CN113612856A - Processing method of data to be transmitted and data transmitting method - Google Patents
Processing method of data to be transmitted and data transmitting method Download PDFInfo
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- 230000005540 biological transmission Effects 0.000 claims description 51
- 230000006835 compression Effects 0.000 claims description 7
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- 238000005516 engineering process Methods 0.000 claims description 2
- 230000011218 segmentation Effects 0.000 description 6
- 230000003044 adaptive effect Effects 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
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- 238000004458 analytical method Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0823—Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
- H04L67/61—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources taking into account QoS or priority requirements
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Abstract
The invention provides a method for processing data to be sent, which comprises the steps of setting a plurality of data buffer areas and priorities thereof according to the performance of a computer system and the importance degree and/or destination address of the data, obtaining channel condition parameters of a preset sending time period between a sending end and a receiving end of the data to be sent, setting data packet sending parameters according to the channel condition parameters, then packaging the data packet sending parameter generation control part, packaging the data to be sent to generate a data part, combining the control part and the data part to generate a data packet to be sent, and finally sending the data packet to be sent to the corresponding data buffer areas according to the importance degree and/or destination address of the data to be sent in the preset time period. The invention also provides a method for sending data.
Description
Technical Field
The present invention relates to a data processing method, and more particularly, to a data processing method and a data transmission method.
Background
In a data transmission system, a data sending end generally needs to perform appropriate preprocessing on the sent data in order to quickly and efficiently send the data to a data receiving end, instead of simply sending the data in sequence. Many measures are usually taken, such as code compression of the data to be transmitted, allocation of data buffers for the data to be transmitted, etc. A common processing method is to classify data according to importance or a predetermined weight, determine a transmission priority, and then allocate the data with different priorities to queues with different priorities for transmission. In a specific application, the priority determining device may be divided into a packet input unit and a packet distribution unit, and the data sending device may be divided into a data output unit and an output data buffer.
Such preprocessing of data to be transmitted only considers certain characteristics of the data itself, and it is often difficult to cope with the complex situations occurring in the data transmission process. For example, when the channel quality is poor, an excessively high transmission rate may result in a failure of data transmission, and a simple repeated transmission may consume too much system transmission resources.
Disclosure of Invention
The invention solves the problem of providing a method for processing data to be sent and a method for sending data, which can effectively utilize data transmission resources.
The method for processing the data to be sent provided by the embodiment of the invention comprises the following steps:
setting a plurality of data buffers and priorities thereof according to the performance of the computer system and the importance degree and/or destination address of the data;
acquiring channel condition parameters of a preset sending time period between a sending end and a receiving end of data to be sent, and setting data packet sending parameters according to the channel condition parameters;
the data packet transmission parameter generation control part is packaged, the data to be transmitted is packaged to generate a data part, and the control part and the data part are combined to generate a data packet to be transmitted;
and transmitting the data packet to be transmitted to a corresponding data buffer area according to the importance degree and/or the destination address of the data to be transmitted in a preset time period.
The method further comprises the following steps:
and processing the data part by utilizing a sliding window technology, and generating a reference label sequence of the data part, wherein the label sequence is used as a new data part.
The method for sending data provided by the embodiment of the invention comprises the following steps:
a data part for sending the data packet to be sent according to the instruction of the control part of the data packet to be sent;
and judging whether the sending state meets the standard, if so, continuing to operate the subsequent data packet in the buffer area according to system scheduling, and otherwise, continuing to process the subsequent data packet according to the standard reaching degree.
The embodiment of the invention has the advantages that the data packet sending parameters are set by referring to the channel condition between the sending end and the receiving end, so that the data sending process is adaptive to the actual condition of the channel, the performance of the channel for transmitting data and the performance of a computer system can be fully exerted, and the method is particularly suitable for improving the reliability of data transmission under the condition of unstable channel condition, thereby effectively utilizing data transmission resources and improving the transmission efficiency of data.
In addition, the number and the priority of the data buffer zones which are adaptive to the performance of the computer system, the importance degree of the data and the destination address are set, so that the data transmission by adopting a multithreading concurrent processing mode is facilitated, and the use efficiency of transmission resources is further improved.
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Fig. 1 is a flowchart of an embodiment of a method for processing data to be transmitted according to the present invention.
Detailed Description
Reference is first made to fig. 1. The embodiment shown in fig. 1 is an example of a suitable concurrent implementation employing multiple threads. In step 11, a plurality of data buffers are provided, and at least two buffers are provided to realize maximum parallel data transmission. In this example, the number and priority of buffers are set according to the performance of the computer system, and according to the importance level of data, the destination address. When the data has different properties, such as different importance, the number and priority of the data buffers can be set according to the performance of the computer system and the importance degree of the data to be sent; the importance of the receiving nodes is different, and the number and the priority of the data buffer areas can be set only according to the performance of the computer system and the destination address of the receiving node of the data to be sent; if the accuracy requirements for the data are different, the number and priority of data buffers can be set according to the performance of the computer system and the requirements for the data to be sent and the data, and so on. The above conditions can also be used in combination, for example, the importance degree of the data and the destination address are used in combination to participate in setting the buffer and the priority, the two conditions can be used in combination by giving corresponding scores and weights to the importance degree and the destination address, and the number N of the buffers is determined according to the performance of the computer system, so that the N buffers and the priority thereof are set on the basis. Assuming that the number and priority of data buffers are set only according to the performance of the computer system and the importance of data to be transmitted, if it is determined that the number of data buffers is 5 in conjunction with the performance of the computer system and the importance of data to be transmitted, 5 data buffers having different priorities are set. If the two parameters of the importance degree of the data to be transmitted and the destination address are endowed with corresponding scores and weights, if the product of the scores and the weights is used, and the number of the data buffers is determined to be 6 by combining the performance of the computer system, 6 data buffers with different priorities are set.
The number of the buffer areas is restricted by the performance of the computer system, and for example, the number of the data buffer areas is set only according to the performance of the computer system and the importance degree of data to be transmitted, if the data processing and transmission capability of the computer system can ensure that 5 threads are not lower than a preset standard at most to realize normal concurrent work to the maximum extent, the maximum number of the data buffer areas can be determined to be 5.
Wherein, each buffer zone corresponds to a data sending thread and 2 data processing threads which can complete specific functions.
Whether the transmission of the data packet between the two nodes is successful or effective is related to the quality or condition of the channel, for example, when the channel condition is poor, the data transmission rate is not suitable for high, the bit number of the check data cannot be too short, otherwise, the effective transmission of the data is affected, and the transmission resource is wasted. Therefore, in step 12, the channel condition between the transmitting end and the receiving end of the data to be transmitted is determined, and especially when the channel cannot meet the requirement of the data transmission condition at any time, the channel condition in the scheduled transmission time period or the scheduled transmission time period is especially known, so as to obtain the optimal transmission parameter of the data.
There are many ways to judge the channel condition, and this step adopts the method of selected parameter plus history statistics. That is, by collecting the selected parameter values in the scheduled time period, the channel condition between the transmitting end and the receiving end of the data to be transmitted in the predetermined transmission time period can be easily obtained. The channel condition can also be regarded as an expression of the channel quality, and one or any combination of the following parameters can be adopted, including the channel transmission rate, the failure type and the failure degree. Wherein the fault type, such as channel rule break, random break, bandwidth mutation, etc.; the failure degree, such as failure time and length, recovery period, etc. According to the parameters, the specific values and weights are divided according to the influence of the parameters on the channel transmission performance, so that the channel conditions can be judged, and the data packet sending parameters are determined. The data packet sending parameters include the size of the data packet and/or the check code and/or the compression mode and/or the compression rate and/or the data transmission baud rate, wherein the data packet sending parameters include the data packet processing parameters and the transmission parameters, and the data packet sending parameters are easily obtained through channel condition parameters through experiments and statistics.
In step 13, the control part is generated by packing the data packet transmission parameters, the data part is generated by packing the data to be transmitted, and then in step 14, the control part and the data part are combined to generate the data packet to be transmitted.
Finally, in step 15, in a predetermined time period before the data packet is sent, the data packet to be sent is sent to a corresponding data buffer area with a limited level according to the destination address and/or the importance degree of the data to be sent, and the data packet is waited for processing by the data sending thread and other data processing threads.
As described above, in order to concurrently process packets, it is necessary to set a plurality of packet processing threads in advance, and when the number of threads set in advance is appropriate to the number of tasks to be processed, it is possible to sufficiently utilize system resources. In this embodiment, since the data packets to be processed are stored in different data buffers, the number of the packet processing threads set in advance is the same as the number of the data buffers. In fact, the number of the packet processing threads is different from the number of the data buffers, so that one packet processing thread processes the packets of two data buffers, or two packet processing threads process the packets of one data buffer, and so on, can also implement the present invention.
The data buffers may also be grouped, which may increase the flexibility of packet processing for a data processing device. That is, the data buffer includes a plurality of sub-data buffers, and a plurality of sub-threads corresponding to the sub-data buffers are configured for the packet processing thread to process data in the sub-data buffers. In practice, how many sub-data buffers are required to be set for each data buffer, and whether the sub-data buffers are required to be set are determined according to actual needs. For example, if the data transmission device operating this embodiment is connected with 5 terminals, 5 parallel sub-data buffers may be set in the data buffer corresponding to the data processing device, and correspondingly, the sub-threads corresponding to the sub-data buffers are also preset according to the operation requirement. Similarly, a plurality of terminals may correspond to one sub-data buffer and further correspond to one sub-thread, or one terminal may correspond to a plurality of sub-data buffers and further correspond to a plurality of sub-threads due to different operation factors and the like.
In a particular buffer, the data packets may still be input to the corresponding queues according to their importance levels or priority levels. This embodiment is of significance in transmissions involving quality of service (QoS) guarantees. Because the data packet has the convention of transmission efficiency, the priority is set for the data packet of which the importance can be identified of different terminals or different users, and the transmission efficiency of the data packet can be ensured to a certain extent.
For example, the data packets are respectively a, B, C, d, and e, and are divided into three groups, that is, three levels, that is, A, B, C, where the levels a and B correspond to level a, the levels C and d correspond to level B, and the level e corresponds to level C, the data packet processing threads set for the level A, B, C are respectively thread a, thread B, and thread C, the CPU time slice occupied by the thread a is the largest, and the CPU time slice occupied by the thread C is the smallest, so as to ensure the fastest speed of processing the data packets of the levels a and B, and the data packets can be preferentially processed and preferentially transmitted through the transmission data buffer.
The buffer may also have more usage patterns that meet the actual situation, for example, each data buffer is divided into two parts, the first part is used for storing the data packets to be processed, and the second part is used for storing the processed data packets.
In another embodiment based on fig. 1, a compression encryption step is added between step 13 and step 14, which processes the data part by using a sliding window technique to generate a reference tag sequence of the data part, and takes the tag sequence as a new data part.
The step realizes the encryption and compression of the data to be transmitted, not only can reduce the data amount to be transmitted, but also increases the cracking difficulty. Generating the reference label may be done according to well-known methods. The method specifically comprises the following steps:
according to the repeated characteristic represented by the repeated data, such as a character string formed by specific adjacent characters, a plurality of data segments meeting the characteristic requirement are determined as much as possible, reference labels which do not repeat with each other are arranged for the data segments, the reference labels and the data segments are bound together and stored in a database, namely the relational database of the labels and the data segments.
Determining a reference label of a data sequence, determining a series of dividing points from one direction for an input data stream by dynamically adjusting the window using a fingerprint function and a window, dividing the data stream using the dividing points, cutting one or more data segments, which are identical to at least one data segment stored in the database, and assembling the new data stream with the remaining data in the data stream by replacing the cut data segments with the reference label.
For example, assuming that the data W to be transmitted is regarded as an input data stream with a direction, one or more data segments are intercepted from the inflow direction of the data or from the tail direction of the data stream after the data stream is stably input, and as long as the intercepted data segment is the same as at least one data segment stored in the first database, the data segment can be regarded as a predetermined high repetition probability data segment, and the intercepted data segment and the remaining data in the data stream can be assembled into a new data stream by using the reference tag instead of the intercepted data segment and the remaining data in the data stream according to the binding relationship between the reference tag and the data segment in the database. Because the generation of the data and the interception of the data segment can adopt related algorithms, the data segment with high repetition probability can be easily found from a random data stream, so that the data segment transmission can be replaced by the reference label, and the data volume of the actual transmission is reduced.
The segmented data segment does not take into account other data surrounding the data segment. One aspect of the above label determination process is to segment the input data, identify "segmentation points" in the segmentation process, and if a segmentation scheme is properly designed, the end points of a data segment should have the same repeatability and occur in the same place for the same data segment, regardless of what the data appears in. Therefore, repetitive data segments having common data characteristics in the data can be segmented in the same way.
One of the specific data partitioning schemes is to use information in the data itself to guide the partitioning process without imposing externally on the partitioning process the data block size, transport defining parameters, etc.
When the input data is consumed by the encoding process, various values and structures of the input data can guide the segmentation process, and by guiding segmentation of the input content for processing the input data stream, repeated data with large time span can be searched without analyzing the analyzed data again. Whenever homogeneous data is present in the input data, wherever it is, the same data segment is found, resulting in a repeated data segment without the need for repeated analysis of the data.
However, although the input data has certain data characteristics, the content of the input data is used to guide the data segmentation, and a balance point is actually found only in the contradiction between the largest size of the segmented data segment and the largest number of repeated data segments due to the randomness of the data needing to be processed each time.
The embodiment of the method for sending data provided by the invention is based on the embodiment shown in fig. 1, and the data sending thread arranged by the embodiment executes the operation of sending data. Firstly, the control part in the data packet to be transmitted is analyzed from the data packet to be transmitted, and then the data part is transmitted according to the instruction of the control part.
Data is sent over different data channels, especially in the case of concurrent data transmission. If a plurality of data transmission channels are provided, the transmission speed of the data packet can be increased by further arranging a plurality of data transmission sub-threads. In accordance with this idea, the output data buffer may be provided as a plurality of parallel sub-buffers to correspond to a plurality of packet transmitter sub-threads. In the process of sending the data packet, the reasonable sharing of system resources can be realized through the use of the sub-threads according to the needs. For example, a data packet in the sub-thread output buffer is sent by using one data packet, and when one sub-thread is not enough to complete a data sending task, the sub-thread resource occupying a lower priority level can be scheduled by the system to send data.
And when the data is sent, starting another thread, namely a functional thread at regular time, judging whether the current sending state meets the standard, and if so, continuing to operate the subsequent data packets in the buffer area according to system scheduling. Or, if the standard is met, the thread may temporarily end running or continue to determine whether the sending threads of other buffers are working normally, without affecting the running of the current data sending thread. This standard may be set according to the system environment, for example, the specific standard may be: normally sending data, the error rate is less than a predetermined value (set according to the requirement on the data), the number of data retransmissions is less than a predetermined value, the peer response delay is less than a predetermined value, and so on.
The thread for determining whether the transmission state meets the criterion may be started at a specific time according to the instruction of the control unit parameter, or started according to the response of the data receiving end, or the like.
If the sending state of the current data sending thread does not meet the standard, another functional thread is called to continue the subsequent data packet processing operation according to the standard reaching degree, for example, the sending is continued, or the sending is continued after the parameters are adjusted.
The processing can have various adaptive subsequent processing modes according to the degree of the failure of the standard, such as: a subsequent processing manner may refer to step 12 to step 14 of the embodiment shown in fig. 1, that is, resetting the packet transmission parameters according to the channel conditions, packing the packet transmission parameter generation control part, combining the control part and the original data part to generate a new data packet to be sent, and sending the new data packet to the original buffer or sending the new data packet to another buffer to be sent. The second subsequent processing mode only recombines the control part and the data part to generate a data packet to be sent, and sends the data packet to the original buffer area or other buffer areas to be sent, namely only adjusts the level and the processing sequence; and so on.
Claims (7)
1. A method for processing data to be transmitted, comprising:
setting a plurality of data buffers and priorities thereof according to the performance of the computer system and the importance degree and/or destination address of the data;
acquiring channel condition parameters of a preset sending time period between a sending end and a receiving end of data to be sent, and setting data packet sending parameters according to the channel condition parameters;
the data packet transmission parameter generation control part is packaged, the data to be transmitted is packaged to generate a data part, and the control part and the data part are combined to generate a data packet to be transmitted;
and transmitting the data packet to be transmitted to a corresponding data buffer area according to the importance degree and/or the destination address of the data to be transmitted in a preset time period.
2. The method for processing data to be transmitted according to claim 1, characterized in that:
and judging the channel condition according to the channel sending rate and/or the fault type and/or the fault degree.
3. The method for processing data to be transmitted according to claim 1 or 2, characterized in that:
the data packet sending parameters comprise the size of the data packet and/or a check code and/or a compression mode and/or a compression rate and/or a data transmission baud rate.
4. The method for processing data to be transmitted according to claim 3, further comprising:
and processing the data part by utilizing a sliding window technology, and generating a reference label sequence of the data part, wherein the label sequence is used as a new data part.
5. A method of transmitting data, comprising:
a data part for sending the data packet to be sent according to the instruction of the control part of the data packet to be sent;
and judging whether the sending state meets the standard, if so, continuing to operate the subsequent data packet in the buffer area according to system scheduling, and otherwise, continuing to process the subsequent data packet according to the standard reaching degree.
6. The method of transmitting data according to claim 5, wherein:
the timing is determined, or the transmission state is determined to meet the standard at a specific time according to the instruction of the control part parameter, or the response of the data receiving end.
7. The method of transmitting data according to claim 6, wherein:
the subsequent packet processing comprises: recombining the control part and the data part to generate a data packet to be sent, and sending the data packet to the original buffer area or sending the data packet to other buffer areas to be sent; or resetting data packet transmission parameters according to the channel conditions, packaging the data packet transmission parameters to generate a control part, combining the control part and the original data part to generate a new data packet to be transmitted, and transmitting the new data packet to the original buffer area or transmitting the new data packet to other buffer areas to be transmitted.
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