# US 10,873,964 B2 · Method and apparatus for transmitting or receiving uplink signal for terminal supporting multiple TTIs, multiple subcarrier spacings, or multiple processing times in wireless communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,873,964 B2 - Document ID: US10873964B2 - Status: Granted - Kind: B2 - Application number: 16/065,705 - Filed: 2018-03-09 - Published: 2020-01-02 - Granted: 2020-12-22 - Earliest claimed: 2017-03-23 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Hyunho Lee; Daesung Hwang; Yunjung Yi - Web page: https://patentgrep.com/patent/US10873964B2 ## CPC - H04L 1/1671: {the supervisory signal being transmitted together with control information} - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ] - H04L 1/1822: involving configuration of automatic repeat request [ARQ] with parallel processes - H04L 1/1854: {Scheduling and prioritising arrangements} - H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)} - H04L 1/1864: {ARQ related signaling (H04L1/1607 takes precedence)} - H04L 5/00: Arrangements affording multiple use of the transmission path - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04L 5/02: Channels characterised by the type of signal - H04W 28/0278: {using buffer status reports (dynamic wireless traffic scheduling definition H04W72/12)} - H04W 72/0446: Resources in time domain, e.g. slots or frames - 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 of transmitting a scheduling request (SR) for a user equipment (UE) for supporting a plurality of transmission time interval (TTI) lengths in a wireless communication system is performed by the UE and includes receiving downlink data, and transmitting hybrid automatic retransmission request-acknowledgement/non-acknowledgement (HARQ-ACK) in a first physical uplink control channel (PUCCH) with a first TTI length for transmitting HARQ-ACK corresponding to the downlink data when transmission timings of the first PUCCH and a second PUCCH for transmitting SR overlap with each other, wherein, when the first PUCCH includes a smaller number of symbols than the second PUCCH and the first PUCCH does not include an effective SR resource, the SR is not transmitted. ## Claims ### Claim 1 A method of transmitting control information for a terminal supporting transmission time intervals (TTIs) of different lengths in a wireless communication system, the method performed by the terminal and comprising: in a state in which (i) a scheduling request (SR) is prepared as part of a transmission of a first TTI-based physical uplink control channel (PUCCH), and (ii) the first TTI-based PUCCH overlaps in time with a second TTI-based PUCCH, where a number of symbols in the second TTI is less than a number of symbols in the first TTI: dropping the transmission of the first TTI-based PUCCH; determining whether to transmit the SR on the second TTI-based PUCCH based on whether the second TTI-based PUCCH coincides with a second TTI-based SR transmission instance; and based on the second TTI-based PUCCH not coinciding with the second TTI-based SR transmission instance, not transmitting the SR on the second TTI-based PUCCH. ### Claim 2 (depends on 1) The method according to claim 1, wherein in the state in which the first TTI-based PUCCH overlaps in time with the second TTI-based PUCCH and based on the second TTI-based PUCCH coinciding with the second TTI-based SR transmission instance, the SR is transmitted on the second TTI-based PUCCH. ### Claim 3 (depends on 1) The method according to claim 1, wherein the SR comprises a request or a resource configuration request for uplink transmission that does not require uplink grant. ### Claim 4 (depends on 3) The method according to claim 3, wherein the SR is represented by a plurality of bits; and wherein each state represented by the plurality of bits is linked with a hybrid-automatic-repeat-request (HARQ) process number associated with the uplink transmission. ### Claim 5 (depends on 3) The method according to claim 3, wherein the SR is represented by a plurality of bits; and wherein a HARQ process number associated with the uplink transmission is determined according to a combination of the plurality of bits and a resource for transmitting the uplink transmission. ### Claim 6 (depends on 1) The method according to claim 1, further comprising: in the state in which the first TTI-based PUCCH overlaps in time with the second TTI-based PUCCH and based on the second TTI-based PUCCH coinciding with the second TTI-based SR transmission instance: bundling and mapping, to a state of a modulation symbol to be transmitted, two types of information of (i) the SR, (ii) HARQ acknowledgment/non-acknowledgment (HARQ-ACK/NACK), and (iii) a buffer state report (BSR). ### Claim 7 (depends on 1) The method according to claim 1, further comprising: in the state in which the first TTI-based PUCCH overlaps in time with the second TTI-based PUCCH and based on the second TTI-based PUCCH coinciding with the second TTI-based SR transmission instance: transmitting, on the second TTI-based PUCCH using a modified PUCCH format or a greater number of resource blocks, (i) the SR, (ii) HARQ-ACK/NACK, and (iii) a BSR. ### Claim 8 (depends on 1) The method according to claim 1, wherein the SR is for a specific service or a specific requirement, and wherein a time interval or a time period of the second TTI-based SR transmission instance is shorter than a time interval or a time period of an SR transmission instance timing for general data traffic. ### Claim 9 A terminal configured to transmit control information in a wireless communication system, the terminal supporting transmission time intervals (TTIs) of different lengths, the terminal comprising: a receiver and a transmitter; 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: in a state in which (i) a scheduling request (SR) is prepared as part of a transmission of a first TTI-based physical uplink control channel (PUCCH), and (ii) the first TTI-based PUCCH overlaps in time with a second TTI-based PUCCH, where a number of symbols in the second TTI is less than a number of symbols in the first TTI: dropping the transmission of the first TTI-based PUCCH; determining whether to transmit the SR on the second TTI-based PUCCH based on whether the second TTI-based PUCCH coincides with a second TTI-based SR transmission instance; and based on the second TTI-based PUCCH not coinciding with the second TTI-based SR transmission instance, not transmitting the SR on the second TTI-based PUCCH. ### Claim 10 (depends on 9) The terminal according to claim 9, wherein in the state in which the first TTI-based PUCCH overlaps in time with the second TTI-based PUCCH and based on the second TTI-based PUCCH coinciding with the second TTI-based SR transmission instance, the SR is transmitted on the second TTI-based PUCCH. ### Claim 11 (depends on 9) The terminal according to claim 9, wherein the SR comprises a request or a resource configuration request for uplink transmission that does not require uplink grant. ### Claim 12 (depends on 11) The terminal according to claim 11, wherein the SR is represented by a plurality of bits; and wherein each state represented by the plurality of bits is linked with a hybrid-automatic-repeat-request (HARQ) process number associated with the uplink transmission. ### Claim 13 (depends on 11) The terminal according to claim 11, wherein the SR is represented by a plurality of bits; and wherein a HARQ process number associated with the uplink transmission is determined according to a combination of the plurality of bits and a resource for transmitting the uplink transmission. ### Claim 14 (depends on 9) The terminal according to claim 9, wherein the operations further comprise: in the state in which the first TTI-based PUCCH overlaps in time with the second TTI-based PUCCH and based on the second TTI-based PUCCH coinciding with the second TTI-based SR transmission instance: bundling and mapping, to a state of a modulation symbol to be transmitted, two types of information of (i) the SR, (ii) HARQ acknowledgment/non-acknowledgment (HARQ-ACK/NACK), and (iii) a buffer state report (BSR). ### Claim 15 (depends on 9) The terminal according to claim 9, wherein the operations further comprise: in the state in which the first TTI-based PUCCH overlaps in time with the second TTI-based PUCCH and based on the second TTI-based PUCCH coinciding with the second TTI-based SR transmission instance: transmitting, on the second TTI-based PUCCH using a modified PUCCH format or a greater number of resource blocks, (i) the SR, (ii) HARQ-ACK/NACK, and (iii) a BSR. ### Claim 16 (depends on 9) The terminal according to claim 9, wherein the SR is for a specific service or a specific requirement, and wherein a time interval or a time period of the second TTI-based SR transmission instance is shorter than a time interval or a time period of an SR transmission instance timing for general data traffic. ### Claim 17 A method of receiving control information that is transmitted by a terminal supporting transmission time intervals (TTIs) of different lengths in a wireless communication system, the method performed by a base station (BS) and comprising: in a state in which (i) a scheduling request (SR) is prepared by the terminal as part of a transmission of a first TTI-based physical uplink control channel (PUCCH), and (ii) the first TTI-based PUCCH overlaps in time with a second TTI-based PUCCH, where a number of symbols in the second TTI is less than a number of symbols in the first TTI: not receiving transmission of the first TTI-based PUCCH; and based on the second TTI-based PUCCH not coinciding with a second TTI-based SR transmission instance, not receiving the SR on the second TTI-based PUCCH. ### Claim 18 (depends on 1) The method according to claim 1, wherein the first TTI-based PUCCH overlaps in time with the second TTI-based PUCCH by completely or partially overlapping. ### Claim 19 (depends on 9) The terminal according to claim 9, wherein the first TTI-based PUCCH overlaps in time with the second TTI-based PUCCH by completely or partially overlapping. ### Claim 20 At least one non-transitory computer-readable storage medium encoded with at least one computer program comprising instructions that, when executed by at least one processor, perform operations of transmitting control information in a terminal supporting transmission time intervals (TTIs) of different lengths, the operations comprising: in a state in which (i) a scheduling request (SR) is prepared as part of a transmission of a first TTI-based physical uplink control channel (PUCCH), and (ii) the first TTI-based PUCCH overlaps in time with a second TTI-based PUCCH, where a number of symbols in the second TTI is less than a number of symbols in the first TTI: dropping the transmission of the first TTI-based PUCCH; determining whether to transmit the SR on the second TTI-based PUCCH based on whether the second TTI-based PUCCH coincides with a second TTI-based SR transmission instance; and based on the second TTI-based PUCCH not coinciding with the second TTI-based SR transmission instance, not transmitting the SR on the second TTI-based PUCCH via a transceiver of the terminal.