Method and device for mitigating inter-cell interference

A method for mitigating cell interference, the method comprising:

• transmitting, by a base station (BS) in a cell, a precoding index, a symbol pattern period, an offset of a symbol order, and a precoder change period to a terminal when a precoder per cell is allocated;
• allocating, by the BS, the precoder to all terminals in the cell;
• determining, by the BS, whether the precoder is the same as a precoder of a neighboring cell when the neighboring cell is detected;
• and
• reselecting a precoder based on a cell ID and the offset of the symbol order, when the precoder is the same as the precoder of the neighboring cell.

A method for mitigating cell interference, the method comprising:

• transmitting, by a base station (BS) in a cell, a precoding index, a symbol pattern period, an offset of a symbol order, and a precoder change period to a terminal when a plurality of precoders with different sizes per cell is allocated;
• allocating, by the BS, different precoders to terminals in the cell according to a mobility of the terminals;
• transmitting, by the BS, information on the allocated precoders to the terminal when the BS transmits data or control information;
• determining, by the BS, whether the precoder is the same as a precoder of a neighboring cell when the neighboring cell is detected;
• and
• reselecting a precoder based on a cell ID and the offset of the symbol order, when the precoder is the same as the precoder of the neighboring cell.