Patent ID: 8693428
Filing Date: 2014-04-08
Classification: H04B,H04W

Abstract:
1. A mobile station in a mobile communication system which uses single-carrier FDMA as an uplink radio access scheme and in which multiple frequency blocks are arranged in a frequency direction and repeated in a time direction within an uplink system band, comprising: a receiving unit configured to receive from a base station both a transmission interval between scheduling requests and an instruction regarding a frequency of a frequency block in which a scheduling request is to be transmitted, the scheduling request being a signal transmitted before transmission of uplink data; a mapping unit configured to map a control channel including the scheduling request onto a frequency block corresponding to each timing of the transmission interval and the frequency which are received by the receiving unit; and a transmitting unit configured to transmit a signal of the control channel mapped by the mapping unit, wherein the mapping unit maps the control channel such that the control channel is code-multiplexed with a scheduling request from another mobile station by means of cyclic shifting of a Constant Amplitude Zero Auto-Correlation (CAZAC) sequence, wherein the mapping unit maps the control channel such that the control channel includes plural CAZAC sequences with a sequence length of twelve.