A concept on signaling spacial network conditions to provide Quality of Service in a VANET

In this paper we present a signaling mechanism of spacial divided network conditions in order to guarantee Quality of Service (QoS) in a Vehicular Ad Hoc Network (VANET) The target application shares information of sensed objects in the surrounding of the vehicles with its VANET neighbor nodes Therefore each vehicle broadcasts information of its surrounding periodi cally which leads to an unscalable bandwidth consumption as the density of communication nodes rises A higher network load will also lead to a higher latency of the transmitted data as the probability is that nodes have to wait for a free channeL The latency of data acquired from onboard sensors is critical if it is shared with other nodes as the validity of the data is1 ow. We present a signaling method based on a spatial partitioning in order to detect redundant source nodes for the same information. Avoiding redundant broadcasts will limit the application's bandwidth consumption and therefore the latency of the messages can be improved.