| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily achieve signal synchronization between base stations, irrespective of an environment in which the base stations are installed. <P>SOLUTION: A femto base station 10a notifies a UE 20 of a portion of a RACH sequence number as an eNB sequence number. The UE 20 replies to the femto base station 10a with a RACH-P signal corresponding to the eNB sequence number. On receiving the RACH-P signal corresponding to the eNB sequence number, the femto base station 10a transmits a first reference signal to the UE 20 at timing associated with the reception timing of the RACH-P signal. <P>COPYRIGHT: (C)2013,JPO&INPIT |
