Invention Grant
- Patent Title: Method for improving transmission and reception performance of LTE MTC downlink control channel and apparatus therefor
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Application No.: US17266047Application Date: 2019-08-09
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Publication No.: US11621760B2Publication Date: 2023-04-04
- Inventor: Jaehyung Kim , Seonwook Kim , Changhwan Park , Seokmin Shin , Joonkui Ahn , Suckchel Yang , Seunggye Hwang
- Applicant: LG ELECTRONICS INC.
- Applicant Address: KR Seoul
- Assignee: LG ELECTRONICS INC.
- Current Assignee: LG ELECTRONICS INC.
- Current Assignee Address: KR Seoul
- Agency: Lee Hong Degerman Kang Waimey
- Priority: KR10-2018-0116637 20180928,KR10-2018-0133983 20181102,KR10-2019-0018253 20190215
- International Application: PCT/KR2019/010154 WO 20190809
- International Announcement: WO2020/032736 WO 20200213
- Main IPC: H04B7/06
- IPC: H04B7/06 ; H04W4/70 ; H04L5/00 ; H04L25/02 ; H04L27/26 ; H04W72/04

Abstract:
The present specification discloses a method for receiving, by a terminal, a machine type communication (MTC) physical downlink control channel (MPDCCH) from a base station in a wireless communication system, the method comprising: receiving, from a base station, configuration information related to reception of a demodulation reference signal (DMRS) to which one of a plurality of candidate precoders applied to a cell specific reference signal (CRS) is applied; receiving, from the base station, the DMRS and control information through the MPDCCH on the basis of the configuration information; performing channel estimation on the MPDCCH on the basis of at least one of the DMRS or the CRS; and demodulating the control information on the basis of the channel estimation, wherein when a subframe which is not available for the CRS exists in an MPDCCH repetition, the channel estimation is performed using only the DMRS.
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