Method and apparatus for determining priorities of neighbor cells

Abstract

The present invention discloses a method and apparatus for determining the priorities of neighbor cells. The objective of the invention is to effectively improve the accuracy of neighbor cells, code resources, frequency resource planning and optimization so as to improve the switching success rate of cells and reduce interference between the neighbor cells. The method for determining the priorities of the neighbor cells includes the following steps that: a stereoscopic space model including the coverage spaces of a cell and each neighbor cell of the cell is determined, a space corresponding to the stereoscopic space model covers the cell and each neighbor cell of the cell; stereoscopic spaces covered by the cell and the neighbor cells are determined in the stereoscopic space model, and a stereoscopic space which is commonly covered by the cell and each neighbor cell is determined according to the stereoscopic spaces covered by the cell and the corresponding neighbor cell; and the sequence of the priorities of the neighbor cells is determined according to the sizes of the stereoscopic spaces which are commonly covered by the cell and the neighbor cells.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for determining the priority of adjacent cells. Background technique [0002] In the network deployment of mobile communication systems, the planning and optimization of adjacent cells, code resources (such as physical layer cell identifiers and random access channel configuration parameters in Long Term Evolution (LTE) systems), and frequency resources are essential. fewer steps. [0003] In the planning and optimization of neighboring cells, it is necessary to determine the priority of neighboring cells and configure neighboring cells with higher priority for the cell. Good planning and optimization of neighboring cells can improve the success rate of cell handover and reduce the system drop rate or dropped calls rate; in code resource planning and optimization, it is also necessary to determine the priority of adjacent cells and configure di...

AI Technical Summary

Problems solved by technology

[0007] With the widespread deployment of heterogeneous networks, more Pico cells and Femto cells will be added to the mobile communication network. The traditional method of determining the priority of neighboring cells based on 2D network topology is no longer suitable for indoor or indoor and outdoor collaboration. Planning and Optimizing Scenarios

For example: large venues covered by Pico cells, buildings covered by Femto cells, floors and garage entrances covered by both Macro and Femto, etc., in the above-mentioned heterogeneous network scenarios, the traditional 2D network topology determines the priority of neighboring cells only Considering the horizontal plane, it is not comprehensive and reasonable enough

[0008] The traditional method of determining the priority of neighboring cells based on 2D network topology only considers the influence of adjacent cells on the 2D horizontal plane, which is only applicable to outdoor Macro cell scenarios, not suitable for various types of cells such as Macro, Pico, and Femto. Constitute a heterogeneous network scenario

If the traditional 2D-based network topology is still used to determine the priority of neighboring cells in a heterogeneous network, the accuracy of planning and optimization of neighboring cells, code resources, and frequency resources will be reduced, and the success rate of cell handover will be affected. Cause serious interference between cells

[0009] To sum up, in the prior art, for heterogeneous network scenarios composed of various types of cells such as Macro, Pico, and Femto, if the traditional method of determining the priority of adjacent cells based on 2D network topology is still used, the adjacent cell priority will be reduced. , code resources, frequency resource planning and optimization accuracy, which in turn affects the success rate of cell handover and causes interference between adjacent cells

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