Bandwidth provisioning in infrastructure-based wireless networks employing directional antennas

Shiva Kasiviswanathan, Bo Zhao, Sudarshan Vasudevan, Bhuvan Urgaonkar

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


Motivated by the widespread proliferation of wireless networks employing directional antennas, we study the problem of provisioning bandwidth in such networks. Given a set of subscribers and one or more access points possessing directional antennas, we formalize the problem of orienting these antennas in two fundamental settings: (i) subscriber-centric, where the objective is to fairly allocate bandwidth among the subscribers and (ii) provider-centric, where the objective is to maximize the revenue generated by satisfying the bandwidth requirements of subscribers. For both the problems, we first design algorithms for a network with only one access point working under the assumption that the number of antennas does not exceed the number of non-interfering channels. Using the well-regarded lexicographic max-min fair allocation as the objective for a subscriber-centric network, we present an optimum dynamic programming algorithm. For a provider-centric network, the allocation problem turns out to be NP-hard. We present a greedy heuristic based algorithm that guarantees almost half of the optimum revenue. We later enhance both these algorithms to operate in more general networks with multiple access points and no restrictions on the relative numbers of antennas and channels. A simulation-based evaluation using OPNET demonstrates the efficacy of our approaches and provides us further in insights into these problems.

Original languageEnglish (US)
Title of host publicationDistributed Computing and Networking - 11th International Conference, ICDCN 2010, Proceedings
Number of pages12
StatePublished - 2010
Event11th International Conference on Distributed Computing and Networking, ICDCN 2010 - Kolkata, India
Duration: Jan 3 2010Jan 6 2010

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume5935 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Other11th International Conference on Distributed Computing and Networking, ICDCN 2010

All Science Journal Classification (ASJC) codes

  • Theoretical Computer Science
  • Computer Science(all)


Dive into the research topics of 'Bandwidth provisioning in infrastructure-based wireless networks employing directional antennas'. Together they form a unique fingerprint.

Cite this