CN104518999A - Method and system for determining received power of reference signal, and mobile terminal - Google Patents

Abstract

Embodiments of the invention relate to the technical field of communication, and disclose a method and a system for determining received power of a reference signal, and a mobile terminal. The method comprises: according to a preset grouping rule, dividing a plurality of to-be-tested cells into N groups, N being a positive integer larger than or equal to 1; the preset grouping rule being that cells whose differences of synchronous position information are lower than a preset threshold are divided into a group; and using a first method to synchronize or processing each group in sequence, to determine received power of a reference signal of a to-be-tested cell in each group. Using the method and the system can determine processing complexity of received power of reference signals, thereby improving processing power.

Description

Determine the method for Reference Signal Received Power, system and mobile terminal

Technical field

The present invention relates to communication technical field, be specifically related to a kind of method, system and the mobile terminal of determining Reference Signal Received Power.

Background technology

In mobile communication system, for ensureing the quality of service of mobile subscriber, and make mobile subscriber obtain good Consumer's Experience, the gravity treatment between community must complete fast and accurately with switching.If terminal certainty of measurement is too low, the mobility that can affect user is experienced, and also can hinder system RRM(Radio ResourceManagement, RRM), cause the decline of systematic function.In LTE and lte-a system, if Reference Signal Received Power (Reference Signal Receiving Power is called for short RSRP) estimated performance is too low, whole system transmission quality will be affected.

Signal transmission in LTE or lte-a system in a time slot can describe with resource lattice, and its size is individual subcarrier and individual OFDM(Orthogonal Frequency DivisionMultiplexing, OFDM) symbol, Fig. 1 is shown in by resource lattice structure.Wherein, size depend on downstream transmission bandwidth in community configuration and meet: wherein minimum and the maximum bandwidth of corresponding downlink transfer respectively. represent continuous print subcarrier in frequency domain number in a PRB, represent the OFDM symbol number in a descending time slot, represent the bandwidth of downlink transfer, with minimum and the maximum bandwidth of corresponding downlink transfer respectively.

In lte-a system, measurement subsystem supports IDLE(idle condition) state, CONNECTED(connect) state, IRAT(Inter Radio Access Technology, different systematic evaluation) various physical layer measurement function under state.Wherein IDLE, CONNECTED state Service supportive community, same to frequency, different-frequency measure etc. respectively.In addition, lte-a system is introduced heterogeneous network interference coordination and is strengthened technology eICIC (EnhancedInter-Cell Interference Coordination, the presence of intercell interference strengthened is worked in coordination with) and carrier aggregation (CarrierAggregation is called for short CA) technology.Heterogeneous network refers to that low power nodes is placed in macro base station coverage area by cloth, forms the heterogeneous system with the different node types covered.Under eICIC scene, subscriber equipment (UserEquipment, be called for short UE) hold Reference Signal Received Power (the ReferenceSignal Receiving Power needed with the adjacent cell covered, be called for short RSRP) and Reference Signal Received Quality (Reference SignalReceiving Quality, be called for short RSRQ) measure, to select optimum community.Under CA scene, transmission bandwidth is by a main member carrier (Primary Component Carrier, be called for short PCC) and one or more member carriers (Secondary Component Carrier is called for short SCC) formations, UE has needed the measurement to each member carrier.Summarize it, from whole lte-a system, more frequent to measurement task scheduling frequency, close from power saving and task cooperation and fasten, lte-a system proposes higher demand to measuring system: certainty of measurement is higher, and it is lower that measurement scheme realizes cost, measures power consumption less.

In prior art, measurement scheme usually comprises time domain and estimates to estimate two schemes with frequency domain.

Such as, Authorization Notice No. is that the Chinese patent of CN102196486B discloses a kind of time domain estimation scheme, it obtains measured value mainly through the time domain channel impulse responding power that reference signal is corresponding, the program is owing to can distinguish signal footpath and noise path by effective, its estimated performance is relatively better, but implementation complexity is high, because the community number of a sending measuring may be a lot of under LTE-A complex scene, want the measurement completing all communities within measuring period, the resources such as required hardware are very high, therefore when current hardware finite, the program uses limited.

Authorization Notice No. is that the Chinese patent of CN101599939B discloses a kind of frequency domain estimation scheme, obtain mainly through carrying out the superposition of corresponding piecemeal to frequency domain channel impulse response, because used channel impulse response is by the impact of the factors such as time delay, frequency deviation, decline in the program, adopt the mode dividing related blocks to balance the impact of each factor, implementation complexity is lower.But because the program needs balance " equilibrium noise impact needs as far as possible large related blocks " and " equalization channel imbalance needs as far as possible little related blocks " this two-phase contradictory problems as far as possible, and be difficult to reach useful effect, under the effective condition of measurement sample, the measurement performance demand of LTE or lte-a system can not be met.

In sum, time domain of the prior art estimates all can not to meet with frequency domain estimation scheme present LTE or lte-a system to the requirement of the task of measurement.

Summary of the invention

Embodiment of the present invention technical problem to be solved is to provide a kind of method, system and the mobile terminal of determining Reference Signal Received Power, for reducing the process complexity determining Reference Signal Received Power, promotes treatment effeciency.

The embodiment of the present invention provides a kind of method determining Reference Signal Received Power, comprising:

According to predetermined rule of classification, multiple microzonation to be measured is divided into N group; N be more than or equal to 1 positive integer, described predetermined rule of classification is the difference of intercell synchronous positional information is less than the little of predetermined threshold to divide into one group;

First method is adopted synchronously or sequentially to process each group, to determine the Reference Signal Received Power of community to be measured in described each group; Wherein said first method comprises:

From first group, choose the first community carry out time-domain signal reception, the frequency domain data of described first community is obtained after fast Fourier transform process is carried out to the time-domain signal received, and using frequency domain data shared as described first Zu Ge community for the frequency domain data of described first community; Described first group is in described N group any one group, and described first group comprises M community, and described first community is any one community in described first group;

Use described shared frequency domain data to carry out least square LS estimation respectively to described first Zu Ge community, obtain the channel estimation in frequency domain result List_Id_Ls (m, k, l) of described first Zu Ge community; Wherein, 1≤m≤M, 1≤k≤2NRB, 1≤l≤4, NRB represents the number of Physical Resource Block corresponding in Measurement bandwidth;

Judge whether the community number in described first group is greater than predetermined value, if, described channel estimation in frequency domain result according to described first Zu Zhongge community carries out the rough estimate of frequency domain measurement value, obtains the rough estimate evaluation of the Reference Signal Received Power RSRP of described first Zu Zhongge community;

According to the rough estimate evaluation of the RSRP of described first Zu Zhongge community, filter out the community of C at the most that RSRP is maximum; C is predetermined positive integer;

Time domain estimation is carried out respectively at the most C the community larger to RSRP in described first group, obtains the smart estimated value of the RSRP of C community at the most described in described first group respectively.

Accordingly, the embodiment of the present invention also provides a kind of system determining Reference Signal Received Power, and described system comprises:

Grouping module, for according to predetermined rule of classification, is divided into N group by multiple microzonation to be measured; N be more than or equal to 1 positive integer, described predetermined rule of classification is the difference of intercell synchronous positional information is less than the little of predetermined threshold to divide into one group;

Processing module, for adopting first method synchronously or sequentially to process each group, to determine the Reference Signal Received Power of community to be measured in described each group; Wherein said first method comprises:

From first group, choose the first community carry out time-domain signal reception, the frequency domain data of described first community is obtained after fast Fourier transform process is carried out to the time-domain signal received, and using frequency domain data shared as described first Zu Ge community for the frequency domain data of described first community; Described first group is in described N group any one group, and described first group comprises M community, and described first community is any one community in described first group;

Use described shared frequency domain data to carry out least square LS estimation respectively to described first Zu Ge community, obtain the channel estimation in frequency domain result List_Id_Ls (m, k, l) of described first Zu Ge community; Wherein, 1≤m≤M, 1≤k≤2NRB, 1≤l≤4, NRB represents the number of Physical Resource Block corresponding in Measurement bandwidth;

Judge whether the community number in described first group is greater than predetermined value, if, described channel estimation in frequency domain result according to described first Zu Zhongge community carries out the rough estimate of frequency domain measurement value, obtains the rough estimate evaluation of the Reference Signal Received Power RSRP of described first Zu Zhongge community;

According to the rough estimate evaluation of the RSRP of described first Zu Zhongge community, filter out the community of C at the most that RSRP is maximum; C is predetermined positive integer;

Time domain estimation is carried out respectively at the most C the community larger to RSRP in described first group, obtains the accurate estimated result of the RSRP of C community at the most described in described first group respectively.

Accordingly, the embodiment of the present invention also provides a kind of mobile terminal, and described mobile terminal comprises the system determining Reference Signal Received Power foregoing.

In the embodiment of the present invention, after rationally being divided into groups in community to be measured, identical reception data can be used with the community in group, open frequently when multiple cell not only can be avoided to measure to receive and drive, receive data sharing owing to existing between multiple cell simultaneously, process complexity can be effectively reduced, greatly improve simultaneously and measure efficiency.In addition, have employed in the embodiment of the present invention and can resist the Preliminary screening that larger synchronism deviation RSRP rough estimate scheme carries out efficient cell, reduce subsequent treatment complexity, improve treatment effeciency simultaneously, then the community filtered out RSRP rough estimate is carried out RSRP and is accurately estimated, can improve the precision of cell measurement.

Term " first ", " second ", " the 3rd " " 4th " etc. (if existence) in specification of the present invention and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so as embodiments of the invention described herein such as can with except here diagram or describe those except order implement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the structural representation of resource lattice in lte-a system;

Fig. 2 is the method flow schematic diagram that the embodiment of the present invention one determines Reference Signal Received Power;

Fig. 3 is flow process first schematic diagram that the embodiment of the present invention two determines the method for Reference Signal Received Power;

Fig. 4 is flow process second schematic diagram that the embodiment of the present invention two determines the method for Reference Signal Received Power;

Fig. 5 is flow process the 3rd schematic diagram that the embodiment of the present invention two determines the method for Reference Signal Received Power;

Fig. 6 is flow process the 4th schematic diagram that the embodiment of the present invention two determines the method for Reference Signal Received Power;

Fig. 7 is structure first schematic diagram that the embodiment of the present invention three determines the system of Reference Signal Received Power;

Fig. 8 is structure second schematic diagram that the embodiment of the present invention three determines the system of Reference Signal Received Power;

Fig. 9 is structure the 3rd schematic diagram that the embodiment of the present invention three determines the system of Reference Signal Received Power;

Figure 10 is system configuration the 4th schematic diagram that the embodiment of the present invention three determines Reference Signal Received Power;

Figure 11 is system configuration the 5th schematic diagram that the embodiment of the present invention three determines Reference Signal Received Power;

Figure 12 is system configuration the 6th schematic diagram that the embodiment of the present invention three determines Reference Signal Received Power.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

Provide a kind of method, system and the mobile terminal of determining Reference Signal Received Power in the embodiment of the present invention, for reducing the process complexity determining Reference Signal Received Power, promote treatment effeciency.Below be described in detail respectively.

Embodiment one:

The invention provides a kind of method determining Reference Signal Received Power, as shown in Figure 2, the method can comprise:

201, according to predetermined rule of classification, multiple microzonation to be measured is divided into N group;

N be more than or equal to 1 positive integer, above-mentioned predetermined rule of classification is the difference of intercell synchronous positional information is less than the little of predetermined threshold to divide into one group;

202, first method is adopted synchronously or sequentially to process each group, to determine the Reference Signal Received Power of community to be measured in each group.

Particularly, above-mentioned first method can comprise:

From first group, choose the first community carry out time-domain signal reception, and obtain the frequency domain data of above-mentioned first community after carrying out fast Fourier transform process to the time-domain signal received, and using frequency domain data shared as above-mentioned first Zu Ge community for the frequency domain data of above-mentioned first community; Above-mentioned first group is in above-mentioned N group any one group, and above-mentioned first group comprises M community, and above-mentioned first community is any one community in above-mentioned first group;

Above-mentioned shared frequency domain data is used to carry out LS(LeastSquares respectively, least square to above-mentioned first Zu Ge community) estimate, obtain the channel estimation in frequency domain result List_Id_Ls (m, k, l) of above-mentioned first Zu Ge community; Wherein, 1≤m≤M, 1≤k≤2NRB, 1≤l≤4, NRB represents the number of Physical Resource Block corresponding in Measurement bandwidth;

Judge whether the community number in above-mentioned first group is greater than predetermined value C, if, above-mentioned channel estimation in frequency domain result according to above-mentioned first Zu Zhongge community carries out the rough estimate of frequency domain measurement value, obtains the rough estimate evaluation of the Reference Signal Received Power RSRP of above-mentioned first Zu Zhongge community; C is predetermined positive integer;

According to the rough estimate evaluation of the RSRP of above-mentioned first Zu Zhongge community, filter out the maximum C of a RSRP community;

Time domain estimation is carried out respectively at the most C the community maximum to RSRP in above-mentioned first group, obtains the smart estimated value of the RSRP of the above-mentioned community of C at the most in above-mentioned first group respectively.

In the present embodiment, N group is to be measuredly littlely divided into according to the large young pathbreaker of sync bit information gap is multiple in multiple community to be measured, often group can be used as an entirety and processes, and synchronously can process, or process successively according to certain sequencing between each group.

In the present embodiment, after rationally being divided into groups in community to be measured, identical reception data can be used with the community in group, open frequently when multiple cell not only can be avoided to measure to receive and drive, receive data sharing owing to existing between multiple cell simultaneously, process complexity can be effectively reduced, greatly improve simultaneously and measure efficiency.

In addition, have employed in the present embodiment and can resist the Preliminary screening that larger synchronism deviation RSRP rough estimate scheme carries out efficient cell, reduce subsequent treatment complexity, improve treatment effeciency simultaneously, then the community filtered out RSRP rough estimate is carried out RSRP and is accurately estimated, can improve the precision of cell measurement.

Embodiment two:

The present invention also provides a kind of method determining Reference Signal Received Power, and as shown in Figure 3, the method can comprise:

301, according to predetermined rule of classification, multiple microzonation to be measured is divided into N group;

N be more than or equal to 1 positive integer, above-mentioned predetermined rule of classification is the difference of intercell synchronous positional information is less than the little of predetermined threshold to divide into one group;

Such as, cell ID information to be measured is Measure_Id_List={100,1,200,30,70,90,503,210,56,78,41,304,454,14,32,290,165,124}, sync bit information corresponding to each community to be measured is Measure_Id_Pos={1456,50,1460,59,1477,1399,1450,80,10,9,65,21,88,1444,70,1432,25,1410}, in setting group herein, permissible difference value (predetermined threshold) is 140, then to be measuredly littlely can divide into two groups by above-mentioned, wherein

First group is { 1,30,210,56,78,41,304,454,32,165 }, and the community number of this group is 10;

Second group is { 100,200,70,90,503,14,290,124 }, and the community number of this group is 8;

302, n=1 is preset;

303, from n-th group, choose the first community and carry out time-domain signal reception, the frequency domain data of above-mentioned first community is obtained after fast Fourier transform process is carried out to the time-domain signal received, and using frequency domain data shared as above-mentioned n-th Zu Ge community for the frequency domain data of above-mentioned first community;

Suppose that above-mentioned n-th group comprises M community altogether, above-mentioned first community can be any one community of n-th group, can certainly choosing, being positioned at the community of this group intermediate value as chosen sync bit information according to certain rule;

304, use above-mentioned shared frequency domain data to carry out LS estimation respectively to above-mentioned n-th Zu Ge community, obtain the channel estimation in frequency domain result List_Id_Ls (m, k, l) of above-mentioned first Zu Ge community; Wherein, 1≤m≤M, 1≤k≤2NRB, 1≤l≤4, NRB represents the number of Physical Resource Block corresponding in Measurement bandwidth;

The related content that above-mentioned LS estimates belongs to prior art, does not repeat them here;

305, judge whether the community number M in above-mentioned n-th group is greater than predetermined value C, if so, perform step 306, otherwise perform step 308;

The wherein concrete numerical value of predetermined value C, can set based on the disposal ability during existing network environment and associated terminal, and it is larger that C value sets, and it is stronger to the requirement of device disposal ability, and C value should be greater than 1, as set C=3;

306, carry out the rough estimate of frequency domain measurement value according to the above-mentioned channel estimation in frequency domain result of above-mentioned n-th Zu Zhongge community, obtain the rough estimate evaluation of the Reference Signal Received Power RSRP of above-mentioned first Zu Zhongge community;

The rough estimate evaluation of the RSRP of the n-th Zu Zhongge community 307, calculated according to step 306, filters out the maximum C of a RSRP community;

Particularly, can sort to each community according to RSRP rough estimate evaluation order from big to small, choose a front C community;

308, respectively time domain estimation is carried out to the community of C at the most that RSRP in n-th group is maximum, obtain the smart estimated value of the RSRP of the above-mentioned community of C at the most in above-mentioned n-th group respectively;

It should be noted that, in step 305, if judge that the community number M of n-th group is less than or equal to C, rough estimate evaluation then without using RSRP screens, the all selected execution step 308 in all communities of n-th group carries out time domain estimation, if this is because the community number M in n-th group is less than or equal to predetermined value C, then think that community to be measured number is few in this group, for the situation that community number is few, calculate by rough estimate described in step 306-308, essence again, can not obviously reduce complexity and power consumption;

309, judge whether n is more than or equal to N, if so, process ends, otherwise perform step 310;

310, n=n+1, performs step 303;

If the RSRP essence estimated value of all groups has all been determined complete, then terminate above-mentioned flow process, otherwise, carry out the RSRP constant current journey really of next group.

In the present embodiment, description be the mode that between each group, employing order performs, certainly, synchronous execution or other suitable executive modes can also be adopted between each group, not do concrete restriction at this.

Concrete, with reference to figure 4, in certain embodiments of the present invention, above-mentioned steps 306 can comprise:

306A, default x=1;

306B, the channel impulse response LS corresponding to a sub-frame reference siganl of xth community _k,lcarry out time delay and frequency deviation Processing for removing: LS' _k,l=LS _k,l* conj (LS _{k+1, l});

In the present embodiment, suppose the channel impulse response LS that one of xth community sub-frame reference siganl position is corresponding _k,lfor the channel estimation in frequency domain result List_Id_Ls (x, k, l) of this xth community;

In the present embodiment, coefficient correlation equivalence corresponding for channel impulse response corresponding for neighboring reference signal location is set to 1, then above-mentioned LS' _k,lcan abbreviation be:

LS' _k,l=LS _k,l*conj(LS _k+1,l)

=(H _k,l*exp(j*θ _l+j*2*pi*k*dis/2048)+n _k,l)

*conj(H _k+1,l*exp(j*θ _l+j*2*pi*(k+6)*dis/2048)+n _k+1,l)

=A _k,l*A _k+1,l*h _k,l*h _k+1,l*exp(j*2*pi*6*dis/2048)+n _k,l'

=A _k,l*A _k+1,l*exp(j*2*pi*6*dis/2048)+n _k,l'

=A _k,l ^{^2}*exp(j*2*pi*6*dis/2048)+n _k,l'

The rough estimate evaluation RSRP of Received signal strength RSRP in 306C, the corresponding Measurement bandwidth in calculating xth community _x1:

${\mathrm{RSRP}}_{x1}=|\underset{k}{\mathrm{\Σ}}\underset{l}{\mathrm{\Σ}}{{\mathrm{LS}}^{\′}}_{k,l}/\mathrm{kl}|=\underset{k}{\mathrm{\Σ}}\underset{l}{\mathrm{\Σ}}{A}_{k,l}^{^2}/\mathrm{kl}+\underset{k}{\mathrm{\Σ}}\underset{l}{\mathrm{\Σ}}{n}_{k,l}^{\′}/\mathrm{kl}$

Wherein, in above formula, dis is time delay, A _k,lrepresent LS _k,lthe signal amplitude that l OFDM symbol reference signal in kth on frequency domain, time domain is corresponding, θ _lrepresent due to the first phase that frequency deviation causes in each OFDM symbol, n _k,lrepresent LS _k,lthe noise that l reference signal position in kth on frequency domain, time domain is corresponding, n' _k,lrepresent LS' _k,lthe noise that l reference signal position in kth on frequency domain, time domain is corresponding, H _k,lrepresent LS _k,lideal communication channel impulse response corresponding to l reference signal position in the kth on frequency domain, time domain (do not comprise time delay and frequency deviation factor affects), h _k,lrepresent LS _k,lthe channel impulse response phase information that l reference signal position in kth on frequency domain, time domain is corresponding;

306D, judge whether x is more than or equal to M, if so, perform step 307, otherwise perform step 306E;

306E, x=x+1, perform step 306B.

The above-mentioned description to step 306 have employed the rough estimate evaluation mode of each community order execution being calculated to the Reference Signal Received Power RSRP of the n-th Zu Zhongge community, certainly can also adopt synchronous execution or other suitable executive modes for each community, not do concrete restriction at this.

Wherein above-mentioned steps 306 is not limited to the implementation of above-mentioned 306A-306E, and in other execution modes of the present invention, above-mentioned steps 306 also can comprise:

306A ', default x=1;

306B ', channel impulse response LS corresponding to neighboring reference signal in each OFDM symbol is obtained to xth community _k,lphase difference: △ θ _k,l=angle (LS _k,l* conj (LS _{k+1, l})), average is carried out to all phase differences and asks for: $\mathrm{\Δ\θ}=\underset{k}{\mathrm{\Σ}}\underset{l}{\mathrm{\Σ}}\mathrm{\Δ}{\mathrm{\θ}}_{k,l}/\mathrm{kl};$

In the present embodiment, suppose the channel impulse response LS that one of xth community sub-frame reference siganl position is corresponding _k,lfor the channel estimation in frequency domain result List_Id_Ls (x, k, l) of this xth community;

306C ', the channel impulse response LS corresponding to a sub-frame reference siganl of xth community _k,lcarry out time delay Processing for removing:

LS' _k,l=LS _k,l*exp(-j*△θ*k)

=(H _k,l*exp(j*θ _l+j*2*pi*k*dis/2048)+n _k,l)*exp(-j*△θ*k)

=H _k,l*exp(j*θ _l+j*2*pi*k*dis/2048-j*△θ*k)+n' _k,l；

=H _k,l*exp(j*θ _l)+n' _k,l

=A _k,l*h _k,l*exp(j*θ _l)+n' _k,l

The rough estimate evaluation RSRP of Received signal strength RSRP in 306D ', the corresponding Measurement bandwidth in calculating xth community _x1:

${\mathrm{RSRP}}_{x1}=|\underset{k}{\mathrm{\Σ}}\underset{l}{\mathrm{\Σ}}{{\mathrm{LS}}^{\′}}_{k,l}/\mathrm{kl}|=\underset{k}{\mathrm{\Σ}}\underset{l}{\mathrm{\Σ}}{A}_{k,l}/\mathrm{kl}+\underset{k}{\mathrm{\Σ}}\underset{l}{\mathrm{\Σ}}{n}_{k,l}^{\′}/\mathrm{kl}$

Wherein, A in above formula _k,lrepresent LS _k,lthe signal amplitude that l OFDM symbol reference signal in kth on frequency domain, time domain is corresponding, n' _k,lrepresent LS' _k,lthe noise that l reference signal position in kth on frequency domain, time domain is corresponding;

306E ', judge whether x is more than or equal to M, if so, perform step 307, otherwise perform step 306F ';

306F ', x=x+1, perform step 306B '.

Particularly, with reference to figure 5, in some execution modes of the present invention, above-mentioned steps 308 can specifically comprise:

308A, default y=1;

308B, the channel impulse response LS corresponding to each OFDM symbol reference signal position of y community _k,lcarry out zero padding or delete that afterbody redundant data transforms to N_FFT point length, obtain LS _{:, l}; Wherein, N_FFT is predetermined positive integer, and preferably, N_FFT can be some powers of 2, as 256 or 512 or 1024 or 2048 is equivalent;

If channel impulse response LS _k,llength be greater than N_FFT, then need to delete tail data, if be less than N_FFT, then can, in afterbody zero padding, make it reach N_FFT point length;

Equally, the channel impulse response LS that each OFDM symbol reference signal position of y community is corresponding is supposed _k,lfor the channel estimation in frequency domain result List_Id_Ls (y, k, l) of this y community;

308C, the LS corresponding to above-mentioned each OFDM symbol reference signal position _{:, l}carry out the conversion of N_FFT point quick Fourier: FFT_H (l :)=fft (LS _{:, l});

308D, calculate time domain channel impulse responding power value corresponding to each OFDM symbol reference signal position:

H_Power_Ofdm(l,:)=abs(FFT_H(l,:)).^2；

308E, the superposition of time domain channel impulse responding power value corresponding for each OFDM symbol reference signal position of above-mentioned y community correspondence is obtained the time domain channel impulse responding power array H_Power_ID of above-mentioned y community:

$H\_\mathrm{Power}\_\mathrm{ID}=\underset{l=1}{\overset{4}{\mathrm{\Σ}}}H\_\mathrm{Power}\_\mathrm{Ofdm}(l,:)$

308F, according to the first predetermined criterion to above-mentioned time domain channel impulse responding power array H_Power_ID process, obtain the smart estimated value of the RSRP of above-mentioned y community;

After the smart estimated value of RSRP obtaining y community, can using the measurement result of this smart estimated value as the RSRP of this community;

308G, judge whether y is more than or equal to C(or M), if so, perform step 309, otherwise perform step 308H;

308H, y=y+1, perform step 308B.

If y is more than or equal to C(or M), then illustrate that the essence of the RSRP having executed the selected community of C at the most is out estimated, next step 309 can be performed, otherwise the essence continuing to carry out next community RSRP is estimated.

Above-mentioned steps 308A ~ 308H describes mode that employing order performs carries out time domain estimation respectively method to the community of C at the most that RSRP in n-th group is maximum, certainly also can also can adopt the mode or other suitable mode that synchronously perform in each minizone, not do concrete restriction at this.

Wherein above-mentioned steps 308 is not limited to the above-mentioned implementation of above-mentioned 308A-308H, and in other execution modes of the present invention, above-mentioned steps 308 also can comprise:

308A ', default y=1;

308B ', the LS corresponding to above-mentioned each OFDM symbol reference signal position _k,lcarry out the DFT(Discrete Fourier Transform of corresponding length, discrete Fourier transform): DFT_H (k, l)=dft (LS _k,l);

The channel impulse response LS that each OFDM symbol reference signal position of y community is corresponding is supposed in the present embodiment _k,lfor the channel estimation in frequency domain result List_Id_Ls (y, k, l) of this y community;

Because discrete Fourier transform is also unrestricted to sample points, therefore without the need to carrying out zero padding or deleting that tail data transforms to the integer power length of 2;

308C ', calculate time domain channel impulse responding power value corresponding to each OFDM symbol reference signal position:

H_Power_Ofdm(k,l)=abs(DFT_H(k,l)).^2；

308D ', the superposition of time domain channel impulse responding power value corresponding for each OFDM symbol reference signal position of above-mentioned y community correspondence is obtained the time domain channel impulse responding power array H_Power_ID of above-mentioned y community:

$H\_\mathrm{Power}\_\mathrm{ID}=\underset{l=1}{\overset{4}{\mathrm{\Σ}}}H\_\mathrm{Power}\_\mathrm{Ofdm}(k,l)$

308E ', according to the first predetermined criterion to above-mentioned time domain channel impulse responding power array H_Power_ID process, obtain the smart estimated value of the RSRP of above-mentioned y community;

After the smart estimated value of RSRP obtaining y community, can using the measurement result of this smart estimated value as the RSRP of this community;

308F ', judge whether y is more than or equal to C(or M), if so, perform step 309, otherwise perform step 308G ';

308G ', y=y+1, perform step 308B '.

Above-mentioned steps 308A ' ~ 308G ' describes mode that employing order performs carries out time domain estimation respectively method to the community of C at the most that RSRP in n-th group is maximum, certainly also can also can adopt the mode or other suitable mode that synchronously perform in each minizone, not do concrete restriction at this.

Preferably, as shown in Figure 6, at above-mentioned steps 308G(or 308F ') before, the method also can comprise:

601, according to the second predetermined criterion to above-mentioned time domain channel impulse responding power array H_Power_ID process, obtain the noise power-value of the reference signal of above-mentioned y community;

602, by the noise power-value of the smart estimated value of the RSRP of y community divided by the reference signal of above-mentioned y community, the signal quality indication index of above-mentioned y community is obtained;

603, judge whether the signal quality indication index of above-mentioned y community is greater than predetermined threshold value, if be greater than, perform step 604, otherwise perform step 605;

604, using the RSRP measurement result of the smart estimated value of the RSRP of above-mentioned y community as above-mentioned y community; Perform step 308G(or 308F ');

605, the RSRP measurement result of above-mentioned y community is set to 0.

Signal quality indication index when y community is greater than predetermined threshold value, can think that this community is efficient cell, otherwise thinks that this community is invalid cell, its measurement result is set to 0.

Larger RSRP essence estimated value will be obtained for the invalid cell in the larger frequency of power during different-frequency measure, efficient cell measured value in effective frequency that even specific power is less also wants large, different-frequency measure may be affected report, therefore in step 601-605, first judge whether a community is efficient cell by quality indication index, and 0 operation is clearly carried out to the RSRP essence estimated value of invalid cell, so just make the efficient cell in effective frequency that this invalid cell RSRP essence estimated value specific power is less little, can guarantee that different-frequency measure reports more accurate.

In the present embodiment, the first criterion and the second criterion can have but be not limited to following two kinds of forms:

Form one:

Find out the maximum Pmax in the channel impulse response power array H_Power_ID of above-mentioned y community;

Using position corresponding for the element being less than Pmax/TH1 in above-mentioned channel impulse response power array H_Power_ID as noise path position, be more than or equal to this thresholding as signal footpath; TH1 is that default noise path selects thresholding, and the preferred span of TH1 can be 2 ~ 5;

Using the smart estimated value of the channel impulse response power sum of each signal path position as the RSRP of above-mentioned y community, using the noise power-value of the channel impulse response power sum of each noise path position as the reference signal of above-mentioned y community.

Form two:

Find out the maximum Pmax in the channel impulse response power array H_Power_ID of above-mentioned y community;

Using Pmax position and each TH2 position, left and right, Pmax position as signal path position, all the other positions are as noise path position; TH2 is that default noise path selects thresholding, and the preferred span of TH2 can be 1 ~ 7;

Using the smart estimated value of the channel impulse response power sum of each signal path position as the RSRP of above-mentioned y community, using the noise power-value of the channel impulse response power sum of each noise path position as the reference signal of above-mentioned y community.

Certainly, the choosing method of signal path position or noise path position is not limited to above-mentioned two kinds of forms, and those skilled in the art also can be set to other form according to actual conditions, do not do concrete restriction at this.

The method of the determination Reference Signal Received Power provided in the present embodiment has following beneficial effect:

First, after rationally being divided into groups in community to be measured in the present embodiment, identical reception data can be used with the community in group, open frequently when multiple cell not only can be avoided to measure to receive and drive, receive data sharing owing to existing between multiple cell simultaneously, process complexity can be effectively reduced, greatly improve simultaneously and measure efficiency.

Second, have employed in the present embodiment and can resist the Preliminary screening that larger synchronism deviation RSRP frequency domain rough estimate scheme carries out efficient cell, reduce subsequent treatment complexity, improve treatment effeciency simultaneously, then the community filtered out RSRP rough estimate is carried out RSRP time domain and is accurately estimated, can improve the precision of cell measurement.

3rd, the frequency domain estimation scheme can resisted compared with factor impacts such as the larger frequency deviations of long time delay is have employed in the present embodiment, the program eliminates the channel impulse response after the impacts such as time delay, frequency deviation, decline by structure, simultaneously corresponding to adjacent reference signal position channel correlation coefficient is defaulted as 1, therefore the effective impact solving various channel factor, thus only need the impact considering noise factor, finally greatly improve the measurement estimated performance of frequency domain estimation scheme.

4th, when carrying out different-frequency measure, if signal power corresponding to two frequency bins differs greatly, and comprise invalid cell in the measurement ID list that now larger frequency is corresponding.So the measured value of RSRP that calculates of this invalid cell is owing to being subject to noise and interdependence effects also can be very large, this measured value may the measured value of efficient cell corresponding to the less frequency of specific power also large.The signal quality indication index of the present embodiment to each community judges, can judge invalid cell, and carries out clear operation to the measured value of invalid cell, avoids high level to bring misoperation.

Embodiment three:

The invention provides a kind of system determining Reference Signal Received Power, can be used for the method performing embodiment one or two description, as shown in Figure 7, this system can comprise:

Grouping module 100, for according to predetermined rule of classification, is divided into N group by multiple microzonation to be measured; N be more than or equal to 1 positive integer, above-mentioned predetermined rule of classification is the difference of intercell synchronous positional information is less than the little of predetermined threshold to divide into one group;

Processing module 200, for adopting first method synchronously or sequentially to process each group, to determine the Reference Signal Received Power of community to be measured in above-mentioned each group; Wherein first method can the description of reference implementation one or two, does not repeat them here.

Particularly, the mode performed when processing module 200 employing order processes each group of community to be measured, and with reference to figure 8, processing module 200 can comprise:

Preset unit 210, for n is set to 1;

Receive processing unit 220, be connected with default unit 210, time-domain signal reception is carried out for choosing the first community from n-th group, and obtain the frequency domain data of above-mentioned first community after carrying out fast Fourier transform process to the time-domain signal received, and using frequency domain data shared as above-mentioned n-th Zu Ge community for the frequency domain data of above-mentioned first community;

Suppose that above-mentioned n-th group comprises M community altogether, above-mentioned first community can be any one community of n-th group, can certainly choosing, being positioned at the community of this group intermediate value as chosen sync bit information according to certain rule;

LS estimation unit 230, being connected with reception processing unit 220, for using above-mentioned shared frequency domain data to carry out LS estimation respectively to above-mentioned n-th Zu Ge community, obtaining the channel estimation in frequency domain result List_Id_Ls (m of above-mentioned first Zu Ge community, k, l); Wherein, 1≤m≤M, 1≤k≤2NRB, 1≤l≤4, NRB represents the number of Physical Resource Block corresponding in Measurement bandwidth;

First judging unit 240, is connected with LS estimation unit 230, for judging whether the community number in above-mentioned n-th group is greater than predetermined value C;

The wherein concrete numerical value of predetermined value C, can set based on the disposal ability during existing network environment and associated terminal, and it is larger that C value sets, and it is stronger to the requirement of device disposal ability, and C value should be greater than 1, as set C=3;

Frequency domain estimation unit 250, be connected with the first judging unit 240, for when the judged result of the first judging unit 240 is for being, above-mentioned channel estimation in frequency domain result according to above-mentioned n-th Zu Zhongge community carries out the rough estimate of frequency domain measurement value, obtains the rough estimate evaluation of the Reference Signal Received Power RSRP of above-mentioned first Zu Zhongge community;

Screening unit 260, is connected with frequency domain estimation unit 250, for the rough estimate evaluation of the RSRP of the n-th Zu Zhongge community calculated according to frequency domain estimation unit 250, filters out the maximum C of a RSRP community;

Particularly, can sort to each community according to RSRP rough estimate evaluation order from big to small, choose a front C community;

Time domain estimation unit 270, be connected with screening unit 260, time domain estimation is carried out respectively at the most C the community maximum to RSRP in n-th group, obtains the smart estimated value of the RSRP of the above-mentioned community of C at the most in above-mentioned n-th group respectively;

Second judging unit 280, is connected with time domain estimation unit 270, for judging whether n is more than or equal to N;

Cycling element 290, with the second judging unit 280 with receive processing unit 220 and be connected, for when the judged result of the second judging unit 280 is for being, the calculation process of the module that ends process 200; And for when the judged result of the second judging unit 280 is no, make n=n+1, and the new value of n is sent to reception processing unit 220, thus make reception processing unit 220 start the relevant treatment next being organized to community to be measured.

The above-described mode being processing module 200 employing order performs processes each group of community to be measured, and certainly, processing module 200 can also adopt synchronous execution or other suitable modes to process each group of community to be measured, does not do concrete restriction at this.

Particularly, with reference to figure 9, in certain embodiments of the present invention, when the mode that employing order performs calculates the rough estimate evaluation of the Reference Signal Received Power RSRP of the n-th Zu Zhongge community, frequency domain estimation unit 250 can specifically comprise:

First presets subelement 250A, for default x=1;

First Processing for removing subelement 250B, is connected, for the channel impulse response LS that a sub-frame reference siganl to xth community is corresponding with the first default subelement 250A _k,lcarry out time delay and frequency deviation Processing for removing: LS' _k,l=LS _k,l* conj (LS _{k+1, l}); Wherein * represents dot product;

In the present embodiment, suppose the channel impulse response LS that one of xth community sub-frame reference siganl position is corresponding _k,lfor the channel estimation in frequency domain result List_Id_Ls (x, k, l) of this xth community;

In the present embodiment, coefficient correlation equivalence corresponding for channel impulse response corresponding for neighboring reference signal location is set to 1, then above-mentioned LS' _k,lcan abbreviation be:

LS' _k,l=LS _k,l*conj(LS _k+1,l)

=(H _k,l*exp(θ _l+j*2*pi*k*dis/2048)+n _k,l)

*conj(H _k+1,l*exp(θ _l+j*2*pi*(k+6)*dis/2048)+n _k+1,l)

=A _k,l*A _k+1,l*h _k,l*h _k+1,l*exp(j*2*pi*6*dis/2048)+n _k,l'

=A _k,l*A _k+1,l*exp(j*2*pi*6*dis/2048)+n _k,l'

=A _k,l ^{^2}*exp(j*2*pi*6*dis/2048)+n _k,l'

First rough estimate subelement 250C, is connected with the first Processing for removing subelement 250B, for calculating the rough estimate evaluation RSRP of Received signal strength RSRP in the corresponding Measurement bandwidth in xth community _x1:

${\mathrm{RSRP}}_{x1}=|\underset{k}{\mathrm{\Σ}}\underset{l}{\mathrm{\Σ}}{{\mathrm{LS}}^{\′}}_{k,l}/\mathrm{kl}|=\underset{k}{\mathrm{\Σ}}\underset{l}{\mathrm{\Σ}}{A}_{k,l}^{^2}/\mathrm{kl}+\underset{k}{\mathrm{\Σ}}\underset{l}{\mathrm{\Σ}}{n}_{k,l}^{\′}/\mathrm{kl}$

Wherein, in above formula, dis is time delay, A _k,lrepresent LS _k,lthe signal amplitude that l OFDM symbol reference signal in kth on frequency domain, time domain is corresponding, θ _lrepresent due to the first phase that frequency deviation causes in each OFDM symbol, n _k,lrepresent LS _k,lthe noise that l reference signal position in kth on frequency domain, time domain is corresponding, n' _k,lrepresent LS' _k,lthe noise that l reference signal position in kth on frequency domain, time domain is corresponding, H _k,lrepresent LS _k,lideal communication channel impulse response corresponding to l reference signal position in the kth on frequency domain, time domain (do not comprise time delay and frequency deviation factor affects), h _k,lrepresent LS _k,lthe channel impulse response phase information that l reference signal position in kth on frequency domain, time domain is corresponding;

First judgment sub-unit 250D, is connected with the first rough estimate subelement 250C, for judging whether x is more than or equal to the sum M of n-th group of small area;

First circulation subelement 250E, be connected with the first judgment sub-unit 250D and the first Processing for removing subelement 250B, for when the judged result of the first judgment sub-unit 250D is for being, terminate the calculating to the rough estimate evaluation of n-th group of community RSRP to be measured, and for when the judged result of the first judgment sub-unit 250D is no, make x=x+1, and the new value of x is sent to the first Processing for removing subelement 250B, start to make frequency domain estimation unit 250 to carry out relevant treatment to next community.

The mode above describing the execution of frequency domain estimation unit 250 employing order calculates the rough estimate evaluation of the Reference Signal Received Power RSRP of the n-th Zu Zhongge community, certainly can also adopt synchronous execution or other suitable modes for each community, not do concrete restriction at this.

With reference to Figure 10, in other execution modes of the present invention, when the mode that employing order performs calculates the rough estimate evaluation of the Reference Signal Received Power RSRP of the n-th Zu Zhongge community, frequency domain estimation unit 250 also can specifically comprise:

Second presets subelement 250A ', for default x=1;

Average subelement 250B ', is connected, for obtaining channel impulse response LS corresponding to neighboring reference signal in each OFDM symbol to xth community with the second default subelement 250A ' _k,lphase difference △ θ _k,l=angle (LS _k,l* conj (LS _{k+1, l})), average is carried out to all phase differences and asks for:

Second Processing for removing subelement 250C ', subelement 250B ' is connected with averaging, for the channel impulse response LS that a sub-frame reference siganl to xth community is corresponding _k,lcarry out time delay Processing for removing: LS' _k,l=LS _k,l* exp (-j* △ θ * k);

Second rough estimate subelement 250D ', is connected with the second Processing for removing subelement 250C ', for calculating the rough estimate evaluation RSRP of Received signal strength RSRP in the corresponding Measurement bandwidth in xth community _x1:

${\mathrm{RSRP}}_{x1}=|\underset{k}{\mathrm{\Σ}}\underset{l}{\mathrm{\Σ}}{{\mathrm{LS}}^{\′}}_{k,l}/\mathrm{kl}|=\underset{k}{\mathrm{\Σ}}\underset{l}{\mathrm{\Σ}}{A}_{k,l}^{^2}/\mathrm{kl}+\underset{k}{\mathrm{\Σ}}\underset{l}{\mathrm{\Σ}}{n}_{k,l}^{\′}/\mathrm{kl}$

In above formula, A _k,lrepresent LS _k,lthe signal amplitude that l OFDM symbol reference signal in kth on frequency domain, time domain is corresponding, n' _k,lrepresent LS' _k,lthe noise that l reference signal position in kth on frequency domain, time domain is corresponding;

Second judgment sub-unit 250E ', is connected with the second rough estimate subelement 250D ', for judging whether x is more than or equal to M;

Second circulation subelement 250F ', be connected with the second judgment sub-unit 250E ' and the subelement 250B ' that averages, for when the judged result of the second judgment sub-unit 250E ' is for being, terminate the calculating to the rough estimate evaluation of n-th group of community RSRP to be measured, and for when the judged result of the second judgment sub-unit 250E ' is no, make x=x+1, and the new value of x is sent to the subelement 250B ' that averages, start to make frequency domain estimation unit 250 to carry out relevant treatment to next community.

Particularly, with reference to Figure 11, in certain embodiments of the present invention, when the community of C at the most that RSRP during the mode that time domain estimation unit 270 employing order performs is to n-th group is maximum carries out time domain estimation respectively, time domain estimation unit 270 can specifically comprise:

3rd presets subelement 270A, can be used for default y=1;

Length varitron unit 270B, is connected with the 3rd default subelement 270A, can be used for the channel impulse response LS corresponding to each OFDM symbol reference signal position of y community _k,lcarry out zero padding or delete that afterbody redundant data transforms to N_FFT point length, obtain LS _{:, l}; Wherein, N_FFT is predetermined positive integer, and preferably, N_FFT can be some powers of 2, as 256 or 512 or 1024 or 2048 is equivalent;

If channel impulse response LS _k,llength be greater than N_FFT, then need to delete tail data, if be less than N_FFT, then need in afterbody zero padding, make it reach N_FFT point length;

Equally, in the present embodiment, suppose the channel impulse response LS that each OFDM symbol reference signal position of y community is corresponding _k,lfor the channel estimation in frequency domain result List_Id_Ls (y, k, l) of this y community;

First Fourier transform subelement 270C, is connected with length varitron unit 270B, can be used for and the LS corresponding to above-mentioned each OFDM symbol reference signal position _{:, l}carry out the conversion of N_FFT point quick Fourier: FFT_H (l :)=fft (LS _{:, l});

First power calculation subelement 270D, is connected with the first Fourier transform subelement 270C, can be used for calculating time domain channel impulse responding power value corresponding to each OFDM symbol reference signal position:

H_Power_Ofdm(l,:)=abs(FFT_H(l,:)).^2；

First superposition calculation subelement 270E, be connected with the first power calculation subelement 270D, for the superposition of time domain channel impulse responding power value corresponding for each OFDM symbol reference signal position of above-mentioned y community correspondence being obtained the time domain channel impulse responding power array H_Power_ID of above-mentioned y community:

$H\_\mathrm{Power}\_\mathrm{ID}=\underset{l=1}{\overset{4}{\mathrm{\Σ}}}H\_\mathrm{Power}\_\mathrm{Ofdm}(l,:)$

First smart estimator unit 270F, is connected with the first superposition calculation subelement 270E, to can be used for according to the first predetermined criterion, to above-mentioned time domain channel impulse responding power array H_Power_ID process, obtaining the smart estimated value of the RSRP of above-mentioned y community;

After the smart estimated value of RSRP obtaining y community, can using the measurement result of this smart estimated value as the RSRP of this community;

3rd judgment sub-unit 270G, is connected with the first smart estimator unit 270F, for judging whether y is more than or equal to C(or M);

3rd circulation subelement 207H, be connected with the 3rd judgment sub-unit 270G and length varitron unit 270B, can be used for when the judged result of the 3rd judgment sub-unit 270G is for being, terminate the process of time domain estimation unit 270 to n-th group of community, and can be used for when the judged result of the 3rd judgment sub-unit 270G is no, make y=y+1, and the new value of y is sent to length varitron unit 270B, to make time domain estimation unit 270, relevant treatment is carried out to next community.

If y is more than or equal to C(or M), then illustrate that the essence of the RSRP having executed the selected community of C at the most is out estimated, the time domain that can terminate n-th group estimates relevant treatment, otherwise the essence continuing to carry out next community RSRP is estimated.

With reference to Figure 12, in other execution modes of the present invention, when the community of C at the most that RSRP during the mode that time domain estimation unit 270 employing order performs is to n-th group is maximum carries out time domain estimation respectively, time domain estimation unit 270 also can specifically comprise:

4th presets subelement 270A ', for default y=1;

Second Fourier transform subelement 270B ', is connected, for the LS corresponding to above-mentioned each OFDM symbol reference signal position with the 4th default subelement 270A ' _k,lcarry out the DFT(discrete Fourier transform of corresponding length): DFT_H (k, l)=dft (LS _k,l);

Wherein, the channel impulse response LS that each OFDM symbol reference signal position of y community is corresponding is supposed in the present embodiment _k,lfor the channel estimation in frequency domain result List_Id_Ls (y, k, l) of this y community;

Because discrete Fourier transform is also unrestricted to sample points, therefore without the need to carrying out zero padding or deleting that tail data transforms to the integer power length of 2;

Second power calculation subelement 270C ', is connected with the second Fourier transform subelement 270B ', for calculating time domain channel impulse responding power value corresponding to each OFDM symbol reference signal position:

H_Power_Ofdm(k,l)=abs(DFT_H(k,l)).^2；

Second superposition calculation subelement 270D ', be connected with the second power calculation subelement 270C ', for the superposition of time domain channel impulse responding power value corresponding for each OFDM symbol reference signal position of above-mentioned y community correspondence being obtained the time domain channel impulse responding power array H_Power_ID of above-mentioned y community:

$H\_\mathrm{Power}\_\mathrm{ID}=\underset{l=1}{\overset{4}{\mathrm{\Σ}}}H\_\mathrm{Power}\_\mathrm{Ofdm}(k,l)$

Second smart estimator unit 270E ', is connected with the second superposition calculation subelement 270D ', for according to the first predetermined criterion to above-mentioned time domain channel impulse responding power array H_Power_ID process, obtain the smart estimated value of the RSRP of above-mentioned y community;

After the smart estimated value of RSRP obtaining y community, can using the measurement result of this smart estimated value as the RSRP of this community;

4th judgment sub-unit 270F ', is connected with the second smart estimator unit 270E ', for judging whether y is more than or equal to C(or M);

4th circulation subelement 270G ', be connected with the 4th judgment sub-unit 270F ' and the second Fourier transform subelement 270B ', for when the judged result of the 4th judgment sub-unit 270F ' is for being, terminate the process of time domain estimation unit 270 to n-th group of community, and for when the judged result of the 4th judgment sub-unit 270F ' is no, make y=y+1, and the new value of y is sent to the second Fourier transform subelement 270B ', to make time domain estimation unit 270, relevant treatment is carried out to next community.

Be described above the mode that performs when time domain estimation unit 270 employing order to n-th group in the maximum community of C at the most of RSRP carry out the structure of time domain estimation respectively, certain time domain estimation unit 270 can also adopt the mode of synchronous execution or other suitable mode to process to each minizone, does not do concrete restriction at this.

Preferably, time domain estimation unit 270 also can comprise:

Noise power calculation subelement, with the first superposition calculation subelement 270E(or the second superposition calculation subelement 270D ') be connected, for according to the second predetermined criterion to above-mentioned time domain channel impulse responding power array H_Power_ID process, obtain the noise power-value of the reference signal of above-mentioned y community;

Signal quality indication index computation subunit, with the first smart estimator unit 270F(or the second smart estimator unit 270E ') and noise power calculation subelement be connected, for the smart estimated value of the RSRP by y community divided by the noise power-value of the reference signal of above-mentioned y community, obtain the signal quality indication index of above-mentioned y community;

3rd judgment sub-unit, is connected with signal quality indication index computation subunit, can be used for judging whether the signal quality indication index of above-mentioned y community is greater than predetermined threshold value;

Measurement result determining unit, with the 3rd judgment sub-unit 270G(or the 4th judgment sub-unit 270F ') be connected, can be used for as the 3rd judgment sub-unit 270G(or the 4th judgment sub-unit 270F ') result for being time, using the RSRP measurement result of the smart estimated value of the RSRP of above-mentioned y community as above-mentioned y community, and can be used for as the 3rd judgment sub-unit 270G(or the 4th judgment sub-unit 270F ') result when being no, the RSRP measurement result of above-mentioned y community is set to 0.

In the present embodiment, the first criterion and the second criterion can have following two kinds of forms:

Form one:

Find out the maximum Pmax in the channel impulse response power array H_Power_ID of above-mentioned y community;

Using position corresponding for the element being less than Pmax/TH1 in above-mentioned channel impulse response power array H_Power_ID as noise path position, be more than or equal to this thresholding as signal footpath; TH1 is that default noise path selects thresholding, and the preferred span of TH1 can be 2 ~ 5;

Using the smart estimated value of the channel impulse response power sum of each signal path position as the RSRP of above-mentioned y community, using the noise power-value of the channel impulse response power sum of each noise path position as the reference signal of above-mentioned y community.

Form two:

Find out the maximum Pmax in the channel impulse response power array H_Power_ID of above-mentioned y community;

Using Pmax position and each TH2 position, left and right, Pmax position as signal path position, all the other positions are as noise path position; TH2 is that default noise path selects thresholding, and the preferred span of TH2 can be 1 ~ 7;

Using the smart estimated value of the channel impulse response power sum of each signal path position as the RSRP of above-mentioned y community, using the noise power-value of the channel impulse response power sum of each noise path position as the reference signal of above-mentioned y community.

Certainly, the choosing method of signal path position or noise path position is not limited to above-mentioned two kinds of forms, and those skilled in the art also can be set to other form according to actual conditions, do not do concrete restriction at this.

The system of the determination Reference Signal Received Power provided in the present embodiment has following beneficial effect:

First, after rationally being divided into groups in community to be measured, identical reception data can be used with the community in group, open frequently when multiple cell not only can be avoided to measure to receive and drive, receive data sharing owing to existing between multiple cell simultaneously, can effectively reduce process complexity, greatly improve simultaneously and measure efficiency.

Second, have employed in the present embodiment and can resist the Preliminary screening that larger synchronism deviation RSRP frequency domain rough estimate scheme carries out efficient cell, reduce subsequent treatment complexity, improve treatment effeciency simultaneously, then the community filtered out RSRP rough estimate is carried out RSRP time domain and is accurately estimated, can improve the precision of cell measurement.

3rd, in the present embodiment, have employed the frequency domain estimation scheme can resisted compared with factor impacts such as the larger frequency deviations of long time delay, the program eliminates the channel impulse response after the impacts such as time delay, frequency deviation, decline by structure, simultaneously corresponding to adjacent reference signal position channel correlation coefficient is defaulted as 1, therefore the effective impact solving various channel factor, thus only need the impact considering noise factor, finally greatly improve the measurement estimated performance of frequency domain estimation scheme.

Four, when carrying out different-frequency measure, if signal power corresponding to two frequency bins differs greatly, and invalid cell is comprised in the measurement ID list that now larger frequency is corresponding.So the measured value of RSRP that calculates of this invalid cell is owing to being subject to noise and interdependence effects also can be very large, this measured value may the measured value of efficient cell corresponding to the less frequency of specific power also large.The signal quality indication index of the present embodiment to each community judges, can judge invalid cell, and carries out clear operation to the measured value of invalid cell, avoids high level to bring misoperation.

Embodiment four:

The present invention also provides a kind of mobile terminal, and this mobile terminal comprises the system of the determination Reference Signal Received Power as described in embodiment three, and particular content can the description of reference implementation three, does not repeat them here.

Each embodiment is all based on same inventive concept above, and each embodiment describes and emphasizes particularly on different fields, and describes not detailed part in separate embodiment, can with reference to the description in other embodiment.

One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is that the hardware that can carry out instruction relevant by program has come, this program can be stored in a computer-readable recording medium, storage medium can comprise: flash disk, read-only memory (Read-Only Memory, ROM), random access device (Random Access Memory, RAM), disk or CD etc.

Be described in detail the method for the determination Reference Signal Received Power that the embodiment of the present invention provides, system and mobile terminal above, this description should not be construed as limitation of the present invention.

Claims (8)

1. determine a method for Reference Signal Received Power, it is characterized in that, comprising:

According to predetermined rule of classification, multiple microzonation to be measured is divided into N group; N be more than or equal to 1 positive integer, described predetermined rule of classification is the difference of intercell synchronous positional information is less than the little of predetermined threshold to divide into one group;

First method is adopted synchronously or sequentially to process each group, to determine the Reference Signal Received Power of community to be measured in described each group; Wherein said first method comprises:

From first group, choose the first community carry out time-domain signal reception, the frequency domain data of described first community is obtained after fast Fourier transform process is carried out to the time-domain signal received, and using frequency domain data shared as described first Zu Ge community for the frequency domain data of described first community; Described first group is in described N group any one group, and described first group comprises M community, and described first community is any one community in described first group;

Use described shared frequency domain data to carry out least square LS estimation respectively to described first Zu Ge community, obtain the channel estimation in frequency domain result List_Id_Ls (m, k, l) of described first Zu Ge community; Wherein, 1≤m≤M, 1≤k≤2NRB, 1≤l≤4, NRB represents the number of Physical Resource Block corresponding in Measurement bandwidth;

Judge whether the community number in described first group is greater than predetermined value, if, described channel estimation in frequency domain result according to described first Zu Zhongge community carries out the rough estimate of frequency domain measurement value, obtains the rough estimate evaluation of the Reference Signal Received Power RSRP of described first Zu Zhongge community;

According to the rough estimate evaluation of the RSRP of described first Zu Zhongge community, filter out the community of C at the most that RSRP is maximum; C is predetermined positive integer;

Time domain estimation is carried out respectively at the most C the community larger to RSRP in described first group, obtains the smart estimated value of the RSRP of C community at the most described in described first group respectively.

2. method according to claim 1, is characterized in that, described method also comprises:

If the community number in described first group is less than or equal to predetermined value, perform the step that described at the most C the community larger to RSRP in described first group carries out time domain estimation respectively.

3. method according to claim 1, it is characterized in that, the described described channel estimation in frequency domain result according to described first Zu Zhongge community carries out the rough estimate of frequency domain measurement value, and the step obtaining the rough estimate evaluation of the Reference Signal Received Power RSRP of described first Zu Zhongge community specifically comprises:

Adopt second method synchronously or sequentially to process described first Zu Zhongge community, wherein second method comprises:

Suppose the channel impulse response LS that a sub-frame reference siganl of the second community is corresponding _k,lfor the channel estimation in frequency domain result List_Id_Ls (m, k, l) of described second community; Described second community is any one community in described first group;

The channel impulse response LS corresponding to a sub-frame reference siganl of the second community _k,lcarry out time delay and frequency deviation Processing for removing:

LS' _k,l=LS _k,l*conj(LS _k+1,l)

=(H _k,l*exp(θ _l+j*2*pi*k*dis/2048)+n _k,l)

*conj(H _k+1,l*exp(θ _l+j*2*pi*(k+6)*dis/2048)+n _k+1,l)

=A _k,l*A _k+1,l*h _k,l*h _k+1,l*exp(j*2*pi*6*dis/2048)+n _k,l'

=A _k,l*A _k+1,l*exp(j*2*pi*6*dis/2048)+n _k,l'

=A _k,l ^{^2}*exp(j*2*pi*6*dis/2048)+n _k,l'

Calculate the rough estimate evaluation RSRP of Received signal strength RSRP in corresponding Measurement bandwidth ₁:

${\mathrm{RSRP}}_1=|\underset{k}{\mathrm{\Σ}}\underset{l}{\mathrm{\Σ}}{{\mathrm{LS}}^{\′}}_{k,l}/\mathrm{kl}|=\underset{k}{\mathrm{\Σ}}\underset{l}{\mathrm{\Σ}}{A}_{k,l}^{^2}/\mathrm{kl}+\underset{k}{\mathrm{\Σ}}\underset{l}{\mathrm{\Σ}}{n}_{k,l}^{\′}/\mathrm{kl}$

Wherein, in above formula, dis is time delay, A _k,lrepresent LS _k,lthe signal amplitude that l OFDM symbol reference signal in kth on frequency domain, time domain is corresponding, θ _lrepresent due to the first phase that frequency deviation causes in each OFDM symbol, n _k,lrepresent LS _k,lthe noise that l reference signal position in kth on frequency domain, time domain is corresponding, n' _k,lrepresent LS' _k,lthe noise that l reference signal position in kth on frequency domain, time domain is corresponding, H _k,lrepresent LS _k,lthe ideal communication channel impulse response that l reference signal position in kth on frequency domain, time domain is corresponding, h _k,lrepresent LS _k,lthe channel impulse response phase information that l reference signal position in kth on frequency domain, time domain is corresponding.

4. the method according to any one of claim 1-3, it is characterized in that, time domain estimation is carried out respectively in described at the most C the community larger to RSRP in described first group, obtains the step of the accurate estimated result of the RSRP of C community at the most described in described first group respectively, specifically comprises:

Adopt Third Way synchronously or sequentially to process described C at the most Zhong Ge community, community, wherein Third Way comprises:

Suppose the channel impulse response LS that a sub-frame reference siganl of the 3rd community is corresponding _k,lfor the channel estimation in frequency domain result List_Id_Ls (m, k, l) of described 3rd community; Described 3rd community for described in any one community at the most in C community;

The channel impulse response LS corresponding to each OFDM symbol reference signal position of the 3rd community _k,lcarry out zero padding or delete that afterbody redundant data transforms to N_FFT point length, obtain LS _{:, l}; Wherein, N_FFT is predetermined positive integer;

To described LS _{:, l}carry out the conversion of N_FFT point quick Fourier: FFT_H (l :)=fft (LS _{:, l});

Calculate time domain channel impulse responding power value:

H_Power_Ofdm(l,:)=abs(FFT_H(l,:)).^2；

The superposition of the time domain channel impulse responding power value of each OFDM symbol of described 3rd community correspondence is obtained time domain channel impulse responding power array H_Power_ID:

$H\_\mathrm{Power}\_\mathrm{ID}=\underset{l=1}{\overset{4}{\mathrm{\Σ}}}H\_\mathrm{Power}\_\mathrm{Ofdm}(l,:)$

According to the first predetermined criterion to described time domain channel impulse responding power array H_Power_ID process, obtain the smart estimated value of the RSRP of described 3rd community.

5. method according to claim 4, is characterized in that, described method also comprises:

According to the second predetermined criterion to described time domain channel impulse responding power array H_Power_ID process, obtain the noise power-value of the reference signal of described 3rd community;

By the noise power-value of the smart estimated value of the RSRP of described 3rd community divided by the reference signal of described 3rd community, obtain the signal quality indication index of described 3rd community;

Judge whether the signal quality indication index of described 3rd community is greater than predetermined threshold value, if be greater than, using the RSRP measurement result of the smart estimated value of the RSRP of described 3rd community as described 3rd community, otherwise the RSRP measurement result of described 3rd community is set to 0.

6. method according to claim 5, is characterized in that, described first criterion and described second criterion are:

Find out the maximum Pmax in the channel impulse response power array H_Power_ID of described 3rd community;

Using position corresponding for the element being less than Pmax/TH1 in described channel impulse response power array H_Power_ID as noise path position, be more than or equal to this thresholding as signal footpath; Or using Pmax position and each TH2 position, left and right, Pmax position as signal path position, all the other positions are as noise path position; Described TH1 or TH2 is that default noise path selects thresholding;

Using the smart estimated value of the channel impulse response power sum of each signal path position as the RSRP of described 3rd community, using the noise power-value of the channel impulse response power sum of each noise path position as the reference signal of described 3rd community.

7. determine a system for Reference Signal Received Power, it is characterized in that, described system comprises:

Grouping module, for according to predetermined rule of classification, is divided into N group by multiple microzonation to be measured; N be more than or equal to 1 positive integer, described predetermined rule of classification is the difference of intercell synchronous positional information is less than the little of predetermined threshold to divide into one group;

Processing module, for adopting first method synchronously or sequentially to process each group, to determine the Reference Signal Received Power of community to be measured in described each group; Wherein said first method comprises:

From first group, choose the first community carry out time-domain signal reception, the frequency domain data of described first community is obtained after fast Fourier transform process is carried out to the time-domain signal received, and using frequency domain data shared as described first Zu Ge community for the frequency domain data of described first community; Described first group is in described N group any one group, and described first group comprises M community, and described first community is any one community in described first group;

Use described shared frequency domain data to carry out least square LS estimation respectively to described first Zu Ge community, obtain the channel estimation in frequency domain result List_Id_Ls (m, k, l) of described first Zu Ge community; Wherein, 1≤m≤M, 1≤k≤2NRB, 1≤l≤4, NRB represents the number of Physical Resource Block corresponding in Measurement bandwidth;

Judge whether the community number in described first group is greater than predetermined value, if, described channel estimation in frequency domain result according to described first Zu Zhongge community carries out the rough estimate of frequency domain measurement value, obtains the rough estimate evaluation of the Reference Signal Received Power RSRP of described first Zu Zhongge community;

According to the rough estimate evaluation of the RSRP of described first Zu Zhongge community, filter out the community of C at the most that RSRP is maximum; C is predetermined positive integer;

Time domain estimation is carried out respectively at the most C the community larger to RSRP in described first group, obtains the accurate estimated result of the RSRP of C community at the most described in described first group respectively.

8. a mobile terminal, is characterized in that, described mobile terminal comprises the system determining Reference Signal Received Power as claimed in claim 7.