Method for coordinating inter-cell interference in heterogeneous network and heterogeneous network

摘要

Provided are a method for coordinating inter-cell interference in a heterogeneous network (HetNet) and the heterogeneous network. The method includes: forming M normal base stations and low-power nodes within coverage of the respective normal base stations in the heterogeneous network into a coordinated group; combining mute/non-mute states of bandwidths of the M normal base stations to obtain a plurality of states of the coordinated group; a user of each of the normal base stations feeding at least one first CQI back to the normal base station; a user of each of the low-power nodes feeding one or more second CQIs back to the low-power node; using the first CQI and the second CQIs as a basis to make capacity estimation of the coordinated group; and setting the mute/non-mute states of the bandwidths of the M normal base stations in accordance with a state of the coordinated group corresponding to an optimal system capacity so as to perform data transmission. In the method for coordinating interference provided by the present invention, M transmission points each including one or more normal base stations and low-power nodes covered by the respective normal base stations can be formed into a coordinated group, thereby extending processing for the normal base stations up to all the transmission points in the coordinated group.

主权项

1. A method for coordinating inter-cell interference in a heterogeneous network (HetNet), comprising:
a step A of forming M macro base stations (M is greater than 1) and low-power nodes within coverage of the respective macro base stations in the heterogeneous network into a coordinated group; a step B of combining mute/non-mute states of bandwidths of the M macro base stations to obtain a plurality of states of the coordinated group; a step C of a user equipment of each of the macro base stations in the coordinated group, feeding at least one first channel quality indicator (CQI) corresponding to the states of the coordinated group back to the macro base station; a step D of a user equipment of each of the low-power nodes covered by the macro base stations in the coordinated group, feeding one or more second CQIs corresponding to the states of the coordinated group back to the low-power node; a step E of using the at least one first CQI and the one or more second CQIs as a basis to make capacity estimation of the coordinated group and obtaining a plurality of system capacities corresponding to the respective states of the coordinated group; and a step F of setting the mute/non-mute states of the bandwidths of the M macro base stations in accordance with a state of the coordinated group corresponding to an optimal system capacity so as to perform data transmission, wherein the plurality of states of the coordinated group in the step B include a state where the M macro base stations are all non-mute and a state where the M macro base stations are all mute.