CN103067927A - Optimization method and device of inter-cell interference - Google Patents
Optimization method and device of inter-cell interference Download PDFInfo
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- CN103067927A CN103067927A CN2013100079428A CN201310007942A CN103067927A CN 103067927 A CN103067927 A CN 103067927A CN 2013100079428 A CN2013100079428 A CN 2013100079428A CN 201310007942 A CN201310007942 A CN 201310007942A CN 103067927 A CN103067927 A CN 103067927A
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Abstract
The invention provides an optimization method and a device of inter-cell interference. The optimization method of the inter-cell interference includes the steps of collecting data of a current network and drive test data, obtaining marginal areas of the cell according to a listing and geographic information of whole-network cells, obtaining the number of same-time same-frequency resources of an adjacent cell according to the data of the current network aiming at the current cell, wherein the same-time same-frequency resources of the adjacent cell is the same-time same frequency resources when the physical resource mapping of the adjacent cell and the physical resource mapping of the cell are identical, obtaining the received power of the adjacent cell based on the drive test data and the marginal areas of the cell and aiming at the current cell, obtaining the same frequency interference weight of the adjacent cell to the current cell according to the number of the same-time same-frequency resources of the adjacent cell, and adjusting the parameter of the current adjacent cell when the same frequency interference weight of the adjacent cell to the current cell exceeds the corresponding covering threshold. The optimization method of the inter-cell interference can better optimize the inter-cell interference so as to improve network coverage performance of the cell.
Description
Technical field
The present invention relates to wireless communication technology field, particularly relate to optimization method and the device that disturb a kind of many adjacent areas.
Background technology
For LTE (Long Term Evolution, Long Term Evolution) system, the OFDMA(OFDM of the uniqueness that it adopts, Orthogonal Frequency Division Multiple Access) access way, user profile in this residential quarter is carried on the mutually orthogonal different carrier, so all interference come from other residential quarters.User for center of housing estate. itself is just closer from the distance of base station, and the interference signal of outer residential quarter distance is far away, its SINR(Signal to Interference plus Noise Ratio then, Signal to Interference plus Noise Ratio) relatively large: but for the user of cell edge, because it is larger to its interference ratio that neighbor cell takies the user of same carrier resource, itself is far away apart from the base station in addition, its SINR is relatively just less, although cause the throughput of residential quarter integral body higher, the QoS of customer of cell edge is relatively poor. throughput is lower.Therefore, in the LTE system, the optimization of presence of intercell interference is extremely important.
The optimization method of existing a kind of presence of intercell interference carries out emulation according to data such as electronic chart and propagation models to the wireless coverage in the zone, carries out interference optimization according to the LTE system descending interference that simulation result is determined; But, because fixing model is used in emulation, and in the real network, the UE(subscriber equipment, User Equipment) it also is dynamic change that the dynamic change that takies resource causes presence of intercell interference, like this, and the coverage condition that simulation result can't the precise evaluation real network, this simulation result is poor for the directiveness of the optimization of presence of intercell interference, thereby so that the effect of optimization of presence of intercell interference is undesirable.
In a word, need the urgent technical problem that solves of those skilled in the art to be exactly: how can carry out better the optimization of presence of intercell interference.
Summary of the invention
Technical problem to be solved by this invention provides optimization method and the device that disturb a kind of many adjacent areas, can carry out better the optimization of presence of intercell interference, thereby can improve the network covering property of residential quarter.
In order to address the above problem, the invention discloses the optimization method that disturb a kind of many adjacent areas, comprising:
Gather existing network data and drive test data;
According to the whole network cell list and geographic information data, obtain cell edge region;
For current area, according to the same time-frequency resource quantity of its adjacent area of described existing network data acquisition; The mapping of physical resource that the same time-frequency resource of described adjacent area is the adjacent area and the physical resource of this current residential quarter shine upon the running time-frequency resource of adjacent area when identical;
For current area, obtain the received power of its adjacent area according to described drive test data and its cell edge region;
For current area, according to same time-frequency resource quantity and the received power of its adjacent area, obtain its adjacent area to the co-channel interference weight of this current residential quarter;
In the adjacent area co-channel interference weight of this current residential quarter is surpassed accordingly when covering thresholding, the parameter of this adjacent area is adjusted.
Preferably, network configuration data and the call log data of described existing network packet purse rope unit;
Then described for current area, the step of the same time-frequency resource quantity of its adjacent area of the described existing network data acquisition of foundation comprises:
According to the network configuration data of described network element, obtain the physical resource mapping position of DRS (Dedicated Reference Signal) CRS and the control channel of current area and adjacent area thereof;
According to described call log data, the running time-frequency resource position that obtains the Traffic Channel of current area and adjacent area thereof;
According to the physical resource mapping position of CRS and the control channel of current area and adjacent area thereof, obtain the same time-frequency resource quantity of CRS and the control channel of its adjacent area;
According to the running time-frequency resource position of the Traffic Channel of current area and adjacent area thereof, obtain the same time-frequency resource quantity of the Traffic Channel of its adjacent area.
Preferably, describedly in the adjacent area co-channel interference weight of this current residential quarter is surpassed accordingly when covering thresholding, to the step that the parameter of this adjacent area is adjusted, comprises at least in the following adjustment one or more:
Adjust the Physical Cell Identifier of this adjacent area, adjust the antenna parameter of this adjacent area, reach, adjust the power of this adjacent area.
Preferably, describedly in the adjacent area co-channel interference weight of this current residential quarter is surpassed accordingly when covering thresholding, the step to the parameter of this adjacent area is adjusted comprises:
The parameter adjustment worker singly is issued to existing network, the parameter of this adjacent area is adjusted according to described parameter adjustment worker is single by existing network.
Preferably, the step of the antenna parameter of this adjacent area of described adjustment comprises: increase the Downtilt of this adjacent area, and/or, reduce the antenna height of this adjacent area.
Preferably, the step of the power of this adjacent area of described adjustment comprises:
In the adjacent area CRS co-channel interference weight of this current residential quarter is surpassed accordingly when covering thresholding, reduce the CRS power of this adjacent area;
In the adjacent area control channel co-channel interference weight of this current residential quarter is surpassed accordingly when covering thresholding, reduce the control channel power of this adjacent area;
In the adjacent area Traffic Channel co-channel interference weight of this current residential quarter surpassed and to cover thresholding accordingly, and coordinating district interference ICIC switch reduces the service channel power of this adjacent area when cutting out.
Preferably, describedly in the adjacent area co-channel interference weight of this current residential quarter is surpassed accordingly when covering thresholding, the step to the parameter of this adjacent area is adjusted comprises:
Adjust determining step: judge whether to exist the co-channel interference weight to this current residential quarter to surpass the corresponding adjacent area that covers thresholding, if, then with corresponding adjacent area as adjacent area to be adjusted, and execution statistic procedure, the initial mark of described adjacent area to be adjusted is not for adjusting, and current adjustment number of times is 0;
Statistic procedure: add up all adjacent areas to be adjusted;
Set-up procedure: from the adjacent area to be adjusted of adding up, select arbitraryly, and according to its co-channel interference weight to this current residential quarter, it is carried out parameter adjustment;
Sign step: to carrying out the adjacent area of parameter adjustment, its sign is revised as adjusted;
Sign determining step: according to the sign of adjacent area to be adjusted, judge in the adjacent area to be adjusted of adding up whether have adjusted adjacent area, if then return to carry out and adjust determining step, otherwise carry out the iteration determining step;
The iteration determining step; Judge whether current adjustment number of times has reached iterations, if then return to carry out and adjust determining step, otherwise return the execution statistic procedure.
Preferably, describedly in the adjacent area co-channel interference weight of this current residential quarter is surpassed accordingly when covering thresholding, the step to the parameter of this adjacent area is adjusted comprises:
Descending is carried out to the co-channel interference weight of this current residential quarter in all adjacent areas;
Preferentially the co-channel interference weight to this current residential quarter that comes the front being surpassed the corresponding parameter that covers the adjacent area of thresholding adjusts.
On the other hand, the invention also discloses the optimization device that disturb a kind of many adjacent areas, comprising:
Acquisition module is used for gathering existing network data and drive test data;
The cell edge region acquisition module is used for according to the whole network cell list and geographic information data, obtains cell edge region;
With time-frequency resource quantity acquisition module, be used for for current area, according to the same time-frequency resource quantity of its adjacent area of described existing network data acquisition; The mapping of physical resource that the same time-frequency resource of described adjacent area is the adjacent area and the physical resource of this current residential quarter shine upon the running time-frequency resource of adjacent area when identical;
The received power acquisition module is used for for current area, obtains the received power of its adjacent area according to described drive test data and its cell edge region;
Co-channel interference Weight Acquisition module is used for for current area, according to same time-frequency resource quantity and the received power of its adjacent area, obtains its adjacent area to the co-channel interference weight of this current residential quarter; And
The adjacent area parameter adjustment module is used in the adjacent area co-channel interference weight of this current residential quarter is surpassed corresponding when covering thresholding, and the parameter of this adjacent area is adjusted.
Preferably, network configuration data and the call log data of described existing network packet purse rope unit;
Then describedly comprise with time-frequency resource quantity acquisition module:
The RE mapping position is obtained submodule, is used for the network configuration data according to described network element, obtains the physical resource mapping position of DRS (Dedicated Reference Signal) CRS and the control channel of current area and adjacent area thereof;
Running time-frequency resource position acquisition submodule is used for according to described call log data the running time-frequency resource position that obtains the Traffic Channel of current area and adjacent area thereof;
First obtains submodule with the time-frequency resource quantity, is used for the physical resource mapping position according to CRS and the control channel of current area and adjacent area thereof, obtains the same time-frequency resource quantity of CRS and the control channel of its adjacent area; And
Second obtains submodule with the time-frequency resource quantity, is used for the running time-frequency resource position according to the Traffic Channel of current area and adjacent area thereof, obtains the same time-frequency resource quantity of the Traffic Channel of its adjacent area.
Preferably, described adjacent area parameter adjustment module comprises in the following adjustment submodule one or more at least:
PCI adjusts submodule, is used in the adjacent area co-channel interference weight of this current residential quarter is surpassed corresponding when covering thresholding, adjusts the Physical Cell Identifier of this adjacent area;
Antenna is adjusted submodule, is used in the adjacent area co-channel interference weight of this current residential quarter is surpassed corresponding when covering thresholding, adjusts the antenna parameter of this adjacent area; And
Power is adjusted submodule, is used in the adjacent area co-channel interference weight of this current residential quarter is surpassed corresponding when covering thresholding, adjusts the power of this adjacent area.
Preferably, described adjacent area parameter adjustment module comprises:
The worker singly issues submodule, is used for the parameter adjustment worker singly is issued to existing network, the parameter of this adjacent area is adjusted according to described parameter adjustment worker is single by existing network.
Preferably, described antenna is adjusted submodule, specifically for increasing the Downtilt of this adjacent area, and/or, reduce the antenna height of this adjacent area.
Preferably, described power adjustment submodule comprises:
The signal power adjustment unit is used in the adjacent area CRS co-channel interference weight of this current residential quarter is surpassed corresponding when covering thresholding, reduces the CRS power of this adjacent area;
The control channel power adjustment unit is used in the adjacent area control channel co-channel interference weight of this current residential quarter is surpassed corresponding when covering thresholding, reduces the control channel power of this adjacent area;
The service channel power adjustment unit is used in the adjacent area Traffic Channel co-channel interference weight of this current residential quarter surpassed and covers thresholding accordingly, and coordinating district interference ICIC switch reduces the service channel power of this adjacent area when cutting out.
Preferably, described adjacent area parameter adjustment module comprises:
Adjust and judge submodule, be used for judging whether to exist the co-channel interference weight to this current residential quarter to surpass the corresponding adjacent area that covers thresholding, if, then with corresponding adjacent area as adjacent area to be adjusted, and carry out and add up submodule, the initial mark of described adjacent area to be adjusted is not for adjusting, and current adjustment number of times is 0;
The statistics submodule is used for all adjacent areas to be adjusted of statistics;
Adjust submodule, arbitrary for selecting from the adjacent area to be adjusted of adding up, and according to its co-channel interference weight to this current residential quarter, it is carried out parameter adjustment;
The sign submodule is used for carrying out the adjacent area of parameter adjustment, and its sign is revised as adjusted;
Sign is judged submodule, for the sign according to adjacent area to be adjusted, judges in the adjacent area to be adjusted of adding up whether have adjusted adjacent area, if, then trigger described adjustment and judge submodule, trigger described iteration judgement submodule otherwise hold;
Iteration is judged submodule, is used for judging whether current adjustment number of times has reached iterations, if then trigger described adjustment and judge submodule, otherwise trigger described statistics submodule.
Preferably, described adjacent area parameter adjustment module comprises:
The descending submodule is used for descending is carried out to the co-channel interference weight of this current residential quarter in all adjacent areas; And
Priority parameters is adjusted submodule, is used for preferentially the co-channel interference weight to this current residential quarter that comes the front being surpassed the corresponding parameter that covers the adjacent area of thresholding and adjusts.
Compared with prior art, the present invention has the following advantages:
The present invention is according to the existing network data and the drive test data that gather, obtain the adjacent area to the co-channel interference of cell edge region, and in the adjacent area co-channel interference of cell edge region is surpassed corresponding when covering thresholding, by the parameter adjustment of this adjacent area being realized the optimization of presence of intercell interference.Because the employed existing network data of the embodiment of the invention and drive test data derive from real network, it can reflect that UE takies the dynamic change of the real networks such as dynamic change of resource, like this, the coverage condition of real network can accurately be reflected to the co-channel interference of cell edge region in the adjacent area among the present invention, has good directiveness for the optimization of presence of intercell interference; Further, the adjacent area parameter adjustment that the present invention carries out the co-channel interference of cell edge region according to the adjacent area can be carried out preferably the optimization of presence of intercell interference, thereby can improve the network covering property of residential quarter.
Description of drawings
Fig. 1 is the flow chart of the optimization method embodiment of a kind of many adjacent areas interference of the present invention;
Fig. 2 is the structure chart of the optimization device embodiment of a kind of many adjacent areas interference of the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
With reference to Fig. 1, show the flow chart of the optimization method embodiment that disturbs a kind of many adjacent areas of the present invention, specifically can comprise:
Existing network data of the present invention specifically can comprise network configuration data and the call log data of network element.The network element here can comprise base station, MME(Mobility Management Entity, Mobility Management Entity) etc.; Network configuration data can comprise each eNB(evolved base station in the whole network, evolved Node B), the concrete network configuration parameters of each residential quarter etc.; Call log data specifically can comprise all and call out relevant data, usually by network equipment records such as base stations.
In actual applications, the embodiment of the invention can gather the existing network data automatically by the mode of configuration task.For example, in a kind of application example of the present invention, can set up acquisition tasks.And by control the interface following parameter is set:
The Network element object of optimizing is as specifying the eNB in the existing network;
Optimize time range, can be specific to hour, minute etc.;
The collection period of network configuration data;
The collection period of call log data.
According to the parameter of above-mentioned setting, can periodically gather network configuration data and call log data in the corresponding period.
In the maintenance process in wireless communication networks construction and later stage, need to come by continuous drive test the property indices of Sampling network, specifically can comprise network coverage and communication quality etc., the property indices of these networks all can be used as the part of drive test data.In practice, described drive test data can be collected by road measuring device, and periodically reports NM server.
In specific implementation, the embodiment of the invention can be based on eNB, OMC(operation maintenance center, Operations﹠amp; Maintenance Center), the communication of drive test NM server gathers existing network data and drive test data.
The whole network cell list of the embodiment of the invention can be optimized engineer's foundation and be safeguarded that it specifically can comprise the configuration informations such as residential quarter longitude and latitude, antenna beamwidth, angle of declination, antenna directional angle, antenna height, indoor and outdoor type by the network planning.
The basic data of the geographic information data general reference network planning Optimization Software of the embodiment of the invention specifically can comprise the numerical maps such as digital line map, digital elevation figure, building distribution map.
In specific implementation, the embodiment of the invention can import described the whole network cell list and geographic information data, to obtain cell edge region.
In an embodiment of the present invention, described according to the whole network cell list and geographic information data, obtain the step of cell edge region, specifically can comprise:
Substep S101, based on the GIS(GIS-Geographic Information System, Geographic Information System) own Thiessen polygon function, generate the Thiessen polygon of base station;
The GIS here also is the system that geographic information data relies on.
Substep S102, according to the antenna directional angle in the whole network cell list, draw the angular bisector of the antenna directional angle angle of neighbor cell in the base station, to comprise the convex polygon that the angle line of the angular bisector of the Thiessen polygon of current area and neighbor cell surrounds, be defined as the Thiessen polygon of this current residential quarter, i.e. cell coverage area;
Substep S103, for the cell coverage area that generates, each residential quarter of poll is as the sampled point of main plot, record belongs to the sampled point of marginal point, the zone that marginal point forms is cell edge region.
Cell edge region can be understood as the edge that the residential quarter covers, and at it marginal point that comprises, the signal of current area drops in the adjacent area district coverage, so receive easily the co-channel interference of adjacent area.
The embodiment of the invention can provide such as the down contour point determination methods: the poll grid point, judge whether 8 points around this grid point exist the point that belongs to other residential quarters, and if exist, then this grid point is thought the cell edge point.Be appreciated that the embodiment of the invention is not limited concrete marginal point determination methods.
The LTE system adopts the access way of OFDMA, and OFDMA is divided into a lot of subcarriers with the bandwidth that takies, and user's signal carries at subcarrier, wherein, takies a subcarrier on the frequency, takies the time of an OFDMA symbol on the time, is called a time-frequency lattice point.Because the multiplexing factor of OFDMA is 1, so the shared all time-frequency lattice points of user in residential quarter, different users takies respectively different time-frequency lattice points, is completely orthogonal between user and the user, so the interference between the user in the residential quarter is very little.But, on the basis that the satisfied non-conterminous subcarrier of distributing to a user is spacedly distributed, interference between the user of adjacent co-frequency cell is still larger, the embodiment of the invention adopts the identical frequently district that represents together with the physical resource mapping of this current residential quarter of the physical resource mapping of adjacent area, and obtain the same time-frequency resource of adjacent area, further to obtain the adjacent area to the co-channel interference of cell edge region.
In a preferred embodiment of the present invention, described existing network data specifically can comprise network configuration data and the call log data of network element;
Then described for current area, the step of the same time-frequency resource quantity of its adjacent area of the described existing network data acquisition of foundation specifically can comprise:
Substep S201, according to the network configuration data of described network element, obtain the DRS (Dedicated Reference Signal) CRS(cell special reference of current area and adjacent area thereof, Cell-specific reference signals) and the physical resource mapping position of control channel;
In the embodiment of the invention, control channel specifically can comprise: the PBCH(Physical Broadcast Channel, Physical broadcast channel), PCFICH (Physical Control Format Indicator Channel, Physical Control Format Indicator Channel), the PHICH(Physical HARQ Indicator Channel, Physical Hybrid Indicator Channel) etc.
In practice, include the cell configuration parameter list in the network configuration data of network element, then can obtain according to the cell configuration parameter list residential quarter physical I D(sign of current area and adjacent area, Identity), for convenience of description, current area is assumed to be the A residential quarter; So, can
According to residential quarter physical I D, calculate the physical resource mapping position of the CRS of A residential quarter and adjacent area thereof;
According to residential quarter physical I D, calculate the physical resource mapping position of the PBCH channel of A residential quarter and adjacent area thereof;
According to residential quarter physical I D, calculate the physical resource mapping position of the PCFICH channel of A residential quarter and adjacent area thereof;
According to residential quarter physical I D, calculate the physical resource mapping position of the PHICH channel of A residential quarter and adjacent area thereof.
Substep S202, the described call log data of foundation, the running time-frequency resource position that obtains the Traffic Channel of current area and adjacent area thereof;
In the embodiment of the invention, the running time-frequency resource position of Traffic Channel mainly can comprise downlink traffic channel PRB(Physical Resource Block, Physical Resource Block) shared running time-frequency resource position, described downlink traffic channel mainly can comprise the PDSCH(Physical Downlink Shared Channel, Physical Downlink Shared Channel) channel.
In specific implementation, can add up according to call log data the descending sub frame schedule information of A residential quarter and adjacent area thereof, and further obtain the shared running time-frequency resource position of downlink traffic channel PRB.
Substep S203, according to the physical resource mapping position of CRS and the control channel of current area and adjacent area thereof, obtain the same time-frequency resource quantity of CRS and the control channel of its adjacent area;
Substep S204, according to the running time-frequency resource position of the Traffic Channel of current area and adjacent area thereof, obtain the same time-frequency resource quantity of the Traffic Channel of its adjacent area.
Running time-frequency resource position in CRS, control channel or the Traffic Channel of known current area and adjacent area thereof, the embodiment of the invention can be obtained according to consensus standard the same time-frequency resource quantity of the Traffic Channel of its adjacent area, and the embodiment of the invention is not limited concrete acquisition process.
In actual applications, read drive test data, and screening is positioned at the sampled point of A cell edge region, obtain the RSRP(Reference Signal Received Power of adjacent area, Reference Signal Receiving Power), PCFICH received power, PBCH received power, PHICH received power, PDSCH received power.
The adjacent area to the A residential quarter different channels/signal co-channel interference weight is as follows:
CRS disturbs weight T1=with time-frequency resource RE(example resources, Resource Element) number * RSRP;
PCFICH disturbs weight T2=with time-frequency resource RE number * PCFICH received power;
PBCH disturbs weight T3=with time-frequency resource RE number * PBCH received power;
PHICH disturbs weight T4=with time-frequency resource RE number * PHICH received power;
PDSCH disturbs weight T5=with time-frequency resource RE number * PDSCH received power.
Covering thresholding in the embodiment of the invention can obtain by presetting, wherein different co-channel interference weights can corresponding different covering thresholding, can have different covering thresholdings such as above-mentioned T1, T2, T3, T4, T5, covering thresholding wherein can be preset according to the network environment of reality by those skilled in the art, the present invention then can obtain the covering thresholding that presets based on statistics, and the present invention is not limited concrete covering thresholding and pre-setting method.
In a preferred embodiment of the present invention, describedly in the adjacent area co-channel interference weight of this current residential quarter is surpassed accordingly when covering thresholding, to the step that the parameter of this adjacent area is adjusted, can comprise at least in the following adjustment one or more:
Adjustment 1,
Adjust the PCI(Physical Cell Identifier of this adjacent area, Physical Cell ID);
When the CRS of adjacent area disturbs weight T1＞TH1, can adjust the PCI of this adjacent area.For example, according to agreement 36211-870,6.10 the description of joint is as can be known, the reference signal frequency displacement can be obtained by PCI: shift=PCI mod6, and mod is mod here, so when reality is adjusted, the value that can evade the neighboring interval PCI single port mod6 of current area equates that perhaps, the value that can evade the neighboring interval PCI2 port mod3 of current area equates, because equate to cause easily presence of intercell interference to increase, affect channel estimating and measurement.
Adjustment 2,
Adjust the antenna parameter of this adjacent area;
The step of the antenna parameter of this adjacent area of described adjustment specifically can comprise: increase the Downtilt of this adjacent area, and/or, reduce the antenna height of this adjacent area.
For example, disturb weight T1＞TH1 at the CRS of adjacent area, perhaps, during T2＞TH2, the sector angle of declination of this adjacent area can be increased a step-length, to increase the angle of declination angle, a step-length here is generally 1 degree;
And for example, the T2＞TH2 in the adjacent area perhaps, during T3＞TH3, can reduce by a step-length with the sector height of this adjacent area, with the downward modulation antenna height.
Adjustment 3,
Adjust the power of this adjacent area.
In practice, in the adjacent area co-channel interference weight of this current residential quarter is surpassed accordingly when covering thresholding, channel or the signal power of this adjacent area can be reduced by a step-length, to reach the purpose of lower adjusting power.
In a preferred embodiment of the present invention, the step of the power of this adjacent area of described adjustment specifically can comprise:
Substep S301, in the adjacent area CRS co-channel interference weight of this current residential quarter is surpassed accordingly when covering thresholding, reduce the CRS power of this adjacent area;
Substep S302, in the adjacent area control channel co-channel interference weight of this current residential quarter is surpassed accordingly when covering thresholding, reduce the control channel power of this adjacent area;
Particularly, if the PCFICH of adjacent area disturbs weight〉PCFICH covers thresholding, then can reduce the PCFICH power of this adjacent area; If the PBCH of adjacent area disturbs weight〉PBCH covers thresholding, then can reduce the PBCH power of this adjacent area; If the PHICH of adjacent area disturbs weight〉PHICH covers thresholding, then can reduce the PHICH power of this adjacent area, etc.
Substep S303, in the adjacent area Traffic Channel co-channel interference weight of this current residential quarter is surpassed the corresponding thresholding that covers, and coordinating district interference ICIC(coordinating district interference, Inter-Cell Interference Coordination) when switch cuts out, reduces the service channel power of this adjacent area.
Need to prove, when the ICIC switch opens, owing to the ICIC function works, thus can not adjust the service channel power of this adjacent area, such as PDSCH power.
In addition, need to prove that in the process that power is adjusted, the desired value of power can not surpass the residential quarter maximum transmission power.
Moreover, consider the TD-LTE network characteristic, the channels such as PBCH, PHICH are had relatively high expectations to signal strength signal intensity, so when carrying out the power adjustment, it is minimum that the power of the channels such as PBCH, PHICH is adjusted priority, perhaps, do not participate in optimizing and revising; In the embodiment of the invention, adjust the degree of priority that priority is used for being illustrated in the parameter adjustment process, in the parameter adjustment process, adjust high adjacent area or the channel of priority and preferentially adjusted.
In a preferred embodiment of the present invention, describedly in the adjacent area co-channel interference weight of this current residential quarter is surpassed accordingly when covering thresholding, the step to the parameter of this adjacent area is adjusted specifically can comprise:
Substep S401, the parameter adjustment worker singly is issued to existing network, the parameter of this adjacent area is adjusted according to described parameter adjustment worker is single by existing network.The existing network here can comprise base station etc.
In the embodiment of the invention, the parameter adjustment of step 106 can be a continuous process, also namely can be constantly according to the existing network data and the drive test data that gather, obtain the adjacent area to the co-channel interference of cell edge region, and in the adjacent area co-channel interference of cell edge region is surpassed corresponding when covering thresholding, by the parameter adjustment of this adjacent area being realized the optimization of presence of intercell interference.
And the embodiment of the invention can also continue to monitor the adjusted adjacent area to the co-channel interference of cell edge region, with assessment adjusted adjacent area whether the co-channel interference of current area is caused by parameter configuration is unreasonable.For example, if the adjusted adjacent area has alleviated the co-channel interference of current area, illustrate that then parameter adjustment played effect, co-channel interference causes by parameter configuration is unreasonable; If the adjusted adjacent area does not alleviate the co-channel interference of current area, illustrate that then parameter adjustment do not play due effect, co-channel interference does not cause by parameter configuration is unreasonable, then can send the prompting of adopting other optimization means to network optimization engineer.In a word, the present invention is according to the existing network data and the drive test data that gather, and obtain the adjacent area and can play the supervisory function bit that covers preferably index to the co-channel interference of cell edge region, and, have preferably directive significance for the optimization of presence of intercell interference.
In addition, current area has a plurality of adjacent areas usually, and the part or all of co-channel interference weight to current area in these a plurality of adjacent areas all might surpass the corresponding thresholding that covers, so may need the parameter of a plurality of adjacent areas is adjusted; And, the co-channel interference weight of adjusted adjacent area still might surpass the corresponding thresholding that covers, so parameter adjustment of the present invention may be a long-term process, in a preferred embodiment of the present invention, in order to prevent that parameter adjustment is absorbed in endless loop, the parameter adjustment process of an iteration can be set;
Particularly, describedly in the adjacent area co-channel interference weight of this current residential quarter is surpassed accordingly when covering thresholding, the step to the parameter of this adjacent area is adjusted specifically can comprise:
Adjust determining step S401: judge whether to exist the co-channel interference weight to this current residential quarter to surpass the corresponding adjacent area that covers thresholding, if, then with corresponding adjacent area as adjacent area to be adjusted, and execution statistic procedure S402, the initial mark of described adjacent area to be adjusted is not for adjusting, current adjustment number of times is 0;
Statistic procedure S402: add up all adjacent areas to be adjusted;
Set-up procedure S403: from the adjacent area to be adjusted of adding up, select arbitraryly, and according to its co-channel interference weight to this current residential quarter, it is carried out parameter adjustment;
Sign step S404: to carrying out the adjacent area of parameter adjustment, its sign is revised as adjusted;
Sign determining step S405: according to the sign of adjacent area to be adjusted, judge in the adjacent area to be adjusted of adding up whether have adjusted adjacent area, if then return to carry out and adjust determining step S401, otherwise carry out iteration determining step S406;
Iteration determining step S406; Judge whether current adjustment number of times has reached iterations, if, then return to carry out and adjust determining step S401, carry out statistic procedure S402 otherwise return.
The iterations here can arrange flexibly according to actual conditions, and the embodiment of the invention is not limited concrete iterations.
The front is mentioned, and the embodiment of the invention can adopt adjusts the degree of priority that priority list is shown in the parameter adjustment process, in the parameter adjustment process, adjusts high adjacent area or the channel of priority and is preferentially adjusted.
So in a preferred embodiment of the present invention, can determine according to the adjacent area adjustment priority of adjacent area to the co-channel interference weight of this current residential quarter, with the high adjacent area of preferential adjustment priority, correspondingly, described in the adjacent area co-channel interference weight of this current residential quarter is surpassed corresponding when covering thresholding, step to the parameter of this adjacent area is adjusted specifically can comprise:
Step S501, descending is carried out to the co-channel interference weight of this current residential quarter in all adjacent areas;
Step S502, preferentially the co-channel interference weight to this current residential quarter that comes the front is surpassed the corresponding parameter that covers the adjacent area of thresholding and adjust.
The embodiment of the invention has following advantage:
At first, the embodiment of the invention can realize in special network optimization instrument, also can obtain the result according to long-term statistics, and the parameter adjustment of this moment will be played better optimization function to presence of intercell interference, and described optimization can improve the covering performance of network;
Secondly, the present invention is automatic flow, need not manual intervention, comprising: automatically gather and import related data (existing network data, drive test data, the whole network cell data and geographic information data etc.), parameter of adjacent area etc. is adjusted automatically to the co-channel interference of current area in the automatic acquisition adjacent area;
Moreover the present invention has preferably directive significance to the optimization of presence of intercell interference; For example, the present invention can continue to monitor the adjusted adjacent area to the co-channel interference of cell edge region, with assessment adjusted adjacent area whether the co-channel interference of current area is caused by parameter configuration is unreasonable.For example, if co-channel interference causes by parameter configuration is unreasonable, then parameter adjustment can be played and optimize preferably operation; If co-channel interference does not cause by parameter configuration is unreasonable, then can send the prompting of adopting other optimization means to network optimization engineer; In a word, the present invention is according to the existing network data and the drive test data that gather, and obtain the adjacent area and can play the supervisory function bit that covers preferably index to the co-channel interference of cell edge region, and, have preferably directive significance for the optimization of presence of intercell interference;
Further, it is high that the present invention analyzes the efficient of finding the wireless parameter allocation problem, has preferably specific aim and accuracy for antenna parameter optimization, PCI parameter optimization, power parameter optimization etc.;
In a word, full automatic prioritization scheme of the present invention can be saved the test analysis manpower, promotes network optimization efficient, reduces the network optimization cost, and can improve intellectuality, the automaticity of the network optimization.
With reference to Fig. 2, show the structure chart of the optimization device embodiment that disturbs a kind of many adjacent areas of the present invention, specifically can comprise:
Cell edge region acquisition module 202 is used for according to the whole network cell list and geographic information data, obtains cell edge region;
With time-frequency resource quantity acquisition module 203, be used for for current area, according to the same time-frequency resource quantity of its adjacent area of described existing network data acquisition; The mapping of physical resource that the same time-frequency resource of described adjacent area is the adjacent area and the physical resource of this current residential quarter shine upon the running time-frequency resource of adjacent area when identical;
Received power acquisition module 204 is used for for current area, obtains the received power of its adjacent area according to described drive test data and its cell edge region;
Co-channel interference Weight Acquisition module 205 is used for for current area, according to same time-frequency resource quantity and the received power of its adjacent area, obtains its adjacent area to the co-channel interference weight of this current residential quarter; And
Adjacent area parameter adjustment module 206 is used in the adjacent area co-channel interference weight of this current residential quarter is surpassed corresponding when covering thresholding, and the parameter of this adjacent area is adjusted.
In a preferred embodiment of the present invention, described existing network data specifically can comprise network configuration data and the call log data of network element;
Then describedly specifically can comprise with time-frequency resource quantity acquisition module 203:
The RE mapping position is obtained submodule, is used for the network configuration data according to described network element, obtains the physical resource mapping position of DRS (Dedicated Reference Signal) CRS and the control channel of current area and adjacent area thereof;
Running time-frequency resource position acquisition submodule is used for according to described call log data the running time-frequency resource position that obtains the Traffic Channel of current area and adjacent area thereof;
First obtains submodule with the time-frequency resource quantity, is used for the physical resource mapping position according to CRS and the control channel of current area and adjacent area thereof, obtains the same time-frequency resource quantity of CRS and the control channel of its adjacent area; And
Second obtains submodule with the time-frequency resource quantity, is used for the running time-frequency resource position according to the Traffic Channel of current area and adjacent area thereof, obtains the same time-frequency resource quantity of the Traffic Channel of its adjacent area.
In another kind of preferred embodiment of the present invention, described adjacent area parameter adjustment module 206 can comprise in the following adjustment submodule one or more at least:
PCI adjusts submodule, is used in the adjacent area co-channel interference weight of this current residential quarter is surpassed corresponding when covering thresholding, adjusts the Physical Cell Identifier of this adjacent area;
Antenna is adjusted submodule, is used in the adjacent area co-channel interference weight of this current residential quarter is surpassed corresponding when covering thresholding, adjusts the antenna parameter of this adjacent area; And
Power is adjusted submodule, is used in the adjacent area co-channel interference weight of this current residential quarter is surpassed corresponding when covering thresholding, adjusts the power of this adjacent area.
In another preferred embodiment of the present invention, described adjacent area parameter adjustment module 206 specifically can comprise:
The worker singly issues submodule, is used for the parameter adjustment worker singly is issued to existing network, the parameter of this adjacent area is adjusted according to described parameter adjustment worker is single by existing network.
In a preferred embodiment of the present invention, described antenna is adjusted submodule, can be specifically for increasing the Downtilt of this adjacent area, and/or, reduce the antenna height of this adjacent area.
In another kind of preferred embodiment of the present invention, described power is adjusted submodule and specifically can be comprised:
The signal power adjustment unit is used in the adjacent area CRS co-channel interference weight of this current residential quarter is surpassed corresponding when covering thresholding, reduces the CRS power of this adjacent area;
The control channel power adjustment unit is used in the adjacent area control channel co-channel interference weight of this current residential quarter is surpassed corresponding when covering thresholding, reduces the control channel power of this adjacent area;
The service channel power adjustment unit is used in the adjacent area Traffic Channel co-channel interference weight of this current residential quarter surpassed and covers thresholding accordingly, and coordinating district interference ICIC switch reduces the service channel power of this adjacent area when cutting out.
In another preferred embodiment of the present invention, described adjacent area parameter adjustment module 206 specifically can comprise:
Adjust and judge submodule, be used for judging whether to exist the co-channel interference weight to this current residential quarter to surpass the corresponding adjacent area that covers thresholding, if, then with corresponding adjacent area as adjacent area to be adjusted, and carry out and add up submodule, the initial mark of described adjacent area to be adjusted is not for adjusting, and current adjustment number of times is 0;
The statistics submodule is used for all adjacent areas to be adjusted of statistics;
Adjust submodule, arbitrary for selecting from the adjacent area to be adjusted of adding up, and according to its co-channel interference weight to this current residential quarter, it is carried out parameter adjustment;
The sign submodule is used for carrying out the adjacent area of parameter adjustment, and its sign is revised as adjusted;
Sign is judged submodule, for the sign according to adjacent area to be adjusted, judges in the adjacent area to be adjusted of adding up whether have adjusted adjacent area, if, then trigger described adjustment and judge submodule, trigger described iteration judgement submodule otherwise hold;
Iteration is judged submodule, is used for judging whether current adjustment number of times has reached iterations, if then trigger described adjustment and judge submodule, otherwise trigger described statistics submodule.
In a preferred embodiment of the present invention, described adjacent area parameter adjustment module 206 specifically can comprise:
The descending submodule is used for descending is carried out to the co-channel interference weight of this current residential quarter in all adjacent areas; And
Priority parameters is adjusted submodule, is used for preferentially the co-channel interference weight to this current residential quarter that comes the front being surpassed the corresponding parameter that covers the adjacent area of thresholding and adjusts.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.For device embodiment because itself and embodiment of the method basic simlarity, so describe fairly simple, relevant part gets final product referring to the part explanation of embodiment of the method.
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, complete implement software example or in conjunction with the form of the embodiment of software and hardware aspect.And the present invention can adopt the form of the computer program of implementing in one or more computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is that reference is described according to flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device producing a machine, so that the instruction of carrying out by the processor of computer or other programmable data processing device produces the device of the function that is used for being implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, so that the instruction that is stored in this computer-readable memory produces the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device, so that carry out the sequence of operations step producing computer implemented processing at computer or other programmable devices, thereby be provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame in the instruction that computer or other programmable devices are carried out.
Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic creative concept of cicada, then can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
More than optimization method and device that a kind of many adjacent areas provided by the present invention are disturbed, be described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (16)
1. the optimization method of the interference of adjacent area more than a kind is characterized in that, comprising:
Gather existing network data and drive test data;
According to the whole network cell list and geographic information data, obtain cell edge region;
For current area, according to the same time-frequency resource quantity of its adjacent area of described existing network data acquisition; The mapping of physical resource that the same time-frequency resource of described adjacent area is the adjacent area and the physical resource of this current residential quarter shine upon the running time-frequency resource of adjacent area when identical;
For current area, obtain the received power of its adjacent area according to described drive test data and its cell edge region;
For current area, according to same time-frequency resource quantity and the received power of its adjacent area, obtain its adjacent area to the co-channel interference weight of this current residential quarter;
In the adjacent area co-channel interference weight of this current residential quarter is surpassed accordingly when covering thresholding, the parameter of this adjacent area is adjusted.
2. the method for claim 1 is characterized in that, network configuration data and the call log data of described existing network packet purse rope unit;
Then described for current area, the step of the same time-frequency resource quantity of its adjacent area of the described existing network data acquisition of foundation comprises:
According to the network configuration data of described network element, obtain the physical resource mapping position of DRS (Dedicated Reference Signal) CRS and the control channel of current area and adjacent area thereof;
According to described call log data, the running time-frequency resource position that obtains the Traffic Channel of current area and adjacent area thereof;
According to the physical resource mapping position of CRS and the control channel of current area and adjacent area thereof, obtain the same time-frequency resource quantity of CRS and the control channel of its adjacent area;
According to the running time-frequency resource position of the Traffic Channel of current area and adjacent area thereof, obtain the same time-frequency resource quantity of the Traffic Channel of its adjacent area.
3. method as claimed in claim 1 or 2 is characterized in that, describedly in the adjacent area co-channel interference weight of this current residential quarter is surpassed accordingly when covering thresholding, to the step that the parameter of this adjacent area is adjusted, comprises at least in the following adjustment one or more:
Adjust the Physical Cell Identifier of this adjacent area, adjust the antenna parameter of this adjacent area, reach, adjust the power of this adjacent area.
4. such as claim 1 or 3 described methods, it is characterized in that describedly in the adjacent area co-channel interference weight of this current residential quarter is surpassed accordingly when covering thresholding, the step to the parameter of this adjacent area is adjusted comprises:
The parameter adjustment worker singly is issued to existing network, the parameter of this adjacent area is adjusted according to described parameter adjustment worker is single by existing network.
5. method as claimed in claim 3 is characterized in that, the step of the antenna parameter of this adjacent area of described adjustment comprises: increase the Downtilt of this adjacent area, and/or, reduce the antenna height of this adjacent area.
6. method as claimed in claim 3 is characterized in that, the step of the power of this adjacent area of described adjustment comprises:
In the adjacent area CRS co-channel interference weight of this current residential quarter is surpassed accordingly when covering thresholding, reduce the CRS power of this adjacent area;
In the adjacent area control channel co-channel interference weight of this current residential quarter is surpassed accordingly when covering thresholding, reduce the control channel power of this adjacent area;
In the adjacent area Traffic Channel co-channel interference weight of this current residential quarter surpassed and to cover thresholding accordingly, and coordinating district interference ICIC switch reduces the service channel power of this adjacent area when cutting out.
7. such as claim 1 or 3 described methods, it is characterized in that describedly in the adjacent area co-channel interference weight of this current residential quarter is surpassed accordingly when covering thresholding, the step to the parameter of this adjacent area is adjusted comprises:
Adjust determining step: judge whether to exist the co-channel interference weight to this current residential quarter to surpass the corresponding adjacent area that covers thresholding, if, then with corresponding adjacent area as adjacent area to be adjusted, and execution statistic procedure, the initial mark of described adjacent area to be adjusted is not for adjusting, and current adjustment number of times is 0;
Statistic procedure: add up all adjacent areas to be adjusted;
Set-up procedure: from the adjacent area to be adjusted of adding up, select arbitraryly, and according to its co-channel interference weight to this current residential quarter, it is carried out parameter adjustment;
Sign step: to carrying out the adjacent area of parameter adjustment, its sign is revised as adjusted;
Sign determining step: according to the sign of adjacent area to be adjusted, judge in the adjacent area to be adjusted of adding up whether have adjusted adjacent area, if then return to carry out and adjust determining step, otherwise carry out the iteration determining step;
The iteration determining step; Judge whether current adjustment number of times has reached iterations, if then return to carry out and adjust determining step, otherwise return the execution statistic procedure.
8. such as claim 1 or 3 described methods, it is characterized in that describedly in the adjacent area co-channel interference weight of this current residential quarter is surpassed accordingly when covering thresholding, the step to the parameter of this adjacent area is adjusted comprises:
Descending is carried out to the co-channel interference weight of this current residential quarter in all adjacent areas;
Preferentially the co-channel interference weight to this current residential quarter that comes the front being surpassed the corresponding parameter that covers the adjacent area of thresholding adjusts.
9. the optimization device of the interference of adjacent area more than a kind is characterized in that, comprising:
Acquisition module is used for gathering existing network data and drive test data;
The cell edge region acquisition module is used for according to the whole network cell list and geographic information data, obtains cell edge region;
With time-frequency resource quantity acquisition module, be used for for current area, according to the same time-frequency resource quantity of its adjacent area of described existing network data acquisition; The mapping of physical resource that the same time-frequency resource of described adjacent area is the adjacent area and the physical resource of this current residential quarter shine upon the running time-frequency resource of adjacent area when identical;
The received power acquisition module is used for for current area, obtains the received power of its adjacent area according to described drive test data and its cell edge region;
Co-channel interference Weight Acquisition module is used for for current area, according to same time-frequency resource quantity and the received power of its adjacent area, obtains its adjacent area to the co-channel interference weight of this current residential quarter; And
The adjacent area parameter adjustment module is used in the adjacent area co-channel interference weight of this current residential quarter is surpassed corresponding when covering thresholding, and the parameter of this adjacent area is adjusted.
10. device as claimed in claim 9 is characterized in that, network configuration data and the call log data of described existing network packet purse rope unit;
Then describedly comprise with time-frequency resource quantity acquisition module:
The RE mapping position is obtained submodule, is used for the network configuration data according to described network element, obtains the physical resource mapping position of DRS (Dedicated Reference Signal) CRS and the control channel of current area and adjacent area thereof;
Running time-frequency resource position acquisition submodule is used for according to described call log data the running time-frequency resource position that obtains the Traffic Channel of current area and adjacent area thereof;
First obtains submodule with the time-frequency resource quantity, is used for the physical resource mapping position according to CRS and the control channel of current area and adjacent area thereof, obtains the same time-frequency resource quantity of CRS and the control channel of its adjacent area; And
Second obtains submodule with the time-frequency resource quantity, is used for the running time-frequency resource position according to the Traffic Channel of current area and adjacent area thereof, obtains the same time-frequency resource quantity of the Traffic Channel of its adjacent area.
11., it is characterized in that described adjacent area parameter adjustment module comprises in the following adjustment submodule one or more at least such as claim 9 or 10 described devices:
PCI adjusts submodule, is used in the adjacent area co-channel interference weight of this current residential quarter is surpassed corresponding when covering thresholding, adjusts the Physical Cell Identifier of this adjacent area;
Antenna is adjusted submodule, is used in the adjacent area co-channel interference weight of this current residential quarter is surpassed corresponding when covering thresholding, adjusts the antenna parameter of this adjacent area; And
Power is adjusted submodule, is used in the adjacent area co-channel interference weight of this current residential quarter is surpassed corresponding when covering thresholding, adjusts the power of this adjacent area.
12., it is characterized in that described adjacent area parameter adjustment module comprises such as claim 9 or 11 described devices:
The worker singly issues submodule, is used for the parameter adjustment worker singly is issued to existing network, the parameter of this adjacent area is adjusted according to described parameter adjustment worker is single by existing network.
13. device as claimed in claim 11 is characterized in that, described antenna is adjusted submodule, specifically for increasing the Downtilt of this adjacent area, and/or, reduce the antenna height of this adjacent area.
14. device as claimed in claim 11 is characterized in that, described power is adjusted submodule and is comprised:
The signal power adjustment unit is used in the adjacent area CRS co-channel interference weight of this current residential quarter is surpassed corresponding when covering thresholding, reduces the CRS power of this adjacent area;
The control channel power adjustment unit is used in the adjacent area control channel co-channel interference weight of this current residential quarter is surpassed corresponding when covering thresholding, reduces the control channel power of this adjacent area;
The service channel power adjustment unit is used in the adjacent area Traffic Channel co-channel interference weight of this current residential quarter surpassed and covers thresholding accordingly, and coordinating district interference ICIC switch reduces the service channel power of this adjacent area when cutting out.
15., it is characterized in that described adjacent area parameter adjustment module comprises such as claim 9 or 11 described devices:
Adjust and judge submodule, be used for judging whether to exist the co-channel interference weight to this current residential quarter to surpass the corresponding adjacent area that covers thresholding, if, then with corresponding adjacent area as adjacent area to be adjusted, and carry out and add up submodule, the initial mark of described adjacent area to be adjusted is not for adjusting, and current adjustment number of times is 0;
The statistics submodule is used for all adjacent areas to be adjusted of statistics;
Adjust submodule, arbitrary for selecting from the adjacent area to be adjusted of adding up, and according to its co-channel interference weight to this current residential quarter, it is carried out parameter adjustment;
The sign submodule is used for carrying out the adjacent area of parameter adjustment, and its sign is revised as adjusted;
Sign is judged submodule, for the sign according to adjacent area to be adjusted, judges in the adjacent area to be adjusted of adding up whether have adjusted adjacent area, if, then trigger described adjustment and judge submodule, trigger described iteration judgement submodule otherwise hold;
Iteration is judged submodule, is used for judging whether current adjustment number of times has reached iterations, if then trigger described adjustment and judge submodule, otherwise trigger described statistics submodule.
16., it is characterized in that described adjacent area parameter adjustment module comprises such as claim 9 or 11 described devices:
The descending submodule is used for descending is carried out to the co-channel interference weight of this current residential quarter in all adjacent areas; And
Priority parameters is adjusted submodule, is used for preferentially the co-channel interference weight to this current residential quarter that comes the front being surpassed the corresponding parameter that covers the adjacent area of thresholding and adjusts.
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