电信科学 ›› 2017, Vol. 33 ›› Issue (6): 34-40.doi: 10.11959/j.issn.1000-0801.2017197

• 专题：5G • 上一篇    下一篇

5G绿色超密集无线异构网络：理念、技术及挑战

李渝舟1,江涛1,曹洋1,李赞2   

  1. 1 华中科技大学，湖北 武汉 430074
    2 西安电子科技大学，陕西 西安 710071
  • 修回日期:2017-06-09 出版日期:2017-06-01 发布日期:2017-06-27
  • 作者简介:李渝舟（1986?），男，华中科技大学讲师、硕士生导师，主要从事 5G 无线网络、绿色通信和海洋探测与定位等领域的研究工作。|江涛（1970?），男，华中科技大学二级教授、博士生导师，教育部“长江学者”特聘教授，国家杰出青年科学基金获得者，国家“万人计划”科技创新领军人才，科技部“创新人才推进计划”中青年科技创新领军人才，长期从事宽带移动通信、天地一体化信息网络、深空与深海探测、信息与网络安全工作。|曹洋（1987?），男，华中科技大学讲师、硕士生导师，主要从事 5G 蜂窝通信、未来网和物联网等领域的研究工作。|李赞（1975?），女，西安电子科技大学教授、博士生导师，教育部“长江学者”特聘教授，科技部“创新人才推进计划”中青年科技创新领军人才，中国青年女科学家奖和中国青年科技奖获得者，主要从事突发通信、数字信号处理、无线通信系统和流星余迹通信系统等领域的研究工作。
  • 基金资助:
    国家自然科学基金资助项目(61601192);国家自然科学基金资助项目(61631015);国家自然科学基金资助项目(61601193);国家自然科学基金资助项目(61428104);国家自然科学基金资助项目(61471163);中央高校基本科研业务费专项资金资助项目(2016YXMS298)

Green 5G ultra-dense wireless heterogeneous networks:guidelines,techniques,and challenges

Yuzhou LI1,Tao JIANG1,Yang CAO1,Zan LI2   

  1. 1 Huazhong University of Science and Technology,Wuhan 430074,China
    2 Xidian University,Xi’an 710071,China
  • Revised:2017-06-09 Online:2017-06-01 Published:2017-06-27
  • Supported by:
    The National Natural Science Foundation of China(61601192);The National Natural Science Foundation of China(61631015);The National Natural Science Foundation of China(61601193);The National Natural Science Foundation of China(61428104);The National Natural Science Foundation of China(61471163);The Fundamental Research Funds for the Central Universities(2016YXMS298)

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摘要：

超密集无线异构网络被公认为是大幅提升无线网络容量、解决蜂窝网所面临的1 000倍数据量挑战最富有前景的一种5G组网技术。但是，与5G愿景背道而驰的是网络的超密集化部署在提升谱效的同时也极度地增大了系统的能耗，降低了通信能效。旨在利用超密集异构网络具有的全网管理能力和网络分集效应，从宏观的网络匹配与微观的资源聚合两方面探索超密集异构网络绿色演进的关键理论与技术。首先论述了绿色演进的基本理念，然后提出了利用负载自适应的基站开关控制、主动缓存和干扰感知的跨网资源分配三大关键技术来提升网络的能效，同时也讨论了每种技术在应用时所面临的挑战。

关键词: 超密集异构无线网络, 能效效率, 频谱效率

Abstract:

Ultra-dense wireless heterogeneous network (Ud-HetNet) has been recognized as one of the most promising 5G network-organization techniques to significantly improve the wireless capacity and thus solve the 1 000× data challenge faced by cellular networks.However,counter to the expected 5G vision,although benefiting from the spectrum efficiency (SE) improvement,ultra-dense network deployment significantly increases system energy consumption and thus decreases network energy efficiency (EE).The key theories and techniques for energy-efficiently deploying Ud-HetNet were investigated from two aspects of macroscopic network matching and microscopic resource aggregation by exploiting their overall network management capabilities and network diversity effects.Specifically,the overall design guidelines for green evolution were introduced firstly,and then three techniques,namely load-aware base station on/off switching,proactive caching,and interference-aware cross-network resource allocation,were proposed to improve the network EE.Open issues and challenges that need to be further explored were also discussed.

Key words: ultra-dense wireless heterogeneous network, energy efficiency, spectrum efficiency

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