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1. (WO2016175576) METHOD AND DEVICE FOR FEEDING BACK CHANNEL STATE INFORMATION IN WIRELESS ACCESS SYSTEM SUPPORTING MACHINE TYPE COMMUNICATION
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2016/175576    International Application No.:    PCT/KR2016/004454
Publication Date: 03.11.2016 International Filing Date: 28.04.2016
IPC:
H04L 1/00 (2006.01), H04L 5/00 (2006.01), H04L 27/26 (2006.01), H04B 7/06 (2006.01)
Applicants: LG ELECTRONICS INC. [KR/KR]; 128, Yeoui-daero Yeongdeungpo-gu, Seoul 07336 (KR)
Inventors: KIM, Bonghoe; (KR).
YI, Yunjung; (KR)
Agent: KIM, Yong In; (KR)
Priority Data:
62/154,689 29.04.2015 US
Title (EN) METHOD AND DEVICE FOR FEEDING BACK CHANNEL STATE INFORMATION IN WIRELESS ACCESS SYSTEM SUPPORTING MACHINE TYPE COMMUNICATION
(FR) PROCÉDÉ ET DISPOSITIF DE RETOUR D'INFORMATIONS D'ÉTAT DE CANAL DANS UN SYSTÈME D'ACCÈS SANS FIL PRENANT EN CHARGE UNE COMMUNICATION DE TYPE MACHINE
(KO) 기계타입통신을 지원하는 무선 접속 시스템에서 채널상태정보를 피드백하는 방법 및 장치
Abstract: front page image
(EN)The present invention relates to a wireless access system supporting machine type communication (MTC) and, particularly, to: a method by which an MTC terminal receives a channel state information index and feeds back channel state information on the basis of the channel state information index; and devices for supporting the method. As one aspect of the present invention, the method by which an MTC terminal feeds back channel state information (CSI) in a wireless access system for supporting machine type communication (MTC) can comprise the steps of: receiving an upper layer signal including a CQI index selected from a mother channel quality information (CQI) table; receiving a physical downlink shared channel (PDSCH) repeatedly transmitted on the basis of a modulation scheme and coding rate indicated by the CQI index; measuring CSI for the PDSCH; and feeding back the measured CSI, wherein the mother CQI table is set to include up to a signal to interference plus noise ratio (SINR) area for a maximum coverage enhancement (CE) level supported in a network, and the CQI index can be selected in consideration of a CE level supportable by the MTC terminal.
(FR)La présente invention concerne un système d'accès sans fil prenant en charge une communication de type machine (MTC) et, plus particulièrement : un procédé par lequel un terminal MTC reçoit un indice d'informations d'état de canal et retourne des informations d'état de canal sur la base de l'indice d'informations d'état de canal; et des dispositifs permettant de prendre en charge ledit procédé. Selon un aspect de la présente invention, le procédé par lequel un terminal MTC retourne des informations d'état de canal (CSI) dans un système d'accès sans fil destiné à prendre en charge une communication de type machine (MTC) peut comprendre les étapes consistant à : recevoir un signal de couche supérieure comprenant un indice CQI sélectionné à partir d'une table mère d'informations de qualité de canal (CQI); recevoir un canal physique partagé descendant (PDSCH) transmis de façon répétée sur la base d'un schéma de modulation et d'un débit de codage indiqué par l'indice CQI; mesurer les CSI pour le canal PDSCH; et retourner les CSI mesurées, la table mère de CQI étant définie de manière à comprendre jusqu'à une zone de rapport signal à interférence plus bruit (SINR) pour un niveau d'amélioration de couverture (CE) maximum pris en charge dans un réseau, et l'indice CQI pouvant être sélectionné en tenant compte d'un niveau de CE pouvant être pris en charge par le terminal MTC.
(KO)본 발명은 기계타입통신(MTC)을 지원하는 무선 접속 시스템에 관한 것으로, 특히 MTC 단말이 채널상태정보 인덱스를 수신하고, 이를 기반으로 채널상태정보를 피드백하는 방법 및 이를 지원하는 장치들을 제공한다. 본 발명의 일 양태로서 기계타입통신(MTC)을 지원하는 무선접속시스템에서 MTC 단말이 채널상태정보(CSI)를 피드백하는 방법은, 마더 채널품질정보(CQI) 테이블에서 선택된 CQI 인덱스를 포함하는 상위 계층 신호를 수신하는 단계와 CQI 인덱스가 지시하는 변조 방식 및 코딩율을 기반으로 반복 전송되는 물리하향링크공유채널(PDSCH)을 수신하는 단계와 PDSCH에 대해서 CSI를 측정하는 단계와 측정한 CSI를 피드백하는 단계를 포함할 수 있다. 이때, 마더 CQI 테이블은 네트워크에서 지원하는 최대 커버리지 향상(CE) 레벨에 대한 SINR(Signal to Interference plus Noise Ratio) 영역까지 포함하도록 설정되고, CQI 인덱스는 MTC 단말이 지원 가능한 CE 레벨을 고려하여 선택될 수 있다.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG).
Publication Language: Korean (KO)
Filing Language: Korean (KO)