Patent ID: 9167577
Filing Date: 2015-10-20
Classification: H04L,H04W

Abstract:
1. A method for transmitting a hybrid automatic repeat request (HARQ) response by a user equipment (UE) in a wireless communication system, the method comprising: receiving, by the UE, a first enhanced physical downlink control channel (E-PDCCH) candidate corresponding to one E-PDDCH set of two E-PDCCH sets configured for the UE, each E-PDCCH set including a plurality of resource units and having a unique E-PDCCH set index; and transmitting, by the UE, the HARQ response using a physical uplink control channel (PUCCH) resource determined by the UE based on a specific resource unit index of the first E-PDCCH candidate, wherein the specific resource unit index is a resource unit index determined based on one of the two E-PDCCH sets having a lowest E-PDCCH set index when each of condition i), condition ii) and condition iii) described below is satisfied: