Energy-Efficient Sleep Strategy With Variant Sleep Depths for Open-Access Femtocell Networks

This letter aims to enhance the energy-efficiency (EE) for hyper-dense small-cell networks by designing a low-complexity sleep strategy for base-stations (BSs). First, four operation modes are considered for BSs, i.e., active, standby, sleep, and off. To be specific, the active, standby, and sleep m...

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Bibliographic Details
Published in:IEEE communications letters 2019-04, Vol.23 (4), p.708-711
Main Authors: Chang, Wenson, Cheng, Wen-Yen, Meng, Zhao-Ting, Su, Szu-Lin
Format: Article
Language:English
Subjects:
Complexity theory
Delay
energy-efficiency
femtocell
Femtocell networks
IEEE 802.16 Standard
Power demand
Quality of service
Signal to noise ratio
Sleep strategy
small-cell networks
Switches
Switching theory
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Summary:This letter aims to enhance the energy-efficiency (EE) for hyper-dense small-cell networks by designing a low-complexity sleep strategy for base-stations (BSs). First, four operation modes are considered for BSs, i.e., active, standby, sleep, and off. To be specific, the active, standby, and sleep modes are for serving the delay-intolerant, delay-sensitive, and rate-sensitive demands. Second, the BSs with lower EE are iteratively considered to switch into lower-energy operation modes, if all the users with stringent delay requirement can be reassociated with the quality-of-service (QoS) provision. To improve the success rate of reassociation, all the BSs that can reach the predefined QoS can be the feasible targets. Compared with the conventional schemes, a remarkable 72% and 51% enhancement of EE can be achieved and more BSs can operate in the lower-energy modes.
ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2019.2900437