# US 2019/0173633 A1 · Method for transmitting and receiving data in wireless communication system supporting short transmission time interval 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 2019/0173633 A1 - Document ID: US20190173633A1 - Status: Published application - Kind: A1 - Application number: 16/322,269 - Filed: 2017-08-14 - Published: 2019-06-06 - Earliest claimed: 2016-08-12 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Kyuhwan KWAK; Yunjung YI; Daesung HWANG; Seungmin LEE; Hyunho LEE - Web page: https://patentgrep.com/patent/US20190173633A1 ## CPC - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - H04L 1/1893: {Physical mapping arrangements (physical resource mapping in general H04L5/00)} - H04L 1/1896: {ARQ related signaling} - H04L 5/00: Arrangements affording multiple use of the transmission path - H04L 5/0064: {Rate requirement of the data, e.g. scalable bandwidth, data priority} - H04L 5/0082: {at predetermined intervals} - H04L 5/0092: {Indication of how the channel is divided} - H04L 5/14: Two-way operation using the same type of signal, i.e. duplex - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/1268: of uplink data flows - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 5/0023: {Time-frequency-space} - H04L 5/16: Half-duplex systems; Simplex/duplex switching; Transmission of break signals {non-automatically inverting the direction of transmission} - H04W 74/002: {Transmission of channel access control information} - 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 Disclosed are a method for transmitting and receiving data in a wireless communication system supporting a short transmission time interval (TTI) and an apparatus therefor. Specifically, the method may comprise the steps of: receiving a downlink control channel for which a first TTI is configured; and transmitting a specific uplink channel for which a second TTI is configured, on the basis of the received downlink control channel, wherein the first TTI and the second TTI are configured to have different lengths, the specific uplink channel is transmitted through a subframe after a specific processing time from the end point of a resource region allocated to the downlink control channel, and the specific processing time is set according to at least one of a first processing time for the downlink control channel and a second processing time for the specific uplink control channel. ## Claims ### Claim 1 A method of transmitting and receiving data by a user equipment in a wireless communication system supporting a short transmission time interval (TTI), the method comprising: receiving a downlink control channel configured as a first TTI; and transmitting a specific uplink channel configured as a second TTI based on the received downlink control channel, wherein the first TTI and the second TTI are configured as TTIs of different lengths, wherein the specific uplink channel is transmitted through a subframe after a specific processing time from timing when a resource region allocated to the downlink control channel is terminated, and wherein the specific processing time is configured based on at least one of a first processing time for the downlink control channel or a second processing time for the specific uplink control channel. ### Claim 2 (depends on 1) The method of claim 1, wherein the first processing time is configured based on the first TTI, and wherein the second processing time is configured based on the second TTI. ### Claim 3 (depends on 2) The method of claim 2, wherein the first processing time is configured as a multiple of a length unit of a downlink subframe configured according to the first TTI, and the second processing time is configured as a multiple of a length unit of an uplink subframe configured according to the second TTI. ### Claim 4 (depends on 3) The method of claim 3, wherein the first processing time and the second processing time is configured in a symbol unit configuring the downlink subframe and the uplink subframe. ### Claim 5 (depends on 2) The method of claim 2, further comprising: receiving configuration information related to at least one of the first processing time or the second processing time, through higher layer signaling. ### Claim 6 (depends on 2) The method of claim 2, wherein the subframe is a first uplink subframe generated after the specific processing time from the timing when the resource region allocated to the downlink control channel is terminated. ### Claim 7 (depends on 2) The method of claim 2, wherein the specific processing time is configured as a sum of the first processing time and the second processing time. ### Claim 8 (depends on 2) The method of claim 2, wherein when a length of the first TTI is longer than a length of the second TTI, the specific processing time is configured as a multiple of the first processing time. ### Claim 9 (depends on 2) The method of claim 2, wherein when a length of the second TTI is longer than a length of the first TTI, the specific processing time is configured as a multiple of the second processing time. ### Claim 10 (depends on 2) The method of claim 2, wherein when a length of the first TTI is smaller than a length of the second TTI, the specific processing time is configured as a sum of a multiple of the first processing time and a third processing time, and wherein the third processing time is a processing time for uplink control information. ### Claim 11 (depends on 2) The method of claim 2, wherein the first processing time includes a time necessary to receive and decode the downlink control channel, and wherein the second processing time includes a time necessary to encode the specific uplink control channel and a time corresponding to a margin of timing advance. ### Claim 12 (depends on 2) The method of claim 2, wherein the specific uplink channel comprises an uplink data channel for transmission or retransmission of uplink data. ### Claim 13 A user equipment transmitting and receiving data in a wireless communication system supporting a short transmission time interval (TTI), the user equipment comprising: a transceiver unit configured to transmit and receive radio signals; and a processor functionally connected to the transceiver unit, wherein the processor is configured to: receive a downlink control channel configured as a first TTI, and transmit a specific uplink channel configured as a second TTI based on the received downlink control channel, wherein the first TTI and the second TTI are configured as TTIs of different lengths, wherein the specific uplink channel is transmitted through a subframe after a specific processing time from timing when a resource region allocated to the downlink control channel is terminated, and wherein the specific processing time is configured based on at least one of a first processing time for the downlink control channel or a second processing time for the specific uplink control channel. ### Claim 14 (depends on 12) The user equipment of claim 12, wherein the first processing time is configured based on the first TTI, and wherein the second processing time is configured based on the second TTI. ### Claim 15 (depends on 13) The user equipment of claim 13, wherein the processor is configured to receive configuration information related to at least one of the first processing time or the second processing time, through higher layer signaling.