CN107342951A - Data transmission method and device - Google Patents
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- CN107342951A CN107342951A CN201710475613.4A CN201710475613A CN107342951A CN 107342951 A CN107342951 A CN 107342951A CN 201710475613 A CN201710475613 A CN 201710475613A CN 107342951 A CN107342951 A CN 107342951A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 132
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- 238000005538 encapsulation Methods 0.000 claims description 7
- 238000012546 transfer Methods 0.000 abstract description 10
- 238000004891 communication Methods 0.000 abstract description 4
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
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Abstract
The problem of disclosure provides a kind of data transmission method and device, is related to the communications field, can solve the problem that network resources waste in data transmission procedure, and data transmission efficiency is low.Concrete technical scheme is：Critical data is obtained in target data stream according to default rule；Pass through the critical data in dedicated bearer transmission objectives data flow；By commonly carrying other data in transmission objectives data flow in addition to critical data.The disclosure is used for data transfer.
Description
Technical field
This disclosure relates to communication technical field, more particularly to data transmission method and device.
Background technology
Service quality (English：Quality of Service, QOS) refer to a network and can utilize various basic technologies,
The ability of data transport service is provided for specified communication service.QOS has different grades, requires higher to network transmission quality
Business, its QOS is higher ranked, for example, instant video call, real-time phonetic call etc.；Relatively low is required to network transmission quality
Business, its QOS grade is relatively low, such as browses webpage, downloads file etc..
For the higher ranked business of QOS, in its data transmission procedure, QOS grades it has been determined that the business owns
Data can all be transmitted by the QOS of higher level, still, among the data of transmission, nor all data be required for it is higher
QOS grades, the higher QOS grades of some possible needs, the QOS grades that some need not be too high.If all of
Data transfer is all transmitted using higher QOS grades, has resulted in the waste of Internet resources, data transfer it is less efficient.
The content of the invention
The embodiment of the present disclosure provides a kind of data transmission method and device, can solve the problem that Internet resources in data transmission procedure
Waste, the problem of data transmission efficiency is low.The technical scheme is as follows：
According to the first aspect of the embodiment of the present disclosure, there is provided a kind of data transmission method, this method include：
Critical data is obtained in target data stream according to default rule；
Pass through the critical data in dedicated bearer transmission objectives data flow；
By commonly carrying other data in transmission objectives data flow in addition to critical data.
For target data stream, critical data is more important, is transmitted by dedicated bearer, ensure that the transmission of critical data
Quality, except other data of critical data are not critically important, by commonly carrying transmission, reduce the network of other data occupancy
Resource, improve efficiency of transmission.
In one embodiment, critical data is obtained in target data stream according to default rule, including：
According to the default rule of strategy group definition, crucial number is obtained in target data stream by critical data identifier
According to.
In one embodiment, default rule includes crucial data type, according to default rule in target data
Critical data is obtained in stream, including：
Critical data is obtained in target data stream according to the data type of key.
Crucial data type is exactly the type of important data, and critical data can be included in decoding, rebuild, entangle
It is wrong, recover the data to be used during multimedia messages etc., decoded, rebuild, error correction, recovering multimedia messages and waited
Cheng Zhong is higher to the dependence of critical data.According to key data type in target data stream by the data of these types
It is exactly critical data to extract, and ensure that transmission quality during important data transfer.
In one embodiment, crucial data type includes instantaneous decoding refresh IDR pieces, sequence parameter set SPS pieces, figure
As the Primary layer in parameter set PPS pieces, data segmentation A areas, I frames, the frame being referenced, character block, hierarchical coding, main redundant slice,
In the voice data that irregular image pixel value, the primary coded picture in access unit, the microphone directly transmitted gathers
At least one of.
The data type illustrated herein is all more important data, can be transmitted as critical data, energy
Enough improve Consumer's Experience.
In one embodiment, default rule also includes network environment parameters, according to default rule in target data
Critical data is obtained in stream, including：
Crucial data type is determined according to network environment parameters；
Critical data is obtained in target data stream according to the data type of key.
If network environment is preferable, critical data can be with more, if network environment is poor, critical data too much will
Transmission rate is reduced, causes congestion, therefore, crucial data type is determined according to network environment parameters, for different networks
The different crucial data types of environment set so that the transmission of critical data meets network environment.
In one embodiment, network environment parameters include wireless access type, access point configures, up-downgoing matches, most
Big transmission unit, maximum data segmentation, transmission rate grade, maximum can be established in packet data network link number and application scenarios
At least one of.
The parameter illustrated herein can determine the situation of network environment, and certainly, the disclosure is not limited to this.
In one embodiment, critical data includes at least one data cell, passes through dedicated bearer transmission objectives data
Critical data in stream, including：
Determine the service quality QOS grades of each data cell at least one data cell；
According to the QOS grades of each data cell, a few data cell is transmitted separately to by dedicated bearer.
The critical data transmitted by dedicated bearer can also have different QOS grades, to different Q OS etc. in critical data
The data of level carry out different transmission, have more refined transmission quality, have improved efficiency of transmission.
In one embodiment, by the critical data in dedicated bearer transmission objectives data flow, including：
The critical data in target data stream is transmitted by dedicated bearer by PDN url managements layer.
In one embodiment, before obtaining critical data in target data stream according to default rule, this method is also
Including：
Initial data is obtained, initial data includes audio raw data and video original data；
Initial data is encoded and encapsulation obtains target data stream.
In one embodiment, this method also includes：
Initial data is encoded by MCL, the initial data after coding is packaged to obtain number of targets by NAL
According to stream.
According to the second aspect of the embodiment of the present disclosure, there is provided a kind of data transmission device, including：
Acquisition module, dedicated transmissions module and normal transmission module；
Acquisition module, for obtaining critical data in target data stream according to default rule；
Dedicated transmissions module, for passing through the critical data in dedicated bearer transmission objectives data flow；
Normal transmission module, for by commonly carrying other numbers in transmission objectives data flow in addition to critical data
According to.
In one embodiment, default rule includes crucial data type, and acquisition module includes type submodule；
Type submodule, for being obtained according to the crucial data type recorded in default list in target data stream
Take critical data.
In one embodiment, crucial data type includes instantaneous decoding refresh IDR pieces, sequence parameter set SPS pieces, figure
As the Primary layer in parameter set PPS pieces, data segmentation A areas, I frames, the frame being referenced, character block, hierarchical coding, main redundant slice,
In the voice data that irregular image pixel value, the primary coded picture in access unit, the microphone directly transmitted gathers
At least one of.
In one embodiment, default rule also includes network environment parameters, and acquisition module also includes parameter sub-module；
Parameter sub-module, for determining crucial data type according to network environment parameters；
Type submodule, it is additionally operable to obtain critical data in target data stream according to the data type of key.
In one embodiment, network environment parameters include wireless access type, access point configures, up-downgoing matches, most
Big transmission unit, maximum data segmentation, transmission rate grade, maximum can be established in packet data network link number and application scenarios
At least one of.
In one embodiment, acquisition module, the default rule according to strategy group definition is additionally operable to, passes through critical data
Identifier obtains critical data in target data stream.
In one embodiment, dedicated transmissions module includes service quality submodule and mass transport submodule；
Service quality submodule, for determining service quality QOS of each data cell etc. at least one data cell
Level；
Mass transport submodule, for the QOS grades according to each data cell, it is transmitted separately to by dedicated bearer few
One data cell.
In one embodiment, data transmission device also includes：Raw data module and coding package module；
Raw data module, for obtaining initial data, initial data includes audio raw data and video original data；
Package module is encoded, for being encoded to initial data and encapsulation obtains target data stream.
According to the third aspect of the embodiment of the present disclosure, there is provided a kind of computer-readable recording medium, be stored thereon with calculating
Machine instructs, the data transmission method that any one embodiment for performing above-mentioned first aspect and first aspect is provided, should
Instruction can realize following steps when being executed by processor：
Critical data is obtained in target data stream according to default rule；
Pass through the critical data in dedicated bearer transmission objectives data flow；
By commonly carrying other data in transmission objectives data flow in addition to critical data.
It should be appreciated that the general description and following detailed description of the above are only exemplary and explanatory, not
The disclosure can be limited.
Brief description of the drawings
Accompanying drawing herein is merged in specification and forms the part of this specification, shows the implementation for meeting the disclosure
Example, and be used to together with specification to explain the principle of the disclosure.
Fig. 1 is a kind of flow chart for data transmission method that the embodiment of the present disclosure provides；
Fig. 2 is a kind of logical layer structure schematic diagram for data transmission device that the embodiment of the present disclosure provides；
Fig. 3 is a kind of interaction figure for data transmission method that the embodiment of the present disclosure provides；
Fig. 4 is the mapping graph of a kind of network condition and crucial data type that the embodiment of the present disclosure provides；
Fig. 5 is a kind of structure chart for data transmission device that the embodiment of the present disclosure provides；
Fig. 6 is a kind of structure chart for data transmission device that the embodiment of the present disclosure provides；
Fig. 7 is a kind of structure chart for data transmission device that the embodiment of the present disclosure provides；
Fig. 8 is a kind of structure chart for data transmission device that the embodiment of the present disclosure provides.
Embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the disclosure.On the contrary, they be only with it is such as appended
The example of the consistent apparatus and method of some aspects be described in detail in claims, the disclosure.
The embodiment of the present disclosure provides a kind of data transmission method, as shown in figure 1, the data transmission method includes following step
Suddenly：
101st, critical data is obtained in target data stream according to default rule.
Default rule can define the data type of key, i.e. the data of which type belong to critical data.User can
To be set according to different application scenarios to default rule, the disclosure is not restricted to this.Target data stream is any
One data flow waiting for transmission, the embodiment of the present disclosure illustrate the process of data transfer by taking target data stream as an example.Critical data is
Important data in data transmission procedure, which data is critical data, which specifically include, to be set according to different situations
Fixed, the disclosure is without limitation.
Arrange and default rule is illustrated herein for two example two：
In one embodiment, default rule includes crucial data type, according to default rule in number of targets
According to obtaining critical data in stream, including：
Critical data is obtained in target data stream according to the data type of key.
Crucial data type is exactly the type of important data, and critical data can be included in decoding, rebuild, entangle
It is wrong, recover the more crucial data to be used during multimedia messages etc., decoded, rebuild, error correction, recovering more matchmakers
It is higher to the dependence of critical data during body information etc..According to key data type in target data stream by these
It is exactly critical data that the data of type, which extract, ensure that transmission quality during important data transfer.
In an optional embodiment, crucial data type includes instantaneous decoding refresh (English：
Instantaneous Decoding Refresh, IDR) piece, sequence parameter set (English：Sequence Parameter Set,
SPS) piece, picture parameter set (English：Picture Parameter Set, PPS) piece, data segmentation A areas, I frames, it is referenced
In Primary layer, main redundant slice in frame, character block, hierarchical coding, the irregular image pixel value directly transmitted, access unit
At least one of in the voice data that primary coded picture, microphone gather.Certainly, the data of key are merely illustrative herein
Type can include the data of which type, do not represent the disclosure and be confined to this.
Based on above-mentioned one embodiment, in the second embodiment, default rule also includes network environment parameters, root
Critical data is obtained in target data stream according to default rule, including：
Crucial data type is determined according to network environment parameters；
Critical data is obtained in target data stream according to the data type of key.
Network environment parameters can be used to indicate that the situation of current network conditions.If network environment is preferable, critical data
Can be with more, if network environment is poor, critical data will reduce transmission rate too much, cause congestion, therefore, according to net
Network ambient parameter determines crucial data type, sets different crucial data types for different network environments so that close
The transmission of key data meets network environment.
In a kind of optional embodiment, network environment parameters include wireless access type, access point configuration, up-downgoing
Proportioning, MTU (English：Maximum Transmission Unit, MTU), maximum data segmentation (English：
Maximum Segment Size, MSS), transmission rate grade, maximum can establish packet data network (English：Packet
Data Network, PDN) link number and application scenarios at least one of.
102nd, the critical data in dedicated bearer transmission objectives data flow is passed through.
Carry and refer in the communications field, the path based on a data transfer constructed by Internet resources.Internet resources
Hardware device, time-domain resource and the frequency domain resource in network can be included.
For example, in QOS class letters (English：QOS Class Identifier, QCI) in, usual QCI 1-4 are to ensure
Bit rate (English：Guaranteed Bit Rate, GBR) carrying, there is higher transmission quality, dedicated bearer can be GBR
Carrying.
In one embodiment, critical data includes at least one data cell, passes through dedicated bearer transmission objectives data
Critical data in stream, including：Determine the QOS grades of each data cell at least one data cell；According to each data
The QOS grades of unit, a few data cell is transmitted separately to by dedicated bearer.It should be noted that data cell can be
Frame, piece or block, a frame can include one or more pieces, and a piece can include one or more blocks, and the disclosure is to this
It is not limited.
The critical data transmitted by dedicated bearer can also have different QOS grades, to different Q OS etc. in critical data
The data of level carry out different transmission, have more refined transmission quality, have improved efficiency of transmission.
103rd, by commonly carrying other data in transmission objectives data flow in addition to critical data.
With reference to the description in above-mentioned steps 102 for carrying, common carrying can not ensure bit rate (English：Non
Guaranteed Bit Rate, Non-GBR) carrying, corresponding QOS grades are typically QCI 5-9.When establishing carrying, generally
First establish a common carrying, the carrying that common carrying can be by default, if without special instruction, data are all given tacit consent to by common
Carrying transmission, then resettles dedicated bearer, for transmitting critical data.
For target data stream, critical data is more important, is transmitted by dedicated bearer, ensure that the transmission of critical data
Quality, except other data of critical data are not critically important, by commonly carrying transmission, reduce the network of other data occupancy
Resource, improve efficiency of transmission.
Based on the data transmission method described in embodiment corresponding to above-mentioned Fig. 1, below to the executive agent of this method
Illustrate, this method can apply to data transmission device, and the data transmission device can be user equipment or server, use
Family equipment can be the terminal device such as smart mobile phone, tablet personal computer.There is provided as shown in Fig. 2 Fig. 2 is the embodiment of the present disclosure
A kind of logical layer structure schematic diagram of data transmission device, in Fig. 2, data transmission device can include multimedia coding layer (English
Text：Multimedia Coding Layer, MCL), network abstract layer (English：Network Abstract Layer, NAL),
Tactful group, critical data identifier, message reconstruction of layer (English：Packet Refactoring Layer, PRL), host-host protocol
(English：Real-time Transport Protocol, RTP) layer, PDN url management layers.
Wherein, MCL is used to be encoded the initial data of input, and initial data can include video original data and sound
Frequency initial data, export to complete the video and audio bit stream of coding.Predictive coding, residual can be included to video original data coding
Difference generation, block conversion, quantify, entropy code, the video encoding unit of output can include Interval data, piece group, piece, macro block, block
Etc. data cell；It is the code stream after encoded compression to audio raw data coding result.
NAL is used to, according to bit stream caused by given format encapsulation MCL, generate target data stream, target data stream can be with
Including at least one network abstraction layer unit (English：Network Abstract Layer Unit, NALU).
Tactful group defines the part or all of of default rule.For example, tactful group can define network environment parameters bag
Which is included；Which the tactful group of data type that can also define key include.
Critical data identifier is used for default rule defined in regulative strategy group, according to default rule in number of targets
According to extracting critical data in stream.
PRL is used to carry out the NALU for recombinating needs according to NAL identicals rule restructuring generation message reconstruct layer unit
(English：Packet Refactoring Layer Unit, PRLU).
RTP layers are used to be separately dispensed into not critical data and other data according to the extraction result of critical data identifier
Same RTP sessions.
PDN url management layers, for the carrying different to the data distribution in different RTP sessions.To critical data point
With dedicated bearer, other data distributions are commonly carried.It should be noted that when establishing carrying, first establish common carrying and make
For default bearing, crucial carrying is then established, without special circumstances, data are all transmitted by default bearing, when having critical data,
Transmitted by key carrying.
The data transmission method that the embodiment of the present disclosure provides, crucial number is obtained according to default rule in target data stream
According to；Pass through the critical data in dedicated bearer transmission objectives data flow；By commonly carrying in transmission objectives data flow except key
Other data outside data.For target data stream, critical data is more important, is transmitted by dedicated bearer, ensure that pass
The transmission quality of key data, except other data of critical data are not critically important, by commonly carrying transmission, reduce other numbers
According to the Internet resources of occupancy, efficiency of transmission is improved.
The data transmission method provided based on embodiment corresponding to above-mentioned Fig. 1, another embodiment of the disclosure provide a kind of number
According to transmission method, this method can apply to send equipment and receiving device, for example, it can be terminal device or net to send equipment
Network server etc., receiving device can also be terminal device or webserver etc..The present embodiment using send audio, video data as
Example illustrates, and does not represent the disclosure and is confined to this.Shown in reference picture 3, the data transmission method that the present embodiment provides includes
Following steps：
301st, send equipment and receiving device establishes IMS carryings.
Wherein, IMS is internet protocol multi-media sub-system (English：Internet Protocol Multimedia
Subsystem).Send equipment and transmit audio, video data, it is necessary to establish the carrying to receiving device.
During IMS carryings are established, send and establish at least one RTP between equipment and receiving device
(English：Real-time Transport Protocol, RTP) session, the PDN links of lower floor corresponding to RTP sessions are established, are built
The carrying that vertical PDN is chained.It should be noted that carrying is the path based on a data transfer constructed by Internet resources,
One PDN link can have one or more carryings, and different RTP sessions correspond to the different bearer under lower floor PDN links.
302nd, send equipment and obtain initial data.
Initial data can include audio raw data and video original data.For example, if it is that terminal is set to send equipment
Standby, then terminal device can gather audio raw data by microphone, and video original data is gathered by camera, certainly,
Can also be using the stored voice data of terminal device as audio raw data, using stored video data as regarding
Frequency initial data.
303rd, send equipment and generation target data stream is encoded and encapsulated to initial data.
It should be noted that in logic level, multimedia coding layer (English can be passed through：Multimedia Coding
Layer, MCL) initial data is encoded, Video coding can include predictive coding, Residual Generation, block conversion, quantization, entropy
Coding etc., the video coding result of output can include the data cells such as Interval data, piece group, piece, macro block, block；Audio coding
Result can be code stream after encoded compression.After MCL encodes one bit stream of generation to initial data, pass through network
Level of abstraction (English：Network Abstract Layer, NAL) encapsulation generation target data stream is carried out to bit stream, make its symbol
The data structure of network transmission is closed, target data stream can include at least one network abstraction layer unit (English：Network
Abstract Layer Unit, NALU), a usual NALU includes a head and a data load.
304th, send equipment and crucial data type is determined according to network environment parameters.
Network environment parameters can be used in determining current network condition.
For example, a mapping between network condition and data type can be established, as shown in figure 4, can will be network-like
Condition is divided into multiple grades, and the bigger grade of numbering, network condition is better, and each grade corresponds to several data types, according to
After network environment parameters determine network condition, it is possible to determine which the crucial data type corresponding to current network conditions has
A bit.Certainly, it is merely illustrative herein, does not represent the disclosure and be confined to this.
305th, send equipment and critical data is obtained in target data stream according to the data type of key.
For example, target data stream includes multiple NALU, each NALU header and the information of data load can be extracted,
Whether to include critical data in this determination NALU.
Herein, two specific embodiments are enumerated to illustrate critical data：
In the first embodiment, such as during current network congestion, using I frames as critical data, it is necessary to extract each
I frames (the English of frame sequence：I Frame), I frames are the key frames of a frame sequence, the first frame of typically one frame sequence.But
It is, if what is included in a NALU is more than I frames, to also have other data, these other data and non-critical data, now,
Need to extract I frames, by message reconstruction of layer (English：Packet Refactoring Layer, PRL) I frames are carried out again
Group is formed and NALU data structure identicals message reconstruct layer unit (English：Packet Refactoring Layer Unit,
PRLU)。
In second of embodiment, if including the data of microphone collection in target data stream, microphone is gathered
Data as critical data.Under normal circumstances, in multimedia service, what microphone gathered is the voice of people, is relatively to attach most importance to
The data wanted, using the data of microphone collection as critical data, it ensure that the voice of people carries out the transmission of high quality, improve and use
Experience at family.
Certainly, crucial data type can have many kinds, and the disclosure is not restricted to this.
306th, critical data of the equipment by dedicated bearer into receiving device transmission target data stream is sent.
After step 305, this method also includes：
307th, equipment is sent by commonly carrying other data in transmission objectives data flow in addition to critical data.
With reference to step 306-307, in one embodiment, will can be included at least in target data stream by RTP layers
One NALU is distributed among different RTP sessions respectively, and a RTP session can regard a queue to be sent as.Example
Such as, there can be 4 RTP sessions, the voice data in critical data is distributed to first RTP session, by critical data
Video data is distributed to second RTP session, and the voice data in non-critical data is distributed into the 3rd RTP session, will be non-
Video data in critical data is distributed to the 4th RTP session.It should be noted that first RTP session and second RTP
It is dedicated bearer corresponding to session, is commonly to carry corresponding to the 3rd RTP session and the 4th RTP session.PDN url managements
Different NALU is mapped in different PDN carrying and is transmitted according to each NALU QOS grades by layer.
308th, receiving device is decoded and played to the target data stream of reception.
For a user, for example, during multi-medium data remote transmission, critical data is transmitted by dedicated bearer
Real-time, data integrity, audio-visual quality of data transfer etc. are ensure that, and crucial data are determined according to network environment
Type so that data transfer adapts to current network conditions, meanwhile, other data are transmitted by commonly carrying, save network money
Source, improve efficiency of transmission.
The data transmission method that the embodiment of the present disclosure provides, crucial number is obtained according to default rule in target data stream
According to；Pass through the critical data in dedicated bearer transmission objectives data flow；By commonly carrying in transmission objectives data flow except key
Other data outside data.For target data stream, critical data is more important, is transmitted by dedicated bearer, ensure that pass
The transmission quality of key data, except other data of critical data are not critically important, by commonly carrying transmission, reduce other numbers
According to the Internet resources of occupancy, efficiency of transmission is improved.
It is following for disclosure device reality based on the data transmission method described in embodiment corresponding to above-mentioned Fig. 1 and Fig. 3
Example is applied, can be used for performing embodiments of the present disclosure.
The embodiment of the present disclosure provides a kind of data transmission device, as shown in figure 5, the data transmission device 50 includes：Obtain
Module 501, dedicated transmissions module 502 and normal transmission module 503；
Acquisition module 501, for obtaining critical data in target data stream according to default rule；
Dedicated transmissions module 502, for passing through the critical data in dedicated bearer transmission objectives data flow；
Normal transmission module 503, for by commonly carrying other in transmission objectives data flow in addition to critical data
Data.
As shown in fig. 6, acquisition module 501 can include type submodule 5011 and parameter sub-module 5012.
In one embodiment, default rule includes crucial data type, and acquisition module 501 includes type submodule
5011；
Type submodule 5011, for according to the crucial data type recorded in default list in target data stream
Middle acquisition critical data.
In one embodiment, crucial data type includes instantaneous decoding refresh IDR pieces, sequence parameter set SPS pieces, figure
As the Primary layer in parameter set PPS pieces, data segmentation A areas, I frames, the frame being referenced, character block, hierarchical coding, main redundant slice,
In the voice data that irregular image pixel value, the primary coded picture in access unit, the microphone directly transmitted gathers
At least one of.
In one embodiment, default rule also includes network environment parameters, and acquisition module 501 also includes parameter submodule
Block 5012；
Parameter sub-module 5012, for determining crucial data type according to network environment parameters；
Type submodule 5011, it is additionally operable to obtain critical data in target data stream according to the data type of key.
In one embodiment, network environment parameters include wireless access type, access point configures, up-downgoing matches, most
Big transmission unit, maximum data segmentation, transmission rate grade, maximum can be established in packet data network link number and application scenarios
At least one of.
In one embodiment, acquisition module, the default rule according to strategy group definition is additionally operable to, passes through critical data
Identifier obtains critical data in target data stream.
In one embodiment, as shown in fig. 7, dedicated transmissions module 502 includes service quality submodule 5021 and quality
Transmit submodule 5022；
Service quality submodule 5021, for determining the service quality of each data cell at least one data cell
QOS grades；
Mass transport submodule 5022, for the QOS grades according to each data cell, transmitted respectively by dedicated bearer
At least one data cell.
In one embodiment, as shown in figure 8, data transmission device also includes：Raw data module 504 and coding encapsulate
Module 505；
Raw data module 504, for obtaining initial data, initial data includes audio raw data and video original number
According to；
Package module 505 is encoded, for being encoded to initial data and encapsulation obtains target data stream.
The data transmission device that the embodiment of the present disclosure provides, crucial number is obtained according to default rule in target data stream
According to；Pass through the critical data in dedicated bearer transmission objectives data flow；By commonly carrying in transmission objectives data flow except key
Other data outside data.For target data stream, critical data is more important, is transmitted by dedicated bearer, ensure that pass
The transmission quality of key data, except other data of critical data are not critically important, by commonly carrying transmission, reduce other numbers
According to the Internet resources of occupancy, efficiency of transmission is improved.
Based on the data transmission method described in embodiment corresponding to above-mentioned Fig. 1 and Fig. 3, the embodiment of the present disclosure also provides
A kind of computer-readable recording medium, for example, non-transitorycomputer readable storage medium can be read-only storage (English：
Read Only Memory, ROM), random access memory (English：Random Access Memory, RAM), CD-ROM, magnetic
Band, floppy disk and optical data storage devices etc..Computer instruction is stored with the storage medium, for performing above-mentioned Fig. 1 and Fig. 3 pairs
The data transmission method described in embodiment answered, here is omitted.
Those skilled in the art will readily occur to the disclosure its after considering specification and putting into practice disclosure disclosed herein
Its embodiment.The application is intended to any modification, purposes or the adaptations of the disclosure, these modifications, purposes or
Person's adaptations follow the general principle of the disclosure and including the undocumented common knowledges in the art of the disclosure
Or conventional techniques.Description and embodiments are considered only as exemplary, and the true scope of the disclosure and spirit are by following
Claim is pointed out.
It should be appreciated that the precision architecture that the disclosure is not limited to be described above and is shown in the drawings, and
And various modifications and changes can be being carried out without departing from the scope.The scope of the present disclosure is only limited by appended claim.
Claims (16)
1. a kind of data transmission method, it is characterised in that methods described includes：
Critical data is obtained in target data stream according to default rule；
Critical data in the target data stream is transmitted by dedicated bearer；
By commonly carrying other data in the transmission target data stream in addition to the critical data.
2. according to the method for claim 1, it is characterised in that the default rule includes crucial data type, institute
State and critical data is obtained in target data stream according to default rule, including：
The critical data is obtained in the target data stream according to the crucial data type.
3. according to the method for claim 2, it is characterised in that
The crucial data type include instantaneous decoding refresh IDR pieces, sequence parameter set SPS pieces, picture parameter set PPS pieces,
Data segmentation A areas, I frames, the frame being referenced, character block, the Primary layer in hierarchical coding, main redundant slice, not advising of directly transmitting
At least one of in the voice data that then primary coded picture in image pixel value, access unit, microphone gather.
4. according to the method for claim 2, it is characterised in that the default rule also includes network environment parameters, institute
State and critical data is obtained in target data stream according to default rule, including：
The crucial data type is determined according to the network environment parameters；
The critical data is obtained in the target data stream according to the crucial data type.
5. according to the method for claim 4, it is characterised in that
The network environment parameters include wireless access type, access point configuration, up-downgoing proportioning, MTU, maximum
Data sectional, transmission rate grade, it is maximum can establish in packet data network link number and application scenarios at least one of.
6. according to the method for claim 1, it is characterised in that obtain key in target data stream according to default rule
Data, including：
According to the default rule of strategy group definition, institute is obtained in the target data stream by critical data identifier
State critical data.
7. according to the method for claim 1, it is characterised in that the critical data includes at least one data cell, leads to
The critical data crossed in the dedicated bearer transmission target data stream, including：
Determine the service quality QOS grades of each data cell at least one data cell；
According to the QOS grades of each data cell, at least one data sheet is transmitted by the dedicated bearer respectively
Member.
8. according to the method described in claim any one of 1-7, it is characterised in that according to default rule in target data stream
Before obtaining critical data, methods described also includes：
Initial data is obtained, the initial data includes audio raw data and video original data；
The initial data is encoded and encapsulation obtains the target data stream.
A kind of 9. data transmission device, it is characterised in that including：Acquisition module, dedicated transmissions module and normal transmission module；
The acquisition module, for obtaining critical data in target data stream according to default rule；
The dedicated transmissions module, for transmitting the critical data in the target data stream by dedicated bearer；
The normal transmission module, for by commonly carrying in the transmission target data stream in addition to the critical data
Other data.
10. device according to claim 9, it is characterised in that the default rule includes crucial data type, institute
Stating acquisition module includes type submodule；
The type submodule, for obtaining the crucial number in the target data stream according to the crucial data type
According to.
11. device according to claim 10, it is characterised in that
The crucial data type include instantaneous decoding refresh IDR pieces, sequence parameter set SPS pieces, picture parameter set PPS pieces,
Data segmentation A areas, I frames, the frame being referenced, character block, the Primary layer in hierarchical coding, main redundant slice, not advising of directly transmitting
At least one of in the voice data that then primary coded picture in image pixel value, access unit, microphone gather.
12. device according to claim 10, it is characterised in that the default rule also includes network environment parameters,
The acquisition module also includes parameter sub-module；
The parameter sub-module, for determining the crucial data type according to the network environment parameters；
The type submodule, it is additionally operable to obtain the key in the target data stream according to the crucial data type
Data.
13. device according to claim 12, it is characterised in that
The network environment parameters include wireless access type, access point configuration, up-downgoing proportioning, MTU, maximum
Data sectional, transmission rate grade, it is maximum can establish in packet data network link number and application scenarios at least one of.
14. device according to claim 9, it is characterised in that
The acquisition module, the default rule according to strategy group definition is additionally operable to, by critical data identifier in institute
State and the critical data is obtained in target data stream.
15. device according to claim 9, it is characterised in that the dedicated transmissions module includes service quality submodule
With mass transport submodule；
The service quality submodule, for determining the service quality of each data cell at least one data cell
QOS grades；
The mass transport submodule, for the QOS grades according to each data cell, distinguished by the dedicated bearer
Transmit at least one data cell.
16. according to the device described in claim any one of 9-15, it is characterised in that the data transmission device also includes：It is former
Beginning data module and coding package module；
The raw data module, for obtaining initial data, the initial data includes audio raw data and video is original
Data；
The coding package module, for being encoded to the initial data and encapsulation obtains the target data stream.
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| CN110225347A (en) * | 2019-06-24 | 2019-09-10 | 北京大米科技有限公司 | Method of transmitting video data, device, electronic equipment and storage medium |
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