WIRELESS COMMUNICATIONS SYSTEM, WIRELESS BASE STATION DEVICE, USER TERMINAL, AND WIRELESS COMMUNICATIONS METHOD

摘要

To reduce interference for upstream signals in a user terminal connected to a low transmission-power base station, in a heterogeneous network. This wireless communications method is characterized by: in a wireless base station device for a first cell having a prescribed cell radius, notifying the user terminal of wireless resource information having mutually orthogonalized uplink signals for a user terminal for connection to a macro base station and uplink signals for a user terminal for connection to a low transmission-power base station for an LPN cell having a smaller cell radius than the cell radius of a macro cell; and, in the user terminal, arranging an uplink signal in the wireless resource on the basis of wireless resource information notified from the macro base station or the LPN, and sending the arranged uplink signal to the macro base station or the LPN.