Cell interference coordination method used in heterogeneous network and heterogeneous network

Abstract

The invention discloses a cell interference coordination method used in a heterogeneous network and the heterogeneous network. The method comprises the steps that a first base station does not transmit control information on at least one subframe of at least one kind of frequency domain carrier wave in a component carrier wave, and configuration information in regard to an aggregation carrier wave of the first base station is obtained; a second base station does not transmit control information on more than one subframe, except the at least one subframe, in the component carrier wave according to the configuration information. By means of the method, each base station can take the positions of subframes which do not transmit control information of neighboring base stations as control channels of signal transmission of the base station, so that the control channels are not interfered by the neighboring base stations, and then cell interference coordination in the heterogeneous network with carrier aggregation available is achieved, spectrum effectiveness of the edge of a cell is improved, and then service quality of the edge of the cell in the heterogeneous network with carrier aggregation available is improved.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a cell interference coordination method in a heterogeneous network and the heterogeneous network. Background technique [0002] Long Term Evolution (LTE) technology is a new generation wireless communication system launched by 3GPP. The initial deployment of the LTE network usually adopts a large-bandwidth co-frequency networking method. In the same-frequency networking mode, each adjacent cell uses the same carrier. Therefore, users in adjacent cells, especially those at the edge of the cell, may receive the same signal from two or more cells at the same time. frequency signal. When the same-frequency signals from each cell are strong, the user's communication will be severely interfered. In order to solve the problem of mutual interference between cells in the same-frequency networking mode, Inter-cell Interference Coordination (ICIC) is proposed. ICIC contro...

AI Technical Summary

Problems solved by technology

When the Pico base station is close to the macro base station, the downlink signal of the macro base station will cause great interference to the downlink channels of the users at the edge of the Pico cell receiving the carriers f1 and f2 from the Pico base station, which reduces the spectral efficiency of the Pico cell edge and affects the carrier Quality of Service at Cell Edge in Converged Heterogeneous Networks

[0008] However, LTE R10 eICIC only targets cell interference in non-carrier aggregation heterogeneous networks, and currently there is no cell interference coordination scheme in heterogeneous networks that support carrier aggregation

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