Patent ID: 11917683
Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. An operation method of a base station in a communication system, the operation method comprising:
configuring one or more guard bands of an unlicensed band;
transmitting first configuration information of the one or more guard bands to a terminal;
transmitting second configuration information indicating whether downlink communication is performed in each of a plurality of RB sets to the terminal; and
performing the downlink communication with the terminal by using a first RB set among a plurality of RB sets configured in frequency resources excluding the one or more guard bands in the unlicensed band, the first RB set being indicated by the second configuration information as an RB set in which the downlink communication is performed,
wherein a number, positions, and sizes of the plurality of RB sets are determined based on the first configuration information, resources of a channel state information-reference signal (CSI-RS) are configured in the plurality of RB sets, a reporting operation of a measurement result on the CSI-RS is performed in the downlink communication between the terminal and the base station in the first RB set, and the reporting operation of a measurement result on the CSI-RS is not performed in a second RB set among the plurality of RB sets when the second RB set is indicated by the second configuration information as an RB set in which the downlink communication is not performed.