Bandwidth optimization in hetnets with competing service providers

Cheng Chen, Randall A. Berry, Michael L. Honig, Vijay G. Subramanian

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

5 Scopus citations

Abstract

We consider a wireless network in which multiple Service Providers (SPs) compete to provide both macrocell and femtocell services in different bands. There are two types of users: mobile users that can only connect to macrocells, and fixed users that can be served by both macrocells and femtocells. For a given allocation of bandwidths across SPs, we characterize for each SP the optimal bandwidth split across the macro- and femtocells along with the equilibrium prices. We show that there exists a unique Nash equilibrium wherein for each SP, macrocells only serve mobile users while femtocells only serve fixed users. All possible Nash equilibria for different system parameters are sorted into four categories corresponding to whether or not different SPs assign bandwidth to the macro- and/or femtocells. In addition, we characterize properties of each category. The equilibrium prices and macro/femto bandwidths can be computed via a series of best response updates, which is proven to converge. Conditions are also given that guarantee optimal social welfare as the number of SPs tends to infinity. Numerical results are presented to illustrate how the Nash equilibrium can change as a function of SP bandwidths.

Original languageEnglish (US)
Title of host publication2015 IEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages504-509
Number of pages6
ISBN (Electronic)9781467371315
DOIs
StatePublished - Aug 4 2015
EventIEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2015 - Hong Kong, Hong Kong
Duration: Apr 26 2015May 1 2015

Publication series

NameProceedings - IEEE INFOCOM
Volume2015-August
ISSN (Print)0743-166X

Other

OtherIEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2015
CountryHong Kong
CityHong Kong
Period4/26/155/1/15

ASJC Scopus subject areas

  • Computer Science(all)
  • Electrical and Electronic Engineering

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