USER TERMINAL, RADIO BASE STATION AND RADIO COMMUNICATION METHOD

摘要

A user terminal receives configuration information of each small cell's discovery signal, establishes synchronization in at least one of time and frequency (sync #A) based on the discovery signal configuration information, and acquires first gap information, which represents gap in at least one of time and frequency. Also, the user terminal receives an association indicator, which represents configuration information of a measurement reference signal (CSI-RS) that is associated with a demodulation reference signal (DM-RS) for a downlink shared channel, establishes synchronization (sync #B) based on the configuration information of the measurement reference signal represented by the association indicator, and acquires second gap information, which represents gap in at least one of time and frequency. Thus, when CoMP transmission is executed in a plurality of small cells that use an incompatible carrier, the time/frequency gap in each small cell is corrected.

主权项

1. A user terminal that receives a downlink shared channel that is transmitted in coordinated multi-point transmission in a plurality of small cells within a macro cell, the user terminal comprising:
a receiving section that receives configuration information of a detection signal of each small cell; and a synchronization section that establishes synchronization in at least one of time and frequency, based on the configuration information of the detection signal, and acquires first gap information, which represents a gap in at least one of time and frequency, wherein: the receiving section receives an association indicator, which represents configuration information of a measurement reference signal that is associated with a demodulation reference signal for the downlink shared channel; and the synchronization section establishes the synchronization based on the configuration information of the measurement reference signal represented by the association indicator, and the first gap information, and acquires second gap information, which represents a gap in at least one of time and frequency.