QoS Aware Energy Efficiency Analysis in the Cellular Networks

Bei LIU  Ling QIU  Jie XU  

IEICE TRANSACTIONS on Communications   Vol.E94-B   No.10   pp.2925-2928
Publication Date: 2011/10/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E94.B.2925
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
quality of service (QoS),  effective energy efficiency (EEE),  effective capacity (EC),  power control,  

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In cellular networks, maximizing the energy efficiency (EE) while satisfying certain QoS requirements is challenging. In this article, we utilize effective capacity (EC) theory as an effective means of meeting these challenges. Based on EC and taking a realistic base station (BS) power consumption model into account, we develop a novel energy efficiency (EE) metric: effective energy efficiency (EEE), to represent the delivered service bit per energy consumption at the upper layer with QoS constraints. Maximizing the EEE problem with EC constraints is addressed and then an optimal power control scheme is proposed to solve it. After that, the EEE and EC tradeoff is discussed and the effects of diverse QoS parameters on EEE are investigated through simulations, which provides insights into the quality of service (QoS) provision, and helps the system power consumption optimization.