CN102025635A - Method and device for controlling flow of network working under full duplex model - Google Patents
Method and device for controlling flow of network working under full duplex model Download PDFInfo
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Abstract
The invention provides a method and a device for controlling the flow of a network working under a full duplex model. The method comprises the following steps that: each communication node transmits a detection packet to an opposite end node after the flow control is triggered; the communication node transmits response to the opposite end node after receiving the detection packet; the communication node calculates the time difference between the time of receiving the response and the time of transmitting the detection packet relative to the response after receiving the response, and compares the time difference with a first threshold; and the communication node reduces the speed of transmitting and receiving data when the time difference is larger than the first threshold. The method can intelligently regulate the speed of transmitting and receiving data according to the network state and effectively solve the influence on client machines when a great number of data is transmitted, is more flexible compared with the method of purely limiting the transmission speed, and can also ensure the proportion reserved for the client machines to use the network bandwidth.
Description
Technical field
The present invention relates to a kind of method for controlling network flow and device, relate in particular to a kind of method for controlling network flow and device that is operated under the full-duplex mode.
Background technology
At present since the application of network data transmission more and more widely, in data transmission procedure, for limited bandwidth resources take situation seem come more important, the way and the underaction of simple limiting network flow, it can not will certainly influence the normal network application of client computer along with the suitable adjustment of the variation of network in network impairment.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of method for controlling network flow and device that is operated under the full-duplex mode is provided, and can adjust the control of flow according to network condition.
In order to solve the problems of the technologies described above, the present invention proposes a kind of method for controlling network flow that is operated under the full-duplex mode, comprising:
After triggering flow control, each communication node sends to peer node and detects bag;
Described communication node is replied to the peer node transmission after receiving the detection bag;
Described communication node receive reply after, calculating receives the time difference between described time of replying and the described transmitting time of replying corresponding detection bag, and a described time difference and a first threshold compared, comparing the described time difference during, reducing the speed that transmits and receive data greater than described first threshold.
Further, said method also can have following characteristics:
When described communication node is less than or equal to described first threshold in the described time difference, calculate the ratio of the mean value of described time difference and preceding N the time difference that calculates for N time, and described ratio and one second threshold value compared, when comparing described ratio, reduce the speed that transmits and receive data greater than described second threshold value; Comparing described ratio when being less than or equal to described second threshold value, the speed that improves or keep transmitting and receive data;
N is a positive integer.
Further, said method also can have following characteristics:
Described communication node reduces the speed that transmits and receive data in described time difference during greater than described first threshold by stopping to transmit and receive data;
After triggering flow control, described communication node sends and detects bag if the state that stops to transmit and receive data then recovers earlier to transmit and receive data.
Further, said method also can have following characteristics:
The triggering of described flow control is according to default sense cycle, triggers automatically when each sense cycle arrives.
Further, said method also can have following characteristics:
Described communication node calls the transmission and the reception of different thread execution data.
In order to solve the problems of the technologies described above, the present invention also proposes a kind of network traffics control device that is operated under the full-duplex mode, comprise data organization and sending module, network traffic recording comparison module, network intelligence control management module, and the Data Receiving feedback module, wherein:
Described data organization and sending module send data in order to the transmission rate according to configuration, be included in receive the flow control triggering command after, send and detect bag;
Described Data Receiving feedback module in order to receive data according to the receiving velocity that disposes, comprises receiving to detect and wrap and reply, and after receiving the detection bag, transmission is replied;
Described network traffic recording comparison module, receive the time of replying in order to time and the described Data Receiving feedback module that writes down described data organization and sending module transmission detection bag, calculating receives the time difference between time of replying and the described transmitting time of replying corresponding detection bag, and a described time difference and a first threshold compared, and comparative result is sent to described network intelligence control management module;
Described network intelligence control management module in order to after triggering flow control, sends described flow control triggering command to described data organization and sending module; And be described time difference during greater than described first threshold at comparative result, reduce the transmission speed of described configuration and the inbound pacing of described configuration.
Further, said apparatus also can have following characteristics:
Described network traffic recording comparison module, comparing the described time difference when being less than or equal to described first threshold, also calculate the ratio of the mean value of described time difference and preceding N the time difference that calculates for N time, and described ratio and one second threshold value compared, then comparative result is sent to described network intelligence control management module; N is a positive integer;
Described network intelligence control management module is the described time difference to be less than or equal to described first threshold at comparative result, and described ratio reduces the transmission speed of described configuration and the inbound pacing of described configuration during greater than described second threshold value; And be the described time difference to be less than or equal to described first threshold at comparative result, and described ratio is when being less than or equal to described second threshold value, improves or keeps the transmission speed of described configuration and the inbound pacing of described configuration.
Further, said apparatus also can have following characteristics:
Described network intelligence control management module is described time difference during greater than described first threshold at comparative result, is to reduce the speed that transmits and receive data by sending halt instruction to described data organization and sending module and described Data Receiving feedback module; And after triggering flow control, if being in, described data organization and sending module stop transmit status, described Data Receiving feedback module is in and stops accepting state, then before described data organization and sending module send described flow control triggering command, earlier to described data organization and sending module and described Data Receiving feedback module transmission activation instruction;
Described data organization and sending module after receiving described halt instruction, stop to send data; After receiving described activation instruction, continue to send data;
Described Data Receiving feedback module after receiving described halt instruction, stops to send data; After receiving described activation instruction, continue to send data.
Further, said apparatus also can have following characteristics:
Described network intelligence control management module is according to default sense cycle, automatic trigger network flow control when each sense cycle arrives.
Further, said apparatus also can have following characteristics:
Transmission and reception that described data organization and sending module and described Data Receiving feedback module call different thread execution data.
The invention provides a kind of method for controlling network flow and device that is operated under the full-duplex mode, can be according to the state of network, the speed that the adjustment of intelligence transmits and receive data, efficiently solve the influence that brings to client computer when sending big data quantity, more flexible with respect to simple this method of restriction transmission rate, also more can guarantee to leave for the ratio that client computer is used the network bandwidth.
Description of drawings
Fig. 1 is a kind of method for controlling network flow flow chart that is operated under the full-duplex mode of the embodiment of the invention;
Fig. 2 is a kind of network traffics control device block diagram that is operated under the full-duplex mode of the embodiment of the invention.
Embodiment
Describe embodiment of the present invention in detail below in conjunction with accompanying drawing.
Referring to Fig. 1, the figure shows a kind of method for controlling network flow that is operated under the full-duplex mode of the embodiment of the invention, comprise step:
Step S101: after triggering flow control, each communication node sends to peer node and detects bag;
Step S102: described communication node is replied to the peer node transmission after receiving the detection bag;
Step S103: described communication node receive reply after, calculating receives the time difference between described time of replying and the described transmitting time of replying corresponding detection bag, and a described time difference and a first threshold compared, comparing the described time difference during, reducing the speed that transmits and receive data greater than described first threshold.
Comparing the described time difference when being less than or equal to described first threshold, then illustrate current network conditions still can, can keep the current speed that transmits and receive data, do not regulate.
So far, the present invention utilizes the full duplex transmission characteristics, detect bag by sending dexterously, and detect and to receive that the duration of replying of described detection bag correspondence judges network state, duration is long, represents that then network state is not good, in order to guarantee the normal network application of client computer, need to reduce the speed that transmits and receive data, be easy to realize, and real-time is better.
In one embodiment, in order to be easier to realize flow control, described communication node can reduce the speed that transmits and receive data by stopping to transmit and receive data in described time difference during greater than described first threshold.After triggering flow control, described communication node sends and detects bag if the state that stops to transmit and receive data then recovers earlier to transmit and receive data.
Wherein, trigger flow control and can adopt multiple mode, for example, manual triggers perhaps is provided with the triggered time point, triggers automatically when reaching at the triggered time point, and sense cycle perhaps is set, and triggers automatically when each sense cycle arrives.
In order to guarantee to leave for the ratio that client computer is used the network bandwidth, preferably, described communication node can also be when the described time difference be less than or equal to described first threshold, continue to calculate the ratio of the mean value of described time difference and preceding N the time difference that calculates for N time, and described ratio and one second threshold value compared, when comparing described ratio, reduce the speed that transmits and receive data greater than described second threshold value; Comparing described ratio when being less than or equal to described second threshold value, the speed that improves or keep transmitting and receive data; N is a positive integer.On specific implementation, can safeguard an array, N the time difference that N time calculates before the storage in described array.
In order other business of client not to be impacted, and in order to realize that data send and separating of receiving, can carry out work simultaneously, finish the Network Transmission of full duplex, the described communication node of the embodiment of the invention call 2 independently thread carry out the transmission and the reception of data respectively.
In order to realize said method, the embodiment of the invention also provides a kind of network traffics control device that is operated under the full-duplex mode, it is positioned on each communication node, detect bag by sending dexterously, and monitor the monitoring that realizes network condition by the transmission duration of described detection bag, thereby adjust the transmission and the inbound pacing of data neatly, guarantee to keep enough resources for the network application of client computer.Described network traffics control device comprises data organization and sending module, network traffic recording comparison module, network intelligence control management module as shown in Figure 2, and the Data Receiving feedback module, wherein:
Described data organization and sending module send data in order to the transmission rate according to configuration, be included in receive the flow control triggering command after, send and detect bag.Described data organization and sending module can be after receiving the flow control triggering command, generate the data that detect bag, and described detection bag is inserted in the transmit queue, thereby described detection bag is sent.
Described Data Receiving feedback module in order to receive data according to the receiving velocity that disposes, comprises receiving to detect and wrap and reply, and after receiving the detection bag, transmission is replied.
Described network traffic recording comparison module, receive the time of replying in order to time and the described Data Receiving feedback module that writes down described data organization and sending module transmission detection bag, calculating receives the time difference between time of replying and the described transmitting time of replying corresponding detection bag, and a described time difference and a first threshold compared, and comparative result is sent to described network intelligence control management module.
Described network intelligence control management module in order to after triggering flow control, sends described flow control triggering command to described data organization and sending module; And be described time difference during greater than described first threshold at comparative result, reduce the transmission speed of described configuration and the inbound pacing of described configuration.Comparing the described time difference when being less than or equal to described first threshold, then illustrate current network conditions still can, can keep the current speed that transmits and receive data, do not regulate.
In one embodiment, in order to be easier to realize flow control, described network intelligence control management module can be, at comparative result is described time difference during greater than described first threshold, reduces the speed that transmits and receive data by sending halt instruction to described data organization and sending module and described Data Receiving feedback module; And after triggering flow control, if being in, described data organization and sending module stop transmit status, described Data Receiving feedback module is in and stops accepting state, then before described data organization and sending module send described flow control triggering command, earlier to described data organization and sending module and described Data Receiving feedback module transmission activation instruction.Described data organization and sending module after receiving described halt instruction, stop to send data; After receiving described activation instruction, continue to send data.Described Data Receiving feedback module after receiving described halt instruction, stops to send data; After receiving described activation instruction, continue to send data.
Wherein, trigger flow control and can adopt multiple mode, for example, manual triggers, the triggered time point perhaps is set, the automatic trigger network flow control when the triggered time, point reached of described network intelligence control management module perhaps is provided with sense cycle, automatic trigger network flow control when described network intelligence control management module arrives in each sense cycle.
In order to guarantee to leave for the ratio that client computer is used the network bandwidth, preferably, described network traffic recording comparison module, comparing the described time difference when being less than or equal to described first threshold, calculate the ratio of the mean value of described time difference and preceding N the time difference that calculates for N time, and described ratio and one second threshold value compared, then comparative result is sent to described network intelligence control management module; N is a positive integer.Described network intelligence control management module is the described time difference to be less than or equal to described first threshold at comparative result, and described ratio reduces the transmission speed of described configuration and the inbound pacing of described configuration during greater than described second threshold value; And be the described time difference to be less than or equal to described first threshold at comparative result, and described ratio is when being less than or equal to described second threshold value, improves or keeps the transmission speed of described configuration and the inbound pacing of described configuration.
In order other business of client not to be impacted, and in order to realize that data send and separating of receiving, can carry out work simultaneously, finish the Network Transmission of full duplex, described data organization of the embodiment of the invention and sending module and described Data Receiving feedback module call 2 the independently transmission and the receptions of thread execution data.
Be the preferred embodiments of the present invention only below, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. method for controlling network flow that is operated under the full-duplex mode is characterized in that:
After triggering flow control, each communication node sends to peer node and detects bag;
Described communication node is replied to the peer node transmission after receiving the detection bag;
Described communication node receive reply after, calculating receives the time difference between described time of replying and the described transmitting time of replying corresponding detection bag, and a described time difference and a first threshold compared, comparing the described time difference during, reducing the speed that transmits and receive data greater than described first threshold.
2. the method for claim 1 is characterized in that, also comprises:
When described communication node is less than or equal to described first threshold in the described time difference, calculate the ratio of the mean value of described time difference and preceding N the time difference that calculates for N time, and described ratio and one second threshold value compared, when comparing described ratio, reduce the speed that transmits and receive data greater than described second threshold value; Comparing described ratio when being less than or equal to described second threshold value, the speed that improves or keep transmitting and receive data;
N is a positive integer.
3. method as claimed in claim 1 or 2 is characterized in that:
Described communication node reduces the speed that transmits and receive data in described time difference during greater than described first threshold by stopping to transmit and receive data;
After triggering flow control, described communication node sends and detects bag if the state that stops to transmit and receive data then recovers earlier to transmit and receive data.
4. the method for claim 1 is characterized in that:
The triggering of described flow control is according to default sense cycle, triggers automatically when each sense cycle arrives.
5. the method for claim 1 is characterized in that:
Described communication node calls the transmission and the reception of different thread execution data.
6. a network traffics control device that is operated under the full-duplex mode is characterized in that, comprises data organization and sending module, network traffic recording comparison module, network intelligence control management module, and the Data Receiving feedback module, wherein:
Described data organization and sending module send data in order to the transmission rate according to configuration, be included in receive the flow control triggering command after, send and detect bag;
Described Data Receiving feedback module in order to receive data according to the receiving velocity that disposes, comprises receiving to detect and wrap and reply, and after receiving the detection bag, transmission is replied;
Described network traffic recording comparison module, receive the time of replying in order to time and the described Data Receiving feedback module that writes down described data organization and sending module transmission detection bag, calculating receives the time difference between time of replying and the described transmitting time of replying corresponding detection bag, and a described time difference and a first threshold compared, and comparative result is sent to described network intelligence control management module;
Described network intelligence control management module in order to after triggering flow control, sends described flow control triggering command to described data organization and sending module; And be described time difference during greater than described first threshold at comparative result, reduce the transmission speed of described configuration and the inbound pacing of described configuration.
7. device as claimed in claim 6 is characterized in that, also comprises:
Described network traffic recording comparison module, comparing the described time difference when being less than or equal to described first threshold, also calculate the ratio of the mean value of described time difference and preceding N the time difference that calculates for N time, and described ratio and one second threshold value compared, then comparative result is sent to described network intelligence control management module; N is a positive integer;
Described network intelligence control management module is the described time difference to be less than or equal to described first threshold at comparative result, and described ratio reduces the transmission speed of described configuration and the inbound pacing of described configuration during greater than described second threshold value; And be the described time difference to be less than or equal to described first threshold at comparative result, and described ratio is when being less than or equal to described second threshold value, improves or keeps the transmission speed of described configuration and the inbound pacing of described configuration.
8. as claim 6 or 7 described devices, it is characterized in that:
Described network intelligence control management module is described time difference during greater than described first threshold at comparative result, is to reduce the speed that transmits and receive data by sending halt instruction to described data organization and sending module and described Data Receiving feedback module; And after triggering flow control, if being in, described data organization and sending module stop transmit status, described Data Receiving feedback module is in and stops accepting state, then before described data organization and sending module send described flow control triggering command, earlier to described data organization and sending module and described Data Receiving feedback module transmission activation instruction;
Described data organization and sending module after receiving described halt instruction, stop to send data; After receiving described activation instruction, continue to send data;
Described Data Receiving feedback module after receiving described halt instruction, stops to send data; After receiving described activation instruction, continue to send data.
9. device as claimed in claim 6 is characterized in that:
Described network intelligence control management module is according to default sense cycle, automatic trigger network flow control when each sense cycle arrives.
10. device as claimed in claim 6 is characterized in that:
Transmission and reception that described data organization and sending module and described Data Receiving feedback module call different thread execution data.
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Application publication date: 20110420 |