SOIS Application Support Services WG – Fall 2009 Meeting Report

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


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?


Latest Prototyping Activities

SciSys/Astrium (Stuart Fowell)

RUAG (Johan Otterström)

ESA ECSS 1553 (Aitor Viana Sanchez)


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


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


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


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)


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)


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


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)

SOIS Application Support Services WG – Fall 2009 Meeting Report

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