Improving Bivious Relay Selection in Vehicular Delay Tolerant Networks

In Vehicular Delay Tolerant Networks, a number of Roadside Units (RSUs) are deployed along the road and connected to the infrastructure network to provide various services to the vehicles on the road. However, it is hard to cover the long highways completely, due to the deployment cost. In such unco...

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Bibliographic Details
Published in:IEEE transactions on intelligent transportation systems 2018-03, Vol.19 (3), p.987-995
Main Authors: Ahmed, Syed Hassan, Mu, Dixiao, Kim, Dongkyun
Format: Article
Language:English
Subjects:
Data communication
Delay
Delays
Downlink
downlink data
Highways
Multiple criterion
multiple relays selection
Optimization
Relay
Relays
Roads
target vehicles
VDTNs
Vehicles
Vehicular ad hoc networks
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Summary:In Vehicular Delay Tolerant Networks, a number of Roadside Units (RSUs) are deployed along the road and connected to the infrastructure network to provide various services to the vehicles on the road. However, it is hard to cover the long highways completely, due to the deployment cost. In such uncovered areas between two neighboring RSUs, a connection between a vehicle and an RSU cannot be established. To cope with this, few schemes have been proposed recently, enabling one RSU to select one relay vehicle to provide continuous communications for the vehicle moving in the uncovered area. However, the selection of an appropriate relay vehicle for pre-storing maximum data is an open issue. In this paper, we, therefore, propose an adaptive multiple-relay selection scheme that allows RSU to select relay vehicles while taking most relevant multiple criteria into the account. The relay selection triggers when a vehicle is unable to receive all the requested data from the corresponding RSU. The simulation results show that our scheme enables vehicles to retrieve maximum amount of the requested data in uncovered areas.
ISSN:1524-9050
1558-0016
DOI:10.1109/TITS.2018.2791925