CN108040218A - The means of communication and communication apparatus of a kind of video conference - Google Patents
The means of communication and communication apparatus of a kind of video conference Download PDFInfo
- Publication number
- CN108040218A CN108040218A CN201711384766.4A CN201711384766A CN108040218A CN 108040218 A CN108040218 A CN 108040218A CN 201711384766 A CN201711384766 A CN 201711384766A CN 108040218 A CN108040218 A CN 108040218A
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- special
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- mcu
- communication
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Classifications
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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
- H04N7/15—Conference systems
-
- 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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
- H04N7/155—Conference systems involving storage of or access to video conference sessions
Abstract
The invention discloses a kind of means of communication of video conference, include the following steps：Step 1：It is direct-connected by some E1 special lines between MCU and terminal, an E1 special line is chosen as main E1 special lines；Step 2：Meeting negotiation is carried out by main E1 special lines between MCU and terminal, the signaling detection and check and correction being numbered in negotiation；Step 3：E1 special line number of lines workable for MCU and terminal consultative conference reality, the code check of E1 special lines number of lines extension meeting according to workable for reality；Step 4：Meeting is successfully established, and starts transmission media data between MCU and terminal.The invention also discloses the communication apparatus of the means of communication based on video conference.The means of communication and communication apparatus of the video conference of the present invention realize and high-definition video communication are carried out in E1 private line conference TV systems, and the image for bringing high definition to user is enjoyed.
Description
Technical field
The present invention relates to a kind of method for realizing high-definition video communication, and in particular to a kind of means of communication of video conference.
The invention further relates to the communication apparatus of the means of communication based on the video conference.The invention belongs to multimedia information communication field.
Background technology
Video conferencing system refers to by existing various communication transfer media, by static state/dynamic image, the language of personage
The much informations such as sound, word, picture are distributed on the terminal device of each user so that geographically scattered user can lead to
Cross the various ways exchange of information such as image, sound.The agreement that the video device of domestic and international mainstream uses has sip series, is H.320
Row and H.323 series.Wherein, it then follows H.320 the video technique of agreement mainly apply with including E1, V.35, ISDN etc. is with circuit
On network based on exchange, it then follows the video communication network and video device of this standard are with its stability and reliability height, technology
The features such as standard Maturation, device category are enriched, network line private network is special is subject to those high to image quality requirements, emphasizes to stablize
The welcome of the colony of property and reliability.Vision Technology but based on H.320 agreement the utilizations of Internet resources, network it is flexible
There are inferior position for property etc..
With computer networking technology development and the deployment of broadband network scale, it then follows H.323 with the video signal of sip protocol
Equipment and video communication network become the mainstream of development, and this Vision Technology is mainly based upon TCP/IP technologies, it is possible to achieve much big
In the meeting of 2M code checks so that high definition becomes the standard configuration of video conference.The but QOS problems of IP based network, there are network to tremble
The problems such as dynamic, bag sequence confusion, network congestion, for needing high performance client, there are inferior position.
The advantages of how making full use of existing H.320 protocol system, overcomes H.320 agreement to be up to the use of 2M code checks
Scope, the HD video meeting that more than 2M is realized in H.320 protocol system are that the present invention needs that is studied and solved to ask
Topic.
The content of the invention
To solve the deficiencies in the prior art, the means of communication and communication it is an object of the invention to provide a kind of video conference
Equipment, so as to break through the inherent shortcoming that H.320 agreement is only applicable to narrowband video conference system, the image of high definition is brought to user
Enjoy.
In order to realize above-mentioned target, the present invention adopts the following technical scheme that：
A kind of means of communication of video conference, include the following steps：
Step 1：It is direct-connected by some E1 special lines between MCU and terminal；An E1 special line is chosen as main E1 special lines；
Step 2：Meeting negotiation is carried out by main E1 special lines between MCU and terminal, the signaling detection being numbered in negotiation
And check and correction；
Step 3：E1 special line number of lines workable for MCU and terminal consultative conference reality, the E1 according to workable for reality
Special line number of lines extends the code check of meeting；
Step 4：Meeting is successfully established, and starts transmission media data between MCU and terminal.
The means of communication of foregoing video conference, in step 1, MCU and terminal are all numbered E1 special lines, MCU and end
Hold the numbering to same root E1 special lines identical, main E1 special lines are interacted using H.221 frame structure using H.320 agreement；Other
The E1 special lines of numbering are used for walking main video code flow.
The means of communication of foregoing video conference, in step 1, E1 special lines have 32 time slots, and H.221 frame structure only uses
30 time slots of main E1 special lines, the 0th time slot and the 16th time slot of main E1 special lines without using；It is special using main E1 between MCU and terminal
The numbering signaling of the 16th slot timing transmission E1 special line circuits of line, other E1 special lines are in addition to the 0th time slot and the 16th time slot
Time slot is all for transmitting video.
The means of communication of foregoing video conference, in step 1, natural number numbering is carried out to E1 special lines since 1, is chosen
The E1 special lines that numbering is 1 are as main E1 special lines.
The means of communication of foregoing video conference, by N root E1 private line accesses between MCU and terminal, N is integer and 1<=
N<=4.
The means of communication of foregoing video conference, step 2 include：
Step 2a：MCU is on main E1 special lines to terminal originated calls；
Step 2b：Terminal is in the special on-line monitoring callings of main E1；
Step 2c：To during calling, MCU and terminal carry out H.320 meeting and consult terminal monitoring；
Step 2d：Whether monitoring E1 special lines have numbering signaling, and numbering signaling is not transferred to step 4；Monitor that E1 special lines have
During numbering signaling, whether detection numbering signaling is correct, incorrect, hangs up meeting, when numbering signaling is correct, is transferred to step 3.
The means of communication of foregoing video conference, step 3 include：
Step 3a：Mutually opposite other side sends the E1 special line number of lines that signaling tells that other side oneself uses for MCU and terminal；
Step 3b：After calling both sides obtain the E1 special line number of lines of other side, both minimum values are taken, have been obtained between the two
E1 special lines circuit workable for reality, calculates the encoder bit rate of video, extends the code check of meeting accordingly.
The means of communication of foregoing video conference, step 3b include：In the case of the N number of E1 special lines of use, without double fluid, v
=[(N-1) * 1920+ (1920-64)] kbit/s, wherein v are encoder bit rate, and N is integer and 1<=N<=4.
A kind of communication apparatus of video conference of the means of communication of aforementioned video meeting, including MCU and terminal, MCU and end
It is direct-connected by some E1 special lines between end.
The communication apparatus of aforementioned video meeting, by being connected between MCU and terminal by N root E1 special lines between MCU and terminal
Connect, N is integer and 1<=N<=4.
The invention has the beneficial effects that：The means of communication and communication apparatus of the video conference of the present invention realize special in E1
High-definition video communication is carried out in line TV conference system, the image for bringing high definition to user is enjoyed.
Brief description of the drawings
Fig. 1 is the line graph being preferable to carry out between middle MCU, terminal of the present invention.
Fig. 2 is the flow chart being preferable to carry out of the present invention；
Process is established in the meeting being preferable to carry out that Fig. 3 is the present invention.
Embodiment
Make specific introduce to the present invention below in conjunction with the drawings and specific embodiments.
Shown referring to Figures 1 and 2, a kind of means of communication of video conference of the present invention, include the following steps：
Step 1：Direct-connected by some E1 special lines between MCU and terminal, MCU and terminal are all numbered E1 special lines,
MCU is identical with the numbering of terminal-pair same root E1 special lines；An E1 special line is chosen as main E1 special lines.Can be in the following way
It is numbered：Natural number numbering is carried out to E1 special lines since 1, preferably chooses and numbers the E1 special lines for being 1 as main E1 special lines.
In E1 special line quantity, the present invention is not limited thereto, preferably, passing through 1 to 4 E1 between MCU and terminal
Private line access, i.e., preferred to suggest most multi-purpose 4 E1 special lines, i.e. the code check of maximum 8M, 8M can support the video council of high definition completely
View.
In actual setting, a lot of E1 special lines are configured on MCU (multi control unit, multipoint control unit)
For one group (it is maximum 8M code checks to recommend maximum 4 E1 special lines), it is numbered (from 1 to 4).Equally configured in terminal
More E1 special lines, are numbered it.Then the MCU E1 special lines identical with being numbered in terminal is docked.
The E1 special lines that numbering is 1 are interacted, the E1 of other numberings is special using frame structure H.221 using H.320 agreement
Line is used for walking main video code flow, i.e. main view frequency code stream is divided into two parts, and a part walks the video channel on the E1 special lines of numbering 1,
A part walks the E1 special lines of expansion.
Step 2：Meeting negotiation is carried out by main E1 special lines between MCU and terminal, the signaling detection being numbered in negotiation
And check and correction.
Specifically, E1 special lines have 32 time slots, and H.221 frame structure only uses 30 time slots of E1 special lines, 0 and 16 time slots
Without using.In order to be different from narrowband video meeting H.320, calling both sides use the transmission E1 special line circuit numbers of 16 slot timings
Signaling (self-defined bas codes).Meeting both sides monitor 16 time slots, if receive numbering signaling and number it is identical with the numbering of oneself,
Then agree to receive calling, hold the H320 broadbands meeting of extension.Refuse calling if difference is numbered；Do not detect numbering letter
It is arrowband meeting to make the meeting then held.
Therefore, for main E1 special lines H.221 frame structure only use main E1 special lines 30 time slots, main E1 special lines the 0th when
Gap and the 16th time slot without using；Between MCU and terminal the volume of E1 special line circuits is transmitted using the 16th slot timing of main E1 special lines
Number signaling, other time slots of E1 special lines in addition to the 0th time slot and the 16th time slot are all for transmitting video.
It developed below and this step is illustrated, it includes the following steps：
Step 2a：MCU is on main E1 special lines (being the E1 special lines of numbering 1 in the present embodiment) to terminal originated calls；
Step 2b：Terminal is in the special on-line monitoring callings of main E1；
Step 2c：To during calling, MCU and terminal carry out H.320 meeting and consult terminal monitoring；
Step 2d：Whether monitoring E1 special lines have numbering signaling, and numbering signaling is not transferred to step 4；Monitor that E1 special lines have
During numbering signaling, whether detection numbering signaling is correct, incorrect, hangs up meeting, when numbering signaling is correct, is transferred to step 3.
Step 3：E1 special line number of lines workable for MCU and terminal consultative conference reality, the E1 according to workable for reality
Special line number of lines extends the code check of meeting.The expansion of this step includes：
Step 3a：Mutually opposite other side sends the E1 special line number of lines that signaling tells that other side oneself uses for MCU and terminal；
Step 3b：After calling both sides obtain the E1 special line number of lines of other side, both minimum values are taken, have been obtained between the two
E1 special lines circuit workable for reality, calculates the encoder bit rate of video, extends the code check of meeting accordingly.Step 3b includes：Make
With N number of E1 special lines, without double fluid in the case of, v=[(N-1) * 1920+ (1920-64)] kbit/s, wherein v is encoder bit rate, N
For integer and 1<=N<=4.
Step 4：Meeting is successfully established, and the frame structure of main E1 special lines is distributed according to H.221 agreement, and the 30 of other E1 special lines
Time slot is all for sending video code flow.16 time slots of other E1 special lines will also be used for transmitting E1 numberings, for detecting MCU and end
Hold the numbering of both sides whether consistent.I.e. video divides two parts to transmit, and for a part on main E1 special lines, remainder is special in other E1
On line.Start transmission media data between MCU and terminal.
To sum up direct-connected by 1 to 4 E1 special lines between MCU of the present invention and terminal, both numberings one to E1 special lines
Cause, transmit E1 special lines numbering using 16 time slots of E1 special lines, the E1 special lines that numbering is 1 transmit H.320 agreement.The foundation of meeting
Process is completed according to H.320 agreement, and signaling detection and check and correction for 16 time slots are added in negotiations process, is established in meeting
Both sides send customized BAS to consult the actual E1 special lines number N (1 of this meeting after completing<=N<=4), so as to extend
The E1 special lines time slot of the code check of meeting to 1920k*N. numberings 1 is distributed according to H.221 agreement, and the E1 special lines of other numberings remove 0,16
Time slot in addition is all for transmitting video.
The method of the present invention is preferably applied to the circuit-switched network based on E1 special lines.The E1 special line time slots of numbering 1 are pressed
Distributed according to H.221 agreement.Utilize 16 slot transmission E1 special line numbering signalings of each E1 special lines.
Further, as shown in Figure 1, the present invention proposes the communication apparatus based on the above-mentioned video conference means of communication, including
MCU and terminal, it is direct-connected by some E1 special lines between MCU and terminal.E1 special lines include a main E1 special line；MCU and end
Meeting negotiation is carried out by main E1 special lines between end, the signaling detection and check and correction being numbered in negotiation；MCU and terminal consultation meeting
E1 special line number of lines workable for discussing reality, the code check of E1 special lines number of lines extension meeting according to workable for reality；Meeting
After view is successfully established, start transmission media data between MCU and terminal.
Further, the present invention preferably between MCU and terminal by being by N root E1 private line accesses, N between MCU and terminal
Integer and 1<=N<=4.I.e. preferred to suggest most multi-purpose 4 E1 special lines, i.e. the code check of maximum 8M, 8M can support high definition completely
Video conference.
A further embodiment is drawn below, to illustrate, as shown in Figure 3.3 is basic for the calling of the present invention
Flow chart, specifically includes following steps：
S201.MCU (multi control unit) is on the E1 special lines of numbering 1 to terminal originated calls；
S202. E1 special on-line monitoring calling of the terminal in numbering 1；
S203. terminal monitoring carries out H.320 meeting and consults to during calling.
Whether 16 time slots for S204. monitoring E1 special lines have numbering signaling, and numbering signaling is not transferred to S207
S205. monitor that 16 time slot of E1 special lines has numbering signaling, whether detection numbering signaling is correct, incorrect, is transferred to
S208, numbering is correct, checks whether meeting code check is 1920K, is not that 1920K is transferred to S207, otherwise turns S206.
S206. both sides send mutually signaling, tell the E1 special line numbers of other side one's own side, negotiate common E1 special lines number N,
Actual meeting code check should be 1920K*N.
S207. meeting is successfully established, and both sides start transmission media data
S208. both sides no matter who hang up meeting, meeting adjourned.
It can be seen from the above that the present invention proposes a kind of side that broadband HD video meeting is realized in E1 private line conference TV systems
Method, H.320 agreement can only be run tradition on an E1 special line, maximal rate 1920kbit/s, and the present invention is based on H.320 assisting
View extension, can be held a meeting using more E1 special lines, so that meeting code check has been brought up to N*1920kbit/s.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the invention is not limited in any way for above-described embodiment, all to be obtained by the way of equivalent substitution or equivalent transformation
Technical solution, all falls within protection scope of the present invention.
Claims (10)
1. a kind of means of communication of video conference, it is characterised in that include the following steps：
Step 1：It is direct-connected by some E1 special lines between MCU and terminal；An E1 special line is chosen as main E1 special lines；
Step 2：Meeting negotiation is carried out by main E1 special lines between MCU and terminal, the signaling detection being numbered in negotiation and school
It is right；
Step 3：E1 special line number of lines workable for MCU and terminal consultative conference reality, the E1 special lines according to workable for reality
Number of lines extends the code check of meeting；
Step 4：Meeting is successfully established, and starts transmission media data between MCU and terminal.
2. the means of communication of video conference according to claim 1, it is characterised in that in step 1, MCU and terminal are all right
E1 special lines are numbered, and MCU is identical with the numbering of terminal-pair same root E1 special lines, and main E1 special lines are used using H.221 frame structure
H.320 agreement interacts；The E1 special lines of other numberings are used for walking main video code flow.
3. the means of communication of video conference according to claim 2, it is characterised in that in step 1, E1 special lines have 32
Time slot, H.221 frame structure only use 30 time slots of main E1 special lines, the 0th time slot and the 16th time slot of main E1 special lines without using；
The numbering signaling of E1 special line circuits is transmitted using the 16th slot timing of main E1 special lines between MCU and terminal, other E1 special lines remove
Time slot beyond 0th time slot and the 16th time slot is all for transmitting video.
4. the means of communication of video conference according to claim 1, it is characterised in that special to E1 since 1 in step 1
Line carries out natural number numbering, chooses and numbers the E1 special lines for being 1 as main E1 special lines.
5. the means of communication of video conference according to claim 1, it is characterised in that pass through N roots E1 between MCU and terminal
Private line access, N are integer and 1<=N<=4.
6. the means of communication of video conference according to claim 1, it is characterised in that step 2 includes：
Step 2a：MCU is on main E1 special lines to terminal originated calls；
Step 2b：Terminal is in the special on-line monitoring callings of main E1；
Step 2c：To during calling, MCU and terminal carry out H.320 meeting and consult terminal monitoring；
Step 2d：Whether monitoring E1 special lines have numbering signaling, and numbering signaling is not transferred to step 4；Monitor that E1 special lines have numbering
During signaling, whether detection numbering signaling is correct, incorrect, hangs up meeting, when numbering signaling is correct, is transferred to step 3.
7. the means of communication of video conference according to any one of claims 1 to 6, it is characterised in that step 3 includes：
Step 3a：Mutually opposite other side sends the E1 special line number of lines that signaling tells that other side oneself uses for MCU and terminal；
Step 3b：After calling both sides obtain the E1 special line number of lines of other side, both minimum values are taken, have been obtained actual between the two
Workable E1 special lines circuit, calculates the encoder bit rate of video, extends the code check of meeting accordingly.
8. the means of communication of video conference according to claim 7, it is characterised in that step 3b includes：Using N number of E1
Special line, without double fluid in the case of, v=[(N-1) * 1920+ (1920-64)] kbit/s, wherein v is encoder bit rate, N for integer and
1<=N<=4.
9. a kind of communication apparatus based on the means of communication described in claim 1, including MCU and terminal, it is characterised in that MCU and
It is direct-connected by some E1 special lines between terminal.
10. communication apparatus according to claim 9, by passing through N root E1 special lines between MCU and terminal between MCU and terminal
Connection, N is integer and 1<=N<=4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711384766.4A CN108040218A (en) | 2017-12-20 | 2017-12-20 | The means of communication and communication apparatus of a kind of video conference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711384766.4A CN108040218A (en) | 2017-12-20 | 2017-12-20 | The means of communication and communication apparatus of a kind of video conference |
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| Publication Number | Publication Date |
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| CN108040218A true CN108040218A (en) | 2018-05-15 |
Family
ID=62100098
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711384766.4A Pending CN108040218A (en) | 2017-12-20 | 2017-12-20 | The means of communication and communication apparatus of a kind of video conference |
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Application publication date: 20180515 |