On piggybacking in vehicular networks

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

50 Scopus citations


This work is motivated by network applications that require nodes to disseminate their state to others. In particular, vehicular nodes will host applications that periodically disseminate time-critical state across the network to help improve on-road safety. In this work, we want to minimize the average age of state information that a node observes from any other node in networks with hundreds to thousands of nodes. We explore the benefits, vis-a-vis reducing age, of a multi-hop wireless network over a fully-connected one, for a physical network of on-road vehicles, by allowing nodes to piggyback other nodes' states. We show that for a large road network and a chosen schedule, there exists an optimal fraction of connected neighbor nodes, which, for a fixed signal-to-noise ratio between most distant nodes, is invariant to the size of the network. Via simulation we confirm that significant reductions in age are obtained via piggybacking for network sizes of interest.

Original languageEnglish (US)
Title of host publication2011 IEEE Global Telecommunications Conference, GLOBECOM 2011
StatePublished - 2011
Event54th Annual IEEE Global Telecommunications Conference: "Energizing Global Communications", GLOBECOM 2011 - Houston, TX, United States
Duration: Dec 5 2011Dec 9 2011

Publication series

NameGLOBECOM - IEEE Global Telecommunications Conference


Other54th Annual IEEE Global Telecommunications Conference: "Energizing Global Communications", GLOBECOM 2011
Country/TerritoryUnited States
CityHouston, TX

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering


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