Patent ID: 8423044
Filing Date: 2013-04-16
Classification: H04B,H04J,H04L,H04W

Abstract:
1. A method for receiving an acknowledgement/negative acknowledgement (ACK/NACK) signal in a wireless communication system, the method comprising: receiving, by a mobile station, two or more physical hybrid automatic repeat request indicator channel (PHICH) groups, each PHICH group of the two or more PHICH groups carrying one or more multiplexed acknowledgement/negative acknowledgement (ACK/NACK) signals; determining, by the mobile station, a PHICH group index for the ACK/NACK signal by using a first function; and determining, by the mobile station, a code index for the ACK/NACK signal by using a second function, wherein the first function and the second function include a common variable, wherein the first function has a property that makes the PHICH group index to be changed as the common variable increases by one, and wherein the second function has a property that changes the code index as the common variable increases by a number of the two or more PHICH groups.