# US 10,375,709 B2 · Method and LC device for transmitting scheduling request > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,375,709 B2 - Document ID: US10375709B2 - Status: Granted - Kind: B2 - Application number: 15/571,498 - Filed: 2016-05-04 - Published: 2018-05-17 - Granted: 2019-08-06 - Earliest claimed: 2015-05-08 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Daesung Hwang; Yunjung Yi; Hanbyul Seo - Web page: https://patentgrep.com/patent/US10375709B2 ## CPC - H04W 72/12: Wireless traffic scheduling - H04L 1/08: by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)} - H04L 1/1671: {the supervisory signal being transmitted together with control information} - H04L 1/1685: {the supervisory signal being transmitted in response to a specific request, e.g. to a polling signal} - H04L 1/18: Automatic repetition systems, e.g. Van Duuren systems - H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)} - H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - 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 present description provides a method for transmitting a scheduling request (SR) in a low-capability (LC) or low-cost (LC) device. The method can comprise a step for receiving an upper layer signal comprising an SR subframe offset and an SR transmission period. The upper layer signal can further comprise information about the number of repetitions. Also, the method can comprise the steps of: determining, on the basis of the SR transmission period and SR subframe offset, a subframe on which the SR is to be transmitted; determining the number of repeated transmissions of the SR on the basis of the information; and transmitting the SR on the determined subframe. The SR can repeatedly be transmitted on a plurality of subframes that begin from the determined subframe. ## Claims ### Claim 1 A method for transmitting a scheduling request (SR), the method performed by a device configured for a coverage enhancement and comprising: receiving a higher layer signal including a SR transmission periodicity and a SR subframe offset, the higher layer signal further including information on a repetition number; determining a first subframe to start a transmission of the SR based on the SR transmission periodicity and the SR subframe offset; determining a number of subframes used for repeatedly transmitting the SR based on the information; and transmitting the SR on the determined first subframe, wherein the SR is repeatedly transmitted over a plurality of consecutive subframes starting from the determined first subframe by the determined number of subframes. ### Claim 2 (depends on 1) The method of claim 1, wherein if transmission of hybrid automatic repeat request (HARQ) acknowledgement (ACK)/non-acknowledgement (NACK) is required after the SR is triggered, the SR is transmitted using a Physical Uplink Control Channel (PUCCH) format 1B, and a Most Significant Bit (MSB) of the SR is set to 0, and when the SR is a positive SR, a Least Significant Bit (LSB) of the SR is set to 1. ### Claim 3 (depends on 1) The method of claim 1, wherein an MSB of the SR is set according to a value of the HARQ ACK/NACK from a transmission time point of the HARQ ACK/NACK, when transmission of HARQ ACK/NACK is required, after the SR is triggered. ### Claim 4 (depends on 1) The method of claim 1, wherein the SR is together transmitted only when HARQ ACK/NACK is transmitted. ### Claim 5 (depends on 4) The method of claim 4, wherein the SR is joint encoded and transmitted with the HARQ ACK/NACK. ### Claim 6 (depends on 1) The method of claim 1, wherein the SR is together transmitted only when periodic Channel State Information (CSI) is transmitted. ### Claim 7 (depends on 6) The method of claim 6, wherein the SR is joint encoded and transmitted with the periodic CSI. ### Claim 8 A device for transmitting a scheduling request (SR), the device configured for a coverage enhancement and comprising: a transceiver configured to receive a higher layer signal including a SR transmission periodicity and a SR subframe offset, the higher layer signal further including information on a repetition number; and a processor configured to determine a first subframe to start a transmission of the SR based on the SR transmission periodicity and the SR subframe offset; determine a number of subframes used for repeatedly transmitting the SR based on the information; and control the transceiver to transmit the SR on the determined first subframe, wherein the SR is repeatedly transmitted over a plurality of consecutive subframes starting from the determined first subframe by the determined number of subframes. ### Claim 9 (depends on 8) The device of claim 8, wherein if transmission of hybrid automatic repeat request (HARQ) acknowledgement (ACK)/non-acknowledgement (NACK) is required after the SR is triggered, the SR is transmitted using a Physical Uplink Control Channel (PUCCH) format 1B, and a Most Significant Bit (MSB) of the SR is set to 0, and when the SR is a positive SR, a Least Significant Bit (LSB) of the SR is set to 1. ### Claim 10 (depends on 8) The device of claim 8, wherein an MSB of the SR is set according to a value of the HARQ ACK/NACK from a time point in which the HARQ ACK/NACK is transmitted, when transmission of HARQ ACK/NACK is required, after the SR is triggered.