CN106921465B - CQI threshold regulating method and device - Google Patents
CQI threshold regulating method and device Download PDFInfo
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- CN106921465B CN106921465B CN201510997818.XA CN201510997818A CN106921465B CN 106921465 B CN106921465 B CN 106921465B CN 201510997818 A CN201510997818 A CN 201510997818A CN 106921465 B CN106921465 B CN 106921465B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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- Quality & Reliability (AREA)
- Computer Networks & Wireless Communication (AREA)
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- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
A kind of CQI threshold regulating method and device, which comprises use the information of the signal quality of the corresponding each CQI gear of sliding window method statistical signal；According to the corresponding filtering factor of each CQI gear, the information of the signal quality of each CQI gear is filtered；The information of the signal quality of filtered each CQI gear is compared with the information of the preset signals quality of respective notch respectively, obtains comparison result, choosing CQI gear corresponding to the value of maximum absolute value in the comparison result is k-th of gear；Respectively according to kth -1, the comparison result of k-th and+1 CQI gear of kth, corresponding adjusting step is calculated；According to the relationship of the adjusting step and default adjusting step, the thresholding of k-th of CQI gear is correspondingly adjusted.The accuracy of CQI thresholding adjustment can be improved using the above scheme.
Description
Technical field
The present invention relates to the communications field more particularly to a kind of CQI threshold regulating methods and device.
Background technique
In Modern Communication System, user equipment usually requires that signal quality is reported to indicate (Channel Quality
Indicator, CQI) base station is given, so that base station can be according to the CQI, and refer to modulating-coding table (Modulation
And Coding Scheme, MCS) determination data modulation mode and transmission rate.Usual user equipment (User
Equipment, UE) by assessing channel quality, obtain such as signal-to-noise ratio (SIGNAL-NOISE RATIO, SNR) and
Mutual information (Mutual Information, MI) etc. reflects the parameter of channel quality, then obtains the parameter value with emulation
Threshold value be compared, obtain final CQI.
Since the performance of UE depends on the several factors such as channel estimation errors and noise estimation error, and these errors are not
Difference is showed under same external condition, so the emulation thresholding of CQI can exist in some cases and receiver performance mismatches
The case where.
Currently, the Block Error Rate that UE lateral root obtains according to statistics carries out unified adjustment to the thresholding of CQI gear.
But make to adjust CQI thresholding with the aforedescribed process, it may cause the table tennis adjustment effect occurred repeatedly, adjustment
Accuracy is low.
Summary of the invention
Problems solved by the invention is how to improve the accuracy of CQI thresholding adjustment.
To solve the above problems, the present invention provides a kind of CQI threshold regulating method, the CQI is provided with N number of gear, often
The corresponding thresholding of a gear, the thresholding of the CQI increase with the raising of gear, which comprises
Signal is received, and counts total signal quality information of the signal；
When the quantity of the signal is greater than preset first threshold value, and total signal quality information is greater than default second threshold
When value, the information of the signal quality of the corresponding each CQI gear of the signal is counted using sliding window method；
According to the information of the signal quality of each CQI gear, for each CQI gear be arranged corresponding filtering because
Son；
According to the corresponding filtering factor of each CQI gear, to the information of the signal quality of each CQI gear into
Row filtering, obtains the information of the signal quality of filtered each CQI gear；
By the information of the signal quality of filtered each CQI gear respectively with the preset signals quality of respective notch
Information be compared, obtain comparison result, choosing CQI gear corresponding to the value of maximum absolute value in the comparison result is
K-th of gear, k are the sequence of gear, and N >=k >=1；
Respectively according to kth -1, the comparison result of k-th and+1 CQI gear of kth, the kth -1 is calculated
The first adjustment step-length corresponding to a CQI gear, second adjustment step-length corresponding to k-th of CQI gear, the kth+1
Third adjusting step corresponding to a CQI gear；
According to the relationship of first, second and third adjusting step and default adjusting step, judge whether to be arranged to institute
State kth -1, the state that the CQI thresholding of+1 gear of kth and kth is adjusted is true；
The state setting being adjusted according to the CQI thresholding to+1 kth -1, kth and kth gear is as a result, corresponding
Ground adjusts the thresholding of k-th of CQI gear.
Optionally, the relationship according to first, second and third adjusting step and default adjusting step, judgement be
The no state being adjusted to the CQI thresholding of+1 kth -1, kth and kth gear that is arranged is true, comprising:
When the first adjustment step-length is greater than the default adjusting step, the door to -1 CQI gear of the kth is set
It is true for limiting the state being adjusted；
When the second adjustment step-length is greater than the default adjusting step, the thresholding to k-th of CQI gear is set
The state being adjusted is true；
When the third adjusting step is greater than the default adjusting step, the door to+1 CQI gear of the kth is set
It is true for limiting the state being adjusted.
Optionally, the state that the basis is adjusted the CQI thresholding of+1 kth -1, kth and kth gear is set
It sets as a result, correspondingly adjusting the thresholding of k-th of CQI gear, comprising:
When the state that the CQI thresholding of corresponding gear adjusts is true, according to the CQI gear from high to low sequence, according to
The step of secondary execution is adjusted the thresholding of the CQI.
Optionally, the state that the basis is adjusted the CQI thresholding of+1 kth -1, kth and kth gear is set
It sets as a result, correspondingly adjusting the thresholding of k-th of CQI gear, comprising:
When state of the setting to the CQI thresholding adjustment of+1 gear of the kth is true, judge to adjust according to the third
The CQI thresholding of step-length+1 gear of the kth adjusted, with described k-th adjusted according to the second adjustment step-length
Whether the difference of gear CQI thresholding is greater than default third threshold value；
When the CQI thresholding and the difference of k-th of gear CQI thresholding of described+1 gear of the kth adjusted are big
When the third threshold value, the CQI thresholding of kth+1 to N number of gear is adjusted according to the third adjusting step；
When the CQI thresholding and the difference of k-th of gear CQI thresholding of described+1 gear of the kth adjusted are small
When the third threshold value, the CQI thresholding of N number of gear is not adjusted.
Optionally, the state that the basis is adjusted the CQI thresholding of+1 kth -1, kth and kth gear is set
It sets as a result, correspondingly adjusting the thresholding of k-th of CQI gear, comprising:
When state of the setting to the CQI thresholding adjustment of k-th of gear is true, the second adjustment step-length is being judged just
It is negative；
When the second adjustment step-length be timing, will be according to the CQI of the second adjustment step-length k-th of gear adjusted
Thresholding, the difference with the CQI thresholding according to the third adjusting step+1 gear of kth adjusted, is worth as a comparison；
It, will be according to the CQI of the second adjustment step-length k-th of gear adjusted when the second adjustment step-length is negative
Thresholding, the difference with the CQI thresholding according to the first adjustment step-length -1 gear of kth adjusted, is worth as a comparison；
Reduced value is preset when the reduced value is greater than, and has determined that the CQI thresholding to -1 gear of the kth+1 and kth
When being adjusted, the CQI thresholding of k-th of gear is adjusted according to the second adjustment step-length；
When the reduced value is greater than the default reduced value, and have determined that not to -1 gear of the kth+1 or kth
When CQI thresholding is adjusted, the CQI thresholding of N number of gear is adjusted according to the second adjustment step-length；
It is less than the default reduced value when meeting the reduced value, and has determined that -1 gear of the kth+1 and kth
When CQI thresholding is adjusted, the CQI thresholding of k-th of gear is not adjusted；
It is less than the default reduced value when meeting the reduced value, and has determined that not to -1 gear of the kth+1 or kth
CQI thresholding when being adjusted, if the second adjustment step-length is positive, by the CQI thresholding of kth to N number of gear according to described
Second adjustment step-length is adjusted, if the second adjustment step-length is negative, by the CQI thresholding of the 1st to k gear according to described
Second adjustment step-length is adjusted.
Optionally, the basis is made whether setting for adjustment to the CQI thresholding of+1 kth -1, kth and kth gear
It sets as a result, correspondingly adjusting the thresholding of k-th of CQI gear, comprising:
When state of the setting to the CQI thresholding adjustment of -1 gear of kth is true, by the 1st to -1 gear of kth CQI
Thresholding is adjusted according to the first adjustment step-length.
Optionally, the method also includes: when to any gear CQI thresholding adjustment after, will be described CQI adjusted
It limits corresponding statistical information and count information is initialized to zero.
Optionally, the information of the signal quality is Block Error Rate.
Optionally, the N is 15.
The embodiment of the invention provides a kind of CQI thresholdings to adjust device, and the CQI is provided with N number of gear, each gear pair
A thresholding is answered, the thresholding of the CQI increases with the raising of gear, and described device includes:
Receiving unit is suitable for receiving signal；
First statistic unit, suitable for counting total signal quality information of the signal；
Second statistic unit is greater than preset first threshold value, and total signal quality suitable for the quantity when the signal
When information is greater than default second threshold, the letter of the signal quality of the corresponding each CQI gear of the signal is counted using sliding window method
Breath；
Filtering factor setting unit is described each suitable for the information according to the signal quality of each CQI gear
Corresponding filtering factor is arranged in CQI gear；
Filter unit is suitable for according to the corresponding filtering factor of each CQI gear, to the letter of each CQI gear
The information of number quality is filtered, and obtains the information of the signal quality of filtered each CQI gear；
Comparing unit, suitable for by the information of the signal quality of filtered each CQI gear respectively with respective notch
The information of preset signals quality be compared, obtain comparison result；
Selection unit is k-th grade suitable for choosing CQI gear corresponding to the value of maximum absolute value in the comparison result
Position, k are the sequence of gear, and N >=k >=1；
Computing unit, suitable for according to kth -1, the comparison result of k-th and+1 CQI gear of kth, calculating respectively
Obtain the first adjustment step-length corresponding to -1 CQI gear of the kth, the step of second adjustment corresponding to k-th of CQI gear
It is long, third adjusting step corresponding to+1 CQI gear of the kth；
State set unit, suitable for the relationship according to first, second and third adjusting step and default adjusting step,
Judge whether that it is true that the state being adjusted to the CQI thresholding of+1 kth -1, kth and kth gear, which is arranged,；
Adjustment unit, suitable for according to the state being adjusted to the CQI thresholding of+1 kth -1, kth and kth gear
It is arranged as a result, correspondingly adjusting the thresholding of k-th of CQI gear.
Optionally, the state set unit, comprising:
Subelement is arranged in first state, is suitable for the setting when the first adjustment step-length is greater than the default adjusting step
The state being adjusted to the thresholding of -1 CQI gear of the kth is true；
Subelement is arranged in second state, is suitable for the setting when the second adjustment step-length is greater than the default adjusting step
The state being adjusted to the thresholding of k-th of CQI gear is true；
Subelement is arranged in the third state, is suitable for the setting when the third adjusting step is greater than the default adjusting step
The state being adjusted to the thresholding of+1 CQI gear of the kth is true.
Optionally, the adjustment unit, when the state suitable for the CQI thresholding adjustment in corresponding gear is true, according to described
CQI gear successively executes the step of being adjusted to the thresholding of the CQI from high to low sequence.
Optionally, the adjustment unit, comprising:
First judgment sub-unit, when the state suitable for adjusting when CQI thresholding of the setting to+1 gear of the kth is true,
Judge the CQI thresholding according to the third adjusting step+1 gear of the kth adjusted, is walked with according to the second adjustment
Whether the difference of long k-th of gear CQI thresholding adjusted is greater than default third threshold value；
The first adjustment subelement, suitable for when the CQI thresholding of described+1 gear of the kth adjusted and described k-th
When the difference of gear CQI thresholding is greater than the third threshold value, by the CQI thresholding of kth+1 to N number of gear according to the third tune
Synchronizing length is adjusted, when the CQI thresholding and k-th of gear CQI thresholding of described+1 gear of the kth adjusted
When difference is less than the third threshold value, the CQI thresholding of N number of gear is not adjusted.
Optionally, the adjustment unit, comprising:
Second judgment sub-unit, suitable for judging institute when state of the setting to the CQI thresholding adjustment of k-th of gear is true
State the positive and negative of second adjustment step-length；
Reduced value computation subunit is suitable for when the second adjustment step-length being timing, will be according to the second adjustment step-length
The CQI thresholding of k-th of gear adjusted, with the CQI thresholding according to the third adjusting step+1 gear of kth adjusted
Difference, be worth as a comparison, will be according to the second adjustment step-length kth adjusted when the second adjustment step-length is negative
The CQI thresholding of a gear, the difference with the CQI thresholding according to the first adjustment step-length -1 gear of kth adjusted, as
Reduced value；
Second adjustment subelement is suitable for being greater than default reduced value when the reduced value, and has determined that the kth+1 and the
When the CQI thresholding of k-1 gear is adjusted, the CQI door of k-th of gear is adjusted according to the second adjustment step-length
Limit and has determined that not to the CQI thresholding of -1 gear of the kth+1 or kth when the reduced value is greater than the default reduced value
When being adjusted, the CQI thresholding of N number of gear is adjusted according to the second adjustment step-length；
Third adjusts subelement, meets the reduced value less than the default reduced value suitable for working as, and have determined that described
When the CQI thresholding of -1 gear of kth+1 and kth is adjusted, the CQI thresholding of k-th of gear is not adjusted, when
Meet the reduced value less than the default reduced value, and has determined that not to the CQI thresholding of -1 gear of the kth+1 or kth
When being adjusted, if the second adjustment step-length is positive, the CQI thresholding of kth to N number of gear is walked according to the second adjustment
Length is adjusted, if the second adjustment step-length is negative, the CQI thresholding of the 1st to k gear is walked according to the second adjustment
Length is adjusted.
Optionally, the adjustment unit, comprising:
4th adjustment subelement, when the state suitable for adjusting when CQI thresholding of the setting to -1 gear of kth is true, by the 1st
CQI thresholding to -1 gear of kth is adjusted according to the first adjustment step-length.
Optionally, described device further include:
Initialization unit, suitable for after the CQI thresholding to any gear adjusts, the CQI thresholding adjusted is corresponded to
Statistical information and count information initialize to zero.
Optionally, the information of the signal quality is Block Error Rate.
Optionally, the N is 15.
Compared with prior art, technical solution of the present invention has the advantage that
By by the information of the signal quality of filtered each CQI gear respectively with the preset signals quality of respective notch
Information be compared, obtain comparison result, choosing CQI gear corresponding to the value of maximum absolute value in the comparison result is
K-th of gear then accordingly calculates it according to kth -1, the comparison result of k-th and+1 CQI gear of kth respectively
Corresponding adjusting step, and judge whether to be arranged and the CQI thresholding of+1 kth -1, kth and kth gear is adjusted
State be it is true, then correspondingly adjust the thresholding of k-th of CQI gear, by thus according to it is actually detected to signal quality
Information and preset signal quality information relationship, accordingly determine being sized for gear CQI thresholding, avoid directly it is right
The thresholding of each gear CQI carries out unified adjustment, can more targetedly be adjusted to CQI thresholding, therefore can be anti-
Multiple table tennis adjustment effect improves the accuracy of CQI thresholding adjustment.
Detailed description of the invention
Fig. 1 is the flow diagram of the method for one of embodiment of the present invention CQI thresholding adjustment；
Fig. 2 is the structural schematic diagram of one of embodiment of the present invention CQI thresholding adjustment device；
Fig. 3 is the structural schematic diagram of the device of another CQI thresholding adjustment in the embodiment of the present invention.
Specific embodiment
Since the performance of UE depends on the several factors such as channel estimation errors and noise estimation error, and these errors are not
Difference is showed under same external condition, so the emulation thresholding of CQI can exist in some cases and receiver performance mismatches
The case where.Currently, the Block Error Rate that UE lateral root obtains according to statistics carries out unified adjustment to the thresholding of CQI gear.
But make to adjust CQI thresholding with the aforedescribed process, it may cause the table tennis adjustment effect occurred repeatedly, and adjust
Accuracy it is low.
To solve the above problems, the embodiment of the invention provides CQI thresholding adjustment method, by will it is filtered each
The information of the signal quality of CQI gear is compared with the information of the preset signals quality of respective notch respectively, obtains comparing knot
Fruit, choosing in the comparison result CQI gear corresponding to the value of maximum absolute value is k-th of gear, then respectively according to the
The comparison result of k-1, k-th and+1 CQI gear of kth, accordingly calculate its corresponding adjusting step, and judge whether
It is true for being arranged to the state that the CQI thresholding of+1 kth -1, kth and kth gear is adjusted, and then correspondingly adjusts institute
The thresholding for stating k-th of CQI gear, by thus according to it is actually detected to signal quality information and preset signal quality letter
The relationship of breath accordingly determines being sized for gear CQI thresholding, avoids directly carrying out unification to the thresholding of each gear CQI
Adjustment, more targetedly CQI thresholding can be adjusted, thus can table tennis adjustment effect repeatedly, improve CQI
Limit the accuracy of adjustment.
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
Referring to Fig.1, in an embodiment of the present invention, CQI threshold value can be adjusted using following method:
In specific implementation, for convenience of description, if CQI is provided with N number of gear, the corresponding thresholding of each gear is described
The thresholding of CQI increases with the raising of gear.
S11: signal is received, and counts total signal quality information of the signal.
In specific implementation, it in order to know the quality condition of channel, can receive signal, and count the total of the signal
Signal quality information.
In specific implementation, the information of the signal quality can be Block Error Rate.Certainly, the information of the signal quality is also
It can be the parameter of other quality that can reflect signal, those skilled in the art can carry out correspondingly according to the actual situation
Setting.The design parameter of the information meaning of signal quality, does not limit the present invention in any way.
In specific implementation, the N can be 15.
S12: when the quantity of the signal is greater than preset first threshold value, and total signal quality information is greater than default the
When two threshold values, the information of the signal quality of the corresponding each CQI gear of the signal is counted using sliding window method.
In specific implementation, when the quantity of the signal is greater than preset first threshold value, and total signal quality information
When greater than default second threshold, the letter that sliding window method counts the signal quality of the corresponding each CQI gear of the signal can be used
Breath.So, so that it may under the premise of guaranteeing channel quality, by the practical reception condition according to signal, adjust sliding window
Size, to take into account the speed of balanced signal transmission.
S13: according to the information of the signal quality of each CQI gear, corresponding filter is set for each CQI gear
The wave factor.
In specific implementation, since the statistics of the information of the signal quality to each CQI gear has real-time and randomness,
In order to improve signal quality information accuracy, can be directed to according to the information of the signal quality of each CQI gear
Property for each CQI gear, corresponding filtering factor is set.
S14: according to the corresponding filtering factor of each CQI gear, to the letter of the signal quality of each CQI gear
Breath is filtered, and obtains the information of the signal quality of filtered each CQI gear.
It is being embodied, filtering factor obtained in S13 can be used, to the signal quality of each CQI gear
Information is filtered, and so, the information of the quality for the CQI gear that statistics can be made to obtain is more smooth.
S15: by the information of the signal quality of filtered each CQI gear respectively with the preset signals of respective notch
The information of quality is compared, and obtains comparison result, chooses in the comparison result CQI corresponding to the value of maximum absolute value grades
Position is k-th of gear, and k is the sequence of gear, and N >=k >=1.
It in specific implementation, can be by filtered each CQI gear in order to know the signal condition of CQI gear
The information of signal quality be compared respectively with the information of the preset signals quality of respective notch, obtain N number of comparison result, and
And from N number of comparison result, CQI gear corresponding to the value of maximum absolute value in N number of comparison result is chosen, in this way
As soon as having found the worst CQI gear of signal.For convenience of description, it can be assumed that maximum absolute value in N number of comparison result
Value corresponding to gear be k-th of gear, k is the sequence of gear, and N >=k >=1.
S16: it respectively according to kth -1, the comparison result of k-th and+1 CQI gear of kth, is calculated described
The first adjustment step-length corresponding to -1 CQI gear of kth, second adjustment step-length corresponding to k-th of CQI gear are described
Third adjusting step corresponding to+1 CQI gear of kth.
In specific implementation, it is influenced since the gear on each CQI gear periphery has the CQI thresholding of the gear, therefore
After having chosen the CQI thresholding of k-th of gear as regulating object, it can calculate what the needs of the gear on its periphery were adjusted
Degree, specifically, it is right that -1 CQI gear institute of the kth can be calculated according to the comparison result of -1 CQI gear of kth
K-th of CQI gear is calculated then according to the comparison result of k-th of CQI gear in the first adjustment step-length answered
Corresponding second adjustment step-length, and according to the comparison result of+1 CQI gear of the kth, the kth+1 is calculated
Third adjusting step corresponding to CQI gear.
S17: according to the relationship of first, second and third adjusting step and default adjusting step, judge whether to be arranged
The state being adjusted to the CQI thresholding of+1 kth -1, kth and kth gear is true.
In specific implementation, due to the relationship of the adjusting step of each CQI gear and default adjusting step, it can reflect institute
The appropriate level of the thresholding of CQI gear is stated, therefore can be according to first, second and third adjusting step and default adjusting step
Relationship, judge whether that it is true that the state being adjusted to the CQI thresholding of+1 kth -1, kth and kth gear, which is arranged,.
In an embodiment of the present invention, it when the first adjustment step-length is greater than the default adjusting step, can be set
The state being adjusted to the thresholding of -1 CQI gear of the kth is true.
In an alternative embodiment of the invention, when the second adjustment step-length is greater than the default adjusting step, Ke Yishe
It is true for setting the state being adjusted to the thresholding of k-th of CQI gear.
In still another embodiment of the process, when the third adjusting step is greater than the default adjusting step, Ke Yishe
It is true for setting the state being adjusted to the thresholding of+1 CQI gear of the kth.
S18: the state setting that is adjusted according to the CQI thresholding to+1 kth -1, kth and kth gear as a result,
Correspondingly adjust the thresholding of k-th of CQI gear.
In specific implementation, it can be adjusted according to the CQI thresholding to+1 kth -1, kth and kth gear
State setting is CQI suitable so as to obtain as a result, the targeted thresholding for accordingly adjusting k-th of CQI gear
Limit.
When the state for having more than one CQI thresholding to be adjusted is arranged to genuine, a thresholding tune can specify that
Whole sequence.It in an embodiment of the present invention, can be according to described when the state that the CQI thresholding of corresponding gear adjusts is true
CQI gear successively executes the step of being adjusted to the thresholding of the CQI from high to low sequence.For example, if k-th grade
When the state that the CQI thresholding of position and -1 gear of kth adjusts is true, the adjustment of thresholding corresponding to k-th of gear is first carried out
Step executes the step of thresholding corresponding to -1 gear of kth adjusts again later.
In an embodiment of the present invention, when state of the setting to the CQI thresholding adjustment of+1 gear of kth is true, with institute
Stating the correspondence that the thresholding of the CQI of+1 gear of kth is adjusted, steps are as follows:
It is possible, firstly, to judge the CQI thresholding according to the third adjusting step+1 gear of the kth adjusted, with
Whether it is greater than default third threshold value according to the difference of the second adjustment step-length k-th of gear CQI thresholding adjusted, this
The reason of sample is done is to guarantee that gear and thresholding keep certain corresponding relationship, i.e. gear is higher, and corresponding CQI is bigger.
Then, if the CQI thresholding of described+1 gear of the kth adjusted meets and k-th of gear CQI
The difference of limit is greater than the third threshold value, can be by the CQI thresholding of kth+1 to N number of gear according to the third adjusting step
It is adjusted, if the CQI thresholding of described+1 gear of the kth adjusted is unsatisfactory for and k-th of gear CQI thresholding
Difference be greater than the third threshold value condition when, the CQI thresholding of N number of gear can not be directly adjusted.
In an alternative embodiment of the invention, when state of the setting to the CQI thresholding adjustment of k-th of gear is true, with institute
Stating the correspondence that the thresholding of the CQI of k-th of gear is adjusted, steps are as follows:
First, it is determined that the second adjustment step-length is positive and negative, then according to the positive and negative of the second adjustment step-length, to comparison
Value does a different definition.
For example, reduced value is according to the second adjustment step-length kth adjusted if the second adjustment step-length is positive
The CQI thresholding of a gear, the difference with the CQI thresholding according to the third adjusting step+1 gear of kth adjusted；If
The second adjustment step-length is negative, and the reduced value is the CQI door according to the second adjustment step-length k-th of gear adjusted
Limit, the difference with the CQI thresholding according to the first adjustment step-length -1 gear of kth adjusted.
Then, the reduced value can be compared with pre-set default reduced value, and according to comparison result, really
The fixed specific regulation scheme that CQI thresholding is adjusted.For example default reduced value can be greater than in the reduced value, and have determined that
In the case where being adjusted to the CQI thresholding of -1 gear of the kth+1 and kth, adjusted according to the second adjustment step-length
The CQI thresholding of k-th of gear is adjusted without the CQI thresholding to other gears, and if the reduced value be greater than it is described
Default reduced value, and satisfaction has determined that under conditions of not being adjusted to the CQI thresholding of -1 gear of the kth+1 or kth, it will
The CQI thresholding of N number of gear is adjusted according to the second adjustment step-length.
For example, being less than the default reduced value in the reduced value, and have determined that -1 gear of the kth+1 and kth
CQI thresholding when being adjusted, the CQI thresholding of k-th of gear can not be adjusted, and when meeting the comparison
Value is less than the default reduced value, and has determined that when not being adjusted to the CQI thresholding of -1 gear of the kth+1 or kth, will
The CQI thresholding of gear on direction corresponding to the second adjustment step-length is adjusted, i.e., are as follows: if the second adjustment
Step-length is positive, and is just adjusted the CQI thresholding of kth to N number of gear according to the second adjustment step-length, if described second
Adjusting step is negative, and the CQI thresholding of the 1st to k gear can be adjusted according to the second adjustment step-length.
In still another embodiment of the process, when state of the setting to the CQI thresholding adjustment of -1 gear of kth is true, with
The correspondence step that the thresholding of the CQI of -1 gear of the kth is adjusted are as follows: the 1st to -1 gear of kth CQI thresholding is equal
It is adjusted according to the first adjustment step-length.
In specific implementation, in order to avoid this CQI thresholding adjustment process causes incorrect influence to adjustment next time,
It can be after the adjustment of the CQI thresholding to any gear, by the corresponding statistical information of the CQI thresholding adjusted and count information
It initializes to zero.
To more fully understand those skilled in the art and realizing the present invention, it is also provided below may be implemented it is above-mentioned
The device of CQI threshold regulating method.
As shown in Fig. 2, in general, CQI is provided with N number of gear, the corresponding thresholding of each gear, the thresholding of the CQI with
The raising of gear and increase.The apparatus may include: receiving unit 201, the first statistic unit 202, the second statistic unit
203, filtering factor setting unit 204, filter unit 205, comparing unit 206, selection unit 207, computing unit 208, state
Setting unit 209 and adjustment unit 210, in which:
The receiving unit 201 is suitable for receiving signal；
First statistic unit 202, suitable for counting total signal quality information of the signal；
Second statistic unit 203 is greater than preset first threshold value, and total letter suitable for the quantity when the signal
When number quality information is greater than default second threshold, the signal matter of the corresponding each CQI gear of the signal is counted using sliding window method
The information of amount；
The filtering factor setting unit 204, suitable for the information according to the signal quality of each CQI gear, for institute
It states each CQI gear and corresponding filtering factor is set；
The filter unit 205 is suitable for according to the corresponding filtering factor of each CQI gear, to described CQI grades each
The information of the signal quality of position is filtered, and obtains the information of the signal quality of filtered each CQI gear；
The comparing unit 206, suitable for by the information of the signal quality of filtered each CQI gear respectively with it is right
It answers the information of the preset signals quality of gear to be compared, obtains comparison result；
The selection unit 207 is suitable for choosing CQI gear corresponding to the value of maximum absolute value in the comparison result
K-th of gear, k are the sequence of gear, and N >=k >=1；
The computing unit 208, suitable for respectively according to kth -1, the comparison knot of described k-th and+1 CQI gear of kth
Fruit, is calculated the first adjustment step-length corresponding to -1 CQI gear of the kth, corresponding to k-th of CQI gear
Two adjusting steps, third adjusting step corresponding to+1 CQI gear of the kth；
The state set unit 209 is suitable for according to first, second and third adjusting step and default adjusting step
Relationship, judge whether that it is true that the state being adjusted to the CQI thresholding of+1 kth -1, kth and kth gear, which is arranged,；
The adjustment unit 210 is adjusted the CQI thresholding of+1 kth -1, kth and kth gear suitable for basis
State be arranged as a result, correspondingly adjusting the thresholding of k-th of CQI gear.
The structural schematic diagram of another CQI thresholding adjustment device in the embodiment of the present invention also provided below, specifically may be used
To refer to Fig. 3, in addition to above-mentioned receiving unit 201, the first statistic unit 202, the second statistic unit 203, filtering factor setting
Unit 204, filter unit 205, comparing unit 206, selection unit 207, computing unit 208, state set unit 209 and adjustment
Outside unit 210, described device can also include: initialization unit 211.
In specific implementation, the initialization unit 211 will be described suitable for after CQI thresholding adjustment to any gear
The corresponding statistical information of CQI thresholding adjusted and count information are initialized to zero.
In specific implementation, the state set unit 209 may include:
Subelement 2091 is arranged in first state, is suitable for when the first adjustment step-length is greater than the default adjusting step,
It is true that the state being adjusted to the thresholding of -1 CQI gear of the kth, which is arranged,；
Subelement 2092 is arranged in second state, is suitable for when the second adjustment step-length is greater than the default adjusting step,
It is true that the state being adjusted to the thresholding of k-th of CQI gear, which is arranged,；
Subelement 2093 is arranged in the third state, is suitable for when the third adjusting step is greater than the default adjusting step,
It is true that the state being adjusted to the thresholding of+1 CQI gear of the kth, which is arranged,.
In specific implementation, the adjustment unit 210, when the state suitable for the CQI thresholding adjustment in corresponding gear is true,
According to the CQI gear from high to low sequence, the step of being adjusted to the thresholding of the CQI is successively executed.
In specific implementation, the adjustment unit 210 can also include:
First judgment sub-unit 2101, when the state suitable for adjusting when CQI thresholding of the setting to+1 gear of kth is true,
Judge the CQI thresholding according to the third adjusting step+1 gear of the kth adjusted, is walked with according to the second adjustment
Whether the difference of long k-th of gear CQI thresholding adjusted is greater than default third threshold value；
The first adjustment subelement 2102, suitable for when the CQI thresholding of described+1 gear of the kth adjusted and described the
When the difference of k gear CQI thresholding is greater than the third threshold value, by the CQI thresholding of kth+1 to N number of gear according to described the
Three adjusting steps are adjusted, when the CQI thresholding and k-th of gear CQI of described+1 gear of the kth adjusted
When the difference of limit is less than the third threshold value, the CQI thresholding of N number of gear is not adjusted.
In specific implementation, the adjustment unit 210 can also include:
Second judgment sub-unit 2103, suitable for sentencing when state of the setting to the CQI thresholding adjustment of k-th of gear is true
Break the positive and negative of the second adjustment step-length；
Reduced value computation subunit 2104 is suitable for when the second adjustment step-length being timing, will be according to described
The CQI thresholding of second adjustment step-length k-th of gear adjusted, and it is adjusted according to the third adjusting step
The difference of the CQI thresholding of+1 gear of kth, is worth as a comparison, will be according to described second when the second adjustment step-length is negative
The CQI thresholding of adjusting step k-th of gear adjusted, and according to the first adjustment step-length -1 gear of kth adjusted
CQI thresholding difference, be worth as a comparison；
Second adjustment subelement 2105 is suitable for being greater than default reduced value when the reduced value, and has determined that the kth+1
And the CQI thresholding of -1 gear of kth adjusts the CQI of k-th of gear according to the second adjustment step-length when being adjusted
Thresholding and has determined that not to the CQI door of -1 gear of the kth+1 or kth when the reduced value is greater than the default reduced value
When limit is adjusted, the CQI thresholding of N number of gear is adjusted according to the second adjustment step-length.
Third adjusts subelement 2106, suitable for when meeting the reduced value less than the default reduced value, and has determined that pair
When the CQI thresholding of -1 gear of the kth+1 and kth is adjusted, the CQI thresholding of k-th of gear is not adjusted
It is whole, it is less than the default reduced value when meeting the reduced value, and have determined that not to the CQI of -1 gear of the kth+1 or kth
When thresholding is adjusted, if the second adjustment step-length is positive, the CQI thresholding of kth to N number of gear is adjusted according to described second
Synchronizing length is adjusted, if the second adjustment step-length is negative, the CQI thresholding of the 1st to k gear is adjusted according to described second
Synchronizing length is adjusted.
In specific implementation, the adjustment unit 210 can also include: the 4th adjustment subelement, be suitable for when setting is to the
When the state of the CQI thresholding adjustment of k-1 gear is true, by the 1st to -1 gear of kth CQI thresholding according to described first
Adjusting step is adjusted.
In an embodiment of the present invention, the information of the signal quality can be Block Error Rate.
In an embodiment of the present invention, the N can be 15.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of above-described embodiment is can
It is completed with instructing relevant hardware by program, which can store in computer readable storage medium, storage
Medium may include: ROM, RAM, disk or CD etc..
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (18)
1. a kind of CQI threshold regulating method, the CQI is provided with N number of gear, and each gear corresponds to a thresholding, the CQI's
Thresholding increases with the raising of gear characterized by comprising
Signal is received, and counts total signal quality information of the signal；
When the quantity of the signal is greater than preset first threshold value, and total signal quality information is greater than default second threshold
When, the information of the signal quality of the corresponding each CQI gear of the signal is counted using sliding window method；
According to the information of the signal quality of each CQI gear, corresponding filtering factor is set for each CQI gear；
According to the corresponding filtering factor of each CQI gear, the information of the signal quality of each CQI gear is filtered
Wave obtains the information of the signal quality of filtered each CQI gear；
By the information of the signal quality of the filtered each CQI gear letter with the preset signals quality of respective notch respectively
Breath is compared, and obtains comparison result, and choosing CQI gear corresponding to the value of maximum absolute value in the comparison result is kth
A gear, k are the sequence of gear, and N >=k >=1；
Respectively according to kth -1, the comparison result of k-th and+1 CQI gear of kth, the kth -1 is calculated
The first adjustment step-length corresponding to CQI gear, second adjustment step-length corresponding to k-th of CQI gear, the kth+1
Third adjusting step corresponding to CQI gear；
According to the relationship of first, second and third adjusting step and default adjusting step, judge whether setting to described the
K-1, the state that the CQI thresholding of+1 gear of kth and kth is adjusted are true；
The state being adjusted according to the CQI thresholding to+1 kth -1, kth and kth gear is arranged as a result, correspondingly adjusting
The thresholding of whole k-th of CQI gear.
2. CQI threshold regulating method according to claim 1, which is characterized in that described according to described first, second and
The relationship of three adjusting steps and default adjusting step judges whether that the CQI to+1 kth -1, kth and kth gear is arranged
The state that thresholding is adjusted is true, comprising:
When the first adjustment step-length is greater than the default adjusting step, be arranged to the thresholding of -1 CQI gear of the kth into
The state of row adjustment is true；
When the second adjustment step-length is greater than the default adjusting step, it is arranged and the thresholding of k-th of CQI gear is carried out
The state of adjustment is true；
When the third adjusting step is greater than the default adjusting step, be arranged to the thresholding of+1 CQI gear of the kth into
The state of row adjustment is true.
3. CQI threshold regulating method according to claim 2, which is characterized in that the basis to the kth -1, kth and
The setting of state that the CQI thresholding of+1 gear of kth is adjusted as a result, correspondingly adjust the thresholding of k-th of CQI gear,
Include:
When the state that the CQI thresholding of corresponding gear adjusts is true, according to the CQI gear from high to low sequence, successively hold
The step of row is adjusted the thresholding of the CQI.
4. CQI threshold regulating method according to claim 3, which is characterized in that the basis to the kth -1, kth and
The setting of state that the CQI thresholding of+1 gear of kth is adjusted as a result, correspondingly adjust the thresholding of k-th of CQI gear,
Include:
When state of the setting to the CQI thresholding adjustment of+1 gear of the kth is true, judge according to the third adjusting step
The CQI thresholding of+1 gear of the kth adjusted, and according to the second adjustment step-length k-th of gear adjusted
Whether the difference of CQI thresholding is greater than default third threshold value；
When the CQI thresholding of described+1 gear of the kth adjusted and the difference of k-th of gear CQI thresholding are greater than institute
When stating third threshold value, the CQI thresholding of kth+1 to N number of gear is adjusted according to the third adjusting step；
When the CQI thresholding of described+1 gear of the kth adjusted and the difference of k-th of gear CQI thresholding are less than institute
When stating third threshold value, the CQI thresholding of N number of gear is not adjusted.
5. CQI threshold regulating method according to claim 3, which is characterized in that the basis to the kth -1, kth and
The setting of state that the CQI thresholding of+1 gear of kth is adjusted as a result, correspondingly adjust the thresholding of k-th of CQI gear,
Include:
When state of the setting to the CQI thresholding adjustment of k-th of gear is true, the positive and negative of the second adjustment step-length is judged；
When the second adjustment step-length be timing, will be according to the CQI door of the second adjustment step-length k-th of gear adjusted
Limit, the difference with the CQI thresholding according to the third adjusting step+1 gear of kth adjusted are worth as a comparison；
It, will be according to the CQI door of the second adjustment step-length k-th of gear adjusted when the second adjustment step-length is negative
Limit, the difference with the CQI thresholding according to the first adjustment step-length -1 gear of kth adjusted are worth as a comparison；
When the reduced value is greater than default reduced value, and have determined that the CQI thresholding of -1 gear of the kth+1 and kth into
When row adjustment, the CQI thresholding of k-th of gear is adjusted according to the second adjustment step-length；
When the reduced value is greater than the default reduced value, and have determined that not to the CQI door of -1 gear of the kth+1 or kth
When limit is adjusted, the CQI thresholding of N number of gear is adjusted according to the second adjustment step-length；
It is less than the default reduced value when meeting the reduced value, and has determined that the CQI to -1 gear of the kth+1 and kth
When thresholding is adjusted, the CQI thresholding of k-th of gear is not adjusted；
It is less than the default reduced value when meeting the reduced value, and has determined that not to -1 gear of the kth+1 or kth
When CQI thresholding is adjusted, if the second adjustment step-length is positive, by the CQI thresholding of kth to N number of gear according to described
Two adjusting steps are adjusted, if the second adjustment step-length is negative, by the CQI thresholding of the 1st to k gear according to described
Two adjusting steps are adjusted.
6. CQI threshold regulating method according to claim 3, which is characterized in that the basis to the kth -1, kth and
The CQI thresholding of+1 gear of kth be made whether the setting of adjustment as a result, correspondingly adjust the thresholding of k-th of CQI gear,
Include:
When state of the setting to the CQI thresholding adjustment of -1 gear of kth is true, by the 1st to -1 gear of kth CQI thresholding
It is adjusted according to the first adjustment step-length.
7. CQI threshold regulating method according to claim 1, which is characterized in that further include: as the CQI to any gear
After thresholding adjustment, the corresponding statistical information of the CQI thresholding adjusted and count information are initialized to zero.
8. CQI threshold regulating method according to claim 1, which is characterized in that the information of the signal quality is to miss block
Rate.
9. CQI threshold regulating method according to claim 1, which is characterized in that the N is 15.
10. a kind of CQI thresholding adjusts device, the CQI is provided with N number of gear, the corresponding thresholding of each gear, the CQI
Thresholding increase with the raising of gear characterized by comprising
Receiving unit is suitable for receiving signal；
First statistic unit, suitable for counting total signal quality information of the signal；
Second statistic unit is greater than preset first threshold value, and total signal quality information suitable for the quantity when the signal
When greater than default second threshold, the information of the signal quality of the corresponding each CQI gear of the signal is counted using sliding window method；
Filtering factor setting unit is described CQI grades each suitable for the information according to the signal quality of each CQI gear
Corresponding filtering factor is arranged in position；
Filter unit is suitable for according to the corresponding filtering factor of each CQI gear, to the signal matter of each CQI gear
The information of amount is filtered, and obtains the information of the signal quality of filtered each CQI gear；
Comparing unit, suitable for the information of the signal quality of filtered each CQI gear is pre- with respective notch respectively
If the information of signal quality is compared, comparison result is obtained；
Selection unit is k-th of gear, k suitable for choosing CQI gear corresponding to the value of maximum absolute value in the comparison result
For the sequence of gear, and N >=k >=1；
Computing unit, suitable for according to kth -1, the comparison result of k-th and+1 CQI gear of kth, being calculated respectively
The first adjustment step-length corresponding to -1 CQI gear of the kth, second adjustment step-length corresponding to k-th of CQI gear,
Third adjusting step corresponding to+1 CQI gear of the kth；
State set unit, suitable for the relationship according to first, second and third adjusting step and default adjusting step, judgement
It is true that the state being adjusted to the CQI thresholding of+1 kth -1, kth and kth gear, which is whether arranged,；
Adjustment unit, suitable for being arranged according to the state being adjusted to the CQI thresholding of+1 kth -1, kth and kth gear
As a result, correspondingly adjusting the thresholding of k-th of CQI gear.
11. CQI thresholding according to claim 10 adjusts device, which is characterized in that the state set unit, comprising:
Subelement is arranged in first state, is suitable for being arranged when the first adjustment step-length is greater than the default adjusting step to institute
It is true for stating the state that the thresholding of -1 CQI gear of kth is adjusted；
Subelement is arranged in second state, is suitable for being arranged when the second adjustment step-length is greater than the default adjusting step to institute
It is true for stating the state that the thresholding of k-th of CQI gear is adjusted；
Subelement is arranged in the third state, is suitable for being arranged when the third adjusting step is greater than the default adjusting step to institute
It is true for stating the state that the thresholding of+1 CQI gear of kth is adjusted.
12. CQI thresholding according to claim 11 adjusts device, which is characterized in that the adjustment unit is suitable for corresponding
When the state of the CQI thresholding adjustment of gear is true, according to the CQI gear from high to low sequence, successively execute to the CQI
Thresholding the step of being adjusted.
13. CQI thresholding according to claim 12 adjusts device, which is characterized in that the adjustment unit, comprising:
First judgment sub-unit, suitable for judging when state of the setting to the CQI thresholding adjustment of+1 gear of the kth is true
According to the CQI thresholding of the third adjusting step+1 gear of the kth adjusted, and according to the second adjustment step-length tune
Whether the difference of k-th of gear CQI thresholding after whole is greater than default third threshold value；
The first adjustment subelement, suitable for the CQI thresholding and k-th of gear when described+1 gear of the kth adjusted
When the difference of CQI thresholding is greater than the third threshold value, the CQI thresholding of kth+1 to N number of gear is adjusted according to the third and is walked
Length is adjusted；And suitable for the CQI thresholding and k-th of gear CQI when described+1 gear of the kth adjusted
When the difference of limit is less than the third threshold value, the CQI thresholding of N number of gear is not adjusted.
14. CQI thresholding according to claim 12 adjusts device, which is characterized in that the adjustment unit, comprising:
Second judgment sub-unit, suitable for when state of the setting to the CQI thresholding adjustment of k-th gear is true, judging described the
Two adjusting steps it is positive and negative；
Reduced value computation subunit is suitable for when the second adjustment step-length being timing, will adjust according to the second adjustment step-length
The CQI thresholding of k-th of gear afterwards, the difference with the CQI thresholding according to the third adjusting step+1 gear of kth adjusted
Value, is worth as a comparison, will be k-th grade adjusted according to the second adjustment step-length when the second adjustment step-length is negative
The CQI thresholding of position, the difference with the CQI thresholding according to the first adjustment step-length -1 gear of kth adjusted, as a comparison
Value；
Second adjustment subelement is suitable for being greater than default reduced value when the reduced value, and has determined that the kth+1 and kth -1
When the CQI thresholding of a gear is adjusted, the CQI thresholding of k-th of gear is adjusted according to the second adjustment step-length, when
The reduced value is greater than the default reduced value, and has determined that and do not carry out to the CQI thresholding of -1 gear of the kth+1 or kth
When adjustment, the CQI thresholding of N number of gear is adjusted according to the second adjustment step-length；
Third adjusts subelement, meets the reduced value less than the default reduced value suitable for working as, and have determined that the kth+1
And the CQI thresholding of -1 gear of kth is not adjusted the CQI thresholding of k-th of gear, works as satisfaction when being adjusted
The reduced value is less than the default reduced value, and has determined that and do not carry out to the CQI thresholding of -1 gear of the kth+1 or kth
When adjustment, if the second adjustment step-length is positive, by the CQI thresholding of kth to N number of gear according to the second adjustment step-length into
Row adjustment, if the second adjustment step-length is negative, by the CQI thresholding of the 1st to k gear according to the second adjustment step-length into
Row adjustment.
15. CQI thresholding according to claim 12 adjusts device, which is characterized in that the adjustment unit, comprising:
4th adjustment subelement, suitable for when state of the setting to the adjustment of the CQI thresholding of -1 gear of kth is true, by the 1st to the
The CQI thresholding of k-1 gear is adjusted according to the first adjustment step-length.
16. CQI thresholding according to claim 10 adjusts device, which is characterized in that further include:
Initialization unit, suitable for after CQI thresholding adjustment to any gear, by the corresponding system of the CQI thresholding adjusted
Meter information and count information are initialized to zero.
17. CQI thresholding according to claim 10 adjusts device, which is characterized in that the information of the signal quality is to miss
Block rate.
18. CQI thresholding according to claim 10 adjusts device, which is characterized in that the N is 15.
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| CN201510997818.XA CN106921465B (en) | 2015-12-25 | 2015-12-25 | CQI threshold regulating method and device |
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| CN201510997818.XA CN106921465B (en) | 2015-12-25 | 2015-12-25 | CQI threshold regulating method and device |
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| CN103873217A (en) * | 2012-12-17 | 2014-06-18 | 展讯通信（上海）有限公司 | Method and device for correcting CQI (channel quality indicator), and user equipment |
| CN104618951A (en) * | 2014-12-29 | 2015-05-13 | 深圳市中兴微电子技术有限公司 | Channel quality indication information adjusting method and device and mobile terminal |
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| WO2009104146A1 (en) * | 2008-02-19 | 2009-08-27 | Nxp B.V. | Uplink feedback in a multimedia broadcast/multicast services (mbms) wireless communications system |
| CN102255717A (en) * | 2010-05-21 | 2011-11-23 | 电信科学技术研究院 | Channel quality indicator CQI information correction method and apparatus thereof |
| CN103873217A (en) * | 2012-12-17 | 2014-06-18 | 展讯通信（上海）有限公司 | Method and device for correcting CQI (channel quality indicator), and user equipment |
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