QoS routing and rerouting optimisation in cognitive network Online publication date: Mon, 02-Mar-2015
by Xingwei Wang; Hui Cheng; Min Huang
International Journal of Computer Applications in Technology (IJCAT), Vol. 49, No. 3/4, 2014
Abstract: The human interventions in the network should be reduced as much as possible to alleviate the network complexity. Through mimicking the cognitive behaviours of human brains, the cognitive network concept is proposed to improve the scalability, self-adaptation, self-organisation, and self-protection of the network. In this paper, based on the cognitive science model, we design the cognitive behaviours for the network nodes to benefit the quality-of-service (QoS) routing and rerouting optimisation. We propose a QoS routing protocol oriented to cognitive network, named as CogRT which addresses the rerouting issue as well. CogRT is a distributed hop-by-hop routing protocol. Inspired by the small-world phenomenon, the experiential route information is collected and stored at each node to benefit the future route selection. We implement and evaluate CogRT in NS2 platform. The results show that CogRT has achieved remarkable performance improvements over the protocols where no cognitive behaviours are exploited.
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