Energy efficiency of joint base station and relay sleeping in heterogeneous networks

• Published in: IET communications Vol. 11; no. 18; pp. 2721 - 2728
• Main Authors: Yousefi, Erfan, Eslami, Mohsen
• Format: Journal Article
• Language: English
• Published: The Institution of Engineering and Technology 21.12.2017
• Subjects: base stations; cellular radio; cooperative relay‐BS sleep mode; energy conservation; energy consumption; energy efficiency; joint base station; mobile networks; power consumption; relay assisted heterogeneous cellular networks; relay networks (telecommunication); relay sleeping; relay‐only sleep mode; Research Article; sleep mode effect; telecommunication power management; relay assisted heterogeneous cellular networks; relay sleeping; telecommunication power management; relay-only sleep mode; mobile networks; sleep mode effect; power consumption; energy efficiency; energy conservation; joint base station; cooperative relay-BS sleep mode; energy consumption; base stations; relay networks (telecommunication); cellular radio
• ISSN: 1751-8628; 1751-8636
• DOI: 10.1049/iet-com.2016.0622

Energy efficiency (EE) is an important criterion in devising emerging mobile networks. One of the techniques that has been proposed to reduce energy consumption of base stations (BSs) in cellular networks is BS sleep mode. In this work, the effect of sleep mode on throughput, coverage and EE of relay assisted heterogeneous cellular networks is analysed. A cooperative relay-BS sleep mode-based algorithm for heterogeneous networks is proposed and its performance analytically evaluated. It is shown that the proposed algorithm has a considerably higher EE compared with a homogeneous network without sleep mode or a heterogeneous network with relay-only sleep mode.