標題: Fundamentals of the Downlink Green Coverage and Energy Efficiency in Heterogeneous Networks
作者: Liu, Chun-Hung
Fong, Kok Leong
資訊工程學系
電機工程學系
Department of Computer Science
Department of Electrical and Computer Engineering
關鍵字: Green communication;green coverage;energy efficiency;heterogeneous networks;cell (user) association;stochastic geometry
公開日期: Dec-2016
摘要: This paper studies the proposed green (energy-efficient) coverage probability, link and network energy efficiencies in the downlink of a heterogeneous cellular network (HetNet) consisting of K independent Poisson point processes of base stations (BSs). The important statistical properties of the universal (general) cell association functions are first studied, and the cell load statistics for power-law cell association functions, which can characterize the accurate void cell probability of a BS in every tier, are also derived. A simple and feasible green channel-aware cell association (GCA) scheme is proposed and the green coverage probability is also proposed for any particular cell association scheme, such as the maximum received power association (MRPA) and the nearest BS association (NBA) schemes. Then, the link and network energy efficiencies are proposed to characterize the mean spectrum efficiency per unit power consumption for a BS and the mean area spectrum efficiency for the HetNet, respectively. All the tight bounds on the green coverage probability, link, and network energy efficiencies for the GCA, MRPA, and NBA schemes are found. They are theoretically shown to pose the fundamental maximum limits on the link and network energy efficiencies achieved by any other cell association schemes, and such a fact is validated by numerical results as well.
URI: http://dx.doi.org/10.1109/JSAC.2016.2611981
http://hdl.handle.net/11536/134504
ISSN: 0733-8716
DOI: 10.1109/JSAC.2016.2611981
期刊: IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS
Volume: 34
Issue: 12
起始頁: 3271
結束頁: 3287
Appears in Collections:Conferences Paper