GreenInfra: Capacity of large-scale hybrid networks with cost-effective infrastructure

Cheol Jeong, Won Yong Shin

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


The cost-effective impact and fundamental limits of infrastructure support with rate-limited wired backhaul links (i.e., GreenInfra support), directly connecting base stations (BSS), are analyzed in a large-scale hybrid network of unit node density, where multiantenna BSS are deployed. We consider a general scenario such that the rate of each BS-to-BS link scales at an arbitrary rate relative to the number of randomly located wireless nodes $n$. For the operating regimes with respect to the number of BSS and the number of antennas at each BS, we first analyze the minimum rate of each backhaul link CBS, required to guarantee the same throughput scaling as in the infinite-capacity backhaul link case. We then identify the operating regimes in which the required rate CBS scales slower than nϵ for an arbitrarily small ϵ > 0 (i.e., the regimes where CBS does not need to be infinitely large). We also show the case where our network with GreenInfra is fundamentally in the infrastructure-limited regime, in which the performance is limited by the rate of backhaul links. In addition, we derive a generalized throughput scaling law including the case where the rate of each backhaul link scales slower than CBS. To validate the throughput scaling law for finite values of system parameters, numerical evaluation is also shown via computer simulations.

Original languageEnglish
Article number7448815
Pages (from-to)1179-1191
Number of pages13
JournalIEEE Journal on Selected Areas in Communications
Issue number5
Publication statusPublished - 2016 May

Bibliographical note

Publisher Copyright:
© 1983-2012 IEEE.

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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