Concentric cells in a wireless communication system

An air-to-ground (ATG) wireless communication network comprising:

• a plurality of base stations deployed to define three dimensional coverage up to a predetermined altitude over a geographic area,
• wherein a plurality of the base stations each comprise:
• a first antenna array comprising one or more antennas configured to form a first cell coverage area extending away from the first antenna array at least a first predetermined distance and having an increasing vertical beamwidth as distance from the first antenna array increases;
• and
• a second antenna array configured at an uptilt elevation angle relative to the first antenna array and forming a second cell coverage area that extends away from the second antenna array by at least a second predetermined distance and also having the increasing vertical beamwidth as the distance from the second antenna array increases,
• wherein the first and second cell coverage areas are concentric with each other.