CN100493002C - A method for computing the data loss in the network transfer - Google Patents
A method for computing the data loss in the network transfer Download PDFInfo
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Abstract
The invention provides a method for sum-up the data lost during the network transmission, before sending data at the transmission end, append the identifying information to the idle bit of data frame, after the network transmission, the receiving end may acquire the identification information of currently received data frame, compared the identification information of currently received data frame with the calculated value of currently received time, then, according to the comparison results, obtain the number of frame of data lost, thus sum-up the loss rate of network transmission data. Even if the hardware configuration is very low, and low bandwidth of network, according to the data format, and append the identification information in the data, realize the accurate statistics for the loss rate of network transmission data, moreover, no need of additional data transmission in the network, reduce the occupancy of resources.
Description
Technical field
The present invention relates to data network transmission techniques, the method for particularly a kind of statistics obliterated data in Network Transmission.
Background technology
Along with development of internet technology, to the transmission of audio-video document, not only utilize cable network, can utilize wireless network too.Such as, the transmission of sound can adopt AMR (Adaptive Multi-Rate) audio format to transmit, and concrete steps are that sound is carried out the AMR coding, transmit by wired or wireless network then, after the voice data that is transmitted is decoded, realize playing.
Yet because the complexity and the unsteadiness of network can cause data the phenomenon of loss of data to occur in Network Transmission.For the current loss of data situation of awareness network, be necessary the data that receiving terminal receives are added up.At present, generally can adopt RTCP Real-time Transport Control Protocol (RTCP) to finish the statistics that network data is lost.Because the used information of statistics is included in the PRCP packet, this method just needs system not stop paying out in the data in transmission to send RTCP packet, like this bandwidth of network, the hardware configuration of system are required than higher.
Summary of the invention
In view of this, the object of the present invention is to provide the method for obliterated data in a kind of statistics network transmission, can be applied to the lower system of hardware configuration, and need in network, not transmit extra data.
For achieving the above object, the invention provides the method for a kind of statistics obliterated data in Network Transmission, may further comprise the steps:
1) transmitting terminal is according to the transmitting time length of Frame, determining time, with the identifying information of identical transmitting time count value as the Frame of required transmission in the described time period, and make the transmitting time count value of the Frame of required transmission in two adjacent time periods inequality, and determined identifying information is added the spare bits of described Frame;
2) transmitting terminal sends by network described Frame to receiving terminal;
3) receiving terminal receives and resolves described Frame, obtains described identifying information from the spare bits of described Frame, and according to the identifying information that is obtained, the statistics Loss Rate.
In the described step 3), receiving terminal is according to received Frame, obtain the pairing time of reception count value of the current Frame that receives, and the identifying information in more described time of reception count value and the current Frame that receives, calculate the obliterated data frame number according to comparative result, thus the statistics Loss Rate.
Described receiving terminal is according to received Frame, obtaining current time of reception count value is specially: receiving terminal equates according to the pairing time of reception count value of the Frame that receives in the time period, the principle that the pairing time of reception count value of Frame that receives in two adjacent time periods does not wait obtains the pairing time of reception count value of the current Frame that receives.
In the described step 1), transmitting terminal is determined the transmission frame number maximum count value of the Frame of required transmission in the described time period in advance according to the transmitting time length of Frame; And, determine the transmitting time maximum count value according to the figure place of described spare bits;
Described step 1) is further comprising the steps of:
100) obtain a frame data frame as the current Frame that needs transmission;
101) judge whether current transmit frame counting number value reaches described transmission frame number maximum count value, if then execution in step 102), otherwise execution in step 106);
102) transmit frame counting number value is changed to 0;
103) judge whether current transmitting time count value reaches described transmitting time maximum count value, if then execution in step 104), otherwise execution in step 105);
104) the transmitting time count value is changed to 1, and jumps to step 106);
105) the transmitting time count value adds 1;
106) add to current transmitting time count value in the spare bits of current data frame as identifying information;
107) transmit frame counting number value adds 1, and gets back to described step 100).
In the described step 3), receiving terminal according to sending the frame number maximum count value, is determined the frames received maximum count value in advance; And, determine the time of reception maximum count value according to the transmitting time maximum count value;
Described step 3) is further comprising the steps of:
300) receive a frame data frame;
301) judge whether current frames received count value reaches described frames received maximum count value, if then execution in step 302), otherwise execution in step 305);
302) the frames received count value is changed to 0;
303) judge whether current time of reception count value reaches described time of reception maximum count value, if then execution in step 304), otherwise execution in step 305);
304) the time of reception count value is changed to 1;
305) the time of reception count value adds 1;
306) extract identifying information from current Frame, and with current time of reception count value relatively, if equate that then execution in step 309), otherwise execution in step 307 then);
307) calculate the data frame number of losing;
308) identifying information of current data frame is composed to current time of reception count value, and the frames received count value is changed to 0;
309) the admission control rate of calculating in Network Transmission, and return described step 300).
The formula of the calculating obliterated data frame number described step 307) is:
The data frame number of the whole time period of obliterated data frame number in the time period of obliterated data frame number=1+lose.
The computing formula of obliterated data frame number is in described 1 time period:
Interior data frame number+1 of obliterated data frame number=frames received maximum count value-current 1 time period that has received in 1 time period.
When the identifying information of described current data frame during greater than described current time of reception count value, the computing formula of the data frame number of the whole time period of losing is:
The data frame number of the whole time period of losing=(identifying information of current data frame-current time of reception count value-1) * frames received maximum count value;
When the identifying information of described current data frame during less than described current time of reception count value, the computing formula of the data frame number of the whole time period of losing is:
The data frame number of the whole time period of losing=(identifying information-1 of time of reception maximum count value-current time of reception count value+current data frame) * frames received maximum count value.
Described step 309) formula of loss of data probability is in the computing network transmission in:
Loss of data probability=obliterated data frame number/(the data frame number of obliterated data frame number+actual reception).
The described data of transmitting in network are the AMR voice data, and the identifying information in described step 1) and the step 3) is one four a binary number, and it is added to the high four of AMR data frame head.
Described transmission frame number maximum count value and described frames received maximum count value are 50; Described transmitting time maximum count value and described time of reception maximum count value are 15.
By above technical scheme as seen, the method of obliterated data in the statistics network transmission provided by the invention, before sending data, add identifying information to the Frame spare bits, by transmitting terminal after Network Transmission, receiving terminal obtains the identifying information of current receiving data frames, and the identifying information of more current receiving data frames and current time of reception count value, then, according to comparative result, draw the loss of data frame number, thus the Loss Rate of statistics network transmission data.Like this, even under the situation lower in hardware configuration, that the network bandwidth is lower, just can be according to the characteristic of data format, realize the Loss Rate of transmitted data on network is comparatively accurately added up by in Frame, adding identifying information, and need in network, not transmit extra data, reduced resource occupation.
Description of drawings
Fig. 1 is the flow chart of method provided by the invention.
Fig. 2 is with the AMR data instance, and transmitting terminal adds the flow chart of identifying information among the Fig. 1 that provides before transmitted data on network.
Fig. 3 is with the AMR data instance, and receiving terminal receives the flow chart of transmitted data on network and statistics loss situation among the Fig. 1 that provides.
Embodiment
The statistical method of loss of data is based on the spare bits adding identifying information of the Frame of Network Transmission in the Network Transmission of the present invention.So the data frame format that forms sends and is received by receiving terminal by network.Receiving terminal just according to the characteristics of institute's transferring data frames form, in conjunction with identifying information in the current Frame that receives and current time of reception count value comparable situation, calculates the frame number of actual loss data, thus computing network loss of transmitted data rate.
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to accompanying drawing, the present invention is described in more detail, and Fig. 1 is the flow chart of method provided by the invention.Its concrete steps are as follows:
Transmitting terminal can be according to the transmitting time length of Frame, with the transmitting time count value of the Frame identifying information as this Frame; Can stipulate that also fixedly the Frame of frame number is identical count value, with described count value as should be fixedly the identifying information of the Frame of frame number.
Transmitting terminal can be according to the transmitting time length of Frame, determining time, and be that all Frames of interior required transmission of described time period are got identical transmitting time count value, and make the transmitting time count value of the Frame of required transmission in two adjacent time periods inequality, the described time period can be 1 second or several seconds; Transmitting terminal can set also fixedly that the Frame of frame number is one group, and every group of Frame got identical count value, and makes the count value of two adjacent groups Frame inequality.
Receiving terminal equates according to the pairing time of reception count value of the Frame that receives in the time period, the time of reception count value of the Frame correspondence that receives in two adjacent time periods equates, the principle that the pairing time of reception count value of Frame that receives in two adjacent time periods does not wait, obtain the pairing time of reception count value of the current Frame that receives, and the identifying information in more described time of reception count value and the current Frame that receives, calculate the obliterated data frame number according to comparative result, thus the Loss Rate of statistics network transmission data.
If the transmitting terminal regulation fixedly Frame of frame number is identical count value, with described count value as should be fixedly the identifying information of the Frame of frame number, then obtain the pairing count value of the current Frame that receives according to above-mentioned principle, and the identifying information in more described count value and the current Frame that receives, calculate the obliterated data frame number according to comparative result, thus the Loss Rate of statistics network transmission data.
The formula that calculates the obliterated data frame number is:
The data frame number of the whole time period of obliterated data frame number in the time period of obliterated data frame number=1+lose
The computing formula of obliterated data frame number is in described 1 time period:
Interior data frame number+1 of obliterated data frame number=frames received maximum count value-current 1 time period that has received in 1 time period
When the identifying information of described current data frame during greater than described current time of reception count value, the computing formula of the data frame number of the whole time period of losing is:
The data frame number of the whole time period of losing=(identifying information of current data frame-current time of reception count value-1) * frames received maximum count value
When the identifying information of described current data frame during less than described current time of reception count value, the computing formula of the data frame number of the whole time period of losing is:
The data frame number of the whole time period of losing=(identifying information-1 of time of reception maximum count value-current time of reception count value+current data frame) * frames received maximum count value
The formula of loss of data probability is in the computing network transmission:
Loss of data probability=obliterated data frame number/(the data frame number of obliterated data frame number+actual reception)
Fig. 2 be transmitted data on network with the AMR data instance, the described time period was an example with 1 second, transmitting terminal is that the AMR data of required transmission are determined identifying information, and adds the embodiment schematic diagram of identifying information to AMR data spare bits.
The AMR audio data format derives from CD, MP3 etc., and it is similar to MP3, but the compression ratio that adopts than MP3 is bigger, generally is used for the not high sound of sample rate is encoded, such as speaking occasions such as speech.The AMR voice data is made up of a plurality of AMR Frames, and each AMR Frame all has a frame head, accounts for a byte.The frame head byte comprises 8, and high 4 is spare bits, low 4 coding modes that are used to describe this frame.
In the present embodiment, transmitting terminal is with the identifying information of transmitting time count value as Frame, transmitting terminal is in advance according to the transmitting time length of Frame, determine the transmission frame number maximum count value of the Frame of required transmission in the described time period, and, determine the transmitting time maximum count value according to the figure place of described spare bits.
Described transmitting terminal is that the AMR data of required transmission are determined identifying information, and as follows to the concrete steps of AMR data spare bits interpolation identifying information:
Step 200, initialization transmitting time count value second1=1, transmit frame counting number value framecount1=0.
According to the AMR data characteristic, be 20 milliseconds in the time span of Network Transmission one frame data, so do not having under the situation of loss of data, can transmit AMR data 50 frames 1 second, so described transmitting time maximum count value is 50; The second1 here is used for transmitting time is counted, it will be converted to binary number compose to the frame head of AMR Frame as identifying information high 4, so described transmission frame number maximum count value is 15.
Step 201 is put into the transmission buffering area with the AMR data.
Step 202 judges whether the AMR data frame number Fn1 that sends in the buffering area equals 0.If Fn1 equals 0, then thinking to send in the buffering area does not have the AMR data, returns step 201; If Fn1 is not equal to 0, then thinking to send in the buffering area has the AMR data, execution in step 203.
Step 203 obtains an AMR Frame from the input block, the AMR data frame number Fn that sends in the buffering area subtracts 1.
Step 204 judges whether transmit frame counting number value framecount1 equals 50.If framecount1 equals 50, then think and finish from last one second, sent the data in 1 second, i.e. 50 frame data, execution in step 205; If framecount1 is not equal to 50, then think and finished from last one second, also do not finish the transmission of (50 frame) data in 1 second, execution in step 209.
Step 205, framecount1 is changed to 0 with transmit frame counting number value, prepares beginning next round counting.
Step 206 judges whether transmitting time count value second1 equals 15.If second1 equals 15, then execution in step 207; If secound1 is not equal to 15, then execution in step 208.
Step 207, second1 is changed to 1 with the transmitting time count value, prepares beginning next round counting.
Step 208, transmitting time count value second1 adds 1.
Step 209 changes into binary code with the currency of second1, and adds the high 4 of current AMR data frame head to, as the identifying information of this Frame.
Step 210 is finished the processing to frame data, and transmit frame counting number value framecount1 adds 1; Return step 202.
If transmitting terminal is with the identifying information of transmitting time count value as Frame, receiving terminal will be determined the frames received maximum count value in advance according to sending the frame number maximum count value; And, determine the time of reception maximum according to the transmitting time maximum count value.Fig. 3 is to be the AMR data instance with the transmitted data on network, with the described time period be 1 second be example, receiving terminal receives also resolves the AMR Frame, according to the identifying information that obtains from AMR Frame spare bits, the specific embodiment schematic diagram that lost data frames is added up.
In the present embodiment, transmitting terminal is with the identifying information of transmitting time count value as Frame, and receiving terminal will be determined the frames received maximum count value in advance according to sending the frame number maximum count value; And, determine the time of reception maximum count value according to the transmitting time maximum count value; Can draw, the frames received maximum count value is 15, and the time of reception maximum count value is 50.
Described transmitting terminal receives and resolves the AMR Frame, and according to the identifying information that obtains from AMR Frame spare bits, the concrete steps that lost data frames is added up are as follows:
Step 302 judges whether the AMR data frame number Fn2 that receives in the buffering area equals 0.If Fn2 equals 0, then thinking to receive in the buffering area does not have the AMR data, returns step 301; If Fn2 is not equal to 0, then thinking to receive in the buffering area has the AMR data, execution in step 303.
Step 303 obtains an AMR Frame from receive buffering area, frames received count value Fn2 subtracts 1, and actual reception data frame number Tfnumber adds 1.
Step 304 judges whether frames received count value framecount2 equals 50.If framecount2 equals 50, then think and finish from last one second, received the AMR data in 1 second, i.e. 50 frame data, execution in step 306; If framecount2 is not equal to 50, then think and finished from last one second, also do not finish the reception of (50 frame) data in 1 second, execution in step 305.
Step 307 judges whether time of reception count value second2 equals 15.If second2 equals 15, then execution in step 308; If secound2 is not equal to 15, then execution in step 309.
Step 310 is extracted identifying information from the current AMR Frame that receives, and the value of identifying information is converted into decimal number composes variable fcount to expression Frame identifying information value.
Step 311 judges whether the identifying information value fcount of current receiving data frames equates with current time of reception count value second2.If fcount equals second2, then execution in step 316; If fcount is not equal to second2, then think the loss of data phenomenon in Network Transmission, to have occurred, execution in step 312.
Step 313 is calculated corresponding second number: the temp1=fconut-second2 of obliterated data.
Step 314 is calculated corresponding second number: the temp1=15-second2+fcount of obliterated data.Step 315 is calculated obliterated data frame number: lost=(50-framecount+1)+(temp1-1) * 50.
By the above embodiments as seen, adopt method provided by the invention, even under the situation lower in hardware configuration, that the network bandwidth is lower, and need in network, not transmit extra data, just can be according to the characteristic of data format, add identifying information by transmitting terminal to the spare bits of Frame, receiving terminal is receiving data frames identifying information and current time of reception count value relatively, and realizes the Loss Rate of transmitted data on network is comparatively accurately added up in conjunction with comparative result.
In a word, the above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.Those skilled in the art can change accordingly according to embodiments of the invention, other voice datas or video data or other data that are used to have the set form characteristics as method with present embodiment, characteristics according to its form are added identifying information in data, with realization data are lost and add up.Therefore within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1, the method for a kind of statistics obliterated data in Network Transmission is characterized in that: said method comprising the steps of:
1) transmitting terminal is according to the transmitting time length of Frame, determining time, with the identifying information of identical transmitting time count value as the Frame of required transmission in the described time period, and make the transmitting time count value of the Frame of required transmission in two adjacent time periods inequality, and determined identifying information is added the spare bits of described Frame;
2) transmitting terminal sends by network described Frame to receiving terminal;
3) receiving terminal receives and resolves described Frame, obtains described identifying information from the spare bits of described Frame, and according to the identifying information that is obtained, the statistics Loss Rate.
2, the method for claim 1, it is characterized in that: in the described step 3), receiving terminal is according to received Frame, obtain the pairing time of reception count value of the current Frame that receives, and the identifying information in more described time of reception count value and the current Frame that receives, calculate the obliterated data frame number according to comparative result, thus the statistics Loss Rate.
3, method as claimed in claim 2, it is characterized in that: described receiving terminal is according to received Frame, obtaining current time of reception count value is specially: receiving terminal equates according to the pairing time of reception count value of the Frame that receives in the time period, the principle that the pairing time of reception count value of Frame that receives in two adjacent time periods does not wait obtains the pairing time of reception count value of the current Frame that receives.
4, as described method one of among the claim 2-3, it is characterized in that: in the described step 1), transmitting terminal is determined the transmission frame number maximum count value of the Frame of required transmission in the described time period in advance according to the transmitting time length of Frame; And, determine the transmitting time maximum count value according to the figure place of described spare bits;
Described step 1) is further comprising the steps of:
100) obtain a frame data frame as the current Frame that needs transmission;
101) judge whether current transmit frame counting number value reaches described transmission frame number maximum count value, if then execution in step 102), otherwise execution in step 106);
102) transmit frame counting number value is changed to 0;
103) judge whether current transmitting time count value reaches described transmitting time maximum count value, if then execution in step 104), otherwise execution in step 105);
104) the transmitting time count value is changed to 1, and jumps to step 106);
105) the transmitting time count value adds 1;
106) add to current transmitting time count value in the spare bits of current data frame as identifying information;
107) transmit frame counting number value adds 1, and gets back to described step 100).
5, method as claimed in claim 4 is characterized in that: in the described step 3), receiving terminal according to sending the frame number maximum count value, is determined the frames received maximum count value in advance; And, determine the time of reception maximum count value according to the transmitting time maximum count value;
Described step 3) is further comprising the steps of:
300) receive a frame data frame;
301) judge whether current frames received count value reaches described frames received maximum count value, if then execution in step 302), otherwise execution in step 305);
302) the frames received count value is changed to 0;
303) judge whether current time of reception count value reaches described time of reception maximum count value, if then execution in step 304), otherwise execution in step 305);
304) the time of reception count value is changed to 1;
305) the time of reception count value adds 1;
306) extract identifying information from current Frame, and with current time of reception count value relatively, if equate that then execution in step 309), otherwise execution in step 307 then);
307) calculate the data frame number of losing;
308) identifying information of current data frame is composed to current time of reception count value, and the frames received count value is changed to 0;
309) the admission control rate of calculating in Network Transmission, and return described step 300).
6, method as claimed in claim 5 is characterized in that: the formula of the calculating obliterated data frame number described step 307) is:
The data frame number of the whole time period of obliterated data frame number in the time period of obliterated data frame number=1+lose.
7, method as claimed in claim 6 is characterized in that: the computing formula of obliterated data frame number is in described 1 time period:
Interior data frame number+1 of obliterated data frame number=frames received maximum count value-current 1 time period that has received in 1 time period.
8, method as claimed in claim 7 is characterized in that:
When the identifying information of described current data frame during greater than described current time of reception count value, the computing formula of the data frame number of the whole time period of losing is:
The data frame number of the whole time period of losing=(identifying information of current data frame-current time of reception count value-1) * frames received maximum count value;
When the identifying information of described current data frame during less than described current time of reception count value, the computing formula of the data frame number of the whole time period of losing is:
The data frame number of the whole time period of losing=(identifying information-1 of time of reception maximum count value-current time of reception count value+current data frame) * frames received maximum count value.
9, method as claimed in claim 5 is characterized in that: the formula of loss of data probability is in the computing network transmission described step 309):
Loss of data probability=obliterated data frame number/(the data frame number of obliterated data frame number+actual reception).
10, the method for claim 1 is characterized in that: the described data of transmitting in network are the AMR voice data, and the identifying information in described step 1) and the step 3) is one four a binary number, and it is added to the high four of AMR data frame head.
11, method as claimed in claim 10 is characterized in that: described transmission frame number maximum count value and described frames received maximum count value are 50; Described transmitting time maximum count value and described time of reception maximum count value are 15.
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| CN101562500B (en) * | 2009-05-25 | 2012-07-04 | 腾讯科技（深圳）有限公司 | Data transmission request method, data transmission method and data transmission device |
| CN102184234B (en) * | 2011-05-13 | 2014-12-10 | 百度在线网络技术（北京）有限公司 | Method and equipment used for inquiring, increasing, updating or deleting information processing rules |
| CN106603322B (en) * | 2015-10-20 | 2020-08-14 | 华为技术有限公司 | Message sending and receiving method and network equipment |
| CN108897267A (en) * | 2016-05-18 | 2018-11-27 | 漳州龙文区汇洋远软件开发有限公司 | power dispatching automation control system |
| CN108563207A (en) * | 2016-05-18 | 2018-09-21 | 常州爱上学教育科技有限公司 | With network managing and control system adjust routes information frames by intelligent electric power Dispatching Control System |
| CN106209496A (en) * | 2016-06-23 | 2016-12-07 | 珠海格力电器股份有限公司 | A kind of communication abnormality detection device and method |
| CN112615690B (en) * | 2020-12-18 | 2022-11-15 | 北京交大思源科技有限公司 | Method, device and equipment for preventing emergency broadcast data from being lost |
| CN113701832A (en) * | 2021-08-28 | 2021-11-26 | 上海光华仪表有限公司 | Control method and system of high-voltage union electromagnetic flowmeter |
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