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Weighted link quality and forward progress coupled with modified RTS/CTS for beaconless packet forwarding protocol (B-PFP) in VANETs

Authors:
Kashif Naseer Qureshi at University of Limerick
Kashif Naseer Qureshi
Hanan Abdullah at Universiti Teknologi Malaysia
Hanan Abdullah
Omprakash Kaiwartya at Nottingham Trent University
Omprakash Kaiwartya
Fasee Ullah at Universiti Malaysia Pahang
Fasee Ullah
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Abstract and Figures

Vehicular ad hoc networks are considered as a promising wireless communication area to provide safety and comfort on the roads. Due to high mobility and dynamic topologies, the wireless communication links are not stable and network suffers from delay and disconnection issues. Geographical routing protocols rely on beacon exchange to update source and neighbor location in the network. If the neighbor information is outdated or not accurate, the source may not be able to select next optimal forwarder in the network. Source based routing protocols have designed to handle unstable issues and enhance the network performance. To this end, we propose a beaconless packet forwarding protocol for better forwarding decisions in an urban environment. The beaconless protocol is based on modified handshake mechanism with weighted forward progress, link quality, and directions greedy metrics. The protocol has two modes of operations: at the intersection and in between intersections to determine next forwarder node and route. Simulation results revealed better performance of proposed beaconless protocol in terms of data delivery and delay.
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... Qureshi et al. [9] present a metric for link classification, which was used to improve the performance of Beaconless Packet Forwarding Protocol (B-PFP). The proposed metric is based on the Packet Reception Ratio (PRR) to classify the links into three states: connect if PRR ≺ 90%, transient if the PRR value is between 10% and 90%, disconnect if the PRR value≺ 10%. ...
... A comparison was carried out between our model and the model proposed in [9] that uses PRR was carried out to classify links See the Fig. 6. ...
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... The Geographical routing protocols were dependent on a beacon exchange for updating both source and neighbour locations in the network. A protocol of beaconless packet forwarding to make better decisions of forwarding in urban environments was proposed by Qureshi et al., [13]. This protocol was based on a new modified mechanism of handshake that had weighted forward progress, greedy metrics, and link quality. ...
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Conference Paper
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