Technical ProblemTo mitigate interference by using effective knowledge or information as to an interference signal.Solution to ProblemThere is provided a base station apparatus including a higher layer which configures, in a terminal apparatus, first interference information used in the terminal apparatus in order to mitigate interference from a cell-specific reference signal and at least one of second interference information used in the terminal apparatus in order to mitigate interference from a downlink shared channel, third interference information used in the terminal apparatus in order to mitigate interference from a downlink control channel, and fourth interference information used in the terminal apparatus in order to mitigate interference from an enhanced downlink shared channel, in which each of the second interference information, the third interference information, and the fourth interference information is configured only in a case where the first interference information is being configured.