US 12,137,479 B2
Method and apparatus for coverage enhancement of terminal in communication system
Jung Hoon Lee, Daejeon (KR); Jae Heung Kim, Daejeon (KR); and Sung Cheol Chang, Daejeon (KR)
Assigned to Electronics and Telecommunications Research Institute, Daejeon (KR)
Filed by ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)
Filed on Nov. 30, 2021, as Appl. No. 17/538,907.
Claims priority of application No. 10-2020-0167014 (KR), filed on Dec. 2, 2020; application No. 10-2021-0017859 (KR), filed on Feb. 8, 2021; application No. 10-2021-0122740 (KR), filed on Sep. 14, 2021; and application No. 10-2021-0161055 (KR), filed on Nov. 22, 2021.
Prior Publication US 2022/0174745 A1, Jun. 2, 2022
Int. Cl. H04W 74/0833 (2024.01)
CPC H04W 74/0833 (2013.01) 10 Claims
OG exemplary drawing
 
1. An operation method of a base station in a communication system, the operation method comprising:
generating first information of a first physical random access channel (PRACH) preamble for a normal terminal;
generating second information of a second PRACH preamble for a reduced capability (RedCap) terminal;
transmitting random access channel (RACH) configuration information including the first information and the second information; and
performing a random access procedure with a first terminal,
wherein the performing of the random access procedure comprises:
receiving a Msg1 based on at least one of the first information or the second information from the first terminal;
transmitting a Msg2 to the first terminal in response to the Msg1; and
receiving a Msg3 including information used for indicating a terminal type of the first terminal from the first terminal, and
wherein the terminal type of the first terminal is identified as the normal terminal or the RedCap terminal based on the information included in the Msg3.