CN105376010B - Frequency selects the acquisition methods and device of Signal to Interference plus Noise Ratio parameter - Google Patents
Frequency selects the acquisition methods and device of Signal to Interference plus Noise Ratio parameter Download PDFInfo
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- CN105376010B CN105376010B CN201410436869.0A CN201410436869A CN105376010B CN 105376010 B CN105376010 B CN 105376010B CN 201410436869 A CN201410436869 A CN 201410436869A CN 105376010 B CN105376010 B CN 105376010B
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Abstract
The embodiment of the present invention provides the acquisition methods and device that a kind of frequency selects Signal to Interference plus Noise Ratio parameter.This method comprises: the Whole frequency band Signal to Interference plus Noise Ratio SINR parameter according to acquisition determines Whole frequency band SINR；Wherein, the Whole frequency band SINR parameter includes downlink Whole frequency band channel quality indicator (CQI), and the Whole frequency band SINR includes downlink Whole frequency band SINR；The SINR compensation rate of the uplink subband is obtained according to the characteristic value of the uplink subband in the characteristic value of uplink Whole frequency band and the uplink Whole frequency band；The Whole frequency band SINR is compensated according to the SINR compensation rate of the uplink subband, frequency is obtained and selects SINR；Wherein, it includes downlink subband SINR that the frequency, which selects SINR,；SINR is selected to determine that frequency selects SINR parameter according to the frequency；Wherein, it includes that downlink frequency selects CQI that the frequency, which selects SINR parameter,.Method provided in an embodiment of the present invention saves base station and obtains the resource overhead that frequency selects CQI, also improves the accuracy of base station resource scheduling.
Description
Technical field
The present embodiments relate to acquisition methods and dress that the communication technology more particularly to a kind of frequency select Signal to Interference plus Noise Ratio parameter
It sets.
Background technique
Channel quality instruction (Channel Quality Indication, hereinafter referred to as CQI) is the communication of wireless channel
The measurement standard of quality.In general, the CQI of a high level indicates that a channel has high quality, vice versa.UE is by by downlink
The CQI of frequency band is reported to base station, and base station is reported according to user equipment (User Equipment, hereinafter referred to as UE)
The CQI of downstream bands knows the communication quality of down channel, to distribute suitable resource for UE.
In the prior art, the bandwidth of entire communication system is Whole frequency band, and a Whole frequency band can be according to different granularities
It is divided into several subbands.In general, base station not only needs to obtain UE for whole system to distribute suitable resource for UE
The downlink Whole frequency band CQI of bandwidth measurement, it is also desirable to obtain UE for subband CQI (the i.e. frequency choosing of part system bandwidth measurement
CQI), base station obtains the carry out scheduling of resource that subband CQI can make base station more accurate.
But in the prior art base station obtain CQI when resource overhead it is larger.
Summary of the invention
The embodiment of the present invention provides the acquisition methods and device that a kind of frequency selects Signal to Interference plus Noise Ratio parameter, to solve the prior art
The larger technical problem of resource overhead when middle base station obtains CQI.
In a first aspect, the embodiment of the present invention provides the acquisition device that a kind of frequency selects Signal to Interference plus Noise Ratio parameter, comprising:
First determining module, for determining Whole frequency band SINR according to the Whole frequency band Signal to Interference plus Noise Ratio SINR parameter of acquisition；Wherein,
The Whole frequency band SINR parameter includes downlink Whole frequency band channel quality indicator (CQI), and the Whole frequency band SINR includes downlink Whole frequency band
SINR；
First obtains module, for the uplink subband in the characteristic value and the uplink Whole frequency band according to uplink Whole frequency band
The SINR compensation rate of characteristic value acquisition uplink subband；
Second obtains module, for being mended according to the SINR compensation rate of the uplink subband to the Whole frequency band SINR
It repays, obtains frequency and select SINR；Wherein, it includes the SINR of downlink subband that the frequency, which selects SINR, the SINR compensation rate of the uplink subband
For the difference of the Whole frequency band SINR and the SINR of the uplink subband；
Second determining module, for selecting SINR to determine that frequency selects SINR parameter according to the frequency；Wherein, the frequency selects SINR to join
Number includes that downlink frequency selects CQI.
With reference to first aspect, in the first possible embodiment of first aspect, the Whole frequency band SINR parameter is also
Including uplink Whole frequency band modulating-coding strategy MCS, then it further includes the SINR of uplink subband that the frequency, which selects SINR, and the frequency selects SINR
Parameter further includes that upper line frequency selects MCS.
With reference to first aspect or the first possible embodiment of first aspect, second in first aspect are possible
In embodiment, described first obtains module, is specifically used for obtaining the uplink according to formula [EigVec, λ]=Eig (Ruu)
The characteristic value of Whole frequency band；Wherein, the Ruu is the covariance matrix of uplink Whole frequency band, and the Eig is characterized value operation splitting, institute
Stating EigVec is feature vector, and the λ is the characteristic value of the uplink Whole frequency band；And according to formula [EigVec, λx]=Eig
(Ruu) characteristic value of the uplink subband is obtained；Wherein, the λxFor the characteristic value of the uplink subband；And according to formulaObtain the SINR compensation rate of the uplink subband；Wherein, the P is that the SINR of the uplink subband is mended
The amount of repaying.
With reference to first aspect or the first possible embodiment of first aspect, the third in first aspect are possible
In embodiment, described first obtains module, is specifically used for according to formula [EigVec, λx]=Eig (Ruu) obtains the uplink
The characteristic value of subband；Wherein, the Ruu is the covariance matrix of the uplink Whole frequency band, and the Eig is characterized value operation splitting,
The EigVec is feature vector, the λxFor the characteristic value of the uplink subband；And according to formula λ=Avg (λ0,λ1,…λx)
Obtain the characteristic value of the uplink Whole frequency band, wherein the λ is the characteristic value of the uplink Whole frequency band；And according to formulaObtain the SINR compensation rate of the uplink subband；Wherein, the P is that the SINR of the uplink subband is mended
The amount of repaying.
With reference to first aspect or the first possible embodiment of first aspect, the 4th kind in first aspect are possible
In embodiment, described first obtains module, is specifically used for according to formula [EigVec, λx]=Eig (Ruu) obtains the uplink
The characteristic value of subband；Wherein, the Ruu is the covariance matrix of the uplink Whole frequency band, and the Eig is characterized value operation splitting,
The EigVec is feature vector, the λxFor the characteristic value of the uplink subband；And according to formulaObtain the characteristic value of the uplink Whole frequency band, wherein the λ is the uplink full range
The characteristic value of band, the σ are noise variance；And according to formulaThe SINR for obtaining the uplink subband is mended
The amount of repaying；Wherein, the P is the SINR compensation rate of the uplink subband.
With reference to first aspect any one of to the 4th kind of possible embodiment of first aspect, the of first aspect
In five kinds of possible embodiments, described second obtains module, is specifically used for according to SINRx=SINR+P obtains the frequency choosing
SINR；Wherein, the SINRxSelecting SINR, the SINR for the frequency is the Whole frequency band SINR.
The 5th kind of possible embodiment with reference to first aspect, in the 6th kind of possible embodiment of first aspect
In, described first obtains module, is specifically used for basisThe characteristic value of the uplink Whole frequency band is carried out at noise reduction
Reason obtainsWherein, describedFor the characteristic value of the uplink Whole frequency band after noise reduction process, the σ is noise variance；And according toNoise reduction process is carried out to the characteristic value of the uplink subband, is obtainedWherein, describedAfter noise reduction process
Uplink subband characteristic value；And according to formulaObtain the SINR compensation rate of the uplink subband.
Second aspect, the embodiment of the present invention provide the acquisition methods that a kind of frequency selects Signal to Interference plus Noise Ratio parameter, comprising:
Whole frequency band SINR is determined according to the Whole frequency band Signal to Interference plus Noise Ratio SINR parameter of acquisition；Wherein, the Whole frequency band SINR ginseng
Number includes downlink Whole frequency band channel quality indicator (CQI), and the Whole frequency band SINR includes downlink Whole frequency band SINR；
It is obtained on described according to the characteristic value of the uplink subband in the characteristic value of uplink Whole frequency band and the uplink Whole frequency band
The SINR compensation rate of row subband；
The Whole frequency band SINR is compensated according to the SINR compensation rate of the uplink subband, frequency is obtained and selects SINR；Its
In, it includes downlink subband SINR that the frequency, which selects SINR, and the SINR compensation rate of the uplink subband is the Whole frequency band SINR and institute
State the difference of the SINR of uplink subband；
SINR is selected to determine that frequency selects SINR parameter according to the frequency；Wherein, it includes downlink frequency choosing that the frequency, which selects SINR parameter,
CQI。
In conjunction with second aspect, in the first possible embodiment of second aspect, the Whole frequency band SINR parameter is also
Including uplink Whole frequency band modulating-coding strategy MCS；It further includes the SINR of uplink subband that then the frequency, which selects SINR,；The then frequency choosing
SINR parameter further includes that upper line frequency selects MCS.
In conjunction with the possible embodiment of the first of second aspect or second aspect, second in second aspect is possible
In embodiment, the characteristic value of the uplink subband in the characteristic value and the uplink Whole frequency band according to uplink Whole frequency band is obtained
The SINR compensation rate of the uplink subband, comprising:
The characteristic value of the uplink Whole frequency band is obtained according to formula [EigVec, λ]=Eig (Ruu)；Wherein, the Ruu is
The covariance matrix of uplink Whole frequency band, the Eig are characterized value operation splitting, and the EigVec is feature vector, and the λ is described
The characteristic value of uplink Whole frequency band；
According to formula [EigVec, λx]=Eig (Ruu) obtains the characteristic value of the uplink subband；Wherein, the Ruu is
The covariance matrix of the uplink Whole frequency band, the Eig are characterized value operation splitting, and the EigVec is feature vector, the λx
For the characteristic value of the uplink subband；
According to formulaObtain the SINR compensation rate of the uplink subband；Wherein, the P is described
The SINR compensation rate of uplink subband.
In conjunction with the possible embodiment of the first of second aspect or second aspect, the third in second aspect is possible
In embodiment, the characteristic value of the uplink subband in the characteristic value and the uplink Whole frequency band according to uplink Whole frequency band is obtained
The SINR compensation rate of the uplink subband, comprising:
According to formula [EigVec, λx]=Eig (Ruu) obtains the characteristic value of the uplink subband；Wherein, the Ruu is
The covariance matrix of the uplink Whole frequency band, the Eig are characterized value operation splitting, and the EigVec is feature vector, the λx
For the characteristic value of the uplink subband；
According to formula λ=Avg (λ0,λ1,…λx) obtaining the characteristic value of the uplink Whole frequency band, wherein the λ is described
The characteristic value of uplink Whole frequency band；
According to formulaObtain the SINR compensation rate of the uplink subband；Wherein, the P is described
The SINR compensation rate of uplink subband.
In conjunction with the possible embodiment of the first of second aspect or second aspect, the 4th kind in second aspect is possible
In embodiment, the characteristic value of the uplink subband in the characteristic value and the uplink Whole frequency band according to uplink Whole frequency band is obtained
The SINR compensation rate of the uplink subband, comprising:
According to formula [EigVec, λx]=Eig (Ruu) obtains the characteristic value of the uplink subband；Wherein, the Ruu is
The covariance matrix of the uplink Whole frequency band, the Eig are characterized value operation splitting, and the EigVec is feature vector, the λx
For the characteristic value of the uplink subband；
According to formulaObtain the characteristic value of the uplink Whole frequency band, wherein described
λ is the characteristic value of the uplink Whole frequency band, and the σ is noise variance；
According to formulaObtain the SINR compensation rate of the uplink subband；Wherein, the P is described
The SINR compensation rate of uplink subband.
In conjunction with any one of the 4th kind of possible embodiment of second aspect to second aspect, the of second aspect
In five kinds of possible embodiments, the Whole frequency band SINR is compensated according to the SINR compensation rate of the uplink subband, is obtained
It obtains and selects SINR frequently, comprising:
According to SINRx=SINR+P obtains the frequency and selects SINR；Wherein, the SINRxSINR is selected for the frequency, it is described
SINR is the Whole frequency band SINR.
In conjunction with the 5th kind of possible embodiment of second aspect, in the 6th kind of possible embodiment of second aspect
In, according to formulaObtain the SINR compensation rate of the uplink subband；It specifically includes:
According toNoise reduction process is carried out to the characteristic value of the uplink Whole frequency band, is obtainedWherein, describedFor
The characteristic value of uplink Whole frequency band after noise reduction process, the σ are noise variance；
According toNoise reduction process is carried out to the characteristic value of the uplink subband, is obtainedWherein, described
For the characteristic value of the uplink subband after noise reduction process, the σ is noise variance；
According to formulaObtain the SINR compensation rate of the uplink subband.
Frequency provided in an embodiment of the present invention selects the acquisition methods and device of Signal to Interference plus Noise Ratio parameter, passes through the first determining module root
Whole frequency band SINR is determined according to the Whole frequency band SINR parameter of acquisition, and first obtains module according to the characteristic value and uplink of uplink Whole frequency band
The characteristic value of uplink subband in Whole frequency band obtains the SINR compensation rate of uplink subband, and second, which obtains module, obtains mould using first
The SINR compensation rate for the uplink subband that block obtains compensates above-mentioned Whole frequency band SINR, obtains frequency and selects SINR, the second last is true
Cover half block selects SINR to determine that frequency selects SINR parameter frequently using this.Device provided in an embodiment of the present invention, base station are obtaining frequency choosing
No longer UE is needed to report when SINR parameter (i.e. the SINR parameter of subband), so that the resource overhead of system be greatly saved.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the distribution character figure that frequency provided by the invention selects SINR；
Fig. 2 is the structural representation for the acquisition device embodiment one that frequency provided in an embodiment of the present invention selects Signal to Interference plus Noise Ratio parameter
Figure；
Fig. 3 is the process signal for the acquisition methods embodiment one that frequency provided in an embodiment of the present invention selects Signal to Interference plus Noise Ratio parameter
Figure；
Fig. 4 is the process signal for the acquisition methods embodiment two that frequency provided in an embodiment of the present invention selects Signal to Interference plus Noise Ratio parameter
Figure；
Fig. 5 is the process signal for the acquisition methods embodiment three that frequency provided in an embodiment of the present invention selects Signal to Interference plus Noise Ratio parameter
Figure；
Fig. 6 is the process signal for the acquisition methods example IV that frequency provided in an embodiment of the present invention selects Signal to Interference plus Noise Ratio parameter
Figure；
Fig. 7 is the process signal for the acquisition methods embodiment five that frequency provided in an embodiment of the present invention selects Signal to Interference plus Noise Ratio parameter
Figure.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Base station involved in the application can be and refer to the accession in net in the sky on interface by one or more sectors and nothing
The equipment of line terminal communication.The air frame that base station can be used for receive and IP grouping are mutually converted, as wireless terminal and
The router between the rest part of net is accessed, wherein the rest part for accessing net may include Internet protocol (IP) network.Base station
Also attribute management of the tunable to air interface.For example, base station can be base station (BTS, Base in GSM or CDMA
Transceiver Station), it is also possible to the base station (NodeB) in WCDMA, can also be the evolved base station in LTE
(NodeB or eNB or e-NodeB, evolutional Node B), the application does not limit.
The present embodiments relate to method be suitable for time division duplex (Time Division Duplexing, hereinafter referred to as
TDD) system, i.e. down channel in up channel and downstream bands in upstream band belong to shared channel, the shared channel
It is, respectively, used as uplink or downlink at different times.Due to the uplink and downlink channel reciprocity in TDD system, selected in frequency
Property decline (i.e. frequency selective fading) on feature be also consistent.Shown in Figure 1, frequency shown in FIG. 1 selects the distribution trend of SINR, real
The namely decline trend of channel over different frequencies on border.Either for up channel or down channel, entirely
It is fixed that frequency band SINR and frequency, which select the difference between SINR, that is to say, that on some frequency point or some subband, no matter
This frequency point or subband are used for uplink or downlink, this frequency point or the corresponding SINR of subband (selecting SINR frequently) and this
Difference between frequency point or the corresponding SINR mean value (i.e. Whole frequency band SINR) of subband be it is constant, what is uniquely changed is this frequency point
Or (i.e. the value of the ordinate of Fig. 1 can change corresponding signal power subband, but the change of two lines when being used for uplink or downlink
Change trend is constant).It should be noted that frequency involved in the embodiment of the present invention selects SINR to refer on a certain subband
SINR。
Fig. 2 is the structural representation for the acquisition device embodiment one that frequency provided in an embodiment of the present invention selects Signal to Interference plus Noise Ratio parameter
Figure.The device can be base station, also can integrate in a base station.As shown in Fig. 2, the device includes: the first determining module 10,
One, which obtains module 11, second, obtains module 12 and the second determining module 13.Wherein, the first determining module 10, for according to acquisition
Whole frequency band Signal to Interference plus Noise Ratio (Signal to Interference plus Noise Ratio, hereinafter referred to as SINR) parameter it is true
Determine Whole frequency band SINR；Wherein, the Whole frequency band SINR parameter includes downlink Whole frequency band channel quality indicator (CQI), the Whole frequency band
SINR includes downlink Whole frequency band SINR；First obtains module 11, for complete according to the characteristic value of uplink Whole frequency band and the uplink
The characteristic value of uplink subband in frequency band obtains the SINR compensation rate of uplink subband；Second obtains module 12, for according to
The SINR compensation rate of uplink subband compensates the Whole frequency band SINR, obtains frequency and selects SINR；Wherein, the frequency selects SINR packet
Include the SINR of downlink subband；The SINR compensation rate of the uplink subband is the SINR of the Whole frequency band SINR and the uplink subband
Difference；Second determining module 13, for selecting SINR to determine that frequency selects SINR parameter according to the frequency；Wherein, the frequency selects SINR
Parameter includes that downlink frequency selects CQI.
Specifically, in order to enable base station knows that the quality with the transmission channel before UE, UE can send complete to base station
Frequency band SINR parameter.Whole frequency band SINR parameter may include downlink Whole frequency band CQI.Optionally, UE can be by covariance
Battle array carries out feature decomposition, obtains the characteristic value of downlink Whole frequency band, downlink is calculated further according to the characteristic value of the downlink Whole frequency band
Then downlink Whole frequency band CQI is reported to base station by Whole frequency band CQI.After base station obtains above-mentioned Whole frequency band SINR parameter, Ke Yitong
It crosses the first determining module 10 Whole frequency band SINR parameter progress inverse quantization is converted to obtain Whole frequency band SINR.Optionally, when complete
When frequency band SINR parameter is downlink Whole frequency band CQI, then Whole frequency band SINR is just downlink Whole frequency band SINR.
First obtains module 11 can be according to upper in the characteristic value and uplink Whole frequency band of the uplink Whole frequency band that base station obtains
The characteristic value of row subband obtains the SINR compensation rate of uplink subband, and the SINR compensation rate of the uplink subband is above-mentioned Whole frequency band
The difference of the SINR of SINR and uplink subband.Referring to Fig. 1, it is assumed that the center frequency point of this uplink subband is 200MHz, then should
It is exactly the SINR of the uplink subband, the corresponding SINR mean value of the 200MHz i.e. Whole frequency band that the corresponding frequency of 200MHz, which selects SINR,
SINR, and the SINR compensation rate of uplink subband is exactly the difference of both.It should be noted that the characteristic value of above-mentioned uplink subband
It is also base station by carrying out feature decomposition acquisition to covariance matrix, only in the characteristic value and acquisition uplink for obtaining uplink subband
It is different to the feature decomposition granularity of above-mentioned covariance matrix when the characteristic value of Whole frequency band.
Due to the reciprocity of uplink and downlink channel, the difference of the SINR of uplink subband is equal to the difference of the SINR of downlink subband,
Therefore, the second acquisition module 12 obtains the SINR compensation rate of uplink subband to above-mentioned Whole frequency band using above-mentioned first acquisition module 11
SINR is compensated, and compensation here is actually to carry out frequency to Whole frequency band SINR to take as an elective course just, selects SINR to obtain frequency.Second really
The frequency that cover half block 13 obtains above-mentioned second acquisition module 12 selects SINR to quantify, and determines that frequency selects SINR parameter, which selects
SINR parameter may include that downlink frequency selects CQI.Optionally, when above-mentioned Whole frequency band SINR parameter is downlink Whole frequency band CQI, frequency is selected
SINR is just the SINR of downlink subband, then it is exactly the corresponding downlink subband of above-mentioned uplink subband that frequency here, which selects SINR parameter i.e.,
Downlink frequency selects CQI.
In the prior art, when acquisition downlink frequency in base station selects CQI (CQI of i.e. a certain downlink subband), UE is needed to report, and UE
It reports and needs certain resource overhead；When granularity of division of the communication system to downlink Whole frequency band is thinner, the downlink divided is sub
The number of band is more, therefore, when UE is to be reported to base station for the CQI of whole or several downlink subbands, then needs more
Resource overhead.But in the present invention, it is only necessary to which UE reports the CQI of downlink Whole frequency band, and base station is only needed according to downlink full range
The CQI of band calculates the SINR of downlink Whole frequency band, and by the SINR compensation rate of uplink subband to the SINR of the downlink Whole frequency band
It compensates, after the SINR for obtaining downlink subband, the downlink frequency that the downlink subband can be obtained selects CQI, no longer needs to pass through UE
It reports, the resource overhead of system is greatly saved.
Frequency provided in an embodiment of the present invention selects the acquisition device of Signal to Interference plus Noise Ratio parameter, by the first determining module according to acquisition
Whole frequency band SINR parameter determine Whole frequency band SINR, first obtains module according to the characteristic value and uplink Whole frequency band of uplink Whole frequency band
In uplink subband characteristic value obtain uplink subband SINR compensation rate, second obtain module using first obtain module obtain
The SINR compensation rate of uplink subband above-mentioned Whole frequency band SINR is compensated, obtain frequency and select SINR, the second last determining module
SINR is selected to determine that frequency selects SINR parameter frequently using this.SINR parameter is selected in acquisition frequency in device provided in an embodiment of the present invention, base station
No longer UE is needed to report when (i.e. the SINR parameter of subband), so that the resource overhead of system be greatly saved.
On the basis of above-mentioned embodiment illustrated in fig. 2, further, above-mentioned Whole frequency band SINR parameter further includes uplink full range
Band modulating-coding strategy (Modulation and Coding Scheme, hereinafter referred to as MCS), then the frequency selects the SINR to further include
The SINR of uplink subband, it further includes that upper line frequency selects MCS that the frequency, which selects SINR parameter,.
Specifically, above-mentioned Whole frequency band SINR parameter is other than including downlink Whole frequency band CQI, it can also include uplink full range
Band MCS.It, can be by carrying out feature to covariance matrix when base station obtains the uplink Whole frequency band MCS in Whole frequency band SINR parameter
It decomposes, obtains the characteristic value of uplink Whole frequency band, uplink Whole frequency band MCS is calculated further according to the characteristic value of the uplink Whole frequency band.
When in above-mentioned Whole frequency band SINR parameter including downlink Whole frequency band CQI and uplink Whole frequency band MCS, Whole frequency band here
SINR may include downlink Whole frequency band SINR and uplink Whole frequency band SINR, then above-mentioned frequency selects SINR in the SINR including downlink subband
On the basis of, it further include the SINR of uplink subband, above-mentioned frequency selects SINR parameter on the basis of including that downlink frequency selects CQI, also wraps
It includes line frequency and selects MCS.
Optionally, when above-mentioned Whole frequency band SINR parameter is downlink Whole frequency band CQI and uplink Whole frequency band MCS, first is determined
Module 10 can determine downlink Whole frequency band SINR according to above-mentioned downlink Whole frequency band CQI, can be true according to above-mentioned uplink Whole frequency band MCS
Determine uplink Whole frequency band SINR.Therefore, after the first acquisition module 11 gets the compensation rate of uplink subband SINR, second is obtained
The compensation rate that module 12 can use uplink subband SINR compensates above-mentioned downlink Whole frequency band SINR, obtains downlink subband
SINR, and above-mentioned uplink Whole frequency band SINR is compensated using the compensation rate of uplink subband SINR, obtains uplink subband
SINR, i.e., above-mentioned frequency select the SINR of the SINR that SINR is downlink subband and uplink subband.Finally, the second determining module 13 is under
The SINR of row subband determines that downlink frequency selects CQI, selects MCS according to line frequency in the SINR determination of uplink subband, i.e., above-mentioned frequency selects SINR
Parameter is exactly that downlink frequency selects CQI and upper line frequency to select MCS.
It in the prior art, is by currently connecing when base station obtains upper line frequency and selects MCS (MCS of i.e. a certain uplink subband)
The UE of receipts is demodulated by the data that a certain uplink subband is sent, and obtains the SINR of the uplink subband, then passes through the uplink
The SINR of subband obtains the MCS of the uplink subband, and base station can remove scheduling UE by the MCS of the uplink subband, i.e. base station can basis
The MCS of the uplink subband is that UE sends data distribution resource next time.Since UE is sent used in data next time, uplink subband can
Can be different from the uplink subband, channel quality condition is also just different, therefore goes to be next using the MCS of uplink subband this time
Secondary UE sends data and distributes resource, can there is the technical problem of scheduling of resource inaccuracy.But in the present invention, base station can benefit
The SINR that corresponding each uplink subband is calculated with the SINR compensation rate of each uplink subband, then to each uplink subband
SINR carries out the MCS that quantization obtains each uplink subband, so that base station can be according to UE when distributing ascending resource for UE
The MCS of the uplink subband of actual use is that UE distributes ascending resource, and scheduling of resource is more accurate.
Frequency provided in an embodiment of the present invention selects the acquisition device of Signal to Interference plus Noise Ratio parameter, by the first determining module according to acquisition
Whole frequency band SINR parameter determine Whole frequency band SINR, first obtains module according to the characteristic value and uplink Whole frequency band of uplink Whole frequency band
In uplink subband characteristic value obtain uplink subband SINR compensation rate, second obtain module using first obtain module obtain
The SINR compensation rate of uplink subband above-mentioned Whole frequency band SINR is compensated, obtain frequency and select SINR, the second last determining module
SINR is selected to determine that frequency selects SINR parameter frequently using this.SINR parameter is selected in acquisition frequency in device provided in an embodiment of the present invention, base station
No longer UE is needed to report when (i.e. the SINR parameter of subband), so that the resource overhead of system be greatly saved, and passes through utilization
The SINR compensation rate compensation Whole frequency band SINR of uplink subband obtains frequency and selects SINR, improves the accuracy of scheduling of resource.
On the basis of the above embodiments, as a kind of possible embodiment of the embodiment of the present invention, the present embodiment is related to
And be the first acquisition module 11 obtain uplink subband SINR compensation rate detailed process.Above-mentioned first obtains module 11, tool
Body is used to obtain the characteristic value of the uplink Whole frequency band according to formula [EigVec, λ]=Eig (Ruu) (formula 1)；Wherein, described
Ruu is the covariance matrix of uplink Whole frequency band, and the Eig is characterized value operation splitting, and the EigVec is feature vector, the λ
For the characteristic value of the uplink Whole frequency band；And according to formula [EigVec, λx]=Eig (Ruu) (formula 2) obtains uplink
The characteristic value of band；Wherein, the λxFor the characteristic value of the uplink subband；And according to formula(formula 3)
Obtain the SINR compensation rate of the uplink subband；Wherein, the P is the SINR compensation rate of the uplink subband.
It is obtained specifically, the first acquisition module 11 carries out feature decomposition according to covariance matrix Ruu of the formula 1 to uplink Whole frequency band
To the eigenvalue λ of uplink Whole frequency band.Optionally, the association of the uplink Whole frequency band can be obtained according to SRS sub-band channel response matrix
Variance matrix.Here it assume that the granularity for carrying out feature decomposition to Ruu is the first granularity, then feature carried out to Ruu according to formula 2
The granularity of decomposition is the second granularity, and the second granularity is more refined than the first granularity.That is, being carried out not to above-mentioned Ruu
The decomposition of one-size, so that it may obtain the eigenvalue λ of uplink Whole frequency band and the eigenvalue λ of uplink subbandx.Here λxIt can refer to
Be multiple uplink subbands characteristic value, such as: the eigenvalue λ of uplink subband 00, uplink subband 1 eigenvalue λ1, uplink subband
The eigenvalue λ of xxDeng.P in above-mentioned formula 3 can be the SINR compensation rate of multiple uplink subbands, such as: uplink subband 0
The SINR compensation rate uplink subband x's of SINR compensation rate uplink subband 1
SINR compensation rateDeng.
On the basis of the above embodiments, as second of possible embodiment of the embodiment of the present invention, the present embodiment
What is involved is first to obtain another detailed process that module 11 obtains the SINR compensation rate of uplink subband.Above-mentioned first obtains module
11, it is specifically used for according to formula [EigVec, λx]=Eig (Ruu) (formula 2) obtains the characteristic value of the uplink subband；Wherein,
The Ruu is the covariance matrix of the uplink Whole frequency band, and the Eig is characterized value operation splitting, the EigVec be characterized to
Amount, the λxFor the characteristic value of the uplink subband；And according to formula λ=Avg (λ0,λ1,…λx) (formula 4) obtain it is described on
The characteristic value of row Whole frequency band, wherein the λ is the characteristic value of the uplink Whole frequency band；And according to formula(formula 3) obtains the SINR compensation rate of the uplink subband；Wherein, the P is the uplink subband
SINR compensation rate.
It is obtained specifically, the first acquisition module 11 carries out feature decomposition according to covariance matrix Ruu of the formula 2 to uplink Whole frequency band
To λx.Here λxThe characteristic value of multiple uplink subbands is also referred to, such as: the eigenvalue λ of uplink subband 00, uplink subband 1
Eigenvalue λ1, uplink subband x eigenvalue λxDeng.Optionally, which can be obtained according to SRS sub-band channel response matrix
The covariance matrix of Whole frequency band.When the first acquisition module 11 obtains the eigenvalue λ of above-mentioned uplink subbandxIt later, can be according to formula 4
To the λxArithmetic average is taken, λ is obtained.P in above-mentioned formula 3 can be the SINR compensation rate of multiple uplink subbands, such as: uplink
The SINR compensation rate of the SINR compensation rate uplink subband 1 of subband 0Uplink
The SINR compensation rate of subband xDeng.
On the basis of the above embodiments, as the third possible embodiment of the embodiment of the present invention, the present embodiment
What is involved is first to obtain another detailed process that module 11 obtains the SINR compensation rate of uplink subband.Above-mentioned first obtains module
11, it is specifically used for according to formula [EigVec, λx]=Eig (Ruu) (formula 2) obtains the characteristic value of the uplink subband；Wherein,
The Ruu is the covariance matrix of the uplink Whole frequency band, and the Eig is characterized value operation splitting, the EigVec be characterized to
Amount, the λxFor the characteristic value of the uplink subband；And according to formulaThe σ is to make an uproar
Sound variance (formula 5) obtains the characteristic value of the uplink Whole frequency band, wherein the λ is the characteristic value of the uplink Whole frequency band；And
According to formula(formula 3) obtains the SINR compensation rate of the uplink subband；Wherein, the P is described
The SINR compensation rate of uplink subband.
It is obtained specifically, the first acquisition module 11 carries out feature decomposition according to covariance matrix Ruu of the formula 2 to uplink Whole frequency band
To λx.Here λxThe characteristic value of multiple uplink subbands is also referred to, such as: the eigenvalue λ of uplink subband 00, uplink subband 1
Eigenvalue λ1, uplink subband x eigenvalue λxDeng.Optionally, which can be obtained according to SRS sub-band channel response matrix
The covariance matrix of Whole frequency band.When the first acquisition module 11 obtains the eigenvalue λ of above-mentioned uplink subbandxIt later, can be according to formula 5
To the λxExponential average is carried out, λ is obtained.Here λxRefer to the characteristic value of x-th of uplink subband.EESM in formula 5 is to refer to
The effective SINR mapping (Exponential Effective SIR Mapping, hereinafter referred to as EESM) of number.P in above-mentioned formula 3
It can be the SINR compensation rate of multiple uplink subbands, such as: in the SINR compensation rate of uplink subband 0
The SINR compensation rate of row subband 1The SINR compensation rate of uplink subband xDeng.
Further, on the basis of the above embodiments, the second acquisition module 12 can be according to SINRx=SINR+P is (public
Formula 6) it obtains and selects SINR frequently；Wherein, the SINRxSelecting SINR, the SINR for the frequency is above-mentioned Whole frequency band SINR.The SINRx
It can be multiple, the i.e. SINR of different sub-band.
It further, can characteristic value to above-mentioned Whole frequency band and upper in order to make frequency obtained select SINR more accurate
The characteristic value of row subband carries out noise reduction process.Specifically, the first acquisition module 11 can basis(formula 7) is to upper
The characteristic value of row Whole frequency band carries out noise reduction process, the characteristic value of the uplink Whole frequency band after obtaining noise reduction processWherein, σ is to make an uproar
Sound variance；Also, first obtain module 11 also according toThe characteristic value of above-mentioned uplink subband drops in (formula 8)
It makes an uproar processing, the characteristic value of the uplink subband after obtaining noise reduction processFinally, the first acquisition module 11 can be according to formula(formula 9) obtains the SINR compensation rate of above-mentioned uplink subband.
Optionally, when above-mentioned Whole frequency band SINR parameter is downlink Whole frequency band CQI, selecting SINR frequently is above-mentioned uplink subband pair
The SINR for the downlink subband answered then described second obtains module 12, specifically for the SINR compensation rate according to the uplink subband
The downlink Whole frequency band SINR is compensated, the SINR of downlink subband is obtained；Then second determining module 13, is specifically used for
Determine that the downlink frequency selects CQI according to the SINR of the downlink subband.
Specifically, that is, what base station obtained is the downlink that UE is reported when above-mentioned Whole frequency band SINR parameter is downlink Whole frequency band CQI
Whole frequency band CQI, then downlink Whole frequency band SINR can be calculated according to downlink Whole frequency band CQI in the first determining module 10；First obtains
Modulus block 11 is according to above-mentioned formula 1 and formula 2, alternatively, formula 2 and formula 4, alternatively, formula 2 and formula 5 are to uplink Whole frequency band
Covariance matrix carry out feature decomposition, obtain the characteristic value of uplink Whole frequency band and the characteristic value of uplink subband, obtain here
The characteristic value of uplink subband can be the characteristic value of multiple uplink subbands, such as: the eigenvalue λ of uplink subband 00, uplink subband 1
Eigenvalue λ1, uplink subband x eigenvalue λxDeng then first obtaining module 11 and obtain uplink subband according to formula 3 or formula 9
SINR compensation rate may be multiple, such as: the SINR compensation rate uplink subband of uplink subband 0
1 SINR compensation rateThe SINR compensation rate of uplink subband xDeng.
Second obtains module 12 can mend according to the SINR that formula 6 and above-mentioned first obtain the uplink subband that module 11 obtains
The amount of repaying compensates downlink Whole frequency band SINR, obtains the SINR of downlink subband, and optionally, a uplink subband is one corresponding
Downlink subband, the corresponding SINR of a downlink subband, above-mentioned downlink subband SINR can be multiple.Such as: by uplink subband 0
SINR compensation rate P0It compensates on downlink Whole frequency band SINR, the SINR of downlink subband 0, i.e. SINR can be obtained0=SINR+P0
(uplink subband 0 and the actually subband of downlink subband 0)；By the SINR compensation rate P of uplink subband 11It is complete to compensate downlink
On frequency band SINR, the SINR of downlink subband 1, i.e. SINR can be obtained1=SINR+P1(uplink subband 1 and downlink subband 1 are actually
It is a subband)；By the SINR compensation rate P of uplink subband xxIt compensates on downlink Whole frequency band SINR, downlink subband x can be obtained
SINR, i.e. SINRx=SINR+Px(uplink subband x be actually a subband with downlink subband x).
Finally, the SINR amount of progress that the second determining module 13 can obtain the downlink subband that module 12 obtains to above-mentioned second
Change obtains the corresponding downlink frequency of downlink subband and selects CQI.
Frequency provided in an embodiment of the present invention selects the acquisition device of Signal to Interference plus Noise Ratio parameter, by the first determining module according to acquisition
Downlink Whole frequency band CQI determine downlink Whole frequency band SINR, first to obtain module complete according to the characteristic value and uplink of uplink Whole frequency band
The characteristic value of uplink subband in frequency band obtains the SINR compensation rate of uplink subband, and second, which obtains module, obtains module using first
The SINR compensation rate of the uplink subband of acquisition compensates downlink Whole frequency band SINR, obtains corresponding downlink of the uplink subband
The SINR of band determines that downlink frequency selects CQI using the SINR of the downlink subband finally by the second determining module.The embodiment of the present invention
The device of offer, base station no longer needs UE to report when the downlink frequency for obtaining a certain downlink subband selects CQI, to be greatly saved
The resource overhead of system.
Optionally, when above-mentioned Whole frequency band SINR parameter is in addition to further including uplink Whole frequency band including above-mentioned downlink Whole frequency band CQI
When MCS, SINR is selected frequently both include the SINR of downlink subband, also include the SINR of uplink subband；Then described second module 12 is obtained,
It is also used to compensate the Whole frequency band SINR according to the SINR compensation rate of the uplink subband, obtains the uplink subband
SINR；Then second determining module 13 is also used to determine that the upper line frequency selects MCS according to the SINR of the uplink subband.
Specifically, further including uplink Whole frequency band when above-mentioned Whole frequency band SINR parameter is in addition to including above-mentioned downlink Whole frequency band CQI
When MCS, uplink Whole frequency band SINR can be calculated according to uplink Whole frequency band MCS in the first determining module 10；First obtains module
11 according to above-mentioned formula 1 and formula 2, alternatively, formula 2 and formula 4, alternatively, the association side of formula 2 and formula 5 to uplink Whole frequency band
The feature decomposition that poor battle array carries out, obtains the characteristic value of uplink Whole frequency band and the characteristic value of uplink subband, uplink obtained here
The characteristic value of band can be the characteristic value of multiple uplink subbands, such as: the eigenvalue λ of uplink subband 00, uplink subband 1 feature
Value λ1, uplink subband x eigenvalue λxDeng then first obtaining the SINR that module 11 obtains uplink subband according to formula 3 or formula 9
Compensation rate may be multiple, such as: the SINR compensation rate of uplink subband 0The SINR of uplink subband 1
Compensation rateThe SINR compensation rate etc. of uplink subband x.
Second obtains module 12 can mend according to the SINR that formula 6 and above-mentioned first obtain the uplink subband that module 11 obtains
The amount of repaying compensates uplink Whole frequency band SINR, obtains the SINR of uplink subband, and optionally, uplink subband SINR can also be with
It is multiple.Such as: by the SINR compensation rate P of uplink subband 00It compensates on uplink Whole frequency band SINR, uplink subband 0 can be obtained
SINR, i.e. SINR0=SINR+P0；By the SINR compensation rate P of uplink subband 11It compensates on uplink Whole frequency band SINR, can obtain
To the SINR of uplink subband 1, i.e. SINR1=SINR+P1；By the SINR compensation rate P of uplink subband xxCompensate uplink Whole frequency band
On SINR, the SINR of uplink subband x, i.e. SINR can be obtainedx=SINR+Px。
Finally, the SINR amount of progress that the second determining module 13 can obtain the uplink subband that module 12 obtains to above-mentioned second
Change obtains the corresponding upper line frequency of the uplink subband and selects MCS.
Frequency provided in an embodiment of the present invention selects the acquisition device of Signal to Interference plus Noise Ratio parameter, by the first determining module according to acquisition
Uplink Whole frequency band MCS determine uplink Whole frequency band SINR, first to obtain module complete according to the characteristic value and uplink of uplink Whole frequency band
The characteristic value of uplink subband in frequency band obtains the SINR compensation rate of uplink subband, and second, which obtains module, obtains module using first
The SINR compensation rate of the uplink subband of acquisition compensates uplink Whole frequency band SINR, obtains the SINR of uplink subband, finally leads to
It crosses the second determining module and selects MCS using line frequency in the SINR determination of the uplink subband.Device provided in an embodiment of the present invention improves
The accuracy of scheduling of resource.
Fig. 3 is the process signal for the acquisition methods embodiment one that frequency provided in an embodiment of the present invention selects Signal to Interference plus Noise Ratio parameter
Figure.The executing subject of this method can select the acquisition device of Signal to Interference plus Noise Ratio parameter for the frequency in above-described embodiment.As shown in figure 3,
This method comprises:
S101: Whole frequency band SINR is determined according to the Whole frequency band SINR parameter of acquisition；Wherein, the Whole frequency band SINR parameter packet
Downlink Whole frequency band CQI is included, the Whole frequency band SINR includes downlink Whole frequency band SINR.
S102: institute is obtained according to the characteristic value of the uplink subband in the characteristic value of uplink Whole frequency band and the uplink Whole frequency band
State the SINR compensation rate of uplink subband.
S103: compensating the Whole frequency band SINR according to the SINR compensation rate of the uplink subband, obtains frequency and selects
SINR；Wherein, it includes the SINR of downlink subband that the frequency, which selects SINR, and the SINR compensation rate of the uplink subband is the Whole frequency band
The difference of the SINR of SINR and the uplink subband.
S104: SINR is selected to determine that frequency selects SINR parameter according to the frequency；Wherein, it includes downlink frequency that the frequency, which selects SINR parameter,
Select CQI.
Frequency provided in an embodiment of the present invention selects the acquisition methods of Signal to Interference plus Noise Ratio parameter, is referred to above-mentioned frequency and selects Signal to Interference plus Noise Ratio
The implementation procedure of the embodiment of the acquisition device of parameter, implementing principle and technical effect are substantially similar, and details are not described herein.
Further, above-mentioned Whole frequency band SINR parameter further includes uplink Whole frequency band MCS；Then the frequency selects on SINR further includes
The SINR of row subband；It further includes that upper line frequency selects MCS that then the frequency, which selects SINR parameter,.
Optionally, frequency shown in Figure 4 selects the flow diagram of the acquisition methods embodiment two of Signal to Interference plus Noise Ratio parameter.Such as
Shown in Fig. 4, above-mentioned S102 may include:
S201: the characteristic value of the uplink Whole frequency band is obtained according to above-mentioned formula 1.
S202: the characteristic value of the uplink subband is obtained according to above-mentioned formula 2.
S203: the SINR compensation rate of the uplink subband is obtained according to above-mentioned formula 3.
Optionally, frequency shown in Figure 5 selects the flow diagram of the acquisition methods embodiment three of Signal to Interference plus Noise Ratio parameter.Such as
Shown in Fig. 5, above-mentioned S102 may include:
S301: the characteristic value of the uplink subband is obtained according to above-mentioned formula 2.
S302: the characteristic value of the uplink Whole frequency band is obtained according to above-mentioned formula 4.
S303: the SINR compensation rate of the uplink subband is obtained according to above-mentioned formula 3.
Optionally, frequency shown in Figure 6 selects the flow diagram of the acquisition methods example IV of Signal to Interference plus Noise Ratio parameter.Such as
Shown in Fig. 6, above-mentioned S102 may include:
S401: the characteristic value of the uplink subband is obtained according to above-mentioned formula 2.
S402: the characteristic value of the uplink Whole frequency band is obtained according to above-mentioned formula 5.
S403: the SINR compensation rate of the uplink subband is obtained according to above-mentioned formula 3.
Frequency provided in an embodiment of the present invention selects the acquisition methods of Signal to Interference plus Noise Ratio parameter, is referred to above-mentioned frequency and selects Signal to Interference plus Noise Ratio
The implementation procedure of the embodiment of the acquisition device of parameter, implementing principle and technical effect are substantially similar, and details are not described herein.
Further, above-mentioned S103 is specifically included: according to above-mentioned formula 6:SINRx=SINR+P obtains the frequency choosing
SINR；Wherein, the SINRxSelecting SINR, the SINR for the frequency is the Whole frequency band SINR.
Further, frequency shown in Figure 7 selects the flow diagram of the acquisition methods embodiment five of Signal to Interference plus Noise Ratio parameter.
As shown in fig. 7, above-mentioned S203 or S303 or S403, can specifically include:
S501: noise reduction process is carried out according to characteristic value of the above-mentioned formula 7 to the uplink Whole frequency band, is obtainedWherein, institute
It statesFor the characteristic value of the uplink Whole frequency band after noise reduction process, the σ is noise variance.
S502: noise reduction process is carried out according to characteristic value of the above-mentioned formula 8 to the uplink subband, is obtainedWherein, describedFor the characteristic value of the uplink subband after noise reduction process, the σ is noise variance.
S503: the SINR compensation rate of the uplink subband is obtained according to formula above-mentioned formula 9.
Optionally, when the Whole frequency band SINR parameter includes the downlink Whole frequency band CQI；Then above-mentioned S103 is specifically wrapped
It includes: the downlink Whole frequency band SINR being compensated according to the SINR compensation rate of the uplink subband, obtain downlink subband
SINR；Then above-mentioned S104 is specifically included: determining that the downlink frequency selects CQI according to the SINR of the downlink subband.
Further, when the Whole frequency band SINR parameter is in addition to further including the uplink including above-mentioned downlink Whole frequency band CQI
When Whole frequency band MCS；Then above-mentioned S103 further include: according to the SINR compensation rate of the uplink subband to the uplink Whole frequency band SINR
It compensates, obtains the SINR of the uplink subband；Then above-mentioned S104 is specifically included: being determined according to the SINR of the uplink subband
The upper line frequency selects MCS.
Frequency provided in an embodiment of the present invention selects the acquisition methods of Signal to Interference plus Noise Ratio parameter, is referred to above-mentioned frequency and selects Signal to Interference plus Noise Ratio
The implementation procedure of the embodiment of the acquisition device of parameter, implementing principle and technical effect are substantially similar, and details are not described herein.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above-mentioned each method embodiment can lead to
The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer readable storage medium.The journey
When being executed, execution includes the steps that above-mentioned each method embodiment to sequence；And storage medium above-mentioned include: ROM, RAM, magnetic disk or
The various media that can store program code such as person's CD.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (14)
1. the acquisition device that a kind of frequency selects Signal to Interference plus Noise Ratio parameter characterized by comprising
First determining module, for determining Whole frequency band SINR according to the Whole frequency band Signal to Interference plus Noise Ratio SINR parameter of acquisition；Wherein, described
Whole frequency band SINR parameter includes downlink Whole frequency band channel quality indicator (CQI), and the Whole frequency band SINR includes downlink Whole frequency band SINR；
First obtains module, the feature for the uplink subband in the characteristic value and the uplink Whole frequency band according to uplink Whole frequency band
Value obtains the SINR compensation rate of uplink subband；
Second acquisition module is obtained for being compensated according to the SINR compensation rate of the uplink subband to the Whole frequency band SINR
It obtains and selects SINR frequently；Wherein, it includes the SINR of downlink subband that the frequency, which selects SINR, and the SINR compensation rate of the uplink subband is described
The difference of the SINR of Whole frequency band SINR and the uplink subband；
Second determining module, for selecting SINR to determine that frequency selects SINR parameter according to the frequency；Wherein, the frequency selects SINR parameter packet
It includes downlink frequency and selects CQI.
2. the apparatus according to claim 1, which is characterized in that the Whole frequency band SINR parameter further includes uplink Whole frequency band tune
Coding strategy MCS processed, then it further includes the SINR of uplink subband that the frequency, which selects SINR, and it further includes upper line frequency that the frequency, which selects SINR parameter,
Select MCS.
3. device according to claim 1 or 2, which is characterized in that described first obtains module, is specifically used for according to formula
[EigVec, λ]=Eig (Ruu) obtains the characteristic value of the uplink Whole frequency band；Wherein, the Ruu is the association side of uplink Whole frequency band
Poor battle array, the Eig are characterized value operation splitting, and the EigVec is feature vector, and the λ is the feature of the uplink Whole frequency band
Value；And according to formula [EigVec, λx]=Eig (Ruu) obtains the characteristic value of the uplink subband；Wherein, the λxOn described
The characteristic value of row subband；And according to formulaObtain the SINR compensation rate of the uplink subband；Wherein, institute
State the SINR compensation rate that P is the uplink subband.
4. device according to claim 1 or 2, which is characterized in that described first obtains module, is specifically used for according to formula
[EigVec,λx]=Eig (Ruu) obtains the characteristic value of the uplink subband；Wherein, the Ruu is the uplink Whole frequency band
Covariance matrix, the Eig are characterized value operation splitting, and the EigVec is feature vector, the λxFor the uplink subband
Characteristic value；And according to formula λ=Avg (λ0,λ1,…λx) obtaining the characteristic value of the uplink Whole frequency band, wherein the λ is described
The characteristic value of uplink Whole frequency band；And according to formulaObtain the SINR compensation rate of the uplink subband；Its
In, the P is the SINR compensation rate of the uplink subband.
5. device according to claim 1 or 2, which is characterized in that described first obtains module, is specifically used for according to formula
[EigVec,λx]=Eig (Ruu) obtains the characteristic value of the uplink subband；Wherein, the Ruu is the uplink Whole frequency band
Covariance matrix, the Eig are characterized value operation splitting, and the EigVec is feature vector, the λxFor the uplink subband
Characteristic value；And according to formulaObtain the characteristic value of the uplink Whole frequency band, wherein institute
The characteristic value that λ is the uplink Whole frequency band is stated, the σ is noise variance；And according to formulaDescribed in acquisition
The SINR compensation rate of uplink subband；Wherein, the P is the SINR compensation rate of the uplink subband.
6. the apparatus according to claim 1, which is characterized in that described second obtains module, is specifically used for according to SINRx=
SINR+P obtains the frequency and selects SINR；Wherein, the SINRxSelecting SINR, the SINR for the frequency is the Whole frequency band SINR,
The P is the SINR compensation rate of the uplink subband.
7. device according to claim 6, which is characterized in that described first obtains module, is specifically used for basisNoise reduction process is carried out to the characteristic value of the uplink Whole frequency band, is obtainedWherein, describedAfter noise reduction process
The characteristic value of uplink Whole frequency band, the σ are noise variance；And according toThe characteristic value of the uplink subband is carried out
Noise reduction process obtainsWherein, describedFor the characteristic value of the uplink subband after noise reduction process；And according to formulaObtain the SINR compensation rate of the uplink subband.
8. the acquisition methods that a kind of frequency selects Signal to Interference plus Noise Ratio parameter characterized by comprising
Whole frequency band SINR is determined according to the Whole frequency band Signal to Interference plus Noise Ratio SINR parameter of acquisition；Wherein, the Whole frequency band SINR parameter packet
Downlink Whole frequency band channel quality indicator (CQI) is included, the Whole frequency band SINR includes downlink Whole frequency band SINR；
Uplink is obtained according to the characteristic value of the uplink subband in the characteristic value of uplink Whole frequency band and the uplink Whole frequency band
The SINR compensation rate of band；
The Whole frequency band SINR is compensated according to the SINR compensation rate of the uplink subband, frequency is obtained and selects SINR；Wherein, institute
Stating frequency and selecting SINR includes downlink subband SINR, and the SINR compensation rate of the uplink subband is the Whole frequency band SINR and the uplink
The difference of the SINR of subband；
SINR is selected to determine that frequency selects SINR parameter according to the frequency；Wherein, it includes that downlink frequency selects CQI that the frequency, which selects SINR parameter,.
9. according to the method described in claim 8, it is characterized in that, the Whole frequency band SINR parameter further includes uplink Whole frequency band tune
Coding strategy MCS processed；It further includes the SINR of uplink subband that then the frequency, which selects SINR,；It further includes uplink that then the frequency, which selects SINR parameter,
Frequency selects MCS.
10. method according to claim 8 or claim 9, which is characterized in that the characteristic value according to uplink Whole frequency band and described
The characteristic value of uplink subband in uplink Whole frequency band obtains the SINR compensation rate of the uplink subband, comprising:
The characteristic value of the uplink Whole frequency band is obtained according to formula [EigVec, λ]=Eig (Ruu)；Wherein, the Ruu is uplink
The covariance matrix of Whole frequency band, the Eig are characterized value operation splitting, and the EigVec is feature vector, and the λ is the uplink
The characteristic value of Whole frequency band；
According to formula [EigVec, λx]=Eig (Ruu) obtains the characteristic value of the uplink subband；Wherein, the Ruu is on described
The covariance matrix of row Whole frequency band, the Eig are characterized value operation splitting, and the EigVec is feature vector, the λxIt is described
The characteristic value of uplink subband；
According to formulaObtain the SINR compensation rate of the uplink subband；Wherein, the P is the uplink
The SINR compensation rate of subband.
11. method according to claim 8 or claim 9, which is characterized in that the characteristic value according to uplink Whole frequency band and described
The characteristic value of uplink subband in uplink Whole frequency band obtains the SINR compensation rate of the uplink subband, comprising:
According to formula [EigVec, λx]=Eig (Ruu) obtains the characteristic value of the uplink subband；Wherein, the Ruu is on described
The covariance matrix of row Whole frequency band, the Eig are characterized value operation splitting, and the EigVec is feature vector, the λxIt is described
The characteristic value of uplink subband；
According to formula λ=Avg (λ0,λ1,…λx) obtaining the characteristic value of the uplink Whole frequency band, wherein the λ is the uplink
The characteristic value of Whole frequency band；
According to formulaObtain the SINR compensation rate of the uplink subband；Wherein, the P is the uplink
The SINR compensation rate of subband.
12. method according to claim 8 or claim 9, which is characterized in that the characteristic value according to uplink Whole frequency band and described
The characteristic value of uplink subband in uplink Whole frequency band obtains the SINR compensation rate of the uplink subband, comprising:
According to formula [EigVec, λx]=Eig (Ruu) obtains the characteristic value of the uplink subband；Wherein, the Ruu is on described
The covariance matrix of row Whole frequency band, the Eig are characterized value operation splitting, and the EigVec is feature vector, the λxIt is described
The characteristic value of uplink subband；
According to formulaObtain the characteristic value of the uplink Whole frequency band, wherein the λ is
The characteristic value of the uplink Whole frequency band, the σ are noise variance；
According to formulaObtain the SINR compensation rate of the uplink subband；Wherein, the P is the uplink
The SINR compensation rate of subband.
13. according to the method described in claim 8, it is characterized in that, according to the SINR compensation rate of the uplink subband to described
Whole frequency band SINR is compensated, and is obtained frequency and is selected SINR, comprising:
According to SINRx=SINR+P obtains the frequency and selects SINR；Wherein, the SINRxSINR, the SINR is selected to be for the frequency
The Whole frequency band SINR, the P are the SINR compensation rate of the uplink subband.
14. according to the method for claim 13, which is characterized in that according to formulaIt obtains on described
The SINR compensation rate of row subband；It specifically includes:
According toNoise reduction process is carried out to the characteristic value of the uplink Whole frequency band, is obtainedWherein, describedFor noise reduction
The characteristic value of treated uplink Whole frequency band, the σ are noise variance；
According toNoise reduction process is carried out to the characteristic value of the uplink subband, is obtainedWherein, describedFor noise reduction
The characteristic value of treated uplink subband, the σ are noise variance；
According to formulaObtain the SINR compensation rate of the uplink subband.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410436869.0A CN105376010B (en) | 2014-08-29 | 2014-08-29 | Frequency selects the acquisition methods and device of Signal to Interference plus Noise Ratio parameter |
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