Priority levels based multi-hop broadcasting method for vehicular ad hoc networks

Abstract

This paper deals with broadcasting problem in Vehicular Ad hoc Networks (VANETs). This communication mode is commonly used for sending safety messages and traffic information. However designing an efficient broadcasting protocol is hard to achieve since it has to take into account some parameters related to the network environment, for example the network density, in order to avoid causing radio interferences. In this paper, we propose a novel Autonomic Dissemination Method (ADM) which delivers messages in accordance with given priority and density levels. The proposed approach is based on two steps: an offline optimization process and an adaptation to the network characteristics. The first step uses a genetic algorithm to find solutions that fit the network context. The second one relies on the Autonomic Computing paradigm. ADM allows each vehicle to dynamically adapt its broadcasting strategy not only with respect to the network density, but also in accordance to the priority level of the message to send. The experimental results show that ADM effectively uses the radio resources even when there are globally many messages to send simultaneously. Moreover, ADM allows to increase the message delivery ratio and to reduce the latency and radio interferences.

Dynamic speed adaptive classified (D-SAC) data dissemination protocol for improving autonomous robot performance in VANETs

“…The traffic details are found through exchanging information among the vehicles through beacons or through RSUs. In [23], autonomic dissemination method (ADM) is proposed where the vehicles are allowed to dynamically change its broadcasting according to the network density and based on the priority level of packet to be sent. The advantages of this method are that the latency and radio interferences are reduced.…”

“…Though the methods presented in [10,20,21] yield high data delivery ratio, they cause high dissemination overhead. In literatures [19,21,22,23,25], though redundant data are reduced through beacons some problems, such as bandwidth exploitation and increased congestion, may occur. When beacons are used, the congestion will occur in high density since the beacons broadcast the message many times.…”

A topology-oblivious routing protocol for NDN-VANETs

“…This layer divides the geographical area into regions (clusters) and in each region there are three types of virtual nodes, each responsible for handling packets differently. [14] deals with the broadcasting problem in VANETs and proposes an Autonomic Dissemination Method (ADM), a method that delivers messages according to the network density and the given priority level of a message.…”