LTE system interference checking method and device

Abstract

The embodiment of the invention provides an LTE system interference checking method and device and relates to the field of communication. By the adoption of the method and device, automatic acquisition and statistics of data can be achieved on the network side, and cell pairs where PCI interference exists are determined. The method specifically comprises the first step of obtaining a measurement report (MR) reported by UE, wherein the MR comprises physical cell-IDs (PCIs) and signal intensity information of servicing cells and adjacent cells in each cell, and the physical cell-IDs (PCIs) and the signal intensity information are measured by the UE, the second step of conducting statistics on the total number of MR sampling points of each servicing cell according to the PCIs of the servicing cells in the MR, the third step of obtaining the total number of sampling points, among the MR sampling points of the same servicing cell, of PCI interference by each adjacent cell to the servicing cell, and the fourth step of comparing the total number of the PCI interference sampling points with the total number of the MR sampling points to obtain a PCI interference sampling point occupation ratio, and then judging whether PCI interference correction needs to be conducted on the corresponding adjacent cells and the corresponding servicing cells according to the PCI interference sampling point occupation ratio. The LTE system interference checking method and device are used for checking the cell pairs where the PCI interference exists.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for checking interference in an LTE system. Background technique [0002] The Long Term Evolution (LTE) mobile communication system is a technical standard of the Universal Mobile Telecommunications System (UMTS) formulated by The 3rd Generation Partnership Project (3GPP). long term evolution. [0003] In the LTE system, each cell is configured with a Physical Cell-id (PCI for short) to distinguish the cells. Among them, the PCI of a cell configured with dual antennas is mainly calculated by the formula: PCI=3*SSS (secondary synchronization signal)+PSS (primary synchronization signal). Therefore, if the PCIs of two same-frequency cells configured with dual antennas The remainder after the modulo operation of the integer 3 is equal, it indicates that the PSSs of the two co-frequency cells are equal, and there will be interference between downlink reference s...

AI Technical Summary

Problems solved by technology

[0005] However, in the existing technology, after a problem occurs in the service quality, the staff will conduct a drive test on the problematic area, which is a passive interference verification, and the real-time performance is not good.

Moreover, each road test needs to consume a lot of manpower, material resources and time, and the work efficiency is too low.

At the same time, the drive test requires technicians to manually measure a specific area through the drive test tool. The covered area is too small, and it is difficult to achieve full area coverage, and only the PCI conflicts of the road surface or cell pairs in a specific area can be checked. problem, it is difficult to count the cell pairs with severe PCI interference for the entire network

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