METHOD FOR COMMUNICATION USING LARGE-SCALE ANTENNA IN MULTI-CELL ENVIRONMENT
First Claim
1. A communication method performed in a base station, the method comprising:
- classifying a plurality of terminals in a cell of the base station into a least one cell center group and at least one cell edge group according to their positions;
transmitting downlink pilot signals to each group;
receiving a first Precoding Matrix Indicator (PMI) for the cell and a second PMI for interference signal from a cell adjacent to the cell from each terminal belonging to the at least one cell edge group; and
generating information on interferences between multi-cells based on the first PMI and the second PMI.
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Abstract
Disclosed is a communication method using a large-scale antenna in a multi-cell environment. The method comprises classifying a plurality of terminals in a cell of the base station into a least one cell center group and at least one cell edge group according to their positions; transmitting downlink pilot signals to each group; receiving a first Precoding Matrix Indicator (PMI) for the cell and a second PMI for interference signal from a cell adjacent to the cell from each terminal belonging to the at least one cell edge group; and generating information on interferences between multi-cells based on the first PMI and the second PMI. Therefore, information exchange for interference control between base stations can be minimized.
32 Citations
16 Claims
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1. A communication method performed in a base station, the method comprising:
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classifying a plurality of terminals in a cell of the base station into a least one cell center group and at least one cell edge group according to their positions; transmitting downlink pilot signals to each group; receiving a first Precoding Matrix Indicator (PMI) for the cell and a second PMI for interference signal from a cell adjacent to the cell from each terminal belonging to the at least one cell edge group; and generating information on interferences between multi-cells based on the first PMI and the second PMI. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A communication method performed in a base station, the method comprising:
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determining an interference Precoding Matrix Indicator (PMI) set for obtaining information on interferences between terminals in a cell of the base station and interferences from other cells based on pre-constructed information on interferences between multi-cells; and providing a terminal with the interference PMI set. - View Dependent Claims (11, 12, 13)
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14. A communication method performed in a base station, the method comprising:
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receiving information on strengths of interference signals from multiple transmission points fed back from a terminal; and performing a multi-user scheduling based on the information on strengths of interference signals from multiple transmission points. - View Dependent Claims (15, 16)
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Specification