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—Cooperative spectrum sensing is envisaged to increase reliability in cognitive radio networks. Several users cooperate to detect the availability of a wireless channel. In this framework, some malicious users may affect the decisions taken by the cognitive users by providing false information, introducing spectrum sensing data falsification (SSDF). In this(More)
Hierarchical topologies have been suggested to increase network stability in mobile ad hoc networks (MANETs). In a hierarchical ad hoc network nodes are clustered in more stable virtual groups. Ideally, the members of these groups can establish links with longer lifetimes with the leader of the group, clusterhead. However, in highly mobile ad hoc networks,(More)
On-road-communications are increasing in relevance, due to the variety of applications for traffic management systems (TMS) and road safety. This interest is enforcing relevant efforts from research community and standardization bodies to support V2V (vehicle to vehicle) and V2I (vehicle to infrastructure) communications. In this framework, an hybrid(More)