本文件规定了在许可共享接入（LSA）[i.2]和[i.3]下，在2300 MHz-2400 MHz频段运行移动宽带服务的系统架构，目的是在CEPT国家实现移动/固定通信网络（MFCN）接入，这些国家预计会接入该频段，但由于现有使用情况，无法在没有限制的情况下提供该频段，如ETSI TR 103 113[i.1]所述。不排除适用于其他波段，这取决于未来的监管决定。文件化的系统架构（architecture）包括架构（architecture）支持的逻辑元素、参考点和功能的定义，以及程序和程序流的定义。本文件是根据ETSI中记录的LSA系统要求编制的 TS 103 154[1]。

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].