Patent ID: 8886254
Filing Date: 2014-11-11
Classification: H04W

Abstract:
1. A radio base station which includes an antenna and adjusts directivity of a radio wave to be transmitted and received by an antenna weight provided in the antenna, the radio base station comprising: a receiver which receives a first reference signal from a first mobile terminal and a second reference signal from a second mobile terminal; and a processer which produces antenna weight which is based on the first and the second reference signals, to the antenna for sending a common data to the first and the second mobile terminals, wherein the processor calculates a standard power, as a reception power of each antenna obtained when a first antenna weight is cancelled, of the reference signal received from a mobile terminal, calculates an index value of a reception quality inside of an area of the radio base station by dividing a sum of the values obtained by multiplying each of the plurality of antenna weights which is obtained by the radio base station by each of the standard powers of the first mobile terminal by the sum of the values obtained by multiplying each of the plurality of antenna weights by each of the standard powers of the second mobile terminal, and specifies the antenna weight from among the plurality of antenna weights.