Piggybacked Acknowledgement for Reception Assessment in a Pervasive Broadcasting System

The automotive industry is aggressively developing communication based active safety applications. The communication activities of these vehicular safety applications primarily consist of frequent broadcast of status messages among all neighboring vehicles. In this kind of pervasive broadcasting system, a node's transmission frequency is likely restricted for various reasons (e.g. congestion control). This paper proposes a piggybacked acknowledgement protocol design that enables a node to quickly and effectively assess the reception rate among its intended audience for each broadcast. In turn, this node is able to identify particularly badly received broadcast instances and only rebroadcast these "failed" messages

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