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Title:
METHOD AND TERMINAL FOR DETECTING PHICH IN WIRELESS ACCESS SYSTEM
Document Type and Number:
WIPO Patent Application WO/2013/115554
Kind Code:
A1
Abstract:
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.

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Inventors:
YANG YOONOH (KR)
LIM SUHWAN (KR)
JUNG MANYOUNG (KR)
LEE SANGWOOK (KR)
Application Number:
PCT/KR2013/000746
Publication Date:
August 08, 2013
Filing Date:
January 30, 2013
Export Citation:
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Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04L1/18; H04L27/26
Domestic Patent References:
WO2011122833A22011-10-06
WO2010006285A22010-01-14
Foreign References:
KR20110119551A2011-11-02
KR20090064299A2009-06-18
KR20090089780A2009-08-24
Attorney, Agent or Firm:
KIM, Yong In et al. (7th Floor Hyundae Building,175-9 Jamsil-dong,Songpa-ku, Seoul 138-861, KR)
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