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CN108667472A - A kind of interference detection method and device - Google Patents

A kind of interference detection method and device Download PDF

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Publication number
CN108667472A
CN108667472A CN201710187293.2A CN201710187293A CN108667472A CN 108667472 A CN108667472 A CN 108667472A CN 201710187293 A CN201710187293 A CN 201710187293A CN 108667472 A CN108667472 A CN 108667472A
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power
adjacent area
symbol
cumulative
ratio
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CN108667472B (en
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赵丽娟
张骏凌
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Sanechips Technology Co Ltd
Shenzhen ZTE Microelectronics Technology Co Ltd
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Shenzhen ZTE Microelectronics Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention discloses a kind of interference detection method and devices, obtain the reception signal of each subcarrier in the corresponding resource module RB of i-th of symbol, according to the reception signal of each subcarrier, calculate first reception power of the RB on i-th of symbol；I is more than or equal to 0 and less than the natural number for occupying symbolic number in a subframe；Obtain the corresponding whole RB of i-th of symbol multiple first receive power, receive power according to multiple first, calculate the full bandwidth mean power on i-th of symbol；The neighbor received signal that each subcarrier is obtained from the reception signal of each subcarriers of the RB on i-th of symbol calculates adjacent areas of the RB on i-th of symbol and receives power according to the neighbor received signal of each subcarrier；Power, full bandwidth mean power, adjacent area reception power and predetermined power thresholding are received according to first, judges to interfere with the presence or absence of adjacent area on a RB, judges whether carry out adjacent area parameter blind examination flow on a RB.

Description

A kind of interference detection method and device
Technical field
The present invention relates to the detection techniques more particularly to a kind of interference detection method and device in the communications field.
Background technology
With the continuous growth of mobile communication subscriber demand, spectral efficient is just becoming the major requirement of mobile communication system One of, in order to meet this demand, third generation partner program (3GPP, 3rd Generation Partnership Project) advanced long evolving system (LTE-A, Long Term Evolution Advanced), which is expected that by, utilizes frequency Spectrum efficiency provides more flexible spectrum management.Such as carrier wave polymerization/heterogeneous network etc..By taking compact frequency reuse Basic means can improve spectrum management flexibility, so as to improve the spectrum efficiency of multicell network, but this method Cell edge will be caused to have stronger inter-cell interference, and serious performance is caused to decline.In order to eliminate interference, existing skill It is interfered by network assistance in art and eliminates and inhibit (NAICS, Network Assisted Interference Cancellation and Suppression) improve the property of Cell Edge User equipment (UEs, User Equipments) Energy.
During NAICS receivers are by canceling out the data progress Ming Dynasty style demodulation of interference source, UE needs Obtain the parameter letter of main interference Physical Downlink Shared Channel (PDSCH, Physical Downlink Shared Channel) Breath, to carry out further interference eliminate (IC, Interference Cancellation) or AF panel (IS, Interference Suppression), that is to say, that for being based on cell special reference (CRS, Cell-specific Reference signals) transmission mode, it is also necessary to other interference parameters, such as transmission mode, pre-coding matrix instruction (PMI, Precoding Matrix Indicator), the number of plies (RI, Rayer Indicator), modulation system and power back-off Factor etc. carries out blind examination.
In the prior art, for the transmission mode based on cell special reference CRS, since CRS and PDSCH is not tied up Surely it sends, therefore PRB can not be determined by detecting CRS in for based on the detection process of the interference of CRS transmission modes It is upper to be interfered with the presence or absence of PDSCH, therefore needed to whole interference on uncertain PRB with the presence or absence of PDSCH interference Parameter carries out blind examination, to increase the signaling overheads of blind examination flow, and the defect that the efficiency for interfering elimination reduces.
Invention content
A kind of interference detection method of offer of the embodiment of the present invention and device, by determining on PRB with the presence or absence of adjacent area PDSCH is interfered, and is realized and is carried out adjacent area parameter blind detection operation for the PRB interfered there are PDSCH, to reduce blind examination flow Signaling overheads, and it is effectively improved the efficiency that interference is eliminated.
In order to achieve the above objectives, the technical solution of the embodiment of the present invention is realized in：
An embodiment of the present invention provides a kind of interference detection method, the method includes：
The reception signal for obtaining each subcarrier in the corresponding resource module RB of i-th of symbol, according to described each The reception signal of subcarrier calculates first reception power of one RB on i-th of symbol；Wherein, i be more than etc. In 0 and less than the natural number for occupying symbolic number in subframe；
Obtain the corresponding whole RB of i-th of symbol multiple first receive power, and power is received according to the multiple first, Calculate the full bandwidth mean power on i-th of symbol；
The load per height is obtained from the reception signal of each subcarriers of one RB on i-th of symbol The neighbor received signal of wave calculates one RB and is accorded at described i-th according to the neighbor received signal of each subcarrier Adjacent area on number receives power；
Power, the full bandwidth mean power, adjacent area reception power and predetermined power door are received according to described first Limit judges to interfere with the presence or absence of adjacent area on one RB, and then judges whether carry out adjacent area parameter blind examination on one RB Flow.
In the above scheme, the predetermined power thresholding includes presetting absolute thresholding and default relative threshold, the basis Described first receives power, the full bandwidth mean power, adjacent area reception power and predetermined power thresholding, judges described one It is interfered with the presence or absence of adjacent area on a RB, and then judges whether carry out adjacent area parameter blind examination flow on one RB, including：
By receiving power and full bandwidth mean power progress scale operation to described first, the first ratio is obtained；
If first ratio is less than or equal to the default absolute thresholding, judge that institute is not present on one RB Adjacent area interference is stated, and then is judged on one RB without the adjacent area parameter blind examination flow；
If first ratio is more than the default absolute thresholding, power, the adjacent area are received according to described first Power and the default relative threshold are received, it is secondary to judge to interfere with the presence or absence of the adjacent area on one RB, and then two It is secondary to judge the adjacent area parameter blind examination flow whether is carried out on one RB.
In the above scheme, described to receive power, adjacent area reception power and the default phase according to described first It is secondary to judge to interfere with the presence or absence of the adjacent area on one RB to thresholding, so it is secondary judge on one RB whether The adjacent area parameter blind examination flow is carried out, including：
Power progress scale operation is received by receiving power and described first to the adjacent area, obtains the second ratio；
If second ratio is more than or equal to the default relative threshold, judge to exist on one RB described Adjacent area is interfered, and then judges to carry out the adjacent area parameter blind examination flow on one RB；
If second ratio is less than the default relative threshold, judge that the neighbour is not present on one RB Area interferes, and then judges on one RB without the adjacent area parameter blind examination flow.
In the above scheme, the reception signal according to each subcarrier calculates one RB described i-th After first on a symbol receives power, the method further includes：
It obtains the i-th+x symbols corresponding first and receives power, the i-th+x corresponding full bandwidth mean powers of symbol and the The corresponding adjacent area of i+x symbol receives power；Wherein, i+x is more than or equal to 0 and to be less than oneself that symbolic number is occupied in a subframe So number, x are non-zero integer；
To one RB i-th of symbol and the i-th+x symbols corresponding multiple first receive power into Row accumulation calculating obtains the cumulative reception power of one RB；
Accumulation calculating is carried out to i-th of symbol and the corresponding multiple full bandwidth mean powers of the i-th+x symbols, Obtain the full bandwidth mean power that adds up；
To one RB the corresponding multiple adjacent areas of i-th of symbol and the i-th+x symbols receive power into Row accumulation calculating, the cumulative adjacent area for obtaining one RB receive power；
Power and institute are received according to the cumulative reception power, the cumulative full bandwidth mean power, the cumulative adjacent area Predetermined power thresholding is stated, judges to interfere with the presence or absence of adjacent area on one RB, and then judge whether carry out on one RB Adjacent area parameter blind examination flow.
In the above scheme, the predetermined power thresholding includes presetting absolute thresholding and default relative threshold, the basis The cumulative reception power, the cumulative full bandwidth mean power, the cumulative adjacent area receive power and the predetermined power door Limit judges to interfere with the presence or absence of adjacent area on one RB, and then judges whether carry out adjacent area parameter blind examination on one RB Flow, including：
By carrying out scale operation to the cumulative reception power and the cumulative full bandwidth mean power, third ratio is obtained Value；
If the third ratio is less than or equal to the default absolute thresholding, judge that institute is not present on one RB Adjacent area interference is stated, and then is judged on one RB without the adjacent area parameter blind examination flow；
If the third ratio be more than it is described preset absolute thresholding, according to cumulative the receptions power, it is described add up Adjacent area receives power and the default relative threshold, secondary to judge to interfere with the presence or absence of the adjacent area on one RB, into And secondary judge the adjacent area parameter blind examination flow whether is carried out on one RB.
In the above scheme, it is described according to the cumulative reception power, the cumulative adjacent area receive power and described pre- It is secondary to judge to interfere with the presence or absence of the adjacent area on one RB if relative threshold, and then on the secondary one RB of judgement Whether the adjacent area parameter blind examination flow is carried out, including：
By receiving power and the cumulative reception power progress scale operation to the cumulative adjacent area, the 4th ratio is obtained Value；
If the 4th ratio is more than or equal to the default relative threshold, judge to exist on one RB described Adjacent area is interfered, and then judges to carry out the adjacent area parameter blind examination flow on one RB；
If the 4th ratio is less than the default relative threshold, judge that the neighbour is not present on one RB Area interferes, and then judges on one RB without the adjacent area parameter blind examination flow.
An embodiment of the present invention provides a kind of interference detecting apparatus, which is characterized in that described device includes acquiring unit, meter Unit, judging unit are calculated,
The acquiring unit, the reception for obtaining each subcarrier in the corresponding resource module RB of i-th of symbol Signal；Wherein, i is more than or equal to 0 and less than the natural number for occupying symbolic number in a subframe；And obtain i-th of symbol pair Multiple the first of the whole RB answered receive power；And each subcarrier from one RB on i-th of symbol Receive the neighbor received signal that each subcarrier is obtained in signal；
The computing unit calculates one RB described i-th for the reception signal according to each subcarrier First on a symbol receives power；And power is received according to the multiple first, calculate the full band on i-th of symbol Wide mean power；And the neighbor received signal according to each subcarrier, one RB is calculated in i-th of symbol On adjacent area receive power；
The judging unit, for receiving power, the full bandwidth mean power, adjacent area reception according to described first Power and predetermined power thresholding judge to interfere with the presence or absence of adjacent area on one RB, so judge on one RB whether Carry out adjacent area parameter blind examination flow.
In the above scheme, the predetermined power thresholding includes presetting absolute thresholding and default relative threshold, the interference Detection device further includes blind examination unit,
The computing unit is additionally operable to by receiving power and full bandwidth mean power progress ratio to described first Operation obtains the first ratio；
The judging unit judges if being less than or equal to the default absolute thresholding specifically for first ratio Go out on one RB that the adjacent area is not present and interferes；And if first ratio is more than the default absolute thresholding, Power is received according to described first, the adjacent area receives power and the default relative threshold, the secondary one RB of judgement It is upper to be interfered with the presence or absence of the adjacent area, and then secondary judge the adjacent area parameter blind examination flow whether is carried out on one RB；
The blind examination unit, for when judging to interfere there is no the adjacent area on one RB, terminating the neighbour Area's parameter blind examination flow.
In the above scheme, the computing unit is additionally operable to receive by receiving power and described first to the adjacent area Power carries out scale operation, obtains the second ratio；
The judging unit is sentenced if being specifically additionally operable to second ratio is more than or equal to the default relative threshold Break and on one RB that there are adjacent area interference；And if second ratio is less than the default relative threshold, Judge that there is no the adjacent areas to interfere on one RB；
The blind examination unit is additionally operable to when judging to interfere there are the adjacent area on one RB, one RB It is upper to carry out the adjacent area parameter blind examination flow.
In the above scheme, the acquiring unit is additionally operable to the reception signal according to each subcarrier, calculates After the first reception power of one RB on i-th of symbol, obtains the i-th+x symbols corresponding first and receive work( Rate, the i-th+x corresponding full bandwidth mean powers of symbol and the corresponding adjacent area of the i-th+x symbols receive power；Wherein, i+x is More than or equal to 0 and less than the natural number for occupying symbolic number in a subframe, x is non-zero integer；
The computing unit is additionally operable to corresponding in i-th of symbol and the i-th+x symbols to one RB Multiple first, which receive power, carries out accumulation calculating, obtains the cumulative reception power of one RB；To i-th of symbol and institute It states the corresponding multiple full bandwidth mean powers of the i-th+x symbols and carries out accumulation calculating, obtain the full bandwidth mean power that adds up；To institute It states a RB to receive power in i-th of symbol and the corresponding multiple adjacent areas of the i-th+x symbols and carry out accumulation calculating, obtain The cumulative adjacent area for obtaining one RB receives power；
The judging unit, for according to cumulative the receptions power, the cumulative full bandwidth mean power, it is described add up Adjacent area receives power and the predetermined power thresholding, judges to interfere with the presence or absence of adjacent area on one RB, and then described in judgement Whether adjacent area parameter blind examination flow is carried out on one RB.
In the above scheme, the predetermined power thresholding includes presetting absolute thresholding and default relative threshold, the interference Detection device further includes blind examination unit,
The computing unit is additionally operable to by being carried out to the cumulative reception power and the cumulative full bandwidth mean power Scale operation obtains third ratio；
The judging unit is sentenced if being specifically additionally operable to the third ratio is less than or equal to the default absolute thresholding Break on one RB that the adjacent area is not present and interfere；And if the third ratio is more than the default absolute thresholding, Power and the default relative threshold are then received according to the cumulative reception power, the cumulative adjacent area, described in secondary judgement It is interfered with the presence or absence of the adjacent area on one RB, and then secondary judges whether carry out the adjacent area parameter blind examination on one RB Flow；
The blind examination unit, for when judging to interfere there is no the adjacent area on one RB, terminating the neighbour Area's parameter blind examination flow.
In the above scheme, the computing unit is additionally operable to by receiving power and described cumulative to the cumulative adjacent area It receives power and carries out scale operation, obtain the 4th ratio；
The judging unit is sentenced if being specifically additionally operable to the 4th ratio is more than or equal to the default relative threshold Break and on one RB that there are adjacent area interference；And if the 4th ratio is less than the default relative threshold, Judge that there is no the adjacent areas to interfere on one RB；
The blind examination unit is additionally operable to when judging to interfere there are the adjacent area on one RB, one RB It is upper to carry out the adjacent area parameter blind examination flow.
In the technical solution of the embodiment of the present invention, obtains in the corresponding resource module RB of i-th of symbol and carried per height The reception signal of wave calculates said one RB first connecing on i-th of symbol according to the reception signal of above-mentioned each subcarrier Receive power；Wherein, i is more than or equal to 0 and less than the natural number for occupying symbolic number in a subframe；I-th of symbol is obtained to correspond to Whole RB multiple first receive power, receive power according to above-mentioned multiple first, the full bandwidth calculated on i-th of symbol is flat Equal power；The adjacent area of each subcarrier is obtained from the reception signal of each subcarriers of the said one RB on i-th of symbol Signal is received, according to the neighbor received signal of above-mentioned each subcarrier, adjacent areas of the said one RB on i-th of symbol is calculated and connects Receive power；Power, above-mentioned full bandwidth mean power, above-mentioned adjacent area reception power and predetermined power door are received according to above-mentioned first Limit judges to interfere with the presence or absence of adjacent area on said one RB, and then judges whether carry out adjacent area parameter blind examination on said one RB Flow.It can be seen that a kind of interference detection method and device that the embodiment of the present invention proposes, to interference parameter carry out blind examination it Before, it can first determine that the PDSCH on PRB with the presence or absence of adjacent area is interfered, can terminate when there is no the PDSCH of adjacent area is interfered blind Inspection operation, realizes and carries out blind detection operation for the PRB interfered there are PDSCH, to reduce the signaling overheads of blind examination flow, and It is effectively improved the efficiency that interference is eliminated；Also, implement simple and convenient, convenient for universal, the scope of application is wider.
Description of the drawings
Fig. 1 is that flow chart is eliminated in interference in NAICS receivers；
Fig. 2 is a kind of implementation process schematic diagram one for interference detection method that the embodiment of the present invention proposes；
Fig. 3 is a kind of implementation process schematic diagram two for interference detection method that the embodiment of the present invention proposes；
Fig. 4 is a kind of implementation process schematic diagram three for interference detection method that the embodiment of the present invention proposes；
Fig. 5 is a kind of implementation process schematic diagram four for interference detection method that the embodiment of the present invention proposes；
Fig. 6 is a kind of implementation process schematic diagram five for interference detection method that the embodiment of the present invention proposes；
Fig. 7 is a kind of implementation process schematic diagram six for interference detection method that the embodiment of the present invention proposes；
Fig. 8 is that present invention detection adjacent area interference is used to exist and ideal detection performance comparison diagram under NAICS patterns；
Fig. 9 is a kind of composed structure schematic diagram one for interference detecting apparatus that the embodiment of the present invention proposes；
Figure 10 is a kind of composed structure schematic diagram two for interference detecting apparatus that the embodiment of the present invention proposes.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes.
Since NAICS receivers mainly eliminate interference of the strong adjacent area to serving cell, it is assumed that adjacent area 1 is strong jamming cell, Adjacent area 2 is weak jamming cell, it is therefore desirable to carry out parameter blind examination to adjacent area 1, Fig. 1 is that flow is eliminated in interference in NAICS receivers Figure.As shown in Figure 1, receiving terminal receives signal, by radio frequency (RF, Radio Frequency) and fast Fourier transform (FFT, Fast Fourier Transformation) processing after, obtain i-th orthogonal frequency division multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) reception signal Y (i, m) on m-th of subcarrier of symbol, small to servicing After area's signal estimation, by removing the transmitting signal X (i, m) of serving cell, reconstruct on i-th of OFDM symbol, m-th of subcarrier Neighboring area signal is denoted as YNC(i, m), NAICS receivers mainly do parameter blind Detecting to adjacent area 1, it is therefore desirable to 2 signal of adjacent area Residual noise whitening processing is carried out with noise, the neighbor received signal after albefaction is denoted as YNC1(i, m), finally can be according to upper It states and receives signal Y (i, m) for the neighbor received signal Y after albefactionNC1(i, m) carries out the reconstruction of dominant interference cell signal and elimination, And carry out multiple-input, multiple-output (MIMO, Multiple-Input Multiple-Output) detection.
It should be noted that the embodiment of the present invention is to eliminate interference of the strong adjacent area to serving cell based on NAICS receivers When, reception signal Y (i, m) and albefaction on obtaining i-th of OFDM symbol, m-th of subcarrier fall 2 signal of adjacent area and noise Neighbor received signal YNC1The detection that PDSCH is interfered realized on the basis of (i, m).
Embodiment one
Fig. 2 is a kind of implementation process schematic diagram one for interference detection method that the embodiment of the present invention proposes, as shown in Fig. 2, In a specific embodiment of the present invention, the method being detected to the PDSCH of adjacent area interference mainly includes the following steps that：
Step 101, the reception signal for obtaining each subcarrier in the corresponding resource module RB of i-th of symbol, according to The reception signal of each subcarrier calculates first reception power of the said one RB on i-th of symbol；Wherein, i be more than etc. In 0 and less than the natural number for occupying symbolic number in subframe.
In a specific embodiment of the present invention, device obtains the corresponding resource module RB of i-th of symbol and is carried per height The reception signal of wave calculates said one RB then according to the reception signal of each subcarrier in said one resource module RB First on i-th of symbol receives power.
Further, in a specific embodiment of the present invention, above-mentioned symbol can be OFDM symbol, above-mentioned resource module RB Include multiple subcarriers, such as a RB includes 12 subcarriers.
Further, in a specific embodiment of the present invention, i indicates the position of OFDM symbol in a subframe, such as one A subframe includes 14 symbols, then i-th of symbol is any one symbol in 0~13 symbol.Preferably, the present invention's In specific embodiment, i-th of symbol should choose the character position not comprising pilot tone.
Further, in a specific embodiment of the present invention, first reception power of the said one RB on i-th of symbol For the summation for receiving the corresponding reception power of signal of each subcarrier in said one RB.
Further, in a specific embodiment of the present invention, if reception on i-th of OFDM symbol, m-th of subcarrier When signal is Y (i, m), it can be obtained according to formula (1) and receive the of signal on i-th of OFDM symbol, k-th of RB (RB) One receives power PY(i, k), wherein i be more than or equal to 0 and less than the natural number for occupying symbolic number in subframe, k be more than Natural number equal to 0.
In formula (1),The sub-carrier number occupied in frequency domain for each RB.
Step 102, the multiple first receptions power for obtaining the corresponding whole RB of i-th of symbol, according to above-mentioned multiple first Power is received, the full bandwidth mean power on i-th of symbol is calculated.
In a specific embodiment of the present invention, after calculate acquisition said one RB first receives power, device can Power is received with obtain the corresponding whole RB of i-th of symbol multiple first, then receives power, meter according to above-mentioned multiple first Calculate the corresponding full bandwidth mean power of i-th of symbol.
Further, in a specific embodiment of the present invention, it is received on calculating i-th of OFDM symbol of acquisition, k-th of RB The first of signal receives power PYAfter (i, k), device can calculate according to formula (2) and obtain the corresponding full band of i-th of symbol Wide mean powerIt is as follows：
Wherein, { A } is the RB set of serving cell distribution, and K is RB number of distribution,For downstream transmission bandwidth.
Further, in a specific embodiment of the present invention, by receiving signal on i-th of OFDM symbol, k-th of RB First receive power PY(i, k) is calculated according to above-mentioned formula (2), can be obtained the corresponding full bandwidth of i-th of symbol Mean power.
Step 103, each subcarrier from a RB on i-th of symbol reception signal in obtain each subcarrier Neighbor received signal calculates adjacent areas of the said one RB on i-th of symbol and connects according to the neighbor received signal of each subcarrier Receive power.
In a specific embodiment of the present invention, it is carried per height in obtaining the corresponding resource module RB of i-th of symbol After the reception signal of wave, the adjacent area that device can obtain each subcarrier from the reception signal of each subcarrier receives letter Number, according to the neighbor received signal of each subcarrier, calculates adjacent areas of the said one RB on i-th of symbol and receive power.
Further, in a specific embodiment of the present invention, device interferes to differentiate that adjacent area whether there is, it is therefore desirable to Know the power of neighboring area signal.
Further, in a specific embodiment of the present invention, the reception signal Y (i, m) of above-mentioned each subcarrier is carried out Whitening operation removes the signal and noise of weak jamming cell, to obtain the signal after each subcarrier albefaction, i.e., is carried per height The neighbor received signal Y of waveNC1(i,m)。
Further, in a specific embodiment of the present invention, device can be calculated according to formula (3), be obtained above-mentioned The adjacent area of i-th of symbol, k-th of RB receives powerIt is as follows：
Further, in a specific embodiment of the present invention, by each in corresponding RB of i-th of OFDM symbol The neighbor received signal Y of subcarrierNC1(i, m) is calculated according to above-mentioned formula (3), can be obtained i-th of symbol and be corresponded to A RB adjacent area receive power.
Step 104 receives power, full bandwidth mean power, adjacent area reception power and predetermined power thresholding according to first, sentences It is interfered with the presence or absence of adjacent area on disconnected said one RB, and then judges whether carry out adjacent area parameter blind examination flow on said one RB.
In a specific embodiment of the present invention, device receives work(in obtain above-mentioned i-th of OFDM symbol, one RB first Rate PY(i, k), the corresponding full bandwidth mean power of i-th of symbolThe adjacent area of the corresponding RB of i-th of symbol Receive powerLater, can according to it is above-mentioned first receive power, full bandwidth mean power, adjacent area receive power and Predetermined power thresholding judges to interfere with the presence or absence of adjacent area on said one RB, and then judges whether carry out adjacent area on said one RB Parameter blind examination flow.
Further, in a specific embodiment of the present invention, predetermined power thresholding may include presetting absolute thresholding and pre- If relative threshold, wherein presetting the value of absolute thresholding and default relative threshold can configure, it is preferable that the present invention is specifically real It applies in example, default absolute door is set and is limited to 0.25, it is 0.5 to preset relative threshold.
Further, in a specific embodiment of the present invention, when above-mentioned first reception power is flat much smaller than above-mentioned full bandwidth When equal power, it is believed that the probability that there is interference on said one RB is very low, you can to think to be not present on said one RB The PDSCH of adjacent area is interfered.
Further, in a specific embodiment of the present invention, when above-mentioned first receives power and is unsatisfactory for much smaller than above-mentioned When the condition of full bandwidth mean power, device can receive power further according to above-mentioned first and above-mentioned adjacent area receives the opposite of power Magnitude relationship come judge on said one RB with the presence or absence of adjacent area PDSCH interfere.
In a specific embodiment of the present invention, power, full bandwidth mean power, adjacent area reception power are being received according to first Judge after being interfered with the presence or absence of adjacent area on said one RB with predetermined power thresholding, if it is judged that not deposited on said one RB It is interfered in adjacent area, device then terminates parameter blind examination flow in adjacent area on said one RB.
Further, in a specific embodiment of the present invention, dry if there is no the PDSCH of adjacent area on said one RB It disturbs, then there is no need to be carried out again to transmission mode, pre-coding matrix instruction, the number of plies, modulation system on said one RB for device And the parameters such as power back-off factor carry out blind detection operation.
Further, in a specific embodiment of the present invention, if it is judged that for there are adjacent areas on said one RB PDSCH is interfered, then device can continue to transmission mode, pre-coding matrix instruction, the number of plies, tune on said one RB The parameters such as mode and the power back-off factor processed carry out blind detection operation.
A kind of interference detection method provided in an embodiment of the present invention obtains the corresponding resource module RB of i-th of symbol In the reception signal of each subcarrier said one RB is calculated in i-th of symbol according to the reception signal of above-mentioned each subcarrier On first receive power；Wherein, i is more than or equal to 0 and less than the natural number for occupying symbolic number in a subframe；Obtain i-th Multiple the first of the corresponding whole RB of a symbol receive power, receive power according to above-mentioned multiple first, calculate on i-th of symbol Full bandwidth mean power；It is obtained per height from the reception signal of each subcarriers of the said one RB on i-th of symbol The neighbor received signal of carrier wave calculates said one RB in i-th of symbol according to the neighbor received signal of above-mentioned each subcarrier On adjacent area receive power；Power is received according to above-mentioned first, above-mentioned full bandwidth mean power, above-mentioned adjacent area receive power and pre- If power threshold, judge to interfere with the presence or absence of adjacent area on said one RB, and then judge whether carry out adjacent area on said one RB Parameter blind examination flow.It can be seen that a kind of interference detection method that the embodiment of the present invention proposes, can be on PRB by determining No there are the PDSCH of adjacent area interference, realize and carry out adjacent area parameter blind detection operation for the PRB interfered there are PDSCH, to reduce The signaling overheads of blind examination flow, and it is effectively improved the efficiency that interference is eliminated；Also, it implements simple and convenient, is convenient for Universal, the scope of application is wider.
Embodiment two
Based on embodiment one, Fig. 3 is a kind of implementation process schematic diagram for interference detection method that the embodiment of the present invention proposes Two, as shown in figure 3, in a specific embodiment of the present invention, judging to interfere with the presence or absence of adjacent area on said one RB, and then judge The method that adjacent area parameter blind examination flow whether is carried out on said one RB mainly includes the following steps that：
Step 104a, by receiving power and full bandwidth mean power progress scale operation to first, the first ratio is obtained.
In a specific embodiment of the present invention, device receives work(in obtain above-mentioned i-th of OFDM symbol, one RB first Rate PY(i, k), the corresponding full bandwidth mean power of i-th of symbolLater, power can be received to above-mentioned first Scale operation is carried out with above-mentioned full bandwidth mean power, obtains the first ratio.
If step 104b, the first ratio is less than or equal to preset absolute thresholding, judge to be not present on said one RB Adjacent area is interfered, and then is judged on said one RB without adjacent area parameter blind examination flow.
In a specific embodiment of the present invention, device receives power to above-mentioned first and above-mentioned full bandwidth mean power carries out Scale operation after obtaining the first ratio, is compared the first ratio and default absolute thresholding, when the first ratio is less than or equal to Default absolute door is prescribed a time limit, it is believed that there is no adjacent areas to interfere on said one RB, and then judge on said one RB not into Row adjacent area parameter blind examination flow.
Further, in a specific embodiment of the present invention, when default absolute thresholding value is 0.25, the first ratio is small The ratio that power and above-mentioned full bandwidth mean power are received in 0.25, i.e., above-mentioned first is less than 0.25, then can consider above-mentioned First, which receives power, is much smaller than above-mentioned full bandwidth mean power, that is to say, that the probability for generating interference is smaller, i.e. said one RB It is upper that there is no adjacent areas to interfere.
In a specific embodiment of the present invention, power, full bandwidth mean power, adjacent area reception power are being received according to first Judge after being interfered with the presence or absence of adjacent area on said one RB with predetermined power thresholding, if it is judged that not deposited on said one RB It is interfered in adjacent area, device then terminates parameter blind examination flow in adjacent area on said one RB.
If step 104c, the first ratio, which is more than, presets absolute thresholding, power is received according to first, adjacent area receives power And default relative threshold, it is interfered with the presence or absence of adjacent area on secondary judgement said one RB, and then secondary judgement said one RB On whether carry out adjacent area parameter blind examination flow.
In a specific embodiment of the present invention, after device obtains the first ratio, to the first ratio and absolute thresholding is preset It is compared, prescribes a time limit when the first ratio is more than default absolute door, then receive power according to first, adjacent area receives power and default Relative threshold is interfered with the presence or absence of adjacent area on secondary judgement said one RB, so it is secondary judge on said one RB whether into Row adjacent area parameter blind examination flow.
Further, in a specific embodiment of the present invention, it prescribes a time limit when the first ratio is more than default absolute door, it can not be true Determine to interfere with the presence or absence of adjacent area on said one RB, device then needs to receive power according to first, adjacent area receives power and pre- If relative threshold is judged again, so that it is determined that interfered with the presence or absence of adjacent area on said one RB, and then secondary judgement is above-mentioned Whether adjacent area parameter blind examination flow is carried out on one RB.
In conclusion in a specific embodiment of the present invention, 104a-104c, interference detecting apparatus can through the above steps To carry out scale operation by receiving power and full bandwidth mean power to first, obtain the first ratio, and by the first ratio with Preset absolute thresholding be compared, when the first ratio be less than or equal to preset absolute thresholding, then may determine that on said one RB There is no adjacent area interference, to by terminating adjacent area parameter blind detection operation, realize the signaling overheads for reducing blind examination flow, and have Improve to effect the efficiency that interference is eliminated.
Embodiment three
Based on embodiment two, Fig. 4 is a kind of implementation process schematic diagram for interference detection method that the embodiment of the present invention proposes Three, as shown in figure 4, in a specific embodiment of the present invention, judge method on said one RB with the presence or absence of adjacent area interference also Include the following steps：
Step 104c-1, power progress scale operation is received by receiving power and first to adjacent area, obtains the second ratio.
In a specific embodiment of the present invention, it prescribes a time limit when above-mentioned first ratio is more than default absolute door, device is needed to upper The adjacent area for stating the corresponding RB of i-th of symbol receives powerWith the of one RB of above-mentioned i-th of OFDM symbol One receives power PY(i, k) carries out scale operation, obtains the second ratio.
If step 104c-2, the second ratio is more than or equal to default relative threshold, judge exist on said one RB Adjacent area is interfered, and then judges to carry out adjacent area parameter blind examination flow on said one RB.
In a specific embodiment of the present invention, device receives power to above-mentioned adjacent area and above-mentioned first reception power compares Example operation is compared the second ratio and default relative threshold after obtaining the second ratio, when the second ratio is more than or equal in advance If when relative threshold, it is believed that there are adjacent area interference on said one RB, and then judge to carry out adjacent area on said one RB Parameter blind examination flow.
If step 104c-3, the second ratio is less than default relative threshold, judge that there is no neighbours on said one RB Area interferes, and then judges on said one RB without adjacent area parameter blind examination flow.
In a specific embodiment of the present invention, after device obtains the second ratio, to the second ratio and default relative threshold It is compared, when the second ratio is less than default relative threshold, it may be considered that there is no adjacent areas to interfere on said one RB, into And judge on said one RB without adjacent area parameter blind examination flow.
Further, in a specific embodiment of the present invention, when default relative threshold value is 0.5, the second ratio is small In 0.5, i.e., above-mentioned adjacent area receives power and the ratio of above-mentioned first reception power is less than 0.5, then can consider above-mentioned adjacent area It receives power and receives power much smaller than above-mentioned first, that is to say, that the probability for generating interference is smaller, i.e. is not deposited on said one RB It interferes, and then is judged on said one RB without adjacent area parameter blind examination flow in adjacent area.
In conclusion in a specific embodiment of the present invention, 104c-1 to 104c-3, Interference Detection fill through the above steps Power can be received and carry out scale operation by receiving power and first to adjacent area by setting, and obtain the second ratio, and by the second ratio It is compared with default relative threshold, presets relative threshold when the second ratio is less than, then may determine that on said one RB not There are adjacent area interference, to by terminating adjacent area parameter blind detection operation, realize the signaling overheads for reducing blind examination flow, and effectively Ground improves the efficiency that interference is eliminated.
Example IV
Based on embodiment one, Fig. 5 is a kind of implementation process schematic diagram for interference detection method that the embodiment of the present invention proposes Four, as shown in figure 5, in a specific embodiment of the present invention, device calculates a RB in the reception signal according to each subcarrier After first on i-th of symbol receives power, the method being detected to the PDSCH interference of adjacent area further includes following step Suddenly：
Step 201, the i-th+x symbols of acquisition corresponding first receive power, the i-th+x corresponding full bandwidths of symbol and are averaged Power and the corresponding adjacent area of the i-th+x symbols receive power；Wherein, i+x is more than or equal to 0 and to be less than occupancy symbol in a subframe The natural number of number, x are non-zero integer.
In a specific embodiment of the present invention, device can obtain the i-th+x according to the method for step 101 to step 103 Symbol corresponding first receives power, the i-th+x corresponding full bandwidth mean power of symbol and the i-th+x corresponding adjacent areas of symbol Receive power；Wherein, i+x is more than or equal to 0 and less than the natural number for occupying symbolic number in a subframe, and x is non-zero integer.
Further, in a specific embodiment of the present invention, in order to improve the accuracy of Interference Detection, device can utilize It is average to calculate the corresponding first reception power of the multiple and different symbols of acquisition, full bandwidth to the method for step 103 for above-mentioned steps 101 Power and adjacent area receive power.
Further, in a specific embodiment of the present invention, i+x indicates the position of OFDM symbol in a subframe, therefore, I+x is more than or equal to 0 and to be less than the natural number that symbolic number is occupied in a subframe, while i+x is not equal to i, so x is non-zero whole Number.For example, a subframe includes 14 symbols, then i+x is any one natural number in 0~13, for example, i-th of symbol can Think the 3rd symbol, the i-th+x symbols can be the 1st symbol, alternatively, the 4th symbol, alternatively, the 7th symbol.
In a specific embodiment of the present invention, it is preferable that in order to increase the number of samples of calculating, the i-th+x symbols should be chosen Character position not comprising pilot tone.
It should be noted that in a specific embodiment of the present invention, above-mentioned multiple and different symbols are mutually same sub- frame In certain several symbol.For example, for n-th of subframe, i-th of the symbol obtained in n-th of subframe can be calculated separately and corresponded to First receive power, full bandwidth mean power and adjacent area receive power, the i-th -3 symbols in n-th of subframe are corresponding First, which receives the i-th+5 symbols that power, full bandwidth mean power and adjacent area receive in power and n-th of subframe, corresponds to First receive power, full bandwidth mean power and adjacent area receive power.Preferably, in a specific embodiment of the present invention, The symbol that at least three can be selected different in n-th of subframe is calculated.
Step 202, to said one RB i-th of symbol and the i-th+x symbols corresponding multiple first receive power into Row accumulation calculating obtains the cumulative reception power of said one RB.
In a specific embodiment of the present invention, device calculates through the above steps 101 and obtains said one RB at i-th After symbol and the i-th+x symbols corresponding multiple first receive power, above-mentioned multiple first reception power can be tired out Add calculating, to obtain the cumulative reception power of said one RB.
Further, in a specific embodiment of the present invention, if i-th of OFDM symbol corresponds to respectively in n-th of subframe K-th of RB first receive power be PY(i, k) obtains n-th of subframe corresponding the then can be calculated according to formula (4) The cumulative reception power P of k RBY(n, k), it is as follows：
Wherein, L indicates to select L OFDM symbol in n-th of subframe, i.e. i-th of symbol and the i-th+x symbols include i0、 i1、…iL-1。
Further, in a specific embodiment of the present invention, above-mentioned cumulative reception power can be to i-th of symbol, the I-3 symbol, multiple symbols such as the i-th+5 symbols corresponding multiple first receive power and carry out accumulation calculating acquisition.
Step 203 carries out accumulation calculating to i-th of symbol and the corresponding multiple full bandwidth mean powers of the i-th+x symbols, Obtain the full bandwidth mean power that adds up.
In a specific embodiment of the present invention, device calculates through the above steps 102 and obtains i-th of symbol and the i-th+x After the corresponding multiple full bandwidth mean powers of a symbol, accumulation calculating can be carried out to above-mentioned full bandwidth mean power, to Obtain the full bandwidth mean power that adds up.
Further, in a specific embodiment of the present invention, if i-th of OFDM symbol is corresponding complete in n-th of subframe Bandwidth mean power isIt can so be calculated according to formula (5) and obtain the corresponding full band that adds up of n-th of subframe Wide mean powerIt is as follows：
Further, in a specific embodiment of the present invention, above-mentioned cumulative full bandwidth mean power can be to be accorded with to i-th Number, the i-th -3 symbols, the corresponding multiple full bandwidth mean powers of multiple symbols such as the i-th+5 symbols carry out accumulation calculating acquisitions 's.
Step 204, to said one RB the corresponding multiple adjacent areas of i-th of symbol and the i-th+x symbols receive power into Row accumulation calculating, the cumulative adjacent area for obtaining said one RB receive power.
In a specific embodiment of the present invention, device calculates through the above steps 103 and obtains said one RB at i-th After symbol and the corresponding multiple adjacent areas of the i-th+x symbols receive power, power can be received to above-mentioned adjacent area and carries out cumulative meter It calculates, the cumulative adjacent area to obtain said one RB receives power.
Further, in a specific embodiment of the present invention, if the corresponding kth of i-th of OFDM symbol in n-th of subframe The adjacent area of a RB receives powerIt can so be calculated according to formula (6) and obtain the corresponding kth of n-th of subframe The cumulative adjacent area of a RB receives powerIt is as follows：
Further, in a specific embodiment of the present invention, it can be to be accorded with to i-th that above-mentioned cumulative adjacent area, which receives power, Number, the i-th -3 symbols, the corresponding multiple adjacent areas of multiple symbols such as the i-th+5 symbols receive power and carry out accumulation calculating acquisitions.
Step 205 receives power and default work(according to cumulative reception power, cumulative full bandwidth mean power, cumulative adjacent area Rate thresholding judges to interfere with the presence or absence of adjacent area on said one RB, and then judges whether carry out adjacent area parameter on said one RB Blind examination flow.
In a specific embodiment of the present invention, device obtains i-th of symbol and the i-th+x corresponding cumulative reception work(of symbol It, can be according to cumulative reception power P after rate, cumulative full bandwidth mean power and cumulative adjacent area receive powerYIt is (n, k), tired Add full bandwidth mean powerCumulative adjacent area receives powerJudge with predetermined power thresholding above-mentioned It is interfered with the presence or absence of adjacent area on one RB, and then judges whether carry out adjacent area parameter blind examination flow on said one RB.
Further, in a specific embodiment of the present invention, device according to it is cumulative receive power, cumulative full bandwidth is averaged work( Rate, cumulative adjacent area receive power and predetermined power thresholding judges to interfere with the presence or absence of adjacent area on said one RB, can improve dry Disturb the accuracy of detection.
Further, predetermined power thresholding may include presetting absolute thresholding and default relative threshold, wherein default absolute The value of thresholding and default relative threshold can configure, it is preferable that in the specific embodiment of the invention, default absolute door is arranged and is limited to 0.25, it is 0.5 to preset relative threshold.
A kind of interference detection method provided in an embodiment of the present invention, the corresponding first reception power of the i-th+x symbols of acquisition, I-th+x corresponding full bandwidth the mean powers of symbol and the corresponding adjacent area of the i-th+x symbols receive power；Wherein, i+x be more than Equal to 0 and less than the natural number for occupying symbolic number in a subframe, x is non-zero integer；To said one RB in i-th symbol and I-th+x symbols corresponding multiple first receive power and carry out accumulation calculating, obtain the cumulative reception power of said one RB；It is right I-th of symbol and the corresponding multiple full bandwidth mean powers of the i-th+x symbols carry out accumulation calculating, and it is average to obtain the full bandwidth that adds up Power；Is received by power and carries out accumulation calculating in i-th of symbol and the corresponding multiple adjacent areas of the i-th+x symbols by said one RB, The cumulative adjacent area for obtaining said one RB receives power；According to cumulative reception power, cumulative full bandwidth mean power, cumulative adjacent area Power and predetermined power thresholding is received to judge with the presence or absence of adjacent area interference on said one RB, so judge be on said one RB No progress adjacent area parameter blind examination flow, to improve the accuracy of interference detection results.
Embodiment five
Based on example IV, Fig. 6 is a kind of implementation process schematic diagram for interference detection method that the embodiment of the present invention proposes Five, as shown in fig. 6, in a specific embodiment of the present invention, judging on said one RB with the presence or absence of the method master of adjacent area interference Include the following steps：
Step 205a, by receiving power and cumulative full bandwidth mean power progress scale operation to cumulative, third is obtained Ratio.
In a specific embodiment of the present invention, device is in the cumulative reception for obtaining corresponding k-th of the RB of above-mentioned n-th of subframe Power PY(n, k), the corresponding cumulative full bandwidth mean power of n-th of subframeLater, above-mentioned add up can be connect It receives power and above-mentioned cumulative full bandwidth mean power carries out scale operation, obtain third ratio.
If step 205b, third ratio is less than or equal to preset absolute thresholding, judge to be not present on said one RB Adjacent area is interfered, and then is judged on said one RB without adjacent area parameter blind examination flow.
In a specific embodiment of the present invention, device is to above-mentioned cumulative reception power and above-mentioned cumulative full bandwidth mean power Scale operation is carried out, after obtaining third ratio, third ratio and default absolute thresholding are compared, when third ratio is less than It prescribes a time limit equal to default absolute door, it is believed that there is no adjacent areas to interfere on corresponding k-th of the RB of above-mentioned n-th of subframe, and then sentences Break and on corresponding k-th of the RB of above-mentioned n-th of subframe without adjacent area parameter blind examination flow.
Further, in a specific embodiment of the present invention, when default absolute thresholding value is 0.25, third ratio is small In 0.25, i.e., the above-mentioned cumulative ratio for receiving power and above-mentioned cumulative full bandwidth mean power is less than 0.25, then can consider Above-mentioned cumulative reception power is much smaller than above-mentioned cumulative full bandwidth mean power, that is to say, that above-mentioned n-th of subframe is k-th corresponding The probability that interference is generated on RB is smaller, i.e., there is no adjacent areas to interfere on corresponding k-th of the RB of above-mentioned n-th of subframe.
If step 205c, third ratio is more than default absolute thresholding, power, cumulative adjacent area reception are received according to cumulative Power and default relative threshold are interfered with the presence or absence of adjacent area on secondary judgement said one RB, and then secondary judge above-mentioned one Whether adjacent area parameter blind examination flow is carried out on a RB.
In a specific embodiment of the present invention, after device obtains third ratio, to third ratio and absolute thresholding is preset Be compared, prescribe a time limit when third ratio is more than default absolute door, then according to it is cumulative receive power, cumulative adjacent area receives power and Default relative threshold judges to interfere with the presence or absence of adjacent area on corresponding k-th of the RB of above-mentioned n-th of subframe, and then in secondary judgement It states and whether carries out adjacent area parameter blind examination flow on corresponding k-th of the RB of n-th of subframe.
Further, in a specific embodiment of the present invention, it prescribes a time limit when third ratio is more than default absolute door, it can not be true Determine to whether there is adjacent area interference on corresponding k-th of the RB of above-mentioned n-th of subframe, device then needs according to cumulative reception power, tires out Adjacent area reception power and default relative threshold is added to be judged again, so that it is determined that corresponding k-th of the RB of above-mentioned n-th of subframe It is upper to be interfered with the presence or absence of adjacent area, so it is secondary judge whether to carry out adjacent area parameter on corresponding k-th of the RB of above-mentioned n-th of subframe it is blind Examine flow.
In conclusion in a specific embodiment of the present invention, 205a-205c, interference detecting apparatus can through the above steps By receiving power and cumulative full bandwidth mean power carries out scale operation to cumulative, to obtain third ratio, and by third ratio Value is compared with default absolute thresholding, when third ratio be less than or equal to preset absolute thresholding, then may determine that above-mentioned n-th There is no adjacent areas to interfere on corresponding k-th of the RB of subframe, to which by terminating adjacent area parameter blind detection operation, realization reduces blind examination The signaling overheads of flow, and it is effectively improved the efficiency that interference is eliminated.
Embodiment six
Based on embodiment five, Fig. 7 is a kind of implementation process schematic diagram for interference detection method that the embodiment of the present invention proposes Six, as shown in fig. 7, in a specific embodiment of the present invention, judge method on said one RB with the presence or absence of adjacent area interference also Include the following steps：
Step 205c-1, by receiving power and cumulative reception power progress scale operation to cumulative adjacent area, the 4th is obtained Ratio.
In a specific embodiment of the present invention, it prescribes a time limit when above-mentioned third ratio is more than default absolute door, device is needed to upper The cumulative adjacent area for stating corresponding k-th of the RB of n-th of subframe receives powerKth corresponding with above-mentioned n-th of subframe The cumulative reception power P of a RBY(n, k) carries out scale operation, obtains the 4th ratio.
If step 205c-2, the 4th ratio is more than or equal to default relative threshold, judge exist on said one RB Adjacent area is interfered, and then judges to carry out adjacent area parameter blind examination flow on said one RB.
In a specific embodiment of the present invention, device to above-mentioned cumulative adjacent area receive power and above-mentioned cumulative reception power into Row scale operation, obtain the 4th ratio after, the 4th ratio and default relative threshold are compared, when the 4th ratio be more than etc. When default relative threshold, it is believed that there are adjacent area interference on corresponding k-th of the RB of above-mentioned n-th of subframe, and then judge Adjacent area parameter blind examination flow is carried out on corresponding k-th of the RB of above-mentioned n-th of subframe.
If step 205c-3, the 4th ratio is less than default relative threshold, judge that there is no neighbours on said one RB Area interferes, and then judges on said one RB without adjacent area parameter blind examination flow.
In a specific embodiment of the present invention, after device obtains the 4th ratio, to the 4th ratio and default relative threshold It is compared, when the 4th ratio is less than default relative threshold, it may be considered that on corresponding k-th of the RB of above-mentioned n-th of subframe There is no adjacent area interference, and then judge on corresponding k-th of the RB of above-mentioned n-th of subframe without adjacent area parameter blind examination flow.
Further, in a specific embodiment of the present invention, when default relative threshold value is 0.5, the 4th ratio is small In 0.5, i.e., above-mentioned cumulative adjacent area receives power and the above-mentioned cumulative ratio for receiving power is less than 0.5, then can consider above-mentioned Cumulative adjacent area receives power and is much smaller than above-mentioned cumulative reception power, that is to say, that the probability for generating interference is smaller, i.e., n-th above-mentioned There is no adjacent areas to interfere on corresponding k-th of the RB of subframe, so judge on corresponding k-th of the RB of above-mentioned n-th of subframe not into Row adjacent area parameter blind examination flow.
In conclusion in a specific embodiment of the present invention, 205c-1 to 205c-3, Interference Detection fill through the above steps The 4th ratio can be obtained by receiving power to cumulative adjacent area and the cumulative power that receives carries out scale operation by setting, and by the 4th Ratio is compared with default relative threshold, and relative threshold is preset when the 4th ratio is less than, then may determine that above-mentioned n-th of son There is no adjacent areas to interfere on corresponding k-th of the RB of frame, to which by terminating adjacent area parameter blind detection operation, realization reduces blind examination stream The signaling overheads of journey, and it is effectively improved the efficiency that interference is eliminated.
Based on example IV to the method for embodiment six, Fig. 8 is to be deposited using present invention detection adjacent area interference under NAICS patterns With ideal detection performance comparison diagram, as shown in Figure 8, it is assumed that LTE-A TDD systems, transmission mode TM4, and INR1= 13.92dB, using technical solution proposed by the present invention, there is the simulation performance of detection and adjacent area ideal Interference Detection in adjacent area interference It is almost the same, it can be considered that the interference detection method of the present invention is with obvious effects.And by determining on PRB with the presence or absence of neighbour The PDSCH in area is interfered, and can terminate adjacent area parameter blind detection operation when there is no the PDSCH of adjacent area is interfered, and is realized for presence The PRB of PDSCH interference carries out blind detection operation, to reduce the signaling overheads of blind examination flow, and is effectively improved interference and disappears The efficiency removed.
Embodiment seven
Fig. 9 is a kind of composed structure schematic diagram one for interference detecting apparatus that the embodiment of the present invention proposes, as shown in figure 9, In a specific embodiment of the present invention, interference detecting apparatus 1 includes acquiring unit 11, computing unit 12, judging unit 13, In,
Acquiring unit 11, the reception letter for obtaining each subcarrier in the corresponding resource module RB of i-th of symbol Number；Wherein, i is more than or equal to 0 and less than the natural number for occupying symbolic number in a subframe；And it obtains i-th of symbol and corresponds to Whole RB it is multiple first receive power；And in the reception signal of each subcarrier from a RB on i-th of symbol Obtain the neighbor received signal of each subcarrier.
Computing unit 12 calculates first of a RB on i-th of symbol for the reception signal according to each subcarrier Receive power；And power is received according to multiple first, calculate the full bandwidth mean power on i-th of symbol；And according to every The neighbor received signal of a subcarrier calculates adjacent areas of the RB on i-th of symbol and receives power.
Judging unit 13, for receiving power, full bandwidth mean power, adjacent area reception power and predetermined power according to first Thresholding judges to interfere with the presence or absence of adjacent area on said one RB, and then judges adjacent area parameter blind examination whether is carried out on said one RB Flow.
In a specific embodiment of the present invention, further, above-mentioned predetermined power thresholding includes presetting absolute thresholding and pre- If relative threshold.
Based on above-mentioned Fig. 9, Figure 10 is a kind of composed structure schematic diagram for interference detecting apparatus that the embodiment of the present invention proposes Two, as shown in Figure 10, in a specific embodiment of the present invention, interference detecting apparatus 1 further includes blind examination unit 14.
Computing unit 12 is additionally operable to, by receiving power and full bandwidth mean power progress scale operation to first, obtain First ratio.
Judging unit 13 judges said one if being less than or equal to preset absolute thresholding specifically for the first ratio There is no adjacent areas to interfere on RB；And if the first ratio, which is more than, presets absolute thresholding, connect according to the first reception power, adjacent area Power and default relative threshold are received, is interfered with the presence or absence of adjacent area on secondary judgement said one RB, and then secondary judgement is above-mentioned Whether adjacent area parameter blind examination flow is carried out on one RB.
Blind examination unit 14, for when judging to interfere there is no adjacent area on said one RB, terminating adjacent area parameter blind examination Flow.
In a specific embodiment of the present invention, further, computing unit 12, be additionally operable to by adjacent area receive power and First, which receives power, carries out scale operation, obtains the second ratio.
Judging unit 13 judges above-mentioned one if being specifically additionally operable to the second ratio is more than or equal to default relative threshold There are adjacent area interference on a RB；And if the second ratio is less than default relative threshold, judge not deposit on said one RB It is interfered in adjacent area.
Blind examination unit 14 is additionally operable to when judging to carry out on said one RB there are when the interference of adjacent area on said one RB Adjacent area parameter blind examination flow.
In a specific embodiment of the present invention, further, acquiring unit 11 are additionally operable to the i-th+x symbols of acquisition and correspond to First receive power, the i-th+x corresponding full bandwidth mean powers of symbol and the corresponding adjacent area of the i-th+x symbols and receive work( Rate；Wherein, i+x is more than or equal to 0 and less than the natural number for occupying symbolic number in a subframe, and x is non-zero integer.
Computing unit 12 is additionally operable to meet said one RB in i-th of symbol and the i-th+x symbols corresponding multiple first It receives power and carries out accumulation calculating, obtain the cumulative reception power of said one RB；I-th of symbol and the i-th+x symbols are corresponded to Multiple full bandwidth mean powers carry out accumulation calculating, obtain the full bandwidth mean power of adding up；Said one RB is accorded at i-th Number and the corresponding multiple adjacent areas of the i-th+x symbols receive power and carry out accumulation calculatings, the cumulative adjacent area for obtaining said one RB connects Receive power.
Judging unit 13, for according to it is cumulative receive power, cumulative full bandwidth mean power, cumulative adjacent area receive power and Predetermined power thresholding judges to interfere with the presence or absence of adjacent area on said one RB, and then judges whether carry out neighbour on said one RB Area's parameter blind examination flow.
In a specific embodiment of the present invention, further, predetermined power thresholding includes presetting absolute thresholding and default phase To thresholding.
As shown in Figure 10 above, in a specific embodiment of the present invention, interference detecting apparatus 1 further includes blind examination unit 14.
Computing unit 12 is additionally operable to by receiving power and cumulative full bandwidth mean power progress scale operation to cumulative, Obtain third ratio.
Judging unit 13 is less than or equal to preset absolute thresholding, judges above-mentioned one if being specifically additionally operable to third ratio There is no adjacent areas to interfere on a RB；And if third ratio according to cumulative reception power, adds up more than absolute thresholding is preset Adjacent area receives power and default relative threshold, with the presence or absence of adjacent area interference on secondary judgements said one RB, and then secondary sentences Adjacent area parameter blind examination flow whether is carried out on disconnected said one RB.
In a specific embodiment of the present invention, further, computing unit 12 are additionally operable to by receiving work(to cumulative adjacent area Rate and the cumulative power that receives carry out scale operation, obtain the 4th ratio.
Judging unit 13 judges above-mentioned one if being specifically additionally operable to the 4th ratio is more than or equal to default relative threshold There are adjacent area interference on a RB；And if the 4th ratio is less than default relative threshold, judge not deposit on said one RB It is interfered in adjacent area.
Blind examination unit 14 is additionally operable to when judging to carry out on said one RB there are when the interference of adjacent area on said one RB Adjacent area parameter blind examination flow.
Acquiring unit 11 provided in an embodiment of the present invention, computing unit 12, judging unit 13 and blind examination unit 14, all may be used To be realized in the form of program code by executing corresponding function by the processor in interference detecting apparatus；Certainly can also pass through Specific logic circuit is realized；During specific embodiment, processor can be central processing unit (CPU), microprocessor (MPU), digital signal processor (DSP) or field programmable gate array (FPGA) etc., acquiring unit 11 is realized by receiver, should Receiver can be by filter, amplifier, the compositions such as A/D converter.Above-mentioned interference detecting apparatus further includes：Memory, this is deposited Reservoir can be the storage device with physical form, such as random such as memory bar, TF card, or the circuit with store function Access memory (RAM), FIFO reservoirs etc..
A kind of interference detecting apparatus provided by the invention obtains each in the corresponding resource module RB of i-th of symbol The reception signal of subcarrier calculates the of said one RB on i-th of symbol according to the reception signal of above-mentioned each subcarrier One receives power；Wherein, i is more than or equal to 0 and less than the natural number for occupying symbolic number in a subframe；Obtain i-th of symbol Multiple the first of corresponding whole RB receive power, receive power according to above-mentioned multiple first, calculate the full band on i-th of symbol Wide mean power；Each subcarrier is obtained from the reception signal of each subcarriers of the said one RB on i-th of symbol Neighbor received signal calculates neighbours of the said one RB on i-th of symbol according to the neighbor received signal of above-mentioned each subcarrier Area receives power；Power, above-mentioned full bandwidth mean power, above-mentioned adjacent area reception power and predetermined power are received according to above-mentioned first Thresholding judges to interfere with the presence or absence of adjacent area on said one RB, and then judges whether to carry out adjacent area parameter on said one RB blind Examine flow.It can be seen that a kind of interference detecting apparatus that the embodiment of the present invention proposes, can be whether there is by determining on PRB The PDSCH of adjacent area is interfered, and is realized and is carried out adjacent area parameter blind detection operation for the PRB interfered there are PDSCH, to reduce blind examination The signaling overheads of flow, and it is effectively improved the efficiency that interference is eliminated；Also, it implements simple and convenient, convenient for universal, fits It is wider with range.
It should be understood by those skilled in the art that, the embodiment of the present invention can be provided as method, system or computer program Product.Therefore, the shape of hardware embodiment, software implementation or embodiment combining software and hardware aspects can be used in the present invention Formula.Moreover, the present invention can be used can use storage in the computer that one or more wherein includes computer usable program code The form for the computer program product implemented on medium (including but not limited to magnetic disk storage and optical memory etc.).
The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product Figure and/or block diagram describe.It should be understood that can be realized by computer program instructions every first-class in flowchart and/or the block diagram The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided Instruct the processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce A raw machine so that the instruction executed by computer or the processor of other programmable data processing devices is generated for real The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one The step of function of being specified in a box or multiple boxes.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.

Claims (12)

1. a kind of interference detection method, which is characterized in that the method includes：
The reception signal for obtaining each subcarrier in the corresponding resource module RB of i-th of symbol is carried according to described per height The reception signal of wave calculates first reception power of one RB on i-th of symbol；Wherein, i is more than or equal to 0 And less than the natural number for occupying symbolic number in a subframe；
Obtain the corresponding whole RB of i-th of symbol multiple first receive power, receive power according to the multiple first, calculate Full bandwidth mean power on i-th of symbol；
Each subcarrier is obtained from the reception signal of each subcarriers of one RB on i-th of symbol Neighbor received signal calculates one RB on i-th of symbol according to the neighbor received signal of each subcarrier Adjacent area receive power；
Power, the full bandwidth mean power, adjacent area reception power and predetermined power thresholding are received according to described first, is sentenced It is interfered with the presence or absence of adjacent area on disconnected one RB, and then judges whether carry out adjacent area parameter blind examination flow on one RB.
2. according to the method described in claim 1, it is characterized in that, the predetermined power thresholding is including default absolute thresholding and in advance It is described to receive power, the full bandwidth mean power, adjacent area reception power according to described first and preset if relative threshold Power threshold judges to interfere with the presence or absence of adjacent area on one RB, and then judges whether carry out adjacent area ginseng on one RB Number blind examination flow, including：
By receiving power and full bandwidth mean power progress scale operation to described first, the first ratio is obtained；
If first ratio is less than or equal to the default absolute thresholding, judge that the neighbour is not present on one RB Area interferes, and then judges on one RB without the adjacent area parameter blind examination flow；
If first ratio is more than the default absolute thresholding, power is received according to described first, the adjacent area receives Power and the default relative threshold, it is secondary to judge to interfere with the presence or absence of the adjacent area on one RB, and then secondary sentence The adjacent area parameter blind examination flow whether is carried out on disconnected one RB.
3. according to the method described in claim 2, it is characterized in that, described connect according to the first reception power, the adjacent area Power and the default relative threshold are received, it is secondary to judge to interfere with the presence or absence of the adjacent area on one RB and then secondary Judge the adjacent area parameter blind examination flow whether is carried out on one RB, including：
Power progress scale operation is received by receiving power and described first to the adjacent area, obtains the second ratio；
If second ratio is more than or equal to the default relative threshold, judge that there are the adjacent areas on one RB Interference, and then judge to carry out the adjacent area parameter blind examination flow on one RB；
If second ratio is less than the default relative threshold, judge that there is no the adjacent areas to do on one RB It disturbs, and then judges on one RB without the adjacent area parameter blind examination flow.
4. according to the method described in claim 1, it is characterized in that, the reception signal according to each subcarrier, meter After calculating the first reception power of one RB on i-th of symbol, the method further includes：
It obtains the i-th+x symbols corresponding first and receives power, the i-th+x corresponding full bandwidth mean power of symbol and the i-th+x The corresponding adjacent area of a symbol receives power；Wherein, i+x is more than or equal to 0 and less than the nature for occupying symbolic number in a subframe Number, x are non-zero integer；
One RB is tired out in the corresponding multiple first reception power of i-th of symbol and the i-th+x symbols Add calculating, obtains the cumulative reception power of one RB；
Accumulation calculating is carried out to i-th of symbol and the corresponding multiple full bandwidth mean powers of the i-th+x symbols, is obtained Cumulative full bandwidth mean power；
Is received by power and is tired out in i-th of symbol and the corresponding multiple adjacent areas of the i-th+x symbols by one RB Add calculating, the cumulative adjacent area for obtaining one RB receives power；
Power and described pre- is received according to the cumulative reception power, the cumulative full bandwidth mean power, the cumulative adjacent area If power threshold, judge to interfere with the presence or absence of adjacent area on one RB, and then judge whether carry out adjacent area on one RB Parameter blind examination flow.
5. according to the method described in claim 4, it is characterized in that, the predetermined power thresholding is including default absolute thresholding and in advance It is described that work(is received according to the cumulative reception power, the cumulative full bandwidth mean power, the cumulative adjacent area if relative threshold Rate and the predetermined power thresholding, judge on one RB with the presence or absence of adjacent area interfere, and then judge be on one RB No progress adjacent area parameter blind examination flow, including：
By carrying out scale operation to the cumulative reception power and the cumulative full bandwidth mean power, third ratio is obtained；
If the third ratio is less than or equal to the default absolute thresholding, judge that the neighbour is not present on one RB Area interferes, and then judges on one RB without the adjacent area parameter blind examination flow；
If the third ratio is more than the default absolute thresholding, according to the cumulative reception power, the cumulative adjacent area Power and the default relative threshold are received, it is secondary to judge to interfere with the presence or absence of the adjacent area on one RB, and then two It is secondary to judge the adjacent area parameter blind examination flow whether is carried out on one RB.
6. according to the method described in claim 5, it is characterized in that, described according to the cumulative reception power, the cumulative neighbour Area receives power and the default relative threshold, secondary to judge to interfere with the presence or absence of the adjacent area on one RB, in turn It is secondary to judge the adjacent area parameter blind examination flow whether is carried out on one RB, including：
By receiving power and the cumulative reception power progress scale operation to the cumulative adjacent area, the 4th ratio is obtained；
If the 4th ratio is more than or equal to the default relative threshold, judge that there are the adjacent areas on one RB Interference, and then judge to carry out the adjacent area parameter blind examination flow on one RB；
If the 4th ratio is less than the default relative threshold, judge that there is no the adjacent areas to do on one RB It disturbs, and then judges on one RB without the adjacent area parameter blind examination flow.
7. a kind of interference detecting apparatus, which is characterized in that described device includes acquiring unit, computing unit, judging unit,
The acquiring unit, the reception signal for obtaining each subcarrier in the corresponding resource module RB of i-th of symbol； Wherein, i is more than or equal to 0 and less than the natural number for occupying symbolic number in a subframe；And i-th of symbol of acquisition is corresponding complete Multiple the first of portion RB receive power；And the reception letter of each subcarrier from one RB on i-th of symbol The neighbor received signal of each subcarrier is obtained in number；
The computing unit calculates one RB and is accorded at described i-th for the reception signal according to each subcarrier First on number receives power；And power is received according to the multiple first, the full bandwidth calculated on i-th of symbol is flat Equal power；And the neighbor received signal according to each subcarrier, one RB is calculated on i-th of symbol Adjacent area receives power；
The judging unit, for receiving power, the full bandwidth mean power, adjacent area reception power according to described first With predetermined power thresholding, judge to interfere with the presence or absence of adjacent area on one RB, and then judge whether carry out on one RB Adjacent area parameter blind examination flow.
8. device according to claim 7, which is characterized in that the predetermined power thresholding is including default absolute thresholding and in advance If relative threshold, the interference detecting apparatus further includes blind examination unit,
The computing unit is additionally operable to by receiving power and full bandwidth mean power progress ratio fortune to described first It calculates, obtains the first ratio；
The judging unit judges institute if being less than or equal to the default absolute thresholding specifically for first ratio It states and adjacent area interference is not present on a RB；And if first ratio is more than the default absolute thresholding, basis Described first receives power, the adjacent area receives power and the default relative threshold, is on the secondary one RB of judgement It is no there are adjacent area interference, and then secondary judge the adjacent area parameter blind examination flow whether is carried out on one RB；
The blind examination unit, for when judging to interfere there is no the adjacent area on one RB, terminating the adjacent area ginseng Number blind examination flow.
9. device according to claim 8, which is characterized in that
The computing unit is additionally operable to receive power progress scale operation by receiving power and described first to the adjacent area, Obtain the second ratio；
The judging unit is judged if being specifically additionally operable to second ratio is more than or equal to the default relative threshold There are adjacent area interference on one RB；And if second ratio is less than the default relative threshold, judge Go out on one RB that the adjacent area is not present and interferes；
The blind examination unit is additionally operable to when judging to interfere there are the adjacent area on one RB, and one RB is enterprising The row adjacent area parameter blind examination flow.
10. device according to claim 7, which is characterized in that
The acquiring unit is additionally operable to the reception signal according to each subcarrier, calculates one RB described After first on i-th of symbol receives power, obtains the i-th+x symbols corresponding first and receive power, the i-th+x symbol pair The full bandwidth mean power answered and the corresponding adjacent area of the i-th+x symbols receive power；Wherein, i+x is more than or equal to 0 and to be less than one The natural number of symbolic number is occupied in a subframe, x is non-zero integer；
The computing unit is additionally operable to corresponding multiple in i-th of symbol and the i-th+x symbols to one RB First, which receives power, carries out accumulation calculating, obtains the cumulative reception power of one RB；To i-th of symbol and described The corresponding multiple full bandwidth mean powers of i+x symbol carry out accumulation calculating, obtain the full bandwidth mean power that adds up；To described one A RB receives power and carries out accumulation calculating in i-th of symbol and the corresponding multiple adjacent areas of the i-th+x symbols, obtains institute The cumulative adjacent area for stating a RB receives power；
The judging unit, for according to the cumulative reception power, the cumulative full bandwidth mean power, the cumulative adjacent area Power and the predetermined power thresholding are received, judges to interfere with the presence or absence of adjacent area on one RB, and then judge one Whether adjacent area parameter blind examination flow is carried out on RB.
11. device according to claim 10, which is characterized in that the predetermined power thresholding include preset absolute thresholding and Default relative threshold, the interference detecting apparatus further includes blind examination unit,
The computing unit is additionally operable to by carrying out ratio to the cumulative reception power and the cumulative full bandwidth mean power Operation obtains third ratio；
The judging unit is judged if being specifically additionally operable to the third ratio is less than or equal to the default absolute thresholding There is no the adjacent areas to interfere on one RB；And if the third ratio is more than the default absolute thresholding, root Power and the default relative threshold are received according to the cumulative reception power, the cumulative adjacent area, secondary judgement is one It is interfered with the presence or absence of the adjacent area on RB, and then secondary judges whether carry out adjacent area parameter blind examination flow on one RB；
The blind examination unit, for when judging on one RB there is no when the interference of the adjacent area, on one RB not Carry out the adjacent area parameter blind examination flow.
12. according to the devices described in claim 11, which is characterized in that
The computing unit is additionally operable to by receiving power and the cumulative reception power progress ratio fortune to the cumulative adjacent area It calculates, obtains the 4th ratio；
The judging unit is judged if being specifically additionally operable to the 4th ratio is more than or equal to the default relative threshold There are adjacent area interference on one RB；And if the 4th ratio is less than the default relative threshold, judge Go out on one RB that the adjacent area is not present and interferes；
The blind examination unit is additionally operable to when judging to interfere there are the adjacent area on one RB, and one RB is enterprising The row adjacent area parameter blind examination flow.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103701744A (en) * 2012-09-27 2014-04-02 普天信息技术研究院有限公司 Interference detection method and device
CN104904259A (en) * 2012-11-02 2015-09-09 瑞典爱立信有限公司 Methods of obtaining measurements in the presence of strong and/or highly varying interference
CN105519019A (en) * 2013-05-27 2016-04-20 华为技术有限公司 Method and devie for detecting interference singal
WO2016163811A1 (en) * 2015-04-10 2016-10-13 Samsung Electronics Co., Ltd. Interference reporting

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103701744A (en) * 2012-09-27 2014-04-02 普天信息技术研究院有限公司 Interference detection method and device
CN104904259A (en) * 2012-11-02 2015-09-09 瑞典爱立信有限公司 Methods of obtaining measurements in the presence of strong and/or highly varying interference
CN105519019A (en) * 2013-05-27 2016-04-20 华为技术有限公司 Method and devie for detecting interference singal
WO2016163811A1 (en) * 2015-04-10 2016-10-13 Samsung Electronics Co., Ltd. Interference reporting

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