The present document addresses different technical possibilities for local high-quality wireless networks (nomadic or fixed) to access spectrum on a shared basis during a certain time period ranging from short-term (e.g. some days to some weeks) to long-term (e.g. some months to some years). Also the present document describes high-level use cases@ review the feasibility of existing spectrum sharing frameworks@ and@ if required@ propose evolved@ extended or new technical solutions for spectrum sharing and network architectures addressing different network topologies and device types.