# US 12,604,307 B2 · Method and apparatus for transmitting and receiving signal in communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,604,307 B2 - Document ID: US12604307B2 - Status: Granted - Kind: B2 - Application number: 18/077,121 - Filed: 2022-12-07 - Published: 2023-06-15 - Granted: 2026-04-14 - Earliest claimed: 2021-12-09 - Assignees: Electronics and Telecommunications Research Institute - Applicants: Electronics and Telecommunications Research Institute - Inventors: Cheul Soon Kim; Sung Hyun Moon; Jung Hoon Lee; Young-Jo Ko - Web page: https://patentgrep.com/patent/US12604307B2 ## CPC - H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information} - H04W 72/1263: Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows - H04B 7/0617: {for beam forming} - H04B 7/0639: {Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection} - H04B 7/15528: {Control of operation parameters of a relay station to exploit the physical medium} - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - H04L 5/0023: {Time-frequency-space} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04W 72/046: {the resource being in the space domain, e.g. beams} - H04W 72/20: Control channels or signalling for resource management - H04W 88/04: adapted for relaying to or from another terminal or user - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION ## Abstract A method of an intermediate node for relaying communication between a base station and a terminal may comprise: receiving, from the base station, first control information including on/off indication; and determining whether to relay the communication between the base station and the terminal according to the on/off indication, wherein when the on/off indication indicates ‘on’, the communication between the base station and the terminal is relayed, and when the on/off indication indicates ‘off’, the communication between the base station and the terminal is not relayed. ## Claims ### Claim 1 A method of an intermediate node for relaying communication between a base station and a terminal, comprising: receiving, from the base station, first control information including on/off indication and a transmission configuration indication (TCI) state to be applied by the intermediate node, which is used to relay the communication between the base station and the terminal; determining whether to relay the communication between the base station and the terminal according to the on/off indication; relaying the communication between the base station and the terminal when the on/off indicates ‘on’; and receiving second control information from the base station, wherein the second control information is received after receiving the first control information, and when the first control information and the second control information are to be applied to a same time period, an information element of the second control information is selected to be applied to the same time period, and the information element is at least one of the on/off indication of the TCI state, wherein the relaying of the communication comprises: transmitting a first signal received from the base station to the terminal; transmitting a second signal received from the terminal to the base station; transmitting a third signal generated by the intermediate node to the base station; and transmitting, to the base station, a fourth signal obtained by multiplexing a fifth signal generated by the intermediate node and a sixth signal received from the terminal. ### Claim 2 (depends on 1) The method according to claim 1, wherein the on/off indication is classified into a downlink (DL) on/off indication and an uplink (UL) on/off indication; when the DL on/off indication indicates ‘DL on’, the intermediate node performs DL communication for the terminal; and when the UL on/off indication indicates ‘UL on’, the intermediate node perform UL communication for the base station. ### Claim 3 (depends on 1) The method according to claim 1, wherein a TCI state applied to a DL reception beam and a TCI state applied to a DL transmission beam of the intermediate node are independently controlled by the base station. ### Claim 4 (depends on 1) The method according to claim 1, further comprising: transmitting hybrid automatic repeat request (HARQ)-acknowledgment (ACK) for the first control information to the base station. ### Claim 5 (depends on 1) The method according to claim 1, wherein a subcarrier spacing (SCS) of the intermediate node is greater than or equal to an SCS of the terminal. ### Claim 6 (depends on 1) The method according to claim 1, wherein the first control information is reflected at the intermediate node after an application delay required for applying the first control information elapses. ### Claim 7 A method of a base station, comprising: transmitting, to an intermediate node relaying communication between the base station and a terminal, first control information including on/off indication and a transmission configuration indication (TCD) state to be applied by the intermediate node, which is used to relay the communication between the base station and the terminal; transmitting second control information to the intermediate node, wherein when the second control information is transmitted after transmitting the first control information, and when the first control information and the second control information are to be applied to a same time period an information element of the second control information is selected to be applied to the same time period, and the information element is at least one of the on/off indication of the TCI state; and performing communication with the terminal according to the on/off indication, wherein when the on/off indication indicates ‘on’, the communication between the base station and the terminal is relayed by the intermediate node, and wherein the communication between the base station and the terminal is relayed by the intermediate node that performs: transmitting a first signal received from the base station to the terminal; transmitting a second signal received from the terminal to the base station; transmitting a third signal generated by the intermediate node to the base station; and transmitting, to the base station, a fourth signal obtained by multiplexing a fifth signal generated by the intermediate node and a sixth signal received from the terminal. ### Claim 8 (depends on 7) The method according to claim 7, wherein a TCI state applied to a downlink (DL) reception beam and a TCI state applied to a DL transmission beam of the intermediate node are independently controlled by the base station. ### Claim 9 (depends on 7) The method according to claim 7, further comprising: receiving hybrid automatic repeat request (HARQ)-acknowledgment (ACK) for the first control information from the terminal. ### Claim 10 An intermediate node for relaying communication between a base station and a terminal, comprising a processor, wherein the processor causes the intermediate node to perform: receiving, from the base station, first control information including on/off indication and a transmission configuration indication (TCI) state to be applied by the intermediate node, which is used to relay the communication between the base station and the terminal; determining whether to relay the communication between the base station and the terminal according to the on/off indication; relaying the communication between the base station and the terminal when the on/off indicates ‘on’; and receiving second control information from the base station, wherein the second control information is received after receiving the first control information, and when the first control information and the second control information are to be applied to a same time period, an information element of the second control information is selected to be applied to the same time period and the information element is at least one of the on/off indication or the TCI state, wherein the relaying of the communication comprises: transmitting a first signal received from the base station to the terminal; transmitting a second signal received from the terminal to the base station; transmitting a third signal generated by the intermediate node to the base station; and transmitting, to the base station, a fourth signal obtained by multiplexing a fifth signal generated by the intermediate node and a sixth signal received from the terminal. ### Claim 11 (depends on 10) The intermediate node according to claim 10, wherein the on/off indication is classified into a downlink (DL) on/off indication and an uplink (UL) on/off indication; when the DL on/off indication indicates ‘DL on’, the intermediate node performs DL communication for the terminal; and when the UL on/off indication indicates ‘UL on’, the intermediate node perform UL communication for the base station; and when the UL on/off indication indicates ‘UL off’. ### Claim 12 (depends on 10) The intermediate node according to claim 10, wherein the processor causes the intermediate node to perform: transmitting hybrid automatic repeat request (HARQ)-acknowledgment (ACK) for the first control information to the base station.