Transmitter apparatus, receiver apparatus, communication system, and communication method

Abstract

A terminal apparatus, that communicates with a base station apparatus, includes an acquiring unit that acquires first information and second information, where the first information specifies a first subframe and the second information specifies a second subframe and a reception quality information transmitting unit that transmits a first channel quality indicator and a second channel quality indicator, where the first channel quality indicator based on or being associated with the first subframe and the second channel quality indicator based on or being associated with the second subframe, and where the first information and the first subframe are different from the second information and the second subframe, respectively.

1 . A terminal apparatus configured to and/or programmed to communicate with a base station apparatus, the terminal apparatus comprising:
 an acquiring unit configured to and/or programmed to acquire first information and second information, the first information specifying a first subframe and the second information specifying a second subframe; and   a reception quality information transmitting unit configured to and/or programmed to transmit a first channel quality indicator and a second channel quality indicator, the first channel quality indicator based on or being associated with the first subframe and the second channel quality indicator based on or being associated with the second subframe, wherein   the first information is different from the second information, and   the first subframe is different from the second subframe.   
     
     
         2 . The terminal apparatus according to  claim 1 , wherein
 the first subframe includes a first resource element in which a reference signal is placed,   the second subframe includes a second resource element in which a reference signal is placed, and   the first resource element is different in level of interference from the second resource element.   
     
     
         3 . The terminal apparatus according to  claim 1 , wherein
 the first subframe includes a first resource element in which a reference signal of a first cell is placed,   the first resource element is used to transmit a signal of a second cell other than the first cell,   the second subframe includes a second resource element in which a reference signal of the first cell is placed,   the second resource element is not used to transmit any signals of the second cell, and   the first cell is configured by the base station apparatus.   
     
     
         4 . A base station apparatus comprising:
 a notifying unit configured to and/or programmed to notify first information and second information, the first information specifying a first subframe and the second information specifying a second subframe; and   a receiving unit configured to and/or programmed to receive a first channel quality indicator and a second channel quality indicator, the first channel quality indicator based on or being associated with the first subframe and the second channel quality indicator based on or being associated with the second subframe, wherein   the first information is different from the second information, and   the first subframe is different from the second subframe.   
     
     
         5 . The base station apparatus according to  claim 4 , wherein
 the base station apparatus is configured to and/or programmed to configure a first cell,   the first subframe includes a first resource element in which a reference signal of the first cell is placed,   the second subframe includes a second resource element in which a reference signal of the first cell is placed, and   the first resource element is different in level of interference at a terminal apparatus from the second resource element.   
     
     
         6 . The base station apparatus according to  claim 4 , wherein
 the base station apparatus is configured to and/or programmed to configure a first cell,   the first subframe includes a first resource element in which a reference signal of the first cell is placed,   the first resource element is used to transmit a signal of a second cell other than the first cell,   the second subframe includes a second resource element in which a reference signal of the first cell is placed, and   the second resource element is not used to transmit any signals of the second cell.   
     
     
         7 . A method performed by a terminal apparatus, the method comprising:
 acquiring first information and second information, the first information specifying a first subframe and the second information specifying a second subframe; and   transmitting a first channel quality indicator and a second channel quality indicator, the first channel quality indicator based on or being associated with the first subframe and the second channel quality indicator based on or being associated with the second subframe, wherein   the first information is different from the second information, and   the first subframe is different from the second subframe.   
     
     
         8 . A method performed by a base station apparatus, the method comprising:
 notifying first information and second information, the first information specifying a first subframe and the second information specifying a second subframe; and   receiving a first channel quality indicator and a second channel quality indicator, the first channel quality indicator based on or being associated with the first subframe and the second channel quality indicator based on or being associated with the second subframe, wherein   the first information is different from the second information, and   the first subframe is different from the second subframe.   
     
     
         9 . The terminal apparatus according to  claim 1 , wherein
 said terminal apparatus including one or more processor(s) and one or more memory device(s), wherein said one or more memory device(s) is configured to and/or programmed to store instructions that, when executed by said one or more processor(s), cause said one or more processor(s) to be configured to and/or programmed to function as said acquiring unit and/or said reception quality information transmitting unit.   
     
     
         10 . The base station apparatus according to  claim 4 , wherein
 said base station apparatus including one or more processor(s) and one or more memory device(s), wherein said one or more memory device(s) is configured to and/or programmed to store instructions that, when executed by said one or more processor(s), cause said one or more processor(s) to be configured to and/or programmed to function as said notifying unit and/or said receiving unit.