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计算机工程 ›› 2018, Vol. 44 ›› Issue (11): 100-104. doi: 10.19678/j.issn.1000-3428.0049079

• 移动互联与通信技术 • 上一篇    下一篇

基于SDN的5G大规模MIMO网间频谱共享机制研究

刘涛涛1,禹忠1,王军选1,杨鹏2   

  1. 1.西安邮电大学 通信与信息工程学院,西安 710121; 2.中国信息通信研究院,北京 100191
  • 收稿日期:2017-10-26 出版日期:2018-11-15 发布日期:2018-11-15
  • 作者简介:刘涛涛(1991—),男,硕士,主研方向为电子与通信工程;禹忠,高级工程师;王军选,教授;杨鹏,高级工程师
  • 基金资助:
    国家科技重大专项(2017ZX03001012-005)

Research on Spectrum Sharing Mechanism of 5G Large Scale MIMO Networks Based on SDN

LIU Taotao 1,YU Zhong 1,WANG Junxuan 1,YANG Peng 2   

  1. 1.School of Communication and Information Engineering,Xi’an University of Posts and Telecommunications,Xi’an 710121,China; 2.China Information and Communication Research Institute,Beijing 100191,China
  • Received:2017-10-26 Online:2018-11-15 Published:2018-11-15

摘要:

在用户分布密集的区域,传统的gNB端波束成形技术无法解决严重的网间同频干扰问题。为此,提出一种软件定义网络(SDN)频谱统一协调管理方法。在gNB端与UE端均采用大规模多输入多输出(MIMO)波束对准技术计算最佳干扰阈值,在SDN控制层使用干扰阈值优化贪心算法,对各毫米波网络干扰链路频谱资源进行集中管理分配。仿真结果表明,大规模MIMO技术能够实现资源复用,SDN链路协调机制可以在频谱重用技术下带来协调增益,该方法提升了干扰链路信噪比并提高了用户通信质量。

关键词: 大规模天线, 波束成形, 毫米波, 软件定义网络, 频谱共享

Abstract: In the user-dense region,the traditional gNB beamforming technology can not solve the serious problem of co-channel interference between networks.Therefore,a unified and coordinated management method for Software Defined Network(SDN) spectrum is proposed.Large-scale Multiple-Input Multiple-Output(MIMO) beam alignment technology is used to calculate the optimal interference threshold at both the gNB and UE terminals.SDN control layer uses interference threshold optimization greedy algorithm to centralize the management and allocation of spectrum resources of interference links in millimeter Wave (mmWave) networks.Simulation results show that large scale MIMO can achieve resource reuse,SDN link coordination mechanism can bring coordination gain under the spectrum reuse technology,this method improves the signal-to-noise ratio of interference link and improves the quality of user communication.

Key words: large scale antenna, beamforming, millimeter Wave(mmWave), Software Defined Network(SDN), spectrum sharing

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