CN106982165A - Data compression method and its system - Google Patents
Data compression method and its system Download PDFInfo
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- CN106982165A CN106982165A CN201610027489.0A CN201610027489A CN106982165A CN 106982165 A CN106982165 A CN 106982165A CN 201610027489 A CN201610027489 A CN 201610027489A CN 106982165 A CN106982165 A CN 106982165A
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- 238000013144 data compression Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000012856 packing Methods 0.000 claims abstract description 9
- 238000007906 compression Methods 0.000 claims description 40
- 230000006835 compression Effects 0.000 claims description 40
- 238000011084 recovery Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 14
- 230000007257 malfunction Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000005538 encapsulation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/32—Flow control; Congestion control by discarding or delaying data units, e.g. packets or frames
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/36—Flow control; Congestion control by determining packet size, e.g. maximum transfer unit [MTU]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Communication Control (AREA)
Abstract
The invention discloses a kind of data compression method and its system, methods described includes：Ergodic data bag, obtains the offset, redundancy word joint number and redundance character of each redundant data block；The packing of the offset of each redundant data block, redundancy word joint number and redundance character is generated into corresponding packet header；Number generation packet header quantity according to the packet header；Obtaining includes the header field of the packet header quantity and packet header；The header field is inserted before packet；Delete the redundant data block in packet.The present invention indicates the attribute of redundant data block by increasing header field, redundant data block is deleted in the packet, the space-consuming of packet can be reduced, it can reduce network load and the data traffic consumed in transmission, improve transmission stability and transmission speed, the probability that reduction packet malfunctions in transmitting procedure.
Description
Technical field
The present invention relates to data processing field, more particularly to a kind of data compression method and its system.
Background technology
During Vehicular satellite locating and monitoring terminal provides the various remote services such as position tracking, vehicle-mounted end
It is that data interaction carried out by mobile network according to the communications protocol made an appointment between end and monitoring server
, communications protocol species is various, and form differs, but they all can not because following fixed protocol format
What is avoided has a problem that --- the protocol data content of encapsulation contains larger redundancy, this redundancy
Degree shows as continuous multiple identical bytes.Frequent data item between car-mounted terminal and monitoring server is interacted will
Make the harmfulness amplification that this redundancy brings, it not only increases network load, consumption data flow, and
The reliability of data transfer can be reduced, particularly in the relatively limited communication environment of this bandwidth ratio of mobile network,
This network burden brought by redundant data is more very important.
In the patent document of Application No. 201210572738.6, it is proposed that a kind of network data compression method
And system.Methods described includes：Judge whether the corresponding type of network data belongs to pre- by data sending terminal
If network traffics type, if so, then realizing that the compression of network data obtains described using network proxy cache
The corresponding identification information of network data, and the identification information is transmitted, if it is not, then being deleted using network redundancy
Handle the compression to realize network data and obtain the corresponding finger print information of the network data, and transmit the finger
Line information；The finger print information and identification information are received by data receiver, and according to the identification information
The network data for being once cached in the data receiver is extracted, network redundancy is recovered according to the finger print information and deleted
Except the network data of before processing；Converge network data corresponding to the identification information and the corresponding net of finger print information
Network data.This method is analyzed and transmitted to data block respectively, if but beacon information or finger print information loss,
The data then recovered are incomplete.
The content of the invention
The technical problems to be solved by the invention are：A kind of data compression method and its system are provided, reduce net
Network is loaded, and improves the efficiency and reliability of data transfer.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：A kind of data compression method,
Including
Ergodic data bag, obtains the offset, redundancy word joint number and redundance character of each redundant data block；
The packing of the offset of each redundant data block, redundancy word joint number and redundance character is generated into corresponding packet header
；Number generation packet header quantity according to the packet header；Acquisition includes the packet header quantity and packet header
The header field of item；
The header field is inserted before packet；
Delete the redundant data block in packet.
The invention further relates to a kind of data compression system, including
First acquisition module, for ergodic data bag, obtains offset, the redundancy word of each redundant data block
Joint number and redundance character；
First generation module, for by the offset of each redundant data block, redundancy word joint number and redundance character
The corresponding packet header of packing generation；
Second generation module, for the number generation packet header quantity according to the packet header；
Second acquisition module, includes the header field of the packet header quantity and packet header for obtaining；
Module is inserted, for inserting the header field before packet；
Removing module, for deleting the redundant data block in packet.
The beneficial effects of the present invention are：The attribute of redundant data block is indicated by increasing header field,
Redundant data block is deleted in packet, the space-consuming of packet can be reduced, can reduce network in transmission bears
The data traffic for carrying and being consumed, improves transmission stability and transmission speed, reduction packet is in transmitting procedure
The probability of middle error.
Brief description of the drawings
Fig. 1 is a kind of flow chart of data compression method of the invention；
Fig. 2 is the method flow diagram of the embodiment of the present invention one；
Fig. 3 is the redundant data block schematic diagram of the embodiment of the present invention one；
Fig. 4 is the header field encapsulation schematic diagram of the embodiment of the present invention one；
Fig. 5 is a kind of structural representation of data compression system of the invention；
Fig. 6 is the system structure diagram of the embodiment of the present invention two.
Label declaration：
1st, the first acquisition module；2nd, the first generation module；3rd, the second generation module；4th, second mould is obtained
Block；5th, module is inserted；6th, removing module；7th, sending module；8th, receiving module；9th, grand master pattern is gone back in parsing
Block.
Embodiment
To describe technology contents, the objects and the effects of the present invention in detail, below in conjunction with embodiment simultaneously
Accompanying drawing is coordinated to be explained in detail.
The design of most critical of the present invention is：Packet header is added in the packet, to mark redundant data in number
According to the position occurred in bag, byte number and character, i.e., with shorter packet header, longer redundant data is replaced,
Realize the purpose of redundant data compression.
Referring to Fig. 1, a kind of data compression method, including
Ergodic data bag, obtains the offset, redundancy word joint number and redundance character of each redundant data block；
The packing of the offset of each redundant data block, redundancy word joint number and redundance character is generated into corresponding packet header
；Number generation packet header quantity according to the packet header；Acquisition includes the packet header quantity and packet header
The header field of item；
The header field is inserted before packet；
Delete the redundant data block in packet.
It was found from foregoing description, the beneficial effects of the present invention are：Redundant data block is represented by header field
Attribute and the foundation as reduction redundant data block, realize the compression of redundant data block, improve transmission steady
Qualitative and transmission speed, the probability that reduction packet malfunctions in transmitting procedure.
Further, it is described " header field to be inserted before packet；Delete the redundant digit in packet
According to block " also include afterwards：
Transmitting terminal obtains the packet after compression, and is sent to receiving terminal；Packet after the compression includes
The header field and the packet delete the data block obtained after redundant data block.
Seen from the above description, the packet into transmission link has deleted redundant data block, reduces network
Load and data traffic, and the length of redundant data block is longer, the ratio of compression is bigger, the resource of saving
Also it is more.
Further, after described " transmitting terminal obtains the packet after compression, and is sent to receiving terminal " also
Including：
Receiving terminal receives the packet after the compression, parses the header field, according to the header field,
Redundant data block is reduced into the data block, the packet before compression is obtained.
Seen from the above description, the packet after compression can be reduced to by header field by the data before compression
Bag, data are not easy to lose, and transmission reliability is high.
Further, the space-consuming and compression ratio according to packet header determine the packet header and the packet header
The byte that quantity takes.
Further, the packet header quantity takes a byte；The packet header takes three bytes, its
Described in offset, redundancy word joint number and redundance character respectively take a byte.
Seen from the above description, consider the space-consuming and compression ratio in packet header, by space-consuming compared with
Few header field replaces the redundant data block that space-consuming is more, and the occupancy that can greatly reduce packet is empty
Between, transmission speed is improved, while can ensure that redundant data block can be reduced completely in resolving, makes number
According to not easy to lose.
The invention also provides a kind of data compression system, including
First acquisition module, for ergodic data bag, obtains offset, the redundancy word of each redundant data block
Joint number and redundance character；
First generation module, for by the offset of each redundant data block, redundancy word joint number and redundance character
The corresponding packet header of packing generation；
Second generation module, for the number generation packet header quantity according to the packet header；
Second acquisition module, includes the header field of the packet header quantity and packet header for obtaining；
Module is inserted, for inserting the header field before packet；
Removing module, for deleting the redundant data block in packet.
Further, in addition to
Sending module, obtains the packet after compression, and be sent to receiving terminal for transmitting terminal；The compression
Packet afterwards includes the header field and the packet deletes the data block obtained after redundant data block.
Further, in addition to
Receiving module, the packet after the compression is received for receiving terminal；
Recovery module is parsed, for parsing the header field, according to the header field, redundant digit is reduced
According to block into the data block, the packet before compression is obtained.
Further, the space-consuming and compression ratio according to packet header determine the packet header and the packet header
The byte that quantity takes.
Further, the packet header quantity takes a byte；The packet header takes three bytes, its
Described in offset, redundancy word joint number and redundance character respectively take a byte.
Embodiment one
Fig. 1-4 are refer to, embodiments of the invention one are：A kind of data compression method, can operate with vehicle-mounted end
Data interaction between end and monitoring server, is comprised the following steps that：
S1：Whole packet is traveled through, obtains and records the offset I of each redundant data block, redundancy word successively
Joint number N and redundance character C；As shown in figure 3, the offset I is the first character section of redundant data block
Relative position in the packet, the redundancy word joint number N continuously occurs for redundance character in redundant data block
Number, the redundance character C be redundant data block in uniquely exist continuously there are multiple characters；Institute
Redundance character hexadecimal representation is stated, scope is 0x00-0xFF, the redundance character C=0x00 shown in Fig. 3.
S2：The packing generation of the offset of each redundant data block, redundancy word joint number and redundance character is corresponding
Packet header；Number generation packet header quantity according to the packet header；Acquisition include packet header quantity with
The header field in packet header；Occupancy of the byte that the packet header and the packet header quantity take according to packet header
Space and compression ratio determine that alternatively, the packet header quantity takes a byte；The packet header is accounted for
With three bytes, wherein the offset, redundancy word joint number and redundance character respectively take a byte；Packet header
The encapsulation schematic diagram of field is as shown in figure 4, the A in figure represents packet header, and M represents the quantity in packet header.
S3：The header field is inserted before packet.
S4：Delete the redundant data block in packet.
S5：Transmitting terminal obtains the packet after compression, and is sent to receiving terminal；Packet after the compression
The data block obtained after redundant data block is deleted including the header field and the packet.
S6：Receiving terminal receives the packet after the compression, parses the header field, during parsing,
Packet header quantity, which is specified, needs the redundant data number of blocks of reduction in packet, and what each packet header item was specified
Offset, byte number and the character of redundant data block, according to the header field, reduce redundant data item by item
Block is into the data block, you can obtain the packet before compression.
Alternatively, the step S3 and S4 can be in no particular order, that is to say, that can first carry out S4 and perform again
S3。
Embodiment two
Refer to Fig. 5-6, a kind of data compression system, including the first acquisition module 1, the first generation module 2,
Second generation module 3, the second acquisition module 4, insertion module 5 and removing module 6.
First acquisition module 1 is used for ergodic data bag, obtains the offset, superfluous of each redundant data block
Remaining byte number and redundance character；
First generation module 2 is used for the offset of each redundant data block, redundancy word joint number and redundancy
The corresponding packet header of character packing generation；
Second generation module 3 is used for the number generation packet header quantity according to the packet header；
Second acquisition module 4, which is used to obtain, includes the header field of the packet header quantity and packet header；
The insertion module 5 is used to insert the header field before packet；
The removing module 6 is used to delete the redundant data block in packet.
The data compression system also includes sending module 7, receiving module 8 and parsing recovery module 9.
The sending module 7 is used for transmitting terminal and obtains the packet after compression, and is sent to receiving terminal；It is described
Packet after compression includes the header field and the packet deletes the data obtained after redundant data block
Block.
The receiving module 8 is used for receiving terminal and receives the packet after the compression；
The parsing recovery module 9 is used to parse the header field, according to the header field, reduces superfluous
Remaining data block obtains the packet before compression into the data block.
In summary, the present invention is provided a kind of data compression method and its system, by increasing header field
To indicate the attribute of redundant data block, redundant data block is deleted in the packet, can reduce the occupancy of packet
Space, can reduce network load and the data traffic consumed in transmission, reduce communication cost, improve and pass
Defeated stability and transmission speed, the probability that reduction packet malfunctions in transmitting procedure；And redundant data block
Length is longer, and the ratio of compression is bigger；Meanwhile, receiving terminal can be reduced to compression according to header field parsing
Preceding initial data, data are not easy to lose, and transmission reliability is high.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, every profit
The equivalents made with description of the invention and accompanying drawing content, or directly or indirectly it is used in the technology of correlation
Field, is included within the scope of the present invention.
Claims (10)
1. a kind of data compression method, it is characterised in that：Including：
Ergodic data bag, obtains the offset, redundancy word joint number and redundance character of each redundant data block；
The packing of the offset of each redundant data block, redundancy word joint number and redundance character is generated into corresponding packet header
；Number generation packet header quantity according to the packet header；Acquisition includes the packet header quantity and packet header
The header field of item；
The header field is inserted before packet；
Delete the redundant data block in packet.
2. data compression method according to claim 1, it is characterised in that：It is described " before packet
Insert the header field；Delete the redundant data block in packet " also include afterwards：
Transmitting terminal obtains the packet after compression, and is sent to receiving terminal；Packet after the compression includes
The header field and the packet delete the data block obtained after redundant data block.
3. data compression method according to claim 2, it is characterised in that：It is described that " transmitting terminal is obtained
Packet after compression, and it is sent to receiving terminal " also include afterwards：
Receiving terminal receives the packet after the compression, parses the header field, according to the header field,
Redundant data block is reduced into the data block, the packet before compression is obtained.
4. data compression method according to claim 1, it is characterised in that：Occupancy according to packet header is empty
Between and compression ratio determine byte that packet header and the packet header quantity take.
5. data compression method according to claim 1, it is characterised in that：The packet header quantity is accounted for
With a byte；The packet header takes three bytes, wherein the offset, redundancy word joint number and redundancy
Character respectively takes a byte.
6. a kind of data compression system, it is characterised in that：Including
First acquisition module, for ergodic data bag, obtains offset, the redundancy word of each redundant data block
Joint number and redundance character；
First generation module, for by the offset of each redundant data block, redundancy word joint number and redundance character
The corresponding packet header of packing generation；
Second generation module, for the number generation packet header quantity according to the packet header；
Second acquisition module, includes the header field of the packet header quantity and packet header for obtaining；
Module is inserted, for inserting the header field before packet；
Removing module, for deleting the redundant data block in packet.
7. data compression system according to claim 6, it is characterised in that：Also include
Sending module, obtains the packet after compression, and be sent to receiving terminal for transmitting terminal；The compression
Packet afterwards includes the header field and the packet deletes the data block obtained after redundant data block.
8. data compression system according to claim 6, it is characterised in that：Also include
Receiving module, the packet after the compression is received for receiving terminal；
Recovery module is parsed, for parsing the header field, according to the header field, redundant digit is reduced
According to block into the data block, the packet before compression is obtained.
9. data compression system according to claim 6, it is characterised in that：Occupancy according to packet header is empty
Between and compression ratio determine byte that packet header and the packet header quantity take.
10. data compression system according to claim 6, it is characterised in that：The packet header quantity
Take a byte；Packet header takes three bytes, wherein the offset, redundancy word joint number and superfluous
Remaining character respectively takes a byte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610027489.0A CN106982165A (en) | 2016-01-15 | 2016-01-15 | Data compression method and its system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610027489.0A CN106982165A (en) | 2016-01-15 | 2016-01-15 | Data compression method and its system |
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Family
ID=59341177
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109104732A (en) * | 2018-06-13 | 2018-12-28 | 珠海格力电器股份有限公司 | Data sending method and device and intelligent electric appliance |
| CN112769883A (en) * | 2019-11-01 | 2021-05-07 | 科美诊断技术股份有限公司 | Consumable data uploading method and device |
| CN112786180A (en) * | 2019-11-01 | 2021-05-11 | 科美诊断技术股份有限公司 | Consumable data uploading method and device |
| CN115361454A (en) * | 2022-10-24 | 2022-11-18 | 北京智芯微电子科技有限公司 | Message sequence coding, decoding and transmitting method and coding and decoding equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109104732A (en) * | 2018-06-13 | 2018-12-28 | 珠海格力电器股份有限公司 | Data sending method and device and intelligent electric appliance |
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Application publication date: 20170725 |