A first communication apparatus, comprising a circuitry, which is configured to: measure a first channel busy ratio for a control channel resource pool and a second channel busy ratio for a data channel resource pool, wherein the control channel resource pool includes a Physical Sidelink Control Channel, PSCCH, resource pool and the data channel resource pool includes a Physical Sidelink Shared Channel, PSSCH, resource pool; adjust, if the first channel busy ratio exceeds a predetermined threshold, a number of transmissions of a transport block of a first signal, to be transmitted in resources of the control channel resource pool; and adjust, if the second channel busy ratio exceeds the predetermined threshold, a number of transmissions of a transport block of a second signal, to be transmitted in resources of the data channel resource pool; and a transmitter, which is configured to: report the measured first and second channel busy ratio to a base station; transmit, if the first channel busy ratio exceeds the predetermined threshold, the first signal in occupied resources in the control channel resource pool for data with a priority lower than a priority of the first signal; and transmit, if the second channel busy ratio exceeds the predetermined threshold, the second signal in occupied resources in the data channel resource pool for data with a priority lower than a priority of the second signal. comprising a circuitry, which is configured to: measure a first channel busy ratio for a control channel resource pool and a second channel busy ratio for a data channel resource pool, wherein the control channel resource pool includes a Physical Sidelink Control Channel, PSCCH, resource pool and the data channel resource pool includes a Physical Sidelink Shared Channel, PSSCH, resource pool; adjust, if the first channel busy ratio exceeds a predetermined threshold, a number of transmissions of a transport block of a first signal, to be transmitted in resources of the control channel resource pool; and adjust, if the second channel busy ratio exceeds the predetermined threshold, a number of transmissions of a transport block of a second signal, to be transmitted in resources of the data channel resource pool; and measure a first channel busy ratio for a control channel resource pool and a second channel busy ratio for a data channel resource pool, wherein the control channel resource pool includes a Physical Sidelink Control Channel, PSCCH, resource pool and the data channel resource pool includes a Physical Sidelink Shared Channel, PSSCH, resource pool; adjust, if the first channel busy ratio exceeds a predetermined threshold, a number of transmissions of a transport block of a first signal, to be transmitted in resources of the control channel resource pool; and adjust, if the second channel busy ratio exceeds the predetermined threshold, a number of transmissions of a transport block of a second signal, to be transmitted in resources of the data channel resource pool; and a transmitter, which is configured to: report the measured first and second channel busy ratio to a base station; transmit, if the first channel busy ratio exceeds the predetermined threshold, the first signal in occupied resources in the control channel resource pool for data with a priority lower than a priority of the first signal; and transmit, if the second channel busy ratio exceeds the predetermined threshold, the second signal in occupied resources in the data channel resource pool for data with a priority lower than a priority of the second signal. report the measured first and second channel busy ratio to a base station; transmit, if the first channel busy ratio exceeds the predetermined threshold, the first signal in occupied resources in the control channel resource pool for data with a priority lower than a priority of the first signal; and transmit, if the second channel busy ratio exceeds the predetermined threshold, the second signal in occupied resources in the data channel resource pool for data with a priority lower than a priority of the second signal.