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1. (WO2013115554) METHOD AND TERMINAL FOR DETECTING PHICH IN WIRELESS ACCESS SYSTEM
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2013/115554    International Application No.:    PCT/KR2013/000746
Publication Date: 08.08.2013 International Filing Date: 30.01.2013
IPC:
H04L 1/18 (2006.01), H04L 27/26 (2006.01)
Applicants: LG ELECTRONICS INC. [KR/KR]; 20 Yeouido-dong Yeongdeungpo-gu Seoul 150-721 (KR)
Inventors: YANG, Yoonoh; (KR).
LIM, Suhwan; (KR).
JUNG, Manyoung; (KR).
LEE, Sangwook; (KR)
Agent: KIM, Yong In; KBK & Associates 7th Floor, Hyundae Building 175-9 Jamsil-dong Songpa-ku Seoul 138-861 (KR)
Priority Data:
61/592,006 30.01.2012 US
61/609,953 13.03.2012 US
Title (EN) METHOD AND TERMINAL FOR DETECTING PHICH IN WIRELESS ACCESS SYSTEM
(FR) PROCÉDÉ ET TERMINAL DE DÉTECTION D'UN PHICH DANS UN SYSTÈME D'ACCÈS SANS FIL
(KO) 무선 접속 시스템에서 PHICH 검출 방법 및 이를 위한 단말
Abstract: front page image
(EN)The present invention relates to a method and terminal for detecting a physical hybrid-ARQ indicator channel (PHICH) in a wireless access system that supports enhanced inter-cell interference coordination. In particular, the method includes: determining whether the PHICH exists in only a 0th orthogonal Frequency Division Multiplexing (OFDM) symbol if a subframe transmitted by a neighboring base station is an almost blanked subframe (ABS); determining whether a common reference signal (CRS) of the neighboring base station collides with a CRS of a serving base station if the PHICH exists outside of the 0th OFDM symbol; determining whether CRS power of the neighboring base station is greater than a preset threshold if the CRS of the neighboring base station does not collide with the CRS of the serving base station; and determining whether an acknowledgement/negative-acknowledgement (ACK/Negative-ACK) is detected by replacing a symbol of the PHICH, overlapped with the CRS of the neighboring base station, with 0 and summing the PHICH symbols, when the CRS power of the neighboring base station is greater than the preset threshold.
(FR)La présente invention concerne un procédé et un terminal de détection d'un canal indicateur ARQ hybride physique (PHICH) dans un système d'accès sans fil qui prend en charge la coordination améliorée du brouillage entre cellules. En particulier, le procédé comprend les étapes consistant à : déterminer si le PHICH existe seulement dans le symbole OFDM 0 (multiplexage par répartition orthogonale de la fréquence) si une sous-trame transmise par une station de base voisine est une sous-trame presque supprimée (ABS) ; déterminer si un signal de référence commun (CRS) de la station de base voisine entre en collision avec un CRS d'une station de base de desserte si le PHICH existe à l'extérieur du symbole OFDM 0 ; déterminer si la puissance CRS de la station de base voisine est supérieure à un seuil prédéfini si le CRS de la station de base voisine n'entre pas en collision avec le CRS de la station de base de desserte ; et déterminer si un accusé de réception/accusé de réception négatif (ACK/ACK négatif) est détecté en remplaçant un symbole du PHICH, chevauché par le CRS de la station de base voisine, par 0 et la somme des symboles PHICH, lorsque la puissance CRS de la station de base voisine est plus grande que le seuil prédéterminé.
(KO)본 발명에서는 진보된 셀 간 간섭 협력(enhanced Inter-Cell Interference Coordination)을 지원하는 무선 접속 시스템에서 PHICH(Physical Hybrid-ARQ Indicator Channel)를 검출하는 방법 및 이를 위한 단말이 개시된다. 구체적으로, 인접 기지국이 전송하는 서브프레임이 ABS(Almost Blanked Subframe)인 경우, PHICH가 0번 OFDM(Orthogonal Frequency Division Multiplexing) 심볼에만 존재하는지 여부를 판단하는 단계, PHICH가 0번 OFDM 심볼에만 존재하지 않는 경우, 인접 기지국의 공통 참조 신호(CRS: Common Reference Signal)와 서빙 기지국의 CRS 가 충돌되는지 여부를 판단하는 단계, 인접 기지국의 CRS와 서빙 기지국의 CRS 가 충돌되지 않는 경우, 인접 기지국의 CRS 전력이 미리 설정된 임계치보다 큰지 여부를 판단하는 단계 및 인접 기지국의 CRS 전력이 미리 설정된 임계치보다 큰 경우, 인접 기지국의 CRS와 겹치는 PHICH의 심볼을 0로 치환한 후 PHICH 심볼을 합산하여 ACK/NACK(Acknowledgement/Negative-ACK)을 검출을 판단하는 단계를 포함한다.
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, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, 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, 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, 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, ML, MR, NE, SN, TD, TG).
Publication Language: Korean (KO)
Filing Language: Korean (KO)