CN103905328B - A kind of data transfer control system, method and relevant apparatus - Google Patents
A kind of data transfer control system, method and relevant apparatus Download PDFInfo
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- CN103905328B CN103905328B CN201210572735.2A CN201210572735A CN103905328B CN 103905328 B CN103905328 B CN 103905328B CN 201210572735 A CN201210572735 A CN 201210572735A CN 103905328 B CN103905328 B CN 103905328B
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Abstract
The invention discloses a kind of data transfer control system, method and relevant apparatus, to the message transmission rate in rationally control wireless network, and ensure the reliability of wireless network data transmission.The system includes：Sending ending equipment, for sending packet to sending ending equipment by least one go-between transmission equipment, wherein carrying current RTT information and congestion window adjustment information；And current congestion window is updated according to the congestion window adjustment information carried in the ack msg bag received；Each go-between transmission equipment, for after reception of the data packet, redefining congestion window adjustment information；If the congestion window adjustment information redefined out is less than the congestion window adjustment information carried in the congestion window adjustment information carried in packet, replacement data bag；Receiving device, sending ending equipment is returned to for reading the congestion window adjustment information in the packet received and writing in ack msg bag.
Description
Technical field
The present invention relates to wireless network transmissions control technology field, more particularly to a kind of data transfer control system, method
And relevant apparatus.
Background technology
Traditional transmission control protocol（Transmission Control Protocol, TCP）Use flow control mechanism
To sound out the network bandwidth, when detecting Network Packet Loss, then it is assumed that congestion occurs for network to reduce the transmission rate of transmitting terminal.
In WLAN（Wireless Local Area Network, WLAN）Wireless channel in, the higher bit error rate and terminal
Mobility can cause frequently transmission interrupt and packet loss, in this case, according to TCP flow amount controlling mechanism will be considered that network send out
Congestion is given birth to and has started congestion control mechanism to reduce the data transmission rate of transmitting terminal, transmission rate is contained in for a long time
On one lower grade, so that the remaining bandwidth of network can not be made full use of, the waste of Internet resources is caused.
In view of the above-mentioned problems, prior art proposes solution below, wireless router caching is sent to by server
The packet of terminal, when occurring the data packetloss of Radio Link, terminal sends repeat requests, wireless routing to wireless router
Device is received after repeat requests, retransmits the packet lost.The program is cached using wireless router and retransmits packet, with end
Hold to server requesting retransmission data bag and compare, reduce repeat requests bag and retransmit the time delay of packet, accelerate re-transmission
Speed.In addition, shielding repeat requests bag to server by intermediate router, it is to avoid server, which receives repeat requests bag, to be caused
Transmission rate reduction of speed.
But, in above-mentioned solution, the packet that terminal is sent to by server is cached by wireless router, it is desirable to
Wireless router has larger spatial cache, and this makes wireless router turn into the dangerous network element for occurring congestion, in addition to a large amount of
The management of packet has aggravated the processing load of wireless router, wireless router is turned into the bottleneck of network rate bottleneck
Network element, have impact on the reliability of wireless network.
The content of the invention
The embodiment of the present invention provides a kind of data transfer control system, method and relevant apparatus, wireless to rationally control
Message transmission rate in network, and ensure the reliability of wireless network data transmission.
The embodiment of the present invention provides a kind of data transfer control system, including sending ending equipment, receiving device and at least
One go-between transmission equipment, wherein,
The sending ending equipment, sets for passing sequentially through at least one described go-between transmission equipment to the transmitting terminal
Preparation, which is sent, carries current data packet transmission round-trip delay RTT information and congestion window adjustment letter in packet, the packet
Breath；And after the response ack msg bag that the receiving device is returned is received, carried according in the ack msg bag
Congestion window adjustment information update current congestion window；
Each go-between transmission equipment, for after the packet is received, being transmitted according to itself current data packet
The RTT information carried in the input rate information and available link bandwidth information of sequence and the packet redefines described
The corresponding congestion window adjustment information of packet；Taken if the congestion window adjustment information redefined out is less than in the packet
During the congestion window adjustment information of band, with gathering around for being carried in the congestion window adjustment information replacement packet redefined out
Fill in window adjustment information；
The receiving device, for after the packet is received, reading the congestion carried in the packet
Window adjustment information；And it is described by being returned in the ack msg bag of the congestion window adjustment information write-in packet of reading
Sending ending equipment.
The embodiment of the present invention provides a kind of data transfer control method, including：
Pass sequentially through at least one go-between transmission equipment and send packet to receiving device, take in the packet
Round-trip delay RTT information and the first congestion window adjustment information are transmitted with current data packet；
The response ack msg bag for the packet that receiving device is returned is received, the is carried in the ack msg bag
Two congestion window adjustment information, the second congestion window adjustment information is that at least one described go-between transmission equipment is connecing
Receive after the packet, the input rate information and available link bandwidth information of sequence are transmitted according to itself current data packet
And the RTT information carried in the packet redefines out and is sent to the receiving device；
Current congestion window is updated according to the second congestion window adjustment information.
The embodiment of the present invention provides a kind of data transfer controller, including：
Transmitting element, for passing sequentially through at least one go-between transmission equipment to receiving device transmission packet,
Current data packet transmission round-trip delay RTT information and the first congestion window adjustment information are carried in the packet；
Receiving unit, the response ack msg bag of the packet for receiving receiving device return, the ACK numbers
According to the second congestion window adjustment information is carried in bag, the second congestion window adjustment information is at least one described mid-level net
Network transmission equipment after the packet is received, according to itself current data packet transmit sequence input rate information and can
Redefined out with the RTT information carried in link bandwidth information and the packet and be sent to the receiving device
's；
Updating block, for updating current congestion window according to the second congestion window adjustment information.
The embodiment of the present invention provides another data transfer control method, including：
Current data packet transmission round-trip delay RTT information and congestion window are carried in received data packet, the packet
Adjustment information；
The input rate information and available link bandwidth information and the packet of sequence are transmitted according to current data packet
The RTT information of middle carrying redefines the corresponding congestion window adjustment information of the packet；
If the congestion window adjustment information redefined out is less than the congestion window adjustment information carried in the packet
When, the congestion window adjustment information carried in the packet is replaced with the congestion window adjustment information redefined out.
The embodiment of the present invention provides another data transmission device, including：
Receiving unit, for received data packet, carries current data packet transmission round-trip delay RTT letters in the packet
Breath and congestion window adjustment information；
Determining unit, for according to current data packet transmit sequence input rate information and available link bandwidth information with
And the RTT information carried in the packet redefines the corresponding congestion window adjustment information of the packet；
Updating block, if being less than the congestion carried in the packet for the congestion window adjustment information redefined out
During window adjustment information, the congestion window carried in the packet is replaced with the congestion window adjustment information redefined out and is adjusted
Whole information.
The embodiment of the present invention additionally provides a kind of data transfer control method, including：
Receiving end/sending end equipment passes sequentially through the packet of at least one go-between transmission equipment transmission, the packet
In carry the current congestion window adjustment information of the packet, the congestion window adjustment information is to be described at least one
Between web-transporting device after the packet is received, according to itself current data packet transmit sequence input rate information
Determined with the transmission round-trip delay RTT information carried in available link bandwidth information and the packet；
Read the congestion window adjustment information；
The congestion window adjustment information of reading is carried and returns to the hair in the response ack msg bag of the packet
Sending end equipment.
The embodiment of the present invention additionally provides a kind of data transfer controller, including：
Receiving unit, the data of at least one go-between transmission equipment transmission are passed sequentially through for receiving end/sending end equipment
The current congestion window adjustment information of the packet is carried in bag, the packet, the congestion window adjustment information is
At least one described go-between transmission equipment transmits sequence after the packet is received according to itself current data packet
Input rate information and available link bandwidth information and the packet in the transmission round-trip delay RTT information that carries determine
Go out；
Reading unit, for reading the congestion window adjustment information；
Transmitting element, for the congestion window adjustment information of reading to be carried to the response ack msg bag in the packet
In return to the sending ending equipment.
Data transmission system provided in an embodiment of the present invention, method and relevant apparatus, sending ending equipment are sending packet
When, current RTT information and congestion window adjustment information is carried in the packet, each go-between transmission equipment is received
To after the packet, congestion window is redefined according to the input rate that itself current ink bandwidth and packet transmit sequence
Adjustment information, however, it is determined that when the congestion window adjustment information gone out is less than the congestion window adjustment information carried in the packet, is used
The congestion window adjustment information redefined out replaces the congestion window adjustment information carried in the packet, when packet is final
When reaching receiving terminal, the congestion window adjustment information carried in packet is the minimum congestion determined in whole transmission path
The congestion window adjustment information carried in packet is carried and hair is returned in reply data bag by window adjustment information, receiving terminal
Sending end equipment, sending ending equipment updates the congestion that itself is current according to the congestion window adjustment information carried in reply data bag
Window.In said process, because congestion window adjustment information is determined according to the actual congestion state of go-between transmission equipment, from
And the congestion adjustment window information determined can reflect physical link situation, in such manner, it is possible to make full use of data transfer bandwidth
Resource, it is to avoid the waste of Internet resources so that Data Transmission Controlling is more reasonable, meanwhile, go-between transmission equipment need not
Cache the packet that sending ending equipment is sent, it is to avoid it turns into the bottleneck of network transmission, it is ensured that wireless network data is transmitted
Reliability.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages can be by the explanations write
Specifically noted structure is realized and obtained in book, claims and accompanying drawing.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the present invention, this hair
Bright schematic description and description is used to explain the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 be the embodiment of the present invention in, the structural representation of data transfer control system；
Fig. 2 be the embodiment of the present invention in, the implementation process diagram of transmitting terminal side data transfer control method；
Fig. 3 be the embodiment of the present invention in, the structural representation of transmitting terminal side data transmission control unit；
Fig. 4 is in the embodiment of the present invention, go-between transmission equipment implements the schematic flow sheet of data transfer control method；
Fig. 5 be the embodiment of the present invention in, the structural representation of go-between transmission equipment side data transmission control unit；
Fig. 6 is in the embodiment of the present invention, receiving device implements the schematic flow sheet of data transfer control method；
Fig. 7 be the embodiment of the present invention in, the structural representation of receiving device side data transmission control unit.
Embodiment
In order to realize the message transmission rate in rationally control infinite network, it is ensured that the reliability of infinite network data transfer
Purpose, the embodiments of the invention provide a kind of data transfer control system, method and relevant apparatus.
The preferred embodiments of the present invention are illustrated below in conjunction with Figure of description, it will be appreciated that described herein
Preferred embodiment is merely to illustrate and explain the present invention, and is not intended to limit the present invention, and in the case where not conflicting, this hair
The feature in embodiment and embodiment in bright can be mutually combined.
In order to rationally control wireless network data transmission rate, it is to avoid irrational reduction of speed.In the embodiment of the present invention, send
End equipment increases a new packet header when sending packet in the packet, for the ease of describing, in the embodiment of the present invention
The packet header newly increased is called stream control packet header.Stream control can be, but not limited to include three below field in packet header：Congestion window W,
Packet transmits RTT（Round-trip delay）With congestion window adjustment information dw, sending ending equipment is by increasing or reducing congestion window
Mouthful W adjusts the transmission rate of packet, and as shown in table 1, it is a kind of stream control possible data structure in packet header：
| W | RTT | dW |
Wherein, field W and RTT are determined by sending ending equipment, and W is set to gather around by sending ending equipment when sending packet
Window currency is filled in, RTT is set to the round-trip delay of sending ending equipment estimation, and W and RTT keep constant, dw on the transmit path
For the adjusted value of congestion window, during initial transmission packet, sending ending equipment can set dw value to be 0, in packet transmission
During by each go-between transmission equipment rewrite.It is preferred that go-between transmission equipment compares data transfer where packet
The input rate of sequence and itself currently available link bandwidth, if input rate is more than currently available link bandwidth, illustrate this
Go-between transmission equipment excess load, should notify sending ending equipment to reduce the transmission rate of packet, if input rate
Less than currently available link bandwidth, illustrate that go-between transmission equipment also has remaining bandwidth, sending ending equipment should be notified to improve number
According to packet sending speed.When it is implemented, go-between transmission equipment can be according to the input of data transmission sequence where packet
The RTT values carried in speed and itself currently available link bandwidth and packet are adjusted to dw, and each go-between is passed
Transfer device is to redefine dw after reception of the data packet, however, it is determined that when the dw gone out is less than the dw carried in packet, will
Dw in replacement data bag, so, when packet is transferred to receiving device, wherein the dw values carried will be a transmission road
Minimum value on footpath（The go-between transmission equipment write-in of most congestion as in transmission path）, receiving device will receive
Packet in the dw values that carry carry and return to sending ending equipment in the ack msg bag of the packet, so, transmitting terminal is set
It is standby its data packet sending speed to be adjusted according to the dw values carried in ACk packets（Realized by adjusting congestion window）,
In said process, determined due to dw values for each go-between transmission equipment according to the actual load state of itself, Neng Gouzhun
Really reflect the congestion situation of each go-between transmission equipment, so that so that control of the sending ending equipment to data package transmission velocity
It is more reasonable.
Based on above-mentioned analysis, the embodiment of the present invention provides a kind of data transfer control system, as shown in figure 1, it is this hair
The structural representation for the data transfer control system that bright embodiment is provided, including：Sending ending equipment 101, the and of receiving device 102
At least one go-between transmission equipment 103, wherein：
Sending ending equipment 101, for passing sequentially through at least one go-between transmission equipment 103 to receiving device 102
Send packet；And in the ACK for receiving the return of the equipment of receiving terminal 102（Response）After packet, according in ack msg bag
The congestion window adjustment information of carrying updates current congestion window；
Wherein, current data packet transmission round-trip delay RTT information and congestion window adjustment information are carried in packet；Tool
When body is implemented, sending ending equipment 101 is before packet is sent, first by congestion window value and the current RTT values of itself estimation
Write in w and RTT fields.
Each go-between transmission equipment 103, for after reception of the data packet, sequence being transmitted according to itself current data packet
It is corresponding that the input rate information of row redefines packet with the RTT information carried in available link bandwidth information and packet
Congestion window adjustment information；Adjusted if the congestion window adjustment information redefined out is less than the congestion window carried in packet
During whole information, with the congestion window adjustment information carried in the congestion window adjustment information replacement data bag redefined out；
When it is implemented, each go-between transmission equipment on the transmit path, when it receives packet, according to
The input rate and available link bandwidth of RTT and the data transmission sequence of itself determine dw values, are carried if less than in packet
Dw field values, then the dw values carried in the dw value replacement data bags determined with itself.
Receiving device 102, the congestion window for after reception of the data packet, being carried in read data packet adjusts letter
Breath；And the congestion window adjustment information of reading is write in the ack msg bag of the packet return to sending ending equipment 101.
When it is implemented, sending ending equipment 101 is after the ack msg bag of the return of receiving device 102 is received, can be with
Packet is sent according to below equation amendment congestion window, and with new congestion window：MAX (P, W+dw), wherein, MAX is represented
Maxima operation is taken, P is the length of current data to be transmitted bag（Can be specifically the length of the packet in units of byte）,
W is the congestion window before updating.
It is preferred that the corresponding congestion window adjustment information of the packet can be redefined according to below equation：dw=
(r-ri)*RTT；Wherein：Dw is the corresponding congestion window adjustment information of the packet determined again；R passes for go-between
The currently available link bandwidth of transfer device 103；riThe input speed of sequence is transmitted for the current data packet of go-between transmission equipment 103
Rate；RTT is that current data packet transmits RTT.
More preferably, because the modification of congestion window needs just feed back to sending ending equipment 101 by a RTT duration,
Therefore, in practical application, congestion window amendment lags behind the state of router, in addition, packet is in data transmission queue
Queue up and also increase the risk of congestion generation, in order to avoid go-between transmission equipment because overload causes congestion, the present invention is implemented
, can be by redefining the corresponding congestion window adjustment information of the packet according to below equation in example：Dw=(r-ri)*
RTT-L, L are the length that packet where packet transmits sequence.So, the remaining bandwidth of go-between transmission equipment 103 is stayed
There is surplus, the consumption of its data transmission sequence queuing, the probability that reduction congestion occurs can be compensated.
When it is implemented, when only existing data bag transmission sequence on middle web-transporting device 103, therefore, if
It is less than the dw values carried in packet, and go-between transmission equipment 103 only needs to the value write-in stream control bag for the dw that will be determined
Head.
But actual conditions on a go-between transmission equipment 103 on the contrary, may be simultaneously present multiple packets
Sequence is transmitted, if there is multiple packet transmission sequences on go-between transmission equipment 103, it is preferred that can not limit singly
According to the corresponding QoS of each packet transmission sequence（Service quality）Grade distributes true between each packet transmission sequence
The dw values made.
If the corresponding QoS grades of each packet transmission sequence are different, go-between transmission equipment 103 can according to
Lower step determines the corresponding dw values of packet received：
Step 1, for each packet transmit sequence, according to the packet transmit the corresponding QoS class informations of sequence and
Bandwidth requirement information is defined as the bandwidth that packet transmission sequence is distributed；
When it is implemented, go-between transmission equipment 103 can be transmitted according to each packet the corresponding QoS grades of sequence and
Bandwidth demand determines the bandwidth allocation ratio between each packet transmission sequence, to exist on go-between transmission equipment 103
Illustrated exemplified by three data bags transmission sequence, it is assumed that go-between transmission equipment 103 transmits sequence pair according to each packet
The bandwidth allocation ratio that the QoS grades and bandwidth demand answered are determined is X: Y: Z, and current intermediate network equipment 103 is received
Packet where packet transmission sequence pair answer weights Z, then the band of packet transmission sequence distribution where the packet
A width of current available bandwidth
The bandwidth that step 2, the packet transmission sequence that is defined as are distributed accounts for the ratio of current available bandwidth；
Continuation of the previous cases, the bandwidth for transmitting sequence distribution for the packet accounts for the ratio of current available bandwidth and is
Step 3, determine according to below equation the corresponding congestion window adjustment information of packet transmission sequence：
Wherein：dwjFor the corresponding congestion window adjustment information of j-th strip packet transmission sequence；R is that go-between transmission is set
Standby 103 currently available link bandwidths；riaThe input speed of all packets transmission sequence included for go-between transmission equipment 103
Rate sum；Packet transmits RTT average in each packet transmission sequence included for go-between transmission equipment；tjFor
Go-between transmission equipment is that the bandwidth of j-th strip packet transmission sequence distribution accounts for the ratio of current available bandwidth, according to upper example,
Then
Step 4, determine packet where the corresponding congestion window adjustment information of data transmission sequence be the packet pair
The congestion window adjustment information answered.
The dw determinedjAs corresponding dw values of the packet, if less than the value of field dw in packet, word will be write
Section dw replaces original dw values.
Equally, in order to avoid lagging behind the state of go-between transmission equipment 103 due to congestion serial ports amendment and cause can
The congestion risk that can exist, it is preferred that in the embodiment of the present invention, go-between transmission equipment 103 can be true according to below equation
The fixed packet transmits the corresponding congestion window adjustment information of sequenceLjFor j-th strip data
The length of bag transmission sequence.
If the corresponding QoS grades of each packet transmission sequence are identical（As all tried one's best（best-
effort））, then by the dw values that mean allocation is determined between each packet transmits sequence of go-between transmission equipment 103.
When it is implemented, if it is determined that dw value for just（More than 0）, illustrate that go-between transmission equipment 103 also has
Remaining bandwidth, sending ending equipment 101 will increase congestion window so as to improve data package transmission velocity, if it is determined that the dw gone out value
It is negative（More than 0）, illustrate the excess load of go-between transmission equipment 103, sending ending equipment 101 is by congestion window is reduced to reduce
Data package transmission velocity.From said process, in the time by one to two RTT, the packet hair of sending ending equipment 101
Transmission rate will can approach the saturation state of link.
Especially, if when it is implemented, sending ending equipment 101 sends packet time-out（I.e. within the time of setting not
Receive the ack msg bag of the return of receiving device 102）Or continuously receive at least two repeat ACK packets, then it is assumed that
The data-bag lost or generation congestion sent before.Specifically, being directed in both the above situation, the embodiment of the present invention, respectively
It can be handled in accordance with the following methods：
First, sending ending equipment 101 receives corresponding at least two weight of packet before the arrival of default time-out time
Multiple ack msg bag
Such case, sending ending equipment 101 thinks the data-bag lost, reads the ack msg bag that last time is received
The congestion window adjustment information of middle carrying（So that sending ending equipment 101 receives 3 repeat ACK packets as an example, then the 3rd is read
The dw values carried in individual packet）；If the congestion window adjustment information read is less than zero, updating current congestion window isAfterwards, the packet is retransmitted；If the congestion window adjustment information read is more than zero, current congestion window is updated
Mouthful be (W+dw) after, retransmit the packet；Wherein, MIN represents to take minimum Value Operations.
2nd, sending ending equipment 101 reaches in default time-out time and does not receive the corresponding ack msg bag of packet
In this case, sending ending equipment 101 thinks the data-bag lost sent before, and sending ending equipment 101, which updates, works as
Preceding congestion window be preset value after, retransmit the packet, wherein, preset value be less than update before congestion window.Due to ACK numbers
Overtime duration is lagged behind according to bag to reach, illustrates that ack msg bag is all dropped in midway, and this explanation current link conditions is disliked very much
Bad, sending ending equipment can say that congestion window is set to preset value, for example, can singly be not limited to be set to 1 packet and retransmit
The packet.
It should be noted that the sending ending equipment being related in the embodiment of the present invention can be, but not limited to for mobile terminal, connect
Receiving end equipment can be, but not limited to as server, and go-between transmission equipment can be, but not limited to as intervention control device, route
The web-transporting devices such as device equipment.
Data transfer control method provided in an embodiment of the present invention, can be according to positive and negative effective differentiation congestion packet loss of dw values
And packet lost by corruption（Link State is poor to be caused）If dw values is just, illustrate that go-between transmission equipment also has remaining bandwidth, by mistake
The possibility of code packet loss is bigger, therefore, it is desirable to retransmit the packet lost, while data package transmission velocity can be increased, and nothing
Data package transmission velocity need to be reduced；If dw values are negative, illustrate that go-between transmission equipment load is larger, its capacity is close full
With the possibility of congestion packet loss is bigger, at this time, it may be necessary to retransmit packet, while reducing data package transmission velocity.
Based on same inventive concept, data transfer control method and data transfer are further correspondingly provided in the embodiment of the present invention
Control device, because the principle of the above method and device solution problem is similar to data transfer control system, therefore the above method
And the implementation of device may refer to the implementation of system, repeat part and repeat no more.
As shown in Fig. 2 it is the implementation process diagram of transmitting terminal side data transfer control method, following step can be included
Suddenly：
S201, pass sequentially through at least one go-between transmission equipment to receiving device send packet；
Wherein, current data packet transmission round-trip delay RTT information and the adjustment of the first congestion window are carried in the packet
Information；
S202, the ack msg bag for receiving the packet that receiving device is returned, the is carried in the ack msg bag
Two congestion window adjustment information；
Wherein, the second congestion window adjustment information be at least one go-between transmission equipment receive packet it
Afterwards, carried in input rate information and available link bandwidth information and packet that sequence is transmitted according to itself current data packet
RTT information redefine out and be sent to the receiving device；
S203, according to the second congestion window adjustment information update current congestion window.
Wherein, in step 203, current congestion window can be updated in accordance with the following methods：Renewal current congestion window is MAX
(P, W+dw), wherein：MAX represents to take maxima operation；P is the length of current data to be transmitted bag；W is the congestion window before updating
Mouthful；Dw is the second congestion window adjustment information.
When it is implemented, the above method, can also comprise the following steps：
Step 1, default time-out time arrival before receive the corresponding at least two repeat ACKs number of the packet
During according to bag, the congestion window adjustment information carried in the ack msg bag that last time is received is read；
If step 2, the congestion window adjustment information read are less than zero, update current congestion window and be
Afterwards, the packet is retransmitted, wherein, MIN represents to take minimum Value Operations；If the congestion window adjustment information read is more than zero,
Current congestion window is updated after (W+dw), to retransmit the packet.
When it is implemented, the above method may also include：Reached in default time-out time and do not receive the packet
During corresponding ack msg bag, current congestion window is updated after preset value, to retransmit the packet, the preset value is less than
Congestion window before renewal.
Correspondingly, the embodiment of the present invention provides a kind of data transfer controller of transmission side, as shown in figure 3, including：
Transmitting element 301, for passing sequentially through at least one go-between transmission equipment to receiving device transmission data
Current data packet transmission round-trip delay RTT information and the first congestion window adjustment information are carried in bag, the packet；
Receiving unit 302, the response ack msg bag of the packet for receiving receiving device return, the ACK
The second congestion window adjustment information is carried in packet, the second congestion window adjustment information is for described in the middle of at least one
Web-transporting device after the packet is received, according to itself current data packet transmit sequence input rate information and
The RTT information carried in available link bandwidth information and the packet redefines out and is sent to the receiving device
's；
Updating block 303, for updating current congestion window according to the second congestion window adjustment information.
Wherein, updating block 303, can be used for updating current congestion window according to below equation：MAX (P, W+dw), its
In：MAX represents to take maxima operation；P is the length of current data to be transmitted bag；W is the congestion window before updating；Dw is second
Congestion window adjustment information.
Specific implementation is that said apparatus can also include reading unit, wherein：
Reading unit, for receiving corresponding at least two weight of the packet before the arrival of default time-out time
During multiple ack msg bag, the congestion window adjustment information carried in the ack msg bag that last time is received is read；
Updating block 303, if the congestion window adjustment information for being additionally operable to read is less than zero, updating current congestion window isIf the congestion window adjustment information read is more than zero, it is (W+dw) to update current congestion window；
Transmitting element 301, be additionally operable to updating block 303 update current congestion window beAfterwards,
Or update current congestion window after (W+dw), to retransmit the packet.
When it is implemented, updating block 303, can be also used for reaching in default time-out time and does not receive the number
During according to wrapping corresponding ack msg bag, renewal current congestion window is preset value, and the preset value is less than the congestion window before updating
Mouthful；Transmitting element 301, is additionally operable to after updating block 303 updates current congestion window for preset value, retransmits the data
Bag.
As shown in figure 4, it is the schematic flow sheet that go-between transmission equipment implements data transfer control method, it can wrap
Include following steps：
Current data packet transmission RTT information and congestion window adjustment letter are carried in S401, received data packet, the packet
Breath；
S402, input rate information and available link bandwidth information and the number according to current data packet transmission sequence
The corresponding congestion window adjustment information of the packet is redefined according to the RTT information carried in bag；
If S403, the congestion window adjustment information redefined out are less than the congestion window adjustment carried in the packet
During information, the congestion window adjustment information carried in the packet is replaced with the congestion window adjustment information redefined out.
When it is implemented, the above method can also comprise the following steps：
The packet is sent to receiving device, the congestion window that receiving device will be carried in the packet is indicated
Mouth adjustment information is carried returns to sending ending equipment in the ack msg bag of the packet.
Specific implementation is, in step S402, can redefine the corresponding congestion window of packet according to following any formula
Mouth adjustment information：dw=(r-ri) * RTT or dw=(r-ri) * RTT-L, wherein, dw is the packet pair determined again
The congestion window adjustment information answered；R is the currently available link bandwidth of go-between transmission equipment；riFor the go-between
Transmission equipment current data packet transmits the input rate of sequence；RTT is that current data packet transmits RTT；L is packet place
Packet transmits the length of sequence.
Especially, can be according to following steps in step S402 if currently transmit sequence comprising at least two data bags
It is determined that the corresponding congestion window adjustment information of the packet received：
Step 1, for each packet transmit sequence, according to the packet transmit the corresponding QoS class informations of sequence and
Bandwidth requirement information is defined as the bandwidth that packet transmission sequence is distributed；
The bandwidth that step 2, the packet transmission sequence that is defined as are distributed accounts for the ratio of current available bandwidth；
Step 3, determine according to following any formula the corresponding congestion window adjustment information of packet transmission sequence：Or
Wherein：dwjFor the corresponding congestion window adjustment information of j-th strip packet transmission sequence；R passes for the go-between
The currently available link bandwidth of transfer device；riaThe input of sequence is transmitted for all packets that the go-between transmission equipment is included
Speed sum；Packet transmission RTT's is equal in each packet transmission sequence included for the go-between transmission equipment
Value；LjThe length of sequence is transmitted for j-th strip packet；tjIt is j-th strip packet transmission sequence for the go-between transmission equipment
The bandwidth of distribution accounts for the ratio of current available bandwidth.
Step 4, determine the packet where the corresponding congestion window adjustment information of data transmission sequence be the number
According to the corresponding congestion window adjustment information of bag.
Correspondingly, the embodiment of the present invention provides a kind of go-between transmission equipment side data transmission control unit, such as Fig. 5 institutes
Show, including：
Receiving unit 501, for received data packet, carries current data packet transmission round-trip delay in the packet
RTT information and congestion window adjustment information；
Determining unit 502, input rate information and available link bandwidth for transmitting sequence according to current data packet are believed
The RTT information carried in breath and the packet redefines the corresponding congestion window adjustment information of the packet；
Updating block 503, if being less than what is carried in the packet for the congestion window adjustment information redefined out
During congestion window adjustment information, the congestion window carried in the packet is replaced with the congestion window adjustment information redefined out
Mouth adjustment information.
When it is implemented, said apparatus, can also include：
Transmitting element, for the packet to be sent into receiving device, indicates the receiving device by the number
Transmitting terminal is returned to according to the congestion window adjustment information carrying carried in bag in the response ack msg bag of the packet to set
It is standby.
When it is implemented, determining unit 502 can be used for redefining according to below equation, the packet is corresponding to be gathered around
Fill in window adjustment information：Dw=(r-ri)*RTT；Or redefine the corresponding congestion window of the packet according to below equation
Mouth adjustment information：Dw=(r-ri) * RTT-L, wherein：Dw is the corresponding congestion window adjustment of the packet determined again
Information；R is the currently available link bandwidth of go-between transmission equipment；riFor the go-between transmission equipment current data
The input rate of bag transmission sequence；RTT is that current data packet transmits RTT；L is packet transmission sequence where the packet
Length.
When it is implemented, determining unit 502, can include：
First determination subelement, if for comprising at least two data bags transmit sequence when, for each packet transmit
Sequence, transmits the corresponding service quality QoS class information of sequence according to the packet and bandwidth requirement information is defined as the data
The bandwidth that bag transmission sequence is distributed；
Second determination subelement, the ratio of current available bandwidth is accounted for for being defined as the bandwidth of packet transmission sequence distribution
Example；
3rd determination subelement, is used for and determines that the corresponding congestion window of packet transmission sequence is adjusted according to below equation
Whole information：Or the corresponding congestion window of packet transmission sequence is determined according to below equation
Mouth adjustment informationWherein dwjFor the corresponding congestion window of j-th strip packet transmission sequence
Adjustment information；R is the currently available link bandwidth of go-between transmission equipment；riaIncluded for the go-between transmission equipment
All packets transmit sequence input rate sum；Passed for each packet that the go-between transmission equipment is included
Packet transmits RTT average in defeated sequence；LjThe length of sequence is transmitted for j-th strip packet；tjTransmitted for the go-between
Equipment is that the bandwidth of j-th strip packet transmission sequence distribution accounts for the ratio of current available bandwidth；
4th determination subelement, the corresponding congestion window adjustment of data transmission sequence where for determining the packet
Information is the corresponding congestion window adjustment information of the packet.
As shown in fig. 6, showing for the flow that receiving device provided in an embodiment of the present invention implements data transfer control method
It is intended to, comprises the following steps：
S601, receiving end/sending end equipment pass sequentially through the packet of at least one go-between transmission equipment transmission；
Wherein, the current congestion window adjustment information of the packet, the congestion window are carried in the packet received
Mouthful adjustment information be at least one go-between transmission equipment after the packet is received, according to itself current data packet
What the RTT information carried in the input rate information and available link bandwidth information and the packet of transmitting sequence was determined；
Wherein, each intermediate equipment can transmit the input of sequence after the packet is received according to itself current packet
The RTT information carried in rate information and available link bandwidth information and the packet redefines congestion window adjustment letter
Breath, if it is less than the congestion window adjustment information carried in the packet, with the congestion window adjustment information redefined out
Replace the congestion window adjustment information carried in the packet.
S602, read the congestion window adjustment information carried in the packet；
S603, the congestion window adjustment information of reading is carried return to transmitting terminal in the ack msg bag of the packet
Equipment.
As shown in fig. 7, being the structural representation of receiving device side data transmission control unit provided in an embodiment of the present invention
Figure, including：
Receiving unit 701, the transmission of at least one go-between transmission equipment is passed sequentially through for receiving end/sending end equipment
Packet；
Wherein, the current congestion window adjustment information of the packet, congestion window adjustment letter are carried in the packet
It is at least one go-between transmission equipment after the packet is received to cease, and sequence is transmitted according to itself current data packet
Input rate information and available link bandwidth information and the packet in the RTT information that carries determine；
Reading unit 702, for reading the congestion window adjustment information；
Transmitting element 703, the congestion window adjustment information for reading unit 702 to be read is carried in the packet
Sending ending equipment is returned in ack msg bag.
Data transmission system provided in an embodiment of the present invention, method and relevant apparatus, sending ending equipment are sending packet
When, current RTT information and congestion window adjustment information is carried in the packet, each go-between transmission equipment is received
To after the packet, congestion window is redefined according to the input rate that itself current ink bandwidth and packet transmit sequence
Adjustment information, however, it is determined that when the congestion window adjustment information gone out is less than the congestion window adjustment information carried in the packet, is used
The congestion window adjustment information redefined out replaces the congestion window adjustment information carried in the packet, when packet is final
When reaching receiving terminal, the congestion window adjustment information carried in packet is the minimum congestion determined in whole transmission path
The congestion window adjustment information carried in packet is carried and hair is returned in reply data bag by window adjustment information, receiving terminal
Sending end equipment, sending ending equipment updates the congestion that itself is current according to the congestion window adjustment information carried in reply data bag
Window.In said process, because congestion window adjustment information is determined according to the actual congestion state of go-between transmission equipment, from
And the congestion adjustment window information determined can reflect physical link situation, in such manner, it is possible to make full use of data transfer bandwidth
Resource, it is to avoid the waste of Internet resources so that Data Transmission Controlling is more reasonable, meanwhile, go-between transmission equipment need not
Cache the packet that sending ending equipment is sent, it is to avoid it turns into the bottleneck of network transmission, it is ensured that wireless network data is transmitted
Reliability.
It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or computer program
Product.Therefore, the present invention can be using the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.Moreover, the present invention can be used in one or more computers for wherein including computer usable program code
Usable storage medium（Including but not limited to magnetic disk storage, CD-ROM, optical memory etc.）The computer program production of upper implementation
The form of product.
The present invention is with reference to method according to embodiments of the present invention, equipment（System）And the flow of computer program product
Figure and/or block diagram are described.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram
Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which is produced, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that in meter
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (18)
1. a kind of data transfer control system, including sending ending equipment, receiving device and the transmission of at least one go-between are set
It is standby, it is characterised in that
The sending ending equipment, sends out for passing sequentially through at least one described go-between transmission equipment to the receiving device
Send and current data packet transmission round-trip delay RTT information and congestion window adjustment information are carried in packet, the packet；With
And after the response ack msg bag that the receiving device is returned is received, according to the congestion carried in the ack msg bag
Window adjustment information updates current congestion window；
Each go-between transmission equipment, for after the packet is received, sequence to be transmitted according to itself current data packet
Input rate information and available link bandwidth information and the packet in the RTT information that carries redefine the data
Wrap corresponding congestion window adjustment information；If the congestion window adjustment information redefined out is less than what is carried in the packet
During congestion window adjustment information, the congestion window carried in the packet is replaced with the congestion window adjustment information redefined out
Mouth adjustment information；Each go-between transmission equipment, specifically for redefining the packet correspondence according to below equation
Congestion window adjustment information：Dw=(r-ri)*RTT；Or specifically for redefining the packet according to below equation
Corresponding congestion window adjustment information：Dw=(r-ri) * RTT-L, wherein：Dw is that the packet determined again is corresponding
Congestion window adjustment information；R is the currently available link bandwidth of go-between transmission equipment；riTransmitted for the go-between
Equipment current data packet transmits the input rate of sequence；RTT is that current data packet transmits RTT；L is data where the packet
The length of bag transmission sequence；
The receiving device, for after the packet is received, reading the congestion window carried in the packet
Adjustment information；And the transmission will be returned in the ack msg bag of the congestion window adjustment information write-in packet of reading
End equipment；
The sending ending equipment, is MAX (P, W+dw) specifically for updating current congestion window, wherein, MAX represents to take maximum
Operation, P is the length of current data to be transmitted bag, and W is the congestion window before updating.
2. the system as claimed in claim 1, it is characterised in that
Each go-between transmission equipment, if transmit sequence comprising at least two data bags specifically for itself, according to lower section
Method determines the corresponding congestion window adjustment information of the packet：
Sequence is transmitted for each packet, the corresponding service quality QoS class information of sequence and band are transmitted according to the packet
Wide demand information is defined as the bandwidth that packet transmission sequence is distributed；It is defined as the bandwidth of packet transmission sequence distribution
Account for the ratio of current available bandwidth；And determine that the corresponding congestion window adjustment of packet transmission sequence is believed according to below equation
Breath：Or determine that the corresponding congestion window of packet transmission sequence is adjusted according to below equation
Whole informationThe corresponding congestion window of data transmission sequence where determining the packet
Adjustment information is the corresponding congestion window adjustment information of the packet, wherein：
dwjFor the corresponding congestion window adjustment information of j-th strip packet transmission sequence；
R is the currently available link bandwidth of go-between transmission equipment；
riaThe input rate sum of sequence is transmitted for all packets that the go-between transmission equipment is included；
Packet transmits RTT average in each packet transmission sequence included for the go-between transmission equipment；
LjThe length of sequence is transmitted for j-th strip packet；
tjThe ratio of current available bandwidth is accounted for for the bandwidth that the go-between transmission equipment is the transmission sequence distribution of j-th strip packet
Example.
3. the system as claimed in claim 1, it is characterised in that
The sending ending equipment, is additionally operable to receive the packet corresponding at least two before default time-out time is reached
During individual repeat ACK packet, the congestion window adjustment information carried in the ack msg bag that last time is received is read；If reading
The congestion window adjustment information taken is less than zero, updates current congestion window and isAfterwards, the data are retransmitted
Bag；If the congestion window adjustment information read is more than zero, update current congestion window after (W+dw), to retransmit the data
Bag；Wherein, MIN represents to take minimum Value Operations.
4. the system as claimed in claim 1, it is characterised in that
The sending ending equipment, is additionally operable to reach in default time-out time and does not receive the corresponding ACK numbers of the packet
During according to bag, current congestion window is updated after preset value, to retransmit the packet, the preset value is less than the congestion before updating
Window.
5. a kind of data transfer control method, it is characterised in that including：
Pass sequentially through at least one go-between transmission equipment and send packet to receiving device, carry in the packet
Current data packet transmits round-trip delay RTT information and the first congestion window adjustment information；
Second is carried in the response ack msg bag for the packet that reception receiving device is returned, the ack msg bag to gather around
Window adjustment information is filled in, the second congestion window adjustment information is that at least one described go-between transmission equipment is being received
After the packet, according to itself current data packet transmit sequence input rate information and available link bandwidth information and
The RTT information carried in the packet redefines out and is sent to the receiving device；Wherein, second congestion
The window adjustment information go-between transmission equipment is specifically redefined according to below equation：Dw=(r-ri)*RTT；
Or the second congestion window adjustment information go-between transmission equipment is specifically redefined according to below equation：
Dw=(r-ri) * RTT-L, wherein：Dw is the second congestion window adjustment information；R is that the go-between transmission equipment currently may be used
Use link bandwidth；riThe input rate of sequence is transmitted for the go-between transmission equipment current data packet；RTT is current data
Bag transmission RTT；L is the length that packet where the packet transmits sequence；
It is MAX (P, W+dw) to update current congestion window according to the second congestion window adjustment information, wherein：MAX represents to take
Maxima operation；P is the length of current data to be transmitted bag；W is the congestion window before updating.
6. method as claimed in claim 5, it is characterised in that also include：
When receiving the corresponding at least two repeat ACKs packet of the packet before the arrival of default time-out time, read
Take the congestion window adjustment information carried in the ack msg bag received for the last time；
If the congestion window adjustment information read is less than zero, updating current congestion window isAfterwards, retransmit
The packet, wherein, MIN represents to take minimum Value Operations；
If the congestion window adjustment information read is more than zero, update current congestion window after (W+dw), to retransmit the data
Bag.
7. method as claimed in claim 5, it is characterised in that also include：
When default time-out time is reached and does not receive the corresponding ack msg bag of the packet, current congestion window is updated
Mouth is after preset value, retransmits the packet, and the preset value is less than the congestion window before updating.
8. a kind of data transfer controller, it is characterised in that including：
Transmitting element, it is described for passing sequentially through at least one go-between transmission equipment to receiving device transmission packet
Current data packet transmission round-trip delay RTT information and the first congestion window adjustment information are carried in packet；
Receiving unit, the response ack msg bag of the packet for receiving receiving device return, the ack msg bag
In carry the second congestion window adjustment information, the second congestion window adjustment information is that at least one described go-between is passed
Transfer device transmits the input rate information and available chain of sequence according to itself current data packet after the packet is received
The RTT information carried in road bandwidth information and the packet redefines out and is sent to the receiving device；Its
In, the second congestion window adjustment information go-between transmission equipment is specifically redefined according to below equation：
Dw=(r-ri)*RTT；Or the second congestion window adjustment information is that the go-between transmission equipment is specific according to following
What formula was redefined：Dw=(r-ri) * RTT-L, wherein：Dw is the second congestion window adjustment information；R is the go-between
The currently available link bandwidth of transmission equipment；riThe input speed of sequence is transmitted for the go-between transmission equipment current data packet
Rate；RTT is that current data packet transmits RTT；L is the length that packet where the packet transmits sequence；
Updating block, is MAX (P, W+dw) for updating current congestion window according to the second congestion window adjustment information, its
In：MAX represents to take maxima operation；P is the length of current data to be transmitted bag；W is the congestion window before updating.
9. device as claimed in claim 8, it is characterised in that also including reading unit, wherein：
The reading unit, for receiving corresponding at least two weight of the packet before the arrival of default time-out time
During multiple ack msg bag, the congestion window adjustment information carried in the ack msg bag that last time is received is read；
The updating block, if the congestion window adjustment information for being additionally operable to read is less than zero, updating current congestion window isIf the congestion window adjustment information read is more than zero, it is (W+dw) to update current congestion window；
The transmitting element, be additionally operable to the updating block update current congestion window beAfterwards, or
Person updates current congestion window after (W+dw), to retransmit the packet.
10. device as claimed in claim 8, it is characterised in that
The updating block, is additionally operable to reach in default time-out time and does not receive the corresponding ack msg of the packet
Bao Shi, renewal current congestion window is preset value, and the preset value is less than the congestion window before updating；
The transmitting element, is additionally operable to after the updating block updates current congestion window for preset value, retransmits the number
According to bag.
11. a kind of data transfer control method for go-between transmission equipment, it is characterised in that including：
Current data packet transmission round-trip delay RTT information and congestion window adjustment are carried in received data packet, the packet
Information；
Taken in input rate information and available link bandwidth information and the packet that sequence is transmitted according to current data packet
The RTT information of band redefines the corresponding congestion window adjustment information of the packet；Specifically redefined according to below equation
The corresponding congestion window adjustment information of the packet：Dw=(r-ri)*RTT；Or redefined according to below equation described
The corresponding congestion window adjustment information of packet：Dw=(r-ri) * RTT-L, wherein：Dw is the packet determined again
Corresponding congestion window adjustment information；R is the currently available link bandwidth of go-between transmission equipment；riFor the mid-level net
Network transmission equipment current data packet transmits the input rate of sequence；RTT is that current data packet transmits RTT；L is the packet institute
The length of sequence is transmitted in packet；
If the congestion window adjustment information redefined out is less than the congestion window adjustment information carried in the packet, use
The congestion window adjustment information redefined out replaces the congestion window adjustment information carried in the packet.
12. the method as described in claim requirement 11, it is characterised in that also include：
The packet is sent to receiving device, the congestion window that the receiving device will be carried in the packet is indicated
Mouth adjustment information is carried returns to sending ending equipment in the response ack msg bag of the packet.
13. method as claimed in claim 11, it is characterised in that if transmit sequence comprising at least two data bags, according to
The RTT letters carried in the input rate information and available link bandwidth information and the packet of current data packet transmission sequence
Breath redefines the corresponding congestion window adjustment information of the packet, specifically includes：
Sequence is transmitted for each packet, the corresponding service quality QoS class information of sequence and band are transmitted according to the packet
Wide demand information is defined as the bandwidth that packet transmission sequence is distributed；
The bandwidth for being defined as packet transmission sequence distribution accounts for the ratio of current available bandwidth；
And the corresponding congestion window adjustment information of packet transmission sequence is determined according to below equation：Or determine that the corresponding congestion window adjustment of packet transmission sequence is believed according to below equation
Breath
The corresponding congestion window adjustment information of data transmission sequence where determining the packet is corresponding for the packet
Congestion window adjustment information；
Wherein：
dwjFor the corresponding congestion window adjustment information of j-th strip packet transmission sequence；
R is the currently available link bandwidth of go-between transmission equipment；
riaThe input rate sum of sequence is transmitted for all packets that the go-between transmission equipment is included；
Packet transmits RTT average in each packet transmission sequence included for the go-between transmission equipment；
LjThe length of sequence is transmitted for j-th strip packet；
tjThe ratio of current available bandwidth is accounted for for the bandwidth that the go-between transmission equipment is the transmission sequence distribution of j-th strip packet
Example.
14. a kind of data transfer controller for go-between transmission equipment, it is characterised in that including：
Receiving unit, for received data packet, carried in the packet current data packet transmission round-trip delay RTT information and
Congestion window adjustment information；
Determining unit, input rate information and available link bandwidth information and institute for transmitting sequence according to current data packet
State the RTT information carried in packet and redefine the corresponding congestion window adjustment information of the packet；Specifically according to following
Formula redefines the corresponding congestion window adjustment information of the packet：Dw=(r-ri)*RTT；Or according to below equation
Redefine the corresponding congestion window adjustment information of the packet：Dw=(r-ri) * RTT-L, wherein：Dw is to determine again
The corresponding congestion window adjustment information of the packet；R is the currently available link bandwidth of go-between transmission equipment；ri
The input rate of sequence is transmitted for the go-between transmission equipment current data packet；RTT is that current data packet transmits RTT；L is
Packet transmits the length of sequence where the packet；
Updating block, if being less than the congestion window carried in the packet for the congestion window adjustment information redefined out
During adjustment information, the congestion window carried in the packet is replaced with the congestion window adjustment information redefined out and is adjusted and is believed
Breath.
15. device as claimed in claim 14, it is characterised in that also include：
Transmitting element, for the packet to be sent into receiving device, indicates the receiving device by the packet
The congestion window adjustment information of middle carrying carries and returns to sending ending equipment in the response ack msg bag of the packet.
16. device as claimed in claim 14, it is characterised in that the determining unit, including：
First determination subelement, if for comprising at least two data bags transmit sequence when, for each packet transmit sequence,
The corresponding service quality QoS class information of sequence is transmitted according to the packet and bandwidth requirement information is defined as packet transmission
The bandwidth that sequence is distributed；
Second determination subelement, the ratio of current available bandwidth is accounted for for being defined as the bandwidth of packet transmission sequence distribution；
3rd determination subelement, is used for and determines that the corresponding congestion window adjustment of packet transmission sequence is believed according to below equation
Breath：Or determine that the corresponding congestion window of packet transmission sequence is adjusted according to below equation
Whole informationWherein dwjFor the corresponding congestion window adjustment of j-th strip packet transmission sequence
Information；R is the currently available link bandwidth of go-between transmission equipment；riaThe institute included for the go-between transmission equipment
There is packet to transmit the input rate sum of sequence；Sequence is transmitted for each packet that the go-between transmission equipment is included
Packet transmits RTT average on row；LjThe length of sequence is transmitted for j-th strip packet；tjFor the go-between transmission equipment
The bandwidth for transmitting sequence distribution for j-th strip packet accounts for the ratio of current available bandwidth；
4th determination subelement, the corresponding congestion window adjustment information of data transmission sequence where for determining the packet
For the corresponding congestion window adjustment information of the packet.
17. a kind of data transfer control method, it is characterised in that including：
Receiving end/sending end equipment is passed sequentially through to be taken in the packet of at least one go-between transmission equipment transmission, the packet
With the current congestion window adjustment information of the packet, the congestion window adjustment information is at least one described mid-level net
Network transmission equipment after the packet is received, according to itself current data packet transmit sequence input rate information and can
Determined with the transmission round-trip delay RTT information carried in link bandwidth information and the packet；Wherein, the congestion
The window adjustment information go-between transmission equipment is specifically redefined according to below equation：Dw=(r-ri)*RTT；
Or the congestion window adjustment information go-between transmission equipment is specifically redefined according to below equation：Dw=
(r-ri) * RTT-L, wherein：Dw is the corresponding congestion window adjustment information of the packet determined again；During r is described
Between the currently available link bandwidth of web-transporting device；riThe defeated of sequence is transmitted for the go-between transmission equipment current data packet
Enter speed；RTT is that current data packet transmits RTT；L is the length that packet where the packet transmits sequence；
Read the congestion window adjustment information；
The congestion window adjustment information of reading is carried and returns to the transmitting terminal in the response ack msg bag of the packet
Equipment.
18. a kind of data transfer controller, it is characterised in that including：
Receiving unit, the packet of at least one go-between transmission equipment transmission is passed sequentially through for receiving end/sending end equipment,
The current congestion window adjustment information of the packet is carried in the packet, the congestion window adjustment information is described
At least one go-between transmission equipment transmits the defeated of sequence after the packet is received according to itself current data packet
Enter the transmission round-trip delay RTT information carried in rate information and available link bandwidth information and the packet to determine
's；Wherein, the congestion window adjustment information go-between transmission equipment is specifically redefined according to below equation：
Dw=(r-ri)*RTT；Or the congestion window adjustment information is that the go-between transmission equipment is specific according to below equation
Redefine：Dw=(r-ri) * RTT-L, wherein：Dw is the corresponding congestion window adjustment of the packet determined again
Information；R is the currently available link bandwidth of go-between transmission equipment；riFor the go-between transmission equipment current data
The input rate of bag transmission sequence；RTT is that current data packet transmits RTT；L is packet transmission sequence where the packet
Length；
Reading unit, for reading the congestion window adjustment information；
Transmitting element, the congestion window adjustment information for the reading unit to be read carries the response in the packet
The sending ending equipment is returned in ack msg bag.
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| CN201210572735.2A CN103905328B (en) | 2012-12-25 | 2012-12-25 | A kind of data transfer control system, method and relevant apparatus |
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| CN201210572735.2A CN103905328B (en) | 2012-12-25 | 2012-12-25 | A kind of data transfer control system, method and relevant apparatus |
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Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104125159B (en) * | 2014-07-29 | 2017-09-12 | 福建星网锐捷网络有限公司 | A kind of congestion bandwidth detection method, apparatus and system |
| CN105472655B (en) * | 2014-09-09 | 2019-08-02 | 中国移动通信集团公司 | A kind of method of adjustment of congestion window, relevant apparatus and system |
| CN105392157B (en) * | 2014-09-09 | 2019-01-08 | 中国移动通信集团公司 | A kind of method of adjustment of congestion window, relevant apparatus and system |
| CN105553868A (en) * | 2015-09-21 | 2016-05-04 | 宇龙计算机通信科技(深圳)有限公司 | Data transmission method and device and terminal |
| CN107171969B (en) * | 2016-03-07 | 2020-06-02 | 华为技术有限公司 | Data transmission method, device and system |
| US10353590B2 (en) * | 2016-05-19 | 2019-07-16 | Hewlett Packard Enterprise Development Lp | Methods and systems for pre-processing sensor measurements |
| CN106789702B (en) * | 2016-12-30 | 2020-05-12 | 广州华多网络科技有限公司 | Method and device for controlling transmission performance of TCP (Transmission control protocol) |
| CN108449772A (en) * | 2017-02-16 | 2018-08-24 | 网宿科技股份有限公司 | Routing resource and system, node server based on multi-path transmission protocol |
| CN107204936A (en) * | 2017-06-21 | 2017-09-26 | 北京畅游天下网络技术有限公司 | A kind of transmission method of data, device and equipment |
| CN108965150B (en) * | 2018-07-27 | 2021-11-16 | 广东电网有限责任公司 | Data transmission system with direct acceleration framework |
| KR102139378B1 (en) * | 2018-11-20 | 2020-07-29 | 울산과학기술원 | Method and apparatus for controlling congestion |
| EP3674824B1 (en) | 2018-12-28 | 2023-08-23 | Siemens Aktiengesellschaft | Method for operating a communication system for transferring time-critical data and communication device |
| CN109981815B (en) * | 2019-03-19 | 2022-05-27 | 广州品唯软件有限公司 | IP address selection method, terminal, server and system |
| CN111294664A (en) * | 2019-05-28 | 2020-06-16 | 杭州萤石软件有限公司 | Audio and video data transmission method, electronic equipment and storage medium |
| CN112054965A (en) * | 2019-06-05 | 2020-12-08 | 阿里巴巴集团控股有限公司 | Congestion control method, equipment and computer readable medium |
| CN113746750A (en) * | 2020-05-30 | 2021-12-03 | 华为技术有限公司 | Method, network node, system and storage medium for forwarding data message |
| CN112165355B (en) * | 2020-10-23 | 2022-03-22 | 中国电子科技集团公司第三十研究所 | Satellite network-oriented UDP-based reliable data transmission method |
| CN112636877B (en) * | 2020-12-18 | 2021-07-06 | 深圳市微网力合信息技术有限公司 | Data transmission method, system and terminal based on wifi6 |
| CN114401225A (en) * | 2021-12-02 | 2022-04-26 | 北京快乐茄信息技术有限公司 | Data processing method and device, electronic equipment and storage medium |
| CN114866489A (en) * | 2022-04-28 | 2022-08-05 | 清华大学 | Congestion control method and device and training method and device of congestion control model |
| CN115022205A (en) * | 2022-05-31 | 2022-09-06 | 广东电网有限责任公司 | Cross-network data transmission method applied to high-concurrency scene of massive terminals |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1529471A (en) * | 2003-10-17 | 2004-09-15 | 北京邮电大学 | Method for realizing bandwidth ensurement to high-priority-level user in wireless LAN |
| CN101056259A (en) * | 2007-05-21 | 2007-10-17 | 中南大学 | A collaborative congestion control method for high-speed network |
| US7916640B1 (en) * | 2005-06-20 | 2011-03-29 | Marvell International Ltd. | Buffer overflow prevention for network devices |
-
2012
- 2012-12-25 CN CN201210572735.2A patent/CN103905328B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1529471A (en) * | 2003-10-17 | 2004-09-15 | 北京邮电大学 | Method for realizing bandwidth ensurement to high-priority-level user in wireless LAN |
| US7916640B1 (en) * | 2005-06-20 | 2011-03-29 | Marvell International Ltd. | Buffer overflow prevention for network devices |
| CN101056259A (en) * | 2007-05-21 | 2007-10-17 | 中南大学 | A collaborative congestion control method for high-speed network |
Non-Patent Citations (1)
| Title |
|---|
| 《基于RTT自适应的无线TCP改进算法》;刘俊;《计算机工程与设计》;20120531;第33卷(第5期);全文 * |
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