Fuzzy Geocasting in Opportunistic Networks
Opportunistic Networks are composed of wireless nodes opportunistically communicating with each other following the store, carry and forward mechanism. These networks are designed to operate in an environment characterized by high delay, intermittent connectivity and non-guarantee of the end-to-end path between the sender and the destination. Opportunistic networks can play a crucial role, when cellular networks are heavily stressed and where infrastructure is unavailable due to terrorist attacks, wars, or natural disasters and censorship. Geocasting, where messages are scheduled to specific regions instead of individual devices, has a large potential in real-world communication systems. In this paper, we propose a fuzzy geocasting mechanism in opportunistic networks, termed as F-GSAF. The proposed protocol employs fuzzy attributes, that are very much likely to affect a network in the real world, to determine the next hop for the message. These attributes are Movement (direction and speed), remaining energy, and remaining buffer space. Mamdani is the fuzzy controller, which has been used in this work. Obtained simulation results confirm that the proposed F-GSAF protocol is more efficient than traditional routing protocols for opportunistic networks.
This work is supported in part by a grant from the National Science and Engineering Research Council of Canada (NSERC), held by the 3rd author, under reference number: RGPIN-2017-04423.
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