CN105472477A - Data transmission method, device and equipment - Google Patents
Data transmission method, device and equipment Download PDFInfo
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- CN105472477A CN105472477A CN201510901092.5A CN201510901092A CN105472477A CN 105472477 A CN105472477 A CN 105472477A CN 201510901092 A CN201510901092 A CN 201510901092A CN 105472477 A CN105472477 A CN 105472477A
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- video data
- wireless communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—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
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6131—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a mobile phone network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
- H04N21/26208—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints
- H04N21/26216—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints involving the channel capacity, e.g. network bandwidth
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
- H04N21/2662—Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—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
- H04N21/647—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
- H04N21/64723—Monitoring of network processes or resources, e.g. monitoring of network load
- H04N21/64738—Monitoring network characteristics, e.g. bandwidth, congestion level
-
- 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
- H04N21/647—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
- H04N21/64784—Data processing by the network
- H04N21/64792—Controlling the complexity of the content stream, e.g. by dropping packets
Abstract
The embodiment of the invention discloses a data transmission method. The method comprises the following steps: acquiring collected audio-video data, and performing coding compression on the audio-video data; performing segmenting packetization on the audio-video data subjected to coding compression according to a preset segmenting packetization strategy; allocating data packets to communication links, respectively corresponding to a plurality of configured wireless communication modules, for transmission, wherein at least two communication links corresponding to thewireless communication modules adopt different mobile telecommunication networks for communication; and acquiring network bandwidth information of each communication link in real time, adjusting allocation of the data packets in real time and/or adjusting coding parameters for coding the audio-video data in real time to adjust the code rate of the audio-video data subjected to coding compression. Through adoption of the method, a problem of live broadcast lag phase or failure caused by the fact that the possibility of communication blind zones and poor signals is high when the mobile telecommunication networks are used for audio-video live broadcasting in the prior art is solved, and urgent needs of outdoor live broadcasting and mobile live broadcasting operations are met.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of data transmission method, device and equipment.
Background technology
Along with the development of electronics technology and the Internet, the network world (or virtual platform) create various based on simulated computer environment, with virtual personage's incarnation for carrier, user lives wherein, exchanging; In this dynamic a networked society living space, user can carry out learning, play, amusement, shopping etc.
Current, be lively online more and more subject to liking of user; Live referring to utilizes the Internet and stream media technology to carry out live online, and video enriches element, excellent both in sound and shape, excellent because having merged image, word, sound etc., becomes the main flow expression way of the Internet gradually.Main broadcaster's client (i.e. main broadcaster user) can set up online direct broadcasting room (being equivalent to online direct broadcast band) by the Internet on website, online broadcasting is carried out to the spectator client (i.e. spectators user) in this online direct broadcast band, spectators user can see the main broadcaster's content in current online direct broadcast band, such as watch video content etc., main broadcaster user can also carry out private chat with the multiple spectators users in current online direct broadcast band.
Main broadcaster's client is in live process, and the collection of audio frequency and video, compression, transmission, reduction, broadcasting are all synchronously carried out, and this process for audio frequency and video and transmission have very high requirement.In existing, conventional has following two kinds of audio frequency and video direct-seedings:
1, undertaken live by satellite or microwave.This direct-seeding of the live usual use of TV programme, the advantage of this direct-seeding is live wide coverage, does not substantially limit by region location.Shortcoming is that live cost is too high, needs to use special satellite or microwave live broadcast vehicle, uses very flexible, and needs more staff to coordinate.Meanwhile, this direct-seeding is by environment, and all many condition restrictions such as weather and landform, live video/audio quality is often affected.
2, undertaken live by the mode of the Internet.Online education, amusement is live all uses this direct-seeding with safety monitoring.This direct-seeding is easy to use, with low cost, but shortcoming is also clearly, can only have the Internet broadband interface and wifi access place use, the scope of application is restricted, be not suitable for out of doors with moving process in carry out live.
Along with the develop rapidly of mobile radio communication, the bandwidth of mobile communication transmission is more and more higher, such as adopt the communication terminal of the mobile communications network of 4G can realize the data uplink speed of a few mbps, this makes to be undertaken by mobile radio communication, and audio frequency and video are live becomes possibility, namely solve the problem of satellite or microwave direct-seeding very flexible, have and solve the limited problem of the Internet direct-seeding scope of application.Although but mobile communication wide coverage, but unavoidably still there will be some communication blind districts and the not so good place of signal, the ageing of transfer of data can not be ensured, carry out lively causing not little impact out of doors with in moving process to user, outdoor live and mobile live active demand can not be met.
Summary of the invention
Embodiment of the present invention technical problem to be solved is, a kind of data transmission method, data transmission device and data transmission set are provided, solve in prior art by mobile communications network carry out audio frequency and video live time, easily occur communication blind district and signal not so good and cause live card to pause or the problem of failure, and meeting active demand that is outdoor live and mobile live broadcast service.
First aspect, embodiments provides a kind of data transmission method, comprising:
Obtain the audio, video data gathered, compression coding is carried out to described audio, video data;
According to the segmentation Group Package Policy preset, segmentation group bag is carried out to the audio, video data after compression coding, obtain the packet of preset format;
The communication link corresponding respectively according to multiple wireless communication modules of configuration, transmits described allocation of packets in described communication link; Wherein, the communication link that at least two wireless communication modules are corresponding adopts different mobile communications networks to communicate;
The network bandwidth information of the every communication link of Real-time Obtaining, the distribution of described packet is adjusted in real time according to described network bandwidth information, and/or adjust the coding parameter that described audio, video data is encoded in real time according to described network bandwidth information, to adjust the code check of the audio, video data after compression coding.
In conjunction with first aspect, in the implementation that the first is possible, the described communication link corresponding respectively according to multiple wireless communication modules of configuration, comprises carrying out transmission in described allocation of packets to described communication link:
Whether the transmission buffering area scanning each wireless communication module successively corresponding sends time-out;
When scanning the transmission buffering area sending time-out, whether detection exists transmission sends buffering area normally;
When the test results is yes, the allocation of packets sending time-out is sent in buffering area normally to described transmission send; When testing result is no, then abandon the described packet sending time-out.
In conjunction with first aspect, in the implementation that the second is possible, the described distribution adjusting described packet according to described network bandwidth information in real time, comprises following at least one item:
When the network transmission rate of the first communication link is lower than the first predetermined threshold value, reduce the packet being assigned to described first communication link; Or
When the success rate by second communication link transmission data bag is lower than the second predetermined threshold value, reduce the packet being assigned to described second communication link.
In conjunction with first aspect, in the implementation that the third is possible, describedly adjust the coding parameter that described audio, video data is encoded in real time according to described network bandwidth information, comprise following at least one item:
When the total bandwidth of communication link of adding up is less than the code check of the audio, video data after present encoding compression, reduced the code check of the audio, video data after compression coding by adjustment coding parameter; Or
The code check of the audio, video data after the total bandwidth of communication link of statistics is greater than present encoding compression, and the code check of audio, video data after the compression of described present encoding is when being less than default maximum, increased the code check of the audio, video data after compression coding by adjustment coding parameter.
In conjunction with first aspect, or the first possible implementation of first aspect, or the implementation that the second of first aspect is possible, or the third possible implementation of first aspect, in the 4th kind of possible implementation, the described communication link corresponding respectively according to multiple wireless communication modules of configuration, after transmitting in described allocation of packets to described communication link, also comprises:
The rate flow information that each wireless communication module of Real-time Obtaining is corresponding;
According to described rate flow information, preferentially by allocation of packets to communication link corresponding to the low wireless communication module of rate, or stop allocation of packets being greater than communication link corresponding to the wireless communication module of the 3rd predetermined threshold value to flow use.
Second aspect, embodiments provides a kind of data transmission device, comprising:
Acquisition module, for obtaining the audio, video data of collection;
Compression coding module, for carrying out compression coding to described audio, video data;
Segmentation group bag module, for carrying out segmentation group bag according to the segmentation Group Package Policy preset to the audio, video data after compression coding, obtains the packet of preset format;
First distribution module, for the communication link that the multiple wireless communication modules according to configuration are corresponding respectively, transmits described allocation of packets in described communication link; Wherein, the communication link that at least two wireless communication modules are corresponding adopts different mobile communications networks to communicate;
Adjusting module, for the network bandwidth information of the every communication link of Real-time Obtaining, the distribution of described packet is adjusted in real time according to described network bandwidth information, and/or adjust the coding parameter that described audio, video data is encoded in real time according to described network bandwidth information, to adjust the code check of the audio, video data after compression coding.
In conjunction with second aspect, in the implementation that the first is possible, described first distribution module comprises:
Whether scanning element, send time-out for the transmission buffering area scanning each wireless communication module successively corresponding;
Detecting unit, during for scanning the transmission buffering area sending time-out when described scanning element, whether detection exists transmission sends buffering area normally;
Check processing unit, for when the testing result of described detecting unit is for being, sends the allocation of packets of transmission time-out in buffering area normally to described transmission and sending; When the testing result of described detecting unit is no, then abandon the described packet sending time-out.
In conjunction with second aspect, in the implementation that the second is possible, described adjusting module comprises following at least one item:
First reduces unit, for when the network transmission rate of the first communication link is lower than the first predetermined threshold value, reduces the packet being assigned to described first communication link; Or
Second reduces unit, for when the success rate by second communication link transmission data bag is lower than the second predetermined threshold value, reduces the packet being assigned to described second communication link; Or
Reduce unit, when the total bandwidth for the communication link when statistics is less than the code check of the audio, video data after present encoding compression, reduced the code check of the audio, video data after compression coding by adjustment coding parameter; Or
Increase unit, total bandwidth for the communication link when statistics is greater than the code check of the audio, video data after present encoding compression, and the code check of audio, video data after the compression of described present encoding is when being less than default maximum, increased the code check of the audio, video data after compression coding by adjustment coding parameter.
In conjunction with second aspect, or the first possible implementation of second aspect, or the implementation that the second of second aspect is possible, in the implementation that the third is possible, described acquisition module is also for distinguishing corresponding communication link in described first distribution module according to multiple wireless communication modules of configuration, after transmitting in described allocation of packets to described communication link, the rate flow information that each wireless communication module of Real-time Obtaining is corresponding;
Described data transmission device also comprises: the second distribution module, for according to described rate flow information, preferentially by allocation of packets to communication link corresponding to the low wireless communication module of rate, or stop allocation of packets being greater than communication link corresponding to the wireless communication module of the 3rd predetermined threshold value to flow use.
The third aspect, embodiments provides a kind of data transmission set, comprises audio frequency and video capture module, processor and multiple wireless communication module, wherein
Described audio frequency and video capture module gathers audio, video data by HDMI or SDI interface, and described audio, video data is inputed to described processor; Described processor comprises above-mentioned second aspect, or the first possible implementation of second aspect, or the implementation that the second of second aspect is possible, or the third possible implementation of second aspect, or the data transmission device in the 4th of second aspect the kind of possible implementation;
Described multiple wireless communication module is corresponding multiple communication link respectively, and wherein, the communication link that at least two wireless communication modules are corresponding adopts different mobile communications networks to communicate;
Described processor is connected with described multiple wireless communication module respectively, allocation of packets is transmitted in described communication link.
Alternatively, this data transmission set can also comprise at least one storage battery, and this storage battery is hot-swappable, works for this data transmission set.
In conjunction with the third aspect, in the implementation that the first is possible, the communication link that described processor is corresponding respectively according to multiple wireless communication modules of configuration, comprises carrying out transmission in described allocation of packets to described communication link:
Whether the transmission buffering area scanning each wireless communication module successively corresponding sends time-out;
When scanning the transmission buffering area sending time-out, whether detection exists transmission sends buffering area normally;
When the test results is yes, the allocation of packets sending time-out is sent in buffering area normally to described transmission send; When testing result is no, then abandon the described packet sending time-out.
In conjunction with the third aspect, in the implementation that the second is possible, described processor adjusts the distribution of described packet in real time according to described network bandwidth information, comprises following at least one item:
When the network transmission rate of the first communication link is lower than the first predetermined threshold value, reduce the packet being assigned to described first communication link; Or
When the success rate by second communication link transmission data bag is lower than the second predetermined threshold value, reduce the packet being assigned to described second communication link.
In conjunction with the third aspect, in the implementation that the third is possible, described processor adjusts the coding parameter of encoding to described audio, video data in real time according to described network bandwidth information, comprises following at least one item:
When the total bandwidth of communication link of adding up is less than the code check of the audio, video data after present encoding compression, reduced the code check of the audio, video data after compression coding by adjustment coding parameter; Or
The code check of the audio, video data after the total bandwidth of communication link of statistics is greater than present encoding compression, and the code check of audio, video data after the compression of described present encoding is when being less than default maximum, increased the code check of the audio, video data after compression coding by adjustment coding parameter.
In conjunction with the third aspect, or the first possible implementation of the third aspect, or the implementation that the second of the third aspect is possible, or the third possible implementation of the third aspect, in the 4th kind of possible implementation, the communication link that described processor is corresponding respectively according to multiple wireless communication modules of configuration, after transmitting in described allocation of packets to described communication link, also comprises:
The rate flow information that each wireless communication module of Real-time Obtaining is corresponding;
According to described rate flow information, preferentially by allocation of packets to communication link corresponding to the low wireless communication module of rate, or stop allocation of packets being greater than communication link corresponding to the wireless communication module of the 3rd predetermined threshold value to flow use.
By implementing the embodiment of the present invention, to gather and audio, video data after having carried out compression coding carries out segmentation group bag according to the segmentation Group Package Policy preset, after obtaining the packet of preset format, the communication link corresponding respectively according to multiple wireless communication modules of configuration, transmit in allocation of packets to communication link, wherein, the communication link that at least two wireless communication modules are corresponding adopts different mobile communications networks to communicate, thus solve in prior art by mobile communications network carry out audio frequency and video live time, easily occur communication blind district and signal not so good and cause live card to pause or the problem of failure, reduce the threshold of outdoor moving main broadcaster, in addition, can in real time according to the distribution of network bandwidth information real-time aligned data bag, and/or the coding parameter that audio, video data is encoded is adjusted in real time according to network bandwidth information, further increase the ageing of transfer of data, ensure that live user can realize stable with cheap cost and outdoor moving is live clearly, avoid the problem that satellite or microwave direct-seeding very flexible and the Internet direct-seeding scope of application are limited, meet active demand that is outdoor live and mobile live broadcast service.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the system architecture schematic diagram of the data transmission method that the embodiment of the present invention provides;
Fig. 2 is the schematic flow sheet of the data transmission method that the embodiment of the present invention provides;
Fig. 3 is the schematic flow sheet of another embodiment of data transmission method provided by the invention;
Fig. 4 is the structural representation of the data transmission device that the embodiment of the present invention provides;
Fig. 5 is the structural representation of the first distribution module that the embodiment of the present invention provides;
Fig. 6 is the structural representation of the adjusting module that the embodiment of the present invention provides;
Fig. 7 is the structural representation of another embodiment of data transmission device provided by the invention;
Fig. 8 is the structural representation of the data transmission set that the embodiment of the present invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
It should be noted that, the term used in embodiments of the present invention is only for the object describing specific embodiment, and not intended to be limiting the present invention." one ", " described " and " being somebody's turn to do " of the singulative used in the embodiment of the present invention and appended claims is also intended to comprise most form, unless context clearly represents other implications.It is also understood that term "and/or" used herein refer to and comprise one or more project of listing be associated any or all may combine.
See the configuration diagram of the data transmission system that the embodiment of the present invention shown in Fig. 1 provides, user can pass through handheld digital video (DigitalVideo, or the recording audio/video at the scene such as professional camera DV), then the audio video transmission of recording will be gathered on data transmission device or equipment, the data transmission method that this data transmission device or equipment are provided by the embodiment of the present invention, audio, video data is transferred to the server of network terminal, is finally handed down to each spectator client by server.
Also it should be noted that, client in each embodiment of the present invention, specifically can refer to the subscriber equipment of this communication system platform that run user logs in, namely this subscriber equipment (i.e. client) runs this communication system platform having user to log in, in the network architecture as shown in Figure 1, client can include but not limited on the subscriber equipmenies such as mobile phone, removable computer, panel computer, personal digital assistant (PersonalDigitalAssistant, PDA), media player, intelligent television, intelligent watch, intelligent glasses, Intelligent bracelet.
Below in conjunction with the schematic flow sheet of the data transmission method that the embodiment of the present invention shown in Fig. 2 provides, comprising:
Step S200: obtain the audio, video data gathered, compression coding is carried out to described audio, video data;
Particularly, main broadcaster user is recorded at the scene by video camera or hand-hold type DV etc. or is gathered audio frequency and video, data transmission device can obtain the audio, video data of this video camera or hand-hold type DV collection, this data transmission device and this video camera or hand-hold type DV can pass through HDMI (High Definition Multimedia Interface) (HighDefinitionMultimediaInterface, HDMI) or the interface such as digital component serial line interface (SerialDigitalInterface, SDI) carry out transmission tone video data; After this data transmission device gets the audio, video data of collection, by the coding parameter of the encoder preset, this audio, video data is encoded, and complete compression, such as, video data compression can be become H264 form, Audio data compression be become ACC form etc.
Step S202: according to the segmentation Group Package Policy preset, segmentation group bag is carried out to the audio, video data after compression coding, obtain the packet of preset format;
Particularly, the segmentation Group Package Policy preset in the embodiment of the present invention can for presetting fixing segmentation Group Package Policy, such as by the demand according to Internet Transmission, unified fixing segmentation group is bundled into the packet of User Datagram Protoco (UDP) (UserDatagramProtocol, UDP) form; The invention is not restricted to the packet of fixing segmentation composition UDP form, other can also be applicable to the formatted data bag of Internet Transmission.
Step S204: the communication link corresponding respectively according to multiple wireless communication modules of configuration, transmits described allocation of packets in described communication link;
Particularly, each wireless communication module correspondence establishment (wireless) communication link, in multiple wireless communication modules that the embodiment of the present invention configures at this end device (namely above-mentioned data transmission device), the communication link that at least two wireless communication modules are corresponding adopts different mobile communications networks to communicate, that is, at least two wireless communication modules connect different carrier networks, this different carrier network comprises China Mobile, China Telecom or CHINAUNICOM etc., and they adopt different mobile communications networks to communicate respectively; And, adopt the communication link of identical mobile communications network also can be configured with many.This allocation of packets can be transmitted by this data transmission device in above-mentioned communication link.
Step S206: the network bandwidth information of the every communication link of Real-time Obtaining, the distribution of described packet is adjusted in real time according to described network bandwidth information, and/or adjust the coding parameter that described audio, video data is encoded in real time according to described network bandwidth information, to adjust the code check of the audio, video data after compression coding.
Particularly, the network bandwidth information in the embodiment of the present invention includes but not limited to network transmission rate, the transmission success rate of packet, total bandwidth of communication link etc.; The distribution adjusting this packet according to this network bandwidth information in real time can comprise following any two or combination:
When the network transmission rate of the first communication link is lower than the first predetermined threshold value, reduce the packet being assigned to this first communication link; Or when the success rate by second communication link transmission data bag is lower than the second predetermined threshold value, reduce the packet being assigned to this second communication link.
In detail, this data transmission device can pre-set this first predetermined threshold value, if to show that the network transmission rate of certain communication link is lower than this first predetermined threshold value, then know that this communication link can not complete the transmission of this audio, video data by live demand; This data transmission device can the network transmission rate of communication link corresponding to all wireless communication modules of real-time statistics, when the network transmission rate of the first communication link is lower than this first predetermined threshold value, know that this first communication link can not complete the transmission of this audio, video data by live demand, so should reduce the packet being assigned to this first communication link.This data transmission device can pre-set this second predetermined threshold value equally, if to show that the success rate of certain communication link packet is lower than this second predetermined threshold value, namely there is frequent packet loss phenomenon, then know that this communication link can not complete the transmission of this audio, video data by live demand, this data transmission device can the success rate of communication link packet corresponding to all wireless communication modules of real-time statistics, such as receive server and return confirmation of receipt message for certain packet, then show this packet Successful transmissions, if do not receive server to return confirmation of receipt message for certain packet, then show that Successful transmissions is not had to this packet, when statistics finds the success rate of second communication link transmission data bag lower than the second predetermined threshold value, know that this second communication link can not complete the transmission of this audio, video data by live demand, so should reduce the packet being assigned to this second communication link.
It should be noted that, the value that this first predetermined threshold value or the second predetermined threshold value can be crossed for the empirical value of technical staff or practical proof, or can be the value of a dynamic conditioning, constantly adjust change along with the change of link bandwidth.
Again particularly, in step S206, adjust the coding parameter that described audio, video data is encoded in real time according to described network bandwidth information, following any two or combination can be comprised with the code check adjusting the audio, video data after compression coding:
When the total bandwidth of communication link of adding up is less than the code check of the audio, video data after present encoding compression, reduced the code check of the audio, video data after compression coding by adjustment coding parameter; Or the code check of the audio, video data after the total bandwidth of communication link of statistics is greater than present encoding compression, and the code check of audio, video data after this current compression coding is when being less than default maximum, increased the code check of the audio, video data after compression coding by adjustment coding parameter.
In detail, this data transmission device can the success rate of communication link packet corresponding to all wireless communication modules of real-time statistics, then knows that this communication link can not complete the transmission of this audio, video data by live demand when the code check of the audio, video data after the total bandwidth of the communication link added up is less than present encoding compression; When statistics finds the success rate of second communication link transmission data bag lower than the second predetermined threshold value, namely there is frequent packet loss phenomenon, description time communication bandwidth is less, know that this second communication link can not complete the transmission of this audio, video data by live demand, the code check of the audio, video data after compression coding so can be reduced by adjustment coding parameter, with the transmission making this second communication link can meet the audio, video data of current live demand, reduce the live middle phenomenon occurring mosaic and Ka Dun.This data transmission device equally can the total bandwidth of real-time statistics communication link, the code check of the audio, video data after the total bandwidth of communication link of statistics is greater than present encoding compression, and the code check of audio, video data after this current compression coding is when being less than default maximum, show the code check that can also be increased the audio, video data after compression coding by adjustment coding parameter, to improve image quality and the definition of live video.
Again further, the schematic flow sheet of another embodiment of data transmission method provided by the invention as shown in Figure 3, comprising:
Step S300: initializing wireless communication module, sets up communication link, sends buffering area for each wireless communication module distributes;
Particularly, when user's turn-on data transmitting device prepares to carry out live audio frequency and video recording, the initial configuration of the wireless communication module on first carry out this device after the unlatching of this data transmission device, set up respective communication link, and distribute transmission buffering area according to default allocation rule, to cushion the message queue needing to send.
Step S302: whether monitoring gets audio, video data;
After monitoring and obtaining audio, video data, perform step S304, otherwise repeated execution of steps S302;
Step S304: setting coder parameters, carries out compression coding to audio, video data;
Step S306: the audio, video data after compression coding is carried out segmentation group bag, and by the transmission buffering area of Packet Generation to each wireless communication module;
Particularly, step S304 and step S306 with reference to the description of above-mentioned Fig. 2 embodiment, can repeat no more here.
Step S308: whether the transmission buffering area scanning each wireless communication module successively corresponding sends time-out;
Particularly, when scanning the transmission buffering area sending time-out, perform step S310, otherwise, perform step S316.
Step S310: whether detection exists transmission sends buffering area normally;
Particularly, when detecting that there is transmission sends buffering area normally, performing step S314, otherwise performing step S312.
Step S312: abandon the described packet sending time-out;
Particularly, after having abandoned the packet of current transmission time-out, step S316 has been performed.
Step S314: the allocation of packets of transmission time-out is sent in buffering area normally to described transmission and sends;
Step S316: determine whether that last sends buffering area;
Particularly, when being judged as that last sends buffering area, perform step S318, otherwise return execution step S308, until scanned last to send buffering area.
Step S318: judge live whether end;
Particularly, when judge live at the end of, perform step S322, otherwise perform step S320.
Step S320: the network bandwidth information adding up communication link corresponding to each wireless communication module;
Particularly, step S320 with reference to the description of above-mentioned Fig. 2 embodiment, can repeat no more here, and after step S320, returns and perform step S304.
Further, the embodiment of the present invention is at the communication link of the multiple wireless communication modules difference correspondences according to configuration, after transmitting in described allocation of packets to described communication link, namely in step S320, can also comprise: the rate flow information that each wireless communication module of Real-time Obtaining is corresponding; According to this rate flow information, preferentially by allocation of packets to communication link corresponding to the low wireless communication module of rate, or stop allocation of packets being greater than communication link corresponding to the wireless communication module of the 3rd predetermined threshold value to flow use.
Particularly, the rate flow information that as if statistics goes out certain wireless communication module corresponding shows, when the rate low (as unit discharge expense) of this wireless communication module are lower than other wireless communication module, can preferentially by this allocation of packets to communication link corresponding to the wireless communication module that these rate are low; Or user have purchased the monthly payment flow package of certain wireless communication module in advance, if the flow of this wireless communication module uses and has reached the 3rd predetermined threshold value, show that the current flow value employed is about to exceed monthly payment flow value, or exceed monthly payment flow value, so can stop this allocation of packets to communication link corresponding to this wireless communication module.
Step S322: process ends.
By implementing the embodiment of the present invention, to gather and audio, video data after having carried out compression coding carries out segmentation group bag according to the segmentation Group Package Policy preset, after obtaining the packet of preset format, the communication link corresponding respectively according to multiple wireless communication modules of configuration, transmit in allocation of packets to communication link, wherein, the communication link that at least two wireless communication modules are corresponding adopts different mobile communications networks to communicate, thus solve in prior art by mobile communications network carry out audio frequency and video live time, easily occur communication blind district and signal not so good and cause live card to pause or the problem of failure, reduce the threshold of outdoor moving main broadcaster, in addition, can in real time according to the distribution of network bandwidth information real-time aligned data bag, and/or the coding parameter that audio, video data is encoded is adjusted in real time according to network bandwidth information, further increase the ageing of transfer of data, ensure that live user can realize stable with cheap cost and outdoor moving is live clearly, avoid the problem that satellite or microwave direct-seeding very flexible and the Internet direct-seeding scope of application are limited, meet active demand that is outdoor live and mobile live broadcast service.
The above-mentioned method illustrating the embodiment of the present invention, below for the ease of implementing the such scheme of the embodiment of the present invention better, correspondingly, is also provided for the relevant apparatus and the equipment that coordinate enforcement such scheme below.
The structural representation of the data transmission device that the embodiment of the present invention as shown in Figure 4 provides, data transmission device 40 can comprise acquisition module 400, compression coding module 402, segmentation group bag module 404, first distribution module 406 and adjusting module 408, wherein,
Acquisition module 400 is for obtaining the audio, video data of collection;
Compression coding module 402 is for carrying out compression coding to described audio, video data;
Segmentation group bag module 404, for carrying out segmentation group bag according to the segmentation Group Package Policy preset to the audio, video data after compression coding, obtains the packet of preset format;
Described allocation of packets, for the communication link of the multiple wireless communication modules difference correspondences according to configuration, is transmitted by the first distribution module 406 in described communication link; Wherein, the communication link that in the plurality of wireless communication module preset at this data transmission device 40, at least two wireless communication modules are corresponding adopts different mobile communications networks to communicate;
Adjusting module 408 is for the network bandwidth information of the every communication link of Real-time Obtaining, the distribution of described packet is adjusted in real time according to described network bandwidth information, and/or adjust the coding parameter that described audio, video data is encoded in real time according to described network bandwidth information, to adjust the code check of the audio, video data after compression coding.
Particularly, the structural representation of the first distribution module that the embodiment of the present invention as shown in Figure 5 provides, the first distribution module 406 can comprise scanning element 4060, detecting unit 4062 and check processing unit 4064, wherein,
Whether scanning element 4060 sends time-out for the transmission buffering area scanning each wireless communication module successively corresponding;
Detecting unit 4062 is for scanning the transmission buffering area sending time-out during when scanning element 4060, whether detection exists transmission sends buffering area normally;
The allocation of packets of transmission time-out, for when the testing result of detecting unit 4062 is for being, sends in buffering area to described transmission and sending by check processing unit 4064 normally; When the testing result of detecting unit 4062 is no, then abandon the described packet sending time-out.
Further, the structural representation of the adjusting module that the embodiment of the present invention as shown in Figure 6 provides, adjusting module 408 can comprise the first minimizing unit 4080, second minimizing unit 4082, or multinomial arbitrarily of reducing in unit 4084 and increase unit 4086, be described all to comprise said units in Fig. 6
First reduces unit 4080 for when the network transmission rate of the first communication link is lower than the first predetermined threshold value, reduces the packet being assigned to described first communication link; Or
Second reduces unit 4082 for when the success rate by second communication link transmission data bag is lower than the second predetermined threshold value, reduces the packet being assigned to described second communication link; Or
Reduce unit 4084 for when the success rate by second communication link transmission data bag is lower than the second predetermined threshold value, reduced the code check of the audio, video data after compression coding by adjustment coding parameter; Or
Increase unit 4086 for being greater than the code check of the audio, video data after present encoding compression when the total bandwidth of the communication link added up, and the code check of audio, video data after the compression of described present encoding is when being less than default maximum, increased the code check of the audio, video data after compression coding by adjustment coding parameter.
Again further, acquisition module 400 in the embodiment of the present invention can also be used at the first distribution module 406 communication link corresponding respectively according to multiple wireless communication modules of configuration, after transmitting in described allocation of packets to described communication link, the rate flow information that each wireless communication module of Real-time Obtaining is corresponding;
The structural representation of another embodiment of data transmission device provided by the invention so as shown in Figure 7, data transmission device 40 comprises outside acquisition module 400, compression coding module 402, segmentation group bag module 404, first distribution module 406 and adjusting module 408, the second distribution module 4010 can also be comprised, for according to described rate flow information, preferentially by allocation of packets to communication link corresponding to the low wireless communication module of rate, or stop allocation of packets being greater than communication link corresponding to the wireless communication module of the 3rd predetermined threshold value to flow use.
Will be understood that, the function of each functional module of the data transmission device 40 of the present embodiment according to the method specific implementation in said method embodiment, can repeat no more herein.
Refer to Fig. 8, Fig. 8 is the structural representation of the data transmission set that the embodiment of the present invention provides.Wherein, data transmission set 80 can comprise: at least one processor 801, such as CPU, multiple wireless communication module 804, audio frequency and video capture module 803, memory 805, at least one communication bus 802 and at least one storage battery 806.Wherein, communication bus 802 is for realizing the connection communication between these assemblies.Wherein, audio frequency and video capture module 803 can gather audio, video data by HDMI or SDI interface, and described audio, video data is inputed to processor 801;
Storage battery 806 in the embodiment of the present invention is hot-swappable, works for this data transmission set 80;
Multiple wireless communication module 804 is corresponding multiple communication link respectively, and wherein, the communication link that at least two wireless communication modules are corresponding adopts different mobile communications networks to communicate;
Processor 801 is connected with multiple wireless communication module 804 respectively, for being obtained the audio, video data gathered by audio frequency and video capture module 803, carries out compression coding to described audio, video data; According to the segmentation Group Package Policy preset, segmentation group bag is carried out to the audio, video data after compression coding, obtain the packet of preset format; The communication link corresponding respectively according to described multiple wireless communication modules 802 of configuration, transmits described allocation of packets in described communication link; The network bandwidth information of the every communication link of Real-time Obtaining, the distribution of described packet is adjusted in real time according to described network bandwidth information, and/or adjust the coding parameter that described audio, video data is encoded in real time according to described network bandwidth information, to adjust the code check of the audio, video data after compression coding.
Particularly, the communication link that processor 801 is corresponding respectively according to multiple wireless communication modules 802 of configuration, can comprise carrying out transmission in described allocation of packets to described communication link:
Whether the transmission buffering area scanning each wireless communication module 802 correspondence successively sends time-out;
When scanning the transmission buffering area sending time-out, whether detection exists transmission sends buffering area normally;
When the test results is yes, the allocation of packets sending time-out is sent in buffering area normally to described transmission send; When testing result is no, then abandon the described packet sending time-out.
Further, processor 801 adjusts the distribution of described packet in real time according to described network bandwidth information, comprises following at least one item:
When the network transmission rate of the first communication link is lower than the first predetermined threshold value, reduce the packet being assigned to described first communication link; Or
When the success rate by second communication link transmission data bag is lower than the second predetermined threshold value, reduce the packet being assigned to described second communication link.
Further, processor 801 adjusts the coding parameter of encoding to described audio, video data in real time according to described network bandwidth information, comprises following at least one item:
When the total bandwidth of communication link of adding up is less than the code check of the audio, video data after present encoding compression, reduced the code check of the audio, video data after compression coding by adjustment coding parameter; Or
The code check of the audio, video data after the total bandwidth of communication link of statistics is greater than present encoding compression, and the code check of audio, video data after the compression of described present encoding is when being less than default maximum, increased the code check of the audio, video data after compression coding by adjustment coding parameter.
Further, the communication link that processor 801 is corresponding respectively according to multiple wireless communication modules 802 of configuration, after transmitting in described allocation of packets to described communication link, also comprises:
The rate flow information of each wireless communication module 802 correspondence of Real-time Obtaining;
According to described rate flow information, preferentially by allocation of packets to communication link corresponding to the low wireless communication module of rate, or stop allocation of packets being greater than communication link corresponding to the wireless communication module of the 3rd predetermined threshold value to flow use.
It should be noted that, how the processor 801 in the embodiment of the present invention realizes the transmission of data can with reference to above-mentioned Fig. 2 and Fig. 3 embodiment of the method, or Fig. 4 to Fig. 7 is about the specific implementation of data transmission device 70 embodiment, repeats no more here.Data transmission set 80 in the embodiment of the present invention can include but not limited to personal computer, removable computer, panel computer, personal digital assistant (PersonalDigitalAssistant, PDA), media player or other there is the Intelligent treatment equipment of above-mentioned data-transformation facility.
In sum, by implementing the embodiment of the present invention, to gather and audio, video data after having carried out compression coding carries out segmentation group bag according to the segmentation Group Package Policy preset, after obtaining the packet of preset format, the communication link corresponding respectively according to multiple wireless communication modules of configuration, transmit in allocation of packets to communication link, wherein, the communication link that at least two wireless communication modules are corresponding adopts different mobile communications networks to communicate, thus solve in prior art by mobile communications network carry out audio frequency and video live time, easily occur communication blind district and signal not so good and cause live card to pause or the problem of failure, reduce the threshold of outdoor moving main broadcaster, in addition, can in real time according to the distribution of network bandwidth information real-time aligned data bag, and/or the coding parameter that audio, video data is encoded is adjusted in real time according to network bandwidth information, further increase the ageing of transfer of data, ensure that live user can realize stable with cheap cost and outdoor moving is live clearly, avoid the problem that satellite or microwave direct-seeding very flexible and the Internet direct-seeding scope of application are limited, meet active demand that is outdoor live and mobile live broadcast service.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-OnlyMemory, ROM) or random store-memory body (RandomAccessMemory, RAM) etc.
Above disclosedly be only a kind of preferred embodiment of the present invention, certainly the interest field of the present invention can not be limited with this, one of ordinary skill in the art will appreciate that all or part of flow process realizing above-described embodiment, and according to the equivalent variations that the claims in the present invention are done, still belong to the scope that invention is contained.
Claims (14)
1. a data transmission method, is characterized in that, comprising:
Obtain the audio, video data gathered, compression coding is carried out to described audio, video data;
According to the segmentation Group Package Policy preset, segmentation group bag is carried out to the audio, video data after compression coding, obtain the packet of preset format;
The communication link corresponding respectively according to multiple wireless communication modules of configuration, transmits described allocation of packets in described communication link; Wherein, the communication link that at least two wireless communication modules are corresponding adopts different mobile communications networks to communicate;
The network bandwidth information of the every communication link of Real-time Obtaining, the distribution of described packet is adjusted in real time according to described network bandwidth information, and/or adjust the coding parameter that described audio, video data is encoded in real time according to described network bandwidth information, to adjust the code check of the audio, video data after compression coding.
2. the method for claim 1, is characterized in that, the described communication link corresponding respectively according to multiple wireless communication modules of configuration, comprises carrying out transmission in described allocation of packets to described communication link:
Whether the transmission buffering area scanning each wireless communication module successively corresponding sends time-out;
When scanning the transmission buffering area sending time-out, whether detection exists transmission sends buffering area normally;
When the test results is yes, the allocation of packets sending time-out is sent in buffering area normally to described transmission send; When testing result is no, then abandon the described packet sending time-out.
3. the method for claim 1, is characterized in that, the described distribution adjusting described packet according to described network bandwidth information in real time, comprises following at least one item:
When the network transmission rate of the first communication link is lower than the first predetermined threshold value, reduce the packet being assigned to described first communication link; Or
When the success rate by second communication link transmission data bag is lower than the second predetermined threshold value, reduce the packet being assigned to described second communication link.
4. the method for claim 1, is characterized in that, describedly adjusts the coding parameter of encoding to described audio, video data in real time according to described network bandwidth information, comprises following at least one item:
When the total bandwidth of communication link of adding up is less than the code check of the audio, video data after present encoding compression, reduced the code check of the audio, video data after compression coding by adjustment coding parameter; Or
The code check of the audio, video data after the total bandwidth of communication link of statistics is greater than present encoding compression, and the code check of audio, video data after the compression of described present encoding is when being less than default maximum, increased the code check of the audio, video data after compression coding by adjustment coding parameter.
5. the method as described in any one of claim 1-4, is characterized in that, the described communication link corresponding respectively according to multiple wireless communication modules of configuration, after transmitting in described allocation of packets to described communication link, also comprises:
The rate flow information that each wireless communication module of Real-time Obtaining is corresponding;
According to described rate flow information, preferentially by allocation of packets to communication link corresponding to the low wireless communication module of rate, or stop allocation of packets being greater than communication link corresponding to the wireless communication module of the 3rd predetermined threshold value to flow use.
6. a data transmission device, is characterized in that, comprising:
Acquisition module, for obtaining the audio, video data of collection;
Compression coding module, for carrying out compression coding to described audio, video data;
Segmentation group bag module, for carrying out segmentation group bag according to the segmentation Group Package Policy preset to the audio, video data after compression coding, obtains the packet of preset format;
First distribution module, for the communication link that the multiple wireless communication modules according to configuration are corresponding respectively, transmits described allocation of packets in described communication link; Wherein, the communication link that at least two wireless communication modules are corresponding adopts different mobile communications networks to communicate;
Adjusting module, for the network bandwidth information of the every communication link of Real-time Obtaining, the distribution of described packet is adjusted in real time according to described network bandwidth information, and/or adjust the coding parameter that described audio, video data is encoded in real time according to described network bandwidth information, to adjust the code check of the audio, video data after compression coding.
7. device as claimed in claim 6, it is characterized in that, described first distribution module comprises:
Whether scanning element, send time-out for the transmission buffering area scanning each wireless communication module successively corresponding;
Detecting unit, during for scanning the transmission buffering area sending time-out when described scanning element, whether detection exists transmission sends buffering area normally;
Check processing unit, for when the testing result of described detecting unit is for being, sends the allocation of packets of transmission time-out in buffering area normally to described transmission and sending; When the testing result of described detecting unit is no, then abandon the described packet sending time-out.
8. device as claimed in claim 6, it is characterized in that, described adjusting module comprises following at least one item:
First reduces unit, for when the network transmission rate of the first communication link is lower than the first predetermined threshold value, reduces the packet being assigned to described first communication link; Or
Second reduces unit, for when the success rate by second communication link transmission data bag is lower than the second predetermined threshold value, reduces the packet being assigned to described second communication link; Or
Reduce unit, when the total bandwidth for the communication link when statistics is less than the code check of the audio, video data after present encoding compression, reduced the code check of the audio, video data after compression coding by adjustment coding parameter; Or
Increase unit, total bandwidth for the communication link when statistics is greater than the code check of the audio, video data after present encoding compression, and the code check of audio, video data after the compression of described present encoding is when being less than default maximum, increased the code check of the audio, video data after compression coding by adjustment coding parameter.
9. the device as described in any one of claim 6-8, it is characterized in that, described acquisition module is also for distinguishing corresponding communication link in described first distribution module according to multiple wireless communication modules of configuration, after transmitting in described allocation of packets to described communication link, the rate flow information that each wireless communication module of Real-time Obtaining is corresponding;
Described data transmission device also comprises: the second distribution module, for according to described rate flow information, preferentially by allocation of packets to communication link corresponding to the low wireless communication module of rate, or stop allocation of packets being greater than communication link corresponding to the wireless communication module of the 3rd predetermined threshold value to flow use.
10. a data transmission set, is characterized in that, comprises audio frequency and video capture module, processor and multiple wireless communication module, wherein
Described audio frequency and video capture module gathers audio, video data by HDMI or SDI interface, and described audio, video data is inputed to described processor;
Described multiple wireless communication module is corresponding multiple communication link respectively, and wherein, the communication link that at least two wireless communication modules are corresponding adopts different mobile communications networks to communicate;
Described processor is connected with described multiple wireless communication module respectively, for being obtained the audio, video data gathered by described audio frequency and video capture module, carries out compression coding to described audio, video data; According to the segmentation Group Package Policy preset, segmentation group bag is carried out to the audio, video data after compression coding, obtain the packet of preset format; The communication link corresponding respectively according to described multiple wireless communication modules of configuration, transmits described allocation of packets in described communication link; The network bandwidth information of the every communication link of Real-time Obtaining, the distribution of described packet is adjusted in real time according to described network bandwidth information, and/or adjust the coding parameter that described audio, video data is encoded in real time according to described network bandwidth information, to adjust the code check of the audio, video data after compression coding.
11. equipment as claimed in claim 10, is characterized in that, the communication link that described processor is corresponding respectively according to multiple wireless communication modules of configuration, comprise carrying out transmission in described allocation of packets to described communication link:
Whether the transmission buffering area scanning each wireless communication module successively corresponding sends time-out;
When scanning the transmission buffering area sending time-out, whether detection exists transmission sends buffering area normally;
When the test results is yes, the allocation of packets sending time-out is sent in buffering area normally to described transmission send; When testing result is no, then abandon the described packet sending time-out.
12. equipment as claimed in claim 10, it is characterized in that, described processor adjusts the distribution of described packet in real time according to described network bandwidth information, comprises following at least one item:
When the network transmission rate of the first communication link is lower than the first predetermined threshold value, reduce the packet being assigned to described first communication link; Or
When the success rate by second communication link transmission data bag is lower than the second predetermined threshold value, reduce the packet being assigned to described second communication link.
13. equipment as claimed in claim 10, it is characterized in that, described processor adjusts the coding parameter of encoding to described audio, video data in real time according to described network bandwidth information, comprises following at least one item:
When the total bandwidth of communication link of adding up is less than the code check of the audio, video data after present encoding compression, reduced the code check of the audio, video data after compression coding by adjustment coding parameter; Or
The code check of the audio, video data after the total bandwidth of communication link of statistics is greater than present encoding compression, and the code check of audio, video data after the compression of described present encoding is when being less than default maximum, increased the code check of the audio, video data after compression coding by adjustment coding parameter.
14. equipment as described in any one of claim 10-13, is characterized in that, the communication link that described processor is corresponding respectively according to multiple wireless communication modules of configuration, after transmitting in described allocation of packets to described communication link, also comprise:
The rate flow information that each wireless communication module of Real-time Obtaining is corresponding;
According to described rate flow information, preferentially by allocation of packets to communication link corresponding to the low wireless communication module of rate, or stop allocation of packets being greater than communication link corresponding to the wireless communication module of the 3rd predetermined threshold value to flow use.
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