CN108206923B - Method and device for realizing multichannel video call and multichannel terminal - Google Patents
Method and device for realizing multichannel video call and multichannel terminal Download PDFInfo
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- CN108206923B CN108206923B CN201611170505.8A CN201611170505A CN108206923B CN 108206923 B CN108206923 B CN 108206923B CN 201611170505 A CN201611170505 A CN 201611170505A CN 108206923 B CN108206923 B CN 108206923B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
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Abstract
The invention provides a method and a device for realizing multi-channel video call and a multi-channel terminal. The method is applied to a multi-pass terminal as a calling party, and comprises the following steps: in the process of establishing video call connection with multiple called terminals, negotiating with each called terminal respectively to determine resolution, and obtaining multiple negotiated resolutions; when the plurality of negotiated resolutions are not completely the same, selecting the lowest-level resolution from the plurality of negotiated resolutions, and negotiating with the called terminal with a negotiation result higher than the lowest-level resolution again so that the resolution negotiated with each path of called terminal is the lowest-level resolution; and carrying out multi-channel video call with the multi-channel called terminal by adopting the lowest-level resolution. The invention can unify the downlink resolution of the multi-channel called terminal, thereby facilitating the unified display of the interface of the calling terminal.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a method and a device for realizing multi-channel video call and a multi-channel terminal.
Background
The multi-channel video call based on the Voice over LTE (LTE Network audio and video call) means that a calling terminal creates a multi-channel private bearer through an IMS (IP Multimedia Subsystem) PDN (Public Data Network) and performs a video call with a plurality of called terminals at the same time.
In the multi-channel video call, the interface of the calling terminal needs to display the images of a plurality of called users at the same time, and the negotiated resolution between the calling terminal and each channel of called terminals is different because the network condition of each channel is different, the allocated QoS (Quality of Service) is different, and the performance of each mobile phone is different. If the interface of the calling terminal displays images with different resolutions at the same time, operations such as resolution conversion, compression and the like are required to be carried out on each path of received video data.
In the process of implementing the invention, the inventor finds that at least the following technical problems exist in the prior art:
when multiple paths of video calls are carried out, when the resolution negotiated by the calling terminal and each path of called terminal is different, the calling terminal needs to carry out operations such as resolution conversion, compression and the like on each path of received video data, which is not beneficial to displaying the interface of the calling terminal.
Disclosure of Invention
The method, the device and the multi-channel terminal for realizing the multi-channel video call can unify the downlink video resolution of the multi-channel called terminal, thereby facilitating the unified display of the interface of the calling terminal.
In a first aspect, the present invention provides a method for implementing a multi-channel video call, where the method is applied to a multi-channel terminal as a calling party, and the method includes:
in the process of establishing video call connection with multiple called terminals, negotiating with each called terminal respectively to determine resolution, and obtaining multiple negotiated resolutions;
when the plurality of negotiated resolutions are not completely the same, selecting the lowest-level resolution from the plurality of negotiated resolutions, and negotiating with the called terminal with a negotiation result higher than the lowest-level resolution again so that the resolution negotiated with each path of called terminal is the lowest-level resolution;
and carrying out multi-channel video call with the multi-channel called terminal by adopting the lowest-level resolution.
Optionally, the selecting a lowest-level resolution from the multiple negotiated resolutions, and negotiating with the called terminal having a negotiation result higher than the lowest-level resolution again includes: and carrying out Session Initiation Protocol (SIP) negotiation with the called terminal of which the negotiation result is higher than the lowest level resolution by using the UPDATE signaling, and updating the original negotiation result.
Optionally, the negotiating with each path of called terminal to determine the resolution respectively, and obtaining the multiple negotiated resolutions includes:
sending the resolution requested by the called terminal to the called terminal, receiving the resolution replied by the called terminal, and taking the resolution requested by the called terminal as the resolution negotiated with the called terminal if the resolution requested by the called terminal is consistent with the resolution replied by the called terminal; and if the resolution requested by the user is not consistent with the resolution replied by the called terminal, re-performing SIP negotiation with the called terminal by using an UPDATE signaling according to the resolution replied by the called terminal until a confirmation response replied by the called terminal is received, and taking the resolution replied by the called terminal as the resolution negotiated with the called terminal.
In a second aspect, the present invention provides an apparatus for implementing a multichannel video call, where the apparatus is located at a multichannel terminal as a calling party, and the apparatus includes:
the first negotiation unit is used for negotiating with each path of called terminal to determine the resolution respectively in the process of establishing video call connection with multiple paths of called terminals to obtain multiple negotiated resolutions;
a second negotiation unit, configured to, when the multiple negotiated resolutions are not identical, select a lowest-level resolution from the multiple negotiated resolutions, perform negotiation again with a called terminal whose negotiation result is higher than the lowest-level resolution, so that the resolution negotiated with each path of called terminal is the lowest-level resolution;
and the video call unit is used for carrying out multi-path video call with the multi-path called terminal by adopting the lowest-level resolution.
Optionally, the second negotiation unit is configured to perform session initiation protocol SIP negotiation with the called terminal whose negotiation result is higher than the lowest-level resolution using the UPDATE signaling, and UPDATE the original negotiation result.
Optionally, the first negotiation unit is configured to send a resolution requested by the first negotiation unit to the called terminal, receive a resolution replied by the called terminal, and use the resolution requested by the first negotiation unit as a resolution negotiated with the called terminal when the resolution requested by the first negotiation unit is consistent with the resolution replied by the called terminal; and when the resolution requested by the user is not consistent with the resolution replied by the called terminal, the user uses an UPDATE signaling to carry out SIP negotiation with the called terminal again according to the resolution replied by the called terminal until a confirmation response replied by the called terminal is received, and the resolution replied by the called terminal is used as the resolution negotiated with the called terminal.
In a third aspect, the present invention provides a multi-channel terminal, where the multi-channel terminal includes the apparatus for implementing the multi-channel video call.
In the method, the device and the multi-channel terminal for realizing the multi-channel video call provided by the embodiment of the invention, in the process of establishing video call connection with a multi-channel called terminal, a resolution is negotiated with each channel of called terminal respectively to determine a resolution, a plurality of negotiated resolutions are obtained, when the plurality of negotiated resolutions are not completely the same, the lowest level resolution is selected from the plurality of negotiated resolutions, and the negotiation is carried out again with the called terminal of which the negotiation result is higher than the lowest level resolution, so that the resolutions negotiated with each channel of called terminal are all the lowest level resolutions, and the lowest level resolutions are adopted to carry out the multi-channel video call with the multi-channel called terminal. Compared with the prior art, the method and the device can ensure that the resolution ratio of each video call is the same after the video call is established, and are convenient for the unified display of the interface of the calling terminal, so that operations such as resolution ratio conversion and the like are not needed in the future, thereby reducing the internal processing of the terminal and saving the power consumption.
Drawings
FIG. 1 is a flow chart of a method for implementing a multi-way video call according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a method for implementing a multi-way video call according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of an apparatus for implementing a multi-way video call according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a method for realizing multi-channel video call, which is applied to a multi-channel terminal as a calling party, and as shown in figure 1, the method comprises the following steps:
and S11, negotiating with each path of called terminal respectively to determine the resolution in the process of establishing video call connection with the multiple paths of called terminals, and obtaining multiple negotiated resolutions.
Specifically, the resolution may be negotiated with each path of called terminal as follows:
sending the resolution requested by the called terminal to the called terminal, receiving the resolution replied by the called terminal, and taking the resolution requested by the called terminal as the resolution negotiated with the called terminal if the resolution requested by the called terminal is consistent with the resolution replied by the called terminal; and if the resolution requested by the user is not consistent with the resolution replied by the called terminal, re-performing SIP negotiation with the called terminal by using an UPDATE signaling according to the resolution replied by the called terminal until a confirmation response replied by the called terminal is received, and taking the resolution replied by the called terminal as the resolution negotiated with the called terminal.
And S12, when the negotiated resolutions are not completely the same, selecting the lowest resolution from the negotiated resolutions, and negotiating with the called terminal with the negotiation result higher than the lowest resolution again so that the resolution negotiated with each path of called terminal is the lowest resolution.
Specifically, session initiation protocol SIP negotiation may be performed between the UPDATE signaling and the called terminal whose negotiation result is higher than the lowest level resolution, so as to UPDATE the original negotiation result.
And S13, carrying out multi-path video call with the multi-path called terminal by adopting the lowest-level resolution.
In the implementation method of the multi-channel video call provided by the embodiment of the invention, in the process of establishing video call connection with a multi-channel called terminal, a resolution is negotiated with each channel of called terminal respectively to determine a resolution, so as to obtain a plurality of negotiated resolutions, when the plurality of negotiated resolutions are not identical, the lowest level resolution is selected from the plurality of negotiated resolutions, and the negotiation with the called terminal of which the negotiation result is higher than the lowest level resolution is carried out again, so that the resolutions negotiated with each channel of called terminal are all the lowest level resolutions, and the lowest level resolution is adopted to carry out the multi-channel video call with the multi-channel called terminal. Compared with the prior art, the method and the device can ensure that the resolution ratio of each video call is the same after the video call is established, and are convenient for the unified display of the interface of the calling terminal, so that operations such as resolution ratio conversion and the like are not needed in the future, thereby reducing the internal processing of the terminal and saving the power consumption.
Specifically, when performing a multichannel video call based on VoLTE, the calling multichannel terminal may perform negotiation with each channel of terminal according to the flow shown in fig. 2, and the specific steps are as follows:
(1) the caller initiates an INVITE request containing the resolution type of the caller request.
(2) The called reply 183Session Progress response is used as the response of the INVITE and contains the resolution types supported by the called party.
(3) The terminal transmits PRACK in response to receiving 183Session Progress.
(4) If the media type of the called reply is different from that of the calling request, an UPDATE message containing a second SDP request needs to be sent, and the resolution is renegotiated.
(5) The called replies a 200OK as a response to the UPDATE message.
(6) The called party sends 180 ringing.
(7) Called reply 200OK as response to INVITE request
(8) The caller sends an ACK to confirm that the 200OK was received correctly.
(9) And verifying that the RTP packet transmission is normally carried out and confirming that the call is successfully established.
(10) The calling initiates a BYE release procedure.
As can be seen from the above Process, the SDP message is carried in the SIP signaling, media types at both ends can be negotiated, an INVITE signaling contains a resolution type supported by a calling party, and a 183Session Process signaling contains a resolution type supported by a called party. The resolution can be updated through UPDATE signaling so that the calling party and the called party negotiate the same.
Taking two paths of video calls as an example, a calling multi-pass terminal creates two paths of special bearers and performs video calls with a called terminal A and a called terminal B at the same time, the resolution negotiated between the calling multi-pass terminal and the called terminal A is VGA, the resolution negotiated between the calling multi-pass terminal and the called terminal B is QVGA, after negotiation is finished, the calling multi-pass terminal judges the resolution of each path, SIP negotiation is performed on the path with high resolution again by taking low resolution as a standard, and an UPDATE signaling is used.
An embodiment of the present invention further provides a device for implementing a multi-channel video call, where the device is located at a multi-channel terminal serving as a calling party, and as shown in fig. 3, the device includes:
the first negotiation unit 11 is configured to negotiate with each path of called terminal to determine a resolution respectively in a process of establishing a video call connection with multiple paths of called terminals, so as to obtain multiple negotiated resolutions;
a second negotiation unit 12, configured to, when the multiple negotiated resolutions are not identical, select a lowest-level resolution from the multiple negotiated resolutions, perform negotiation again with a called terminal whose negotiation result is higher than the lowest-level resolution, so that the resolution negotiated with each path of called terminal is the lowest-level resolution;
and the video call unit 13 is configured to perform a multi-path video call with the multi-path called terminal by using the lowest-level resolution.
The device for implementing multi-channel video call provided by the embodiment of the invention negotiates with each channel of called terminal to determine the resolution respectively in the process of establishing video call connection with the multi-channel called terminal, so as to obtain a plurality of negotiated resolutions, when the plurality of negotiated resolutions are not completely the same, selects the lowest level resolution from the plurality of negotiated resolutions, and negotiates with the called terminal with a negotiation result higher than the lowest level resolution again, so that the resolution negotiated with each channel of called terminal is the lowest level resolution, and performs multi-channel video call with the multi-channel called terminal by adopting the lowest level resolution. Compared with the prior art, the method and the device can ensure that the resolution ratio of each video call is the same after the video call is established, and are convenient for the unified display of the interface of the calling terminal, so that operations such as resolution ratio conversion and the like are not needed in the future, thereby reducing the internal processing of the terminal and saving the power consumption.
Optionally, the second negotiation unit 12 is configured to perform session initiation protocol SIP negotiation with the called terminal whose negotiation result is higher than the lowest resolution by using the UPDATE signaling, and UPDATE the original negotiation result.
Optionally, the first negotiation unit 11 is configured to send a resolution requested by the first negotiation unit to the called terminal, receive a resolution replied by the called terminal, and use the resolution requested by the first negotiation unit as a resolution negotiated with the called terminal when the resolution requested by the first negotiation unit is consistent with the resolution replied by the called terminal; and when the resolution requested by the user is not consistent with the resolution replied by the called terminal, the user uses an UPDATE signaling to carry out SIP negotiation with the called terminal again according to the resolution replied by the called terminal until a confirmation response replied by the called terminal is received, and the resolution replied by the called terminal is used as the resolution negotiated with the called terminal.
The apparatus of this embodiment may be configured to implement the technical solutions of the above method embodiments, and the implementation principles and technical effects are similar, which are not described herein again.
The embodiment of the invention also provides a multi-channel terminal, which comprises the device for realizing the multi-channel video call.
The embodiment of the invention can be applied to multi-channel video call based on VoLTE, but is not limited to the method.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. A method for implementing multi-channel video call is characterized in that the method is applied to a multi-channel terminal as a calling party, and the method comprises the following steps:
in the process of establishing video call connection with multiple called terminals, negotiating with each called terminal respectively to determine resolution, and obtaining multiple negotiated resolutions;
when the plurality of negotiated resolutions are not completely the same, selecting the lowest-level resolution from the plurality of negotiated resolutions, and negotiating with the called terminal with a negotiation result higher than the lowest-level resolution again so that the resolution negotiated with each path of called terminal is the lowest-level resolution;
performing multi-channel video call with the multi-channel called terminal by adopting the lowest level resolution;
the negotiating with each path of called terminal to determine the resolution ratio respectively, and obtaining a plurality of negotiated resolution ratios comprises: sending the resolution requested by the called terminal to the called terminal, receiving the resolution replied by the called terminal, and taking the resolution requested by the called terminal as the resolution negotiated with the called terminal if the resolution requested by the called terminal is consistent with the resolution replied by the called terminal; and if the resolution requested by the user is not consistent with the resolution replied by the called terminal, re-performing SIP negotiation with the called terminal by using an UPDATE signaling according to the resolution replied by the called terminal until a confirmation response replied by the called terminal is received, and taking the resolution replied by the called terminal as the resolution negotiated with the called terminal.
2. The method according to claim 1, wherein the selecting a lowest resolution from the plurality of negotiated resolutions, and the renegotiating with the called terminal having a negotiation result higher than the lowest resolution comprises: and carrying out Session Initiation Protocol (SIP) negotiation with the called terminal of which the negotiation result is higher than the lowest level resolution by using the UPDATE signaling, and updating the original negotiation result.
3. An apparatus for implementing a multi-channel video call, the apparatus being located at a multi-channel terminal as a caller, the apparatus comprising:
the first negotiation unit is used for negotiating with each path of called terminal to determine the resolution respectively in the process of establishing video call connection with multiple paths of called terminals to obtain multiple negotiated resolutions;
a second negotiation unit, configured to, when the multiple negotiated resolutions are not identical, select a lowest-level resolution from the multiple negotiated resolutions, perform negotiation again with a called terminal whose negotiation result is higher than the lowest-level resolution, so that the resolution negotiated with each path of called terminal is the lowest-level resolution;
the video call unit is used for carrying out multi-path video call with the multi-path called terminal by adopting the lowest-level resolution;
the first negotiation unit is used for sending the resolution requested by the first negotiation unit to the called terminal, receiving the resolution replied by the called terminal, and taking the resolution requested by the first negotiation unit as the resolution negotiated with the called terminal when the resolution requested by the first negotiation unit is consistent with the resolution replied by the called terminal; and when the resolution requested by the user is not consistent with the resolution replied by the called terminal, the user uses an UPDATE signaling to carry out SIP negotiation with the called terminal again according to the resolution replied by the called terminal until a confirmation response replied by the called terminal is received, and the resolution replied by the called terminal is used as the resolution negotiated with the called terminal.
4. The apparatus of claim 3, wherein the second negotiation unit is configured to perform session initiation protocol SIP negotiation with the called terminal whose negotiation result is higher than the lowest level of resolution using UPDATE signaling, and UPDATE the original negotiation result.
5. Multi-pass terminal, characterized in that it comprises means for implementing a multi-pass video call according to any one of claims 3 to 4.
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| KR20160126621A (en) * | 2015-04-24 | 2016-11-02 | 이동훈 | Emergency video-telephony system and method using outside camera apparatus |
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| CN101588252A (en) * | 2008-05-23 | 2009-11-25 | 华为技术有限公司 | Control method and control device of multipoint conference |
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