Patent ID: 9166752
Filing Date: 2015-10-20
Classification: H04L,H04W

Abstract:
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 a first element relating to a bandwidth of the known signal in the frequency axial direction and a second element indicating a duration of the known signal in the time axial direction, the first 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 first element and the second element, without notifying the radio communication terminal of a location of the known signal within the sub-frame in the time axial direction.