As drone technology continues its rapid evolution, the appropriate use of radio frequency ranges has become a topic of considerable importance. The frequency ranges that drones operate on are vital for maintaining seamless communication, ensuring control stability, and enhancing safety. With drones being deployed for a growing variety of applications—from aerial photography and package delivery to defense surveillance—the importance of managing these frequencies cannot be overestimated.

Drones primarily operate in the Industrial, Scientific, and Medical (ISM) bands, most commonly 2.4 GHz and 5.8 GHz. These frequency ranges are globally unlicensed, making them accessible for various applications, including Wi-Fi, Bluetooth, and of course, drone operations. However, as the use of drones increases, these bands could become crowded, leading to potential interference and control issues.

One perspective considers the possible integration of drones into cellular networks, operating on licensed frequency bands typically used for mobile communication. This proposition can enhance the reliability of drone communication systems and extend their range significantly. Also, it opens up the possibility of beyond visual line of sight (BVLOS) operations, which will be vital for applications like drone delivery or emergency services.

However, using cellular frequency bands for drones presents its challenges. Issues such as handoff between different cellular towers, ensuring consistent signal strength at varying altitudes, and mitigating interference with terrestrial cellular users need to be addressed.

Another perspective emphasizes the development of new, dedicated frequency bands for drones. This could ensure a clear, unobstructed communication channel for drone operations and significantly reduce the risk of interference. However, this requires substantial regulatory groundwork and international agreement, considering the global nature of airspace.

Additionally, the application of advanced communication techniques like adaptive frequency hopping, MIMO (Multiple Input Multiple Output), and beamforming can enhance drone communication capabilities within existing frequency bands. These methods can improve signal integrity, increase range, and ensure robust communication even in crowded frequency environments.

In conclusion, the future of frequency ranges for air drones is set to be a balanced mix of innovative utilization of existing resources and the establishment of new ones. As technology and regulations evolve, it's anticipated that drones will have a more robust and reliable communication ecosystem, catering to an ever-growing range of applications.