US 12,171,030 B2
Method for transmitting and receiving urgent information in wireless communication system supporting machine type communication, and device for same
Changhwan Park, Seoul (KR); Jaehyung Kim, Seoul (KR); Hyunjung Choe, Seoul (KR); and Joonkui Ahn, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/627,589
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Jul. 23, 2020, PCT No. PCT/KR2020/009699
§ 371(c)(1), (2) Date Jan. 14, 2022,
PCT Pub. No. WO2021/015565, PCT Pub. Date Jan. 28, 2021.
Claims priority of provisional application 62/877,825, filed on Jul. 23, 2019.
Claims priority of application No. 10-2019-0142133 (KR), filed on Nov. 7, 2019.
Prior Publication US 2022/0377808 A1, Nov. 24, 2022
Int. Cl. H04W 74/0833 (2024.01); H04W 72/1263 (2023.01); H04W 72/23 (2023.01); H04W 74/00 (2009.01)
CPC H04W 74/0841 (2013.01) [H04W 72/1263 (2013.01); H04W 72/23 (2023.01); H04W 74/006 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method of receiving, by a user equipment (UE), emergency information in a wireless communication system supporting Machine Type Communication (MTC), the method comprising:
receiving, from a base station (BS), information including a reference signal received power (RSRP) threshold;
determining a coverage enhancement (CE) mode based on the RSRP threshold and an RSRP measurement value;
determining a physical random access channel (PRACH) resource based on the CE mode;
transmitting, to the BS, a PRACH preamble based on the PRACH resource;
receiving, from the BS, a random access response including an uplink (UL) grant based on the PRACH preamble;
transmitting, to the BS, message 3 based on the UL grant;
receiving, from the BS, a message for contention resolution based on message 3;
receiving, from the BS, at least one emergency system information block (eSIB) including first scheduling information for the emergency information, wherein second scheduling information for the at least one eSIB is included in SIB1, wherein third scheduling information for the SIB1 is included in master information block (MIB),
wherein the second scheduling information is changed in response to at least one transmission of the at least one eSIB, the third scheduling information remains as same as before the at least at least one transmission of the at least one eSIB;
receiving, from the BS, configuration information related to a common search space;
receiving, from the BS, first downlink control information (DCI) for emergency information indication, that is scrambled by a system information-radio network temporary identifier (SI-RNTI), in the common search space; and
receiving, from the BS, the emergency information based on the first DCI and the scheduling information,
wherein the first DCI has a same DCI format 6-1A as second DCI,
wherein the first DCI has the same size as the second DCI that is scrambled by a cell-radio network temporary identifier (C-RNTI), which is mapped to a common search space.