CN105791899A - Multimedia data transmission and terminal - Google Patents
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Abstract
The embodiment of the invention provides a multimedia data transmission and a terminal. The method comprises following steps of determining the index value of each index on each network channel in a terminal, wherein the indexes are used for representing channel conditions; for each index, according to a preset statistic rule, determining the statistic index value of the index on each network channel; according to the determined statistic index value of each index, determining a code rate coefficient used for coding current to-be-coded multimedia data; using the determined code rate coefficient to code the current to-be-coded multimedia data; based on each determined index value of each network channel, determining the data quantity proportion distributed to each network channel when the coded multimedia data is distributed to each network channel; and according to the determined proportions, distributing the coded multimedia data to each channel for transmission. The multiple network channels in the terminal are integrated to transmit the multimedia data together. The method and the terminal relates to the technical field of mobile communication.
Description
Technical field
The present invention relates to mobile communication technology field, particularly relate to a kind of multimedia data transmission method and terminal.
Background technology
Code check is the important indicator weighing multimedia data quality.Code check can be understood as sampling rate, in unit interval, sampling rate is more big, precision is more high, the multi-medium data dealt is just closer to original multimedia file, but multi-medium data volume is also directly proportional to sampling rate, say, that, multimedia data code rate is more big, precision is more high, and multi-medium data volume is more big, then multi-medium data more not easily transmits.
So, ensure that stability and the fluency of transmission quality of multimedia data become the emphasis in development multi-medium data transmission technology, a lot of big flow real-time multimedia data transport services are significantly high to the requirement of transmission quality of multimedia data, such as: namely take the photograph i.e. biography, video monitoring etc., these real-time multimedia files need bigger code check, again owing to network bandwidth fluctuation is bigger, the multimedia file making cbr (constant bit rate) cannot adapt to multiple network change, just cannot effectively utilize bandwidth when the network bandwidth fluctuates.
Prior art proposes the multimedia data transmission method based on dynamic code rate, specifically includes that before multi-medium data is encoded, obtain the current bit rate of the network bandwidth；Current bit rate according to the described network bandwidth adjusts present encoding code check, utilizes the encoder bit rate after adjusting that multi-medium data is encoded, then is sent by the multi-medium data after coding.Although this multimedia data transmission method based on dynamic code rate solves the problem that the multi-medium data of cbr (constant bit rate) in prior art cannot adapt to multiple network change, but multi-medium data is transmitted only by a network channel, for having the terminal of multiple network channel, such as, there is multiple client identification module (SIM, SubscriberIdentityModule) terminal blocked, each network channel can only independently according to the multimedia data transmission method transmitting multimedia data based on dynamic code rate proposed in prior art, multiple network channels cannot be merged and carry out multi-medium data transmission, efficiency of transmission is low.
Summary of the invention
Embodiments provide a kind of multimedia data transmission method and terminal, in order to solve prior art cannot merge the problem that multiple network channel carries out multi-medium data transmission.
Based on above-mentioned technical problem, embodiments provide a kind of multimedia data transmission method, including:
Determine the desired value of each index characterizing tunnel condition on each network channel in terminal respectively；
For described each index, according to default statistical rules, it is determined that the value of statistical indicant of this index on described each network channel；And
Value of statistical indicant according to the described each index determined, it is determined that the code check coefficient used when encoding for current multi-medium data to be encoded；
Use the described code check system determined that current multi-medium data to be encoded is encoded；
Based on a determination that each desired value of described each network channel, it is determined that the multi-medium data after coding is distributed to described each network channel when sending, the data volume ratio that described each channel allocation arrives；
According to the described ratio determined, the multi-medium data after coding is diverted to described each network channel and is transmitted.
A kind of terminal that the embodiment of the present invention provides, including:
Network status data determines module, for determining the desired value of each index characterizing tunnel condition on each network channel in terminal respectively；
Code check coefficient determination module, for for described each index, according to default statistical rules, it is determined that the value of statistical indicant of this index on described each network channel；And the value of statistical indicant according to the described each index determined, it is determined that the code check coefficient used when encoding for current multi-medium data to be encoded；
Coding module, for using the described code check system determined that current multi-medium data to be encoded is encoded；
Multi-medium data diverter module, for based on a determination that each desired value of described each network channel, it is determined that the multi-medium data after coding is distributed to described each network channel when sending, the data volume ratio that described each channel allocation arrives；According to the described ratio determined, the multi-medium data after coding is diverted to described each network channel and is transmitted.
The beneficial effect of the embodiment of the present invention includes: a kind of multimedia data transmission method that the embodiment of the present invention provides, including: determine the desired value of each index characterizing tunnel condition on each network channel in terminal respectively；For described each index, according to default statistical rules, it is determined that the value of statistical indicant of this index on each network channel；And according to each indicator-specific statistics desired value determined, it is determined that the code check coefficient used when encoding for current multi-medium data to be encoded；Use the code check system determined that current multi-medium data to be encoded is encoded；Based on a determination that each desired value of each network channel, it is determined that the multi-medium data after coding is distributed to described each network channel when sending, the data volume ratio that each channel allocation arrives；According to the described ratio determined, the multi-medium data after coding is diverted to each passage and is transmitted.A kind of multimedia data transmission method that the embodiment of the present invention provides, network channel each with prior art can only independently according to prior art proposes based on compared with the multimedia data transmission method transmitting multimedia data of dynamic code rate, can according to the desired value of each index of the sign tunnel condition of multiple network channels, adjust the code check coefficient that multi-medium data is encoded in real time, and the desired value of each index according to the sign tunnel condition of multiple network channels, adjust the data volume ratio of multiple network tunnel transports multi-medium datas in real time, achieve and the multiple network channels in terminal are merged common transport multi-medium data, improve efficiency of transmission.
Accompanying drawing explanation
The flow chart of a kind of multimedia data transmission method that Fig. 1 provides for the embodiment of the present invention；
The flow chart of a kind of multimedia data transmission method that Fig. 2 provides for the embodiment of the present invention 1；
The structural representation of a kind of terminal that Fig. 3 provides for the embodiment of the present invention；
The structural representation of the preferably embodiment of a kind of terminal that Fig. 4 provides for the embodiment of the present invention.
Detailed description of the invention
Embodiments provide a kind of multimedia data transmission method and terminal, below in conjunction with Figure of description, the preferred embodiments of the present invention are illustrated, should be appreciated that preferred embodiment described herein is merely to illustrate and explains the present invention, be not intended to limit the present invention.And when not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.
The embodiment of the present invention provides a kind of multimedia data transmission method, as it is shown in figure 1, include:
S101, each network channel determining in terminal respectively characterize the desired value of each index of tunnel condition.
S102, for each index, according to default statistical rules, it is determined that the value of statistical indicant of this index on each network channel.
S103, value of statistical indicant according to each index determined in S102, it is determined that the code check coefficient used when encoding for current multi-medium data to be encoded.
Current multi-medium data to be encoded is encoded by the code check system determined in S104, use S103.
S105, each desired value based on each network channel determined in S101, it is determined that the multi-medium data after coding is distributed to described each network channel when sending, the data volume ratio that each channel allocation arrives.
S106, according to the ratio determined in S105, the multi-medium data after coding is diverted to each network channel and is transmitted.
Further, the multimedia data transmission method that the embodiment of the present invention provides, go for having in the terminal of at least two network channel, this at least two network channel can be the communication channel in any wireless communication system (such as: third generation partner program UMTS (3GPPUMTS, 3rdGenerationPartnershipProjectUniversalMobileTelecommun icationsSystem) communication channel, WLAN (WLAN, WirelessLocalAreaNetworks) communication channel etc.).And according to preset rules, the desired value of each index of the sign tunnel condition on each network channel can be added up, such as, can add up in real time, the multimedia data transmission method that the embodiment of the present invention provides, it is possible to the result of statistics every time is carried out.
Below in conjunction with accompanying drawing, with specific embodiment, method provided by the invention and relevant device are described in detail.
Embodiment 1:
In the embodiment of the present invention 1, it is provided that a kind of multimedia data transmission method, as in figure 2 it is shown, specifically include following steps:
S201, match for each network channel in advance.
Wherein, match for each network channel in the following way:
Judging whether each network channel meets following condition, if meeting, then being matched for each network channel by multi-user multiple input multiple output technology (MU-MIMO, Multi-UserMultiple-InputMultiple-Output) mechanism:
Condition one: each network channel meets pre-set space insulated degree requirement between two；
Condition two: each network channel is satisfied by preset signals and interference plus noise ratio (SINR, SignaltoInterferenceplusNoiseRatio) threshold requirement；
Condition three: evaluate system spectral efficiency after each network channel matches and promote to some extent compared with before pairing.
Further, for wireless communication system, except improving data rate by traditional modes such as the signal bandwidths of high order modulation or bigger, it is also possible to improved the capacity of channel by multi-antenna technology.According to different transmission channel kinds, it is possible to use corresponding diversity mode in radio systems.At present, main diversity mode includes time diversity (different time slots and chnnel coding), frequency diversity (different channel, spread spectrum and OFDM) and space diversity etc..What MU-MIMO mechanism utilized is space manner, and compared with independently carrying out data transmission with each network channel, multiple network channels carry out matching, by MU-MIMO mechanism, the transfer rate carrying out data transmission significantly improving each network channel again.
Further, many transmitting antennas of multiple network channels can form virtual MIMO array with the reception antenna of base station side.Multiple network channels of pairing should meet certain space isolation requirement, and by spatial division technology, the transmitting signal of heterogeneous networks passage can be distinguished in base station.Pairing terminal room is isolated by space division, but owing to forming virtual MIMO transmission, pairing terminal can adopt identical running time-frequency resource, although the uplink throughput of each network channel does not improve, but cell throughout performance is highly improved.Further, not being that any two network channel all can match, each network channel needs to meet above-mentioned condition and just can match.
For above-mentioned condition one, meet space isolation between pairing network channel to require: space isolation requires whether meet, judge with the up channel spatial coherence of two network channels, when the channel H1 of base station to first network channel is orthogonal with the channel H2 of base station to second network channel (namely when H1 is multiplied by the conjugation of H2 equal to 0), the spatial coherence of these two network channels is only small, it is possible to as pairing network channel.
For above-mentioned condition two, two network channels of pairing are satisfied by certain SINR thresholding, or the SINR difference between two network channels meets pre-determined threshold.
For above-mentioned condition three, two pairing network channels are independent scheduling before pairing, make as a whole being scheduling after pairing.After condition one and condition two are satisfied by, before relatively matching after system needs assessment pairing, whether the spectrum efficiency of system has lifting: if spectrum efficiency has lifting after pairing, then match；If spectrum efficiency does not promote after pairing.Then not pairing.If there is not good enough user in pairing user, after dispatching as sole user with another user after pairing, owing to overall uplink signal-channel quality is poor, thus the scheduling resource obtained is less, before after pairing, entire throughput is likely lower than pairing.In this case, system evaluation frequency efficiency is lower than before pairing, thus not pairing, so not good enough user's pairing more difficult to get access.
Further, this step can be only performed once, after multiple network channels meet pairing condition and complete pairing, the network channel after follow-up all uses pairing carries out data transmission, and all multiple network channels is matched without distributing transmission channel for data every time.In the specific implementation, it is preferred that, the network channel that pairing network channel can provide for same operator.
Further, the multimedia data transmission method that the embodiment of the present invention provides, it is possible to do not perform this step, first carries out matching carry out data transmission improving further data transmission efficiency again for multiple network channel in this step, be one preferably embodiment.
S202, each network channel determining in terminal respectively characterize the desired value of each index of tunnel condition.
Further, in this step, it is possible to by the desired value of network channel collection network data each index being added up this network channel by correlation module according to the network data collected.
Further, the index characterizing tunnel condition in this step may include that channel time delay, channel jitter and passage unit interval number of dropped packets etc..
There are two network channels: first network passage and the second network channel in terminal, this step may be embodied as: determines the channel time delay of first network passage, channel jitter and passage unit interval number of dropped packets, it is determined that the channel time delay of the second network channel, channel jitter and passage unit interval number of dropped packets.
S203, at least one first pre-set level in each index characterizing tunnel condition, be defined as the value of statistical indicant of this first pre-set level by the desired value of this first pre-set level of each network channel characterizes the best desired value of network condition.
Further, in the embodiment of the present invention, encoding, for multi-medium data, the desired value that the code check coefficient used is each index characterizing network channel situation according to each network to determine in real time, code check coefficient is real-time change along with the multiple network changed condition blocked on multiple network channels more；When network condition is better, the code check coefficient of feedback can tune up, and the code check of multi-medium data increases, and when network condition is poor, the code check coefficient of feedback can be turned down, and the code check of multi-medium data reduces.So, it is necessary to statistics characterizes the value of statistical indicant of each index of network condition, for determining code check coefficient.The different aspect of the network condition of the reflection according to different indexs, some index (the first pre-set level) can carry out the determination of code check coefficient by the desired value that reflection network condition in each network channel is best, and some index (the second pre-set level) can carry out the determination of code check coefficient by the desired value of the reflection network synthesis situation of each network channel.
For the first pre-set level in each index, it is thus necessary to determine that go out each network channel this first pre-set level desired value in characterize the best desired value of network condition, as the first desired value in this step.Further, the first pre-set level value may include that channel time delay, channel jitter.For channel time delay index, network condition is then characterized good owing to channel time delay is little, it needs to be determined that go out smallest passage time delay in the channel time delay of multiple network channel, for channel jitter index, network condition is then characterized good, it is thus necessary to determine that go out smallest passage shake in the channel jitter of multiple network channel owing to channel jitter is little.For two network channels, this step needs the channel time delay of the channel time delay from first network passage and the second network channel determines smallest passage time delay, it is necessary to from the channel jitter of the channel jitter of first network passage and the second network channel, determine that smallest passage is shaken.
S204, for characterize tunnel condition each index at least one second pre-set level, the desired value of the sign network synthesis situation of the desired value of this second pre-set level of each network channel is defined as the value of statistical indicant of this second pre-set level.
Further, the different aspect of the network condition of the reflection according to different indexs, for the second pre-set level in each index, it is thus necessary to determine that go out the desired value of the sign network synthesis situation of the desired value of this second pre-set level of each network channel, as the second desired value in this step.
Further, the second pre-set level value may include that passage unit interval number of dropped packets.For passage unit interval number of dropped packets index, it needs to be determined that go out unit interval number of dropped packets comprehensive in the passage unit interval number of dropped packets of multiple network channel, the i.e. sum of unit interval number of dropped packets, for two network channels, in this step, it is thus necessary to determine that the sum of the unit interval number of dropped packets of two network channels.
Further, the execution of step S203 and step S204 does not have strict sequencing.
S205, according to value of statistical indicant corresponding to the second pre-set level determined in value of statistical indicant corresponding to the first pre-set level determined in S203, S204, and the first corresponding respectively default weight of pre-set level and the second pre-set level, it is determined that the weighted sum of each value of statistical indicant.
Further, it can be the different default weight of each setup measures, according to actual needs, the index bigger for being actually needed middle impact, what can the default weight of this index be arranged is bigger, the index less for being actually needed middle impact, it is possible to what the default weight of this index arranged is less, is even set to zero.
S206, relation according to the negative correlation of the weighted sum determined in code check coefficient and S205, it is determined that the code check coefficient of use when encode for current multi-medium data to be encoded.
Further, weighted value negative correlation for each index that the more little sign network condition of desired value is more good, code check coefficient and this each index, say, that, the weighted value of each index more big (characterizing network condition more poor), code check coefficient is more little, the weighted value of each index more little (characterizing network condition more good), and code check coefficient is more big, it is achieved that when network condition is good, it needs to be determined that go out bigger code check coefficient, when network condition is bad, it is thus necessary to determine that go out less code check coefficient.
Further, owing to code check coefficient and the weighted sum determined have the relation of negative correlation, so, the coefficient between code check coefficient and the weighted sum determined can be determined according to actual needs, determine code check coefficient, or carrying out weighted sum presetting computing to determine code check coefficient, no matter how carrying out computing according to actual needs, as long as ensure that code check coefficient and the weighted sum negative correlation determined.
Further, this step being determined, code check coefficient can obtain current goal code check, multi-medium data can be encoded according to this current target bit rate.
Further, it is assumed that the channel time delay of each network channel is t1,t2,...,tn, the channel jitter of each network channel is j1,j2,...,jn, the passage unit interval number of dropped packets of each network channel is k1,k2,...,kn.VBR mask rate coefficient；T characterizes network channel time delay fusion function, and J characterizes network channel shake fusion function, and K characterizes network channel unit interval number of dropped packets fusion function.
The embodiment of the present invention provides the method for constant bit rate coefficient really to merge network channel network status data as input parameter, and the network parameter of code check coefficient and various inputs is closely related, as shown in formula (1):
VBR=Q [T (t1,t2,...,tn),J(j1,j2,...,jn),K(k1,k2,...,kn)] formula (1)
Wherein, T=MIN (t1,t2,...,tn), J=MIN (j1,j2,...,jn),
The statistical value that T is channel time delay determines function, in the present embodiment for determine each network channel time Yanzhong minimal time delay；The statistical value that J is channel jitter determines function, for determining minimum jitter in the shake of each network channel in the present embodiment；K is that passage unit interval number of dropped packets statistical value determines function, for determining the unit interval number of dropped packets sum of each network channel in the present embodiment.Q is the operation function being determined code check coefficient by the value of statistical indicant of each index, and Q can be determined according to the actual requirements, however it is necessary that and meets formula (2):
VBR ∝ α T+ β J+ γ K formula (2)
Wherein, the default weight of α, β, γ respectively channel time delay, channel jitter and passage unit interval number of dropped packets, and it is respectively less than 0.It is to say, code check coefficient and the weighted sum negative correlation of each value of statistical indicant, when network delay is big, shaking big, unit interval number of dropped packets is many, then affect data transmission, it is possible to turn code check accordingly down；When network delay is little, shaking little, unit interval number of dropped packets is few, then tuned up by code check, it is possible to effectively utilize bandwidth.
Further, provide on the basis of the method for constant bit rate coefficient really in the embodiment of the present invention, it may be considered that the image complexity impact on code check coefficient, namely as shown in formula (3):
VBR=Q [C, T (t1,t2,...,tn),J(j1,j2,...,jn),K(k1,k2,...,kn)] formula (3)
Wherein, C characterizes the image complexity of multi-medium data to be transmitted, determines that the method for code check coefficient is referred to method of the prior art according to image complexity, repeats no more herein.
Further, the code check coefficient defining method that the embodiment of the present invention provides adjusts the code check of multi-medium data coding in real time according to multiple network channel situations, not only takes full advantage of bandwidth but also can ensure that the quality of multi-medium data real-time Transmission.
Current multi-medium data to be encoded is encoded by the code check system that S207, use are determined.
Perform step S208～step S210 respectively for each network channel in each network channel, determine when the multi-medium data after by coding distributes to the transmission of each network channel, the data volume ratio that each channel allocation arrives:
S208, for each index in each index, according to default amalgamation mode, determine in each network channel other network channels except this network channel this index fusion after desired value, account for each network channel this index fusion after the ratio of overall performane value.
Further, when carrying out multi-medium data distribution for multiple network channels, the principle followed is essentially: as far as possible for network channel overabsorption data that network condition is good, the network channel bad for network condition distributes data less, it is possible to weigh the quality of each network channel network condition according to the desired value of the sign network condition index of each network channel determined.For the index that the more little sign network condition of desired value is more good, may determine that the desired value after the fusion of this index of other network channels except this network channel, and the overall performane value after the fusion of this index of each network channel, and determine the ratio of this desired value and overall performane value, ratio is more big it is believed that the network condition of sign of this index of other network channels except this network channel is more poor, so the network condition of this index characterization of this network channel is more good, it should be the data volume that this channel allocation is more many, ratio is more little it is believed that the network condition of sign of this index of other network channels except this network channel is more good, so the network condition of this index characterization of this network channel is more poor, it should be the data volume that this channel allocation is more few.
Further, default amalgamation mode can be determined according to actual needs.For arbitrary index, it is possible to be defined as the default computing mode of the desired value to this index map network passage presetting amalgamation mode, it is necessary to ensure that this computing mode can embody the network condition in this index of map network passage.Such as: by the desired value of this index of other network channels except this network channel and this index of being defined as other network channels merge after desired value, by the desired value of this index of each passage and be defined as the overall performane value after the fusion of each network channel.
S209, according to the respectively corresponding default weight of each index, it is determined that the weighted sum of the ratio value that each index of determining for this network channel is corresponding respectively.
Further, it can be the different default weight of each setup measures, according to actual needs, the index bigger for being actually needed middle impact, what can the default weight of this index be arranged is bigger, the index less for being actually needed middle impact, it is possible to what the default weight of this index arranged is less, is even set to zero.The default weight of each index arranged in this step is corresponding identical with the default weight arranged in step S205.Therefore, time step S208 determines each index respectively corresponding ratio value, for the impact on dividing data volume of the comprehensive multiple indexs, it is thus necessary to determine that the weighted sum of each ratio value.
S210, according to being the data volume ratio of this channel allocation and the positively related relation of ratio value weighted sum determined, it is determined that for the data volume ratio of this channel allocation.
Further, the data volume ratio of arbitrary channel allocation and the ratio weighted sum positive correlation determined, that is, the ratio value weighted sum determined is more big, namely the network condition of other network channels except this arbitrary network channel is more poor, need the data volume for this arbitrary channel allocation more many, namely the data volume ratio of this arbitrary network allocation is more big, on the contrary, the ratio value weighted sum determined is more little, namely the network condition of other network channels except this arbitrary network channel is more good, need the data volume for this arbitrary channel allocation more few, namely the data volume ratio of this arbitrary network allocation is more big.
Further, owing to the data volume ratio for this channel allocation has positively related relation with the ratio value determined, so, the coefficient between data volume ratio and the ratio value determined of this channel allocation can be defined as according to actual needs, it is defined as the data volume ratio of this channel allocation, or carry out the ratio value determined presetting computing to be defined as the data volume of this channel allocation, no matter how to carry out computing according to actual needs, as long as ensure that the data volume ratio for this channel allocation and the ratio value positive correlation determined.
Further, for two network channels, λ1It is characterized as the data volume of first network channel allocation, λ2It is characterized as the data volume of the second channel allocation, then, λ1And λ2Follow formula (4) and formula (5) respectively:
From formula (4), as the channel time delay t of the second network channel2More little, channel jitter j2More little, passage unit interval number of dropped packets k2More few, the network condition of the second network channel is more good, and the data volume for first network channel allocation is more few；Otherwise, as the channel time delay t of the second network channel2More big, channel jitter j2More big, passage unit interval number of dropped packets k2More many, the network condition of the second network channel is more poor, and the data volume for first network channel allocation is more many；It is to say, each desired value of the data volume of first network channel allocation and the second network channel accounts for the weighted sum positive correlation of the ratio value of overall performane value ratio；
From formula (5), as the channel time delay t of first network passage1More little, channel jitter j1More little, passage unit interval number of dropped packets k1More few, the network condition of first network passage is more good, is that the data volume of the second channel allocation is more few；Otherwise, as the channel time delay t of first network passage1More big, channel jitter j1More big, passage unit interval number of dropped packets k1More many, the network condition of first network passage is more poor, is that the data volume of the second channel allocation is more many；It is to say, each desired value of the data volume of the second channel allocation and first network passage accounts for the weighted sum positive correlation of the ratio value of overall performane value ratio.
Further, only for two network channels in this step, when being embodied as, can be extended to multiple network channel.
S211, according to the ratio determined in S210, the multi-medium data after coding is diverted to each passage and is transmitted.
Further, multi-medium data includes polytype, wherein video data is more special, video data by organizing key frame (I frame) and the P frame and the B frame that play out based on this I frame are constituted more, convenient I frame and the P frame and the B frame that play out based on this I frame are called a frame group to describe, if when for each channel allocation data volume, frame in one frame group is distributed to different network channels, then be likely to result in the P frame that sent by heterogeneous networks passage with corresponding I frame when video is played out by video data recipient and B frame cannot be play.
Therefore, in this step, when multi-medium data is video data, this step may be embodied as: for each I frame in video data, the P frame followed closely after this I frame and this I frame and B frame is defined as a frame group；With frame group for smallest allocation unit, according to the ratio determined, the video data after coding is diverted to each network channel and is transmitted.To ensure that each I frame and the P frame and the B frame that play out based on this I frame can both be transmitted by a network channel.
It is preferred that when for channel allocation data volume, should ensure that continuous print frame group is sent by different network channels as far as possible, to ensure when a certain network channel occurs congested, do not lose or mistake sends out continuous print frame group.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of terminal, owing to the principle of the solved problem of this terminal is similar to aforementioned a kind of multimedia data transmission method, therefore the enforcement of this terminal may refer to the enforcement of preceding method, repeats part and repeats no more.
A kind of terminal that the embodiment of the present invention provides, as it is shown on figure 3, include such as lower module:
Network status data determines module 301, for determining the desired value of each index characterizing tunnel condition on each network channel in terminal respectively；
Code check coefficient determination module 302, for for described each index, according to default statistical rules, it is determined that the value of statistical indicant of this index on described each network channel；And the value of statistical indicant according to the described each index determined, it is determined that the code check coefficient used when encoding for current multi-medium data to be encoded；
Coding module 303, for using the described code check system determined that current multi-medium data to be encoded is encoded；
Multi-medium data diverter module 304, for based on a determination that each desired value of described each network channel, it is determined that the multi-medium data after coding is distributed to described each network channel when sending, the data volume ratio that described each channel allocation arrives；According to the described ratio determined, the multi-medium data after coding is diverted to described each network channel and is transmitted.
Further, described code check coefficient determination module 302, specifically for at least one first pre-set level in each index characterizing tunnel condition, desired value best for sign network condition in the desired value of this first pre-set level of described each network channel being defined as the value of statistical indicant of this first pre-set level；For at least one second pre-set level in each index characterizing tunnel condition, the desired value of the sign network synthesis situation of the desired value of this second pre-set level of described each network channel is defined as the value of statistical indicant of this second pre-set level；And according to value of statistical indicant corresponding to the first pre-set level determined, value of statistical indicant that the second pre-set level is corresponding, and the default weight that described first pre-set level is corresponding respectively with described second pre-set level, it is determined that the weighted sum of each value of statistical indicant；Relation according to code check coefficient Yu the negative correlation of described weighted sum, it is determined that the code check coefficient used when encoding for current multi-medium data to be encoded.
Further, described multi-medium data diverter module 304, specifically for performing following steps respectively for each network channel in described each network channel: for each index in described each index, according to default amalgamation mode, determine in described each network channel other network channels except this network channel this index fusion after desired value, account for described each network channel this index fusion after the ratio of overall performane value；According to the default weight that described each index is corresponding respectively, it is determined that for the weighted sum of described each index ratio value of correspondence respectively that this network channel is determined；According to for the data volume ratio of this channel allocation and the positively related relation of ratio value weighted sum determined, it is determined that for the data volume ratio of this channel allocation.
Further, described multi-medium data diverter module 304, when being video data specifically for described multi-medium data, for each I frame in video data, this I frame and the P frame and the B frame that play out based on this I frame are defined as a frame group；With described frame group for smallest allocation unit, according to the described ratio determined, the video data after coding is diverted to described each network channel and is transmitted.
Further, described terminal, also include: matching module 305；
Described matching module 305, specifically at described multi-medium data diverter module 304 according to the described ratio determined, the multi-medium data after coding is diverted to before described each network channel is transmitted, matches for described each network channel in advance；
Described matching module 305, specifically for matching for described each network channel in the following way: judge whether described each network channel meets following condition, if meeting, then it is that described each network channel matches by MU-MIMO mechanism: described each network channel meets pre-set space insulated degree requirement between two；Described each network channel is satisfied by presetting SINR threshold requirement；Evaluate system spectral efficiency after described each network channel matches to promote to some extent compared with before pairing.
nullFurther，The one preferably embodiment of a kind of terminal that Fig. 4 provides for the embodiment of the present invention，For two network channels，Each module annexation is as shown in Figure 4，Communication module 401 can include multiple mixed-media network modules mixed-media (such as: multiple SIMs)，Each network channel can determine module by self network status data corresponding，First the network data of self is collected by the first network passage 402 in communication module 401，It is sent to first network status data and determines module 404，The network data of self is collected by the second network channel 403 in communication module 401，It is sent to the second network status data and determines module 405，First network status data determines that module 404 and the second network status data determine that the network data received is carried out statistical computation by module 405 respectively，Determine the desired value of each index of map network passage，And it is sent to multi-medium data diverter module 406，The desired value of first network passage 402 correspondence and the desired value of the second network channel 403 correspondence are all sent to code check coefficient determination module 407 by multi-medium data diverter module 406，The code check coefficient used when currently encoding is determined for multi-medium data by code check coefficient determination module 407，The code check coefficient determined is sent to coding module 408 by code check coefficient determination module 407，Making coding module 408 is that multi-medium data is encoded according to the code check coefficient received，When multi-medium data is more，Relief area 409 can also be set，Multi-medium data after coding can be stored in relief area 409 by coding module 408，Multi-medium data diverter module 406 obtains the multi-medium data after coding from relief area 409，And determine that module 404 and the second network status data determine the desired value that module 405 is determined respectively according to first network status data，It is defined as first network passage 402 and data volume ratio that the second network channel 403 is respectively allocated，According to this ratio, the multi-medium data after the coding obtained is divided，And be sent respectively to first network passage 402 and the second network channel 403 to core net send.
The function of above-mentioned each unit may correspond to the respective handling step in flow process shown in Fig. 1 to Fig. 2, does not repeat them here.
The beneficial effect of the embodiment of the present invention includes: a kind of multimedia data transmission method that the embodiment of the present invention provides, including: determine the desired value of each index characterizing tunnel condition on each network channel in terminal respectively；For described each index, according to default statistical rules, it is determined that the value of statistical indicant of this index on each network channel；And according to each indicator-specific statistics desired value determined, it is determined that the code check coefficient used when encoding for current multi-medium data to be encoded；Use the code check system determined that current multi-medium data to be encoded is encoded；Based on a determination that each desired value of each network channel, it is determined that the multi-medium data after coding is distributed to described each network channel when sending, the data volume ratio that each channel allocation arrives；According to the described ratio determined, the multi-medium data after coding is diverted to each passage and is transmitted.A kind of multimedia data transmission method that the embodiment of the present invention provides, network channel each with prior art can only independently according to prior art proposes based on compared with the multimedia data transmission method transmitting multimedia data of dynamic code rate, can according to the desired value of each index of the sign tunnel condition of multiple network channels, adjust the code check coefficient that multi-medium data is encoded in real time, and the desired value of each index according to the sign tunnel condition of multiple network channels, adjust the data volume ratio of multiple network tunnel transports multi-medium datas in real time, achieve and the multiple network channels in terminal are merged common transport multi-medium data, improve efficiency of transmission.
Through the above description of the embodiments, those skilled in the art is it can be understood that can realize by hardware to the embodiment of the present invention, it is also possible to the mode adding necessary general hardware platform by software realizes.Based on such understanding, the technical scheme of the embodiment of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, including some instructions with so that a computer equipment (can be personal computer, server, or the network equipment etc.) performs the method described in each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, module or flow process in accompanying drawing are not necessarily implemented necessary to the present invention.
It will be appreciated by those skilled in the art that the module in the device in embodiment can describe according to embodiment to carry out being distributed in the device of embodiment, it is also possible to carry out respective change and be disposed other than in one or more devices of the present embodiment.The module of above-described embodiment can merge into a module, it is also possible to is further split into multiple submodule.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Obviously, the present invention can be carried out various change and modification without deviating from the spirit and scope of the present invention by those skilled in the art.So, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (11)
1. a multimedia data transmission method, it is characterised in that including:
Determine the desired value of each index characterizing tunnel condition on each network channel in terminal respectively；
For described each index, according to default statistical rules, it is determined that the value of statistical indicant of this index on described each network channel；And
Value of statistical indicant according to the described each index determined, it is determined that the code check coefficient used when encoding for current multi-medium data to be encoded；
Use the described code check system determined that current multi-medium data to be encoded is encoded；
Based on a determination that each desired value of described each network channel, it is determined that the multi-medium data after coding is distributed to described each network channel when sending, the data volume ratio that described each channel allocation arrives；
According to the described ratio determined, the multi-medium data after coding is diverted to described each network channel and is transmitted.
2. the method for claim 1, it is characterised in that for described each index, according to default statistical rules, it is determined that the value of statistical indicant of this index on described each network channel, specifically includes:
For at least one first pre-set level in each index characterizing tunnel condition, desired value best for sign network condition in the desired value of this first pre-set level of described each network channel is defined as the value of statistical indicant of this first pre-set level；
For at least one second pre-set level in each index characterizing tunnel condition, the desired value of the sign network synthesis situation of the desired value of this second pre-set level of described each network channel is defined as the value of statistical indicant of this second pre-set level；
According to the described each indicator-specific statistics desired value determined, it is determined that the code check coefficient used when encoding for current multi-medium data to be encoded, specifically include:
According to value of statistical indicant corresponding to the first pre-set level determined, value of statistical indicant that the second pre-set level is corresponding, and the default weight that described first pre-set level is corresponding respectively with described second pre-set level, it is determined that the weighted sum of each value of statistical indicant；
Relation according to code check coefficient Yu the negative correlation of described weighted sum, it is determined that the code check coefficient used when encoding for current multi-medium data to be encoded.
3. the method for claim 1, it is characterized in that, based on a determination that each desired value of described each network channel, it is determined that the multi-medium data after coding is distributed to described each network channel when sending, the data volume ratio that described each channel allocation arrives, specifically includes:
Following steps are performed respectively for each network channel in described each network channel:
For each index in described each index, according to default amalgamation mode, determine in described each network channel other network channels except this network channel this index fusion after desired value, account for described each network channel this index fusion after the ratio of overall performane value；
According to the default weight that described each index is corresponding respectively, it is determined that for the weighted sum of described each index ratio value of correspondence respectively that this network channel is determined；
According to for the data volume ratio of this channel allocation and the positively related relation of ratio value weighted sum determined, it is determined that for the data volume ratio of this channel allocation.
4. the method for claim 1, it is characterised in that described multi-medium data is video data；
According to the described ratio determined, the multi-medium data after coding is diverted to described each network channel and is transmitted, specifically include:
For each I frame in video data, this I frame and the P frame and the B frame that play out based on this I frame are defined as a frame group；
With described frame group for smallest allocation unit, according to the described ratio determined, the video data after coding is diverted to described each network channel and is transmitted.
5. the method as described in any one of Claims 1 to 4, it is characterised in that according to the described ratio determined, is diverted to before described each network channel is transmitted by the multi-medium data after coding, and described method also includes:
Match for described each network channel in advance；
Wherein, match for described each network channel in the following way:
Judging whether described each network channel meets following condition, if meeting, being then that described each network channel matches by multi-user multiple input multiple output technology MU-MIMO mechanism:
Described each network channel meets pre-set space insulated degree requirement between two；
Described each network channel is satisfied by preset signals with interference plus noise than SINR threshold requirement；
Evaluate system spectral efficiency after described each network channel matches to promote to some extent compared with before pairing.
6. the method as described in any one of Claims 1 to 5, it is characterised in that the index characterizing tunnel condition includes: channel time delay, channel jitter and passage unit interval number of dropped packets.
7. a terminal, it is characterised in that including:
Network status data determines module, for determining the desired value of each index characterizing tunnel condition on each network channel in terminal respectively；
Code check coefficient determination module, for for described each index, according to default statistical rules, it is determined that the value of statistical indicant of this index on described each network channel；And the value of statistical indicant according to the described each index determined, it is determined that the code check coefficient used when encoding for current multi-medium data to be encoded；
Coding module, for using the described code check system determined that current multi-medium data to be encoded is encoded；
Multi-medium data diverter module, for based on a determination that each desired value of described each network channel, it is determined that the multi-medium data after coding is distributed to described each network channel when sending, the data volume ratio that described each channel allocation arrives；According to the described ratio determined, the multi-medium data after coding is diverted to described each network channel and is transmitted.
8. terminal as claimed in claim 7, it is characterized in that, described code check coefficient determination module, specifically for at least one first pre-set level in each index characterizing tunnel condition, desired value best for sign network condition in the desired value of this first pre-set level of described each network channel being defined as the value of statistical indicant of this first pre-set level；For at least one second pre-set level in each index characterizing tunnel condition, the desired value of the sign network synthesis situation of the desired value of this second pre-set level of described each network channel is defined as the value of statistical indicant of this second pre-set level；And according to value of statistical indicant corresponding to the first pre-set level determined, value of statistical indicant that the second pre-set level is corresponding, and the default weight that described first pre-set level is corresponding respectively with described second pre-set level, it is determined that the weighted sum of each value of statistical indicant；Relation according to code check coefficient Yu the negative correlation of described weighted sum, it is determined that the code check coefficient used when encoding for current multi-medium data to be encoded.
9. terminal as claimed in claim 7, it is characterized in that, described multi-medium data diverter module, specifically for performing following steps respectively for each network channel in described each network channel: for each index in described each index, according to default amalgamation mode, determine in described each network channel other network channels except this network channel this index fusion after desired value, account for described each network channel this index fusion after the ratio of overall performane value；According to the default weight that described each index is corresponding respectively, it is determined that for the weighted sum of described each index ratio value of correspondence respectively that this network channel is determined；According to for the data volume ratio of this channel allocation and the positively related relation of ratio value weighted sum determined, it is determined that for the data volume ratio of this channel allocation.
10. terminal as claimed in claim 7, it is characterized in that, described multi-medium data diverter module, when being video data specifically for described multi-medium data, for each I frame in video data, this I frame and the P frame and the B frame that play out based on this I frame are defined as a frame group；With described frame group for smallest allocation unit, according to the described ratio determined, the video data after coding is diverted to described each network channel and is transmitted.
11. the terminal as described in any one of claim 7～10, it is characterised in that also include: matching module；
Described matching module, specifically at described multi-medium data diverter module according to the described ratio determined, the multi-medium data after coding is diverted to before described each network channel is transmitted, matches for described each network channel in advance；
Described matching module, specifically for matching for described each network channel in the following way: judge whether described each network channel meets following condition, if meeting, then it is that described each network channel matches by multi-user multiple input multiple output technology MU-MIMO mechanism: described each network channel meets pre-set space insulated degree requirement between two；Described each network channel is satisfied by preset signals with interference plus noise than SINR threshold requirement；Evaluate system spectral efficiency after described each network channel matches to promote to some extent compared with before pairing.
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