A wireless apparatus comprising: a first Radio Frequency, RF, unit transmitting and receiving radio signals according to a first wireless communication system; a second RF unit transmitting and receiving radio signals according to a second wireless communication system; and a processor operably coupled to the first RF unit, wherein the processor is configured to: receive an In-Device Coexistence, IDC, interference measurement configuration from a network, wherein the IDC interference measurement configuration comprises information instructing the processor to start IDC interference measurement and information indicative of a log report type, perform a first IDC interference measurement on a first subframe, log first IDC interference information comprising a result of the first IDC interference measurement and a first timing information of the first IDC interference measurement, wherein the first timing information indicates a time interval which is used in measurement for obtaining the result of the first IDC interference measurement and the first timing information is measured in units of subframes, perform a second IDC interference measurement on a second subframe, log second IDC interference information comprising a result of the second IDC interference measurement and a second timing information of the second IDC interference measurement, wherein the second timing information indicates a time interval which is used in measurement for obtaining the result of the second IDC interference measurement and the second timing information is measured in units of subframes, and report, to the network, the first IDC interference information and the second IDC interference information which are logged for a specific logging period which is measured in units of subframes and used for checking a pattern of subframes having the IDC interference, wherein the processor determines that the IDC interference is generated if a transmission power of an in-device exceeds a threshold. a first Radio Frequency, RF, unit transmitting and receiving radio signals according to a first wireless communication system; a second RF unit transmitting and receiving radio signals according to a second wireless communication system; and a processor operably coupled to the first RF unit, wherein the processor is configured to: receive an In-Device Coexistence, IDC, interference measurement configuration from a network, wherein the IDC interference measurement configuration comprises information instructing the processor to start IDC interference measurement and information indicative of a log report type, perform a first IDC interference measurement on a first subframe, log first IDC interference information comprising a result of the first IDC interference measurement and a first timing information of the first IDC interference measurement, wherein the first timing information indicates a time interval which is used in measurement for obtaining the result of the first IDC interference measurement and the first timing information is measured in units of subframes, perform a second IDC interference measurement on a second subframe, log second IDC interference information comprising a result of the second IDC interference measurement and a second timing information of the second IDC interference measurement, wherein the second timing information indicates a time interval which is used in measurement for obtaining the result of the second IDC interference measurement and the second timing information is measured in units of subframes, and report, to the network, the first IDC interference information and the second IDC interference information which are logged for a specific logging period which is measured in units of subframes and used for checking a pattern of subframes having the IDC interference, wherein the processor determines that the IDC interference is generated if a transmission power of an in-device exceeds a threshold. receive an In-Device Coexistence, IDC, interference measurement configuration from a network, wherein the IDC interference measurement configuration comprises information instructing the processor to start IDC interference measurement and information indicative of a log report type, perform a first IDC interference measurement on a first subframe, log first IDC interference information comprising a result of the first IDC interference measurement and a first timing information of the first IDC interference measurement, wherein the first timing information indicates a time interval which is used in measurement for obtaining the result of the first IDC interference measurement and the first timing information is measured in units of subframes, perform a second IDC interference measurement on a second subframe, log second IDC interference information comprising a result of the second IDC interference measurement and a second timing information of the second IDC interference measurement, wherein the second timing information indicates a time interval which is used in measurement for obtaining the result of the second IDC interference measurement and the second timing information is measured in units of subframes, and report, to the network, the first IDC interference information and the second IDC interference information which are logged for a specific logging period which is measured in units of subframes and used for checking a pattern of subframes having the IDC interference, wherein the processor determines that the IDC interference is generated if a transmission power of an in-device exceeds a threshold.