to determine that the call request message carries an indication that the phone application server corresponding to the calling user equipment has the capability of playing the video polyphonic ringtone early. Based on this determination, the transceiver 501 is used to send a call answer message to the calling user equipment. The specific process can be seen in 201 and 202 of fig. 2.

Optionally, the transceiver 501 is configured to send a notification message to a call session control function device (CSCF) in a called domain after receiving a call request message sent by a calling user equipment, and is configured to notify the CSCF that the call plays a video polyphonic ringtone in advance. The notification message may be 183 message or Invite message, and the notification message carries an indication that the coloring ring back tone of the early playing video is activated. The prompt that the early playing video color ring is activated can have various expression modes, for example, 183 message carries Alert-info urn service-predicting, or Invite message carries Contact + g.3gpp. When the network element of the calling domain and the network element of the called domain do answer rate statistics, the 183 message with the early playing video color ring prompt cannot be counted as that the called user equipment has successfully paged. Optionally, the network element performing the response rate statistics may perform individual statistics on 183 messages with the early-played video ring back tone prompt. The specific process can be seen in 202 and 203 of fig. 2.

Optionally, the transceiver 501 is further configured to receive a call state prompting message sent by a telephony application server of the called domain. The transceiver 501 or the central processor 502 is further configured to notify the calling party of the call state prompt corresponding to the prompt message. The call state alerting message may be an INFO message. The INFO message may carry information of the call, a prompt of the call status, caption information and caption type of the call status, etc. The specific process can be seen in 204 and 205 of fig. 2.

Optionally, the central processing unit 502 is further configured to synthesize the call state prompt into a video color ring. Optionally, the call state prompt may be a call failure prompt, and the call failure prompt carries a call failure cause value. The call failure prompt can be synthesized into a video, and can be synthesized into a video screen in the form of a subtitle, for example, a subtitle of a call failure reason such as "a user who calls you is not in a service area", "a phone which calls you calls" and "a user who calls" is turned off "is synthesized into the video. Alternatively, the call state alert may be a ringing alert of the called user equipment. The ringing prompt of the called user is synthesized into the video, and can be synthesized into the video screen in the form of subtitles, for example, the subtitles of "ringing the called user", "call connection, waiting for the user to answer" and the like are synthesized in the video. The specific process can be seen in 204 and 205 of fig. 2.

It should be noted that the function of receiving the call state prompt message and prompting the call state of the calling party may be completed by the transceiver 501 and the central processing unit 502 of the polyphonic ringtone server, may be completed by the state video prompt server, or may be completed by other network element entities that have already been in service and can simultaneously implement the call state prompt function.

Fig. 6 is a schematic diagram of another embodiment of the calling user equipment in the embodiment of the present invention. It should be noted that the calling user equipment may be a user mobile phone, or may be other mobile equipment that can access the operator wireless network, such as an internet of things mobile equipment.

Fig. 6 is a block diagram illustrating a structure of a relevant part of calling user equipment according to an embodiment of the present invention. Referring to fig. 6, the calling user equipment includes: radio Frequency (RF) circuit 610, memory 620, input unit 630, display unit 640, sensor 650, audio circuit 660, wireless fidelity (WiFi) module 670, processor 680, and power supply 690. It will be appreciated by those skilled in the art that the calling user device configuration shown in fig. 6 does not constitute a limitation of the calling user device and may include more or less components than those shown, or some components in combination, or a different arrangement of components.

The following describes the components of the calling user equipment in detail with reference to fig. 6:

the RF circuit 610 may be used for receiving and transmitting signals during information transmission and reception or during a call, and in particular, receives downlink information of a base station and then processes the received downlink information to the processor 680; in addition, the data for designing uplink is transmitted to the base station. In general, the RF circuit 610 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the RF circuitry 610 may also communicate with networks and other devices via wireless communications. The wireless communication may use any communication standard or protocol, including but not limited to global system for Mobile communications (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), New air interface (New Radio), email, Short Message Service (SMS), etc.

The memory 620 may be used to store software programs and modules. The memory 620 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the user equipment, and the like. Further, the memory 620 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

Processor 680 is the control center of the calling subscriber device, and connects various parts of the entire subscriber device using various interfaces and lines, and performs various functions of the calling subscriber device and processes data by running or executing software programs and/or modules stored in memory 620 and calling data stored in memory 620, thereby performing overall monitoring of the calling subscriber device. Optionally, processor 680 may include one or more processing units; optionally, the processor 680 may integrate an application processor and a modem processor, wherein the application processor mainly handles operating systems, user interfaces, application programs, and the like, and the modem processor mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 680.

In one embodiment of the invention, the calling user equipment includes RF circuitry 610 that also has the following functionality: for sending a call request message, which may be an Invite message, to the color ring server. Optionally, when the calling user equipment has video composition capability, the call request message may carry an indication that the calling user equipment has video composition capability. The specific process can be seen in 201 of fig. 2; the method is used for receiving a call response message sent by the color ring server, and the response message may be 183 message. The specific process can be seen in 202 of fig. 2; and the method is also used for carrying out audio and video media negotiation with the color ring server. The specific process can be seen in 202 of fig. 2;

the display unit 640 also has the following functions: and the method is used for playing the video color ring after the negotiation of the audio and video media is finished. The specific process can be seen in 202 of fig. 2.

Optionally, the RF circuit 610 is further configured to receive a call state prompting message, where the call state prompting message may be an INFO message, and the INFO message may carry information of the call, a prompt of the call state, caption information of the call state, and a caption type of the call state; the processor 680 is further configured to synthesize the call state prompt into a video color ring. Optionally, the call state prompt may be a call failure prompt, and the call failure prompt carries a call failure cause value. The call failure prompt can be synthesized into a video, and can be synthesized into a video screen in a subtitle form, for example, a subtitle of a call failure reason such as "a user who calls you is not in a service area", "a phone which calls you calls" and "the user who calls" is turned off "is synthesized into the video; alternatively, the call state alert may be a ringing alert of the called user equipment. The ringing prompt of the called user is synthesized into the video, and can be synthesized into the video screen in the form of subtitles, for example, the subtitles of "ringing the called user", "call connection, waiting for the user to answer" and the like are synthesized in the video. The specific process can be seen in 204 and 205 of fig. 2.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A method for controlling video color ring playing is characterized in that the method comprises the following steps:

the color ring server receives a call request message, wherein the call request message carries a calling user identifier;

the color ring server sends a call response message to calling user equipment, wherein the calling user equipment is equipment corresponding to the calling user identification;

and the polyphonic ringtone server and the calling user equipment carry out audio and video media negotiation, and the video polyphonic ringtone media stream is sent to the calling user equipment after the audio and video media negotiation is finished.

2. The method of claim 1, wherein the sending the call response message from the color ring server to the calling user equipment comprises:

determining that the call request message carries an indication that a telephone application server corresponding to the calling user equipment has the capability of playing the video color ring early;

and the color ring server sends the call response message to the calling user equipment.

3. The method of claim 1, wherein the call answer message is a 183 message.

4. The method of claim 1, wherein after receiving the call request message, the color ring server further comprises:

and the CRBT server sends a notification message to the call session control function equipment corresponding to the called user equipment, so as to notify the call session control function equipment that the video CRBT is played in advance in the current call.

5. The method according to any one of claims 1-4, further comprising:

the color ring server receives a call state prompt message sent by a telephone application server corresponding to the called user equipment;

and the color ring server informs the calling user of the call state prompt corresponding to the prompt message.

6. The method of claim 5, wherein the step of the CRBT server notifying the calling party of the call state prompt comprises:

and the color ring server synthesizes the call state prompt into the video color ring.

7. The method of claim 5, further comprising:

the call state prompt is a call failure prompt which carries a call failure reason value.

8. A method for controlling video color ring playing is characterized in that the method comprises the following steps:

calling user equipment sends a calling request message to a color ring server;

the calling user equipment receives a call response message sent by the color ring server;

and the calling user equipment and the polyphonic ringtone server carry out audio and video media negotiation, and play the video polyphonic ringtone after the audio and video media negotiation is finished.

9. The method of claim 8, wherein the call request message carries an indication that the calling user equipment is capable of video information synthesis.

10. The method of any one of claims 8 to 9, further comprising:

the calling user equipment receives a calling state prompt message;

and the calling user equipment synthesizes the call state prompt corresponding to the prompt message into the video color ring.

11. The method of claim 10, further comprising:

12. A color ring server, comprising:

a receiving module, configured to receive a call request message, where the call request message carries a calling subscriber identity;

a sending module, configured to send a call response message to a calling user equipment, where the calling user equipment is a device corresponding to the calling user identifier;

the negotiation module is used for carrying out audio and video media negotiation with the calling user equipment;

and the sending module is also used for sending the video color ring media stream to the calling user equipment after the audio and video media negotiation is finished.

13. The CRBT server of claim 12, wherein the sending module is configured to send the call response message to the calling UE, and comprises:

a determining module, configured to determine that the call request message carries an indication that a phone application server corresponding to the calling user equipment has an ability to play a video color ring early;

the sending module is configured to send the call response message to the calling user equipment.

14. The CRBT server of claim 12, wherein the call response message is a 183 message.

15. The CRBT server of claim 12, wherein after the receiving module receives the call request message, the sending module is further configured to send a notification message to a call session control function device corresponding to a called user equipment, where the notification message is used to notify the call session control function device that the video CRBT is played in advance in this time.

16. The CRBT server of any one of claims 12-15, further comprising:

the receiving module is further configured to receive a call state prompting message sent by a telephone application server corresponding to the called user equipment;

and the notification module is used for notifying the calling user of the call state prompt corresponding to the prompt message.

17. The CRBT server of claim 16, wherein the notification module is configured to notify the calling party of the call state prompt, and comprises:

and the video synthesis module is used for synthesizing the call state prompt into the video color ring.

18. The CRBT server of claim 17, wherein the call state prompt is a call failure prompt, and the call failure prompt carries a call failure reason value.

19. A calling user device, comprising:

the sending module is used for sending a calling request message to the color ring server;

a receiving module, configured to receive a call response message sent by the color ring server;

the negotiation module is used for carrying out audio and video media negotiation with the color ring server;

and the playing module is used for playing the video color ring after the audio and video media negotiation is finished.

20. The calling party device of claim 19, wherein the call request message carries an indication that the calling party device is capable of video information synthesis.

21. A calling user device according to any of claims 19 to 20, further comprising:

the receiving module is also used for receiving a call state prompting message;

and the video synthesis module is used for synthesizing the call state prompt corresponding to the prompt message into the video color ring.

22. The calling subscriber device of claim 21, wherein the call state prompt is a call failure prompt, and wherein the call failure prompt carries a call failure cause value.