3D (three-dimension) cell splitting method and 3D cell splitting system

Abstract

The invention provides a 3D (three-dimension) cell splitting method and a 3D cell splitting system. The 3D cell splitting method comprises the following steps of determining the number of cells which need 3D cell splitting according to the load information of user terminals in cells and the location information of each user terminal; enabling all split sectors to use beams which are same in beam width, determining the horizontal dimension width BH of 3D beams by utilizing the number NH of horizontally split cells, determining the vertical dimension width BV of the 3D beams by utilizing the number NV of vertically split cells, and determining a main lobe pointing angle set of each beam; generating a horizontal dimension beam forming vector set WH by adopting a rapid cycle assignment method; generating a vertical dimension beam forming vector set WV by utilizing convex optimization; performing direct product on the horizontal dimension beam forming vector set WH and the vertical dimension beam forming vector set WV to generate a final 3D beam forming vector set W3D, and performing 3D cell splitting based on the W3D. According to the 3D cell splitting method and the 3D cell splitting system provided by the invention, the 3D spatial cell splitting is realized by fully utilizing vertical dimensions, and therefore, the communication network capacity can be increased, and the communication network performance can be improved.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a three-dimensional cell splitting method and system. Background technique [0002] The rapid growth of wireless services and users puts forward higher requirements for network capacity. In the early stage of mobile communication network, each cell has the same size and capacity. With the increase of urban construction and the number of users, the user density is no longer equal. To adapt to this situation, cell splitting has been extensively studied as the main means of capacity enhancement. [0003] In areas with high user density, the area of ​​the cell is reduced, or the omnidirectional antenna of the base station in the cell is changed to a directional antenna, so that the number of channels allocated to each cell increases to meet the needs of increased traffic. This technology is called The neighborhood splits. [0004] However, the traditional cell splittin...

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Problems solved by technology

[0006] The present invention provides a three-dimensional cell splitting method and system to solve the technical problem that the cell splitting method in the prior art does not make full use of the vertical dimension in the three-dimensional space

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