Abstract
Security is another crucial aspect of providing QoS since the existence of malicious nodes present all kinds of threats to MANETs. Although a number of mechanisms have been proposed for protecting MANETs, most of the solutions are only effective for a particular kind of attacks or provide security at the cost of sacrificing QoS. In this paper, we propose a trust-based secure QoS routing scheme by combining social and QoS trust. The primary approach of the proposed scheme relies on mitigating nodes that exhibit various packet forwarding misbehavior and on discovering the path that ensures reliable communication through the trust mechanism. The scheme would select the best forwarding node based on packet forwarding behavior as well as capability in terms of QoS parameters, such as residual energy, channel quality, link quality, etc. Simulation experiment using Network Simulator-2 (NS2) and under various network conditions show that mixing social and QoS trust parameters can greatly improve security and quality of service routing in terms of overhead, packet delivery ratio and energy consumption.
Highlights
MANET is a self-organizing, dynamic, infrastructure-less network consisting of a set of wireless nodes that communicate with one another over one or more connections or hops without the need of a central authority
Security is another crucial aspect of providing QoS since the existence of malicious nodes present all kinds of threats to MANETs
We propose a trust-based secure QoS routing scheme by combining social and QoS trust
Summary
MANET is a self-organizing, dynamic, infrastructure-less network consisting of a set of wireless nodes that communicate with one another over one or more connections or hops without the need of a central authority. A major challenge for MANETs is the design of a secure and efficient routing protocol that can ensure the overall quality of service during the routing process as MANET nodes communicate with each other only when they are located within the communication range of each other. Trust-based routing has been considered as an effective measure to deal with security threats caused by malicious nodes through detecting and isolating un trusted nodes in MANETs. The proposed scheme would select a forwarding node by considering channel quality, link quality and residual energy in order to establish an optimal path in a very dynamic environment and detect intrusions by using the trust of neighboring nodes to mitigate threats by nodes misbehave in packet forwarding during the routing process. The proposed solution relies on the trust mechanism to provide reliable performance and secure links for data transmission and energy efficiency
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