Mission Operations Reference Model. Draft ... - CCSDS

DRAFT RECOMMENDED PRACTICE FOR MISSION OPERATIONS REFERENCE MODEL4.2.3 HIGH-LEVEL RECEPTION SEQUENCEThe high-level reception sequence up the stack is shown in figure 4-4.Transport Layer MAL Access Control MO Service Layer Consumer/ProviderApplicationReceive messageCheckPass message upwardsInvoke relevant application aspectFigure 4-3: High-Level Reception Sequencea) The Transport layer receives a message from another entity (step not shown).b) The message is decoded and any transport-specific checks are performed before it ispassed upwards to the MAL.c) The MAL first checks that the message may be received using the Access Controlcomponent. The rules of the Access Control component are deployment specific; it isa deployment decision as to what must be checked before a message is received.d) The MAL then locates the relevant internal service provider component before themessage is then passed up to the MO Service Layer.e) The MO Service Layer converts that message into a relevant operation invocation tothe Application (consumer or provider).CCSDS 520.1-R-1 Page 4-4 October 2009