[Sea-sa] SAWG Reference Architecture planning session - minutes

[Shames, Peter M (312B)]

See attached minutes from today’s telecon.  If you see issues or errors please let me know .

Thanks for the support, Peter

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SAWG Reference Architecture planning session – Telecon, 1 Dec 15

Attendees: Roger Thompson, Ramon Krosley, Hwang Yonghui, Peter Shames

Agenda

  *   Discuss overall approach and forward plan
  *   Discuss MOIMS approach
  *
Discuss SOIS approach
  *   Forward work and next meeting

Minutes

Discuss overall approach and forward plan

  1.  Reviewed the top level materials from the 10 Nov 2015 working session
     *   Scope of Work and Proposed Approach for WG efforts
     *   SCCS-ARD (CCSDS 901x1m1)  - Figure 7-4
     *   Cross Support / Mission Operations Interactions using Standard SLE / SM Services
  2.  Discussed the possible adoption of UML/SysML, but decided to shelve it for now due to constrained time and resources
     *   Agree on value of developing SysML Profile for the future RASDS revision in Phase 2
  3.  Discussed the general features of the Reference Architecture for Space Data Systems (RASDS) using some of the available diagrams
  4.  Confirmed agreement to use existing RASDS PPT approach to align with SCCS-ADD/ARD
  5.  Agree to align all new materials with current PPT “cartoon” template (SCCS-ARD materials including template, pg 2, provided here)

Discuss overall MOIMS approach

  1.  Reviewed the MOIMS Mission Operations Services Overview (from MOSC 520x0g3)
  2.  Discussed the relationships among the elements as depicted
  3.  Discussed the fact that this is just an overview example and that many different mission configurations are possible
  4.  Discussed the evolving nature of the MOIMS functional models and that some functional groups are more developed than others
  5.  Discussed that Nav / OD is well understood, the mission planning is evolving, and that some functional groups could be further aggregated to reduce complexity of top level diagrams
  6.  Confirmed agreement for Phase 1 of this effort to limit the MOIMS to the ground and SOIS to space
  7.  Agreed to largely stick to what is already documented, but also to propose new [Future] funcitons / standards where their role appears to be clear
     *   Agree to review any such extensions with the SM&C WG
  8.  Agreed to develop at least one MOIMS / SM&C top level diagram for the next meeting
  9.  Reviewed the Nav / OD diagram from the Nav WG and agreed that the level of detail in this diagram is probably about correct for the lowest level of decomposition that we will develop
  10. Reviewed Nestor’s "MO Services” diagram and agreed to stick to the defined SM&C / MO service names and functions
  11. Discussed the need to cover all of MOIMS and not just SM&C and Nav, needs further thought & discussion

Discuss overall SOIS approach

  1.  Reviewed the SOIS Service Architecture  (from 876x0r0)
  2.  Discussed the relationships among the elements as depicted
  3.  Discussed the fact that this is just an overview of the service layering and that many different mission configurations are possible
  4.  Discussed the SOIS approach of defining abstract services and (largely) exchanges of abstract data type
  5.  Reviewed the “Plug and Play” View of SOIS Architecture (from 850x0g1)
  6.  Agreed that this is the right level of detail, but that we need to identify the types of the data exchanged among these functions
  7.  Discussed, in general, the relationship between SOIS and MOIMS (defered until Phase 2)
  8.  Agreed on an approach to include future work, where required, in the document and in the figures
     *   Use [Future] prefix marking in the document, as in SCCS-ARD, for document references
     *   Use [F] suffix in the figures to distinguish future functions, protocols, data structures
  9.
Agreed to develop at least one SOIS top level diagram and one next level diagram for the next meeting

Forward work and next meeting

  1.  Roger will develop a top level view of the MOIMS layered service architecture
  2.  Ray will develop a similar top level view of the SOIS layered service architecture
  3.  Yonghui will develop a view of the “Plug and Play” parts of the architecture
  4.  Peter will distribute the RASDS template and SCCS-ARD materials
  5.  Peter will setup a Doodle poll for the next meeting, either 12 or 19 Jan 2016

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