Inter-frequency handover method and device in tdd-lte network

Abstract

Embodiments of the present invention provide a method and device for inter-frequency handover in a TDD-LTE network. The inter-frequency handover method includes obtaining MRO measurement data; obtaining all effective sampling points in the handover band according to the MRO measurement data, and obtaining the handover band respectively The first level value of the target serving cell and the second level value of the adjacent cell are used to obtain the level fluctuation data of the adjacent cell in the handover zone; based on the first level value, the second level value, and the preset difference Determine the inter-frequency handover threshold optimization scheme of the target serving cell according to the frequency handover strategy and parameter threshold value, determine the inter-frequency handover time lag optimization scheme of the target serving cell according to the level fluctuation data of the adjacent cells in the handover zone, and optimize the target serving cell Perform inter-frequency switching. The present invention can accurately and efficiently formulate the inter-frequency handover threshold and the inter-frequency handover time lag of each serving cell in a differentiated manner, and can realize refined optimization of cells in the entire network.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of network optimization, and in particular to a method and device for inter-frequency handover in a TDD-LTE network. Background technique [0002] 4G is the fourth-generation mobile communication standard for mobile phones. It refers to the fourth-generation mobile communication technology, including TD-LTE and FDD-LTE. LTE is the long-term evolution technology, which is the abbreviation of Long Term Evolution in English. LTE is technically considered 3.9G. But we usually call them 4G because they have a data download capability of 100Mbps and are also a key process for the evolution from 3G to technology 4G. The LTE standard consists of two different duplex modes, TDD and FDD, where TDD stands for Time Division Dual That is to say, the uplink and downlink are crossed according to time allocation on the same frequency band, and TDD can make better use of spectrum resources and be easie...

AI Technical Summary

Problems solved by technology

[0008] However, the above-mentioned inter-frequency handover solutions in schemes 1 to 3 do not optimize the inter-frequency handover parameters of each cell in a differentiated manner, and there is a defect of "one size fits all"; while scheme 4 only optimizes the neighboring cell ranking list and preset Adding and / or deleting adjacent cells to the target cell with a predetermined optimization strategy is limited to the optimization of adding and / or deleting adjacent cells, but cannot optimize the inter-frequency handover threshold, and the above-mentioned solutions are all inefficient and high cost

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