A method, performed by a wireless transmit receive unit for of activating or deactivating at least one in-carrier guard band in a bandwidth part includes receiving a configuration of a set of in carrier guard bands, receiving a channel resource configuration associated with a guard band of the set of in-carrier guard bands, and receiving an indication that the guard band is activated or deactivated. On condition that the guard band of the set of in-carrier guard bands is deactivated, performing a measurement on at least one received reference signal in resources of the channel resource configuration including resources in the deactivated guard band. On condition that the guard band is activated, performing a measurement on at least one received reference signal in resources of the channel resource configuration excluding resources in the activated guard band.