US Patent 8995405 Pathloss reference configuration in a wireless device and base station

A base station transmits message(s) assigning each of at least one secondary cell to a cell group in cell groups comprising a primary cell group and a secondary cell group. The at least one message comprises a pathloss reference for a secondary cell. The pathloss reference is a configurable parameter if the secondary cell is in the primary cell group. The configurable parameter is configurable to a downlink of the secondary cell or the primary cell. The pathloss reference is only configurable as a downlink of the secondary cell if the secondary cell is in the secondary cell group.