Title:
METHOD FOR TRANSMITTING AND RECEIVING CHANNEL STATE INFORMATION IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR
Document Type and Number:
WIPO Patent Application WO/2017/034238
Kind Code:
A1
Abstract:
A method for a machine type communication (MTC) terminal to report a channel state information (CSI) in a wireless communication system, according to an embodiment of the present invention, comprises the steps of: selecting a set of M downlink subframes as a CSI reference resource for the MTC terminal; measuring a channel quality indicator (CQI) through the CSI reference resource; and transmitting a CSI report including the CQI to a base station through an uplink subframe, wherein the MTC terminal is configured to repeatedly receive an MTC signal by frequency-hopping N sub-bands among a plurality of sub-bands. The number 'M' of the downlink subframes to be included in the CSI reference resource is determined on the basis of an upper layer parameter received from the base station. Further, the MTC terminal may measure the CQI on the basis of a cell-specific reference signal (CRS) received through the M downlink subframes selected from a reference downlink subframe located before the uplink subframe.
Inventors:
KIM BONGHOE (KR)
KIM KIJUN (KR)
YI YUNJUNG (KR)
KIM KIJUN (KR)
YI YUNJUNG (KR)
Application Number:
PCT/KR2016/009191
Publication Date:
March 02, 2017
Filing Date:
August 19, 2016
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04L1/00; H04B7/06; H04L1/06
Other References:
ZTE: "Considerations on CSI Feedback for MTC Enhancement", R1-154046, 3GPP TSG RAN WG1 MEETING #82, 15 August 2015 (2015-08-15), Beijing, China, XP050992966
MEDIATEK INC.: "CQI Definition for Rel-13 MTC", R1-154717, 3GPP TSG RAN WG1 MEETING #82, 15 August 2015 (2015-08-15), Beijing, China, XP050994343
PANASONIC: "CSI Report/measurement in MTC", R1-153971, 3GPP TSG RAN WG1 MEETING #82, 14 August 2015 (2015-08-14), Beijing, China, XP050992112
HUAWEI ET AL.: "On the Use of Periodic CSI", R1-153208, 3GPP TSG RAN WG1 MEETING #81, 16 May 2015 (2015-05-16), Fukuoka, Japan, XP050973050
LG ELECTRONICS: "Discussion on PDSCH Transmission for MTC", R1-152701, 3GPP TSG RAN WGI MEETING #81, 16 May 2015 (2015-05-16), Fukuoka, Japan, XP050973965
MEDIATEK INC.: "CQI Definition for Rel-13 MTC", R1-154717, 3GPP TSG RAN WG1 MEETING #82, 15 August 2015 (2015-08-15), Beijing, China, XP050994343
PANASONIC: "CSI Report/measurement in MTC", R1-153971, 3GPP TSG RAN WG1 MEETING #82, 14 August 2015 (2015-08-14), Beijing, China, XP050992112
HUAWEI ET AL.: "On the Use of Periodic CSI", R1-153208, 3GPP TSG RAN WG1 MEETING #81, 16 May 2015 (2015-05-16), Fukuoka, Japan, XP050973050
LG ELECTRONICS: "Discussion on PDSCH Transmission for MTC", R1-152701, 3GPP TSG RAN WGI MEETING #81, 16 May 2015 (2015-05-16), Fukuoka, Japan, XP050973965
Attorney, Agent or Firm:
KIM, Yong In et al. (KR)
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