US Patent 10517084 Base station signaling in a wireless network

A first base station may communicate with a second base station regarding a wireless device and handover. The first base station may send the wireless device's configuration to the second base station, and may receive, from the second base station, configuration parameters of carriers associated with the wireless device. The carriers may be of different types, and may have differences regarding reference signals. The first base station may inform the wireless device of the configuration parameters.