WO2016086669A1 - Procédé et appareil de détermination de relation de cellule - Google Patents

Procédé et appareil de détermination de relation de cellule Download PDF

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Publication number
WO2016086669A1
WO2016086669A1 PCT/CN2015/084273 CN2015084273W WO2016086669A1 WO 2016086669 A1 WO2016086669 A1 WO 2016086669A1 CN 2015084273 W CN2015084273 W CN 2015084273W WO 2016086669 A1 WO2016086669 A1 WO 2016086669A1
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Prior art keywords
cell
target cell
target
neighboring
relationship
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PCT/CN2015/084273
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English (en)
Chinese (zh)
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李小龙
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华为技术有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/18—Network planning tools
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and apparatus for determining a cell relationship.
  • the allocation of code resources is planned with the cell relationship as a reference.
  • the interference in the communication network is large. If the same code resource is allocated to a relatively distant cell, the interference in the communication network is relatively small. Therefore, in order to make the allocation of code resources more reasonable, it is necessary to determine a relatively accurate cell relationship before the code resource allocation.
  • each cell to be calculated is obtained based on the network topology information. Specifically, each cell to be calculated is obtained according to the plane distance represented by the network topology information and the preset threshold distance. And determining a distance factor and a network topology factor between the target cell and the cell to be calculated according to the network topology information, and determining a cell relationship value between the target cell and the cell to be calculated.
  • determining the cell to be calculated according to the plane distance in the network topology information is inaccurate, because in practice, the cell with a relatively close plane distance may be far away in the actual physical distance, for example, two cells are in the network topology.
  • the planes characterized in the information are very close in distance, but the base station of one cell is on the ground and the base station of another cell is on a high-rise building. The actual physical distance between the two cells may also be relatively far.
  • Embodiments of the present invention provide a method and apparatus for determining a cell relationship, which are capable of calculating a cell relationship between a target cell and a target cell based on a spatial distance between the cells. Each neighboring area gets a more accurate cell relationship.
  • the embodiment of the present invention provides a method for determining a cell relationship, which includes: acquiring a layer neighboring cell of a target cell, where a neighboring cell of the target cell is a spatial distance from the target cell. a cell that is smaller than the first preset value, where the spatial distance is used to indicate a location relationship between two cells; and a first cell relationship value between the target cell and a layer of a neighboring cell of the target cell is determined.
  • the first cell relationship value is used to indicate a cell relationship between the target cell and a neighboring cell of the target cell.
  • the method further includes: acquiring a second-layer neighboring cell of the target cell, where The second-layer neighboring cell of the target cell is a cell whose spatial distance from the neighboring cell of the target cell is less than a second preset value; and between the target cell and the second-layer neighboring cell of the target cell is determined. a second cell relationship value, where the second cell relationship value is used to indicate a cell relationship between the target cell and a second-layer neighboring cell of the target cell.
  • the neighboring cell list is pre-configured in the target cell, and the method further includes: acquiring, before acquiring a neighboring cell of the target cell a configuration parameter of the target cell, where the configuration parameter of the target cell includes at least a geographic coordinate of the target cell and an antenna height of a base station to which the target cell belongs; and acquiring configuration parameters of the first cell, where the a cell is any one of the neighboring cell lists, or any one of the cells whose plane distance from the target cell is within a preset range, and the configuration parameter of the first cell includes at least the first cell And the geographic coordinates of the base station to which the first cell belongs; the geographic coordinates of the target cell, the antenna height of the base station to which the target cell belongs, the geographic coordinates of the first cell, and the base station to which the first cell belongs An antenna height, calculating a physical distance between the target cell and the first cell; acquiring between the target cell and the first cell Cover Factor; based on the
  • the acquiring a coverage impact factor between the target cell and the first cell includes: If the coverage of the target cell and the coverage of the first cell do not overlap, set a coverage impact factor between the target cell and the first cell as a fourth preset value; if the target cell The coverage of the first cell overlaps with the coverage of the first cell, and the coverage impact factor between the target cell and the first cell is set to a ratio of the first area to the second area, where the first area The area of the coverage area of the target cell and the coverage area of the first cell, where the second area is the area of the total coverage of the target cell and the first cell.
  • the determining a first cell relationship value between the target cell and a neighboring cell of the target cell includes: acquiring the first a cell coefficient and a power interference coefficient of the second cell, and a same-frequency interference quantization value and an interference weight between the target cell and the second cell, where the second cell is a neighboring cell of the target cell
  • the cell coefficient is determined by a station type of the second cell
  • the same-frequency interference quantization value is used to indicate an interference size when two cells communicate using the same frequency
  • the interference weight Determining, by the cell coefficient, the power interference coefficient, and the same-frequency interference quantization value, a first cell relationship value between the second cell and the target cell.
  • the acquiring the interference weight between the target cell and the second cell includes: And the target cell and the second cell are the same-station cell, and the interference weight between the target cell and the second cell is set to a third preset value; or, if the target cell and the target cell And acquiring, by the second cell, a neighboring cell interference coefficient and a handover interference coefficient between the target cell and the second cell; and calculating, according to the neighboring cell interference coefficient and the handover interference coefficient, The interference weight between the target cell and the second cell.
  • the determining a second cell relationship value between the target cell and a second-layer neighboring cell of the target cell includes: acquiring co-channel interference between the third cell and the target cell a quantized value and a path number of the third cell, where the third cell is any one of the second-layer neighboring cells of the target cell, and the number of the path is the third cell in the target cell The number of occurrences in the second-layer neighboring cell; calculating a second cell relationship value between the target cell and the third cell according to the same-frequency interference quantized value and the number of paths.
  • the method further includes: if the fourth cell is a layer neighbor of the target cell a third cell neighbor relationship between the fourth cell and the target cell, where the third cell relationship value is a sum of a first cell relationship value between the fourth cell and the target cell and a second cell relationship value between the fourth cell and the target cell.
  • an embodiment of the present invention provides an apparatus for determining a relationship of a cell, including: a first acquiring module, configured to acquire a neighboring area of a target cell, where a neighboring area of the target cell is a cell with a spatial distance between the target cells that is smaller than the first preset value, where the spatial distance is used to indicate a location relationship between the two cells, and the first determining module is configured to determine the target cell and the target a first cell relationship value between a neighboring cell of the cell, where the first cell relationship value is used to indicate a cell relationship between the target cell and a neighboring cell of the target cell.
  • the device further includes: a second acquiring module, configured to acquire a second-layer neighbor of the target cell after acquiring a neighboring cell of the target cell An area, where the second-layer neighboring cell of the target cell is a cell whose spatial distance from a neighboring cell of the target cell is smaller than a second preset value, and a second determining module is configured to determine the target cell a second cell relationship value between the second-layer neighboring cell of the target cell, where the second cell relationship value is used to indicate the mesh The cell relationship between the target cell and the second-layer neighboring cell of the target cell.
  • a second acquiring module configured to acquire a second-layer neighbor of the target cell after acquiring a neighboring cell of the target cell An area, where the second-layer neighboring cell of the target cell is a cell whose spatial distance from a neighboring cell of the target cell is smaller than a second preset value
  • a second determining module is configured to determine the target cell a second cell relationship value between the second-layer neighboring cell of the target cell,
  • the first acquiring module is further configured to acquire configuration parameters of the target cell before acquiring a neighboring cell of the target cell, where
  • the configuration parameter of the target cell includes at least the geographic coordinates of the target cell and the antenna height of the base station to which the target cell belongs, and the neighboring cell list is pre-set in the target cell;
  • the first acquiring module is further used for Acquiring the configuration parameter of the first cell, where the first cell is any one of the neighboring cell lists, or any cell with a plane distance from the target cell within a preset range,
  • the configuration parameter of the first cell includes at least the geographic coordinates of the first cell and the antenna height of the base station to which the first cell belongs.
  • the device further includes: a first calculating module, configured to: according to a geographic coordinate of the target cell, an antenna height of a base station to which the target cell belongs, a geographic coordinate of the first cell, and an antenna of a base station to which the first cell belongs a height, a physical distance between the target cell and the first cell, a third acquiring module, configured to acquire a coverage impact factor between the target cell and the first cell, where the first computing module is And calculating, by using a physical distance and a coverage impact factor between the target cell and the first cell, a spatial distance between the target cell and the first cell.
  • a first calculating module configured to: according to a geographic coordinate of the target cell, an antenna height of a base station to which the target cell belongs, a geographic coordinate of the first cell, and an antenna of a base station to which the first cell belongs a height, a physical distance between the target cell and the first cell
  • a third acquiring module configured to acquire a coverage impact factor between the target cell and the first cell, where the first computing
  • the third acquiring module is specifically configured to: if a coverage area of the target cell and the first If the coverage of the cell does not overlap, the coverage impact factor between the target cell and the first cell is set to a fourth preset value; if the coverage of the target cell overlaps with the coverage of the first cell And setting a coverage impact factor between the target cell and the first cell as a ratio of a first area to a second area, where the first area is a coverage area of the target cell and the first area The area of the overlapping range of coverage of the cell, the second area being the area of the total coverage of the target cell and the first cell.
  • the first determining module includes: a first acquiring submodule, configured to acquire a cell coefficient and a power interference coefficient of the second cell, and Between the target cell and the second cell The same frequency interference quantization value and the interference weight, wherein the second cell is any one of a neighboring cell of the target cell, and the cell coefficient is determined by a station type of the second cell, The same-frequency interference quantization value is used to indicate the interference size of the two cells when using the same frequency communication; the first calculation sub-module is configured to use, according to the interference weight, the cell coefficient, the power interference coefficient, and the same frequency Interference quantization value, calculating a first cell relationship value between the second cell and the target cell.
  • the first acquiring sub-module is specifically configured to: if the target cell and the second cell And the interference weight between the target cell and the second cell is set to a third preset value; or, if the target cell and the second cell are non-same cells, Obtaining a neighboring interference coefficient and a handover interference coefficient between the target cell and the second cell; calculating, between the target cell and the second cell, according to the neighboring interference coefficient and the handover interference coefficient The interference weight.
  • the second determining module includes: a second acquiring submodule, configured to acquire a third cell a same-frequency interference quantized value between the target cell and the number of paths of the third cell, where the third cell is any one of the second-layer neighboring cells of the target cell, and the number of the paths And a second calculation sub-module, configured to calculate the target cell and the location according to the same-frequency interference quantization value and the number of paths A second cell relationship value between the third cells.
  • the device further includes:
  • a second calculating module configured to determine a first cell relationship value between the target cell and a neighboring cell of the target cell, and determine the target cell and a second-layer neighboring cell of the target cell After the second cell relationship value, if the fourth cell is a layer neighboring cell of the target cell, and the fourth cell is a second-layer neighboring cell of the target cell, calculating the fourth cell and the a third cell relationship value between the target cells, where the third cell relationship value is the first small between the fourth cell and the target cell a zone relationship value and a sum of second cell relationship values between the fourth cell and the target cell.
  • An embodiment of the present invention provides a method and a device for determining a cell relationship, where a neighboring cell of a target cell is obtained, where a neighboring cell of the target cell is a cell whose spatial distance from the target cell is less than a first preset value. And determining a first cell relationship value between the target cell and a layer neighboring cell of the target cell, where the first cell relationship value is used to indicate a cell relationship between the target cell and a layer neighboring cell of the target cell.
  • the present invention obtains all cells in a certain range around the target cell and the target cell, and all cells in the preset neighbor cell list in the target cell, and calculates preset rules around the target cell and the target cell. All the cells in the cell, or the spatial distance between the target cell and all cells in the preset neighbor cell list in the target cell, so that a neighboring cell of the target cell can be determined based on the spatial distance, and a cell with a relatively close spatial distance can be selected. As a neighboring cell of the target cell, the cell relationship value between the target cell and the neighboring cell of the target cell is calculated, and the prior art determines the cell relationship value between the cells only by the plane distance in the network topology information.
  • the technical solution of the present invention passes the cell in a certain range around the target cell and the target cell. In the cell in the neighbor list, it is determined according to the spatial distance that the calculation needs to be performed with the target cell. The relationship between the value of the cells in the cell will be more realistic, to be more accurate cell relations.
  • FIG. 1 is a schematic flowchart 1 of a method for determining a cell relationship according to an embodiment of the present disclosure
  • FIG. 2 is a schematic flowchart of a method for determining a cell relationship according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart 3 of a method for determining a cell relationship according to an embodiment of the present disclosure
  • FIG. 4 is a horizontal cross-sectional view of a cell coverage range according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart 4 of a method for determining a cell relationship according to an embodiment of the present disclosure
  • FIG. 6 is a schematic flowchart 5 of a method for determining a cell relationship according to an embodiment of the present disclosure
  • FIG. 7 is a schematic structural diagram 1 of an apparatus for determining a cell relationship according to an embodiment of the present disclosure
  • FIG. 8 is a schematic structural diagram 2 of an apparatus for determining a cell relationship according to an embodiment of the present invention.
  • FIG. 1 is a schematic flowchart of the method, including:
  • the neighboring area of the target cell is a cell whose spatial distance from the target cell is smaller than the first preset value, and the spatial distance is used to indicate the positional relationship between the two cells.
  • the location relationship between the two cells includes a distance relationship between the two cells and a direction relationship between the antennas of the base stations to which the two cells belong.
  • the target cell is first determined, and then a certain range is set according to the actual situation. exemplarily, all cells within a range of several tens of kilometers around the target cell are acquired, with the target cell as the center, where the target cell Which neighboring areas in the tens of kilometers around can refer to which cells in the network topology information are within a few tens of kilometers from the plane distance of the target cell, and also need to acquire all the cells in the neighboring cell list of the target cell, and the target All the cells adjacent to the target cell and all the cells that may interact with the target cell are recorded in the neighboring cell list of the cell; in the foregoing cell, the cell that needs to calculate the cell relationship with the target cell is filtered, specifically, In the technical solution of the present invention, it is determined that the cell between the target cell and the target cell needs to be calculated according to the size of the spatial distance between all the cells in the range of several tens of kilometers around the target cell and the neighbor cell list of the target cell and the target cell.
  • a neighboring cell of the target cell refers to a cell whose spatial distance from the target cell is smaller than the first preset value.
  • the cell in a certain range around the target cell and the target cell may be determined first.
  • the cells in the neighbor list select their union as the cell for calculating the spatial distance from the target cell, and then select the cells whose spatial distance from the target cell is smaller than the first preset value among the cells.
  • the antenna height of the cell needs to be considered, wherein the antenna height of the cell refers to the antenna height of the base station to which the cell belongs, and the base station to which the cell belongs
  • the antenna height includes the height of the ground at the base station, the height of the building, and the height of the antenna.
  • the plane distance between the cells in the technical solution of the present invention refers to the plane distance calculated from the network topology information of the cell, and the spatial distance between the cells is the physical distance between the cells and the cell.
  • the directionality information of the antenna of the associated base station is obtained, and the physical distance between the cells is obtained according to the geographical coordinates of the cell and the antenna height of the base station to which the cell belongs.
  • a neighboring area of the target cell is smaller than the target
  • the spatial distance between the zones is smaller than the cell of the first preset value. It can be understood that the spatial distance can truly reflect the actual distance between the cells, instead of selecting a suitable cell from the plane distance in the network topology information to calculate the cell relationship as in the prior art.
  • the neighboring area of the target cell is a cell whose spatial distance from the target cell is smaller than the first preset value
  • the first preset value may be a distance value determined according to the actual situation, that is, the target cell
  • a cell with a spatial distance less than the preset distance is used as a neighboring cell of the target cell.
  • the preset is preset.
  • the value may also be a spatial distance between the cell after the selected first N cells and the target cell after the spatial distance between each cell and the target cell is sorted in order from small to large.
  • S102 Determine a first cell relationship value between the target cell and a neighboring cell of the target cell.
  • the first cell relationship value is used to indicate a cell relationship between the target cell and a neighboring cell of the target cell.
  • the greater the value of the first cell relationship between the target cell and the neighboring cell of the target cell the closer the relationship between the target cell and the neighboring cell of the target cell is.
  • An embodiment of the present invention provides a method for determining a cell relationship, which includes: acquiring a layer neighboring cell of a target cell, where a neighboring cell of the target cell is a cell with a spatial distance smaller than a first preset value from the target cell. And determining a first cell relationship value between the target cell and a layer neighboring cell of the target cell, where the first cell relationship value is used to indicate a cell relationship between the target cell and a layer neighboring cell of the target cell.
  • the present invention acquires a target cell and a target cell All cells in a certain range and all cells in the preset neighboring cell list in the target cell, and calculate all cells in the preset rule around the target cell and the target cell, or preset neighbors in the target cell and the target cell.
  • the technical solution of the present invention determines the need for calculation and target according to the spatial distance by using a cell in a certain range around the target cell and a cell in the neighboring cell list of the target cell.
  • the cell with the cell relationship value between cells will be more in line with the actual situation and get more accurate. Community relations.
  • FIG. 2 is a schematic flowchart of the method, including:
  • the configuration parameter of the target cell includes at least a geographic coordinate of the target cell and an antenna height of the base station to which the target cell belongs.
  • the geographical coordinates of the target cell are converted into latitude and longitude in the parameters of the network engineering at the time of construction into geographical coordinates (x1, y1).
  • the antenna height of the base station to which the target cell belongs includes a feature height, a building height, and an antenna hanging height.
  • the first cell is any one of the neighboring cell list of the target cell, or any cell that has a plane distance from the target cell within a preset range, and the configuration parameter of the first cell includes at least the first cell.
  • all cells in a certain range around the target cell may be acquired centered on the target cell.
  • the range may be set by the user.
  • a part of the cell may be obtained, and then all cells in the neighbor cell list of the target cell are acquired, and the first cell is any cell within a certain range around the target cell, or is in the target. Any one of the cells in the neighbor list.
  • the configuration parameters of the first cell are obtained.
  • the geographic coordinates of the first cell are converted into geographic coordinates (x2, y2) by the latitude and longitude of the parameters of the network engineering during construction.
  • the antenna height of the base station to which the first cell belongs includes a feature height, a building height, and an antenna hanging height.
  • S203 Calculate a physical distance between the target cell and the first cell according to the geographic coordinates of the target cell, the antenna height of the base station to which the target cell belongs, the geographic coordinates of the first cell, and the antenna height of the base station to which the first cell belongs.
  • the spatial distance between cells will affect the evaluation of subsequent cell relationships.
  • the spatial distance is a distance obtained by correcting the physical distance according to the direction of the antenna of the base station to which the cell belongs.
  • the physical distance refers to the three-dimensional spatial distance calculated according to the geographic coordinates of the cell and the height of the antenna.
  • the physical distance between them is corrected to obtain a spatial distance, and a specific method of obtaining a spatial distance based on the physical distance and the antenna direction information will be described in the following embodiments.
  • the present invention calculates the distance between cells based on the first Fresnel zone theory.
  • the calculation process of the physical distance between the target cell and the first cell is as follows:
  • LOS line of sight
  • NLOS one line of sight
  • non-line of sight Indicates that an obstruction has appeared in the first Fresnel zone.
  • the geographical coordinates of the target cell are (x1, y1)
  • the antenna height of the base station to which the target cell belongs is h1
  • the geographic coordinates of the first cell are (x2, y2)
  • the antenna height of the base station to which the first cell belongs is h2
  • the value of the antenna height includes the height of the feature, the height of the building, and the height of the antenna.
  • the geographical coordinates of the target cell are known to be (x1, y1)
  • the antenna height of the base station to which the target cell belongs is h1
  • the geographic coordinates of the first cell are (x2, y2)
  • the antenna height of the base station to which the first cell belongs is h2.
  • the coverage impact factor is used to correct the physical distance between the target cell and the first cell to obtain a spatial distance.
  • the B-cell and the C-cell have the same physical distance as the A-cell, and the antenna of the base station to which the B-cell belongs and the antenna of the base station to which the A-cell belongs belong to each other, and cover the same area, and the antenna of the base station to which the C-cell belongs and the A-cell belong to If the coverage area of the antenna of the base station does not overlap, the relationship between the B cell and the A cell may be considered to be closer than the relationship between the C cell and the A cell. Therefore, it is necessary to estimate the coverage area between the two cells, and correct the physical distance between the cells by using the coverage influence factor to obtain a spatial distance.
  • S204 specifically includes S204a and S204b.
  • S204a If the coverage of the target cell and the coverage of the first cell do not overlap, set a coverage impact factor between the target cell and the first cell as a fourth preset value.
  • the coverage impact factor can be set to 1, and the coverage impact factor has no effect on the spatial distance.
  • the fourth preset value can be set by the user himself.
  • S204b If the coverage of the target cell overlaps with the coverage of the first cell, set a coverage impact factor between the target cell and the first cell as a ratio of the first area to the second area.
  • the first area is the area of the coverage area of the target cell and the coverage area of the first cell
  • the second area is the area of the total coverage of the target cell and the first cell.
  • the process of calculating the coverage impact factor is as follows:
  • Figure 4 is a horizontal cross-sectional view showing the coverage of the target cell.
  • the point O indicates the location of the base station to which the cell belongs
  • OA indicates the near-point distance of the antenna coverage of the base station to which the cell belongs
  • OB indicates the far-distance distance of the antenna coverage of the base station to which the cell belongs
  • ⁇ indicates the horizontal lobe width (in degrees).
  • the shaded portion indicates the coverage area of the antenna, and it is known that the antenna height of the base station to which the target cell belongs is H, the vertical lobe width is v (in degrees), the antenna direction angle is F (in degrees), and the antenna downtilt angle is T ( The unit is degree).
  • the near point distance OA H * tan ( ⁇ / 2 - T - v / 2)
  • the far point distance OB H * tan ( ⁇ / 2 - T + v / 2)
  • tan () is a tangent function
  • the coverage impact factor is a ratio of the first area to the second area, where the first area is the area of the coverage area of the target cell and the coverage area of the coverage area of the first cell, and may be calculated on the map in actual engineering implementation. a method of overlapping the number of rasters of the area; the second area is the sum of the coverage of the target cell and the first cell, and may also pass A method of calculating the total number of rasters of the target cell and the first cell coverage on the map, thereby obtaining a coverage impact factor.
  • S205 Calculate a spatial distance between the target cell and the first cell according to a physical distance between the target cell and the first cell and a coverage impact factor.
  • the present invention does not limit the specific method for correcting the physical distance according to the coverage influence factor to obtain the spatial distance.
  • the neighboring area of the target cell is a cell whose spatial distance from the target cell is less than the first preset value.
  • the spatial distance between all the cells and the target cell is ranked from small to large, and the cell with a spatial distance smaller than the first preset value from the target cell is used as a neighboring cell of the target cell.
  • the first preset value can be set by the user himself.
  • the first preset value may be a certain distance range value determined according to actual conditions, such as several hundred meters, several kilometers, however, sometimes, in order to determine the certainty of the process, it is necessary to select a layer that determines the number N.
  • the neighboring area therefore, the first preset value may be a spatial distance set between the cell ranked at the (N+1)th position and the target cell. Thereby obtaining a neighboring area of the target cell.
  • S207 Determine a first cell relationship value between the target cell and a neighboring cell of the target cell.
  • the first cell relationship value is used to indicate a cell relationship between the target cell and a neighboring cell of the target cell.
  • S207 specifically includes S207a and S207b.
  • S207a Acquire a cell coefficient and a power interference coefficient of the second cell, and a co-channel interference quantization value and an interference weight between the target cell and the second cell.
  • the second cell is any one of the neighboring cells in the target cell.
  • the cell coefficient of the second cell is determined by the station type of the base station to which the second cell belongs.
  • the station type of the base station includes an indoor station and an outdoor station, and the cell coefficient of the outdoor station is larger than the cell coefficient of the indoor station.
  • the cell coefficient of the second cell may be set to 1. If the base station to which the second cell belongs is an indoor station, the cell coefficient of the second cell may be set to 0.2.
  • the power interference coefficient of the second cell is an effect that characterizes the size of the second cell's transmit power to the target cell.
  • the power interference coefficient of the second cell may be set to 1, if the transmit power and the transmit power of the second cell are reference values. If the phase difference is greater than 2 dB, the power interference coefficient of the second cell may be set to 1/(10 power difference/2 ), where the power difference value refers to the difference between the transmit power of the second cell and the reference value of the transmit power.
  • the same-frequency interference quantized value between the target cell and the second cell is used to characterize the interference generated when the target cell and the second cell communicate using the same frequency.
  • the same-frequency interference quantization value between the second cell and the target cell can be set to be relatively large, for example, it can be set to 100 million. If the second cell and the target cell do not belong to the cell under the same base station, the same-frequency interference quantization value between the second cell and the target cell may be set relatively small, for example, may be set to 100,000.
  • the target cell and the second cell are co-located cells, set the interference weight between the target cell and the second cell to a third preset value.
  • the third preset value can be set by the user himself.
  • the target cell and the second cell are non-same cell, obtain the neighboring cell interference coefficient and the handover interference coefficient of the second cell to the target cell; and according to the neighboring cell interference coefficient and cut The interference coefficient is calculated, and the interference weight between the target cell and the second cell is calculated.
  • the specific calculation method of the interference weight between the target cell and the second cell is as follows:
  • the neighboring cell interference coefficient is decremented according to the spatial distance between the neighboring cell and the target cell of the target cell from small to large, that is, the smaller the spatial distance between the second cell and the target cell, the second cell is targeted to the target.
  • the interference coefficient of the neighboring cell of the cell is larger.
  • the neighboring interference coefficient may be set to a descending sequence, and specifically, may be set by the user.
  • the neighboring cell interference coefficient of each layer of the target cell may be normalized.
  • the handover interference coefficient may be set to 0.25 for the second cell.
  • a handover interference coefficient for the target cell is set for other non-same second cells that are sorted according to the spatial distance from small to large.
  • the specific setting method may refer to Process:
  • the handover interference coefficient is a smaller one of the neighboring cell interference coefficient of the cell to the target cell and the handover interference coefficient of the cell to the target cell of the previous cell.
  • the interference weight between the target cell and the first cell is calculated according to the neighbor cell interference coefficient and the handover interference coefficient of the second cell to the target cell.
  • ⁇ handoff is a switching factor
  • the user can set according to different development stages of the communication network
  • Coef inter is the neighboring interference coefficient
  • Coef handoff is the switching interference coefficient.
  • ⁇ handoff is set to be small, so that when calculating the interference weight of the second cell to the target cell, the impact of the handover data is small, which is more consistent.
  • the ⁇ handoff can be set to be larger, so that when the interference weight of the second cell to the target cell is calculated, the impact of the handover data is large.
  • the above calculation process is performed on all the neighboring areas of the target cell, and the interference weights of all the neighboring areas of the target cell are obtained.
  • the interference weights of all the neighboring cells of the target cell are normalized.
  • S207b Calculate a first cell relationship value between the second cell and the target cell according to the interference weight, the cell coefficient, the power interference coefficient, and the same-frequency interference quantization value.
  • the entire process of calculating the first cell relationship value between the target cell and the second cell (the second cell is any one of the neighboring cells in the target cell) is as follows:
  • Step 1 Determine the station type of the second cell. If the second cell is an indoor station, the cell coefficient is set to 0.2, and if the second cell is an outdoor station, the cell coefficient is set to 1.
  • Step 2 Obtain the transmit power of the second cell. If the transmit power of the second cell differs from the transmit power reference value by no more than 2 dB, set the power interference coefficient to 1, if the transmit power of the second cell differs from the transmit power reference value. If it is greater than 2dB, the power interference coefficient is set to 1/(10 power difference/2 ).
  • the third step is to determine whether the second cell and the target cell belong to the same base station. If the second cell and the target cell belong to the same base station, set the same-frequency interference quantization value of the second cell to X, if the second cell and the target cell If they belong to different base stations, set the same-frequency interference quantization value of the second cell to Y. It can be understood that X is much larger than Y.
  • the fourth step acquiring the interference weight between the second cell and the target cell.
  • Step 5 Calculate a first cell relationship value between the target cell and the second cell according to the cell coefficient, the power interference coefficient, the same-frequency interference quantization value, and the interference weight.
  • the first cell relationship value cell coefficient * power interference coefficient * co-channel interference quantization value * interference weight.
  • the technical solution of the present invention may further include the following steps:
  • S208 may also be performed before S206 after S206, which is not limited by the present invention.
  • the second-layer neighboring cell of the target cell is a cell whose spatial distance from the neighboring cell of the target cell is less than a second preset value.
  • the second-layer neighboring cell of the target cell may be obtained, where the acquiring method of the second-layer neighboring cell of the target cell is obtained by using each layer of the neighboring cell of the target cell as an example. If the second cell is any one of the neighboring cells of the target cell, the second cell is used as the center, and all the cells in the preset range of the second cell and the cells in the neighboring cell list of the second cell are obtained. Calculating the spatial distance between the cells and the second cell, and selecting a cell within a certain preset spatial distance as the second-layer neighboring cell of the target cell, that is, the second-layer neighboring cell of the target cell is a layer of a neighboring cell of the target cell. Neighborhood.
  • the acquiring method of the second-layer neighboring cell of the target cell is the same as the acquiring method of the neighboring cell of the target cell, but only when the neighboring cell of the target cell is acquired, the target cell is used as the center, and the target cell is acquired.
  • the second-level neighboring area is located, it is centered on a neighboring area of the target cell.
  • the preset range of the neighboring cell of the target cell may be set smaller, and the number of the second-layer neighboring cells of each target cell may also be set smaller.
  • the second cell relationship value is used to indicate a cell relationship between the target cell and a second-layer neighboring cell of the target cell.
  • S209 specifically includes S209a and S209b.
  • the third cell is any one of the second-layer neighboring cells of the target cell, and the number of paths is the number of times that the third cell appears in the second-layer neighboring cell of the target cell.
  • the technical solution of the present invention provides a method for calculating a first cell relationship value between a target cell and a layer of a neighboring cell of a target cell, and a second cell relationship between the target cell and a second-layer neighboring cell of the target cell.
  • the method of value is different.
  • the method of calculating the first cell relationship value and calculating the second cell relationship value may also be the same.
  • the same-frequency interference quantization value of the third cell may be set by the user.
  • the same intra-frequency interference quantization value may be set for all the second-layer neighboring cells of the target cell, and may be smaller than the second cell and The same-frequency interference quantized value between the target cells.
  • the number of paths of the third cell refers to the number of occurrences of the third cell in the second-layer neighboring cell of the target cell. It can be understood that the second-layer neighboring cell of the target cell determined by the neighboring cell of the target cell may appear. A cell that repeats with a layer of neighboring cells, and the number of paths can be understood as the number of times each of the two neighboring cells of the target cell appears in the second-layer neighboring cell of the target cell.
  • S209b Calculate a second cell relationship value between the target cell and the third cell according to the same-frequency interference quantization value and the path number.
  • the present invention does not limit the method for calculating the second cell relationship value between the target cell and each of the second-layer neighboring cells of the target cell according to the same-frequency interference quantized value and the number of paths.
  • the fourth cell is a layer neighboring cell of the target cell, and the fourth cell is a second-layer neighboring cell of the target cell, calculate a third cell relationship between the fourth cell and the target cell. value.
  • the third cell relationship value is a sum of a first cell relationship value between the fourth cell and the target cell and a second cell relationship value between the fourth cell and the target cell.
  • the cell relationship value between the fourth cell and the target cell may be further corrected. It can also be corrected.
  • the embodiment of the present invention provides a method for modifying a cell relationship value between a fourth cell and a target cell, that is, adding a second relationship value between the fourth cell and the target cell to the fourth cell and the target cell.
  • the first relationship value between the fourth cell and the target cell is a new cell relationship value
  • the second cell relationship value between the fourth cell and the target cell is deleted.
  • S208-S210 is an optional step, and may not be performed when the actual project is implemented.
  • the technical solution of the present invention can also adopt the method of bidirectional matching in the neighboring area to facilitate the calculation of the cell relationship between the cells.
  • the two-way matching in the neighboring cell means that the current target cell is an A cell, and the B cell is a neighboring cell of the A cell. However, when the B cell is the target cell, there is no A in the neighboring cell of the B cell. For the cell, the A cell is added to a neighboring cell of the B cell based on the method of bidirectional matching in the neighboring cell.
  • An embodiment of the present invention provides a method for determining a cell relationship, which includes: acquiring a layer neighboring cell of a target cell, where a neighboring cell of the target cell is a cell with a spatial distance smaller than a first preset value from the target cell. And determining a first cell relationship value between the target cell and a layer neighboring cell of the target cell, where the first cell relationship value is used to indicate a cell relationship between the target cell and a layer neighboring cell of the target cell.
  • the present invention obtains all cells in a certain range around the target cell and the target cell, and all cells in the preset neighbor cell list in the target cell, and calculates preset rules around the target cell and the target cell. All the cells in the cell, or the spatial distance between the target cell and all cells in the preset neighbor cell list in the target cell, so that a neighboring cell of the target cell can be determined based on the spatial distance, A cell with a relatively close spatial distance is selected as a neighboring cell of the target cell, and then a cell relationship value between the target cell and a neighboring cell of the target cell is calculated, and the prior art only uses the plane distance in the network topology information.
  • the technical solution of the present invention is determined by the target cell. In the cell in the range and the cell in the neighbor cell list of the target cell, determining the cell that needs to calculate the cell relationship value with the target cell according to the spatial distance is more in line with the actual situation, and a more accurate cell relationship is obtained.
  • FIG. 7 is a schematic structural diagram of the device, including:
  • the first obtaining module 10 is configured to acquire a layer neighboring cell of the target cell, where a neighboring cell of the target cell is a cell whose spatial distance from the target cell is less than a first preset value, where the spatial distance is Used to indicate the positional relationship between two cells.
  • the first determining module 11 is configured to determine a first cell relationship value between the target cell and a layer neighboring cell of the target cell, where the first cell relationship value is used to indicate between the target cell and a neighboring cell of the target cell. Community relationship.
  • the device also includes:
  • the second obtaining module 12 is configured to obtain a second-layer neighboring cell of the target cell after acquiring a neighboring cell of the target cell, where the second-layer neighboring cell of the target cell is a space between the neighboring cell and the neighboring cell of the target cell. The distance is less than the second preset value of the cell.
  • the second determining module 13 is configured to determine a second cell relationship value between the target cell and the second-layer neighboring cell of the target cell, where the second cell relationship value is used to indicate between the target cell and the second-layer neighboring cell of the target cell. Community relationship.
  • the first obtaining module 10 is further configured to acquire configuration parameters of the target cell before acquiring a neighboring cell of the target cell, where the configuration parameter of the target cell includes at least a geographic coordinate of the target cell and an antenna height of the base station to which the target cell belongs. A list of neighboring areas is pre-set in the target cell.
  • the first obtaining module 10 is further configured to acquire configuration parameters of the first cell, where A cell is any cell in the neighbor cell list of the target cell, or any cell with a plane distance from the target cell within a preset range, and the configuration parameter of the first cell includes at least the geographic coordinates of the first cell and the first cell.
  • the device also includes:
  • the first calculating module 14 is configured to calculate the physics between the target cell and the first cell according to the geographic coordinates of the target cell, the antenna height of the base station to which the target cell belongs, the geographic coordinates of the first cell, and the antenna height of the base station to which the first cell belongs. distance.
  • the third obtaining module 15 is configured to acquire a coverage impact factor between the target cell and the first cell.
  • the first calculating module 14 is further configured to calculate a spatial distance between the target cell and the first cell according to a physical distance between the target cell and the first cell and a coverage impact factor.
  • the third obtaining module 15 is configured to: if the coverage of the target cell and the coverage of the first cell do not overlap, set a coverage impact factor between the target cell and the first cell as a fourth preset value; if the target cell The coverage area overlaps with the coverage of the first cell, and the coverage impact factor between the target cell and the first cell is set to a ratio of the first area to the second area, where the first area is the coverage of the target cell and the first area The area of the overlapping range of the coverage of the cell, and the second area is the area of the total coverage of the target cell and the first cell.
  • the first determining module 11 specifically includes:
  • the first obtaining sub-module 110 is configured to acquire a cell coefficient and a power interference coefficient of the second cell, and a same-frequency interference quantization value and an interference weight between the target cell and the second cell, where the second cell is a target cell Any cell in the neighboring cell, the cell coefficient is determined by a station type of the second cell, and the same-frequency interference quantization value is used to indicate a interference size when two cells communicate using the same frequency.
  • the first calculation sub-module 111 is configured to calculate a first cell relationship value between the second cell and the target cell according to the interference weight, the cell coefficient, the power interference coefficient, and the same-frequency interference quantization value.
  • the first obtaining sub-module 110 is configured to: if the target cell and the second cell are the same-station cell, set the interference weight between the target cell and the second cell to a third preset value; Or, if the target cell and the second cell are non-same cell, acquiring a neighboring interference coefficient and a handover interference coefficient between the target cell and the second cell; calculating the target cell and the first according to the neighboring interference coefficient and the handover interference coefficient The interference weight between the two cells.
  • the second determining module 13 specifically includes:
  • the second obtaining sub-module 130 is configured to obtain a co-channel interference quantized value between the third cell and the target cell, and a path number of the third cell, where the third cell is any one of the second-layer neighboring cells of the target cell.
  • the number of paths is the number of times the third cell appears in the second-layer neighboring cell of the target cell.
  • the second calculation sub-module 131 is configured to calculate a second cell relationship value between the target cell and the third cell according to the same-frequency interference quantization value and the path number.
  • the device also includes:
  • the second calculating module 16 is configured to determine a first cell relationship value between the target cell and a layer neighboring cell of the target cell, and determine a second cell relationship value between the target cell and the second layer neighboring cell of the target cell, If the fourth cell is a neighboring cell of the target cell, and the fourth cell is the second-layer neighboring cell of the target cell, calculate a third cell relationship value between the fourth cell and the target cell, where the third cell relationship value A sum of a first cell relationship value between the fourth cell and the target cell and a second cell relationship value between the fourth cell and the target cell.
  • An embodiment of the present invention provides an apparatus for determining a cell relationship, including: a first acquiring module, configured to acquire a layer neighboring cell of a target cell, where a neighboring cell of the target cell has a spatial distance smaller than a target cell a first determining module, configured to determine a first cell relationship value between the target cell and a neighboring cell of the target cell, where the first cell relationship value is used to indicate the target cell and the target cell The cell relationship between the adjacent layers.
  • the present invention obtains all cells in a certain range around the target cell and the target cell, and all cells in the preset neighbor cell list in the target cell, and calculates preset rules around the target cell and the target cell. All the cells in the cell, or the spatial distance between the target cell and all cells in the preset neighbor cell list in the target cell, so that a neighboring cell of the target cell can be determined based on the spatial distance, A cell with a relatively close spatial distance is selected as a neighboring cell of the target cell, and then a cell relationship value between the target cell and a neighboring cell of the target cell is calculated, and the prior art only uses the plane distance in the network topology information.
  • the technical solution of the present invention is determined by the target cell. In the cell in the range and the cell in the neighbor cell list of the target cell, determining the cell that needs to calculate the cell relationship value with the target cell according to the spatial distance is more in line with the actual situation, and a more accurate cell relationship is obtained.
  • FIG. 8 is a schematic structural diagram of the device, including:
  • the processor 20 is configured to acquire a layer of a neighboring cell of the target cell, where a neighboring cell of the target cell is a cell with a spatial distance from the target cell that is less than a first preset value, where the spatial distance is used for Indicates the positional relationship between the two cells.
  • the processor 20 is further configured to determine a first cell relationship value between the target cell and a layer of the neighboring cell of the target cell, where the first cell relationship value is used to indicate between the target cell and a neighboring cell of the target cell. Community relationship.
  • the processor 20 is further configured to acquire, after acquiring a neighboring cell of the target cell, a second-layer neighboring cell of the target cell, where the second-layer neighboring cell of the target cell is a spatial distance from a neighboring cell of the target cell. A cell that is smaller than the second preset value.
  • the processor 20 is further configured to determine a second cell relationship value between the target cell and the second-layer neighboring cell of the target cell, where the second cell relationship value is used to indicate between the target cell and the second-layer neighboring cell of the target cell. Community relationship.
  • the processor 20 is further configured to acquire configuration parameters of the target cell before acquiring a neighboring cell of the target cell, where the configuration parameter of the target cell includes at least a geographic coordinate of the target cell and an antenna height of the base station to which the target cell belongs, and the target cell A list of neighbors is pre-set.
  • the processor 20 is further configured to acquire configuration parameters of the first cell, where the first cell is any one of the neighbor cell lists of the target cell, or is between the target cell and the target cell.
  • the plane distance is any one of the cells in the preset range, and the configuration parameter of the first cell includes at least the geographic coordinates of the first cell and the antenna height of the base station to which the first cell belongs.
  • the device also includes:
  • the calculator 21 is configured to calculate a physical distance between the target cell and the first cell according to the geographic coordinates of the target cell, the antenna height of the base station to which the target cell belongs, the geographic coordinates of the first cell, and the antenna height of the base station to which the first cell belongs.
  • the processor 20 is further configured to acquire a coverage impact factor between the target cell and the first cell.
  • the calculator 21 is further configured to calculate a spatial distance between the target cell and the first cell according to a physical distance between the target cell and the first cell and a coverage impact factor.
  • the processor 20 is configured to: if the coverage of the target cell and the coverage of the first cell do not overlap, set a coverage impact factor between the target cell and the first cell to be a fourth preset value 1; If the coverage of the first cell overlaps with the coverage of the first cell, the coverage impact factor between the target cell and the first cell is a ratio of the first area to the second area, where the first area is the coverage of the target cell and the first cell. The area of the overlapping range of the coverage area, and the second area is the area of the total coverage of the target cell and the first cell.
  • the processor 20 is further configured to acquire a cell coefficient and a power interference coefficient of the second cell, and a same-frequency interference quantization value and an interference weight between the target cell and the second cell, where the second cell is a layer of the target cell.
  • the cell coefficient is determined by the station type of the second cell, and the same-frequency interference quantization value is used to indicate the interference size of the two cells when communicating using the same frequency.
  • the calculator 21 is specifically configured to calculate a first cell relationship value between the second cell and the target cell according to the interference weight, the cell coefficient, the power interference coefficient, and the same-frequency interference quantization value.
  • the processor 20 is further configured to: if the target cell and the second cell are the same-station cell, set the interference weight between the target cell and the second cell to a third preset value; or, if the target cell and the second cell For the non-same cell, the neighboring cell interference coefficient and the handover interference coefficient between the target cell and the second cell are obtained; according to the neighboring cell interference coefficient and the handover The interference coefficient calculates the interference weight between the target cell and the second cell.
  • the processor 20 is further configured to acquire the same-frequency interference quantization value between the third cell and the target cell, and the third cell, where the third cell is any one of the second-layer neighboring cells of the target cell,
  • the number of paths is the number of times the third cell appears in the second-level neighboring cell of the target cell.
  • the calculator 21 is further configured to calculate a second cell relationship value between the target cell and the third cell according to the same-frequency interference quantization value and the path number.
  • the calculator 21 is further configured to determine a first cell relationship value between the target cell and a layer neighboring cell of the target cell, and determine a second cell relationship value between the target cell and the second layer neighboring cell of the target cell, if The fourth cell is a layer of the neighboring cell of the target cell, and the fourth cell is the second-layer neighboring cell of the target cell, and the third cell relationship value between the fourth cell and the target cell is calculated, where the third cell relationship value is The sum of the first cell relationship value between the fourth cell and the target cell and the second cell relationship value between the fourth cell and the target cell.
  • An embodiment of the present invention provides an apparatus for determining a cell relationship, including: a processor, configured to acquire a layer neighboring cell of a target cell, where a neighboring cell of the target cell is adjacent to the target cell and between the target cell a cell having a spatial distance less than a first preset value; a processor, configured to determine a first cell relationship value between a target cell and a layer of a neighboring cell of the target cell, where the first cell relationship value is used to indicate the target cell and The cell relationship between the neighboring cells of the target cell.
  • the present invention obtains all cells in a certain range around the target cell and the target cell, and all cells in the preset neighbor cell list in the target cell, and calculates preset rules around the target cell and the target cell. All the cells in the cell, or the spatial distance between the target cell and all cells in the preset neighbor cell list in the target cell, so that a neighboring cell of the target cell can be determined based on the spatial distance, and a cell with a relatively close spatial distance can be selected. As a neighboring cell of the target cell, the cell relationship value between the target cell and the neighboring cell of the target cell is calculated, and the prior art determines the cell relationship value between the cells only by the plane distance in the network topology information.
  • the technical solution in the present invention determines the cell to be calculated and the target cell according to the spatial distance by using a cell in a certain range around the target cell and a cell in the neighbor cell list of the target cell.
  • the cell with the relationship value will be more in line with the actual situation and get a more accurate cell relationship.
  • the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed.
  • the foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé et un appareil de détermination de relation de cellule. Chaque cellule voisine pour laquelle une relation de cellule avec une cellule cible doit être calculée peut être obtenue en se basant sur la distance spatiale entre les cellules, de manière à obtenir une relation de cellule plus précise. Le procédé consiste : à acquérir une couche de cellules voisines pour la cellule cible, la couche de cellules voisines pour la cellule cible étant des cellules qui ont des distances spatiales à partir de la cellule cible inférieures à une première valeur prédéfinie; et à déterminer une première valeur de relation de cellules entre la cellule cible et la couche de cellules voisines pour la cellule cible, la première valeur de relation de cellule étant utilisée pour indiquer une relation de cellules entre la cellule cible et la couche de cellules voisines pour la cellule cible.
PCT/CN2015/084273 2014-12-05 2015-07-16 Procédé et appareil de détermination de relation de cellule WO2016086669A1 (fr)

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