CN103945419B - Interference bypassing method and equipment in a kind of cognitive radio system - Google Patents

Interference bypassing method and equipment in a kind of cognitive radio system Download PDF

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CN103945419B
CN103945419B CN201310018687.7A CN201310018687A CN103945419B CN 103945419 B CN103945419 B CN 103945419B CN 201310018687 A CN201310018687 A CN 201310018687A CN 103945419 B CN103945419 B CN 103945419B
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carrier wave
hand edge
edge carrier
interference
left hand
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CN103945419A (en
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蒋成钢
李媛媛
白文岭
杨宇
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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Abstract

The invention discloses the interference bypassing method in a kind of cognitive radio system and equipment, this method to include：Determine authoring system to the left hand edge carrier wave of multicarrier cognitive radio system and/or the disturbed condition of right hand edge carrier wave using radio environment information；Mode of operation is evaded in the interference for selecting left hand edge carrier wave and/or right hand edge carrier wave according to the disturbed condition；According to the interference of the left hand edge carrier wave and/or right hand edge carrier wave evade mode of operation perform interference described in the multicarrier cognitive radio system evade mode of operation corresponding to scheduling strategy.In the embodiment of the present invention, by the way that disturbed condition of the authoring system to multicarrier cognitive radio system edge carrier is obtained ahead of time, evade to carry out the interference of edge carrier, so as to evade interference of the undesired radiation to multicarrier cognitive radio system edge carrier outside authoring system band, and adjacent frequency is effectively reduced with influence of the authoring system out-of-band radiation to the edge carrier of multicarrier cognitive radio system.

Description

Interference bypassing method and equipment in a kind of cognitive radio system
Technical field
The present invention relates to communication technical field, more particularly, to the interference bypassing method in a kind of cognitive radio system And equipment.
Background technology
With the fast development of mobile communication cause, growing broadband wireless communications demand and limited frequency spectrum resource Between contradiction become clear day by day, operator face sternness frequency spectrum resource shortage problem；In addition, the frequency of some wireless communication systems Compose use in the time and geographically almost free time, such as radio and television frequency range, with radio data system from analogue transmission to The development of Digital Transmission, many radio and television frequency ranges will be chronically at idle condition, waste the Radio Resource of preciousness.To solve Frequency spectrum resource shortage problem, CR（Cognitive Radio, cognitive radio）Technology is by extensive concern, cognitive radio The idle resource of frequency range workable for technology obtains current location by frequency spectrum perception, and the idle frequency range of use for being capable of opportunistic, So as to improve frequency spectrum service efficiency, alleviate the nervous situation of frequency spectrum resource.
Current spectral perceives and using omnidirectional antenna performs perception, can sensing external environment, and use artificial intelligence technology Learnt, by changing some operating parameters in real time（Such as transimission power, carrier frequency and modulation technique）, make internal state The wireless signal statistical property change received is adapted to, to reach following purpose：（1）Any time, any place is highly reliable Communication；（2）Effective utilization to frequency spectrum resource.
To reach above-mentioned purpose, as shown in figure 1, cognitive radio completes whole cognitive process by recognizing ring, it is wrapped Include following steps：（1）Frequency spectrum perception；（2）Spectrum analysis；（3）Frequency spectrum decision-making.Frequency spectrum perception is by inputting RF（Radio Frequency, radio frequency）The analysis of pumping signal, complete the detection to idle frequency spectrum；Spectrum analysis is the knot according to frequency spectrum perception Fruit and the analysis to other wireless input signals, complete the estimation of channel condition information and being expected for channel capacity；Frequency spectrum decision-making It is the result of the idle frequency spectrum resource and spectrum analysis obtained according to frequency spectrum perception, obtains the decision-making that last frequency spectrum uses, it is this Decision-making includes the decision-making of frequency, bandwidth, transmission power, modulation system etc..
In existing cognitive radio technology, idle frequency spectrum information can be obtained by frequency spectrum perception, and can pass through The method for accessing database obtains usable spectrum resource.Wherein, idle frequency spectrum resource of regional etc. is stored with database Information, cognitive radio system, can be with the available frequency spectrums in region residing for access queries by reporting the geographical location information of itself Information, and frequency, emitter transmission power, height and the positional information of authoring system that authoring system has taken can be obtained Deng.
Transmitter filter has non-ideal characteristic, and carries undesired radiation（Including out-of-band radiation and stray radiation, band It by emitter and the non-linear caused undesired radiation fallen into side channel, stray radiation is by emitter unreasonably that external radiation, which is, Think harmonic radiation caused by characteristic, parasitic radiation, undesired radiation caused by transmitting intermodulation product and frequency conversion product etc.）, meeting The radio system that adjacent frequency works around emitter is caused to be interfered.In multicarrier（Such as OFDM（Orthogonal Frequency Division Multiplexing, OFDM）Deng）In cognitive radio system, cognitive radio system System selection authoring system does not have occupied frequency to be operated, when cognitive radio system is in the work of occupied authoring system During the adjacent frequency of frequency, some cognitive radio systems nearer apart from authoring system emitter, the carrier wave at bandwidth of operation edge can It can be disturbed by authoring system undesired radiation, as shown in Fig. 2 two edges of multicarrier cognitive radio system left/right are all It may be disturbed by the outer undesired radiation of band of left/right side frequency authoring system.
In order to which the adjacent frequency not by authoring system is disturbed, as shown in figure 3, frequency isolation mode typically is used in the prior art, Ensure that cognitive radio system and authoring system can be when adjacent frequency work, the undesired radiation of authoring system is without interference with cognition Radio system；When cognitive radio system finds that the system is unsatisfactory for frequency isolation with authoring system existing near by frequency and wanted When asking, then the working frequency points of cognitive radio system itself are adjusted, ensure that cognitive radio system exists with authoring system and meet It is required that frequency isolation.
During the present invention is realized, inventor has found problems with the prior art at least be present：
If cognitive radio system is distant apart from authoring system, because cognitive radio system may not be awarded The interference of power system undesired radiation, ensureing cognitive radio system not by the non-of authoring system using frequency isolation mode When it is expected radiation interference, the frequency spectrum service efficiency of whole frequency band can be reduced.
The content of the invention
The embodiment of the present invention provides interference bypassing method and equipment in a kind of cognitive radio system, to improve whole frequency The frequency spectrum service efficiency of band.In order to achieve the above object, then：
The embodiment of the present invention provides the interference bypassing method in a kind of cognitive radio system, including：
Using radio environment information determine authoring system to the left hand edge carrier wave of multicarrier cognitive radio system and/or The disturbed condition of right hand edge carrier wave；
Mode of operation is evaded in the interference for selecting left hand edge carrier wave and/or right hand edge carrier wave according to the disturbed condition；
Mode of operation is evaded according to the interference of the left hand edge carrier wave and/or right hand edge carrier wave and performs the multicarrier cognition Scheduling strategy corresponding to mode of operation is evaded in interference described in radio system.
The embodiment of the present invention provides the interference circumvention device in a kind of cognitive radio system, including：
Determining module, for determining a left side of the authoring system to multicarrier cognitive radio system using radio environment information The disturbed condition of edge carrier and/or right hand edge carrier wave；
Selecting module, for being selected the interference of left hand edge carrier wave and/or right hand edge carrier wave to evade according to the disturbed condition Mode of operation；
Scheduler module, performed for evading mode of operation according to the interference of the left hand edge carrier wave and/or right hand edge carrier wave Scheduling strategy corresponding to mode of operation is evaded in interference described in multicarrier cognitive radio system.
Compared with prior art, the embodiment of the present invention at least has advantages below：
In the embodiment of the present invention, multicarrier cognitive radio system edge carrier is done by the way that authoring system is obtained ahead of time Situation is disturbed, is evaded to carry out the interference of edge carrier, nothing is recognized to multicarrier so as to evade undesired radiation outside authoring system band The interference of line electric system edge carrier, and adjacent frequency band authoring system out-of-band radiation is effectively reduced to multicarrier cognitive radio system Edge carrier influence.Further, due to need not ensure to recognize using frequency isolation mode in the embodiment of the present invention When radio system is not disturbed by the undesired radiation of authoring system, therefore the frequency spectrum service efficiency of whole frequency band can be improved.
Brief description of the drawings
In order to illustrate more clearly of technical scheme, the required accompanying drawing used in being described below to embodiment It is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, general for this area For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is that cognitive radio completes whole cognitive process schematic diagram by recognizing ring in the prior art；
Fig. 2 is that cognitive radio system is disturbed schematic diagram by authoring system undesired radiation in the prior art；
Fig. 3 is to avoid authoring system adjacent frequency from disturbing schematic diagram using frequency isolation mode in the prior art；
Fig. 4 is the interference bypassing method flow signal in a kind of cognitive radio system that the embodiment of the present invention one provides Figure；
Fig. 5 is the schematic diagram of the disturbed condition assessment mode proposed in the embodiment of the present invention one；
Fig. 6 is that the schematic diagram of mode of operation is evaded in the selection interference proposed in the embodiment of the present invention one；
Fig. 7 is the application scenarios schematic diagram proposed in the embodiment of the present invention two, three；
Fig. 8 is the application scenarios schematic diagram proposed in the embodiment of the present invention four；
Fig. 9 is the application scenarios schematic diagram proposed in the embodiment of the present invention five；
Figure 10 is the interference circumvention device structural representation in a kind of cognitive radio system that the embodiment of the present invention six provides Figure.
Embodiment
Below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is clearly and completely described, shown So, described embodiment is only the part of the embodiment of the present invention, rather than whole embodiments.Based in the present invention Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all Belong to the scope of protection of the invention.
Embodiment one
The embodiment of the present invention one provides a kind of cognitive radio system（That is multicarrier cognitive radio system）In interference Bypassing method, as shown in figure 4, this method comprises the following steps：
Step 401, the radio environment information of multicarrier cognitive radio system present position is obtained.
In the embodiment of the present invention, the radio environment information includes but is not limited to one below or any combination：Can be more Idle frequency resource that carrier wave cognitive radio system uses, authoring system take the measurement power of frequency, multicarrier cognition nothing Line electric system present position corresponding region be authorized to the frequency that system takes, the transmission power of authoring system, authoring system with it is more Range information of carrier wave cognitive radio system etc..
In the embodiment of the present invention, obtain the radio environment information of multicarrier cognitive radio system present position include but It is not limited to one of in the following manner or any combination：
Mode one, the radio environment letter for obtaining by frequency spectrum perception mode multicarrier cognitive radio system present position Breath；In which one, frequency spectrum perception processing is performed for each frequency, and measure the measurement work(that authoring system takes frequency Rate；Wherein, if there is K authoring system, then the measurement power that authoring system takes frequency can be respectively Pi, i= 1,...,K。
Mode two, the radio environment by inquiring about database mode acquisition multicarrier cognitive radio system present position Information；In which two, the frequency spectrum service condition of each frequency, the transmitting work(of authoring system are obtained by inquiring about database The range information of rate, authoring system and multicarrier cognitive radio system.
Step 402, left hand edge of the authoring system to multicarrier cognitive radio system is determined using radio environment information The disturbed condition of carrier wave and/or right hand edge carrier wave.
In the cognitive radio system comprising multiple carrier waves, using working frequency be less than the carrier wave of default first frequency as Left hand edge carrier wave；Or in only the cognitive radio system using OFDM modulation systems of a carrier wave is included, by work frequency Rate is less than the subcarrier of default second frequency as left hand edge carrier wave.
In the cognitive radio system comprising multiple carrier waves, using working frequency be higher than the carrier wave of default 3rd frequency as Right hand edge carrier wave；Or in only the cognitive radio system using OFDM modulation systems of a carrier wave is included, by work frequency Rate is higher than the subcarrier of default 4th frequency as right hand edge carrier wave.
In the embodiment of the present invention, disturbed condition assessment mode schematic diagram as shown in Figure 5 is true using radio environment information Authoring system is determined to the left hand edge carrier wave of multicarrier cognitive radio system and/or the disturbed condition of right hand edge carrier wave, specific bag Include but be not limited in the following manner：
Mode one, radio environment information include authoring system take frequency measurement power when, utilize equation below Determine disturbed condition corresponding to left hand edge carrier wave or right hand edge carrier wave：
Wherein, ILThe disturbed condition factor corresponding to left hand edge carrier wave or right hand edge carrier wave is represented, and the disturbed condition factor is used In sign disturbed condition, PL,iI-th of mandate present on the expression frequency range lower than multicarrier cognitive radio system working frequency points System takes the measurement power of frequency, KLRepresent that authoring system takes the total quantity of frequency, ΔL,iRepresent to recognize nothing than multicarrier I-th of authoring system present on the low frequency range of line electric system working frequency points and the multicarrier cognitive radio system bandwidth of operation Power correction factor corresponding to the frequency interval of left hand edge or right hand edge, and the power correction factor is according to outside authoring system band Radiate masterplate, authoring system takes frequency of the frequency apart from multicarrier cognitive radio system working band left hand edge or right hand edge Etc. together deciding on.
Mode two, the transmission power in radio environment information including authoring system, authoring system and multicarrier cognition nothing During the range information of line electric system, disturbed condition corresponding to left hand edge carrier wave or right hand edge carrier wave is determined using equation below：
Wherein, ILThe disturbed condition factor corresponding to left hand edge carrier wave or right hand edge carrier wave is represented, and the disturbed condition factor is used In characterize disturbed condition,Represent present on the frequency range lower than multicarrier cognitive radio system working frequency points to award for i-th The transmission power of power system, ΔL,iI-th present on the expression frequency range lower than multicarrier cognitive radio system working frequency points Authoring system and the power corresponding to the frequency interval of the multicarrier cognitive radio system bandwidth of operation left hand edge or right hand edge Correction factor, and the power correction factor takes frequency apart from multicarrier according to authoring system out-of-band radiation masterplate, authoring system Frequency of cognitive radio system working band left hand edge or right hand edge etc. together decides on, LL,iRepresent than multicarrier cognition wireless In the low frequency range of electric system working frequency points i-th of authoring system path loss corresponding with the distance of multicarrier cognitive radio system because Son.
Step 403, according to disturbed condition（Disturbed condition is characterized by the disturbed condition factor）Select left hand edge carrier wave and/or Mode of operation is evaded in the interference of right hand edge carrier wave.
In the embodiment of the present invention, work is evaded in the interference for selecting left hand edge carrier wave and/or right hand edge carrier wave according to disturbed condition Operation mode, it is specifically including but not limited to following manner：
Mode one, by the disturbed condition factor characterize disturbed condition when, according to disturbed condition select left hand edge carrier wave and/ Or mode of operation is evaded in the interference of right hand edge carrier wave, is comprised the following steps：
Step 1, the interference for deciding whether to open left hand edge carrier wave and/or right hand edge carrier wave according to the disturbed condition factor are advised Keep away；If the interference for opening left hand edge carrier wave and/or right hand edge carrier wave is evaded, step 2 is performed；If it is not turned on left hand edge load The interference of ripple and/or right hand edge carrier wave is evaded, then is worked by existing way.
In the embodiment of the present invention, decided whether to open left hand edge carrier wave and/or right hand edge carrier wave according to the disturbed condition factor Interference evade including：When the disturbed condition factor corresponding to left hand edge carrier wave is more than default first thresholding, then left hand edge is opened The interference of carrier wave is evaded；Otherwise the interference for being not turned on left hand edge carrier wave is evaded；And/or when disturbing feelings corresponding to right hand edge carrier wave When the condition factor is more than default second thresholding, then the interference for opening right hand edge carrier wave is evaded；Otherwise, it is not turned on the dry of right hand edge carrier wave Disturb and evade.
The interference level of step 2, the left hand edge carrier wave for measuring multicarrier cognitive radio system and/or right hand edge carrier wave； Wherein, measure multicarrier cognitive radio system left hand edge carrier wave and/or right hand edge carrier wave interference level specifically include but It is not limited to：By the left hand edge carrier wave in multicarrier cognitive radio system and/or right hand edge carrier wave in subframe it is silent, and at this The interference level on left hand edge carrier wave and/or right hand edge carrier wave is measured in subframe（I.e. on left hand edge carrier wave and/or right hand edge carrier wave Signal power）.
Step 3, the interference level according to measurement（Signal power i.e. on left hand edge carrier wave and/or right hand edge carrier wave）Selection Mode of operation is evaded in the interference of left hand edge carrier wave and/or right hand edge carrier wave.
In the embodiment of the present invention, as shown in fig. 6, the interference level according to measurement（Interference level measured value, it is signal work( Rate）Mode of operation is evaded in the interference of selection left hand edge carrier wave and/or right hand edge carrier wave to be included：
When the interference level measured value on left hand edge carrier wave is less than default three thresholding, the interference of left hand edge carrier wave is selected It is normal mode of operation to evade mode of operation；The 3rd thresholding is preset when the interference level measured value on left hand edge carrier wave is not less than, And during less than default four thresholding, the interference of left hand edge carrier wave is selected to evade mode of operation for limited operation pattern；Work as left hand edge When interference level measured value on carrier wave is not less than default four thresholding, select left hand edge carrier wave interference evade mode of operation for Close pattern；And/or
When the interference level measured value on right hand edge carrier wave is less than default five thresholding, the interference of right hand edge carrier wave is selected It is normal mode of operation to evade mode of operation；The 5th thresholding is preset when the interference level measured value on right hand edge carrier wave is not less than, And during less than default six thresholding, the interference of right hand edge carrier wave is selected to evade mode of operation for limited operation pattern；Work as right hand edge When interference level measured value on carrier wave is not less than default six thresholding, select right hand edge carrier wave interference evade mode of operation for Close pattern.
Mode two, by the disturbed condition factor characterize disturbed condition when, according to disturbed condition select left hand edge carrier wave and/ Or mode of operation is evaded in the interference of right hand edge carrier wave, is specifically included：
When the disturbed condition factor corresponding to left hand edge carrier wave is less than default seven thresholding, the interference of left hand edge carrier wave is selected It is normal mode of operation to evade mode of operation；The 7th thresholding is preset when the disturbed condition factor corresponding to left hand edge carrier wave is not less than, And during less than default eight thresholding, the interference of left hand edge carrier wave is selected to evade mode of operation for limited operation pattern；Work as left hand edge When the disturbed condition factor corresponding to carrier wave is not less than default eight thresholding, select left hand edge carrier wave interference evade mode of operation for Close pattern；And/or
When the disturbed condition factor corresponding to right hand edge carrier wave is less than default nine thresholding, the interference of right hand edge carrier wave is selected It is normal mode of operation to evade mode of operation；The 9th thresholding is preset when the disturbed condition factor corresponding to right hand edge carrier wave is not less than, And during less than default ten thresholding, the interference of right hand edge carrier wave is selected to evade mode of operation for limited operation pattern；Work as right hand edge When the disturbed condition factor corresponding to carrier wave is not less than default ten thresholding, select right hand edge carrier wave interference evade mode of operation for Close pattern.
Step 404, mode of operation is evaded according to the interference of left hand edge carrier wave and/or right hand edge carrier wave and performs multicarrier cognition Scheduling strategy corresponding to mode of operation is evaded in the interference in radio system.
In the embodiment of the present invention, it is more that mode of operation execution is evaded according to the interference of left hand edge carrier wave and/or right hand edge carrier wave Scheduling strategy corresponding to mode of operation is evaded in interference in carrier wave cognitive radio system, specifically includes：
Situation one, when it is normal mode of operation that mode of operation is evaded in the interference of left hand edge carrier wave and/or right hand edge carrier wave, User is dispatched on left hand edge carrier wave and/or right hand edge carrier wave, i.e., according to existing embodiment left hand edge carrier wave and/or the right On edge carrier wave.
Situation two, when it is close pattern that mode of operation is evaded in the interference of left hand edge carrier wave and/or right hand edge carrier wave, on a left side User is not dispatched on edge carrier and/or right hand edge carrier wave.
Situation three, when it is limited operation pattern that mode of operation is evaded in the interference of left hand edge carrier wave and/or right hand edge carrier wave, Including but not limited to perform one of in the following manner or any combination：
First, the carrier wave of non-edge is preferentially distributed in scheduling；Specifically, mode of operation is evaded in the interference in left hand edge carrier wave For limited operation pattern when, be preferably the resource that user is distributed on non-left hand edge carrier wave during scheduling；And/or edge carrier wave on the right Interference when to evade mode of operation be limited operation pattern, be preferably the resource that user is distributed on non-right hand edge carrier wave during scheduling.
2nd, the QoS in scheduling（Quality of Service, service quality）The high user of grade is not dispatched to non-edge Carrier wave on；Specifically, when to evade mode of operation be limited operation pattern for the interference of left hand edge carrier wave, service quality during scheduling The high user of QoS grades is not dispatched to the resource on left hand edge carrier wave；And/or Working mould is evaded in the interference of edge carrier wave on the right When formula is limited operation pattern, the high user of service quality QoS grade is not dispatched to the resource on right hand edge carrier wave during scheduling.
3rd, scheduling when left hand edge carrier wave and/or right hand edge carrier wave on only scheduling center of housing estate user or channel matter Measured user；Specifically, when to evade mode of operation be limited operation pattern for the interference of left hand edge carrier wave, left hand edge during scheduling The user of center of housing estate or the user that channel quality is good are only dispatched on carrier wave；And/or work is evaded in the interference of edge carrier wave on the right When operation mode is limited operation pattern, only the user of scheduling center of housing estate or channel quality are good on right hand edge carrier wave during scheduling User.
4th, when to evade mode of operation be limited operation pattern for the interference of left hand edge carrier wave, it is dispatched on left hand edge carrier wave User's initial transmission when, using than relatively low MCS（Modulation and Coding Scheme, modulation coding mode）Deng Level, such as：Using low-order-modulated technology and than relatively low encoder bit rate（Such as 1/4 code check）；And/or the interference of edge carrier wave on the right When to evade mode of operation be limited operation pattern, during the user's initial transmission being dispatched on right hand edge carrier wave, using than relatively low MCS grades, such as：Using low-order-modulated technology and than relatively low encoder bit rate（Such as 1/4 code check）.
In summary, in the embodiment of the present invention, by the way that authoring system is obtained ahead of time to multicarrier cognitive radio system side The disturbed condition of edge carrier wave, evade to carry out the interference of edge carrier, so as to evade outside authoring system band undesired radiation to more The interference of carrier wave cognitive radio system edge carrier, and effectively reduce adjacent frequency band authoring system out-of-band radiation and multicarrier is recognized The influence of the edge carrier of radio system.Further, due to frequency isolation mode need not be used in the embodiment of the present invention During ensureing that cognitive radio system is not disturbed by the undesired radiation of authoring system, therefore the frequency spectrum of whole frequency band can be improved Service efficiency.
The embodiment of the present invention is further detailed below in conjunction with specific application scenarios.
Embodiment two
Assuming that possesses the TD-LTE system of CR functions（Follow-up abbreviation TD-LTE-CR systems）Pass through cognition wireless electrically work Make in TV frequency ranges, application scenarios schematic diagram as shown in Figure 7, the TD-LTE-CR systems include a carrier wave, and are adjusted using OFDM Mode processed, i.e. the TD-LTE-CR systems include N number of OFDM subcarriers（Use the subcarrier of OFDM modes）, i.e. L PRB （Physical Resource Block, Physical Resource Block, according to definition of the TD-LTE agreements to PRB, L=N/12）.
Some cell of TD-LTE-CR systems after start-up, configures the relevant parameter that the area interference is evaded, correlation ginseng Number includes power correction factor Δ corresponding to different frequency intervali, PRB number M of left hand edge carrier wave and right hand edge carrier wave, interference Evade technology and perform cycle T, decision threshold when mode of operation starts, sentencing when mode of operation selection is evaded in interference are evaded in interference Certainly thresholding etc..
The base station equipment of TD-LTE-CR systems obtains available idle TV frequencies by frequency spectrum perception, then TD-LTE-CR The cell operation of system is in the idle TV frequencies；Or the base station equipment of TD-LTE-CR systems is by accessing database, and base The available idle TV of the base station equipment is obtained from database in information such as the geographical position of base station equipment, transmission power, height Frequency, then the cell operation of TD-LTE-CR systems is in the idle TV frequencies.
The base station equipment of TD-LTE-CR systems according to interference evade technology perform cycle T perform in above-described embodiment one do Disturb and evade process, within each execution cycle：
For above-mentioned steps 401, obtain radio environment in some time that interference is evaded in technology execution cycle T and believe Breath, specific method can use one of the following two kinds method：（1）If TD-LTE-CR systems possess frequency spectrum perception ability, to every Individual TV frequencies perform frequency spectrum perception, according to frequency spectrum perception result, find the frequency taken by TV systems, it is occupied then to measure these With the power of the reception signal of frequency, and the power for recording the reception signal of each occupied frequency is Pi, i=1 ..., K, its Middle K is occupied frequency number, and K value determines according to frequency spectrum perception result；（2）If TD-LTE-CR systems possess access database Ability, then the information such as geographical position, the transmission power of the base station equipment of TD-LTE-CR systems are reported to database, and pass through Inquiry database obtains the frequency that region residing for the base station equipment is taken by TV systems, and the transmission power of each TV systems, The information such as the positions of TV launching towers, height.
For above-mentioned steps 402, after radio environment information is obtained, TD-LTE-CR system cells work frequency is assessed The situation that the left hand edge carrier wave of band and/or M PRB of right hand edge carrier wave are disturbed by TV, specific method can be used in step 402 Mode one or mode two calculate the corresponding disturbed condition factor.
For above-mentioned steps 403, judged whether to open left hand edge carrier wave and/or right hand edge first according to the disturbed condition factor M PRB of carrier wave interference is evaded；Wherein, when the disturbed condition factor corresponding to left hand edge carrier wave is more than default first thresholding, The interference for then opening M PRB of left hand edge carrier wave is evaded；Otherwise, the interference for being not turned on left hand edge carrier wave is evaded, according to existing way Work；And/or when the disturbed condition factor corresponding to right hand edge carrier wave is more than default second thresholding, then open right hand edge carrier wave M Individual PRB interference is evaded；Otherwise, the interference for being not turned on right hand edge carrier wave is evaded, and is worked according to existing way.
Afterwards, it is individual in some subframe silence left hand edge carrier wave M when the interference for opening M PRB of left hand edge carrier wave is evaded PRB, and the interfering signal power in the subframe on measurement left hand edge carrier wave PRB, the interfering signal power measured value is as left Edge carrier PRB interference measurement results；And/or when the interference for opening M PRB of right hand edge carrier wave is evaded, it is quiet in some subframe Silent right hand edge M PRB of carrier wave, and the interfering signal power in the subframe on measurement right hand edge carrier wave PRB, the interference signal work( Rate measured value is as right hand edge carrier wave PRB interference measurement results.
Afterwards, according to interference measurement results（The signal power of left hand edge carrier wave/right hand edge carrier wave）Selection left hand edge carrier wave/ Mode of operation is evaded in the interference of right hand edge carrier wave；When the interference measurement results on left hand edge carrier wave are less than default three thresholding, The interference of selection left hand edge carrier wave evades mode of operation for normal mode of operation；When the interference measurement results on left hand edge carrier wave not Less than default 3rd thresholding, and during less than default four thresholding, selecting the interference of left hand edge carrier wave, to evade mode of operation be limited Mode of operation；When the interference measurement results on left hand edge carrier wave are not less than default four thresholding, the dry of left hand edge carrier wave is selected Disturb that to evade mode of operation be close pattern；And/or when the interference measurement results on right hand edge carrier wave are less than default 5th thresholding When, select the interference of right hand edge carrier wave to evade mode of operation for normal mode of operation；When the interferometry knot on right hand edge carrier wave Fruit is not less than default 5th thresholding, and during less than default six thresholding, select right hand edge carrier wave interference evade mode of operation for Limited operation pattern；When the interference measurement results on right hand edge carrier wave are not less than default six thresholding, right hand edge carrier wave is selected Interference to evade mode of operation be close pattern.
For above-mentioned steps 404, it is more that mode of operation execution is evaded according to the interference of left hand edge carrier wave and/or right hand edge carrier wave Scheduling strategy corresponding to mode of operation is evaded in the interference in carrier wave cognitive radio system.
Specifically, the base station equipment of the TD-LTE-CR systems can use following a kind of or use several scheduling simultaneously Strategy：
（1）In scheduling, M PRB of non-edge is preferentially distributed when being user resource allocation, i.e.,：In left hand edge carrier wave Interference is when to evade mode of operation be limited operation pattern, and M PRB of non-left hand edge carrier wave is preferentially assigned the user to during scheduling On, when PRB resources are inadequate, just assign the user on M PRB of left hand edge carrier wave；And/or edge carrier wave on the right Interference is when to evade mode of operation be limited operation pattern, and M PRB of non-right hand edge carrier wave is preferentially assigned the user to during scheduling On, when PRB resources are inadequate, just assign the user on M PRB of right hand edge carrier wave.
（2）In scheduling, the high user of QoS grades is not dispatched to M PRB of non-edge, i.e.,：In the dry of left hand edge carrier wave When disturbing that to evade mode of operation be limited operation pattern, the high user of QoS grades is not dispatched to M PRB of left hand edge carrier wave during scheduling On；And/or mode of operation is evaded in the interference of edge carrier wave when being limited operation pattern on the right, the high user of QoS grades does not dispatch Onto M PRB of right hand edge carrier wave.
It should be noted that above-mentioned scheduling strategy can be with（1）Scheduling strategy be used in combination, be limited using left hand edge carrier wave Exemplified by mode of operation, when it is limited operation pattern that mode of operation is evaded in the interference of left hand edge carrier wave, preferentially by user during scheduling M PRB of non-left hand edge carrier wave is assigned to, when PRB resources are inadequate, using M PRB of left hand edge carrier wave, but by qos requirement Low user is assigned on M PRB of left hand edge carrier wave, and the high user of qos requirement is not assigned to M of left hand edge carrier wave On PRB.
（3）During scheduling on left hand edge carrier wave and/or right hand edge carrier wave the only base station equipment of scheduling TD-LTE-CR systems it is each The user of center of housing estate or the good user of channel quality, i.e.,：It is limited work to evade mode of operation in the interference of left hand edge carrier wave During operation mode, each cell of base station equipment estimates each user position in the cell or channel matter according to quality of uplink signal Amount, during scheduling, the user of M each center of housing estate of PRB Shang scheduling base station equipment of left hand edge carrier wave or the good use of channel quality Family；And/or mode of operation is evaded in the interference of edge carrier wave when being limited operation pattern on the right, each cell of base station equipment according to Quality of uplink signal estimates each user position in the cell or channel quality, during scheduling, on M PRB of right hand edge carrier wave The user of each center of housing estate of scheduling base station equipment or the good user of channel quality.
It should be noted that above-mentioned scheduling strategy can be with（1）Scheduling strategy be used in combination, be limited using left hand edge carrier wave Exemplified by mode of operation, when it is limited operation pattern that mode of operation is evaded in the interference of left hand edge carrier wave, preferentially by user during scheduling It is assigned on M PRB of non-left hand edge carrier wave, when PRB resources are inadequate, using M PRB of left hand edge carrier wave, but left hand edge The user or the user that channel quality is good that each center of housing estate of the base station equipment is only dispatched on M PRB of carrier wave.
（4）The user on M PRB of left/right edge carrier is dispatched in initial transmission, using than relatively low MCS grades, Such as：Using low-order-modulated technology（Such as：BPSK, QPSK）With than relatively low encoder bit rate（Such as：1/4 code check）Etc. mode.
Embodiment three
Assuming that possesses the TD-LTE system of CR functions（Follow-up abbreviation TD-LTE-CR systems）Pass through cognition wireless electrically work Make in TV frequency ranges, application scenarios schematic diagram as shown in Figure 7, the TD-LTE-CR systems include a carrier wave, and are adjusted using OFDM Mode processed, i.e. the TD-LTE-CR systems include N number of OFDM subcarriers（Use the subcarrier of OFDM modes）, i.e. L PRB （Physical Resource Block, Physical Resource Block, according to definition of the TD-LTE agreements to PRB, L=N/12）.
Some cell of TD-LTE-CR systems after start-up, configures the relevant parameter that the area interference is evaded, correlation ginseng Number includes power correction factor Δ corresponding to different frequency intervali, PRB number M of left hand edge carrier wave and right hand edge carrier wave, interference Evade technology and perform cycle T, decision threshold when mode of operation starts, sentencing when mode of operation selection is evaded in interference are evaded in interference Certainly thresholding etc..
The base station equipment of TD-LTE-CR systems obtains available idle TV frequencies by frequency spectrum perception, then TD-LTE-CR The cell operation of system is in the idle TV frequencies；Or the base station equipment of TD-LTE-CR systems is by accessing database, and base The available idle TV of the base station equipment is obtained from database in information such as the geographical position of base station equipment, transmission power, height Frequency, then the cell operation of TD-LTE-CR systems is in the idle TV frequencies.
The base station equipment of TD-LTE-CR systems according to interference evade technology perform cycle T perform in above-described embodiment one do Disturb and evade process, within each execution cycle：
For above-mentioned steps 401, obtain radio environment in some time that interference is evaded in technology execution cycle T and believe Breath, specific method can use one of the following two kinds method：（1）If TD-LTE-CR systems possess frequency spectrum perception ability, to every Individual TV frequencies perform frequency spectrum perception, according to frequency spectrum perception result, find the frequency taken by TV systems, it is occupied then to measure these With the power of the reception signal of frequency, and the power for recording the reception signal of each occupied frequency is Pi, i=1 ..., K, its Middle K is occupied frequency number, and K value determines according to frequency spectrum perception result；（2）If TD-LTE-CR systems possess access database Ability, then the information such as geographical position, the transmission power of the base station equipment of TD-LTE-CR systems are reported to database, and pass through Inquiry database obtains the frequency that region residing for the base station equipment is taken by TV systems, and the transmission power of each TV systems, The information such as the positions of TV launching towers, height.
For above-mentioned steps 402, after radio environment information is obtained, TD-LTE-CR system cells work frequency is assessed The situation that the left hand edge carrier wave of band and/or M PRB of right hand edge carrier wave are disturbed by TV, specific method can be used in step 402 Mode one or mode two calculate the corresponding disturbed condition factor.
For above-mentioned steps 403, advised according to the interference of disturbed condition selecting predictors left hand edge carrier wave and/or right hand edge carrier wave Keep away mode of operation；Wherein, when the disturbed condition factor corresponding to left hand edge carrier wave is less than default seven thresholding, left hand edge is selected to carry It is normal mode of operation that mode of operation is evaded in the interference of ripple；When the disturbed condition factor corresponding to left hand edge carrier wave is not less than default the Seven thresholdings, and during less than default eight thresholding, select the interference of left hand edge carrier wave to evade mode of operation for limited operation pattern；When When the disturbed condition factor corresponding to left hand edge carrier wave is not less than default eight thresholding, the interference of left hand edge carrier wave is selected to evade work Pattern is close pattern；And/or when the disturbed condition factor corresponding to right hand edge carrier wave is less than default nine thresholding, selection is right It is normal mode of operation that mode of operation is evaded in the interference of edge carrier；When the disturbed condition factor is not less than corresponding to right hand edge carrier wave When presetting the 9th thresholding, and being less than default ten thresholding, the interference of right hand edge carrier wave is selected to evade mode of operation for limited operation Pattern；When the disturbed condition factor corresponding to right hand edge carrier wave is not less than default ten thresholding, the interference of right hand edge carrier wave is selected It is close pattern to evade mode of operation.
For above-mentioned steps 404, it is more that mode of operation execution is evaded according to the interference of left hand edge carrier wave and/or right hand edge carrier wave Scheduling strategy corresponding to mode of operation is evaded in the interference in carrier wave cognitive radio system.
Specifically, the base station equipment of the TD-LTE-CR systems can use following a kind of or use several scheduling simultaneously Strategy：
（1）In scheduling, M PRB of non-edge is preferentially distributed when being user resource allocation, i.e.,：In left hand edge carrier wave Interference is when to evade mode of operation be limited operation pattern, and M PRB of non-left hand edge carrier wave is preferentially assigned the user to during scheduling On, when PRB resources are inadequate, just assign the user on M PRB of left hand edge carrier wave；And/or edge carrier wave on the right Interference is when to evade mode of operation be limited operation pattern, and M PRB of non-right hand edge carrier wave is preferentially assigned the user to during scheduling On, when PRB resources are inadequate, just assign the user on M PRB of right hand edge carrier wave.
（2）In scheduling, the high user of QoS grades is not dispatched to M PRB of non-edge, i.e.,：In the dry of left hand edge carrier wave When disturbing that to evade mode of operation be limited operation pattern, the high user of QoS grades is not dispatched to M PRB of left hand edge carrier wave during scheduling On；And/or mode of operation is evaded in the interference of edge carrier wave when being limited operation pattern on the right, the high user of QoS grades does not dispatch Onto M PRB of right hand edge carrier wave.
It should be noted that above-mentioned scheduling strategy can be with（1）Scheduling strategy be used in combination, be limited using left hand edge carrier wave Exemplified by mode of operation, when it is limited operation pattern that mode of operation is evaded in the interference of left hand edge carrier wave, preferentially by user during scheduling M PRB of non-left hand edge carrier wave is assigned to, when PRB resources are inadequate, using M PRB of left hand edge carrier wave, but by qos requirement Low user is assigned on M PRB of left hand edge carrier wave, and the high user of qos requirement is not assigned to M of left hand edge carrier wave On PRB.
（3）During scheduling on left hand edge carrier wave and/or right hand edge carrier wave the only base station equipment of scheduling TD-LTE-CR systems it is each The user of center of housing estate or the good user of channel quality, i.e.,：It is limited work to evade mode of operation in the interference of left hand edge carrier wave During operation mode, each cell of base station equipment estimates each user position in the cell or channel matter according to quality of uplink signal Amount, during scheduling, the user of M each center of housing estate of PRB Shang scheduling base station equipment of left hand edge carrier wave or the good use of channel quality Family；And/or mode of operation is evaded in the interference of edge carrier wave when being limited operation pattern on the right, each cell of base station equipment according to Quality of uplink signal estimates each user position in the cell or channel quality, during scheduling, on M PRB of right hand edge carrier wave The user of each center of housing estate of scheduling base station equipment or the good user of channel quality.
It should be noted that above-mentioned scheduling strategy can be with（1）Scheduling strategy be used in combination, be limited using left hand edge carrier wave Exemplified by mode of operation, when it is limited operation pattern that mode of operation is evaded in the interference of left hand edge carrier wave, preferentially by user during scheduling It is assigned on M PRB of non-left hand edge carrier wave, when PRB resources are inadequate, using M PRB of left hand edge carrier wave, but left hand edge The user or the user that channel quality is good that each center of housing estate of the base station equipment is only dispatched on M PRB of carrier wave.
（4）The user on M PRB of left/right edge carrier is dispatched in initial transmission, using than relatively low MCS grades, Such as：Using low-order-modulated technology（Such as：BPSK, QPSK）With than relatively low encoder bit rate（Such as：1/4 code check）Etc. mode.
Example IV
Assuming that possesses the TD-LTE system of CR functions（Follow-up abbreviation TD-LTE-CR systems）Pass through cognition wireless electrically work Make in TV frequency ranges, application scenarios schematic diagram as shown in Figure 8, the cell of the TD-LTE-CR systems has N number of continuous carrier wave. Some cell of TD-LTE-CR systems after start-up, configures the relevant parameter that the area interference is evaded, and relevant parameter is included not Power correction factor Δ corresponding to same frequency intervali, technology execution is evaded in left hand edge carrier wave and right hand edge variable number M, interference Decision threshold when mode of operation starts is evaded in cycle T, interference, and decision threshold when mode of operation selects etc. is evaded in interference. Under application scenarios shown in Fig. 8, the cell of TD-LTE-CR systems has 5 continuous carriers, and initial parameter thinks carrier wave -1 when configuring With carrier wave -5 respectively left hand edge carrier wave and right hand edge carrier wave, and M=1.
, can be using the handling process of above-mentioned steps 401- steps 404, based on than the work of carrier wave -1 based on above-mentioned application scenarios The received signal power measurement value of the low frequency location of working frequency, finally it can perform corresponding scheduling strategy for carrier wave -1；With/ Or, the received signal power measurement value based on the frequency location lower than the working frequency of carrier wave -5, finally it can be held for carrier wave -5 The corresponding scheduling strategy of row.
Embodiment five
Assuming that possesses the TD-LTE system of CR functions（Follow-up abbreviation TD-LTE-CR systems）Pass through cognition wireless electrically work Make in TV frequency ranges, application scenarios schematic diagram as shown in Figure 9, the cell of the TD-LTE-CR systems has N number of discrete load Ripple.Some cell of TD-LTE-CR systems after start-up, configures the relevant parameter that the area interference is evaded, relevant parameter bag Include power correction factor Δ corresponding to different frequency intervali, technology is evaded in left hand edge carrier wave and right hand edge variable number M, interference Cycle T is performed, decision threshold when mode of operation starts is evaded in interference, and decision threshold during mode of operation selection is evaded in interference Deng.
Under the application scenarios shown in Fig. 9, the cell of TD-LTE-CR systems has 5 discontinuous carriers, initial parameter configuration When think carrier wave -1, carrier wave -3, carrier wave 4, carrier wave -5 is edge carrier, can if 5 carrier waves are the carrier wave of different bandwidth, during configuration To configure the number of edge carrier according to each carrier bandwidths size, such as：Carrier wave -1, the bandwidth of carrier wave -2 is narrow, then configures Carrier wave -1 and carrier wave -2 are all edge carrier, determine that work is evaded in the interference of carrier wave -1 and carrier wave -2 simultaneously according to the interference assessment factor Operation mode.
Based on above-mentioned application scenarios, the handling process of above-mentioned steps 401- steps 404 can be used, it is dry based on carrier wave -1 The situation factor is disturbed, finally can perform corresponding scheduling strategy for carrier wave -1；The disturbed condition factor based on carrier wave -3, can be most Eventually corresponding scheduling strategy is performed for carrier wave -3；The disturbed condition factor based on carrier wave -4, finally it can be performed for carrier wave -4 Corresponding scheduling strategy；The disturbed condition factor based on carrier wave -5, finally it can perform corresponding scheduling strategy for carrier wave -5.
Embodiment six
Based on the inventive concept same with the above method, a kind of cognitive radio system is additionally provided in the embodiment of the present invention In interference circumvention device, as shown in Figure 10, the equipment includes：
Determining module 11, for determining authoring system to multicarrier cognitive radio system using radio environment information The disturbed condition of left hand edge carrier wave and/or right hand edge carrier wave；
Selecting module 12, for selecting the interference of left hand edge carrier wave and/or right hand edge carrier wave to advise according to the disturbed condition Keep away mode of operation；
Scheduler module 13, held for evading mode of operation according to the interference of the left hand edge carrier wave and/or right hand edge carrier wave Scheduling strategy corresponding to mode of operation is evaded in interference described in row multicarrier cognitive radio system.
In the embodiment of the present invention, the selecting module 12 specifically includes：
Judging submodule 121, for deciding whether that opening left hand edge carrier wave and/or right hand edge carries according to the disturbed condition The interference of ripple is evaded；
Submodule 122 is measured, for evading when judged result to open the interference of left hand edge carrier wave and/or right hand edge carrier wave When, then measure the left hand edge carrier wave of the multicarrier cognitive radio system and/or the interference level of right hand edge carrier wave；
First choice submodule 123, for selecting left hand edge carrier wave and/or right hand edge carrier wave according to the interference level of measurement Interference evade mode of operation.
In the embodiment of the present invention, the equipment also includes：Acquisition module 14, for obtaining overloading by frequency spectrum perception mode The radio environment information of ripple cognitive radio system present position；And/or recognized by inquiring about database mode acquisition multicarrier Know the radio environment information of radio system present position.
In the embodiment of the present invention, the radio environment information includes one below or any combination：It can be recognized by multicarrier Know that idle frequency resource, authoring system that radio system uses take the measurement power of frequency, multicarrier cognitive radio system System present position corresponding region is authorized to frequency, transmission power, authoring system and the multicarrier of authoring system that system takes and recognized Know the range information of radio system.
The determining module 11, is additionally operable in the cognitive radio system comprising multiple carrier waves, working frequency is less than The carrier wave of default first frequency is as left hand edge carrier wave；Or in the recognizing using OFDM modulation systems for only including a carrier wave Know in radio system, working frequency is less than the subcarrier of default second frequency as left hand edge carrier wave；
In the cognitive radio system comprising multiple carrier waves, using working frequency be higher than the carrier wave of default 3rd frequency as Right hand edge carrier wave；Or in only the cognitive radio system using OFDM modulation systems of a carrier wave is included, by work frequency Rate is higher than the subcarrier of default 4th frequency as right hand edge carrier wave.
The determining module 11, the measurement power specifically for including authoring system occupancy frequency in radio environment information When, determine disturbed condition corresponding to left hand edge carrier wave or right hand edge carrier wave using equation below：
Wherein, ILRepresent the disturbed condition factor corresponding to left hand edge carrier wave or right hand edge carrier wave, and the disturbed condition because Son is used to characterize disturbed condition, PL,iI-th present on the expression frequency range lower than multicarrier cognitive radio system working frequency points Authoring system takes the measurement power of frequency, KLRepresent that authoring system takes the total quantity of frequency, ΔL,iExpression is recognized than multicarrier Know that i-th of authoring system present on the low frequency range of radio system working frequency points works with the multicarrier cognitive radio system Power correction factor corresponding to the frequency interval of bandwidth left hand edge or right hand edge；
Or
Include transmission power, authoring system and the multicarrier cognitive radio system of authoring system in radio environment information Range information when, determine disturbed condition corresponding to left hand edge carrier wave or right hand edge carrier wave using equation below：
Wherein, ILRepresent the disturbed condition factor corresponding to left hand edge carrier wave or right hand edge carrier wave, and the disturbed condition because Son is used to characterize disturbed condition,I-th present on the expression frequency range lower than multicarrier cognitive radio system working frequency points The transmission power of individual authoring system, ΔL,iRepresent present on the frequency range lower than multicarrier cognitive radio system working frequency points the I authoring system and the work(corresponding to the frequency interval of the multicarrier cognitive radio system bandwidth of operation left hand edge or right hand edge Rate correction factor, LL,iI-th of authoring system and overloading in the expression frequency range lower than multicarrier cognitive radio system working frequency points The path loss factor corresponding to the distance of ripple cognitive radio system.
In the embodiment of the present invention, the judging submodule 121, specifically for characterizing interference feelings by the disturbed condition factor During condition, when the disturbed condition factor corresponding to left hand edge carrier wave is more than default first thresholding, then the interference of left hand edge carrier wave is opened Evade；Otherwise, the interference for being not turned on left hand edge carrier wave is evaded；And/or
When the disturbed condition factor corresponding to right hand edge carrier wave is more than default second thresholding, then the dry of right hand edge carrier wave is opened Disturb and evade；Otherwise, the interference for being not turned on right hand edge carrier wave is evaded.
In the embodiment of the present invention, the measurement submodule 122, specifically for by the multicarrier cognitive radio system Left hand edge carrier wave and/or right hand edge carrier wave it is silent in subframe, and left hand edge carrier wave and/or right hand edge are measured in the subframe Interference level on carrier wave.
In the embodiment of the present invention, the first choice submodule 123, specifically for when the interference level on left hand edge carrier wave When measured value is less than default three thresholding, the interference of left hand edge carrier wave is selected to evade mode of operation for normal mode of operation；Work as a left side Interference level measured value on edge carrier is not less than default 3rd thresholding, and during less than default four thresholding, selects left hand edge It is limited operation pattern that mode of operation is evaded in the interference of carrier wave；When the interference level measured value on left hand edge carrier wave is not less than default During four thresholdings, the interference of left hand edge carrier wave is selected to evade mode of operation for close pattern；And/or
When the interference level measured value on right hand edge carrier wave is less than default five thresholding, the interference of right hand edge carrier wave is selected It is normal mode of operation to evade mode of operation；The 5th thresholding is preset when the interference level measured value on right hand edge carrier wave is not less than, And during less than default six thresholding, the interference of right hand edge carrier wave is selected to evade mode of operation for limited operation pattern；Work as right hand edge When interference level measured value on carrier wave is not less than default six thresholding, select right hand edge carrier wave interference evade mode of operation for Close pattern.
In the embodiment of the present invention, the selecting module 12 also includes：Second selection submodule 124, for passing through interference When the situation factor characterizes disturbed condition, when the disturbed condition factor corresponding to left hand edge carrier wave is less than default seven thresholding, selection It is normal mode of operation that mode of operation is evaded in the interference of left hand edge carrier wave；When the disturbed condition factor is not small corresponding to left hand edge carrier wave In default 7th thresholding, and during less than default eight thresholding, the interference of left hand edge carrier wave is selected to evade mode of operation for limited work Operation mode；When the disturbed condition factor corresponding to left hand edge carrier wave is not less than default eight thresholding, the dry of left hand edge carrier wave is selected Disturb that to evade mode of operation be close pattern；And/or
When the disturbed condition factor corresponding to right hand edge carrier wave is less than default nine thresholding, the interference of right hand edge carrier wave is selected It is normal mode of operation to evade mode of operation；The 9th thresholding is preset when the disturbed condition factor corresponding to right hand edge carrier wave is not less than, And during less than default ten thresholding, the interference of right hand edge carrier wave is selected to evade mode of operation for limited operation pattern；Work as right hand edge When the disturbed condition factor corresponding to carrier wave is not less than default ten thresholding, select right hand edge carrier wave interference evade mode of operation for Close pattern.
The scheduler module 13, specifically for evading mode of operation when the interference of left hand edge carrier wave and/or right hand edge carrier wave For normal mode of operation when, dispatch user on left hand edge carrier wave and/or right hand edge carrier wave；
When it is close pattern that mode of operation is evaded in the interference of left hand edge carrier wave and/or right hand edge carrier wave, carried in left hand edge User is not dispatched on ripple and/or right hand edge carrier wave；
When it is limited operation pattern that mode of operation is evaded in the interference of left hand edge carrier wave and/or right hand edge carrier wave, perform with One of under type or any combination：
It is preferably that user's distribution is non-when it is limited operation pattern that mode of operation is evaded in the interference of left hand edge carrier wave, during scheduling Resource on left hand edge carrier wave；And/or mode of operation is evaded in the interference of edge carrier wave when being limited operation pattern on the right, scheduling When be preferably resource that user is distributed on non-right hand edge carrier wave；
When it is limited operation pattern that mode of operation is evaded in the interference of left hand edge carrier wave, service quality QoS grade during scheduling High user is not dispatched to the resource on left hand edge carrier wave；And/or mode of operation is evaded in the interference of edge carrier wave is limited on the right During mode of operation, the high user of service quality QoS grade is not dispatched to the resource on right hand edge carrier wave during scheduling；
When it is limited operation pattern that mode of operation is evaded in the interference of left hand edge carrier wave, only adjusted on left hand edge carrier wave during scheduling The user or the user that channel quality is good for spending center of housing estate；And/or on the right the interference of edge carrier wave evade mode of operation be by When limiting mode of operation, the only user of scheduling center of housing estate or the good user of channel quality on right hand edge carrier wave during scheduling；
When it is limited operation pattern that mode of operation is evaded in the interference of left hand edge carrier wave, the use that is dispatched on left hand edge carrier wave During the initial transmission of family, using than relatively low modulation coding mode MCS grades；And/or work is evaded in the interference of edge carrier wave on the right When pattern is limited operation pattern, during the user's initial transmission being dispatched on right hand edge carrier wave, using than relatively low modulating-coding Mode MCS grades.
Wherein, the modules of apparatus of the present invention can be integrated in one, and can also be deployed separately.Above-mentioned module can close And be a module, multiple submodule can also be further split into.
Through the above description of the embodiments, those skilled in the art can be understood that the present invention can be by Software adds the mode of required general hardware platform to realize, naturally it is also possible to which by hardware, but the former is more in many cases Good embodiment.Based on such understanding, what technical scheme substantially contributed to prior art in other words Part can be embodied in the form of software product, and the computer software product is stored in a storage medium, if including It is dry to instruct to cause a computer equipment（Can be personal computer, server, or network equipment etc.）Perform this hair Method described in bright each embodiment.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, module or stream in accompanying drawing Journey is not necessarily implemented necessary to the present invention.
It will be appreciated by those skilled in the art that the module in device in embodiment can describe be divided according to embodiment It is distributed in the device of embodiment, respective change can also be carried out and be disposed other than in one or more devices of the present embodiment.On The module for stating embodiment can be merged into a module, can also be further split into multiple submodule.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
Disclosed above is only several specific embodiments of the present invention, and still, the present invention is not limited to this, any ability What the technical staff in domain can think change should all fall into protection scope of the present invention.

Claims (16)

  1. A kind of 1. interference bypassing method in cognitive radio system, it is characterised in that including：
    Determine authoring system to the left hand edge carrier wave of multicarrier cognitive radio system and/or the right using radio environment information The disturbed condition of edge carrier wave；
    Mode of operation is evaded in the interference for selecting left hand edge carrier wave and/or right hand edge carrier wave according to the disturbed condition；
    Mode of operation is evaded according to the interference of the left hand edge carrier wave and/or right hand edge carrier wave and performs the multicarrier cognition wireless Scheduling strategy corresponding to mode of operation is evaded in interference described in electric system；Wherein,
    It is described to select the interference of left hand edge carrier wave and/or right hand edge carrier wave to evade mode of operation according to disturbed condition, including：
    Evaded according to the interference that the disturbed condition decides whether to open left hand edge carrier wave and/or right hand edge carrier wave；If open The interference of left hand edge carrier wave and/or right hand edge carrier wave is evaded, then the left hand edge for measuring the multicarrier cognitive radio system carries The interference level of ripple and/or right hand edge carrier wave, and left hand edge carrier wave and/or right hand edge carrier wave are selected according to the interference level of measurement Interference evade mode of operation；
    Or mode of operation is evaded in the interference according to disturbed condition selection left hand edge carrier wave and/or right hand edge carrier wave, is wrapped Include：
    When characterizing disturbed condition by the disturbed condition factor, when the disturbed condition factor corresponding to left hand edge carrier wave is less than default the During seven thresholdings, the interference of left hand edge carrier wave is selected to evade mode of operation for normal mode of operation；When dry corresponding to left hand edge carrier wave When disturbing the situation factor and be not less than default 7th thresholding, and being less than default eight thresholding, the interference of left hand edge carrier wave is selected to evade work Operation mode is limited operation pattern；When the disturbed condition factor corresponding to left hand edge carrier wave is not less than default eight thresholding, selection It is close pattern that mode of operation is evaded in the interference of left hand edge carrier wave；And/or
    When the disturbed condition factor corresponding to right hand edge carrier wave is less than default nine thresholding, the interference of right hand edge carrier wave is selected to evade Mode of operation is normal mode of operation；The 9th thresholding is preset when the disturbed condition factor corresponding to right hand edge carrier wave is not less than, and it is small When default ten thresholding, the interference of right hand edge carrier wave is selected to evade mode of operation for limited operation pattern；When right hand edge carrier wave When the corresponding disturbed condition factor is not less than default ten thresholding, the interference of right hand edge carrier wave is selected to evade mode of operation to close Pattern.
  2. 2. the method as described in claim 1, it is characterised in that
    It is described using radio environment information determine authoring system to the left hand edge carrier wave of multicarrier cognitive radio system and/or The disturbed condition of right hand edge carrier wave, also includes before：Obtained by frequency spectrum perception mode residing for multicarrier cognitive radio system The radio environment information of position；And/or obtain multicarrier cognitive radio system present position by inquiring about database mode Radio environment information；
    The radio environment information includes one below or any combination：The sky that can be used by multicarrier cognitive radio system Ideler frequency point resource, authoring system take measurement power, the multicarrier cognitive radio system present position corresponding region quilt of frequency The distance of frequency, the transmission power of authoring system, authoring system and multicarrier cognitive radio system that authoring system takes is believed Breath.
  3. 3. the method as described in claim 1, it is characterised in that
    In the cognitive radio system comprising multiple carrier waves, working frequency is less than the carrier wave of default first frequency as the left side Edge carrier wave；Or in only the cognitive radio system using OFDM modulation systems of a carrier wave is included, working frequency is low In default second frequency subcarrier as left hand edge carrier wave；
    In the cognitive radio system comprising multiple carrier waves, working frequency is higher than the carrier wave of default 3rd frequency as the right Edge carrier wave；Or in only the cognitive radio system using OFDM modulation systems of a carrier wave is included, by working frequency height In default 4th frequency subcarrier as right hand edge carrier wave.
  4. 4. the method as described in claim 1, it is characterised in that
    It is described using radio environment information determine authoring system to the left hand edge carrier wave of multicarrier cognitive radio system and/or The disturbed condition of right hand edge carrier wave, is specifically included：
    When radio environment information includes the measurement power of authoring system occupancy frequency, determine that left hand edge carries using equation below Disturbed condition corresponding to ripple or right hand edge carrier wave：
    <mrow> <msub> <mi>I</mi> <mi>L</mi> </msub> <mo>=</mo> <munderover> <mo>&amp;Sigma;</mo> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <msub> <mi>K</mi> <mi>L</mi> </msub> </munderover> <msub> <mi>P</mi> <mrow> <mi>L</mi> <mo>,</mo> <mi>i</mi> </mrow> </msub> <mo>&amp;times;</mo> <msub> <mi>&amp;Delta;</mi> <mrow> <mi>L</mi> <mo>,</mo> <mi>i</mi> </mrow> </msub> <mo>;</mo> </mrow>
    Wherein, ILThe disturbed condition factor corresponding to left hand edge carrier wave or right hand edge carrier wave is represented, and the disturbed condition factor is used for Characterize disturbed condition, PL,iI-th of mandate system present on the expression frequency range lower than multicarrier cognitive radio system working frequency points System takes the measurement power of frequency, KLRepresent that authoring system takes the total quantity of frequency, ΔL,iRepresent than multicarrier cognition wireless I-th of authoring system present on the low frequency range of electric system working frequency points and the multicarrier cognitive radio system bandwidth of operation are left Power correction factor corresponding to the frequency interval of edge or right hand edge；
    Or
    The transmission power of radio environment information including authoring system, authoring system and multicarrier cognitive radio system away from During from information, disturbed condition corresponding to left hand edge carrier wave or right hand edge carrier wave is determined using equation below：
    <mrow> <msub> <mi>I</mi> <mi>L</mi> </msub> <mo>=</mo> <munderover> <mo>&amp;Sigma;</mo> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <msub> <mi>K</mi> <mi>L</mi> </msub> </munderover> <msubsup> <mi>P</mi> <mrow> <mi>L</mi> <mo>,</mo> <mi>i</mi> </mrow> <mi>t</mi> </msubsup> <mo>&amp;times;</mo> <msub> <mi>&amp;Delta;</mi> <mrow> <mi>L</mi> <mo>,</mo> <mi>i</mi> </mrow> </msub> <mo>&amp;times;</mo> <msub> <mi>L</mi> <mrow> <mi>L</mi> <mo>,</mo> <mi>i</mi> </mrow> </msub> <mo>;</mo> </mrow>
    Wherein, ILThe disturbed condition factor corresponding to left hand edge carrier wave or right hand edge carrier wave is represented, and the disturbed condition factor is used for Characterize disturbed condition,I-th of mandate present on the expression frequency range lower than multicarrier cognitive radio system working frequency points The transmission power of system, ΔL,iRepresent present on the frequency range lower than multicarrier cognitive radio system working frequency points to award for i-th Power system and the power school corresponding to the frequency interval of the multicarrier cognitive radio system bandwidth of operation left hand edge or right hand edge Positive divisor, LL,iI-th of authoring system is recognized with multicarrier in the expression frequency range lower than multicarrier cognitive radio system working frequency points Know the path loss factor corresponding to the distance of radio system.
  5. 5. the method as described in claim 1, it is characterised in that described to be decided whether to open left hand edge carrier wave according to disturbed condition And/or the interference of right hand edge carrier wave is evaded, including：
    When characterizing disturbed condition by the disturbed condition factor, when the disturbed condition factor corresponding to left hand edge carrier wave is more than default the During one thresholding, then the interference for opening left hand edge carrier wave is evaded；Otherwise, the interference for being not turned on left hand edge carrier wave is evaded；And/or when When the disturbed condition factor corresponding to right hand edge carrier wave is more than default second thresholding, then the interference for opening right hand edge carrier wave is evaded；It is no Then, the interference for being not turned on right hand edge carrier wave is evaded.
  6. 6. the method as described in claim 1, it is characterised in that the left hand edge of the measurement multicarrier cognitive radio system carries The interference level of ripple and/or right hand edge carrier wave, including：
    By the left hand edge carrier wave in the multicarrier cognitive radio system and/or right hand edge carrier wave in subframe it is silent, and The interference level on left hand edge carrier wave and/or right hand edge carrier wave is measured in the subframe.
  7. 7. the method as described in claim 1, it is characterised in that described that left hand edge carrier wave is selected according to the interference level of measurement And/or mode of operation is evaded in the interference of right hand edge carrier wave, including：
    When the interference level measured value on left hand edge carrier wave is less than default three thresholding, the interference of left hand edge carrier wave is selected to evade Mode of operation is normal mode of operation；The 3rd thresholding is preset when the interference level measured value on left hand edge carrier wave is not less than, and it is small When default four thresholding, the interference of left hand edge carrier wave is selected to evade mode of operation for limited operation pattern；When left hand edge carrier wave On interference level measured value when being not less than default four thresholding, select the interference of left hand edge carrier wave to evade mode of operation for closing Pattern；And/or
    When the interference level measured value on right hand edge carrier wave is less than default five thresholding, the interference of right hand edge carrier wave is selected to evade Mode of operation is normal mode of operation；The 5th thresholding is preset when the interference level measured value on right hand edge carrier wave is not less than, and it is small When default six thresholding, the interference of right hand edge carrier wave is selected to evade mode of operation for limited operation pattern；When right hand edge carrier wave On interference level measured value when being not less than default six thresholding, select the interference of right hand edge carrier wave to evade mode of operation for closing Pattern.
  8. 8. the method as described in claim 1 or 7, it is characterised in that
    The interference according to left hand edge carrier wave and/or right hand edge carrier wave evades mode of operation and performs the multicarrier cognition wireless Scheduling strategy corresponding to mode of operation is evaded in interference described in electric system, including：
    When it is normal mode of operation that mode of operation is evaded in the interference of left hand edge carrier wave and/or right hand edge carrier wave, carried in left hand edge User is dispatched on ripple and/or right hand edge carrier wave；
    When it is close pattern that mode of operation is evaded in the interference of left hand edge carrier wave and/or right hand edge carrier wave, left hand edge carrier wave and/ Or do not dispatch user on right hand edge carrier wave；
    When it is limited operation pattern that mode of operation is evaded in the interference of left hand edge carrier wave and/or right hand edge carrier wave, perform with lower section One of formula or any combination：
    It is preferably that user distributes the non-left side when it is limited operation pattern that mode of operation is evaded in the interference of left hand edge carrier wave, during scheduling Resource on edge carrier wave；It is excellent during scheduling and/or mode of operation is evaded in the interference of edge carrier wave when being limited operation pattern on the right The resource first distributed for user on non-right hand edge carrier wave；
    When it is limited operation pattern that mode of operation is evaded in the interference of left hand edge carrier wave, service quality QoS grade is high during scheduling User is not dispatched to the resource on left hand edge carrier wave；And/or mode of operation is evaded in the interference of edge carrier wave is limited operation on the right During pattern, the high user of service quality QoS grade is not dispatched to the resource on right hand edge carrier wave during scheduling；
    Only dispatched on left hand edge carrier wave when it is limited operation pattern that mode of operation is evaded in the interference of left hand edge carrier wave, during scheduling small The user of district center or the good user of channel quality；And/or the interference of edge carrier wave evades mode of operation for limited work on the right During operation mode, the only user of scheduling center of housing estate or the good user of channel quality on right hand edge carrier wave during scheduling；
    When it is limited operation pattern that mode of operation is evaded in the interference of left hand edge carrier wave, at the beginning of being dispatched to the user on left hand edge carrier wave When beginning to transmit, using than relatively low modulation coding mode MCS grades；And/or mode of operation is evaded in the interference of edge carrier wave on the right For limited operation pattern when, during the user's initial transmission being dispatched on right hand edge carrier wave, using than relatively low modulation coding mode MCS grades.
  9. A kind of 9. interference circumvention device in cognitive radio system, it is characterised in that including：
    Determining module, for determining left hand edge of the authoring system to multicarrier cognitive radio system using radio environment information The disturbed condition of carrier wave and/or right hand edge carrier wave；
    Selecting module, for being selected the interference of left hand edge carrier wave and/or right hand edge carrier wave to evade work according to the disturbed condition Pattern；
    Scheduler module, overloading is performed for evading mode of operation according to the interference of the left hand edge carrier wave and/or right hand edge carrier wave Scheduling strategy corresponding to mode of operation is evaded in interference described in ripple cognitive radio system；Wherein,
    The selecting module includes：
    Judging submodule, for being decided whether to open the dry of left hand edge carrier wave and/or right hand edge carrier wave according to the disturbed condition Disturb and evade；
    Submodule is measured, for when judged result is evaded to open the interference of left hand edge carrier wave and/or right hand edge carrier wave, then surveying Measure the left hand edge carrier wave of the multicarrier cognitive radio system and/or the interference level of right hand edge carrier wave；
    First choice submodule, for selecting the interference of left hand edge carrier wave and/or right hand edge carrier wave according to the interference level of measurement Evade mode of operation；
    Or the judging submodule includes：
    Second selection submodule, for by the disturbed condition factor characterize disturbed condition when, when corresponding to left hand edge carrier wave do When disturbing the situation factor less than default seven thresholding, the interference of left hand edge carrier wave is selected to evade mode of operation for normal mode of operation； When the disturbed condition factor corresponding to left hand edge carrier wave is not less than default 7th thresholding, and is less than default eight thresholding, selection is left It is limited operation pattern that mode of operation is evaded in the interference of edge carrier；When the disturbed condition factor is not less than corresponding to left hand edge carrier wave During default eight thresholding, the interference of left hand edge carrier wave is selected to evade mode of operation for close pattern；And/or
    When the disturbed condition factor corresponding to right hand edge carrier wave is less than default nine thresholding, the interference of right hand edge carrier wave is selected to evade Mode of operation is normal mode of operation；The 9th thresholding is preset when the disturbed condition factor corresponding to right hand edge carrier wave is not less than, and it is small When default ten thresholding, the interference of right hand edge carrier wave is selected to evade mode of operation for limited operation pattern；When right hand edge carrier wave When the corresponding disturbed condition factor is not less than default ten thresholding, the interference of right hand edge carrier wave is selected to evade mode of operation to close Pattern.
  10. 10. equipment as claimed in claim 9, it is characterised in that
    The equipment also includes：Acquisition module, for being obtained by frequency spectrum perception mode residing for multicarrier cognitive radio system The radio environment information of position；And/or obtain multicarrier cognitive radio system present position by inquiring about database mode Radio environment information；
    The radio environment information includes one below or any combination：The sky that can be used by multicarrier cognitive radio system Ideler frequency point resource, authoring system take measurement power, the multicarrier cognitive radio system present position corresponding region quilt of frequency The distance of frequency, the transmission power of authoring system, authoring system and multicarrier cognitive radio system that authoring system takes is believed Breath.
  11. 11. equipment as claimed in claim 9, it is characterised in that
    The determining module, it is additionally operable in the cognitive radio system comprising multiple carrier waves, by working frequency less than default the The carrier wave of one frequency is as left hand edge carrier wave；Or in the cognition wireless using OFDM modulation systems for only including a carrier wave In electric system, working frequency is less than the subcarrier of default second frequency as left hand edge carrier wave；
    In the cognitive radio system comprising multiple carrier waves, working frequency is higher than the carrier wave of default 3rd frequency as the right Edge carrier wave；Or in only the cognitive radio system using OFDM modulation systems of a carrier wave is included, by working frequency height In default 4th frequency subcarrier as right hand edge carrier wave.
  12. 12. equipment as claimed in claim 9, it is characterised in that
    The determining module, specifically for radio environment information include authoring system take frequency measurement power when, profit The disturbed condition corresponding to equation below determines left hand edge carrier wave or right hand edge carrier wave：
    <mrow> <msub> <mi>I</mi> <mi>L</mi> </msub> <mo>=</mo> <munderover> <mo>&amp;Sigma;</mo> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <msub> <mi>K</mi> <mi>L</mi> </msub> </munderover> <msub> <mi>P</mi> <mrow> <mi>L</mi> <mo>,</mo> <mi>i</mi> </mrow> </msub> <mo>&amp;times;</mo> <msub> <mi>&amp;Delta;</mi> <mrow> <mi>L</mi> <mo>,</mo> <mi>i</mi> </mrow> </msub> <mo>;</mo> </mrow>
    Wherein, ILThe disturbed condition factor corresponding to left hand edge carrier wave or right hand edge carrier wave is represented, and the disturbed condition factor is used for Characterize disturbed condition, PL,iI-th of mandate system present on the expression frequency range lower than multicarrier cognitive radio system working frequency points System takes the measurement power of frequency, KLRepresent that authoring system takes the total quantity of frequency, ΔL,iRepresent than multicarrier cognition wireless I-th of authoring system present on the low frequency range of electric system working frequency points and the multicarrier cognitive radio system bandwidth of operation are left Power correction factor corresponding to the frequency interval of edge or right hand edge；
    Or
    The transmission power of radio environment information including authoring system, authoring system and multicarrier cognitive radio system away from During from information, disturbed condition corresponding to left hand edge carrier wave or right hand edge carrier wave is determined using equation below：
    <mrow> <msub> <mi>I</mi> <mi>L</mi> </msub> <mo>=</mo> <munderover> <mo>&amp;Sigma;</mo> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <msub> <mi>K</mi> <mi>L</mi> </msub> </munderover> <msubsup> <mi>P</mi> <mrow> <mi>L</mi> <mo>,</mo> <mi>i</mi> </mrow> <mi>t</mi> </msubsup> <mo>&amp;times;</mo> <msub> <mi>&amp;Delta;</mi> <mrow> <mi>L</mi> <mo>,</mo> <mi>i</mi> </mrow> </msub> <mo>&amp;times;</mo> <msub> <mi>L</mi> <mrow> <mi>L</mi> <mo>,</mo> <mi>i</mi> </mrow> </msub> <mo>;</mo> </mrow>
    Wherein, ILThe disturbed condition factor corresponding to left hand edge carrier wave or right hand edge carrier wave is represented, and the disturbed condition factor is used for Characterize disturbed condition,I-th of mandate present on the expression frequency range lower than multicarrier cognitive radio system working frequency points The transmission power of system, ΔL,iRepresent present on the frequency range lower than multicarrier cognitive radio system working frequency points to award for i-th Power system and the power school corresponding to the frequency interval of the multicarrier cognitive radio system bandwidth of operation left hand edge or right hand edge Positive divisor, LL,iI-th of authoring system is recognized with multicarrier in the expression frequency range lower than multicarrier cognitive radio system working frequency points Know the path loss factor corresponding to the distance of radio system.
  13. 13. equipment as claimed in claim 9, it is characterised in that
    The judging submodule, specifically for when characterizing disturbed condition by the disturbed condition factor, when left hand edge carrier wave is corresponding Disturbed condition factor when being more than default first thresholding, then the interference for opening left hand edge carrier wave is evaded；Otherwise, it is not turned on left hand edge The interference of carrier wave is evaded；And/or when the disturbed condition factor corresponding to right hand edge carrier wave is more than default second thresholding, then open The interference of right hand edge carrier wave is evaded；Otherwise, the interference for being not turned on right hand edge carrier wave is evaded.
  14. 14. equipment as claimed in claim 9, it is characterised in that
    The measurement submodule, specifically for by the left hand edge carrier wave in the multicarrier cognitive radio system and/or the right Edge carrier wave is silent in subframe, and the interference level on left hand edge carrier wave and/or right hand edge carrier wave is measured in the subframe.
  15. 15. equipment as claimed in claim 9, it is characterised in that
    The first choice submodule, specifically for being less than default 3rd thresholding when the interference level measured value on left hand edge carrier wave When, select the interference of left hand edge carrier wave to evade mode of operation for normal mode of operation；When the interference level on left hand edge carrier wave is surveyed When value is not less than presetting the 3rd thresholding, and being less than default four thresholding, the interference of left hand edge carrier wave is selected to evade mode of operation For limited operation pattern；When the interference level measured value on left hand edge carrier wave is not less than default four thresholding, left hand edge is selected It is close pattern that mode of operation is evaded in the interference of carrier wave；And/or
    When the interference level measured value on right hand edge carrier wave is less than default five thresholding, the interference of right hand edge carrier wave is selected to evade Mode of operation is normal mode of operation；The 5th thresholding is preset when the interference level measured value on right hand edge carrier wave is not less than, and it is small When default six thresholding, the interference of right hand edge carrier wave is selected to evade mode of operation for limited operation pattern；When right hand edge carrier wave On interference level measured value when being not less than default six thresholding, select the interference of right hand edge carrier wave to evade mode of operation for closing Pattern.
  16. 16. the equipment as described in claim 9 or 15, it is characterised in that
    The scheduler module, it is normal specifically for evading mode of operation when the interference of left hand edge carrier wave and/or right hand edge carrier wave During mode of operation, user is dispatched on left hand edge carrier wave and/or right hand edge carrier wave；
    When it is close pattern that mode of operation is evaded in the interference of left hand edge carrier wave and/or right hand edge carrier wave, left hand edge carrier wave and/ Or do not dispatch user on right hand edge carrier wave；
    When it is limited operation pattern that mode of operation is evaded in the interference of left hand edge carrier wave and/or right hand edge carrier wave, perform with lower section One of formula or any combination：
    It is preferably that user distributes the non-left side when it is limited operation pattern that mode of operation is evaded in the interference of left hand edge carrier wave, during scheduling Resource on edge carrier wave；It is excellent during scheduling and/or mode of operation is evaded in the interference of edge carrier wave when being limited operation pattern on the right The resource first distributed for user on non-right hand edge carrier wave；
    When it is limited operation pattern that mode of operation is evaded in the interference of left hand edge carrier wave, service quality QoS grade is high during scheduling User is not dispatched to the resource on left hand edge carrier wave；And/or mode of operation is evaded in the interference of edge carrier wave is limited operation on the right During pattern, the high user of service quality QoS grade is not dispatched to the resource on right hand edge carrier wave during scheduling；
    Only dispatched on left hand edge carrier wave when it is limited operation pattern that mode of operation is evaded in the interference of left hand edge carrier wave, during scheduling small The user of district center or the good user of channel quality；And/or the interference of edge carrier wave evades mode of operation for limited work on the right During operation mode, the only user of scheduling center of housing estate or the good user of channel quality on right hand edge carrier wave during scheduling；
    When it is limited operation pattern that mode of operation is evaded in the interference of left hand edge carrier wave, at the beginning of being dispatched to the user on left hand edge carrier wave When beginning to transmit, using than relatively low modulation coding mode MCS grades；And/or mode of operation is evaded in the interference of edge carrier wave on the right For limited operation pattern when, during the user's initial transmission being dispatched on right hand edge carrier wave, using than relatively low modulation coding mode MCS grades.
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