# US 10,873,956 B2 · Method and NB wireless device for determining whether or not to transmit SR > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,873,956 B2 - Document ID: US10873956B2 - Status: Granted - Kind: B2 - Application number: 16/381,699 - Filed: 2019-04-11 - Published: 2019-08-01 - Granted: 2020-12-22 - Earliest claimed: 2017-03-24 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Seunggye Hwang; Joonkui Ahn; Suckchel Yang; Changhwan Park; Seonwook Kim - Web page: https://patentgrep.com/patent/US10873956B2 ## CPC - H04L 27/26035: {Maintenance of orthogonality, e.g. for signals exchanged between cells or users, or by using covering codes or sequences (using different training sequence per antenna H04B7/0684; code allocation H04J13/16)} - 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 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ] - H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)} - H04L 1/1896: {ARQ related signaling} - H04L 5/00: Arrangements affording multiple use of the transmission path - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 27/26: Systems using multi-frequency codes (H04L27/32 takes precedence) - H04L 27/2602: {Signal structure} - H04L 27/36: Modulator circuits; Transmitter circuits - H04W 72/0466: {the resource being a scrambling code} - H04W 72/12: Wireless traffic scheduling - 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)} - H04L 27/2603: {Signal structure ensuring backward compatibility with legacy system} - 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 One disclosure of the present application provides a method for a narrowband (NB) wireless device to determine whether or not to transmit a scheduling request (SR). The method may comprise a step of determining whether or not to transmit an SR by using a resource for the transmission of a hybrid automatic retransmit request (HARQ) acknowledgement/negative acknowledgement (ACK/NACK) signal. The step of determination may be performed if one or more HARQ processes are run. The resource for the HARQ ACK/NACK signal may include a narrowband physical uplink shared channel (NPUSCH). ## Claims ### Claim 1 A method of transmitting a scheduling request (SR), the method performed by a wireless device and comprising: receiving a higher layer signal including information regarding a plurality of narrowband physical random access channel (NPRACH) resources, wherein the plurality of the NPRACH resources include a first NPRACH resource for a scheduling request (SR); and transmitting a narrowband random access preamble in the first NPRACH resource of the received information, based on (i) that the wireless device needs to transmit the SR and (ii) that the wireless device need not transmit a narrowband physical uplink shared channel (NPUSCH) signal including hybrid automatic repeat request (HARQ) acknowledgment (ACK)/not-acknowledgment (NACK) information. ### Claim 2 (depends on 1) The method of claim 1, wherein the first NPRACH resource includes a frequency resource, wherein the frequency resource includes a subcarrier. ### Claim 3 (depends on 1) The method of claim 1, wherein the narrowband random access preamble is not transmitted in a time resource overlapping a downlink channel. ### Claim 4 (depends on 1) The method of claim 1, further comprising: receiving configuration information regarding a SR transmission without the HARQ ACK/NACK information. ### Claim 5 (depends on 1) The method of claim 1, further comprising: transmitting the SR via a signal for the NPUSCH, based on that the HARQ ACK/NACK information needs to be transmitted. ### Claim 6 (depends on 1) The method of claim 1, further comprising: determining a power for transmitting a narrowband random access preamble, based on that the SR needs to be transmitted. ### Claim 7 A wireless device configured to transmit a scheduling request (SR), the wireless device comprising: a transceiver; at least one processor; and at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed by the at least one processor, perform operations comprising: receiving, through the transceiver, a higher layer signal including information regarding a plurality of narrowband physical random access channel (NPRACH) resources, wherein the plurality of the NPRACH resources include a first NPRACH resource for a scheduling request (SR); and transmitting, through the transceiver, a narrowband random access preamble in the first NPRACH resource of the received information, based on (i) that the wireless device needs to transmit the SR and (ii) that the wireless device need not transmit a narrowband physical uplink shared channel (NPUSCH) signal including hybrid automatic repeat request (HARQ) acknowledgment (ACK)/not-acknowledgment (NACK) information. ### Claim 8 (depends on 7) The wireless device of claim 7, wherein the first NPRACH resource includes a frequency resource, wherein the frequency resource includes a subcarrier. ### Claim 9 (depends on 7) The wireless device of claim 7, wherein the narrowband random access preamble is not transmitted in a time resource overlapping a downlink channel. ### Claim 10 (depends on 7) The wireless device of claim 7, wherein the operations further comprise: receiving, through the transceiver, configuration information regarding a SR transmission without the HARQ ACK/NACK information. ### Claim 11 (depends on 7) The wireless device of claim 7, wherein the operations further comprise: transmitting, through the transceiver, the SR via a signal for the NPUSCH, based on that the HARQ ACK/NACK information needs to be transmitted. ### Claim 12 (depends on 7) The wireless device of claim 7, wherein the operations further comprise: determining a power for transmitting a narrowband random access preamble, based on that the SR needs to be transmitted. ### Claim 13 A base station configured to receive a scheduling request (SR), the base station comprising: a transceiver; at least one processor; and at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed by the at least one processor, perform operations comprising: transmitting, through the transceiver, a higher layer signal including information regarding a plurality of narrowband physical random access channel (NPRACH) resources, wherein the plurality of the NPRACH resources include a first NPRACH resource for a scheduling request (SR); and receiving, through the transceiver, a narrowband random access preamble in the first NPRACH resource of the information from a wireless device based on (i) that the wireless device needs to transmit the SR and (ii) that the wireless device need not transmit a narrowband physical uplink shared channel (NPUSCH) signal including hybrid automatic repeat request (HARQ) acknowledgment (ACK)/not-acknowledgment (NACK) information. ### Claim 14 (depends on 13) The base station of claim 13, wherein the first NPRACH resource includes a frequency resource, wherein the frequency resource includes a subcarrier. ### Claim 15 (depends on 13) The base station of claim 13, wherein the narrowband random access preamble is not received in a time resource overlapping a downlink channel. ### Claim 16 (depends on 13) The base station of claim 13, wherein the operations further comprise: transmitting, through the transceiver, configuration information regarding a SR transmission without the HARQ ACK/NACK information. ### Claim 17 (depends on 13) The base station of claim 13, wherein the operations further comprise: receiving, through the transceiver, the SR via a signal for the NPUSCH, based on that the HARQ ACK/NACK information needs to be transmitted.