TITLE:
Void Aware Position Based Opportunistic Routing for QoS in Mobile Ad Hoc Networks
AUTHORS:
V. Raji, N. Mohan Kumar
KEYWORDS:
Mobile Ad Hoc Network, Opportunistic Forwarding, QoS Routing, Void Alleviation
JOURNAL NAME:
Circuits and Systems,
Vol.7 No.8,
June
15,
2016
ABSTRACT: The unique anywhere,
anytime wireless communication support offers, tremendous potential for the
next generation of applications in a Mobile Ad-hoc Network (MANET). The Quality
of Service (QoS) has been the ever demanding task of wireless communication to satisfy
the application requirements. Geographical routing employs a greedy forwarding
technique to deliver the packets to the destination and to owe the
communication void, it fails to render the expected level of QoS. Opportunistic
routing technique effectively utilizes the advantages of broadcasting nature of
thewireless medium and selects a
set of forwarding candidates instead of relying on a greedy node.To improve the efficiency of QoS
routing in sparse and highly dynamic network topology, this paper proposes the
Void-Aware Position based Opportunistic Routing (VAPOR). The VAPOR maintains
2-hop neighbor information to take a routing decision, but it is limited to
1-hop informationwhen the node
density is high. It efficiently balances the storage overhead and communicationdelay due to void and it increases the
network throughput even under a sparse network. To provide a certain assurance
level for packet reachability, VAPOR decides the potential forwardersbased on the forwarding probability
that measures link stability, capacity, and connectivity factor. It adaptively
favors a path that avoids frequent link failure and unreliable link usage. By
limitingthe propagation area of
duplicate packets, VAPOR reduces wastage of network resources, and ittakes the
advantage of concurrent batch forwarding to avoid further duplication and
unnecessary delay.