Achieving Sustainable Ultra-Dense Heterogeneous Networks for 5G

Jianping An, Kai Yang, Jinsong Wu, Neng Ye, Song Guo, Zhifang Liao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

210 Citations (Scopus)


Due to the exponentially increased demands of mobile data traffic, for example, a 1000-fold increase in traffic demand from 4G to 5G, network densification is considered as a key mechanism in the evolution of cellular networks, and UDHN is a promising technique to meet the requirements of explosive data traffic in 5G networks. In the UDHN, the base station is brought closer and closer to users through densely deploying small cells, which results in extremely high spectral efficiency and energy efficiency. In this article, we first present a potential network architecture for the UDHN, and then propose a generalized orthogonal/non-orthogonal random access scheme to improve the network efficiency while reducing the signaling overhead. Simulation results demonstrate the effectiveness of the proposed scheme. Finally, we present some of the key challenges of the UDHN.

Original languageEnglish
Article number8198807
Pages (from-to)84-90
Number of pages7
JournalIEEE Communications Magazine
Issue number12
Publication statusPublished - Dec 2017

ASJC Scopus subject areas

  • Computer Science Applications
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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