CN113949693A - SIP-based multi-device resonance and video synchronization communication method - Google Patents
SIP-based multi-device resonance and video synchronization communication method Download PDFInfo
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- CN113949693A CN113949693A CN202111354569.4A CN202111354569A CN113949693A CN 113949693 A CN113949693 A CN 113949693A CN 202111354569 A CN202111354569 A CN 202111354569A CN 113949693 A CN113949693 A CN 113949693A
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- 238000004891 communication Methods 0.000 title claims abstract description 109
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000002452 interceptive effect Effects 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 230000001360 synchronised effect Effects 0.000 claims description 14
- 238000012790 confirmation Methods 0.000 claims description 6
- 230000003993 interaction Effects 0.000 claims description 4
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- 230000009286 beneficial effect Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/23602—Multiplexing isochronously with the video sync, e.g. according to bit-parallel or bit-serial interface formats, as SDI
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- 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 discloses a communication method for multi-equipment resonance and video synchronization based on SIP, which comprises the following steps: 1. constructing a SIP server (3); 2. the terminal equipment registers on the SIP server; 3. and step 3: the method comprises the steps that a first terminal device (1) sends calling request information to an SIP server to request video communication with a plurality of second terminal devices (2); 4. the second terminal devices respectively reply the attempted connection information and the ringing information to the SIP server and start ringing at the same time; 5. the SIP server sends the ringing information of the second terminal devices to the first terminal device, and the first terminal device sends audio and video streams to the second terminal devices through an RTP (real-time transport protocol); 6. and the plurality of second terminal devices establish real-time communication interactive connection with the first terminal device. The invention can meet the requirements of resonance and video synchronization of video communication of multi-terminal equipment, and optimizes an intelligent video communication mode.
Description
Technical Field
The present invention relates to a video communication method, and in particular, to a video communication method based on SIP (Session initiation Protocol) for multi-device synchronous resonance.
Background
The video communication is a telephone communication mode based on a network, in a three-party or multi-party video communication method in the prior art, special chip processing is needed for realization, and the same type of telephone is required to be accessed into the same telephone network, so that the telephone network configuration is quite complicated and inflexible, the maintenance cost is high, the practicability is poor, and the intelligent construction requirement of the internet of things which develops at a high speed cannot be met. Meanwhile, the platform supported by the traditional telephone based on circuit switching is very limited, if the services such as cross-platform communication, audio and video resonance and the like need to be realized by an intelligent network, the traditional telephone network needs to be greatly modified, and the cost is higher.
Disclosure of Invention
The invention aims to provide a communication method for multi-equipment resonance and video synchronization based on SIP, which can meet the requirements of resonance and video synchronization of multi-terminal equipment video communication and optimize an intelligent video communication mode.
The invention is realized by the following steps:
a multi-equipment resonance and video synchronization communication method based on SIP comprises the following steps:
step 1: constructing an SIP server;
step 2: the method comprises the steps that terminal equipment is registered on an SIP server, wherein the terminal equipment comprises first terminal equipment, second terminal equipment, … and nth terminal equipment n, and n is a natural number which is more than or equal to 2;
and step 3: the first terminal equipment sends call request information to the SIP server to request video communication with a plurality of second terminal equipment;
and step 3: the SIP server sends call request information to a plurality of second terminal devices respectively;
and 4, step 4: after receiving the call request information sent by the SIP server, the second terminal devices respectively reply the attempted connection information and the ringing information to the SIP server, and the second terminal devices start ringing at the same time;
and 5: the SIP server sends the ringing information of the second terminal devices to the first terminal device, and the first terminal device sends audio and video streams to the second terminal devices through the SIP server based on an RTP protocol to establish video communication connection;
step 6: and the plurality of second terminal devices establish real-time communication interactive connection with the first terminal device.
In step 1, the SIP server is internally provided with an SIP controller, and the SIP controller includes the following modules:
the registration module is used for receiving and storing the information of the terminal equipment, distributing a telephone number and a registration validity period to the terminal equipment needing resonance and video synchronous communication, generating a registration list and enabling the terminal equipment needing resonance and video synchronous communication to establish communication connection through the telephone number;
the authentication module is used for authenticating the validity and the registration validity period of the terminal equipment;
the dialing call resonance module is used for dynamically generating a dialing plan and associating terminal equipment needing resonance and video synchronous communication;
and the coding transmission conversion module is used for coding and decoding the audio and video stream.
The information of the terminal equipment comprises equipment IDs, each terminal equipment is provided with a unique equipment ID and is in one-to-one correspondence with the phone number for confirming the validity of the terminal equipment, each terminal equipment is provided with a registration validity period for limiting the registration time limit of the terminal equipment, and the terminal equipment needs to be registered again after the registration time limit is exceeded;
the validity of the terminal device means whether the terminal device is in the registration list, if so, the terminal device is valid and can carry out communication, and if not, the terminal device is invalid and cannot carry out communication.
The step 3 comprises the following steps:
step 3.1: the SIP server authenticates the equipment validity and the registration validity period of the first terminal equipment through the authentication module;
step 3.2: after the equipment effectiveness and the registration validity period of the first terminal equipment pass the authentication, a dialing call resonance module of the SIP server dynamically generates a dialing plan, and associates the first terminal equipment with a plurality of second terminal equipment through a phone number;
step 3.3: a dial-up call resonance module of the SIP server replies the attempted connection information to the first terminal equipment;
step 3.4: and a dial call resonance module of the SIP server respectively sends call request information to the plurality of second terminal devices according to the dial plan.
In the step 5, the audio/video stream of the first terminal device is sent to a coding transmission conversion module of the SIP server, the coding transmission conversion module converts the audio/video stream into audio/video streams with formats matched with the plurality of second terminal devices respectively, and correspondingly sends the converted audio/video streams to the plurality of second terminal devices.
In the step 6, if the second terminal device selects to establish video communication with the first terminal device, the second terminal device replies a communication signal to the first terminal device through the SIP server, and the first terminal device can perform audio-video telephone communication with the second terminal device; and if the second terminal equipment does not select to establish video communication with the first terminal equipment, the second terminal equipment replies a communication canceling signal to the first terminal equipment through the SIP server, and the first terminal equipment cannot perform audio-video telephone communication with the second terminal equipment.
After the second terminal device sends a communication signal to the SIP server, the SIP server sends a confirmation signal to the second terminal device, the SIP server sends a communication signal to the first terminal device, the first terminal device sends a confirmation signal to the SIP server, and the first terminal device and the second terminal device establish audio-video telephone communication.
In the step 6, in the real-time communication interaction process, the audio and video streams with different formats between the second terminal device and the first terminal device are transmitted after being coded and decoded by the coding transmission conversion module of the SIP server.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention can realize synchronous active calling of one terminal device to a plurality of terminal devices, realize resonance and video synchronization of the plurality of terminal devices, meet the requirements of cross-platform terminal device resonance and video synchronization communication through the SIP server, perfect the establishment and change service of communication session, meet the requirement of large-scale intelligent video communication, simplify and intelligentize communication flow, have low cost for improving the communication mode, are easy to maintain, and can be widely applied to the intelligent Internet of things system.
2. The invention adopts RTP protocol to transmit media stream, realizes the synchronism and stability of internal audio-video interaction in the LAN, can adapt to the transmission requirements of audio-video streams with different formats, and meets the requirements of resonance and video synchronization of different terminal devices.
3. The invention is based on SIP protocol, has good flexibility, expandability, convenience and cheapness, simultaneously has timely response of communication dialing and fast response speed of resonance ringing conversation, can replace the traditional telephone network communication mode, can establish conversation through PC, telephone and the like, and has strong universality.
Drawings
FIG. 1 is a schematic block diagram of a SIP-based multi-device resonance and video synchronization communication method of the present invention;
fig. 2 is a timing diagram of the communication method of the present invention based on the resonance and video synchronization of the SIP multiple devices.
In the figure, 1 first terminal device, 2 second terminal device, 21B 1 terminal, 22B 2 terminal, 23B 3 terminal, 24C terminal, 25D terminal, 3 SIP server, 31 SIP controller.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1 and 2, a communication method for SIP-based multi-device resonance and video synchronization includes the following steps:
step 1: the SIP server 3 is constructed.
The SIP server 3 is internally provided with a SIP controller 31, and the SIP controller 31 includes the following modules:
and the registration module is used for receiving and storing the information of the terminal equipment, distributing a phone number and a registration validity period to the terminal equipment needing resonance and video synchronous communication, and generating a registration list so that the terminal equipment needing resonance and video synchronous communication establishes communication connection through the phone number.
The information of the terminal equipment comprises equipment ID, each terminal equipment is provided with a unique equipment ID and is in one-to-one correspondence with the phone number for confirming the validity of the terminal equipment, each terminal equipment is provided with a registration validity period for limiting the registration time limit of the terminal equipment, and the terminal equipment needs to be registered again after the registration time limit is exceeded.
And the authentication module is used for authenticating the validity and the registration validity period of the terminal equipment, ensuring the safety of video communication and avoiding other equipment from illegally acquiring information.
The validity of the terminal device means whether the terminal device is in the registration list, if so, the terminal device is valid and can carry out communication, and if not, the terminal device is invalid and cannot carry out communication.
And the dialing call resonance module is used for dynamically generating a dialing plan and associating terminal equipment needing resonance and video synchronous communication.
And the coding transmission conversion module is used for coding and decoding the audio and video stream so as to be suitable for converting the audio and video streams in different formats and provide stable audio and video streams.
Step 2: the terminal device registers on a registration module of the SIP server 3, and the terminal device includes a first terminal device 1, a second terminal device 2, …, and an nth terminal device n, where n is a natural number greater than or equal to 2.
And step 3: the first terminal device 1 sends call request information "invite" to the SIP server 3, requesting video communication with a plurality of second terminal devices 2.
And step 3: the SIP server 3 transmits call request information "invite" to the plurality of second terminal apparatuses 2, respectively.
The step 3 comprises the following steps:
step 3.1: the SIP server 3 authenticates the device validity and the registration validity period of the first terminal device 1 through the authentication module. If the device ID in the call request information is consistent with the device ID corresponding to the first terminal device 1 in the registration list, the device validity of the first terminal device 1 in the registration list passes the authentication; if the first terminal device 1 is within the registration validity period when the call is requested, the registration validity period of the first terminal device 1 is authenticated.
Step 3.2: after the device validity and the registration validity period of the first terminal device 1 pass the authentication, the dialing call resonance module of the SIP server 3 dynamically generates a dialing plan, and associates the first terminal device 1 with a plurality of second terminal devices 2 through phone numbers.
Step 3.3: the dial call resonance module of the SIP server 3 replies the attempted connection information "try 100" to the first terminal apparatus 1.
Step 3.4: the dial call resonance module of the SIP server 3 sends call request information "invite" to the plurality of second terminal devices 2, respectively, according to the dial plan.
And 4, step 4: after receiving the call request information "invite" sent by the SIP server 3, the second terminal devices 2 respectively reply the attempted connection information "try 100" and the ringing information "ring 180" to the dial-up call resonance module of the SIP server 3, and the second terminal devices 2 start ringing at the same time, so that the video communication resonance function of the second terminal devices 2 is realized.
And 5: the dial call resonance module of the SIP server 3 sends ringing information "ring 180" of the plurality of second terminal devices 2 to the first terminal device 1, and the first terminal device 1 sends audio and video streams to the plurality of second terminal devices 2 through the SIP server 3 based on an RTP (Real-time Transport Protocol) Protocol to establish video communication connection.
In the step 5, the audio/video stream of the first terminal device 1 is sent to the encoding transmission conversion module of the SIP server 3, the encoding transmission conversion module converts the audio/video stream into audio/video streams with formats matched with the plurality of second terminal devices 2, respectively, and correspondingly sends the converted audio/video streams to the plurality of second terminal devices 2.
Step 6: the second terminal devices 2 can establish real-time communication interactive connection with the first terminal device 1 through audio and video stream conversion. In the real-time communication interaction process, audio and video streams with different formats between the second terminal device 2 and the first terminal device 1 are coded and decoded by the coding transmission conversion module of the SIP server 3 and then transmitted, and stable transmission of the audio and video streams is ensured based on an RTP protocol.
In the step 6, if the second terminal device 2 selects to establish video communication with the first terminal device 1, the second terminal device 2 replies a communication signal "200" to the first terminal device 1 through the SIP server 3, and the first terminal device 1 can perform audio-video telephone communication with the second terminal device 2; if the second terminal device 2 chooses not to establish video communication with the first terminal device 1, the second terminal device 2 replies a cancel communication signal cancel to the first terminal device 1 through the SIP server 3, and the first terminal device 1 cannot perform audio-video telephone communication with the second terminal device 2. Different second terminal devices 2 can select whether to establish audio-video telephone communication with the first terminal device 1 according to requirements.
After the second terminal device 2 sends the communication signal '200' to the SIP server 3, the SIP server 3 sends a confirmation signal 'ack' to the second terminal device 2, the SIP server 3 sends the communication signal '200' to the first terminal device 1, the first terminal device 1 sends the confirmation signal 'ack' to the SIP server 3, and the first terminal device 1 and the second terminal device 2 establish audio-video telephone communication.
Example 1:
step 1: the SIP server 3 is constructed.
The SIP server 3 is internally provided with a SIP controller 31, and the SIP controller 31 includes the following modules:
and the registration module is used for receiving and storing the information of the terminal equipment, distributing a phone number and a registration validity period to the terminal equipment needing resonance and video synchronous communication, and generating a registration list so that the terminal equipment needing resonance and video synchronous communication establishes communication connection through the phone number.
And the authentication module is used for authenticating the validity and the registration validity period of the terminal equipment, ensuring the safety of video communication and avoiding other equipment from illegally acquiring information.
And the dialing call resonance module is used for dynamically generating a dialing plan and associating terminal equipment needing resonance and video synchronous communication.
And the coding transmission conversion module is used for coding and decoding the audio and video stream so as to be suitable for converting the audio and video streams in different formats and provide stable audio and video streams.
Step 2: the terminal device registers on the registration module of the SIP server 3.
The registration list of the registration module includes a first terminal device 1 and five second terminal devices 2, and the five second terminal devices 2 are a B1 terminal 21, a B2 terminal 22, a B3 terminal 23, a C terminal 24 and a D terminal 25 in sequence.
And step 3: the first terminal device 1 transmits call request information "invite" to the SIP server 3, requesting video communication with the B1 terminal 21, the B2 terminal 22, and the B3 terminal 23.
And step 3: the SIP server 3 transmits call request information "invite" to the B1 terminal 21, the B2 terminal 22, and the B3 terminal 23, respectively.
The step 3 comprises the following steps:
step 3.1: the SIP server 3 authenticates the device validity and the registration validity period of the first terminal device 1 through the authentication module.
Step 3.2: after the device validity and the registration validity period of the first terminal device 1 are authenticated, the dial call resonance module of the SIP server 3 dynamically generates a dial plan, and associates the first terminal device 1 with the B1 terminal 21, the B2 terminal 22, and the B3 terminal 23 through phone numbers.
Step 3.3: the dial call resonance module of the SIP server 3 replies the attempted connection information "try 100" to the first terminal apparatus 1.
Step 3.4: the dial call resonance module of the SIP server 3 transmits call request information "invite" to the B1 terminal 21, the B2 terminal 22, and the B3 terminal 23, respectively, according to the dial plan.
And 4, step 4: after receiving the call request information "invite" sent by the SIP server 3, the B1 terminal 21, the B2 terminal 22, and the B3 terminal 23 respectively reply the attempted connection information "try 100" and the ringing information "ring 180" to the dial call resonance module of the SIP server 3, and the B1 terminal 21, the B2 terminal 22, and the B3 terminal 23 start ringing at the same time.
And 5: the dial call resonance module of the SIP server 3 sends the ringing information "ring 180" of the B1 terminal 21, the B2 terminal 22, and the B3 terminal 23 to the first terminal device 1, and the first terminal device 1 sends audio and video streams to the plurality of second terminal devices 2 through an RTP protocol to establish video communication connection. The audio and video stream of the first terminal device 1 is converted into an audio and video stream in a format matched with the B1 terminal 21, the B2 terminal 22 and the B3 terminal 23 through the encoding transmission conversion module of the SIP server 3.
Step 6: the B1 terminal 21 selects to establish video communication with the first terminal device 1, after the B1 terminal 21 sends a communication signal '200' to the SIP server 3, the SIP server 3 sends an acknowledgement signal 'ack' to the B1 terminal 21, the SIP server 3 sends a communication signal '200' to the first terminal device 1, the first terminal device 1 sends an acknowledgement signal 'ack' to the SIP server 3, and the first terminal device 1 establishes real-time audio-video telephone communication with the B1 terminal 21.
If the B2 terminal 22 and the B3 terminal 23 choose not to establish video communication with the first terminal device 1, the second terminal device 2 replies a cancel communication signal "cancel" to the first terminal device 1 through the SIP server 3, and hangs up the audio-video telephone communication.
The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A multi-equipment resonance and video synchronization communication method based on SIP is characterized in that: the method comprises the following steps:
step 1: constructing a SIP server (3);
step 2: the method comprises the steps that terminal equipment is registered on an SIP server (3), wherein the terminal equipment comprises first terminal equipment (1), second terminal equipment (2), … and nth terminal equipment n, and n is a natural number which is more than or equal to 2;
and step 3: the method comprises the following steps that a first terminal device (1) sends calling request information to an SIP server (3) to request video communication with a plurality of second terminal devices (2);
and step 3: the SIP server (3) respectively sends call request information to the second terminal devices (2);
and 4, step 4: after receiving the call request information sent by the SIP server (3), the second terminal devices (2) respectively reply the attempted connection information and the ringing information to the SIP server (3), and the second terminal devices (2) start ringing at the same time;
and 5: the SIP server (3) sends the ringing information of the second terminal devices (2) to the first terminal device (1), and the first terminal device (1) sends audio and video streams to the second terminal devices (2) through the SIP server (3) based on an RTP protocol to establish video communication connection;
step 6: and the plurality of second terminal devices (2) are in real-time communication interactive connection with the first terminal device (1).
2. The SIP-based multi-device resonance and video synchronization communication method as claimed in claim 1, wherein: in the step 1, the SIP server (3) is provided with a SIP controller (31) therein, and the SIP controller (31) comprises the following modules:
the registration module is used for receiving and storing the information of the terminal equipment, distributing a telephone number and a registration validity period to the terminal equipment needing resonance and video synchronous communication, generating a registration list and enabling the terminal equipment needing resonance and video synchronous communication to establish communication connection through the telephone number;
the authentication module is used for authenticating the validity and the registration validity period of the terminal equipment;
the dialing call resonance module is used for dynamically generating a dialing plan and associating terminal equipment needing resonance and video synchronous communication;
and the coding transmission conversion module is used for coding and decoding the audio and video stream.
3. The SIP-based multi-device resonance and video synchronization communication method as claimed in claim 2, wherein: the information of the terminal equipment comprises equipment IDs, each terminal equipment is provided with a unique equipment ID and is in one-to-one correspondence with the phone number for confirming the validity of the terminal equipment, each terminal equipment is provided with a registration validity period for limiting the registration time limit of the terminal equipment, and the terminal equipment needs to be registered again after the registration time limit is exceeded;
the validity of the terminal device means whether the terminal device is in the registration list, if so, the terminal device is valid and can carry out communication, and if not, the terminal device is invalid and cannot carry out communication.
4. The SIP-based multi-device resonance and video synchronization communication method as claimed in claim 2, wherein: the step 3 comprises the following steps:
step 3.1: the SIP server (3) authenticates the equipment validity and the registration validity period of the first terminal equipment (1) through the authentication module;
step 3.2: after the equipment effectiveness and the registration validity period of the first terminal equipment (1) pass the authentication, a dialing call resonance module of the SIP server (3) dynamically generates a dialing plan, and associates the first terminal equipment (1) with a plurality of second terminal equipments (2) through phone numbers;
step 3.3: a dial-up call resonance module of the SIP server (3) replies the attempted connection information to the first terminal equipment (1);
step 3.4: and a dialing call resonance module of the SIP server (3) respectively sends call request information to the second terminal equipment (2) according to the dialing plan.
5. The SIP-based multi-device resonance and video synchronization communication method as claimed in claim 2, wherein: in the step 5, the audio and video stream of the first terminal device (1) is sent to a coding transmission conversion module of the SIP server (3), the coding transmission conversion module respectively converts the audio and video stream into audio and video streams with a format matched with the plurality of second terminal devices (2), and correspondingly sends the converted audio and video streams to the plurality of second terminal devices (2).
6. The SIP-based multi-device resonance and video synchronization communication method as claimed in claim 1, wherein: in the step 6, if the second terminal device (2) selects to establish video communication with the first terminal device (1), the second terminal device (2) replies a communication signal to the first terminal device (1) through the SIP server (3), and the first terminal device (1) can perform audio-video telephone communication with the second terminal device (2); if the second terminal device (2) chooses not to establish video communication with the first terminal device (1), the second terminal device (2) replies a communication canceling signal to the first terminal device (1) through the SIP server (3), and the first terminal device (1) cannot perform audio-video telephone communication with the second terminal device (2).
7. The SIP-based multi-device resonance and video synchronization communication method as claimed in claim 6, wherein: after the second terminal device (2) sends a communication signal to the SIP server (3), the SIP server (3) sends a confirmation signal to the second terminal device (2), the SIP server (3) sends a communication signal to the first terminal device (1), the first terminal device (1) sends a confirmation signal to the SIP server (3), and the first terminal device (1) and the second terminal device (2) establish audio-video telephone communication.
8. The SIP-based multi-device resonance and video synchronization communication method as claimed in claim 2, wherein: in the step 6, in the real-time communication interaction process, the audio and video streams with different formats between the second terminal device (2) and the first terminal device (1) are transmitted after being coded and decoded by the coding transmission conversion module of the SIP server (3).
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| CN103139217A (en) * | 2013-02-21 | 2013-06-05 | 中国对外翻译出版有限公司 | Multi-party session achieving method based on session initiation protocol (SIP) |
| CN112565185A (en) * | 2020-10-30 | 2021-03-26 | 四川天翼网络服务有限公司 | SIP voice communication method based on browser |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1756343A (en) * | 2004-09-28 | 2006-04-05 | 中兴通讯股份有限公司 | Method for holding multi-point video conference by terminal dialing |
| KR20120084643A (en) * | 2011-01-20 | 2012-07-30 | (주)티아이스퀘어 | Method and apparatus for providing multimedia messaging service using smart terminal application |
| CN103139217A (en) * | 2013-02-21 | 2013-06-05 | 中国对外翻译出版有限公司 | Multi-party session achieving method based on session initiation protocol (SIP) |
| CN112565185A (en) * | 2020-10-30 | 2021-03-26 | 四川天翼网络服务有限公司 | SIP voice communication method based on browser |
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