Performance Analysis for Network Based UAS
Unmanned aerial vehicles [UAVs] are expected to be an important component of the fifth generation (5G)/beyond 5G (B5G) cellular architectures that can potentially facilitate wireless broadcast or point-to-multipoint transmissions. The distinct features of various drones such as the maximum operational altitude, communication, coverage, computation, and endurance impel the use of a multi-tier architecture for future drone-cell networks. We focus on investigating the feasibility of multi-tier drone network architecture over traditional single-tier drone networks and identifying the scenarios in which drone networks can potentially complement the traditional RF-based terrestrial networks. We investigate the performance of a multi- tier drone network in terms of spectral efficiency of downlink transmission while illustrating the optimal intensity and altitude of drones in different tiers numerically.
Communication and Energy-Efficient Optimization for UAS
Unmanned aerial systems (UASs) can act as flying base stations, relays and data collector to provide communication links for ground users. The research of our laboratory about UAS-aided communication include:
- The path planning and the allocation of bits offloaded to the UAS, when the UASs act as computation servers for ground users. The path and the bits allocation are optimized for the purpose of energy efficiency.
- The planning of the trajectory of the UASs is optimized, when the UASs collect the data from ground user and transmits data to the ground users to minimize the energy consumption.
- The study of the cooperation of multiple UASs to provide reliable communication links under the constraint of the lifetime of the UASs.