TY - GEN
T1 - Energy Efficient Altitude Optimization of an Aerial Access Point
AU - babu, Nithin
AU - Ntougias, Konstantinos
AU - Papadia, Constantinos
AU - Popovski, Petar
PY - 2020/10/8
Y1 - 2020/10/8
N2 - In this paper, we propose an energy-efficient optimal altitude for an aerial access point (AAP), which acts as a flying base station to serve a set of ground user equipment (UE). Since the ratio of total energy consumed by the aerial vehicle to the communication energy is very large, we include the aerial vehicle's energy consumption in the problem formulation. After considering the energy consumption model of the aerial vehicle, our objective is translated into a non-convex optimization problem of maximizing the global energy efficiency (GEE) of the aerial communication system, subject to altitude and minimum individual data rate constraints. At first, the non-convex fractional objective function is solved by using sequential convex programming (SCP) optimization technique. To compare the result of SCP with the global optimum of the problem, we reformulate the initial problem as a monotonic fractional optimization problem (MFP) and solve it using the polyblock outer approximation (PA) algorithm. Numerical results show that the candidate solution obtained from SCP is the same as the global optimum found using the monotonic fractional programming technique. Furthermore, the impact of the aerial vehicle's energy consumption on the optimal altitude determination is also studied.
AB - In this paper, we propose an energy-efficient optimal altitude for an aerial access point (AAP), which acts as a flying base station to serve a set of ground user equipment (UE). Since the ratio of total energy consumed by the aerial vehicle to the communication energy is very large, we include the aerial vehicle's energy consumption in the problem formulation. After considering the energy consumption model of the aerial vehicle, our objective is translated into a non-convex optimization problem of maximizing the global energy efficiency (GEE) of the aerial communication system, subject to altitude and minimum individual data rate constraints. At first, the non-convex fractional objective function is solved by using sequential convex programming (SCP) optimization technique. To compare the result of SCP with the global optimum of the problem, we reformulate the initial problem as a monotonic fractional optimization problem (MFP) and solve it using the polyblock outer approximation (PA) algorithm. Numerical results show that the candidate solution obtained from SCP is the same as the global optimum found using the monotonic fractional programming technique. Furthermore, the impact of the aerial vehicle's energy consumption on the optimal altitude determination is also studied.
KW - Altitude Optimization
KW - Global energy efficiency
KW - Monotonic optimization
KW - Sequential convex programming
KW - UAV communication
UR - http://www.scopus.com/inward/record.url?scp=85094113123&partnerID=8YFLogxK
U2 - 10.1109/PIMRC48278.2020.9217265
DO - 10.1109/PIMRC48278.2020.9217265
M3 - Article in proceeding
SN - 978-1-7281-4491-7
T3 - I E E E International Symposium Personal, Indoor and Mobile Radio Communications
BT - 2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications
PB - IEEE
T2 - 2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications
Y2 - 31 August 2020 through 3 September 2020
ER -