Section: 15.3 Structure of MBMS SAI
Content: The MBMS Service Area (MBMS SA) is defined in 3GPP TS 23.246[ Multimedia Broadcast/Multicast Service (MBMS); Architecture and functional description ]  [52]. It comprises of one or more MBMS Service Area Identities (MBMS SAIs), in any case each MBMS SA shall not include more than 256 MBMS SAIs. An MBMS SAI shall identify a group of cells within a PLMN, that is independent of the associated Location/Routing/Service Area and the physical location of the cell(s). A cell shall be able to belong to one or more MBMS SAs, and therefore is addressable by one or more MBMS SAIs. The MBMS SAI shall be a decimal number between 0 and 65,535 (inclusive). The value 0 has a special meaning; it shall denote the whole PLMN as the MBMS Service Area and it shall indicate to a receiving RNC/BSS/MCE that all cells reachable by that RNC/BSS/MCE shall be part of the MBMS Service Area. With the exception of the specific MBMS Service Area Identity with value 0, the MBMS Service Area Identity shall be unique within a PLMN and shall be defined in such a way that all the corresponding cells are MBMS capable.