The Steady-State Distribution of Rehealing Delay in an Intermittently Connected Highway VANET

A vehicular ad hoc network may suffer from intermittent connectivity. When a network disconnection occurs during message delivery, it can be restored by a temporal relay, i.e., a store-carry-forward (SCF) relay. There have been numerous previous works discussing the rehealing delay, which is the del...

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Bibliographic Details
Published in:IEEE transactions on vehicular technology 2018-10, Vol.67 (10), p.10010-10021
Main Authors: Huang, Jeng-Ji, Tseng, Yu-Ting
Format: Article
Language:English
Subjects:
Delay
Delays
Dependence
Electromagnetic compatibility
embedded Markov chain (EMC)
Markov analysis
Markov chains
Markov processes
Mobile ad hoc networks
Queuing theory
rehealing delay
Relay
Relays
Restoration
Roads
Steady state
steady state distribution
store-carry-forward (SCF)
Vehiclular ad hoc network (VANET)
Vehicular ad hoc networks
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Summary:A vehicular ad hoc network may suffer from intermittent connectivity. When a network disconnection occurs during message delivery, it can be restored by a temporal relay, i.e., a store-carry-forward (SCF) relay. There have been numerous previous works discussing the rehealing delay, which is the delay required to restore a network disconnection by an SCF relay. However, most of them neglect the dependence of the restoration of a network disconnection on that of the previous one. As a result, their results would become invalid when a long-distance delivery of messages is necessary. To address this problem, we discuss how the restoration of a network disconnection can be affected by that of the previous one, from which an embedded Markov chain is developed to obtain the steady-state probability distribution of rehealing delay. Simulation results show that our analysis is highly accurate, as compared to previous works.
ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2018.2865500