US 11,930,534 B2
Method and device for low latency communication in communication system
Eunkyung Kim, Daejeon (KR); Tae Joong Kim, Daejeon (KR); Hyun Seo Park, Daejeon (KR); An Seok Lee, Daejeon (KR); Yu Ro Lee, Daejeon (KR); and Hyun Lee, Daejeon (KR)
Assigned to Electronics and Telecommunications Research Institute, Daejeon (KR)
Appl. No. 16/963,747
Filed by Electronics and Telecommunications Research Institute, Daejeon (KR)
PCT Filed Apr. 10, 2019, PCT No. PCT/KR2019/004272
§ 371(c)(1), (2) Date Jul. 21, 2020,
PCT Pub. No. WO2019/199051, PCT Pub. Date Oct. 17, 2019.
Claims priority of application No. 10-2018-0042119 (KR), filed on Apr. 11, 2018; application No. 10-2018-0054456 (KR), filed on May 11, 2018; application No. 10-2018-0147844 (KR), filed on Nov. 26, 2018; application No. 10-2019-0003301 (KR), filed on Jan. 10, 2019; application No. 10-2019-0014534 (KR), filed on Feb. 7, 2019; application No. 10-2019-0020692 (KR), filed on Feb. 21, 2019; and application No. 10-2019-0033210 (KR), filed on Mar. 22, 2019.
Prior Publication US 2021/0100036 A1, Apr. 1, 2021
Int. Cl. H04W 74/08 (2009.01); H04L 1/18 (2023.01)
CPC H04W 74/0833 (2013.01) [H04L 1/18 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An operation method performed by a terminal in a communication system, the operation method comprising:
transmitting a random access message to a base station;
receiving, from the base station, a random access response (RAR) in response to the random access message within a window;
determining that a random access procedure is successfully performed when the RAR includes a random access preamble identifier (RAPID) of the random access message without backoff related information which is used for retransmitting the random access message;
determining a transmission timing of a hybrid automatic repeat request (HARQ) response in response to the RAR based on information indicating physical resources used for transmitting the HARQ response included in the RAR and a preconfigured value which is determined by the terminal; and
transmitting, to the base station, the HARQ response in response to the RAR in a physical uplink control channel (PUCCH) at the transmission timing,
wherein the HARQ response in response to the RAR is transmitted when the RAR includes the RAPID without an uplink grant.