Hareesh Ayanampudi Ravindra Dhuli Pilot power optimization in scalable user-centric HC-RANs for future IoT and IIoT applications. 99-107 2025 February 80 Ann. des Télécommunications 1-2 https://doi.org/10.1007/s12243-024-01014-8 db/journals/adt/adt80.html#AyanampudiD25 streams/journals/adt