Patent ID: 9049709
Filing Date: 2015-06-02
Classification: H04J,H04L,H04W

Abstract:
1. A base station apparatus that transmits control information using a first control channel and a second control channel, the first control channel using a common reference signal that is receivable by all terminal apparatuses, the second control channel using the common reference signal or a specific reference signal for each terminal apparatus, the base station apparatus comprising: a search space configuring section of a first integrated circuit configured to configure a search space having a plurality of allocation candidates, in a first resource region to which the first control channel is mapped and a second resource region to which the second control channel is mapped; and an allocating section of the first integrated circuit or a second integrated circuit configured to allocate the control information to a resource in one allocation candidate from among the plurality of allocation candidates in the search space, wherein: a ratio of a number of the allocation candidates in the second resource region to a number of the allocation candidates in the first resource region in the search space configured in the terminal apparatus using the specific reference signal in the second control channel is equal to or greater than a ratio of a number of the allocation candidates in the second resource region to a number of the allocation candidates in the first resource region in the search space configured in the terminal apparatus using the common reference signal in the second control channel.