Patent ID: 9379861
Filing Date: 2016-06-28
CPC Classification: H04B,H04L,H04W

Claim Text:
1. A radio base station apparatus communicating with each of one or more radio terminal apparatuses using one of a first transmission scheme, in which a signal is transmitted only by the radio base station apparatus, and a second transmission scheme, in which the signal is transmitted by the radio base station apparatus in coordination with another radio base station apparatus, the radio base station apparatus comprising: a setting section that sets a part of frequency bands of a system band used to communicate with the radio terminal apparatus as first frequency bands used for the first transmission scheme, sets the rest of the frequency bands of the system band as second frequency bands used for the second transmission scheme so as to variably allocate all of the frequency bands of the system band between the first frequency bands and the second frequency bands, sets the first frequency bands used for the first transmission scheme as specific frequency bands for measuring a reception quality, and generates control information including information indicating the specific frequency; a transmitting section that transmits the control information to the radio terminal apparatus; a receiving section that receives a single piece of quality information summarizing the reception quality of all of the specific frequency bands in a single value from the radio terminal apparatus receiving the control information as to the set specific frequency bands; and a determining section that determines whether the radio terminal apparatus is a cell center terminal apparatus or a cell edge terminal apparatus, based on the reception quality indicated by the single value of the received single piece of quality information, wherein when the determining section determines that the radio terminal apparatus is the cell center terminal apparatus, the radio base station apparatus communicates with the radio terminal apparatus by the first transmission scheme, and when the determining section determines that the radio terminal apparatus is the cell edge terminal apparatus, the radio base station apparatus communicates with the radio terminal apparatus by the second transmission scheme.