CN104506434B - A kind of fast path answer method and system - Google Patents
A kind of fast path answer method and system Download PDFInfo
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- CN104506434B CN104506434B CN201410838459.9A CN201410838459A CN104506434B CN 104506434 B CN104506434 B CN 104506434B CN 201410838459 A CN201410838459 A CN 201410838459A CN 104506434 B CN104506434 B CN 104506434B
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Abstract
The present invention provides a kind of fast path answer method and system, the above method and comprised the following steps：After receiving terminal receives the FSACK INIT messages of transmitting terminal transmission, FSACK ACK messages are sent from the receiving terminal total interface；After the transmitting terminal receives first FSACK ACK message, verify whether the unique identifier in FSACK ACK messages and the unique identifier in FSACK INIT messages are identical；If identical, the path i.e. destination path that the transmitting terminal receives FSACK ACK messages from first replys FSACK FINAL messages to the receiving terminal；After receiving terminal receives FSACK FINAL messages, selection confirmation message is sent from destination path, realizes the path for finding out minimal time delay rapidly from mulitpath, all SACK messages of receiving terminal are all sent from this paths afterwards, improve the overall handling capacity of system.
Description
Technical field
The invention belongs to Path selection field, more particularly to a kind of fast path answer method and system.
Background technology
Streaming control protocol (SCTP, Stream Control Transmission Protocol) is a kind of new biography
Defeated layer protocol, it is possible to substitute TCP in the future；SCTP is a kind of agreement for acting on multiple ports, but according to RFC newest rule
It is fixed, carry out data transmission under default situations using only a port, will undoubtedly influence the advantage that SCTP plays multiport communication,
Then there is the SCTP of multipath transfer.
The streaming media control of multipath transfer (CMT, Concurrent Multi-path Transmission)
Agreement processed is a kind of data transfer mode for being suitable for multiport, and there is also one for algorithm and strategy than before for this transmission means
Fixed inadaptability, show redundant retransmission, the renewal of overly conservative congestion window and a large amount of SACK messages etc..
Iyengar et al. proposes new algorithm and strategy in these problems, wherein division Fast retransmission algorithm (SFR,
Split Fast Retransmission) solve the problems, such as redundant retransmission；New congestion window more new algorithm (CUC, CWND
Update for CMT) solve the problems, such as overly conservative congestion window renewal；Delayed response algorithm (DAC, Delay ACK)
Solve the problems, such as a large amount of SACK messages.
SFR algorithms, CUC algorithms and DAC algorithms are both for the transmitting terminal of data transfer, but data transfer needs both sides
Common cooperation, due in default situations, confirm (SACK, Selective ACK) when data receiver needs to send selection
During message, a nearest path for receiving DATA data blocks is always selected, if the path delay of time of this paths is big or path
Congestion situation it is bad, then reception of the data sending terminal to this message certainly will be had influence on, so as to influence the biography of following data
It is input into and influences overall handling capacity.
According to current SCTP design, always transmitting terminal occupies the initiative position, and actively goes the time delay and bandwidth of detective path,
And determine which paths to carry out the data transfer (transmission again of some message before or) of next message from, work as receiving terminal
When needing to send SACK data, give tacit consent to using the path for receiving packet for the last time；Which paths receiving terminal due to not knowing about
It is optimal transmitting path, the transmission for causing SACK is blindness, if SACK is sent using the bigger path of time delay, it will
Have a strong impact on the overall performance of network.
The content of the invention
The present invention provides a kind of fast path answer method and system, to solve the above problems.
The present invention provides a kind of fast path answer method.The above method comprises the following steps：
After receiving terminal receives the FSACK-INIT messages of transmitting terminal transmission, FSACK- is sent from the receiving terminal total interface
ACK messages；
After the transmitting terminal receives first FSACK-ACK message, verify in the FSACK-ACK messages
Whether unique identifier and the unique identifier in the FSACK-INIT messages are identical；
If identical, the transmitting terminal received from first the path i.e. destination paths of the FSACK-ACK messages to
The receiving terminal replys FSACK-FINAL messages；
After the receiving terminal receives the FSACK-FINAL messages, selection confirmation message is sent from the destination path.
The present invention also provides a kind of fast path answering system, including transmitting terminal, receiving terminal；Wherein, the transmitting terminal with
The receiving terminal is connected；
Receiving terminal, for receive transmitting terminal transmission FSACK-INIT messages after, from total interface send FSACK-ACK report
Text；
The transmitting terminal, after receiving first FSACK-ACK message, verify the FSACK-ACK messages
In unique identifier and the unique identifier in the FSACK-INIT messages it is whether identical；
If identical, the path i.e. destination paths of the FSACK-ACK messages is received from first to the receiving terminal
Reply FSACK-FINAL messages；
The receiving terminal, after receiving the FSACK-FINAL messages, send selection from the destination path and confirm report
Text.
, can be from a plurality of according to a kind of fast path answer method provided by the invention and system compared to prior art
The path of minimal time delay is found out in path rapidly, all SACK messages of receiving terminal are all sent from this paths afterwards, are improved
The overall handling capacity of system.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 show FSACK-INIT message formats schematic diagram of the present invention；
Fig. 2 show FSACK-ACK message formats schematic diagram of the present invention；
Fig. 3 show FSACK-FINAL messages schematic diagram of the present invention.
Fig. 4 show communicating pair process chart of the present invention；
Fig. 5 show communicating pair information exchange schematic flow sheet of the present invention；
Fig. 6 show fast path answer method process chart of the present invention；
Fig. 7 show fast path answer method handling process schematic diagram of the present invention；
Fig. 8 show fast path answering system structure chart of the present invention.
Embodiment
Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that do not conflicting
In the case of, the feature in embodiment and embodiment in the application can be mutually combined.
Fig. 6 show the fast path answer method process chart of the embodiment of the present invention 6, comprises the following steps：
Step 601：Pre-defined three types message format, wherein, the three types message is reported for FSACK-INIT
Text, FSACK-ACK messages, FSACK-FINAL messages；
Obtain fast path probe messages be FSACK-INIT messages, fast path confirmation message i.e. FSACK-ACK messages,
Fast target path confirmation message is FSACK-FINAL messages.
As shown in Figure 1：FSACK-INIT message formats include type of message X i.e. Type=X, data block identifier position
Chunk Flags, message length Length, unique identifier Unique Identity；The content of data block is a unique mark
Know symbol, for indicating the process for once detecting the fastest path, in practice, timestamp can be used as this unique identifier.
As shown in Figure 2：FSACK-ACK message formats include type of message Y i.e. Type=Y, data block identifier position Chunk
Flags, message length Length, unique identifier Unique Identity；The content of data block is also a unique sign
Symbol, after receiving terminal receives FSACK-INIT messages, replicates its data block contents.
As shown in Figure 3：FSACK-FINAL message formats include type of message Z i.e. Type=Z, data block identifier position
Chunk Flags, message length Length, reserved field Reserved；Data block contents are as reserved field, in practice,
This field can be ignored.
Step 602：Transmitting terminal sends the FSACK-INIT messages to receiving terminal；
Transmitting terminal is from the main path transmission FSACK-INIT messages to receiving terminal, if multipath transfer pattern,
Any one paths are then selected to send the FSACK-INIT messages to receiving terminal.
The FSACK-INIT messages carry unique identifier Unique Identity (can use the time in practice
Stamp, as shown in Figure 4).
Step 603：After the receiving terminal receives the FSACK-INIT messages, from described in the transmission of receiving terminal total interface
FSACK-ACK messages；
Wherein, the FSACK-ACK messages carry unique identifier Unique Identity and (can used in practice
Timestamp, as shown in Figure 4).
Step 604：After the transmitting terminal receives first FSACK-ACK message, the FSACK-ACK is verified
The unique identifier Unique Identity and unique identifier Unique in the FSACK-INIT messages in message
Whether Identity is identical：
If identical, the path i.e. destination path for receiving the FSACK-ACK messages from described first is replied
FSACK-FINAL messages；
After the receiving terminal receives the FSACK-FINAL messages, sending selection confirmation message from the destination path is
SACK messages.
If differing, this message is directly abandoned.(as shown in Figure 5)
When timing reaches, transmitting terminal sends FSACK-INIT messages again, carries out new most fast reverse-path once
Detection.
Fig. 7 show the fast path answer method handling process schematic diagram of the embodiment of the present invention 7, comprises the following steps：
Step 701：After receiving terminal receives the FSACK-INIT messages of transmitting terminal transmission, sent out from the receiving terminal total interface
Send FSACK-ACK messages；
Step 702：After the transmitting terminal receives first FSACK-ACK message, the FSACK-ACK is verified
Whether the unique identifier in message and the unique identifier in the FSACK-INIT messages are identical；If identical, the hair
The path i.e. destination path that sending end receives the FSACK-ACK messages from first replys FSACK- to the receiving terminal
FINAL messages；
Step 703：After the receiving terminal receives the FSACK-FINAL messages, it is true to send selection from the destination path
Recognize message.
Fig. 8 show the fast path answering system structure chart of the embodiment of the present invention 8, including transmitting terminal, receiving terminal；Its
In, the transmitting terminal is connected with the receiving terminal；
Receiving terminal, for receive transmitting terminal transmission FSACK-INIT messages after, from total interface send FSACK-ACK report
Text；
The transmitting terminal, after receiving first FSACK-ACK message, verify the FSACK-ACK messages
In unique identifier and the unique identifier in the FSACK-INIT messages it is whether identical；
If identical, the path i.e. destination paths of the FSACK-ACK messages is received from first to the receiving terminal
Reply FSACK-FINAL messages；
The receiving terminal, after receiving the FSACK-FINAL messages, send selection from the destination path and confirm report
Text.
, can be from a plurality of according to a kind of fast path answer method provided by the invention and system compared to prior art
The path of minimal time delay is found out in path rapidly, all SACK messages of receiving terminal are all sent from this paths afterwards, are improved
The overall handling capacity of system.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of fast path answer method, it is characterised in that comprise the following steps：
After receiving terminal receives the FSACK-INIT messages of transmitting terminal transmission, FSACK-ACK is sent from the receiving terminal total interface
Message；
After the transmitting terminal receives first FSACK-ACK message, verify unique in the FSACK-ACK messages
Whether identifier and the unique identifier in the FSACK-INIT messages are identical；
If identical, the transmitting terminal receives the path i.e. destination paths of the FSACK-ACK messages from first to described
Receiving terminal replys FSACK-FINAL messages；
After the receiving terminal receives the FSACK-FINAL messages, selection confirmation message is sent from the destination path.
2. according to the method for claim 1, it is characterised in that pre-defined three types message format, wherein, described three
Type message is FSACK-INIT messages, FSACK-ACK messages, FSACK-FINAL messages.
3. according to the method for claim 2, it is characterised in that FSACK-INIT message formats include type of message X i.e.
Type=X, data block identifier position Chunk Flags, message length Length, unique identifier Unique Identity.
4. according to the method for claim 2, it is characterised in that FSACK-ACK message formats include type of message Y i.e.
Type=Y, data block identifier position Chunk Flags, message length Length, unique identifier Unique Identity.
5. according to the method for claim 2, it is characterised in that FSACK-FINAL message formats include type of message Z i.e.
Type=Z, data block identifier position Chunk Flags, message length Length, reserved field Reserved.
6. according to the method for claim 1, it is characterised in that unique identifier refers to timestamp.
7. according to the method for claim 1, it is characterised in that transmitting terminal sends FSACK-INIT messages to connecing from main path
Receiving end, if multipath transfer pattern, then any one paths are selected to send the FSACK-INIT messages to receiving terminal.
8. according to the method for claim 1, it is characterised in that if differing, directly abandon this message.
9. according to the method for claim 1, it is characterised in that transmitting terminal timing sends FSACK-INIT messages.
10. a kind of fast path answering system, it is characterised in that including transmitting terminal, receiving terminal；Wherein, the transmitting terminal and institute
Receiving terminal is stated to be connected；
Receiving terminal, for receive transmitting terminal transmission FSACK-INIT messages after, from total interface send FSACK-ACK messages；
The transmitting terminal, after receiving first FSACK-ACK message, verify in the FSACK-ACK messages
Whether unique identifier and the unique identifier in the FSACK-INIT messages are identical；
If identical, the path i.e. destination path that the FSACK-ACK messages are received from first is replied to the receiving terminal
FSACK-FINAL messages；
The receiving terminal, after receiving the FSACK-FINAL messages, selection confirmation message is sent from the destination path.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410838459.9A CN104506434B (en) | 2014-12-29 | 2014-12-29 | A kind of fast path answer method and system |
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| CN201410838459.9A CN104506434B (en) | 2014-12-29 | 2014-12-29 | A kind of fast path answer method and system |
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| CN104506434B true CN104506434B (en) | 2018-03-09 |
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| CN105141397A (en) * | 2015-08-03 | 2015-12-09 | 浪潮(北京)电子信息产业有限公司 | Method and device for sending selected and confirmed SACK messages |
| CN108881008B (en) * | 2017-05-12 | 2021-06-08 | 华为技术有限公司 | Data transmission method, device and system |
| CN117461289A (en) * | 2021-12-28 | 2024-01-26 | 华为技术有限公司 | Message transmission method and device |
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| US5936964A (en) * | 1997-04-18 | 1999-08-10 | Telefonaktiebolaget Lm Ericsson | Round-trip delay optimization of multiplexed speech channels |
| US7453885B2 (en) * | 2004-10-13 | 2008-11-18 | Rivulet Communications, Inc. | Network connection device |
| CN100463418C (en) * | 2005-11-23 | 2009-02-18 | 杭州华三通信技术有限公司 | Network performance test method, system and network device |
| CN101631357A (en) * | 2008-07-18 | 2010-01-20 | 中国移动通信集团公司 | Method, device and terminal for selective response packet transmission |
| CN101695171B (en) * | 2009-10-16 | 2013-02-27 | 中兴通讯股份有限公司 | Method utilizing stream control transmission protocol to measure network transmission quality and device thereof |
| CN102546106B (en) * | 2011-12-28 | 2014-03-26 | 南京邮电大学 | Multipath parallel transmission method facing satellite network |
| CN103259640B (en) * | 2013-05-28 | 2016-08-31 | 杭州华三通信技术有限公司 | A kind of method and apparatus of lock in time |
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Effective date of registration: 20180827 Address after: 200436 Room 411, No. three, JIANGCHANG Road, Jingan District, Shanghai, 411 Patentee after: Shanghai wave Cloud Computing Service Co., Ltd. Address before: 100085 floor 1, C 2-1, No. 2, Shang Di Road, Haidian District, Beijing. Patentee before: Electronic information industry Co.,Ltd of the tide (Beijing) |