Patent ID: 8139557
Filing Date: 2012-03-20
Classification: H04B,H04L,H04W

Abstract:
1. A radio base-station apparatus for performing OFDMA multiple-access processing in a cell divided into a plurality of sectors, comprising: a plurality of radio base-station devices, each radio base-station device associated with one of the sectors and including a transmitter/receiver block that transmits the frames, wherein each of the radio base-station devices operates on a same radio frequency with a frequency reuse factor of 1, each of the frames includes a preamble and frame control information arranged sequentially at a beginning of the respective frame, and when each of the radio base-station devices operates on the same radio frequency with the frequency reuse factor of 1, the radio base-station devices transmit the frames such that the preambles and frame control information of the frames do not interfere with each other between the frames and that beginnings of data regions of the frames on the OFDMA symbol numbers coincide with each other.