sois application support services wg – fall 2009 meeting report
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26th-30th October 2009
Stuart Fowell
SOIS Application Support Services WG – Fall 2009 Meeting Report
SOIS Application Support Services WG – Fall 2009 Meeting Summary 2
Agenda 1/2
Monday 26th October AM:Latest Prototyping Activities
ESA (Chris Taylor)RUAG (Johan Otterström)SciSys/Astrium (Stuart Fowell)
Monday 26th October PM:SOIS In Practise
TM/TC Modules (Stuart Fowell)PUS, DTN and CFDP (Chris Taylor, Stuart Fowell)File Services, Stores and Mass Memory (Aitor Viana Sanchez)
APIs (Felice Torelli)DVS is not just for Plug-and-Play (Stuart Fowell)Matters Arising from WG Reviews
MTS & FPSS
SOIS Application Support Services WG – Fall 2009 Meeting Summary 3
Agenda 2/2
Tuesday 27th October AM:Matters Arising from Agency Reviews
TAS Outstanding RIDsDAS Outstanding RIDs
DAS, DVS and Device Packet Protocols (Stuart Fowell)DDPS Outstanding RIDs
DDPS and Application/Communication Synchronisation (Stuart Fowell)
Tuesday 27th October PM:Joint meeting with AMS
MTS Interoperability Testing (Stuart Fowell)
Wed 28th – Thurs 29th October:Plug-and-Play
Friday 30th October AM:Closing Plenary
Remaining Work Plan (Stuart Fowell)Green Book Updates?
SOIS Application Support Services WG – Fall 2009 Meeting Summary 4
Latest Prototyping Activities
SciSys/Astrium (Stuart Fowell)
RUAG (Johan Otterström)
ESA ECSS 1553 (Aitor Viana Sanchez)
SOIS Application Support Services WG – Fall 2009 Meeting Summary 5
SOIS and Space Protocols
TM/TC ModulesTM/TC Module treated as a deviceChris Taylor to review variety of 5-6 actual spacecraft implementations & summarise differences in architecturesUse this as basis for recommending different ways of how to use SOIS to access TM/TC modulesGreen Book will be updated to explain this
PUS, DTN and CFDPUses SOIS to access TM/TC modules and File StoresGreen Book will be updated to explain this
SOIS Application Support Services WG – Fall 2009 Meeting Summary 6
General Matters
ESA want to define concrete APIs from the abstract service interface
Will publish ANSI C API from SOIS Proof of Concept project before Spring 2010 Meeting
Device Virtualisation is valuable without Plug-and-Play
Not receiving enough attention yetGreen Book will be updated to explain this
SOIS Application Support Services WG – Fall 2009 Meeting Summary 7
Agency Reviews
TAS Red BookAll RIDs dispositionedUpdate Red Book and request issue as Magenta
DAS Red BookAll RIDs dispositionedAdd device-specific access protocolsRefine support for devices asynchronously emitting data & describeUpdate Green BookUpdate Red Book and request final Agency Review after further prototyping
DDPS Red BookAll RIDs dispositionedAdd support for synchronisation with subnetwork & describeAdd support for devices asynchronously emitting data & describeUpdate Green BookUpdate Red Book and request final Agency Review after further prototyping
SOIS Application Support Services WG – Fall 2009 Meeting Summary 8
File and Packet Store Services
File TransferChange definition of file-store to single onboard file-storeRemoves need for File Transfer Service
move & copy become part of File ManagementCFDP then is only a user of File ServicesStuart to update Red Book
Clarified directory and/or file lockingAitor to update Red Book primitives
Identified need for File Network Access Protocol & mapping onto Subnetwork Services
Necessary for interoperability between OBC and File StoreNone will be recommended in current issue of FPSS book
If one is identified, up-issue FPSS book to referenceIf one is specified, new separate book
Update Green Book (no FTS, requirement for FNAP but not spec’d now) StuartUpdate FPSS Red Book and put out for final Agency Review (Stuart)
SOIS Application Support Services WG – Fall 2009 Meeting Summary 9
Message Transfer Service
Profile of AMS mapped onto Subnetwork Packet ServiceNarrowing of use of primitivesProtocol optimisations included directly into AMS protocolsRemote AMS not required for spacecraft-only messaging
Red BookWG RIDs dispositionedAligned with AMS Red BookUpdate Red Book and request 1st Agency Review
ACTION: What to do about MIBs in SOIS Red Books (Chris, Stuart)
SOIS Application Support Services WG – Fall 2009 Meeting Summary 10
Joint SOIS ASS/SIS AMS Meeting
Planned MTS Interoperability Testing
Test two implementations of the MTS profile of AMS
Testing is a profile of AMS Interoperability Testing Plan
Interoperability point is two implementations running on separate onboard processors interoperating over a subnetwork using a common SOIS Subnetwork Packet Service
Single implementation of registrar and configuration server running on one processor
Agreed to use a SpaceWire Packet Service as Transport ServiceNeed to agree on a SpaceWire Packet Protocol – no standard available at this point in timeUse SpaceWire IP TunnelImplementations: JPL’s ION and ESA/SciSys MTSUpdate required to both related to locating other implementation’s registrarTest either being used as registrar
SOIS Application Support Services WG – Fall 2009 Meeting Summary 11
Actions
Review variations in actual spacecraft implementations & summarise differences in architectures (Chris)Update Green Book to recommend different ways of how to use SOIS to access TM/TC modules (Stuart)Update Green Book to recommend how PUS, DTN and CFDP use SOIS to access TM/TC modules and File Stores (Stuart)Update Green Book to describe how Device Virtualisation is valuable without Plug-and-Play (Stuart)Update TAS Red Book with RID Dispositions (Stuart, 1 Dec 09)Update DAS Red Book with RID Dispositions (Stuart, 1 Dec 09)Update Green Book with DAS device access protocols and async device data emittance (Stuart)Update DDPS Red Book with RID Dispositions (Stuart, 1 Dec 09)Update Green Book with DDPS subnetwork synchronisation and async device data emittance (Stuart)Update FPSS Red Book with RID Dispositions and FTS removal (Stuart, Aitor, 1 Dec 09)Update Green Book with removed FTS and note on file network access protocol (Stuart)Decide what to do about MIBs in Red Books (Chris, Stuart, 1 Dec 09)Update Green Book with V&V (Felice, Chris)Identify & manage contributions to Green Book updates (Chris)Update Green Book with overall spacecraft Plug-and-Play architecture (Felice)Working Group review of Issue 0.1 of DVS Red Book (All SOIS, ESA AOCS)Update schedule for DES (affected by PnP) (Chris, Stuart)
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