Patent ID: 8958387
Filing Date: 2015-02-17
Classification: H04B,H04W

Abstract:
1. A mobile communication system using FDMA for an uplink and comprising: a radio base station; a neighboring base station that neighbors the base station; and user equipment; wherein the same frequency for the uplink is used between the radio base station and the neighboring base station, and a time-slot and a frequency to be transmitted by each unit of the user equipment are changed for each unit of the user equipment to multiplex a plurality of user signals, wherein the radio base station includes a first circuit that measures an interference power in a cell that belongs to the radio base station, and a second circuit that transmits to the neighboring base station interference information that includes frequency information in which the interference power is measured, wherein the measured interference power at least relates to the neighboring base station; wherein the neighboring base station includes a third circuit that receives the interference information from the radio base station, and a fourth circuit that checks a correlativity between the frequency and the time-slot of the interference information and that of a signal received from the user equipment and that performs scheduling, for a unit of user equipment in a cell that belongs to the neighboring base station, the scheduling specifying a time-slot and a frequency; and wherein the user equipment includes a fifth circuit that transmits an uplink user signal in accordance with the time-slot and frequency that are specified by the scheduling.