Patent ID: 11917669
Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. The operation method according to claim 1, further comprising:
receiving, from the terminal, a feedback signal comprising an identifier of a fourth fifth transmission beam by using a fifth reception beam;
obtaining fifth received signal strength information of the feedback signal;
transmitting, to the controller, fifth beam pair information including the identifier of the fifth transmission beam and an identifier of the fifth reception beam and the fifth received signal strength information;
receiving, from the controller, information on a third transmission beam pair selected from the first beam pair information, the second beam pair information, and the third beam pair information based on the first received signal strength information, the second received signal strength information, the third received signal strength information, the fifth received signal strength information, and the fifth beam pair information; and
transmitting data to the terminal by using a transmission beam according to the third transmission beam pair.