CN104683730B - Transmit videoconference data method and video conferencing system - Google Patents
Transmit videoconference data method and video conferencing system Download PDFInfo
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- CN104683730B CN104683730B CN201510096936.3A CN201510096936A CN104683730B CN 104683730 B CN104683730 B CN 104683730B CN 201510096936 A CN201510096936 A CN 201510096936A CN 104683730 B CN104683730 B CN 104683730B
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Abstract
The present invention, which provides a kind of transmission videoconference data method and video conferencing system, method, to be included：S1. terminal to server sends the first registration information；S2. server registers approval in-formation to terminal replies first, and the first registration approval in-formation includes：The first optimal network circuit between the IP address and terminal and server of a plurality of network access line of server；S3 terminals send network monitor bag by each IP address of a plurality of network access line to server；S4 terminal to server sends the second registration information；S5. server optimizes the first optimal network circuit the second optimal network circuit of acquisition according to the second registration information and network monitor bag, and approval in-formation is registered to terminal replies second；And S6. terminals receive the second registration approval in-formation, the second optimal network circuit and server interaction are used in video conference and transmits videoconference data.It can optimize the data transfer during terminal progress video conference for supporting such as H.323 across a network of communication protocol.
Description
Technical field
The present invention relates to Computer Applied Technology field, and videoconference data side is transmitted especially at terminal and server
Method and video conferencing system.
Background technology
In H.323 communication protocol standard, there is a special serial standard to define communication protocol across NAT
Use under (Network Address Translation, network address translation) environment：H.460.x serial, it includes：
RAS is related H.460.17, and call signaling is related H.460.18, and media are related H.460.19, H.460.20 etc..
Wherein H.460.17 define and transmit the specification of H.323 RAS information using H.225.0 connecting, H.460.18
Define H.323 signal in inter-network, across the specification transmitted under firewall environment, H.460.19 (Traversal of ITU-T
H.323 media across network address translators and firewalls, 03 month 2013) regulation
The LC (Logical Channel, logical channel) of audio frequency and video RTP code streams simple negotiation, allows video conference terminal to exist
Across in the environment of NAT, pass through a GK in public network (or similar to network that each terminal can have access to)
(Gatekeeper, gatekeeper) comes transfer agreement, media data, sets up whole meeting path.
However, it is necessary to which the entity terminal conversed, is likely to be at a variety of different in the Internet network of reality
Under network environment, if only being realized with the standard of existing H.323 communication protocol with reference to H.460.x serial consensus standard
If each terminal-pair under this complex network environment is led to, the network data transmission efficiency of each terminal room and its institute in actual meeting
Difference is there may be on the Theoretical Rate of network, and causes communication effect preferable not to the utmost.
By taking the network situation of China as an example：
A. if an entity terminal using telecommunications broadband will be carried out pair with an entity terminal using Netcom broadband
It is logical, its network transmission efficiency, the entity end using telecommunications broadband (or two equally use Netcom broadband) same compared to two
To leading between end, can have a greatly reduced quality.
B. use intercity net and access two entity terminals using the mode of internet, also can in the efficiency of data transfer
It is different.
Once whole conference system is run under above-mentioned environment, only in accordance with existing ITU-T H.460 (ITU-T,
International Telecommunication Union's telecommunication standardsization tissue) protocol specification of series realizes the meeting to if logical, it would be possible to occur
The effect of whole meeting is preferable not to the utmost, or even the situation that efficiency is low.
The content of the invention
The defects of present invention is in order to overcome above-mentioned prior art to exist, there is provided one kind is transmitted videoconference data method and regarded
Frequency conference system its can optimize different network environments terminal carry out video conference when data transfer.
The present invention provides a kind of transmission videoconference data method, including：S1. terminal to server sends the first registration and asked
Information is sought, first registration information includes the IP address of the terminal, and the server has a plurality of network access line
Road；S2. the server receives first registration information, and according to the IP address of the terminal and the server
The first optimal network circuit described in a plurality of network access line decision-making between terminal and the server, to the terminal replies
First registration approval in-formation, the first registration approval in-formation include：The IP of a plurality of network access line of the server
Location and the first optimal network circuit；S3. the terminal receives the first registration approval in-formation, and passes through a plurality of net
Each IP address of network line attachment sends network monitor bag to the server；S4. the terminal sends the to the server
Two registration informations, second registration information are used for registration of the terminal on the server described in keep-alive；S5. institute
State server and receive the network monitor bag and second registration information, and according to second registration information with
And the network monitor bag optimizes the first optimal network circuit and obtains the second optimal network circuit, to the terminal replies the
Two registration approval in-formations, the second registration approval in-formation include the second optimal network circuit；And terminal connects described in S6.
The second registration approval in-formation is received, in video conference using the second optimal network circuit and the server interaction simultaneously
Transmit the videoconference data.
Preferably, the step S6 includes：The server is connected by the second optimal network circuit and the terminal
Connect, and by the terminal originated calls or receive calling；And the server by the second optimal network circuit to institute
Terminal is stated to send the videoconference data or receive the videoconference data sent by the terminal.
Preferably, the step S3 includes：The terminal is by each IP addresses of a plurality of network access line to institute
State server and persistently send the network monitor bag with lasting the second optimal network circuit for obtaining optimization.
Preferably, the step S4 includes：The terminal persistently sends second registration request to the server and believed
Breath, wherein, server is stated according to each second registration information and each network monitor bag, real-time optimization institute
State the first optimal network circuit and obtain the second optimal network circuit.
Preferably, also include after the step S3：If the terminal before the second optimal network circuit is obtained, enters
Video conference, then the terminal using the first optimal network circuit and the server interaction and transmitted in video conference
The videoconference data.
Preferably, the terminal and the server are supported and follow ITU-T H.323 agreements, and possess and be H.460
The support of row agreement.
According to a further aspect of the invention, a kind of video conferencing system is also provided, including：Main calling terminal, called
Terminal and server, the main calling terminal and the called terminal are under across a network environment, the video conferencing system
Using above-mentioned transmission videoconference data method.
Preferably, the main calling terminal and the called terminal are under across a network environment, the main calling terminal
In first network, the called terminal is in the second network.
According to a further aspect of the invention, a kind of transmission videoconference data method in end is also provided, including：
A. the first registration information is sent to server, first registration information includes the IP address of the terminal, described
Server has a plurality of network access line；B. the first registration approval in-formation that the server is replied, first note are received
Volume approval in-formation includes：Between the IP address and the terminal and the server of a plurality of network access line of the server
The first optimal network circuit；C. network is sent to the server by each IP address of a plurality of network access line to supervise
Bag is surveyed, the network monitor bag is used for the network condition for detecting each IP address of a plurality of network access line；D. to described
Server sends the second registration information, and second registration information is used for terminal described in keep-alive in the server
Registration；E. the second registration approval in-formation that the server is replied is received, the second registration approval in-formation includes second most
Excellent network line, the first optimal network circuit described in the second optimal network line optimization；And F. leads in video conference
Cross the second optimal network circuit and the server interaction and transmit the videoconference data.
Preferably, the step F includes：F1. it is connected by the second optimal network circuit with the server, concurrently
Play calling or receive calling；And F2. sends the video conference by the second optimal network circuit to the server
The videoconference data that data or receiving are sent by the server.
Preferably, the step C includes：Held by each IP address of a plurality of network access line to the server
Supervention send the network monitor bag with lasting the second optimal network circuit for obtaining optimization.
Preferably, the step D includes：Second registration information is persistently sent to the server, wherein, it is right
Every second registration information, the terminal receive the corresponding second registration approval in-formation, the second registration approval
The second optimal network circuit that information includes is according to each second registration information and each network
Monitor the first optimal network circuit described in bag real-time optimization and obtain.
Preferably, also include after the step B：If the terminal before the second optimal network circuit is obtained, enters
Video conference, then the terminal using the first optimal network circuit and the server interaction and transmitted in video conference
The videoconference data.
According to a further aspect of the invention, a kind of transmission videoconference data method at server is also provided, wrapped
Include：A. the first registration information sent by terminal is received, first registration information is with including the IP of the terminal
Location, the server have a plurality of network access line；B. according to the IP address of the terminal and a plurality of net of the server
The first optimal network circuit described in network line attachment decision-making between terminal and the server, and to the terminal replies first
Approval in-formation is registered, the first registration approval in-formation includes：The IP address of a plurality of network access line of the server and
The first optimal network circuit；C. the net sent by the terminal from each IP address of a plurality of network access line is received
Network monitoring bag, the network monitor bag are used for the network condition for detecting each IP addresses of a plurality of network access line；D. connect
The second registration information sent by the terminal is received, second registration information is used for terminal described in keep-alive described
Registration on server；E. the first optimal net is optimized according to second registration information and the network monitor bag
Winding thread road obtains the second optimal network circuit, and approval in-formation, the second registration approval letter are registered to the terminal replies second
Breath includes the second optimal network circuit；And f. uses the second optimal network circuit and the end in video conference
End interaction simultaneously transmits the videoconference data.
Preferably, the step f includes：F1. it is connected by the second optimal network circuit with the terminal, and by institute
State terminal originated calls or receive calling；And f2. described in the second optimal network circuit to terminal transmission by regarding
The videoconference data that frequency conferencing data or receiving are sent by the terminal.
Preferably, the step c includes：Reception is held by the terminal from each IP address of a plurality of network access line
The network monitor bag that supervention is sent.
Preferably, the step d includes：Second registration information persistently sent by the terminal is received, its
In, the server is according to each second registration information, and described in each network monitor bag real-time optimization
First optimal network circuit obtains the second optimal network circuit.
The present invention sends network monitor bag by each IP address of a plurality of network access line to server, and dynamic monitoring is every
The optimal network circuit of the individual terminal for accessing this server so that the terminal of different network environments walks optimal net when entering meeting
Winding thread road, so as to lift the data transmission efficiency of whole meeting, lift quality and the experience of meeting.That is, make gatekeeper with
Agreement and data between terminal carry out using optimal network circuit when NAT is passed through, so that the signaling and code of whole video conference
Stream can go on a most fast path, accelerate the negotiation and communication of video, fully excavate and route the advantage of multi-thread road network,
And the responsible balanced function of spacing Multi net voting circuit.
Brief description of the drawings
Its example embodiment is described in detail by referring to accompanying drawing, above and other feature and advantage of the invention will become
It is more obvious.
Fig. 1 shows the schematic diagram of video conferencing system according to embodiments of the present invention.
Fig. 2 shows the flow chart of transmission videoconference data method according to embodiments of the present invention.
Fig. 3 shows the flow chart of terminal according to embodiments of the present invention and server registration.
Fig. 4 shows main calling terminal according to embodiments of the present invention and the timing diagram of server interaction.
Fig. 5 shows the timing diagram of called terminal according to embodiments of the present invention and server interaction.
Fig. 6 shows that terminal request according to embodiments of the present invention opens the timing diagram of logical channel.
Fig. 7 shows that the timing diagram of logical channel is opened in server request according to embodiments of the present invention.
Embodiment
Example embodiment is described more fully with referring now to accompanying drawing.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, these embodiments are provided so that the present invention will
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Identical is attached in figure
Icon note represents same or similar structure, thus will omit repetition thereof.
Fig. 1 shows the schematic diagram of video conferencing system according to embodiments of the present invention.Transmission videoconference data is
System includes main calling terminal 111, called terminal 112, route 121, route 122 and server 130 and formed.Main calling terminal
111 and called terminal 112 may be under across a network environment, main calling terminal 111 is in first network, called terminal
112 are in the second network.For example, main calling terminal 111 is in communication network, called terminal 112 is in UNICOM's network.Example again
Such as, terminal 111 is made to be in intercity network, called terminal 112 is in internet.Main calling terminal 111 and called terminal
112 can be MT (terminal) or MCU (multipoint control unit), and support such as H.323 communication protocol.Route 121,122 can be with
It is NAT (network address switching equipment) or FW (fire wall).Server 130 can be GK (Gatekeeper, gatekeeper) or
TS (Traversal Server, pass through server), and support for example H.323 in ITU-T H.460 communication protocols.Wherein,
TS includes GK function, and it further comprises in addition to GK function, the function such as Call Agent.Main calling terminal 111 is logical
Route 121 is crossed to interact with server 130.Called terminal 112 is interacted by route 122 with server 130.Main calling terminal
111 carry out video conference with called terminal 112 by server 130, and transmit videoconference data.In some change case
In, server 130 and main calling terminal 111 are located at consolidated network, and called terminal 112 is located at another network, server 130 and
Main calling terminal 111 is communicated by routeing with called terminal 112.In other change case, server 130 and called
Terminal 112 is located at consolidated network, and main calling terminal 111 is located at another network, and server 130 and called terminal 112 pass through road
By being communicated with main calling terminal 111.Specifically, main calling terminal 111, called terminal 112 and server 130 can be propped up all
Hold such as H.323 communication protocol, and H.460 system is led to using such as H.323 ITU-T in communication protocol in video conference
Believe that agreement carries out data interaction.
Main calling terminal 111 and called terminal 112 and the interactive step of server 130 are with reference to figure 2.Main calling terminal
111 and called terminal 112 interaction can be connected with server 130 by a plurality of network access line.By provided by the invention
Transmit videoconference data method, server 130 can in a plurality of network access line decision-making optimal network circuit, Jin Ertong
Optimal network circuit is crossed to be connected and interact with main calling terminal 111 and called terminal 112.Specifically, it is provided by the invention
Transmission videoconference data method comprises the following steps：
It is step S101 first, terminal to server sends the first registration information.First registration information includes
The IP address of the terminal.First registration information is used for server registration end message.
Step S102, server receive the first registration information, and according to a plurality of of the IP address of terminal and server
Network access line decision-making the first optimal network circuit.In one embodiment, server can judge eventually according to IP address of terminal
The residing network in end, and then matched with a plurality of network access line of server, the first optimal network circuit is gone out with decision-making.First
The decision mode not limited to this of optimal network circuit, it can also have other implementations.Server is to terminal replies first
Approval in-formation is registered, the first registration approval in-formation includes the IP address and the first optimal net of a plurality of network access line of server
Winding thread road, the first registration approval in-formation are adapted with the first registration information.
Step S103, terminal receive the first registration approval in-formation, and by each IP address of a plurality of network access line to
Server sends network monitor bag, and network monitor bag is used for the network condition for detecting network access line.In a preference, eventually
End persistently sends network monitor bag to server by each IP address of a plurality of network access line, and then to a plurality of network insertion
The network condition of circuit is monitored in real time.
Step S104. terminal to server sends the second registration information.In a preference, terminal to server is held
Supervention send registration of second registration information with the keep-alive terminal at the server.
Step S105. servers receive network monitor bag and the second registration information, and are believed according to the second registration request
Breath and network monitor bag optimize the first optimal network circuit and obtain the second optimal network circuit.Second optimal network circuit is one
It is identical with the first optimal network circuit in a little embodiments, and in further embodiments, it is different from the first optimal network circuit.Tool
For body, when the first optimal network circuit is still optimal, second is identical with the first optimal network circuit.Server returns to terminal
Multiple second registration approval in-formation, the second registration approval in-formation include the second optimal network circuit.Second registration approval in-formation and the
Two registration informations are adapted.When terminal continues to send network monitor bag and the second registration information to server, clothes
Device be engaged according to each network monitor bag and the second registration information, Real-time Decision the second optimal network circuit.Preferably, for every
Second optimal network circuit of Real-time Decision is put into the second registration approval in-formation, entered by individual second registration information, server
And the second registration approval in-formation is back to end.
Step S106, terminal receive second registration approval in-formation, in video conference using the second optimal network circuit with
Server interaction simultaneously transmits videoconference data.Specifically, terminal is after the second registration approval in-formation is received, when its reception
Or initiation is called when entering video conference, its data interaction just uses the second optimal network circuit.In a change case, work as registration
When step does not proceed to decision-making the second optimal network circuit also, terminal has been enter into video conference, and now, terminal is in video conference
When, the first optimal network circuit and server interaction can be used and transmit videoconference data.And in registration step to step
After S106, when terminal receives or initiation calling enters video conference, it is used interchangeably the second optimal network with server data
Circuit.
In one embodiment, terminal also includes with interacting for server in step s 106：Call phase and data transfer
Stage.
In call phase, server is connected by the second optimal network circuit with terminal, and by terminal originated calls or is connect
Receive calling.Specifically, when terminal is as main calling terminal, approval request information is sent by terminal to server first.Clothes
Business device replys license approval in-formation, and license approval in-formation includes the IP address of the second optimal network circuit.Terminal the reception server
The license approval in-formation of reply, and the IP address foundation and the connection of server for passing through the second optimal network circuit.When terminal is made
For called terminal when, the Service controll configured information that is sent first by terminal the reception server.Service controll configured information bag
Include the IP address of the second optimal network circuit.Terminal to server replys Service controll response message, and passes through the second optimal net
The IP address on winding thread road establishes the connection with server.
In data transfer phase, server sends videoconference data or receiving by the second optimal network circuit to terminal
The videoconference data sent by terminal.
Specifically, when terminal to server asks to open logical channel, first is sent by terminal to server first
Open logical channel solicited message.Then, server opens logical channel response message to terminal replies first, and the first opening is patrolled
Collecting channel response information includes the IP address of the second optimal network circuit.Terminal by the IP address of the second optimal network circuit to
Server sends videoconference data.When server opens logical channel to terminal request, terminal the reception server first is sent out
Second sent opens logical channel solicited message, and the second opening logical channel solicited message includes the IP of the second optimal network circuit
Address.Terminal to server replys second and opens logical channel response message.Afterwards, terminal receive by server by second most
The videoconference data that the IP address of excellent network line is sent.
Preferably, between terminal and server, it calls related step and flow, and either master exhales, or is exhaled, all
Such as standard H.323 and H.460 agreement can be followed, the IP of all destination servers can use to be determined in registration process
The optimal network circuit IP address that plan comes out.
Below by by Fig. 3 to Fig. 7 specific embodiment, transmission videoconference data method provided by the invention is described.
Fig. 3 shows the flow chart of terminal according to embodiments of the present invention and server registration.
In the present embodiment, terminal supports such as H.323 agreement, and server supports such as H.323 ITU-T in agreement
H.460 serial protocols standard and possess multiple network access lines.Register flow path comprises the following steps：
Step S201, terminal to server send heavyweight RRQ (heavyweight Registration the first notes of Request
Volume solicited message), and it is registered in server.
Step S202, server is after the heavyweight RRQ of terminal is received, according to this heavyweight RRQ source IP addresses
The IP addresses of multiple network access lines of (the namely IP address of terminal) and server, carry out decision-making terminal and connect with server
The optimal network circuit connect.Optimal network circuit can carry out decision-making according to IP sections, can also be by including but are not limited to
H.323RAS (Registration, Admission and Status) non-standard message, or ICMP (controls
Message protocol processed) bag, or carry out decision-making the methods of the message of pure proprietary protocol.
Step S203, server follows the terminal of registration H.323 relevant criterion rule and flow and verified, if checking
By then replying terminals of the RCF (Registration Confirm, registering approval in-formation) to registration.RCF include except comprising
H.323RCF outside information, in addition to the multiple of the server of the nonstandard message mode carryings of H.323 non-standard of standard
The IP address for the optimal network circuit that the IP address and step S202 of network access line are drawn, in order to which the SS later is exhaled
Cry or receive to be used during calling.
Step S204, the IP address that terminal continues multiple network access lines to server send NetDetect bag (nets
Network monitoring bag), the network condition of multiple network access lines of server is detected.
Step S205, terminal continue to server send lightweight RRQ (lightweight Registration Request, the
Two registration informations), with the registration of keep-alive terminal on the server.Lightweight RRQ can be additionally used between terminal and server
Optimal network circuit Continuous optimization and adjustment.
Step S206, the network condition Optimal Decision-making that server is detected according to lightweight RRQ and NetDetect bag is most
Excellent network line.
Step S207, server is responded to the lightweight RRQ that each terminal is sent, and is carried in the RCF of reply
Current institute's decision-making come out with the optimal network circuit corresponding to the terminal.Wherein, optimal network circuit is with H.323 non-
The form of the nonstandard information of standard carries out packing transmission.In a specific embodiment, server is according to NetDetect bags
Information may determine that the network condition of each IP address of server.
Fig. 4 shows main calling terminal according to embodiments of the present invention and the timing diagram of server interaction.
Reference picture 4, when main calling terminal 111 has registered upper server 130, and get main calling terminal 111 and clothes
It is engaged in after the optimal network line information between device 130, when a certain terminal actively initiates calling in the present invention, itself and server 130
Between interaction timing diagram.Wherein, main calling terminal 111 supports H.323 agreement, and server 130 supports that H.460 ITU-T is
Row consensus standard.Also, main calling terminal 111 interacts with server 130 across route 121.
First, step S301, in accordance with standard, H.323 flow sends ARQ (Admission to main calling terminal 111
Request, approval request information) arrive server 130.
Step S302, if calling is allowed to, server 130 will return to ACF (Admission Confirm, license approval
Information), while the field dstCallSignalAddress in ACF is the main calling terminal 111 obtained in step S206
Optimal network circuit IP address.In some change case, field dstCallSignalAddress is in step S202
The IP address of the optimal network circuit of the main calling terminal 111 obtained.
Step S303, main calling terminal 111 is according to the IP of field dstCallSignalAddress in the ACF of reception
Location, create the TCP of an ITU-T H.225.0 and be connected to server 130.
Step S304, main calling terminal 111 send the SETUP information of ITU-T H.225.0 to server 130.
Step S305, server 130 follow the normal process of ITU-T H.460.18, are carried out with called terminal a series of
Interaction (as shown in Figure 5).Then, it is whole to main calling to return to the CONNECT orders of an ITU-T H.225.0 for server 130
End 111, wherein the field h245Address in this CONNECT order are the main calling terminal obtained in step S206
The IP addresses of 111 optimal network circuit.In some change case, field h245Address is obtained in step S202
The IP address of the optimal network circuit of main calling terminal 111.
Step S306, main calling terminal 111 is according to the IP address of field h245Address in the CONNECT of reception, wound
Build the TCP of an ITU-T H.245 and be connected to server 130.
Step S307, main calling terminal 111 follow standard H.323 flow, sent to server 130
The communication protocols such as GenericIndication/terminalCapabilitySet, to complete follow-up interaction.
Fig. 5 shows the timing diagram of called terminal according to embodiments of the present invention and server interaction.Reference picture 5, it is false
Determine called terminal 112 and be located at Intranet, and support H.460.x related consensus standard.H.460 server 130 supports ITU-T
Serial protocols standard.And main calling terminal can be an ITU-T for not supporting H.460.18 agreement H.323 standard terminals.
Called terminal 112 interacts with server 130 across route 122.When a calling is arrived, its specific workflow is such as
Under：
Step S401, called terminal 112 are registered in server 130, and server 130 receives the calling of main calling terminal
Afterwards, the information of called terminal 112 is therefrom parsed.Called terminal 112 is drawn most according to the registration of called terminal 112
Excellent network line.
Step S402, server 130 send ITU-T RAS SCI (Service Control Indication) information
To called terminal 112, wherein SCI (Service Control Indication, Service controll configured information) field
GenericData can include IncomingCallIndication (incoming call instruction), in field callSignalAddress
Insert the optimal network circuit of called terminal 112.
Step S403, after called terminal 112 receives ITU-T RAS SCI, reply an ITU-T RAS SCR
(Service Control Response, Service controll response message) gives server 130.
Step S404, called terminal 112 according to ITU-T H.460.18 middle regulations, start one it is new H.225.0
TCP connections, connection destination location are IP address and end in the SCI fields callSignalAddress that server 130 is sent
Mouth (optimal network circuit)；
Step S405, called terminal 112 sends ITU-T, and H.225.0 FACILITY information to server 130, and is abided by
Standard H.460.18 is followed, its field callIdentifier is set to the ITU-T RAS SCI's that server 130 sends
Value in IncomingCallIndication, field reason are set to undefinedReason, and without field
conferenceId；
Step S406, server 130 receive this ITU-T H.225.0 after FACILITY information, pass through this new foundation
The connections of TCP H.225.0 original main calling terminal is directly dealt into the ITU-T of server 130 H.225.0 SETUP information
It is given to called terminal 112.Follow-up information will be interacted with the flow of standard H.323.
Fig. 6 shows that terminal request according to embodiments of the present invention opens the timing diagram of logical channel.Reference picture 6, work as institute
The information exchanges of some ITU-T H.225.0 finish, it then follows H.323 and H.460 related standard, will be subsequently ITU-T
H.245 related Signalling exchange, including Generic Indication, MSD (Master Slaver Determination),
TCS (Terminal Capability Set), OLC (Open Logical Channel) etc..Wherein with phase of the embodiment of the present invention
Predominantly related LC (Logical Channel) command interaction closed, and the LC involved by the embodiment of the present invention is established and work
Be also to be realized under existing ITU-T frameworks H.460.19 as flow, major improvement is that by OLC related LC and
IP address and the optimal network circuit of acquisition in OLC ACK information fields mediaControlChannel, mediaChannel
It is combined, so that follow-up media transmission can be carried out on predetermined optimal network circuit.Wherein, Fig. 6 is mainly said
Bright terminal 110 asks OLC flow to server 130, and terminal 110 interacts with server 130 across route 120.Specific steps are such as
Under：
Step S501, terminal 110 send OLC solicited messages to server 130, wherein OLC solicited messages field
IP address in mediaControlChannel is any IP address of terminal 110.
Step S502, server 130 reply OLC response messages to terminal 110, wherein institute's band in this OLC response message
MediaChannel and mediaControlChannel address information use the terminal obtained in step S206
The IP address of 110 optimal network circuit.In some change case, its be obtained in step S202 terminal 110 it is optimal
The IP address of network line.Source address is the IP address of the optimal network circuit, destination address for terminal 110 any IP
Location.
Step S503, terminal 110 sends audio-video frequency media (RTP), that is, videoconference data is to server 130.Source
Address is any IP address of terminal 110, and destination address is the IP address of optimal network circuit.
Step S504, terminal 110 send media control signaling (RTCP) and give server 130.Source address is appointed for terminal 110
Meaning IP address, destination address is the IP address of optimal network circuit.
Step S505, server 130 send media control signaling (RTCP) and give terminal 110, are sent along terminal 110
The network line (optimal network circuit) of media control signaling (RTCP) returns.Source address for the optimal network circuit IP
Location, destination address are any IP address of terminal 110.
Fig. 7 shows that the timing diagram of logical channel is opened in server request according to embodiments of the present invention.Reference picture 7, from
Server 130 asks OLC flow to terminal 110.Similar with Fig. 6, server 130 asks OLC stream to terminal 110 in Fig. 7
Journey, and the combination of the OLC correlation steps by optimal network circuit involved in the present invention and ITU-T H.245.It is specific as follows：
Step S601, according to agreement H.460.19, when server 130 is to the transmission OLC solicited messages of terminal 110, it can exist
The address information comprising mediaControlChannel and keepAliveChannel is used in step in OLC solicited messages
The IP address of the optimal network circuit of the terminal 110 obtained in rapid S206.In some change case, it is to be obtained in step S202
The IP address of the optimal network circuit of the terminal 110 obtained.
Step S602, terminal 110 reply OLC response messages to server 130, and wherein carry mediaChannel and
mediaControlChannel。
Step S603, terminal 110 send KeepAlive keep-alives bag (empty RTP bags) and arrive server 130, and source address is eventually
End 110 is used to receiving the arbitrary address of audio-video frequency media data, destination address for step S601 keepAliveChannel institutes
The address (IP address of optimal network circuit) of carrying.
Step S604, server 130 sends audio-video frequency media (RTP), that is, videoconference data is to terminal 110, source
Address is the address (IP address of optimal network circuit) entrained by step S601 keepAliveChannel, and destination address is
The source address of KeepAlive keep-alive bags received on server 130, step S603.
Step S605, terminal 110 send media control signaling (RTCP) and give server 130, and source address is that terminal 110 is used for
The arbitrary address of transmission media control signaling, destination address are entrained by the mediaControlChannel in step S601
Address.
Step S606, server 130 send media control signaling (RTCP) and give terminal 110, adopt step S505 transmission
Path.Source address is the address entrained by the mediaControlChannel in step S601, and destination address is in step S605
Terminal 110 is used for the address of transmission media control signaling.
The above embodiment of the present invention aim to provide it is a kind of under the framework of existing communication protocol standard, especially H.323
Communication protocol, with reference to H.460 serial specification, gatekeeper is set to realize the optimization network transfer method that NAT is passed through, when two or more
Positioned at heterogeneous networks, mutually transmission the dissatisfactory network environment of data under terminal (MT or MCU) to lead to meeting when
Wait so that the signaling and code stream of whole video conference can go on a most fast path, accelerate the negotiation and communication of video, fill
Divide the advantage excavated and using multi-thread road network, and the responsible balanced function of Multi net voting circuit can be had concurrently.Meanwhile above-mentioned implementation
Example realizes that this function simply on the basis of existing communication agreement (especially H.323 and H.460), adds in some signalings
The data content (while adds additional independent, for network condition detection working mechanism) related to NAT, you can real
It is existing, in the case of the standard of the holding H.323 functional steps of communication protocol, flow, the insertion of such working mechanism is included
H.460.x in the H.323 communication protocol including series standard.Above-described embodiment is intended to not influence H.323 communication protocol standard
On the premise of general frame and flow, the communication signaling related by increasing some NAT newly, to be dynamically determined between terminal and server
Optimal network circuit, overall video conference terminal and system is communicated and is led on optimal network line
Words, and optimization network transmission is finally reached, and lift the purpose of meeting quality.
It should be noted that though above-described embodiment illustrates the present invention with H.323 communication protocol with reference to H.460 series of canonical
Design, but the scope of the present invention is not limited to this.
The illustrative embodiments of the present invention are particularly shown and described above.It should be understood that the invention is not restricted to institute
Disclosed embodiment, on the contrary, it is intended to cover comprising various modifications within the scope of the appended claims and equivalent put
Change.
Claims (17)
1. one kind transmission videoconference data method, it is characterised in that including：
S1. terminal to server sends the first registration information, and first registration information includes the IP of the terminal
Address, the server have a plurality of network access line；
S2. the server receives first registration information, and the IP address according to the terminal and the server
A plurality of network access line decision-making described in the first optimal network circuit between terminal and the server, returned to the terminal
Multiple first registration approval in-formation, the first registration approval in-formation include：The IP of a plurality of network access line of the server
Address and the first optimal network circuit；
S3. the terminal receives the first registration approval in-formation, and passes through each IP address of a plurality of network access line
Network monitor bag is sent to the server；
S4. the terminal sends the second registration information to the server, and second registration information is used for keep-alive
Registration of the terminal on the server；
S5. the server receives the network monitor bag and second registration information, and according to the described second registration
Solicited message and the network monitor bag optimize the first optimal network circuit and obtain the second optimal network circuit, to described
Terminal replies second register approval in-formation, and the second registration approval in-formation includes the second optimal network circuit；And
S6. the terminal receives the second registration approval in-formation, and the second optimal network circuit is used in video conference
With the server interaction and transmitting the videoconference data.
2. transmission videoconference data method as claimed in claim 1, it is characterised in that the step S6 includes：
The server is connected by the second optimal network circuit with the terminal, and by the terminal originated calls or is connect
Receive calling；And
The server by the second optimal network circuit to the terminal send the videoconference data or receive by
The videoconference data that the terminal is sent.
3. the method as described in claim 1, it is characterised in that the step S3 includes：
The terminal persistently sends the network to the server by each IP address of a plurality of network access line and supervised
Bag is surveyed with lasting the second optimal network circuit for obtaining optimization.
4. transmission videoconference data method as claimed in claim 1, it is characterised in that the step S4 includes：
The terminal persistently sends second registration information to the server,
Wherein, the server is excellent in real time according to each second registration information and each network monitor bag
Change the first optimal network circuit and obtain the second optimal network circuit.
5. transmission videoconference data method as claimed in claim 1, it is characterised in that also include after the step S3：If
The terminal is before the second optimal network circuit is obtained, and into video conference, then the terminal uses in video conference
The first optimal network circuit and the server interaction simultaneously transmit the videoconference data.
6. the transmission videoconference data method as described in any one of claim 1 to 5, it is characterised in that the terminal and institute
State server to support and follow ITU-T H.323 agreements, and possess the support of H.460 serial protocols.
A kind of 7. video conferencing system, it is characterised in that including：Main calling terminal, called terminal and server, the master exhale
Terminal and the called terminal is made to be under across a network environment, the video conferencing system is using any one of claim 1 to 6
Described transmission videoconference data method.
8. video conferencing system as claimed in claim 7, it is characterised in that the main calling terminal and the called terminal
Under across a network environment, the main calling terminal is in first network, and the called terminal is in the second network.
A kind of 9. transmission videoconference data method in end, it is characterised in that including：
A. the first registration information being sent to server, first registration information includes the IP address of the terminal,
The server has a plurality of network access line；
B. the first registration approval in-formation that the server is replied is received, the first registration approval in-formation includes：The service
The first optimal network circuit between the IP address and the terminal and the server of a plurality of network access line of device；
C. network monitor bag, the network prison are sent to the server by each IP address of a plurality of network access line
Survey the network condition that bag is used to detect each IP address of a plurality of network access line；
D. the second registration information is sent to the server, second registration information exists for terminal described in keep-alive
Registration on the server；
E. the second registration approval in-formation that the server is replied is received, the second registration approval in-formation includes the second optimal net
Winding thread road, the first optimal network circuit described in the second optimal network line optimization；And
F. by the second optimal network circuit and the server interaction and the video conference is transmitted in video conference
Data.
10. transmission videoconference data method as claimed in claim 9, it is characterised in that the step F includes：
F1. it is connected by the second optimal network circuit with the server, and initiates to call or receive calling；And
F2. the videoconference data is sent to the server by the second optimal network circuit or received by the clothes
The videoconference data that business device is sent.
11. transmission videoconference data method as claimed in claim 9, it is characterised in that the step C includes：
The network monitor bag is persistently sent to hold to the server by each IP address of a plurality of network access line
Continuous the second optimal network circuit for obtaining optimization.
12. transmission videoconference data method as claimed in claim 11, it is characterised in that the step D includes：
Second registration information is persistently sent to the server,
Wherein, to every second registration information, the terminal receives the corresponding second registration approval in-formation, and described the
Two the second optimal network circuits for including of registration approval in-formations are according to each second registration information and every
First optimal network circuit described in the individual network monitor bag real-time optimization and obtain.
13. transmission videoconference data method as claimed in claim 9, it is characterised in that also include after the step B：If
The terminal is before the second optimal network circuit is obtained, and into video conference, then the terminal uses in video conference
The first optimal network circuit and the server interaction simultaneously transmit the videoconference data.
A kind of 14. transmission videoconference data method at server, it is characterised in that including：
A. the first registration information sent by terminal is received, first registration information is with including the IP of the terminal
Location, the server have a plurality of network access line；
B. terminal and the clothes according to a plurality of network access line decision-making of the IP address of the terminal and the server
The first optimal network circuit between business device, and register approval in-formation, the first registration approval to the terminal replies first
Information includes：The IP address of a plurality of network access line of the server and the first optimal network circuit；
C. the network monitor bag sent by the terminal from each IP address of a plurality of network access line, the network are received
Monitoring bag is used for the network condition for detecting each IP address of a plurality of network access line；
D. the second registration information sent by the terminal is received, second registration information is used for described in keep-alive eventually
Hold the registration on the server；
E. optimize the first optimal network circuit according to second registration information and the network monitor bag to obtain
Second optimal network circuit, approval in-formation is registered to the terminal replies second, the second registration approval in-formation includes described
Second optimal network circuit；And
F. the second optimal network circuit and the terminal interaction are used in video conference and transmits the video conference number
According to.
15. transmission videoconference data method as claimed in claim 14, it is characterised in that the step f includes：
F1. it is connected by the second optimal network circuit with the terminal, and by the terminal originated calls or receives calling；
And
F2. the videoconference data is sent to the terminal by the second optimal network circuit or received by the terminal
The videoconference data sent.
16. transmission videoconference data method as claimed in claim 14, it is characterised in that the step c includes：
Receive the network monitor bag persistently sent from each IP address of a plurality of network access line by the terminal.
17. transmission videoconference data method as claimed in claim 16, it is characterised in that the step d includes：
Second registration information persistently sent by the terminal is received,
Wherein, the server is excellent in real time according to each second registration information, and each network monitor bag
Change the first optimal network circuit and obtain the second optimal network circuit.
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| CN107172378B (en) * | 2017-04-19 | 2019-10-01 | 苏州科达科技股份有限公司 | Multimedia conference system, gatekeeper's server and method for configuring route |
| CN108881798B (en) * | 2017-12-29 | 2019-05-17 | 视联动力信息技术股份有限公司 | It is a kind of to be carried out using bridge service device across view networking conference method and system |
| CN110113553B (en) * | 2018-02-01 | 2020-11-27 | 视联动力信息技术股份有限公司 | Method and device for processing video telephone |
| CN108471363B (en) * | 2018-06-05 | 2021-05-28 | 深圳市捷视飞通科技股份有限公司 | Conference system registration method and device capable of supporting multiple communication protocols |
| CN108924467A (en) * | 2018-07-06 | 2018-11-30 | 四川长虹电器股份有限公司 | A kind of video conferencing system optimization method |
| CN109743526A (en) * | 2018-12-13 | 2019-05-10 | 视联动力信息技术股份有限公司 | A kind of communication connection method for building up and system based on view networking |
| CN112714274B (en) * | 2020-12-29 | 2023-02-21 | 苏州科达科技股份有限公司 | Video conference method and video conference resource management method |
| CN113014855B (en) * | 2021-02-09 | 2023-08-18 | 网宿科技股份有限公司 | Video conference acceleration method, system and video conference acceleration platform |
| CN114285776B (en) * | 2022-01-14 | 2023-07-14 | 广州广哈通信股份有限公司 | Network line state monitoring method and device and video conference terminal |
| CN115914540B (en) * | 2022-10-12 | 2023-09-29 | 山东美承数码科技有限公司 | Cloud video conference system |
| CN117354455B (en) * | 2023-12-04 | 2024-03-01 | 国网吉林省电力有限公司信息通信公司 | Communication method of distributed video conference system |
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| CN101207474B (en) * | 2006-12-18 | 2010-07-14 | 中兴通讯股份有限公司 | System for multicast implementation of switch-in layer network in IPTV system |
| TW200924439A (en) * | 2007-11-23 | 2009-06-01 | D Link Corp | Portable ICE relay server and its method thereof |
| CN102932235B (en) * | 2012-10-09 | 2017-11-21 | 曙光信息产业(北京)有限公司 | Instant communicating method and server system under cloud computing environment |
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