# US 2019/0174525 A1 · Method for transmitting scheduling request in wireless communication system, and apparatus therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0174525 A1 - Document ID: US20190174525A1 - Status: Published application - Kind: A1 - Application number: 16/323,139 - Filed: 2017-08-07 - Published: 2019-06-06 - Earliest claimed: 2016-08-05 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Kyuhwan KWAK; Suckchel YANG; Daesung HWANG; Seonwook KIM - Web page: https://patentgrep.com/patent/US20190174525A1 ## CPC - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04L 5/00: Arrangements affording multiple use of the transmission path - H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)} - H04L 25/0224: {using sounding signals} - H04L 27/2607: {Cyclic extensions} - H04L 27/2646: {using feedback from receiver for adjusting OFDM transmission parameters, e.g. transmission timing or guard interval length} - H04W 72/1268: of uplink data flows - H04B 1/713: using frequency hopping - H04J 13/0062: {Zadoff-Chu} - H04J 2011/0006: {with CDM/CDMA} - H04J 2011/0016: {with FDM/FDMA and TDM/TDMA} - H04L 27/2613: {Structure of the reference 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) - H04B: TRANSMISSION - H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S) ## Abstract The present invention discloses a method for transmitting a scheduling request and a device therefor in a wireless communication system. More specifically, the method performed by a user equipment (UE) includes receiving, from a base station, sounding reference signal (SRS) configuration information related to SRS transmission, and transmitting, to the base station, at least one SRS indicating a specific SR of a plurality of SRs based on the SRS configuration information. The SRS configuration information includes at least one of cyclic shift (CS) index information of a sequence related to the SRS transmission, comb information representing a comb structure in which the sequence is transmitted, or hopping bandwidth information related to the SRS transmission. The specific SR is indicated according to at least one of an CS index selected based on the CS index information, a comb index selected based on the comb information, or a hopping pattern based on the hopping bandwidth information. ## Claims ### Claim 1 A method for transmitting, by a user equipment (UE), a scheduling request (SR) in a wireless communication system, the method comprising: receiving, from a base station, sounding reference signal (SRS) configuration information related to SRS transmission; and transmitting, to the base station, at least one SRS related to a specific SR of a plurality of SRs based on the SRS configuration information, wherein the SRS configuration information includes at least one of cyclic shift (CS) index information of a sequence related to the SRS transmission, comb information representing a comb structure in which the sequence is transmitted, or hopping bandwidth information related to the SRS transmission, and wherein the specific SR is indicated according to at least one of an CS index selected based on the CS index information, a comb index selected based on the comb information, or a hopping pattern based on the hopping bandwidth information. ### Claim 2 (depends on 1) The method of claim 1, wherein the plurality of SRs includes at least one of a SR related to resource allocation for data or a SR for requesting a scheduling related to a beam. ### Claim 3 (depends on 2) The method of claim 2, wherein the SR for requesting the scheduling related to the beam includes at least one of a SR for requesting a beam change or a SR for requesting an initiation of a reference signal related to beam refinement. ### Claim 4 (depends on 2) The method of claim 2, wherein the CS index information includes at least one of a first CS index group or a second CS index group, wherein the first CS index group represents the SR related to the resource allocation for the data, and wherein the second CS index group represents the SR for requesting the scheduling related to the beam. ### Claim 5 (depends on 4) The method of claim 4, wherein the second CS index group includes at least one of a first CS index subgroup or a second CS index subgroup, wherein the first CS index subgroup represents a SR for requesting a beam change, and wherein the second CS index subgroup represents a SR for requesting an initiation of a reference signal related to beam refinement. ### Claim 6 (depends on 2) The method of claim 2, wherein the comb information includes a first comb index and a second comb index, wherein the first comb index represents the SR related to the resource allocation for the data, and wherein the second comb index represents the SR for requesting the scheduling related to the beam. ### Claim 7 (depends on 6) The method of claim 6, wherein the first comb index represents an even comb structure consisting of indexes of even-numbered subcarriers, and wherein the second comb index represents an odd comb structure consisting of indexes of odd-numbered subcarriers. ### Claim 8 (depends on 6) The method of claim 6, wherein when the SR related to the resource allocation for the data includes at least one of a first SR or a second SR, a first CS index and a second CS index among CS indexes corresponding to the first comb index represent the first SR and the second SR, respectively, and wherein when the SR for requesting the scheduling related to the beam includes at least one of a third SR or a fourth SR, a third CS index and a fourth CS index among CS indexes corresponding to the second comb index represent the third SR and the fourth SR, respectively. ### Claim 9 (depends on 2) The method of claim 2, wherein the hopping bandwidth information includes information about one or more subbands included in a bandwidth allocated for the SRS transmission, and wherein the hopping pattern represents an order of the one or more subbands on which the at least one SRS is transmitted. ### Claim 10 (depends on 9) The method of claim 9, wherein the hopping pattern includes at least one of a first hopping pattern group or a second hopping pattern group that are determined according to the order, wherein the first hopping pattern group represents the SR related to the resource allocation for the data, and wherein the second hopping pattern group represents the SR for requesting the scheduling related to the beam. ### Claim 11 (depends on 2) The method of claim 2, wherein the sequence includes at least one of a Zadoff-Chu sequence or a pseudo-random sequence. ### Claim 12 (depends on 2) The method of claim 2, wherein the SRS configuration information is received via at least one of higher layer signaling or downlink control information. ### Claim 13 A user equipment (UE) for transmitting a scheduling request (SR) in a wireless communication system, the UE comprising: a transceiver configured to transmit and receive a radio signal; and a processor functionally coupled to the transceiver, wherein the processor is controlled to: receive, from a base station, sounding reference signal (SRS) configuration information related to SRS transmission; and transmit, to the base station, at least one SRS related to a specific SR of a plurality of SRs based on the SRS configuration information, wherein the SRS configuration information includes at least one of cyclic shift (CS) index information of a sequence related to the SRS transmission, comb information representing a comb structure in which the sequence is transmitted, or hopping bandwidth information related to the SRS transmission, and wherein the specific SR is indicated according to at least one of an CS index selected based on the CS index information, a comb index selected based on the comb information, or a hopping pattern based on the hopping bandwidth information. ### Claim 14 (depends on 13) The UE of claim 13, wherein the plurality of SRs includes at least one of a SR related to resource allocation for data or a SR for requesting a scheduling related to a beam.