Abstract
Remote monitoring applications in urban vehicular ad-hoc networks (VANETs) enable authorities to monitor data related to various activities of a moving vehicle from a static infrastructure. However, urban environment constraints along with various characteristics of remote monitoring applications give rise to significant hurdles while developing routing solutions in urban VANETs. Since the urban environment comprises several road intersections, using their geographic information can greatly assist in achieving efficient and reliable routing. With an aim to leverage this information, this article presents a receiver-based data forwarding protocol, termed Intersection-based Link-adaptive Beaconless Forwarding for City scenarios (ILBFC). ILBFC uses the position information of road intersections to effectively limit the duration for which a relay vehicle can stay as a default forwarder. In addition, a winner relay management scheme is employed to consider the drastic speed decay in vehicles. Furthermore, ILBFC is simulated in realistic urban traffic conditions, and its performance is compared with other existing state-of-the-art routing protocols in terms of packet delivery ratio, average end-to-end delay and packet redundancy coefficient. In particular, the results highlight the superior performance of ILBFC, thereby offering an efficient and reliable routing solution for remote monitoring applications.
Highlights
Remote monitoring of vehicles moving in urban traffic environment significantly contribute to various applications in the field of telemedicine, road safety and mobile surveillance
This is done with the aim to take into account the drastic decay in the speed of vehicles due to the road intersections and traffic signals encountered in urban vehicular ad-hoc networks (VANETs)
The existing work has focused on alleviating this issue by allowing the relay vehicle to stay as a default forwarder for certain duration, the latter duration is not accurate enough since it does not consider various aspects of urban traffic such as the presence of road intersections and drastic speed decay in vehicles
Summary
Remote monitoring of vehicles moving in urban traffic environment significantly contribute to various applications in the field of telemedicine, road safety and mobile surveillance. Receiver-based schemes are well suited for dynamic environments, they result in significant end-to-end (ETE) delay [5] This is due to their waiting time criterion, where the relay vehicles are required to wait for certain time for each data packet before forwarding it further. This article proposes a receiver-based data forwarding protocol that uses geographic information of road intersections to assign a duration for which a relay vehicle stays in default forwarding state. The decision is based on the relative geographic progress of current and previous relay vehicles towards destination This is done with the aim to take into account the drastic decay in the speed of vehicles due to the road intersections and traffic signals encountered in urban VANETs. The proposed ILBFC is simulated in realistic traffic conditions and its performance is compared with other existing state-of-the-art routing protocols.
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