Patent ID: 8238927

Claim:
An OFDM (Orthogonal Frequency Division Multiplex) cellular radio communication method that uses plural sectors corresponding to the number of directional beams of a base station, the OFDM cellular radio communication method comprising the steps of: using, in the base station, first communication resources of time and frequency of a first sector for communicating with a terminal that belongs to the first sector; monitoring channel quality related to communication between the terminal and the base station; when the channel quality is lower than a first threshold, selecting second communication resources of time and frequency which are not being used for a terminal that belongs to a second sector; for communicating with the terminal, adding, in the base station, the selected communication resources of time and frequency of the second sector, the second sector being different from the first sector; and transmitting data to the terminal by cooperation between a first directional beam from the first sector and a second directional beam from the second sector, wherein both the first directional beam and the second directional beam are in accordance with a pattern of time and frequency used by the first sector.