Patent ID: 9485775
Filing Date: 2016-11-01
CPC Classification: H04B,H04L,H04W

Claim Text:
1. A radio communication system comprising a radio base station to form a cell and user terminals to establish wireless connection with the radio base station, wherein: the radio base station comprises: an antenna that has varying antenna configurations between at least two types of communication each matching a number of formed beams, and that can transmit signals to all areas which the radio base station covers, by an antenna configuration corresponding to one type of the at least two types of communication; a resource allocation control section that allocates radio resources to a downlink signal including a signal whose type is based on capacities of a user terminal and the type of communication; a multiplexing section that multiplexes a reference signal on a resource block; a precoding weight generating section that generates a precoding weight which allows the antenna to form a number of beams to match the type of communication; and a precoding multiplication section that multiplies a downlink signal to supply to the antenna by the precoding weight generated by the precoding weight generating section, wherein the antenna is formed with a plurality of antenna elements that are arranged in a line in vertical direction and that are grouped into at least one group in association with each of the at least two types of communication; and the user terminal comprises: a quality measurement section that measures channel quality from the reference signal included in the downlink signal; a feedback information generating section that generates feedback information pertaining to communication quality using the measured channel quality; and a transmission section that feeds back the feedback information generated by the feedback information generating section to the radio base station via an uplink, wherein a mix type of communication that selects the at least two types of communication, including the one type of the at least two types of communication, at the same time, is used as the mixed communication type, wherein in a phase to start communication, the mixed communication type is selected, and wherein the multiplexing section multiplexes a plurality of reference signals to use in each communication type on a same resource block.