CN101771494A - Data transmission method and data transmission device - Google Patents
Data transmission method and data transmission device Download PDFInfo
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- CN101771494A CN101771494A CN200810241876A CN200810241876A CN101771494A CN 101771494 A CN101771494 A CN 101771494A CN 200810241876 A CN200810241876 A CN 200810241876A CN 200810241876 A CN200810241876 A CN 200810241876A CN 101771494 A CN101771494 A CN 101771494A
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Abstract
The embodiment of the invention relates to a data transmission method. In the method, according to the indication information of a first data point where the transmission of task data is interrupted, a second data point in transmitted data prior to the first data point is determined as a starting point for the retransmission of the task data so as to retransmit the task data from the starting point. In addition, the embodiment of the invention also provides a data transmission device. The embodiment of the invention can realize broken-point continuingly-transferring in data transmission so as to improve the quality of service of a system.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of data transmission method and device.
Background technology
Along with the development of the network communications technology, the technology that is applied to field of data transmission is maked rapid progress, and provides technical foundation for solving the diverse network bursting problem.
In existing data transmission procedure, problems such as node outage, fault appear in communication system easily, and these problems might cause transfer of data to be interrupted, thereby greatly reduce data transmission efficiency, reduce the system service quality, reduced the satisfaction of user data transport service.
Summary of the invention
Embodiment of the invention technical problem to be solved is, a kind of data transmission method and device are provided, and can realize the breakpoint transmission in the transfer of data, thereby improves the system service quality.
For solving the problems of the technologies described above, the embodiment of the invention adopts following technical scheme:
A kind of data transmission method comprises:
The indication information of first data point of interrupting according to task data transmission is determined to transmit in the data second data point as the starting point of transmitting described task data again before described first data point;
Again transmit described task data with described starting point.
A kind of data transmission device comprises:
Determining unit is used for the indication information of first data point of interrupting according to task data transmission, determines to transmit in the data second data point as the starting point of transmitting described task data again before described first data point;
Transmission unit is used to transmit described task data.
The beneficial effect of the embodiment of the invention is:
By transmit the indication information of first data point of interrupting according to task data, determine to transmit in the data second data point as the starting point of transmitting described task data again before described first data point, again transmit described task data with described starting point, can realize the breakpoint transmission in the transfer of data like this, thereby raising data transmission efficiency, improve the system service quality, improve the satisfaction of user data transport service.
Below in conjunction with accompanying drawing the embodiment of the invention is described in further detail.
Description of drawings
Fig. 1 is the main flow chart of the data transmission method of the embodiment of the invention;
Fig. 2 be in the embodiment of the invention first data point and second data point concern schematic diagram;
Fig. 3 is the first specific embodiment schematic diagram of data transmission method of the present invention;
Fig. 4 is the second specific embodiment schematic diagram of data transmission method of the present invention;
Fig. 5 is the primary structure figure of the data transmission device of the embodiment of the invention;
Fig. 6 is the first specific embodiment schematic diagram of data transmission device of the present invention;
Fig. 7 is the second specific embodiment schematic diagram of data transmission device of the present invention.
Embodiment
Fig. 1 is the main flow chart of the data transmission method of the embodiment of the invention, and with reference to this figure, this method mainly comprises:
101, the indication information of first data point of interrupting according to task data transmission is determined to transmit in the data second data point as the starting point of transformation task data again before first data point;
Particularly, task data can be at file, whole catalogue, database or mail etc.; Transmission can be an one-way transmission, and one-way transmission can adopt the passage of one-way transmission, can have one or more nodes in the passage of this one-way transmission, and some equipment can be unidirectional transmission equipment in this node; Indication information can be a Data Transmission Controlling information; The relation of first data point and second data point can be as shown in Figure 2, indicated transmitting data, transmitting second data point in the data of (also can being called before interrupting) before the transmission direction of task data, task data, first data point (also can be called the point of interruption) that the task data transmission is interrupted, first data point among Fig. 2, and need the data transmitted again, the starting point that the data that these needs transmit are again transmitted as task data again with second data point in the task data;
102, with 101 starting points of determining transformation task data again.
Certainly, all can adopt the data transmission method of the embodiment of the invention at each task data in a plurality of task datas.
Implement the data transmission method of the embodiment of the invention as shown in Figure 1, indication information by 101 first data points that transmission is interrupted according to task data, determine to transmit in the data second data point as the starting point of transmitting described task data again before described first data point, 102 transmit described task data again with described starting point, can realize the breakpoint transmission in the transfer of data like this, thereby raising data transmission efficiency, improve the system service quality, improve the satisfaction of user data transport service.
Traditional safing method promptly carries out being copied, being pasted by the data that manually will need to shift in the information exchange in the network of different level of securitys, thereby is implemented in the internetwork information exchange of two different level of securitys.For automaticdata transmission between the network of realizing two different level of securitys, the theory of data one-way transmission is arisen at the historic moment, and below in conjunction with the field of one-way transmission, the data transmission method of the embodiment of the invention is further specified.
Fig. 3 is the first specific embodiment schematic diagram of data transmission method of the present invention, and with reference to this figure, this method mainly comprises:
301, during the transmission of source end initiating task data, at first task data being carried out subpackage handles, obtain the set of packet, particularly, task data can be carried out orderly piecemeal, and each piecemeal is added the header packet information of fixed size (as 64 bytes), form the identical packet of some sizes (being the 8K byte as each packet size), wherein, header packet information includes but are not limited to:
The bag synchronous characteristic sign indicating number that is used for designation data bag original position, destination can be known the original position of each packet by bag synchronous characteristic sign indicating number;
Be used for identifying the packet sequence number of each packet at the relative position of whole task data;
Be used to identify the packet size information of each packet effective length;
Be used for the packet relative position sign that identification data wraps in whole task data relative position of living in, relative position can comprise original position, centre position, the end position in the task data, and destination can judge whether the complete task data of having collected by packet relative position sign;
In addition, when having the task data of a plurality of needs transmission, task data is surrounded by in the header packet information of packet of preface piecemeal gained and can also comprises:
Be used for when a plurality of task data of transmission, distinguishing the task identification of each task;
302, the transmission thread of source end initiating task data, one or more channel transfer of packet being passed through the one-way transmission network are to destination;
303, after destination receives packet,,, rearrange packet in order as bag synchronous characteristic sign indicating number, packet sequence number, task identification etc. according to the header packet information in the packet;
304, when the source end detects task data transmission interruption, the indication information of first data point that transmission is interrupted according to task data, and packet size, the estimated value of data in buffer amount during the Network Transmission task data, determine and first data point between the data volume that differs more than or equal to estimated value one the transmission starting point of data packets for transmission as second data point, particularly, indication information can be a Data Transmission Controlling information, but when the position (i.e. first data point) that transmission is interrupted and interrupted has taken place in these Data Transmission Controlling information logger task data, because network exists cache node and propagation delay time, so all can a certain amount of data of buffer memory during the Network Transmission task data, the value of certain data volume of buffer memory when so above-mentioned estimated value promptly is predefined Network Transmission task data;
Describe with an object lesson below, task data is divided into n packet (serial number), the transmission of packet from 1 to n, the source end detects the transmission interruption has taken place when m packet of transmission, Data Transmission Controlling information is promptly noted first data point, each packet size (except that last packet) is a, and according to packet size a and estimated value Y, the packet sequence number x that calculates the previous data packets for transmission of m packet is:
x＝[Y/a+1]+Z，
Wherein, Z is a nonnegative integer, and [] expression rounds, for example, when packet size a greater than estimated value Y, Z is 0 o'clock, the x value is 1; When estimated value Y is 3.4 times of packet size a, Z is 2 o'clock, and the x value is 6, or the like;
Afterwards, can determine with before m the packet first the transmission starting point of data packets for transmission (its sequence number is m-1) as second data point, and with second data point transformation task data again; Can also determine with the 6th before m the packet the transmission starting point of data packets for transmission (its sequence number is m-6) as second data point, or the like;
305, the source end is eliminated in outage, but during normal transmission, as starting point transformation task data again, promptly first data point when interrupting return back to second data point, with transmission thread transformation task data again with 304 second data points of determining;
306, because the source end is with second data point transformation task data again, destination might repeat to have received identical packet, so destination abandons the packet of repetition according to the header packet information of packet, and packet is arranged;
307, repeat above-mentioned steps, finish up to last data packet transmission of task data;
308, the source end transmits the redundant data piece of above-mentioned estimated value size data amount after the task transfer of data is finished, and the redundant data piece can have special identifier to be different from task data;
309, if 308 redundant data piece transmission success can determine that then this task data transmission success finishes, if the bust this of redundant data piece is transmitted again according to 304,305 principle, so circulation is finished up to redundant data piece transmission success.
Implement the data transmission method of the embodiment of the invention as shown in Figure 3, by 306 when the source end detects task data transmission and interrupts, the indication information of first data point that transmission is interrupted according to task data, and packet size, the estimated value of data in buffer amount during the Network Transmission task data, determine and first data point between the data volume that differs more than or equal to estimated value one the transmission starting point of data packets for transmission as second data point, 305 source ends are eliminated in outage, but during normal transmission, with 304 second data points of determining as starting point transformation task data again, can realize the breakpoint transmission in the task data transmission like this, thereby raising data transmission efficiency, improve the system service quality, improve the satisfaction of user data transport service; In addition, 308 source ends transmit the redundant data piece of above-mentioned estimated value size data amount after the task transfer of data is finished, further the integrality of bonding transfer of data under transmission environment.
Fig. 4 is the second specific embodiment schematic diagram of data transmission method of the present invention, and with reference to this figure, this method mainly comprises:
401, during the transmission of source end initiating task data, at first organize the synchronization packets of a fixed size (as 64 bytes), described synchronization packets includes but are not limited to:
Be used to indicate the bag synchronous characteristic sign indicating number of synchronization packets original position, destination can be according to the original position of bag synchronous characteristic sign indicating number identification synchronization packets;
Be used for indicating the skew sign of the follow-up data of synchronization packets at the relative position of task data, the skew sign is used for identifying the relative position of the data of the follow-up transmission of synchronization packets in whole task data;
Be used to identify the synchronization packets size information of each synchronization packets effective length;
In addition, when having the task data of a plurality of needs transmission, can also comprise in the synchronization packets:
Be used for when a plurality of task data of transmission, distinguishing the task identification of each task;
402, source end initiating task transfer of data thread is by the single passage of one-way transmission network, to destination transmitting synchronous packet;
403, the source termination the transformation task data, and has transmitted the size of data in the logger task data, the skew of the original position of the relative task data transmission of data to be transmitted in the sign task data;
404, destination as bag synchronous characteristic sign indicating number, skew sign, synchronization packets size information, task identification etc., is arranged task data according to the information in the synchronization packets that receives;
405, when the source end detects task data transmission interruption, the indication information of first data point that transmission is interrupted according to task data, and the estimated value of data in buffer amount during the Network Transmission task data, determine and first data point between the data volume that differs more than or equal to a data point of estimated value as second data point, particularly, indication information can be a Data Transmission Controlling information, but when the position (i.e. first data point) that transmission is interrupted and interrupted has taken place in these Data Transmission Controlling information logger task data, because network exists cache node and propagation delay time, so all can a certain amount of data of buffer memory during the Network Transmission task data, the value of certain data volume of buffer memory when so above-mentioned estimated value promptly is predefined Network Transmission task data;
406, the source end is eliminated in outage, but during normal transmission, the principle as 401, the source end is organized a synchrodata bag again, and this synchronization packets is sent to destination;
407, as starting point transformation task data again, first data point during promptly from interruption return back to second data point to the source end, with transmission thread transformation task data again with 405 second data points of determining;
408, because the source end is with second data point transformation task data again, destination might repeat to have received identical data, so destination abandons the data of repetition according to the information of synchronization packets, and task data is arranged;
409, repeat above-mentioned steps, finish up to last transfer of data of task data;
410, the source end transmits the redundant data piece of above-mentioned estimated value size data amount after the task transfer of data is finished, and the redundant data piece can have special identifier to be different from task data;
411, if 410 redundant data piece transmission success can determine that then this task data transmission success finishes, if redundant data piece bust this, principle according to 405,406,407 is transmitted again, and so circulation is finished up to redundant data piece transmission success.
Implement the data transmission method of the embodiment of the invention as shown in Figure 4, by 405 when the source end detects task data transmission and interrupts, the indication information of first data point that transmission is interrupted according to task data, and the estimated value of data in buffer amount during the Network Transmission task data, determine and first data point between the data volume that differs more than or equal to a data point of estimated value as second data point, 406 source ends are eliminated in outage, but during normal transmission, the source end is organized a synchrodata bag again, and this synchronization packets sent to destination, 407 source ends with 405 second data points of determining as starting point transformation task data again, can realize the breakpoint transmission in the task data transmission like this, thereby the raising data transmission efficiency improves the system service quality, improves the satisfaction of user to data transport service; In addition, 410 source ends transmit the redundant data piece of above-mentioned estimated value size data amount after the task transfer of data is finished, further the integrality of bonding transfer of data under transmission environment.
Data transmission device to the embodiment of the invention describes below.
Fig. 5 is the primary structure figure of the data transmission device of the embodiment of the invention, and with reference to this figure, this device mainly comprises determining unit 501, transmission unit 502, wherein:
Determining unit 501 links to each other with transmission unit 502;
Determining unit 501, the indication information of first data point of interrupting according to task data transmission is determined to transmit in the data second data point as the starting point of transformation task data again before first data point;
Particularly, task data can be at file, whole catalogue, database or mail etc.; Transmission can be an one-way transmission, and one-way transmission can adopt the passage of one-way transmission, can have one or more nodes in the passage of this one-way transmission, and some equipment can be unidirectional transmission equipment in this node; Indication information can be a Data Transmission Controlling information; The relation of first data point and second data point can repeat no more as shown in Figure 2 herein;
Implement the data transmission device of the embodiment of the invention as shown in Figure 5, indication information by determining unit 501 first data point that transmission is interrupted according to task data, determine to transmit in the data second data point as the starting point of transformation task data again before first data point, the starting point that transmission unit 502 is determined with determining unit 501 is the transformation task data again, can realize the breakpoint transmission in the transfer of data like this, thereby raising data transmission efficiency, improve the system service quality, improve the satisfaction of user data transport service.
Fig. 6 is the first specific embodiment schematic diagram of data transmission device of the present invention, and with reference to this figure, this device is the source end of data, mainly comprises subpackage unit 601, determining unit 602, transmission unit 603, wherein:
The bag synchronous characteristic sign indicating number that is used for designation data bag original position, destination can be known the original position of each packet by bag synchronous characteristic sign indicating number;
Be used for identifying the packet sequence number of each packet at the relative position of whole task data;
Be used to identify the packet size information of each packet effective length;
Be used for the packet relative position sign that identification data wraps in whole task data relative position of living in, relative position can comprise original position, centre position, the end position in the task data, and destination can judge whether the complete task data of having collected by packet relative position sign;
In addition, when having the task data of a plurality of needs transmission, task data is surrounded by in the header packet information of packet of preface piecemeal gained and can also comprises:
Be used for when a plurality of task data of transmission, distinguishing the task identification of each task;
Determining unit 602, when detecting task data transmission interruption, the indication information of first data point that transmission is interrupted according to task data, and packet size, the estimated value of data in buffer amount during the Network Transmission task data, determine and first data point between the data volume that differs more than or equal to estimated value one the transmission starting point of data packets for transmission as second data point, particularly, indication information can be a Data Transmission Controlling information, but when the position (i.e. first data point) that transmission is interrupted and interrupted has taken place in these Data Transmission Controlling information logger task data, because network exists cache node and propagation delay time, so all can a certain amount of data of buffer memory during the Network Transmission task data, the value of certain data volume of buffer memory when so above-mentioned estimated value promptly is predefined Network Transmission task data;
Describe with an object lesson below, task data is divided into n packet (serial number), the transmission of packet from 1 to n, detect the transmission interruption has taken place when m packet of transmission, Data Transmission Controlling information is promptly noted first data point, each packet size (except that last packet) is a, and according to packet size a and estimated value Y, the packet sequence number x that calculates the previous data packets for transmission of m packet is:
x＝[Y/a+1]+Z，
Wherein, Z is a nonnegative integer, and [] expression rounds, for example, when packet size a greater than estimated value Y, Z is 0 o'clock, the x value is 1; When estimated value Y is 3.4 times of packet size a, Z is 2 o'clock, and the x value is 6, or the like;
Afterwards, can determine with before m the packet first the transmission starting point of data packets for transmission (its sequence number is m-1) as second data point, and with second data point transformation task data again; Can also determine with the 6th before m the packet the transmission starting point of data packets for transmission (its sequence number is m-6) as second data point, or the like;
Because transmission unit 603 is with second data point transformation task data again, destination might repeat to have received identical packet, so destination abandons the packet of repetition according to the header packet information of packet, and packet is arranged;
In the end of source really order unit 602, transmission unit 603 repeat above-mentioned steps, finish up to last data packet transmission of task data;
If transmission unit 603 redundant data piece transmission success, can determine that then this task data transmission success finishes, if redundant data piece bust this, transmission unit 603 transmits again according to the principle that task data is transmitted, so circulation is finished up to redundant data piece transmission success.
Implement the data transmission device of the embodiment of the invention as shown in Figure 6, by determining unit 602 when detecting task data transmission and interrupt, the indication information of first data point that transmission is interrupted according to task data, and packet size, the estimated value of data in buffer amount during the Network Transmission task data, determine and first data point between the data volume that differs more than or equal to estimated value one the transmission starting point of data packets for transmission as second data point, transmission unit 603 is eliminated in outage, but during normal transmission, second data point of determining with determining unit 602 is as starting point transformation task data again, can realize the breakpoint transmission in the task data transmission like this, thereby raising data transmission efficiency, improve the system service quality, improve the satisfaction of user data transport service; In addition, transmission unit 603 transmits the redundant data piece of above-mentioned estimated value size data amount after the task transfer of data is finished, further the integrality of bonding transfer of data under transmission environment.
Fig. 7 is the second specific embodiment schematic diagram of data transmission device of the present invention, with reference to this figure, this device mainly comprises synchronization packets OU 701, determining unit 702, transmission unit 703, and transmission unit 703 comprises synchrodata packet transmission unit, task data transmission unit, wherein:
When synchronization packets OU 701, the transmission of initiating task data, at first organize the synchronization packets of a fixed size (as 64 bytes), described synchronization packets includes but are not limited to:
Be used to indicate the bag synchronous characteristic sign indicating number of synchronization packets original position, destination can be according to the original position of bag synchronous characteristic sign indicating number identification synchronization packets;
Be used for indicating the skew sign of the follow-up data of synchronization packets at the relative position of task data, the skew sign is used for identifying the relative position of the data of the follow-up transmission of synchronization packets in whole task data;
Be used to identify the synchronization packets size information of each synchronization packets effective length;
In addition, when having the task data of a plurality of needs transmission, can also comprise in the synchronization packets:
Be used for when a plurality of task data of transmission, distinguishing the task identification of each task;
The synchrodata packet transmission unit, initiating task transfer of data thread is by the single passage of one-way transmission network, to destination transmitting synchronous packet;
The task data transmission unit is followed the transformation task data, and has transmitted the size of data in the logger task data, the skew of the original position of the relative task data transmission of data to be transmitted in the sign task data;
Destination as bag synchronous characteristic sign indicating number, skew sign, synchronization packets size information, task identification etc., is arranged task data according to the information in the synchronization packets that receives;
Determining unit 702, when detecting task data transmission interruption, the indication information of first data point that transmission is interrupted according to task data, and the estimated value of data in buffer amount during the Network Transmission task data, determine and first data point between the data volume that differs more than or equal to a data point of estimated value as second data point, particularly, indication information can be a Data Transmission Controlling information, but when the position (i.e. first data point) that transmission is interrupted and interrupted has taken place in these Data Transmission Controlling information logger task data, because network exists cache node and propagation delay time, so all can a certain amount of data of buffer memory during the Network Transmission task data, the value of certain data volume of buffer memory when so above-mentioned estimated value promptly is predefined Network Transmission task data;
The synchrodata packet transmission unit is eliminated in outage, but during normal transmission, organizes a synchrodata bag again, and this synchronization packets is sent to destination;
Task data transmission unit, second data point of determining with determining unit 702 be as starting point transformation task data again, and promptly first data point when interrupting return back to second data point, with transmission thread transformation task data again;
Because the task data transmission unit is with second data point transformation task data again, destination might repeat to have received identical data, so destination abandons the data of repetition according to the information of synchronization packets, and task data is arranged;
In the end of source really order unit 702, transmission unit 703 repeat above-mentioned steps, finish up to last transfer of data of task data;
Transmission unit in the end of source also comprises a redundant data piece transmission unit, after the task transfer of data is finished, transmits the redundant data piece of above-mentioned estimated value size data amount, and the redundant data piece can have special identifier to be different from task data;
If redundant data piece transmission unit transmission of redundant data piece success, can determine that then this task data transmission success finishes, if redundant data piece bust this, redundant data piece transmission unit transmits again according to the principle that task data is transmitted, so circulation is finished up to redundant data piece transmission success.
Implement the data transmission device of the embodiment of the invention as shown in Figure 7, by determining unit 702 when detecting task data transmission and interrupt, the indication information of first data point that transmission is interrupted according to task data, and the estimated value of data in buffer amount during the Network Transmission task data, determine and first data point between the data volume that differs more than or equal to a data point of estimated value as second data point, eliminate in outage, but during normal transmission, synchronization packets OU 701 is organized a synchrodata bag again, and this synchronization packets is sent to destination by the synchrodata packet transmission unit, second data point that the task data transmission unit is determined with determining unit 702 is as starting point transformation task data again, can realize the breakpoint transmission in the task data transmission like this, thereby raising data transmission efficiency, improve the system service quality, improve the satisfaction of user data transport service; In addition, redundant data piece transmission unit transmits the redundant data piece of above-mentioned estimated value size data amount after the task transfer of data is finished, further the integrality of bonding transfer of data under transmission environment.
Need to prove that the data transmission method of the embodiment of the invention and device are not limited only to the field of one-way transmission, the field of transmitted in both directions is suitable for too.
In addition, above-mentioned one-way transmission is meant that mainly information is transferred to second network from first network uni-directional, and during specific implementation, first network can be the higher public security net of level of security, second network can be the lower the Internet of level of security, information can only be carried out one-way transmission from the public security net to the Internet, can prevent that like this public security net security information from destroyed by the hacker; Perhaps, first network can be the lower electrical production net of level of security, second network can be the higher electrical management net of level of security, and information can only be carried out one-way transmission to the electrical management net from the electrical production net, can prevent that like this electrical management net security information from being divulged a secret.Effect highly significant when therefore, the method for the embodiment of the invention and device are at one-way transmission.
In addition, one of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method, be to instruct relevant hardware to finish by program, described program can be stored in the computer-readable recording medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-OnlyMemory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
The above is the specific embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also are considered as protection scope of the present invention.
Claims (10)
1. a data transmission method is characterized in that, comprising:
The indication information of first data point of interrupting according to task data transmission is determined to transmit in the data second data point as the starting point of transmitting described task data again before described first data point; Again transmit described task data with described starting point.
2. the method for claim 1 is characterized in that, described first data point and described second
The estimated value of the data volume that differs between data point data in buffer amount during more than or equal to the described task data of Network Transmission.
3. method as claimed in claim 2 is characterized in that, this method also comprises:
Described task data is carried out subpackage handle the set that obtains packet, described packet comprises header packet information, and described header packet information comprises bag synchronous characteristic sign indicating number, packet sequence number, the packet size information that is used to indicate described packet original position;
Describedly determine with second data point in the transmission data before described first data point as transmitting again
The starting point of described task data is specially:
According to packet size and described estimated value, determine and described first data point between the data volume that differs more than or equal to described estimated value one the transmission starting point of data packets for transmission as described second data point.
4. method as claimed in claim 2 is characterized in that, this method also comprises:
Before the transmission of described task data or described task data transmit again before the transmitting synchronous packet, described synchronization packets comprises the bag synchronous characteristic sign indicating number that is used for indicating described synchronization packets original position, is used to indicate skew sign, the synchronization packets size information of the follow-up data of described synchronization packets at the relative position of described task data;
Describedly determine with second data point in the transmission data before described first data point as transmitting again
The starting point of described task data is specially:
According to described estimated value, determine and described first data point between the data volume that differs more than or equal to a data point of described estimated value as described second data point.
5. as each described method in the claim 2 to 4, it is characterized in that this method also comprises: after described task data transmission is finished, transmit the redundant data piece of described estimated value size data amount.
6. as each described method in the claim 1 to 4, it is characterized in that, described task data be transmitted as one-way transmission.
7. a data transmission device is characterized in that, comprising:
Determining unit is used for the indication information of first data point of interrupting according to task data transmission, determines to transmit in the data second data point as the starting point of transmitting described task data again before described first data point;
Transmission unit is used to transmit described task data.
8. device as claimed in claim 7 is characterized in that, the estimated value of the data volume that differs between described first data point and described second data point data in buffer amount during more than or equal to the described task data of Network Transmission.
9. device as claimed in claim 8 is characterized in that, this device also comprises:
The subpackage unit, be used for that described task data is carried out subpackage and handle the set that obtains packet, described packet comprises header packet information, and described header packet information comprises bag synchronous characteristic sign indicating number, packet sequence number, the packet size information that is used to indicate described packet original position
Described determining unit is according to packet size and described estimated value, determine and described first data point between the data volume that differs more than or equal to described estimated value one the transmission starting point of data packets for transmission as described second data point.
10. device as claimed in claim 8 is characterized in that, described transmission unit comprises:
The task data transmission unit is used to transmit described task data;
The synchrodata packet transmission unit, be used for before the transmission of described task data or described task data transmit again before the transmitting synchronous packet, described synchronization packets comprises the bag synchronous characteristic sign indicating number that is used for indicating described synchronization packets original position, is used to indicate skew sign, the synchronization packets size information of the follow-up data of described synchronization packets at the relative position of described task data
Described determining unit is according to described estimated value, determine and described first data point between the data volume that differs more than or equal to a data point of described estimated value as described second data point.
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| CN102355342A (en) * | 2011-10-19 | 2012-02-15 | 山东中创软件工程股份有限公司 | Method for sending and receiving message and device |
| CN102739357A (en) * | 2012-05-30 | 2012-10-17 | 深圳市通盛网络技术有限公司 | Data error-free transmission processing method |
| CN108804681A (en) * | 2018-06-12 | 2018-11-13 | 北京奇虎科技有限公司 | A kind of data adaptive transmission method, device and computer storage media |
| WO2019019897A1 (en) * | 2017-07-28 | 2019-01-31 | 北京京东尚科信息技术有限公司 | Data processing system, method and apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102355342A (en) * | 2011-10-19 | 2012-02-15 | 山东中创软件工程股份有限公司 | Method for sending and receiving message and device |
| CN102739357A (en) * | 2012-05-30 | 2012-10-17 | 深圳市通盛网络技术有限公司 | Data error-free transmission processing method |
| CN102739357B (en) * | 2012-05-30 | 2015-09-23 | 深圳市通盛网络技术有限公司 | data error-free transmission processing method |
| WO2019019897A1 (en) * | 2017-07-28 | 2019-01-31 | 北京京东尚科信息技术有限公司 | Data processing system, method and apparatus |
| US11588890B2 (en) | 2017-07-28 | 2023-02-21 | Beijing Jingdong Shangke Information Technology Co., Ltd. | System, method and apparatus having a redundant cluster for processing data |
| CN108804681A (en) * | 2018-06-12 | 2018-11-13 | 北京奇虎科技有限公司 | A kind of data adaptive transmission method, device and computer storage media |
| CN108804681B (en) * | 2018-06-12 | 2021-06-08 | 北京奇虎科技有限公司 | Data self-adaptive transmission method and device and computer storage medium |
| CN112291317A (en) * | 2020-10-19 | 2021-01-29 | 深圳市广和通无线股份有限公司 | Data downloading method and device, computer equipment and storage medium |
| CN112291317B (en) * | 2020-10-19 | 2023-11-24 | 深圳市广和通无线股份有限公司 | Data downloading method, device, computer equipment and storage medium |
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