CN102255884A - Multilink multi-channel transmission method and system for real-time audio and video signals of unreliable network - Google Patents
Multilink multi-channel transmission method and system for real-time audio and video signals of unreliable network Download PDFInfo
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- CN102255884A CN102255884A CN2011100808077A CN201110080807A CN102255884A CN 102255884 A CN102255884 A CN 102255884A CN 2011100808077 A CN2011100808077 A CN 2011100808077A CN 201110080807 A CN201110080807 A CN 201110080807A CN 102255884 A CN102255884 A CN 102255884A
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Abstract
The invention discloses a multilink multi-channel transmission method and a multilink multi-channel transmission system for real-time audio and video signals of an unreliable network. The method comprises that: an acquisition terminal performs processing such as encoding, encapsulation and the like on the audio and video signals acquired in real time, and transmits an audio and video data packet in a multilink multi-channel binding transmission way. Therefore, transmission bandwidth is effectively expanded, and the signal quality and transmission reliability of the audio and video signals in a transmission process are improved.
Description
Technical field
The present invention relates to the audio frequency and video communication technical field, particularly be directed to the multilink of the real-time audio and video signal of unreliable network, the method and system of multichannel transmission.
Background technology
Along with the development of present the Internet and medium, the user more and more wishes to watch the programme content at real-time scene quickly and easily.At present common real-time video is live, and transmission is normally adopted the specific satellite transmission line that the real time video signals at scene is transferred to given server to carry out net cast.This mode at first needs between video presence and the server to make up the satellite transmits special line of a special use, runs into accident, and it is live that direct broadcasting satellite also needs special-purpose mobile control room to reach the spot to carry out; If should the scene because place and environment limited, cause mobile control room can not arrive in the scope of line-of-sight transmission, can not satisfy the environmental structure of on-the-spot broadcasting equipment, can not gather stability, the ageing decisive influence that plays that these problems all will be play on-site signal effectively to real-time live video.
In addition, above-mentioned real-time direct-seeding be owing to need rent the satellite transmits special line of a special use in advance, the support of equipment and instruments such as a large amount of real-time collections, transmission, and this has also increased the cost of investment of net cast undoubtedly for content service operator.
Summary of the invention
In view of this, the invention provides a kind of multilink of the real-time audio and video signal of unreliable network, method and system of multichannel transmission of being directed to.
After the audio-video signal that this method invention is gathered in real time to terminal equipment is encoded, package etc. handled, adopt the mode of multilink channel transfer that the audio-video signal bag is transmitted, plurality of network interface that provides by acquisition terminal and various network access module based on the IP agreement carry out the mode that multichannel inserts and set up transmission link, these network interfaces both can be various 3G or 4G mobile network, also cable network or WiFi, WiMAX network.
This kind mode is passed through channel bonding, expansion uplink bandwidth makes audio-video signal stable more, quick from transmitting terminal to receiving terminal, and has improved the signal quality of audio-video signal in transmission course, allow the user more stable, smooth environment is enjoyed net cast down.Concerning the content service provider, carry out net cast and need not to rent special-purpose satellite link simultaneously, the transmission real-time message is not subjected to the restriction in time, place, only needs just can obtain professional other net cast signal with cheap cost.
This method and system only need pass through a portable acquisition terminal, under the environment of arbitrary network coverage, can realize any time the collection of the signal source in any place, transmission work.By portable acquisition terminal, provide the video frequency program of not timing to gather and edit at situations such as the site activity that takes place at any time, accidents in real time, no longer need a large amount of expensive, the large-scale live equipment and the support of instrument as the net cast of traditional type, also the various device at the burst of consideration accident again scene, instrument building, putting and work such as allotment.Accomplish to increase work efficiency, satisfy the live demand of multiple business very neatly, make net cast no longer be subjected to place, environmental limit simultaneously, operate also more flexible with seeing with sending out.
This method depends on the acquisition terminal equipment of certain computing capability, this equipment encodes the audio-video signal bag process that collects, generate a plurality of indicate uniquely tagged, big or small identical or different packets according to the specified packet rule, acquisition terminal is by detecting the transmission link that current system can use, with being loaded in the multilink and the real-time server that transfers to of a plurality of packet equilibriums.
Packet is in the transmission course of multilink passage, the transmission speed and the effective bandwidth of each network access module of acquisition terminal meeting detection of dynamic, the distribution and the transmission of packet in the real-time then automatic adjustment corresponding network access module formation, avoid packet in transmission course congested, network problem such as lose, guarantee fluency and the attainability of packet in transmission course.
The multichannel data bag of server by receiving unpacks reorganization, processing such as reconfigures according to the protocol rule that unpacks of server end and acquisition terminal coupling, recovers and exports live video stream to other equipment according to demand.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part.
Fig. 1 is that acquisition terminal is sent to server according to a plurality of packets of specified protocol rule generation among the present invention, and server unpacks the reorganization flow chart according to the same protocol rule.
Fig. 2 is the realization flow figure that transmits about the multilink signal among the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
Fig. 1 is that acquisition terminal is sent to server according to a plurality of packets of specified protocol rule generation among the present invention, and server unpacks the reorganization flow chart according to the same protocol rule.
As shown in Figure 1, may further comprise the steps:
Acquisition terminal at first carries out audio signal, collection of video signal, afterwards audio-video signal is encoded, is compressed processing, every frame data are generated the identical or different packet of a plurality of sizes according to the specified packet rule, and a plurality of packets are used to distinguish the built-up sequence of this frame or these bag data by unique special marking own privately owned, that dynamically generate.As generating five packets after the frame data process system handles, in each packet header, have a unique special marking and be used for identifying that this bag is subordinated to certain data flow and this wraps in the position of entire stream structure, be used for server end and receive, use when carrying out data recombination when resolving this packet.
Software systems in the terminal equipment detect the transmission link that current device can be used, bandwidth and priority level according to every data link, system is with a plurality of packets being dispensed in many available transmission links with equilibrium, packet in every transmission link is changed to state to be sent with the spread pattern of formation, and terminal system can send processing to packet by the transmission link that has connected.
Server receives the packet that the multilink passage sends, and each packet is unpacked reorganization according to the agreement identical with client.In the transmission course of packet, if the packet loss phenomenon takes place, server can be looked conditional request transmit legs such as current network conditions, environmental factor the packet loss that resends and do of packet is handled.Server unpacks accepted packet, after reorganization etc. handles, recover original audio/video flow and offer signal receiver.
Fig. 2 is the realization flow figure that transmits about the multilink signal among the present invention.
As shown in Figure 2, comprise following steps:
Acquisition terminal is with in a plurality of allocation of packets transmission link that extremely current terminal can be used, under the environment of arbitrary network coverage, the plurality of network interface that acquisition terminal can carry by itself is connected with the diverse network access module, this network access module is not limited to any network that can transmit data, various available data network such as 2G, 3G, 4G, WiFi, WiMAX, LAN for example, acquisition terminal system can be mixed simultaneously and used these networks.
Suppose that acquisition terminal is carrying out the net cast of one section on-the-spot accident, collecting device can be gathered, encode by the real-time audio, video data with the scene, and generates a plurality of packets that special marking is arranged.Have only the network interface of single channel to be connected with the 3G network access module as current terminal, a plurality of packets can transmit by this 3G network access module with the form of formation.If content service operator need expand transmission bandwidth, the raising video quality of this video content, only need simply on equipment, to increase corresponding network access module, just can enlarge network rapidly and upload bandwidth, if this zone has the WiFi network signal, also can insert this regional WiFi focus by the WiFi network interface that acquisition terminal is supported.Terminal system can be carried out the detection of validity to the link of current access automatically, after detecting successfully, terminal system can improve signal transfer bandwidth flow and video quality to the packet of this link distribution respective numbers with the transfer of data that reaches multichannel, parallel model according to the priority level of heterogeneous networks.Use at the same time under 3G and the WiFi network condition, the WiFi network is preferential Network Transmission passage.
In the process of data packet transmission, what the acquisition terminal meeting was real-time carries out the monitoring of flow, speed to current available transmission link, if certain road transmission link is owing to the obstruction of the network bandwidth or some cause specific cause interruption or the phenomenon such as stagnation of packet in transmission course, system can reassign to the good link channel of other status transmission with the packet that does not send in this link and transmit, and guarantees that audio-video signal transmits stably, in the smooth network environment.
Claims (5)
1. the method and system of the multilink based on the real-time audio and video signal of unreliable network, multichannel transmission is characterized in that described method comprises:
Terminal equipment is encoded, after package etc. handles, is adopted the parallel transmission mode of multilink, binding multiple channels that the audio-video signal bag is transmitted by the audio-video signal to real-time collection.
2. method according to claim 1 is characterized in that, plurality of network interface that acquisition terminal can provide by itself and various network access module based on the IP agreement carry out the mode that multichannel inserts and set up transmission link;
These network interfaces both can be various 3G or 4G mobile network, also cable network or WiFi, WiMAX network.
3. method according to claim 1, it is characterized in that, acquisition terminal encodes the audio-video signal bag process that collects, generate a plurality of indicate uniquely tagged, big or small identical or different packets according to the specified packet rule, acquisition terminal is by detecting the transmission link that current system can use, with being loaded in the multilink and the real-time server that transfers to of a plurality of packet equilibriums; The multichannel data bag of server by receiving unpacks reorganization, processing such as reconfigures according to the protocol rule that unpacks of server end and acquisition terminal coupling, recovers and exports live video stream to other equipment according to demand.
4. packet is in the transmission course of multilink passage, and the transmission speed and the effective bandwidth of each network access module of acquisition terminal meeting detection of dynamic are adjusted the distribution and the transmission of packet in the formation of corresponding network access module then in real time automatically.
5. method according to claim 2 is characterized in that, network access module be not limited to any 2G, 3G, 4G, WiFi network access module such as WiMAX, cable network and terminal interface insert ways of connecting.
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| CN2011100808077A CN102255884A (en) | 2011-04-01 | 2011-04-01 | Multilink multi-channel transmission method and system for real-time audio and video signals of unreliable network |
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| CN2011100808077A CN102255884A (en) | 2011-04-01 | 2011-04-01 | Multilink multi-channel transmission method and system for real-time audio and video signals of unreliable network |
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| CN102427589A (en) * | 2012-01-01 | 2012-04-25 | 洛阳普天通信科技有限公司 | Method and system for transmitting high traffic data by binding a plurality of wireless networks |
| CN102595657A (en) * | 2012-02-23 | 2012-07-18 | 深圳市高视数字技术有限公司 | Data transmitting/receiving devices and communication system based on 3G multi-card binding. |
| CN104427299A (en) * | 2013-08-23 | 2015-03-18 | 北京计算机技术及应用研究所 | Ultra high definition video camera composite communication system and method |
| CN104427302A (en) * | 2013-08-28 | 2015-03-18 | 北京计算机技术及应用研究所 | Multichannel transmission subsystem and transmission method of superhigh-definition video image |
| CN105391977A (en) * | 2015-11-09 | 2016-03-09 | 天津航天中为数据系统科技有限公司 | Data sending method and system |
| CN105450984A (en) * | 2015-11-09 | 2016-03-30 | 天津航天中为数据系统科技有限公司 | Data sending method and system |
| WO2018027703A1 (en) * | 2016-08-10 | 2018-02-15 | 张北江 | Dual network channel security monitoring implementation method and system |
| CN109618240A (en) * | 2018-10-26 | 2019-04-12 | 安徽清新互联信息科技有限公司 | Wireless Multi-Channel adaptive equilibrium method for real-time audio and video transmission |
| CN114389912A (en) * | 2022-01-24 | 2022-04-22 | 北京仁光科技有限公司 | Multi-channel command control system and command control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102427589A (en) * | 2012-01-01 | 2012-04-25 | 洛阳普天通信科技有限公司 | Method and system for transmitting high traffic data by binding a plurality of wireless networks |
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| CN102595657A (en) * | 2012-02-23 | 2012-07-18 | 深圳市高视数字技术有限公司 | Data transmitting/receiving devices and communication system based on 3G multi-card binding. |
| CN104427299A (en) * | 2013-08-23 | 2015-03-18 | 北京计算机技术及应用研究所 | Ultra high definition video camera composite communication system and method |
| CN104427302A (en) * | 2013-08-28 | 2015-03-18 | 北京计算机技术及应用研究所 | Multichannel transmission subsystem and transmission method of superhigh-definition video image |
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| WO2018027703A1 (en) * | 2016-08-10 | 2018-02-15 | 张北江 | Dual network channel security monitoring implementation method and system |
| CN109618240A (en) * | 2018-10-26 | 2019-04-12 | 安徽清新互联信息科技有限公司 | Wireless Multi-Channel adaptive equilibrium method for real-time audio and video transmission |
| CN114389912A (en) * | 2022-01-24 | 2022-04-22 | 北京仁光科技有限公司 | Multi-channel command control system and command control method |
| CN114389912B (en) * | 2022-01-24 | 2022-08-05 | 北京仁光科技有限公司 | Multi-channel command control system and command control method |
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Application publication date: 20111123 |