CN109511125A - A kind of method of identification adjacent area interference and different system interference in wireless network - Google Patents
A kind of method of identification adjacent area interference and different system interference in wireless network Download PDFInfo
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- CN109511125A CN109511125A CN201811360516.1A CN201811360516A CN109511125A CN 109511125 A CN109511125 A CN 109511125A CN 201811360516 A CN201811360516 A CN 201811360516A CN 109511125 A CN109511125 A CN 109511125A
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- H—ELECTRICITY
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- H04W72/044—Wireless resource allocation based on the type of the allocated resource
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- H—ELECTRICITY
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Abstract
The present invention provides a kind of method of identification adjacent area interference and different system interference in wireless network, comprising: current base station obtains current base station subband and is disturbed situation using the subband at map and region to be measured；Judge whether the region is otherwise the fringe region of current base station coverage area recognizes whether different system interference if so, current base station requests neighbor base station that neighbor base station subband issued current base station using map；Neighbor base station obtains neighbor base station subband and using map and sends it to current base station；Current base station is disturbed situation and its judges interference source type using the state in map using map, neighbor base station subband in current base station subband according to each subband.The present invention also provides the recognition methods when fringe region that region to be measured is not current base station coverage area.Method of the invention judges adjacent area interference and different system interference using information such as maps by be disturbed situation, each base station subband that current base station obtains, and can effectively identify interference source type.
Description
Technical field
The invention belongs to calculate communication network field, and in particular to the interference of identification adjacent area and different system in a kind of wireless network
The method of interference.
Background technique
Due to the scarcity of wireless frequency spectrum, there are various ways for the current mode for wireless system distribution frequency spectrum.Wherein one
The kind method of salary distribution is frequency spectrum resource workable for distributing to Target Wireless system, while allowing other multiple isomery wireless systems
Share the frequency spectrum resource.At this point, the potential interference source of Target Wireless system includes: adjacent area interference or different system in goal systems
Interference.For disturbance Source Type (adjacent area interference or different system interference), the interference that the base station of goal systems is taken evade or
Frequency spectrum share strategy would also vary from.
By taking electric power wireless private network as an example, National Radio management board is by the total 7MHz of 223-226MHz and 229-233MHz frequency range
Frequency range be appointed as the industries broadband wireless application specific frequency range such as electric power.However, non-to the service condition of above-mentioned frequency range at this stage
It is often complicated, there are the transmission signal of multiple isomery wireless systems in the frequency range, specifically include: the data radio station of 230MHz, military affairs
Communication, radio astronomy etc..In addition, due to more base station networkings of electric power wireless private network, terminal or base station in a cell in addition to
It is outer to face above-mentioned possible different system signal interference, will also face the homologous ray interference signal from adjacent cell around.On also,
Multiple systems are stated to the behaviours in service of different frequent points in frequency range (or carrier wave) dynamic change at any time.
Interference management and frequency spectrum share are the important subject of wireless communication system, and have had some more mature
Effective technical solution, is introduced separately below and analyzes.
(1) homologous ray interference management [3GPP TS 36.213, Access Network, Evolved Universal
Terrestrial Radio Access Network (E-UTRAN), v15.0.0, Dec.2017. and 3GPP TS
36.423,X2application protocol(X2AP),Evolved Universal Terrestrial Radio
Access Network(E-UTRAN),v15.0.0,Dec.2017.].Existing communication system, such as LTE/LTE-A, in order to improve
The availability of frequency spectrum, reduce between neighboring community because using identical physical resources block (Physical resource block, PRB) and
The signal receiving quality for influencing Cell Edge User especially defines the related signaling between adjacent base station for interference coordination.Tool
Body includes: overload indicator (Overload indicator, OI), high interference indicator (High interference
Indicator, HII), and it is opposite narrow band transmission power (Relative narrowband transmit power, RNTP).Its
In, OI and HII are used for uplink, and the user that OI identifies in this cell transmission bandwidths on which Physical Resource Block is seriously done
It disturbs；Which PRB has been used so as to cause high interference to adjacent area in HII identification transmission bandwidth.RNTP is used for downlink,
It is used to indicate the descending power information of each PRB in transmission bandwidth, neighboring community is carried out according to the RNTP power information received
Interference coordination, to reduce homologous ray inter-cell interference.However, these signalings are only used for characterizing difference in this cell transmission bandwidths
Signal quality on the position PRB does not include the signal interference state of frequency point except transmission bandwidth.
(2) [Beijing University of Post & Telecommunication's master thesis, spectrum-sharing techniques are ground in cognitive radio for different system interference management
Study carefully, on January 17th, 2013.And T.Xu, M.Zhang, T.Zhou, " Statistical Signal Transmission
Technology:Novel Perspective for 5G Enabled Vehicular Networking,”IEEE
Wireless Communications,vol.24,no.6,2017,pp.22-29.].Cognitive radio is considered as solving frequency
The effective way that spectrum resource lacks.Cognitive user utilizes the wireless environment around radio technology perception, the idle letter of selection access
Road, and switch the interference for improving communication quality and reduction to authorized user by dynamic spectrum.It determines for frequency spectrum perception and frequency spectrum
The main method of plan includes: the judgement of signal power threshold value, statistics characteristic analysis of signal etc..But the technology generally can not be distinguished
Interference source type, and the interaction not between adjacent base station.
(3) in engineering construction, also through frequently with deterministic parameters calculation analysis method, simulation method and existing net test side
Method etc. analyzes isomery interference source [Beijing Jiaotong University's master thesis, urn Wen Di, Interference Detection and classification between TD-LTE system
Research and realization.In March, 2015.].First two method is mainly used between base station and the interfering link budget of terminal room, auxiliary
Network deployment.For deployed system, concrete condition and coverage that existing net test carrys out Analysis interference are generallyd use, and
Determine solution.When the mutual interference situation that goal systems faces is complex, it is dry that artificial upper station is generallyd use in engineering
Investigation method is disturbed to determine interference source type and producing cause, solves interference to select suitably to evade scheme, guarantee system is just
Often work.The above problem generally by adjusting the physical means such as base station interval or physical antenna direction, carries out interference and evades, belong to
The interference basic means evading and solves are carried out in network deployment early period and operation, but can not solve during the network operation because of
User mobility, channel circumstance variation or the dynamic factors bring instantaneous interferences such as different system transmission that happen suddenly.
It is interfered under the scene with different system interference in short, existing concurrently with homologous ray adjacent area at present, existing interference management
It can not effectively identify the disturbance state information of each subband on Whole frequency band in the course of network operation with frequency spectrum share, distinguish
The type of interference source.Wherein, full frequency band includes the occupied frequency of subband of subband and unused portion that base station has used part
Spectrum.
When adjacent area interference is with different system interference in reply homologous ray in view of wireless system, different interference is often used
Administrative mechanism and frequency spectrum are using strategy, for example, for some base station, if interference source is that adjacent area is interfered, in order to reduce pair
The interference of homologous ray adjacent area terminal, which will actively reduce transmission power, or is disturbed at region and is selected to neighbour at it
Low subband is interfered to be transmitted in area；If interference source is different system interference, may select directly to abandon the subband, or at this
The signal transmission quality that subband is transmitted with lower code rate and modulation system to guarantee itself.Thus, effectively identify that homologous ray is adjacent
Area's interference and different system interference will be that wireless system needs the matter of utmost importance that solves.
Summary of the invention
It is an object of the invention to propose a kind of method of identification adjacent area interference and different system interference in wireless network, with
The interference source type of each subband is effectively identified on Whole frequency band.
The present invention also provides a kind of methods that adjacent area interference and different system interference is identified in wireless network, including following step
It is rapid:
S1: what current base station obtained the subband of the full frequency band C in region to be measured is disturbed situation, and obtains working as full frequency band C
Preceding base station subband uses map UA；
S2: if the region decision to be measured be current base station coverage area fringe region, current base station request
Neighbor base station subband is used map U by neighbor base stationBIssue current base station；
S3: neighbor base station receives the request of current base station in S2, and the neighbor base station subband for obtaining full frequency band C uses map UB
And send it to current base station；
S4: current base station receives the neighbor base station subband and uses map UB, according to each subband of current base station acquisition
Be disturbed situation and each subband in current base station subband using map UA, neighbor base station subband use map UBIn shape
State judges interference source type suffered by the subband.
Wherein, the step S4 judge interference source type that subband is subject to include: for each subband,
If there is interference in the subband,
If UBThe subband is also not used in instruction neighbor base station, then judging the subband, there is only different system interferences；
If UBInstruction neighbor base station has used the subband, then judges that the subband at least has an adjacent area interference, current base station into
One step judges in interference source with the presence or absence of different system interference；
If interference is not present in the subband,
If UBThe subband is also not used in instruction neighbor base station, judges that subband is noiseless；
If UBInstruction neighbor base station has used the subband, then judges that the subband is noiseless but there are the interference of potential adjacent area.
Wherein, the current base station further judges in interference source with the presence or absence of different system interference by comparing subband
Interfering energy judges with preset interference threshold value；If being higher than default interference threshold, judge the subband in addition to there are adjacent areas
Interference is outer, and there is also different system interferences；Conversely, judging the subband, there is only adjacent area interference.
Preferably, the interference threshold value is normalized to be greater than 0 and the value less than 1.
Wherein, the subband of the full frequency band C at the region to be measured be disturbed situation be by period of current base station or
Aperiodic full band scan, or by by current base station notify in its coverage area corresponding to region to be measured terminal into
Row is obtained with frequency or different-frequency measure and report measurement result to current base station.
The step S1 further includes judging whether at least one subband has interference in the region to be measured.
Preferably, the current base station subband uses map UAIncluding multiple each height corresponded respectively on full frequency band C
The state value of band, each state value are that 0 or 1,0 expression corresponds to the subband of the state value in the overlay area of current base station
It is not used, 1 indicates that the subband for corresponding to the state value is used in the overlay area of current base station.
Another preferred embodiment is, the step S1 further includes that each subband on full frequency band C is numbered, and described
Current base station subband uses map UAIt is defined as whole number set of the subband used in the overlay area of current base station.
On the other hand, the present invention provides a kind of method of identification adjacent area interference and different system interference in wireless network, including
Following steps:
S1: what current base station obtained the subband of the full frequency band C in region to be measured is disturbed situation, and obtains working as full frequency band C
Preceding base station subband uses map UA；
S2: if the region decision to be measured be be not current base station coverage area fringe region, exist interference
The interference source of subband is judged as only different system interference.
Wherein, the subband of the full frequency band C at the region to be measured be disturbed situation be by period of current base station or
Aperiodic full band scan, or by by current base station notify in its coverage area corresponding to region to be measured terminal into
Row is obtained with frequency or different-frequency measure and report measurement result to current base station.
Preferably, the current base station subband uses map UAIncluding multiple each height corresponded respectively on full frequency band C
The state value of band, each state value are that 0 or 1,0 expression corresponds to the subband of the state value in the overlay area of current base station
It is not used, 1 indicates that the subband for corresponding to the state value is used in the overlay area of current base station.
Another preferred embodiment is, the step S1 further includes that each subband on full frequency band C is numbered, and described
Current base station subband uses map UAIt is defined as whole number set of the subband used in the overlay area of current base station.
The method that adjacent area interference and different system interference is identified in wireless network of the invention, passes through being disturbed for current base station
Situation, full frequency band current base station subband the use of map and region to be measured whether is fringe region, or pass through current base station
Be disturbed situation, the current base station subband of full frequency band uses the friendship between map and base station using map and adjacent base station subband
Mutually come the interference of comprehensive descision adjacent area and (or) different system interference, current base station is enabled effectively to identify every height on Whole frequency band
The interference source type of band combines frequency spectrum service efficiency so that targetedly interference be taken to evade with frequency spectrum using strategy
With the performance requirements such as transmission reliability.
Detailed description of the invention
Fig. 1 is the frequency spectrum exemplary diagram of full frequency band；
Fig. 2 is the scene that the method that adjacent area interference and different system interference are identified in wireless network according to the present invention is applicable in
Schematic diagram；
Fig. 3 is the method that adjacent area interference and different system interference is identified in wireless network according to an embodiment of the invention
Flow example figure.
Specific embodiment
It elaborates below to the embodiment of the present invention, the present embodiment carries out under the premise of the technical scheme of the present invention
Implement, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to following implementation
Example.
The present invention provides a kind of methods that adjacent area interference and different system interference is identified in wireless network, and it is suitable for simultaneously
There are the scenes of homologous ray adjacent area interference and different system interference, i.e., in some geographic area, classification of disturbance includes:
(1) there is no interference；
(2) only different system interference；
(3) only adjacent area is interfered；
(4) different system interference and adjacent area interference are existed simultaneously.
Specifically, as shown in Figure 1, it is assumed that the available frequency of a wireless transmitting system (hereinafter referred to as goal systems) authorization
Section, i.e. its full frequency band are C, and full frequency band C is C=C1+C2+C3；Each frequency sub-band (C simultaneously1, C2, C3) it can be divided into multiple sons again
Band (or being carrier wave, frequency point), goal systems can choose at least one subband transmission signal.In addition, full frequency band C is also possible to
Discrete spectrum.Multiple base stations in goal systems can choose identical or different subband transmission signal.When the neighboring community Liang Ge
It is base station selected using identical subband transmit when, may be subjected to the interference from adjacent cell in cell edge.When selection not
When same subband transmits, the interference from adjacent cell is not present in cell edge.
Due in full frequency band C, allowing multiple heterogeneous systems to carry out frequency spectrum by the modes such as frequency spectrum perception and carrier wave polymerization
Therefore resource-sharing under the interference scene that is applicable in of the present invention, when any subband of the goal systems in full frequency band C, needs
Consider that the adjacent cell in homologous ray interferes (hereinafter referred to as adjacent area interference), and dry with the burst of other different systems in frequency range
It disturbs.By taking 2 base station operation scenes in goal systems as an example, as shown in Fig. 2, for identification adjacent area interference in wireless network of the invention with
The interference scene that the method for different system interference is applicable in, current base station A is by two different systems in this cell coverage area
Unite (H1, H2) potential interference (hereinafter referred to as different system interference), neighbor base station B is by different in this cell coverage area
System (H1, H3) potential interference；Meanwhile if base station A and B have used identical subband, then, the covering for two base stations
The terminal user of (hereinafter referred to as cell edge region) in overlapping region, it is also possible to will receive adjacent area interference.It is worth noting that,
In Fig. 2, the interference that base station A and base station B are subject to is that adjacent area is interfered and from different system H1The superposition of interference signal.
It is illustrated in figure 3 in wireless network according to an embodiment of the invention and identifies adjacent area interference and different system interference
Method, specifically includes the following steps:
Step S1: current base station A obtain the subband of the full frequency band C in region to be measured be disturbed situation, and obtain full frequency band C
Current base station subband use map UA, wherein there is X2 interface between base station, dedicated for the information exchange between base station；
Wherein, the situation that is disturbed of the subband of the full frequency band C at region to be measured can be by period of current base station A or non-
The full band scan in period obtains, can also by being notified to correspond to region to be measured in its coverage area by current base station A
Terminal obtained with frequency or different-frequency measure and report measurement result to current base station A.
In the present embodiment, the current base station subband uses map UAIt is corresponded respectively on full frequency band C including multiple
The state value of each subband, each state value are subband the covering in current base station A that 0 or 1,0 expression corresponds to the state value
It is not used in cover area, 1 indicates that the subband for corresponding to the state value is used in the overlay area of current base station A.This
Outside, which uses map UAOther representations also can be used, such as further include on full frequency band C to step S1
Each subband be numbered, and the current base station subband use map UAIt is defined as in the overlay area of current base station A
The subband used whole number set.
In addition, step S1 further includes judging whether at least one subband has interference in the region to be measured.If so, to
It surveys region and there is interference, continue step S2；Otherwise, illustrate that region to be measured there is no interference, terminates in the wireless network
The method for identifying adjacent area interference and different system interference.
Step S2: judge the region to be measured whether the fringe region for the coverage area for being current base station A；If: if described
Region decision to be measured be current base station A coverage area fringe region, illustrate to need to identify interference source type, then current base
The A that stands gives neighbor base station B transmission solicited message, and neighbor base station subband is used map U by request neighbor base station BBIssue current base station
A, and need to continue step S3；If the region decision to be measured be be not current base station A coverage area fringe region,
Then it is judged as only different system interference in the presence of the interference source of the subband of interference, there is no the subbands of interference to be judged as that subband is noiseless,
The method of adjacent area interference and different system interference is identified in wireless network so as to complete the present invention.
In the present embodiment, neighbor base station subband uses map UBMap U is used with current base station subbandARepresentation
Unanimously.
Step S3: neighbor base station B receives the solicited message of current base station A, and the neighbor base station subband for obtaining full frequency band C uses
Map UBAnd send it to current base station A；
Step S4: current base station A, which receives neighbor base station subband, uses map UB, and according to each of current base station A acquisition
Be disturbed situation and each subband of subband use map U in current base station subbandA, neighbor base station subband use map UBIn
State judge interference source type that the subband is subject to one by one.
For each subband, if there is interference in the subband:
If 1) UBThe subband is also not used in instruction neighbor base station B, then judging the subband, there is only different system interferences；
If 2) UBInstruction neighbor base station B has used the subband, then judges that the subband at least has adjacent area interference, current base station
A further judges in interference source with the presence or absence of different system interference.
Wherein, the current base station A further judges that whether there is different system interference in interference source is by comparing subband
Interfering energy and preset interference threshold value judge, if being higher than default interference threshold, judge the subband in addition to existing
Adjacent area interference is outer, and there is also different system interferences；Conversely, judging the subband, there is only adjacent area interference.Interference threshold value, which can be, returns
One change is greater than 0 and the value less than 1, is also possible to other positive real numbers.
If interference is not present in the subband,
If UBThe subband is also not used in instruction neighbor base station B, judges that subband is noiseless.
If UBInstruction neighbor base station B has used the subband, then judges that the subband is noiseless but there are the interference of potential adjacent area.Its
In, there are adjacent area interference to represent that this moment is noiseless, but due to environment/user dynamic variation characteristic, at the next moment
It is interfered with the presence of certain probability.Therefore, judge that potential interference can be used for when subsequent frequency range is dispatched, suitably reducing this, there are potential
The priority of the frequency range of interference.
Analog result
By taking electric power wireless system as an example, full frequency band C workable for electric power wireless network is 223-226MHz and 229-
233MHz.User in the frequency range includes: that the base station of electric power wireless network and terminal, data radio station, military communication, astronomy are penetrated
Electricity etc..Using electric power wireless network as goal systems, then the potential interference source of goal systems base station includes: the adjacent area in goal systems
(such as data radio station, military communication or astronomical radio, bring different system dry for base station (adjacent area is brought to interfere) or different system interference source
It disturbs).The single subband bandwidth of electric power wireless network be 25kHz, therefore in full frequency band C amount to have 280 available subbands.
According to step S1, the current base station subband of acquired full frequency band C uses map UAFor the sequence of 280 bits,
Each bit respectively corresponds the subband use state of 280 subbands, and bit value indicates that the subband is not used by for 0, and bit takes
Value indicates that the subband is used for 1.
Acquired current base station subband uses map UAIt is as follows:
That is base station A has used preceding 10 subbands, remaining subband is not used.
What base station A obtained the subband of the full frequency band C in region to be measured is disturbed situation, judges at least one son of the region to be measured
There is interference in band (or for the base station A subband used or being the not used subband of base station A).Assuming that be disturbed subband number be 1,
3、5、25。
According to step S2, judge to obtain region to be measured as the fringe region of the coverage area of current base station A, then according to step
The neighbor base station subband that rapid S3 and S4 is obtained uses map UBIt is as follows:
That is neighbor base station B has used the 1st, 3,5,7,9,11,280 subband, remaining subband is not used.
According to step S4: base station A receives neighbor base station subband and uses map UB, and according to judge one by one each subband by
Interference source type, obtain:
For subband 1,3,5, base station B has use, then judges that subband 1,3,5 at least has an adjacent area interference, current base station A into
One step judges in interference source with the presence or absence of different system interference.
Assuming that the interfering energy of subband 1,3,5 is respectively 0.4,0.6,0.8,0.9, preset interference threshold value is 0.5, because
It is higher than pre-determined threshold for subband 3,5 interfering energies, therefore judges this subband 3,5 in addition to there are adjacent area interference, there is also different systems
Interference；Subband 1 and there is only adjacent area interference.
Subband 12-279, base station B are not used, the subband that there is interference for some of them then judges these subbands
There is only different system interferences；Otherwise judge that the subband is noiseless.For example, subband 25 has interference, but base station B is not used, then sentences
There are different system interferences for disconnected subband 25.
There is no interference for subband 7 and 9, but base station B has use, then judging subband 7 and 9, there are the interference of potential adjacent area.
There is no interference, base station B to use for subband 280, then judging subband 280, there are the interference of potential adjacent area.
Above-described, only presently preferred embodiments of the present invention, the range being not intended to limit the invention, of the invention is upper
Stating embodiment can also make a variety of changes.Made by i.e. all claims applied according to the present invention and description
Simply, equivalent changes and modifications fall within the claims of the invention patent.The not detailed description of the present invention is
Routine techniques content.
Claims (10)
1. identifying the method for adjacent area interference and different system interference in a kind of wireless network characterized by comprising
Step S1: the subband of the full frequency band C in current base station (A) acquisition region to be measured is disturbed situation, and obtains full frequency band C's
Current base station subband uses map UA；
Step S2: if the region decision to be measured be current base station (A) coverage area fringe region, current base station
(A) neighbor base station subband is used map U by request neighbor base station (B)BIssue current base station (A)；
Step S3: neighbor base station (B) receives the request of current base station (A) in S2, and the neighbor base station subband for obtaining full frequency band C uses
Map UBAnd send it to current base station (A)；
Step S4: current base station (A) receives the neighbor base station subband and uses map UB, situation is disturbed according to each subband
And each subband uses map U in current base station subbandA, neighbor base station subband use map UBIn state judge the son
With suffered interference source type.
2. identifying the method for adjacent area interference and different system interference in wireless network according to claim 1, which is characterized in that
The step S4 judge interference source type that subband is subject to include: for each subband,
If there is interference in the subband,
If UBThe subband is also not used in instruction neighbor base station (B), then judging the subband, there is only different system interferences；
If UBInstruction neighbor base station (B) has used the subband, then judges that the subband at least has an adjacent area interference, current base station (A) into
One step judges in interference source with the presence or absence of different system interference；
If interference is not present in the subband,
If UBThe subband is also not used in instruction neighbor base station (B), judges that subband is noiseless；
If UBInstruction neighbor base station (B) has used the subband, then judges that the subband is noiseless but there are the interference of potential adjacent area.
3. identifying the method for adjacent area interference and different system interference in wireless network according to claim 2, which is characterized in that
The current base station (A) further judge in interference source with the presence or absence of different system interference be by comparing subband interfering energy and
Preset interference threshold value judges；If being higher than default interference threshold, judge the subband in addition to also depositing there are other than the interference of adjacent area
In different system interference；Conversely, judging the subband, there is only adjacent area interference.
4. identifying the method for adjacent area interference and different system interference in wireless network according to claim 1, which is characterized in that
The situation that is disturbed of the subband of full frequency band C at the region to be measured is by period of current base station (A) or aperiodic complete
Band scan, or by notifying the terminal in its coverage area corresponding to region to be measured to carry out with frequency by current base station (A)
Or different-frequency measure and report measurement result to current base station (A) obtains.
5. identifying the method for adjacent area interference and different system interference in wireless network according to claim 1, which is characterized in that
The step S1 further includes judging whether at least one subband has interference in the region to be measured.
6. identifying the method for adjacent area interference and different system interference in wireless network according to claim 1, which is characterized in that
The current base station subband uses map UAIncluding multiple state values for corresponding respectively to each subband on full frequency band C, each
State value is that 0 or 1,0 expression is not used in the overlay area of current base station (A) corresponding to the subband of the state value, and 1
Indicate that the subband for corresponding to the state value is used in the overlay area of current base station (A).
7. identifying the method for adjacent area interference and different system interference in wireless network according to claim 1, which is characterized in that
The step S1 further includes each subband on full frequency band C being numbered, and the current base station subband uses map UAIt is fixed
Justice is gathered for whole numbers of the subband used in the overlay area of current base station (A).
8. identifying the method for adjacent area interference and different system interference in a kind of wireless network characterized by comprising
Step S1: the subband of the full frequency band C in current base station (A) acquisition region to be measured is disturbed situation, and obtains full frequency band C's
Current base station subband uses map UA；
Step S2: if the region decision to be measured be not current base station (A) coverage area fringe region, exist interference
The interference source of subband be judged as only different system interference.
9. identifying the method for adjacent area interference and different system interference in wireless network according to claim 8, which is characterized in that
The situation that is disturbed of the subband of full frequency band C at the region to be measured is by period of current base station (A) or aperiodic complete
Band scan, or by notifying the terminal in its coverage area corresponding to region to be measured to carry out with frequency by current base station (A)
Or different-frequency measure and report measurement result to current base station (A) obtains.
10. the method for identifying adjacent area interference and different system interference in wireless network according to claim 8, feature exist
In the current base station subband uses map UAIncluding multiple state values for corresponding respectively to each subband on full frequency band C, often
A state value is that 0 or 1,0 expression is not made in the overlay area of current base station (A) corresponding to the subband of the state value
With 1 indicates that the subband for corresponding to the state value is used in the overlay area of current base station (A).
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