US 11,791,881 B2
Random access method and apparatus using superposed preambles
Gi Yoon Park, Daejeon (KR); Seok Ki Kim, Daejeon (KR); Ok Sun Park, Daejeon (KR); Eun Jeong Shin, Daejeon (KR); Jae Sheung Shin, Daejeon (KR); and Jin Ho Choi, Melbourne (AU)
Assigned to Electronics and Telecommunications Research Institute, Daejeon (KR)
Filed by Electronics and Telecommunications Research Institute
Filed on Aug. 18, 2021, as Appl. No. 17/405,133.
Claims priority of application No. 10-2020-0123097 (KR), filed on Sep. 23, 2020; and application No. 10-2021-0095021 (KR), filed on Jul. 20, 2021.
Prior Publication US 2022/0094413 A1, Mar. 24, 2022
Int. Cl. H04B 7/06 (2006.01); H04W 74/08 (2009.01); H04W 74/00 (2009.01)
CPC H04B 7/0634 (2013.01) [H04W 74/008 (2013.01); H04W 74/0841 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An operation method of a terminal in a communication system, the operation method comprising:
receiving, from a base station, basis preamble information and linear combination information;
generating a superposed preamble by using the basis preamble information and the linear combination information;
transmitting, to the base station, a first message including the generated superposed preamble; and
receiving, from the base station, a second message that is a response signal for the first message,
wherein the superposed preamble is generated as a linear combination of basis preambles indicated by the basis preamble information.