ETSI为这些标准设计了一个模块化结构。每个标准都是结构中的一个模块。模块化结构如ETSI EG 201 399[i.1]所示。本文件基于ETSI TBR 041[4]。本文件中的技术要求适用于指令2014/53/EU[10]第3.2条，涉及有效使用分配给地面/空间无线电通信和轨道资源的频谱，以避免有害干扰。这些要求分为两大类:排放限值:保护其他无线电服务免受MES在正常使用中产生的有害干扰。 MES控制和监控功能（CMF）:保护其他无线电服务免受来自MES的不必要传输。每个MES中的CMF能够响应网络控制设施（NCF）对其S-PCN的命令。接收机性能规格:在相邻信道和/或相邻频带中存在其他高功率信号的情况下，能够接收所需信号。注:S-PCN的网络控制设施（NCF）要求包含在ETSI中 ET 300 735[5]。为保护分配给该卫星星座的频谱，使用给定卫星星座确定用户地面站的参数被认为是由卫星运营商或卫星网络运营商负责的。

ETSI has designed a modular structure for the standards. Each standard is a module in the structure. The modular structure is shown in ETSI EG 201 399 [i.1]The present document is based on ETSI TBR 041 [4].The technical requirements in the present document are applied under articles 3.2 of the Directive 2014/53/EU [10], concerning the effective uses of the spectrum allocated to terrestrial/space radio communication and orbital resources so as to avoid harmful interference.These requirements are in two major categories:emissions limits:to protect other radio services from harmful interference generated by the MES in normal use.MES Control and Monitoring Functions (CMF):to protect other radio services from unwanted transmissions from the MES. The CMF in each MES is capable of answering to commands from the Network Control Facilities (NCF) for its S-PCN.Receiver performance specifications:to enable reception of a wanted signal in the presence of other high power signals in the adjacent channel and/or adjacent band.NOTE:The requirements for Network Control Facilities (NCF) for S-PCN are contained in ETSI ET 300 735 [5].The determination of the parameters of the user earth stations using a given satellite constellation for the protection of the spectrum allocated to that satellite constellation, is considered to be under the responsibility of the satellite operator or the satellite network operators.