CN103297191B - It is automatically adjusted collecting method and the data collecting system of wireless transmission rate - Google Patents
It is automatically adjusted collecting method and the data collecting system of wireless transmission rate Download PDFInfo
- Publication number
- CN103297191B CN103297191B CN201310191436.9A CN201310191436A CN103297191B CN 103297191 B CN103297191 B CN 103297191B CN 201310191436 A CN201310191436 A CN 201310191436A CN 103297191 B CN103297191 B CN 103297191B
- Authority
- CN
- China
- Prior art keywords
- signal
- noise ratio
- wireless transmission
- bandwidth
- transmission channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 164
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000012544 monitoring process Methods 0.000 claims abstract description 55
- 230000003044 adaptive effect Effects 0.000 claims description 21
- 238000012546 transfer Methods 0.000 claims description 21
- 230000006978 adaptation Effects 0.000 claims description 20
- 230000008859 change Effects 0.000 claims description 14
- 238000012360 testing method Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 7
- 230000033228 biological regulation Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 description 6
- 238000001914 filtration Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention provides a kind of collecting method being automatically adjusted wireless transmission rate and data collecting system, and wherein, described method includes: obtain the bandwidth that the wireless transmission channel of transmission collection data is current；The bandwidth current according to described wireless transmission channel and the bandwidth ratio for being respectively configured for one or more data acquisition units of data acquisition recapture the maximum acquisition rate taking each data acquisition unit；Maximum acquisition rate according to each data acquisition unit adjusts the transmission that each data acquisition unit is gathered data by described wireless transmission channel.The present invention is by the monitoring of signal to noise ratio in wireless transmission channel, to determine current channel width, thus according to the bandwidth of present channel, adjusts the acquisition rate of data acquisition unit to adapt to current channel quality and bandwidth.
Description
Technical field
The present invention relates to communication field, particularly relate to a kind of collecting method being automatically adjusted wireless transmission rate and number
According to acquisition system.
Background technology
Along with the development of information technology, network has become a part for people's daily life and work, and therefore, people are to net
The demand of network peripheral hardware also gets more and more, such as, and various video camera apparatus, speech ciphering equipment etc..At present, network shooting equipment should
With the most quite varied, by picture pick-up device by the various view data photographed or the various video datas of recording, pass through network
Pass to other-end, bring great convenience, and well Consumer's Experience to user.
Network shooting equipment can communicate with other equipment by the way of wired, it is also possible to wirelessly
Communicate with other equipment.For existing wire communication, bandwidth is the most more stable, and can ensure that more high-quality
The real-time video of amount or the normal transmission of image, and for radio communication, there is undulatory property in quality of wireless channel, when wireless
The when that deteriorating occurring in channel quality, it is impossible to ensure that the video of equipment real-time Transmission or image are transmitted with initial quality.
And, it is most likely that occur causing the long-pending increasing of whole wireless communication system flow for the moment owing to the transfer rate of equipment is higher,
Even cause the situation of the collapse of whole wireless link.
At present, some camera head comprises the function being automatically adjusted transfer rate, but is typically to weigh biography with packet loss
The quality of transmission link quality, then the transfer rate of equipment is adjusted correspondingly.But, packet loss sometimes can not be completely
Reflecting the real conditions of data transmission link, because causing the reason of packet loss, may be not only due to link quality
Decline, it is also possible to be to be affected by factors such as data-handling capacities.
Summary of the invention
A kind of collecting method being automatically adjusted wireless transmission rate of offer and data are provided
Acquisition system is higher and cause whole wireless communication system for the moment to solve the transfer rate due to equipment that prior art exists
Flow long-pending increase, in some instances it may even be possible to the problem causing the collapse of whole wireless link.
The collecting method being automatically adjusted wireless transmission rate that the present invention provides includes: obtains transmission and gathers data
The bandwidth that wireless transmission channel is current；The bandwidth current according to described wireless transmission channel and be for one of data acquisition or
The bandwidth ratio that multiple data acquisition units are respectively configured recaptures the maximum acquisition rate taking each data acquisition unit；According to each data
The maximum acquisition rate of harvester adjusts the transmission that each data acquisition unit is gathered data by described wireless transmission channel.
Further, obtain the bandwidth that described wireless transmission channel is current, including: the signal to noise ratio of configuration wireless transmission channel
The interval corresponding relation with bandwidth；The signal to noise ratio of the wireless transmission channel that transmission gathers data is monitored, according to described letter
The signal to noise ratio more corresponding than detection of making an uproar is interval, is wirelessly transferred described in the corresponding relation acquisition of bandwidth in conjunction with described signal to noise ratio interval
The bandwidth that channel is current.
Further, the interval corresponding relation with bandwidth of signal to noise ratio of configuration wireless transmission channel, including: surveyed by system
Examination obtains the described wireless transmission channel one or more signal to noise ratios under different channels quality and corresponding adaptive described
Wireless transmission channel transmits the modulation coding mode of signal, thus obtains the modulating-coding that different signal to noise ratios is interval with adaptive
The corresponding relation of mode；Obtain the bandwidth of the described wireless transmission channel adapted according to each modulation coding mode, thus build
Vertical different signal to noise ratio interval and adaptive modulation coding mode and the corresponding relation of the bandwidth of described wireless transmission channel.
Further, the signal to noise ratio of the wireless transmission channel that transmission gathers data is monitored, according to described signal to noise ratio
The signal to noise ratio interval that detection is corresponding, corresponding relation with bandwidth interval in conjunction with described signal to noise ratio obtains described wireless transmission channel
Current bandwidth, including: in real time or the signal to noise ratio of wireless transmission channel described in cycle monitoring, and judge that the signal to noise ratio monitored is
No in the signal to noise ratio interval corresponding to currently used modulation coding mode；When the described signal to noise ratio monitored currently does not makes
The signal to noise ratio interval corresponding to modulation coding mode time, current modulation coding mode is changed to residing for described signal to noise ratio
The modulation coding mode that signal to noise ratio interval is corresponding, and the described wireless biography adapted is obtained according to the modulation coding mode after change
The bandwidth of defeated channel.
Further, send the rate adaptation message carrying described maximum acquisition rate to each data acquisition unit, thus
Make described data acquisition unit send correspondence according to the regulation of described rate adaptation message and gather the maximum acquisition rate of data.
For solving the problems referred to above, the present invention also provides for a kind of wireless transmitter, with one or more data acquisition unit phases
Connect, including: wireless sending module, for the collection data that each data acquisition unit received is sent, according to every number
It is transmitted by wireless transmission channel according to the corresponding maximum acquisition rate of harvester；Channel quality monitoring means, is used for obtaining
The bandwidth that described wireless transmission channel is current；Transfer rate control unit, for the band current according to described wireless transmission channel
Bandwidth ratio that is wide and that be respectively configured for the one or more data acquisition unit recaptures the maximum collection taking each data acquisition unit
Speed, and described maximum acquisition rate is sent to corresponding data acquisition unit so that corresponding data acquisition unit adjust each to
Described wireless sending module sends the maximum acquisition rate of described collection data.
Further, described channel quality monitoring means, it is further used for: the signal to noise ratio of configuration wireless transmission channel is interval
Corresponding relation with bandwidth；The signal to noise ratio of the wireless transmission channel that transmission gathers data is monitored, according to described signal to noise ratio
The signal to noise ratio interval that detection is corresponding, corresponding relation with bandwidth interval in conjunction with described signal to noise ratio obtains described wireless transmission channel
Current bandwidth.
Further, described channel quality monitoring means, be further used for: by system test obtain described in be wirelessly transferred
The channel one or more signal to noise ratios under different channels quality and corresponding adaptive transmitting in described wireless transmission channel thereof
The modulation coding mode of signal, thus obtain the corresponding relation of interval with the adaptive modulation coding mode of different signal to noise ratios；Root
Obtain the bandwidth of the described wireless transmission channel adapted according to each modulation coding mode, thus it is interval to set up different signal to noise ratios
With adaptive modulation coding mode and the corresponding relation of the bandwidth of described wireless transmission channel.
Further, described channel quality monitoring means, it is further used for: in real time or be wirelessly transferred letter described in cycle monitoring
The signal to noise ratio in road, and judge that the signal to noise ratio monitored is the most interval in the signal to noise ratio corresponding to currently used modulation coding mode
In；When the described signal to noise ratio monitored is not or not the signal to noise ratio interval corresponding to currently used modulation coding mode, will be current
Modulation coding mode changes to the modulation coding mode that the signal to noise ratio interval residing for described signal to noise ratio is corresponding, and according to change after
Modulation coding mode obtains the bandwidth of the described wireless transmission channel adapted.
Further, described transfer rate control unit is further used for: send to each data acquisition unit described in carrying
The rate adaptation message of maximum acquisition rate, so that described data acquisition unit is right according to the adjustment transmission of described rate adaptation message
The maximum acquisition rate of data should be gathered.
For solving the problems referred to above, present invention also offers a kind of data collecting system, including: wireless receiving and dispatching as above
Device and the one or more data acquisition units being connected with described wireless transmitter respectively, wherein, described data acquisition unit,
Farther include: data transmission unit, be used for capturing collection data and being transferred to described wireless transmitter being transmitted；And
Transfer rate adjustment unit, the rate adaptation sent for receiving the transfer rate control unit of described wireless transmitter disappears
Breath, and according to described rate adaptation message, the maximum acquisition rate of described data transmission unit is set to described rate adaptation and disappears
The maximum acquisition rate carried in breath.
Compared with prior art, the technique effect that the present invention is obtained:
(1) by real-time or that cycle monitoring wireless transmission channel is current signal to noise ratio, described wireless transmission channel is determined
Current signal is the most suitable with current modulation coding mode, is wirelessly transferred such that it is able to adjust according to current signal to noise ratio
Modulation coding mode in channel, to well adapt to channel quality.
(2) signal to noise ratio obtained according to real-time or cycle monitoring adjusts the modulation coding mode in wireless transmission channel with really
Channel width before settled, such that it is able to according to current channel width, adjust the acquisition rate of data acquisition unit, to adapt to work as
Before channel quality and bandwidth, it is to avoid because during the transmission of one or more equipment, speed is too high and channel quality is relatively low, cause
The phenomenon that in wireless transmission channel, the surge of a certain time data is even collapsed.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this
Bright schematic description and description is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of the collecting method being automatically adjusted wireless transmission rate that the present invention relates to；
Fig. 2 is the flow chart of one embodiment of the invention；
Fig. 3 is the schematic diagram of the wireless transmitter of the present invention；
Fig. 4 is the schematic diagram of the data collecting system of the present invention.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with drawings and the specific embodiments, to this
Invention is described in further detail.
The main thought of the present invention is, by monitoring the signal to noise ratio of wireless transmission channel in real time, it is thus achieved that described
The bandwidth that wireless channel is current, so that it is determined that the one or more data acquisition units in described wireless transmission channel are described wireless
The maximum acquisition rate of transmission collection data in transmission channel, and adjust the maximum acquisition rate of described data acquisition unit, thus
Each data acquisition unit can be made to gather data with relatively rational transfer rate transmission.Described acquisition rate, refers to data acquisition
Storage sends the speed gathering data to wireless transmitter, and what data acquisition unit can be sent by described wireless transmitter adopts
Collection data are transmitted by wireless transmission channel.
As it is shown in figure 1, the method comprise the steps that step S1, the wireless transmission channel obtaining transmission collection data is current
Bandwidth；Step S2, the bandwidth current according to described wireless transmission channel and be the one or more data for data acquisition
The bandwidth ratio that harvester is respectively configured recaptures the maximum acquisition rate taking each data acquisition unit；Step S3, according to each data
The maximum acquisition rate of harvester adjusts the transmission that each data acquisition unit is gathered data by described wireless transmission channel.
With an embodiment, the method for the present invention is described in detail below, in the present embodiment, step S101-
S107 correspondence step S1, step S108 correspondence step S2, step S109 correspondence step S3, as it is shown in figure 1, the step of this embodiment
Including:
Step S101, obtains, by system test, the modulation that the different signal to noise ratio of described wireless transmission channel is interval with adaptive
The corresponding relation of coded system.
In wireless transmission channel, for the signal to noise ratio that certain is given, the signal to noise ratio residing for this signal to noise ratio can be mated for it
Optimal modulation coding mode corresponding to interval, it is also possible to think, different modulation coding modes accommodates different noises
Than interval, this corresponding relation depends on system performance, and the optimal modulation that in different systems, signal to noise ratio interval is corresponding is compiled
Code mode is the most identical.Therefore, it can obtain in current radio transmission system by system test, described wireless transmission channel
One or more signal to noise ratios under different channels quality and corresponding adaptive transmission signal in described wireless transmission channel thereof
Modulation coding mode, thus obtain the corresponding relation of interval with the adaptive modulation coding mode of different signal to noise ratio；Wherein, it is
Unified test examination refers to by radio frequency testing and combines the test that Current wireless communication system is carried out by physical layer simulation algorithm, obtains nothing
The line transmission channel one or more signal to noise ratios under different channels quality and corresponding adaptive at described wireless transmission channel
The modulation coding mode of middle transmission signal, thus, obtain the corresponding of interval with the adaptive modulation coding mode of different signal to noise ratios
Relation.
Step S102, obtains the bandwidth of the described wireless transmission channel adapted according to each modulation coding mode.
In wireless transmission channel, modulation coding mode is also corresponding relation with the bandwidth of channel, and corresponding relation depends on respectively
System performance, in same system, various coded systems have its fixing corresponding channel width.Therefore, can be according to each modulation
Coded system obtains the bandwidth of the described wireless transmission channel adapted.
Step S103, sets up interval with the adaptive modulation coding mode of different signal to noise ratio and described wireless transmission channel
The corresponding relation of bandwidth.
Signal to noise ratio interval and the modulating-coding in wireless transmission channel in wireless transmission channel is obtained by step S101-S102
The corresponding relation of mode and modulation coding mode and the corresponding relation of channel width, just can obtain believing in wireless transmission channel
Making an uproar the ratio indirect corresponding relation with bandwidth, such as, table 1 is that signal to noise ratio is interval with modulating-coding side in a certain wireless transmitting system
Formula and the mapping table of channel width, only list signal to noise ratio interval corresponding to partial modulation coded system and channel strip in table
Wide corresponding relation, and, in following mapping table, the numerical intervals of signal to noise ratio is corresponding with modulation coding mode to close
The corresponding relation of the numerical value of system and modulation coding mode and bandwidth, for obtain under same system, this corresponding relation because of
The difference of system and different.
| Signal to noise ratio (dB) | Modulation coding mode | Bandwidth (Mbps) |
| 0-5 | BPSK1/2 | 6.67 |
| 5-7 | BPSK3/4 | 10.00 |
| 7-10 | QPSK1/2 | 13.34 |
| 10-13 | QPSK3/4 | 20.01 |
| 13-15 | 16QAM1/2 | 26.68 |
| 15-～ | 16QAM3/4 | 40.02 |
Table 1
Step S104, in real time or the current signal to noise ratio of wireless transmission channel described in cycle monitoring.
In wireless transmissions, often there is fluctuation in channel quality, and the signal to noise ratio in channel also can change in the moment,
Therefore, carry out signal to noise ratio in real time or periodically monitoring, in order to obtain the real-time channel quality in channel or in a period of time
Channel quality.
Signal to noise ratio is monitored in real time, it is simply that obtain the numerical value of current signal to noise ratio in real time, and in step S105, sentence
Whether the numerical value of the disconnected current signal real-time monitored is in the signal to noise ratio district corresponding to currently used modulation coding mode
In.Such as, it is 3dB when monitoring obtains current real-time signal to noise ratio, then in step S105, it is judged that current signal 3dB is
In the no signal to noise ratio interval being in corresponding to currently used modulation coding mode.
Signal to noise ratio is periodically monitored, in simple terms, monitoring and two processes of filtering can be divided into, monitor process
In, within the monitoring cycle, at predetermined time intervals, the signal to noise ratio of channel is once monitored, obtain the true letter of current time
Making an uproar ratio, the described monitoring cycle can set as the case may be, such as, be set as 1 second, 5 seconds etc..In filtering, by upper one
The true signal to noise ratio that secondary calculated calculating signal to noise ratio and this monitoring obtain, is added according to predetermined proportion, the numerical value obtained
Calculating signal to noise ratio as this；Using last for this cycle calculated calculating signal to noise ratio as the letter in the currently monitored cycle
Make an uproar ratio.Above-mentioned monitoring process and filtering can synchronize to carry out, i.e. the most once monitor, the most once calculate；Also
After the monitoring process in a cycle terminates, then process can be filtered.
In filtering, the calculating signal to noise ratio of this monitoring can be calculated by formula (1)；
SNR ' (t)=a × SNR (t)+(1-a) × SNR ' (t-Δ t) (1)
Wherein, Δ t represents that each Δ t time once monitors；SNR (t) represents current time t, and it is true that monitoring obtains
Real signal to noise ratio；SNR ' (t) represents the calculating signal to noise ratio of calculated current time t；SNR ' (t-Δ t)) represents moment (t-Δ
T) calculating signal to noise ratio, i.e. during last monitoring, calculated calculating signal to noise ratio；A represents current time t, and this is monitored
To the proportion shared in the calculating signal to noise ratio of current time of true signal to noise ratio；(1-a) represent that (t-Δ t) calculates previous moment
The calculating signal to noise ratio snr ' (proportion that t-Δ t) is shared in calculating signal to noise ratio snr ' (t) of current time t obtained；
Give one example below and illustrate:
Assuming that with 5 seconds be a monitoring cycle, carried out the monitoring of a signal to noise ratio every 1 second, a value is set to 0.9, and according to
Formula (1) obtains:
During 1s, monitoring obtains true signal to noise ratio is 1dB, corresponding calculating signal to noise ratio snr '=1 × 0.9+0 × 0.1=0.9dB
During 2s, monitoring obtains true signal to noise ratio is 2dB, corresponding calculating signal to noise ratio snr '=2 × 0.9+0.9 × 0.1=
1.89dB；
During 3s, monitoring obtains true signal to noise ratio is 3dB, corresponding calculating signal to noise ratio snr '=3 × 0.9+1.89 × 0.1=
2.889dB；
During 4s, monitoring obtains true signal to noise ratio is 1dB, corresponding calculating signal to noise ratio snr '=1 × 0.9+2.889 × 0.1=
1.1889dB；
During 5s, monitoring obtains true signal to noise ratio is 2dB, corresponding calculating signal to noise ratio snr '=2 × 0.9+1.1889 × 0.1=
1.91889dB；
Therefore, using calculating signal to noise ratio 1.91889dB corresponding during 5s as the signal to noise ratio of current period, namely in step
In S105, it is judged that whether the calculating signal to noise ratio obtained during 5S is in the signal to noise ratio district corresponding to currently used modulation coding mode
Interior signal to noise ratio.
After judging whether to change modulation coding mode, proceed the calculating in next cycle.In the calculating in next cycle
The calculating snr value not calculated a upper last moment in cycle resets, but is then used in the calculating in next cycle.Such as,
When then calculating the calculating signal to noise ratio in next monitoring cycle, then by signal to noise ratio (calculating noise during 5S in a upper cycle
Than), as the calculating signal to noise ratio in a upper moment, directly carried out calculating next time.
Step S105, it is judged that whether the signal to noise ratio monitored is in the signal to noise ratio corresponding to currently used modulation coding mode
In interval.
The interval corresponding relation with the modulation coding mode being suitable for of the signal to noise ratio obtained according to step S101-S103 and with
The corresponding relation of bandwidth, it is judged that the real-time signal to noise ratio obtained at step 104 or the letter periodically monitoring the current period obtained
Make an uproar and than whether be in the signal to noise ratio interval corresponding to currently used modulation coding mode.If described signal to noise ratio is in current
In signal to noise ratio interval corresponding to modulation coding mode, then need not change current modulation coding mode, can return to step
S104, in real time or the current signal to noise ratio of wireless transmission channel described in cycle monitoring.
And if current signal to noise ratio is not interval in the signal to noise ratio corresponding to current modulation coding mode, then carrying out step
S106, changes to the modulation coding mode that the signal to noise ratio interval residing for described signal to noise ratio is corresponding by current modulation coding mode.
Such as, when monitoring current signal in real time, a certain moment t, the signal to noise ratio monitored is 6dB, searches from table 1
The interval corresponding relation with modulation coding mode of signal to noise ratio, signal to noise ratio be the signal to noise ratio interval corresponding to 6dB be 5-7dB, this letter
Making an uproar than interval corresponding modulation coding mode is BPSK3/4, and current modulation coding mode is BPSK3/4, then the tune of system
Coded system processed need not change, is still BPSK3/4, returns and continues executing with step S104；If a certain moment t, monitor channel
Signal to noise ratio be 8dB, corresponding signal to noise ratio interval is 7-10dB, and current modulation coding mode is BPSK3/4, then need to hold
Current modulation coding mode is changed to the tune corresponding to the 7-10dB of signal to noise ratio interval by current BPSK3/4 by row step S106
Coded system QPSK1/2 processed.
When cycle monitoring signal to noise ratio, then the cycle signal to noise ratio that can obtain according to a certain monitoring cycle, determine at it
Signal to noise ratio interval, determine whether to change modulation coding mode further according to the modulation coding mode that this signal to noise ratio interval is corresponding.
Step S107, obtains the bandwidth of the described wireless transmission channel adapted according to the modulation coding mode after change.
Such as, in above-mentioned steps S105-S106, owing to the signal to noise ratio corresponding for current signal 8dB monitored is interval
It not that the current signal to noise ratio corresponding to modulation coding mode BPSK3/4 is interval, therefore by current modulation coding mode change
The modulation coding mode QPSK1/2 that signal to noise ratio interval at current signal 8dB is corresponding, and compiled by the modulation after changing
Code band a width of 13.34Mbps corresponding to mode QPSK1/2, hence, it can be determined that the current band of wireless transmission channel is a width of
13.34Mbps。
Step S108, the bandwidth current according to wireless transmission channel and be the one or more data acquisitions for data acquisition
The bandwidth ratio that storage is respectively configured recaptures the maximum acquisition rate taking each data acquisition unit.
In actual applications, can be that each data acquisition unit in wireless transmission channel is respectively allocated transmission bandwidth, for
The transmission bandwidth of each data acquisition unit distribution can determine according to the grade of service configured for each data acquisition unit, example
As, the grade of service configured for certain data acquisition unit is one-level, and the bandwidth proportion of grade of service one-level correspondence distribution is
80%, if a width of 10Mbps of band that described wireless transmission channel is current, then it is a width of 8Mbps of band of described data acquisition unit configuration,
Determine that the maximum acquisition rate in described wireless transmission channel of described data acquisition unit should be 8Mbps.Described acquisition rate,
Referring to that data acquisition unit sends the speed gathering data to wireless transmitter, described wireless transmitter can be by data acquisition
The collection data that device is sent are transmitted by wireless transmission channel.Due to may not only only one of which in wireless transmission channel
Harvester, each wireless transmitter may connect data acquisition unit, in order to avoid multiple network collection devices transmit data simultaneously
Time, in the wireless transmission channel caused because transfer rate is too high, a certain time data increases sharply, and therefore, it can basis for every number
Be respectively allocated bandwidth according to harvester, such as, have 3 data acquisition units, the grade of service be respectively one-level, two grades, three grades and they
Bandwidth proportion corresponding to the grade of service be respectively 50%, 30%, 20%, if a width of 10Mbps of band that wireless transmission channel is current, for
Above three data acquisition unit is respectively configured bandwidth 5Mbps, 3Mbps, 2Mbps, and divides according to for above three data acquisition unit
The bandwidth joined, is adjusted to 5Mbps, 3Mbps and 2Mbps respectively by their maximum acquisition rate.
Step S109, adjusts by described wireless transmission channel often according to the maximum acquisition rate of each data acquisition unit
The transmission of the collection data of individual data acquisition unit.
In step S109, the maximum of each data acquisition unit can be controlled in the way of using transmission rate regulation message
Acquisition rate.Such as, some data acquisition unit, as network shooting is first-class, itself there is the function being automatically adjusted transfer rate,
Maximum acquisition rate can be configured to fixed model and is automatically adjusted pattern.Fixed model refers to regardless of channel quality,
The acquisition rate of IP Camera is always the value that user sets；And the maximum that the pattern that is automatically adjusted refers to IP Camera is adopted
Collection speed can automatically adjust, therefore according in above-mentioned steps S104-S108, to wireless according to actual quality of wireless channel
The monitoring of channel quality thus the maximum acquisition rate of described IP Camera that obtains, can also wrap between S108 and S109
Include the step sending the rate adaptation message carrying described maximum acquisition rate to described IP Camera, so that described network
Photographic head sends correspondence according to the regulation of described rate adaptation message and gathers the maximum acquisition rate of data and then affect described wireless
Sending module gathers the transmission of data by described wireless transmission channel to each data acquisition unit.
With an embodiment, the wireless transmitter of the present invention is illustrated below, as it is shown on figure 3, described wireless receiving and dispatching
Device 10 is connected with one or more data acquisition units, can connect to use the wired connection modes such as netting twine, it would however also be possible to employ
Other modes connect, and the present invention does not limits.Described wireless transmitter includes: wireless sending module 11, channel quality are monitored
Unit 12, transfer rate control unit 13.
Described wireless transmitter includes wireless sending module 11, for sent by each data acquisition unit received
Gather data, be transmitted by wireless transmission channel according to the corresponding maximum acquisition rate of each data acquisition unit.
The channel quality monitoring means 12 of described wireless transmitter, for obtaining the band that described wireless transmission channel is current
Wide；It is further used for the signal to noise ratio of described transmission signal is monitored, according to the signal to noise ratio district that the detection of described signal to noise ratio is corresponding
Between, the interval corresponding relation with described bandwidth of signal to noise ratio in conjunction with the described wireless transmission channel being pre-configured with obtains described nothing
The bandwidth that line transmission channel is current.
Described transfer rate control unit 13, for according to the current bandwidth of described wireless transmission channel and be one
Or the bandwidth ratio that is respectively configured of multiple data acquisition unit recaptures the maximum acquisition rate taking each data acquisition unit, and by described
Big acquisition rate is sent to corresponding data acquisition unit so that corresponding data acquisition unit adjusts each to described wireless transmission mould
Block sends the maximum acquisition rate of described collection data.
The channel quality monitoring means 12 of described wireless transmitter, before being monitored channel quality, first to join
Put the interval corresponding relation with bandwidth of signal to noise ratio of wireless transmission channel.
Described channel quality monitoring means 12, is further used for obtaining described wireless transmission channel not by system test
One or more signal to noise ratios under cochannel quality and the corresponding adaptive tune transmitting signal in described wireless transmission channel thereof
Coded system processed, thus obtain the corresponding relation of interval with the adaptive modulation coding mode of different signal to noise ratios；According to obtain
The interval corresponding relation with the modulation coding mode in wireless transmission channel of signal to noise ratio and modulating-coding in wireless transmission channel
Mode and the corresponding relation of channel width, set up interval with the adaptive modulation coding mode of different signal to noise ratios and described wireless biography
The corresponding relation of the bandwidth of defeated channel.
In wireless transmission channel, for the signal to noise ratio that certain is given, the signal to noise ratio residing for this signal to noise ratio can be mated for it
Optimal modulation coding mode corresponding to interval, it is also possible to think, different modulation coding modes accommodates different noises
Than interval, this corresponding relation depends on system performance, and the optimal modulation that in different systems, signal to noise ratio interval is corresponding is compiled
Code mode is the most identical.In therefore, it can by repeatedly system test obtains current system, the signal to noise ratio of wireless transmission channel
The corresponding relation of the interval modulation coding mode with transmission signal.And the band of modulation coding mode and channel in wireless transmission channel
Width is also corresponding relation, and various coded systems have corresponding channel width.Therefore, can be according to each modulation coding mode
Obtain the bandwidth of the described wireless transmission channel adapted.
Then, described channel quality monitoring means 12, configuring the signal to noise ratio interval of wireless transmission channel and the right of bandwidth
After should being related to, channel quality is monitored by described channel quality monitoring modular.
Described channel quality monitoring means 12, is further used in real time or the noise of wireless transmission channel described in cycle monitoring
Ratio, it is judged that whether the signal to noise ratio monitored is in the signal to noise ratio interval corresponding to currently used modulation coding mode；Wherein, right
Signal to noise ratio is monitored in real time, it is simply that obtains the numerical value of current signal to noise ratio in real time, and judges the current noise real-time monitored
Whether the numerical value of ratio is in the signal to noise ratio interval corresponding to currently used modulation coding mode.Signal to noise ratio is carried out periodically
Monitoring, it is simply that within the monitoring cycle, at predetermined time intervals, the signal to noise ratio of channel is once monitored, obtains current time
True signal to noise ratio, by last calculated calculating signal to noise ratio and this monitor the true signal to noise ratio that obtains, according to predetermined
Proportion is added, and the numerical value obtained is as this calculating signal to noise ratio；The calculating signal to noise ratio obtained will be weighted for the last time as working as
The signal to noise ratio in front monitoring cycle.When the described signal to noise ratio monitored is not in the noise corresponding to currently used modulation coding mode
Than time interval, current modulation coding mode is changed to the modulating-coding side that the signal to noise ratio interval residing for described signal to noise ratio is corresponding
Formula, and the bandwidth of the described wireless transmission channel adapted is obtained according to the modulation coding mode after change.
The corresponding relation of the modulation coding mode interval and applicable according to the signal to noise ratio that is pre-configured with and right with bandwidth
Should be related to, it is judged that the currently monitored to signal to noise ratio whether be in the signal to noise ratio district corresponding to currently used modulation coding mode
Between.If current signal to noise ratio is in the signal to noise ratio interval corresponding to current modulation coding mode, then need not change and work as
Front modulation coding mode, the noise that channel quality monitoring modular continues in real time or wireless transmission channel described in cycle monitoring is current
Ratio；And if current signal to noise ratio is not interval in the signal to noise ratio corresponding to current modulation coding mode, then channel quality monitoring
Current modulation coding mode is changed to the modulation coding mode that the signal to noise ratio interval residing for described signal to noise ratio is corresponding by module.And
And, the bandwidth of the described wireless transmission channel adapted is obtained according to the modulation coding mode after change.
Described transfer rate control unit 13, is further used for sending to each data acquisition unit and carries described maximum collection
The rate adaptation message of speed, so that described data acquisition unit, by resolving rate adaptation message, obtains in described message and takes
The maximum acquisition rate corresponding to each data acquisition unit of band, adjusts the maximum acquisition rate sending correspondence collection data.
As shown in Figure 4, the data collecting system 40 in the present invention includes the wireless receiving and dispatching dress described in above-described embodiment
Put 10 and the one or more data acquisition units 20 being connected with described wireless transmitter respectively, described wireless transmitter 10
The collection data that described data acquisition unit 20 captures can be transmitted.
Described data acquisition unit 20, farther includes: data transmission unit 21, is used for capturing collection data and being transferred to institute
State wireless transmitter to be transmitted；And
Transfer rate adjustment unit 22, for receiving the speed that the transfer rate control unit of described wireless transmitter sends
Rate regulation message, and according to described rate adaptation message, the maximum acquisition rate of described data transmission unit is set to described speed
The maximum acquisition rate carried in rate regulation message.
The transfer rate adjustment unit 22 of described each data acquisition unit, it may be judged whether have from the wireless receipts being attached thereto
The rate adaptation message of transmitting apparatus 10, if it has, the maximum of self is adopted by the transfer rate adjustment unit 22 of data acquisition unit 20
Collection speed is arranged to the maximum acquisition rate carried in message.
Above-mentioned data collecting system 40 is corresponding with the collecting method being automatically adjusted wireless transmission rate of the present invention,
Detail can be cross-referenced.
The foregoing is only embodiments of the invention, be not limited to the present invention, for those skilled in the art
For Yuan, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of being made,
Equivalent, improvement etc., within should be included in scope of the presently claimed invention.
Claims (9)
1. the collecting method being automatically adjusted wireless transmission rate, it is characterised in that including:
Obtain the bandwidth that the wireless transmission channel of transmission collection data is current；
The bandwidth current according to described wireless transmission channel and be for data acquisition one or more data acquisition units respectively
The bandwidth ratio of configuration recaptures the maximum acquisition rate taking each data acquisition unit, and wherein, described bandwidth proportion is by described data acquisition
The grade of service of storage determines；
Maximum acquisition rate according to each data acquisition unit adjusts by described wireless transmission channel each data acquisition unit
The transmission of collection data；
The rate adaptation message carrying described maximum acquisition rate is sent to each data acquisition unit, so that described data acquisition
Device sends correspondence according to the regulation of described rate adaptation message and gathers the maximum acquisition rate of data.
Method the most according to claim 1, it is characterised in that obtain the bandwidth that described wireless transmission channel is current, including:
The interval corresponding relation with bandwidth of signal to noise ratio of configuration wireless transmission channel；
The signal to noise ratio of the wireless transmission channel that transmission gathers data is monitored, according to the noise that the detection of described signal to noise ratio is corresponding
Than interval, in conjunction with the interval bandwidth current with the corresponding relation of the bandwidth described wireless transmission channel of acquisition of described signal to noise ratio.
Method the most according to claim 2, it is characterised in that the signal to noise ratio of configuration wireless transmission channel is interval and bandwidth
Corresponding relation, including:
The described wireless transmission channel one or more signal to noise ratios under different channels quality and phase thereof are obtained by system test
The modulation coding mode transmitting signal in described wireless transmission channel that should be adaptive, thus obtain different signal to noise ratios interval with
The corresponding relation of adaptive modulation coding mode；
Obtain the bandwidth of the described wireless transmission channel adapted according to each modulation coding mode, thus set up different noises
Than interval with adaptive modulation coding mode and the corresponding relation of the bandwidth of described wireless transmission channel.
Method the most according to claim 3, it is characterised in that transmission is gathered the signal to noise ratio of the wireless transmission channel of data
It is monitored, interval according to the signal to noise ratio that the detection of described signal to noise ratio is corresponding, interval corresponding with bandwidth in conjunction with described signal to noise ratio
The bandwidth that wireless transmission channel described in Relation acquisition is current, including:
In real time or the signal to noise ratio of wireless transmission channel described in cycle monitoring, and judge that whether the signal to noise ratio monitored is currently used
The signal to noise ratio interval corresponding to modulation coding mode in；
When the described signal to noise ratio monitored is not or not the signal to noise ratio interval corresponding to currently used modulation coding mode, will be current
Modulation coding mode changes to the modulation coding mode that the signal to noise ratio interval residing for described signal to noise ratio is corresponding, and according to change after
Modulation coding mode obtains the bandwidth of the described wireless transmission channel adapted.
5. a wireless transmitter, is connected with one or more data acquisition units, it is characterised in that including:
Wireless sending module, for the collection data sent by each data acquisition unit received, according to each data acquisition
The corresponding maximum acquisition rate of device is transmitted by wireless transmission channel；
Channel quality monitoring means, for obtaining the bandwidth that described wireless transmission channel is current；
Transfer rate control unit, for according to the current bandwidth of described wireless transmission channel and be the one or more data
The bandwidth ratio that harvester is respectively configured recaptures the maximum acquisition rate taking each data acquisition unit, and by described maximum acquisition rate
It is sent to corresponding data acquisition unit so that corresponding data acquisition unit adjusts each described to the transmission of described wireless sending module
Gathering the maximum acquisition rate of data, wherein, described bandwidth proportion is determined by the grade of service of described data acquisition unit, transmission speed
Rate control unit is additionally operable to send the rate adaptation message carrying described maximum acquisition rate to each data acquisition unit, so that
Described data acquisition unit adjusts the maximum acquisition rate sending correspondence collection data according to described rate adaptation message.
Wireless transmitter the most according to claim 5, it is characterised in that described channel quality monitoring means, further
For:
The interval corresponding relation with bandwidth of signal to noise ratio of configuration wireless transmission channel；
The signal to noise ratio of the wireless transmission channel that transmission gathers data is monitored, according to the noise that the detection of described signal to noise ratio is corresponding
Than interval, in conjunction with the interval bandwidth current with the corresponding relation of the bandwidth described wireless transmission channel of acquisition of described signal to noise ratio.
Wireless transmitter the most according to claim 6, it is characterised in that described channel quality monitoring means, further
For:
The described wireless transmission channel one or more signal to noise ratios under different channels quality and phase thereof are obtained by system test
The modulation coding mode transmitting signal in described wireless transmission channel that should be adaptive, thus obtain different signal to noise ratios interval with
The corresponding relation of adaptive modulation coding mode；
Obtain the bandwidth of the described wireless transmission channel adapted according to each modulation coding mode, thus set up different noises
Than interval with adaptive modulation coding mode and the corresponding relation of the bandwidth of described wireless transmission channel.
Wireless transmitter the most according to claim 7, it is characterised in that described channel quality monitoring means, further
For:
In real time or the signal to noise ratio of wireless transmission channel described in cycle monitoring, and judge that whether the signal to noise ratio monitored is currently used
The signal to noise ratio interval corresponding to modulation coding mode in；
When the described signal to noise ratio monitored is not or not the signal to noise ratio interval corresponding to currently used modulation coding mode, will be current
Modulation coding mode changes to the modulation coding mode that the signal to noise ratio interval residing for described signal to noise ratio is corresponding, and according to change after
Modulation coding mode obtains the bandwidth of the described wireless transmission channel adapted.
9. a data collecting system, including: according to the wireless transmitter according to any one of claim 5 to 8 and difference
The one or more data acquisition units being connected with described wireless transmitter, wherein,
Described data acquisition unit, farther includes:
Data transmission unit, is used for capturing collection data and being transferred to described wireless transmitter being transmitted；And
Transfer rate adjustment unit, for receiving the rate adaptation that the transfer rate control unit of described wireless transmitter sends
Message, and according to described rate adaptation message, the maximum acquisition rate of described data transmission unit is set to described rate adaptation
The maximum acquisition rate carried in message.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310191436.9A CN103297191B (en) | 2013-05-21 | 2013-05-21 | It is automatically adjusted collecting method and the data collecting system of wireless transmission rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310191436.9A CN103297191B (en) | 2013-05-21 | 2013-05-21 | It is automatically adjusted collecting method and the data collecting system of wireless transmission rate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103297191A CN103297191A (en) | 2013-09-11 |
| CN103297191B true CN103297191B (en) | 2016-12-28 |
Family
ID=49097561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310191436.9A Active CN103297191B (en) | 2013-05-21 | 2013-05-21 | It is automatically adjusted collecting method and the data collecting system of wireless transmission rate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103297191B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105191244B (en) * | 2014-04-16 | 2019-04-23 | 华为技术有限公司 | A kind of modulator approach of adaptive-bandwidth, device and system |
| EP3540991B1 (en) | 2018-03-13 | 2021-07-28 | ABB Schweiz AG | Intelligent electronic device comprising a cellular radio module |
| CN109756301A (en) * | 2019-01-11 | 2019-05-14 | 珠海泰芯半导体有限公司 | The selection method of wireless communication transmissions bandwidth and modulation system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6959171B2 (en) * | 2002-02-28 | 2005-10-25 | Intel Corporation | Data transmission rate control |
| CN101582839A (en) * | 2008-05-14 | 2009-11-18 | 华为技术有限公司 | Method, device and system for regulating data traffic |
| CN102387100A (en) * | 2011-11-28 | 2012-03-21 | 中国电子科技集团公司第五十四研究所 | Channel estimation and adaptive transmission method for variable bandwidth system |
-
2013
- 2013-05-21 CN CN201310191436.9A patent/CN103297191B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6959171B2 (en) * | 2002-02-28 | 2005-10-25 | Intel Corporation | Data transmission rate control |
| CN101582839A (en) * | 2008-05-14 | 2009-11-18 | 华为技术有限公司 | Method, device and system for regulating data traffic |
| CN102387100A (en) * | 2011-11-28 | 2012-03-21 | 中国电子科技集团公司第五十四研究所 | Channel estimation and adaptive transmission method for variable bandwidth system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103297191A (en) | 2013-09-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105025249B (en) | Video monitoring data transfer control method, device and video monitoring system | |
| KR101651494B1 (en) | Device and method for controlling uplink transmission power in wireless communication system | |
| CN109218678B (en) | Mesh technology-based wireless video monitoring automatic networking method and system | |
| US8873414B2 (en) | Communication apparatus, communication method, and communication system | |
| CN110049512A (en) | A kind of forward pass network data processing device and method | |
| CN107135055A (en) | Measuring method, CSI RS resource share methods and device | |
| CN103297191B (en) | It is automatically adjusted collecting method and the data collecting system of wireless transmission rate | |
| CN102025568B (en) | Streaming media service quality monitoring device and method | |
| CN106534956A (en) | Video data transmission method, device and system for screen projection | |
| US20180027420A1 (en) | Image communication system, image transmission apparatus, image transmission method, and recording medium | |
| KR101521700B1 (en) | Wireless communication method and wlan for signaling deferral management messages | |
| CN103249112A (en) | User access control method and device, and route | |
| CN105898542A (en) | Display screen brightness adjustment and data transmission method, device and system | |
| WO2022110927A1 (en) | Method for identifying access point deployment position, and position identification device | |
| EP1958376A1 (en) | A wireless station and method in a wireless station for initiating resource measuremets | |
| CN103297176A (en) | Method and device for feeding back and processing channel state information, user equipment and base station | |
| CN109314884A (en) | Business datum shunt method and device | |
| CN103841605B (en) | A kind of method and apparatus for realizing multiple BBU equipment rooms baseband signal collaboration processing | |
| CN109196822A (en) | Method and apparatus for detecting internet connectivity problem | |
| EP2836010B1 (en) | Data distribution transmission method, apparatus and system | |
| CN102611494B (en) | Base band unit (BBU) and method for measuring optical fiber delay thereof | |
| CN104967880B (en) | A kind of method and apparatus of distribution video uniform in the wireless network | |
| CN201717893U (en) | Wireless remote data transmission device adaptive to three 3G communication protocols | |
| US20120314596A1 (en) | Communication apparatus, communication method, and communication system | |
| CN110099409B (en) | Method and system for controlling client access by Mesh networking AP |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: INST OF MICROELECTRONICS, C. A. S Free format text: FORMER OWNER: JIANGSU INTERNET OF THINGS RESEARCH + DEVELOMENT CO., LTD. Effective date: 20150624 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20150624 Address after: 100029 Beijing city Chaoyang District Beitucheng West Road No. 3 Applicant after: Institute of Microelectronics, Chinese Academy of Sciences Address before: 214135 Jiangsu province Wuxi city Wuxi District Road No. 200 China Linghu Sensor Network International Innovation Park building C Applicant before: JIANGSU R & D CENTER FOR INTERNET OF THINGS |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160107 Address after: 214135 Jiangsu Wuxi District Road No. 200 China Linghu Sensor Network International Innovation Park C building 10 floor Applicant after: JIANGSU ZHONGKE YILIAN COMMUNICATION TECHNOLOGY Co.,Ltd. Address before: 100029 Beijing city Chaoyang District Beitucheng West Road No. 3 Applicant before: Institute of Microelectronics, Chinese Academy of Sciences |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20230905 Granted publication date: 20161228 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20240119 Granted publication date: 20161228 |