CN101494895B - Method and system for coordinating interference between districts - Google Patents
Method and system for coordinating interference between districts Download PDFInfo
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- CN101494895B CN101494895B CN2008100566127A CN200810056612A CN101494895B CN 101494895 B CN101494895 B CN 101494895B CN 2008100566127 A CN2008100566127 A CN 2008100566127A CN 200810056612 A CN200810056612 A CN 200810056612A CN 101494895 B CN101494895 B CN 101494895B
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Abstract
The invention discloses an inter-cell interference coordination method, which comprises the following steps: step 1, the base station sets a first threshold for dividing the internal layer area and the transition area, and a second threshold for dividing the transition area and the external layer area, and sets the link loss compensation factor and time frequency resource of every divided area; step 2, the user terminal of the cell measures the intensity of the most intensive interference signal, and reports the measuring result to the base station; step 3, the base station determines the area including the user terminal according to the measuring result, determining the link loss compensation factor of the user terminal according to the area including the user terminal, calculating the user terminal emission power, and sending the calculating result to the user terminal; step 4, the user terminal receives the calculating result, and emits according to the calculating result. The method in the invention can coordinate inter-cell interference, and increase cell edge user terminal throughput and user terminal average throughput.
Description
Technical field
The present invention relates to field of wireless communications networks, relate in particular to a kind of method and system of Inter-Cell Interference Coordination.
Background technology
In follow-on broadband wireless communication network, presence of intercell interference becomes a key factor that improves inter-cell user terminal throughput and average user terminal throughput in the solution cordless communication network, and is faced with formidable challenges.
At present, in IEEE 802.16j, IMT-Advanced (senior international mobile communication) and WINNER (Wireless World Initiative New Radio, the wireless world plan is newly wireless), propose to adopt interference randomization, interference coordination, interference elimination method to solve the problem of presence of intercell interference.LTE (Long TermEvolution, the strong jamming level of all neighbor cells that the user terminal of giving chapter and verse Long Term Evolution) receives, cell coverage area is divided into internal layer area and outer zone, and adopts the method for control of part power and path loss compensation to solve presence of intercell interference.Wherein, internal layer area is the zone that does not have presence of intercell interference, uses the total power compensation; The zone of outer zone for having presence of intercell interference, the method for power control of employing part and path loss compensation solves the problem of presence of intercell interference.
Employing is divided into internal layer area and outer zone with the sub-district, and the method in that delamination area is carried out control of part power and path loss compensation when cordless communication network is slight load or intermediate part load, can guarantee the employed running time-frequency resource quadrature of each neighbor cell.But, when cordless communication network is the severe load, then be difficult to guarantee employed running time-frequency resource quadrature between all neighbor cells by scheduling, produce presence of intercell interference.Though can make the complete quadrature of running time-frequency resource collision probability the best part that uses in the neighbor cell by the sensitizing range is set, but, reduced the flexibility of scheduling, and when control of part power and path loss compensation, the availability of frequency spectrum is descended, caused the throughput of Cell Edge User terminal and user terminal average throughput to descend.
Summary of the invention
In order to address the above problem, the invention provides a kind of method and system of Inter-Cell Interference Coordination, its purpose is, make the base station can on frequency domain, dispatch the employed running time-frequency resource of user terminal, it is not used by the user terminal in the neighbor cell, control the up-link transmission power of different layers simultaneously, coordinate presence of intercell interference; When cordless communication network is the severe load, improve the running time-frequency resource utilance, reduce presence of intercell interference; Under the prerequisite that interference meets the demands, improve transmitting power, improve Cell Edge User terminal throughput and user terminal average throughput.
The invention discloses a kind of method of Inter-Cell Interference Coordination, the base station coverage cell is divided into internal layer area, transitional region and outer zone, comprise the steps:
The running time-frequency resource quadrature that the running time-frequency resource that described transitional region is provided with is provided with described internal layer area and outer zone.
Described method also comprises step 5, when described internal layer area and/or outer regional running time-frequency resource are not enough, dispatches the running time-frequency resource that described transitional region is used in the not enough zone of described running time-frequency resource.
Described first threshold is less than second threshold value.
Described step 3 comprises that further the high reject signal intensity of more described user terminal is with the size of described first threshold and described second threshold value.
If the high reject signal intensity of described user terminal is less than described first threshold, then described user terminal belongs to described internal layer area;
If the high reject signal intensity of described user terminal is more than or equal to described first threshold and smaller or equal to described second threshold value, then described user terminal belongs to described transitional region;
If the high reject signal intensity of described user terminal is greater than described second threshold value, then described user terminal belongs to described outer zone.
The road loss compensation factor of each zoning and the Cheng Qian of crossing of running time-frequency resource are set in the described step 1 comprise that also be provided for dividing the threshold value of described transitional region, described threshold value is greater than first threshold and less than second threshold value;
Described step 3 also comprises, the high reject signal intensity of more described user terminal is with the size of the threshold value of described division transitional region, determines the zoning of the transitional region under the described user terminal.
The road loss compensation factor in described zone is single value, centrifugal pump, successive value, single value with the set with successive value of the set of successive value or centrifugal pump.
The road loss compensation factor process of determining described user terminal in the described step 3 further comprises, judges whether the type of the road loss compensation factor of user terminal affiliated area is single value;
If then the road loss compensation factor of described user terminal is described single value;
Otherwise, judge in the road loss compensation factor of described user terminal affiliated area whether comprise successive value, if comprise, step value is set then, by described step value described successive value is converted to centrifugal pump;
Press descending selective sequential centrifugal pump as road loss compensation factor, whether the high reject signal intensity of judging the user terminal of described sub-district exceeds requirement, if do not exceed, then the road loss compensation factor of described user terminal is selected centrifugal pump, otherwise, the road loss compensation factor of selecting described user terminal is next centrifugal pump, carry out described by descending selective sequential centrifugal pump as the judgement after the road loss compensation factor.
Described step 2 further comprises, the user terminal setting of described sub-district reports threshold value and measuring period, at described user terminal measurement after interference signal intensity, judge whether described interference signal intensity exceeds the described threshold value that reports, if exceed then measurement result reported described base station, otherwise, give described base station with high reject signal strength reporting by described measuring period.
The invention discloses a kind of system of Inter-Cell Interference Coordination, comprise base station and user terminal, it is characterized in that,
Described base station, be used to be provided with the first threshold of dividing internal layer area and transitional region, divide second threshold value in transitional region and outer zone, the road loss compensation factor of each zoning and running time-frequency resource, by the high reject signal intensity of described user terminal measurement, receive the high reject signal intensity measurements of described user terminal to send up, determine zone under the described user terminal according to described measurement result, determine described user's road loss compensation factor according to described user terminal affiliated area, calculate the transmitting power of described user terminal, and described result of calculation is sent to described user terminal;
Described user terminal is used to measure high reject signal intensity, and measurement result is reported described base station, calculates transmitting power by described base station, and receives the result of calculation of described base station, launches by described result of calculation.
The running time-frequency resource quadrature that the running time-frequency resource that described transitional region is used uses with described internal layer area and outer zone.
Described base station also is used for, and when described internal layer area and/or outer regional running time-frequency resource are not enough, dispatches the running time-frequency resource that described transitional region is used in the not enough zone of described running time-frequency resource.
Described base station is further used for, and the high reject signal intensity of more described user terminal is with the size of described first threshold and described second threshold value.
If the high reject signal intensity of described user terminal is less than described first threshold, then described user terminal belongs to described internal layer area;
If the high reject signal intensity of described user terminal is more than or equal to described first threshold and smaller or equal to described second threshold value, then described user terminal belongs to described transitional region;
If the high reject signal intensity of described user terminal is greater than described second threshold value, then described user terminal belongs to described outer zone.
Beneficial effect of the present invention is, by layering to base station coverage area in the cordless communication network, make the base station can on frequency domain, dispatch the employed running time-frequency resource of user terminal, it is not used by the user terminal in the neighbor cell, control the up-link transmission power of different layers simultaneously, coordinate presence of intercell interference; By dividing transitional region, make the scheduling of running time-frequency resource more flexible, when wireless communication network load increases, help keeping the quadrature of running time-frequency resource, divide threshold value by adjustment region simultaneously, the loading condition of zones of different in the allotting network reaches running time-frequency resource and makes full use of; By a plurality of road loss compensation factors are set in different layerings, cooperate transition region to use simultaneously, further refinement cell coverage area is under the prerequisite that interference meets the demands, improve transmitting power, to improve Cell Edge User terminal throughput and user terminal average throughput.
Description of drawings
Fig. 1 is the system construction drawing of one embodiment of the present of invention;
Fig. 2 a is the Hierarchical Cell Structure schematic diagram;
Fig. 2 b is the structural representation to the transitional region layering;
When Fig. 3 a is slight load, minizone of the present invention different layering time-frequency resource allocating schematic diagram;
When Fig. 3 b is intermediate part load, minizone of the present invention different layering time-frequency resource allocating schematic diagram;
When Fig. 3 c is full load, minizone of the present invention different layering time-frequency resource allocating schematic diagram;
When Fig. 3 d is overburden, minizone of the present invention different layering time-frequency resource allocating schematic diagram;
Fig. 4 is an embodiment flow chart of inter-cell interference coordination method of the present invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
One embodiment of the present of invention comprise base station 101 and user terminal 102, as shown in Figure 1.
The running time-frequency resource quadrature that the running time-frequency resource that described transitional region 2 is used uses with described internal layer area 1 and outer zone 3, base station 101 also is used for, when running time-frequency resource is not enough because load is overweight in internal layer area 1 and/or outer zone 3, dispatch the running time-frequency resource that described transitional region 2 is used in the not enough zone of described running time-frequency resource.
The road loss compensation factor that base station 101 is provided with can for single value, centrifugal pump, successive value, single value with the set of the set of successive value or centrifugal pump with successive value.
Shown in Fig. 2 a, base station 101 coverage cell are divided into internal layer area 1, transitional region 2 and outer zone 3.Base station 101 is provided with the first threshold of dividing internal layer area 1 and transitional region 2 and divides transitional region 2 and second threshold value in outer zone 3; The high reject signal intensity of the user terminal measurement of described sub-district, and measurement result reported described base station 101; The high reject signal intensity measurements that base station 101 receives that user terminals 102 report, relatively the high reject signal intensity of user terminal 102 is with the size of described first threshold and described second threshold value, determines the zoning under the user terminal 102.
The high reject signal intensity setting that the user terminal 102 that the first threshold and second threshold value have obtained according to base station 101 reports, first threshold is less than second threshold value.
If the high reject signal intensity of described user terminal 102 is less than described first threshold, then described user terminal 102 belongs to internal layer area 1, thinks that the minizone interference strength is enough low in the internal layer area 1, can ignore presence of intercell interference.
If the high reject signal intensity of user terminal 102 is greater than described second threshold value, then user terminal 102 belongs to outer zone 3, outer zone 3 is the high zones of presence of intercell interference probability, the processing of presence of intercell interference must be carried out, otherwise the throughput and the average user terminal throughput of Cell Edge User terminal can be influenced.
If the high reject signal intensity of user terminal 102 is more than or equal to described first threshold and smaller or equal to described second threshold value, then described user terminal 102 belongs to transitional region 2, transitional region 2 is between internal layer area 1 and outer zone 3, and high reject signal intensity is in the acceptable scope.Main effect has:
Shown in Fig. 2 b, base station 101 is provided with the 3rd threshold value for transitional region 2, and transitional region 2 is divided into internal layer transition region 21 and outer transition region 22.For the user terminal 102 that belongs to transitional region 2, base station 101 relatively the high reject signal intensity of user terminals 102 with the size of described the 3rd threshold value, if the high reject signal intensity of user terminal 102 is more than or equal to described first threshold and less than described the 3rd threshold value, then user terminal 102 belongs to internal layer transitional region 21; If the high reject signal intensity of user terminal 102 is more than or equal to described the 3rd threshold value and smaller or equal to described second threshold value, then user terminal 102 belongs to outer transitional region 22.
For above-mentioned zones of different adjustment, undertaken by changing the threshold value that is provided with.
The road loss compensation factor of zones of different can be set to single value, centrifugal pump and successive value, single value with the set with successive value of the set of successive value or centrifugal pump in Fig. 2 a and Fig. 2 b.Usually internal layer area 1 is set to single value, and transitional region 2 is set to set, and wherein, set comprises single value, centrifugal pump, successive value, and outer zone 3 is set to single value or centrifugal pump.A specific embodiment of road loss compensation factor is set, and it is single value that base station 101 is provided with internal layer area 1 road loss compensation factor; Outer regional 3 road loss compensation factors are single value; The road loss compensation factor of transitional region 2 is the set of a road loss compensation factor, and the set of road loss compensation factor can comprise dissimilar road loss compensation factors simultaneously.Another specific embodiment of road loss compensation factor is set, and the road loss compensation factor that base station 101 is provided with internal layer area 1 is a single value; The road loss compensation factor in outer zone 3 is a centrifugal pump, comprises two different road loss compensation factor values; The road loss compensation factor of transitional region 2 is a road loss compensation factor set.
Usually, the road loss compensation factor that transition region 2 is set is set, is convenient to carry out equilibrium between the complexity of the validity of Inter-Cell Interference Coordination and power adjustment.
Fig. 3 a, Fig. 3 b, Fig. 3 c and Fig. 3 d are under the different loads situation, minizone of the present invention different layering time-frequency resource allocating schematic diagram, three neighbor cells are arranged among the embodiment, each sub-district is divided into internal layer area 1, transitional region 2 and outer zone 3, wherein RU (Resource Unit, Resource Unit) 1～18 is mutually orthogonal.
When Fig. 3 a is slight load, minizone of the present invention different layering time-frequency resource allocating schematic diagram, wherein, in sub-district 301, RU1 and RU2 distribute to outer zone 3, and RU13, RU15 and RU16 distribute to transitional region 2, and internal layer area 1 is distributed in RU7～9; In sub-district 302, RU7, RU8, RU11 and RU12 distribute to outer zone 3, and RU13, RU14 and RU18 distribute to transitional region 2, and RU1, RU3 and RU4 distribute to internal layer area 1; In sub-district 303, RU13 and RU14 distribute to outer zone 3, and RU7, RU9 and RU11 distribute to transitional region 2, and RU2 distributes to internal layer area 1.The outer zone 3 used running time-frequency resources of three neighbor cells are mutually orthogonal, thereby reduce interference among adjacent cells.
When Fig. 3 b is intermediate part load, minizone of the present invention different layering time-frequency resource allocating schematic diagram, wherein, in sub-district 301, RU1, RU2, RU5 and RU6 distribute to outer zone 3, and transitional region 2 is distributed in RU13 and RU15～18, and internal layer area 1 is distributed in RU7～9 and RU11～12; In sub-district 302, outer zone 3 is distributed in RU7～8 and RU10～12, and RU13, RU14, RU16 and RU18 distribute to transitional region 2, and RU1, RU3, RU4 and RU6 distribute to internal layer area 1; In sub-district 303, RU13～15, RU17 and RU18 distribute to outer zone 3, and transitional region 2 is distributed in RU7, RU9～11, and RU2, RU3, RU5 and RU6 distribute to internal layer area 1.Identical during with slight load, the outer zone 3 used running time-frequency resources of three neighbor cells are mutually orthogonal, thereby reduce interference among adjacent cells.
When Fig. 3 c is full load, minizone of the present invention different layering time-frequency resource allocating schematic diagram, wherein, in sub-district 301, outer zone 3 is distributed in RU1～6, and transitional region 2 is distributed in RU13～18, and internal layer area 1 is distributed in RU7～12; In sub-district 302, outer zone 3 is distributed in RU7～12, and transitional region 2 is distributed in RU13～18, and internal layer area 1 is distributed in RU1～6; In sub-district 303, outer zone 3 is distributed in RU13～18, and transitional region 2 is distributed in RU7～12, and internal layer area 1 is distributed in RU1～6.At full load, RU all is assigned with, and still, the outer zone 3 used running time-frequency resources of three neighbor cells are still mutually orthogonal, thereby reduce interference among adjacent cells.
When Fig. 3 d is overburden, minizone of the present invention different layering time-frequency resource allocating schematic diagram, wherein, in sub-district 301, RU1～6 and RU15 distribute to outer zone 3, and transitional region 2 is distributed in RU13～14 and RU16～18, and internal layer area 1 is distributed in RU7～12; In sub-district 302, RU7～12, RU15 and RU17 distribute to outer zone 3, and RU13～14, RU16 and RU18 distribute to transitional region 2, and internal layer area 1 is distributed in RU1～6; In sub-district 303, outer zone 3 is distributed in RU11～18, and transitional region 2 is distributed in RU7～10, and internal layer area 1 is distributed in RU1～6.When overburden, outer regional 3 running time-frequency resource deficiencies take transitional region 2 running time-frequency resources, because the running time-frequency resource quadrature in transitional region 2 and outer zone 3, thereby after outer zone 3 takies the running time-frequency resource of transitional region 2, can guarantee that still used running time-frequency resources are mutually orthogonal in the outer zone 3.
The embodiment flow process of inter-cell interference coordination method of the present invention as shown in Figure 4.
Step S401, base station 101 is provided for the threshold value of zoning.
The interference signal intensity of using strong jamming sub-district is provided with the threshold value of zoning.When the internal layer area 1 of base station 101 coverage cell and/or outer regional 3 running time-frequency resources were not enough, scheduling transitional region 2 was carried out running time-frequency resource and is replenished.Embodiment is, adjust threshold value, make certain customers' terminal in the not enough zone of running time-frequency resource be divided into transitional region 2, make the user terminal of described part use the running time-frequency resource of transitional region 2, thereby the running time-frequency resource in the not enough zone of running time-frequency resource is replenished by transitional region 2.
Step S402, base station 101 is provided with the road loss compensation factor of each zoning.
Road loss compensation factor can for single value, centrifugal pump, successive value, single value with the set of the set of successive value or centrifugal pump with successive value.
When 101 cell range that cover surpassed a certain size in the base station, for further refinement, the road loss compensation factor of each zoning can adopt dissimilar.
Because the presence of intercell interference of internal layer area 1 is enough little usually, can ignore, therefore, the road loss compensation factor of internal layer area 1 is set to 1, carries out system-wide and decreases compensation.For outer zone 3, can be set to single value or centrifugal pump, the complexity that the validity of common balanced Inter-Cell Interference Coordination is adjusted with power is provided with.The road loss compensation factor of transitional region 2 is that a road loss compensation factor can be single value, centrifugal pump, successive value, and single value is with the set of successive value, or centrifugal pump is with the set of successive value.When transitional region 2 was divided into internal layer transitional region 21 and outer transitional region 22 by further refinement, internal layer transitional region 21 and outer transitional region 22 had road loss compensation factor separately respectively, and two road loss compensation factors can be identical or different.Being provided with of road loss compensation factor can be the set of single value, centrifugal pump, successive value, single value and successive value or the set of centrifugal pump and successive value in the transitional region 2.
Step S403, base station 101 is provided with the running time-frequency resource of each zoning.
When base station 101 is provided with the running time-frequency resource of each zoning, under the situation of running time-frequency resource abundance, keep user terminal running time-frequency resource quadrature in the sub-district, under the situation of running time-frequency resource deficiency, guarantee that at first the used running time-frequency resource of outer regional 3 the user terminal in sub-district is mutually orthogonal, guarantee the used accurate quadrature of running time-frequency resource of user terminal of transitional region 2 then.When interior zone 1 can be ignored by the interference of neighbor cell, the used running time-frequency resource of the user terminal of interior zone 1 can have overlapping.
In addition, because transitional region 2 will be carried out running time-frequency resource and replenish, therefore when internal layer area 1 and/or outer regional 3 running time-frequency resources be not enough, guarantee when being provided with that transitional region 2 has the quadrature running time-frequency resource with outer zone 3 and 1 of internal layer area, when additional, to use.
The running time-frequency resource quadrature of perimeter 3 has dual mode:
Mode one, the outer regional 3 running time-frequency resource position quadratures between neighbor cell, similar and different road loss compensation factor can be used in the outer zone 3 of neighbor cell, keeps complete quadrature.
Mode two, the outer regional 3 part running time-frequency resource location overlaps between adjacent region use different road loss compensation factors, keep accurate quadrature.
In mode one, when the sub-district is slight load or intermediate part load, there are enough running time-frequency resources to allocate, can guarantee the quadrature of running time-frequency resource fully.
In mode two, when the sub-district is full load or overburden, do not have enough running time-frequency resources to distribute and guarantee outer regional 3 the complete quadrature of running time-frequency resource between neighbor cell, at this moment, by using different road loss compensation factors between neighbor cell, to adjust the transmitting power of different districts edge customer terminal, disturb thereby reduce the Cell Edge User terminal.Make in the outer zone 3 high reject signal intensity keep quadrature simultaneously greater than the used running time-frequency resource of a certain size user terminal, overlap and be not more than described a certain size the used running time-frequency resource of user terminal for the user terminal in the transitional region 2 and high reject signal intensity, keep accurate quadrature, thereby reach the purpose of interference coordination.
Step S404, user terminal 102 measure high reject signal intensity.
Step S405, user terminal 102 reports base station 101 with measurement result.
Step S406: the zoning under the user terminal 102 is determined in base station 101.
Relatively the high reject signal intensity of user terminal 102 is with the size of described first threshold and described second threshold value, if the high reject signal intensity of described user terminal 102 less than described first threshold, then user terminal 102 belongs to internal layer area 1; If the high reject signal intensity of user terminal 102 is more than or equal to described first threshold and smaller or equal to described second threshold value, then user terminal 102 belongs to transitional region 2; If the high reject signal intensity of user terminal 102 is greater than described second threshold value, then user terminal 102 belongs to outer zone 3.
101 when further being provided with the 3rd threshold value in the base station, relatively the high reject signal intensity of user terminal 102 is with the size of described the 3rd threshold value, if the high reject signal intensity of user terminal 102 is more than or equal to described first threshold and less than described the 3rd threshold value, then user terminal 102 belongs to internal layer transitional region 21; If the high reject signal intensity of user terminal 102 is more than or equal to described the 3rd threshold value and smaller or equal to described second threshold value, then user terminal 102 belongs to outer transitional region 22.
Step S407, the road loss compensation factor of user terminal 102 is determined in base station 101.
Judge the type of the road loss compensation factor of user terminal 102 affiliated areas,
If described type is a single value, then described user's road loss compensation factor is described single value;
Judge in the road loss compensation factor of user terminal 102 affiliated areas and whether comprise successive value, if comprise successive value step-length is set, by described step-length successive value is converted to centrifugal pump, specific implementation method is, the centrifugal pump of conversion is the integral multiple that maximum and maximum deduct step value in the successive value, and the numerical value in the centrifugal pump after the conversion is not less than minimum value in the successive value; If do not comprise successive value, then need not carry out described transfer process, directly carry out selection course,
Described selection course is for pressing descending selective sequential road loss compensation factor, whether the high reject signal intensity of judging the user terminal of described sub-district exceeds the threshold value of zoning under this user terminal, for example, to when the community user terminal judges of internal layer area 1, whether the high reject signal intensity of judging user terminal exceeds first threshold, if the high reject signal intensity of the user terminal of described sub-district does not exceed the threshold value of zoning under this user terminal, then the road loss compensation factor of user terminal 102 is a selective value, otherwise, the road loss compensation factor of selecting user terminal 102 is next value, proceeds described judgement.
Step S408, the transmitting power of user terminal 102 is calculated in base station 101 according to the part Poewr control method.
Adjusted transmitting power is calculated according to the road loss compensation factor of user terminal 102, the running time-frequency resource of distribution and the maximum transmit power information of user terminal 102 in base station 101.
Step S409, base station 101 is notified to user terminal 102 by uplink grant with calculating the transmitting power of adjusting the back.
The handshake procedure that transmitting power is adjusted is finished by uplink grant and user terminal 102 in base station 101.
Step S410, the transmitting power of adjusting after the calculating of user terminal 102 according to base station 101 notices is launched.
The above is a preferred embodiment of the present invention, not in order to qualification the present invention, and any those skilled in the art, without departing from the spirit and scope of the present invention, the modification of being done is all within the scope of the present invention.
Claims (10)
1. the method for an Inter-Cell Interference Coordination is characterized in that, the base station coverage cell is divided into internal layer area, transitional region and outer zone, comprises the steps:
Step 1, described base station are provided with the first threshold of dividing described internal layer area and transitional region, second threshold value of dividing transitional region and outer zone, and the road loss compensation factor and the running time-frequency resource of each zoning is set;
Step 2, the high reject signal intensity of the user terminal measurement of described sub-district, and measurement result reported described base station;
Step 3, zone under the described user terminal is determined according to described measurement result in described base station, determine the road loss compensation factor of described user terminal according to described user terminal affiliated area, calculate the transmitting power of described user terminal, and described result of calculation is sent to described user terminal;
Step 4, described user terminal receives described result of calculation, and launches by described result of calculation.
2. the method for Inter-Cell Interference Coordination as claimed in claim 1 is characterized in that, the running time-frequency resource quadrature that the running time-frequency resource that described transitional region is provided with is provided with described internal layer area and outer zone,
Described method also comprises step 5, when described internal layer area and/or outer regional running time-frequency resource are not enough, dispatches the running time-frequency resource that described transitional region is used in the not enough zone of described running time-frequency resource.
3. the method for Inter-Cell Interference Coordination as claimed in claim 2 is characterized in that, described first threshold is less than second threshold value,
Described step 3 further comprises, the high reject signal intensity of more described user terminal is with the size of described first threshold and described second threshold value,
If the high reject signal intensity of described user terminal is less than described first threshold, then described user terminal belongs to described internal layer area;
If the high reject signal intensity of described user terminal is more than or equal to described first threshold and smaller or equal to described second threshold value, then described user terminal belongs to described transitional region;
If the high reject signal intensity of described user terminal is greater than described second threshold value, then described user terminal belongs to described outer zone.
4. the method for Inter-Cell Interference Coordination as claimed in claim 3 is characterized in that,
The road loss compensation factor of each zoning and the Cheng Qian of crossing of running time-frequency resource are set in the described step 1 comprise that also be provided for dividing the threshold value of described transitional region, described threshold value is greater than first threshold and less than second threshold value;
Described step 3 also comprises, the high reject signal intensity of more described user terminal is with the size of the threshold value of described division transitional region, determines the zoning of the transitional region under the described user terminal.
5. the method for Inter-Cell Interference Coordination as claimed in claim 4 is characterized in that, the road loss compensation factor in described zone is single value, centrifugal pump, successive value, single value with the set with successive value of the set of successive value or centrifugal pump.
6. the method for Inter-Cell Interference Coordination as claimed in claim 5, it is characterized in that, the road loss compensation factor process of determining described user terminal in the described step 3 further comprises, judges whether the type of the road loss compensation factor of user terminal affiliated area is single value
If then the road loss compensation factor of described user terminal is described single value;
Otherwise, judge in the road loss compensation factor of described user terminal affiliated area whether comprise successive value, if comprise, step value is set then, by described step value described successive value is converted to centrifugal pump;
Press descending selective sequential centrifugal pump as road loss compensation factor, whether the high reject signal intensity of judging the user terminal of described sub-district exceeds requirement, if do not exceed, then the road loss compensation factor of described user terminal is selected centrifugal pump, otherwise, the road loss compensation factor of selecting described user terminal is next centrifugal pump, carry out described by descending selective sequential centrifugal pump as the judgement after the road loss compensation factor.
7. as the method for the described Inter-Cell Interference Coordination of arbitrary claim in the claim 1 to 6, it is characterized in that, described step 2 further comprises, the user terminal setting of described sub-district reports threshold value and measuring period, after interference signal intensity, judge whether described interference signal intensity exceeds the described threshold value that reports at described user terminal measurement, if exceed then measurement result is reported described base station, otherwise, give described base station with high reject signal strength reporting by described measuring period.
8. the system of an Inter-Cell Interference Coordination comprises base station and user terminal, it is characterized in that,
Described base station, be used to be provided with the first threshold of dividing internal layer area and transitional region, divide second threshold value in transitional region and outer zone, the road loss compensation factor of each zoning and running time-frequency resource, by the high reject signal intensity of described user terminal measurement, receive the high reject signal intensity measurements of described user terminal to send up, determine zone under the described user terminal according to described measurement result, determine described user's road loss compensation factor according to described user terminal affiliated area, calculate the transmitting power of described user terminal, and described result of calculation is sent to described user terminal;
Described user terminal is used to measure high reject signal intensity, and measurement result is reported described base station, calculates transmitting power by described base station, and receives the result of calculation of described base station, launches by described result of calculation.
9. the system of Inter-Cell Interference Coordination as claimed in claim 8 is characterized in that, the running time-frequency resource quadrature that the running time-frequency resource that described transitional region is used uses with described internal layer area and outer zone,
Described base station also is used for, and when described internal layer area and/or outer regional running time-frequency resource are not enough, dispatches the running time-frequency resource that described transitional region is used in the not enough zone of described running time-frequency resource.
10. the system of Inter-Cell Interference Coordination as claimed in claim 9 is characterized in that,
Described base station is further used for, and the high reject signal intensity of more described user terminal is with the size of described first threshold and described second threshold value,
If the high reject signal intensity of described user terminal is less than described first threshold, then described user terminal belongs to described internal layer area;
If the high reject signal intensity of described user terminal is more than or equal to described first threshold and smaller or equal to described second threshold value, then described user terminal belongs to described transitional region;
If the high reject signal intensity of described user terminal is greater than described second threshold value, then described user terminal belongs to described outer zone.
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| CN2008100566127A CN101494895B (en) | 2008-01-22 | 2008-01-22 | Method and system for coordinating interference between districts |
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| CN101431758B (en) * | 2008-12-09 | 2011-04-06 | 华为技术有限公司 | Method and apparatus for predicting user position distribution |
| CN102045758B (en) * | 2009-10-20 | 2013-08-28 | 华为技术有限公司 | Method, base station and system for determining inter-cell interference coordination (ICIC) |
| CN102111718B (en) * | 2009-12-28 | 2014-12-17 | 深圳市齐创美科技有限公司 | System and method for electronic information distribution |
| CN101835162B (en) * | 2010-01-12 | 2013-06-05 | 工业和信息化部电信传输研究所 | Networking scheduling method and device in application process of different time slot proportions in different cells |
| WO2011130914A1 (en) * | 2010-04-23 | 2011-10-27 | Huawei Technologies Co., Ltd. | Method for controlling inter-cell interference in cellular communication arrangement |
| CN102281648A (en) * | 2010-06-10 | 2011-12-14 | 中兴通讯股份有限公司 | Method and base station for controlling inter-cell inference avoiding |
| CN102573082B (en) * | 2010-12-20 | 2017-02-15 | 上海贝尔股份有限公司 | Method and equipment for inter-adjacent cell interference coordination in wireless communication system |
| CN102811478B (en) | 2011-05-31 | 2016-03-30 | 华为技术有限公司 | A kind of path loss compensation method and base station and subscriber equipment |
| CN102811458B (en) * | 2011-06-01 | 2017-04-12 | 中兴通讯股份有限公司 | Inter-cell interference coordination method and base station |
| WO2013056394A1 (en) * | 2011-10-19 | 2013-04-25 | Telefonaktiebolaget L M Ericsson (Publ) | Determination of ue location in a cell |
| CN103138883B (en) * | 2011-12-01 | 2018-05-11 | ***通信集团公司 | A kind of mthods, systems and devices for avoiding family wireless equipment by mistake to code |
| CN103686748B (en) * | 2012-09-26 | 2017-05-31 | 普天信息技术研究院有限公司 | A kind of method that edge customer is divided in downlink |
| CN103874184B (en) * | 2012-12-14 | 2017-06-20 | ***通信集团公司 | Path loss compensating factor sending method, path loss compensation method and equipment |
| CN104185264B (en) | 2013-05-23 | 2017-12-15 | 华为技术有限公司 | The method and apparatus of uplink power control |
| CN110855416A (en) * | 2014-04-30 | 2020-02-28 | Oppo广东移动通信有限公司 | Method for device-to-device communication, user equipment, network node and storage medium |
| CN109874177B (en) * | 2019-04-01 | 2023-02-10 | 海能达通信股份有限公司 | Inter-cell interference coordination method, device and server |
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