TY - GEN
T1 - Call completion probability in heterogeneous networks with energy harvesting base stations
AU - Wang, Craig
AU - Durrani, Salman
AU - Guo, Jing
AU - Zhou, Xiangyun
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/6/16
Y1 - 2015/6/16
N2 - In this paper, we analyse the call completion probability in a two-tier heterogeneous network (HetNet), where all base stations (BSs) in each tier are powered solely by energy harvesting. Since energy harvesting BSs may need to be kept OFF and allowed to recharge, users connected to a BS that turns OFF need to be served by neighboring BSs that are ON. This hand-off of a call can impact the call performance from a users point of view. We formulate the call completion probability for HetNets by adapting the definition from traditional cellular networks. Adopting a realistic BS energy consumption model and using tools from stochastic geometry, we derive very tight upper and lower bounds on the call completion probability in the presence of Rayleigh fading, interference and energy harvesting BSs. We examine the impact of the system parameters on the completion probability. The results show that the macro BS energy harvesting parameters have the dominant impact on the call completion probability. In particular, the call completion probability is an increasing function of the macro BS battery capacity and the minimum energy level at which macro BS switches back ON. However, it is an increasing function of the macro BS energy harvesting rate only when the macro BS battery capacity and the minimum energy level at which macro BS switches back ON are large. The results can be used in network planning to ensure certain quality-of-service (QoS) to users in terms of call completion probability.
AB - In this paper, we analyse the call completion probability in a two-tier heterogeneous network (HetNet), where all base stations (BSs) in each tier are powered solely by energy harvesting. Since energy harvesting BSs may need to be kept OFF and allowed to recharge, users connected to a BS that turns OFF need to be served by neighboring BSs that are ON. This hand-off of a call can impact the call performance from a users point of view. We formulate the call completion probability for HetNets by adapting the definition from traditional cellular networks. Adopting a realistic BS energy consumption model and using tools from stochastic geometry, we derive very tight upper and lower bounds on the call completion probability in the presence of Rayleigh fading, interference and energy harvesting BSs. We examine the impact of the system parameters on the completion probability. The results show that the macro BS energy harvesting parameters have the dominant impact on the call completion probability. In particular, the call completion probability is an increasing function of the macro BS battery capacity and the minimum energy level at which macro BS switches back ON. However, it is an increasing function of the macro BS energy harvesting rate only when the macro BS battery capacity and the minimum energy level at which macro BS switches back ON are large. The results can be used in network planning to ensure certain quality-of-service (QoS) to users in terms of call completion probability.
KW - Heterogeneous networks
KW - call completion probability
KW - coverage probability
KW - energy harvesting base stations
UR - http://www.scopus.com/inward/record.url?scp=84938811592&partnerID=8YFLogxK
U2 - 10.1109/ICT.2015.7124681
DO - 10.1109/ICT.2015.7124681
M3 - Conference contribution
T3 - 2015 22nd International Conference on Telecommunications, ICT 2015
SP - 191
EP - 197
BT - 2015 22nd International Conference on Telecommunications, ICT 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2015 22nd International Conference on Telecommunications, ICT 2015
Y2 - 27 April 2015 through 29 April 2015
ER -