异构网络跨层协作传输技术研究

doi:10.3969/j.issn.1000-436x.2014.08.024

Abstract

Abstract:

A cross-tier cooperative transmission strategy with cooperative precoding is used to reduce the intercell inter-ference in heterogeneous network, especially the interference in cell range expansion areas. The proposed cooperative strategy supports the cooperative transmission of Macro BS and low power BS at resource block level based on LTE-Advanced downlink transmission system. Simulation results indicate that the cooperative strategy based on hierar-chical cooperative framework provides more satisfactory system throughput gains compared with non-cooperative scheme and the existing eICIC technology under cell range expansion.

Key words: heterogeneous network, cooperative transmission, small cell, cooperative precoding, resource block allocation

GChen ZHAN,Xin SU,Wen-qing WANG,Jie ZENG,Yu-jun KUANG. Research of cross-tier cooperative transmission technology in heterogeneous network[J]. Journal on Communications, 2014, 35(8): 198-205.

Figures/Tables 9

设置参数	参数值
异构部署场景	3GPP, Pico/Hot zone, configuration 1, model 1
系统拓扑	19 eNB, 3 cell/site
每个扇区的Pico数目	10
ISD（站间距）	500 m
热点地区半径	40 m
热点用户比例P^hotspot	2/3
载波频率	2 GHz
系统带宽	10 MHz, downlink
资源块数目	50
每个扇区的用户数	30
宏基站发射功率	46 dBm
Pico发射功率路损模型	30 dBmMacro：?(128.1+37.6log $(d_{k, l}^{m})$ dk m ))
	Pico:?(140.7+36.7log $(d_{k, l}^{p})$ dk p ))
阴影衰落相关距离	50 m
传播损耗	20 dB
天线增益	Macro 14 dBi
	Pico 5 dBi
阴影衰落标准偏差	8 dB
噪声密度	?174 dBm/Hz

References 10

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[3]	SORET B , WANG H , PEDERSEN K I , et al. Multicell cooperative for LTE-advanced heterogeneous network scenarios[J]. IEEE Transactions on Wireless Communications, 2013, 20(1): 27-34.
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[7]	HAN S Q , YANG C Y , WANG G , et al. Coordinated multi-point transmission with non-ideal channel reciprocity[A]. IEEE 2012 Wire-less Communications and Networking Conference (WCNC)[C] Shanghai, China, 2012. 952-957.
[8]	3GPP TR36.814. Further Advancements for E-UTRA Physical Layer Aspects v.9.0.0[S]. 2010.
[9]	KARAKAYALI M K , FOSCHINI G J , VALENZUELA R , et al. On the maximum common rate achievable in a coordinated network[A]. IEEE International Conference on (ICC'06)[C] Istanbul, Turkey, 2006. 4333-4338.
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仿真场景	系统吞吐量/(Mbit·s^?1)	50%用户吞吐量/(Mbit·s^?1)	5%用户吞吐量/(Mbit·s^?1)
non-RE	3 381.8	0.575 1	0.087 6
RE+non-cooperation	2 881.2	0.785 3	0.175 7
RE+eICIC	3 999.5	1.021 5	0.258 3
RE+cooperation	4 776.0	1.494 8	0.304 8

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Research of cross-tier cooperative transmission technology in heterogeneous network

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