Patent ID: 8711770
Filing Date: 2014-04-29
Classification: H04L,H04W

Abstract:
1. A base station apparatus used in a mobile communication system to which an OFDM scheme is applied in downlink, comprising: a scheduler configured to perform assignment of radio resources to a user apparatus for each subframe; a control channel generation unit configured to generate a control channel for reporting a result of scheduling by the scheduler to the user apparatus; and a mapping unit configured to map the control channel and a data channel, wherein control information includes information indicating a radio resource amount used for the control channel, the mapping unit maps the control channel to a predetermined number of OFDM symbols from the start of a subframe formed by plural OFDM symbols, and maps the control information to subcarriers in a first OFDM symbol of the subframe such that the subcarriers do not overlap between cells in a frequency domain, two antenna transmission is performed by space frequency block coding, the control information is mapped to consecutive two subcarriers, and a control block of each user is mapped to an OFDM symbol within three OFDM symbols in which the control channel is mapped.