CN108259112A - A kind of timeslot-based base station interference elimination method and device - Google Patents
A kind of timeslot-based base station interference elimination method and device Download PDFInfo
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- CN108259112A CN108259112A CN201611251761.XA CN201611251761A CN108259112A CN 108259112 A CN108259112 A CN 108259112A CN 201611251761 A CN201611251761 A CN 201611251761A CN 108259112 A CN108259112 A CN 108259112A
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- time slot
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0023—Interference mitigation or co-ordination
- H04J11/005—Interference mitigation or co-ordination of intercell interference
- H04J11/0056—Inter-base station aspects
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Abstract
The present invention relates to a kind of timeslot-based base station interference elimination method and device, wherein, this method includes：The interference information for obtaining base station judges the jamming pattern of base station；The protection symbol being disturbed according to jamming pattern adjustment in the special time slot of base station.The present invention protects the set-up mode of time slot by improvement, considers the proportioning of the flexible automatic descending time slot for adjusting special subframe of uplink and downlink capacity, protection time slot, ascending time slot simultaneously under atmospheric duct, and the interference so as to fulfill TD LTE evades and capacity allotment.The present invention can accurately parse base station sub-frame of uplink and be disturbed situation, and judge the uplink and downlink traffic case of website simultaneously, calculate optimal special subframe proportioning, the adjustment to interference source base station special time slot is added simultaneously, the disturbing effect under atmospheric duct effects is more fully eliminated, user is promoted and perceives.
Description
Technical field
The present invention relates to fields of communication technology, and in particular to a kind of timeslot-based base station interference elimination method and device.
Background technology
This part is introduced to reader may be with the relevant background technology of various aspects of the invention, it is believed that can be carried to reader
For useful background information, so as to which reader be contributed to more fully understand various aspects of the invention.It is, therefore, to be understood that our department
Point explanation be for the above purpose, and not form admission of prior art.
When eNodeB is sent to UE data, radio wave needs a period of time from eNodeB to UE, due to each UE and
The distance of eNodeB is different, therefore the near UE of distance eNodeB can first receive downlink signal, and after UE remote distance eNodeB
Receive downlink signal.It after one section of descending time slot, needs to reserve and carrys out one section of protection interval, in the protection interval, ensure institute
There is UE to have received downlink signal, and signal is handled.Then, all UE could be same in upcoming ascending time slot
When send uplink signal, i.e., in cell UE synchronize.
Simultaneously because in TD-LTE (Time Division Long Term Evolution, timesharing long term evolution) system,
Uplink and downlink use identical frequency, are operated in different time-gap, when having certain distance between the base station of same frequency,
Due to the propagation delay of wireless signal, the uplink and downlink signals between base station have certain overlapping, generate interference.As shown in Figure 1,
Different base station uplink and downlink signal interferes with each other in order to prevent, needs in ascending time slot and descending time slot setting protection
Gap.TD-LTE protects the set-up mode of time slot at present, mainly manually being inputted in a manner that operation maintenance center is by instruction
Fixed protection time slot, so as to fulfill the protection between uplink and downlink.
In the prior art, as shown in Fig. 2, in TD-LTE system, each frame (10ms) has 10 subframes, each subframe duration
1ms, subframe are divided into 3 kinds of types：Sub-frame of uplink, downlink subframe, special subframe, wherein special subframe user interval downstream subframe with
Sub-frame of uplink.As shown in figure 3, wherein each subframe contains 14 symbols, each symbol 0.07ms.As shown in figure 4, TD-LTE is macro
In base station, a complete uplink and downlink cycle includes 5 subframes (downlink subframe-special subframe-sub-frame of uplink-downlink or uplink
Subframe-downlink subframe), protection time slot is mainly configured in special subframe, and mode is：To 14 symbols of special subframe into
Row allotment is assigned as downlink data, protection time slot, ascending time slot.14 symbols of special subframe are assigned as specifically at present
Pattern, descending time slot, protection time slot, ascending time slot ratio are 10: 2: 2 or 3: 9: 2 etc..It has been generally acknowledged that wireless signal can only prolong straight line
Propagate propagated other than certain distance can rapid attenuation because without being interfered to remote base station, each OFDM
The time of (Orthogonal Frequency Division Multiplexing, orthogonal frequency division multiplexi) symbol is 1ms/
14≈0.0714ms.For example, A base stations are configured by special subframe 10: 2: 2, the protection time slots of two OFDM symbols has
0.0714ms*3*108The transmission guard space of m/s=21.4km has theoretically declined more than the website signal of the guard space
Reduce to very little, it is impossible to A base stations be interfered, but in atmospheric duct effects condition caused by extreme terrain and weather conditions
Under, electromagnetic wave can be propagated with the overlength distance of low attenuation, and transmission range can even reach more than 300km.Therefore it is imitated in waveguide
When answering, since the transmission range of other base stations is far, signal delay is larger, and the delay of signal is typically larger than scheduled
Time slot is protected, the base station that this phenomenon occurs that a distant place can be caused in the system of TD-LTE is to the interference of home base stations.
Invention content
Technical problems to be solved are how to provide a kind of timeslot-based base station interference elimination method and device.
For the defects in the prior art, the present invention provides a kind of timeslot-based base station interference elimination method and device,
The disturbing effect under atmospheric duct effects can comprehensively be eliminated.
In a first aspect, the present invention provides a kind of timeslot-based base station interference elimination method, including：
The interference information for obtaining base station judges the jamming pattern of base station；
The protection symbol being disturbed according to jamming pattern adjustment in the special time slot of base station.
Optionally, the interference information for obtaining base station includes：
The interference signal on each symbol of uplink is acquired compared with predetermined threshold value, is more than default threshold if up interference signal
Value, and the interference signal of uplink symbol in the presence of successively decreasing, then the jamming pattern of current base station is interfered for hangover.
Optionally, the protection symbol being disturbed in the special time slot of base station according to jamming pattern adjustment includes：
Judge whether interference influences the uplink signal in special time slot, without influencing the mo(u)ld top half symbol in sub-frame of uplink, then
Modification is disturbed the special time slot proportioning of base station.
Optionally, location interference source base station is further included, and adjusts the protection symbol in the special time slot of interference source base station；Its
Middle location interference source base station specifically includes：
Obtain the interference information for being disturbed base station protection time slot；
Obtain the interference information for being disturbed running gear on base station；
Positioning is disturbed the center of base station；
It calculates interference source base station and is disturbed the orientation of base station；
Believed according to the interference information for being disturbed base station protection time slot and the interference for being disturbed running gear on base station
Breath calculates interference source base station and the distance for being disturbed base station；
According to interference source base station and it is disturbed the orientation of base station and interference source base station and is disturbed the distance of base station and by dry
Disturb the center location interference source base station position of base station.
Optionally, uplink symbol or interference source base station descending time slot that adjustment is disturbed in the cluster ascending time slot of base station are further included
In downlink symbol, specifically include：
It obtains the downlink business load information of interference source base station and is disturbed the uplink service load information of base station；
It is changed according to the downlink business load information of the interference source base station and with the uplink service information for being disturbed base station
Symbol in the time slot of the relatively low interference source base station of business load is protection symbol；Or
The relatively low symbol being disturbed in the time slot of base station of business load is changed as protection symbol.
On the other hand, the present invention also provides a kind of timeslot-based base station interference blanking unit, including：
Interference information acquiring unit, the interference information for obtaining base station judge the jamming pattern of base station；
Interference base station time slot adjustment unit, for being disturbed the protection in the special time slot of base station according to jamming pattern adjustment
Symbol.
Optionally, interference information acquiring unit includes：
Interference information mode determination, for comparing interference signal and predetermined threshold value on each symbol of uplink, if
Uplink interference signal is more than predetermined threshold value, and the interference signal of uplink symbol then judges the interference mould of current base station in the presence of successively decreasing
Formula is interfered for hangover.
Optionally, the interference base station time slot adjustment unit includes：
Special time slot matches adjustment unit, for judging whether interference influences the uplink signal in special time slot, without shadow
The mo(u)ld top half symbol in sub-frame of uplink is rung, then modification is disturbed the special time slot proportioning of base station.
Optionally, interference source base station time slot adjustment unit is further included, for location interference source base station and adjusts special time slot
In protection symbol.
Optionally, the source base station time slot adjustment unit of disturbing includes：
Information acquisition unit obtains the interference information for being disturbed base station protection time slot；Acquisition is disturbed running gear on base station
Interference information；
Center positioning unit, for positioning the center for being disturbed base station；
Azimuth computing unit calculates interference source base station and is disturbed the orientation of base station；
Distance determining unit, for being disturbed the interference information of base station protection time slot according to and described being disturbed base station
The interference information of upper running gear calculates interference source base station and the distance for being disturbed base station；
Positioning unit, for according to interference source base station and being disturbed the orientation of base station and interference source base station and being disturbed base station
Distance and be disturbed the center location interference source base station position of base station.
As shown from the above technical solution, a kind of timeslot-based base station interference elimination method and device provided by the invention,
The set-up mode of time slot is protected by improvement, considers the flexible automatic adjusting special subframe of uplink and downlink capacity simultaneously under atmospheric duct
Descending time slot, protection time slot, ascending time slot proportioning, the interference so as to fulfill TD-LTE evade and capacity allotment.The present invention
Base station sub-frame of uplink can accurately be parsed and be disturbed situation, and the uplink and downlink traffic case for judging website is simultaneously, calculates optimal
Special subframe proportioning, while add the adjustment to interference source base station special time slot, more fully eliminate atmospheric duct effects
Under disturbing effect, promoted user perceive.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to make a simply introduction, it should be apparent that, the accompanying drawings in the following description is this hair
Some bright embodiments, for those of ordinary skill in the art, without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is TD-LTE frame structures schematic diagram in the prior art；
Fig. 2 is the subframe structure schematic diagram of TD-LTE frame structures in the prior art；
Fig. 3 is the subframe symbol schematic diagram of TD-LTE frame structures in the prior art；
Fig. 4 is TD-LTE special subframes structure schematic diagram in the prior art；
Fig. 5 is a kind of timeslot-based base station interference elimination method flow diagram in one embodiment of the invention；
Fig. 6 is that flow diagram is eliminated in interference in embodiment shown in FIG. 1；
Fig. 7 is that schematic diagram is interfered in base station in one embodiment of the invention；
Fig. 8 is a kind of timeslot-based base station interference elimination method flow diagram in another embodiment of the present invention；
Fig. 9 is that positioning is disturbed base station center schematic diagram in embodiment shown in Fig. 8；
Figure 10 is location interference source base station schematic diagram in embodiment shown in Fig. 8；
Figure 11 is the uplink symbol schematic diagram in interference source base station special time slot in one embodiment of the invention；
Figure 12 is a kind of timeslot-based base station interference blanking unit schematic diagram in one embodiment of the invention.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
All other embodiments obtained without creative efforts shall fall within the protection scope of the present invention.
As shown in figure 5, the present invention provides a kind of timeslot-based base station interference elimination method, including：Obtain base station
Interference information judges the jamming pattern of base station；The protection symbol being disturbed according to jamming pattern adjustment in the special time slot of base station.
Below to the present invention and the timeslot-based base station interference elimination method provided.
As shown in fig. 6, base station, after operation is started, the disturbed condition of the sub-frame of uplink of itself will be detected in base station in real time, and
Generation sub-frame of uplink disturbed condition measurement report reports to base station interference blanking unit, base station interference blanking unit by S1 interfaces
The interference information of base station carrier and uplink and downlink portfolio are judged by the sub-frame of uplink disturbed condition measurement report reported, calculated
The special subframe time slot proportion scheme of carrier frequency, issues related to base station and is adjusted.
In the present invention, the interference signal on each symbol of uplink of each base station is acquired compared with predetermined threshold value, if
Uplink interference signal is more than predetermined threshold value, and the interference signal of uplink symbol in the presence of successively decreasing, then the jamming pattern of current base station is
Hangover interference.It is specific as shown in fig. 7, if it is uplink interference level threshold value to be more than -105dbm by uplink interference signal, it is seen that
2 uplink symbols all receive interference before S0, S1.And there are decreasing phenomenon, that is, trailing phenomenon for disturbed processes, then judge by this
The base station group of interference causes for ducting.Base station interference blanking unit is dry according to the parsing base station of base station reported data
Situation is disturbed, if it find that (being more than a certain numerical value, can judge to set from the background with system) base stations a large amount of in the same area are deposited
In uplink interference, then analytical model is opened, base station interference blanking unit calculates the special subframe time slot proportion scheme of carrier frequency, under
The related to base station of hair is adjusted.
In the present invention, the protection symbol being disturbed in the special time slot of base station according to jamming pattern adjustment includes：Judge
Whether interference influences the uplink signal in special time slot, and without influencing the mo(u)ld top half symbol in sub-frame of uplink, then modification is disturbed base
The special time slot proportioning stood.Due to base station protection time slot adjustment can cause it is inconsistent with the time slot proportion of peripheral base station, to
Family terminal impacts, it is therefore necessary to which the base station cluster by there is isolation strip carries out unified adjustment.It is only influenced if up interference special
Uplink symbol in different subframe, without influencing the uplink symbol in sub-frame of uplink, then by sending instructions under the interference blanking unit of base station
Modification is disturbed the special subframe of base station cluster, is subject to the uplink symbol number being disturbed in the special subframe for be disturbed base station, will
The special time slot of base station is made an amendment in entire cluster.Specifically for example：In certain interference cluster when base station special time slot uplink, protection, downlink
Gap proportioning is 3: 2: 9, and uplink symbol number is 9, and the uplink symbol number being disturbed is preceding 3, then accords with preceding 3 uplinks being disturbed
Protection time slot number is revised as, i.e., all base station special time slots proportioning in the cluster is revised as 3: 5: 6.
As shown in figure 8, in the present invention, if after the protection symbol being disturbed in the special time slot of base station has been adjusted according to
So there is interference, then need further to adjust the protection symbol in the special time slot of interference source base station.Due to TD-LTE base stations spy
The symbolic number of different time slot can not be extended for 14, if be disturbed all uplink symbols of the entire protection time slot of base station all by
Interference, while the preceding L symbol of ascending time slot also receive interference, then it, must in addition to adjusting and being disturbed the special time slot of base station
The preceding L symbol of former sub-frame of uplink need be also configured as to the protection symbol for sending, receiving without data, base certainly will be disturbed
The normal upstream capacity stood can incur loss.In order to avoid being disturbed the loss of the up-link capacity of base station, base station interference blanking unit
The interference source base station of atmospheric duct effects can be analyzed according to the symbol and cell being disturbed.Specifically include location interference source base
It stands, and adjusts the protection symbol in the special time slot of interference source base station, location interference source base station specifically includes：Acquisition is disturbed base
It stands and protects the interference information of time slot；Obtain the interference information for being disturbed running gear on base station；Positioning is disturbed the centre bit of base station
It puts；It calculates interference source base station and is disturbed the orientation of base station；According to the interference information for being disturbed base station protection time slot and it is disturbed
The interference information of running gear calculates interference source base station and the distance for being disturbed base station on base station；According to interference source base station with being disturbed
The orientation and interference source base station of base station are with being disturbed the distance of base station and being disturbed the center location interference source base station of base station
Position.
Analysis is disturbed the disturbed condition of base station protection time slot, and the protection symbolic number N for the special subframe being disturbed is disturbed
Special time slot uplink symbol number M.Such as be disturbed the special time slot proportioning of base station as 9: 3: 2, then the special son being disturbed
Frame uplink symbol is 2, while 3 certainty of the protection symbol of special subframe are also interfered.
Analysis is disturbed the disturbed condition of base station ascending time slot, the uplink symbol number L for the sub-frame of uplink being disturbed.Such as Fig. 7
Shown preceding 2 symbols are disturbed, then the sub-frame of uplink uplink symbol being disturbed is 2.
As shown in figure 9, the center location interference source base station position by being disturbed base station.Due to each base station
Latitude and longitude information all predefine and want, therefore at the position of location interference source base station for determining interference source, it is fixed to need
The center of base station group is disturbed, the longitude for being disturbed base station group is X respectively1, X2, X3...Xn, latitude Y1, Y2,
Y3...Yn.The center latitude for being then disturbed base station group isCenter latitude is
As shown in Figure 10, since antenna used in TD-TLE base stations is mostly directional aerial, base station can be disturbed according to each
The azimuthal angle calculation interference source base station of the interfered cell of most serious is with being disturbed base station place orientation.By base station interference blanking unit
The azimuth for the interfered cell for being each disturbed base station most serious is taken out respectively, and base station A, B, C...N most serious receives interfered cell
Azimuth is respectively θ1, θ2, θ3...θn.It is calculated and interfered according to the declinometer of each interfered cell for being disturbed base station most serious
Orientation where source base station is
As shown in Figure 10, according to the interference information and the interference for being disturbed running gear on base station for being disturbed base station protection time slot
Information calculates interference source base station and the distance for being disturbed base station.The special subframe protection symbolic number N being disturbed, the spy being disturbed
Different subframe uplink symbolic number M, the uplink symbol number L of sub-frame of uplink, the symbolic number P=N+M+L being always disturbed.Each symbol is by electricity
It is about 21.4km that magnetic wave light velocity propagation, which calculates distance, and interference source base station is with being disturbed base station distance as S=P*21.4km.Such as by
The symbol that is disturbed of interference base station is：Protection symbol in special subframe 3, the uplink symbol in special subframe 2, during uplink
Uplink symbol in gap 2, totally 7 symbols.Each symbol calculates distance about 21.4km, 7 symbols by electromagnetic wave light velocity propagation
Number it is：7*21.4km=149.8km
As shown in Figure 10, it according to interference source base station and is disturbed the orientation of base station and interference source base station and is disturbed base station
Distance and the center location interference source base station position for being disturbed base station.For example, show that interference source base station is being disturbed base station
Using due north as 0 degree of calculating, θ is rotated clockwiseaAfterwards, the position of distance P*21.4km.
As shown in figure 11, after location interference source base station by base station interference blanking unit by sending instruction modification interference source base
The special time slot stood ensures that the ascending time slot for being disturbed base station is interference-free, i.e., will be under in the special time slot of interference source base station
Row symbol reduces L, and protection symbol increases L.Therefore, because the last one downlink symbol of interference source base station shifts to an earlier date, pass through
It will be fallen in the protection symbol for the special subframe for being disturbed base station after atmospheric duct effects, so as to eliminate interference.
As shown in figure 8, in the present invention, if the protection symbol in the special time slot for having adjusted adjustment interference source base station
After still remain interference, then need further to adjust adjustment and be disturbed uplink symbol or interference source base station in the ascending time slot of base station
Downlink symbol in descending time slot.Specifically, disturbed condition generation uplink of the sub-frame of uplink of itself will be detected in base station in real time
The loading condition of base station is also reported into base station interference blanking unit by S1 interfaces while frame disturbed condition measurement report, such as
The uplink symbol of fruit interference source base station special time slot is disturbed the dry atmospheric duct effects of base station and causes less than L to eliminate
Interference, then must adjust the descending time slot of interference source base station or be disturbed the ascending time slot of base station.It specifically includes：It obtains dry
It disturbs the downlink business load information of source base station and is disturbed the uplink service load information of base station；According to the downlink of interference source base station
It traffic load information and and is disturbed in the time slot of the relatively low interference source base station of uplink service information modification business load of base station
Symbol for protection symbol；Or the relatively low symbol being disturbed in the time slot of base station of business load is changed as protection symbol.Specifically
Ground, the downlink business of base station interference blanking unit comparison interference source base station and the uplink service for being disturbed base station, compare busy journey
Degree if a wherein side is more busy or even congestion, changes the symbol in the opposing party's time slot to protect symbol not transceiving data,
In this way in the capacity for avoiding also having ensured two aspect base stations while interference.
Further to embody timeslot-based base station interference elimination method provided by the invention, superiority, this law invention
A kind of timeslot-based base station interference blanking unit using the above method is also provided, as shown in figure 12, which includes：Interference
Information acquisition unit, the interference information for obtaining base station judge the jamming pattern of base station；Interference base station time slot adjustment unit is used
In the protection symbol being disturbed according to jamming pattern adjustment in the special time slot of base station.Below to the present invention and provide based on when
The base station interference blanking unit expansion detailed description of gap, in the present invention, the tool of timeslot-based base station interference blanking unit
Body running process is similar with the flow of the above method, is referred to above method execution, just no longer repeats one by one herein.
In this law invention, interference information acquiring unit includes：Interference information mode determination, it is every for comparing uplink
Interference signal and predetermined threshold value on a symbol are more than predetermined threshold value, and the interference letter of uplink symbol if up interference signal
Number presence is successively decreased, then judges that the jamming pattern of current base station is interfered for hangover.Interference base station time slot adjustment unit includes：When special
Gap matches adjustment unit, for judging whether interference influences the uplink signal in special time slot, without influencing in sub-frame of uplink
Mo(u)ld top half symbol, then modification are disturbed the special time slot proportioning of base station.The special time slot of base station is disturbed according to jamming pattern adjustment
In protection symbol include：Judge whether interference influences the uplink signal in special time slot, it is upper in sub-frame of uplink without influencing
Type symbol, then modification are disturbed the special time slot proportioning of base station.Since the adjustment of base station protection time slot can cause and peripheral base station
Time slot proportion it is inconsistent, user terminal is impacted, it is therefore necessary to which the base station cluster by there is isolation strip carries out unified adjustment.Such as
Fruit uplink interference is the uplink symbol influenced in special subframe, without influencing the uplink symbol in sub-frame of uplink, then by base station
Interference blanking unit issues the special subframe that instruction modification is disturbed base station cluster, is disturbed with being disturbed in the special subframe of base station
Uplink symbol number subject to, the special time slot of base station in entire cluster is made an amendment.Specifically for example：When base station is special in certain interference cluster
Gap uplink, protection, descending time slot proportioning are 3: 2: 9, and uplink symbol number is 9, and the uplink symbol number being disturbed is preceding 3, then will
Preceding 3 uplink symbols being disturbed are revised as protection time slot, i.e., all base station special time slots proportioning in the cluster is revised as 3: 5:
6。
The device further includes interference source base station time slot adjustment unit in the present invention, for location interference source base station and adjusts
Protection symbol in special time slot.Source base station time slot adjustment unit is disturbed to include：Information acquisition unit, acquisition are disturbed base station protection
The interference information of time slot；Obtain the interference information for being disturbed running gear on base station；Center positioning unit, for positioning by dry
Disturb the center of base station；Azimuth computing unit calculates interference source base station and is disturbed the orientation of base station；Distance determining unit,
For calculating interference source according to the interference information for being disturbed base station protection time slot and the interference information for being disturbed running gear on base station
Base station and the distance for being disturbed base station；Positioning unit, for according to interference source base station and the orientation and interference source that are disturbed base station
Base station is with being disturbed the distance of base station and being disturbed the center location interference source base station position of base station.Analysis is disturbed base station
Protect the disturbed condition of time slot, the protection symbolic number N for the special subframe being disturbed, the uplink symbol number for the special time slot being disturbed
M.Such as being disturbed the special time slot proportioning of base station as 9: 3: 2, then the special subframe uplink symbol being disturbed is 2, while special
3 certainty of protection symbol of different subframe are also interfered.Analysis is disturbed the disturbed condition of base station ascending time slot, and what is be disturbed is upper
The uplink symbol number L of row subframe.Preceding 2 symbols as shown in Figure 7 are disturbed, then the sub-frame of uplink uplink symbol being disturbed is 2
It is a.
As shown in figure 9, the center location interference source base station position by being disturbed base station.Due to each base station
Latitude and longitude information all predefine and want, therefore at the position of location interference source base station for determining interference source, it is fixed to need
The center of base station group is disturbed, the longitude for being disturbed base station group is X respectively1, X2, X3...Xn, latitude Y1, Y2,
Y3...Yn.The center latitude for being then disturbed base station group isCenter latitude is
As shown in Figure 10, since antenna used in TD-TLE base stations is mostly directional aerial, base station can be disturbed according to each
The azimuthal angle calculation interference source base station of the interfered cell of most serious is with being disturbed base station place orientation.By base station interference blanking unit
The azimuth for the interfered cell for being each disturbed base station most serious is taken out respectively, and base station A, B, C...N most serious receives interfered cell
Azimuth is respectively θ1, θ2, θ3...θn.It is calculated and interfered according to the declinometer of each interfered cell for being disturbed base station most serious
Orientation where source base station is
As shown in Figure 10, according to the interference information and the interference for being disturbed running gear on base station for being disturbed base station protection time slot
Information calculates interference source base station and the distance for being disturbed base station.The special subframe protection symbolic number N being disturbed, the spy being disturbed
Different subframe uplink symbolic number M, the uplink symbol number L of sub-frame of uplink, the symbolic number P=N+M+L being always disturbed.Each symbol is by electricity
It is about 21.4km that magnetic wave light velocity propagation, which calculates distance, and interference source base station is with being disturbed base station distance as S=P*21.4km.Such as by
The symbol that is disturbed of interference base station is：Protection symbol in special subframe 3, the uplink symbol in special subframe 2, during uplink
Uplink symbol in gap 2, totally 7 symbols.Each symbol calculates distance about 21.4km, 7 symbols by electromagnetic wave light velocity propagation
Number it is：7*21.4km=149.8km
As shown in Figure 10, it according to interference source base station and is disturbed the orientation of base station and interference source base station and is disturbed base station
Distance and the center location interference source base station position for being disturbed base station.For example, show that interference source base station is being disturbed base station
Using due north as 0 degree of calculating, θ is rotated clockwiseaAfterwards, the position of distance P*21.4km.
The device in the present invention further includes and is disturbed base station ascending time slot adjustment unit and the adjustment of interference source base station time slot
Unit is specifically included and is used for：The downlink business load information for obtaining interference source base station and the uplink service for being disturbed base station load
Information；Business load is changed according to the downlink business load information of interference source base station and with the uplink service information for being disturbed base station
Symbol in the time slot of relatively low interference source base station is protection symbol；Or the time slot for being disturbed base station that modification business load is relatively low
In symbol for protection symbol.The downlink business of base station interference blanking unit comparison interference source base station and the uplink for being disturbed base station
Business compares busy degree, if a wherein side is more busy or even congestion, it is protection to change the symbol in the opposing party's time slot
Symbol not transceiving data, in this way in the capacity for avoiding also having ensured two aspect base stations while interference.
In conclusion a kind of timeslot-based base station interference elimination method provided by the invention and device, are protected by improving
The set-up mode of time slot is protected, when considering the downlink of the flexible automatic adjusting special subframe of uplink and downlink capacity simultaneously under atmospheric duct
Gap, the proportioning for protecting time slot, ascending time slot, the interference so as to fulfill TD-LTE evades and capacity allotment.The present invention can be accurate
Parsing base station sub-frame of uplink is disturbed situation, and the uplink and downlink traffic case for judging website is simultaneously, calculates optimal special son
Frame matches, while adds the adjustment to interference source base station special time slot, more fully eliminates the interference under atmospheric duct effects
Effect promotes user and perceives.
Intelligent cashier system and cash method provided by the invention, it is whole by the first cash register communicated to connect with server-side
End, the second cashier terminal and third cash register management terminal are suitble to the strong concurrent cash register management system of more scenes, all at present to meet
Operation under such as general merchandise, shopping center, the more industry situations of supermarket.
It should be understood by those skilled in the art that, embodiments herein can be provided as method, system or computer program
Product.Therefore, the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware can be used in the application
Apply the form of example.Moreover, the computer for wherein including computer usable program code in one or more can be used in the application
The computer program production that usable storage medium is implemented on (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The application is with reference to the flow according to the method for the embodiment of the present application, equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that it can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided
The processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that the instruction performed by computer or the processor of other programmable data processing devices is generated for real
The device of function specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction generation being stored in the computer-readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps are performed on calculation machine or other programmable devices to generate computer implemented processing, so as in computer or
The instruction offer performed on other programmable devices is used to implement in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any this practical relationship or sequence.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only will including those
Element, but also including other elements that are not explicitly listed or further include as this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence " including one ... ", it is not excluded that
Also there are other identical elements in the process, method, article or apparatus that includes the element.Term " on ", " under " etc.
The orientation or position relationship of instruction are based on orientation shown in the drawings or position relationship, are for only for ease of the description present invention and letter
Change description rather than instruction or imply signified device or element must have specific orientation, with specific azimuth configuration and
Operation, therefore be not considered as limiting the invention.Unless otherwise clearly defined and limited, term " installation ", " connected ",
" connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected；Can be
Mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary, can be two
Connection inside element.For the ordinary skill in the art, above-mentioned term can be understood at this as the case may be
Concrete meaning in invention.
In the specification of the present invention, numerous specific details are set forth.Although it is understood that the embodiment of the present invention can
To put into practice without these specific details.In some instances, well known method, structure and skill is not been shown in detail
Art, so as not to obscure the understanding of this description.Similarly, it should be understood that disclose in order to simplify the present invention and helps to understand respectively
One or more of a inventive aspect, above in the description of exemplary embodiment of the present invention, each spy of the invention
Sign is grouped together into sometimes in single embodiment, figure or descriptions thereof.It however, should not be by the method solution of the disclosure
It releases and is intended in reflection is following：I.e. the claimed invention requirement is than the feature that is expressly recited in each claim more
More features.More precisely, as the following claims reflect, inventive aspect is less than single reality disclosed above
Apply all features of example.Therefore, it then follows thus claims of specific embodiment are expressly incorporated in the specific embodiment,
Wherein each claim is in itself as separate embodiments of the invention.It should be noted that in the absence of conflict, this
The feature in embodiment and embodiment in application can be combined with each other.The invention is not limited in any single aspect,
Any single embodiment is not limited to, is also not limited to the arbitrary combination and/or displacement of these aspects and/or embodiment.And
And can be used alone the present invention each aspect and/or embodiment or with other one or more aspects and/or its implementation
Example is used in combination.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution recorded in foregoing embodiments either to which part or all technical features into
Row equivalent replacement；And these modifications or replacement, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme should all cover in the claim of the present invention and the range of specification.
Claims (10)
1. a kind of timeslot-based base station interference elimination method, which is characterized in that including：
The interference information for obtaining base station judges the jamming pattern of base station；
The protection symbol being disturbed according to jamming pattern adjustment in the special time slot of base station.
2. base station interference elimination method according to claim 1, which is characterized in that the interference information packet for obtaining base station
It includes：
The interference signal on each symbol of uplink is acquired compared with predetermined threshold value, is more than predetermined threshold value if up interference signal,
And the interference signal of uplink symbol in the presence of successively decreasing, then the jamming pattern of current base station is interfered for hangover.
3. base station interference elimination method according to claim 1, which is characterized in that described to be adjusted according to jamming pattern by dry
The protection symbol disturbed in the special time slot of base station includes：
Judge whether interference influences the uplink signal in special time slot, without influencing the mo(u)ld top half symbol in sub-frame of uplink, then change
It is disturbed the special time slot proportioning of base station.
4. base station interference elimination method according to claim 1, which is characterized in that location interference source base station is further included, and
Adjust the protection symbol in the special time slot of interference source base station；Wherein location interference source base station specifically includes：
Obtain the interference information for being disturbed base station protection time slot；
Obtain the interference information for being disturbed running gear on base station；
Positioning is disturbed the center of base station；
It calculates interference source base station and is disturbed the orientation of base station；
According to the interference information for being disturbed base station protection time slot and the interference information meter for being disturbed running gear on base station
Calculate interference source base station and the distance for being disturbed base station；
According to interference source base station and it is disturbed the orientation of base station and interference source base station and is disturbed the distance of base station and is disturbed base
The center location interference source base station position stood.
5. base station interference elimination method according to claim 1, which is characterized in that further include adjustment and be disturbed base station uplink
The downlink symbol in uplink symbol or interference source base station descending time slot in time slot, specifically includes：
It obtains the downlink business load information of interference source base station and is disturbed the uplink service load information of base station；
Business is changed according to the downlink business load information of the interference source base station and with the uplink service information for being disturbed base station
It is protection symbol to load the symbol in the time slot of relatively low interference source base station；Or
The relatively low symbol being disturbed in the time slot of base station of business load is changed as protection symbol.
6. a kind of timeslot-based base station interference blanking unit, which is characterized in that including：
Interference information acquiring unit, the interference information for obtaining base station judge the jamming pattern of base station；
Interference base station time slot adjustment unit, for being disturbed the protection character in the special time slot of base station according to jamming pattern adjustment
Number.
7. base station interference elimination method according to claim 6, which is characterized in that interference information acquiring unit includes：
Interference information mode determination, for comparing interference signal and predetermined threshold value on each symbol of uplink, if up
Interference signal is more than predetermined threshold value, and the interference signal of uplink symbol in the presence of successively decreasing, then the jamming pattern for judging current base station is
Hangover interference.
8. base station interference elimination method according to claim 6, which is characterized in that the interference base station time slot adjustment unit
Including：
Special time slot matches adjustment unit, for judging whether interference influences the uplink signal in special time slot, without in influence
Mo(u)ld top half symbol in row subframe, then modification are disturbed the special time slot proportioning of base station.
9. base station interference elimination method according to claim 6, which is characterized in that further include the adjustment of interference source base station time slot
Unit for location interference source base station and adjusts the protection symbol in special time slot.
10. base station interference elimination method according to claim 6, which is characterized in that described to disturb source base station time slot adjustment list
Member includes：
Information acquisition unit obtains the interference information for being disturbed base station protection time slot；It obtains and is disturbed the dry of running gear on base station
Disturb information；
Center positioning unit, for positioning the center for being disturbed base station；
Azimuth computing unit calculates interference source base station and is disturbed the orientation of base station；
Distance determining unit, for being disturbed the interference information of base station protection time slot according to and described being disturbed base station uplink
It sails the interference information for being and calculates interference source base station and the distance for being disturbed base station；
Positioning unit, for according to interference source base station and be disturbed base station orientation and interference source base station and be disturbed base station away from
From with the center location interference source base station position that is disturbed base station.
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| CN201611251761.XA CN108259112B (en) | 2016-12-29 | 2016-12-29 | Method and device for eliminating base station interference based on time slot |
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| CN201611251761.XA CN108259112B (en) | 2016-12-29 | 2016-12-29 | Method and device for eliminating base station interference based on time slot |
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| CN110971312A (en) * | 2018-09-30 | 2020-04-07 | 中国电信股份有限公司 | Method and device for processing interference between base stations caused by atmospheric waveguide |
| WO2020134122A1 (en) * | 2018-12-27 | 2020-07-02 | 大唐移动通信设备有限公司 | Method, system and device for circumventing far-end interference |
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