CN100490406C - Asymmetric Ethernet data transmission system and method - Google Patents
Asymmetric Ethernet data transmission system and method Download PDFInfo
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- CN100490406C CN100490406C CNB2003101133500A CN200310113350A CN100490406C CN 100490406 C CN100490406 C CN 100490406C CN B2003101133500 A CNB2003101133500 A CN B2003101133500A CN 200310113350 A CN200310113350 A CN 200310113350A CN 100490406 C CN100490406 C CN 100490406C
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Abstract
The invention discloses an Ethernet nonsymmetrical data transmitting system and method. With the help of a network card structure nonsymmetrical data transmitting system which can automatically switch transmitting modes and by using this system to change symmetry of Ethernet data transmission, it forms a nonsymmetrical data transmitting mechanism and further increases band width of Ethernet data transmission.
Description
Technical field
The present invention is relevant for a kind of network data transmission system, particularly relevant for a kind of asymmetric data transmission system of Ethernet.
Background technology
Along with the fast development of science and technology, network has become the indispensable important media of information transmission in the modern society.In the network of various different scales, LAN is because scope is less, can using character higher and transmission speed transmission yarn faster, and its equipment needed thereby is also more cheap, therefore widely general enterprise even individual adopt.The most general LAN technology is Ethernet (Ethernet) at present, and the important document of an Ethernet has comprised Ethernet card (Ethernet card) and network access device, and wherein connection device uses the different cable of many kinds (cable) form.Its transfer of data of known Ethernet have the symmetry characteristic, its meaning be for data be to utilize identical utilized bandwidth in the process of uploading and downloading.Yet, during the network actual operation, it often is asymmetric uploading the volume of transmitted data of direction and the volume of transmitted data of download directions, therefore the symmetry characteristic of Ethernet often makes the transmission direction that needs big utilized bandwidth make transmission speed slow because of bandwidth is not enough, easily causes network congestion when serious; Otherwise the idle phenomenon of bandwidth then takes place in required utilized bandwidth less transmission direction easily.
Consult shown in Figure 1, it is traditional Ethernet network card 100, this legacy network card 100 comprises: Coordination module 110, this Coordination module 110 is in order to coordinate the package form that uses when the transfer of data with the purpose network equipment, for example, content comprises IP (Internet Protocol) the package form of the address relevant information of purpose network equipment; Modular converter 120, this modular converter 120 carries out conversion (be institute such as computer handle data and network transmit conversion between the package) between data and package in order to the package form of coordinating according to Coordination module 110; Transmission/receiver module 130, this transmission/receiver module 130 have in order to the transfer assembly 130A that transmits package and in order to receive the receiving unit 130B of package.With transfer assembly 130A is example, and its main task is about to the package that modular converter 120 converted and sends out.The grid line setting state of transfer assembly 130A and receiving unit 130B all is unidirectional state, and just, the package direction of transfer in the grid line on being connected in transfer assembly 130A is towards purpose network equipment 140A (another has the device of network card); Package direction of transfer in the grid line on being connected in receiving unit 130B then for towards network card 100 (or says the slot 140B that is positioned at towards network card 100 also so that enter central processing unit or the like).Because each bar grid line has identical line bandwidth, therefore package all is under the situation of one-way transmission in above-mentioned two grid lines that are connected on transfer assembly 130A and the receiving unit 130B, carry out uploading and downloading of data with identical line bandwidth during network card 100 transmission data, this kind is the transfer of data symmetry characteristic of Ethernet with the data transmission mechanism of same line bandwidth for transmission data.Yet the data traffic of uploading direction and download directions during the network real work often is asymmetric; For example the use of most of personal computers all is to focus on to download but not upload, therefore in order to the use amount of the grid line of data download usually obviously greater than use amount in order to the grid line of uploading data.Therefore, above-mentioned symmetry characteristic often causes the transmission direction that needs big utilized bandwidth on the Ethernet not enough congested because of spendable line bandwidth; The transmission direction of the less utilized bandwidth of need then has unnecessary line bandwidth and leaves unused.In view of this, the invention provides a kind of asymmetric Ethernet data transmission system to solve above-mentioned allocated bandwidth problem improperly.
Summary of the invention
In view of above-mentioned background of invention, has the more demand of high-transmission efficient in order to satisfy industry for existing network, the invention provides a kind of new asymmetrical network data transmission system, distribute shortcoming improperly so that under the prerequisite of the existing framework of not obvious change, improve the use transmission bandwidth that symmetry characteristic caused of Ethernet, then not only data transmission efficiency can be significantly promoted, and considerable economic can be reached.
The invention provides a kind of asymmetrical network data transmission system, the present invention is by new network card design architecture asymmetric data transmission system, and utilize symmetry characteristic that this data transmission system changes transfer of data on Ethernet so that transfer of data has asymmetry, the utilized bandwidth when the asymmetrical data transmission mechanism of this kind can significantly increase the network actual operation.Because ＂ bandwidth ＂ two words also be the term of the description network transmission speed generally used always, for example, the transmission rate of Ethernet usually at 10Mbps between the 1000Mbps, the bandwidth that also can claim Ethernet at 10Mbps between the 1000Mbps; Therefore, obscure for avoiding causing, herein will with ＂ line bandwidth ＂ describe Network Transmission media per second the energy transmitted data amount (bps of unit; Bit per second) the upper limit, just above-mentioned network transmission speed bandwidth, and the transmission bandwidth that the transfer of data reality of work uses in the data transmission system provided by the present invention is described with ＂ utilized bandwidth ＂; On the other hand, so-called herein ＂ asymmetry ＂ promptly refers to above-mentioned utilized bandwidth.Simultaneously, the present invention only needs to design at existing network card, then do not need any modification for other software and hardware specification in the network architecture, therefore the present invention still can be compatible with in the existing network communication protocol, for example, when the transmission standard 802.3 of use network, can only need to revise interface routine code Link_Control_[HCD in the network card then provided by the present invention] (see the IEEE handbook for details, Figure 28-16), need the package form of use and the mechanism of package transmission then can need not change according to existing mode fully.In addition, the required wire rod of network data transmission does not need any change yet, yet it should be noted the characteristic that must have transmitted in both directions for wire rod itself, and just wire rod must not had a directivity; For example, the copper twisted pair (twistedpair) that generally uses is as Cat 5 at present, and it has the characteristic of transmitted in both directions, so can be applicable in the data transmission system provided by the present invention; Optical fiber wire rod (optical fiber) then because of having directivity, can't carry out transmitted in both directions, therefore can't be applied in the data transmission system provided by the present invention.In sum, the present invention can with least cost reach significantly increase data transmission efficiency purpose to meet the demand of industry.
Technical scheme of the present invention is:
A kind of Ethernet card with automatic switchover transmission mode function, this Ethernet card with automatic switchover transmission mode function comprises:
Detecting module, this detecting module are detected the on-line environment of arbitrary time to produce the detecting result;
Judgement/handover module, this judgement/handover module determines the grid line setting state according to this detecting result that this detecting module produced:
At this, when this judgement/handover module judged that this detecting result uses the transmitted in both directions pattern for this on-line environment is essential, this judgements/handover module fill order was to the changeover program of/bilateral network line states setting; And when this judgement/handover module judged that this detecting result does not need to use the transmitted in both directions pattern for this on-line environment, this judgement/handover module was not carried out the changeover program of this one-way/two-way grid line state;
Above-mentioned judgement/handover module judges whether this detecting result must use the standard of transmitted in both directions pattern to be selected from following a kind of or its any combination for this on-line environment:
The transmission quantity that is received when this Ethernet card is greatly to making that the grid line that this Ethernet card is used for receiving is fully loaded;
The transmission quantity that is received when this Ethernet card is greatly to making the use amount of the grid line that this Ethernet card is used for receiving surpass certain proportion;
The transmission quantity that is transmitted when this Ethernet card is greatly to making that the grid line that this Ethernet card is used for transmitting is fully loaded;
The transmission quantity that is transmitted when this Ethernet card is greatly to making the use amount of the grid line that this Ethernet card is used for transmitting surpass certain proportion;
Wherein, this certain proportion is adjustable parameter, and can be independent of certain proportion in order to this grid line that receives in order to the certain proportion of this grid line of transmitting.
A kind of Ethernet card with automatic switchover transmission mode function, this network card also includes:
Coordination module, this Coordination module and purpose network equipment are coordinated and required package form during decision transmission data;
Modular converter, this modular converter carries out conversion between data and package according to this package form that this Coordination module determined;
This grid line setting state that transmission/receiver module, this transmission/receiver module utilize this judgement/handover module to determine transmits and receives package.
A kind of Ethernet card with automatic switchover transmission mode function, described transmission/receiver module comprises transfer assembly simultaneously, and the function of this transfer assembly is selected from one of following or its any combination:
When not carrying out the changeover program of this one-way/two-way grid line setting state, this judgement/handover module can not transmit package;
When carrying out the changeover program of this one-way/two-way network wire setting attitude, this judgement/handover module can transmit and receive package;
When carrying out the changeover program of this one-way/two-way grid line setting state, this judgement/handover module can receive package.
A kind of Ethernet card with automatic switchover transmission mode function, described transmission/receiver module comprises receiving unit simultaneously, and the function of this receiving unit is selected from one of following or its any combination:
When not carrying out the changeover program of this one-way/two-way grid line setting state, this judgement/handover module can not receive package;
When carrying out the changeover program of this one-way/two-way grid line setting state, this judgement/handover module can receive and transmit package;
When carrying out the changeover program of this one-way/two-way grid line setting state, this judgement/handover module can transmit package.
A kind of network data transmission method, this network data transmission method comprises:
Required package form when carrying out coordinator with decision transmission data;
Carry out conversion program to carry out the conversion between data and package according to this package form;
Carry out detection process with detecting on-line environment and generation detecting result;
The result determines the grid line setting state according to this detecting, wherein determine the mode of this grid line setting state to comprise to judge this detecting result to use the transmitted in both directions pattern, and determine fill order whether in view of the above to/changeover program that the bilateral network line states is set for this on-line environment is whether essential;
Describedly judge whether this detecting result must use the standard of transmitted in both directions pattern for this on-line environment and be selected from one of following or its any combination:
When the transmission quantity that receives is fully loaded with to the feasible grid line that is used for receiving greatly;
When the transmission quantity that receives surpasses certain proportion to the use amount of the feasible grid line that is used for receiving greatly;
When the transmission quantity that transmits is fully loaded with to the feasible grid line that is used for transmitting greatly;
When the transmission quantity that transmits surpasses certain proportion to the use amount of the feasible grid line that is used for transmitting greatly;
Wherein, this certain proportion is an adjustable parameters, and the certain proportion of transmission usefulness can be independent of the certain proportion that receives usefulness.
A kind of network data transmission method, when described detecting result uses the transmitted in both directions pattern for this on-line environment is essential, then carry out this changeover program and set the transmitted in both directions state for, and transmit and the reception package with the grid line setting state of this transmitted in both directions state with the handover network line states.
A kind of network data transmission method, described detecting result is this on-line environment when not needing to use the transmitted in both directions pattern, does not then carry out this changeover program and transmits and receive package with former grid line setting state that should one-way transmission.
A kind of network data transmission system, this network data transmission system comprises:
First network equipment, this first network equipment comprises the Ethernet card with automatic switchover transmission mode function;
Second network equipment;
Wherein, the relation of described first network equipment and second network equipment is selected from one of following or its combination:
When this second network equipment also comprised this Ethernet card with automatic switchover transmission mode function, then this first and second network equipment can flexibly transmit package with asymmetric utilized bandwidth by this Ethernet card with automatic switchover transmission mode function mutually;
When this second network equipment did not comprise this Ethernet card with automatic switchover transmission mode function, then this first and second network equipment can be mutually with symmetrical utilized bandwidth transmission package.
A kind of network data transmission system, described Ethernet card with automatic switchover transmission mode comprises:
Detecting module, this detecting module are detected the on-line environment of arbitrary time to produce the detecting result;
Judgement/handover module, this judgement/handover module determines the grid line setting state according to this detecting result that this detecting module produced:
At this, when this judgement/handover module judged that this detecting result uses the transmitted in both directions pattern for this on-line environment is essential, this judgements/handover module fill order was to the changeover program of/bilateral network line states setting; And when this judgement/handover module judged that this detecting result does not need to use the transmitted in both directions pattern for this on-line environment, this judgement/handover module was not carried out the changeover program of this one-way/two-way grid line state;
Coordination module, this Coordination module and purpose network equipment are coordinated and required package form during decision transmission data;
Modular converter, this modular converter carries out conversion between data and package according to this package form that this Coordination module determined;
This grid line setting state that transmission/receiver module, this transmission/receiver module utilize this judgement/handover module to determine transmits and receives package;
Above-mentioned judgement/handover module judges whether this detecting result must use the standard of transmitted in both directions pattern for this on-line environment and be selected from one of following or its any combination:
The transmission quantity that is received when this Ethernet card is greatly to making that the grid line that this Ethernet card is used for receiving is fully loaded:
The transmission quantity that is received when this Ethernet card is greatly to making the use amount of the grid line that this Ethernet card is used for receiving surpass certain proportion;
The transmission quantity that is transmitted when this Ethernet card is greatly to making that the grid line that this Ethernet card is used for transmitting is fully loaded:
The transmission quantity that is transmitted when this Ethernet card is greatly to making the use amount of the grid line that this Ethernet card is used for transmitting surpass certain proportion;
Wherein, this certain proportion is adjustable parameter, and can be independent of certain proportion in order to this grid line that receives in order to the certain proportion of this grid line of transmitting.
A kind of network data transmission system, described transmission/receiver module comprises transfer assembly simultaneously, and the function of this transfer assembly is selected from one of following or its any combination:
When not carrying out the changeover program of this one-way/two-way grid line state, this judgement/handover module can not transmit package;
When carrying out the changeover program of this one-way/two-way grid line state, this judgement/handover module can transmit and receive package;
When carrying out the changeover program of this one-way/two-way grid line state, this judgement/handover module can receive package;
Described transmission/receiver module comprises receiving unit simultaneously, and the function of this receiving unit is selected from one of following or its any combination:
When not carrying out the changeover program of this one-way/two-way grid line state, this judgement/handover module can not receive package;
When carrying out the changeover program of this one-way/two-way grid line state, this judgement/handover module can receive and transmit package;
When carrying out the changeover program of this one-way/two-way grid line state, this judgement/handover module can transmit package.
According to above discussion, the invention discloses a kind of network card with one-way/two-way grid line state switching performance, it comprises in order to coordinate the Coordination module of the package form that uses when the transfer of data with the purpose network equipment; Carry out the modular converter of the conversion between data and package in order to the package form of coordinating according to Coordination module; In order to detecting on-line environment () detecting module for example: offered load amount, online speed, and whether the network card of purpose network equipment has one-way/two-way grid line state switching performance etc.; In order to the result that detects according to detecting module decision whether coordinate with the purpose network equipment and the fill order to/judgement/handover module that the bilateral network line states is switched, and transmission/receiver module; Wherein, transmission/receiver module comprises transfer assembly and receiving unit.Network card provided by the present invention can by above-mentioned judgement/handover module and purpose network equipment coordinate with at above-mentioned transfer assembly and receiving unit fill order to/bilateral network line states switching, use and reach at least a in the following behavior: the first, make to be connected in the grid line on the transfer assembly package direction of transfer by being converted to simultaneously towards purpose network equipment and network equipment own towards the purpose network equipment fully, or fully towards network equipment own; The second, make and to be connected in the grid line on the receiving unit package direction of transfer by being converted to simultaneously towards network equipment own and purpose network equipment towards network equipment own fully, or fully towards the purpose network equipment.The present invention is by the switching and the combo architectures asymmetric data transmission system of heterogeneous networks line states in transfer assembly and the receiving unit, the difference of its visible network user mode, particularly look the difference of two grid lines status transmission separately that is connected to same network card, adjust the mode that network card uses these two grid lines, and use to reach and utilize the utilized bandwidth that is fit to carry out the purpose of transfer of data, make the transmission of Ethernet data have asymmetry.
The present invention also discloses a kind of changing method of one-way/two-way network data transmission mechanism.At first, coordinate the package form that uses when the transfer of data with the purpose network equipment.Subsequently, detecting on-line environment such as offered load amount, online speed, and whether the network card of purpose network equipment have one-way/two-way grid line state switching performance etc., and whether activate the switching of one-way/two-way grid line setting state according to above-mentioned detecting result decision.When the result of detecting has approached line bandwidth for the utilized bandwidth of certain bar grid line but the line bandwidth of another grid line when also having suitable ratio not to be used, then optionally switch to/bilateral network line states at transmitting with the receiving unit fill order.With the transfer assembly is example, and switching to by delivery status of its grid line setting state switches to transmission/accepting state or switch to accepting state by delivery status.Subsequently, carry out transfer of data work with this grid line setting state.Relatively, if the result of detecting is the line bandwidth of two grid lines when all also having suitable ratio not to be used, then directly carry out transfer of data work with former grid line setting state.Certainly, the utilized bandwidth that the result of above-mentioned detecting can be revised as certain bar grid line has surpassed first ratio of line bandwidth, but when the line bandwidth of another grid line also has suitable ratio not to be used.
Description of drawings
Fig. 1 is the schematic block diagram of legacy network card;
Fig. 2 A is the schematic block diagram that has the network card of the changeable transmission mode of one-way/two-way in the embodiment of the invention 1;
Fig. 2 B is the data transmission method flow chart of steps in the embodiment of the invention 1;
Fig. 2 C is the method step flow chart of the modus operandi of grid line state changeover program in the embodiment of the invention 1;
Fig. 3 A is a network data transmission system schematic block diagram in the embodiment of the invention 2;
Fig. 3 B is a network data transmission system schematic block diagram in the embodiment of the invention 3;
Fig. 4 is a network data transmission system schematic block diagram in the embodiment of the invention 4
[main conventional letter]
100 network cards, 110 Coordination module
120 modular converters, 130 transmission/receiver modules
130 transfer assembly 130B receiving units
140A purpose network equipment 140B slot
200 network cards, 210 Coordination module
220 modular converters, 230 transmission/receiver modules
230A transfer assembly 230B receiving unit
240 detecting modules, 250 judgement/handover modules
260 transmit data to network card 270 becomes required package with data transaction
280 detecting network behaviour in service 280A judge whether to activate the transmitted in both directions pattern
280B handover network line states is set 281 initial steps
282 grid line states are coordinated step 283 grid line state switch step
290 transmission data, 300 network data transmission systems
310 network equipments, 320 network equipments
311 network cards, 321 network cards
311A transfer assembly 311B receiving unit
321A transfer assembly 321B receiving unit
330 grid lines, 340 grid lines
350 network data transmission systems, 360 network equipments
361 network card 361A transfer assemblies
361B receiving unit 370 network equipments
371 network card 371A transfer assemblies
371B receiving unit 380 grid lines
390 grid lines, 400 network data transmission systems
410 network equipments, 420 network equipments
411 network card 411A transfer assemblies
411B receiving unit 421 network cards
421A transfer assembly 421B receiving unit
430 grid lines, 440 grid lines
Embodiment
In order to understand the present invention up hill and dale, detailed construction package or step will be proposed in following description.Apparently, execution of the present invention is not defined in the specific details that skill person had the knack of of haveing the knack of Ethernet; On the other hand, well-known assembly is not described in detail especially, with the restriction of avoiding causing the present invention unnecessary.Preferred embodiment meeting of the present invention is described in detail as follows, yet except these detailed descriptions, the present invention also can implement in other embodiments widely, and scope of the present invention do not limited, its with after claim be as the criterion.
Embodiment 1
Shown in Fig. 2 A, network card 200 with changeable one-way/two-way transmission mode function at first is provided, network card 200 comprises: employed particular packet form when Coordination module 210, Coordination module 210 are coordinated in transfer of data with the purpose network equipment before the transmission data; Modular converter 220, the particular packet form that modular converter 220 is coordinated according to Coordination module 210 carries out the conversion between data and package; Detecting module 240, detecting module 240 is in order to detecting on-line environment such as offered load amount, online speed, and whether the network card of purpose network equipment has one-way/two-way grid line state switching performance etc.; Judgement/handover module 250, whether judgement/handover module 250 is coordinated to switch to/bilateral network line states with the fill order with the purpose network equipment in order to the result that detected according to detecting module 240 decision; Transmission/receiver module 230, transmission/receiver module 230 comprise in order to the transfer assembly 230A that transmits package and in order to receive the receiving unit 230B of package.Network card 200 provided by the present invention can be coordinated flexibly to set and to switch, and to make transfer assembly 230A and receiving unit 230B can utilize different utilized bandwidths to transmit and the reception data to/bilateral network line states at above-mentioned transfer assembly 230A and receiving unit 230B fill order by above-mentioned judgement/handover module 250 and purpose network equipment.For instance, when the transmission quantity of receiving unit 230B or transfer assembly 230A greatly to making that fully loaded (or use amount has surpassed certain proportion to the grid line that is connected to receiving unit 230B or transfer assembly 230A, for example 50% or 75%, this ratio is adjustable parameter), just can change the running of transfer assembly 230A or receiving unit 230B, make the grid line be connected to transfer assembly 230A also be used to receive (even receive only and do not transmit) and the grid line that is connected to receiving unit 230B also is used to transmit (even only transmit and do not receive).Thus, the present invention can change the symmetry characteristic of Ethernet transfer of data, and makes network data transmission tool asymmetry.
Shown in Fig. 2 B, in the present embodiment, it is the flow chart of steps of the network data transmission mechanism of changeable one-way/two-way grid line setting state.At first, carry out step 260 to coordinate the particular packet form that uses when the transfer of data with the purpose network equipment.Then, carry out step 270 and carry out conversion between data and package with the particular packet form of being coordinated according to step 260.Afterwards, carry out step 280 with detecting on-line environment such as offered load amount, online speed, and whether the network card of purpose network equipment has one-way/two-way grid line state switching performance etc.Subsequently, carry out step 280A to judge whether to activate the transmitted in both directions pattern; If for being, then carry out step 280B, for example, switch to transmission/accepting state or switch to accepting state by delivery status by delivery status so that the handover network line states is set; If, then carry out step 290 so that by former grid line setting state transmission data for not.At this, whether activate the standard of transmitted in both directions pattern, depend on basically whether two grid lines that are connected to this network equipment one use amount big (even fully loaded) occurs and another use amount little (even idle); Such situation takes place if having, just activate the transmitted in both directions pattern, otherwise, then do not activate.In addition, the detailed step flow chart of above-mentioned steps 280B is shown in Fig. 2 C: at first, carry out initial step 281 so that begin coordination-switch operating flow process; Then, carry out that the grid line state is coordinated step 282 so that coordinate the grid line state that desire is used when the transfer of data with the purpose network equipment; At last, carry out grid line state switch step 283 with the grid line state fill order that coordinated according to step 282 to/bilateral network line states switch operating.Certainly, it must be emphasized that at this present embodiment is to set out with regard to the angle that computer will transfer data to network, just mentions step 280-290 then again so just mention step 260-270 earlier; If but purely with regard to the angle that view network situation of the present invention is selected use transmitted in both directions pattern, step 260-270 is not an essential step of the present invention, for instance, the present invention receives package under fully loaded situation one the tunnel, and the grid line that is used for transmitting package is originally specially also brought grid line as the reception package.
Embodiment 2
As shown in Figure 3A, it is a network data transmission system 300, network data transmission system 300 comprises a plurality of network equipments 310/320, wherein, any network equipment 310/320 can be personal computer (personal computer), server (server), switch (switch) or hub (hub).Because network equipment 310/320 is a known assemblies, so seldom give discussion at this.Above-mentioned network equipment 310 comprises the network card 311 with changeable one-way/two-way grid line status function, and this network card 311 has transfer assembly 311A and receiving unit 311B; Network equipment 320 comprises the network card 321 with changeable one-way/two-way grid line status function, this network card 321 has transfer assembly 321A and receiving unit 321B, wherein, transfer assembly 311A is by grid line 330 and the mutual electrical couplings of receiving unit 321B, so that package can transmit between transfer assembly 311A and receiving unit 321B; Transfer assembly 321A is by grid line 340 and the mutual electrical couplings of receiving unit 311B, so that package can transmit between transfer assembly 321A and receiving unit 311B.
As shown in Figure 3A, in the present embodiment, network card 311/321 with changeable one-way/two-way grid line status function is equivalent to the network card 100 described in first embodiment in fact, and just, network card 311/321 all has the function of changeable one-way/two-way grid line setting state.In the present embodiment, network card 311/321 is coordinated so that the grid line setting state of transfer assembly 311A is switched to transmission/accepting state and the grid line setting state of receiving unit 321B is switched to reception/delivery status by accepting state by delivery status, make transfer assembly 311A transmitting package in receiving unit 321B, also receive package from receiving unit 321B.As a whole, in the network data transmission system 300, the utilized bandwidth when package transfers to network equipment 310 by network equipment 320 is the line bandwidth of overall network line 340 and the line bandwidth of subnetwork line 330; Utilized bandwidth when package transfers to network equipment 320 by network equipment 310 then only is the line bandwidth of subnetwork line 330.Therefore, utilized bandwidth when the utilized bandwidth of network data transmission system 300 when package passes to network equipment 310 by network equipment 320 passes to network equipment 320 greater than package by network equipment 310, just, network data transmission system 300 carries out the transfer of data of this two direction with asymmetrical utilized bandwidth.As seen from the above description, when pass to the package amount of network equipment 310 during by network equipment 320 greater than package amount from network equipment 310 to network equipment 320 that pass by, network data transmission system 300 provided by the present invention can provide more appropriate utilized bandwidth to distribute by more traditional Ethernet, can avoid thus because the utilized bandwidth that symmetry characteristic caused of traditional ethernet network transfer of data is distributed shortcoming improperly.In addition, apprehensible as those skilled in the art institute, when being passed by network equipment 310 when the package amount of network equipment 320 passes package amount to network equipment 310 greater than network equipment 320, network data transmission system 300 also can carry out transfer of data work to utilize better suited utilized bandwidth to distribute by still rightabout data transmission mechanism as mentioned above.
Embodiment 3
Shown in Fig. 3 B, it is a network data transmission system 350, network data transmission system 350 comprises a plurality of network equipments 360/370, wherein, any network equipment 360/370 can be personal computer (personal computer), server (server), switch (switch) or hub (hub).Because network equipment 360/370 is a known assemblies, so seldom give discussion at this.Above-mentioned network equipment 360 comprises the network card 361 with changeable one-way/two-way grid line status function, and this network card 361 has transfer assembly 361A and receiving unit 361B; Network equipment 370 comprises the network card 371 with changeable one-way/two-way grid line status function, this network card 371 has transfer assembly 371A and receiving unit 371B, wherein, transfer assembly 361A is by grid line 380 and the mutual electrical couplings of receiving unit 371B, so that package can transmit between transfer assembly 361A and receiving unit 371B; Transfer assembly 371A is by grid line 390 and the mutual electrical couplings of receiving unit 361B, so that package can transmit between transfer assembly 371A and receiving unit 361B.
Shown in Fig. 3 B, in the present embodiment, network card 361/371 with changeable one-way/two-way grid line status function is equivalent to the network card 100 described in first embodiment in fact, and just, network card 361/371 all has the function of changeable one-way/two-way grid line setting state.In the present embodiment, network card 361/371 is coordinated to be entirely by receiving unit 371B biography to transfer assembly 361A with the package direction of transfer that the grid line setting state of transfer assembly 361A is switched to accepting state and the grid line setting state of receiving unit 371B is switched to delivery status by accepting state by delivery status, make in the grid line 380 that connects transfer assembly 361A and receiving unit 371B.As a whole, then the data transfer direction in the network data transmission system 350 this moment also is entirely by network equipment 370 and passes to network equipment 360, and the utilized bandwidth of network data transmission system 350 is the line bandwidth of overall network line 380 and 390.As seen from the above description, when the direction of the transfer of data work carried out of desire only for by network equipment 370 during towards network equipment 360, network data transmission system 350 provided by the present invention can provide bigger utilized bandwidth by more traditional Ethernet, and the theoretical maximum multiplication factor of this utilized bandwidth is 2 times.In addition, apprehensible as those skilled in the art institute, when the direction of the transfer of data work carried out of desire only for by network equipment 360 during towards network equipment 370, network data transmission system 350 provided by the present invention also can carry out transfer of data work to utilize bigger utilized bandwidth by still rightabout data transmission mechanism as mentioned above.
Embodiment 4
Consult shown in Figure 4, it is the network data transmission system 400 of the 4th embodiment institute construction one of according to the present invention, it comprises a plurality of network equipments 410/420, wherein, any network equipment 410/420 can be personal computer (personal computer), server (server), switch (switch) or hub (hub).And network equipment 410/420 is a known assemblies, so seldom give discussion at this.Above-mentioned network equipment 410 comprises the network card 411 of changeable one-way/two-way grid line status function, and this network card 411 has transfer assembly 411A and receiving unit 411B; Above-mentioned network equipment 420 comprises legacy network card 421, this network card 421 has transfer assembly 421A and receiving unit 421B, wherein, transfer assembly 411A is by grid line 430 and the mutual electrical couplings of receiving unit 421B, so that package is sent to receiving unit 421B by transfer assembly 411A, and transfer assembly 421A is by grid line 440 and the mutual electrical couplings of receiving unit 411B, so that package is sent to receiving unit 411B by transfer assembly 421A.
Consult shown in Figure 4, in the present embodiment, network card 411 with changeable one-way/two-way grid line status function is equivalent to the network card 100 described in first embodiment in fact, yet, in the present embodiment, because network card 421 traditional network cards that network equipment 420 comprised and the function of the changeable one-way/two-way grid line of tool state not, so can't cooperate with construction asymmetry data transmission system with the network equipment 410 that comprises network card 411 with changeable one-way/two-way grid line status function, in this kind situation, network card 411 can not switch the grid line setting state of transfer assembly 411A and receiving unit 411B, but cooperates with construction network data transmission system 400 with network equipment 420 by former unilateral network line states setting; Therefore, data transfer direction in the network data transmission system 400 is respectively by transfer assembly 411A and passes to receiving unit 421B via grid line 430, and pass to receiving unit 411B by grid line 440 by transfer assembly 421A, and the utilized bandwidth of this neither equidirectional transfer of data work is respectively the line bandwidth of overall network line 430 and grid line 440, just, network data transmission system 400 carries out transfer of data work with the symmetric data transmission mechanism of tool identical with the traditional ethernet network.Hence one can see that, when the network card of purpose network equipment is a legacy network card and when not having changeable one-way/two-way grid line status function, the network card 411 with changeable one-way/two-way grid line status function provided by the present invention also can normally be carried out transfer of data work.Therefore, network card provided by the present invention can directly be compatible with not to be needed in the existing Ethernet data transmission system existing software and hardware architecture is carried out any modification, thus the present invention can with least cost reach significantly increase data transmission efficiency purpose to meet the demand of industry.
Subsidiary one what carry is that grid line 330 and grid line 340 must have at least one the material can transmitted in both directions, and grid line 380 and grid line 390 also must have at least one the material can transmitted in both directions.Simultaneously, even the network card of two network equipments allows the transmitted in both directions mode, if the material of the grid line between two network equipments does not allow this transmission means (for example when the material of two grid lines all is optical fiber),, network card also can not allow two grid lines carry out the transmission work of package toward same network equipments simultaneously even if activating the transmitted in both directions function.
As mentioned above, the present invention is by a kind of new network card framework asymmetric data transmission system, and utilize symmetrical transmission characteristic that this asymmetric data transmission system changes data on Ethernet, and then the utilized bandwidth when increasing the network actual operation so that transfer of data has asymmetry.
Apparently, according to the description among the above embodiment, the present invention has many corrections and difference, therefore need be understood in the scope of its additional claim item, except above-mentioned detailed description, the present invention can also implement widely in other embodiments.Above-mentioned is preferred embodiment of the present invention only, is not in order to limiting claim of the present invention, and all other do not break away from the equivalence of being finished under the disclosed spirit and change or modify, and all should be included in the following claim.
Claims (7)
1, a kind of Ethernet card with automatic switchover transmission mode function is characterized in that, this Ethernet card with automatic switchover transmission mode function comprises:
Detecting module, this detecting module are detected the on-line environment of arbitrary time to produce the detecting result;
Judgement/handover module, this judgement/handover module determines the grid line setting state according to this detecting result that this detecting module produced:
At this, when this judgement/handover module judged that this detecting result uses the transmitted in both directions pattern for this on-line environment is essential, this judgements/handover module fill order was to the changeover program of/bilateral network line states setting; And when this judgement/handover module judged that this detecting result does not need to use the transmitted in both directions pattern for this on-line environment, this judgement/handover module was not carried out the changeover program of this one-way/two-way grid line state;
Above-mentioned judgement/handover module judges whether this detecting result must use the standard of transmitted in both directions pattern to be selected from following a kind of or its any combination for this on-line environment:
The transmission quantity that is received when this Ethernet card is greatly to making that the grid line that this Ethernet card is used for receiving is fully loaded;
The transmission quantity that is received when this Ethernet card is greatly to making the use amount of the grid line that this Ethernet card is used for receiving surpass certain proportion;
The transmission quantity that is transmitted when this Ethernet card is greatly to making that the grid line that this Ethernet card is used for transmitting is fully loaded;
The transmission quantity that is transmitted when this Ethernet card is greatly to making the use amount of the grid line that this Ethernet card is used for transmitting surpass certain proportion;
Wherein, this certain proportion is adjustable parameter, and is independent of certain proportion in order to this grid line that receives in order to the certain proportion of this grid line of transmitting.
2, a kind of Ethernet card with automatic switchover transmission mode function according to claim 1 is characterized in that this network card also includes:
Coordination module, this Coordination module and purpose network equipment are coordinated and required package form during decision transmission data;
Modular converter, this modular converter carries out conversion between data and package according to this package form that this Coordination module determined;
This grid line setting state that transmission/receiver module, this transmission/receiver module utilize this judgement/handover module to determine transmits and receives package.
3, a kind of Ethernet card with automatic switchover transmission mode function according to claim 2 is characterized in that described transmission/receiver module comprises transfer assembly simultaneously, and the function of this transfer assembly is selected from one of following or its any combination:
When not carrying out the changeover program of this one-way/two-way grid line setting state, transmits this judgement/handover module package;
When carrying out the changeover program of this one-way/two-way network wire setting attitude, this judgement/handover module transmits and receives package;
When carrying out the changeover program of this one-way/two-way grid line setting state, this judgement/handover module receives package.
4, a kind of Ethernet card with automatic switchover transmission mode function according to claim 2 is characterized in that described transmission/receiver module comprises receiving unit simultaneously, and the function of this receiving unit is selected from one of following or its any combination:
When not carrying out the changeover program of this one-way/two-way grid line setting state, this judgement/handover module receives package;
When carrying out the changeover program of this one-way/two-way grid line setting state, this judgement/handover module receives and transmits package;
When carrying out the changeover program of this one-way/two-way grid line setting state, transmits this judgement/handover module package.
5, a kind of network data transmission method is characterized in that, this network data transmission method comprises:
Required package form when carrying out coordinator with decision transmission data;
Carry out conversion program to carry out the conversion between data and package according to this package form;
Carry out detection process with detecting on-line environment and generation detecting result;
The result determines the grid line setting state according to this detecting, wherein determine the mode of this grid line setting state to comprise to judge this detecting result to use the transmitted in both directions pattern, and determine fill order whether in view of the above to/changeover program that the bilateral network line states is set for this on-line environment is whether essential;
Describedly judge whether this detecting result must use the standard of transmitted in both directions pattern for this on-line environment and be selected from one of following or its any combination:
When the transmission quantity that receives is fully loaded with to the feasible grid line that is used for receiving greatly;
When the transmission quantity that receives surpasses certain proportion to the use amount of the feasible grid line that is used for receiving greatly;
When the transmission quantity that transmits is fully loaded with to the feasible grid line that is used for transmitting greatly;
When the transmission quantity that transmits surpasses certain proportion to the use amount of the feasible grid line that is used for transmitting greatly;
Wherein, this certain proportion is an adjustable parameters, and the certain proportion of transmission usefulness is independent of the certain proportion that receives usefulness.
6, a kind of network data transmission method according to claim 5, it is characterized in that, when described detecting result uses the transmitted in both directions pattern for this on-line environment is essential, then carry out this changeover program and set the transmitted in both directions state for, and transmit and the reception package with the grid line setting state of this transmitted in both directions state with the handover network line states.
7, a kind of network data transmission method according to claim 5, it is characterized in that, described detecting result is this on-line environment when not needing to use the transmitted in both directions pattern, does not then carry out this changeover program and transmits and receive package with former grid line setting state that should one-way transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101133500A CN100490406C (en) | 2003-11-12 | 2003-11-12 | Asymmetric Ethernet data transmission system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101133500A CN100490406C (en) | 2003-11-12 | 2003-11-12 | Asymmetric Ethernet data transmission system and method |
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| CN1545264A CN1545264A (en) | 2004-11-10 |
| CN100490406C true CN100490406C (en) | 2009-05-20 |
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| CNB2003101133500A Expired - Lifetime CN100490406C (en) | 2003-11-12 | 2003-11-12 | Asymmetric Ethernet data transmission system and method |
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| CN104123247B (en) * | 2013-04-27 | 2017-08-29 | 华邦电子股份有限公司 | The access mode system of selection of interface circuit and serial interface memory |
| CN103699504B (en) * | 2013-12-30 | 2018-10-30 | 龙芯中科技术有限公司 | DDR physical layer data processing methods, device and DDR physical layers |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001177856A (en) * | 1999-12-20 | 2001-06-29 | Matsushita Electric Ind Co Ltd | Private branch exchange |
| WO2003056775A1 (en) * | 2001-12-30 | 2003-07-10 | Legend (Beijing) Limited. | A means and control method for adapting different media of transmission link of network on physical layer. |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001177856A (en) * | 1999-12-20 | 2001-06-29 | Matsushita Electric Ind Co Ltd | Private branch exchange |
| WO2003056775A1 (en) * | 2001-12-30 | 2003-07-10 | Legend (Beijing) Limited. | A means and control method for adapting different media of transmission link of network on physical layer. |
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