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arXiv 1608.01756cs.ITmath.IT
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异构网络下行链路绿色覆盖和能量效率的基本原理

Fundamentals of the Downlink Green Coverage and Energy Efficiency in Heterogeneous Networks

Chun-Hung Liu, Kok Leong Fong

摘要:

本文研究了由基站(BS)的$K$独立泊松点过程(PPP)组成的异构蜂窝网络(HetNet)下行链路的绿色(节能)覆盖概率、链路和网络能量效率。首先研究了通用小区关联函数的重要统计特性,推导了幂律小区关联函数的小区负载统计量,它可以准确地表征基站在每一层中的空小区概率。提出了一种简单可行的绿色信道感知的小区关联(GCA)方案,并给出了最大接收功率关联(MRPA)和最近基站关联(NBA)等特定小区关联方案的绿色覆盖概率。然后,链路和网络的能量效率,提出了表征的平均频谱效率每单位功耗的BS和平均区域频谱效率的HetNet,分别。本文给出了GCA、MRPA和NBA方案的绿色覆盖概率、链路和网络能量效率的严格界,理论上证明了它们是其它小区关联方案所能达到的链路和网络能量效率的最大极限,数值结果也验证了这一事实。

英文摘要:

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 (PPPs) 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, is 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 nearest base station 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 a 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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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