# US 2019/0174530 A1 · Method for transmitting and receiving data 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 2019/0174530 A1 - Document ID: US20190174530A1 - Status: Published application - Kind: A1 - Application number: 16/314,564 - Filed: 2017-07-03 - Published: 2019-06-06 - Earliest claimed: 2016-07-01 - Applicants: LG Electronics Inc. - Inventors: Myoungseob KIM; Hanbyul SEO; Seungmin LEE; Hyukjin CHAE - Web page: https://patentgrep.com/patent/US20190174530A1 ## CPC - H04W 76/14: Direct-mode setup - H04L 1/0003: {by switching between different modulation schemes} - H04L 1/0009: {by adapting the channel coding (H04L1/1812 takes precedence)} - H04L 1/0025: {Transmission of mode-switching indication} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/0064: {Rate requirement of the data, e.g. scalable bandwidth, data priority} - H04L 5/0078: {Timing of allocation} - H04W 4/40: for vehicles, e.g. vehicle-to-pedestrians [V2P] - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/12: Wireless traffic scheduling - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 72/1263: Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows - 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 disclosure proposes a method for transmitting and receiving data through sidelink in a wireless communication system supporting Vehicle-to-Everything (V2X) communication. Particularly, the method performed by a first User Equipment includes receiving, from a base station, Downlink Control Information (DCI) including information related to a transmission of first control information; transmitting, to the second User Equipment, the first control information based on the received DCI; and transmitting, to the second User Equipment, one or more data through the sidelink. ## Claims ### Claim 1 A method for transmitting data through sidelink in a wireless communication system supporting Vehicle-to-Everything (V2X) communication, the method performed by a first User Equipment comprising: receiving, from a base station, Downlink Control Information (DCI) including information related to a transmission of first control information, wherein the first control information is used for scheduling data transmitted to a second User Equipment; transmitting, to the second User Equipment, the first control information based on the received DCI; and transmitting, to the second User Equipment, one or more data through the sidelink, wherein the DCI is transmitted in subframe #n, wherein the first control information is transmitted in subframe #n+k or in a specific sidelink subframe generated after the subframe #n+k, and wherein the DCI includes second control information indicating a timing gap between a first data transmission and a second data transmission and wherein the second control information is a timing gap field. ### Claim 2 (depends on 1) The method of claim 1, wherein the k is 4. ### Claim 3 (depends on 1) The method of claim 1, wherein the first control information and the one or more data are transmitted to the second User Equipment on an identical timing. ### Claim 4 (depends on 3) The method of claim 3, wherein the identical timing is an identical subframe. ### Claim 5 (depends on 1) The method of claim 1, wherein the first data transmission is an initial transmission of data, and wherein the second data transmission is a retransmission of data. ### Claim 6 (depends on 1) The method of claim 1, wherein the first control information is a Scheduling Assignment (SA). ### Claim 7 (canceled) ### Claim 8 (depends on 1) The method of claim 1, wherein the first control information includes the second control information. ### Claim 9 (depends on 1) The method of claim 1, wherein the specific sidelink subframe includes initial sidelink subframes generated after the subframe #n+k. ### Claim 10 (depends on 1) The method of claim 1, when resource allocations for the one or more data are scheduled simultaneously by Dynamic Scheduling and Semi-Persistent Scheduling (SPS), wherein either one of the Dynamic Scheduling and the SPS is applied based on a specific criterion. ### Claim 11 (depends on 10) The method of claim 10, wherein the specific criterion includes at least one of a length of transmission period of the SPS or an importance of transmission data. ### Claim 12 A first User Equipment for transmitting data through sidelink in a wireless communication system supporting Vehicle-to-Everything (V2X) communication, the first User Equipment comprising: a Radio Frequency (RF) unit configured to transmit and receive a radio signal; and a processor functionally connected with the RF unit, wherein the processor is configured to perform: receiving, from a base station, Downlink Control Information (DCI) including information related to a transmission of first control information, wherein the first control information is used for scheduling data transmitted to a second User Equipment; transmitting, to the second User Equipment, the first control information based on the received DCI; and transmitting, to the second User Equipment, one or more data through the sidelink, wherein the DCI is transmitted in subframe #n, wherein the first control information is transmitted in subframe #n+k or in a specific sidelink subframe generated after the subframe #n+k, wherein the DCI includes second control information indicating a timing gap between a first data transmission and a second data transmission, and wherein the second control information is a timing gap field. ### Claim 13 (depends on 12) The first User Equipment of claim 12, wherein the k is 4. ### Claim 14 (depends on 12) The first User Equipment of claim 12, wherein the first control information and the one or more data are transmitted to the second User Equipment on an identical timing. ### Claim 15 (depends on 14) The first User Equipment of claim 14, wherein the identical timing is an identical subframe. ### Claim 16 (depends on 12) The first User Equipment of claim 12, wherein the first data transmission is an initial transmission of data, and wherein the second data transmission is a retransmission of data. ### Claim 17 (canceled) ### Claim 18 (depends on 12) The first User Equipment of claim 12, wherein the first control information includes the second control information. ### Claim 19 (depends on 12) The first User Equipment of claim 12, wherein the specific sidelink subframe includes initial sidelink subframes generated after the subframe #n+k.