Radio communication device and radio communication method

摘要

A radio base station 100 judges a receiving state of a radio signal in conformity with the orthogonal frequency division multiplexing scheme, and changes a symbol string configuration of a symbol string defined by a size in a frequency axis direction and in a time axis direction, on the basis of the judged receiving state.

主权项

1. A radio base station that receives from a radio communication terminal an uplink radio signal including a known signal, in a radio communication system that uses at least an orthogonal frequency division multiplexing, wherein
the known signal is used for estimating quality of a radio resource in the uplink by the radio base station, arranged in a frequency axial direction, and arranged at a location fixed within a sub-frame in a time axial direction, the radio base station comprises notification means that notifies the radio communication terminal of signal configuration designation information including an element relating to a bandwidth of the known signal in the frequency axial direction, the element being indicating the number of frequency bands where a predetermined number of subcarriers are one unit, wherein the notification means notifies the radio communication terminal of the element relating to the bandwidth of the known signal, without notifying the radio communication terminal of a location of the known signal within the sub-frame in the time axial direction.