CN107204817A - A kind of interference detection method and terminal - Google Patents

Abstract

The invention provides a kind of interference detection method and terminal, it is related to communication technical field.The interference detection method of the present invention includes：Determine the first interfered cell of terminal current service cell；Obtain Physical Downlink Shared Channel PDSCH data power and public reference signal CRS pilot power of first interfered cell on the Physical Resource Block PRB shared by the terminal current service cell；According to the PDSCH data powers and the CRS pilot powers, the first power assignment value of first interfered cell is obtained；According to first power assignment value, determine to whether there is the interference of first interfered cell on the PRB.The solution of the present invention, the accurate judgement to area interference is realized on the basis of PRB, Interference Detection accuracy is improved.

Description

A kind of interference detection method and terminal

Technical field

The present invention relates to communication technical field, more particularly to a kind of interference detection method and terminal.

Background technology

Introduced in LTE-A (Long Term Evolution-Advanced, i.e. LTE evolution) Rel-12 systems NAICS (Network Assisted Interference Cancellation and Suppression, network assistance it is dry Suppression is disturbed with deleting) technology, network side issues the related higher layer signalling messages of NAICS, and interference of the UE in high-level signaling is small The partial information in area and the blind check to itself information of adjacent cells, the information to this cell are detected so that echo signal can Good performance is obtained, so that the throughput of system under lifting interference scene.However, complete and accurate interfered cell information Issue, on the one hand can limit flexibility of the base station side to the transmitting and scheduling of interfered cell, on the other hand, complete accurate information Expense is excessive, it is difficult to accomplish that perfect information is issued.Therefore, UE also needs to carry out partial dynamic parameter blind check to do The judgement disturbed.

But in existing scheme, the scheme of set of system is not small for obtaining current service according to the blind check of terminal It whether there is the interference of interfered cell on Physical Resource Block under area shared by the terminal, the accurate judgement to interference is brought not Just.

The content of the invention

The technical problem to be solved in the present invention is to provide a kind of interference detection method and terminal, to solve existing technology Scheme can not obtain whether there is on the Physical Resource Block under current service cell shared by the terminal according to the blind check of terminal The interference of interfered cell, it is impossible to the problem of accurately determining whether to have area interference.

In order to solve the above-mentioned technical problem, the embodiment of the present invention provides a kind of interference detection method, including：

Determine the first interfered cell of terminal current service cell；

Obtain thing of first interfered cell on the Physical Resource Block PRB shared by the terminal current service cell Manage DSCH Downlink Shared Channel PDSCH data powers and public reference signal CRS pilot powers；

According to the PDSCH data powers and the CRS pilot powers, the first work(of first interfered cell is obtained Rate apportioning cost；

According to first power assignment value, determine to whether there is the interference of first interfered cell on the PRB.

Further, it is described to obtain first interfered cell in the physics money shared by the terminal current service cell The step of Physical Downlink Shared Channel PDSCH data powers on source block PRB and public reference signal CRS pilot powers, wraps Include：

CRS pilot frequency sequence and first frequency-domain received signal of first interfered cell on PRB are obtained respectively；

According to the CRS pilot frequency sequences and first frequency-domain received signal, first interfered cell is believed Road is estimated, obtains the first channel estimation results；

According to first channel estimation results, the CRS pilot frequency sequences and first frequency-domain received signal, obtain The PDSCH data powers of first interfered cell；

According to first channel estimation results, the CRS pilot powers of first interfered cell are obtained.

Further, it is described according to first channel estimation results, the CRS pilot frequency sequences and first frequency domain The step of receiving signal, the PDSCH data powers of acquisition first interfered cell includes：

According to first channel estimation results, the CRS pilot frequency sequences and first frequency-domain received signal, obtain The interference covariance matrix of first interfered cell；

According to first frequency-domain received signal, the correlation matrix of first frequency-domain received signal is calculated；

According to the correlation matrix and the interference covariance matrix, the PDSCH numbers of first interfered cell are obtained According to power.

Further, it is described according to first channel estimation results, the CRS pilot frequency sequences and first frequency domain Signal is received, is specially the step of the interference covariance matrix for obtaining first interfered cell：

According to formula：

Calculate the interference covariance matrix of first interfered cell；

Wherein, R_nnIt is that dimension is N_RX×N_RXMatrix, represent the first interfered cell interference covariance matrix；N_{CRS_RE}Table Show the number of CRS resource units in a PRB；It is that dimension is N_RX×N_apMatrix, represent the under current PRB N on k CRS resource unit_RXIndividual reception antenna, N_apThe frequency of CRS parts in first frequency-domain received signal of individual antenna port Domain receives signal；It is that dimension is N_RX×N_apMatrix, represent on k-th of CRS resource unit under current PRB N_RXIndividual reception antenna, N_apFirst channel estimation results of individual antenna port；It is that dimension is N_ap× 1 vector, is represented N on k-th of CRS resource unit under current PRB_apThe CRS pilot frequency sequences of individual antenna port；It is that dimension is N_RX×N_apMatrix, () represent willEvery row element withEvery row element be multiplied；(·)^HRepresent to matrix Or vector seeks conjugate transposition.

Further, it is described according to first frequency-domain received signal, calculate the correlation of first frequency-domain received signal The step of matrix is specially：

According to formula：Calculate the Correlation Moment of first frequency-domain received signal Battle array；

Wherein, R_yyFor a N_RX×N_RXMatrix, represent the correlation matrix of first frequency-domain received signal；It is Dimension is N_RX× 1 matrix, represents the reception signal on k-th of data resource element of the first frequency-domain received signal under current PRB； N_REFor the number of the data resource element under current PRB；* representing matrix multiplication.

Further, it is described according to the correlation matrix and the interference covariance matrix, obtain first interference The step of PDSCH data powers of cell is specially：

According to formula：P1=Trace (R_yy-R_nn) calculate the PDSCH data powers for obtaining first interfered cell；

Wherein, P1 represents the PDSCH data powers of the first interfered cell；Trace () represents to seek matrix diagonals line element And function.

Further, it is described according to first channel estimation results, obtain the CRS pilot tone work(of first interfered cell The step of rate, includes：

According to first channel estimation results, the autocorrelation matrix of the channel estimation of first interfered cell is obtained；

According to the autocorrelation matrix, the CRS pilot powers of first interfered cell are obtained.

Further, it is described according to first channel estimation results, obtain the channel estimation of first interfered cell Autocorrelation matrix the step of be specially：

According to formula：Calculating obtains first interfered cell Channel estimation autocorrelation matrix；

Wherein, R_iiFor a N_RX×N_RXMatrix, represent the first interfered cell channel estimation autocorrelation matrix； N_{CRS_RE}Represent the number of CRS resource units in a PRB；It is that dimension is N_RX×N_apMatrix, represent in current PRB Under k-th of CRS resource unit on N_RXIndividual reception antenna, N_apFirst channel estimation results of individual antenna port；* square is represented Battle array multiplication；(·)^HExpression seeks conjugate transposition to matrix or vector.

Further, it is described according to the autocorrelation matrix, obtain the step of the CRS pilot powers of first interfered cell It is rapid to be specially：

According to formula：P2=Trace (R_ii) calculate the CRS pilot powers of first interfered cell；

Wherein, P2 represents the CRS pilot powers of the first interfered cell；Trace () represents to sum to matrix diagonals line element Function.

Further, it is described according to the PDSCH data powers and the CRS pilot powers, obtain described first dry The step of the first power assignment value for disturbing cell is specially：

By calculating the ratio of the PDSCH data powers and the CRS pilot powers, first interfered cell is obtained The first power assignment value.

Further, it is described according to first power assignment value, determine on the PRB with the presence or absence of the described first interference The step of interference of cell is specially：

According to the power assignment value in the power distribution set of reception, data area is carried out to interval division；

If first interfered cell is not present in default interval in first power assignment value on the PRB Interference；

If in default interval, there is no first interfered cell on the PRB in first power assignment value Interference.

Further, the power assignment value in the power distribution set according to reception, data area is carried out interval Division the step of include：

According to the power assignment value in the power distribution set of reception, the threshold value for carrying out interval division is obtained；

According to the threshold value, data area is divided into multiple intervals.

Further, the power assignment value in the power distribution set according to reception, obtains and carries out interval division The step of threshold value is specially：

According to formula：Obtain the threshold value for carrying out interval division；

Wherein, th_aRepresent a-th of threshold value of progress interval division；P_A,aRepresent the corresponding line of a-th of power assignment value Property value；Δ represents fixed constant；M represents the number of power assignment value in power distribution set.

Further, if first power assignment value is not in default interval, the interference detection method also includes：

Obtain the equivalent channel estimated matrix of first interfered cell；

Assisted according to the equivalent channel estimated matrix, the correlation matrix of first frequency-domain received signal and the interference Variance matrix, obtains second power assignment value of first interfered cell on the PRB.

Further, the step of equivalent channel estimated matrix of acquisition first interfered cell is specially：

According to formula：Obtain equivalent channel estimated matrix of first interfered cell on each code book；

Wherein, H_i,effRepresent equivalent channel estimated matrix of first interfered cell on b-th of code book；Represent On current PRB, the channel estimation results of the first interfered cell；W_bRepresent the value of b-th of code book.

Further, it is described according to the equivalent channel estimated matrix, the correlation matrix of first frequency-domain received signal And the interference covariance matrix, the step of obtaining the second power assignment value of first interfered cell on the PRB Specially：

According to formula：It is small that calculating obtains first interference Second power assignment value of the area on the PRB；

Wherein, P_ARepresent the second power assignment value；R_nnIt is that dimension is N_RX×N_RXMatrix, represent first interfered cell Interference covariance matrix；R_yyFor a N_RX×N_RXMatrix, represent the correlation matrix of first frequency-domain received signal.

The embodiment of the present invention provides a kind of terminal, including：

First determining module, the first interfered cell for determining terminal current service cell；

First acquisition module, for obtaining first interfered cell in the thing shared by the terminal current service cell Manage the Physical Downlink Shared Channel PDSCH data powers and public reference signal CRS pilot powers on resource block PRB；

Second acquisition module, for according to the PDSCH data powers and the CRS pilot powers, obtaining described the First power assignment value of one interfered cell；

Second determining module, for according to first power assignment value, determining to whether there is described first on the PRB The interference of interfered cell.

Further, first acquisition module includes：

First acquisition submodule, for obtain respectively CRS pilot frequency sequence of first interfered cell on the PRB and First frequency-domain received signal；

Channel estimation submodule, for according to the CRS pilot frequency sequences and first frequency-domain received signal, to described First interfered cell carries out channel estimation, obtains the first channel estimation results；

Second acquisition submodule, for according to first channel estimation results, the CRS pilot frequency sequences and described One frequency-domain received signal, obtains the PDSCH data powers of first interfered cell；

3rd acquisition submodule, for according to first channel estimation results, obtaining the CRS of first interfered cell Pilot power.

Further, second acquisition submodule includes：

First acquisition unit, for according to first channel estimation results, the CRS pilot frequency sequences and described first Frequency-domain received signal, obtains the interference covariance matrix of first interfered cell；

Computing unit, for according to first frequency-domain received signal, calculating the correlation of first frequency-domain received signal Matrix；

Second acquisition unit, for according to the correlation matrix and the interference covariance matrix, obtaining described first The PDSCH data powers of interfered cell.

Further, the first acquisition unit specifically for：

According to formula：

Calculate the interference covariance matrix of first interfered cell；

Wherein, R_nnIt is that dimension is N_RX×N_RXMatrix, represent the first interfered cell interference covariance matrix；N_{CRS_RE}Table Show the number of CRS resource units in a PRB；It is that dimension is N_RX×N_apMatrix, represent the under current PRB N on k CRS resource unit_RXIndividual reception antenna, N_apThe frequency of CRS parts in first frequency-domain received signal of individual antenna port Domain receives signal；It is that dimension is N_RX×N_apMatrix, represent on k-th of CRS resource unit under current PRB N_RXIndividual reception antenna, N_apFirst channel estimation results of individual antenna port；It is that dimension is N_ap× 1 vector, is represented N on k-th of CRS resource unit under current PRB_apThe CRS pilot frequency sequences of individual antenna port；It is that dimension is N_RX×N_apMatrix, () represent willEvery row element withEvery row element be multiplied；(·)^HRepresent to matrix Or vector seeks conjugate transposition.

Further, the computing unit specifically for：

According to formula：Calculate the Correlation Moment of first frequency-domain received signal Battle array；

Wherein, R_yyFor a N_RX×N_RXMatrix, represent the correlation matrix of first frequency-domain received signal；It is Dimension is N_RX× 1 matrix, represents the reception signal on k-th of data resource element of the first frequency-domain received signal under current PRB； N_REFor the number of the data resource element under current PRB；* representing matrix multiplication.

Further, the second acquisition unit specifically for：

According to formula：P1=Trace (R_yy-R_nn) calculate the PDSCH data powers for obtaining first interfered cell；

Wherein, P1 represents the PDSCH data powers of the first interfered cell；Trace () represents to seek matrix diagonals line element And function.

Further, the 3rd acquisition submodule includes：

3rd acquiring unit, for according to first channel estimation results, obtaining the channel of first interfered cell The autocorrelation matrix of estimation；

4th acquiring unit, for according to the autocorrelation matrix, obtaining the CRS pilot tone work(of first interfered cell Rate.

Further, the 3rd acquiring unit specifically for：

According to formula：Calculating obtains first interfered cell Channel estimation autocorrelation matrix；

Wherein, R_iiFor a N_RX×N_RXMatrix, represent the first interfered cell channel estimation autocorrelation matrix； N_{CRS_RE}Represent the number of CRS resource units in a PRB；It is that dimension is N_RX×N_apMatrix, represent in current PRB Under k-th of CRS resource unit on N_RXIndividual reception antenna, N_apFirst channel estimation results of individual antenna port；* square is represented Battle array multiplication；(·)^HExpression seeks conjugate transposition to matrix or vector.

Further, the 4th acquiring unit specifically for：

According to formula：P2=Trace (R_ii) calculate the CRS pilot powers of first interfered cell；

Wherein, P2 represents the CRS pilot powers of the first interfered cell；Trace () represents to sum to matrix diagonals line element Function.

Further, second acquisition module specifically for：

By calculating the ratio of the PDSCH data powers and the CRS pilot powers, first interfered cell is obtained The first power assignment value.

Further, second determining module includes：

Submodule is divided, for the power assignment value in the power distribution set according to reception, data area is subjected to area Between division；

Determination sub-module, if first power assignment value it is default it is interval in, described the is not present on the PRB The interference of one interfered cell；

If in default interval, there is no first interfered cell on the PRB in first power assignment value Interference.

Further, the division submodule includes：

Threshold value acquiring unit, for the power assignment value in the power distribution set according to reception, obtains and carries out interval The threshold value of division；

Interval division unit, for dividing according to the threshold value, multiple intervals are divided into by data area.

Further, the threshold value acquiring unit specifically for：

According to formula：Obtain the threshold value for carrying out interval division；

Wherein, th_aRepresent a-th of threshold value of progress interval division；P_A,aRepresent the corresponding line of a-th of power assignment value Property value；Δ represents fixed constant；M represents the number of power assignment value in power distribution set.

Further, the terminal also includes：

3rd acquisition module, the equivalent channel estimated matrix for obtaining first interfered cell；

4th acquisition module, for the correlation according to the equivalent channel estimated matrix, first frequency-domain received signal Matrix and the interference covariance matrix, obtain second power assignment value of first interfered cell on the PRB.

Further, the 3rd acquisition module specifically for：

According to formula：Obtain equivalent channel estimation of first interfered cell on each code book Matrix；

Wherein, H_i,effRepresent equivalent channel estimated matrix of first interfered cell on b-th of code book；Represent On current PRB, the channel estimation results of the first interfered cell；W_bRepresent the value of b-th of code book.

Further, the 4th acquisition module specifically for：

According to formula：It is small that calculating obtains first interference Second power assignment value of the area on the PRB；

Wherein, P_ARepresent the second power assignment value；R_nnIt is that dimension is N_RX×N_RXMatrix, represent first interfered cell Interference covariance matrix；R_yyFor a N_RX×N_RXMatrix, represent the correlation matrix of first frequency-domain received signal.

The beneficial effects of the invention are as follows：

Such scheme, by according to PDSCH data power of the terminal on each PRB shared by current service cell with And CRS pilot powers obtain power assignment value of first interfered cell on current PRB, then judge according to the power assignment value It whether there is the interference of the first interfered cell on current PRB, this programme is realized to the accurate of area interference on the basis of PRB Judge, improve Interference Detection accuracy.

Brief description of the drawings

Fig. 1 represents the schematic flow sheet of the interference detection method of the embodiment of the present invention one；

Fig. 2 represents the schematic flow sheet of the interference detection method of the embodiment of the present invention two；

What Fig. 3 represented the step 24 in embodiment two implements schematic flow sheet；

What Fig. 4 represented the step 25 in embodiment two implements schematic flow sheet；

Fig. 5 represents the schematic flow sheet of the interference detection method of the embodiment of the present invention three；

Fig. 6 represents the schematic flow sheet of the interference detection method of the embodiment of the present invention four；

Fig. 7 represents the overview flow chart of the interference detection method of the present invention；

Fig. 8 represents the module diagram of the terminal of the embodiment of the present invention five；

Fig. 9 represents the schematic diagram of the terminal of the embodiment of the present invention six.

Embodiment

It is right below in conjunction with the accompanying drawings and the specific embodiments to make the object, technical solutions and advantages of the present invention clearer The present invention is described in detail.

The present invention can not obtain the terminal under current service cell for existing technical scheme according to the blind check of terminal It whether there is the interference of interfered cell on shared Physical Resource Block, it is impossible to accurately determine whether there is asking for area interference There is provided a kind of interference detection method and terminal for topic.

Embodiment one

As shown in figure 1, the interference detection method of the embodiment of the present invention one, including：

Step 11, the first interfered cell of terminal current service cell is determined；

It should be noted that in the present embodiment, first interfered cell is that terminal is most strong under current service cell In interfered cell, step 11, terminal can be according to the determination that signal carries out most strong jamming cell that receives of itself.

Step 12, first interfered cell is obtained in the Physical Resource Block shared by the terminal current service cell Physical Downlink Shared Channel PDSCH data powers and public reference signal CRS pilot powers on PRB；

In the present embodiment, PDSCH data powers and CRS pilot powers is mainly used to carry out most strong jamming cell first The calculating of power assignment value, and for the first power assignment value is for each PRB in the present invention, therefore, obtained in step 12 Take be PDSCH data power of first interfered cell on each PRB shared by the terminal current service cell and CRS pilot powers.

Step 13, according to the PDSCH data powers and the CRS pilot powers, first interfered cell is obtained The first power assignment value；

It should be noted that the specific implementation of step 13 is：By calculating PDSCH data powers and CRS pilot tone work( The ratio of rate, obtains the first power assignment value of first interfered cell, i.e. the first power assignment value=PDSCH data work( Rate/CRS pilot powers.

Step 14, according to first power assignment value, determine on the PRB with the presence or absence of first interfered cell Interference.

It should be noted that because NAICS scenes do not support the multiple-input and multiple-output of the multi-user of transmission mode 5, not yet The transmission of 4 ports is supported, therefore, the first power point determined in the present embodiment by PDSCH data powers and CRS pilot powers It is the ρ in 3GPP with value_A。

In the present embodiment, pass through the PDSCH data powers according to terminal on each PRB shared by current service cell And CRS pilot powers obtain power assignment value of first interfered cell on current PRB, then sentence according to the power assignment value Break and whether there is the interference of the first interfered cell on each PRB, this programme realizes the essence to area interference on the basis of PRB Really judge, improve Interference Detection accuracy.

Embodiment two

As shown in Fig. 2 the interference detection method of the embodiment of the present invention two, including：

Step 21, the first interfered cell of terminal current service cell is determined；

Wherein, first interfered cell refers to the most strong jamming cell of current service cell.

Step 22, CRS pilot frequency sequence and first frequency domain of first interfered cell on PRB are obtained respectively to receive Signal；

CRS pilot frequency sequences and the first frequency-domain received signal herein also refers to most strong jamming cell on each PRB CRS pilot frequency sequences and the first frequency-domain received signal.

Step 23, according to the CRS pilot frequency sequences and first frequency-domain received signal, to first interfered cell Channel estimation is carried out, the first channel estimation results are obtained；

Step 24, received and believed according to first channel estimation results, the CRS pilot frequency sequences and first frequency domain Number, obtain the PDSCH data powers of first interfered cell；

Step 25, according to first channel estimation results, the CRS pilot powers of first interfered cell are obtained；

Step 26, according to the PDSCH data powers and the CRS pilot powers, first interfered cell is obtained The first power assignment value；

Step 27, according to first power assignment value, determine on the PRB with the presence or absence of first interfered cell Interference.

Alternatively, as shown in figure 3, the step 24 is specifically included when realizing：

Step 241, received according to first channel estimation results, the CRS pilot frequency sequences and first frequency domain Signal, obtains the interference covariance matrix of first interfered cell；

Step 242, according to first frequency-domain received signal, the correlation matrix of first frequency-domain received signal is calculated；

Step 243, according to the correlation matrix and the interference covariance matrix, first interfered cell is obtained PDSCH data powers.

Specifically, the step 241 can be realized in the following way：

According to formula：

Calculate the interference covariance matrix of first interfered cell；

Wherein, R_nnIt is that dimension is N_RX×N_RXMatrix, represent the first interfered cell interference covariance matrix；N_{CRS_RE}Table Show the number of CRS resource units in a PRB；It is that dimension is N_RX×N_apMatrix, represent the under current PRB N on k CRS resource unit_RXIndividual reception antenna, N_apThe frequency of CRS parts in first frequency-domain received signal of individual antenna port Domain receives signal；It is that dimension is N_RX×N_apMatrix, represent on k-th of CRS resource unit under current PRB N_RXIndividual reception antenna, N_apFirst channel estimation results of individual antenna port；It is that dimension is N_ap× 1 vector, is represented N on k-th of CRS resource unit under current PRB_apThe CRS pilot frequency sequences of individual antenna port；It is that dimension is N_RX×N_apMatrix, () represent willEvery row element withEvery row element be multiplied；(·)^HRepresent to matrix Or vector seeks conjugate transposition.

Specifically, the step 242 can be realized in the following way：

According to formula：Calculate the Correlation Moment of first frequency-domain received signal Battle array；

Wherein, R_yyFor a N_RX×N_RXMatrix, represent the correlation matrix of first frequency-domain received signal；It is Dimension is N_RX× 1 matrix, represents the reception signal on k-th of data resource element of the first frequency-domain received signal under current PRB； N_REFor the number of the data resource element under current PRB；* representing matrix multiplication.

Specifically, the step 243 can be realized in the following way：

According to formula：P1=Trace (R_yy-R_nn) calculate the PDSCH data powers for obtaining first interfered cell；

Wherein, P1 represents the PDSCH data powers of the first interfered cell；Trace () represents to seek matrix diagonals line element And function.

Alternatively, as shown in figure 4, the step 25 is specifically included when realizing：

Step 251, according to first channel estimation results, obtain first interfered cell channel estimation from phase Close matrix；

Step 252, according to the autocorrelation matrix, the CRS pilot powers of first interfered cell are obtained.

Specifically, the step 251 can be realized in the following way：

According to formula：Calculating obtains first interfered cell Channel estimation autocorrelation matrix；

Wherein, R_iiFor a N_RX×N_RXMatrix, represent the first interfered cell channel estimation autocorrelation matrix.

Specifically, the step 252 can be realized in the following way：

According to formula：P2=Trace (R_ii) calculate the CRS pilot powers of first interfered cell；

Wherein, P2 represents the CRS pilot powers of the first interfered cell.

It should be noted that in the present embodiment, CRS pilot tone sequence of first interfered cell on each PRB is obtained first Row and the first frequency-domain received signal, wherein, the CRS pilot frequency sequences are that terminal is reconstructed according to the signal of most strong jamming cell Obtain, first frequency-domain received signal is the frequency for the most strong jamming cell that terminal is extracted in the frequency-domain received signal received Domain receives signal；Then by the computing to the two, the PDSCH data powers and CRS pilot tone work(on each PRB are finally obtained Rate, the calculating of PDSCH data powers and CRS pilot powers is carried out according to the mode provided in the present embodiment, it is ensured that obtain PDSCH data powers and CRS pilot powers have higher accuracy.

Embodiment three

As shown in figure 5, the interference detection method of the embodiment of the present invention three, including：

Step 51, the first interfered cell of terminal current service cell is determined；

Wherein, first interfered cell refers to the most strong jamming cell of current service cell.

Step 52, first interfered cell is obtained in the Physical Resource Block shared by the terminal current service cell Physical Downlink Shared Channel PDSCH data powers and public reference signal CRS pilot powers on PRB；

Step 53, according to the PDSCH data powers and the CRS pilot powers, first interfered cell is obtained The first power assignment value；

Step 54, the power assignment value in the power distribution set of reception, data area is carried out interval division；

It should be noted that the power distribution set is to be pre-configured with and be handed down to terminal by base station side.

Step 55, if first power assignment value is in default interval, described first is not present on the PRB dry Disturb the interference of cell；

Step 56, if first power assignment value has described first dry not in default interval on the PRB Disturb the interference of cell.

It should be noted that being accomplished that in the present embodiment how to be judged whether according to the first obtained power assignment value It is that data interval (i.e. (- ∞ ,+∞)) is carried out to interval division first, for example, can lead in the presence of the interference of most strong jamming cell Cross 2 values and (- ∞ ,+∞) is divided into 3 intervals, alternatively, the step 55 is specifically included when realizing：

According to the power assignment value in the power distribution set of reception, the threshold value for carrying out interval division is obtained；

According to the threshold value, data area is divided into multiple intervals.

Specifically, the power assignment value in the power distribution set according to reception, obtains the door for carrying out interval division The step of limit value, can be realized in the following way：

According to formula：Obtain the threshold value for carrying out interval division；

Wherein, th_aRepresent a-th of threshold value of progress interval division；P_A,aRepresent the corresponding line of a-th of power assignment value Property value；Δ represents fixed constant；M represents the number of power assignment value in power distribution set.

Realization to above-mentioned steps 55 is illustrated below：

Assuming that high-level signaling notifies there is M (M≤3) individual power assignment value in the power distribution set to terminal, by the M work( Rate apportioning cost is converted to corresponding linear value for { P_A,1,...,P_A,M, then according to M linear value after conversion, bring into above-mentioned Formula obtains M threshold value, i.e. { th₁..., th_a, (- ∞ ,+∞) is divided into M+1 interval by the M threshold value, i.e., {Q₀..., Q_M}；

Wherein, Q₀=(- ∞, th₁), Q_M=[th_M,+∞), Q_B=[th_b, th_b+1), 1≤b≤M-1.

Wherein, th is selected in the present invention₁As the line of demarcation with the presence or absence of interference, in actual applications, specific power is selected Minimum value small Δ times in distribution set as border, wherein, Δ is determined by simulation value.

When progress interference judges, if the first power assignment value belongs to interval Q₀, then prove on the PRB of current selected In the absence of the interference of most strong jamming cell；Otherwise, it was demonstrated that there is the interference of most strong jamming cell.

In the present embodiment, by the way that data area to be carried out to interval division, then a certain interval is not present as interference Judgement it is interval, if the first power assignment value belongs to, the judgement is interval, proves that most strong jamming is not present on selected PRB The interference of cell.

Example IV

As shown in fig. 6, the interference detection method of the embodiment of the present invention four, including：

Step 61, the first interfered cell of terminal current service cell is determined；

Wherein, first interfered cell refers to the most strong jamming cell of current service cell.

Step 62, first interfered cell is obtained in the Physical Resource Block shared by the terminal current service cell Physical Downlink Shared Channel PDSCH data powers and public reference signal CRS pilot powers on PRB；

It should be noted that the specific implementation of the step 62 is：First interfered cell is obtained respectively positioned at PRB On CRS pilot frequency sequences and the first frequency-domain received signal；According to CRS pilot frequency sequences and the first frequency-domain received signal, to institute State the first interfered cell and carry out channel estimation, obtain the first channel estimation results；According to first channel estimation results, described CRS pilot frequency sequences and the first frequency-domain received signal, obtain the interference covariance matrix of first interfered cell；According to described First frequency-domain received signal, calculates the correlation matrix of first frequency-domain received signal；According to the correlation matrix and described Interference covariance matrix, obtains the PDSCH data powers of first interfered cell；According to first channel estimation results, Obtain the CRS pilot powers of first interfered cell.

Step 63, according to the PDSCH data powers and the CRS pilot powers, first interfered cell is obtained The first power assignment value；

Step 64, the power assignment value in the power distribution set of reception, data area is carried out interval division；

Step 65, if first power assignment value obtains first interfered cell not in default interval Equivalent channel estimated matrix；

Step 66, according to the equivalent channel estimated matrix, the correlation matrix of first frequency-domain received signal and institute Interference covariance matrix is stated, second power assignment value of first interfered cell on the PRB is obtained.

It should be noted that the present embodiment master is it will be realized that in the presence of interference, carry out interference presence The accurate determination of power assignment value on PRB.

Specifically, the step 65 can be realized in the following way：

According to formula：Obtain equivalent channel estimation of first interfered cell on each code book Matrix；

Wherein, H_i,effRepresent equivalent channel estimated matrix of first interfered cell on b-th of code book；Represent On current PRB, the channel estimation results of the first interfered cell；W_bRepresent the value of b-th of code book.

It should be noted that carrying out channel estimation to most strong jamming cell obtains channel estimation results, it is art technology Technology known to personnel, is no longer described in detail herein.

It is to try to achieve accurate work(using the equivalent estimated matrix after the corresponding equivalent estimated matrix of each code book is obtained Rate apportioning cost, specifically, the step 66 can be realized in the following way：

According to formula：It is small that calculating obtains first interference Second power assignment value of the area on the PRB；

Wherein, P_ARepresent the second power assignment value；R_nnIt is that dimension is N_RX×N_RXMatrix, refer to that above-mentioned first is dry Disturb the interference covariance matrix of cell；R_yyFor a N_RX×N_RXMatrix, refer to above-mentioned first frequency-domain received signal Correlation matrix.

(alternative codebook set such as table in this programme is illustrated below to the realizations of above-mentioned steps 65 and step 66 Shown in 1)：

The codebook set of table 1

Code book autocorrelation matrix when wherein, due to v=2 is equal, therefore, and the equivalent code book in this programme only has 5；Point 5 equivalent code books are not substituted into following equation 1 one by one：

Formula 1：

5 end values are respectively obtained, then a minimum accurate power distribution of conduct of selective value from 5 end values Value.

As shown in fig. 7, the substantially flow of the present invention is：

The rough estimate of the power assignment value on each PRB is carried out first, then according to rough estimate result, judges corresponding It whether there is the interference of most strong jamming cell on PRB, if it does not, terminating in flow；If it does, proceeding to exist The thin estimation of power assignment value on the most PRB of the interference of strong jamming cell, obtains accurate power assignment value on the PRB.

Assuming that in a LTE system, UE is scheduled in PRB₀-PRB₉Upper transmission PDSCH data services, it is assumed that now CRS Port number is 2, reference format indicating bit CFI=2, is transmitted in conventional CP (cyclic prefix) conventional subframe, and network side leads to The possibility transmission mode for knowing interfered cell is { TM2, TM3, TM9 }, the Cell ID (cell ID) of adjacent cell, the PB (ginsengs of cell-level Number, represent power ascension), CRS port numbers, whether be MBSFN (Multi-board Signal Frequency Network, Many partitioned signal frequency networks) subframe and power distribution limitations set.

It is assumed that terminal has known the cell id of most strong jamming cell, PB values are 0, power distribution limitations set for -6, -3, 0 }, CRS port numbers are 2, non-MBSFN sub-frame.

In PRBi^{i∈{0,1,2,3,4,5,6,7,8,9}}On, PRB carries out the detection that the interference of most strong jamming adjacent area whether there is one by one, First, the rough estimate for carrying out power assignment value obtains the first power assignment value.Limitations set is distributed according to high laminate power and is pushed away It is 3 to recommend Δ value, and each value in { -6, -3,0 } is converted into linear value first and is followed successively by：- 6 be converted to linear value for 10^ (- 6/10)=0.2512, -3 be converted to linear value for 10^ (- 3/10)=0.5012,0 be converted to linear value for 10^ (0/10)= 1.0000；The threshold value respectively th of interval division is linearly worth to by above three₁=0.2512/3=0.0837, th₂= (0.2512+0.5012)/2=0.3762, th₃=(0.5012+1)/2=0.7506；Logarithm is respectively obtained according to the threshold value It is according to the interval of region division：

(- ∞, 0.0837), [0.0837,0.3762), [0.3762,0.7506), [0.7506 ,+∞).

When interval of first power assignment value at (- ∞, 0.0837), then judge to obtain not interfering with current PRB, Otherwise, judge to obtain having interference on current PRB, then carry out code book traversal, choosing according to the thin estimation scheme of power assignment value The power assignment value carefully estimated is used as in the minimum end value of code book value correspondence.

Such scheme of the present invention, passes through the PDSCH data according to terminal on each PRB shared by current service cell Power and CRS pilot powers obtain power assignment value of first interfered cell on current PRB, then according to the power distribution Value judges the interference with the presence or absence of the first interfered cell on current PRB, and this programme is realized to area interference on the basis of PRB Accurate judgement, improve Interference Detection accuracy.

Embodiment five

As shown in figure 8, the embodiment of the present invention five provides a kind of terminal 80, including：

First determining module 81, the first interfered cell for determining terminal current service cell；

Wherein, first interfered cell refers to the most strong jamming cell of current service cell.

First acquisition module 82, for obtaining first interfered cell shared by the terminal current service cell Physical Downlink Shared Channel PDSCH data powers and public reference signal CRS pilot powers on Physical Resource Block PRB；

Second acquisition module 83, for according to the PDSCH data powers and the CRS pilot powers, obtaining described First power assignment value of the first interfered cell；

Second determining module 84, for according to first power assignment value, determining on the PRB with the presence or absence of described the The interference of one interfered cell.

Alternatively, first acquisition module 82 includes：

First acquisition submodule, for obtain respectively CRS pilot frequency sequence of first interfered cell on the PRB and First frequency-domain received signal；

Channel estimation submodule, for according to the CRS pilot frequency sequences and first frequency-domain received signal, to described First interfered cell carries out channel estimation, obtains the first channel estimation results；

Second acquisition submodule, for according to first channel estimation results, the CRS pilot frequency sequences and described One frequency-domain received signal, obtains the PDSCH data powers of first interfered cell；

3rd acquisition submodule, for according to first channel estimation results, obtaining the CRS of first interfered cell Pilot power.

Specifically, second acquisition submodule includes：

First acquisition unit, for according to first channel estimation results, the CRS pilot frequency sequences and described first Frequency-domain received signal, obtains the interference covariance matrix of first interfered cell；

Computing unit, for according to first frequency-domain received signal, calculating the correlation of first frequency-domain received signal Matrix；

Second acquisition unit, for according to the correlation matrix and the interference covariance matrix, obtaining described first The PDSCH data powers of interfered cell.

Specifically, the first acquisition unit is used for：

According to formula：

Calculate the interference covariance matrix of first interfered cell；

Wherein, R_nnIt is that dimension is N_RX×N_RXMatrix, represent the first interfered cell interference covariance matrix；N_{CRS_RE}Table Show the number of CRS resource units in a PRB；It is that dimension is N_RX×N_apMatrix, represent the under current PRB N on k CRS resource unit_RXIndividual reception antenna, N_apThe frequency of CRS parts in first frequency-domain received signal of individual antenna port Domain receives signal；It is that dimension is N_RX×N_apMatrix, represent on k-th of CRS resource unit under current PRB N_RXIndividual reception antenna, N_apFirst channel estimation results of individual antenna port；It is that dimension is N_ap× 1 vector, is represented N on k-th of CRS resource unit under current PRB_apThe CRS pilot frequency sequences of individual antenna port；It is that dimension is N_RX×N_apMatrix, () represent willEvery row element withEvery row element be multiplied；(·)^HRepresent to matrix Or vector seeks conjugate transposition.

Specifically, the computing unit is used for：

According to formula：Calculate the correlation matrix of first frequency-domain received signal；

Wherein, R_yyFor a N_RX×N_RXMatrix, represent the correlation matrix of first frequency-domain received signal；It is Dimension is N_RX× 1 matrix, represents the reception signal on k-th of data resource element of the first frequency-domain received signal under current PRB； N_REFor the number of the data resource element under current PRB；* representing matrix multiplication.

Specifically, the second acquisition unit is used for：

According to formula：P1=Trace (R_yy-R_nn) calculate the PDSCH data powers for obtaining first interfered cell；

Wherein, P1 represents the PDSCH data powers of the first interfered cell；Trace () represents to seek matrix diagonals line element And function.

Alternatively, the 3rd acquisition submodule includes：

3rd acquiring unit, for according to first channel estimation results, obtaining the channel of first interfered cell The autocorrelation matrix of estimation；

4th acquiring unit, for according to the autocorrelation matrix, obtaining the CRS pilot tone work(of first interfered cell Rate.

Specifically, the 3rd acquiring unit is used for：

According to formula：Calculating obtains first interfered cell Channel estimation autocorrelation matrix；

Wherein, R_iiFor a N_RX×N_RXMatrix, represent the first interfered cell channel estimation autocorrelation matrix； N_{CRS_RE}Represent the number of CRS resource units in a PRB；It is that dimension is N_RX×N_apMatrix, represent in current PRB Under k-th of CRS resource unit on N_RXIndividual reception antenna, N_apFirst channel estimation results of individual antenna port；* square is represented Battle array multiplication；(·)^HExpression seeks conjugate transposition to matrix or vector.

Specifically, the 4th acquiring unit is used for：

According to formula：P2=Trace (R_ii) calculate the CRS pilot powers of first interfered cell；

Wherein, P2 represents the CRS pilot powers of the first interfered cell；Trace () represents to sum to matrix diagonals line element Function.

Alternatively, second acquisition module 83 specifically for：

By calculating the ratio of the PDSCH data powers and the CRS pilot powers, first interfered cell is obtained The first power assignment value.

Alternatively, second determining module 84 includes：

Submodule is divided, for the power assignment value in the power distribution set according to reception, data area is subjected to area Between division；

Determination sub-module, if first power assignment value it is default it is interval in, described the is not present on the PRB The interference of one interfered cell；

If in default interval, there is no first interfered cell on the PRB in first power assignment value Interference.

Alternatively, the division submodule includes：

Threshold value acquiring unit, for the power assignment value in the power distribution set according to reception, obtains and carries out interval The threshold value of division；

Interval division unit, for dividing according to the threshold value, multiple intervals are divided into by data area.

Specifically, the threshold value acquiring unit is used for：

According to formula：Obtain the threshold value for carrying out interval division；

Wherein, th_aRepresent a-th of threshold value of progress interval division；P_A,aRepresent the corresponding line of a-th of power assignment value Property value；Δ represents fixed constant；M represents the number of power assignment value in power distribution set.

It should be noted that if the first power assignment value is not in default interval, the terminal also includes：

3rd acquisition module, the equivalent channel estimated matrix for obtaining first interfered cell；

4th acquisition module, for the correlation according to the equivalent channel estimated matrix, first frequency-domain received signal Matrix and the interference covariance matrix, obtain second power assignment value of first interfered cell on the PRB.

Specifically, the 3rd acquisition module is used for：

According to formula：Obtain equivalent channel estimation square of first interfered cell on each code book Battle array；

Wherein, H_i,effRepresent equivalent channel estimated matrix of first interfered cell on b-th of code book；Represent On current PRB, the channel estimation results of the first interfered cell；W_bRepresent the value of b-th of code book.

Specifically, the 4th acquisition module specifically for：

According to formula：It is small that calculating obtains first interference Second power assignment value of the area on the PRB；

Wherein, P_ARepresent the second power assignment value；R_nnIt is that dimension is N_RX×N_RXMatrix, represent first interfered cell Interference covariance matrix；R_yyFor a N_RX×N_RXMatrix, represent the correlation matrix of first frequency-domain received signal.

It should be noted that the embodiment of the terminal be with the above-mentioned one-to-one terminal of interference detection method embodiment, All implementations can also reach identical skill suitable for the embodiment of the terminal in above-mentioned interference detection method embodiment Art effect.

Embodiment six

As shown in figure 9, the present embodiment provides a kind of terminal, including：

Processor 91；And the memory 93 being connected by EBI 92 with the processor 91, the memory 93 are used to store the processor 91 used program and data when performing operation, when processor 91 is called and is performed described When the program and data that are stored in memory 93, following functional module is realized：

First determining module, the first interfered cell for determining terminal current service cell；

First acquisition module, for obtaining first interfered cell in the thing shared by the terminal current service cell Manage the Physical Downlink Shared Channel PDSCH data powers and public reference signal CRS pilot powers on resource block PRB；

Second acquisition module, for according to the PDSCH data powers and the CRS pilot powers, obtaining described the First power assignment value of one interfered cell；

Second determining module, for according to first power assignment value, determining to whether there is described first on the PRB The interference of interfered cell.

The processor 91 is additionally operable to realize the function of any one other module of above-mentioned terminal.

It will be understood by those skilled in the art that realize above-described embodiment all or part of step can by hardware come Complete, the hardware of correlation can also be indicated by computer program to complete, the computer program includes performing above-mentioned side The instruction of some or all of step of method；And the computer program can be stored in a readable storage medium storing program for executing, storage medium It can be any type of storage medium.

Above-described is the preferred embodiment of the present invention, it should be pointed out that come for the ordinary person of the art Say, some improvements and modifications can also be made under the premise of principle of the present invention is not departed from, and these improvements and modifications also exist In protection scope of the present invention.

Claims (32)

1. a kind of interference detection method, it is characterised in that including：

Determine the first interfered cell of terminal current service cell；

Obtain under physics of first interfered cell on the Physical Resource Block PRB shared by the terminal current service cell Row shared channel PDSCH data powers and public reference signal CRS pilot powers；

According to the PDSCH data powers and the CRS pilot powers, the first power point of first interfered cell is obtained With value；

According to first power assignment value, determine to whether there is the interference of first interfered cell on the PRB.

2. interference detection method according to claim 1, it is characterised in that acquisition first interfered cell is in institute State Physical Downlink Shared Channel PDSCH data powers on the Physical Resource Block PRB shared by terminal current service cell and The step of public reference signal CRS pilot powers, includes：

CRS pilot frequency sequence and first frequency-domain received signal of first interfered cell on PRB are obtained respectively；

According to the CRS pilot frequency sequences and first frequency-domain received signal, channel is carried out to first interfered cell and estimated Meter, obtains the first channel estimation results；

According to first channel estimation results, the CRS pilot frequency sequences and first frequency-domain received signal, obtain described The PDSCH data powers of first interfered cell；

According to first channel estimation results, the CRS pilot powers of first interfered cell are obtained.

3. interference detection method according to claim 2, it is characterised in that described according to the first channel estimation knot Really, the CRS pilot frequency sequences and first frequency-domain received signal, obtain the PDSCH data work(of first interfered cell The step of rate, includes：

According to first channel estimation results, the CRS pilot frequency sequences and first frequency-domain received signal, obtain described The interference covariance matrix of first interfered cell；

According to first frequency-domain received signal, the correlation matrix of first frequency-domain received signal is calculated；

According to the correlation matrix and the interference covariance matrix, the PDSCH data work(of first interfered cell is obtained Rate.

4. interference detection method according to claim 3, it is characterised in that described according to the first channel estimation knot Really, the CRS pilot frequency sequences and first frequency-domain received signal, obtain the interference covariance square of first interfered cell Battle array the step of be specially：

According to formula：

Calculate the interference covariance matrix of first interfered cell；

Wherein, R_nnIt is that dimension is N_RX×N_RXMatrix, represent the first interfered cell interference covariance matrix；N_{CRS_RE}Represent one The number of CRS resource units in individual PRB；It is that dimension is N_RX×N_apMatrix, represent k-th under current PRB N on CRS resource units_RXIndividual reception antenna, N_apThe frequency domain of CRS parts in first frequency-domain received signal of individual antenna port Receive signal；It is that dimension is N_RX×N_apMatrix, represent the N on k-th of CRS resource unit under current PRB_RX Individual reception antenna, N_apFirst channel estimation results of individual antenna port；It is that dimension is N_ap× 1 vector, represents working as N on k-th of CRS resource unit under preceding PRB_apThe CRS pilot frequency sequences of individual antenna port；It is that dimension is N_RX ×N_apMatrix, () represent willEvery row element withEvery row element be multiplied；(·)^HRepresent to matrix or Vector seeks conjugate transposition.

5. interference detection method according to claim 4, it is characterised in that described received according to first frequency domain is believed Number, it is specially the step of the correlation matrix for calculating first frequency-domain received signal：

According to formula：Calculate the correlation matrix of first frequency-domain received signal；

Wherein, R_yyFor a N_RX×N_RXMatrix, represent the correlation matrix of first frequency-domain received signal；It is dimension For N_RX× 1 matrix, represents the reception signal on k-th of data resource element of the first frequency-domain received signal under current PRB；N_RE For the number of the data resource element under current PRB；* representing matrix multiplication.

6. interference detection method according to claim 5, it is characterised in that described according to the correlation matrix and described The step of interference covariance matrix, PDSCH data powers for obtaining first interfered cell is specially：

According to formula：P1=Trace (R_yy-R_nn) calculate the PDSCH data powers for obtaining first interfered cell；

Wherein, P1 represents the PDSCH data powers of the first interfered cell；Trace () represents letter of being summed to matrix diagonals line element Number.

7. interference detection method according to claim 2, it is characterised in that described according to the first channel estimation knot Really, the step of CRS pilot powers for obtaining first interfered cell, includes：

According to first channel estimation results, the autocorrelation matrix of the channel estimation of first interfered cell is obtained；

According to the autocorrelation matrix, the CRS pilot powers of first interfered cell are obtained.

8. interference detection method according to claim 7, it is characterised in that described according to the first channel estimation knot Really, the step of autocorrelation matrix of the channel estimation of acquisition first interfered cell is specially：

According to formula：Calculate the letter for obtaining first interfered cell The autocorrelation matrix of road estimation；

Wherein, R_iiFor a N_RX×N_RXMatrix, represent the first interfered cell channel estimation autocorrelation matrix；N_{CRS_RE}Table Show the number of CRS resource units in a PRB；It is that dimension is N_RX×N_apMatrix, represent kth under current PRB N on individual CRS resource units_RXIndividual reception antenna, N_apFirst channel estimation results of individual antenna port；* representing matrix multiplication； (·)^HExpression seeks conjugate transposition to matrix or vector.

9. interference detection method according to claim 8, it is characterised in that described according to the autocorrelation matrix, is obtained The step of CRS pilot powers of first interfered cell is specially：

According to formula：P2=Trace (R_ii) calculate the CRS pilot powers of first interfered cell；

Wherein, P2 represents the CRS pilot powers of the first interfered cell；Trace () is represented to matrix diagonals line element summing function.

10. interference detection method according to claim 1, it is characterised in that it is described according to the PDSCH data powers with And the CRS pilot powers, it is specially the step of the first power assignment value for obtaining first interfered cell：

By calculating the ratio of the PDSCH data powers and the CRS pilot powers, the of first interfered cell is obtained One power assignment value.

11. interference detection method according to claim 3, it is characterised in that described according to first power assignment value, Determine on the PRB whether there is first interfered cell interference the step of be specially：

According to the power assignment value in the power distribution set of reception, data area is carried out to interval division；

If the interference of first interfered cell is not present in default interval in first power assignment value on the PRB；

If in default interval, there is no the interference of first interfered cell on the PRB in first power assignment value.

12. interference detection method according to claim 11, it is characterised in that the power distribution set according to reception In power assignment value, the step of data area is carried out into interval division include：

According to the power assignment value in the power distribution set of reception, the threshold value for carrying out interval division is obtained；

According to the threshold value, data area is divided into multiple intervals.

13. interference detection method according to claim 12, it is characterised in that the power distribution set according to reception In power assignment value, obtain carry out interval division threshold value the step of be specially：

According to formula：Obtain the threshold value for carrying out interval division；

Wherein, th_aRepresent a-th of threshold value of progress interval division；P_A,aRepresent the corresponding linear value of a-th of power assignment value； Δ represents fixed constant；M represents the number of power assignment value in power distribution set.

14. interference detection method according to claim 11, it is characterised in that if first power assignment value is not pre- If interval in, the interference detection method also includes：

Obtain the equivalent channel estimated matrix of first interfered cell；

According to the equivalent channel estimated matrix, the correlation matrix of first frequency-domain received signal and the interference covariance Matrix, obtains second power assignment value of first interfered cell on the PRB.

15. interference detection method according to claim 14, it is characterised in that acquisition first interfered cell The step of equivalent channel estimated matrix is specially：

According to formula：Obtain equivalent channel estimated matrix of first interfered cell on each code book；

Wherein, H_i,effRepresent equivalent channel estimated matrix of first interfered cell on b-th of code book；Represent current On PRB, the channel estimation results of the first interfered cell；W_bRepresent the value of b-th of code book.

16. interference detection method according to claim 15, it is characterised in that described that square is estimated according to the equivalent channel Battle array, the correlation matrix of first frequency-domain received signal and the interference covariance matrix, obtain first interfered cell The step of the second power assignment value on the PRB is specially：

According to formula：Calculating obtains first interfered cell and existed The second power assignment value on the PRB；

Wherein, P_ARepresent the second power assignment value；R_nnIt is that dimension is N_RX×N_RXMatrix, represent the first interfered cell interference association Variance matrix；R_yyFor a N_RX×N_RXMatrix, represent the correlation matrix of first frequency-domain received signal.

17. a kind of terminal, it is characterised in that including：

First determining module, the first interfered cell for determining terminal current service cell；

First acquisition module, for obtaining first interfered cell in the physics money shared by the terminal current service cell Physical Downlink Shared Channel PDSCH data powers and public reference signal CRS pilot powers on source block PRB；

Second acquisition module, for according to the PDSCH data powers and the CRS pilot powers, obtaining described first dry Disturb the first power assignment value of cell；

Second determining module, for according to first power assignment value, determining on the PRB with the presence or absence of the described first interference The interference of cell.

18. terminal according to claim 17, it is characterised in that first acquisition module includes：

First acquisition submodule, for obtaining CRS pilot frequency sequence and first of first interfered cell on PRB respectively Frequency-domain received signal；

Channel estimation submodule, for according to the CRS pilot frequency sequences and first frequency-domain received signal, to described first Interfered cell carries out channel estimation, obtains the first channel estimation results；

Second acquisition submodule, for according to first channel estimation results, the CRS pilot frequency sequences and first frequency Domain receives signal, obtains the PDSCH data powers of first interfered cell；

3rd acquisition submodule, for according to first channel estimation results, obtaining the CRS pilot tones of first interfered cell Power.

19. terminal according to claim 18, it is characterised in that second acquisition submodule includes：

First acquisition unit, for according to first channel estimation results, the CRS pilot frequency sequences and first frequency domain Signal is received, the interference covariance matrix of first interfered cell is obtained；

Computing unit, for according to first frequency-domain received signal, calculating the correlation matrix of first frequency-domain received signal；

Second acquisition unit, for according to the correlation matrix and the interference covariance matrix, obtaining first interference The PDSCH data powers of cell.

20. terminal according to claim 19, it is characterised in that the first acquisition unit specifically for：

According to formula：

Calculate the interference covariance matrix of first interfered cell；

Wherein, R_nnIt is that dimension is N_RX×N_RXMatrix, represent the first interfered cell interference covariance matrix；N_{CRS_RE}Represent one The number of CRS resource units in individual PRB；It is that dimension is N_RX×N_apMatrix, represent k-th under current PRB N on CRS resource units_RXIndividual reception antenna, N_apThe frequency domain of CRS parts in first frequency-domain received signal of individual antenna port Receive signal；It is that dimension is N_RX×N_apMatrix, represent the N on k-th of CRS resource unit under current PRB_RX Individual reception antenna, N_apFirst channel estimation results of individual antenna port；It is that dimension is N_ap× 1 vector, represents working as N on k-th of CRS resource unit under preceding PRB_apThe CRS pilot frequency sequences of individual antenna port；It is that dimension is N_RX ×N_apMatrix, () represent willEvery row element withEvery row element be multiplied；(·)^HRepresent to matrix or Vector seeks conjugate transposition.

21. terminal according to claim 20, it is characterised in that the computing unit specifically for：

According to formula：Calculate the correlation matrix of first frequency-domain received signal；

Wherein, R_yyFor a N_RX×N_RXMatrix, represent the correlation matrix of first frequency-domain received signal；It is dimension For N_RX× 1 matrix, represents the reception signal on k-th of data resource element of the first frequency-domain received signal under current PRB；N_RE For the number of the data resource element under current PRB；* representing matrix multiplication.

22. terminal according to claim 21, it is characterised in that the second acquisition unit specifically for：

According to formula：P1=Trace (R_yy-R_nn) calculate the PDSCH data powers for obtaining first interfered cell；

Wherein, P1 represents the PDSCH data powers of the first interfered cell；Trace () represents letter of being summed to matrix diagonals line element Number.

23. terminal according to claim 18, it is characterised in that the 3rd acquisition submodule includes：

3rd acquiring unit, for according to first channel estimation results, obtaining the channel estimation of first interfered cell Autocorrelation matrix；

4th acquiring unit, for according to the autocorrelation matrix, obtaining the CRS pilot powers of first interfered cell.

24. terminal according to claim 23, it is characterised in that the 3rd acquiring unit specifically for：

According to formula：Calculate the letter for obtaining first interfered cell The autocorrelation matrix of road estimation；

Wherein, R_iiFor a N_RX×N_RXMatrix, represent the first interfered cell channel estimation autocorrelation matrix；N_{CRS_RE}Table Show the number of CRS resource units in a PRB；It is that dimension is N_RX×N_apMatrix, represent kth under current PRB N on individual CRS resource units_RXIndividual reception antenna, N_apFirst channel estimation results of individual antenna port；* representing matrix multiplication； (·)^HExpression seeks conjugate transposition to matrix or vector.

25. terminal according to claim 24, it is characterised in that the 4th acquiring unit specifically for：

According to formula：P2=Trace (R_ii) calculate the CRS pilot powers of first interfered cell；

Wherein, P2 represents the CRS pilot powers of the first interfered cell；Trace () is represented to matrix diagonals line element summing function.

26. terminal according to claim 17, it is characterised in that second acquisition module specifically for：

By calculating the ratio of the PDSCH data powers and the CRS pilot powers, the of first interfered cell is obtained One power assignment value.

27. terminal according to claim 19, it is characterised in that second determining module includes：

Submodule is divided, for the power assignment value in the power distribution set according to reception, data area is subjected to interval Divide；

Determination sub-module, if first power assignment value is in default interval, is not present described first dry on the PRB Disturb the interference of cell；

If there is the dry of first interfered cell on the PRB not in default interval in first power assignment value Disturb.

28. terminal according to claim 27, it is characterised in that the division submodule includes：

Threshold value acquiring unit, for the power assignment value in the power distribution set according to reception, obtains and carries out interval division Threshold value；

Interval division unit, for dividing according to the threshold value, multiple intervals are divided into by data area.

29. terminal according to claim 28, it is characterised in that the threshold value acquiring unit specifically for：

According to formula：Obtain the threshold value for carrying out interval division；

Wherein, th_aRepresent a-th of threshold value of progress interval division；P_A,aRepresent the corresponding linear value of a-th of power assignment value； Δ represents fixed constant；M represents the number of power assignment value in power distribution set.

30. terminal according to claim 27, it is characterised in that also include：

3rd acquisition module, the equivalent channel estimated matrix for obtaining first interfered cell；

4th acquisition module, for the correlation matrix according to the equivalent channel estimated matrix, first frequency-domain received signal And the interference covariance matrix, obtain second power assignment value of first interfered cell on the PRB.

31. terminal according to claim 30, it is characterised in that the 3rd acquisition module specifically for：

According to formula：Obtain equivalent channel estimated matrix of first interfered cell on each code book；

Wherein, H_i,effRepresent equivalent channel estimated matrix of first interfered cell on b-th of code book；Represent current On PRB, the channel estimation results of the first interfered cell；W_bRepresent the value of b-th of code book.

32. terminal according to claim 31, it is characterised in that the 4th acquisition module specifically for：

According to formula：Calculating obtains first interfered cell and existed The second power assignment value on the PRB；

Wherein, P_ARepresent the second power assignment value；R_nnIt is that dimension is N_RX×N_RXMatrix, represent the first interfered cell interference association Variance matrix；R_yyFor a N_RX×N_RXMatrix, represent the correlation matrix of first frequency-domain received signal.