CN110022261A - Multi-path transmission method and apparatus based on SCTP-CMT transport protocol - Google Patents
Multi-path transmission method and apparatus based on SCTP-CMT transport protocol Download PDFInfo
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- CN110022261A CN110022261A CN201910420196.2A CN201910420196A CN110022261A CN 110022261 A CN110022261 A CN 110022261A CN 201910420196 A CN201910420196 A CN 201910420196A CN 110022261 A CN110022261 A CN 110022261A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/24—Multipath
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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
- H04L47/12—Avoiding congestion; Recovering from congestion
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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
- H04L47/25—Flow control; Congestion control with rate being modified by the source upon detecting a change of network conditions
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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
- H04L47/29—Flow control; Congestion control using a combination of thresholds
Abstract
The embodiment of the present invention provides a kind of multi-path transmission method and apparatus based on SCTP-CMT transport protocol.The described method includes: the data packet after grouping is sent by each group of paths respectively according to the transmission stability of the quantity of group of paths and each group of paths；Wherein, the group of paths includes one or more transmission paths；If judgement knows that receiving end buffer data size is more than specified cache threshold, the data transmission rate of one or more group of paths is reduced, or the data of the one or more group of paths of pause are sent.Due to having used more transmission links, the transmission quantity of data is not only increased, the transmission pressure of each of the links is also reduced, can be improved the efficiency of data transmission；Simultaneously when receiving end caching is excessive, rate control can be carried out according to the buffer data size of receiving end, solve receiving end buffer area since data volume is excessive, the problem of resulting in blockage, reduce the efficiency of data receiver, influence the efficiency of entire communication link.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of multi-path transmission sides based on SCTP-CMT transport protocol
Method and equipment.
Background technique
As Time Technology development is more and more rapider, the requirement to network communication quality is higher and higher, to data transmission
More stringent requirements are proposed for speed, accuracy, real-time.The appearance of streaming media transmission protocol SCTP compensates for Transmission Control Protocol list place
Main disadvantage, it can provide stable, orderly data delivery service between the two endpoints.SCTP be actually one towards
The agreement of connection, but the connection of the concept ratio TCP of SCTP coupling has wider array of concept, and SCTP carries out the defect of TCP
It is some perfect so that signalling has a higher reliability, the design of SCTP includes congestion control appropriate, prevent from spreading unchecked and
Spoof attack, more preferably real-time performance and more belongingnesses are supported.
Multi-host mainframe is exactly the host with multiple network interfaces, therefore can be accessed by multiple IP address
This host.In tcp, connection refers to a communication channel between two endpoints.SCTP introduces united concept, it is deposited
It is between two hosts, but multiple interfaces on every host can be used and cooperate.And the safety of SCTP is higher,
One SCTP association is defined as: [one group of IP address of host A]+[port of host A]+[one group of IP address of host B]+[main
The port of machine B].Therefore, any one of corresponding group in every one end IP address all can be used as corresponding source address/destination address
This secondary association is indicated, is shaken hands by four roads, realizes the exchange of both ends SCTP main-machine communication state.
SCTP streaming media transmission protocol has formulated the scheme of multi-path transmission, but the side of multipath transfer is not implemented
Method, primary communication can only use single link.SCTP-CMT agreement is to a supplement of Stream Control Transmission Protocol, it not only can be more
Carry out data transmission simultaneously on paths, and when certain paths breaks down, other paths can timely be selected to carry out
Data transmission, and new route is not required to as tradition SCTP since slow start stage, therefore can greatly improve bandwidth benefit
With rate and handling capacity.
The channel utilization of SCTP-CMT improves, and corresponding volume of transmitted data can also be increased accordingly, will certainly be docked in this way
Receiving end is put forward higher requirements, and receiving end buffer area may be excessive due to data volume, results in blockage, and reduces the effect of data receiver
Rate influences the efficiency of entire communication link.
Summary of the invention
The embodiment of the present invention provides a kind of multi-path transmission method and apparatus based on SCTP-CMT transport protocol, for solving
Certainly in the prior art SCTP-CMT channel utilization improve, and cause receiving end buffer area data block the problem of.
In a first aspect, the embodiment of the present invention provides a kind of multi-path transmission method based on SCTP-CMT transport protocol, packet
It includes:
According to the transmission stability of the quantity of group of paths and each group of paths, the data packet after grouping is passed through into each road respectively
Diameter group is sent；Wherein, the group of paths includes one or more transmission paths；
If judgement knows that receiving end buffer data size is more than specified cache threshold, the number of one or more group of paths is reduced
According to transmission rate, or suspend the data transmission of one or more group of paths.
Second aspect, the embodiment of the present invention provide a kind of multi-path transmission method based on SCTP-CMT transport protocol, packet
It includes:
By one or more group of paths received data packets, the group of paths includes one or more transmission paths；
Buffer data size is fed back to transmitting terminal, so that transmitting terminal judgement knows that receiving end buffer data size is more than specified caching
When threshold value, the data transmission rate of one or more group of paths is reduced, or suspends the data transmission of one or more group of paths.
The third aspect, the embodiment of the present invention provide a kind of transmission end device, data transmission blocks and Rate control module；
The data transmission blocks, for will be grouped according to the quantity of group of paths and the transmission stability of each group of paths
Data packet afterwards is sent by each group of paths respectively；Wherein, the group of paths includes one or more transmission paths；
The Rate control module, if being dropped for judging to know that receiving end buffer data size is more than specified cache threshold
The data transmission rate of low one or more group of paths, or suspend the data transmission of one or more group of paths.
Fourth aspect, the embodiment of the present invention provide a kind of receiving end device, including receiving module and feedback module；
The receiving module, for a or multiple group of paths received data packets, the group of paths includes one or more passes
Defeated path；
The feedback module is used for according to amount, so that transmitting terminal judgement knows that receiving end buffer data size is more than specified caching
When threshold value, the data transmission rate of one or more group of paths is reduced, or suspends the data transmission of one or more group of paths.
5th aspect, the embodiment of the present invention provides a kind of electronic equipment, including memory, processor and is stored in memory
Computer program that is upper and can running on a processor, the processor realize the embodiment of the present invention first when executing described program
The step of multi-path transmission method described in aspect or second aspect based on SCTP-CMT transport protocol.
6th aspect, the embodiment of the present invention provide a kind of non-transient computer readable storage medium, are stored thereon with calculating
Machine program is realized when the computer program is executed by processor and is based on described in first aspect of the embodiment of the present invention or second aspect
The step of multi-path transmission method of SCTP-CMT transport protocol.
The embodiment of the present invention provides the multi-path transmission method and apparatus based on SCTP-CMT transport protocol, in transmitting terminal and
Carried out data transmission between receiving end using one or more group of paths, due to having used more transmission links, is not only increased
The transmission quantity of data, also reduces the transmission pressure of each of the links, can be improved the efficiency of data transmission, reduces queuing and prolong
Late；Simultaneously when receiving end caching is excessive, rate control can be carried out according to the buffer data size of receiving end, solve receiving end
Buffer area results in blockage since data volume is excessive, reduces the efficiency of data receiver, influences asking for the efficiency of entire communication link
Topic.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is multi-path transmission method transmitting terminal method flow of the embodiment of the present invention based on SCTP-CMT transport protocol
Figure；
Fig. 2 is multi-path transmission method receiving end method flow of the embodiment of the present invention based on SCTP-CMT transport protocol
Figure；
Fig. 3 single path group of the embodiment of the present invention tests topological diagram；
Fig. 4 multipath group of the embodiment of the present invention tests topological diagram；
Fig. 5 is the queue time delay simulation curve comparison figure of link nodes of the embodiment of the present invention and prior art node；
Fig. 6 is the analogous diagram of data communication of embodiment of the present invention jitter rate；
Fig. 7 is link queue of embodiment of the present invention queuing delay analogous diagram；
Fig. 8 is a kind of transmitting terminal apparatus structure schematic diagram of the embodiment of the present invention；
Fig. 9 is a kind of receiving end device structural schematic diagram of the embodiment of the present invention；
Figure 10 is the entity structure schematic diagram of a kind of electronic equipment of the embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Existing multi-path routing algorithms are to distribute data packet automatically according to the efficiency of transmission of transmission path, minimize every
The number of packet overstock in transmission path.But processing of this method on receiving end caches also shows slightly insufficient, each path
Transmission rate is different, easily leads to the random ordering of receiving end data grouping, causes very big influence to receiving end caching, drops
The transmission rate of low link.
Fig. 1 is multi-path transmission method transmitting terminal method flow of the embodiment of the present invention based on SCTP-CMT transport protocol
Figure.To solve the above problems, the embodiment of the present invention provides a kind of multi-path transmission method based on SCTP-CMT transport protocol, it is
Transmitting terminal method, executing subject are sending ending equipment, comprising:
100, according to the transmission stability of the quantity of group of paths and each group of paths, the data packet after grouping is passed through respectively
Each group of paths is sent；Wherein, the group of paths includes one or more transmission paths；
Wherein, the transmission stability of group of paths, can link transmission bandwidth according to transmission paths every in group of paths, speed
Rate, packet loss transmit and receive delay and are lined up the composite index acquisition of one or more factors such as duration.
The embodiment of the present invention is divided data packet to be transmitted according to the stability of group of paths quantity and each group of paths
Group, wherein data packet grouping includes data packet encoding and decoding, and the data packet after grouping is divided by scheduled queuing mechanism
It is fitted in different group of paths and is transmitted, maintain the balance of transmission network.The embodiment of the present invention can be in all group of paths
While transmission grouping after data packet, can also be according to the size of data to be transmitted amount, selected section group of paths simultaneous transmission
Data packet after grouping.Such as group of paths a total of 4, data to be transmitted can be divided into 4 data packets, be separately dispensed into 4
Simultaneous transmission in group of paths；Or data to be transmitted is divided into 2 data packets, it is separately dispensed into simultaneous transmission in 2 group of paths,
The embodiment of the present invention is not construed as limiting this.
101, if judgement knows that receiving end buffer data size is more than specified cache threshold, reduce one or more group of paths
Data transmission rate, or suspend the data of one or more group of paths and send.
After transmitting terminal sends data packets to receiving end, judge that receiving end is slow by the buffer data size of receiving end feedback
The congestion risk for depositing area reduces the congestion risk of receiving end buffer area by sending rate control.
Specifically, the data hair of All Paths group can be reduced when receiving end buffer data size is more than specified cache threshold
Transmission rate, the data transmission rate for perhaps reducing part path group perhaps suspend the data transmission or pause of All Paths group
The data of part path group are sent.
In the embodiment of the present invention, the specified cache threshold can be safeguarded by transmitting terminal, can also be safeguarded by receiving end.
When being safeguarded by receiving end, it is specified slow can to feed back it when feeding back its buffer data size to transmitting terminal simultaneously for receiving end
Threshold value is deposited, or indicates its specified cache threshold to transmitting terminal in connection setup.
The embodiment of the present invention provides the multi-path transmission method transmitting terminal method based on SCTP-CMT transport protocol, is sending
Carried out data transmission between end and receiving end using one or more group of paths, due to having used more transmission links, not only
The transmission quantity for increasing data also reduces the transmission pressure of each of the links, can be improved the efficiency of data transmission, reduces row
Team's delay；Simultaneously when receiving end caching is excessive, rate control can be carried out according to the buffer data size of receiving end, solve and connect
Receiving end buffer area results in blockage since data volume is excessive, reduces the efficiency of data receiver, influences the efficiency of entire communication link
Problem.The method that transmitting terminal of the embodiment of the present invention uses rate control reduces the pressure of receiving end buffer area.
It is based on the above embodiment, step 100, described according to the quantity of group of paths and the transmission stability of each group of paths,
Data packet after grouping is sent by each group of paths respectively, before further include:
Obtain the link parameter of all transmission paths, the link parameter include channel width, send delay, packet loss and
One or more of queue queue's length；
One or more transmission paths that link parameter is met specified Parameter Conditions obtain one as a group of paths
Or multiple group of paths.
The embodiment of the present invention is grouped all transmission paths, and the foundation of grouping is link parameter.It is all obtaining
After the link parameter of transmission path, the link parameter of more all transmission paths passes one or more similar in link parameter
Defeated path is as a group of paths, it is hereby achieved that one or more group of paths, the chain of the transmission path of the same group of paths
Road parameter is similar, and the link parameter difference of the transmission path of different group of paths is larger.The path packet method of the embodiment of the present invention,
The data transmission rate for avoiding the different transmission path in a group of paths is inconsistent, and leads to the unrest of receiving end data grouping
The problem of sequence, improves link transmission rate.
Based on the above embodiment, step 101, if the judgement knows that receiving end buffer data size is more than specified caching threshold
Value then reduces the data transmission rate of one or more group of paths, or suspends the data transmission of one or more group of paths, tool
Body includes:
If judgement knows that receiving end buffer data size is more than the first specified cache threshold, according to predetermined reduction of speed ratio, drop
The data transmission rate of low one or more group of paths；
If judgement knows that receiving end buffer data size is more than the second specified cache threshold, suspend one or more group of paths
Data send；
Wherein, the described second specified cache threshold is greater than the described first specified cache threshold.
As previously mentioned, the data of All Paths group can be reduced when receiving end buffer data size is more than specified cache threshold
Transmission rate, the data transmission rate for perhaps reducing part path group perhaps suspend the data transmission or temporary of All Paths group
The data for stopping part path group are sent.
Specifically, specified cache threshold can also be classified setting, such as the first specified cache threshold, the second specified caching threshold
Value or even third specify cache threshold, the 4th specified cache threshold etc., and the present invention is not especially limit this, as long as
Each cache threshold is not identical.
For example, normal cache data volume is A, the first specified cache threshold be can be set to A* (1+70%), and second is specified
Cache threshold can be set to A* (1+90%), when buffer data size is more than the 70% of normal cache data volume, can reduce
The data transmission rate of one or more group of paths, such as carry out data transmission by the 50% of normal speed；Work as buffer data size
More than normal cache data volume 90% when, the data for suspending one or more group of paths are sent.The above is only citings, specifically answer
Used time, specified cache threshold can be configured according to the actual situation, and the embodiment of the present invention is not construed as limiting this.
It should be understood that transmitting terminal can gradually restore transmission rate when the buffer data size when receiving end gradually decreases.
For example, when buffer data size is from 90% more than normal cache data volume, when dropping to 70% more than normal cache data volume,
It can be transmitted with the data of recovered part group of paths, be carried out data transmission by the 50% of normal speed, naturally it is also possible to do not restore, etc.
Start to transmit data again again when the buffer data size of receiving end waiting is without departing from normal cache amount.
Based on the above embodiment, the multi-path transmission method based on SCTP-CMT transport protocol further include:
If receiving the data packet retransmission information of receiving end transmission, transmission stability is selected to meet specified desired target road
Diameter group；The data packet retransmission information includes data packet sequence number, former data packet grouping transmitting path, sending time and delay time
One of or it is a variety of；
Data packet is retransmitted according to the data packet retransmission acquisition of information, and the re-transmission is transmitted by the destination path group
Data packet.
As previously mentioned, the transmission stability of group of paths, it can be according to the link transmission band of transmission paths every in group of paths
Width, packet loss, transmits and receives delay and is lined up the composite index acquisition of one or more factors such as duration rate.The present invention is real
It applies in example, the destination path group that transmission stability can be selected according to actual needs to meet the requirements, carries out data re-transmission.
In the embodiment of the present invention, packet loss occurs in receiving end, when needing to retransmit data, transmitting terminal needs first to detect each road
The parameter of each transmission path of diameter group, select one it is most stable, i.e., packet loss, queueing delay, transmission speed, bandwidth availability ratio be most
Balanced link is retransmitted, and can be greatly improved the success rate and stability of re-transmission, be advantageously reduced the pressure of link transmission,
And do not influence the data transmission of other links, indirect improve data transfer rate and channel utilization.
To sum up, the embodiment of the present invention provides the multi-path transmission method transmitting terminal method based on SCTP-CMT transport protocol,
Carried out data transmission between transmitting terminal and receiving end using one or more group of paths, due to having used more chains
Road not only increases the transmission quantity of data, also reduces the transmission pressure of each of the links, can be improved the efficiency of data transmission,
Reduce queueing delay；Simultaneously when receiving end caching is excessive, rate control can be carried out according to the buffer data size of receiving end,
Receiving end buffer area is solved since data volume is excessive, is resulted in blockage, the efficiency of data receiver is reduced, influences entire communication link
Efficiency the problem of.
Data of the present invention transmit more stable, link packet, include multilink in every group of link, and one or several
The blocking of link disconnects the transmission for not influencing entire Transmission system, transmission data that still can be stable, therefore link is stablized
Property is very high.
Fig. 2 is multi-path transmission method receiving end method flow of the embodiment of the present invention based on SCTP-CMT transport protocol
Figure.Corresponding with the transmitting terminal method, the embodiment of the present invention also provides a kind of multichannel based on SCTP-CMT transport protocol
Diameter transmission method, is receiving end method, and executing subject is receiving device, comprising:
200, by one or more group of paths received data packets, the group of paths includes one or more transmission paths；
201, buffer data size is fed back to transmitting terminal, so that transmitting terminal judgement knows that receiving end buffer data size is more than specified
When cache threshold, the data transmission rate of one or more group of paths is reduced, or suspends the data of one or more group of paths
It sends.
The embodiment of the present invention provides the multi-path transmission method receiving end method based on SCTP-CMT transport protocol, is sending
Carried out data transmission between end and receiving end using one or more group of paths, due to having used more transmission links, not only
The transmission quantity for increasing data also reduces the transmission pressure of each of the links, can be improved the efficiency of data transmission, reduces row
Team's delay；Buffer data size has been fed back to transmitting terminal in receiving end simultaneously, and in this way when receiving end caching is excessive, transmitting terminal being capable of root
Rate control is carried out according to the buffer data size of receiving end, receiving end buffer area is solved since data volume is excessive, results in blockage, drop
The efficiency of low data receiver, the problem of influencing the efficiency of entire communication link.
Based on the above embodiment, step 200, described by one or more group of paths received data packets, later further include:
According to the data packet sequence number of transmitting terminal, sequence is grouped to received data packet；
It is out-of-order if it exists, then it resequences to the received data packet；
Packet loss if it exists then sends data packet retransmission information to transmitting terminal, and the data packet retransmission information includes data packet
One of serial number, former data packet grouping transmitting path, sending time and delay time are a variety of.
In the embodiment of the present invention, after receiving end receives data packet, client computer will not be forwarded immediately to, but by data grouping
It stores to receiving end buffer area, receiving end is ranked up data grouping, and sort algorithm is consistent with transmitting terminal grouping serial number, checks
Whether there is random ordering, rearranged if out-of-order, if complete without out-of-order and data, sends the data to client computer.It receives
After holding buffer area to arrange out-of-order data packet, if discovery has packet loss, data packet retransmission information, request retransmission are sent to transmitting terminal
Data；The data packet retransmission information includes data packet sequence number, former data packet grouping transmitting path, sending time and delay time
One of or it is a variety of.Transmitting terminal selects a consistent link, according to data packet sequence according to the data packet retransmission information received
Number, data packet to be retransmitted is obtained, data packet to be retransmitted is sent to by receiving end by selected consistent link.
In the embodiment of the present invention, packet loss occurs in receiving end, when needing to retransmit data, by sending data packet to transmitting terminal
Retransmission information, request retransmission, it is ensured that the accuracy of data.Meanwhile transmitting terminal selection consistent link is retransmitted, and can be mentioned significantly
The success rate and stability that height retransmits, advantageously reduce the pressure of link transmission, and do not influence the data transmission of other links,
Indirect improve data transfer rate and channel utilization.
Illustrate the superiority of the embodiment of the present invention below by concrete example emulation.
Fig. 3 single path group of the embodiment of the present invention tests topological diagram, and Fig. 4 multipath group of the embodiment of the present invention tests topological diagram.
Fig. 3 is single group transmission link, totally two channels.Link parameter is bandwidth 10Mb, and be delayed 45ms, queue length 20.Fig. 4 is multiple groups
Transmission link, this example approach uses two groups of links, every group of two channels, and channel parameter difference is larger, and one group is bandwidth
10Mb, be delayed 45ms, queue length 20, and another group is bandwidth 50Mb, and be delayed 55ms, and queue length is 50.
Firstly, building simulated environment of the NS2 in ubuntu, the tcl script of control link transmission is write, tests packet loss
Awk script；Secondly, operation tcl script, obtains the tr file of link parameter, the awk Parameter analysis script of NS2, analysis are utilized
Parameter in tr file obtains the Parameter File of corresponding handling capacity, delay jitter, finally, drawing relevant parameter with gnuplot
Curve, analyze result, it was therefore concluded that.
As shown in figure 4,0 node is sender node, 7 nodes are receiving terminal node, and 1 node and 2 nodes are respectively two groups
The sending node of link, 8 nodes and 9 nodes are respectively the receiving node of two groups of links, remaining node is link trunking node.
Fig. 5 is the queue time delay simulation curve comparison figure of link nodes of the embodiment of the present invention and prior art node.From Fig. 5
It can be seen that this example approach link nodes, queue length is relatively stable, therefore also more stable, the channel of queue delay
Utilization rate is high.
Fig. 6 is the analogous diagram of data communication of embodiment of the present invention jitter rate, specifically, being that the delay of link shown in Fig. 4 is trembled
The curve of dynamic rate, it is seen then that channel utilization is high, and number of queues is stablized, therefore queuing delay is smaller, and delay jitter is relatively steady
It is fixed.
Fig. 7 is link queue of embodiment of the present invention queuing delay analogous diagram, it is seen then that queue length of the embodiment of the present invention is opposite
It is more stable, therefore queue delay is also more stable, channel utilization is high.
The embodiment of the present invention provides a kind of transmission end device, and Fig. 8 is that a kind of transmitting terminal apparatus structure of the embodiment of the present invention shows
It is intended to, including data transmission blocks and Rate control module；
The data transmission blocks 800, for will divide according to the quantity of group of paths and the transmission stability of each group of paths
Data packet after group is sent by each group of paths respectively；Wherein, the group of paths includes one or more transmission paths；
The Rate control module 801, if for judging to know that receiving end buffer data size is more than specified cache threshold,
The data transmission rate of one or more group of paths is reduced, or suspends the data transmission of one or more group of paths.
The embodiment of the present invention provides a kind of receiving end device, and Fig. 9 is that a kind of receiving end device structure of the embodiment of the present invention is shown
It is intended to, including receiving module and feedback module；
The receiving module 900, for a or multiple group of paths received data packets, the group of paths includes one or more
Transmission path；
The feedback module 901 is used for according to amount, so that transmitting terminal judgement knows that receiving end buffer data size is more than specified slow
When depositing threshold value, the data transmission rate of one or more group of paths is reduced, or suspends the data hair of one or more group of paths
It send.
Figure 10 is the entity structure schematic diagram of a kind of electronic equipment of the embodiment of the present invention, as shown in Figure 10, the electronic equipment
It may include: processor (processor) 1001,1002, memory communication interface (Communications Interface)
(memory) 1003 and communication bus 1004, wherein processor 1001, communication interface 1002, memory 1003 are total by communication
Line 1004 completes mutual communication.Processor 1001 can call the logical order in memory 1003, to execute such as lower section
Method: according to the transmission stability of the quantity of group of paths and each group of paths, the data packet after grouping is passed through into each group of paths respectively
It is sent；Wherein, the group of paths includes one or more transmission paths；If judgement knows that receiving end buffer data size is more than
Specified cache threshold then reduces the data transmission rate of one or more group of paths, or suspends one or more group of paths
Data are sent.Or execute following method: by one or more group of paths received data packets, the group of paths include one or
Multiple transmission paths；Buffer data size is fed back to transmitting terminal, so that transmitting terminal judgement knows that receiving end buffer data size is more than to refer to
When determining cache threshold, the data transmission rate of one or more group of paths is reduced, or suspends the number of one or more group of paths
According to transmission.
In addition, the logical order in above-mentioned memory 1003 can be realized by way of SFU software functional unit and conduct
Independent product when selling or using, can store in a computer readable storage medium.Based on this understanding, originally
Substantially the part of the part that contributes to existing technology or the technical solution can be in other words for the technical solution of invention
The form of software product embodies, which is stored in a storage medium, including some instructions to
So that a computer equipment (can be personal computer, server or the network equipment etc.) executes each implementation of the present invention
The all or part of the steps of example the method.And storage medium above-mentioned include: USB flash disk, mobile hard disk, read-only memory (ROM,
Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic or disk etc. it is various
It can store the medium of program code.
The embodiment of the present invention discloses a kind of computer program product, and the computer program product is non-transient including being stored in
Computer program on computer readable storage medium, the computer program include program instruction, when described program instructs quilt
When computer executes, computer is able to carry out method provided by above-mentioned each method embodiment, for example, according to group of paths
The transmission stability of quantity and each group of paths sends the data packet after grouping by each group of paths respectively；Wherein, institute
Stating group of paths includes one or more transmission paths；If judgement knows that receiving end buffer data size is more than specified cache threshold,
The data transmission rate of one or more group of paths is reduced, or suspends the data transmission of one or more group of paths.Or it holds
The following method of row: by one or more group of paths received data packets, the group of paths includes one or more transmission paths；To
Transmitting terminal feeds back buffer data size, when knowing that receiving end buffer data size is more than specified cache threshold for transmitting terminal judgement, drop
The data transmission rate of low one or more group of paths, or suspend the data transmission of one or more group of paths.
The embodiment of the present invention provides a kind of non-transient computer readable storage medium, the non-transient computer readable storage
Medium storing computer instruction, the computer instruction make the computer execute side provided by above-mentioned each method embodiment
Method, for example, according to the transmission stability of the quantity of group of paths and each group of paths, the data packet after grouping is passed through respectively
Each group of paths is sent；Wherein, the group of paths includes one or more transmission paths；If judgement knows that receiving end caches number
It is more than specified cache threshold according to amount, then reduces the data transmission rate of one or more group of paths, or pause one or more
The data of group of paths are sent.Or execute following method: by one or more group of paths received data packets, the group of paths packet
Include one or more transmission paths；Buffer data size is fed back to transmitting terminal, so that transmitting terminal judgement knows that receiving end is data cached
When amount is more than specified cache threshold, the data transmission rate of one or more group of paths is reduced, or suspends one or more roads
The data of diameter group are sent.
The apparatus embodiments described above are merely exemplary, wherein described, unit can as illustrated by the separation member
It is physically separated with being or may not be, component shown as a unit may or may not be physics list
Member, it can it is in one place, or may be distributed over multiple network units.It can be selected according to the actual needs
In some or all of the modules achieve the purpose of the solution of this embodiment.Those of ordinary skill in the art are not paying creativeness
Labour in the case where, it can understand and implement.
Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can
It realizes by means of software and necessary general hardware platform, naturally it is also possible to pass through hardware.Based on this understanding, on
Stating technical solution, substantially the part that contributes to existing technology can be embodied in the form of software products in other words, should
Computer software product may be stored in a computer readable storage medium, such as ROM/RAM, magnetic disk, CD, including several fingers
It enables and using so that a computer equipment (can be personal computer, server or the network equipment etc.) executes each implementation
Method described in certain parts of example or embodiment.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of multi-path transmission method based on SCTP-CMT transport protocol characterized by comprising
According to the transmission stability of the quantity of group of paths and each group of paths, the data packet after grouping is passed through into each group of paths respectively
It is sent；Wherein, the group of paths includes one or more transmission paths；
If judgement knows that receiving end buffer data size is more than specified cache threshold, the data hair of one or more group of paths is reduced
Transmission rate, or suspend the data transmission of one or more group of paths.
2. the multi-path transmission method according to claim 1 based on SCTP-CMT transport protocol, which is characterized in that described
According to the transmission stability of the quantity of group of paths and each group of paths, the data packet after grouping is carried out by each group of paths respectively
It sends, before further include:
The link parameter of all transmission paths is obtained, the link parameter includes channel width, sends delay, packet loss and queuing
One or more of queue length；
One or more transmission paths that link parameter is met specified Parameter Conditions obtain one or more as a group of paths
A group of paths.
3. the multi-path transmission method according to claim 1 based on SCTP-CMT transport protocol, which is characterized in that described
If judgement knows that receiving end buffer data size is more than specified cache threshold, the data for reducing one or more group of paths send speed
Rate, or suspend the data transmission of one or more group of paths, it specifically includes:
If judgement knows that receiving end buffer data size is more than the first specified cache threshold, according to predetermined reduction of speed ratio, one is reduced
The data transmission rate of a or multiple group of paths；
If judgement knows that receiving end buffer data size is more than the second specified cache threshold, suspend the number of one or more group of paths
According to transmission；
Wherein, the described second specified cache threshold is greater than the described first specified cache threshold.
4. the multi-path transmission method according to claim 1-3 based on SCTP-CMT transport protocol, feature
It is, the method also includes:
If receiving the data packet retransmission information of receiving end transmission, transmission stability is selected to meet specified desired destination path
Group；The data packet retransmission information includes data packet sequence number, former data packet grouping transmitting path, sending time and in delay time
It is one or more；
Data packet is retransmitted according to the data packet retransmission acquisition of information, and the re-transmission data are transmitted by the destination path group
Packet.
5. a kind of multi-path transmission method based on SCTP-CMT transport protocol characterized by comprising
By one or more group of paths received data packets, the group of paths includes one or more transmission paths；
Buffer data size is fed back to transmitting terminal, so that transmitting terminal judgement knows that receiving end buffer data size is more than specified cache threshold
When, the data transmission rate of one or more group of paths is reduced, or suspend the data transmission of one or more group of paths.
6. the multi-path transmission method according to claim 5 based on SCTP-CMT transport protocol, which is characterized in that described
By one or more group of paths received data packets, later further include:
According to the data packet sequence number of transmitting terminal, sequence is grouped to received data packet；
It is out-of-order if it exists, then it resequences to the received data packet；
Packet loss if it exists, then to transmitting terminal send data packet retransmission information, the data packet retransmission information include data packet sequence number,
One of former data packet grouping transmitting path, sending time and delay time are a variety of.
7. a kind of transmission end device, which is characterized in that including data transmission blocks and Rate control module；
The data transmission blocks, for according to the quantity of group of paths and the transmission stability of each group of paths, after grouping
Data packet is sent by each group of paths respectively；Wherein, the group of paths includes one or more transmission paths；
The Rate control module, if reducing by one for judging to know that receiving end buffer data size is more than specified cache threshold
The data transmission rate of a or multiple group of paths, or suspend the data transmission of one or more group of paths.
8. a kind of receiving end device, which is characterized in that including receiving module and feedback module；
The receiving module, for a or multiple group of paths received data packets, the group of paths includes one or more transmission roads
Diameter；
The feedback module is used for according to amount, so that transmitting terminal judgement knows that receiving end buffer data size is more than specified cache threshold
When, the data transmission rate of one or more group of paths is reduced, or suspend the data transmission of one or more group of paths.
9. a kind of electronic equipment including memory, processor and stores the calculating that can be run on a memory and on a processor
Machine program, which is characterized in that realize when the processor executes described program and be based on as described in any one of claim 1 to 7
The step of multi-path transmission method of SCTP-CMT transport protocol.
10. a kind of non-transient computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer
Realize that the multipath as described in any one of claim 1 to 7 based on SCTP-CMT transport protocol passes when program is executed by processor
The step of transmission method.
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