Patent ID: 8311079
Filing Date: 2012-11-13
Classification: H04B,H04J,H04L

Abstract:
1. A base station apparatus comprising: a transmitting unit configured to transmit data to a mobile station and transmit, to the mobile station, control information related to the data on a control channel element (CCE), an index of resource used for transmission of an ACK (ACKnowledgement) or NACK (Negative ACKnowledgement) by the mobile station is associated with the CCE number; and a receiving unit configured to receive the ACK or NACK corresponding to the data, the ACK or NACK being spread with an orthogonal sequence, which is one of plural orthogonal sequences, and with a sequence defined by a cyclic shift value, which is one of plural cyclic shift values and which is associated with the orthogonal sequence, and the ACK or NACK being transmitted from the mobile station, wherein: