The present disclosure provides a transceiver device and scheduling device, and communication methods for transceiver device and scheduling device. The transceiver device comprises a transceiver which, in operation, receives, over a physical downlink control channel (PDCCH), a sub-band occupancy indicator indicating sub-bands determined to be available for a transmission, and a resource allocation indicator indicating resources included in the available sub-bands and assigned to the transceiver device for the transmission. The transceiver device further comprises circuitry which, in operation, determines the assigned resources according to the resource allocation indicator and the sub-band occupancy indicator.