Evolution of base stations in cellular networks: Denser deployment versus coordination

Yifan Liang, Andrea Goldsmith, Gerard Foschini, Reinaldo Valenzuela, Dmitry Chizhik

Research output: Chapter in Book/Report/Conference proceedingConference contribution

31 Scopus citations


It has been demonstrated that base station cooperation can reduce co-channel interference (CCI) and increase cellular system capacity. In this work we consider another approach by dividing the system into microcells through denser base station deployment. We adopt the criterion to maximize the minimum spectral efficiency of served users with a certain user outage constraint. In a two-dimensional hexagon array with homogeneous microcell structure, under the proposed propagation model denser base station deployment outperforms suboptimal cooperation schemes (zero-forcing) when the density increases beyond 3 - 12 base stations per km2, the exact value depending on the rules of outage user selection. However, close-to-optimal cooperation schemes (zero-forcing with dirty-paper-coding) are always superior to denser deployment. Performance of a hierarchial cellular structure mixed with both macrocells and microcells is also evaluated.

Original languageEnglish (US)
Title of host publicationICC 2008 - IEEE International Conference on Communications, Proceedings
Number of pages5
StatePublished - 2008
Externally publishedYes
EventIEEE International Conference on Communications, ICC 2008 - Beijing, China
Duration: May 19 2008May 23 2008

Publication series

NameIEEE International Conference on Communications
ISSN (Print)0536-1486


OtherIEEE International Conference on Communications, ICC 2008

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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