西安电子科技大学学报

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联合eICIC和CoMP的小蜂窝网络干扰管理机制

冯立康;侯蓉晖   

  1. (西安电子科技大学 通信工程学院,陕西 西安 710071)
  • 收稿日期:2016-10-26 出版日期:2017-10-20 发布日期:2017-11-29
  • 作者简介:冯立康(1991-),男,西安电子科技大学硕士研究生,E-mail: lkfeng@xidian.edu.cn
  • 基金资助:

    国家自然科学基金资助项目(61571351);陕西省自然科学基础研究计划资助项目(2016JM6028);国家科技重大专项资助项目(2015ZX03002006-003)

ICIC and CoMP based interference management scheme in small cell networks

FENG Likang;HOU Ronghui   

  1. (School of Telecommunications Engineering, Xidian Univ., Xi'an 710071, China)
  • Received:2016-10-26 Online:2017-10-20 Published:2017-11-29

摘要:

在密集小蜂窝网络场景下,针对同层干扰和跨层干扰问题,提出了一种联合增强型小区间干扰协调和协作多点联合传输的密集小蜂窝干扰管理机制.这种机制考虑了协作多点联合传输对用户的链接、几乎空白子帧的配置、资源块分配的影响,在保证用户最低速率的前提下,最大化系统的吞吐量.仿真结果表明,相比基于增强型小区间干扰协调的干扰管理方法,联合增强型小区间干扰协调和协作多点联合传输的干扰管理方法进一步提升了网络吞吐量,提高了频谱利用率.

关键词: 增强型小区间干扰协调, 协作多点传输, 拉格朗日乘子法, 小蜂窝网络

Abstract:

This paper considers the cross-layer and co-layer interference in small cell networks. We propose an interference management scheme by jointly optimizing user association, ABS (Almost Blank Subframes) configuration, and resource allocation. Especially, the proposed interference management smartly utilizes the opportunities of CoMP-JT (Coordinated Multi Point-Joint Transmission) to mitigate the interference from the macro base station to increase the coverage area of small cells. Simulation results show that the proposed interference management improves network throughput and spectrum efficiency as compared with the existing methods.

Key words: enhanced inter-cell interference coordination, coordinated multi point transmission, Lagrange multipliers, small cell networks