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异构网络跨层协作传输技术研究

张 琛,粟 欣,王文清,曾 捷,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:2014-08-15
  • 基金资助:
    国家科技重大专项课题基金资助项目(2013ZX03003-003);北京自然科学基金重点基金资助项目(4110001);国家高技术研究发展计划(“863”计划)基金资助项目(2012AA011402,2014AA01A706);中瑞合作基金资助项目(2012DFG12010);国家重点基础研究发展计划(“973”计划)基金资助项目(2013CB329002)

Research of cross-tier cooperative transmission technology in heterogeneous network

  • Online:2014-08-25 Published:2014-08-15

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。

Abstract: A cross-tier cooperative transmission strategy with cooperative precoding is used to reduce the intercell interference 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 hierarchical cooperative framework provides more satisfactory system throughput gains compared with non-cooperative scheme and the existing eICIC technology under cell range expansion.

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