UPLINK INTERFERENCE-BASED MONITORING OF DOWNLINK SIGNALS BY UNMANNED AERIAL VEHICLE

摘要

An unmanned aerial vehicle (UAV) calculates an estimated uplink interference caused by the UAV at a neighboring cell based on a downlink signal received from the neighboring cell. Based on the estimated uplink interference, the UAV monitors downlink messages transmitted from the neighboring cell. If the uplink interference experienced by the neighboring cell exceeds an interference threshold, the neighboring cell transmits a downlink message, which includes an uplink interference indicator, to the UAV. Upon receipt of the uplink interference indicator, the UAV transmits a measurement report, including the uplink interference indicator, to the serving cell. In some cases, the serving cell transmits a handover command to the UAV based at least partially on the measurement report. The serving cell may also maintain a mobility history for the neighboring cell. The mobility history indicates a history of uplink interference problems and/or UAV handover availability for the neighboring cell.