IN A RADIO NETWORK ENVIRONMENT, REDUCING INTERFERE

专利名称：IN A RADIO NETWORK ENVIRONMENT,

REDUCING INTERFERENCE AMONGOVERLAPPING CELLS

发明人：Ning Xu,Jin Yang申请号：US12534995申请日：20090804

公开号：US20110034174A1公开日：20110210

专利附图：

摘要：Disclosed is a method for a femtocell to reduce interference with anoverlapping macrocell. The femtocell determines soft-frequency-reuse (“SFR”)

information of the macrocell. From that information, the femtocell determines whichfrequency sub-channels are assigned by the macrocell for its cell-center users and whichfrequency sub-channels are assigned for cell-edge users. (Cell-edge users are given ahigher transmission power profile in order to overcome potential interference withneighboring macrocells.) Then, the femtocell selects from the cell-center user frequencysub-channels for transmission to the femtocell's users. By transmitting on the cell-centeruser frequency sub-channels, the femtocell reduces interference with the overlappingmacrocell. The femtocell continues to update its knowledge of the macrocell's SFRinformation and re-assigns frequency sub-channels as the SFR changes. If the macrocelldetects that one of its cell-center users is “close enough” to the femtocell, then themacrocell re-assigns the cell-center user as a cell-edge user to overcome interference.

申请人：Ning Xu,Jin Yang

地址：Beijing CN,Beijing CN

国籍：CN,CN

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