Date Added: Jul 2011
This paper 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 paper, the authors 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. They 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.