The present document specifies the system architecture for operation of mobile broadband service in the 2 300 MHz - 2 400 MHz band under Licensed Shared Access (LSA) [i.2] and [i.3], aimed at enabling access for mobile/fixed communication networks (MFCNs) in those CEPT countries where access to the band is foreseen but cannot be provided without restrictions due to Incumbent usage, as documented in ETSI TR 103 113 [i.1]. Application to other bands is not precluded and depends on future regulatory decisions.

The documented system architecture includes definition of the logical elements, reference points and functions supported by the architecture, and the definition of the procedures and procedure flows. The present document has been developed following, and in accordance with, the System Requirements for LSA as documented in ETSI TS 103 154 [1].