DesCom: Routing Decision using Estimation Time in VDTN

Abstract

VDTN was proposed as a disrupting network which is established on the paradigm of the delay-tolerant network. VDTN uses vehicular nodes to convey messages as, it permits sparse opportunistic network connectivity, which is considered by the low node density where the vehicular traffic is sporadic, and no end-to-end paths exist between nodes. The message bundle is directed from the sender to the receiver node based on the routing protocol decision. While Routing protocols take decisions based on different metrics like Time to live, Location, Remaining Buffer Size, meeting probability, etc. In this paper, a routing protocol named DesCom is proposed for Vehicular Delay-Tolerant Network under a highly suppressed and sparse environment. DesCom takes the decision based on Message TTL, Transmission rate, and Estimation time. Estimation time is calculated in our previous work. The protocol defines whether to direct the message to the requested node or search the other more suitable node to carry that data bundles. After compiling multiple simulations with different numbers of vehicles and comparing DesCom with other routing protocols it is concluded that DesCom has the least buffer time with low latency along with good delivery probability.

Connectivity Analysis in Vehicular Ad-hoc Network based on VDTN

“…VDTN employs nodes of vehicles to carry packets because it provides for limited opportunistic connections and is characterized by a low value of density, intermittent vehicular activity, and no edge connectivity among nodes. The [56] offers DesCom, a routing protocol for VDTNs in a highly restricted and sparsely populated environment. This protocol bases its choice on the transmission rate, message TTL, and estimation time.…”

Bio-inspired Probabilistic Opportunistic Routing for Vehicular Delay-Tolerant Networks Using A Hybrid Swarm Approach

“…Recent probabilistic VDTN routing works, such as [29], use artificial intelligence to solve the trade-off between QoS metrics. DesCom [30] bases its SCF decision on time estimation, bundle TTL, and transmission rate. GR-PDR [31] solves the local maxima issue by using the delegation replication approach for both single and multiple copy forwarding, considering a buffer delivery priority.…”