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Sensors 2016, 16(9), 1475; doi:10.3390/s16091475

Cooperative Game-Based Energy Efficiency Management over Ultra-Dense Wireless Cellular Networks

1
School of Computer Science and Technology, China University of Mining and Technology, Xuzhou 221116, China
2
Key Laboratory of Gas and Fire Control for Coal Mines, China University of Mining and Technology, Xuzhou 221116, China
*
Author to whom correspondence should be addressed.
Academic Editor: Leonhard M. Reindl
Received: 14 July 2016 / Revised: 26 August 2016 / Accepted: 5 September 2016 / Published: 13 September 2016
(This article belongs to the Section Sensor Networks)
View Full-Text   |   Download PDF [2875 KB, uploaded 15 September 2016]   |  

Abstract

Ultra-dense wireless cellular networks have been envisioned as a promising technique for handling the explosive increase of wireless traffic volume. With the extensive deployment of small cells in wireless cellular networks, the network spectral efficiency (SE) is improved with the use of limited frequency. However, the mutual inter-tier and intra-tier interference between or among small cells and macro cells becomes serious. On the other hand, more chances for potential cooperation among different cells are introduced. Energy efficiency (EE) has become one of the most important problems for future wireless networks. This paper proposes a cooperative bargaining game-based method for comprehensive EE management in an ultra-dense wireless cellular network, which highlights the complicated interference influence on energy-saving challenges and the power-coordination process among small cells and macro cells. Especially, a unified EE utility with the consideration of the interference mitigation is proposed to jointly address the SE, the deployment efficiency (DE), and the EE. In particular, closed-form power-coordination solutions for the optimal EE are derived to show the convergence property of the algorithm. Moreover, a simplified algorithm is presented to reduce the complexity of the signaling overhead, which is significant for ultra-dense small cells. Finally, numerical simulations are provided to illustrate the efficiency of the proposed cooperative bargaining game-based and simplified schemes. View Full-Text
Keywords: ultra-dense wireless cellular networks; cooperative game; energy efficiency; power coordination ultra-dense wireless cellular networks; cooperative game; energy efficiency; power coordination
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Li, M.; Chen, P.; Gao, S. Cooperative Game-Based Energy Efficiency Management over Ultra-Dense Wireless Cellular Networks. Sensors 2016, 16, 1475.

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