# US 12,764,749 B2 · Method and apparatus for network controlled repeater in wireless communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,764,749 B2 - Document ID: US12764749B2 - Status: Granted - Kind: B2 - Application number: 18/180,774 - Filed: 2023-03-08 - Published: 2023-09-14 - Granted: 2026-10-13 - Earliest claimed: 2022-03-08 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Kyungjun Choi; Kyunggyu Lee; Seongmok Lim; Youngrok Jang; Hyoungju Ji - Web page: https://patentgrep.com/patent/US12764749B2 ## CPC - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 27/26025: {Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking (allocating sub-channels of the transmission path H04L5/003)} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. According to an embodiment of the disclosure, a method and an apparatus for operating a repeater in a wireless communication system. According to an embodiment of the disclosure, a method performed by a repeater in a wireless communication system is provided. The method includes receiving, from a base station, a repeater control information (RCI) including information on beam via physical downlink control channel (PDCCH) or medium access control (MAC) control element (CE), receiving, from the base station, a signal, and amplifying and transmitting the amplified signal, to a user equipment (UE), based on the RCI and a subcarrier spacing for the beam, wherein the RCI includes information on time for the beam. ## Claims ### Claim 1 A method of a repeater in a wireless communication system, the method comprising: receiving, from a base station via a higher layer signaling, configuration information for a transmission on an access link, the configuration information including a first beam index; receiving, from the base station via physical downlink control channel (PDCCH), control information indicating a second beam index; performing the transmission on the access link with a user equipment (UE) based on the second beam index, in case that the configuration information does not include a value; and performing the transmission on the access link with the UE based on the first beam index, in case that the configuration information includes the value. ### Claim 2 (depends on 1) The method of claim 1, wherein the first beam index or the second beam index for the transmission or the receptions on the access link with the UE is identified when a first time interval corresponding to the first beam index overlaps a second time interval corresponding to the second beam index. ### Claim 3 (depends on 1) The method of claim 1, wherein the configuration information includes information on periodicity and offset for the transmission on the access link. ### Claim 4 (depends on 1) The method of claim 1, wherein the configuration information further includes information on subcarrier spacing. ### Claim 5 (depends on 1) The method of claim 1, further comprising: receiving, from the base station, medium access control (MAC) control element (CE) indicating to change the first beam index, and applying the change after a predetermined time from transmitting hybrid automatic repeat request (HARQ)-acknowledgement (ACK) information. ### Claim 6 A method of a base station in a wireless communication system, the method comprising: transmitting, to a repeater via a higher layer signaling, configuration information for a transmission on an access link, the configuration information including a first beam index; and transmitting, to the repeater via physical downlink control channel (PDCCH), control information indicating a second beam index, wherein the repeater performs the transmission on the access link with a user equipment (UE) based on the second beam index, in case that the configuration information does not include a value, and wherein the repeater performs the transmission or on the access link with the UE based on the first beam index, in case that the configuration information includes the value. ### Claim 7 (depends on 6) The method of claim 6, wherein the first beam index or the second beam index for the transmission or the receptions on the access link with the UE is identified when a first time interval corresponding to the first beam index overlaps a second time interval corresponding to the second beam index. ### Claim 8 (depends on 6) The method of claim 6, wherein the configuration information includes information on periodicity and offset for the transmission on the access link. ### Claim 9 (depends on 6) The method of claim 6, wherein the configuration information further includes information on subcarrier spacing. ### Claim 10 (depends on 6) The method of claim 6, further comprising: transmitting, to the repeater, medium access control (MAC) control element (CE) indicating to change the first beam index, wherein the repeater applies the change after a predetermined time from transmitting hybrid automatic repeat request (HARQ)-acknowledgement (ACK) information. ### Claim 11 A repeater in a wireless communication system, the repeater comprising: a transceiver; and at least one controller coupled to the transceiver, the at least one controller configured to: receive, from a base station via a higher layer signaling, configuration information for a transmission on an access link, the configuration information including a first beam index, receive, from the base station via physical downlink control channel (PDCCH), control information indicating a second beam index, perform the transmission on the access link with a user equipment (UE) based on the second beam index, in case that the configuration information does not include a value, and perform the transmission on the access link with the UE based on the first beam index, in case that the configuration information includes the value. ### Claim 12 (depends on 11) The repeater of claim 11, wherein the first beam index or the second beam index for the transmission on the access link with the UE is identified when a first time interval corresponding to the first beam index overlaps a second time interval corresponding to the second beam index. ### Claim 13 (depends on 11) The repeater of claim 11, wherein the configuration information includes information on periodicity and offset for the transmission on the access link. ### Claim 14 (depends on 11) The repeater of claim 11, wherein the configuration information further includes information on subcarrier spacing. ### Claim 15 (depends on 11) The repeater of claim 11, wherein the at least one controller is further configured to: receive, from the base station, medium access control (MAC) control element (CE) indicating to change the first beam index, and apply the change after a predetermined time from transmitting hybrid automatic repeat request (HARQ)-acknowledgement (ACK) information. ### Claim 16 A base station in a wireless communication system, the base station comprising: a transceiver; and at least one controller coupled to the transceiver, the at least one controller configured to: transmit, to a repeater via a higher layer signaling, configuration information for a transmission on an access link, the configuration information including a first beam index, transmit, to a repeater via physical downlink control channel (PDCCH), control information indicating a second beam index, and wherein the repeater performs the transmission on the access link with a user equipment (UE) based on the second beam index, in case that the configuration information does not include a value, and wherein the repeater performs the transmission on the access link with the UE based on the first beam index, in case that the configuration information includes the value. ### Claim 17 (depends on 16) The base station of claim 16, wherein the first beam index or the second beam index for the transmission or the receptions on the access link with the UE is identified when a first time interval corresponding to the first beam index overlaps a second time interval corresponding to the second beam index. ### Claim 18 (depends on 16) The base station of claim 16, wherein the configuration information includes information on periodicity and offset for the transmission on the access link. ### Claim 19 (depends on 16) The base station of claim 16, wherein the configuration information further includes information on subcarrier spacing. ### Claim 20 (depends on 16) The base station of claim 16, wherein the at least one controller is further configured to: transmit, to the repeater, medium access control (MAC) control element (CE) indicating to change the first beam index, wherein the repeater applies the change after a predetermined time from transmitting hybrid automatic repeat request (HARQ)-acknowledgement (ACK) information.