The scope of the present document is to define the high level system requirements for reconfigurable Radio Equipment enabling the provision of Radio Applications except for reconfigurable mobile devices which are covered in ETSI EN 302 969 [i.4], ETSI EN 303 095 [i.5], ETSI EN 303 146 parts 1 [i.6] to 4 [i.9]. The work is based on the Use Cases defined in ETSI TR 103 062 [i.1], ETSI TR 102 944 [i.2], ETSI TR 103 585 [i.3] and ETSI EN 302 969 [i.4].