# US 2021/0345362 A1 · Method for transmitting and receiving uplink control channel and device therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0345362 A1 - Document ID: US20210345362A1 - Status: Published application - Kind: A1 - Application number: 16/961,579 - Filed: 2019-01-08 - Published: 2021-11-04 - Earliest claimed: 2018-01-12 - Assignees: Electronics and Telecommunications Research Institute - Applicants: Electronics and Telecommunications Research Institute - Inventors: Cheul Soon KIM; Sung Hyun MOON; Jung Hoon LEE - Web page: https://patentgrep.com/patent/US20210345362A1 ## CPC - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 72/569: {of the traffic information} - H04L 5/0012: {Hopping in multicarrier systems} - H04L 5/0064: {Rate requirement of the data, e.g. scalable bandwidth, data priority} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04W 28/02: Traffic management, e.g. flow control or congestion control - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/1268: of uplink data flows - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04W 80/02: Data link layer protocols - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - 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) ## Abstract A method for transmitting an uplink control channel by a terminal may comprise the steps of: receiving, from a base station, information on resources for transmitting a first SR and a second SR; when the symbols of a first uplink control channel including the first SR partially or completely overlap the symbols of a second uplink control channel including the second SR, comparing the priority of the first SR and the priority of the second SR; and when the priority of the second SR is higher than the priority of the first SR, transmitting the second uplink control channel without transmitting some or all of the symbols of the first uplink control channel. ## Claims ### Claim 1 A method for transmitting an uplink control channel, performed in a terminal, the method comprising: receiving, from a base station, information on resources for transmitting a first scheduling request (SR) and a second SR and information on priorities of the first SR and the second SR or information used for deriving the priorities of the first SR and the second SR; comparing the priority of the first SR with the priority of the second SR, when a part or all of symbols of a first uplink control channel including the first SR overlap a part or all of symbols of a second uplink control channel including the second SR; and transmitting the second uplink control channel without transmitting the part or all of the symbols of the first uplink control channel, when the priority of the second SR is higher than the priority of the first SR. ### Claim 2 (depends on 1) The method according to claim 1, wherein the second SR corresponds to a low-latency traffic as compared to a traffic corresponding to the first SR. ### Claim 3 (depends on 1) The method according to claim 1, wherein, when a part or all of the symbols of the first uplink control channel are not transmitted, a medium access control (MAC) layer of the terminal increases a repeated transmission counter for the second SR without increasing a repeated transmission counter for the first SR. ### Claim 4 (depends on 1) The method according to claim 1, further comprising, after the transmitting the second uplink control channel, transmitting the first uplink control channel including the first SR. ### Claim 5 A method for transmitting an uplink control channel, performed in a terminal, the method comprising: receiving, from a base station, information on a period of repeated transmissions and a number of repeated transmissions for a scheduling request (SR); and repeatedly transmitting an uplink control channel including the SR by the number of repeated transmissions according to the period of repeated transmissions, wherein the uplink control channel including the SR is transmitted once or two times in a slot. ### Claim 6 (depends on 5) The method according to claim 5, wherein the period of repeated transmissions corresponds to 7 symbols. ### Claim 7 (depends on 5) The method according to claim 5, wherein the number of repeated transmissions is determined according to a type of a traffic corresponding to the SR or a format of the uplink control channel including the SR. ### Claim 8 (depends on 5) The method according to claim 5, wherein, when the SR is transmitted once in a slot, the uplink control channel including the SR is transmitted in same symbols in each slot. ### Claim 9 (depends on 5) The method according to claim 5, wherein, when the SR is transmitted two times in a slot, the uplink control channel including the SR is transmitted in same symbols in each slot or in different symbols in each slot. ### Claim 10 (depends on 5) The method according to claim 5, wherein, when a part or all of symbols in which the uplink control channel including the SR is transmitted overlap with a part or all of symbols of an uplink control channel including uplink control information other than the SR, the uplink control channel including the SR and the uplink control channel including the uplink control information other than the SR are transmitted as multiplexed. ### Claim 11 (depends on 10) The method according to claim 10, wherein different transmission powers are applied to symbols in which only the uplink control channel including the SR is transmitted, symbols in which the uplink control channel including the SR and the uplink control channel including the uplink control information other than the SR are transmitted as multiplexed, and symbols in which only the uplink control channel including the uplink control information other than the SR is transmitted. ### Claim 12 (depends on 5) The method according to claim 5, wherein, when the uplink control channel including the SR is not transmitted in symbols according to the period of repeated transmissions, a medium access control (MAC) layer of the terminal does not increase a repeated transmission counter for the SR. ### Claim 13 (depends on 5) The method according to claim 5, wherein, when the SR is transmitted two or more times in a slot, the SR is frequency-hopped within a slot or frequency-hopped at a slot boundary according to a configuration through upper layer signaling of the base station. ### Claim 14 (depends on 13) The method according to claim 13, wherein, when the SR is frequency-hopped within a slot, the SR is frequency-hopped at a half-slot boundary. ### Claim 15 A method for transmitting an uplink control channel, performed in a terminal, the method comprising: receiving, from a base station, information on a period of repeated transmissions and a number of repeated transmissions for a first scheduling request (SR) and information on a period of repeated transmissions and a number of repeated transmissions for a second SR; comparing a priority of the first SR with a priority of the second SR, when a part or all of symbols of a first uplink control channel including the first SR according to the period of repeated transmissions for the first SR overlap with a part or all of symbols of a second uplink control channel including the second SR according to the period of repeated transmissions for the second SR; and transmitting the second uplink control channel without transmitting a part or all of the symbols of the first uplink control channel, when the priority of the second SR is higher than the priority of the first SR, wherein each of the uplink control channel including the first SR and the uplink control channel including the second SR is transmitted once or two times in a slot. ### Claim 16 (depends on 15) The method according to claim 15, wherein each of the period of repeated transmissions for the first SR and the period of repeated transmissions for the second SR corresponds to 7 symbols. ### Claim 17 (depends on 15) The method according to claim 15, wherein the number of repeated transmissions for the first SR is determined according to a type of a traffic corresponding to the first SR or a format of the uplink control channel including the first SR, and the number of repeated transmissions for the second SR is determined according to a type of a traffic corresponding to the second SR or a format of the uplink control channel including the second SR. ### Claim 18 (depends on 15) The method according to claim 15, wherein the second SR is an SR corresponding to a low-latency traffic as compared to a traffic corresponding to the first SR. ### Claim 19 (depends on 15) The method according to claim 15, wherein, when the first SR or the second SR is transmitted two or more times in a slot, the first SR or the second SR is frequency-hopped within a slot or frequency-hopped at a slot boundary according to a configuration through upper layer signaling of the base station. ### Claim 20 (depends on 15) The method according to claim 15, wherein, when a part or all of the symbols of the first uplink control channel are not transmitted, a medium access control (MAC) layer of the terminal increases a repeated transmission counter for the second SR without increasing a repeated transmission counter for the first SR.