Patent ID: 8874118

Claim:
A base station, which is capable of communicating with a relay node, the base station comprising: a control unit configured, at a time of handing over the relay node from a first cell of a plurality of cells serviced by the base station to a second cell of a plurality of cells serviced by a second base station, to compare a source neighbour cell list of the first cell to a destination neighbour cell list of the second cell, to identify a non-overlapping cell, the non-overlapping cell being a cell that is not in common between the source neighbour cell list and the destination neighbour cell list, each neighbor cell list including adjacent cell information of a respective cell, and to update a neighbour cell list provided for the identified non-overlapping cell by deleting a relay node cell belonging to the relay node from the neighbour cell list provided for the non-overlapping cell, wherein the control unit is configured, at a time of the relay node being handed over from a third cell belonging to the second base station to a fourth cell belonging to the base station, to compare a source neighbour cell list of the third cell to a destination neighbour cell list of the fourth cell, to identify a second non-overlapping cell, the second non-overlapping cell being a cell that is not in common between the source neighbour cell list of the third cell and the destination neighbour cell list of the fourth cell, and to update a neighbour cell list corresponding to the second non-overlapping cell by adding the relay node cell to the neighbour cell list corresponding to the second non-overlapping cell.