CN104052700A

CN104052700A - LTE system anti-interference method and device

Info

Publication number: CN104052700A
Application number: CN201410228390.8A
Authority: CN
Inventors: 王新雨
Original assignee: Innofidei Technology Co Ltd
Current assignee: Newpoint Intelligent Technology Group Co ltd
Priority date: 2014-05-27
Filing date: 2014-05-27
Publication date: 2014-09-17
Anticipated expiration: 2034-05-27
Also published as: CN104052700B

Abstract

The invention provides an LTE system anti-interference method and device. According to the method, when a communication terminal determines that a current work frequency band is interfered, the wave incoming direction of interference signals which interfere in the current work frequency band is detected; the communication terminal adjusts the direction of wave beams received on the current work frequency band, and the interference signals in the wave incoming direction are null. The method can deal with interference of narrow bands with a small interference range and can also deal with interference of wide bands.

Description

A kind of LTE system rejection to disturbance method and apparatus

Technical field

The present invention relates to mobile communication technology field, particularly relate to a kind of LTE system rejection to disturbance method, and a kind of LTE system rejection to disturbance device.

Background technology

LTE (Long Term Evolution, Long Term Evolution) system is a kind of wide-band mobile communication system, be widely used at present, use the electronic equipment of LTE communication standard that the network service of fast and stable can be provided for user, there is receiving velocity high, the feature such as the high and receiver of the availability of frequency spectrum is simple.

The Physical Resource Block (RB) of take on frequency domain in LTE system at present carries out resource distribution as smallest particles degree, and wherein, a RB comprises a plurality of subcarriers.

For broadband system, due to different UE (User Equipment, subscriber equipment) the suffered interference difference of each frequency band in whole bandwidth, therefore, when (Evolved NodeB, eNodeB) carries out scheduling of resource in base station, need to detect the channel quality condition of Whole frequency band, to carry out the selectivity scheduling of frequency band, avoid the frequency band that some is interfered.

For example, SRS (the Sounding Reference Signal that upstream band selectivity scheduling Main Basis UE sends base station, Sounding Reference Signal) and/or DMRS (Demodulated Reference Signal, demodulated reference signal) carry out channel estimating, and by channel estimation results is measured, obtain and send SINR (Signal to Interference and Noise Rate on frequency band, the ratio of signal and interference noise), foundation as band selective scheduling, when dispatch to UE base station, the bandwidth assignment that preferably selection SINR is high is to UE, the frequency of avoid interference signal on frequency domain.

Channel disturbance can be divided into arrowband to be disturbed and broad-band interference, due to affected frequency band distribution wider range under broad-band interference, therefore, adopts such scheme cannot dodge broad-band interference, can only tackle the arrowband that interference range is less and disturb.

Summary of the invention

Technical problem to be solved by this invention is to provide a kind of LTE system rejection to disturbance method, not only can tackle the arrowband that interference range is less and disturb, and can also tackle broad-band interference.

The present invention also provides a kind of LTE system rejection to disturbance device, in order to guarantee said method application and realization in practice.

In order to address the above problem, the invention discloses a kind of LTE system rejection to disturbance method, comprising:

When communication terminal determines that work at present frequency band exists interference, detect the arrival bearing of the interference signal of disturbing described work at present frequency band;

Described communication terminal, according to described arrival bearing, is adjusted at the beam direction receiving on described work at present frequency band, and zero falls into the described interference signal on described arrival bearing.

Preferably, before arrival bearing's the step that detects the interference signal of disturbing described work at present frequency band, described method also comprises:

Judge that described interference is that broad-band interference or arrowband disturb, if described interference is broad-band interference, carries out the arrival bearing's who detects the interference signal of disturbing described work at present frequency band step;

It is that broad-band interference or arrowband interference further comprise that described judgement is disturbed:

In statistics Preset Time section, the number of the interference that each included Physical Resource Block of described work at present frequency band exists;

Extract the Physical Resource Block that exists the number of disturbing to be greater than the 3rd pre-set threshold value, if the number of the Physical Resource Block extracting is greater than the 4th pre-set threshold value, determine that described interference is broad-band interference, if the number of the Physical Resource Block extracting is less than or equal to the 4th pre-set threshold value, determine that described interference is that arrowband disturbs.

Preferably, described method also comprises:

If the arrowband of described interference disturbs, and occur in fixed frequency range, report described base station, by described base station, on the frequency domain of described fixed frequency range, carry out scheduling of resource removing, or report described base station, by described base station, adjust current system bandwidth.

Judge that described interference is to disturb or part-time section of interference all the period of time, if described interference is to disturb all the period of time, carries out the arrival bearing's who detects the interference signal of disturbing described work at present frequency band step;

Described judgement is disturbed and is disturbed still part-time section of interference further to comprise for all the period of time:

Extract the maximum of the number of the interference existing, if the business of described maximum and described Preset Time section is greater than the 5th pre-set threshold value, described interference is to disturb all the period of time, if the business of described maximum and described Preset Time section is less than or equal to the 5th pre-set threshold value, described interference is part-time section of interference.

Preferably, described method also comprises:

If described interference is part-time section of interference and is broad-band interference, record the time that described interference exists, and report described base station, in the time by described base station outside the time of removing described interference existence, carry out scheduling of resource.

Preferably, described method also comprises:

If described interference is part-time section of interference, and be the arrowband interference that described interference signal occurs in fixed frequency range:

Record the time that described interference exists, and report described base station, in the time by described base station outside the time of removing described interference existence, carry out scheduling of resource, and/or, report described base station, in the frequency range by described base station outside removing described fixed frequency range, carry out scheduling of resource;

Or, report described base station, by described base station, adjust current system bandwidth.

Preferably, described method also comprises:

If described interference is the part-time section of frequency unfixed arrowband interference of disturbing and be described interference signal, record the time that described interference exists, and report described base station, in the time by described base station outside the time of removing described interference existence, carry out scheduling of resource.

Preferably, the arrival bearing's of the interference signal of described detection interference work at present frequency band step comprises:

Described communication terminal receives the cell special reference that described base station sends;

According to described cell special reference, the arrival bearing of the interference signal of described work at present frequency band is disturbed in judgement.

Preferably, described communication terminal determines that work at present frequency band exists interference, comprising:

For each included Physical Resource Block of described work at present frequency band, detect Reference Signal Received Power and the Reference Signal Received Quality of described Physical Resource Block;

If certain Physical Resource Block Reference Signal Received Power is not more than the first pre-set threshold value, and described Reference Signal Received Quality is not more than the second pre-set threshold value, the work at present frequency band existence interference at definite described Physical Resource Block place.

Preferably, described method also comprises:

After the Preset Time section of working on described work at present frequency band, described communication terminal jumps to other frequency bands of making an appointment with described base station, be different from described work at present frequency band.

The present invention also provides a kind of LTE system rejection to disturbance device, comprising:

Arrival bearing's detection module, when determining that when communication terminal work at present frequency band exist to disturb, detects the arrival bearing of the interference signal of disturbing described work at present frequency band;

Disturbance null module, according to described arrival bearing, is adjusted at the beam direction receiving on described work at present frequency band for described communication terminal, and zero falls into the described interference signal on described arrival bearing.

Preferably, described device also comprises:

Broad-band interference judge module, for judging that described interference is that broad-band interference or arrowband disturb, if described interference is broad-band interference, carries out arrival bearing's detection module;

Described broad-band interference judge module further comprises:

First disturbs number statistics submodule, for adding up in Preset Time section, and the number of the interference that each included Physical Resource Block of described work at present frequency band exists;

Second value comparer module, for extracting the Physical Resource Block that exists the number of disturbing to be greater than the 3rd pre-set threshold value, if the number of the Physical Resource Block extracting is greater than the 4th pre-set threshold value, determine that described interference is broad-band interference, if the number of the Physical Resource Block extracting is less than or equal to the 4th pre-set threshold value, determine that described interference is that arrowband disturbs.

Preferably, described device also comprises frequency domain dispatching module and bandwidth Zoom module;

Described frequency domain dispatching module, for reporting described base station, carries out scheduling of resource by described base station removing on the frequency domain of described fixed frequency range;

Described bandwidth Zoom module, for reporting described base station, adjusts current system bandwidth by described base station.

Preferably, described broad-band interference judge module, if also for determining that described interference arrowband disturbs, and occurs in fixed frequency range, carries out described frequency domain dispatching module or bandwidth Zoom module.

Preferably, described device also comprises:

All the period of time is disturbed judge module, for judging that described interference is to disturb or part-time section of interference all the period of time, if described interference is to disturb all the period of time, carries out arrival bearing's detection module;

Described all the period of time disturbs judge module further to comprise:

Second disturbs number statistics submodule, for adding up in Preset Time section, and the number of the interference that each included Physical Resource Block of described work at present frequency band exists;

Third value comparer module, for extracting the maximum of number of the interference of existence, if the business of described maximum and described Preset Time section is greater than the 5th pre-set threshold value, described interference is to disturb all the period of time, if the business of described maximum and described Preset Time section is less than or equal to the 5th pre-set threshold value, described interference is part-time section of interference.

Preferably, described device also comprises time domain scheduler module;

Described time domain scheduler module, for reporting described base station, carries out scheduling of resource in the time by described base station outside the time of removing described interference existence.

Preferably, described all the period of time is disturbed judge module, also for being disturb all the period of time or when part-time section is disturbed, carry out broad-band interference judge module in described interference;

Described broad-band interference judge module, also for being to disturb all the period of time in definite described interference, and described interference is broad-band interference, carries out described arrival bearing's detection module;

Described broad-band interference judge module, also for being to disturb all the period of time in definite described interference, and described interference is that the arrowband that interference signal occurs in fixed frequency range disturbs, and carries out described frequency domain dispatching module or bandwidth Zoom module;

Described broad-band interference judge module, also for after being part-time section of interference in definite described interference, if determine, described interference is broad-band interference, carries out described time domain scheduler module;

Described broad-band interference judge module, also for after being part-time section of interference in definite described interference, if determine, described interference is the arrowband interference that interference signal occurs in fixed frequency range, carries out described time domain scheduler module and/or frequency domain dispatching module, or bandwidth Zoom module;

Described broad-band interference judge module, also for after being part-time section of interference in definite described interference, the unfixed arrowband of frequency that described interference is interference signal if determine disturbs, and carries out described time domain scheduler module.

Preferably, described arrival bearing's detection module comprises:

Reference signal receives submodule, for described communication terminal, receives the cell special reference that described base station sends;

Reference signal is analyzed submodule, for according to described cell special reference, judges the arrival bearing of the interference signal of disturbing described work at present frequency band.

Preferably, also comprise interference determination module, for described communication terminal, determine that work at present frequency band exists interference;

Described interference determination module comprises:

Accepting state detection sub-module, for for each included Physical Resource Block of described work at present frequency band, detects Reference Signal Received Power and the Reference Signal Received Quality of described Physical Resource Block;

The first numeric ratio is to submodule, if be not more than the first pre-set threshold value for certain Physical Resource Block Reference Signal Received Power, and described Reference Signal Received Quality is not more than the second pre-set threshold value, determine that the work at present frequency band at described Physical Resource Block place exists interference.

Preferably, described device also comprises:

Frequency hopping module, after the Preset Time section of working on described work at present frequency band, described communication terminal jumps to other frequency bands of making an appointment with described base station, be different from described work at present frequency band.

Compared with prior art, the present invention has the following advantages:

According to the embodiment of the present invention, communication terminal determines that work at present frequency band exists after interference, further detect the arrival bearing of interference signal, according to arrival bearing zero, fall into interference signal, not only can tackle the arrowband that interference range is less disturbs, also can tackle the broad-band interference of frequency band distribution wider range, and, for TD-LTE system (Time Division Long Term Evolution, time-division Long Term Evolution), by up-downgoing heterogeneite, the interference avoidance that also can be up channel provides foundation.

According to the embodiment of the present invention, can also adopt respectively different processing modes for dissimilar interference, when can tackling various dissimilar interference, can reduce as much as possible the load of communication terminal, reduce the waste of resource.

Accompanying drawing explanation

Fig. 1 is the flow chart of a kind of LTE system rejection to disturbance of the present invention embodiment of the method 1;

Fig. 2 is the flow chart of a kind of LTE system rejection to disturbance of the present invention embodiment of the method 2;

Fig. 3 is the flow chart of a kind of LTE system rejection to disturbance of the present invention embodiment of the method 3;

Fig. 4 is the flow chart of LTE system rejection to disturbance method in an example of the embodiment of the present invention;

Fig. 5 detects the method existing of disturbing in an example of the embodiment of the present invention;

Fig. 6 is the structured flowchart of a kind of LTE system rejection to disturbance of the present invention device embodiment 1;

Fig. 7 is the structured flowchart of a kind of LTE system rejection to disturbance of the present invention device embodiment 2;

Fig. 8 is the structured flowchart of a kind of LTE system rejection to disturbance of the present invention device embodiment 3.

Embodiment

For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.

With reference to figure 1, show the flow chart of a kind of LTE system rejection to disturbance embodiment of the method 1 of the present invention, specifically can comprise the following steps:

Step 101, when communication terminal determines that work at present frequency band exist to disturb, detect the arrival bearing of the interference signal of disturbing described work at present frequency band.

After communication terminal (UE) access LTE network, the detection of up channel or down channel can be triggered in base station, when UE need to be scheduled, select suitable frequency domain resource to distribute to UE, for carrying out the transmission of upstream data or downlink data, work at present frequency band refers to the system bandwidth that LTE system is current, is the whole frequency band of communication terminal work at present.

After communication terminal is determined on work at present frequency band and to be existed and disturb, further detect the arrival bearing of interference signal.In the embodiment of the present invention, can adopt any available mode in prior art to detect the arrival bearing of interference signal.Because LTE system adopts intelligent antenna technology more, UE can carry out arrival bearing's detection in the downlink path of smart antenna.

A kind of bilateral antenna that is arranged on scene, base station of smart antenna, claims again adaptive antenna array, variable antenna array, many antennas.Smart antenna is to utilize the space characteristics difference between the different user of sharing same channel resource to realize channel multiplication in essence, use the user of same channel, same time slot and same code word as long as the space characteristics of signal is different, just can realize by airspace filter the separation of subscriber signal.The signal receiving by a plurality of aerial arrays carries out the weighting of width phase, obtains needed controlling antenna wave beam to point, separated with implementation space.Compare with non-directional antenna, it is up, the antenna gain of down link improves greatly, has reduced transmitted power level, has improved signal to noise ratio, has effectively overcome the impact of transmission decline.

Arrival bearing that can estimated disturbance signal according to the cell special reference of the down channel at the interference signal place receiving.

Step 102, communication terminal, according to arrival bearing, are adjusted at the beam direction receiving on work at present frequency band, and zero falls into the interference signal on arrival bearing.

Interference signal incoming wave detected and have after directivity, can adjust communication terminal at the beam direction of the reception of work at present frequency band, by adjusting the mode of descending received beam figuration, avoid interference the interference of signal.

Particularly, wave beam forming (Beam Forming, BF) be one of the core technology of smart antenna, it is a kind of Digital Signal Processing of realizing in a plurality of aerial arrays, utilize useful signal and interference signal at arrival bearing DOA (Directional of Arricial, the angle of arrival) difference in space channel characteristic such as, by aerial array being arranged to suitable weighted value, spatially isolate useful signal and interference signal, realize and reduce inter-user interference, the object of capacity.

The maximum principle of the power of beamforming algorithm based on uplink receiving signal, is not having in noisy situation, adopt this algorithm can obtain good performance, but in the situation that there is interference, the received signal of communication terminal will be affected.

In the embodiment of the present invention, the object avoiding interference is all interference signals of the zero sunken arrival bearing who detects, when adjusting descending received beam figuration, for aerial array, reset weighted value, adjust the direction of received beam, make down beam shaping be positioned at the kernel of interference signal vector matrix, the weighted value of interference signal direction is zero, zero sunken interference signal.

According to the embodiment of the present invention, not only can tackle the arrowband that interference range is less disturbs, broad-band interference for frequency band distribution wider range, also can find the arrival bearing of its interference signal, by adjusting the direction of received beam, zero falls into the wider interference signal of frequency band range, and, than prior art, for TD-LTE system, the embodiment of the present invention does not need to analyze the signal quality of up channel or down channel, therefore not only can be applied in the interference avoidance of up channel, can be applied in the interference avoidance of down channel yet.

In the embodiment of the present invention, further preferred, communication terminal can determine that work at present frequency band exists interference by detecting the accepting state of reference signal on current frequency band.

Reference signal (Reference Signal, RS), also be referred to as pilot signal, it is the physical signalling of LTE protocol definition, to offer receiving terminal for a kind of signal of channel estimating or channel detection by transmitting terminal, reference signal itself is not carried data, for example, the up employing Single Carrier Frequency Division Multiple Access of LTE (Frequency Division Multiple Address, frequency division multiple access) technology, reference signal and upstream data are to adopt TDM (Time-Division Multiplexing, time division multiplexing) mode multiplexing together.

In LTE system, UE sends uplink reference signals to base station, uplink reference signals is divided into Sounding Reference Signal (SRS) and demodulated reference signal (DMRS) etc., base station sends downlink reference signal to UE, downlink reference signal is divided into cell special reference (Cell-Specific Reference Signal, CRS), UE DRS (Dedicated Reference Signal) and MBSFN (Multicast Broadcast Single Frequency Network, multicast single frequency network) DRS (Dedicated Reference Signal) etc.

In actual network environment, the reference signal of Serving cell is mainly subject to two parts and disturbs, a part is the interference to the reference signal of Serving cell from the reference signal of abutting subdistrict, and another part is the interference to the reference signal of Serving cell from the downlink physical data channel of abutting subdistrict.

By the accepting state of reference signal detection, can determine on work at present frequency band, whether there is interference.Because the bandwidth of LTE system be take RB as tolerance, RB is bandwidth unit minimum in LTE system, therefore, for the measurement of reference signal, refers to that terminal measures the reference signal on a plurality of RB.

Particularly, for downlink reference signal, UE can detect the downlink reference signal receiving on a plurality of RB in the downstream bands of base station assigns, because uplink reference signals sends to base station by UE, UE cannot directly carry out direct-detection to the accepting state of uplink reference signals, therefore can be detected by base station the accepting state of uplink reference signals, by base station, according to Analysis of test results, whether exist and disturb and analysis result is fed back to UE.

Whether according to the accepting state analysis of the upper reference signal of RB, exist the method for interference can adopt any method of prior art, the present invention does not limit this.

Preferably, step 101 can comprise:

Sub-step S11, for each included Physical Resource Block of work at present frequency band, detect Reference Signal Received Power and the Reference Signal Received Quality of Physical Resource Block;

If the Reference Signal Received Power of certain Physical Resource Block of sub-step S12 is not more than the first pre-set threshold value, and Reference Signal Received Quality is not more than the second pre-set threshold value, the work at present frequency band existence interference at definite Physical Resource Block place.

After communication terminal access LTE network, base station can be to the UE sending measuring configuration information in connected state, to inform that UE is about relevant informations such as current measuring object, report configurations, comprising triggering the configuration of measuring.According to LTE36.331 agreement, when base station configures to UE sending measuring at present, trigger to measure and have two options, be RSRP (Reference Signal Receiving Power, Reference Signal Received Power) and RSRQ (Reference Signal Receiving Quality, Reference Signal Received Quality).If the value of RSRP of UE measurement gained and the value of RSRQ meet the particular kind of relationship with its corresponding thresholding, UE can inform measurement result to base station reporting measurement reports, so that next step operation is carried out in base station according to the information decision of measurement report, for example, if the event that the measurement report that UE reports is corresponding is to switch relevant event, switching flow will be initiated in base station.

RSRP be the reference signal of base station in the performance number at UE place, UE can infer channel situation according to this RSRP, RSRP numerical value more channel is better, otherwise poor, same, RSRQ numerical value more channel is better, otherwise poor.In the embodiment of the present invention, UE detects after the value of RSRP and the value of RSRQ of each Physical Resource Block, both values can be compared with preset value respectively, and judge according to comparative result whether work at present frequency band exists interference.In the embodiment of the present invention, the first pre-set threshold value and the second pre-set threshold value are set, when the value that is not more than (being less than or equal to) first pre-set threshold value and RSRQ when the value of the RSRP of certain Physical Resource Block is not more than the second pre-set threshold value, the work at present frequency band of determining Physical Resource Block place exists and disturbs.

In the embodiment of the present invention, further preferred, step 102 can comprise:

Sub-step S21, communication terminal receive the cell special reference that base station sends.

Sub-step S22, according to cell special reference, the arrival bearing of the interference signal of work at present frequency band is disturbed in judgement.

Arrival bearing estimates to adopt existing MUSIC (multiple signal classification algorithm) algorithm and ESPRIT (by ESPRIT estimated signal parameter) algorithm etc.The most classical super-resolution DOA method of estimation is MUSIC algorithm, its basic thought is that the covariance matrix that aerial array is exported to data carries out Eigenvalues Decomposition, thereby obtain the just crossing noise subspace of the signal subspace corresponding with signal component and signal component, then utilize the orthogonality of this two sub spaces to carry out the direction of estimated signal; ESPRIT algorithm is the algorithms most in use that a kind of arithmetic speed is very fast, estimation accuracy is higher, utilizes the covariance matrix of two identical translation array received signals to carry out generalized eigenvalue decomposition, and then obtains the high-resolution estimation of target direction of arrival.

In concrete realization, base station can receive the arrival bearing of the interference signal that a plurality of terminals upload respectively, the signal strength signal intensity of the terminal in community diverse location is different, the received dtr signal of terminal in boundary, the interference signal direction of its detection is also unreliable, therefore, can for the terminal in diverse location, different confidence levels be set in advance, for example, signal in community is better divided into 6 grades with poor position, for the good position of signal, higher confidence level is set, for the good position of signal, lower confidence level is set, the degree of reliability of the reporting information by terminal in diverse location is carried out to quantitative management.

For there being each RB on the frequency band disturbing on frequency band, add up the situation of each terminal each terminal return on this RB, for example, 10 terminals of having worked on certain community, there is interference in 8 terminal to report wherein on this RB, first respectively the position range under it according to 8 residing location positionings of terminal, using the confidence level as this terminal for the definite confidence level of this position range, the confidence level of 8 terminals is added and, 2 terminals that do not report are designated as 0, for each RB statistics, if be greater than preset value, can further according to the type of disturbing, carry out the processing of interference avoidance, otherwise, do not deal with, thereby can carry out more accurately interference avoidance.

In down channel, the signal of this base station that communication terminal receives, it is man-to-man relation, can carry out the estimation of interference radiating way, in the embodiment of the present invention, can carry out the estimation of interference radiating way by detecting descending cell special reference, determine the arrival bearing of the interference signal of downstream bands.And in up channel, base station receives the signal from the communication terminal of a plurality of different directions, cannot carry out the estimation of interference radiating way.In various LTE systems, the up-downgoing channel of TD-LTE system communicates on same frequency band.Therefore, by up-downgoing heterogeneite, the interference avoidance that also can be up channel provides foundation, can be using definite down channel interference radiating way as up channel interference radiating way for TD-LTE.

With reference to figure 2, show the flow chart of a kind of LTE system rejection to disturbance embodiment of the method 2 of the present invention, specifically can comprise the following steps:

Step 201, communication terminal determine that work at present frequency band exists interference.

Step 202, judgement disturb as broad-band interference or arrowband disturbs, if broad-band interference performs step 203, if arrowband disturbs, performs step 205.

In the present embodiment, before detecting the arrival bearing of interference signal, can first be defined as broad-band interference or arrowband disturbs, if broad-band interference, select by zero mode that falls into interference signal and avoid interference, if arrowband disturbs, can adopt other modes that avoid interference, for example the mode of the selectivity of background technology midband scheduling.

Further preferably, step 202 can comprise:

In sub-step S31, statistics Preset Time section, the number of the interference that each included Physical Resource Block of work at present frequency band exists.

Sub-step S32, extraction exist the number of disturbing to be greater than the Physical Resource Block of the 3rd pre-set threshold value, if the number of the Physical Resource Block extracting is greater than the 4th pre-set threshold value, determine and disturb as broad-band interference, if the number of the Physical Resource Block extracting is less than or equal to the 4th pre-set threshold value, determines and disturb as disturbing by arrowband.

Determine that work at present frequency band exists after interference, judge respectively whether each Physical Resource Block exists interference, and add up respectively in Preset Time section, the number of the interference that each Physical Resource Block exists.

When existing the number of the Physical Resource Block disturbing and the number of the interference that each Physical Resource Block exists to surpass certain thresholding, can think and disturb as broad-band interference.

Can be for existing the number of the Physical Resource Block disturbing that the 3rd pre-set threshold value is set, the number of the interference existing for each Physical Resource Block arranges the 4th pre-set threshold value, when the number that exists the number of disturbing to be greater than the Physical Resource Block of the 4th pre-set threshold value is greater than the 3rd pre-set threshold value, determine and disturb as broad-band interference, when judgement, first judge Physical Resource Block exists the number of disturbing whether to be greater than the 3rd pre-set threshold value, the Physical Resource Block that is greater than the 3rd pre-set threshold value is found out, and the number of adding up the Physical Resource Block finding out, if number is greater than the 4th pre-set threshold value, determine and disturb as broad-band interference, if the number of the Physical Resource Block extracting is less than or equal to the 4th pre-set threshold value, determine and disturb as disturbing by arrowband.

The arrival bearing that the interference signal of work at present frequency band is disturbed in step 203, detection.

Step 204, communication terminal, according to arrival bearing, are adjusted at the beam direction receiving on work at present frequency band, and zero falls into the interference signal on arrival bearing.

In concrete realization, may there is no the reasons such as directivity or signal be weak because of interference signal, inspection does not measure the arrival bearing of interference signal, can be left intact, and waits for the frequency domain that next hop period is avoided being interfered by the mode of frequency hopping.

If step 205 arrowband disturbs, occur in fixed frequency range, reporting base station, carries out scheduling of resource by base station removing on the frequency domain of fixed frequency range, or reporting base station, by base station, adjusts current system bandwidth.

In the frequency domain dispatching of step 205 and bandwidth convergent-divergent, during reporting base station, can to base station, send the type of interference and the position of interference, that by base station, further according to this information, is disturbed dodges.

In last embodiment, no matter disturb can be by detecting the arrival bearing of interference signal for broad-band interference and arrowband, zero falls into interference signal, different from last embodiment is, in the present embodiment, for broad-band interference and arrowband, disturb and adopt different processing modes, arrowband disturbs can adopt the mode avoid interference frequency range of dodging by frequency domain dispatching in prior art, also can be by change system bandwidth avoid interference frequency range, base station time-frequency scheduling can only allow shared channel avoid being disturbed, in background technology, by SINR, carry out frequency band selection, also can only be for the interference avoidance of shared channel, by contrast, change system bandwidth can be for shared channel, also can allow PCFICH (Physical Control Format Indicator Channel, Physical Control Format Indicator Channel), PHICH (Physical Hybrid ARQ Indicator Channel, physical mixed automatic re-transmission indicating channel), PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel), PUCCH (Physical Uplink Control CHannel, physical uplink control channel) etc. control channel is also avoided being disturbed.Particularly, when interference signal is that the arrowband that occurs in fixed frequency range is when disturb, when frequency domain resource scheduling, the frequency domain that can directly avoid this frequency range carries out scheduling of resource, now communication terminal can re-start PDSCH channel (Physical Downlink Shared Channel by reporting base station, Physical Downlink Shared Channel), PUSCH channel (PUSCH Physical Uplink Shared Channel, Physical Uplink Shared Channel) scheduling of resource, Resources allocation on the frequency domain not being interfered, make system works in undisturbed frequency range, be the frequency domain resource that communication terminal dispenses this fixed frequency range.Also can reporting base station panntographic system bandwidth, by base station, adjusted the bandwidth of current system, the frequency domain of avoiding being interfered.

In concrete realization, if determine, disturb as arrowband disturbs, but also the arrowband of on-fixed period disturbs, and can adopt the mode of dodging of broad-band interference to process, can not process, wait for that next hop period avoids receiving the frequency domain of interference by the mode of frequency hopping yet.

In the embodiment of the present invention, preferably, can also comprise:

Communication terminal jumps to other frequency bands of making an appointment with base station, be different from work at present frequency band.

Communication terminal can avoid interference effect of signals by jumping to other frequency bands that are different from work at present frequency band, in concrete realization, it is the random frequency hopping that has certain rule that frequency hopping is processed, can, according to jumping on other frequency bands of appointment with the frequency hopping pattern (hopping pattern) of base station agreement, also can take other mode to carry out frequency hopping.

In concrete realization, this step can be carried out after determining the step that the existence of work at present frequency band is disturbed, also can before determining the step that the existence of work at present frequency band is disturbed, carry out, preferably rear a kind of mode in the embodiment of the present invention, reason is to avoid long interference signal to affect by frequency hopping, the oversize impact that communication terminal is brought with communicating by letter of base station of the time that avoids interference.

Frequency hopping needs base station and communication terminal synchronising frequency hopping, and base station and communication terminal are all provided with GPS (Global Positioning System, global positioning system) clock, can carry out synchronising frequency hopping in the time of both sides' agreement.

In the present embodiment, changed the mode that all adopts zero sunken interference signal in embodiment 1 for various types of interference, can disturb and adopt different processing modes to process for broad-band interference and arrowband, when can tackling better dissimilar interference, can reduce as much as possible the load of communication terminal, reduce the waste of resource.

Wherein, for broad-band interference, communication terminal determines that work at present frequency band exists after interference, further detects the arrival bearing of interference signal, according to arrival bearing zero, falls into interference signal, not only can tackle the arrowband that interference range is less disturbs, also can tackle the broad-band interference of frequency band distribution wider range, and, for TD-LTE system, by up-downgoing heterogeneite, the interference avoidance that also can be up channel provides foundation.

With reference to figure 3, show the flow chart of a kind of LTE system rejection to disturbance embodiment of the method 3 of the present invention, specifically can comprise the following steps:

Step 301, communication terminal determine that work at present frequency band exists interference.

Step 302, judgement are disturbed as all the period of time interference or part-time section of interference, if all the period of time is disturbed, perform step 303, if part-time section of interference performs step 304.

Different from last embodiment, in the present embodiment, also whether judgement interference is to disturb all the period of time, for all the period of time, disturbs with part-time section of interference and adopts different processing modes.

Preferably, determine that the step that all the period of time disturbs can comprise:

In sub-step S41, statistics Preset Time section, the number of the interference that each included Physical Resource Block of work at present frequency band exists.

The maximum of the number of the interference that sub-step S42, extraction exist, if the business of maximum and Preset Time section is greater than the 5th pre-set threshold value, disturb as all the period of time interference, if the business of described maximum and described Preset Time section is less than or equal to the 5th pre-set threshold value, described interference is part-time section of interference.

All the period of time is disturbed and refers to all existence interference within the most of the time of communication terminal statistics.In the embodiment of the present invention, whether the number by the interference in Preset Time section surpasses certain thresholding determines whether that all the period of time disturbs, by adding up the number of the existing interference of each Physical Resource Block, find out maximum wherein, maximum and Preset Time section are divided by, Shang Yue great, illustrate that, in Preset Time section, the number of the interference existing on this frequency band is more, disturbing may be more to disturb all the period of time, if business surpasses the 5th pre-set threshold value, be defined as all the period of time interference.

Step 303, definite interference as after all the period of time interference, further judgement interference, for broad-band interference or arrowband interference, if broad-band interference performs step 305, if arrowband disturbs, performs step 307.

Step 304, definite interference as after part-time section of interference, further judge interference for broad-band interference or arrowband disturbs, if broad-band interference performs step 308, if arrowband disturbs, performs step 309.

The arrival bearing that the interference signal of work at present frequency band is disturbed in step 305, detection.

Step 306, communication terminal, according to arrival bearing, are adjusted at the beam direction receiving on work at present frequency band, and zero falls into the interference signal on arrival bearing.

If the interference signal that step 307 arrowband disturbs occurs in fixed frequency range, reporting base station, carries out scheduling of resource by base station removing on the frequency domain of fixed frequency range, or reporting base station, by base station, adjusts current system bandwidth.

Step 308, record disturb the time existing, and reporting base station, by base station, within the time of removing outside the time of disturbing existence, carry out scheduling of resource.

Step 308 time domain scheduling in, the type that can send disturb to base station during reporting base station and the position of interference, that by base station, further according to this information, is disturbed dodges.

Obtained and disturbed after the time existing, can be dodging of disturbing in several ways of this time, some disturbing as part-time section of interference, can be preferably according to disturbing the time existing to carry out jamproof processing, disturbing the non-existent time not need to do any processing, thereby can reduce the Processing tasks of communication terminal, alleviate the load of communication terminal, economize on resources.

In the embodiment of the present invention, preferably, can by time domain scheduling mode dodge, by communication terminal reporting base station, disturb the time existing, by base station, within the time of removing outside the time of disturbing existence, carry out scheduling of resource, thus the time of avoiding being interfered, and this anti-interference mode is very simple, without communication terminal, carry out other processing, can alleviate the load of communication terminal.

Owing to determining after interference, the time that may disturb passes by, herein, disturb the time existing specifically to refer to and disturb the periodic time existing, particularly, obtain after the time of current interference existence, by base station, further judge in which subframe, radio frames or longer time section, whether have rule row interference time, if exist, disturbing in the periodic time existing, remove interfering subframe, radio frames or longer time section, carry out interference avoidance.

Whether step 309, further judgement are disturbed is the arrowband interference that interference signal occurs in fixed frequency range, some arrowbands that occur in fixed frequency range for interference signal of disturbing disturb, perform step 310, some unfixed arrowbands of frequency of disturbing as interference signal disturb, and perform step 311.

Step 310, record disturb the time existing, and reporting base station, by base station, within the time of removing outside the time disturb existing, carry out scheduling of resource and/or removing and in the frequency range outside fixed frequency range, carrying out scheduling of resource, or reporting base station, by base station, adjust current system bandwidth.

Some disturbing as part-time section of interference, and disturb for occurring in the arrowband of fixed frequency range, the arrowband that occurs in fixed frequency range due to interference disturbs, can preferably adopt the mode of frequency domain dispatching or bandwidth convergent-divergent anti-interference, owing to disturbing as part-time section of interference, can adopt time domain scheduling mode anti-interference.

Particularly, during employing, during the mode of domain scheduling, communication terminal record disturbs the time existing, and determines interference type, by base station, carries out scheduling of resource removing in the time of disturbing outside the time existing, thus the time of avoiding being interfered.While adopting the mode of frequency domain dispatching, base station re-starts scheduling of resource, is not receiving Resources allocation on the frequency domain of interference, system works is not being received in the frequency range of disturbing, base station also can panntographic system bandwidth, is adjusted the bandwidth of current system by base station, avoids receiving the frequency domain of interference.

Step 311, record disturb the time existing, and reporting base station carries out scheduling of resource by base station within the time of removing outside the time of disturbing existence.

Some disturbing as part-time section of interference, and be the frequency unfixed arrowband interference of interference signal, cannot adopt the mode of frequency domain dispatching anti-interference, the mode of domain scheduling in the time of can preferably adopting, the time of avoiding being interfered.

In the present embodiment, changed the mode that all adopts zero sunken interference signal in embodiment 1 for various types of interference, can first determine the type of disturbing, for broad-band interference and arrowband, disturb, and all the period of time is disturbed and the dissimilar interference such as part-time section of interference adopts different processing modes to process, when can tackling various dissimilar interference, can reduce as much as possible the load of communication terminal, reduce the waste of resource.

According to embodiment, broad-band interference for all the period of time, communication terminal determines that work at present frequency band exists after interference, further detects the arrival bearing of interference signal, according to arrival bearing zero, falls into interference signal, not only can tackle the arrowband that interference range is less disturbs, also can tackle the broad-band interference of frequency band distribution wider range, and, for TD-LTE system, by up-downgoing heterogeneite, the interference avoidance that also can be up channel provides foundation.

In order to make the clearer and more definite this programme of those skilled in the art, by concrete example, the LTE system rejection to disturbance method of the embodiment of the present invention is described, the flow chart that has provided LTE system rejection to disturbance method in an example of the embodiment of the present invention with reference to figure 4, specifically can comprise the steps:

Step 1, execution processing method 3.

Step 2, execution detection method 1.

Whether step 3, judgement are disturbed is to disturb all the period of time, if all the period of time is disturbed, performs step 4, if part-time section of interference performs step 12.

Step 4, further determine whether broad-band interference, if all the period of time broad-band interference, perform step 5, if all the period of time arrowband disturb, perform step 9.

Step 5, execution detection method 3.

Step 6, judge whether interference signal has directivity, if interference signal has directivity to perform step 7, if interference signal does not have directivity, perform step 8.

Step 7, execution processing method 4.

Step 8, be left intact, wait for next hop period.

Step 9, determine whether that fixed narrow disturbs, if fixed narrow is disturbed, perform step 10, if not fixed narrow is disturbed, perform step 11.

Step 10, execution processing method 2 or 5.

Step 11, be left intact, wait for next hop period.

Step 12, further determine whether broad-band interference, if part-time section of broad-band interference performs step 13, if part-time section of arrowband disturbs, perform step 14.

Step 13, execution processing method 1.

Step 14, further determine whether that fixed narrow disturbs, if part-time section of fixed narrow disturbed, perform step 15, if part-time section of on-fixed arrowband disturbs, perform step 16.

Step 15, execution processing method 1 and/or 2, or 5.

Step 16, execution processing method 1.

Wherein, each detection method and processing method are described as follows:

Detection method 1: judge whether work at present frequency band exists interference, as shown in Figure 5, provided and detected the method existing of disturbing in an example of the embodiment of the present invention.

As shown in Figure 5, calculate RSRP and the RSRQ of certain RB, when RSRP and RSRQ are compared with pre-set threshold value respectively, can first judge whether RSRP is greater than the first pre-set threshold value thd1, if, determine and do not have interference, if not, further judge whether RSRQ is greater than the second pre-set threshold value thd2, if, determine and do not have interference, if not, determine to exist and disturb.

Detection method 2:UE detects and disturbs DOA

The DOA that UE carries out descending interference signal by downlink smart antenna CRS estimates, judges and disturbs whether have directivity.

Disturb to process 1: time domain scheduling dodge.

Disturb and process 2: frequency domain dispatching is dodged.

Disturb and process 3: frequency hopping is processed, and by jumping to other frequencies, avoids long interference signal to affect.

Disturb and process 4: the interference arrival bearing who detects according to detection method 2, adjust the beam direction that the descending BF of UE receives, zero falls into interference radiating way signal.

Disturb to process 5: search the frequency range not being interfered, panntographic system bandwidth, is not receiving in the frequency range of disturbing system works, the impact that will no longer be interfered of up like this, down channel.

Wherein, when distinguishing broad-band interference and arrowband interference, can there is the number of disturbing by the every RB of timing statistics T interior (take 0.5ms as statistical unit), be made as Sum_J (n), n=1～N wherein, N is the frequency domain RB number comprising in system bandwidth, if be greater than the number Num_B of thresholding thd3 in Sum_J (1～N), be greater than thresholding thd4, can determine so and disturb as frequency domain broad-band interference, otherwise, for arrowband disturbs.

Distinguishing that all the period of time is disturbed and during part-time section of interference, can judge the ratio of maximum and the Preset Time section of Sum_J (n), for example max (Sum_J)/(T/0.5ms), when ratio is greater than thresholding thd5, for all the period of time is disturbed, otherwise, be part-time section of interference.

For embodiment of the method, for simple description, therefore it is all expressed as to a series of combination of actions, but those skilled in the art should know, the present invention is not subject to the restriction of described sequence of movement, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in specification all belongs to preferred embodiment, and related action and module might not be that the present invention is necessary.

With reference to figure 6, show the structured flowchart of a kind of LTE system rejection to disturbance device embodiment 1 of the present invention, specifically can comprise with lower module:

Arrival bearing's detection module 401, when determining that when communication terminal work at present frequency band exist to disturb, detects the arrival bearing of the interference signal of disturbing work at present frequency band.

Disturbance null module 402 is connected with arrival bearing's detection module 401, and disturbance null module 402 according to arrival bearing, is adjusted at the beam direction receiving on work at present frequency band for communication terminal, and zero falls into the interference signal on arrival bearing.

In the embodiment of the present invention, arrival bearing's detection module comprises:

Reference signal receives submodule, for communication terminal, receives the cell special reference that base station sends.

Reference signal is analyzed submodule and is connected with disturbance null module 402 with reference signal reception submodule, and reference signal is analyzed submodule for according to cell special reference, judges the arrival bearing of the interference signal of disturbing work at present frequency band.

According to the embodiment of the present invention, communication terminal determines that work at present frequency band exists after interference, further detect the arrival bearing of interference signal, according to arrival bearing zero, fall into interference signal, not only can tackle the arrowband that interference range is less and disturb, also can tackle the broad-band interference of frequency band distribution wider range, and, for TD-LTE system, by up-downgoing heterogeneite, the interference avoidance that also can be up channel provides foundation.

With reference to figure 7, show the structured flowchart of a kind of LTE system rejection to disturbance device embodiment 2 of the present invention, specifically can comprise with lower module:

Disturb determination module 501, for communication terminal, determine that work at present frequency band exists interference.

Broad-band interference judge module 502 is connected with disturbing determination module 501, broad-band interference judge module 502 disturbs as broad-band interference for determining, if determine, disturb as broad-band interference, carry out arrival bearing's detection module 503 and disturbance null module 504, if determine, disturb as disturbing by arrowband, and occur in fixed frequency range, carry out frequency domain dispatching module 505 or bandwidth Zoom module 506.

Arrival bearing's detection module 503 is connected with broad-band interference judge module 502, and arrival bearing's detection module 503 is for detection of the arrival bearing who disturbs the interference signal of work at present frequency band.

Disturbance null module 504 is connected with arrival bearing's detection module 503, and disturbance null module 504 according to arrival bearing, is adjusted at the beam direction receiving on work at present frequency band for communication terminal, and zero falls into the interference signal on arrival bearing.

Frequency domain dispatching module 505 is connected with broad-band interference judge module 502, and frequency domain dispatching module 505 is for reporting base station, by base station, carries out scheduling of resource removing on the frequency domain of fixed frequency range.

Bandwidth Zoom module 506 is connected with broad-band interference judge module 502, and bandwidth Zoom module 506, for reporting base station, is adjusted current system bandwidth by base station.

In the embodiment of the present invention, preferably, disturb determination module 501 to comprise:

Accepting state detection sub-module, for for each included Physical Resource Block of work at present frequency band, detects Reference Signal Received Power and the Reference Signal Received Quality of Physical Resource Block.

The first numeric ratio is connected with arrival bearing's detection module 502 with accepting state detection sub-module submodule, if the first numeric ratio is not more than the first pre-set threshold value to submodule for certain Physical Resource Block Reference Signal Received Power, and Reference Signal Received Quality is not more than the second pre-set threshold value, determine that the work at present frequency band at Physical Resource Block place exists interference.

In the embodiment of the present invention, preferably, broad-band interference judge module 502 further comprises:

First disturbs number statistics submodule to be connected with disturbing determination module 501, and first disturbs number statistics submodule to be used for adding up in Preset Time section, the number of the interference that each included Physical Resource Block of work at present frequency band exists;

Second value comparer module and first disturbs number statistics submodule to be connected with arrival bearing's detection module 503, second value comparer module is for extracting the Physical Resource Block that exists the number of disturbing to be greater than the 3rd pre-set threshold value, if the number of the Physical Resource Block extracting is greater than the 4th pre-set threshold value, determine and disturb as broad-band interference, if the number of the Physical Resource Block extracting is less than or equal to the 4th pre-set threshold value, determine that described interference is that arrowband disturbs.

In the embodiment of the present invention, preferably, can also comprise frequency hopping module, after the Preset Time section of working on described work at present frequency band, described communication terminal jumps to other frequency bands of making an appointment with described base station, be different from described work at present frequency band.

With reference to figure 8, show the structured flowchart of a kind of LTE system rejection to disturbance device embodiment 3 of the present invention, specifically can comprise with lower module:

Disturb determination module 601, for communication terminal, determine that work at present frequency band exists interference.

All the period of time interference judge module 602 is connected with disturbing determination module 601, and all the period of time interference judge module 602 is all the period of time interference for definite interference, when disturbing as all the period of time interference or part-time section of interference, carries out broad-band interference judge module.

Broad-band interference judge module 603 disturbs judge module 602, arrival bearing's detection module 604, frequency domain dispatching module 606, bandwidth Zoom module 607 to be connected with time domain scheduler module 608 with all the period of time, broad-band interference judge module 603 disturbs as broad-band interference for determining, and determining that interference is for all the period of time interference, and disturb as broad-band interference, carry out arrival bearing's detection module 604; Determining that interference is for all the period of time interference, and disturbing the arrowband interference that occurs in fixed frequency range for interference signal, carrying out frequency domain dispatching module 606 or bandwidth Zoom module 607; After determining that interference is part-time section of interference, if determine, disturb as broad-band interference, carry out time domain scheduler module 608; Determining that interference is for after part-time section of interference, if definite interference is for disturbing by the arrowband that interference signal occurs in fixed frequency range, carry out time domain scheduler module 608 and/or frequency domain dispatching module 606, or bandwidth Zoom module 607; Determining that interference is for after part-time section of interference, if determine, disturbing the frequency unfixed arrowband interference for interference signal, carrying out time domain scheduler module 608.

Arrival bearing's detection module 604 is connected with broad-band interference judge module 603, and arrival bearing's detection module 604 is for detection of the arrival bearing who disturbs the interference signal of work at present frequency band.

Disturbance null module 605 is connected with arrival bearing's detection module 604, and disturbance null module 605, for according to arrival bearing, is adjusted the beam direction that communication terminal receives on work at present frequency band, and zero falls into the interference signal on arrival bearing.

Frequency domain dispatching module 606 is connected with broad-band interference judge module 603, and frequency domain dispatching module 606 is for reporting base station, by base station, carries out scheduling of resource removing on the frequency domain of fixed frequency range;

Bandwidth Zoom module 607 is connected with broad-band interference judge module 603, and bandwidth Zoom module 607, for reporting base station, is adjusted current system bandwidth by base station.

Time domain scheduler module 608 is connected with broad-band interference judge module 603, and time domain scheduler module 608, for reporting base station, is carried out scheduling of resource by base station within the time of removing outside the time of disturbing existence.

In the embodiment of the present invention, further preferably, all the period of time disturbs judge module 602 may further include:

Second disturbs number statistics submodule to be connected with disturbing determination module 601, and second disturbs number statistics submodule to be used for adding up in Preset Time section, the number of the interference that each included Physical Resource Block of work at present frequency band exists.

Third value comparer module and second disturbs number statistics submodule to be connected with broad-band interference judge module 603, third value comparer module is for extracting the maximum of number of the interference of existence, if the business of maximum and Preset Time section is greater than the 5th pre-set threshold value, disturb as all the period of time interference, if the business of described maximum and described Preset Time section is less than or equal to the 5th pre-set threshold value, described interference is part-time section of interference.

Because described device embodiment is substantially corresponding to the embodiment of the method shown in earlier figures 1, Fig. 2 and Fig. 3, therefore not detailed part in the description of the present embodiment can, referring to the related description in previous embodiment, just not repeat at this.

The present invention can be used in numerous general or special purpose computingasystem environment or configuration.For example: personal computer, server computer, handheld device or portable set, plate equipment, multicomputer system, the system based on microprocessor, set top box, programmable consumer-elcetronics devices, network PC, minicom, mainframe computer, comprise distributed computing environment (DCE) of above any system or equipment etc.

The present invention can describe in the general context of the computer executable instructions of being carried out by computer, for example program module.Usually, program module comprises the routine carrying out particular task or realize particular abstract data type, program, object, assembly, data structure etc.Also can in distributed computing environment (DCE), put into practice the present invention, in these distributed computing environment (DCE), by the teleprocessing equipment being connected by communication network, be executed the task.In distributed computing environment (DCE), program module can be arranged in the local and remote computer-readable storage medium that comprises memory device.

In this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby the process, method, article or the equipment that make to comprise a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or be also included as the intrinsic key element of this process, method, article or equipment.The in the situation that of more restrictions not, the key element being limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.

Above to a kind of LTE system rejection to disturbance method provided by the present invention, and, a kind of LTE system rejection to disturbance device is described in detail, applied specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.

Claims

1. a LTE system rejection to disturbance method, is characterized in that, comprising:

2. method according to claim 1, is characterized in that, before arrival bearing's the step that detects the interference signal of disturbing described work at present frequency band, described method also comprises:

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

4. method according to claim 1 and 2, is characterized in that, before arrival bearing's the step that detects the interference signal of disturbing described work at present frequency band, described method also comprises:

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

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

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

8. method according to claim 1, is characterized in that, the arrival bearing's of the interference signal of described detection interference work at present frequency band step comprises:

9. method according to claim 1, is characterized in that, described communication terminal determines that work at present frequency band exists interference, comprising:

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

11. 1 kinds of LTE system rejection to disturbance devices, is characterized in that, comprising:

12. devices according to claim 11, is characterized in that, described device also comprises:

Described broad-band interference judge module further comprises:

13. devices according to claim 12, is characterized in that, described device also comprises frequency domain dispatching module and bandwidth Zoom module;

14. devices according to claim 13, is characterized in that, if described broad-band interference judge module also for determining that described interference arrowband disturbs, and occurs in fixed frequency range, carries out described frequency domain dispatching module or bandwidth Zoom module.

15. devices according to claim 13, is characterized in that, also comprise:

Described all the period of time disturbs judge module further to comprise:

16. devices according to claim 15, is characterized in that, described device also comprises time domain scheduler module;

17. devices according to claim 16, is characterized in that, described all the period of time is disturbed judge module, also for being disturb all the period of time or when part-time section is disturbed, carry out broad-band interference judge module in described interference;

18. devices according to claim 11, is characterized in that, described arrival bearing's detection module comprises:

19. devices according to claim 11, is characterized in that, also comprise interference determination module, for described communication terminal, determine that work at present frequency band exists interference;

Described interference determination module comprises:

20. devices according to claim 11, is characterized in that, also comprise: