RADIO BASE STATION, USER TERMINAL AND RADIO COMMUNICATION METHOD

摘要

The present invention is designed to establish synchronization properly even when synchronizing between different cells by means of a radio interface in an asynchronous NW. A radio base station establishes radio synchronization by using downlink signals transmitted from the radio base station of other cells, and has a synchronization information control section that, via an inter-base station interface, reports a synchronization information request to the radio base stations of other cells and also acquires synchronization information reported from the radio base stations of other cells, and a determining section that determines a radio base station to establish radio synchronization with, based on the synchronization information acquired, and the synchronization information which the synchronization information control section acquires from the radio base stations of other cells includes the synchronization status, the synchronization stratum levels, and information to represent the synchronization groups, of the radio base stations of other cells.

主权项

1. A radio base station that establishes radio synchronization by using a downlink signal transmitted from a radio base station of another cell, the radio base station comprising:
a synchronization information control section that, via an inter-base station interface, reports a synchronization information request to the radio base station of the other cell and also acquires synchronization information reported from the radio base station of the other cell; and a determining section that determines a radio base station to establish radio synchronization with, based on the synchronization information acquired, wherein the synchronization information which the synchronization information control section acquires from the radio base station of the other cell includes a synchronization status, a synchronization stratum level, and information to represent a synchronization group, of the radio base station of the other cell.