This paper presents a framework for including cognitive management
functionalities in the spectrum selection process for Opportunistic Networks
(ONs).The framework is based on a decision making functionality interacting with a
knowledge management block that stores and processes information about the
spectrum use. Different approaches for spectrum selection are discussed covering
specific cases including the capability to aggregate different bands and the possibility
to jointly select the spectrum and the network interface. Illustrative results of the
proposed framework are presented.