ETSI TS 103 154定义了2300-2400 MHz移动宽带服务运行的系统要求 许可共享访问（LSA）下的频带。该频段分配给移动服务，并在全球范围内为IMT识别 在国际电联无线电条例中。LSA的目标是使移动/固定通信能够访问该频段 在CEPT国家的网络（MFCN），由于目前的使用情况，该频段的接入非常复杂，如 记录在ETSI TR 103 113[i.1]中（例如，当无法及时“重构”频带[i.2]）。LSA系统包括一个或多个现任者、一个或多个MFCN（LSA许可证持有人）以及启用 在现有公司和LSA许可证持有人之间进行协调，以便后者可以在不产生有害影响的情况下部署其网络 干扰本文件中的要求旨在作为LSA定义的第一步 系统架构规范。

ETSI TS 103 154 defines system requirements for operation of mobile broadband service in the 2 300 - 2 400 MHz band under Licensed Shared Access (LSA). This band is allocated to the Mobile Service and identified for IMT globally in the ITU Radio Regulations. The objective of LSA is to enable access to this band for mobile/fixed communication networks (MFCNs) in those CEPT countries where access to the band is complex due to Incumbent usage, as documented in ETSI TR 103 113 [i.1] (for example, when it is not viable to "refarm" the band in a timely manner [i.2]).An LSA system comprises one or more Incumbents, one or more MFCNs (LSA Licensees), and the means to enable coordination between Incumbents and LSA Licensees, such that the latter may deploy their networks without harmful interference. The requirements in the present document are intended as a first step towards the definition of LSA System architecture specifications.