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The concept of drone corridors is recently getting more attention to enableconnected, safe, and secure flight zones in the national airspace. To supportbeyond visual line of sight (BVLOS) operations of aerial vehicles in a dronecorridor, cellular base stations (BSs) serve as a convenient infrastructure,since such BSs are widely deployed to provide seamless wireless coverage.However, antennas in the existing cellular networks are down-tilted tooptimally serve their ground users, which results in coverage holes if they arealso used to serve drones. In this letter, we consider the use of additionaluptilted antennas at cellular BSs and optimize the uptilt angle to minimizeoutage probability for a given drone corridor. Our numerical results show howthe beamwidth and the maximum drone corridor height affect the optimal value ofthe antenna uptilt angle.

Base Station Antenna Uptilt Optimization for Cellular-Connected Drone Corridors