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Reliability is a critical concern in disseminating safety messages in vehicular ad-hoc-networks (VANETs). Thus far, redundant broadcast (or next relay broadcast) has been used to ensure reliable transfer of safety messages. However, redundant broadcast fails to meet high-reliability requirement owing to lack of a feedback or acknowledgment (ACK) mechanism. In this work, a power controlled negative-acknowledgment...
Vehicular Ad hoc Networks (VANETs) provide vehicle-to-vehicle and vehicle-to-infrastructure communication using Dedicated Short-Range Communications (DSRC). The core objective of VANETs is to provide safety message communication among vehicles. In dense urban traffic, safety message communication encounters severe packet collisions due to excessive number of nodes contending to access the control...
Vehicular ad hoc networks (VANETs) rely on multi-hop communication in order to disseminate information to locations beyond the transmission range. In this paper, the use of handshaking mechanism is evaluated against instant transmission for safety message routing in VANETs for the first time. It is argued that due to the small size of VANET safety message (mean payload size of 100 bytes), handshaking...
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