HybridCast: A hybrid probabilistic/deterministic approach for adjustable broadcast reliability in mobile wireless ad hoc networks

Thadpong Pongthawornkamol, Klara Nahrstedt, Guijun Wang

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

Abstract

Broadcast is a crucial yet expensive building block for many applications in bandwidth-scarce mobile wireless ad hoc networks.We propose a hybrid deterministic/probabilistic, decentralized broadcast protocol with adjustable broadcast reliability and overhead. The paper first proposes a purely probabilistic, topology-aware broadcast algorithm. The probabilistic broadcast adjusts each node's broadcast forwarding probability locally such that the average broadcast reliability requirement is met. An extension of the probabilistic broadcast to tolerate node mobility and packet loss is then presented. Furthermore, the paper augments the proposed probabilistic broadcast scheme with an existing deterministic broadcast protocol in order to reduce excessive broadcast overhead. The proposed hybrid protocol, called HybridCast, combines good characteristics of probabilistic broadcasts, such as adjustable reliability and resilience to mobility, with good characteristics of deterministic broadcasts, such as few retransmissions and low packet collisions. The simulation results show that the proposed protocol can achieve the system's reliability requirement with good tolerance to mobility and packet losses while incurring low broadcast overhead.

Original languageEnglish (US)
Title of host publicationProceedings - 2009 IEEE International Conference on Communications, ICC 2009
DOIs
StatePublished - 2009
Event2009 IEEE International Conference on Communications, ICC 2009 - Dresden, Germany
Duration: Jun 14 2009Jun 18 2009

Publication series

NameIEEE International Conference on Communications
ISSN (Print)0536-1486

Other

Other2009 IEEE International Conference on Communications, ICC 2009
Country/TerritoryGermany
CityDresden
Period6/14/096/18/09

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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