Section: 30.3 Structure of Area Session ID
Content: The concept of Area Session ID is defined in 3GPP TS 23.247[ Architectural enhancements for 5G multicast-broadcast services ]  [140]. Area Session IDs are used for MBS sessions with location dependent content. An Area Session ID together with an MBS Session ID (i.e. TMGI or Source Specific IP Multicast address) shall uniquely identify an MBS session in a specific MBS Service Area. NOTE: For a location-dependent MBS session, the same MBS Session ID but a different Area Session ID are used for each MBS Service Area. Different MB-SMFs and/or MB-UPFs can be assigned for different MBS service areas in an MBS session. An Area Session Identity shall be a decimal number between 0 and 65535 (inclusive).