CN101841480A - Multilink message sending method, equipment and system - Google Patents
Multilink message sending method, equipment and system Download PDFInfo
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Abstract
The invention provides multilink message sending method, equipment and system. The method comprises the following steps of: computing time delay differences among different PPP (Point-to-Point Protocol) links involved in MP (Multi-Link PPP); acquiring a message slicing time delay request set in an MP receiving terminal; grouping different PPP links according to the message slicing time delay request and the computed time delay differences among the links so as to divide and generate at least one MP subgroup, wherein the time delay difference between any two PPP links involved in each MP subgroup meets the message slicing time delay request; and selecting at least one MP subgroup for a message to be sent from the MP subgroups for sending. By the embodiment of the invention, all the PPP links of MP are grouped so that the message can be sent in each MP subgroup without causing the failure of message slice recombination function because the time delay differences among different PPP links exceed the time delay request of the receiving terminal, which improves the transmission performance of MP and increase the safety and the reliability of message transmission in MP.
Description
Technical field
The embodiment of the invention relates to communication technical field, relates in particular to a kind of multilink message sending method, equipment and system.
Background technology
Point-to-point multi-link protocol (Multi-Link PPP, be called for short MP) be a kind of with the mode of physical channel by the agreement binding, according to standard agreement RFC1990, add corresponding sequence number, a plurality of physical channels are bundled into a logical channel, satisfy the technology of user bandwidth demand so that the bandwidth bigger than single physical passage to be provided.
In the implementation procedure of MP, because simultaneously corresponding many point-to-point protocol (Pointto Point Protocol of same MP, be called for short PPP) link, therefore when the data message that need transmit when the MP transmitting terminal is excessive, usually can adopt the message fragment recombination function of MP, with the form of big data message with burst, send to receiving terminal by different ppp links, to accelerate the transmission rate of data message, and after receiving terminal receives all bursts, all bursts that receive are recombinated, just can recover to obtain complete message again.
Though the message fragment recombination function has been accelerated the transmission rate of message, also caused simultaneously certain drawback: corresponding different ppp links, owing to networking construction or otherwise reason, its message transmission rate may there are differences, thereby may cause each burst when different ppp links is sent to the MP receiving terminal, because the time of advent inconsistent produces certain delay inequality to each other.And for the MP receiving terminal, based on reasons such as number of links specification, hardware designs, be provided with certain delay requirement, if when surpassing this delay requirement between the different bursts of same message, the MP receiving terminal will abandon all bursts of this message, thereby cause losing of message.
Summary of the invention
The embodiment of the invention provides a kind of multilink message sending method, equipment and system, and in order to solve MP when sending datagram, the message fragment recombination function of appearance lost efficacy, the problem of message dropping.
For achieving the above object, the embodiment of the invention provides a kind of multilink message sending method, comprising:
Calculate delay inequality between the link between the different point-to-point protocol ppp links that point-to-point multi-link protocol MP comprises;
Obtain the message fragment delay requirement that the MP receiving terminal is provided with;
According to delay inequality between described message fragment delay requirement and the described link that calculates, described different ppp links are divided into groups, generate at least one MP group to divide, the delay inequality between any two ppp links that comprise in each described MP group all satisfies described message fragment delay requirement;
Selecting at least one MP group for message to be sent from described MP group sends.
For achieving the above object, the embodiment of the invention also provides a kind of multi-link messages transmitting apparatus, comprising:
The delay inequality computing module is used to calculate delay inequality between the link between the different point-to-point protocol ppp links that comprise in the point-to-point multi-link protocol MP;
Acquisition module is used to obtain the message fragment delay requirement that the MP receiving terminal is provided with;
Grouping module, be used for according to delay inequality between described message fragment delay requirement and the described link that calculates, described different ppp links are divided into groups, generate at least one MP group to divide, the delay inequality between any two ppp links that comprise in each described MP group all satisfies described message fragment delay requirement;
The message sending module is used for selecting at least one MP group from described MP group for message to be sent and sends.
For achieving the above object, the embodiment of the invention also provides a kind of multi-link messages transmitting system, comprising: multi-link messages transmitting apparatus, and the multi-link messages receiving equipment that is connected with described multi-link messages transmitting apparatus, wherein,
Delay inequality between the link between the different point-to-point protocol ppp links that described multi-link messages transmitting apparatus is used for comprising in calculating point-to-point multi-link protocol MP, and after acquiring the message fragment delay requirement of described multi-link messages receiving equipment setting, according to delay inequality between described message fragment delay requirement and the described link that calculates, described different ppp links are divided into groups, generate at least one MP group to divide, and be that message to be sent selects at least one MP group to send from described MP group, the delay inequality between any two ppp links that comprise in each described MP group all satisfies described message fragment delay requirement;
Described multi-link messages receiving equipment is used to send described message fragment delay requirement to described multi-link messages transmitting apparatus, and receives the message described to be sent that the MP group of described multi-link messages transmitting apparatus through selecting sends.
The multilink message sending method of the embodiment of the invention, equipment and system, by obtain the delay requirement that the MP receiving terminal is provided with at message fragment by the MP transmitting terminal, and after the delay inequality between each ppp link calculated, according to delay inequality between delay requirement that gets access to and the link that calculates, all ppp links of correspondence are divided into a plurality of MP groups, delay inequality in each MP group between any ppp link of correspondence all satisfies the delay requirement that receiving terminal is provided with, thereby make when same message transmits in independent MP group, can not occur exceeding the delay requirement of receiving terminal because of delay inequality between different ppp links, and the receiving terminal dropping packets burst that causes, the phenomenon of inefficacy of message fragment recombination function and message dropping, improve the transmission performance of MP, improved the security reliability of message transmissions among the MP.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The flow chart of a kind of multilink message sending method that Fig. 1 provides for the embodiment of the invention;
The flow chart of the another kind of multilink message sending method that Fig. 2 provides for the embodiment of the invention;
The structural representation of a kind of multi-link messages transmitting apparatus that Fig. 3 provides for the embodiment of the invention;
The structural representation of the another kind of multi-link messages transmitting apparatus that Fig. 4 provides for the embodiment of the invention;
The structural representation of another multi-link messages transmitting apparatus that Fig. 5 provides for the embodiment of the invention;
The structural representation of a kind of multi-link messages transmitting system that Fig. 6 provides for the embodiment of the invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The flow chart of a kind of multilink message sending method that Fig. 1 provides for the embodiment of the invention, as shown in Figure 1, the method for present embodiment comprises the steps:
Many ppp links in the corresponding same MP, because the networking mode of each link and the difference of corresponding characteristic, may have different transmission delays, it is the message fragment that the MP transmitting terminal sends simultaneously by different ppp links, because the difference of each ppp link transmission rate speed, the time of reception that arrives the MP receiving terminal also can be different.In the present embodiment, excessive for fear of the different message fragments that same message occurs because of the delay inequality that arrives the MP receiving terminal, and the message dropping phenomenon that causes, the transmission characteristic that belongs to all ppp links in the same MP is analyzed, specifically refer to all ppp links are calculated with respect to the transmission time delay difference of other ppp links respectively, to learn delay inequality between all ppp links link each other.
All ppp links are being carried out between link when delay inequality calculates, the MP transmitting terminal is in order to know that the MP receiving terminal to the time delay specification that message fragment is provided with, will obtain corresponding message fragment delay requirement from the MP receiving terminal.Particularly, corresponding to transmitting terminal and the receiving terminal of MP, its time delay specification that is provided with at message fragment separately may be inconsistent, so transmitting terminal is before sending message fragment, and receiving terminal need be informed transmitting terminal with the delay requirement that self is provided with.In the practical application, the MP transmitting terminal from MP receive the message fragment delay requirement form can for: the MP receiving terminal initiatively sends to the MP transmitting terminal with the message fragment delay requirement; Perhaps, the MP transmitting terminal acquires the message fragment delay requirement by the mode of " inquiry---response " from the MP receiving terminal.
The MP transmitting terminal calculates the delay inequality between each ppp link, and acquire after the message fragment delay requirement of MP receiving terminal setting, to divide into groups to all ppp links of correspondence according to these information, with according to each self-corresponding propagation delay time of every ppp link, and, many ppp links are divided in the different MP groups according to the delay inequality between each ppp link.
Particularly, the principle that MP group is divided in this step is: by many ppp links are divided into groups, make the delay inequality between all ppp links that comprise in each MP group can both satisfy the message fragment delay requirement that receiving terminal is provided with, promptly for any two ppp links in the same MP group, delay inequality can not exceed the delay requirement that the MP receiving terminal is provided with between link each other.
In the practical application, when many ppp links being carried out the division of son group, may be corresponding to same MP, all ppp links delay inequality to each other that it comprises does not all exceed the message fragment delay requirement of receiving terminal, thereby all corresponding ppp links all can be divided in the MP group in this MP, have promptly only generated a MP group after dividing into groups; Simultaneously, also might occur corresponding to same MP, delay inequality between the part ppp link that it comprises has exceeded the situation of the message fragment delay requirement of receiving terminal, for example in a MP, delay inequality between the ppp link that probably occurs having the ppp link of maximum transmitted time delay and having the minimum transfer time delay has exceeded the message fragment delay requirement of receiving terminal, therefore at this situation, all ppp links in this MP can be divided into two MP groups at least.And in the practical application, concrete division should be decided according to the concrete transmission characteristic of each ppp link correspondence.
After all ppp links in the MP being finished grouping, for the message to be sent that needs send, the MP transmitting terminal can select suitable MP group to send for message to be sent.Because for any one MP group, delay inequality between any two ppp links in it all can not exceed the message fragment delay requirement of MP receiving terminal, therefore no matter message to be sent carries out the burst transmission in which MP group, can not occur in the present embodiment yet because of certain burst propagation delay time on the ppp link of correspondence of this message excessive, thereby and cause the MP receiving terminal this message fragment to be abandoned the situation that causes whole message dropping, promptly guaranteed each message can be intactly in the recovery of recombinating of MP receiving terminal, can not produce message fragment reorganization failure phenomenon, improve the transmission performance of MP.
The multilink message sending method of present embodiment, by obtain the delay requirement that the MP receiving terminal is provided with at message fragment by the MP transmitting terminal, and the delay inequality between each ppp link calculated, and according to delay inequality between delay requirement that gets access to and the link that calculates, all ppp links of correspondence are divided into a plurality of MP groups, delay inequality in each MP group between any ppp link of correspondence all satisfies the delay requirement that receiving terminal is provided with, thereby make when same message transmits in independent MP group, can not occur exceeding the delay requirement of receiving terminal because of delay inequality between different ppp links, and the receiving terminal dropping packets burst that causes, the phenomenon of inefficacy of message fragment recombination function and message dropping, improve the transmission performance of MP, improved the security reliability of message transmissions among the MP.
The flow chart of the another kind of multilink message sending method that Fig. 2 provides for the embodiment of the invention, as shown in Figure 2, the method for present embodiment comprises the steps:
In the present embodiment, the MP transmitting terminal can be realized by following step with respect to the calculating of delay inequality between the link of other ppp links respectively all ppp links:
The MP transmitting terminal is at first tackled all ppp links transmission performance separately and is measured the delay inequality between each ppp link being measured when calculating, and concrete pointer is to each bar ppp link, and data message sends to the time difference of receiving terminal between receiving from transmitting terminal.Particularly, in the present embodiment, the MP transmitting terminal can be at any time, respectively by each ppp link, simultaneously send identical a plurality of latency measurement message fragments uniformly to the MP receiving terminal, all carry identical transmitting time in this each latency measurement message fragment and stab, this transmitting time is stabbed and is represented the MP transmitting terminal to send the concrete transmitting time of this latency measurement message fragment.
After the MP receiving terminal receives the latency measurement message fragment of MP transmitting terminal transmission respectively by each ppp link, as response to this latency measurement message fragment, to return a latency measurement response message burst by the ppp link of correspondence and give the MP transmitting terminal, carry and represent the ppp link of MP receiving terminal by correspondence, receive the time of reception stamp of the current time of the latency measurement message fragment that the MP transmitting terminal sends in this latency measurement response message burst.Because corresponding to the different ppp links among the same MP, the MP receiving terminal receives the MP transmitting terminal may be different at the concrete time of reception of the latency measurement message fragment of same transmitting time transmission, therefore, in the latency measurement response message burst that the MP receiving terminal returns by different ppp links, the time of reception that carries stabs may also can be different.
After the MP transmitting terminal receives the latency measurement response message burst that the MP receiving terminal returns by each ppp link respectively, at with a collection of latency measurement message fragment, promptly at the latency measurement message fragment that sends in same transmitting time, carry same transmitting time stamp, can stab according to the time of reception that carries in each the latency measurement response message burst corresponding to each ppp link respectively, difference between promptly stabbing according to each time of reception calculates delay inequality between each ppp link link each other.
Particularly, for for the different latency measurement response message burst of same latency measurement message fragment, because it is identical that the time of this latency measurement message fragment transmission is carried out in the unification of MP transmitting terminal, the difference between time of this latency measurement message fragment of receiving the MP receiving terminal has just reflected the delay inequality between each ppp link, therefore measure the difference of the different time of receptions that comprise in the response message burst between stabbing by calculating different delay, can correspondingly obtain with the corresponding different ppp links of different latency measurement response message bursts between link between delay inequality.And according to delay inequality between the link between all ppp links that calculate, the MP transmitting terminal can be learnt the transmission performance of each ppp link, the speed of transmission rate etc.
Need to prove that in the present embodiment, except that the aforementioned calculation method, the method that the MP transmitting terminal can also be used other is calculated delay inequality between link between each ppp link.Particularly, the MP transmitting terminal can be chosen in different time points, transmission carries latency measurement message fragment that the transmitting time of different correspondences stabs to the MP receiving terminal, and the MP receiving terminal is after receiving each latency measurement message fragment by each ppp link, can return corresponding latency measurement response message burst by each ppp link of correspondence equally and give the MP transmitting terminal, carry and represent the ppp link of MP receiving terminal by correspondence, receive the time of reception stamp of the current time of the above-mentioned latency measurement message fragment that the MP transmitting terminal sends in this latency measurement response message burst.
And the MP transmitting terminal is behind the latency measurement response message burst that receives the transmission of MP receiving terminal by each ppp link, stab and the transmitting time stamp according to the time of reception corresponding with each ppp link, the transmit after receive time delay that can calculate each corresponding ppp link is poor, promptly calculate corresponding to each ppp link, send a message from the MP transmitting terminal and receive the time required this message to the MP receiving terminal.Thereby according to poor with each self-corresponding different transmit after receive time delay of different ppp links, the MP transmitting terminal can be by calculating the difference between the variant transmit after receive time delay difference, and obtain delay inequality between link between the corresponding different ppp links.
Need to prove that except that above-mentioned two kinds of computational methods, in the practical application, the MP transmitting terminal can also calculate delay inequality between each ppp link link to each other, and the embodiment of the invention not limit to this by other computational methods that are suitable for.
Need to prove in addition, in the present embodiment, the MP transmitting terminal is when delay inequality is calculated between to the link between each ppp link, because each ppp link is under the influence of different loading conditions and other factors, current transmission performance can constantly change, promptly for each ppp link, delay inequality is not changeless between propagation delay time separately and link to each other, but can be in the dynamic change procedure.Therefore, in the present embodiment, delay inequality also should constantly be upgraded thereupon between the link between each ppp link that the MP transmitting terminal calculates.Simultaneously, the MP transmitting terminal can also be in conjunction with measurement result of calculation repeatedly, with the comprehensive propagation delay time of determining each ppp link correspondence, to determine delay inequality between the link between each ppp link.
Particularly, when transmission delay measured message burst, the MP transmitting terminal can be regularly or aperiodically, repeat repeatedly to send unified latency measurement message fragment to the MP receiving terminal, and the MP transmitting terminal is according to each calculating to delay inequality between link, should upgrade time delay difference between current link in time, be the last look corresponding with all current ppp link states with delay inequality between the link that guarantees current record.Further, calculating between current link after the delay inequality, the MP transmitting terminal can also perhaps be gone up result of calculation several times in conjunction with last result of calculation, and the employing smoothing algorithm calculates time delay difference between an average link.
All ppp links are being carried out between link when delay inequality calculates, the MP transmitting terminal obtains corresponding message fragment delay requirement from the MP receiving terminal.Particularly, in the present embodiment, the MP receiving terminal can be carried at the message fragment delay requirement in arbitrary latency measurement response message burst, sends to the MP transmitting terminal.
The MP transmitting terminal is delay inequality between the link that calculates between each ppp link, and acquire after the message fragment delay requirement of MP receiving terminal setting, can be according to these parameters, all ppp links are divided into groups, all ppp links are divided into respectively at least one MP group, each MP group can comprise a plurality of ppp links.Particularly, in the present embodiment, this step to the division principle of MP group and divide the result can with reference in the foregoing description to the corresponding description of step 102.
Particularly, to all ppp links carry out the partition process of MP group can be for: MP transmitting terminal at first according to each ppp link with respect to delay inequality between the link of ppp link with minimum transfer time delay, judge the ppp link that whether exists delay inequality between link to surpass the message fragment delay requirement that the MP receiving terminal is provided with among this MP; All ppp links of delay inequality will be divided into same MP group between less link having with respect to the ppp link of minimum transfer time delay, and guarantee all to satisfy after the message fragment delay requirement of receiving terminal between all ppp links in this MP group, the MP transmitting terminal can be again according to delay inequality between the link between remaining all ppp links, to remaining all ppp links, further carry out the division of MP group.
Illustrate as follows, the message fragment delay requirement of supposing the setting of MP receiving terminal is not for exceeding 8ms, and comprise 6 ppp links among this MP altogether, wherein 5 ppp links are respectively 4ms, 7ms, 9ms, 13ms and 15ms with respect to delay inequality between the link of the ppp link with minimum transfer time delay respectively.Therefore the MP transmitting terminal exists delay inequality between link to surpass after the ppp link of message fragment delay requirement 8ms of MP receiving terminal in having determined this MP, to be divided into a MP group with respect to the ppp link itself that delay inequality between the link of the ppp link of minimum transfer time delay is respectively the ppp link of 4ms and 7ms and has a minimum transfer time delay, all ppp links in this MP organizes all satisfy the burst delay requirement of calling the score of MP receiving terminal.
Further, the MP transmitting terminal remains the message fragment delay requirement whether to each other delay inequality of 3 ppp links (mainly refer to judge in 3 ppp links of residue all the other 2 with respect to delay inequality between the link of the ppp link with minimum transfer time delay) exceeded the MP receiving terminal again and judges.And according to judgement, the MP transmitting terminal is learnt in 3 ppp links, all the other two are respectively 13ms-9ms=4ms with respect to delay inequality between the link of minimum transfer time delay ppp link, and 15ms-9ms=6ms, all do not exceed 8ms, therefore the MP transmitting terminal is divided into these 3 ppp link unifications in the MP group, and need not further to divide.
Divide by above-mentioned MP group, all ppp links that obtained during two MP organize all satisfy the message fragment delay requirement of MP receiving terminal, so send when calling the score burst in independent MP group, can not produce message fragment reorganization failure phenomenon.
After the MP transmitting terminal is divided end to MP group, though delay inequality all can not exceed the message fragment delay requirement of MP receiving terminal between the link in each MP group between ppp link, but corresponding different MP group, the high low level of time delay of each MP group will be different.For example, in above-mentioned example, second MP group compared with first MP group, and whole significantly time delay will be in higher state, and overall transfer speed is slower.
Therefore when the MP transmitting terminal need send message to be sent, whole time delay height that can be corresponding according to delay sensitive degree, each MP group of message correspondence to be sent, and, select suitable MP group for message to be sent and send according to default MP group selection principle.The MP group that obtains when division is specially two or more MP when organizing, this MP group selection principle can for: for the higher message to be sent of time delay sensitivity, it is had relatively high expectations to time delay, should select the lower MP group of whole time delay for such message sends, and for the lower message to be sent of time delay sensitivity, it requires relatively lowly to time delay, can select higher MP of whole time delay group for such message and send.
Particularly, in embodiments of the present invention, can in the default time delay sensitivity threshold value of MP transmitting terminal, and, preset a time delay threshold value at each time delay sensitivity rank of message to be sent at the whole time delay degree that each MP organizes.When the time delay sensitivity of message to be sent in the MP transmitting terminal was higher than default time delay sensitivity threshold value, the MP transmitting terminal can be selected whole time delay for this message to be sent and be lower than the MP group of default time delay threshold value; And when the time delay sensitivity of message to be sent was lower than default time delay sensitivity threshold value, the MP transmitting terminal then can be selected whole time delay for this message to be sent and be higher than the MP group of default time delay threshold value.
Need be appreciated that, in the practical application, concrete MP group selection can be decided according to actual conditions, for example work as message amount to be sent more after a little while, even for the lower message of time delay sensitivity, under the situation that the lower MP group of whole time delay can be born, can select equally this transmission performance preferably this MP group send, to guarantee the overall data transmission performance of this MP.
The MP transmitting terminal is after having selected corresponding MP group for message to be sent, further optimally, can also be according to the corresponding respectively various performance informations of each ppp link in the MP group of selecting, the current chain-circuit time delay information, link bandwidth and link packet MTU (the MaximumTransmission Unit that comprise each ppp link, be called for short MTU), be the performance information adaptive message fragment transmission policy of message fragment distribution to be sent with each ppp link.Particularly, the message fragment length that can comprise definite message to be sent in this message fragment transmission policy, and the ppp link that is respectively applied for each message fragment of transmission, specifically refer to determine that message to be sent should be a message fragment how long by cutting, and should be transmitted transmission in any bar ppp link respectively by each message fragment after the cutting.
Particularly, at the different performance state information of time delay, bandwidth and the MTU etc. of each ppp link of correspondence that comprises in this MP group, the MP transmitting terminal is that the message transmissions strategy that message to be sent distributed also can all differences.For example, if in MP that the selects group, the current chain-circuit time delay of a certain ppp link correspondence is less, link bandwidth is big or link packet MTU when big, can on this ppp link, transmit allocated length relatively than length or the more relatively message fragment of quantity; Otherwise and, if the current chain-circuit time delay of a certain ppp link correspondence is big, link bandwidth is less or link packet MTU hour, then should on this ppp link, transmit allocated length relatively weak point or the less relatively message fragment of quantity.
But in actual applications, the principle of foundation is also really not so absolute during MP transmitting terminal assignment message transmission policy, but can take all factors into consideration the various combination of each performance factor of each ppp link in the MP group.For example, for a certain ppp link in the MP group, if the current chain-circuit time delay of this ppp link is less, link bandwidth is also bigger, but but have less link packet MTU, when being this ppp link assignment message burst, should be the less a fairly large number of message fragment of its allocated length.Again for example, if the chain-circuit time delay of a certain ppp link is less, also have bigger link packet MTU simultaneously, but link bandwidth then should be the big but message fragment of negligible amounts of this ppp link allocated length but hour.The concrete message transmissions strategy method of salary distribution is also enumerated one by one at this, and the MP transmitting terminal can be provided with flexibly according to the actual conditions of each ppp link.
Selecting corresponding MP group for message to be sent, and after having distributed the message fragment transmission policy that in this MP group, sends, the MP transmitting terminal sends the form of message to be sent with burst in selecting corresponding MP group, not only fundamentally solve the problem that message fragment recombination function that the MP receiving terminal may occur lost efficacy, also improved the performance of message transmissions well.
The multilink message sending method of present embodiment, by obtain the delay requirement that the MP receiving terminal is provided with at message fragment at the MP transmitting terminal, and after the delay inequality between each ppp link calculated, according to delay inequality between delay requirement that gets access to and the link that calculates, all ppp links of correspondence are divided into a plurality of MP groups, delay inequality in each MP group between any ppp link of correspondence all satisfies the delay requirement that receiving terminal is provided with, thereby make when same message transmits in independent MP group, can not occur exceeding the delay requirement of receiving terminal because of delay inequality between different ppp links, and the receiving terminal dropping packets burst that causes, the phenomenon of inefficacy of message fragment recombination function and message dropping, improve the transmission performance of MP, improved the security reliability of message transmissions among the MP.
Further, in the present embodiment, the MP transmitting terminal carries out before the message transmission in MP group, also select suitable MP group for it according to the delay sensitive degree of message to be sent, and according to each the ppp link link corresponding performance information in this MP group, for this message to be sent is determined burst adapted transmission strategy, thereby this has further improved the transmission performance of this transmission message in MP.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
The structural representation of a kind of multi-link messages transmitting apparatus that Fig. 3 provides for the embodiment of the invention.As shown in Figure 3, the multi-link messages transmitting apparatus of present embodiment comprises: delay inequality computing module 11, acquisition module 12, grouping module 13 and sub-group selection sending module 14.
Wherein, delay inequality computing module 11 is used to calculate delay inequality between link between the different ppp links that comprise in the MP; Acquisition module 12 is used to obtain the message fragment delay requirement that the MP receiving terminal is provided with; Delay inequality between the link that grouping module 13 is used for calculating according to delay inequality computing module 11, and the message fragment delay requirement of the MP receiving terminal that gets access to of acquisition module 12, all ppp links are divided into groups, generate at least one MP group to divide, the delay inequality between any two ppp links that comprise in each MP group all satisfies the message fragment delay requirement; Sub-group selection sending module 14 is used for dividing the MP group that generates from grouping module 13, selects at least one MP group for message to be sent and sends.
Particularly, in the present embodiment, the multi-link messages transmitting apparatus calculates delay inequality between all the different ppp links link each other that comprises in the MP by delay inequality computing module 11, and acquire the message fragment delay requirement of MP receiving terminal setting by acquisition module 12 after, grouping module 13 wherein is according to delay inequality between the link of each ppp link that calculates, and according to the message fragment delay requirement of the MP receiving terminal that gets access to, can divide into groups to all ppp links that comprise in this MP, will comprise in this MP that all ppp links are divided at least one MP group.Wherein can comprise at least one ppp link in each MP group, and grouping module 13 dividing when generating at least one MP and organizing, must guarantee that the delay inequality between any two ppp links that each MP comprises in organizing all satisfies the message fragment delay requirement.After all ppp links being carried out the division of MP group, when needs carried out the transmission of message, sub-group selection sending module 14 was from the MP group that generates, for message to be sent selects at least one MP group to send.
Particularly, in the present embodiment, the concrete course of work that above-mentioned all modules are related can be with reference to the related content of the related related embodiment exposure of above-mentioned multilink message sending method.
The multi-link messages transmitting apparatus of present embodiment, by getting access to the delay requirement that the MP receiving terminal is provided with at message fragment, and calculate after the delay inequality between each ppp link, and according to delay inequality between delay requirement that gets access to and the link that calculates, all ppp links of correspondence are divided into a plurality of MP groups, guarantee that the delay inequality between any ppp link corresponding in each MP group all satisfies the delay requirement that receiving terminal is provided with, thereby make when same message transmits in independent MP group, can not occur exceeding the delay requirement of receiving terminal because of delay inequality between different ppp links, and the receiving terminal dropping packets burst that causes, the phenomenon of inefficacy of message fragment recombination function and message dropping, improve the transmission performance of MP, improved the security reliability of message transmissions among the MP.
The structural representation of the another kind of multi-link messages transmitting apparatus that Fig. 4 provides for the embodiment of the invention.Particularly, as shown in Figure 4, on the basis of above-mentioned multi-link messages transmitting apparatus embodiment, in the multi-link messages transmitting apparatus of present embodiment, when at least one MP group of grouping module 13 division generations was organized for two or more MP, sub-group selection sending module 14 can also comprise MP group selection submodule 141 and message transmission submodule 142.
Wherein, MP group selection submodule 141 is used for according to the default MP group selection principle and the time delay sensitivity of message to be sent, for message to be sent is selected corresponding MP group, should default MP group selection principle comprise: for the high message to be sent of time delay sensitivity is selected the lower MP group of whole time delay, for the low message to be sent of time delay sensitivity is selected the higher MP group of whole time delay; Message sends submodule 142 and then is used for sending message to be sent in the MP group of selecting.
Particularly, in embodiments of the present invention, MP group selection submodule 141 can be at each time delay sensitivity rank of message to be sent, in the default time delay sensitivity threshold value of MP transmitting terminal, and, preset a time delay threshold value at the whole time delay degree that each MP organizes.When the time delay sensitivity of message to be sent was higher than default time delay sensitivity threshold value, MP group selection submodule 141 can be selected whole time delay for this message to be sent and be lower than the MP group of default time delay threshold value; And when the time delay sensitivity of message to be sent was lower than default time delay sensitivity threshold value, 141 of MP group selection submodules can be selected whole time delay for this message to be sent and be higher than the MP group of default time delay threshold value.
And all ppp links in 13 couples of MP of grouping module are finished after the grouping, message to be sent for the needs transmission, in the multi-link messages transmitting apparatus of present embodiment, MP group selection submodule 141 can be selected suitable MP group for message to be sent, and by message transmission submodule 142 this message to be sent is sent in the MP group of selecting.And in the process of the selection of carrying out MP group, MP group selection submodule 141 can be according to default MP group selection principle, and the whole time delay height corresponding with each MP group according to the delay sensitive degree of message correspondence to be sent, be that message to be sent selects suitable MP to organize.
Further, in the present embodiment, sub-group selection sending module 14 can also comprise tactful distribution sub module 143, be used for before message sends submodule 142 transmissions message to be sent, according to corresponding respectively current chain-circuit time delay information, link bandwidth and the link packet MTU of each ppp link in the MP group of selecting, for message to be sent distributes adaptive message fragment transmission policy, this message fragment transmission policy comprises definite message fragment length, and determines to be respectively applied for the ppp link that sends each message fragment.
Particularly, before message sends submodule 142 transmissions message to be sent, and MP group selection submodule 141 has been selected suitable MP group for message to be sent after, at the corresponding respectively various performance informations of each ppp link in the MP group of this selection, the current chain-circuit time delay information, link bandwidth and the link packet MTU that comprise each ppp link, tactful distribution sub module 143 can further be that message fragment to be sent is determined the adaptive message fragment transmission policy of performance information with each ppp link.
Particularly, the message fragment length that can comprise definite message to be sent in this message fragment transmission policy, and the ppp link that is respectively applied for each message fragment of transmission, determine that promptly message to be sent should be a message fragment how long by cutting, and should be transmitted transmission in any bar ppp link respectively by each message fragment after the cutting.According to this message fragment transmission policy that distributes, message sends submodule 142 and message to be sent reasonably can be sent, when fundamentally having solved the problem that message fragment recombination function that the MP receiving terminal may occur lost efficacy, also improved message fragment transmission performances in MP further.
Further, in the present embodiment, delay inequality computing module 11 can also comprise: first sends submodule 111, first receives the submodule 112 and first calculating sub module 113.
Wherein, first send submodule 111 and be used for respectively sending a plurality of latency measurement message fragments simultaneously to the MP receiving terminal by different ppp links; First receives submodule 112 is used to receive the latency measurement response message burst that the MP receiving terminal returns by different ppp links respectively, carries the MP receiving terminal receives the latency measurement message fragment by the ppp link of correspondence time of reception stamp in each latency measurement response message burst respectively; 113 of first calculating sub module are used for calculating delay inequality between each ppp link link each other according to the difference between corresponding with each ppp link respectively time of reception stamp.
In the present embodiment, the calculating of delay inequality specifically can be achieved by above-mentioned three submodules between the link between 11 pairs of different ppp links of delay inequality computing module.Particularly, delay inequality between 11 pairs of each ppp links of delay inequality computing module is measured when calculating, should measure all ppp links transmission performance separately, concrete pointer is to each bar ppp link, and data message sends to the time difference of receiving terminal between receiving from transmitting terminal.
In order to measure this time difference, in the present embodiment, first sends submodule 111 will be at any time, respectively by each ppp link, simultaneously send identical a plurality of latency measurement message fragments uniformly to the MP receiving terminal, wherein all carry identical transmitting time in each latency measurement message fragment and stab, this transmitting time is stabbed and is represented the MP transmitting terminal to send the concrete transmitting time of this latency measurement message fragment.After the MP receiving terminal receives this latency measurement message fragment respectively by each ppp link, to return a latency measurement response message burst by the ppp link of correspondence and receive submodule 112, carry and represent the ppp link of MP receiving terminal by correspondence, receive the time of reception stamp of the current time of the latency measurement message fragment that the MP transmitting terminal sends in this latency measurement response message burst to first.
Because for for the corresponding different latency measurement response message burst of same latency measurement message fragment, first to send the 111 unified times of sending out the latency measurement message fragments of submodule be identical, thereby the MP receiving terminal receives difference between time of this latency measurement message fragment and just reflected delay inequality between each ppp link.Therefore, according to the first different latency measurement response message burst that receives the different ppp links of this correspondence that submodule 112 receives, first calculating sub module 113 is by calculating the difference between the different time of receptions stamps that comprise in the different delay measurement response message burst, can correspondingly obtain with the corresponding different ppp links of different latency measurement response message bursts between link between delay inequality, promptly obtain in the MP each ppp link respectively with respect to delay inequality between the link of other ppp links.And according to delay inequality between the link that calculates, other modules of multi-link messages transmitting apparatus can be proceeded next step the operation that MP group is divided and message sends.
Need to prove that in the present embodiment, the concrete course of work that above-mentioned all modules are related equally can be with reference to the related content of the related related embodiment exposure of above-mentioned multilink message sending method.
The multi-link messages transmitting apparatus of present embodiment, by getting access to the delay requirement that the MP receiving terminal is provided with at message fragment, and calculate after the delay inequality between each ppp link, and according to delay inequality between delay requirement that gets access to and the link that calculates, all ppp links of correspondence are divided into a plurality of MP groups, guarantee that the delay inequality between any ppp link corresponding in each MP group all satisfies the delay requirement that receiving terminal is provided with, thereby make when same message transmits in independent MP group, can not occur exceeding the delay requirement of receiving terminal because of delay inequality between different ppp links, and the receiving terminal dropping packets burst that causes, the phenomenon of inefficacy of message fragment recombination function and message dropping, improve the transmission performance of MP, improved the security reliability of message transmissions among the MP.
Further, in the present embodiment, the MP transmitting terminal carries out before the message transmission in MP group, also select suitable MP group for it according to the delay sensitive degree of message to be sent, and according to each the ppp link link corresponding performance information in this MP group, be the adaptive transmission policy of this message fragment to be sent, thereby this has further improved the transmission performance of this transmission message in MP.
The structural representation of another multi-link messages transmitting apparatus that Fig. 5 provides for the embodiment of the invention.As shown in Figure 5, on the basis of a last embodiment, the difference of the multi-link messages transmitting apparatus of present embodiment and the multi-link messages transmitting apparatus of a last embodiment is: in the present embodiment multi-link messages transmitting apparatus, delay inequality computing module 11 can also comprise: second sends submodule 114, second receives submodule 115 and second calculating sub module 116 and the 3rd calculating sub module 117.
Wherein, second sends submodule 114 is used for respectively by different ppp links, send carry the transmitting time stamp a plurality of latency measurement message fragments to the MP receiving terminal; The second reception submodule 115 is used to connect states the more than one latency measurement response message burst that the MP receiving terminal returns by different ppp links respectively, carries respectively in each latency measurement response message burst and states the MP receiving terminal receives the latency measurement message fragment by the ppp link of correspondence time of reception stamp; Second calculating sub module 116 is used for according to stabbing with the corresponding different time of reception of different ppp links respectively and the difference of transmitting time between stabbing, and it is poor to calculate different ppp link transmit after receive time delays separately; Difference between the ppp link transmit after receive time delay difference separately that 117 of the 3rd calculating sub module are used for calculating according to second calculating sub module 116 is calculated delay inequality between the link between the different ppp links.
Particularly, in the present embodiment, second sends submodule 114 can be chosen in different time points, transmission carries latency measurement message fragment that the transmitting time of different correspondences stabs to the MP receiving terminal, and the MP receiving terminal is after receiving each latency measurement message fragment by each ppp link, can return corresponding latency measurement response message burst by each ppp link of correspondence equally and give the MP transmitting terminal, carry in this latency measurement response message burst and represent the MP receiving terminal by corresponding ppp link, the time of reception that receives the current time of the above-mentioned latency measurement message fragment that the MP transmitting terminal sends stabs.
And the second reception submodule 115 is behind the latency measurement response message burst that receives the transmission of MP receiving terminal by each ppp link, second calculating sub module 116 is stabbed according to the time of reception corresponding with each ppp link and transmitting time is stabbed, the transmit after receive time delay that can calculate each corresponding ppp link is poor, promptly calculate corresponding to each ppp link, send a message from the MP transmitting terminal and receive the time required this message to the MP receiving terminal.Thereby the 3rd calculating sub module 117 is according to poor with each self-corresponding different transmit after receive time delay of different ppp links, can be by calculating the difference between the variant transmit after receive time delay difference, and obtain delay inequality between link between the corresponding different ppp links.
Particularly, in the present embodiment, the concrete course of work that all modules of except that delay inequality computing module 11 other are related, the related content that can disclose with reference to the related related embodiment of above-mentioned multilink message sending method, and with reference to the disclosed related content of the foregoing description multi-link messages transmitting apparatus.
The multi-link messages transmitting apparatus of present embodiment, by getting access to the delay requirement that the MP receiving terminal is provided with at message fragment, and calculate after the delay inequality between each ppp link, and according to delay inequality between delay requirement that gets access to and the link that calculates, all ppp links of correspondence are divided into a plurality of MP groups, guarantee that the delay inequality between any ppp link corresponding in each MP group all satisfies the delay requirement that receiving terminal is provided with, thereby make when same message transmits in independent MP group, can not occur exceeding the delay requirement of receiving terminal because of delay inequality between different ppp links, and the receiving terminal dropping packets burst that causes, the phenomenon of inefficacy of message fragment recombination function and message dropping, improve the transmission performance of MP, improved the security reliability of message transmissions among the MP.
Further, in the present embodiment, the MP transmitting terminal carries out before the message transmission in MP group, also select suitable MP group for it according to the delay sensitive degree of message to be sent, and according to each the ppp link link corresponding performance information in this MP group, be the adaptive transmission policy of this message fragment to be sent, thereby this has further improved the transmission performance of this transmission message in MP.
The structural representation of a kind of multi-link messages transmitting system that Fig. 6 provides for the embodiment of the invention.As shown in Figure 6, the multi-link messages transmitting system of present embodiment comprises: the multi-link messages transmitting apparatus 1 in the foregoing description, and the multi-link messages receiving equipment 2 that is connected with this multi-link messages transmitting apparatus 1.
Particularly, delay inequality between the link between the different ppp links that this multi-link messages transmitting apparatus 1 is used for comprising in calculating MP, and after acquiring the message fragment delay requirement of multi-link messages receiving equipment 2 settings, according to delay inequality between the link that calculates, and the message fragment delay requirement of multi-link messages receiving equipment 2, different ppp links in the MP are divided into groups, with at least one MP group of division generation, and be that message to be sent selects at least one MP group to send from MP that divides generation organizes.Wherein, the delay inequality between any two ppp links that comprise in each MP group all satisfies the message fragment delay requirement of multi-link messages receiving equipment 2;
Multi-link messages receiving equipment 2 then is used to send the message fragment delay requirement to multi-link messages transmitting apparatus 1, and receives the message to be sent that the MP group of multi-link messages transmitting apparatus 1 through selecting sends.
Need to prove, all of multi-link messages transmitting apparatus are formed module and the related concrete courses of work of each module in the present embodiment, the related content that can disclose with reference to above-mentioned multilink message sending method and the related related embodiment of multi-link messages transmitting apparatus.
The multi-link messages transmitting system of present embodiment, by get access to the delay requirement that the MP receiving terminal is provided with at message fragment at the MP transmitting terminal, and calculate after the delay inequality between each ppp link, and according to delay inequality between delay requirement that gets access to and the link that calculates, all ppp links of correspondence are divided into a plurality of MP groups, guarantee that the delay inequality between any ppp link corresponding in each MP group all satisfies the delay requirement that receiving terminal is provided with, thereby make when same message transmits in independent MP group, can not occur exceeding the delay requirement of receiving terminal because of delay inequality between different ppp links, and the receiving terminal dropping packets burst that causes, the phenomenon of inefficacy of message fragment recombination function and message dropping, improve the transmission performance of MP, improved the security reliability of message transmissions among the MP.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (11)
1. a multilink message sending method is characterized in that, comprising:
Calculate delay inequality between the link between the different point-to-point protocol ppp links that comprise in the point-to-point multi-link protocol MP;
Obtain the message fragment delay requirement that the MP receiving terminal is provided with;
According to delay inequality between described message fragment delay requirement and the described link that calculates, described ppp link is divided into groups, generate at least one MP group to divide, the delay inequality between any two ppp links that comprise in each described MP group all satisfies described message fragment delay requirement;
Selecting at least one MP group for message to be sent from described MP group sends.
2. multilink message sending method according to claim 1, it is characterized in that, if described at least one MP group after dividing comprises two or more MP groups, described is that message to be sent is selected at least one MP to organize to send specifically to comprise from described MP organizes:
According to the time delay sensitivity of described message to be sent and default MP group selection principle, for described message to be sent is selected MP group, described MP group selection principle comprises: when the time delay sensitivity of described message to be sent is higher than default time delay sensitivity threshold value, select whole time delay for described message to be sent and be lower than the MP group of default time delay threshold value, when the time delay sensitivity of described message to be sent is lower than described default time delay sensitivity threshold value, selects whole time delay for described message to be sent and be higher than the MP group of described default time delay threshold value;
In the MP group of selecting, send described message to be sent.
3. multilink message sending method according to claim 2 is characterized in that, before the described message to be sent of transmission, described method also comprised in described MP in selection organized:
According to corresponding respectively current chain-circuit time delay information, link bandwidth and the link packet MTU of each ppp link that comprises in the MP group of selecting, for described message to be sent distributes adaptive message fragment transmission policy, described message fragment transmission policy comprises the length of determining message fragment, and/or determines to be respectively applied for the ppp link that sends each message fragment.
4. according to the arbitrary described multilink message sending method of claim 1～3, it is characterized in that delay inequality comprises between the link between the different ppp links that comprise in the described calculating MP:
By described different ppp links, send a plurality of latency measurement message fragments simultaneously respectively to described MP receiving terminal;
Receive the latency measurement response message burst that described MP receiving terminal returns by described different ppp links respectively, carry described MP receiving terminal receives described latency measurement message fragment by the ppp link of correspondence time of reception stamp in each described latency measurement response message burst respectively;
Respectively according to difference between the corresponding time of reception of described different ppp links stabs, calculate delay inequality between the link between the described different ppp link.
5. according to the arbitrary described multilink message sending method of claim 1～3, it is characterized in that delay inequality comprises between the link between the different ppp links that comprise in the described calculating MP:
By described different ppp links, transmission carries a plurality of latency measurement message fragments of transmitting time stamp to described MP receiving terminal respectively;
Receive described MP receiving terminal respectively by described different ppp links return latency measurement response message burst, carry the time of reception that the ppp link of described MP receiving terminal by correspondence receive described latency measurement message fragment in each described latency measurement response message burst respectively and stab;
According to stabbing with the corresponding time of reception of described different ppp links and the difference of transmitting time between stabbing, it is poor to calculate described ppp link transmit after receive time delay separately respectively;
According to the difference between the described ppp link transmit after receive time delay difference separately, calculate delay inequality between the link between the described different ppp link.
6. a multi-link messages transmitting apparatus is characterized in that, comprising:
The delay inequality computing module is used to calculate delay inequality between the link between the different point-to-point protocol ppp links that comprise in the point-to-point multi-link protocol MP;
Acquisition module is used to obtain the message fragment delay requirement that the MP receiving terminal is provided with;
Grouping module, be used for according to delay inequality between described message fragment delay requirement and the described link that calculates, described different ppp links are divided into groups, generate at least one MP group to divide, the delay inequality between any two ppp links that comprise in each described MP group all satisfies described message fragment delay requirement;
Sub-group selection sending module is used for selecting at least one MP group from described MP group for message to be sent and sends.
7. multi-link messages transmitting apparatus according to claim 6 is characterized in that, if described at least one MP group after described grouping module is divided comprises two or organize greater than two MP, described sub-group selection sending module comprises:
MP group selection submodule, be used for according to the time delay sensitivity of described message to be sent and default MP group selection principle, for described message to be sent is selected corresponding described MP group, described MP group selection principle comprises: when the time delay sensitivity of described message to be sent is higher than default time delay sensitivity threshold value, select whole time delay for described message to be sent and be lower than the MP group of default time delay threshold value, when the time delay sensitivity of described message to be sent is lower than described default time delay sensitivity threshold value, selects whole time delay for described message to be sent and be higher than the MP group of described default time delay threshold value;
Message sends submodule, is used for sending described message to be sent in the MP group of selecting.
8. multi-link messages transmitting apparatus according to claim 7 is characterized in that, described sub-group selection sending module also comprises:
The strategy distribution sub module, be used for before sending described message to be sent in the MP group that described message transmission submodule is being selected, according to corresponding respectively current chain-circuit time delay information, link bandwidth and the link packet MTU of each ppp link that comprises in the MP group of selecting, for described message to be sent distributes adaptive message fragment transmission policy, described message fragment transmission policy comprises the length of determining message fragment, and/or determines to be respectively applied for the ppp link that sends each message fragment.
9. according to the arbitrary described multi-link messages transmitting apparatus of claim 6～8, it is characterized in that described delay inequality computing module also comprises:
First sends submodule, is used for respectively sending a plurality of latency measurement message fragments simultaneously to described MP receiving terminal by described different ppp links;
First receives submodule, be used to receive the latency measurement response message burst that described MP receiving terminal returns by described different ppp links respectively, carry described MP receiving terminal receives described latency measurement message fragment by the ppp link of correspondence time of reception stamp in each described latency measurement response message burst respectively;
First calculating sub module, be used for according to respectively with difference between the corresponding time of reception of described different ppp links stabs, calculate delay inequality between the link between the described different ppp link.
10. according to the arbitrary described multi-link messages transmitting apparatus of claim 6～8, it is characterized in that described delay inequality computing module also comprises:
Second sends submodule, is used for respectively by described different ppp links, send carry the transmitting time stamp a plurality of latency measurement message fragments to described MP receiving terminal;
Second receives submodule, be used to receive the latency measurement response message burst that described MP receiving terminal returns by described different ppp links respectively, carry described MP receiving terminal receives described latency measurement message fragment by the ppp link of correspondence time of reception stamp in each described latency measurement response message burst respectively;
Second calculating sub module is used for according to stabbing with the corresponding different time of reception of described different ppp links respectively and the difference of transmitting time between stabbing, and it is poor to calculate described ppp link transmit after receive time delay separately;
The 3rd calculating sub module is used for calculating delay inequality between the link between the described different ppp link according to the difference between the described ppp link transmit after receive time delay difference separately.
11. a multi-link messages transmitting system is characterized in that, comprising: multi-link messages transmitting apparatus, and the multi-link messages receiving equipment that is connected with described multi-link messages transmitting apparatus, wherein,
Delay inequality between the link between the different point-to-point protocol ppp links that described multi-link messages transmitting apparatus is used for comprising in calculating point-to-point multi-link protocol MP, and after acquiring the message fragment delay requirement of described multi-link messages receiving equipment setting, according to delay inequality between described message fragment delay requirement and the described link that calculates, described different ppp links are divided into groups, generate at least one MP group to divide, and be that message to be sent selects at least one MP group to send from described MP group, the delay inequality between any two ppp links that comprise in each described MP group all satisfies described message fragment delay requirement;
Described multi-link messages receiving equipment is used to send described message fragment delay requirement to described multi-link messages transmitting apparatus, and receives the message described to be sent that the MP group of described multi-link messages transmitting apparatus through selecting sends.
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Application publication date: 20100922 |