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Cellular mobile communication network public control signal three-dimensional covering control method
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A technology of cellular mobile communication and public control signals, which is applied in the field of three-dimensional coverage control of public control signals of cellular mobile communication networks, and can solve the problems of inapplicable weak coverage elimination and inter-cell interference suppression, difficult to achieve coverage effect, weak coverage, etc.
Active Publication Date: 2015-01-28
ZHEJIANG UNIV
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Problems solved by technology
[0006] (1) adjust the transmission power and / or pitch angle of the base station antenna or antenna array, so that the actual coverage area of the cell can be expanded or reduced simultaneously in all directions (for details, please refer to the Chinese patent whose publication number is CN 102202330A), it is difficult to achieve the ideal overlay effect
[0007] (2) Jointly adjust the pitch and azimuth angles of the antennas or antenna arrays of multiple adjacent cells, or jointly adjust the transmit power of the base station antennas of multiple adjacent cells, so that there is a suitable overlap coverage between the cells as much as possible, but only The actual coverage distance in all directions of the cell expands or decreases at the same time, and it is impossible to reasonably divide the coverage area between cells according to the actual landform
[0008] (3) According to the actual propagation conditions in each direction and the target coverage distance, use an array antenna with beamforming capability on the azimuth plane to control the actual coverage of a single cell by adjusting the antenna pattern (that is, the radiation intensity in each direction on the azimuth plane). Coverage (for details, please refer to the Chinese patent with publication number CN 101304278A), but it often brings over-coverage to adjacent cells while improving the weak coverage of this cell
[0010] All of the above methods are proposed for ground coverage requirements, and are not suitable for weak coverage elimination and inter-cell interference suppression under three-dimensional coverage targets
Method used
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Embodiment 1
[0094] Apply the above three-dimensional coverage control method to the three-dimensional coverage control of a sector, and its implementation process is as follows image 3 shown, including the following steps:
[0095] S101, acquiring a test point set and an interference constraint point set;
[0096] Carry out three-dimensional grid division for the target coverage area of a sector (including the ground coverage area and the above-ground coverage area), record the coordinates of each three-dimensional grid center point, and all three-dimensional grid center points form a set of test points
[0097] Divide the virtual boundary wall of the sector into plane grids, record the coordinates of the center point of each plane grid, and all the center points of the plane grid form a set of interference constraint points
[0098] The virtual boundary wall is at the boundary between the target sector and its two frontal adjacent sectors, and is perpendicular to the ground. The v...
Embodiment 2
[0109] According to the above three-dimensional coverage control method, all sectors are applied one by one to realize the three-dimensional coverage control of the whole network. The implementation process is as follows Figure 4 shown, including the following steps:
[0110] S201, selecting a target sector;
[0111] Select a sector in the entire network that has not yet undergone three-dimensional coverage control as the target sector;
[0112] S202, control the three-dimensional coverage of the target sector;
[0113] Steps S101 to S105 in Embodiment 1 are used to perform stereoscopic coverage control on the selected target sector;
[0114] S203, distinguish, repeat or exit;
[0115] It is judged whether the three-dimensional coverage control has been performed for each sector; if not, return to step S201; otherwise, the three-dimensional coverage control of the whole network has been completed, and the algorithm ends.
[0116] The invention uses the degree of freedom o...
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Abstract
The invention provides a cellular mobile communication network public control signal three-dimensional covering method which includes acquiring a section test point set and an interference restrained point set; acquiring a wirelesssignal transmission path loss set; constructing a wireless manifold vector set; conducting section three-dimensional covering optimization modeling; solving an excitation weight matrix; implementing excitation current feed and covering control. The method achieves section three-dimensional covering control facing actual propagation environment and the target covering distance by optimizing the directional diagram of an area array antenna, namely restrains weak covering rate and the interference degree, minimizes the base station antenna transmission power, and achieves the aim of restraining covering cavity and inter-section interference, saving energy and protecting environment. The method can be used for three-dimensional covering control facing single section and can also be used for three-dimensional covering control of the whole network.
Description
technical field [0001] The invention belongs to the technical field of cellular mobile network communication, and in particular relates to a three-dimensional coverage control method of public control signals of a cellular mobile communication network. Background technique [0002] With the advancement of urbanization and the development of three-dimensional transportation, viaducts, overpasses, and high-rise buildings have rapidly increased. According to data from Emporis, a global construction survey organization, the annual growth rate of high-rise buildings in China exceeds 20%, the average building height of metropolises continues to rise, and cities are expanding into complex three-dimensional airspace. The emergence of three-dimensional high-rise buildings has promoted the exponential growth of the number of wireless communication services and the three-dimensional distribution in three-dimensional space, and also raised the demand for three-dimensional coverage of pu...
Claims
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Application Information
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