There is provided an apparatus comprising means for receiving, from a full-duplex network node, at least one message comprising at least primary scheduling information comprising at least a primary resource allocation for uplink data transmission, wherein a configuration related to the primary resource allocation indicates that the primary resource allocation is adjustable; sensing reservation signals on a physical resource block group basis, the sensing comprising determining one or more contiguous sets of physical resource block groups on which the apparatus is allowed to transmit; adjusting the primary resource allocation to correspond to at least a subset of the one or more contiguous sets of PRB groups to obtain an adjusted resource allocation; and transmitting, to the full-duplex network node, an adjustment indication on uplink control channel resource corresponding to the primary resource allocation, wherein the uplink control channel resource is received in the at least one message or is pre-configured.