CN107026800B - A kind of jamming control method and device - Google Patents
A kind of jamming control method and device Download PDFInfo
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- CN107026800B CN107026800B CN201710244841.0A CN201710244841A CN107026800B CN 107026800 B CN107026800 B CN 107026800B CN 201710244841 A CN201710244841 A CN 201710244841A CN 107026800 B CN107026800 B CN 107026800B
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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
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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
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
- H04L47/2408—Traffic characterised by specific attributes, e.g. priority or QoS for supporting different services, e.g. a differentiated services [DiffServ] type of service
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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
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
- H04L47/2416—Real-time traffic
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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
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
- H04L47/2441—Traffic characterised by specific attributes, e.g. priority or QoS relying on flow classification, e.g. using integrated services [IntServ]
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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
- H04L47/27—Evaluation or update of window size, e.g. using information derived from acknowledged [ACK] packets
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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
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
- H04L47/2483—Traffic characterised by specific attributes, e.g. priority or QoS involving identification of individual flows
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Abstract
The embodiment of the invention provides a kind of jamming control method and devices, applied to transmitting terminal, the described method includes: judging whether target stream belonging to the target subflow on Target Link is delay sensitive stream, wherein, the Target Link is the link that congestion occurs, and the target subflow is any of each subflow of Target Link transmission；If it is, the acquisition transmission target subflow does not transmit data required transmission time under the first congestion window, wherein first congestion window is the congestion window that presently described Target Link is directed to the target subflow；Based on the transmission time, the delay parameter of the target subflow is determined, wherein the delay parameter is used to characterize the urgency level of the target stream；According to the delay parameter, the congestion window of the target subflow is adjusted.By implementing scheme provided by the embodiment of the present invention, the propagation delay time of delay sensitive stream can be reduced while avoiding link congestion.
Description
Technical field
The present invention relates to transmission control technology fields, more particularly to a kind of jamming control method and device.
Background technique
Multipath Transmission control protocol (MultiPath Transmission Control Protocol, MPTCP) is a kind of
Using the transport layer protocol of mulitpath concurrent transmission, throughput end to end can be improved.The agreement is removed and establishes target stream
Other than main path, the identical with main path sending and receiving end multiple from path of target stream are also set up, target stream is divided into multiple subflows
And respectively by main path, from path mulitpath simultaneous transmission, and then improve the handling capacity of network.When multiple data flows simultaneously
In transmission over networks, the main path of different data streams is inevitably based upon same chain road, same chain from path
Road can transmit multiple data flows, and then lead to the problem of congestion packet loss, need to carry out congestion control at this time.
The method of existing congestion control are as follows: the congestion window for the subflow that the chain for generating congestion road is transmitted is halved, is gathered around
Filling in window is the data volume that can at most send within a two-way time, the number that will can at most send in a two-way time
Halve according to amount, the data volume into congestion link can be effectively reduced, and then reduce the transmission quantity of each subflow on congestion link, with
Avoid link congestion.
But halve the congestion window of each subflow, the efficiency of transmission of the corresponding data flow of subflow, Jin Eryan can be reduced
Long propagation delay time.However, existing for requiring propagation delay time harsh, more urgent data flow, ability in data transmission
Domain personnel are referred to as delay sensitive stream.For delay sensitive stream, it is corresponding that the extension of propagation delay time will lead to data flow
The problem of urgency traffic can not be timely completed.
Summary of the invention
The embodiment of the present invention is designed to provide a kind of jamming control method and device, to avoid the same of link congestion
When, reduce the propagation delay time of delay sensitive stream.Specific technical solution is as follows:
In a first aspect, being applied to transmitting terminal, the method packet the embodiment of the invention provides a kind of jamming control method
It includes:
Judge whether target stream belonging to the target subflow on Target Link is delay sensitive stream, wherein the object chain
Road is the link that congestion occurs, and the target subflow is any of each subflow of Target Link transmission；
If it is, obtain transmit the target subflow do not transmit data under the first congestion window when required transmission
Between, wherein first congestion window is the congestion window that presently described Target Link is directed to the target subflow；
Based on the transmission time, the delay parameter of the target subflow is determined, wherein the delay parameter is for characterizing
The urgency level of the target stream；
According to the delay parameter, the congestion window of the target subflow is adjusted.
Optionally, target stream belonging to the target subflow judged on Target Link whether be delay sensitive stream step
Suddenly, comprising:
Obtain data volume and the deadline of target stream belonging to the target subflow on the Target Link, wherein described
Deadline are as follows: the time point that preset target stream is transmitted；
According to the time delay reference value of network where the data volume, the deadline and the Target Link, calculate
The susceptibility reference value of the target stream, wherein the time delay reference value and the network where the Target Link it is round-trip when
Prolong positive correlation；
Judge whether the susceptibility reference value is greater than predetermined susceptibility threshold；
When the judgment result is yes, the target stream is determined as delay sensitive stream.
Optionally, the time delay according to network where the data volume, the deadline and the Target Link
Reference value, the step of calculating the susceptibility reference value of the target stream, comprising:
Current time is obtained, and poor at the first time according to the current time and deadline acquisition；
The susceptibility reference value T is calculated according to the following formula:
Wherein,For the time delay reference value, c is that the first time is poor, and s is the data volume.
Optionally, described the step of being based on the transmission time, determining the delay parameter of the target subflow, comprising:
The time difference for calculating the deadline and current time, as the second time difference；
According to the following formula, delay parameter d is determined:
Wherein, TcFor the transmission time, D is second time difference.
Optionally, described according to the delay parameter, the step of adjusting the congestion window of the target subflow, includes:
Adjusting parameter P is obtained by following formula:
Wherein, d is the delay parameter, and e is natural constant；
By following formula, the congestion window of the target subflow adjusted is calculated according to adjusting parameter P:
Wherein, wi+1For the congestion window of target subflow i adjusted, wiWork as target subflow i
Preceding congestion window；
According to the calculated congestion window of institute, the target subflow i is sent.
Optionally, it is packaged in the handshake data packet SYN transmitted in the building process of the Target Link and belongs to time delay
The data packet of the subflow of sensitivity stream.
Second aspect, the embodiment of the invention provides a kind of congestion control devices, are applied to transmitting terminal, described device packet
It includes:
Judgment module, for judging whether target stream belonging to the target subflow on Target Link is delay sensitive stream,
In, the Target Link is the link that congestion occurs, and the target subflow is appointing in each subflow of Target Link transmission
One；
Obtain module, if the output result for judgment module be it is yes, obtain the transmission target subflow does not transmit number
According to transmission time required under the first congestion window, wherein first congestion window is presently described Target Link needle
To the congestion window of the target subflow；
Determining module determines the delay parameter of the target subflow, wherein when described for being based on the transmission time
Prolong parameter for characterizing the urgency level of the target stream；
Module is adjusted, for adjusting the congestion window of the target subflow according to the delay parameter.
Optionally, the judgment module, comprising:
First obtain submodule, for obtain target stream belonging to the target subflow on the Target Link data volume and
Deadline, wherein the deadline are as follows: the time point that preset target stream is transmitted；
First computational submodule, for according to net where the data volume, the deadline and the Target Link
The time delay reference value of network calculates the susceptibility reference value of the target stream, wherein the time delay reference value and the Target Link
The round-trip delay of the network at place is positively correlated；
Judging submodule, for judging whether the susceptibility reference value is greater than predetermined susceptibility threshold；
First determines submodule, for it is quick that the target stream to be determined as time delay when the result of judging submodule, which is, is
Induced current.
Optionally, first computational submodule, comprising:
Obtaining unit obtains first for obtaining current time, and according to the current time and the deadline
Time difference；
Computing unit, for calculating the susceptibility reference value T according to the following formula:
Wherein,For the time delay reference value, c is that the first time is poor, and s is the data volume.
Optionally, the determining module, comprising:
Second computational submodule, for calculating the time difference of the deadline and current time, as the second time difference；
Second determines submodule, for according to the following formula, determining delay parameter d:
Wherein, TcFor the transmission time, D is second time difference.
Optionally, the adjustment module, comprising:
Second obtains submodule, for obtaining adjusting parameter P by following formula:
Wherein, d is the delay parameter, and e is natural constant；
Third computational submodule, for calculating the target subflow adjusted according to adjusting parameter P by following formula
Congestion window:
Wherein, wi+1For the congestion window of target subflow i adjusted, wiWork as target subflow i
Preceding congestion window；
Submodule is transmitted, for sending the target subflow i according to the calculated congestion window of institute.
Optionally, it is packaged in the handshake data packet SYN transmitted in the building process of the Target Link and belongs to time delay
The data packet of the subflow of sensitivity stream.
A kind of jamming control method and device provided in an embodiment of the present invention, when the target subflow transmitted on congestion link is
When the subflow of delay sensitive stream, the congestion window of target subflow is adjusted according to delay parameter.Since delay parameter can characterize mesh
The urgency level of target stream belonging to subflow is marked, therefore, the congestion window of target subflow is adjusted according to delay parameter, is equivalent to root
Congestion window is adjusted according to the urgency level of target stream, when link congestion and when target stream is delay sensitive stream, can be taken the circumstances into consideration mesh
The amplitude reduction that subflow congestion window reduces is marked, to reduce the propagation delay time of delay sensitive stream while avoiding link congestion.
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 only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of step flow chart of jamming control method provided in an embodiment of the present invention；
Fig. 2 is the size relation schematic diagram between the adjusting parameter and delay parameter of the embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of congestion control device provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the invention provides a kind of jamming control method and devices, are described in detail individually below.
Firstly, introducing a kind of jamming control method provided in an embodiment of the present invention, this method is applied to transmitting terminal, above-mentioned hair
Sending end can be the terminal sent for data, can also be the intermediate node of data transmission.Specifically, the embodiment of the present invention mentions
The executing subject of the jamming control method of confession can be to operate on transmitting terminal, the virtual bench for congestion control.It is above-mentioned
Device can be special congestion control software, or the feature card of the software of monitoring traffic in network.
As shown in Figure 1, a kind of jamming control method provided in an embodiment of the present invention, specifically comprises the following steps:
S101: judge whether target stream belonging to the target subflow on Target Link is delay sensitive stream, wherein the mesh
Mark link is the link that congestion occurs, and the target subflow is any of each subflow of Target Link transmission；
In MPTCP (MultiPath Transmission Control Protocol, Multipath Transmission control protocol),
When link generation congestion, the congestion window of the subflow on congestion link is halved, halving for congestion window means that data are transmitted
The extension of time delay, undoubtedly traffic affecting is completed.For delay sensitive stream, business, which is unable to complete, will cause loss.Therefore,
Judge whether the target subflow on Target Link is delay sensitive stream, to avoid the delay sensitive stream as caused by link congestion
The problem of business is unable to complete.
Based on experience, the data volume of delay sensitive stream is usually short and small, therefore can judge mesh according to the data volume of target stream
Whether mark stream is delay sensitive stream；Optionally, can also be judged according to the deadline of target stream and/or current time, due to
The prespecified target stream of application layer must complete transmission before deadline at corresponding time point, therefore, according to deadline
And current time can determine the urgency level of target stream, and then determine whether target stream is delay sensitive stream；Further,
It, can also be according to the round-trip delay of network and the data of target stream in view of the transmission speed for being used for transmission the network of data is different
Amount (or deadline of target stream) judgement is directed to the network of transmission data, and it is quick whether which should be judged as time delay
Induced current.For example, a certain data stream claims are transmitted within 50ms, and 4G network higher for transmission speed, the possible number
It can reach delay requirement without being confirmed as delay sensitive stream according to stream；And 2G network lower for transmission speed,
The data flow needs to be confirmed as delay sensitive stream, to obtain the chance of prioritised transmission.
In a kind of optional embodiment, the step of judging delay sensitive stream may include: the mesh obtained on Target Link
Mark data volume and the deadline of target stream belonging to subflow, wherein above-mentioned deadline are as follows: preset target stream is transmitted
Time point；According to the time delay reference value of network where above-mentioned data volume, deadline and above-mentioned Target Link, calculate above-mentioned
The susceptibility reference value of target stream, wherein the round-trip delay of the network where above-mentioned time delay reference value and above-mentioned Target Link is just
It is related；Judge whether above-mentioned susceptibility reference value is greater than predetermined susceptibility threshold；When the judgment result is yes, by above-mentioned target stream
It is determined as delay sensitive stream.
Time delay reference value is the numerical value of preset according to experience, characterization Target Link place network round-trip delay length,
Round-trip delay are as follows: since transmitting terminal sends data, receive the confirmation from receiving end (after receiving end receives data to transmitting terminal
Soon send confirmation), the time delay undergone in total.When above-mentioned network round-trip time delay is higher, that is to say, that above-mentioned network transmission
Data speed is slower, high value time delay reference value being set as in empirical value；Conversely, time delay reference value is set as empirical value
In lower value.For example, time delay reference value is set as in empirical value among the higher network of this round-trip delay of 2G, 3G
High value；In this high bandwidth of data center, the lower network of round-trip delay, time delay reference value is set as in empirical value
Lower value.
Specifically, the susceptibility reference value for calculating target stream can be in the following manner: obtaining current time, and according to upper
It states current time and the acquisition of above-mentioned deadline is poor at the first time；Susceptibility reference value T is calculated according to the following formula:Wherein,For above-mentioned time delay reference value, c is that above-mentioned first time is poor, and s is above-mentioned data volume.Joined by calculating susceptibility
The formula of value is examined it is found that poor smaller at the first time, i.e. the range cutoff time is closer；The value of data volume is smaller, i.e. data flow is total
Data volume is smaller, and the susceptibility reference value of the data flow of above-mentioned two situations is bigger.
After obtaining time delay reference value, judge whether time delay reference value is greater than susceptibility threshold 1.Optionally, susceptibility threshold
Value can also be any number in addition to 1, and the embodiment of the present invention is it is not limited here.Therefore, susceptibility reference value is bigger
Data flow, it is easier to be confirmed as delay sensitive stream.
When judging target stream is delay sensitive stream, the target subflow for belonging to target stream is also harsh to delay requirement.When
When link congestion, in order to shorten the propagation delay time of target subflow, to guarantee the timely completion of business, step S102 is executed；Otherwise,
Illustrate that requirement of the target stream for time delay be not harsh, without considering that target stream completes the transmission spent time.
S102: if it is, obtain transmit the target subflow do not transmit data under the first congestion window required for
Transmission time, wherein first congestion window is the congestion window that presently described Target Link is directed to the target subflow；
When the target stream belonging to the target subflow is delay sensitive stream, the current congestion window of target subflow is obtained, i.e.,
The remaining data amount of first congestion window and target subflow on Target Link.It will be appreciated that the first congestion window
It is equivalent to the transmission speed of the data of current goal subflow, according to above-mentioned transmission speed and above-mentioned remaining data amount, Ke Yiji
It calculates and transfers transmission time required for all data of target subflow under current congestion window.
Calculated transmission time can provide reference for the adjustment of congestion window.
S103: it is based on the transmission time, determines the delay parameter of the target subflow, wherein the delay parameter is used
In the urgency level for characterizing the target stream；
As transmission time be current congestion window under transfer the time required for all data of target subflow, work as transmission
Time is long, needs preferentially to transmit target subflow, and transmission time is longer, more needs target subflow prioritised transmission, therefore, according to
Delay parameter determined by transmission time can characterize the urgency level of target subflow.And target subflow belongs to target stream, into one
Step ground delay parameter can characterize the urgency level of target stream, and propagation delay time is bigger, more urgent.
In a kind of optional embodiment, transmission time and the second time difference calculation delay parameter can be passed through.Due to
Second time difference was the deadline of target stream and the difference of current time, when the transmission time of multiple target subflows is identical,
Delay parameter in the embodiment of the present invention can be directed to deadline different target stream, to further determine that respective objects subflow
Delay parameter.
The delay parameter of target subflow is calculated especially by following manner: calculating the time of deadline and current time
Difference, as the second time difference；According to the following formula, delay parameter d is determined:Wherein, TcFor transmission time, D second
Time difference.In the embodiment of the present invention, target subflow identical for propagation delay time, the second time difference of corresponding target stream is got over
It is small, it is meant that closer apart from the defined deadline, delay parameter is higher, i.e., its urgency level is higher, more needs to accelerate to send
Speed；An angle is changed, for the second time difference identical target stream, if the transmission time of its target subflow is bigger, is passed
It is finished that the target subflow occupied time is more long, then propagation delay time is bigger, it is meant that the target subflow is more urgent.
S104: according to the delay parameter, the congestion window of the target subflow is adjusted.
Adjustment congestion window is actually to calculate new congestion window, and the process of data is sent with new congestion window.
When congestion occurs, congestion window is reduced.Certainly, if congestion window is decreased to a certain degree, congestion problems are solved, can be with
Increase congestion window, to reduce data transmission delay, improve data transfer speed.
In a kind of optional embodiment, it may include: to be joined according to time delay that the step of adjusting congestion window when congestion, which occurs,
Number obtains adjusting parameter, calculates congestion window adjusted according to adjusting parameter, and then transmit according to congestion window adjusted
Target subflow.
The step for obtaining adjusting parameter according to delay parameter, can be by way of setting the threshold value for delay parameter
Implement, when delay parameter is not less than above-mentioned threshold value, adjusting parameter is calculated according to delay parameter；When delay parameter is less than above-mentioned pre-
If when numerical value, setting 1 for adjusting parameter.
Optionally, adjusting parameter P is obtained by following formula:Wherein, d is delay parameter, and e is nature
Constant；By following formula, the congestion window of target subflow adjusted is calculated according to adjusting parameter P:
Wherein, wi+1For the congestion window of target subflow i adjusted, wiFor the current congestion window of target subflow i；According to being calculated
Congestion window out sends target subflow i.In embodiments of the present invention, the relationship between delay parameter d and adjusting parameter P is such as
Shown in Fig. 2, delay parameter d is bigger, and data are more urgent, and adjusting parameter P is smaller, and the amplitude that congestion window reduces is just with target
It flows the Stringency to delay requirement and becomes smaller, to preferentially ensure that the transmission of delay sensitive stream.
A kind of jamming control method provided in an embodiment of the present invention, when the target subflow transmitted on congestion link is that time delay is quick
When the subflow of induced current, the congestion window of target subflow is adjusted according to delay parameter.Since delay parameter can characterize target subflow
Therefore the urgency level of affiliated target stream adjusts the congestion window of target subflow according to delay parameter, is equivalent to according to target
The urgency level of stream adjusts congestion window, when link congestion and when target stream is delay sensitive stream, can take the circumstances into consideration target subflow
The amplitude reduction that congestion window reduces, to reduce the propagation delay time of delay sensitive stream while avoiding link congestion.
On the basis of any of the above-described embodiment, in the handshake data packet SYN that is transmitted in the building process of Target Link
It is packaged with the data packet for belonging to the subflow of delay sensitive stream.That is, in the embodiment of the present invention, in the process of link establishment
In, the data of propagation delay time sensitivity stream are had begun, that further reduces the propagation delay times that propagation delay time sensitivity stream occupies.Into
One step, during constructing link, multilink is established parallel, so that the corresponding subflow of each link transmission, wherein on
It states subflow and belongs to delay sensitive stream, the link establishment mode for establishing link parallel further saves the biography of propagation delay time sensitivity stream
Defeated time delay.
Corresponding to above method embodiment, as shown in figure 3, the embodiment of the invention also provides a kind of congestion control device,
Applied to transmitting terminal, described device includes:
Judgment module 310, for judging whether target stream belonging to the target subflow on Target Link is delay sensitive stream,
Wherein, the Target Link is the link that congestion occurs, and the target subflow is in each subflow of Target Link transmission
Any one；
Obtain module 320, if output result for judgment module be it is yes, obtain the transmission target subflow and do not transmit
Data required transmission time under the first congestion window, wherein first congestion window is presently described Target Link
For the congestion window of the target subflow；
Determining module 330 determines the delay parameter of the target subflow, wherein described for being based on the transmission time
Delay parameter is used to characterize the urgency level of the target stream；
Module 340 is adjusted, for adjusting the congestion window of the target subflow according to the delay parameter.
A kind of congestion control device provided in an embodiment of the present invention, when the target subflow transmitted on congestion link is that time delay is quick
When the subflow of induced current, the congestion window of target subflow is adjusted according to delay parameter.Since delay parameter can characterize target subflow
Therefore the urgency level of affiliated target stream adjusts the congestion window of target subflow according to delay parameter, is equivalent to according to target
The urgency level of stream adjusts congestion window, when link congestion and when target stream is delay sensitive stream, can take the circumstances into consideration target subflow
The amplitude reduction that congestion window reduces, to reduce the propagation delay time of delay sensitive stream while avoiding link congestion.
Optionally, the judgment module 310, comprising:
First obtain submodule, for obtain target stream belonging to the target subflow on the Target Link data volume and
Deadline, wherein the deadline are as follows: the time point that preset target stream is transmitted；
First computational submodule, for according to net where the data volume, the deadline and the Target Link
The time delay reference value of network calculates the susceptibility reference value of the target stream, wherein the time delay reference value and the Target Link
The round-trip delay of the network at place is positively correlated；
Judging submodule, for judging whether the susceptibility reference value is greater than predetermined susceptibility threshold；
First determines submodule, for it is quick that the target stream to be determined as time delay when the result of judging submodule, which is, is
Induced current.
Optionally, first computational submodule, comprising:
Obtaining unit obtains first for obtaining current time, and according to the current time and the deadline
Time difference；
Computing unit, for calculating the susceptibility reference value T according to the following formula:
Wherein,For the time delay reference value, c is that the first time is poor, and s is the data volume.
Optionally, the determining module 330, comprising:
Second computational submodule, for calculating the time difference of the deadline and current time, as the second time difference；
Second determines submodule, for according to the following formula, determining delay parameter d:
Wherein, TcFor the transmission time, D is second time difference.
Optionally, the adjustment module 340, comprising:
Second obtains submodule, for obtaining adjusting parameter P by following formula:
Wherein, d is the delay parameter, and e is natural constant；
Third computational submodule, for calculating the target subflow adjusted according to adjusting parameter P by following formula
Congestion window:
Wherein, wi+1For the congestion window of target subflow i adjusted, wiWork as target subflow i
Preceding congestion window；
Submodule is transmitted, for sending the target subflow i according to the calculated congestion window of institute.
Optionally, it is packaged in the handshake data packet SYN transmitted in the building process of the Target Link and belongs to time delay
The data packet of the subflow of sensitivity stream.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Each embodiment in this specification is all made of relevant mode and describes, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for device reality
For applying example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to embodiment of the method
Part explanation.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (8)
1. a kind of jamming control method, which is characterized in that be applied to transmitting terminal, which comprises
Judge whether target stream belonging to the target subflow on Target Link is delay sensitive stream, wherein the Target Link is
The link of congestion occurs, the target subflow is any of each subflow of Target Link transmission；
If it is, the acquisition transmission target subflow does not transmit data required transmission time under the first congestion window,
Wherein, first congestion window is the congestion window that presently described Target Link is directed to the target subflow；
Based on the transmission time, the delay parameter of the target subflow is determined, wherein the delay parameter is described for characterizing
The urgency level of target stream；
According to the delay parameter, the congestion window of the target subflow is adjusted；
The step of whether target stream belonging to the target subflow judged on Target Link is delay sensitive stream, comprising:
Obtain data volume and the deadline of target stream belonging to the target subflow on the Target Link, wherein the cut-off
Time are as follows: the time point that preset target stream is transmitted；
According to the time delay reference value of network where the data volume, the deadline and the Target Link, described in calculating
The susceptibility reference value of target stream, wherein the round-trip delay of the network where the time delay reference value and the Target Link is just
It is related；
Judge whether the susceptibility reference value is greater than predetermined susceptibility threshold；
When the judgment result is yes, the target stream is determined as delay sensitive stream.
2. the method according to claim 1, wherein it is described according to the data volume, the deadline and
The time delay reference value of network where the Target Link, the step of calculating the susceptibility reference value of the target stream, comprising:
Current time is obtained, and poor at the first time according to the current time and deadline acquisition；
The susceptibility reference value T is calculated according to the following formula:
Wherein,For the time delay reference value, c is that the first time is poor, and s is the data volume.
3. method according to claim 1 or 2, which is characterized in that it is described to be based on the transmission time, determine the target
The step of delay parameter of subflow, comprising:
The time difference for calculating the deadline and current time, as the second time difference；
According to the following formula, delay parameter d is determined:
Wherein, TcFor the transmission time, D is second time difference.
4. adjusting target the method according to claim 1, wherein described according to the delay parameter
The step of congestion window of stream includes:
Adjusting parameter P is obtained by following formula:
Wherein, d is the delay parameter, and e is natural constant；
By following formula, the congestion window of the target subflow adjusted is calculated according to adjusting parameter P:
Wherein, wi+1For the congestion window of target subflow i adjusted, wiCurrent for target subflow i
Congestion window；
According to the calculated congestion window of institute, the target subflow i is sent.
5. the method according to claim 1, wherein what is transmitted in the building process of the Target Link shakes hands
The data packet for belonging to the subflow of delay sensitive stream is packaged in data packet SYN.
6. a kind of congestion control device, which is characterized in that be applied to transmitting terminal, described device includes:
Judgment module, for judging whether target stream belonging to the target subflow on Target Link is delay sensitive stream, wherein institute
Stating Target Link is the link that congestion occurs, and the target subflow is any of each subflow of Target Link transmission；
Obtain module, if the output result for judgment module be it is yes, the data of not transmitting for obtaining the transmission target subflow exist
Required transmission time under first congestion window, wherein first congestion window is directed to institute for presently described Target Link
State the congestion window of target subflow；
Determining module determines the delay parameter of the target subflow for being based on the transmission time, wherein the time delay ginseng
Count the urgency level for characterizing the target stream；
Module is adjusted, for adjusting the congestion window of the target subflow according to the delay parameter；
The judgment module, comprising:
First obtains submodule, for obtaining the data volume and cut-off of target stream belonging to the target subflow on the Target Link
Time, wherein the deadline are as follows: the time point that preset target stream is transmitted；
First computational submodule, for according to network where the data volume, the deadline and the Target Link
Time delay reference value calculates the susceptibility reference value of the target stream, wherein where the time delay reference value and the Target Link
Network round-trip delay be positively correlated；
Judging submodule, for judging whether the susceptibility reference value is greater than predetermined susceptibility threshold；
First determines submodule, for when the result of judging submodule, which is, is, the target stream to be determined as delay sensitive stream.
7. device according to claim 6, which is characterized in that first computational submodule, comprising:
Obtaining unit obtains at the first time for obtaining current time, and according to the current time and the deadline
Difference；
Computing unit, for calculating the susceptibility reference value T according to the following formula:
Wherein,For the time delay reference value, c is that the first time is poor, and s is the data volume.
8. device according to claim 6 or 7, which is characterized in that the determining module, comprising:
Second computational submodule, for calculating the time difference of the deadline and current time, as the second time difference；
Second determines submodule, for according to the following formula, determining delay parameter d:
Wherein, TcFor the transmission time, D is second time difference.
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