CN107465484B - A kind of Adaptive Modulation and Coding AMC method of adjustment and system - Google Patents

A kind of Adaptive Modulation and Coding AMC method of adjustment and system Download PDF

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Publication number
CN107465484B
CN107465484B CN201610391255.4A CN201610391255A CN107465484B CN 107465484 B CN107465484 B CN 107465484B CN 201610391255 A CN201610391255 A CN 201610391255A CN 107465484 B CN107465484 B CN 107465484B
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channel quality
amc
weighted factor
difference
channel
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CN107465484A (en
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吴兆礼
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Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H04L1/0019Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy in which mode-switching is based on a statistical approach
    • H04L1/0021Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy in which mode-switching is based on a statistical approach in which the algorithm uses adaptive thresholds
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026Transmission of channel quality indication

Abstract

The present invention provides a kind of Adaptive Modulation and Coding AMC method of adjustment and systems, wherein the described method includes: obtaining the channel quality of the present channel of terminal;According to the channel quality of the present channel difference with the first channel quality thresholds, second channel quality threshold and third channel quality thresholds respectively, weighted factor is determined;Correction result and the weighted factor are accumulated according to history AMC, determines AMC correction value;Terminal data is scheduled according to the determining AMC correction value.Solve the amendment cumulative amount for not being adapted dynamically AMC existing for existing AMC adjustable strategies through the invention, especially when user is mobile, AMC correct cumulative amount and it is mobile after scene mismatch caused by AMC deviation the problem of.

Description

A kind of Adaptive Modulation and Coding AMC method of adjustment and system
Technical field
The present invention relates to fields of communication technology, more particularly to a kind of Adaptive Modulation and Coding AMC method of adjustment and system.
Background technique
In mobile communication system, be usually taken with AMC (Adaptive Modulation and Coding, adaptively Modulating-coding) technology come according to channel circumstance adjust modulating-coding grade MCS (Modulation and Coding Scheme, Modulation and coding strategy, key technology of the AMC technology as mobile communication system influence user's sense using throughout various scenes Know.
One principle of AMC technology is: when terminal is mobile, channel circumstance changes, based on history AMC accumulation amendment knot Fruit adjusts business.By at present it is common channel quality is good, in, for poor three scenes, existing AMC adjustable strategies are directed to It is good, in, the user under poor three channel circumstances is using same standard and adjustment principle: for example, user is from being almost moved to When point, user can be applied directly in the amendment accumulation of AMC when user is moved to better in not good enough AMC amendment accumulation;Again Alternatively, user from it is better be moved to not good enough when, can by better AMC correct accumulation be applied directly to when user is moved to not good enough In AMC amendment accumulation.
As it can be seen that existing AMC adjustable strategies the problem is that: be not adapted dynamically the amendment cumulative amount of AMC, especially When user is mobile, AMC offset issue caused by the scene that AMC corrects after cumulative amount and movement mismatches.
Summary of the invention
The present invention provides a kind of Adaptive Modulation and Coding AMC method of adjustment and system, to solve existing AMC adjustable strategies The existing amendment cumulative amount for not being adapted dynamically AMC, especially when user is mobile, after AMC corrects cumulative amount and movement The problem of AMC deviation caused by scene mismatches.
To solve the above-mentioned problems, the invention discloses a kind of Adaptive Modulation and Coding AMC methods of adjustment, comprising:
Obtain the channel quality of the present channel of terminal;
According to the channel quality of the present channel respectively with the first channel quality thresholds, second channel quality threshold and The difference of three channel quality thresholds, determines weighted factor;
Correction result and the weighted factor are accumulated according to history AMC, determines AMC correction value;
Terminal data is scheduled according to the determining AMC correction value.
Correspondingly, the invention also discloses a kind of Adaptive Modulation and Coding AMC to adjust system, comprising:
Obtain module, the channel quality of the present channel for obtaining terminal;
First determining module, for according to the channel quality of the present channel respectively with the first channel quality thresholds, The difference of two channel quality thresholds and third channel quality thresholds, determines weighted factor;
Second determining module determines AMC correction value for accumulating correction result and the weighted factor according to history AMC;
Scheduler module, for being scheduled according to the determining AMC correction value to terminal data.
Compared with prior art, the present invention includes the following advantages:
The invention discloses a kind of Adaptive Modulation and Coding AMC Adjusted Options, can be according to the channel quality of present channel With the difference of the first channel quality thresholds, second channel quality threshold and third channel quality thresholds, determine in each channel matter Weighted factor corresponding under environment is measured, and then according to determining weighted factor to history corresponding to each channel quality environment AMC accumulation correction result is modified, and obtains final AMC correction value, and carry out business tune using obtained AMC correction value Degree.As it can be seen that in the present invention, when the channel quality of present channel is different or changes, AMC correction value the result is that dynamic becomes Change, in other words, determining AMC correction value can be dynamic according to the channel quality of the present channel where terminal through the invention State adjustment guarantees the accuracy of AMC adjustment so that the AMC correction value that adjustment obtains matches with scene of the terminal after mobile.
Detailed description of the invention
Fig. 1 is a kind of step flow chart of Adaptive Modulation and Coding AMC method of adjustment in the embodiment of the present invention one;
Fig. 2 is a kind of step flow chart of Adaptive Modulation and Coding AMC method of adjustment in the embodiment of the present invention two;
Fig. 3 is a kind of step flow chart of Adaptive Modulation and Coding AMC method of adjustment in the embodiment of the present invention three;
Fig. 4 is a kind of structural block diagram of Adaptive Modulation and Coding AMC adjustment system in the embodiment of the present invention four;
Fig. 5 is a kind of structural block diagram of preferred Adaptive Modulation and Coding AMC adjustment system in the embodiment of the present invention four;
Fig. 6 is the structural schematic diagram that one kind first determines submodule in the embodiment of the present invention four;
Fig. 7 is the structural schematic diagram that one kind second determines submodule in the embodiment of the present invention four;
Fig. 8 is the structural schematic diagram that a kind of third determines submodule in the embodiment of the present invention four.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real Applying mode, the present invention is described in further detail.
Embodiment one
Referring to Fig.1, a kind of step process of Adaptive Modulation and Coding AMC method of adjustment in the embodiment of the present invention one is shown Figure.In the present embodiment, the Adaptive Modulation and Coding AMC method of adjustment includes:
Step 102, the channel quality of the present channel of terminal is obtained.
In the present embodiment, the channel quality where terminal, which can be, is directly reported to base station by terminal, is also possible to Base station is obtained by measurement, for example, (Reference Signal Receiving Power, reference signal receive function to RSRP Rate), the parameters such as SINR (Signal to Interference plus Noise Ratio, Signal to Interference plus Noise Ratio) it is equal May be used to indicate the channel quality of the present channel where terminal, the present embodiment to this with no restriction.
Step 104, according to the channel quality of the present channel respectively with the first channel quality thresholds, second channel quality The difference of thresholding and third channel quality thresholds, determines weighted factor.
In the present embodiment, multiple channel quality thresholds can be set, according to the channel quality of present channel and each letter The difference result of road quality threshold determines weighted factor.For example, in the present embodiment, it can be according to the channel matter of present channel Corresponding second channel when corresponding first channel quality thresholds, midpoint (in channel quality) when amount is with better (channel quality is excellent) Quality threshold is determined with the difference of third channel quality thresholds corresponding when not good enough (bad channel quality) in each channel quality Under corresponding weighted factor.It should be noted that channel quality it is excellent, in, difference judgement can be sentenced according to existing channel quality Disconnected rule and channel quality level division rule determine, the present embodiment to this with no restriction.In addition, also can also be according to practical feelings Condition such as determines corresponding multiple channel quality thresholds according to the grade classification situation of actual channel quality.
Step 106, correction result and the weighted factor are accumulated according to history AMC, determines AMC correction value.
In the present embodiment, history AMC accumulation correction result can be carried out according to determining weighted factor further excellent Change, obtains one closer to the AMC correction value for realizing that channel quality standard requires, and then according to the AMC correction value to terminal Data are scheduled.
Step 108, terminal data is scheduled according to the determining AMC correction value.
In the present embodiment, terminal data can be scheduled according to the determining AMC correction value, can be effectively adapted to Switching of the terminal in different business scene is avoided due to the continuous mobile caused history AMC accumulation correction result of terminal The problem of inaccuracy, AMC deviation after caused scene switching.
In conclusion a kind of Adaptive Modulation and Coding AMC method of adjustment described in the present embodiment, it can be according to present channel Channel quality and the first channel quality thresholds, second channel quality threshold and third channel quality thresholds difference, determine exist Corresponding weighted factor under each channel quality environment, and then according to determining weighted factor to each channel quality environment institute Corresponding history AMC accumulation correction result is modified, and obtains final AMC correction value, and using obtained AMC correction value into Row traffic scheduling.As it can be seen that in the present embodiment, when the channel quality of present channel is different or changes, the knot of AMC correction value Fruit is dynamic change, and in other words, determining AMC correction value can be according to the present channel where terminal through this embodiment Channel quality dynamic adjust so that the scene after the obtained AMC correction value of adjustment and terminal are mobile matches, guarantee AMC tune Whole accuracy.
Embodiment two
Referring to Fig. 2, a kind of step process of Adaptive Modulation and Coding AMC method of adjustment in the embodiment of the present invention two is shown Figure.In the present embodiment, the Adaptive Modulation and Coding AMC method of adjustment includes:
Step 202, the channel quality of the present channel of terminal is obtained.
Step 204, according to the channel quality of the present channel respectively with the first channel quality thresholds, second channel quality The difference of thresholding and third channel quality thresholds, determines weighted factor.
In the present embodiment, it is illustrated by taking the corresponding thresholding of three standard channel qualities as an example, other multiple standard letters The case where road quality determines weighted factor is referred to the process of three standard channel qualities of the present embodiment, and the present embodiment is not another One explanation.
Wherein, three standard channel qualities are respectively following three rank;The first excellent channel quality of channel quality, channel The third channel quality of second channel quality and bad channel quality in quality.The standard channel quality of above three rank is corresponding Thresholding be respectively as follows: the first channel quality thresholds, second channel quality threshold and third channel quality thresholds.It needs to illustrate It is that first channel quality thresholds, second channel quality threshold and third channel quality thresholds can be according to simulation result It is determining, be also possible to what technical staff determined based on practical experience, the present embodiment to this with no restriction.Specifically, Ke Yigen According to the channel quality of the present channel and the difference of the first channel quality thresholds, the first weighted factor is determined;And according to institute The channel quality of present channel and the difference of second channel quality threshold are stated, determines the second weighted factor;And worked as according to described The channel quality of preceding channel and the difference of third channel quality thresholds, determine third weighted factor.
Separately below to the first weighted factor.The specific determining process of second weighted factor and third weighted factor is said It is bright:
1, the first weighted factor is determined
It is in the present embodiment, described according to the channel quality of the present channel and the difference of the first channel quality thresholds, It determines the first weighted factor, can specifically include:
When the channel quality of the present channel and the difference of first channel quality thresholds are greater than the first difference threshold When, determine the first sub- weighted factor.
When the present channel channel quality and first channel quality thresholds difference be greater than the second difference threshold, When less than or equal to first difference threshold, the second sub- weighted factor is determined.
When the channel quality of the present channel and the difference of first channel quality thresholds are less than or equal to described second When difference threshold, the sub- weighted factor of third is determined.
Therefore in the present embodiment, when the channel quality of the present channel and first channel quality thresholds Difference when meeting various criterion, the specific value of the first weighted factor can be different, can be the first sub- weighted factor, Any value in second sub- weighted factor and the sub- weighted factor of third.It is, of course, also possible to according to the actual situation to difference standard into The finer division of row, the present embodiment to this with no restriction.Wherein, first difference threshold is greater than the second difference door Limit.
2, the second weighted factor is determined
In the present embodiment, the difference of the channel quality according to the present channel and second channel quality threshold, It determines the second weighted factor, can specifically include:
When the channel quality of the present channel and the difference of the second channel quality threshold are greater than third difference threshold When, determine the 4th sub- weighted factor.
When the present channel channel quality and the second channel quality threshold difference be greater than the 4th difference threshold, When less than or equal to the third difference threshold, the 5th sub- weighted factor is determined.
When the channel quality of the present channel and the difference of the second channel quality threshold are less than or equal to the described 4th When difference threshold, the 6th sub- weighted factor is determined.
Therefore in the present embodiment, when the channel quality of the present channel and the second channel quality threshold Difference when meeting various criterion, the specific value of the second weighted factor can be different, can be the 4th sub- weighted factor, Any value in 5th sub- weighted factor and the 6th sub- weighted factor.It is, of course, also possible to according to the actual situation to difference standard into The finer division of row, the present embodiment to this with no restriction.Wherein, the third difference threshold is greater than the 4th difference door Limit.
3, third weighted factor is determined
In the present embodiment, the difference of the channel quality according to the present channel and third channel quality thresholds, It determines third weighted factor, can specifically include:
When the channel quality of the present channel and the difference of the third channel quality thresholds are greater than the 5th difference threshold When, determine the 7th sub- weighted factor.
When the present channel channel quality and the third channel quality thresholds difference be greater than the 6th difference threshold, When less than or equal to five difference threshold, the 8th sub- weighted factor is determined.
When the channel quality of the present channel and the difference of the third channel quality thresholds are less than or equal to the described 6th When difference threshold, the 9th sub- weighted factor is determined.
Therefore in the present embodiment, when the channel quality of the present channel and the third channel quality thresholds Difference when meeting various criterion, the specific value of third weighted factor can be different, can be the 7th sub- weighted factor, Any value in 8th sub- weighted factor and the 9th sub- weighted factor.It is, of course, also possible to according to the actual situation to difference standard into The finer division of row, the present embodiment to this with no restriction.Wherein, the 5th difference threshold is greater than the 6th difference door Limit.
Step 206, correction result and the weighted factor are accumulated according to history AMC, determines AMC correction value.
In the present embodiment, the history AMC accumulation correction result includes: the first AMC accumulation correction result, the 2nd AMC It accumulates correction result and the 3rd AMC accumulates correction result;Wherein, the first AMC accumulation correction result can be above-mentioned channel Quality corresponding accumulation correction result, the 2nd AMC accumulation correction result can be corresponding accumulation in above-mentioned channel quality and repair Just as a result, the 3rd AMC accumulation correction result can be the corresponding accumulation correction result of above-mentioned bad channel quality, that is, the first AMC Corresponding first weighted factor of correction result is accumulated, the 2nd AMC accumulates corresponding second weighted factor of correction result, the 3rd AMC accumulation Correction result corresponds to third weighted factor.
Wherein, correction result and the weighted factor are being accumulated according to history AMC, it, specifically can be with when determining AMC correction value Including following three kinds of situations:
The the first sub- weighted factor or the second sub- weighted factor or third accumulating correction result according to history AMC and determining Sub- weighted factor determines AMC correction value.
The 4th sub- weighted factor or the 5th sub- weighted factor or the 6th accumulating correction result according to history AMC and determining Sub- weighted factor determines AMC correction value.
The 7th sub- weighted factor or the 8th sub- weighted factor or the 9th accumulating correction result according to history AMC and determining Sub- weighted factor determines AMC correction value
Specifically, the step 206 may include:
Sub-step 2062 determines product, the institute of the first AMC accumulation correction result and first weighted factor respectively State product, the 3rd AMC accumulation correction result and described the of the 2nd AMC accumulation correction result and second weighted factor The product of three weighted factors obtains corresponding first result of product, the second result of product and third result of product.
As described above, in the present embodiment, the first AMC accumulation correction result can correspond to the first weighted factor (described the The value of one weighted factor can be the first sub- weighted factor, the second sub- weighted factor and third determines according to actual conditions One of them in weighted factor), the 2nd AMC accumulation correction result can correspond to the second weighted factor (second weighting because The value of son can be the 4th sub- weighted factor, the 5th sub- weighted factor and the 6th sub- weighted factor determines according to actual conditions In one of them), the 3rd AMC accumulation correction result can correspond to the third weighted factor (value of the third weighted factor It can be in the 7th sub- weighted factor determines according to actual conditions, the 8th sub- weighted factor and the 9th sub- weighted factor wherein One).Certainly, it corresponds to situation and is not limited to that any one corresponded manner appropriate is that the present embodiment is protected Scheme.
For example, the first result of product=the first AMC accumulates the first weighted factor of correction result *, the second result of product=the Two AMC accumulate the second weighted factor of correction result *, the accumulation correction result * third weighting of third result of product=the 3rd AMC because Son.
Sub-step 2064, using the sum of first result of product, the second result of product and third result of product as described AMC correction value.
For example, AMC correction value=first the+the second result of product of result of product+third result of product.
Step 208, terminal data is scheduled according to the determining AMC correction value.
In the present embodiment, terminal data can be scheduled according to the determining AMC correction value, can be effectively adapted to Switching of the terminal in different business scene is avoided due to the continuous mobile caused history AMC accumulation correction result of terminal The problem of inaccuracy, AMC deviation after caused scene switching.
In conclusion a kind of Adaptive Modulation and Coding AMC method of adjustment described in the present embodiment, it can be according to present channel Channel quality and the first channel quality thresholds, second channel quality threshold and third channel quality thresholds difference, determine exist Corresponding weighted factor under each channel quality environment, and then according to determining weighted factor to each channel quality environment institute Corresponding history AMC accumulation correction result is modified, and obtains final AMC correction value, and using obtained AMC correction value into Row traffic scheduling.As it can be seen that in the present embodiment, when the channel quality of present channel is different or changes, the knot of AMC correction value Fruit is dynamic change, and in other words, determining AMC correction value can be according to the present channel where terminal through this embodiment Channel quality dynamic adjust so that the scene after the obtained AMC correction value of adjustment and terminal are mobile matches, guarantee AMC tune Whole accuracy.
Embodiment three
In conjunction with above-described embodiment, the present embodiment is with a specific example to the Adaptive Modulation and Coding AMC method of adjustment It is illustrated.
In the present embodiment, can be by channel quality it is excellent, in, that the corresponding history AMC of difference accumulates correction result is fixed respectively Justice are as follows: AMC1, AMC2 and AMC3;AMC correction value to be calculated is defined as AMC0;By the first weighted factor, second weighting because Son and third weighted factor are respectively defined as Func1, Func2 and Func3;By channel quality be it is excellent, in, the corresponding channel matter of difference Amount thresholding is respectively defined as: R1, R2 and R3.Wherein, AMC0=Func1*AMC1+Func2*AMC2+Func3*AMC3.
Referring to Fig. 3, a kind of step process of Adaptive Modulation and Coding AMC method of adjustment in the embodiment of the present invention three is shown Figure.The specific calculation process of AMC0 can be such that
Step 302, the present channel quality of terminal is obtained.
Step 304, according to the present channel quality, determine respectively channel quality be it is excellent, in, difference when corresponding weighting because Sub- Func1, Func2 and Func3.
Wherein:
The method of determination of Func1 can be such that
If ((present channel quality-R1) > N1)
Func1=0.01;
Else if (present channel quality-R1) > N2)
Func1=0.5;
Else
Func1=1.
Wherein, N1 and N2 is respectively preset constant difference threshold.
The method of determination of Func2 can be such that
If ((present channel quality-midpoint channel quality) > M1)
Func2=0.05;
Else if (present channel quality-midpoint channel quality) > M2)
Func2=0.7;
Else
Func2=1.
Wherein, M1 and M2 is respectively preset constant difference threshold.
The method of determination of Func3 can be such that
If ((the not good enough channel quality of present channel quality -) > P1)
Func3=0.01;
Else if (the not good enough channel quality of present channel quality -) > P2)
Func3=0.6;
Else
Func3=1.
Wherein, P1 and P2 is preset constant difference threshold.
Step 306, AMC0 is determined.
In the present embodiment, AMC0=Func1*AMC1+Func2*AMC2+Func2*AMC3;Wherein, Func1, Func2 The occurrence that above-mentioned steps 204 determine is referred to the value of Func3.
In conclusion a kind of Adaptive Modulation and Coding AMC method of adjustment described in the present embodiment, it can be according to present channel Channel quality and the first channel quality thresholds, second channel quality threshold and third channel quality thresholds difference, determine exist Corresponding weighted factor under each channel quality environment, and then according to determining weighted factor to each channel quality environment institute Corresponding history AMC accumulation correction result is modified, and obtains final AMC correction value, and using obtained AMC correction value into Row traffic scheduling.As it can be seen that in the present embodiment, when the channel quality of present channel is different or changes, the knot of AMC correction value Fruit is dynamic change, and in other words, determining AMC correction value can be according to the present channel where terminal through this embodiment Channel quality dynamic adjust so that the scene after the obtained AMC correction value of adjustment and terminal are mobile matches, guarantee AMC tune Whole accuracy.
It should be noted that for the aforementioned method embodiment, for simple description, therefore, it is stated as a series of Combination of actions, but those skilled in the art should understand that, the present invention is not limited by the sequence of acts described, because according to According to the present invention, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art should also know that, The embodiments described in the specification are all preferred embodiments, and related movement is not necessarily essential to the invention.
Example IV
Based on the same inventive concept of above method embodiment, referring to Fig. 4, show in the embodiment of the present invention four it is a kind of from Adapt to the structural block diagram of modulating-coding AMC adjustment system.In the present embodiment, the Adaptive Modulation and Coding AMC adjusts system, Include:
Obtain module 402, the channel quality of the present channel for obtaining terminal.
First determining module 404, for according to the channel quality of the present channel respectively with the first channel quality thresholds, The difference of second channel quality threshold and third channel quality thresholds, determines weighted factor.
Second determining module 406 determines that AMC is corrected for accumulating correction result and the weighted factor according to history AMC Value.
Scheduler module 408, for being scheduled according to the determining AMC correction value to terminal data.
In a preferred embodiment of the present embodiment, referring to Fig. 5, show a kind of preferred adaptive in the embodiment of the present invention four Answer the structural block diagram of modulating-coding AMC adjustment system.
Preferably, first determining module 404 can specifically include: first determines submodule 4042, for according to institute The channel quality of present channel and the difference of the first channel quality thresholds are stated, determines the first weighted factor;Second determines submodule 4044, for determining the second weighted factor according to the channel quality of the present channel and the difference of second channel quality threshold; Third determines submodule 4046, for the channel quality and the difference of third channel quality thresholds according to the present channel, really Determine third weighted factor.
One is preferred, referring to Fig. 6, shows the structural representation that one kind first in the embodiment of the present invention four determines submodule Figure.Preferably, described first determine that submodule 4042 can specifically include: first determines subelement 40422, for working as described When the difference of the channel quality of preceding channel and first channel quality thresholds is greater than the first difference threshold, the first son weighting is determined The factor;Second determines subelement 40424, in the present channel channel quality and first channel quality thresholds When difference is greater than the second difference threshold, is less than or equal to first difference threshold, the second sub- weighted factor is determined;Third determines son Unit 40426, the difference for channel quality and first channel quality thresholds in the present channel are less than or equal to institute When stating the second difference threshold, the sub- weighted factor of third is determined;Wherein, first difference threshold is greater than the second difference door Limit.
Correspondingly, second determining module 406 specifically can be used for accumulating correction result and determination according to history AMC The first sub- weighted factor or the second sub- weighted factor or the sub- weighted factor of third, determine AMC correction value.
It is another preferred, referring to Fig. 7, show the structural representation that one kind second in the embodiment of the present invention four determines submodule Figure.Preferably, described second determine that submodule 4044 can specifically include: the 4th determines subelement 40442, for working as described When the difference of the channel quality of preceding channel and the second channel quality threshold is greater than third difference threshold, the 4th son weighting is determined The factor;5th determines subelement 40444, in the present channel channel quality and the second channel quality threshold When difference is greater than the 4th difference threshold, is less than or equal to the third difference threshold, the 5th sub- weighted factor is determined;6th determines son Unit 40446, the difference for channel quality and the second channel quality threshold in the present channel are less than or equal to institute When stating four difference thresholds, the 6th sub- weighted factor is determined;Wherein, the third difference threshold is greater than the 4th difference door Limit.
Correspondingly, second determining module 406 specifically can be used for accumulating correction result and determination according to history AMC The 4th sub- weighted factor or the 5th sub- weighted factor or the 6th sub- weighted factor, determine AMC correction value.
It is another preferred, referring to Fig. 8, show the structural representation that a kind of third in the embodiment of the present invention four determines submodule Figure.Preferably, the third determines that submodule 4046 can specifically include: the 7th determines subelement 40462, for working as described When the difference of the channel quality of preceding channel and the third channel quality thresholds is greater than five difference thresholds, the 7th son weighting is determined The factor;8th determines subelement 40464, in the present channel channel quality and the third channel quality thresholds When difference is greater than the 6th difference threshold, is less than or equal to five difference threshold, the 8th sub- weighted factor is determined;9th determines son Unit 40466, the difference for channel quality and the third channel quality thresholds in the present channel are less than or equal to institute When stating six difference thresholds, the 9th sub- weighted factor is determined;Wherein, the 5th difference threshold is greater than the 6th difference door Limit.
Correspondingly, second determining module 406 specifically can be used for accumulating correction result and determination according to history AMC The 7th sub- weighted factor or the 8th sub- weighted factor or the 9th sub- weighted factor, determine AMC correction value.
It should be noted that in the present embodiment, the history AMC accumulation correction result includes but are not limited to: first AMC accumulates correction result, the 2nd AMC accumulation correction result and the 3rd AMC and accumulates correction result.Correspondingly, it described second determines Module 406 can specifically include: the 4th determines submodule 4062, for determine respectively the first AMC accumulation correction result with The product of first weighted factor, the product of the 2nd AMC accumulation correction result and second weighted factor, described the Three AMC accumulate the product of correction result and the third weighted factor, obtain corresponding first result of product, the second result of product With third result of product;5th determines submodule 4064, for multiplying first result of product, the second result of product and third The sum of product result is as the AMC correction value.
In conclusion a kind of Adaptive Modulation and Coding AMC adjustment system described in the present embodiment, it can be according to present channel Channel quality and the first channel quality thresholds, second channel quality threshold and third channel quality thresholds difference, determine exist Corresponding weighted factor under each channel quality environment, and then according to determining weighted factor to each channel quality environment institute Corresponding history AMC accumulation correction result is modified, and obtains final AMC correction value, and using obtained AMC correction value into Row traffic scheduling.As it can be seen that in the present embodiment, when the channel quality of present channel is different or changes, the knot of AMC correction value Fruit is dynamic change, and in other words, determining AMC correction value can be according to the present channel where terminal through this embodiment Channel quality dynamic adjust so that the scene after the obtained AMC correction value of adjustment and terminal are mobile matches, guarantee AMC tune Whole accuracy.
For device embodiment, since it is basically similar to the method embodiment, related so being described relatively simple Place illustrates referring to the part of embodiment of the method.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.
Detailed Jie has been carried out to a kind of Adaptive Modulation and Coding AMC method of adjustment provided by the present invention and system above It continues, used herein a specific example illustrates the principle and implementation of the invention, and the explanation of above embodiments is only It is to be used to help understand method and its core concept of the invention;At the same time, for those skilled in the art, according to this hair Bright thought, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not manage Solution is limitation of the present invention.

Claims (12)

1. a kind of Adaptive Modulation and Coding AMC method of adjustment characterized by comprising
Obtain the channel quality of the present channel of terminal;
Believed respectively with the first channel quality thresholds, second channel quality threshold and third according to the channel quality of the present channel The difference of road quality threshold, determines weighted factor;
Correction result and the weighted factor are accumulated according to history AMC, determines AMC correction value;
Terminal data is scheduled according to the determining AMC correction value;
Wherein, first channel quality thresholds are the excellent corresponding channel quality of channel quality, the second channel quality threshold It is corresponding channel quality in channel quality, the third channel quality thresholds are the corresponding channel qualities of bad channel quality;
The determining weighted factor comprises determining that the first weighted factor, the second weighted factor and third weighted factor.
2. the method according to claim 1, wherein the channel quality according to the present channel respectively with The difference of first channel quality thresholds, second channel quality threshold and third channel quality thresholds, determines weighted factor;Include:
According to the difference of the channel quality of the present channel and the first channel quality thresholds, first weighted factor is determined;
According to the difference of the channel quality of the present channel and second channel quality threshold, second weighted factor is determined;
According to the difference of the channel quality of the present channel and third channel quality thresholds, the third weighted factor is determined.
3. according to the method described in claim 2, it is characterized in that, described according to the channel quality of the present channel and first The difference of channel quality thresholds determines the first weighted factor, comprising:
When the difference of the channel quality of the present channel and first channel quality thresholds is greater than the first difference threshold, really Fixed first sub- weighted factor;
When the present channel channel quality and first channel quality thresholds difference be greater than the second difference threshold, be less than When equal to first difference threshold, the second sub- weighted factor is determined;
When the channel quality of the present channel and the difference of first channel quality thresholds are less than or equal to second difference When thresholding, the sub- weighted factor of third is determined;
Wherein, first difference threshold is greater than second difference threshold;
Correspondingly, described that correction result and the weighted factor are accumulated according to history AMC, determine AMC correction value, comprising:
The the first sub- weighted factor or the second sub- weighted factor or third accumulating correction result according to history AMC and determining add Weight factor determines AMC correction value.
4. according to the method described in claim 2, it is characterized in that, described according to the channel quality of the present channel and second The difference of channel quality thresholds determines the second weighted factor, comprising:
When the difference of the channel quality of the present channel and the second channel quality threshold is greater than third difference threshold, really Fixed 4th sub- weighted factor;
When the present channel channel quality and the second channel quality threshold difference be greater than the 4th difference threshold, be less than When equal to the third difference threshold, the 5th sub- weighted factor is determined;
When the channel quality of the present channel and the difference of the second channel quality threshold are less than or equal to the 4th difference When thresholding, the 6th sub- weighted factor is determined;
Wherein, the third difference threshold is greater than the 4th difference threshold;
Correspondingly, described that correction result and the weighted factor are accumulated according to history AMC, determine AMC correction value, comprising:
Correction result and the 4th sub- weighted factor or the 5th sub- weighted factor that determine are accumulated according to history AMC or the 6th son adds Weight factor determines AMC correction value.
5. according to the method described in claim 2, it is characterized in that, the channel quality and third according to the present channel The difference of channel quality thresholds determines third weighted factor, comprising:
When the difference of the channel quality of the present channel and the third channel quality thresholds is greater than five difference thresholds, really Fixed 7th sub- weighted factor;
When the present channel channel quality and the third channel quality thresholds difference be greater than the 6th difference threshold, be less than When equal to five difference threshold, the 8th sub- weighted factor is determined;
When the channel quality of the present channel and the difference of the third channel quality thresholds are less than or equal to the 6th difference When thresholding, the 9th sub- weighted factor is determined;
Wherein, the 5th difference threshold is greater than the 6th difference threshold;
Correspondingly, described that correction result and the weighted factor are accumulated according to history AMC, determine AMC correction value, comprising:
Correction result and the 7th sub- weighted factor or the 8th sub- weighted factor that determine are accumulated according to history AMC or the 9th son adds Weight factor determines AMC correction value.
6. according to the described in any item methods of claim 2-5, which is characterized in that the history AMC accumulates correction result and includes: First AMC accumulates correction result, the 2nd AMC accumulation correction result and the 3rd AMC and accumulates correction result;
Wherein, described that correction result and the weighted factor are accumulated according to history AMC, determine AMC correction value, comprising:
It determines that the first AMC accumulation correction result is accumulated with the product of first weighted factor, the 2nd AMC respectively to repair Positive result and the product of second weighted factor, the 3rd AMC accumulation correction result multiply with the third weighted factor Product, obtains corresponding first result of product, the second result of product and third result of product;
Using the sum of first result of product, the second result of product and third result of product as the AMC correction value.
7. a kind of Adaptive Modulation and Coding AMC adjusts system characterized by comprising
Obtain module, the channel quality of the present channel for obtaining terminal;
First determining module, for being believed respectively with the first channel quality thresholds, second according to the channel quality of the present channel The difference of road quality threshold and third channel quality thresholds, determines weighted factor;
Second determining module determines AMC correction value for accumulating correction result and the weighted factor according to history AMC;
Scheduler module, for being scheduled according to the determining AMC correction value to terminal data;
Wherein, first channel quality thresholds are the excellent corresponding channel quality of channel quality, the second channel quality threshold It is corresponding channel quality in channel quality, the third channel quality thresholds are the corresponding channel qualities of bad channel quality;
The determining weighted factor comprises determining that the first weighted factor, the second weighted factor and third weighted factor.
8. system according to claim 7, which is characterized in that first determining module, comprising:
First determines submodule, for according to the channel quality of the present channel and the difference of the first channel quality thresholds, really Fixed first weighted factor;
Second determines submodule, for the channel quality and the difference of second channel quality threshold according to the present channel, really Fixed second weighted factor;
Third determines submodule, for the channel quality and the difference of third channel quality thresholds according to the present channel, really The fixed third weighted factor.
9. system according to claim 8, which is characterized in that described first determines submodule, comprising:
First determines subelement, and the difference for channel quality and first channel quality thresholds in the present channel is big When the first difference threshold, the first sub- weighted factor is determined;
Second determines subelement, and the difference for channel quality and first channel quality thresholds in the present channel is big When the second difference threshold, being less than or equal to first difference threshold, the second sub- weighted factor is determined;
Third determines subelement, and the difference for channel quality and first channel quality thresholds in the present channel is small When being equal to second difference threshold, the sub- weighted factor of third is determined;
Wherein, first difference threshold is greater than second difference threshold;
Correspondingly, second determining module, for according to history AMC accumulate correction result and determine first son weighting because Son or the second sub- weighted factor or the sub- weighted factor of third, determine AMC correction value.
10. system according to claim 8, which is characterized in that described second determines submodule, comprising:
4th determines subelement, and the difference for channel quality and the second channel quality threshold in the present channel is big When third difference threshold, the 4th sub- weighted factor is determined;
5th determines subelement, and the difference for channel quality and the second channel quality threshold in the present channel is big When the 4th difference threshold, being less than or equal to the third difference threshold, the 5th sub- weighted factor is determined;
6th determines subelement, and the difference for channel quality and the second channel quality threshold in the present channel is small When being equal to four difference threshold, the 6th sub- weighted factor is determined;
Wherein, the third difference threshold is greater than the 4th difference threshold;
Correspondingly, second determining module, for according to history AMC accumulate correction result and determine the 4th son weighting because Son or the 5th sub- weighted factor or the 6th sub- weighted factor, determine AMC correction value.
11. system according to claim 8, which is characterized in that the third determines submodule, comprising:
7th determines subelement, and the difference for channel quality and the third channel quality thresholds in the present channel is big When five difference thresholds, the 7th sub- weighted factor is determined;
8th determines subelement, and the difference for channel quality and the third channel quality thresholds in the present channel is big When the 6th difference threshold, being less than or equal to five difference threshold, the 8th sub- weighted factor is determined;
9th determines subelement, and the difference for channel quality and the third channel quality thresholds in the present channel is small When being equal to six difference threshold, the 9th sub- weighted factor is determined;
Wherein, the 5th difference threshold is greater than the 6th difference threshold;
Correspondingly, second determining module, for according to history AMC accumulate correction result and determine the 7th son weighting because Son or the 8th sub- weighted factor or the 9th sub- weighted factor, determine AMC correction value.
12. according to the described in any item systems of claim 8-11, which is characterized in that the history AMC accumulates correction result packet Include: the first AMC accumulates correction result, the 2nd AMC accumulation correction result and the 3rd AMC accumulation correction result;
Wherein, second determining module, comprising:
4th determines submodule, for determining multiplying for the first AMC accumulation correction result and first weighted factor respectively The product of long-pending, described 2nd AMC accumulation correction result and second weighted factor, the 3rd AMC accumulation correction result with The product of the third weighted factor obtains corresponding first result of product, the second result of product and third result of product;5th Submodule is determined, for repairing the sum of first result of product, the second result of product and third result of product as the AMC Positive value.
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