A cross-layer architecture to exploit multi-channel diversity with a single transceiver

Jay A. Patel, Haiyun Luo, Indranil Gupta

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

Abstract

The design of multi-channel multi-hop wireless mesh networks is centered around the way nodes synchronize when they need to communicate. However, existing designs are confined to the MAC layer - they are based on either negotiation on a rendezvous control channel, or on optimistic synchronization. Both approaches scale poorly as the network grows in coverage and density. The rendezvous control channel may become the bottleneck, while optimistic synchronization may incur substantial overhead - especially amongst nodes close to a gateway, where the mesh traffic converges. In this paper, we describe Dominion - a cross-layer architecture that includes both medium access control and routing. At the MAC layer, a node switches channels in a deterministic manner to address the scalability issue. At the network layer, a Dominion node routes traffic along the shortest distance across both spatial and frequency domains, based on the deterministic channel-hopping schedule and network connectivity. Since the shortest distance path across the frequency domain is time variant, Dominion naturally spreads the packets of the same flow across multiple paths, relieving the intra-flow and inter-flow contention, and improving throughput. Through QualNet simulations we show that Dominion is able to achieve, on average, 1813 % higher aggregate distance-normalized throughput than IEEE 802.11, while being 1730% fairer (using Jain's fairness index) with 50 simultaneous random flows.

Original languageEnglish (US)
Title of host publicationProceedings - IEEE INFOCOM 2007
Subtitle of host publication26th IEEE International Conference on Computer Communications
Pages2261-2265
Number of pages5
DOIs
StatePublished - Sep 4 2007
EventIEEE INFOCOM 2007: 26th IEEE International Conference on Computer Communications - Anchorage, AK, United States
Duration: May 6 2007May 12 2007

Publication series

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

Other

OtherIEEE INFOCOM 2007: 26th IEEE International Conference on Computer Communications
CountryUnited States
CityAnchorage, AK
Period5/6/075/12/07

ASJC Scopus subject areas

  • Computer Science(all)
  • Electrical and Electronic Engineering

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