TY - JOUR
T1 - Energy-Efficient Sleep Strategy with Variant Sleep Depths for Open-Access Femtocell Networks
AU - Chang, Wenson
AU - Cheng, Wen Yen
AU - Meng, Zhao Ting
AU - Su, Szu Lin
N1 - Funding Information:
Manuscript received December 22, 2018; revised January 28, 2019; accepted February 6, 2019. Date of publication February 21, 2019; date of current version April 9, 2019. This work was supported by the Ministry of Science and Technology, Taiwan, under the contracts 107-2634-F-009-006 and 108-2634-F-009-006. The associate editor coordinating the review of this letter and approving it for publication was X. Chu. (Corresponding author: Wenson Chang.) The authors are with the Department of Electrical Engineering, National Cheng Kung University, Tainan 701, Taiwan (e-mail: wenson@ ee.ncku.edu.tw). Digital Object Identifier 10.1109/LCOMM.2019.2900437
Publisher Copyright:
© 1997-2012 IEEE.
PY - 2019/4
Y1 - 2019/4
N2 - 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.
AB - 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.
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U2 - 10.1109/LCOMM.2019.2900437
DO - 10.1109/LCOMM.2019.2900437
M3 - Article
AN - SCOPUS:85064717122
SN - 1089-7798
VL - 23
SP - 708
EP - 711
JO - IEEE Communications Letters
JF - IEEE Communications Letters
IS - 4
M1 - 8648407
ER -