Method for uplink interference coordination in single frequency networks, a base station, a mobile terminal and a mobile network therefor
First Claim
1. A method for coordination of the interference in the uplink between cells of a single frequency network with the frequency band used for uplink being subdivided into at least two subsets, wherein a dedicated subset of said at least two subsets is selected to be burdened more by inter-cell interference and is allocated under observation of the strong intercell interference in this dedicated subset to mobile terminals located in a first cell or a region of the first cell of said cells, and mobile terminals located in the border area of a second cell of said cells neighbored to the first cell and causing the strongest interference in said first cell or said region of the first cell are based on further network criteria tried to be scheduled to said dedicated subset.
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Abstract
The invention concerns a method for coordination of the interference in the uplink between cells (C1,C6) of a single frequency network with the frequency band used for uplink being subdivided into at least two subsets (F1, F2 . . . FR), whereby a dedicated subset (F1) of said at least two subsets (F1, F2 . . . FR) is selected to be burdened more by inter-cell interference and is allocated under observation of the strong inter-cell interference in this dedicated subset to mobile terminals located in a first cell (C1), and mobile terminals (T2) located in the border area of a second cell (C6) of said cells neighbored to the first cell and causing the strongest interference in said first cell (C1) are based on further network criteria tried to be scheduled to said dedicated subset (F1), a base station, a mobile terminal and a mobile network therefor.
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Citations
10 Claims
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1. A method for coordination of the interference in the uplink between cells of a single frequency network with the frequency band used for uplink being subdivided into at least two subsets, wherein
a dedicated subset of said at least two subsets is selected to be burdened more by inter-cell interference and is allocated under observation of the strong intercell interference in this dedicated subset to mobile terminals located in a first cell or a region of the first cell of said cells, and mobile terminals located in the border area of a second cell of said cells neighbored to the first cell and causing the strongest interference in said first cell or said region of the first cell are based on further network criteria tried to be scheduled to said dedicated subset.
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7. A base station for coordination of the interference in the uplink between cells of a single frequency network with the frequency band used for uplink being subdivided into at least two subsets, wherein
the base station comprises means for identifying by means of dedicated cell specific signals transmitted from mobile terminals from which cell or region of a cell an interference stems from, the base station comprises means for sending to another base station a notification about an interference, the base station comprises means for finding out by means of its history or additional information about their terminals from which mobile terminal an interference was caused, the base station comprises means for comparing the notifications from several base stations about interference, and the base station comprises means for scheduling a mobile terminal to the dedicated subset of the cell or the region of the cell that experiences the strongest interference caused by said mobile terminal.
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8. A mobile terminal for coordination of the interference in the uplink between cells of a single frequency network with the frequency band used for uplink being subdivided into at least two subsets, wherein
the mobile terminal comprises means for evaluating in which cell or region of a cell it creates interferences by means of downlink interference or path loss measurements, and the mobile terminal comprises means for demanding to be scheduled to the dedicated subset of the cell or region of the cell in which it creates the strongest interferences.
Specification