异构网络跨层协作传输技术研究

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

通信学报 ›› 2014, Vol. 35 ›› Issue (8): 198-205.doi: 10.3969/j.issn.1000-436x.2014.08.024

异构网络跨层协作传输技术研究

张琛^1,²,粟欣²,王文清³,曾捷²,邝育军¹

¹ 电子科技大学移动互联实验室，四川成都 611731
² 清华大学信息技术研究院清华信息科学与技术国家实验室，北京 100084
³ 大唐移动通信设备有限公司，北京 100083

出版日期:2014-08-25 发布日期:2017-06-29
基金资助:
国家科技重大专项课题基金资助项目;北京自然科学基金重点基金资助项目;国家高技术研究发展计划（“863计划）基金资助项目;国家高技术研究发展计划（“863计划）基金资助项目;中瑞合作基金资助项目;国家重点基础研究发展计划（“973计划）基金资助项目

Research of cross-tier cooperative transmission technology in heterogeneous network

GChen ZHAN^1,²,Xin SU²,Wen-qing WANG³,Jie ZENG²,Yu-jun KUANG¹

¹ Mobile Link Laboratory, University of Electronic Science and Technology of China, Chengdu 611731, China
² Research Institute of Information Technology, Tsinghua National Laboratory for Information Science and Technology, Tsinghua University, Beijing 100084, China
³ Datang Mobile Communications Equipment Co.,LTD, Beijing 100083, China

Online:2014-08-25 Published:2017-06-29
Supported by:
The National S＆T Major Project;Beijing Natural Science Foundation Funded Project;The National High Technology Research and Development Program of China(863 Program);The National High Technology Research and Development Program of China(863 Program);Sino-Swedish Strategic Cooperative Programme;The National Basic Research Program of China(973 Program)

摘要/Abstract

摘要：

提出了一种分层协作框架，在此框架下采用结合协作预编码的跨层协作传输技术以解决异构网络严重的层间干扰，特别是小区范围扩展区域的干扰问题。所提出的协作传输策略基于OFDMA下行传输系统并支持宏基站和低功率基站在资源块级别的协作传输。仿真结果表明在使用小区范围扩展的异构网络中，基于分层协作框架的协作传输技术在系统吞吐量性能方面优于现有eICIC技术。

关键词: 异构网络, 协作传输, smallcel, 协作预编码, 资源块分配

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

张琛,粟欣,王文清,曾捷,邝育军. 异构网络跨层协作传输技术研究[J]. 通信学报, 2014, 35(8): 198-205.

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.

图/表 9

图1

图2

图3

图4

表1

系统参数设置"

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

表1

图5

图6

图7

表2

参考文献 10

[1]	KHANDEKAR A , BHUSHAN N , TINGFANG J , et al. LTE-advanced:heterogeneous networks[A]. European Wireless Conference (EW)[C] Lucca, Italy, 2010. 978-982.
[2]	DAMNJANOVIC A , MONTOJO J , WEI Y B , et al. A survey on 3GPP heterogeneous networks[J]. Wireless Communications, IEEE, 2011, 18(3): 10-21.
[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.
[4]	LI Q , HU R Q , QING Y , et al. Intracell cooperation and resource allocation in a heterogeneous network with relays[J]. IEEE Transac-tions on Vehicular Technology, 2013, 62(4): 1770-1784.
[5]	KOUTSIMANIS C , FODOR G . A dynamic resource allocation scheme for guaranteed bit rate services in OFDMA networks[A]. IEEE Inter-national Conference on (ICC'08)[C] Beijing, China, 2008. 2524-2530.
[6]	LI G Q , LIU H . Downlink radio resource allocation for multi-cell OFDMA system[J]. IEEE Transactions on Wireless Communications 2006, 5(12): 3451-3459.
[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.
[10]	3GPP TR36.942. Radio Frequency (RF) System Scenarios v.11.0.0[S]. 2012.

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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异构网络跨层协作传输技术研究

Research of cross-tier cooperative transmission technology in heterogeneous network

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