Patent ID: 8995329
Filing Date: 2015-03-31
Classification: H04L

Abstract:
1. A method for detecting a Hybrid Automatic Repeat reQuest (HARQ) ACKnowledgement/Negative ACKnowledgement (ACK/NACK) feedback signal at a specific relay node (RN) in a mobile communication system, the method comprising: receiving specific channel configuration information from an evolved Node B (e Node B), the specific channel configuration information including a starting point of a Physical Hybrid ARQ Indicator Channel (PHICH) zone dedicated to a plurality of RNs including the specific RN and offset information indicating a position of a specific PHICH within the PHICH zone, the specific PHICH dedicated to the specific RN; receiving the HARQ ACK/NACK feedback signal from the eNode B for uplink transmission via the PHICH zone; detecting the specific PHICH based on the received specific channel configuration information; and decoding the received HARQ ACK/NACK feedback signal, wherein a number of PHICH entities within the PHICH zone corresponds to a number of RNs that are supported by a backhaul subframe to which the PHICH zone is allocated.