Abstract
We propose a broadcast message forwarding algorithm for V2V communication in a platooning scenario for heavy duty trucks. The algorithm utilizes link information, which is piggybacked on the original data packet, to estimate which nodes are best suited to forward the packet. The aim is to reach all nodes in the platoon with as few forward messages as possible in order to avoid channel congestion. The algorithm is evaluated by simulation using real world V2V measurement data as input. We show that the algorithm performs almost as good as two ETSI standardized forwarding algorithms with respect to keeping the data age for the entire platoon at a low level. But when it comes to keeping the message intensity low, our algorithm outperforms the better of the ETSI algorithms by 35%.
Highlights
The emerging field of Intelligent Transport Systems (ITS) shows potential of improving traffic safety, decreasing traffic congestion, and lowering the environmental impact from the transport sector
We present the Data Age Dependent (DAD) forwarding algorithm utilizing link information in order to select forwarding nodes
The algorithm is designed for message forwarding in heavy duty platooning based on V2V communication
Summary
The emerging field of Intelligent Transport Systems (ITS) shows potential of improving traffic safety, decreasing traffic congestion, and lowering the environmental impact from the transport sector. By letting road users collect position and intentions, using vehicle to vehicle (V2V) communication, from surrounding road users and store this information in local dynamic maps (LDM), the overall safety can be increased due to a higher level of awareness These LDMs can be shared within a macro perspective ITS system and a control system could potentially handle traffic flows in such a way that congestion can be avoided and overall traffic throughput can be increased. In order to make safe and efficient platooning possible, the dynamic behavior of the vehicles needs to be shared among the participating vehicles enabling reaction on intended action rather than on measured speed changes of the preceding vehicle This information sharing can be realized by using V2V communication based on IEEE 802.11-2012 [5] at the 5.9 GHz band dedicated for wireless access in vehicular environments.
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