In accordance with another aspect of the disclosure, a method performed by a second terminal is provided. The method includes receiving, from a base station, a control message including a configuration for a configured sidelink grant, and receiving, from a first terminal, a sidelink signal based on the configured sidelink grant for a first sidelink logical channel which is allowed to use the configured sidelink grant, wherein, while a timer associated with a radio link failure is running, the sidelink signal is received from the first terminal based on the configured grant, in case that there is no sidelink logical channel not available for the configured sidelink grant, and wherein, while the timer is running, the sidelink signal is received from the first terminal based on a resource from an exceptional transmission pool, in case that there is second logical channel not available for the configured sidelink grant.