CN106303104B - A method for playing video ring tone and calling user equipment - Google Patents

Abstract

The embodiment of the invention discloses a method for playing a video color ring, which is used for initiating an audio call and realizing the function of playing the video color ring. The method in the embodiment of the present invention includes: the calling user equipment initiates an audio call to the called user equipment; the calling user equipment receives the video CRBT sent by the CRBT platform after the audio CRBT media negotiation is completed with the CRBT platform according to the audio call Media negotiation information; if the calling user equipment supports video CRBT media, the calling user equipment performs video media negotiation according to the video CRBT media negotiation information and the media capability information of the calling user equipment, and determines the video Media negotiation result: the calling user equipment sends the video media negotiation result to the CRBT platform, and the video media negotiation result is used for the CRBT platform to play video CRBT.

Description

A method for playing video ring tone and calling user equipment

technical field

The invention relates to the communication field, in particular to a method for playing a video ring tone and a calling user equipment.

Background technique

With the introduction of Voice over Long Term Evolution (VoLTE) based on the Internet Protocol Multimedia Subsystem (IMS), the quality of voice calls has been significantly improved compared to the 2/3G era, and high-definition voice calls can be provided and video calls, and the CRBT service is the most important voice value-added service for operators. Compared with the standard-definition CRBT experience under 2/3G, VoLTE CRBT can provide high-definition CRBT and video CRBT experience.

However, for the experience of VoLTE video CRBT, under the current solution, only when the calling VoLTE user dials the called VoLTE CRBT user according to the video calling method can experience the video CRBT, that is, the video CRBT can only be experienced under the premise of video calling , there is a problem that the call process is complicated and the requirements for network bearer are relatively high.

Contents of the invention

The embodiment of the present invention provides a method for playing a video color ring tone and a calling user equipment, which are used to initiate an audio call and realize the function of playing a video color ring tone.

The technical solution of the present invention is mainly applied to the VoLTE basic network networking architecture, which may include: calling user equipment, called user equipment, core network and CRBT platform. Among them, the CRBT platform, as an important telecom value-added service platform, may include a CRBT application server (RBT AS, Ring Back Tone Application Server) and a CRBT media resource server (RBT MRS, Ring Back Tone Media Resource Server). The signaling plane of the CRBT platform is connected to the core network S-CSCF (Serving-Call session control function, service-type call session control function), and the media plane is connected to the SBC (Session Border Controller, session border control) to provide users with CRBT Media playback.

The first aspect of the embodiments of the present invention provides a method for playing video color ring back tones, which may include: the calling user equipment initiates an audio call to the called user equipment; after the calling user equipment completes the audio color ring back tone media negotiation with the color ring back tone platform according to the audio call , receiving the video CRBT media negotiation information sent by the CRBT platform; if the calling user equipment supports video CRBT media, the calling user equipment performs video CRBT according to the video CRBT media negotiation information and the media capability information of the calling user equipment. Media negotiation, determining the video media negotiation result; the calling user equipment sends the video media negotiation result to the CRBT platform, and the video media negotiation result is used for the CRBT platform to play the video CRBT.

In the embodiment of the present invention, after the calling UE initiates an audio call to the called UE, the audio media negotiation is performed first, and then the video media negotiation is performed, so as to realize the function of playing a video color ring back tone when an audio call is initiated. The present invention solves the limitation that it is possible to experience video ring back only when the user initiates a video call. Based on the technical solution of the present invention, it can solve the problem that VoLTE users can also experience video ring back in the scene of initiating a voice call, thereby providing support for VoLTE. The innovation of CRBT business provides good technical support, and also enables CRBT to create and tap greater commercial value.

With reference to the first aspect of the embodiments of the present invention, in a possible implementation manner, the video media negotiation result includes information that the calling user equipment supports video color ring back tone media, and the calling user equipment receives the video media Internet Protocol IP address , video channel port information and video encoding/decoding information.

In the embodiment of the present invention, a specific description is made on the video media negotiation result. It should be understood that the video media negotiation result here is carried by the SDP protocol, and the video media negotiation result includes but is not limited to that the calling user equipment supports video CRBT media information, the calling user equipment receives the IP address of the video media, the video channel port information and the video encoding/decoding information, the calling user equipment and the CRBT platform transmit the video media according to the information included in the video media negotiation result stream information.

The second aspect of the embodiment of the present invention provides a method for playing video CRBT, which may include: the CRBT platform receives an audio call initiated by the calling user equipment; the CRBT platform completes the audio CRBT media negotiation with the calling user equipment according to the audio call Afterwards, the CRBT platform sends video CRBT media negotiation information to the calling user equipment; the CRBT platform receives the video media negotiation result sent by the calling user equipment; and the CRBT platform plays the video CRBT according to the video media negotiation result.

In the embodiment of the present invention, after the calling UE initiates an audio call to the called UE, the CRBT platform acquires the audio call, performs audio media negotiation first, and then performs video media negotiation, so as to realize the function of playing a video CRBT when an audio call is initiated. The present invention solves the limitation that it is possible to experience video ring back only when the user initiates a video call. Based on the technical solution of the present invention, it can solve the problem that VoLTE users can also experience video ring back in the scene of initiating a voice call, thereby providing support for VoLTE. The innovation of CRBT business provides good technical support, and also enables CRBT to create and tap greater commercial value.

With reference to the second aspect of the embodiments of the present invention, in a first possible implementation manner, the video media negotiation result includes information that the calling user equipment supports video color ring back tone media, and the calling user equipment receives the Internet protocol IP address of the video media. Address, video channel port information and video encoding/decoding information.

In the embodiment of the present invention, a specific description is made on the video media negotiation result. It should be understood that the video media negotiation result here is carried by the SDP protocol, and the video media negotiation result includes but is not limited to that the calling user equipment supports video CRBT media information, the calling user equipment receives the IP address of the video media, the video channel port information and the video encoding/decoding information, the calling user equipment and the CRBT platform transmit the video media according to the information included in the video media negotiation result stream information.

In combination with the second aspect and the first possible implementation of the embodiments of the present invention, in the second possible implementation, the CRBT platform sends video CRBT media negotiation information to the calling user equipment, including: if the called user equipment After activating the video CRBT service or the CRBT platform determines to play the video CRBT, the CRBT platform sends the video CRBT media negotiation information to the calling user equipment.

In the embodiment of the present invention, the conditions for the CRBT platform to send video CRBT media negotiation information are further limited. After the CRBT platform completes the audio CRBT media negotiation, if the called user equipment activates the video CRBT service or the CRBT platform CRBT, the CRBT platform sends the video CRBT media negotiation information to the calling user equipment. The CRBT platform can flexibly decide whether to play the video CRBT according to the control of the service side, and if so, send the video CRBT media negotiation information.

The third aspect of the embodiment of the present invention provides a method for playing video CRBT, which may include: the calling user equipment initiates an audio call to the called user equipment; the calling user equipment receives the video CRBT media negotiation information sent by the CRBT platform; if the If the calling user equipment supports video CRBT media, the calling user equipment performs video media negotiation according to the video CRBT media negotiation information and the media capability information of the calling user equipment, and determines the video media negotiation result; The CRBT platform sends the video media negotiation result, and the video media negotiation result is used by the CRBT platform to play the video CRBT.

In the embodiment of the present invention, after the calling UE initiates an audio call to the called user equipment, the original audio media negotiation is directly replaced with video media negotiation, so as to realize the function of playing a video color ring back tone when an audio call is initiated. Reduce one audio media negotiation process, saving time and network resources.

With reference to the third aspect of the embodiments of the present invention, in a possible implementation manner, the video media negotiation result includes information that the calling user equipment supports video color ring back tone media, and the calling user equipment receives the video media Internet protocol IP address , video channel port information and video encoding/decoding information.

In the embodiment of the present invention, a specific description is made on the video media negotiation result. It should be understood that the video media negotiation result here is carried by the SDP protocol, and the video media negotiation result includes but is not limited to that the calling user equipment supports video CRBT media information, the calling user equipment receives the IP address of the video media, the video channel port information and the video encoding/decoding information, the calling user equipment and the CRBT platform transmit the video media according to the information included in the video media negotiation result stream information.

The fourth aspect of the embodiment of the present invention provides a method for playing video CRBT, which may include: the CRBT platform receives an audio call initiated by the calling user equipment; the CRBT platform sends video CRBT media negotiation information to the calling user equipment; the CRBT platform The video media negotiation result sent by the calling user equipment is received; the CRBT platform plays the video CRBT according to the video media negotiation result.

In the embodiment of the present invention, after the calling UE initiates an audio call to the called user equipment, the original audio media negotiation is directly replaced with video media negotiation, so as to realize the function of playing a video color ring back tone when an audio call is initiated. Reduce one audio media negotiation process, saving time and network resources.

With reference to the fourth aspect of the embodiments of the present invention, in a first possible implementation manner, the video media negotiation result includes information that the calling user equipment supports video color ring back tone media, and the calling user equipment receives the Internet protocol IP address of the video media. Address, video channel port information and video encoding/decoding information.

In the embodiment of the present invention, a specific description is made on the video media negotiation result. It should be understood that the video media negotiation result here is carried by the SDP protocol, and the video media negotiation result includes but is not limited to that the calling user equipment supports video CRBT media information, the calling user equipment receives the IP address of the video media, the video channel port information and the video encoding/decoding information, the calling user equipment and the CRBT platform transmit the video media according to the information included in the video media negotiation result stream information.

In combination with the fourth aspect and the first possible implementation of the embodiments of the present invention, in the second possible implementation, the CRBT platform sends video CRBT media negotiation information to the calling user equipment, which may include: if the called When the user equipment activates the video CRBT service or the CRBT platform determines to play the video CRBT, the CRBT platform sends the video CRBT media negotiation information to the calling user equipment.

In the embodiment of the present invention, the conditions for the CRBT platform to send video CRBT media negotiation information are further limited. If the called user equipment activates the video CRBT service or the CRBT platform determines to play the video CRBT, the CRBT platform sends The user equipment sends the video CRBT media negotiation information. The CRBT platform can flexibly decide whether to play the video CRBT according to the control of the service side, and if so, send the video CRBT media negotiation information.

A fifth aspect of the embodiments of the present invention provides a calling user equipment, which has a function of realizing video playback corresponding to the above-mentioned first aspect. This function may be implemented by hardware, or may be implemented by executing corresponding software on the hardware. The hardware or software includes one or more modules corresponding to the above functions.

The sixth aspect of the embodiments of the present invention provides a color ring tone platform, which has the function of realizing video playback corresponding to the above-mentioned second aspect. This function may be implemented by hardware, or may be implemented by executing corresponding software on the hardware. The hardware or software includes one or more modules corresponding to the above functions.

A seventh aspect of the embodiments of the present invention provides a calling user equipment, which has a function of realizing video playback corresponding to the above third aspect. This function may be implemented by hardware, or may be implemented by executing corresponding software on the hardware. The hardware or software includes one or more modules corresponding to the above functions.

The eighth aspect of the embodiments of the present invention provides a CRBT platform, which has the function of realizing video playback corresponding to the fourth aspect. This function may be implemented by hardware, or may be implemented by executing corresponding software on the hardware. The hardware or software includes one or more modules corresponding to the above functions.

A ninth aspect of the embodiments of the present invention provides a calling user equipment, which may include: a transceiver and a processor, where the transceiver and the processor are connected through a bus;

The transceiver is used to initiate an audio call to the called user equipment; after the calling user equipment completes the audio CRBT media negotiation with the CRBT platform according to the audio call, it receives the video CRBT media negotiation information sent by the CRBT platform; Send the video media negotiation result, and use the video media negotiation result to play video ring back tones on the CRBT platform;

The processor is configured to, if the calling user equipment supports video CRBT media, perform video media negotiation according to the video CRBT media negotiation information and the media capability information of the calling user equipment, and determine the video media negotiation result.

The tenth aspect of the embodiments of the present invention provides a CRBT platform, which may include: a transceiver and a processor, the transceiver and the processor are connected through a bus;

The transceiver is used to receive the audio call initiated by the calling user equipment; after the CRBT platform completes the audio CRBT media negotiation with the calling user equipment according to the audio call, the sending unit sends the video CRBT media negotiation to the calling user equipment information; receiving the video media negotiation result sent by the calling user equipment;

The processor is used to play the video ring back tone according to the video media negotiation result.

The eleventh aspect of the embodiments of the present invention provides a calling user equipment, which may include: a transceiver and a processor, where the transceiver and the processor are connected through a bus;

The transceiver is used to initiate an audio call to the called user equipment; receive the video CRBT media negotiation information sent by the CRBT platform; send the video media negotiation result to the CRBT platform, and the video media negotiation result is used for the CRBT platform to perform video CRBT play;

The processor is configured to, if the calling user equipment supports video CRBT media, perform video media negotiation according to the video CRBT media negotiation information and the media capability information of the calling user equipment, and determine the video media negotiation result.

The twelfth aspect of the embodiments of the present invention provides a CRBT platform, which may include: a transceiver and a processor, the transceiver and the processor are connected through a bus;

The transceiver is used to receive the audio call initiated by the calling user equipment; send video color ring back tone media negotiation information to the calling user equipment; receive the video media negotiation result sent by the calling user equipment;

The processor is used to play the video ring back tone according to the video media negotiation result.

The thirteenth aspect of the embodiments of the present invention provides a system, including: calling user equipment and a ring back tone platform;

The calling user equipment is the calling user equipment performing the above first aspect and any possible implementation manner;

The CRBT platform is a CRBT platform that implements the above second aspect and any possible implementation manner.

The fourteenth aspect of the embodiments of the present invention provides a system, including: calling user equipment and a ring back tone platform;

The calling user equipment is the calling user equipment performing the above third aspect and any possible implementation manner;

The CRBT platform is a CRBT platform that implements the fourth aspect and any possible implementation manner.

The fifteenth aspect of the embodiments of the present invention provides a storage medium. It should be noted that the technical solution of the present invention essentially or the part that contributes to the existing technology or all or part of the technical solution can be produced by software. embodied in the form of , the computer software product is stored in a storage medium for storing computer software instructions for the above-mentioned device, which includes instructions for performing the above-mentioned first aspect, second aspect, third aspect or fourth aspect as The program the device is designed for.

The storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and other media capable of storing program codes.

It can be seen from the above technical solutions that the embodiments of the present invention have the following advantages:

In the embodiment of the present invention, the calling user equipment initiates an audio call to the called user equipment; after the calling user equipment completes the audio CRBT media negotiation with the CRBT platform according to the audio call, it receives the video CRBT sent by the CRBT platform Media negotiation information; if the calling user equipment supports video CRBT media, the calling user equipment performs video media negotiation according to the video CRBT media negotiation information and the media capability information of the calling user equipment, and determines the video Media negotiation result: the calling user equipment sends the video media negotiation result to the CRBT platform, and the video media negotiation result is used for the CRBT platform to play video CRBT. In the case of realizing audio calling, the function of video ring back tone is realized, which reduces the complexity of the video ring back tone call process and reduces the pressure on the network.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that are required in the description of the embodiments and prior art. Obviously, the accompanying drawings in the following description are only some implementations of the present invention For example, those skilled in the art can also obtain other drawings based on these drawings without creative work.

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

Fig. 1.b is a schematic diagram of the session description protocol SDP networking model provided in the embodiment of the present invention;

FIG. 2 is a schematic diagram of an embodiment of a method for playing a video ring tone in an embodiment of the present invention;

FIG. 3 is a schematic diagram of another embodiment of a method for playing a video ring tone in an embodiment of the present invention;

FIG. 4 is a schematic diagram of another embodiment of a method for playing a video ring tone in an embodiment of the present invention;

FIG. 5 is a schematic diagram of an embodiment of the calling user equipment in the embodiment of the present invention;

Fig. 6 is a schematic diagram of an embodiment of the CRBT platform in the embodiment of the present invention;

FIG. 7 is a schematic diagram of another embodiment of the calling user equipment in the embodiment of the present invention;

Fig. 8 is a schematic diagram of another embodiment of the CRBT platform in the embodiment of the present invention;

FIG. 9 is a schematic diagram of another embodiment of the calling user equipment in the embodiment of the present invention;

Fig. 10 is a schematic diagram of another embodiment of the CRBT platform in the embodiment of the present invention.

Detailed ways

The embodiment of the present invention provides a method for playing a video color ring tone and a calling user equipment, which are used to initiate an audio call and realize the function of playing a video color ring tone.

In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

The basic VoLTE network architecture mainly applied by the technical solution of the present invention is shown in Figure 1, which is a system architecture diagram of an embodiment of the present invention, which may include: calling user equipment, called user equipment, core network and CRBT platform. Among them, the CRBT platform, as an important telecom value-added service platform, may include a CRBT application server (RBT AS, Ring Back ToneApplication Server) and a CRBT media resource server (RBT MRS, Ring Back Tone Media Resource Server). It should be noted that the RBT AS and The RBT MRS can be a separate entity or can be integrated together. Logically, they are two independent modules located at the core network side of the called IMS domain. The signaling plane of the CRBT platform is connected to the core network S-CSCF (Serving-Call session control function, service-type call session control function), and the media plane is connected to the SBC (Session Border Controller, session border control) to provide users with CRBT Media playback.

In the architecture diagram shown in Fig. 1.a, the calling IMS domain may include a core network of the calling IMS domain and an EPC (Evolved Packet Core, evolved packet core network). The core network in the calling IMS domain includes: HSS (Home Subscriber Server, Home Subscriber Server), TAS (Telephony Application Server, Telephony Application Server), I/S-CSCF (I-CSCF, Interrogating-Call session Control Function, query type call session control) and SBC/P-CSCF (P-CSCF, Proxy-Call session Control Function, proxy-type call session control function). The EPC includes S/P-GW (P-GW, public data network gateway, packet data network gateway, S-GW: serving gateway) and MME (Mobile Management Entity, mobile management entity).

In addition to the network elements described above in the calling IMS domain, the called IMS domain also includes RBT AS/RBTMRS. It should be noted that the above description does not constitute a limitation on the system architecture diagram of the embodiment of the invention, and the system architecture diagram of the embodiment of the invention includes but is not limited to what is shown in FIG. 1 .

The following is a brief description of some key network elements mentioned above:

S-CSCF: English full name: Serving-Call session Control Function, Chinese translation: service-type call session control function, is the central node of the IMS (IP Multimedia Subsystem) core network, mainly used for user registration, authentication control, Session routing and service trigger control, and maintain session state information, etc.

I-CSCF: English full name: Interrogating-Call session Control Function, Chinese translation: query type call session control, is the unified preliminary entry point of the IMS network, responsible for the assignment and query of the S-CSCF for user registration.

P-CSCF: English full name: Proxy-Call session Control Function, Chinese translation: proxy-type call session control function, is the entry node for SIP (Session Initiation Protocol, Session Initiation Protocol) users to access the IMS network, mainly responsible for signaling and Message agent, etc.

TAS: English full name: Telephony Application Server, Chinese translation: Telephony Application Server), MMTel AS (Multimedia Telephony Application Server, multimedia telephony application server) provides multimedia telephony basic services and supplementary services; SCC AS (service centralization and continuity application server Application Server, Continuity Application Server) provides access domain selection T-ADS (terminating access domain selection, called access domain selection) capability and cooperates with other network elements to ensure handover, that is, SRVCC (Single Radio Voice Call Continuity, single radio standard voice call continuity) and eSRVCC (Enhanced Single Radio Voice Call Continuity, enhanced single radio voice call continuity) business continuity.

HSS: Home Subscriber Server, Home Subscriber Server, is a user database system that stores user subscription information and location information.

SBC: Session Border Controller, session border control, provides secure access and media processing.

MME: Mobile Management Entity, a mobile management entity, is the core device of the EPC (Evolved Packet Core, evolved packet core network) network, and provides the function of the MME logical entity.

S/P-GW: is the core device of the EPC network, and provides functions of a serving gateway (serving gateway, S-GW) and a packet data network gateway (public data network gateway, P-GW) logical entities.

RBT AS/RBT MRS: CRBT application server and CRBT media resource server. The signaling plane AS is connected to the IMS core network S-CSCF, and the media plane MRS is connected to the SBC. It is responsible for connecting the called party and triggering the CRBT playback during CRBT calls.

Brief description of IMS domain color ring back tone SIP route triggering:

The IMS domain CRBT trigger mainly follows the 3GPP 24.182 protocol specification, adopts the called IMS domain trigger principle, when the INVITE (request) message initiated by the calling IMS domain is sent to the called IMS domain S-CSCF, the called S-CSCF passes the user The iFC (initial Filter Criteria, initial filter rule) subscription information is triggered to the CRBT platform, and after the CRBT platform processes it, the call message returns to the S-CSCF to continue the subsequent call process. After the CRBT platform receives the called ringing message (180), it starts the playback process to the calling user. When the called party picks up the phone, the CRBT platform initiates a re-INVITE (re-request) process to complete the media communication between the calling party and the called party. Negotiate, and finally complete the call between the calling user and the called user.

In the prior art, if the calling user wants to experience the video CRBT, he can experience the video CRBT only under the condition that the video calls the called video CRBT user. Therefore, the popularization of the video CRBT is limited to a certain extent. In the technical solution of the present invention, an audio call is proposed for the called video CRBT user, and the video CRBT user can also experience the video CRBT, which improves the application of the video CRBT. Based on the existing VoLTE audio CRBT call playback process, the core idea of the technical solution of the present invention is to change the media negotiation between the CRBT and the calling terminal, and use video media instead of audio media for renegotiation. One method is to perform audio media negotiation in the original process On the basis of adding a video media negotiation process between the CRBT platform and the calling terminal, another method is to directly replace the CRBT audio media negotiation process in the original process with the CRBT video media negotiation. Compared with the first method, it does not need to be performed once Audio media negotiation process.

In the technical solution of the present invention, the protocol used is mainly SDP (Session Description Protocol, Session Description Protocol), which is used for media negotiation between two session entities and reaches an agreement, belongs to the signaling language family, and uses text (characters) Descriptive form. The SDP networking model is mainly a request/response model (offer/answer), as shown in Figure 1.b, including request/response entities and operation behaviors in different stages, such as the initial negotiation process and re-negotiation process, and a brief introduction The meaning of various parameters in the message.

The Offer/Answer model includes two entities, one is the request subject Offerer, and the other is the response entity Answerer. The two entities are only logically distinguished and can be converted under certain conditions. For example, if mobile phone A initiates a media negotiation request, then A is the Offerer; otherwise, if A is receiving the request, it is the Offerer.

The request message sent by the Offerer to the Answerer is called a request offer, and the content includes the media stream type, the encoding set used by each media stream, and the IP and port to be used to receive the media stream. After the Answerer receives the offer, the message sent back to the Offerer is called a response, which includes the media encoding to be used, whether to receive the media stream, and tells the Offerer the IP and port used to receive the media stream.

The existing CRBT call flow mainly refers to the two modes of Gateway Precondition (gateway precondition) and Gateway no-Precondition (gateway non-precondition). Precondition mode is not required. The technical solutions of the present invention will be described below in the form of embodiments. In the embodiment of the present invention, the RBT AS and RBT MRS included in the CRBT platform are logically two independent individuals, and they can also be integrated together or implemented as a separate individual. In the schematic diagram of the following embodiment, the Shown separately for explanation.

(1) Gateway Precondition mode:

As shown in Figure 2, it is a schematic diagram of an embodiment of a method for playing a video ring tone in the embodiment of the present invention, including:

201. The calling user equipment initiates an audio call to the called user equipment, and completes the resource reservation of the calling UE and the called UE;

In the embodiment of the present invention, the calling user equipment initiates an audio call to the called user equipment, and completes the resource reservation of the calling user equipment and the called user equipment. The system architecture applied by the embodiment of the present invention may include the calling UE, called UE, S-CSCF, RBT AS and RBT MRS; wherein the called UE, S-CSCF, RBT AS and RBT MRS all belong to the called IMS domain; RBTAS and RBT MRS can be regarded as the ring back tone platform.

Specifically, it may include: 1: the calling user equipment (User Equipment, UE) sends an initial request (Invite) message, and the Invite message includes the SDP session description protocol information and the audio call of the calling UE;

2: Transmit the Invite message to the RBT AS through the S-CSCF;

3: RBT AS receives the Invite message, and then sends the Invite message to the S-CSCF;

4: The S-CSCF transparently transmits the Invite message to the called UE;

5: After receiving the Invite message, the called UE returns a 183 message to the S-CSCF. The 183 message includes the session description protocol information of the called UE, and completes the resource reservation of the called UE;

6: S-CSCF sends 183 message to RBT AS;

7: The RBT AS then sends the 183 message to the S-CSCF;

8: The S-CSCF sends the 183 message to the calling UE;

9: After receiving the 183 message, the calling UE returns a confirmation (PRACK) message;

10: Send a confirmation (PRACK) message to the RBT AS through the S-CSCF;

11: The RBT AS returns the confirmation (PRACK) message to the S-CSCF;

12: S-CSCF transparent transmission confirmation (PRACK) message to the called UE;

13: After receiving the acknowledgment (PRACK) message, the called UE returns a 200 message, carrying the PRACK information to the S-CSCF;

14: S-CSCF sends 200 message to RBT AS;

15: RBT AS sends 200 message to S-CSCF;

16: The S-CSCF sends a 200 message to the calling UE;

17: The calling UE receives the 200 message, the calling resource is reserved successfully, and returns an update message, which includes the SDP information of the calling UE;

18: Send the update message to the RBT AS through the S-CSCF;

19: The RBT AS returns the update message to the S-CSCF;

20: The S-CSCF sends the update message to the called UE through transparent transmission;

21: The called UE receives the update message and returns a 200 message, which includes the SDP information of the called UE;

22: The S-CSCF receives the 200 message and sends the 200 message to the RBT AS;

23: RBT AS returns 200 message to S-CSCF;

24: The S-CSCF sends a 200 message to the calling UE;

25: The called UE sends a 180 message;

26: The S-CSCF receives the 180 message, and sends the 180 message to the RBT AS.

202. Carry out audio media negotiation;

In the embodiment of the present invention, this step is mainly a process of completing audio media negotiation between the calling user equipment and the CRBT platform. Specifically, it may include:

27: The RBT AS receives the 180 message; sends an Invite message to the RBT MRS, and the Invite message carries the SDP information of the audio color ring back tone, and prepares for playback resources;

28: RBT MRS judges whether to play video CRBT in this audio call according to the control of the service side; if video CRBT is played, it first returns a 200 message carrying audio CRBT SDP information, and audio CRBT SDP information can also be called audio CRBT media negotiation information. Audio media negotiation; if the service side controls not to play the video CRBT, keep the original audio call and play the audio CRBT process unchanged. Alternatively, the RBT MRS determines whether the called UE has enabled the video ring back tone service, and if enabled, returns a 200 message carrying the audio ring back tone SDP information for audio media negotiation;

It should be understood that not all audio calling scenarios need to play video CRBT. Whether the CRBT AS modifies the audio media with the calling UE to video media may also depend on the service control of the CRBT service management side. There are many methods for this service control. But the core idea is to judge whether the call meets the conditions for video media negotiation.

29: The RBT AS receives the 200 message, and initiates an update (update) message, the update message carrying audio color ring back tone SDP information;

30: Transmit an update message to the calling UE through the S-CSCF, and the update message carries audio color ring back tone SDP information;

31: The calling UE receives the update message, performs audio media negotiation according to the audio CRBT SDP information carried in the update message and the media capability information of the calling UE, determines the audio media negotiation result, and sends a 200 message, which carries the audio media the outcome of the negotiation;

32: Transmit the 200 message to the RBT AS through the S-CSCF;

33: The RBT AS receives the 200 message, and sends an acknowledgment (ACK) message to the RBT MRS according to the audio media negotiation result.

In the form of an example, the following is an explanation of the audio ring back tone SDP information, as follows:

v=0/*protocol version information, here the SDP version number is 0*/

o＝HuaWei 419 419IN IP4 10.137.2.197/*Owner/creator and session identifier (here, the user name of the session initiator is HuaWei; the session identifier is 419; the session version is 419; the network type is "IN", which means "Internet"; the address type currently defines "IP4" and "IP6", here is IP4; the address is 10.137.2.197.)*/

s=Sip Call/*session name ("s=" field indicates the session name, here is Sip Call)*/

c＝IN IP4 10.135.66.188/*Connection information (network type: IN is identified as "Internet", address type: IP4, connection address: 10.135.66.188)*/

t=0 0/*session activity time (the start and end time are both 0, indicating a persistent session)*/

m=audio 34318 RTP/AVP 104 /* Begin audio media information description. Audio media data will be sent to port 34318, the sending protocol is UDP-based RTP protocol, the format is 104 (dynamic RTP payload type)*/

a=rtpmap:104AMR-WB/16000/*Describe the payload type 104, which is the AMR-WB encoding method, and the sampling clock is 16000Hz*/

a＝ptime:20/*Media stream packaging time, here is 20ms*/

a=maxptime:240/*The maximum duration of media stream packaging, here is 240ms. */

203. Carry out video media negotiation;

In the embodiment of the present invention, this step is mainly a process in which the calling user equipment and the CRBT platform complete the video media negotiation. Specifically, it may include:

34: After receiving the confirmation (ACK) message, the RBT MRS initiates a re-request (re-Invite) message to the RBT AS, and the re-Invite message includes the video color ring back tone SDP information;

35: After the RBT AS receives the re-request, it sends an update message again, and the update message carries the video CRBT SDP information, and the video CRBT SDP information can also be called the video CRBT media negotiation information;

36: Transmit an update message to the calling UE through the S-CSCF, and the update message carries the video ring back tone SDP information;

37: The calling UE receives the update message. If the calling UE supports video CRBT media, perform video media negotiation according to the video CRBT SDP information carried in the update message and the media capability information of the calling UE, determine the video media negotiation result, and send a 200 message, the 200 message carries the video media negotiation result;

It should be understood that the video media negotiation result here is also carried by the SDP protocol. The video media negotiation result includes but is not limited to the information that the calling user equipment supports video color ring back tone media, and the calling user equipment receives the Internet protocol IP address of the video media. Address, video channel port information and video encoding/decoding information.

38: Transmit the 200 message to the RBT AS through the S-CSCF;

39: The RBT AS receives the 200 message, and sends the 200 message to the RBT MRS, and the 200 message includes the video media negotiation result;

40: After receiving the 200 message, the RBT MRS sends an ACK message to the RBT AS according to the video media negotiation result.

The following uses an example to explain the SDP information of the video ring back tone, as follows:

v=0/*protocol version information, here the SDP version number is 0*/

o＝HuaWei 419 419IN IP4 10.137.2.197/*Owner/creator and session identifier (here, the user name of the session initiator is HuaWei; the session identifier is 419; the session version is 419; the network type is "IN", which means "Internet"; the address type currently defines "IP4" and "IP6", here is IP4; the address is 10.137.2.197.)*/

s=Sip Call/*session name ("s=" field indicates the session name, here is Sip Call)*/

c＝IN IP4 10.135.66.188/*Connection information (network type: IN is identified as "Internet", address type: IP4, connection address: 10.135.66.188)*/

t=0 0/*session activity time (the start and end time are both 0, indicating a persistent session)*/

m=audio 34318 RTP/AVP 104 /* Begin audio media information description. Audio media data will be sent to port 34318, the sending protocol is UDP-based RTP protocol, the format is 104 (dynamic RTP payload type)*/

a=rtpmap:104AMR-WB/16000/*Describe the payload type 104, which is the AMR-WB encoding method, and the sampling clock is 16000Hz*/

a＝ptime:20/*Media stream packaging time, here is 20ms*/

a=maxptime:240/*The maximum duration of media stream packaging, here is 240ms. */

m=video 5098 RTP/AVP 102 /* Start video media information description. The video media data will be sent to port 5098, the sending protocol is RTP protocol based on UDP, the format is 102*/

a=rtpmap:102H264/90000/*Describe the payload type 102, which is H264 encoding method, and the sampling clock is 90000Hz*/

a=fmtp:102 profile-level-id=42801F; packetization-mode=0/*The parameter of payload type 102 is further given as "profile-level-id=42801F; packetization-mode=0". */

204. The calling UE rings.

In the embodiment of the present invention, it is a process in which the calling UE rings. Specifically, it may include:

41: RBT AS sends 180 message;

42: Send to the calling UE through the S-CSCF;

The CRBT platform plays the video CRBT, and the calling UE displays the video CRBT. It should be noted that the signaling interaction between the RBT AS and the RBTMRS is an interaction process between internal modules of the CRBT platform for reference. The signaling interaction between the RBT AS and the RBT MRS is not limited to the methods listed in the above process, and can be implemented in many ways, including any signaling interaction that can complete the renegotiation process from audio SDP to video SDP.

In the embodiment of the present invention, in the Gateway Precondition mode, after the calling UE initiates an audio call, the audio media negotiation is performed first, and then the video media negotiation is performed, so as to realize the function of playing a video ring back tone when an audio call is initiated. The present invention solves the limitation that it is possible to experience video ring back only when the user initiates a video call. Based on the technical solution of the present invention, it can solve the problem that VoLTE users can also experience video ring back in the scene of initiating a voice call, thereby providing support for VoLTE. The innovation of CRBT business provides good technical support, and also enables CRBT to create and tap greater commercial value.

As shown in FIG. 3 , it is a schematic diagram of another embodiment of the method for playing a video ring tone in the embodiment of the present invention, including:

301. The calling user equipment initiates an audio call to the called user equipment, and completes the resource reservation of the calling UE and the called UE;

In this embodiment of the present invention, step 301 is the same as step 201 in the embodiment shown in FIG. 2 , and will not be repeated here.

302. Carry out video media negotiation;

In the embodiment of the present invention, this step is mainly that the calling user equipment and the CRBT platform reset the audio media negotiation to video media negotiation, and complete the process of video media negotiation. Specifically, it may include:

27: The RBT AS receives the 180 message; sends an Invite message to the RBT MRS, the Invite message carries the SDP information of the audio color ring back tone, and prepares for playing resources;

28: The RBT MRS judges whether to play a video CRBT for this audio call according to the control on the service side. If the video CRBT is played, the audio caller’s offer is answered through the 183 message carrying the audio CRBT SDP information; if the service side control does not allow the video CRBT to be played, then Keep the original audio calling and playing the audio CRBT process unchanged; or, RBT MRS determines whether the called UE has subscribed to the video CRBT service, and if so, responds to the audio calling offer through the 183 message carrying the audio CRBT SDP information.

It should be understood that not all audio calling scenarios need to play video CRBT. Whether the CRBT AS modifies the audio media with the calling UE to video media may also depend on the service control of the CRBT service management side. There are many methods for this service control. But the core idea is to judge whether the call meets the conditions for video media negotiation.

29: The RBT MRS replies with a 200 message carrying the video CRBT SDP information, instructing the RBT AS to directly use the video CRBT SDP information to perform media negotiation with the calling UE;

30: After the RBT AS receives the 200 message, it initiates an update (update) message. The update message carries video CRBT SDP information, and the video CRBT SDP information can also be called video CRBT media negotiation information;

31: Transmit an update message to the calling UE through the S-CSCF, and the update message carries the video ring back tone SDP information;

32: After the calling UE receives the update message, if the calling UE supports video CRBT media, perform video media negotiation according to the video CRBT SDP information carried in the update message and the media capability information of the calling UE, determine the video media negotiation result, and send 200 message, the 200 message carries the video media negotiation result;

It should be understood that the video media negotiation result here is also carried by the SDP protocol. The video media negotiation result includes but is not limited to the information that the calling user equipment supports video color ring back tone media, and the calling user equipment receives the Internet protocol IP address of the video media. Address, video channel port information and video encoding/decoding information.

33: Transmit the 200 message to the RBT AS through the S-CSCF;

34: The RBT AS receives the 200 message, and sends the ACK message to the RBT MRS, and the ACK message includes the video media negotiation result.

The following uses an example to explain the SDP information of the video ring back tone, as follows:

v=0/*protocol version information, here the SDP version number is 0*/

o＝HuaWei 419 419IN IP4 10.137.2.197/*Owner/creator and session identifier (here, the user name of the session initiator is HuaWei; the session identifier is 419; the session version is 419; the network type is "IN", which means "Internet"; the address type currently defines "IP4" and "IP6", here is IP4; the address is 10.137.2.197.)*/

s=Sip Call/*session name ("s=" field indicates the session name, here is Sip Call)*/

c＝IN IP4 10.135.66.188/*Connection information (network type: IN is identified as "Internet", address type: IP4, connection address: 10.135.66.188)*/

t=0 0/*session activity time (the start and end time are both 0, indicating a persistent session)*/

m=audio 34318 RTP/AVP 104 /* Begin audio media information description. Audio media data will be sent to port 34318, the sending protocol is UDP-based RTP protocol, the format is 104 (dynamic RTP payload type)*/

a=rtpmap:104AMR-WB/16000/*Describe the payload type 104, which is the AMR-WB encoding method, and the sampling clock is 16000Hz*/

a＝ptime:20/*Media stream packaging time, here is 20ms*/

a=maxptime:240/*The maximum duration of media stream packaging, here is 240ms. */

m=video 5098 RTP/AVP 102 /* Start video media information description. The video media data will be sent to port 5098, the sending protocol is RTP protocol based on UDP, the format is 102*/

a=rtpmap:102H264/90000/*Describe the payload type 102, which is H264 encoding method, and the sampling clock is 90000Hz*/

a=fmtp:102 profile-level-id=42801F; packetization-mode=0/*The parameter of payload type 102 is further given as "profile-level-id=42801F; packetization-mode=0". */

303. The calling UE rings.

In the embodiment of the present invention, it is a process in which the calling UE rings. Specifically, it may include:

35: RBT AS sends 180 message;

36: sent to the calling UE through the S-CSCF.

The CRBT platform plays the video CRBT, and the calling UE displays the video CRBT. It should be noted that the signaling interaction between the RBT AS and the RBT MRS is an interaction process between internal modules of the CRBT platform for reference. The signaling interaction between the RBT AS and the RBT MRS is not limited to the methods listed in the above process, and can be realized in many ways, and any signaling interaction that can complete the video media negotiation process is acceptable.

In the embodiment of the present invention, in the Gateway Precondition mode, after the calling UE initiates an audio call, the original audio media negotiation is directly replaced by video media negotiation, so as to realize the function of playing a video ring back tone when an audio call is initiated. Compared with the embodiment shown in FIG. 2 , the audio media negotiation process is reduced once, saving time and network resources.

(2) Gateway no-Precondition mode:

As shown in FIG. 4, it is a schematic diagram of another embodiment of the method for playing a video ring tone in the embodiment of the present invention, including:

401. The calling user equipment initiates an audio call to the called user equipment;

The system framework applied by the embodiment of the present invention may include calling UE, called UE, S-CSCF, RBT AS and RBT MRS; wherein the called UE, S-CSCF, RBT AS and RBT MRS all belong to the called IMS domain; RBT AS and RBT MRS can be regarded as CRBT platforms.

The calling user equipment initiates an audio call to the called user equipment, specifically, may include:

1: The calling user equipment (User Equipment, UE) sends an initial request (Invite) message, and the Invite message includes the SDP session description protocol information and the audio call of the calling UE;

2: Transmit the Invite message to the RBT AS through the S-CSCF;

3: RBT AS receives the Invite message, and then sends the Invite message to the S-CSCF;

4: The S-CSCF transparently transmits the Invite message to the called UE;

5: After receiving the Invite message, the called UE returns a 180 message to the S-CSCF;

6: The S-CSCF receives the 180 message and sends the 180 message to the RBT AS.

402. Carry out video media negotiation;

In the embodiment of the present invention, this step is mainly a process in which the calling user equipment and the CRBT platform complete the video media negotiation. Specifically, it may include:

7: The RBT AS receives the 180 message; sends an Invite message to the RBT MRS, and the Invite message carries the SDP information of the audio ring back tone, and prepares for playing resources;

8: RBT MRS judges whether to play video CRBT in this audio call according to the control of the service side; if video CRBT is played, it first returns a 200 message carrying audio CRBT SDP information, and audio CRBT SDP information can also be called audio CRBT media negotiation information. Audio media negotiation; if the service side controls not to play the video CRBT, keep the original audio call and play the audio CRBT process unchanged. Alternatively, the RBT MRS determines whether the called UE has enabled the video ring back tone service, and if enabled, returns a 200 message carrying the audio ring back tone SDP information for audio media negotiation;

It should be understood that not all audio calling scenarios need to play video CRBT. Whether the CRBT AS modifies the audio media with the calling UE to video media may also depend on the service control of the CRBT service management side. There are many methods for this service control. But the core idea is to judge whether the call meets the conditions for video media negotiation.

9: The RBT AS receives the 200 message and initiates the 183 message, which carries the SDP information of the audio ring tone;

10: Transmit a 183 message to the calling UE through the S-CSCF, and the 183 message carries audio ring back tone SDP information;

11: The calling UE receives the 183 message, performs audio media negotiation according to the audio color ring back tone SDP information carried in the 183 message and the media capability information of the calling UE, determines the audio media negotiation result, and sends a PRACK message;

12: Transmit the PRACK message to the RBT AS through the S-CSCF;

13: The RBT AS receives the PRACK message, sends a 200 message to the S-CSCF, and the 200 message carries the PRACK message;

14: Send a 200 message to the calling UE through the S-CSCF, and the 200 message carries a PRACK message.

15: RBT AS sends ACK message to RBT MRS;

16: After receiving the confirmation (ACK) message, the RBT MRS initiates a re-request (re-Invite) message to the RBT AS, and the re-Invite message includes the video color ring back tone SDP information;

17: After receiving the re-request, the RBT AS initiates an update message. The update message carries the video CRBT SDP information. The video CRBT SDP information can also be called the video CRBT media negotiation information;

18: Transmit an update message to the calling UE through the S-CSCF, and the update message carries the video ring back tone SDP information;

19: The calling UE receives the update message. If the calling UE supports video CRBT media, perform video media negotiation according to the video CRBT SDP information carried in the update message and the media capability information of the calling UE, determine the video media negotiation result, and send a 200 message, the 200 message carries the video media negotiation result;

It should be understood that the video media negotiation result here is also carried by the SDP protocol. The video media negotiation result includes but is not limited to the information that the calling user equipment supports video color ring back tone media, and the calling user equipment receives the Internet protocol IP address of the video media. Address, video channel port information and video encoding/decoding information.

20: Transmit the 200 message to the RBT AS through the S-CSCF;

21: The RBT AS receives the 200 message, and sends the 200 message to the RBT MRS, and the 200 message includes the video media negotiation result;

22: After receiving the 200 message, the RBT MRS sends an ACK message to the RBT AS according to the video media negotiation result.

The following uses an example to explain the SDP information of the video ring back tone, as follows:

v=0/*protocol version information, here the SDP version number is 0*/

o＝HuaWei 419 419IN IP4 10.137.2.197/*Owner/creator and session identifier (here, the user name of the session initiator is HuaWei; the session identifier is 419; the session version is 419; the network type is "IN", which means "Internet"; the address type currently defines "IP4" and "IP6", here is IP4; the address is 10.137.2.197.)*/

s=Sip Call/*session name ("s=" field indicates the session name, here is Sip Call)*/

c＝IN IP4 10.135.66.188/*Connection information (network type: IN is identified as "Internet", address type: IP4, connection address: 10.135.66.188)*/

t=0 0/*session activity time (the start and end time are both 0, indicating a persistent session)*/

m=audio 34318 RTP/AVP 104 /* Begin audio media information description. Audio media data will be sent to port 34318, the sending protocol is UDP-based RTP protocol, the format is 104 (dynamic RTP payload type)*/

a=rtpmap:104AMR-WB/16000/*Describe the payload type 104, which is the AMR-WB encoding method, and the sampling clock is 16000Hz*/

a＝ptime:20/*Media stream packaging time, here is 20ms*/

a=maxptime:240/*The maximum duration of media stream packaging, here is 240ms. */

m=video 5098 RTP/AVP 102 /* Start video media information description. The video media data will be sent to port 5098, the sending protocol is RTP protocol based on UDP, the format is 102*/

a=rtpmap:102H264/90000/*Describe the payload type 102, which is H264 encoding method, and the sampling clock is 90000Hz*/

a=fmtp:102 profile-level-id=42801F; packetization-mode=0/*Further, the parameter of payload type 102 is "profile-level-id=42801F"; packetization-mode=0. */

403. The calling UE rings.

In the embodiment of the present invention, it is a process in which the calling UE rings. Specifically, it may include:

23: RBT AS sends 180 message;

24: sent to the calling UE through the S-CSCF;

The CRBT platform plays the video CRBT, and the calling UE displays the video CRBT. It should be noted that the signaling interaction between the RBT AS and the RBTMRS is an interaction process between internal modules of the CRBT platform for reference.

In the embodiment of the present invention, it is provided that in the Gateway no-Precondition mode, after the calling UE initiates an audio call, it directly replaces the original audio media negotiation with video media negotiation, so as to realize the function of playing a video ring back tone when making an audio call an example. Compared with the embodiment shown in FIG. 2 , it provides an achievable solution in Gateway no-Precondition mode, and saves one audio media negotiation process, saving time and network resources.

The method for playing video CRBT in the embodiment of the present invention has been described above, and the calling user equipment and CRBT platform in the embodiment of the present invention will be described respectively below.

As shown in FIG. 5, it is a schematic diagram of an embodiment of the calling user equipment in the embodiment of the present invention, including:

A sending unit 501, configured to initiate an audio call to the called user equipment;

The receiving unit 502 is configured to receive the video CRBT media negotiation information sent by the CRBT platform after the calling user equipment completes the audio CRBT media negotiation with the CRBT platform according to the audio call;

The processing unit 503 is configured to, if the calling user equipment supports video CRBT media, the processing unit performs video media negotiation according to the video CRBT media negotiation information and the media capability information of the calling user equipment, and determines the video media negotiation result;

The sending unit 501 is further configured to send the video media negotiation result to the CRBT platform, and the video media negotiation result is used for the CRBT platform to play the video CRBT.

Optionally, in some embodiments of the present invention, the video media negotiation result includes the information that the calling user equipment supports video color ring back tone media, the calling user equipment receives the video /decoded information.

As shown in FIG. 6, it is a schematic diagram of an embodiment of the CRBT platform in the embodiment of the present invention, including:

A receiving unit 601, configured to receive an audio call initiated by the calling user equipment;

The sending unit 602 is used for sending the video CRBT media negotiation information to the calling user equipment after the CRBT platform completes the audio CRBT media negotiation with the calling user equipment according to the audio call;

The receiving unit 601 is also configured to receive the video media negotiation result sent by the calling user equipment;

The processing unit 603 is configured to play the video ring tone according to the video media negotiation result.

Optionally, in some embodiments of the present invention, the video media negotiation result includes the information that the calling user equipment supports video color ring back tone media, the calling user equipment receives the video /decoded information.

Optionally, in some embodiments of the present invention,

The sending unit 602 is specifically configured to send the video CRBT media negotiation information to the calling user equipment if the called user equipment activates the video CRBT service or the CRBT platform determines to play the video CRBT.

As shown in Figure 7, it is a schematic diagram of another embodiment of the CRBT platform in the embodiment of the present invention, including:

A sending unit 701, configured to initiate an audio call to the called user equipment;

The receiving unit 702 is configured to receive the video CRBT media negotiation information sent by the CRBT platform;

The processing unit 703 is configured to, if the calling user equipment supports video CRBT media, the processing unit performs video media negotiation according to the video CRBT media negotiation information and the media capability information of the calling user equipment, and determines the video media negotiation result;

The sending unit 701 is further configured to send the video media negotiation result to the CRBT platform, and the video media negotiation result is used for the CRBT platform to play the video CRBT.

Optionally, in some embodiments of the present invention, the video media negotiation result includes the information that the calling user equipment supports video color ring back tone media, the calling user equipment receives the video /decoded information.

As shown in Figure 8, it is a schematic diagram of another embodiment of the CRBT platform in the embodiment of the present invention, including:

The receiving unit 801 is configured to receive an audio call initiated by the calling user equipment;

A sending unit 802, configured to send video CRBT media negotiation information to the calling user equipment;

The receiving unit 801 is also configured to receive the video media negotiation result sent by the calling user equipment;

The processing unit 803 is configured to play the video ring back tone according to the video media negotiation result.

Optionally, in some embodiments of the present invention, the video media negotiation result includes the information that the calling user equipment supports video color ring back tone media, the calling user equipment receives the video /decoded information.

Optionally, in some embodiments of the present invention,

The sending unit 802 is specifically configured to send the video CRBT media negotiation information to the calling user equipment if the called user equipment activates the video CRBT service or the CRBT platform determines to play the video CRBT.

As shown in FIG. 9, it is a schematic diagram of another embodiment of the calling user equipment in the embodiment of the present invention, including:

FIG. 9 is a block diagram showing the structure of the calling user equipment provided by the embodiment of the present invention, that is, the mobile phone. 9, the mobile phone includes: a radio frequency (Radio Frequency, RF) circuit 910, a memory 920, an input unit 930, a display unit 940, a sensor 950, an audio circuit 960, a wireless fidelity (wireless fidelity, WiFi) module 970, a processor 980 , and power supply 990 and other components. Those skilled in the art can understand that the structure of the mobile phone shown in FIG. 9 does not constitute a limitation to the mobile phone, and may include more or less components than shown in the figure, or combine some components, or arrange different components.

The following is a specific introduction to each component of the mobile phone in conjunction with Figure 9:

The RF circuit 910 can be used for sending and receiving information or receiving and sending signals during a call. In particular, after receiving the downlink information from the base station, it is processed by the processor 980; in addition, it sends the designed uplink data to the base station. Generally, the RF circuit 910 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier (Low Noise Amplifier, LNA), a duplexer, and the like. In addition, RF circuitry 910 may also communicate with networks and other devices via wireless communications. The above-mentioned wireless communication can use any communication standard or protocol, including but not limited to Global System of Mobile Communication (Global System of Mobile communication, GSM), General Packet Radio Service (General Packet Radio Service, GPRS), Code Division Multiple Access (Code Division Multiple Access) , CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (Long Term Evolution, LTE), email, Short Messaging Service (Short Messaging Service, SMS), etc.

The memory 920 can be used to store software programs and modules, and the processor 980 executes various functional applications and data processing of the mobile phone by running the software programs and modules stored in the memory 920 . The memory 920 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, at least one application program required by a function (such as a sound playback function, an image playback function, etc.); Data created by the use of mobile phones (such as audio data, phonebook, etc.), etc. In addition, the memory 920 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage devices.

The input unit 930 can be used to receive input numbers or character information, and generate key signal input related to user settings and function control of the mobile phone. Specifically, the input unit 930 may include a touch panel 931 and other input devices 932 . The touch panel 931, also referred to as a touch screen, can collect touch operations of the user on or near it (for example, the user uses any suitable object or accessory such as a finger or a stylus on the touch panel 931 or near the touch panel 931). operation), and drive the corresponding connection device according to the preset program. Optionally, the touch panel 931 may include two parts, a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and sends it to to the processor 980, and can receive and execute commands sent by the processor 980. In addition, the touch panel 931 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 931 , the input unit 930 may also include other input devices 932 . Specifically, other input devices 932 may include but not limited to one or more of physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, joysticks, and the like.

The display unit 940 may be used to display information input by or provided to the user and various menus of the mobile phone. The display unit 940 may include a display panel 941. Optionally, the display panel 941 may be configured in the form of a liquid crystal display (Liquid Crystal Display, LCD), an organic light-emitting diode (Organic Light-Emitting Diode, OLED), or the like. Further, the touch panel 931 may cover the display panel 941, and when the touch panel 931 detects a touch operation on or near it, the touch operation is sent to the processor 980 to determine the type of the touch event, and then the processor 980 according to the touch event The type provides a corresponding visual output on the display panel 941 . Although in FIG. 9 , the touch panel 931 and the display panel 941 are used as two independent components to realize the input and input functions of the mobile phone, in some embodiments, the touch panel 931 and the display panel 941 can be integrated to form a mobile phone. Realize the input and output functions of the mobile phone.

The handset may also include at least one sensor 950, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor can include an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 941 according to the brightness of the ambient light, and the proximity sensor can turn off the display panel 941 and/or when the mobile phone is moved to the ear. or backlight. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in various directions (generally three axes), and can detect the magnitude and direction of gravity when it is stationary, and can be used to identify the application of mobile phone posture (such as horizontal and vertical screen switching, related Games, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tap), etc.; as for other sensors such as gyroscope, barometer, hygrometer, thermometer, infrared sensor, etc. repeat.

The audio circuit 960, the speaker 961, and the microphone 962 can provide an audio interface between the user and the mobile phone. The audio circuit 960 can transmit the electrical signal converted from the received audio data to the speaker 961, and the speaker 961 converts it into an audio signal for output; After being received, it is converted into audio data, and then the audio data is processed by the output processor 980, and then sent to another mobile phone through the RF circuit 910, or the audio data is output to the memory 920 for further processing.

WiFi is a short-distance wireless transmission technology. The mobile phone can help users send and receive, browse webpages, and access streaming media through the WiFi module 970. It provides users with wireless broadband Internet access. Although FIG. 9 shows a WiFi module 970, it can be understood that it is not an essential component of the mobile phone, and can be completely omitted as required without changing the essence of the invention.

The processor 980 is the control center of the mobile phone. It uses various interfaces and lines to connect various parts of the entire mobile phone. By running or executing software programs and/or modules stored in the memory 920, and calling data stored in the memory 920, execution Various functions and processing data of the mobile phone, so as to monitor the mobile phone as a whole. Optionally, the processor 980 may include one or more processing units; preferably, the processor 980 may integrate an application processor and a modem processor, wherein the application processor mainly processes operating systems, user interfaces, and application programs, etc. , the modem processor mainly handles wireless communications. It can be understood that, the foregoing modem processor may not be integrated into the processor 980 .

The mobile phone also includes a power supply 990 (such as a battery) for supplying power to each component. Preferably, the power supply can be logically connected to the processor 980 through the power management system, so that functions such as charging, discharging, and power consumption management can be realized through the power management system.

Although not shown, the mobile phone may also include a camera, a Bluetooth module, etc., which will not be repeated here.

In one embodiment of the present invention, the RF circuit 910 included in the calling user equipment also has the following functions: initiate an audio call to the called user equipment; , receiving the video CRBT media negotiation information sent by the CRBT platform; sending the video media negotiation result to the CRBT platform, and the video media negotiation result is used for the CRBT platform to play the video CRBT;

The processor 980 also has the following functions: if the calling user equipment supports video CRBT media, the processor 980 performs video media negotiation according to the video CRBT media negotiation information and the media capability information of the calling user equipment, and determines the video media negotiation result.

In another embodiment of the present invention, the RF circuit 910 included in the calling user equipment also has the following functions: initiate an audio call to the called user equipment; receive the video CRBT media negotiation information sent by the CRBT platform; The result of the video media negotiation, the result of the video media negotiation is used on the ring back ring platform to play the video ring back ring;

The processor 980 also has the following functions: if the calling user equipment supports video CRBT media, the processor 980 performs video media negotiation according to the video CRBT media negotiation information and the media capability information of the calling user equipment, and determines the video media negotiation result.

As shown in Figure 10, it is a schematic diagram of another embodiment of the CRBT platform in the embodiment of the present invention, including:

The CRBT platform may have relatively large differences due to different configurations or performances, and may include a transceiver 1001, one or more central processing units (central processing units, CPU) 1002 (for example, one or more processors) and memory 1003 , one or more storage media 1004 (such as one or more mass storage devices) for storing application programs 10041 or data 10042 . Wherein, the memory 1003 and the storage medium 1004 may be temporary storage or persistent storage. The program stored in the storage medium 1004 may include one or more modules (not shown in FIG. 10 ), and each module may include a series of instruction operations on the CRBT platform. Furthermore, the central processing unit 1002 may be configured to communicate with the storage medium 1004, and execute a series of instruction operations in the storage medium 1004 on the CRBT platform.

In an embodiment of the present invention, the transceiver 1001 also has the following functions: for receiving an audio call initiated by the calling user equipment; The device sends video CRBT media negotiation information to the calling user equipment; it is also used to receive the video media negotiation result sent by the calling user equipment;

The central processing unit 1002 also has the following function: it is used to play the video ring tone according to the video media negotiation result.

Optionally, in some embodiments of the present invention,

The transceiver 1001 is specifically configured to send video CRBT media negotiation information to the calling user equipment if the called user equipment activates the video CRBT service or the CRBT platform determines to play the video CRBT.

In another embodiment of the present invention, the transceiver 1001 also has the following functions: for receiving the audio call initiated by the calling user equipment; for sending the video ring back tone media negotiation information to the calling user equipment; The video media negotiation result sent by the user equipment;

The central processing unit 1002 also has the following function: according to the video media negotiation result, play the video ring back tone.

Optionally, in some embodiments of the present invention,

The transceiver 1001 is also specifically configured to send video CRBT media negotiation information to the calling user equipment if the called user equipment activates the video CRBT service or the CRBT platform determines to play the video CRBT.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, and other media that can store program codes.

As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still understand the foregoing The technical solutions recorded in each embodiment are modified, or some of the technical features are replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (6)

1.A method for playing video color ring back tone is characterized by comprising the following steps:

The polyphonic ringtone platform receives an audio call initiated by calling user equipment to called user equipment;

The polyphonic ringtone platform interacts with the calling user equipment and the called user equipment according to the audio call to complete the resource reservation of the calling user equipment and the called user equipment;

after receiving the ringing message of the called user equipment, the polyphonic ringtone platform completes the audio polyphonic ringtone media negotiation with the calling user equipment;

The color ring platform sends video color ring media negotiation information to the calling user equipment;

the polyphonic ringtone platform receives a video media negotiation result sent by the calling user equipment;

And the color ring platform sends a ringing message to the calling user equipment according to the video media negotiation result, and plays the video color ring for the calling user equipment.

2. The method of claim 1, wherein the video media negotiation result includes information that the calling user equipment supports video color ring media, and the calling user equipment receives an internet protocol IP address of the video media, information of a video channel port, and information of video encoding/decoding.

3. The method of claim 1, wherein the CRBT platform sends video CRBT media negotiation information to a calling User Equipment (UE), comprising:

and if the called user equipment opens the video color ring service or the color ring platform determines to play the video color ring, the color ring platform sends the video color ring media negotiation information to the calling user equipment.

4. a color ring platform, comprising a transceiver and a processor, wherein:

The transceiver is used for receiving an audio call initiated by calling user equipment to called user equipment;

the processor is used for interacting with the calling user equipment and the called user equipment according to the audio call to complete resource reservation of the calling user equipment and the called user equipment; after receiving the ringing message of the called user equipment, finishing the audio color ring media negotiation with the calling user equipment;

the transceiver is further configured to send video coloring ring back tone media negotiation information to the calling user equipment, and receive a video media negotiation result sent by the calling user equipment;

The processor is further configured to control the transceiver to send a ringing message to the calling user equipment according to the video media negotiation result, and perform video color ring playing on the calling user equipment.

5. The CRBT platform of claim 4, wherein the video media negotiation result comprises information that the calling user equipment supports video CRBT media, and the calling user equipment receives an IP address of an Internet Protocol (IP) of the video media, information of a video channel port and information of video encoding/decoding.

6. The CRBT platform of claim 4,

the transceiver is specifically configured to send the video color ring media negotiation information to the calling user equipment if the called user equipment opens the video color ring service or the color ring platform determines to play the video color ring.