Presently, few important characteristics with ad hoc

Presently, the speedy advances in radio
technology, processor and memory have enabled the development of distributed
networks of inexpensive small nodes that are capable of computing, sensing and
wireless communication. Wireless sensor networks (WSNs) are collections of a
large quantity of small devices equipped with incorporated sensing and wireless
communication abilties. They’re taken into consideration as a completely unique
case of ad hoc networks with decreased or no mobility. Sensor networks share a
few important characteristics with ad hoc networks, for instance they share the
need for self-organization, wireless multi-hop operation, and time-variability
in topology. The flexibility within the wireless sensor network communication is
induced through the cross layering concept which decreases the quantity of
modularity via inter layer parameters exchange which improves the performance, reliability
and adaptability within the approach of wireless network communication. The
inter layer data exchange is employed to enable the choice of nodes that are
capable of efficient communication. However, the cross layering concept suffers
from security attacks on the nodes used for data forwarding. As wireless sensor
networks become more popular and extensively used, security will become a very
serious problem. Users do not want to expose their data to unauthorized people
as the disclosed data could be used for malicious purposes. This issue is even
more relevant to wireless environments where anyone can overhear a message sent
over the radio. It is vulnerable to insider and outsider attacks due to
collaborative and dynamic nature. In this paper, we propose a trust based cross
layering framework to provide defense against security attacks employing a
fuzzy logic based trust estimation mechanism, that is tailored to formulate the
empirical interpretation of inaccurate chances for calculating the reputation
in the nodes to ensure secure forwarding and reliable delivery of data. The
design principle is complete unified cross-layering such that both the
information and the functionalities of conventional communication layers are
melted in a single protocol.  we further
proposed the trust based fuzzy implicit cross layer protocol, a trust based
cross layer framework designed protocol, that uses multiple parameters that are
extracted through the inter layer information exchange so as to mitigate the
effects of security threats in an exceedingly wireless sensor network. The
proposed trust based fuzzy implicit cross layer protocol is compared with the
present protocols, that also achieved minimal security by altering their
routing semantics. The conducted experiments evaluated the security performance
of the protocols and also the results show that the proposed protocol
considerably outperforms the present protocols in terms of packet delivery.


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