Terminal device, base station apparatus and communication method

Abstract

There is provided a terminal device that communicates with a base station apparatus. The device includes: a higher layer processing unit that configures a discovery signal which includes cell-specific reference signals present in DwPTSs of all downlink subframes and all special subframes, a first synchronization signal present in a prescribed subframe, a second synchronization signal present in a first subframe, and one or more non-zero power CSI reference signals during a period of continuous subframes in a predetermined cell; and a reception unit that receives the discovery signal. A subframe offset between the second synchronization signal and the non-zero power CSI reference signal is independently configured for each of the non-zero power CSI reference signals.

1 : A terminal device that communicates with a base station apparatus, the terminal device comprising:
 reception circuitry configured to receive a discovery signal which includes a primary synchronization signal present in a subframe, a secondary synchronization signal present in the subframe, and one or more Channel State Information (CSI) reference signals during a period of consecutive subframes in a cell; and   higher layer processing circuitry configured to receive Radio Resource Control (RRC) signaling which indicates, for each of the one or more CSI reference signals, (a) a physical cell ID of the cell and (b) a subframe offset between (i) the secondary synchronization signal and (ii) the each of the one or more CSI reference signals.   
     
     
         2 : A base station device that communicates with a terminal apparatus, the base station device comprising:
 transmission circuitry configured to transmit a discovery signal which includes a primary synchronization signal present in a subframe, a secondary synchronization signal present in the subframe, and one or more Channel State Information (CSI) reference signals during a period of consecutive subframes in a cell; and   higher layer processing circuitry configured to send Radio Resource Control (RRC) signaling which indicates, for each of the one or more CSI reference signals, (a) a physical cell ID of the cell and (b) a subframe offset between (i) the secondary synchronization signal and (ii) the each of the one or more CSI reference signals.   
     
     
         3 : A method for a terminal device that communicates with a base station apparatus, the method comprising:
 receiving a discovery signal which includes a primary synchronization signal present in a subframe, a secondary synchronization signal present in the subframe, and one or more Channel State Information (CSI) reference signals during a period of consecutive subframes in a cell; and   receiving Radio Resource Control (RRC) signaling which indicates, for each of the one or more CSI reference signals, (a) a physical cell ID of the cell and (b) a subframe offset between (i) the secondary synchronization signal and (ii) the each of the one or more CSI reference signals.   
     
     
         4 : A method for a base station device that communicates with a terminal apparatus, the method comprising:
 transmitting a discovery signal which includes a primary synchronization signal present in a subframe, a secondary synchronization signal present in the subframe, and one or more Channel State Information (CSI) reference signals during a period of consecutive subframes in a cell; and   sending Radio Resource Control (RRC) signaling which indicates, for each of the one or more CSI reference signals, (a) a physical cell ID of the cell and (b) a subframe offset between (i) the secondary synchronization signal and (ii) the each of the one or more CSI reference signals.