Patent ID: 9179466
Filing Date: 2015-11-03
Classification: H04W

Abstract:
1. A base station apparatus which shares at least a part of a frequency band with another base station apparatus that covers a small-scale cell, covers a large-scale cell, and is capable of transmitting a downlink transmission frame at transmission timing different from the another base station apparatus, comprising: a blank resource setting section configured to, when the downlink transmission frame includes a Multimedia Broadcast multicast service Single Frequency Network (MBSFN) subframe in which a blank period is set except for a downlink control channel and a reference signal and the downlink transmission frame is subframe-shifted in a time-axis direction relative to another downlink transmission frame of the another base station apparatus to make the blank period of the MBSFN subframe coincident with a downlink control channel of the another downlink transmission frame, set radio resources in a subframe other than the MBSFN subframe in the downlink transmission frame as blank resources, the radio resources interfering with the downlink control channel of the another downlink transmission frame; a user data assigning section configured to assign user data to the downlink transmission frame while avoiding the blank resources; and a transmission section configured to transmit the downlink transmission frame assigned with the user data to a mobile terminal apparatus, wherein the blank resources of the downlink radio frame of the large-scale cell are set based on a shift amount of transmission timing of downlink radio frames of the small-scale cell and the large-scale cell.