CN104219028B - A kind of method and apparatus for improving TCP performance - Google Patents
A kind of method and apparatus for improving TCP performance Download PDFInfo
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- CN104219028B CN104219028B CN201310210051.2A CN201310210051A CN104219028B CN 104219028 B CN104219028 B CN 104219028B CN 201310210051 A CN201310210051 A CN 201310210051A CN 104219028 B CN104219028 B CN 104219028B
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Abstract
The embodiment of the present invention provides a kind of method and apparatus for improving TCP performance, after the decoding REA receives the label for replacing duplicate data, the first TCP ACK of data generation can be directed to by decoding REA TCP protocol stack, but not the first TCP ACK are sent immediately, and are to wait for the decoded result of the DRE decoders.If correct coding, the DRE ACK and the first TCP ACK are sent collectively to the coding REA；If can not be correctly decoded, the DRE NACK and the first TCP ACK are sent collectively to the coding REA.The TCP ACK on network can be reduced by this method, can substantially mitigate the burden of TCP protocol stack, improve the performance of TCP protocol stack.
Description
Technical field
The present invention relates to the communications field, more particularly to a kind of method and apparatus for improving TCP performance.
Background technology
The general principle that data redundancy eliminates (Data Redundancy Elimination, DRE) is found from flow
The data pattern repeated, replaces duplicate data with label, duplicate data is recovered again in receiving terminal.Due to the length of label
Degree can thus save flow much smaller than the length of duplicate data.
It is common in the prior art, DRE be used for wide area network in, data center (Data Center, DC) and branch
(Branch, BR) passes through wide area network（Wide Area Network, WAN）Connection, redundancy abatement apparatus (Redundancy
Eliminate Appliance, REA) between DC/BR and WAN.Encoded from the data that DC is sent in REA, weight is replaced with label
Complex data, transmit by WAN, decoded in nearly BR REA, rebuild data, finally issue BR.
In order to ensure can correctly decode, introducing affirmation mechanism is generally required.In existing affirmation mechanism, DRE codings
Device produces message by after data compression（Message, Msg）, general each manufacturer each sets the privately owned form of the message, only
The decoder of each manufacturer can just be correctly decoded the message.Encode REA transmission control protocol（Transmission Control
Protocol, TCP）Protocol stack sends the Msg.
After the TCP protocol stack of DRE decoders receives above-mentioned Msg, TCP acknowledgment can be replied（Acknowledge, ACK）Give
The TCP protocol stack of DRE encoders.Also, decoding REA TCP protocol stack can give Msg DRE decoders.
As DRE decoders can be correctly decoded, then the TCP protocol stack that DRE ACK, DRE encoders are returned to DRE encoders is received
To after DRE ACK, TCP ACK can be sent to confirm the DRE ACK.As DRE decoders can not be correctly decoded, encoded to DRE
Device, which returns to DRE, to be denied（Negative Acknowledge, NACK）.After the TCP protocol stack of DRE encoders receives DRE NACK,
Also TCP ACK can be sent to confirm the DRE NACK.
In the conventional method, either DRE encoders or DRE decoders, receive DRE Msg, DRE ACK or
After DRE NACK, TCP protocol stack can all produce TCP ACK and be sent to opposite end, can so leverage the property of TCP protocol stack
Energy.
The content of the invention
The embodiments of the invention provide a kind of method and apparatus for improving TCP performance, it is intended to which how solution subtracts
The problem of few TCP ACK.
In a first aspect, a kind of method for improving TCP performance, methods described include：
Decode redundancy abatement apparatus REA and receive the label information that coding REA is sent；
The transmission control protocol TCP protocol stack for decoding REA generates the first TCP acknowledgment ACK for the label information；
Decoding REA data redundancy eliminates DRE decoders and the label information is decoded；
When the DRE decoders for decoding REA are correctly decoded the label information, DRE ACK are generated；Decode REA TCP associations
The first TCP ACK and the DRE ACK are sent to the coding REA by view stack；
When the DRE decoders for decoding REA can not be correctly decoded the label information, generation DRE denies NACK；Decoding
The first TCP ACK and the DRE NACK are sent to the coding REA by REA TCP protocol stack.
With reference in a first aspect, in the first possible implementation of first aspect, coding REA is received in decoding REA
Before the label information of transmission, in addition to：
Coding REA DRE encoders find the data of repetition from flow to be sent, are replaced with the label information
The data of the repetition, the label information is stored in the transmission window of the DRE encoders；
The label information that sends window obtain storage of the TCP protocol stack of the coding REA from the DRE encoders；
The label information is sent to coding REA by the TCP protocol stack of the coding REA.
With reference to the possible implementation of the first of first aspect or first aspect, second in first aspect may
Implementation in, decoding REA TCP protocol stack the first TCP ACK and the DRE ACK are sent to the coding
After REA, in addition to：
The TCP protocol stack of the coding REA generates the 2nd TCP for the first TCP ACK and DRE ACK
ACK；
A timer is preset, before the timer expiry, when the coding REA needs to send other data to institute
Decoding REA is stated, then the 2nd TCP ACK and other described data are sent to the decoding REA by the coding REA.
Second aspect, a kind of method for improving TCP performance, methods described include：
Coding redundancy abatement apparatus REA data redundancy eliminates DRE encoders and finds repetition from flow to be sent
Data, instead of the data of the repetition, the label letter is stored in the transmission window of the DRE encoders with label information
Breath；
The transmission control protocol TCP protocol stack of the coding REA obtains storage from the window that sends of the DRE encoders
Label information；
The label information is sent to decoding REA by the TCP protocol stack of the coding REA.
The third aspect, one kind decode REA, and the decoding REA includes：
Transmission control protocol TCP protocol stack, the label information sent for receiving coding REA, and believe for the label
The first TCP acknowledgment ACK of breath generation；
Data redundancy eliminates DRE decoders, for being decoded to the label information；Believe when being correctly decoded the label
During breath, DRE ACK are generated；When that can not be correctly decoded the label information, generation DRE denies NACK；
The TCP protocol stack, it is additionally operable to the first TCP ACK and the DRE ACK being sent to the coding REA；
Or for the first TCP ACK and the DRE NACK to be sent into the coding REA.
Fourth aspect, one kind coding REA, including：
Data redundancy eliminates DRE encoders, for the stored tag information in window is sent, wherein, the label information
For the data for the repetition for replacing finding from flow to be sent；
Transmission control protocol TCP protocol stack, for obtaining the label information of storage from the DRE encoders, by the mark
Label information is sent to decoding REA.
With reference to fourth aspect, in the first possible implementation of fourth aspect, in addition to：
The TCP protocol stack is additionally operable to the first TCP acknowledgment ACK and DRE ACK generations second sent for decoding REA
TCP ACK；Wherein, the first TCP ACK are that decoding REA generates for the label information, and DRE ACK are that decoding REA is correct
Decode what is generated during the label information.
With reference to the first possibility of fourth aspect, the coding REA can also include a default timer, in institute
Before stating timer expiry, when the coding REA needs to send other data to the decoding REA, then the TCP protocol stack is also
For the 2nd TCP ACK and other described data to be sent into the decoding REA.
5th aspect, a kind of system for improving TCP performance, including：
Decode redundancy abatement apparatus REA and coding REA；
The decoding REA includes data redundancy and eliminates DRE decoders and decode REA transmission control protocol TCP protocol stack；
The coding REA includes DRE encoders and encodes REA TCP protocol stack；
The decoding REA, the label information for receiving coding REA for decoding REA and sending；Decode REA TCP protocol stack pin
First TCP acknowledgment ACK is generated to the label information；Decoding REA DRE decoders decode to the label information；When
When decoding REA DRE decoders are correctly decoded the label information, DRE ACK are generated；REA TCP protocol stack is decoded by described in
First TCP ACK and the DRE ACK are sent to the coding REA；When decoding REA DRE decoders can not be correctly decoded institute
When stating label information, generation DRE denies NACK；REA TCP protocol stack is decoded by the first TCP ACK and DRE
NACK is sent to the coding REA；
The coding REA, the DRE encoders for encoding REA find the data of repetition from flow to be sent, with mark
Information is signed to replace the data of the repetition, the label information is stored in the transmission window of the DRE encoders；The coding
The label information that sends window obtain storage of the REA TCP protocol stack from the DRE encoders；The TCP associations of the coding REA
The label information is sent to decoding REA by view stack.
Compared with prior art, in the embodiment of the present invention, when the decoding REA receives the mark for replacing duplicate data
After label, the data the first TCP ACK of generation can be directed to by decoding REA TCP protocol stack, but not immediately by the first TCP
ACK is sent, and is to wait for the decoded result of the DRE decoders.If correct coding, by the DRE ACK and institute
State the first TCP ACK and be sent collectively to the coding REA；If can not be correctly decoded, by the DRE NACK and described
One TCP ACK are sent collectively to the coding REA.The TCP ACK on network can be reduced by this method, can substantially be mitigated
The burden of TCP protocol stack, improve the performance of TCP protocol stack.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 a are a kind of method flow diagrams for improving TCP performance provided in an embodiment of the present invention；
Fig. 1 b are a kind of method flow diagrams for improving TCP performance provided in an embodiment of the present invention；
Fig. 2 is a kind of method schematic diagram for improving TCP performance provided in an embodiment of the present invention；
Fig. 3 is a kind of method schematic diagram for improving TCP performance provided in an embodiment of the present invention；
Fig. 4 a are a kind of decoding REA provided in an embodiment of the present invention structure charts；
Fig. 4 b are a kind of coding REA provided in an embodiment of the present invention structure charts；
Fig. 5 is a kind of system construction drawing for improving TCP performance provided in an embodiment of the present invention；
Fig. 6 is a kind of decoding REA provided in an embodiment of the present invention structure chart；
Fig. 7 is a kind of coding REA provided in an embodiment of the present invention structure chart.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
With reference to figure 1a, Fig. 1 a are a kind of method flows for improving TCP performance provided in an embodiment of the present invention
Figure, methods described include：
101, decoding redundancy abatement apparatus REA receives the label information that coding REA is sent；
Optionally, in an embodiment of the present invention, coding REA refers to the REA equipment of coding side；Decoding REA refers to decode
The REA equipment at end.Coding REA can include DRE encoders and TCP protocol stack, and decoding REA can include DRE decoders and TCP
Protocol stack.
102, the transmission control protocol TCP protocol stack for decoding REA generates the first TCP acknowledgment ACK for the label information；
103, the data redundancy elimination DRE decoders for decoding REA decode to the label information；When decoding REA's
When DRE decoders are correctly decoded the label information, DRE ACK are generated, go to 104；When decoding REA DRE decoders can not
When being correctly decoded the label information, generation DRE denies NACK, goes to 105；
104, above-mentioned first TCP ACK and the DRE ACK are sent to the coding by the TCP protocol stack for decoding REA
REA。
105, above-mentioned first TCP ACK and the DRE NACK are sent to the coding by the TCP protocol stack for decoding REA
REA。
In an embodiment of the present invention, after the decoding REA receives the label for replacing duplicate data, decoding
REA TCP protocol stack can be directed to the data and produce the first TCP ACK, but not immediately send out the first TCP ACK
Go, and be to wait for the decoded result of the DRE decoders.If correct coding, by the DRE ACK and the first TCP
ACK is sent collectively to the coding REA；If can not be correctly decoded, by the DRE NACK and the first TCP ACK mono-
Rise and be sent to the coding REA.The TCP ACK on network can be reduced by this method, can substantially mitigate the negative of TCP protocol stack
Load, improve the performance of Transmission Control Protocol.
With reference to figure 1b, Fig. 1 b are the method flows of another raising TCP performance provided in an embodiment of the present invention
Figure, methods described include：
106, coding redundancy abatement apparatus REA data redundancy eliminate DRE encoders and weight are found from flow to be sent
Multiple data, instead of the data of the repetition, the label is stored in the transmission window of the DRE encoders with label information
Information；
107, the coding REA transmission control protocol TCP protocol stack are obtained from the transmission window of the DRE encoders and deposited
The label information of storage；
The label information is sent to decoding REA by 108, the coding REA TCP protocol stack.
In an embodiment of the present invention, due to by DRE encoders send window and encode REA TCP protocol stack hair
Window is sent to merge, therefore, coding REA can save the storage resource of half, improve the performance of Transmission Control Protocol.
With reference to figure 2, Fig. 2 is a kind of method schematic diagram for improving TCP performance provided in an embodiment of the present invention,
Methods described includes：
201, the DRE encoders for encoding REA find the data of repetition from flow, with label come instead of the number of the repetition
According in the transmission window storage label information of the DRE encoders；
The label letter that sends window obtain storage of 202, the coding REA TCP protocol stack from the DRE encoders
Breath；
The label information is sent to decoding REA ends TCP protocol stack by 203, the coding REA TCP protocol stack；
204th, the TCP protocol stack for decoding REA generates the first TCP ACK, and the mark that will be received for the label information
Label information issues decoding REA DRE decoders；
205, the DRE decoders for decoding REA decode to the label information；When the DRE decoders can be solved correctly
During the code label, DRE ACK are generated, and the DRE ACK are sent to the TCP protocol stack of the decoding REA；
The DRE ACK and the first TCP ACK are sent to coding REA by 206, the decoding REA TCP protocol stack
TCP protocol stack；
207, the coding REA TCP protocol stack generate the 2nd TCP for the first TCP ACK and DRE ACK
ACK；The DRE ACK are sent to the DRE encoders of the coding REA by the TCP protocol stack of the coding REA；
208, a timer is preset, before the timer expiry, if the coding REA needs to send other numbers
According to the decoding REA, then the 2nd TCP ACK and other described data are sent to the solution by the coding REA in the lump
Code REA TCP protocol stack.
The embodiment of the present invention provides a kind of method for improving TCP performance, and methods described will be by that will decode REA
TCP protocol stack for label information generation TCP ACK and DRE decoders successfully decoded generation DRE ACK send together
To coding REA, the TCPACK on network can be reduced by this method, can substantially mitigate the burden of TCP protocol stack, improve decoding
The performance of REA Transmission Control Protocol；Also, due to by DRE encoders send window and encode REA TCP protocol stack transmission window
Mouth merges, and therefore, coding REA can save the storage resource of half, improve the performance of coding REA Transmission Control Protocol.
With reference to figure 3, Fig. 3 is a kind of method schematic diagram for improving TCP performance provided in an embodiment of the present invention,
Methods described includes：
301, the DRE encoders for encoding REA find the data of repetition from flow, with label come instead of the number of the repetition
According in the transmission window storage label information of the DRE encoders；
The label letter that sends window obtain storage of 302, the coding REA TCP protocol stack from the DRE encoders
Breath；
The label information is sent to decoding REA TCP protocol stack by 303, the coding REA TCP protocol stack；
304, the TCP protocol stack for decoding REA generates the first TCP ACK, and the mark that will be received for the label information
Label information issues decoding REA DRE decoders；
305, the DRE decoders for decoding REA decode to the label information；When the DRE encoders can not be correct
When decoding the label, the DRE NACK are sent to decoding REA by generation DRE NACK, the decoding REA DRE decoders
TCP protocol stack；
306, the DRE NACK and the first TCP ACK are sent to coding by the TCP protocol stack of the decoding REA
REA；
307, the DRE NACK are sent to the DRE encoders by the TCP protocol stack of the coding REA；
308, the DRE encoders are according to the DRE NACK, it is determined that needing the label sent again to the decoding REA
Information；
309, the coding REA TCP protocol stack generate the 3rd TCP for the first TCP ACK and DRENACK
ACK；The TCP protocol stack of the coding REA sends the label information and the 3rd TCP ACK to the decoding REA determined in 308
TCP protocol stack；
310, the decoding REA TCP protocol stack are directed to the 3rd generated in the label information and 309 determined in 308
TCP ACKD generate the 4th TCP ACK, and the label information received is issued to decoding REA DRE decoders；
311, the DRE encoders decode to the label information determined in 308, when the DRE encoders correctly solve
During the code label, DRE ACK are generated；
The DRE ACK and the 4th TCP ACK are sent to coding REA's by 312, the decoding REA TCP protocol stack
TCP protocol stack；
313, DRE ACK are sent to the DRE encoders by the TCP protocol stack of the coding REA.
The embodiment of the present invention provides a kind of method for improving TCP performance, and methods described will be by that will decode REA
TCP protocol stack for label information generation TCP ACK and DRE decoders successfully decoded generation DRE NACK send together
To coding REA, the TCPACK on network can be reduced by this method, can substantially mitigate the burden of TCP protocol stack, improve decoding
The performance of REA Transmission Control Protocol；Also, due to by DRE encoders send window and encode REA TCP protocol stack transmission window
Mouth merges, and therefore, coding REA can save the storage resource of half, improve the performance of coding REA Transmission Control Protocol.
With reference to figure 4a, Fig. 4 a are a kind of decoding REA provided in an embodiment of the present invention structure charts, and the decoding REA includes：
TCP protocol stack 401, the label information sent for receiving coding REA, and for label information generation first
TCP ACK；
DRE decoders 403, for being decoded to the label information；When being correctly decoded the label information, generation
DRE ACK；When the label information can not be correctly decoded, DRE NACK are generated；
The TCP protocol stack 401, it is additionally operable to the first TCP ACK and the DRE ACK being sent to the coding
REA；Or for the first TCP ACK and the DRE NACK to be sent into the coding REA.
In an embodiment of the present invention, after decoding REA receives the label for replacing duplicate data, REA TCP is decoded
Protocol stack can be directed to the data and produce the first TCP ACK, but not immediately send the first TCP ACK, but
Wait the decoded result of the DRE decoders.If correct coding, by the DRE ACK and the first TCP ACK together
It is sent to the coding REA；If can not be correctly decoded, the DRE NACK and the first TCP ACK are sent together
To the coding REA, the TCP ACK on network can be so reduced, can substantially mitigate the burden of TCP protocol stack, improve Transmission Control Protocol
Performance.
With reference to figure 4b, Fig. 4 b are a kind of coding REA provided in an embodiment of the present invention structure charts, and the coding REA includes：
DRE encoders 406, for the stored tag information in window is sent, wherein, the label information be used for replace from
The data for the repetition found in flow to be sent；
TCP protocol stack 407, for obtaining the label information of storage from the DRE encoders 406, by the label information
It is sent to decoding REA.
In an embodiment of the present invention, due to by DRE encoders send window and encode REA TCP protocol stack hair
Window is sent to merge, therefore, coding REA can save the storage resource of half, improve the performance of Transmission Control Protocol.
Optionally, the TCP protocol stack 407 is additionally operable to the first TCP ACK and DRE ACK lifes sent for decoding REA
Into the 2nd TCP ACK；Wherein, the first TCP ACK are that decoding REA generates for the label information, and DRE ACK are decodings
REA is correctly decoded what is generated during the label information；
Optionally, the coding REA can also include a default timer, before the timer expiry, when
The coding REA needs to send other data to the decoding REA, then the TCP protocol stack 407 is additionally operable to described second
TCP ACK and other described data are sent to the decoding REA.
In the embodiment of the present invention, coding REA by DRE encoders due to sending window and coding REA TCP protocol stack
Send window to merge, therefore, coding REA can save the storage resource of half.
With reference to figure 5, Fig. 5 is a kind of system construction drawing for improving TCP performance provided in an embodiment of the present invention.
As shown in figure 5, the system includes：
Decode redundancy abatement apparatus REA and coding REA；The decoding REA includes data redundancy and eliminates the reconciliation of DRE decoders
Code REA transmission control protocol TCP protocol stack；The coding REA includes DRE encoders and encodes REA TCP protocol stack；Its
In,
The decoding REA, the label information for receiving coding REA for decoding REA and sending；Decode REA TCP protocol stack pin
First TCP acknowledgment ACK is generated to the label information；Decoding REA DRE decoders decode to the label information；When
When decoding REA DRE decoders are correctly decoded the label information, DRE ACK are generated；REA TCP protocol stack is decoded by described in
First TCP ACK and the DRE ACK are sent to the coding REA；When decoding REA DRE decoders can not be correctly decoded institute
When stating label information, generation DRE denies NACK；REA TCP protocol stack is decoded by the first TCP ACK and DRE
NACK is sent to the coding REA；
The coding REA, the DRE encoders for encoding REA find the data of repetition from flow to be sent, with mark
Information is signed to replace the data of the repetition, the label information is stored in the transmission window of the DRE encoders；The coding
The label information that sends window obtain storage of the REA TCP protocol stack from the DRE encoders；The TCP associations of the coding REA
The label information is sent to decoding REA by view stack.
In an embodiment of the present invention, after decoding REA receives the label for replacing duplicate data, the number can be directed to
According to the first TCP ACK of generation, but not the first TCP ACK are sent immediately, and be to wait for the DRE decoders
Decoded result.If correct coding, the DRE ACK and the first TCP ACK are sent collectively to the coding REA；
If can not be correctly decoded, the DRE NACK and the first TCP ACK are sent collectively to the coding REA, so
The TCP ACK on network can be reduced, can substantially mitigate the burden of TCP protocol stack.
In the embodiment of the present invention, coding REA by DRE encoders due to sending window and coding REA TCP protocol stack
Send window to merge, therefore, coding REA can save the storage resource of half.
With reference to figure 6, Fig. 6 is a kind of decoding REA provided in an embodiment of the present invention structure chart, and the decoding REA includes：
Processor (processor) 601, communication interface (Communications Interface) 602, memory
(memory) 603, bus 604.
Processor 601, communication interface 602, memory 603 complete mutual communication by bus 604.
Communication interface 602, for being communicated with coding REA；
Processor 601, for configuration processor.
Specifically, program can include program code, and described program code includes computer-managed instruction.
Processor 601 is probably a central processor CPU, or specific integrated circuit（Application
Specific Integrated Circuit, ASIC）, or it is arranged to implement the one or more of the embodiment of the present invention
Integrated circuit.
Memory 603, for depositing program.Memory 603 may include high-speed RAM memory, it is also possible to also including non-
Volatile memory（non-volatile memory）.Program can specifically include：
Receive the label information that coding REA is sent；
The first TCP ACK are generated for the label information；
The label information is decoded, when being correctly decoded the label information, generates DRE ACK；When can not be just
When really decoding the label information, DRE NACK are generated；
The first TCP ACK and the DRE ACK are sent to the coding REA；Or for by described first
The TCP ACK and DRE deny that NACK is sent to the coding REA.
With reference to figure 7, Fig. 7 is a kind of coding REA provided in an embodiment of the present invention structure chart, and the coding REA includes：
Processor (processor) 701, communication interface (Communications Interface) 702, memory
(memory) 703, bus 704.
Processor 701, communication interface 702, memory 703 complete mutual communication by bus 704.
Communication interface 702, for being communicated with decoding REA；
Processor 701, for configuration processor.
Specifically, program can include program code, and described program code includes computer-managed instruction.
Processor 701 is probably a central processor CPU, or specific integrated circuit（Application
Specific Integrated Circuit, ASIC）, or it is arranged to implement the one or more of the embodiment of the present invention
Integrated circuit.
Memory 703, for depositing program.Memory 703 may include high-speed RAM memory, it is also possible to also including non-
Volatile memory（non-volatile memory）.Program can specifically include：
Stored tag information, wherein, the label information is used for the number for the repetition that replacement is found from flow to be sent
According to；
The label information of storage is obtained from the memory cell；
The label information is sent to decoding REA.
One of ordinary skill in the art will appreciate that realize all or part of flow in above-described embodiment method, being can be with
The hardware of correlation is instructed to complete by computer program, described program can be stored in a computer read/write memory medium
In, the program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic
Dish, CD, read-only memory（Read-Only Memory, ROM）Or random access memory（Random Access
Memory, abbreviation RAM）Deng.
Above disclosure is only preferred embodiment of present invention, can not limit the right model of the present invention with this certainly
Enclose, therefore the equivalent variations made according to the claims in the present invention, still belong to the scope that the present invention is covered.
Claims (9)
- A kind of 1. method for improving TCP performance, it is characterised in that methods described includes：Decode redundancy abatement apparatus REA and receive the label information that coding REA is sent；The transmission control protocol TCP protocol stack for decoding REA generates the first TCP acknowledgment ACK for the label information；Decoding REA data redundancy eliminates DRE decoders and the label information is decoded；When the DRE decoders for decoding REA are correctly decoded the label information, DRE ACK are generated；Decode REA TCP protocol stack The first TCP ACK and the DRE ACK are sent collectively to the coding REA；When the DRE decoders for decoding REA can not be correctly decoded the label information, generation DRE denies NACK；Decode REA's The first TCP ACK and the DRE NACK are sent collectively to the coding REA by TCP protocol stack.
- 2. according to the method for claim 1, it is characterised in that decoding REA receive coding REA send label information it Before, in addition to：Coding REA DRE encoders find the data of repetition from flow to be sent, with the label information come instead of described The data repeated, the label information is stored in the transmission window of the DRE encoders；The label information that sends window obtain storage of the TCP protocol stack of the coding REA from the DRE encoders；The label information is sent to coding REA by the TCP protocol stack of the coding REA.
- 3. method according to claim 1 or 2, it is characterised in that decoding REA TCP protocol stack by the first TCP The ACK and DRE ACK is sent to after the coding REA, in addition to：The TCP protocol stack of the coding REA generates the 2nd TCP ACK for the first TCP ACK and DRE ACK；A timer is preset, before the timer expiry, when the coding REA needs to send other data to the solution Code REA, then the coding REA the 2nd TCP ACK and other described data are sent to the decoding REA.
- A kind of 4. method for improving TCP performance, it is characterised in that methods described includes：Coding redundancy abatement apparatus REA data redundancy eliminates the data that DRE encoders find repetition from flow to be sent, , instead of the data of the repetition, the label information is stored in the transmission window of the DRE encoders with label information；The label that sends window obtain storage of the transmission control protocol TCP protocol stack of the coding REA from the DRE encoders Information；The label information is sent to decoding REA by the TCP protocol stack of the coding REA.
- 5. one kind decoding redundancy abatement apparatus REA, it is characterised in that including：Transmission control protocol TCP protocol stack, the label information sent for receiving coding REA, and given birth to for the label information Into the first TCP acknowledgment ACK；Data redundancy eliminates DRE decoders, for being decoded to the label information；When being correctly decoded the label information When, generate DRE ACK；When that can not be correctly decoded the label information, generation DRE denies NACK；The TCP protocol stack, it is additionally operable to the first TCP ACK and the DRE ACK being sent collectively to the coding REA； Or for the first TCP ACK and the DRE NACK to be sent collectively into the coding REA.
- A kind of 6. coding redundancy abatement apparatus REA, it is characterised in that including：Data redundancy eliminates DRE encoders, for the stored tag information in window is sent, wherein, the label information is used for Instead of the data for the repetition found from flow to be sent；Transmission control protocol TCP protocol stack, for obtaining the label information of storage from the DRE encoders, the label is believed Breath is sent to decoding REA.
- 7. coding REA according to claim 6, it is characterised in that the TCP protocol stack is additionally operable to for decoding REA hairs The first TCP acknowledgment ACK and the DRE ACK sent generates the 2nd TCP ACK；Wherein, the first TCP ACK are decoding REA for described Label information generation, DRE ACK decodings REA is generated when being correctly decoded the label information.
- 8. coding REA according to claim 7, it is characterised in that a default timer can also be included, described Before timer expiry, when the coding REA needs to send other data to the decoding REA, then the TCP protocol stack is also used In the 2nd TCP ACK and other described data are sent into the decoding REA.
- A kind of 9. system for improving TCP performance, it is characterised in that including：Decode redundancy abatement apparatus REA and coding REA；The decoding REA includes data redundancy and eliminates DRE decoders and decoding REA transmission control protocol TCP protocol stack；The coding REA includes DRE encoders and encodes REA TCP protocol stack；Wherein,The decoding REA, the label information for receiving coding REA for decoding REA and sending；Decoding REA TCP protocol stack is directed to institute State label information and generate the first TCP acknowledgment ACK；Decoding REA DRE decoders decode to the label information；Work as decoding When REA DRE decoders are correctly decoded the label information, DRE ACK are generated；REA TCP protocol stack is decoded by described first TCP ACK and the DRE ACK are sent collectively to the coding REA；When decoding REA DRE decoders can not be correctly decoded institute When stating label information, generation DRE denies NACK；REA TCP protocol stack is decoded by the first TCP ACK and DRE NACK is sent collectively to the coding REA；The coding REA, the DRE encoders for encoding REA find the data of repetition from flow to be sent, believed with label Cease to replace the data of the repetition, the label information is stored in the transmission window of the DRE encoders；The coding REA TCP protocol stack from the DRE encoders send window obtain storage label information；The TCP protocol stack of the coding REA The label information is sent to decoding REA.
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