CN105828349B

CN105828349B - A kind of far-end interference detection method and device based on TD-LTE system

Info

Publication number: CN105828349B
Application number: CN201510002283.8A
Authority: CN
Inventors: 徐晓东; 李晓卡
Original assignee: China Mobile Communications Group Co Ltd
Current assignee: China Mobile Communications Group Co Ltd
Priority date: 2015-01-04
Filing date: 2015-01-04
Publication date: 2019-04-23
Anticipated expiration: 2035-01-04
Also published as: CN105828349A

Abstract

The present invention provides a kind of far-end interference detection method and device based on TD-LTE system; wherein; this method comprises: far-end interference detection device detects the intensity for the interference signal that non-downlink character position is subject to; the non-downlink character position includes protecting time slot, uplink pilot time slot and uplink symbol in sub-frame of uplink and being configured to downlink symbol transmitting position; but downlink does not send the position of symbol actually, which is received by the corresponding disturbed base station of the far-end interference detection device；Far-end interference detection device judges whether the intensity of the interference signal reduces with the increase of the positional distance between non-downlink character position and transfer point, which refers to that base station down sends the time point for turning uplink receiving；If so, far-end interference detection device determines disturbed base station by distally applying the interference for disturbing base station.The solution of the present invention can accurate detection whether go out base station by far-end interference, to further determine that distal end applies and disturbs base station information.

Description

A kind of far-end interference detection method and device based on TD-LTE system

Technical field

The present invention relates to fields of communication technology, more particularly to a kind of far-end interference detection method based on TD-LTE system And device.

Background technique

Existing far-end interference detection technique has the drawback that

The mode that far-end interference detection is carried out according to " hangover " feature of so-called far-end interference, in actual implementation process Exploitativeness is not had, as shown in Figure 1, it is assumed that propagation distance is that applying for 514.2km and 535.6km is disturbed base station while being brought pair The interference of disturbed base station differs only by 0.3dB or so by the interference strength that two adjacent symbol detections of sub-frame of uplink are subject to, The interference difference of 0.3dB makes do not have exploitativeness according to hangover detection.

And in the scene that actual far-end interference occurs, " hangover " feature is not obvious, if carried out according to hangover feature Judge far-end interference, it will there are higher error detection probability.

Summary of the invention

The far-end interference detection method and device based on TD-LTE system that the object of the present invention is to provide a kind of, are able to solve Far-end interference detection at present is not examined and the bigger problem of omission factor.

In order to solve the above-mentioned technical problem, implementation of the invention provides a kind of far-end interference detection based on TD-LTE system Method, wherein include:

Far-end interference detection device detects the intensity for the interference signal that non-downlink character position is subject to, the non-downlink Transmitting character position includes protecting time slot, uplink pilot time slot and uplink symbol in sub-frame of uplink and being configured to downlink symbol Emit position, but downlink actually send symbol position, the uplink symbol by with the far-end interference detection device pair The disturbed base station answered receives；

Far-end interference detection device judge the interference signal intensity whether with non-downlink character position with turn The increase of the positional distance changed between a little and reduce, the transfer point refers to that base station down is sent and turns time point of uplink receiving；

If so, far-end interference detection device determines disturbed base station by distally applying the interference for disturbing base station.

Wherein, determine disturbed base station by after distally applying and disturbing the interference of base station in far-end interference detection device, further includes:

Far-end interference detection device determines that the corresponding distal end in disturbed base station is applied and disturbs base station information.

Wherein, the far-end interference detection device detection detects the strong of the interference signal that non-downlink character position is subject to The step of spending include:

Far-end interference detection device will test non-downlink character position and be divided into N number of tim e- domain detection window in the time domain；

Far-end interference detection device to N number of tim e- domain detection window by apart from the transfer point by closely being carried out to remote sequence Serial number；

Far-end interference detection device calculates the interference signal intensity in each detection window, obtains in each detection window Interference signal intensity average value.

Wherein, the step of far-end interference detection device calculates interference signal intensity include:

Far-end interference detection device selects scheduled frequency domain resource to calculate the interference letter that non-downlink character position is subject to Number intensity, the scheduled frequency domain resource includes: the frequency domain resource that Physical Broadcast Channel PBCH is occupied and/or main synchronous letter The frequency domain resource that number PSS/ secondary synchronization signal SSS is occupied；Or

Far-end interference detection device selection full bandwidth frequency domain resource calculates the interference letter that non-downlink character position is subject to Number intensity.

Wherein, whether the far-end interference detection device judges the intensity of the interference signal with non-downlink symbol The increase of symbolic distance between position and transfer point and the step of reducing include:

Far-end interference detection device judges whether the interference signal intensity average value in the latter tim e- domain detection window is less than phase Interference signal intensity average value in adjacent previous tim e- domain detection window；Or the interference signal intensity in previous tim e- domain detection window It is pre- that ratio of the difference of average value and the interference signal intensity average value in adjacent the latter tim e- domain detection window greater than 0 is greater than one If threshold value.

Wherein, the far-end interference detection device determines that the step of disturbing base station information packet is applied in the corresponding distal end in disturbed base station It includes:

Far-end interference detection device is obtained distally to apply the physical base station mark PCI for disturbing base station and distally apply and be disturbed between base station Radio transmission distance, distally apply and disturb the frequency point configuration information of base station, distally apply and disturb base station azimuth information；

Far-end interference detection device is detecting that the frequency point configuration information for disturbing base station is applied in distal end and the frequency point of disturbed base station is matched When confidence breath is consistent, retains to apply with the distal end with PCI of the frequency point accordant configuration information of disturbed base station and disturb base station, obtain first Retain distally to apply and disturbs base station；

Far-end interference detection device, which by first retains distal end, to be applied each distal end disturbed in base station and applies and disturb base station and disturbed base station Geographic distance make comparisons with corresponding radio transmission distance, apply in comparison result instruction distal end and disturb base station and disturbed base station geographic Distance with corresponding radio transmission range difference within the scope of predictive error when, retain the distal end with PCI and apply and disturbs base station, obtain It takes the second reservation distal end to apply and disturbs base station；

Far-end interference detection device obtains the second reservation distal end and applies the azimuth information for disturbing base station, is distally applying the side for disturbing base station When position information instruction is in the error range of the antenna directional angle of disturbed base station, retaining, there is the distal end of PCI, which to apply, disturbs base station, It determines that the corresponding distal end with PCI in disturbed base station is applied and disturbs station list.

Wherein, the far-end interference detection device obtains the step of physical base station mark PCI for disturbing base station is applied in distal end and includes:

The interference signal that far-end interference detection device receives non-downlink character position in time-domain is adopted Sample obtains sampled data of the interference signal after over-sampling；

Far-end interference detection device carries out that sliding is related to the sampled data using PSS sequence, the peak of acquisition PSS signal Value information；

The peak information for the PSS signal that far-end interference detection device will acquire and a predetermined detection threshold value make ratio Compared with acquisition comparison result；

Far-end interference detection device indicates that the peak value of the PSS signal is greater than the predetermined detection threshold value in comparison result When, confirmly detect PSS signal；

According to SSS signal and PSS signal, regular time difference determines that SSS signal is examined to far-end interference detection device in the time domain The time-domain position of survey carries out the coherent detection of SSS sequence, obtains SSS sequence；

Far-end interference detection device obtains distally applying the physical base station mark for disturbing base station according to PSS sequence and SSS combined sequence Know PCI.

Wherein, the far-end interference detection device obtain and distal end apply disturb radio transmission between base station apart from the step of packet It includes:

Far-end interference detection device obtains that PSS signal peak obtains the moment and distal end is applied when disturbing base station and sending the PSS signal The time difference at quarter, obtain Transmission Time Interval；

Far-end interference detection device is obtained applying with distal end and be disturbed according to the Transmission Time Interval and electromagnetic transmission rate Radio transmission distance between base station.

Wherein, the far-end interference detection device determines that corresponding distal end applies the step of disturbing base station information and includes:

Far-end interference detection device sends other in far-end interference detection information to preset range under a default mechanism Distally disturbed base station；Wherein, the far-end interference detection information includes: the identification information of base station；The mechanism is to guarantee An only disturbed base station sends the far-end interference detection information in one predetermined time, and sends to each disturbed base station of determination The time point of the far-end interference detection information；Other described disturbed base stations in distal end are also all distally to apply to disturb base station；

Far-end interference detection device statistics receives the far-end interference detection information and parses the disturbed base station The quantity information of other disturbed base stations in distal end of identification information determines that distal end is applied and disturbs station list.

In order to solve the above-mentioned technical problem, the embodiment of the present invention also provides a kind of far-end interference based on TD-LTE system Detection device, wherein include:

Detection module, for detecting the intensity for the interference signal that non-downlink character position is subject to, the non-downlink hair Penetrating character position includes protecting time slot, uplink pilot time slot and uplink symbol in sub-frame of uplink and being configured to downlink symbol hair Position is penetrated, but downlink does not send the position of symbol actually, the uplink symbol is by corresponding with the far-end interference detection device Disturbed base station receive；

Judgment module, for judging the intensity of the interference signal whether with non-downlink character position and transfer point Between positional distance increase and reduce, the transfer point refers to that base station down is sent and turns time point of uplink receiving；

First determining module, for when judgment module is judged as YES, it is determined that disturbed base station by distally applying in disturbed base station Interference.

Wherein, the far-end interference detection device further include:

Second determining module disturbs base station information for determining that the corresponding distal end in disturbed base station is applied.

Wherein, the detection module includes:

Submodule is divided, for non-downlink character position to be divided into N number of tim e- domain detection window in the time domain；

Number submodule, for N number of tim e- domain detection window by apart from the transfer point by closely being carried out to remote sequence Serial number；

First acquisition submodule obtains each detection for calculating the interference signal intensity in each detection window Interference signal intensity average value in window.

Wherein, first acquisition submodule includes:

First computing unit, for selecting scheduled frequency domain resource to calculate the interference letter that non-downlink character position is subject to Number intensity, the scheduled frequency domain resource includes: the frequency domain resource that Physical Broadcast Channel PBCH is occupied and/or main synchronous letter The frequency domain resource that number PSS/ secondary synchronization signal SSS is occupied；Or

Second computing unit, for selecting full bandwidth frequency domain resource to calculate the interference letter that non-downlink character position is subject to Number intensity.

Wherein, the judgment module includes:

Judging submodule, for judging it is adjacent whether the interference signal intensity average value in the latter tim e- domain detection window is less than Previous tim e- domain detection window in interference signal intensity average value；Or the interference signal intensity in previous tim e- domain detection window is flat It is default that the ratio of mean value and the difference of the interference signal intensity average value in adjacent the latter tim e- domain detection window greater than 0 is greater than one Threshold value.

Wherein, second determining module includes:

Second acquisition submodule, for obtain distal end apply disturb base station physical base station mark PCI, with distal end apply disturb base station it Between radio transmission distance, distally apply and disturb the frequency point configuration information of base station, distally apply and disturb base station azimuth information；

Third acquisition submodule, for detecting the frequency point distally applied and disturb the frequency point configuration information of base station with disturbed base station When accordant configuration information, retains to apply with the distal end with PCI of the frequency point accordant configuration information of disturbed base station and disturbs base station, acquisition the One reservation distal end, which is applied, disturbs base station；

4th acquisition submodule is applied each distal end disturbed in base station and is applied for retaining distal end for first and disturbs base station and disturbed base The geographic distance stood is made comparisons with corresponding radio transmission distance, is applied with disturbing base station and disturbed base station in comparison result instruction distal end Manage distance with corresponding radio transmission range difference within the scope of predictive error when, retain the distal end with PCI and apply and disturbs base station, Acquisition second, which retains distally to apply, disturbs base station；

First determines submodule, distally applies for obtaining the second reservation and disturbs the azimuth information of base station, disturbs base station distally applying Azimuth information when indicating in the error range of the antenna directional angle of disturbed base station, retain the distal end with PCI and apply and disturbs Base station determines that the corresponding distal end with PCI in disturbed base station is applied and disturbs station list.

Wherein, second acquisition submodule includes:

First acquisition unit, the interference signal for receiving in time-domain to non-downlink character position are adopted Sample obtains sampled data of the interference signal after over-sampling；

Second acquisition unit, sliding is related for being carried out using PSS sequence to the sampled data, acquisition PSS signal Peak information；

Third acquiring unit, the peak information of the PSS signal for will acquire and a predetermined detection threshold value are made Compare, obtains comparison result；

Determination unit, when for indicating that the peak value of the PSS signal is greater than the predetermined detection threshold value in comparison result, Confirmly detect PSS signal；

4th acquiring unit, for regular time difference to determine SSS signal in the time domain according to SSS signal and PSS signal The time-domain position of detection carries out the coherent detection of SSS sequence, obtains SSS sequence；

5th acquiring unit distally applies the physical base station mark for disturbing base station for obtaining according to PSS sequence and SSS combined sequence Know PCI.

Wherein, second acquisition submodule further include:

6th acquiring unit, for obtaining, PSS signal peak obtains the moment and distal end is applied when disturbing base station and sending the PSS signal The time difference at quarter, obtain Transmission Time Interval；

7th acquiring unit is applied for obtaining according to the Transmission Time Interval and electromagnetic transmission rate with distal end Disturb the radio transmission distance between base station.

Wherein, second determining module further include:

Sending submodule, for sending other in far-end interference detection information to preset range under a default mechanism Distally disturbed base station；Wherein, the far-end interference detection information includes: the identification information of base station；The mechanism is to guarantee An only disturbed base station sends the far-end interference detection information in one predetermined time, and sends to each disturbed base station of determination The time point of the far-end interference detection information；Other described disturbed base stations in distal end are also all distally to apply to disturb base station；

Second determines submodule, receives the far-end interference detection information for statistics and parses the disturbed base station Identification information other disturbed base stations in distal end quantity information, determine that distal end is applied and disturb station list.

The advantageous effects of the above technical solutions of the present invention are as follows:

The solution of the present invention, which is used, is divided into multiple detection windows for non-downlink character position, and to multiple detection window By, by closely carrying out serial number to remote sequence, and judging the interference signal intensity in the latter detection window apart from the transfer point Whether average value is less than in the interference signal intensity average value or previous tim e- domain detection window in adjacent previous detection window The difference of interference signal intensity average value in interference signal intensity average value and adjacent the latter tim e- domain detection window is greater than 0 Ratio is greater than a preset threshold；If if, i.e., determination receives far-end interference.It being capable of accurate detection using the solution of the present invention Base station information to further help in subsequent determining distal end apply is disturbed by far-end interference in base station whether out.

Detailed description of the invention

Fig. 1 shows far-end interference hangover specificity analysis figures；

The frame structure configuration diagram of Fig. 2 expression TD-LTE system；

When Fig. 3 indicates that TD-LTE system uses cyclic prefix, special subframe configuration diagram；

Fig. 4 indicates frame structure type 2, the physical channel distribution map of special subframe Configuration Type 7；

Fig. 5 indicates to interfere with each other schematic diagram between base station；

Fig. 6 indicates that different propagation distance bring interferes schematic diagram；

Fig. 7 indicates the far-end interference detection method flow diagram of the invention based on TD-LTE system；

Fig. 8 shows far-end interference time domains to judge window；

Fig. 9 indicates the far-end interference structure of the detecting device schematic diagram one of the invention based on TD-LTE system；

Figure 10 indicates the far-end interference structure of the detecting device schematic diagram two of the invention based on TD-LTE system；

Figure 11 indicates the detection module structural representation in the far-end interference detection device of the invention based on TD-LTE system Figure；

Figure 12 indicates the second determining module structure in the far-end interference detection device of the invention based on TD-LTE system Schematic diagram one；

Figure 13 indicates the second acquisition submodule knot in the far-end interference detection device of the invention based on TD-LTE system Structure schematic diagram；

Figure 14 indicates the second determining module structure in the far-end interference detection device of the invention based on TD-LTE system Schematic diagram two.

Specific embodiment

To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool Body embodiment is described in detail.

In the forth generation mobile communication 4G that 3GPP (the 3rd Generation Partner Project) standard defines Two kinds of duplex modes, FDD are defined in LTE (the Long Term Evolution) technology of (4th Generation) (Frequency Division Duplexing) and TDD (Time Division Duplexing).(make below in TDD LTE Represent TDD LTE with TD-LTE) in system, the Uu that eats dishes without rice or wine between user terminal and base station equipment distinguished using the time uplink and Downlink.

Defining frame structure is the basis for defining physical channel and air interface synchronization etc., and the frame structure of TD-LTE, 10ms's is wireless Basic unit of the frame as frame structure, the radio frames of 10ms are subdivided into the subframe of 10 1ms, a son of the frequency domain of LTE Carrier widths are 15khz, amount to 2048 point samplings, and corresponding sample rate is 2048*15khz, and the duration of a sampling point is Number of samples within 1/ (30720*k), i.e. 1ms is 30720 sampled points (subsequent to will use symbol Ts to characterize).

For TD-LTE system, subframe type is divided into three classes, downlink subframe, sub-frame of uplink and special subframe, such as Fig. 2 institute Show, it is different according to the demand of business etc., it can be more configured flexibly the frame structure index of TD-LTE, be with Fig. 3 configuration index 2 Example, the radio frames of 1 10ms are made of the field of 2 identical 5ms, and the field of each 5ms includes 3 class subframes, " D " table Show downlink subframe, " S " indicates that special subframe, " U " indicate sub-frame of uplink.

From the time span of corresponding 2048 sampled points of OFDM (orthogonal frequency division multiplexing) symbol in the angle of time domain, it is Solve the problems, such as intersymbol intersymbol interference as caused by the delay spread of wireless signal, LTE system introduces OFDM system CP (cyclic prefix) technology of system come to confrontation intersymbol interfere with each other problem, to reduce the complexity of receiver algorithm.

In view of CP bring expense, 1ms amounts to 30720 sampled points and is divided into 14 OFDM symbols again, wherein the 1st He The length of the cyclic prefix CP of 8th OFDM symbol is 160 Ts, and the length of the cyclic prefix of remaining 12 symbol is 144 A Ts.The OFDM symbol of uplink, downlink and special subframe follows this rule.

As shown in figure 3, special subframe is further split into as three classes time slot, DWPTS (descending pilot frequency time slot), GP (protection Time slot) and UPPTS (uplink pilot time slot), special subframe configuration can be correspondingly set according to coverage distance demand etc..For example, By taking sub-frame configuration 6 as an example, the ratio of the symbolic number of DWPTS, GP and UPPTS Time Slot Occupancy is 9:3:2.

Lower Fig. 4 gives frame structure type 2, several Main physical channels of special subframe configuration 7 and signal distributions position, Wherein DWPTS time slot of CRS (the Cell Reference Signal) signal distributions in downlink subframe and special subframe.CRS when The specific distributing position of domain and frequency domain is related with the antenna port configuration of base station, in the case where the port Ji Liangge of base station, CRS distribution On the 1st and the 5th symbol of time domain, CRS is distributed on position of the subcarrier number mould 3 equal to 0 on frequency domain.

Physical Broadcast Channel PBCH (physical Broadcast Channel) is distributed in wireless frame number in the time domain Mould 2 is equal to the position of 0 (even number radio frames), is specifically distributed in the 1st of the 2nd time slot of first downlink subframe in radio frames Onto 4 this 4 symbols, PBCH is distributed on 72 subcarriers among entire frequency domain on frequency domain.

Secondary synchronization signal SSS (Secondary Synchronization Signal) is located at first son of each field It is located on 62 subcarriers among frequency domain in the last symbol of frame, on frequency domain.Primary synchronization signal PSS (Primary Synchronization Signal) on the third symbol of the special subframe (second subframe) of each field, frequency domain On upper 62 subcarriers positioned among frequency domain.

By timing separation uplink and downlink in TDD, in order to avoid interference at crossed slot between the base station of proximal end, base station it Between need to introduce synchronization mechanism, for example the base station of TDD passes through the Beidou of external GPS synchronization signal or Chinese independent intellectual property right System is realized and is synchronized between base station, to avoid the interference problem between the base station being closer.Proximal end base station interference problem is main It shows, base station distance is closer, and the loss of Electromagnetic Wave Propagation is relatively small, in TDD system if different between closer base station Step, then apply disturb base station sending wireless signal received by the base station of short distance, bring stronger interference, seriously affect communication matter Amount.By the synchronization mechanism introduced between base station, guarantee that proximal end base station sends simultaneously and receives simultaneously, so as to avoid some The problem of wireless signal that base station is sent is received by other base stations of proximal end.

As described above, by introduce base station between synchronization mechanism can to avoid the interference problem between the base station of proximal end, but It is in the practice of actual network operation, under certain special scenes, however it remains the problem of telepoint base station interferes.Such as the following figure Shown in 5, apply to disturb to synchronize between base station and disturbed base station sending and receiving wireless signal, but under certain special scenes, than Such as in the case where air humidity is bigger, there are atmospheric duct effects in electromagnetic transmission, leads to tens kilometers of even several hundred public affairs In other than base station send signal received by atmospheric duct effects by disturbed base station, bring disturbed base station uplink interference to ask Topic.

In conjunction with shown in Fig. 5 and Fig. 6, when propagation distance is 300km, corresponding propagation delay 1ms uses free-space propagation The corresponding path loss 150.3dB of model, bring interference lifting 7dB；Apply the 9th downlink of the special subframe for disturbing base station Symbol the 9th symbol of disturbed base station uplink is reached by the propagation of 300km.With reference to figure 4 above, the special subframe for disturbing base station is applied The CRS of the 8th symbol bring the interference to disturbed the 8th symbol of base station uplink.Apply the PSS signal for disturbing the special subframe of base station The interference to the 3rd symbol in disturbed base station is brought, the PSS for applying first subframe for disturbing base station is brought to the 2nd symbol of UPPTS Interference.

When propagation distance is 364km, corresponding propagation delay 1.22ms, path loss 152dB, interference lifting 5.3dB.It applies The symbol for disturbing the 9th downlink of the special subframe of base station reaches the 12nd of disturbed base station uplink by the propagation of 364km Symbol.With reference to figure 4 above, the CRS for applying the 8th symbol of the special subframe for disturbing base station is brought to the 11st symbol of disturbed base station uplink Interference.It applies and disturbs the PSS signal of the special subframe of base station and bring interference to the 6th symbol in disturbed base station, apply and disturb the of base station The PSS of one subframe brings the interference to the 3rd symbol of sub-frame of uplink.

It to sum up analyzes, preceding 9 symbols of UPPTS time slot and sub-frame of uplink are simultaneously by propagation distance 1 and propagation distance 2 The interference for disturbing base station is applied, similarly the characteristics of available far-end interference are as follows: the uplink symbol closer with downlink subframe time interval Number interference signal being subject to is more, and interference signal intensity is also stronger.

Based on above-mentioned analysis, the far-end interference detection method of TD-LTE system of the invention, as shown in fig. 7, comprises such as Lower step:

Step 71, far-end interference detection device detects the intensity for the interference signal that non-downlink character position is subject to, institute Stating non-downlink character position includes protecting time slot, uplink pilot time slot and uplink symbol in sub-frame of uplink and being configured to Downlink symbol emits position, but downlink does not send the position of symbol actually, and the uplink symbol with the far-end interference by examining The corresponding disturbed base station of device is surveyed to receive；

Step 72, whether far-end interference detection device judges the intensity of the interference signal with non-downlink sign bit Set the increase of the positional distance between transfer point and reduce, the transfer point refer to base station down send turn uplink receiving when Between point；

Step 73, if so, far-end interference detection device determines disturbed base station by distally applying the interference for disturbing base station.

Below in conjunction with attached drawing and specific embodiment, above-mentioned steps to step are described in detail.

Based on above-mentioned analysis it is found that TD-LTE system far end interfering signal is present in GP, UPPTS and sub-frame of uplink position It sets, and turns the bigger of the interference signal that the closer position of sub-frame of uplink transfer point receives apart from downlink subframe.Following Fig. 8 institute Show, the interference of the position GP being subject to is greater than the interference that UPPTS interference is greater than sub-frame of uplink under normal conditions, and from time-domain In angle, the interference that the closer position of transfer point described in distance is subject in sub-frame of uplink is bigger.

Apart from downlink subframe to the closer position of sub-frame of uplink transfer point, (symbol in time domain is configured to downlink symbol Emit position, but downlink actually sends the position of symbol) the stronger feature of interference is also that far-end interference and other types are dry The main distinction disturbed, such as synchronous between base station, the use of closer homogeneous-frequency adjacent-domain around GP time slot not will receive in TDD system The interference of family terminal bring uplink service.Sub-frame of uplink inner periphery exists with the UE bring uplink interference signal power of frequency adjacent base station The intersymbol of time domain is in a basic balance, and there is no obvious intersymbol power difference problem, the interference signal intensity phases of distinct symbols Together.

According to above-mentioned analysis, judge that the method by far-end interference can be achieved in that

Far-end interference detection device (device can be disturbed base station, or a part of disturbed base station, it can also be with It is associated with disturbed base station, be located near disturbed base station) basis is configured to downlink symbol transmitting position, but downlink is not sent out actually The position of symbol is sent (including the uplink symbol in GP and/or UPPTS and/or sub-frame of uplink and to be configured to downlink symbol transmitting position Set, but downlink actually send symbol position) in the time domain be interfered the difference of signal strength to determine whether by To far-end interference.The judgment mode of interference signal intensity difference in non-downlink character position time domain, specifically can be by " GP And/or UPPTS and/or sub-frame of uplink " uplink symbol and be configured to downlink symbol transmitting position, but downlink is not sent actually The position of symbol is divided into N number of tim e- domain detection window, which can have overlapping, can also be non-overlapping, and preferably Ground, detection window length are identical.From apart from position of conversion point by closely to far serial number is successively carried out to each window, to each time domain Interference signal in detection window is calculated, and calculation method includes calculating average value etc..Interference signal after calculating is carried out again Calculus of differences, specifically, the average value calculated two neighboring detection window carry out difference operation Δ I_n=I_n-I_n+1, n= 1…N-1；If Δ I_nFor positive value or all Δ I_nValue greater than 0 ratio be greater than a preset threshold or Δ I_n=I_n+1- I_n, Δ I_nFor negative value, or or all Δ I_nRatio of the value less than 0 be greater than a preset threshold, then determine by far-end interference.

Wherein, the step of far-end interference detection device calculates interference signal intensity includes: far-end interference detection dress It sets and can choose the intensity that scheduled frequency domain resource calculates the interference signal that non-downlink character position is subject to.The scheduled frequency Domain resource includes: that the frequency domain resource that Physical Broadcast Channel PBCH is occupied and/or primary synchronization signal PSS/ secondary synchronization signal SSS are accounted for Frequency domain resource；Or

To sum up, the solution of the present invention can accurate detection whether go out base station by far-end interference.

After determination receives far-end interference, determine that the information for disturbing base station is applied in the corresponding distal end in disturbed base station:

Existing far-end interference detection technique is detected only according to " hangover " characteristic of interference, that is, assumes interference " cut-off " At some symbol of some sub-frame of uplink, therefore, calculated only according to the symbol of this cut-off apply disturb base station with this base The distance stood, thus location interference source.As shown in fig. 5, it is assumed that propagation of the interference signal Jing Guo propagation distance 2 reaches disturbed base Stand, therefore, it is determined that the 12nd character position of sub-frame of uplink be " hangover " rest position, with this come conclude telepoint base station interfere Distance is " propagation distance 2 ", it is evident that this detection mode misses out the bring interference of the telepoint base station of " propagation distance 1 " Problem, to cause the higher leak detection probability of far-end interference base station.

The solution of the present invention provides two kinds of preferred embodiments, disturbs base station to determine to apply.

The first scheme:

(1), to applying, the physical base station for disturbing base station is identified and distance detects for disturbed base station；

(2), determining apply of matching is carried out using Base Station Identification, distance, antenna directional angle and frequency point configuration information disturb base station (i.e. Obtain base station name or base station unique identification).

(1) is described in detail below:

Physical base station mark PCI is by the public determination of PSS and SSS in LTE system, defined in system 3 PSS sequences and 168 SSS sequences, PSS and SSS determine the PCI of a base station, and one and only one PCI of each base station. Amounting to available PCI number is 3 × 168=504, avoided by way of the network planning under normal conditions adjacent two it is same The base station of frequency uses identical PCI.Two base stations other than certain geographic distance can use identical PCI.

Beacon channel of the PSS and SSS as base station in existing network carries out down-going synchronous to base station for user terminal Deng in existing mechanism, base station equipment does not need to detect PSS and SSS.

In the scene of far-end interference, the upper of proximal end base station may be traveled to apart from farther away base station PSS and SSS signal Uplink symbol in row " GP and/or UPPTS and/or sub-frame of uplink " and it is configured to downlink symbol transmitting position, but downlink is not At the practical position for sending symbol.After determining by far-end interference, using PSS sequence to " GP and/or UPPTS and/or uplink Uplink symbol in frame " and it is configured to downlink symbol transmitting position, but downlink actually sends the position of symbol, in the time The signal received in domain carries out related operation, and to detect PSS signal, (PSS signal detection mainly will by receive and process Data after sampling carry out related operation) and corresponding sync bit.The PSS sync bit refers to, using PSS sequence into The operations such as row correlation obtain time domain at the peak value of PSS (relative position in subframe) position.

3 PSS sequences of main definitions in LTE system, base station in PSS sending instant according to predefined base station parameter, Specified PSS is selected to be sent from 3.

It calculates correlation peak and is compared with the thresholding of setting, if it is greater than the thresholding of setting, then it is assumed that there are PSS letters Number, and at the time of determining PSS relevant peaks；If sliding associated window no more than the thresholding of setting；Complete a PSS sequence After synchronizing, then replaces other PSS sequences and carry out identical relevant operation.Record the position of all corresponding relevant peaks and right The PSS sequence answered.

After obtaining PSS sequence, SSS signal detection is further determined according to regular time difference in SSS and PSS time domain Time location carries out the coherent detection of SSS sequence, obtains SSS sequence, obtain PCI according to PSS and SSS combined sequence.Specifically Ground, PSS signal and SSS signal differ 3 OFDM symbols, corresponding 2496 sampling points in the time domain.Obtain PSS correlation peak it Afterwards, the timing according to SSS and PSS is poor, obtains the sync bit of SSS, and the phase similar to PSS is used on the sync bit It closes detection method and obtains SSS sequence.SSS sequence and corresponding PSS sequence composition base station physical identify PCI.

After the above-mentioned detection for obtaining PSS relevant peaks, according to the sending instant of the relevant peaks time of reception and Reference BTS Time difference obtains Transmission Time Interval T_difference=T_RsPss-T_TxPss, wherein T_RsPssFor the PSS relevant peaks time of reception, T_TxPss The PSS moment is sent for benchmark base station.Specifically PSS sending instant is located at the third symbol of special subframe, detects PSS phase It is the propagation time that the position corresponding time for closing peak value, which subtracts Reference BTS PSS sending instant to obtain the time difference, according to transmission Time and electromagnetic transmission rate C=3.0 × 10⁸M/s obtains L=C × T_difference.To obtain interference source base station with by Disturb the radio transmission distance between base station.

(2) are described in detail below:

The PCI for disturbing base station is applied according to obtained in (1) and applies the radio transmission distance disturbed between base station and disturbed base station Afterwards, according to the frequency point configuration for applying the PCI for disturbing base station, propagation distance, the antenna directional angle of disturbed base station, disturbed base station detected Deng to apply disturb base station match station list is disturbed to applying in some disturbed base station.Wherein, specific matching process is as follows:

Specific matched process includes: the frequency point configuration and disturbed base station frequency in network in all candidate BS engineering parameters Point configures identical base station and is retained and be further processed that (frequency point configures different base station and eliminates candidate BS column Table).Further, candidate BS is matched using the PCI list that applying of detecting of far-end interference detection module disturbs base station, It is present in apply and disturbs base station in the PCI list of base station and be retained, does not disturb the base station in the PCI list of base station and be excluded applying.Into One step, calculates the geographic distance between candidate BS and disturbed base station, and disturbs base station and disturbed with applying obtained in (1) The radio transmission distance of base station is compared, and the base station of error in a certain range is retained, more than the base station quilt of certain error It excludes.Further, the error range whether line between candidate BS and disturbed base station is located at disturbed base station deflection is calculated Within, if in the error range of the disturbed base station in position, which is retained, and otherwise, which is excluded.

To get to corresponding apply in disturbed base station disturb station list after completing the above process, record and save disturbed base station, It applies and disturbs station list, each, which is applied, disturbs engineering parameter information of base station etc..

Second scheme:

(1), far-end interference detection device is sent in far-end interference detection information to preset range under a default mechanism Other disturbed base stations in distal end；Wherein, the far-end interference detection information includes: the identification information of base station；The mechanism to Guarantee that only having a disturbed base station within a predetermined time sends the far-end interference detection information, and to each disturbed base of determination It stands and sends the time point of the far-end interference detection information；Other described disturbed base stations in distal end are also all distally to apply to disturb base station；

(2), far-end interference detection device statistics receives the far-end interference detection information and parses the disturbed base The quantity information of other disturbed base stations in distal end of the identification information stood determines that distal end is applied and disturbs station list.

Above-mentioned (one) to (two) is described in detail below:

TDD system uplink and downlink use identical frequency, and the wireless channel of TDD system has good reciprocity, i.e., Apply disturb base station to disturbed base station down send signal wireless channel propagation characteristic, with disturbed base station to apply disturb base station uplink without The propagation characteristic of line channel is similar.Disturbed base station is applied while disturb base station far-end interference, is similarly disturbed base station and is brought to applying Far-end interference.

For the base station for detecting the presence of far-end interference problem, far-end interference detection information sending module is connect with specific objective The Timing Advance that the far-end interference detection information is arranged in window is received, and is sent out to other base stations that there are problems that far-end interference It send.It is deployed in and there are problems that the far-end interference information of far-end interference base station location receives and detection module connects in predefined target It receives window the far-end interference detection information is received and detected.

The far-end interference detection information includes base station identification information, and wherein the base station identification information includes: specific remote Hold Interference Detection particular sequence and/or the unique identification information with the associated base station of far-end interference detection information sending module.Far End interference particular sequence can be using similar to ZC sequence, Gold sequence or m-sequence etc. (PSS sequence mentioned in the present invention Belong to ZC sequence, SSS sequence is m-sequence).With the LTE base station grade of the associated base station of far-end interference detection information sending module Unique identification is E-CGI (E-UTRAN Cell Global Identification).Wherein E-CGI is made of two parts, PLMN ID (PLMN Identifier, public land mobile network mark) and ECI (E-UTRAN Cell Identity, wirelessly Access network base stations mark), wherein PLMN ID includes MCC (mobile country code, mobile country code) and MNC again (mobile network code, mobile network code, MNC).

To guarantee that far-end interference receives and the reliability of detection (avoids multiple far-end interference detection information sending modules simultaneously Interference problem caused by sending), a kind of mechanism that the collaboration of far-end interference detection information is sent further is proposed here, that is, is controlled By one, there are the progress of the far-end interference detection information sending module of the base station association of far-end interference putting at the same time at most It sends, the cooperative transmitter system is described below:

The frame number that far-end interference detection information is sent is defined, frame number is defined and mark is cooperateed with to be associated with far-end interference, control exists Each frame, only a far-end interference collaboration mark association, namely an only base station is associated remote in the same frame Interference information sending module is held to send far-end interference detection information.

The embodiment of interference synergic mark is introduced first, and the cooperative module that far-end interference detection information multiple spot is sent is (following Abbreviation far-end interference cooperative module) method according to step (1) counted and summarized to the base station information by distal end, And one distal stem of base station order-assigned being each interfered is given according to the sequence of base station unique identification (E-CGI) from small to large The mark that collaboration is sent is disturbed, the far-end interference collaboration transmission mark of different base station is different, that is, there is each base of far-end interference It stands and distributes one, unique and serial number far-end interference collaboration mark icid (interference coordination identity)。

Next the concurrency controlling mechanism for introducing far-end interference transmission, realizes UE and base in existing LTE system Frame synchronization between standing, system define 4096 wireless frame numbers from 0 to 4095, and each radio-frame time length is 10ms, System changes radio frames again and again.

If be detected in region has the problem of 4096 far-end interferences base station just, so that it may define system frame number SFN The far-end interference information sending module of base station association identical with icid executes transmission.Under normal conditions, there are far-end interferences to ask The base station number of topic is less likely just to be equal to the number 4096 of SFN, also, in order to improve detection reliability, it usually needs allows Far-end interference detection information is repeatedly sent with the associated far-end interference detection module of some far-end interference base station, same base station also needs Sliding transmission is carried out in different sliding windows.Therefore, the collaboration that far-end interference information under normal circumstances is given below is sent Mechanism.

The associated M transmission window Mwin of each far-end interference base station is defined, each transmission window corresponds to K radio frames Krfn (has send opportunity twice) in each radio frames, need that the base station for sending far-end interference information is cooperateed with to have Nicid.

The radio frames for obtaining sending round needs according to Mwin × Krfn × Nicid, define log₂(Mwin× Krfn × Nicid) (take log with 2 for bottom logarithm, and to being rounded in result).For interference Coordinate superframe (HicFN, the superframe that interference synergic is sent) sum, HicFN=m_win × k_rfn × n_icid is n_ for number The base station of icid sends kth _ rfn radio frames sending time point of window in m_win.

Only have the relevant base station of a far-end interference by the i.e. controllable point at the same time of above-mentioned mechanism and sends distal end Interference Detection information.

Far-end interference information receives and detection module detects the far-end interference in predefined intended recipient window and believes Breath is received and is detected, and far-end interference detection letter is received described in transmission receiving far-end interference detection information and parsing After the identification information of the disturbed base station of breath, establish and the reception of far-end interference information and the associated disturbed base station of detection module and distal end The associated disturbed base station association relationship of Interference Detection information sending module.

To sum up, the present invention really apply and disturb the scheme of base station and can reduce distal end and apply the leak detection probability for disturbing base station by Dingyuan end.

As shown in figure 9, the embodiment of the present invention provides a kind of far-end interference detection device based on TD-LTE system, In, comprising:

Detection module 91, for detecting the intensity for the interference signal that non-downlink character position is subject to, the non-downlink Transmitting character position includes protecting time slot, uplink pilot time slot and uplink symbol in sub-frame of uplink and being configured to downlink symbol Emit position, but downlink actually send symbol position, the uplink symbol by with the far-end interference detection device pair The disturbed base station answered receives；

Judgment module 92, for judging the intensity of the interference signal whether with non-downlink character position and conversion The increase of positional distance between point and reduce, the transfer point refers to that base station down is sent and turns time point of uplink receiving；

First determining module 93, for when judgment module is judged as YES, it is determined that disturbed base by distally applying in disturbed base station The interference stood.

Wherein, as shown in Figure 10, far-end interference detection device further include:

Second determining module 101 disturbs base station information for determining that the corresponding distal end in disturbed base station is applied.

Wherein, the detection module 91, as shown in figure 11, comprising:

Submodule 110 is divided, for non-downlink character position to be divided into N number of tim e- domain detection window in the time domain；

Number submodule 111, for N number of tim e- domain detection window by apart from the transfer point by closely to remote sequence into Row serial number；

First acquisition submodule 112 obtains each inspection for calculating the interference signal intensity in each detection window Survey the interference signal intensity average value in window.

Wherein, first acquisition submodule 112 includes:

Wherein, the judgment module 92, comprising:

Wherein, second determining module 101, as shown in figure 12, comprising:

Second acquisition submodule 120, for obtaining, the physical base station mark PCI for disturbing base station is applied in distal end and distal end applies and disturbs base Between standing radio transmission distance, distally apply and disturb the frequency point configuration information of base station, distally apply and disturb base station azimuth information；

Third acquisition submodule 121, for detecting that distal end applies the frequency point configuration information for disturbing base station and disturbed base station When frequency point accordant configuration information, retains to apply with the distal end with PCI of the frequency point accordant configuration information of disturbed base station and disturb base station, obtain It takes the first reservation distal end to apply and disturbs base station；

4th acquisition submodule 122, for by first retain distal end apply each distal end disturbed in base station apply disturb base station with by The geographic distance for disturbing base station is made comparisons with corresponding radio transmission distance, is applied in comparison result instruction distal end and is disturbed base station and disturbed base Stand geographic distance with corresponding radio transmission range difference within the scope of predictive error when, retain the distal end with PCI and apply and disturbs Base station, acquisition second, which retains distally to apply, disturbs base station；

First determines submodule 123, distally applies for obtaining the second reservation and disturbs the azimuth information of base station, disturbs base distally applying When the azimuth information stood is indicated in the error range of the antenna directional angle of disturbed base station, retains the distal end with PCI and apply Base station is disturbed, determines that the corresponding distal end with PCI in disturbed base station is applied and disturbs station list.

Wherein, second acquisition submodule 120, as shown in figure 13, comprising:

First acquisition unit 131, interference signal for being received in time-domain to non-downlink character position into Row sampling obtains sampled data of the interference signal after over-sampling；

Second acquisition unit 132, for related, the acquisition PSS signal that carries out sliding using PSS sequence and the sampled data Peak information；

Third acquiring unit 133, the peak information and a predetermined detection threshold value of the PSS signal for will acquire It makes comparisons, obtains comparison result；

Determination unit 134, for indicating that the peak value of the PSS signal is greater than the predetermined detection threshold value in comparison result When, confirmly detect PSS signal；

4th acquiring unit 135, for regular time difference to determine that SSS believes in the time domain according to SSS signal and PSS signal Number detection time-domain position, carry out SSS sequence coherent detection, obtain SSS sequence；

5th acquiring unit 136 distally applies the physical base for disturbing base station for obtaining according to PSS sequence and SSS combined sequence Station identifications PCI.

Wherein, second acquisition submodule 120, further includes:

Wherein, second determining module 101, as shown in figure 14, further includes:

Sending submodule 141, for sending its in far-end interference detection information to preset range under a default mechanism His disturbed base station in distal end；Wherein, the far-end interference detection information includes: the identification information of base station；The mechanism is to guarantee Only have a disturbed base station within a predetermined time and send the far-end interference detection information, and to each disturbed base station hair of determination Send the time point of the far-end interference detection information；Other described disturbed base stations in distal end are also all distally to apply to disturb base station；

Second determines submodule 142, receives the far-end interference detection information for statistics and parses described disturbed The quantity information of other disturbed base stations in distal end of the identification information of base station determines that distal end is applied and disturbs station list.

It should be noted that the device is the device for including the above method, the implementation of the embodiment of the above method is suitable For can also reach identical technical effect in the embodiment of the device.

The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims

1. a kind of far-end interference detection method based on TD-LTE system characterized by comprising

Far-end interference detection device detects the intensity for the interference signal that non-downlink character position is subject to, the non-downlink Character position includes protecting time slot, uplink pilot time slot and uplink symbol in sub-frame of uplink and being configured to downlink symbol transmitting Position, but downlink does not send the position of symbol actually, and the uplink symbol is by corresponding with the far-end interference detection device Disturbed base station receives；

Whether far-end interference detection device judges the intensity of the interference signal with non-downlink character position and transfer point Between positional distance increase and reduce, the transfer point refers to that base station down is sent and turns time point of uplink receiving；

If so, far-end interference detection device determines disturbed base station by distally applying the interference for disturbing base station；

Far-end interference detection device determines that the corresponding distal end in disturbed base station is applied and disturbs base station information, comprising: far-end interference detection device Under a default mechanism, other telepoint base stations in far-end interference detection information to preset range are sent；Wherein, the distal stem Disturb the identification information that detection information includes: base station；The mechanism is to guarantee only having a disturbed base station hair within a predetermined time The far-end interference detection information is sent, and sends the time of the far-end interference detection information to each disturbed base station of determination Point；

Far-end interference detection device statistics receives the far-end interference detection information and parses the mark of the disturbed base station The quantity information of other disturbed base stations in distal end of information determines that distal end is applied and disturbs station list.

2. far-end interference detection method according to claim 1, which is characterized in that the far-end interference detection device detection The step of intensity for the interference signal that non-downlink character position is subject to includes:

Non- downlink character position is divided into N number of tim e- domain detection window by far-end interference detection device in the time domain；

Far-end interference detection device to N number of tim e- domain detection window by apart from the transfer point by closely to remote sequence progress sequence Number；

Far-end interference detection device calculates the interference signal intensity in each detection window, obtains dry in each detection window Disturb signal strength average value.

3. far-end interference detection method according to claim 1, which is characterized in that far-end interference detection device believes interference The step of number intensity is calculated include:

Far-end interference detection device selects scheduled frequency domain resource to calculate interference signal that non-downlink character position is subject to Intensity, the scheduled frequency domain resource include: the frequency domain resource and/or primary synchronization signal that Physical Broadcast Channel PBCH is occupied The frequency domain resource that PSS/ secondary synchronization signal SSS is occupied；Or

It is strong that far-end interference detection device selection full bandwidth frequency domain resource calculates the interference signal that non-downlink character position is subject to Degree.

4. far-end interference detection method according to claim 2, which is characterized in that the far-end interference detection device judgement Whether the intensity of the interference signal subtracts with the increase of the positional distance between non-downlink character position and transfer point Small step includes:

It is adjacent that far-end interference detection device judges whether the interference signal intensity average value in the latter tim e- domain detection window is less than Interference signal intensity average value in previous tim e- domain detection window；Or the interference signal intensity in previous tim e- domain detection window is average Value and ratio of the difference greater than 0 of the interference signal intensity average value in adjacent the latter tim e- domain detection window are greater than a default threshold Value.

5. far-end interference detection method according to claim 1, which is characterized in that the far-end interference detection device determines It applies the step of disturbing base station information and includes: in the corresponding distal end in disturbed base station

Far-end interference detection device obtains distal end and applies the physical base station mark PCI for disturbing base station and distally apply the nothing disturbed between base station Line propagation distance is distally applied and disturbs the frequency point configuration information of base station, distally applies and disturb base station azimuth information；

Far-end interference detection device is detecting the frequency point for distally applying the frequency point configuration information for disturbing base station and disturbed base station with confidence When ceasing consistent, retains to apply with the distal end with PCI of the frequency point accordant configuration information of disturbed base station and disturb base station, obtain first and retain Distal end, which is applied, disturbs base station；

Far-end interference detection device, which by first retains distal end, to be applied each distal end disturbed in base station and applies and disturb the ground of base station Yu disturbed base station Reason distance is made comparisons with corresponding radio transmission distance, is applied in comparison result instruction distal end and is disturbed base station and disturbed base station geographic distance When with corresponding radio transmission range difference within the scope of predictive error, retain the distal end with PCI and apply and disturbs base station, obtains the Two reservation distal ends, which are applied, disturbs base station；

Far-end interference detection device obtains the second reservation distal end and applies the azimuth information for disturbing base station, believes distally applying the orientation for disturbing base station When breath instruction is in the error range of the antenna directional angle of disturbed base station, retaining, there is the distal end of PCI, which to apply, disturbs base station, determines The corresponding distal end with PCI in disturbed base station, which is applied, disturbs station list.

6. far-end interference detection method according to claim 5, which is characterized in that the far-end interference detection device obtains Distal end apply disturb base station physical base station mark PCI the step of include:

The interference signal that far-end interference detection device receives non-downlink character position in time-domain samples, and obtains Take sampled data of the interference signal after over-sampling；

Far-end interference detection device carries out that sliding is related to the sampled data using PSS sequence, and the peak value of acquisition PSS signal is believed Breath；

The peak information for the PSS signal that far-end interference detection device will acquire is made comparisons with a predetermined detection threshold value, Obtain comparison result；

Far-end interference detection device comparison result indicate the PSS signal peak value be greater than the predetermined detection threshold value when, Confirmly detect PSS signal；

According to SSS signal and PSS signal, regular time difference determines SSS signal detection to far-end interference detection device in the time domain Time-domain position carries out the coherent detection of SSS sequence, obtains SSS sequence；

Far-end interference detection device obtains distally applying the physical base station mark for disturbing base station according to PSS sequence and SSS combined sequence PCI。

7. far-end interference detection method according to claim 6, which is characterized in that the far-end interference detection device obtains With distally apply disturb radio transmission between base station apart from the step of include:

Far-end interference detection device obtains that PSS signal peak obtains the moment and distal end applies and disturbs base station and send the PSS signal moment Time difference obtains Transmission Time Interval；

Far-end interference detection device obtains applying with distal end and disturbs base station according to the Transmission Time Interval and electromagnetic transmission rate Between radio transmission distance.

8. far-end interference detection method according to claim 1, which is characterized in that other described disturbed base stations in distal end are also same Base station is disturbed distally to apply.

9. a kind of far-end interference detection device based on TD-LTE system characterized by comprising

Detection module, for detecting the intensity for the interference signal that non-downlink character position is subject to, the non-downlink symbol Number position includes protecting time slot, uplink pilot time slot and uplink symbol in sub-frame of uplink and being configured to downlink symbol transmitting position Set, but downlink actually send symbol position, the uplink symbol by it is corresponding with the far-end interference detection device by Disturb base station reception；

Judgment module, for judging the intensity of the interference signal whether between non-downlink character position and transfer point Positional distance increase and reduce, the transfer point refers to that base station down is sent and turns time point of uplink receiving；

First determining module, for when judgment module is judged as YES, it is determined that disturbed base station and done by distally applying in disturbed base station It disturbs；

Second determining module disturbs base station information for determining that the corresponding distal end in disturbed base station is applied；Second determining module includes:

Sending submodule, under a default mechanism, sending other distal ends in far-end interference detection information to preset range Base station；Wherein, the far-end interference detection information includes: the identification information of base station；The mechanism is to guarantee in a pre- timing An interior only disturbed base station sends the far-end interference detection information, and sends the distal end to each disturbed base station of determination The time point of Interference Detection information；

Second determines submodule, for counting the mark for receiving the far-end interference detection information and parsing the disturbed base station The quantity information for knowing other disturbed base stations in distal end of information determines that distal end is applied and disturbs station list.

10. far-end interference detection device according to claim 9, which is characterized in that the detection module includes:

Number submodule, for N number of tim e- domain detection window by apart from the transfer point by closely to remote sequence progress sequence Number；

First acquisition submodule obtains in each detection window for calculating the interference signal intensity in each detection window Interference signal intensity average value.

11. far-end interference detection device according to claim 10, which is characterized in that the first acquisition submodule packet It includes:

First computing unit, for selecting scheduled frequency domain resource to calculate interference signal that non-downlink character position is subject to Intensity, the scheduled frequency domain resource include: the frequency domain resource and/or primary synchronization signal that Physical Broadcast Channel PBCH is occupied The frequency domain resource that PSS/ secondary synchronization signal SSS is occupied；Or

Second computing unit is strong for selecting full bandwidth frequency domain resource to calculate the interference signal that non-downlink character position is subject to Degree.

12. far-end interference detection device according to claim 10, which is characterized in that the judgment module includes:

Judging submodule, for judge the interference signal intensity average value in the latter tim e- domain detection window whether be less than it is adjacent before Interference signal intensity average value in one tim e- domain detection window；Or the interference signal intensity average value in previous tim e- domain detection window Ratio with the difference of the interference signal intensity average value in adjacent the latter tim e- domain detection window greater than 0 is greater than a default threshold Value.

13. far-end interference detection device according to claim 9, which is characterized in that second determining module includes:

Second acquisition submodule, for obtaining, the physical base station mark PCI for disturbing base station is applied in distal end and distal end is applied and disturbed between base station Radio transmission distance is distally applied and disturbs the frequency point configuration information of base station, distally applies and disturb base station azimuth information；

Third acquisition submodule, for detecting the frequency point configuration for distally applying the frequency point configuration information for disturbing base station and disturbed base station When information is consistent, retains to apply with the distal end with PCI of the frequency point accordant configuration information of disturbed base station and disturb base station, obtain first and protect It stays distal end to apply and disturbs base station；

4th acquisition submodule is applied each distal end disturbed in base station and is applied for retaining distal end for first and disturbs base station and disturbed base station Geographic distance is made comparisons with corresponding radio transmission distance, comparison result instruction distal end apply disturb base station and disturbed base station geographic away from When from corresponding radio transmission range difference within the scope of predictive error, retaining, there is the distal end of PCI, which to apply, disturbs base station, obtains Second reservation distal end, which is applied, disturbs base station；

First determines submodule, distally applies for obtaining the second reservation and disturbs the azimuth information of base station, is distally applying the side for disturbing base station When position information instruction is in the error range of the antenna directional angle of disturbed base station, retaining, there is the distal end of PCI, which to apply, disturbs base station, It determines that the corresponding distal end with PCI in disturbed base station is applied and disturbs station list.

14. far-end interference detection device according to claim 13, which is characterized in that the second acquisition submodule packet It includes:

First acquisition unit, the interference signal for receiving in time-domain to non-downlink character position sample, Obtain sampled data of the interference signal after over-sampling；

Second acquisition unit, sliding is related for being carried out using PSS sequence to the sampled data, the peak value of acquisition PSS signal Information；

The peak information of third acquiring unit, the PSS signal for will acquire is made comparisons with a predetermined detection threshold value, Obtain comparison result；

Determination unit determines when for indicating that the peak value of the PSS signal is greater than the predetermined detection threshold value in comparison result Detect PSS signal；

4th acquiring unit, for regular time difference to determine SSS signal detection in the time domain according to SSS signal and PSS signal Time-domain position, carry out SSS sequence coherent detection, obtain SSS sequence；

5th acquiring unit distally applies the physical base station mark for disturbing base station for obtaining according to PSS sequence and SSS combined sequence PCI。

15. far-end interference detection device according to claim 14, which is characterized in that second acquisition submodule is also wrapped It includes:

6th acquiring unit, for obtaining, PSS signal peak obtains the moment and distal end applies and disturbs base station and send the PSS signal moment Time difference obtains Transmission Time Interval；

7th acquiring unit disturbs base for according to the Transmission Time Interval and electromagnetic transmission rate, obtaining applying with distal end Radio transmission distance between standing.

16. far-end interference detection device according to claim 9, which is characterized in that other described disturbed base stations in distal end It is all distally to apply to disturb base station.