分层异构密集无线网络的能效性能分析

doi:10.3969/j.issn.1000-0801.2014.03.009

Abstract

Abstract:

In dense heterogeneous wireless network, the large-scale small cell deployment can substantially increase not only the complexity of the interference environment but also the network energy consumption. Based on the system model and deployment scenario of small cell enhancement, the energy efficiency in dense heterogeneous wireless network was analyzed and simulated from the sight of system level under different scenarios with different pico numbers. The evaluation has profound guiding significance for the future energy efficiency analysis and optimization in dense heterogeneous wireless network.

Key words: dense heterogeneous wireless network, energy efficiency, system level simulation

Hengzhi Zhang,Zhongyuan Zhao,Fudong Yang,Yong Li. Performance Evaluation of Energy Efficiency in Dense Heterogeneous Wireless Network[J]. Telecommunications Science, 2014, 30(3): 42-48.

Figures/Tables 14

References 10

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回传链路	时延（单程）	吞吐量	优先级（1最高）
光纤接入1	10～30 ms	10 M～10 Gbit/s	1
光纤接入2	5～10 ms	100～1 000 Mbit/s	2
光纤接入3	2～5 ms	50 M～10 Gbit/s	1
DSL接入	15～60 ms	10～100 Mbit/s	1
电缆	25～35 ms	10～100 Mbit/s	2
无线链路	5～35 ms	10～100 Mbit/s，可以达	1
		到1 Gbit/s

场景	是否处于宏覆盖范围	是否与宏小区共用相同的信道	室内/室外	是否考虑小小区簇
1	是	是	室外	是
2a	是	否	室外	是
2b	是	否	室内	是
3	否	否	室内	是

仿真参数	参数取值
载频	2.0 GHz、3.5 GHz
带宽	10 MHz
载波数	1、2
路损模型	宏小区采用ITU UMa（urban macro）模型；小小区采用ITU UMi（urban micro）模型；基站和用户之间使用三维距离
穿透损耗	20 dB
阴影衰落	宏小区采用ITU UMa模型；
	小小区采用ITU UMi模型；
快衰	宏小区采用ITU UMa模型；
	小小区采用ITU UMi模型；
发射功率	宏基站：46 dBm；
	pico基站：30 dBm
天线增益	宏基站：17 dBi；
	pico基站：5 dBi
用户天线增益	0 dBi
每扇区簇个数	1个
簇内pico数	2、4、8或16个
每个扇区用户数	60
用户分布	2/3用户随机分布在簇内，1/3用户随机分布在宏小区内
pico在簇中分布半径	60 m
用户在簇中分布半径	70 m
最小距离	pico基站—pico基站：15 m；
	pico基站—用户：5 m；
	宏基站—簇中心：105 m；
	宏基站—用户：35 m；
	簇中心—簇中心：簇中心小区基站分布半径
业务模型	全缓冲（full buffer）

参数	宏基站	pico基站
发射功率P_tx	46 dBm	30 dBm
基础功耗P₀	130 W	30 W 或6.8 W

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Performance Evaluation of Energy Efficiency in Dense Heterogeneous Wireless Network

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