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Method and device for multicell joint optimization under coverage of cellular mobile communication network

A technology of cellular mobile communication and network coverage, applied in the field of multi-cell joint optimization method and device for cellular mobile communication network coverage, capable of solving problems such as increased bad coverage and low bad coverage area

Active Publication Date: 2012-08-01
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention provides a multi-cell joint optimization method and device for cellular mobile communication network coverage, which can jointly adjust the total transmission power and antenna pattern of multiple cell base stations according to actual propagation conditions, not only making the entire network composed of these cells The poor coverage area on the service area is minimized, and the problem of increasing the bad coverage of adjacent cells caused by overcoming the bad coverage of only one cell in the third method mentioned above is also solved

Method used

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  • Method and device for multicell joint optimization under coverage of cellular mobile communication network
  • Method and device for multicell joint optimization under coverage of cellular mobile communication network
  • Method and device for multicell joint optimization under coverage of cellular mobile communication network

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Embodiment 1

[0066] A multi-cell joint optimization method for cellular mobile communication network coverage, where a target area includes multiple cells. Such as figure 1 shown, including steps:

[0067] S101 collects the position information of each base station in the target area; the target area is such as figure 2 shown. The target area contains Q cells. Cell serial number q=1, 2, ..., Q.

[0068] S102 Perform uniform grid division on the target area to obtain the total number K of grid points and the position coordinates of each grid point. The sequence numbers of the grid points k=1, 2, ..., K.

[0069] S103 measures the propagation loss from each base station to each grid point; the universal calculation formula of propagation loss is

[0070] L(θ,s θ ) = P t (θ)-P r (θ, s θ ) (1)

[0071] In formula (1), the unit of each item is decibel; P t (θ) is the transmitting power of the base station in the θ direction, and its value is known; s θ is the distanc...

Embodiment 2

[0101] A multi-cell joint optimization method for cellular mobile communication network coverage, which is used to correct the existing bad coverage of a single cell; the goal of the correction is to minimize the bad coverage of the cell and its neighboring cells that need to be optimized. Such as image 3 As shown, the method of the present embodiment comprises steps:

[0102] S201 collects location information of base stations of a single cell and its neighboring cells.

[0103] S202 Perform uniform grid division on the cell and its adjacent cells to obtain the total number K of grid points and the position coordinates of each grid point. The sequence numbers of the grid points k=1, 2, ..., K.

[0104] S203 measures the propagation loss from each base station to each grid point; use the known antenna transmission power P t (θ k ), the measured received signal power value P r (θ k ,s k ), substituting into equation (2) to calculate the propagation loss L(θ k ,s k ). ...

Embodiment 3

[0108] A device for realizing the optimization method described in embodiment 1, such as Figure 4 shown, including:

[0109] An information collection module 301, configured to collect location information of each base station in the target area;

[0110] The rasterization processing module 302 is used to divide the target area into a uniform grid and obtain the position information of the grid points; the specific processing process is: to divide the target area into a uniform grid to obtain the total number of grid points K and The position coordinates of each grid point.

[0111] A propagation loss determination module 303, configured to input the position information of the grid points and the received signal power values ​​at all grid points measured by external equipment to obtain the propagation loss from each base station to each grid point;

[0112] The traversal solution module 304 is used for inputting the propagation loss from each base station to each grid poin...

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Abstract

The invention discloses a method and a device for multicell joint optimization under coverage of a cellular mobile communication network. The method disclosed by the invention comprises the steps of: collecting the position information of all base stations in a target area; performing grid partitioning on the target area; measuring propagation loss from each base station to each grid point; traversing combinations of total emission power and antenna electrical parameters and making statistics on an adverse coverage ratio; and selecting a combination enabling the adverse coverage ratio to be minimal, and feeding optimal excitation current to each antenna. The device disclosed by the invention comprises an information collection module, a gridding processing module, a propagation loss determination module, a traversing solving module and a selecting module. According to the invention, by means of optimizing directional diagrams and emission power of array antennas to realize the multicell joint optimization orienting to an actual propagation environment under network coverage, the adverse coverage of an entire target area is minimal; and the method and the device not only can be applied to the multicell joint optimization orienting to the actual propagation environment under the network coverage, but also can be used for singly correcting the adverse coverage of exceptional cells.

Description

technical field [0001] The invention relates to the field of cellular mobile communication, in particular to a multi-cell joint optimization method and device for cellular mobile communication network coverage. Background technique [0002] In the field of cellular mobile communication, the effect of cell signal coverage is the most direct and important factor affecting the performance of cellular mobile communication network and user experience. The coverage of the public control signals (pilot, synchronization, etc.) sent through the broadcast channel should make the signal power and signal-to-interference-noise ratio at all locations in the cell higher than the threshold, so as to avoid weak coverage; there should be certain overlapping coverage between adjacent cells The range (switching band) should not be too large to avoid over-coverage and pilot pollution. [0003] In practice, due to differences in geographical environments and other constraints, the distribution o...

Claims

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Application Information

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IPC IPC(8): H04W16/18H04W24/02
Inventor 黄爱苹武洲云周利满单杭冠范东东
Owner ZHEJIANG UNIV
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