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

Abstract

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
Pages4128-4132
Number of pages5
DOIs
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

Other

OtherIEEE International Conference on Communications, ICC 2008
Country/TerritoryChina
CityBeijing
Period5/19/085/23/08

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Computer Networks and Communications

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