Base station apparatus, terminal apparatus, and communication method

Abstract

A base station apparatus, a terminal apparatus, and a communication method are provided that achieve a radio access network in which beam sweeping is appropriately performed in an environment in which a plurality of frame formats are used in a multiplexed fashion. The base station apparatus according to the present invention includes an antenna unit for which a plurality of beam patterns is configurable, a frame configuration unit capable of configuring a plurality of frame configurations; and a beam sweeping unit configured to perform beam sweeping based on a prescribed frame configuration in a case that a frame configuration configured by the frame configuration unit is the prescribed frame configuration.

1 . A base station apparatus configured to communicate with a terminal apparatus, the base station apparatus comprising:
 transmission circuitry configured to transmit a plurality of signals each including a synchronization signal, the plurality of signals being mapped to a plurality of orthogonal frequency division multiplexing (OFDM) symbols, each of OFDM symbols including a plurality of subcarriers, and   higher layer processing circuitry configured to transmit higher layer information indicating spacing between the plurality of subcarriers, wherein   each of the plurality of signals includes a demodulation reference signal resource, and   the higher layer information includes information indicating an allocation of the demodulation reference signal resource.   
     
     
         2 . The base station apparatus according to  claim 1 , wherein
 the plurality of signals include data signal resources associated with the demodulation reference signal resource.   
     
     
         3 . A terminal apparatus configured to communicate with a base station apparatus, the terminal apparatus comprising:
 reception circuitry configured to receive a plurality of signals each including a synchronization signal, the plurality of signals being mapped to a plurality of orthogonal frequency division multiplexing (OFDM) symbols, each of OFDM symbols including a plurality of subcarriers, and   higher layer processing circuitry configured to interpret higher layer information indicating spacing between the plurality of subcarriers, wherein   each of the plurality of signals includes a demodulation reference signal resource, and   the higher layer information includes information indicating an allocation of the demodulation reference signal resource.   
     
     
         4 . A communication method for a base station apparatus configured to communicate with a terminal apparatus, the communication method comprising:
 transmitting a plurality of signals each including a synchronization signal, the plurality of signals being mapped to a plurality of orthogonal frequency division multiplexing (OFDM) symbols, each of OFDM symbols including a plurality of subcarriers, and   transmitting higher layer information indicating spacing between the plurality of subcarriers, wherein   each of the plurality of signals includes a demodulation reference signal resource, and   the higher layer information includes information indicating an allocation of the demodulation reference signal resource.