CN105763289A - Data transmission device and method - Google Patents
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- CN105763289A CN105763289A CN201410784563.4A CN201410784563A CN105763289A CN 105763289 A CN105763289 A CN 105763289A CN 201410784563 A CN201410784563 A CN 201410784563A CN 105763289 A CN105763289 A CN 105763289A
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Abstract
The invention provides a data transmission device and method, and the device and method are used for transmitting data to a data receiving end from a data transmitting end, and are used in a first network and a second network. A first determining module determines a modulation coding mode of the first network, so as to obtain the current transmission rate V1 of the first network. A second determining module determines the modulation coding mode of the second network, so as to obtain the current transmission rate V2 of the second network. A comparison module compares the current transmission rate V1 and the current transmission rate V2. An execution module enables the data to be transmitted through the first network when V1 is greater than V2, and enables the data to be transmitted through the second network when V1 is less than V2. According to the invention, the device and method determine the modulation coding modes for different networks, so as obtain the current transmission rate of the corresponding network. The network with the larger current transmission rate is employed for data transmission, thereby improving the data transmission efficiency and quality.
Description
Technical field
The present invention relates to communication technical field, particularly to a kind of data transmission device and method.
Background technology
In the place that highly dense user exists, and in the simultaneous environment of multiple different type networks, environment such as, exists WiFi (Wireless-Fidelity simultaneously, Wireless Fidelity) network and WFD (Wireless-FidelityDirect, Wireless Fidelity is direct-connected) etc. network time, the reason such as interfere owing to there is load of network equipment restriction and signal, data are transmitted between user and user, particularly between user and user during transmitting audio-video data, the transmission path of the best is selected between subscriber equipment, extremely important to improve data transmission efficiency and quality.
Prior art does not account for load of network equipment restriction when selecting transmission path and signal such as interferes at the factor, and therefore data transmission efficiency is low, and data transmission quality is not high.
Summary of the invention
For solving the problems referred to above, the present invention provides a kind of data transmission device and method, can quickly select the optimal path that network transmits to improve data transmission efficiency and quality.
A kind of data transmission device provided by the invention, for data are transmitted to data receiver from data sending terminal, described device is applied in first network and the second network, described device includes: first determines module, is used for the modulation coding mode determining described first network to obtain the current transmission rate of described first network；Second determines module, is used for the modulation coding mode determining described second network to obtain the current transmission rate of described second network；Comparison module, is used for the current transmission rate of relatively described first network and the size of the current transmission rate of the second network；And execution module, for when the current transmission rate of described first network is more than the current transmission rate of the second network, by data by described first network from the transmission of described data sending terminal to described data receiver, when the current transmission rate of described second network is more than the current transmission rate of first network, by data by described second network from the transmission of described data sending terminal to described data receiver.
Preferably, described first network includes a WAP and the multiple nodes with the communication connection of one WAP, and described first determines that module specifically includes for the modulation coding mode determining described first network: obtained the snr value of described WAP by described first network；Obtain the snr value of the relatively each node of described WAP；And the snr value according to relatively each node of described WAP determines the modulation coding mode that described first network is corresponding.
Preferably, described device also includes detecting module, is used for detecting whether described first network asks modulation coding mode to be demoted, is, described first determines that module reacquires the snr value of described WAP to update the modulation coding mode of described first network.
Preferably, described second network is wireless point-to-point directly-connected network, and described second determines that module specifically includes for the modulation coding mode determining described second network: by the snr value of data sending terminal described in described second Network Capture；And the snr value according to described data sending terminal determines the modulation coding mode that described second network is corresponding.
Preferably, described device also includes detecting module, is used for detecting whether described second network asks modulation coding mode to be demoted, is, described second determines that module reacquires the snr value of described data sending terminal to update the modulation coding mode of described second network.
The present invention also provides for a kind of data transmission method, and for data being transmitted to data receiver from data sending terminal, described data transmission method is applied in first network and the second network, and described method includes step: determine the modulation coding mode of described first network；Obtain the current transmission rate of described first network；Determine the modulation coding mode of described second network；Obtain the current transmission rate of described second network；Compare the current transmission rate of described first network and the size of the current transmission rate of described second network；When the current transmission rate of described first network is more than the current transmission rate of described second network, by data by described first network from the transmission of described data sending terminal to described data receiver；And when the current transmission rate of described second network is more than the current transmission rate of described first network, by data by described second network from the transmission of described data sending terminal to described data receiver.
Preferably, described first network includes a WAP and the multiple nodes with the communication connection of one WAP, and the step of the described modulation coding mode determining described first network specifically includes step: obtained the snr value of described WAP by described first network；Obtain the snr value of relatively each node of described WAP；And the snr value according to relatively each node of described WAP determines the modulation coding mode that described first network is corresponding.
Preferably, described by data by described first network from described data sending terminal transmission to described data receiver step after further comprise the steps of: detecting described first network whether ask modulation coding mode demote, be back to step: by described first network acquisition described WAP snr value.
Preferably, described second network is wireless point-to-point directly-connected network, and the step of the described modulation coding mode determining described second network specifically includes step: by the signal to noise ratio of data sending terminal described in described second Network Capture；And the signal to noise ratio according to described data sending terminal determines the modulation coding mode that described first network is corresponding.
Preferably, described by data by described second network from described data sending terminal transmission to described data receiver step after further comprise the steps of: detecting described second network whether ask modulation coding mode to be demoted, be back to step: by the signal to noise ratio of data sending terminal described in described second Network Capture.
The present invention provides the device and method that a kind of data are transmitted, it is determined by the modulation coding mode of heterogeneous networks to obtain map network current transmission rate, the network selecting current transmission rate bigger carries out data transmission, and improves data transmission efficiency and data transmission quality.
Accompanying drawing explanation
Fig. 1 is the system environments figure of data transmission device and method in an embodiment of the present invention.
Fig. 2 is data transmission device structural representation in an embodiment of the present invention.
Fig. 3 is data transmission device structural representation in another embodiment of the present invention.
Fig. 4 is data transmission method flow chart in an embodiment of the present invention.
Fig. 5 is the method flow diagram of the modulation coding mode determining described first network in Fig. 3.
Fig. 6 is the method flow diagram of the modulation coding mode determining described second network in Fig. 3.
Fig. 7 is data transmission method flow chart one in another embodiment of the present invention.
Fig. 8 is data transmission method flowchart 2 in another embodiment of the present invention.
Main element symbol description
| Data sending terminal | 10 |
| Data receiver | 20 |
| Transmitting device | 30 |
| First determines module | 31 |
| Second determines module | 32 |
| Comparison module | 33 |
| Perform module | 34 |
| Detecting module | 35 |
| WAP | 40 |
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
Below in conjunction with accompanying drawing, the data transmission device in the present invention and method are described in further detail.
Refer to Fig. 1, it is the system environments figure of the data transmission device 30 in one embodiment of the invention and method, the data transmission device 30 of the embodiment of the present invention, rear title transmitting device 30, for being used for transmitting to data receiver 20 data from data sending terminal 10, described transmitting device 30 is applied in first network and the second network.In the present embodiment, transmitting device integrate with data receiver 20 in exist as self-contained unit, in other embodiments of the invention, transmitting device 30 also can integrate with in data sending terminal 10.In the present embodiment, first network is WIFI network, first network sets up data sending terminal 10 and the data transfer path of data receiver 20 by WAP 40, second network is WFD network, and the second network sets up the wireless point-to-point direct access path of data sending terminal 10 and data receiver 20.In other embodiments of the invention, the second network can also be the network of other point-to-point types such as blueteeth network.In the present embodiment, data sending terminal 10 is smart mobile phone, data receiver 20 is intelligent television, in other embodiments of the invention, data sending terminal 10 and data receiver 20 can respectively other same types or the different types of network equipments, include but not limited to smart mobile phone and intelligent television, for instance panel computer etc..
Refer to Fig. 2, transmitting device include first determine module 31, second determine module 32, comparison module 33 and perform module 34.
First determines that module 31 is for determining that the modulation coding mode of described first network is to obtain the current transmission rate V1 of described first network.Second determines module 32, is used for the modulation coding mode determining described second network to obtain the current transmission rate V2 of described second network.
The data transmission code rate of modulation coding mode of same order is corresponding this network correspondence different stage and efficiency, the modulation coding mode being determined by heterogeneous networks can obtain the message transmission rate that this network is currently theoretical.
Comparison module 33 is for the size of relatively described V1 and V2, perform module 34 for when described V1 is more than V2, data are transmitted to described data receiver 20 from described data sending terminal 10 by described first network, when described V2 is more than V1, data are transmitted to described data receiver 20 from described data sending terminal 10 by described second network.
Please also refer to Fig. 1, in the present embodiment, described first network specifically includes a WAP 40 and the N number of node with one WAP 40 communication connection.
First determines that module 31 determines that the modulation coding mode of described first network specifically includes with the current transmission rate V1 obtaining described first network: obtained the snr value SNR1 of described WAP 40 by described first network, then the snr value SNR ' of relatively each node of described WAP 40, wherein SNR '=SNR1/ (N+2) are obtained.
The snr value SNR ' of the relatively each node according to described WAP 40 determines the modulation coding mode that described first network is corresponding.
In the present embodiment, described second determines that module 32 specifically includes with the current transmission rate V2 obtaining described second network for the modulation coding mode determining described second network: by the snr value SNR2 of data sending terminal 10 described in described second Network Capture.
Snr value SNR2 according to described data sending terminal 10 determines the modulation coding mode that described second network is corresponding.
By the signal to noise ratio that Measurement Network equipment is current, the channel conditions being transmitted data by this network equipment can be obtained, different snr values represents different channel qualities, so that it is determined that the modulation coding mode of correspondence, for instance decode-regulating mode corresponding to the different channels credit rating that provides in TS36.213 standard, code check, efficiency.
In the present embodiment, owing to first network existing N number of node, then actually first network includes data sending terminal 10 and data receiver 20 has N+2 user, therefore average principle is adopted to calculate relatively each node signal to noise ratio snr of the corresponding user of WAP 40 ', to assess the relative load situation of WAP 40, thus decreasing error, overcome theoretical transmission rate difference between actual delivery rate.
Refer to Fig. 3, in another embodiment of the invention, transmitting device also includes detecting module 35, for detecting whether described first network asks modulation coding mode to be demoted, it is that described first determines that module 31 reacquires the snr value SNR1 of described WAP 40 to update the modulation coding mode of described first network.
In this embodiment, described detecting module 35 is additionally operable to, and described second determines that module 32 reacquires the snr value SNR2 of described data sending terminal 10 to update the modulation coding mode of described second network.
In data transmission procedure, if the modulation coding mode downgrade request of network, for instance the node users of video format change or first network increases, and compares in real time and reaches data transmission rate with previous, it may be judged whether need to attempt toggle path.
Refer to Fig. 4, one embodiment of the invention also provides for a kind of data transmission method, including step:
S100: the first determines that module 31 determines the modulation coding mode of described first network.
S200: the first determines that module 31 obtains the current transmission rate V1 of described first network.
S300: the second determines that module 32 determines the modulation coding mode of described second network；
S400: the second determines that module 32 obtains the current transmission rate V2 of described second network.
S500: the size of comparison module 33 relatively described V1 and V2.
S600: perform module 34 when described V1 is more than V2, data are transmitted to described data receiver 20 from described data sending terminal 10 by described first network.
S700: perform module 34 when described V2 is more than V1, data are transmitted to described data receiver 20 from described data sending terminal 10 by described second network.
Wherein, step S100, S200 and step S300, S400 does not have sequencing relation, namely first determines that module 31 also can first carry out step S100, S200, second determines that module 32 performs step S300 again, S400, or second determines that module 32 also can first carry out step S300, S400, first determines that module 31 performs step S100 again, S200, or, first determines that module 31 and second determines that module 32 performs step S100 respectively simultaneously, S200 and step S300, S400, first determines that module 31 and second determines that the module that module 32 is relatively independent is independently operated.
The data transmission code rate of modulation coding mode of same order is corresponding this network correspondence different stage and efficiency, the modulation coding mode being determined by heterogeneous networks can obtain the message transmission rate that this network is currently theoretical.
Refer to Fig. 5 and Fig. 1, in the present embodiment, described first network specifically includes a WAP 40 and the N number of node with one WAP 40 communication connection.
Step S100: the first determines that module 31 determines that the modulation coding mode of described first network specifically includes step:
S101: the first determines that module 31 obtains the snr value SNR1 of described WAP 40 by described first network.
S102: the first determines that module 31 obtains snr value SNR ', the SNR of relatively each node of described WAP 40 '=SNR1/ (N+2).
S103: the first determines that module 31 determines, according to the snr value SNR ' of relatively each node of described WAP 40, the modulation coding mode that described first network is corresponding.
Refer to Fig. 6, in the present embodiment, step S300: the second determines that module 32 determines that the modulation coding mode of described second network specifically includes step:
S301: the second determines the module 32 signal to noise ratio snr 2 by data sending terminal 10 described in described second Network Capture.
S302: the second determines that module 32 determines, according to the signal to noise ratio snr 2 of described data sending terminal 10, the modulation coding mode that described first network is corresponding.
By the signal to noise ratio that Measurement Network equipment is current, the channel conditions being transmitted data by this network equipment can be obtained, different snr values represents different channel qualities, so that it is determined that the modulation coding mode of correspondence, for instance decode-regulating mode corresponding to the different channels credit rating that provides in TS36.213 standard, code check, efficiency.
In the present embodiment, owing to first network existing N number of node, then actually first network includes data sending terminal 10 and data receiver 20 has N+2 user, therefore average principle is adopted to calculate relatively each node signal to noise ratio snr of the corresponding user of WAP 40 ', to assess the relative load situation of WAP 40, thus decreasing error, overcome theoretical transmission rate difference between actual delivery rate.
Refer to Fig. 7, step S600: when described V1 is more than V2, perform module 34 and data are transmitted from described data sending terminal 10 by described first network further comprise the steps of: after described data receiver 20
S800: detecting module 35 detects whether described first network asks modulation coding mode to be demoted, and is be back to step S101, otherwise continues to detect whether described first network asks modulation coding mode to be demoted.
Refer to Fig. 8, step S700: when described V2 is more than V1, perform module 34 and data are transmitted from described data sending terminal 10 by described second network further comprise the steps of: after described data receiver 20
S900: detecting module 35 detects whether described second network asks modulation coding mode to be demoted, and is be back to step S301, otherwise continues to detect whether described second network asks modulation coding mode to be demoted.
In data transmission procedure, if the modulation coding mode downgrade request of network, for instance the node users of video format change or first network increases, and compares in real time and reaches data transmission rate with previous, it may be judged whether need to attempt toggle path.
The present invention provides a kind of data transmission device 30 and method, it is determined by the modulation coding mode of heterogeneous networks to obtain map network current transmission rate, the network selecting current transmission rate bigger carries out data transmission, and improves data transmission efficiency and data transmission quality.And when change of network environment, transfer rate relatively more current in time and original transfer rate size, redirected between the different networks by comparative result, it is possible to quickly selects currently most transmission path, achieve the Path selection of plain type, it is provided that repeatedly judge the feasibility selected.
Those skilled in the art will be appreciated that; embodiment above is intended merely to the explanation present invention; and it is not used as limitation of the invention; as long as within the spirit of the present invention, embodiment of above is made suitably change and change all drops within the scope of protection of present invention.
Claims (10)
1. a data transmission device, for data being transmitted to data receiver from data sending terminal, described device is applied in first network and the second network, it is characterised in that described device includes:
First determines module, is used for the modulation coding mode determining described first network to obtain the current transmission rate of described first network；
Second determines module, is used for the modulation coding mode determining described second network to obtain the current transmission rate of described second network；
Comparison module, is used for the current transmission rate of relatively described first network and the size of the current transmission rate of the second network；And
Perform module, for when the current transmission rate of described first network is more than the current transmission rate of the second network, by data by described first network from the transmission of described data sending terminal to described data receiver, when the current transmission rate of described second network is more than the current transmission rate of first network, by data by described second network from the transmission of described data sending terminal to described data receiver.
2. device as claimed in claim 1, it is characterized in that, described first network includes a WAP and the multiple nodes with the communication connection of one WAP, and described first determines that module specifically includes for the modulation coding mode determining described first network:
The snr value of described WAP is obtained by described first network；
Obtain the snr value of the relatively each node of described WAP；And
The snr value of the relatively each node according to described WAP determines the modulation coding mode that described first network is corresponding.
3. device as claimed in claim 2, it is characterized in that, described device also includes detecting module, for detecting whether described first network asks modulation coding mode to be demoted, it is that described first determines that module reacquires the snr value of described WAP to update the modulation coding mode of described first network.
4. device as claimed in claim 1, it is characterised in that described second network is wireless point-to-point directly-connected network, and described second determines that module specifically includes for the modulation coding mode determining described second network:
Snr value by data sending terminal described in described second Network Capture；And
Snr value according to described data sending terminal determines the modulation coding mode that described second network is corresponding.
5. device as claimed in claim 4, it is characterized in that, described device also includes detecting module, for detecting whether described second network asks modulation coding mode to be demoted, it is that described second determines that module reacquires the snr value of described data sending terminal to update the modulation coding mode of described second network.
6. a data transmission method, for data being transmitted to data receiver from data sending terminal, described data transmission method is applied in first network and the second network, it is characterised in that described method includes step:
Determine the modulation coding mode of described first network；
Obtain the current transmission rate of described first network；
Determine the modulation coding mode of described second network；
Obtain the current transmission rate of described second network；
Compare the current transmission rate of described first network and the size of the current transmission rate of described second network；
When the current transmission rate of described first network is more than the current transmission rate of described second network, by data by described first network from the transmission of described data sending terminal to described data receiver；And
When the current transmission rate of described second network is more than the current transmission rate of described first network, by data by described second network from the transmission of described data sending terminal to described data receiver.
7. method as claimed in claim 6, it is characterized in that, described first network includes a WAP and the multiple nodes with the communication connection of one WAP, and the step of the described modulation coding mode determining described first network specifically includes step:
The snr value of described WAP is obtained by described first network；
Obtain the snr value of relatively each node of described WAP；And
The snr value of the relatively each node according to described WAP determines the modulation coding mode that described first network is corresponding.
8. as claimed in claim 7 method, it is characterised in that further comprise the steps of: after the described step that data are transmitted to described data receiver from described data sending terminal by described first network
Detect whether described first network asks modulation coding mode to be demoted, be back to step: obtained the snr value of described WAP by described first network.
9. method as claimed in claim 6, it is characterised in that described second network is wireless point-to-point directly-connected network, and the step of the described modulation coding mode determining described second network specifically includes step:
Signal to noise ratio by data sending terminal described in described second Network Capture；And
Signal to noise ratio according to described data sending terminal determines the modulation coding mode that described first network is corresponding.
10. method as claimed in claim 9, it is characterised in that further comprise the steps of: after the described step that data are transmitted to described data receiver from described data sending terminal by described second network
Detect whether described second network asks modulation coding mode to be demoted, be back to step: by the signal to noise ratio of data sending terminal described in described second Network Capture.
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Application publication date: 20160713 |