CN102075412B - Network data transmission rate control equipment and method - Google Patents
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- CN102075412B CN102075412B CN201010522441XA CN201010522441A CN102075412B CN 102075412 B CN102075412 B CN 102075412B CN 201010522441X A CN201010522441X A CN 201010522441XA CN 201010522441 A CN201010522441 A CN 201010522441A CN 102075412 B CN102075412 B CN 102075412B
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Abstract
The invention discloses a network data transmission rate control method, comprising the steps of: acquiring IP (Internet Protocol) data packets to be transmitted; acquiring flow control information correlated to the IP data packets according to the sources or target IP addresses of the IP data packets; determining whether the transmission of the IP data packets is allowed according to an admissible value in the correlated flow control information and the size of the IP data packets; if so, updating the admissible value in the correlated flow control information according to the size of the IP data packets, and transmitting the IP data packets, and if not, caching the IP data packets so as to retransmit the IP data packets later or discarding the IP data packets. The invention also discloses network data transmission rate control equipment for executing the method.
Description
Technical field
The present invention relates to computer network field, relate in particular to network data transmission rate control equipment and method that the transmission rate of network data is controlled.
Background technology
In the network service of tradition based on ICP/IP protocol, the network data forwarding unit such as router adopts FIFO (first in first out) usually, the treatment mechanism of the transmission of trying one's best is come the transmission of IP data bag.When network data amount and key business data were few in early days, this treatment mechanism did not embody very large shortcoming, and the network data forwarding unit abandons datagram to process congested simply.But along with the development of computer network, want the sharp increase of transmitted data amount, and multimedia and VOIP data etc. are to the increase of the high application of delay requirement, and the processing method of the simple packet discard of network data forwarding unit no longer has been fit to current network.The simple increase network bandwidth can not tackle the problem at its root.Therefore, the developers of network have proposed the concept of service quality QoS (quality of service), namely for various heterogeneous networks application demands, provide the network service function of different service quality.It will be basic demand to future IP network that the QoS ability is provided.
There have been at present the various processing modes that satisfy qos requirement, for example in the operating system such as Linux, by the packet that will the send arrangement of again joining the team, then by again going out team after the series of algorithms computing, thereby reach the function that different QoS demands is provided different network service quality.In current (SuSE) Linux OS, these algorithms comprise: pfifo_fast, token bucket filter (TBF), random fair (SFQ), layering token bucket (HTB) etc.For the network application of reality, can reach its requirement by using an algorithm or Integrated using polyalgorithm.Yet the system manager need to carry out very loaded down with trivial details configuration in order to obtain gratifying network service quality to (SuSE) Linux OS usually.This is in the situation that the increasingly sophisticated especially difficulty that becomes of network environment.
For example, in a kind of common network environment, for example in office environment, a plurality of net data terminates are shared a network bandwidth, and along with the appearance of P2P technology, the data terminal that part is carried out P2P communication has taken the most network bandwidth usually, thereby causes other net data terminate can't normally carry out network data transmission.If utilize existing network data transmission rate control mode to carry out flow control, so that when guaranteeing that each net data terminate can carry out transfer of data with the normal network bandwidth, just need to carry out the current limliting rule configuration for each net data terminate.A kind of commonly used current-limiting mode for each net data terminate in the prior art has been shown in Fig. 1, because each net data terminate has an I P address, by for each IP address, a kind of traffic control rule being set, can have reached the requirement of current limliting.But can be with the increase of the number of the net data terminate that makes the shared network bandwidth, the fuzzy rules that this mode need to configure is corresponding increase also, is difficult to safeguard thereby cause management work to network data transmission to become.
Therefore, need a kind of new network data transmission rate control equipment and method, can facilitate and efficiently network data transmission rate be controlled, so that a plurality of net data terminates of shared network bandwidth can normal transmission speed carry out network data transmission, also facilitate simultaneously the system manager to be configured and to safeguard.
Summary of the invention
In view of the above problems, the present invention has been proposed in order to a kind of overcome the problems referred to above or the network data transmission rate control equipment that addresses the above problem at least in part and method are provided.
According to an aspect of the present invention, provide a kind of network data transmission rate control method, comprised step: obtained the I P packet that will transmit; Obtain according to source or the purpose I P address of this I P packet the flow control information that is associated with this I P packet, described flow control information has the feasible value that allows the transmission of data size based on the ident value of described source or purpose IP address and indication; Determine whether to allow to transmit the described IP packet that will transmit according to the size of the feasible value in the described flow control information that is associated and described IP packet; If allow this IP packet of transmission, upgrade feasible value in the described flow control information that is associated according to the size of this IP packet, and transmit this IP packet; And if do not allow to transmit this IP packet, this IP packet of buffer memory is so that the retry described IP packet of transmission or abandon described IP packet after a while.
Alternatively, in network data transmission rate control method according to the present invention, according to the time interval of the IP packet that will transmit and the previous IP packet that will transmit that is associated with the same traffic control information, upgrade the feasible value in flow control information, the wherein linear increase along with the increase in the described time interval of the feasible value in this flow control information, but be no more than maximum permissible value.
Therefore, depend on size and the transmission frequency of the IP packet that will transmit with the size of feasible value in flow control information that each IP packet is associated, and can not surpass maximum permissible value.Therefore, can utilize the size of feasible value to control the traffic transport speed relevant to each IP, and can limit the instantaneous transmission speed of each IP maximum, this is in the situation that a plurality of network communication terminal shared network bandwidth is especially effective.
In addition, the ident value of flow control information can be based on source or purpose IP address and the corresponding subnet mask of described IP packet, like this, each flow control information can be corresponding to an IP network section, can carry out flow control for each network segment thereby make according to network data transmission rate control method of the present invention, make the present invention can finely be applicable to complicated network application environment.
According to another aspect of the present invention, provide a kind of network data transmission rate control equipment, comprised the IP packet memory, the IP packet that storage will be transmitted; Flow control information memory, storage flow control information, described flow control information have the feasible value that allows the transmission of data size based on the ident value of the source of IP packet or purpose IP address and indication; Transmission control unit (TCU), be suitable for obtaining the described IP packet that will transmit from described IP packet memory, obtain the flow control information that is associated with the described IP packet that will transmit from described flow control information memory, and determine whether to allow to transmit the described IP packet that will transmit according to the size of the feasible value in the described flow control information that is associated and the described IP packet that will transmit.
This network data transmission rate control equipment also comprises the flow control information access device, be suitable for the flow control information in the described flow control information memory of access under the control of transmission control unit (TCU), and when transmission control unit (TCU) allows the described IP packet that will transmit of transmission, upgrade feasible value in the described flow control information that is associated according to the size of the IP packet that will transmit.
In addition, this network data transmission rate control equipment also comprises and is suitable for the IP data packet discarding device that transmits the IP data packet transmission device of the described IP packet that will transmit and be suitable for abandoning the described IP packet that will transmit.
Alternatively, in network data transmission rate control equipment according to the present invention, the flow control information access device is suitable for the time interval according to the described IP packet that will transmit and the same previous IP packet that will transmit that is associated with described flow control information, upgrade the feasible value in described flow control information, feasible value in wherein said flow control information is linear the increase along with the increase in the described time interval, but is no more than maximum permissible value.
In addition alternatively, the ident value of flow control information can be based on source or purpose IP address and the corresponding subnet mask of IP packet, like this, each flow control information can be corresponding to an IP network section, can carry out flow control for each network segment thereby make according to network data transmission rate control equipment of the present invention, make the present invention can finely be applicable to complicated network application environment.
According to aspect in addition of the present invention, a kind of network data transmission rate control system is provided, comprise one or more data transmission terminal, sending and receiving IP packet; And according to network data transmission rate control equipment of the present invention, the IP packet of these data transmission terminals institutes sending and receiving is carried out transmission rate control.
According to transmission rate control mode of the present invention, can facilitate and efficiently network data transmission rate be controlled, so that a plurality of net data terminates of shared network bandwidth can normal transmission speed carry out network data transmission, also facilitate simultaneously the system manager to be configured and to safeguard.
Description of drawings
By reading hereinafter detailed description of the preferred embodiment, various other advantage and benefits will become cheer and bright for those of ordinary skills.Accompanying drawing only is used for the purpose of preferred implementation is shown, and does not think limitation of the present invention.And in whole accompanying drawing, represent identical parts with identical reference symbol.In the accompanying drawings:
Fig. 1 shows the schematic diagram of the mode of in prior art, network data transmission rate being controlled;
Fig. 2 schematically shows the schematic diagram according to the network data transmission rate control system of the embodiment of the present invention;
Fig. 3 schematically shows the block diagram of the network data transmission rate control equipment in Fig. 2; And
Fig. 4 schematically shows the flow chart of network data transmission rate control method according to an embodiment of the invention.
Specific embodiment
The invention will be further described below in conjunction with accompanying drawing and concrete execution mode.Fig. 2 schematically shows the schematic diagram according to the network data transmission rate control system 200 of the embodiment of the present invention.As shown in Figure 2, network data transmission rate control system 200 comprises one or more data transmission terminal 210_1,210_2, ..., 210_n, these data transmission terminals can be based on any equipment that the IP agreement is carried out network data transmission, for example traditional desktop computer, notebook, handheld device etc.These data transmission terminals need to carry out network service and use to carry out diverse network.These data transmission terminals (210_1,210_2 ..., 210_n) visit external network 230 and shared network bandwidth via network data transmission rate control equipment 220.Therefore, network data transmission rate control equipment 220 can be controlled the available network bandwidth of each data transmission terminal, i.e. network transmission speed.According to the characteristics of network service, network data transmission rate control equipment 220 sends the data transmission rate of data to external network except controlling each data transmission terminal, also controls each data transmission terminal from the data receiver speed of external network receive data.
In network data transmission rate control system 200, each data transmission terminal (210_1,210_2 ..., 210_n) carry out network data transmission based on the IP agreement, that is to say, carry out network data transmission with the IP packet.Because each IP packet all has source IP address and purpose IP address, therefore, network data transmission rate control equipment 220 can be by coming control data transmission speed based on source IP address or purpose IP address, thereby realize controlling for the speed of each data transmission terminal.
Fig. 3 schematically shows the block diagram of the network data transmission rate control equipment 220 in Fig. 2.As shown in Figure 3, network data transmission rate control equipment 220 comprises packet memory 221, flow control information memory 223, transmission control unit (TCU) 225, flow control information access device 227, data packet transmission device 228 and data packet discarding device 229.
The packet that packet memory 221 store network data transmission rate control appliances 220 will transmit, the IP packet that will send as each data transmission terminal or the IP packet that sends to each data transmission terminal from the outside.Because network data transmission rate control equipment 220 will be a plurality of data transmission terminal services simultaneously, therefore, usually when receiving these packets, at first with these data pack buffers in packet memory 221, and process one by one subsequently these packets.Alternatively, these packets are stored in packet memory 221 in the mode of formation.
Flow control information memory 223 a plurality of flow control informations of storage, each flow control information comprises identification information and feasible value.The control information of identification information sign corresponding discharge, and set up association between the packet of flow control information and applicable this flow control information.That is to say, can find flow control information from flow control information memory 223 according to the source IP address of packet or purpose IP address, be i.e. the source IP address of identification information based on data bag or purpose IP address.According to an execution mode, this identification information can be exactly source IP address or the purpose IP address of packet.According to further execution mode, identification information can be configured to the cryptographic Hash that obtains after Hash calculation is carried out in the source IP address of packet or purpose IP address, flow control information is stored in flow control information memory 223 in the list mode, and the indication of the ident value of each flow control information is from the distance of list head.Utilize this mode, can be by source IP address or the purpose IP address computation cryptographic Hash for each packet that will transmit, and find for the flow control information of this cryptographic Hash the flow control information that is associated with this flow control information by searching to be in from the distance of flow control information list head.This processing mode can be rapidly searches based on source or purpose IP address the flow control information that is associated.In addition, identification information except the source IP address of based on data bag or purpose IP address, source IP address or purpose IP address and corresponding subnet mask that can also the based on data bag.For example, can utilize source IP or the purpose IP network section of at first utilizing subnet mask to obtain packet, and construct identification information based on this IP network subsequently.That is to say, identification information is suitable for setting up the association between packet in same subnet of being in of flow control information and applicable this flow control information, and this is applicable to catenet and uses, and wherein needs the network traffics of each subnet are controlled.
Feasible value in each flow control information has reflected the total amount that the packet that is associated with this flow control information can be allowed to transmit, and this feasible value is larger, allows the total amount of the packet that transmits more.Alternatively, this feasible value does not equal to allow the data total amount transmitted just, but and has the certain proportion relation between this data total amount.And the data total amount is not the total quantity that means packet, and due to varying in size of each packet, the data total amount here means the total data volume that can transmit (for example value take byte as unit).
What will control due to the present invention is not the transmission quantity of network data, but the transmission rate of network data, for this reason, in the present invention, feasible value in each flow control information increases on the one hand as time goes by, reduce along with the transmission of associated data bag again on the other hand, thereby can utilize this feasible value to control the transmission rate of network data.In addition, the proper network communication of blocking other data transmission terminals in order to tackle certain data transmission terminal to produce a large amount of transmission quantities suddenly, feasible value can not increase always, but has certain maximum permissible value, in order to can the transmission quantity of the unexpected increase of certain data transmission terminal be limited.
Transmission control unit (TCU) 225 obtains the IP packet that will transmit from packet memory, and obtain the flow control information that is associated with the IP packet that will transmit from flow control information memory 223 via flow control information access device 227, and determine whether to allow this IP packet of transmission according to the size of the feasible value in this flow control information that is associated and the IP packet that will transmit.
Allow the data total amount transmitted less than the size of IP packet if feasible value is corresponding, refuse the transmission of this IP packet, at this moment, this IP packet can be stored into again in packet memory 221 again to attempt, perhaps this IP Packet Generation be abandoned this IP packet to data packet discarding device 229.Alternatively, transmission control unit (TCU) 225 is being attempted this IP packet pre-determined number of transmission (being for example 2 times or 3 times) afterwards, just abandons this IP packet by data packet discarding device 229.
On the contrary, if the corresponding data total amount transmitted of allowing of feasible value allows transmission greater than the size of IP packet.Transmit this IP packet with this IP Packet Generation to the data packet transmission device this moment, simultaneously upgrade feasible value in the flow control information that is associated via flow control information access device 227, in order to therefrom deduct the big or small corresponding value with the IP packet that transmits.
As mentioned above, the flow control information in flow control information storage device 227 access flow control information memories 223.For example under the control of transmission control unit (TCU) 225, obtain the flow control information (as above reference flow control information memory 223 is described) that is associated with certain IP packet, and, when transmission control unit (TCU) 225 allows the transmission of IP data bag, upgrade feasible value in the flow control information that is associated according to the size of the IP packet that will transmit.
In addition, as mentioned above, the feasible value in flow control information increases on the one hand as time goes by, reduces along with the transmission of associated data bag again on the other hand.Therefore, when transmission control unit (TCU) 225 need to read flow control information, at first flow control information storage device 227 upgrades the feasible value in the flow control information that reads, and the flow control information after upgrading subsequently sends to transmission control unit (TCU) 225, thereby makes transmission control unit (TCU) 225 control transmission rate based on correct feasible value.Alternatively, recruitment that can feasible value be set to the current IP packet that will transmit and the previous IP packet that will transmit handled, that be associated with this flow control information between the time interval be directly proportional, feasible value is set to be no more than maximum permissible value simultaneously.
In addition, when transmission control unit (TCU) 225 need to read with certain IP packet is associated flow control information, if flow control information access device 227 fails to obtain the flow control information that is associated from flow control information memory 223, flow control information access device 227 creates new flow control information in this flow control information memory 223, its identification information is corresponding to the source IP of this IP packet or purpose IP address, and has the feasible value of the maximum permissible value of being set to.Flow control information access device 227 will be somebody's turn to do the new flow control information that creates and return to transmission control unit (TCU) 225 subsequently.
Fig. 4 schematically shows the flow chart of network data transmission rate control method 400 according to an embodiment of the invention, and the method is suitable for carrying out in network data transmission rate control equipment 220 as above.As shown in Figure 4, the method starts from step S410, wherein obtains the IP packet that will transmit, and alternatively, the IP packet is stored in the data packet queue of packet memory 221, and therefore, step S410 obtains the IP packet that will transmit from data packet queue.Subsequently in step S420, obtain according to the source of the IP packet that will transmit or purpose IP address the flow control information that is associated with this IP packet from flow control information memory 230, as mentioned above, this flow control information has the feasible value that ident value and indication based on source or purpose IP address allow the transmission of data size.Subsequently, in step S430, judge whether to allow this IP packet of transmission according to the size of the feasible value in the flow control information that is associated and IP packet.If allow this IP packet of transmission, in step S440, upgrade feasible value in the flow control information that is associated according to the size of the IP packet that will transmit, and in step S450 this IP packet of transmission.
On the contrary, if determine not allow to transmit this IP packet in step S430, in step S460, this IP packet of buffer memory perhaps directly abandons this IP packet in order to again attempt after a while.Alternatively, in step S460, the storage of IP packet can be got back in data packet queue in order to again attempt.And network data transmission rate control method according to the present invention also is included in again, and trial this IP packet pre-determined number of transmission (for example 2 times or 3 times) afterwards, just abandons this IP packet.
Alternatively, in step S420, when obtaining the flow control information that is associated with the IP packet, also upgrade feasible value in this flow control information that is associated according to the IP packet that will transmit and the time interval between the previous IP packet that will transmit first pre-treatment, that be associated with same flow control information, the wherein linear increase along with the increase in the described time interval of the feasible value in flow control information, but be no more than maximum permissible value.
In addition, if in step S420, fail to get the flow control information that is associated with the IP packet, can create the flow control information that is associated with this IP packet, the ident value of the flow control information that creates is based on the source of this IP packet or purpose IP address, and described feasible value is set to maximum permissible value.
Should be noted that, in all parts of network data transmission rate control equipment of the present invention, according to its function that will realize and wherein parts have been carried out logical partitioning, but, the present invention is not subject to this, can repartition or make up all parts as required, for example, can be single parts with some component combinations, perhaps some parts further can be decomposed into more subassembly.
All parts embodiment of the present invention can realize with hardware, perhaps realizes with the software module of moving on one or more processor, and perhaps the combination with them realizes.It will be understood by those of skill in the art that and to use in practice microprocessor or digital signal processor (DSP) to realize according to some or all some or repertoire of parts in the network data transmission rate control equipment of the embodiment of the present invention.The present invention can also be embodied as be used to part or all equipment or the device program (for example, computer program and computer program) of carrying out method as described herein.The program of the present invention that realizes like this can be stored on computer-readable medium, perhaps can have the form of one or more signal.Such signal can be downloaded from internet website and obtain, and perhaps provides on carrier signal, perhaps provides with any other form.
It should be noted above-described embodiment the present invention will be described rather than limit the invention, and those skilled in the art can design alternative embodiment in the situation that do not break away from the scope of claims.In the claims, any reference symbol between bracket should be configured to limitations on claims.Word " comprises " not to be got rid of existence and is not listed in element or step in claim.Being positioned at word " " before element or " one " does not get rid of and has a plurality of such elements.The present invention can realize by means of the hardware that includes some different elements and by means of the computer of suitably programming.In having enumerated the unit claim of some devices, several in these devices can be to come imbody by same hardware branch.The use of word first, second and C grade does not represent any order.Can be title with these word explanations.
Claims (15)
1. network data transmission rate control method comprises step:
Obtain the IP packet that will transmit;
Obtain according to the source of the described IP packet that will transmit or purpose IP address the flow control information that is associated with described IP packet, described flow control information has the feasible value that allows the transmission of data size based on the ident value of described source or purpose IP address and indication;
Determine whether to allow the described IP packet of transmission according to the size of the feasible value in the described flow control information that is associated and described IP packet;
If allow the described IP packet of transmission, upgrade feasible value in the described flow control information that is associated according to the size of described IP packet, and transmit described IP packet; And
If do not allow to transmit described IP packet, the described IP packet of buffer memory is so that retry transmits described IP packet or abandons described IP packet after a while;
Wherein, the method also comprises:
According to the time interval of the described IP packet that will transmit and the same previous IP packet that will transmit that is associated with described flow control information, upgrade the feasible value in described flow control information, feasible value in wherein said flow control information increases along with the increase in the described time interval, but is no more than maximum permissible value.
2. network data transmission rate control method as claimed in claim 1, wherein in the described step of obtaining the flow control information that is associated with described IP packet, if there is no described flow control information also comprises step:
Create the flow control information be associated with described IP packet, the ident value of the flow control information that creates is based on the source of described IP packet or purpose IP address, and described feasible value is set to maximum permissible value.
3. network data transmission rate control method as claimed in claim 1 or 2, wherein obtain the described IP packet that will transmit from the IP data packet queue, if do not allow to transmit the described IP packet that will transmit, the described IP packet storage that will transmit is got back in described IP data packet queue so that the described IP packet of retry transmission after a while.
4. network data transmission rate control method as claimed in claim 3, also comprise step: after the described IP packet pre-determined number of retry transmission, abandon described IP packet.
5. network data transmission rate control method as claimed in claim 1 or 2, the ident value of wherein said flow control information is based on source or purpose IP address and the corresponding subnet mask of described IP packet.
6. network data transmission rate control method as claimed in claim 1 or 2, the ident value of wherein said flow control information is based on the source IP address of described IP packet.
7. network data transmission rate control method as claimed in claim 1 or 2, the ident value of wherein said flow control information is based on the purpose IP address of described IP packet.
8. network data transmission rate control equipment comprises:
The IP packet that IP packet memory, storage will transmit;
Flow control information memory, storage flow control information, described flow control information have the feasible value that allows the transmission of data size based on the ident value of the source of IP packet or purpose IP address and indication;
Transmission control unit (TCU), be suitable for obtaining the described IP packet that will transmit from described IP packet memory, obtain the flow control information that is associated with the described IP packet that will transmit from described flow control information memory, and determine whether to allow to transmit the described IP packet that will transmit according to the size of the feasible value in the described flow control information that is associated and the described IP packet that will transmit;
The flow control information access device, be suitable for the flow control information in the described flow control information memory of access under the control of described transmission control unit (TCU), and when described transmission control unit (TCU) allows the described IP packet that will transmit of transmission, upgrade feasible value in the described flow control information that is associated according to the size of the described IP packet that will transmit;
The data packet transmission device is suitable for transmitting the described IP packet that will transmit; And
The data packet discarding device is suitable for abandoning the described IP packet that will transmit;
Wherein said flow control information access device is suitable for the time interval according to the described IP packet that will transmit and the same previous IP packet that will transmit that is associated with described flow control information, upgrade the feasible value in described flow control information, feasible value in wherein said flow control information increases along with the increase in the described time interval, but is no more than maximum permissible value.
9. network data transmission rate control equipment as claimed in claim 8, wherein when described transmission control unit (TCU) fails to obtain from described flow control information memory the flow control information that is associated with the described IP packet that will transmit, described flow control information access device is suitable for creating the flow control information that is associated with the described IP packet that will transmit, the ident value of the flow control information that creates is based on the source of described IP packet or purpose IP address, and described feasible value is set to maximum permissible value.
10. network data transmission rate control equipment as claimed in claim 8 or 9, wherein said IP packet memory has the IP data packet queue, the described IP packet that will transmit is stored in described IP data packet queue, if described transmission control unit (TCU) does not allow to transmit the described IP packet that will transmit, the described IP packet storage that will transmit is got back in described IP data packet queue so that the described IP packet of retry transmission after a while.
11. network data transmission rate control equipment as claimed in claim 10, wherein said transmission control unit (TCU) abandons described IP packet by described IP data packet discarding device after the described IP packet pre-determined number that will transmit of retry transmission.
12. network data transmission rate control equipment as claimed in claim 8 or 9, the ident value of wherein said flow control information is based on source or purpose IP address and the corresponding subnet mask of described IP packet.
13. network data transmission rate control equipment as claimed in claim 8 or 9, the ident value of wherein said flow control information is based on the source IP address of described IP packet.
14. network data transmission rate control equipment as claimed in claim 8 or 9, the ident value of wherein said flow control information is based on the purpose IP address of described IP packet.
15. a network data transmission rate control system comprises:
One or more data transmission terminal, sending and receiving IP packet; And
According to claim 8, the described network data transmission rate control equipment of any in-14 carry out transmission rate to the IP packet of described one or more data transmission terminal institute sending and receiving and control.
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| CN1585374A (en) * | 2003-08-19 | 2005-02-23 | 广东省电信有限公司科学技术研究院 | Network system and controlling method for assuring end to end IP telecommunication service quality |
| CN101552722A (en) * | 2008-04-03 | 2009-10-07 | 北京启明星辰信息技术股份有限公司 | Method and device for managing network flow bandwidth |
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