A base station comprising: a transmitter that, in operation, transmits configuration information to a user equipment to configure a second trigger condition for a logical channel of the user equipment, the logical channel having tolerance for delaying transmission of a scheduling request, wherein whether a first trigger condition is fulfilled for the logical channel for which the second trigger condition is configured is determined by the user equipment, the first trigger condition to become fulfilled due to data becoming available in a transmission buffer of the user equipment whether the second trigger condition is fulfilled for the logical channel for which the second trigger condition is configured is determined by the user equipment, the second trigger condition to become fulfilled due to a timer related to the data of the transmission buffer being expired wherein the timer is started when the first trigger condition is fulfilled for the logical channel for which the second trigger condition is configured and triggering of a scheduling request transmission is postponed until the timer is expired, and the timer is not started when the first trigger condition is fulfilled for a logical channel for which the second trigger condition is not configured, and a receiver, that, in operation, receives a scheduling request whose transmission was triggered from the user equipment for requesting uplink resources when defined conditions are fulfilled including the first and second trigger conditions being fulfilled for the logical channel for which the second trigger condition is configured. a transmitter that, in operation, transmits configuration information to a user equipment to configure a second trigger condition for a logical channel of the user equipment, the logical channel having tolerance for delaying transmission of a scheduling request, wherein whether a first trigger condition is fulfilled for the logical channel for which the second trigger condition is configured is determined by the user equipment, the first trigger condition to become fulfilled due to data becoming available in a transmission buffer of the user equipment whether the second trigger condition is fulfilled for the logical channel for which the second trigger condition is configured is determined by the user equipment, the second trigger condition to become fulfilled due to a timer related to the data of the transmission buffer being expired wherein the timer is started when the first trigger condition is fulfilled for the logical channel for which the second trigger condition is configured and triggering of a scheduling request transmission is postponed until the timer is expired, and the timer is not started when the first trigger condition is fulfilled for a logical channel for which the second trigger condition is not configured, and a receiver, that, in operation, receives a scheduling request whose transmission was triggered from the user equipment for requesting uplink resources when defined conditions are fulfilled including the first and second trigger conditions being fulfilled for the logical channel for which the second trigger condition is configured. <EOS>