SPACECRAFT ONBOARD
INTERFACES SERVICES
(SOIS) AREA
Chris Taylor (AD)
Stuart Fowell (DAD)
07-Apr-2014-cesg-1
SOIS Area Report - Current Working Groups
1. Application Support Services WG
2. Wireless WG
3. Subnetwork Services WG
The SOIS area covers onboard communication services with the intention of
standardising H/W and S/W interfaces between avionics elements & devices.
Wireless activities cover intra-spacecraft, proximity, AIV and RFID
Our work is aligned with the European SAVOIR initiative and the WG includes
representatives from the US SUMO initiative
07-Apr-2014-cesg-2
SOIS Area Report
B. Meeting Demographics
Wireless
App Suppt Svcs
ASI
CNES
1
CNSA
1
CSA
1
DLR
ESA
2
2
NASA
4
5
RFSA
2
1
INPE
JAXA
UKSA
2
Other
TOTAL
11
10
*2 via telecon; CSA & 1 NASA
Meeting Duration
5
5
Agency Diversity
6
4
07-Apr-2014-cesg-3
SOIS Area Report
Application Support Services Working Group
Goal: Develop SOIS Application Support layer services and if appropriate protocols; develop
supporting electronic data sheet schema and dictionary of terms
Working Group Status
•
•
•
Device Enumeration Service Magenta Book published
•
Draft green Book initiated
Electronic Data Sheets Red Book & associated XML Schema - Draft Red book final WG editing
Progressing Common Dictionary of Terms Red Book & associated ontology – Draft red book
available
Status:
Comment:
OK
CAUTION
PROBLEM
Resources affecting
schedules
07-Apr-2014-cesg-4
SOIS Area Report
Application Support Services WG (cont.)
Progress
•
Red book on Schema being finalised after merge and working group review
•
Still need to add conformance proforma but have way forward
•
Dictionary of terms Red book reviewed complete and ready to submit
•
SANA entries – would like to establish mechanism for input of OWL files
•
Green book started but behind schedule
•
Several presentations providing implementation feedback
•
JSC AES on Schema
•
Bright ascension on SOIS based Cubesat
•
ESA on implementation by European primes
•
Scisys on new ESA study
•
Sumo – EDS to continue within NASA
•
RapidIO SOIS mapping proposal
•
•
•
Acknowledged that we have an iterative process where feedback from implementations
is necessary to progress – chicken and egg and lengthening of BB development
Several issues discussed on extensions and constraints of present schema
Baselined approach for “interoperability testing”
07-Apr-2014-cesg-5
SOIS Area Report
Application Support Services WG (cont.)
Planning
• Process Agency reviews of Red books
• Develop the new green book on EDS
• Develop infrastructure and device specs for interoperability testing (JSC)
• Develop a series of example EDS in association with suppliers
• Update Schema to incorporate MTS
• Improve liaison with SM&C and SEA areas for
• Continue interaction with Savoir and US groups
•
Incorporate feedback from implementers into 2nd version of Red book
(this is a lot of work)
•
As part of subnet services 5 year review, perform SOIS Subnet mapping to
other datalink protocols (Ethernet, Rapidio, raw 1553, TTtech)
•
Explore US proposal to release a Orange book on Cfs mapping to SOIS
along with a publicly available implementation and accompanying tool-set
07-Apr-2014-cesg-6
SOIS Area Report
Wireless Working Group
Goal: Develop wireless recommendations for space applications
Working Group Status:
•
•
•
•
RFID encoding Redbook
Green book issue 2 under publication
Wireless Local Area Network Blue Book delayed
The SSIART (joint test-bench) MOU Signed.
Status:
Comment:
OK
CAUTION
PROBLEM
New interest and
support
07-Apr-2014-cesg-7
SOIS Area Report
Wireless WG
Goal: Develop wireless recommendations for onboard space applications
Working Group Progress:
•
The Green Book update to integrate high-speed wireless communication technologies and use-cases
has faced image copyright issues; these were resolved during the meeting and an updated GB version
(with copyright information) will be provided again to the CCSDS editor after the technical meeting.
•
The work on the “RFID Tag Encoding Blue Book”, with a lead from NASA & FSA and with ESA & CSA as
participants, has been started in Spring and the first draft version has been completed and internally
reviewed at this meeting. This reviewed draft will be reviewed by Agency stakeholders (e.g. Mission
Integration and Operations Office, FSA, ESA), where the feedback will be incorporated into a second
draft which will then be reviewed by the WG before being released to AD.
•
Planning for the development of the “Wireless Local Area Network Blue Book”, with a lead from NASA
& FSA and with ESA & CSA as participants, has started. The schedule for the production of this book has
been updated to reflect the recent official acceptance by both NASA and FSA, and actual start date
(Spring 2015)
•
Proposal to form a BoF to investigate the need for standardization in the area of Time triggered
networks including the interfacing and bridging to Wireless
•
The SSIART (Smart-Sensor Inter-Agency Reference Testbench ) MOU has finally been signed
by all parties
07-Apr-2014-cesg-8
SOIS Area Report
Planning
Green Book
•
Spring 2014:
Issue 2 Published
WWG RFID Encoding Blue Book:
•
•
•
•
Fall 2014:
Final draft#1 RFID Encoding Blue Book
Spring 2015:
Final draft#2 RFID Encoding Blue Book
Spring 2016:
Final Agency review completion
Fall 2016:
CMC approval
WWG Wireless Local Area Network Blue Book:
•
•
•
•
Fall 2016:
Final draft#1 WLAN Blue Book
Spring 2018:
Final draft#2 WLAN Blue Book
Spring 2019:
Final Agency review completion
Winter 2020:
CMC approval
Deterministic Networks BOF:
•
Fall 2016
Initial Feedback
07-Apr-2014-cesg-9
SOIS Area Report: Summary
APP WG
• Electronic data sheets and Dictionary of terms Red books soon ready for
submission to CESG for subsequent Agency review
• EDS Green book slow start
• Implementation feedback arriving and will require some updates
• More Resource would be appreciated otherwise schedules will extend
Wireless WG
• Redbook on RFIF encoding solid progress
• Green book V2 issues with copyright resolved
• High speed wireless Lan Red book initiated after delay
• New resources from CNSA and FSA
• SSIART test-bed agreements finally cleared
• New BOF proposed to work on Time triggered Lans and wireless interconnect
Subnet WG
• Need to start a 5 year review and introduce feedback
• Will be difficult unless more resources become available
Groups continue to work between meetings with regular telecons
07-Apr-2014-cesg-10
• SOIS Area Backup Slides
07-Apr-2014-cesg-11
SOIS Area Report
Application Support Services WG
Near Term Planning
Activity
XML Specification for Electronic Data Sheets
for Onboard Devices Blue book
Electronic Data Sheets XML Schema
Common Dictionary of Terms for Onboard
Devices Blue book
Common Dictionary of Terms ontology
EDS Green book
Milestone
Planned end date
Agency review
RB 1 Complete
Input to SANA
Spring 2015
Agency review
RB 1 Complete
Input to SANA
Spring 2015
Draft v1
Spring 2015
Fall 2014
End 2014
07-Apr-2014-cesg-12
Wireless SSIART
Smart-Sensor Inter-Agency Reference Testbench
•
SSIART project, proposed in 2011 by NASA and ESA,
was finally approved by NASA HQ & ESA HQ in October 2014
•
History: In 2010, the CCSDS SOIS Wireless Working Group was searching for a way
to produce fair comparisons between several wireless technologies for sensors (e.g.
PHY/MAC technologies, routing algorithms, power consumption, frequencies,
responsiveness…). The available solutions, e.g. internal developments and
simulations, do not offer the required comparative framework because they are
either highly implementation-dependent or data is simply missing for a proper
simulation. At the same time, ESA and NASA were looking for collaborative
activities in the field of wireless communications. This led the group (made of ESA,
NASA and industrials) to propose a collaborative activity that would result in solving
this precise issue.
•
The Smart Sensor Inter-Agency Reference Testbench (SSIART) shall provide the
space Agencies and the Industry with a reference platform to test wireless sensor
technologies in real representative applications, while promoting them at the same
time. In other words, it is to assist in the joint evaluation of potential technology
and commercial devices, agreed to pursue the definition of a Smart Sensor InterAgency Reference Testbench.
07-Apr-2014-cesg-13
SOIS Area Report
Application Support Services WG (cont.)
Feedback from implementers and longer term planning
•
•
•
•
•
•
Its clear that SOIS outputs have generated quite some interest in the community
The SOIS layered architecture allows highly diverse implementations to target a more
common and standardised approach – this can only benefit everyone
There is some hesitancy from larger players who, while wanting the benefits of multisourced standardised components, also want to keep their implementations proprietary
The EDS initiative may well be the correct way forward as it allows standard devices to be
mapped to different implementations
An EDS can be used for many different purposes and could also be extended to cover other
aspect of a device (not proposed in CCSDS)
From the feedback received so far we will need to make some changes and additions, at
the same time we must keep the (13) recommendations consistent
07-Apr-2014-cesg-14
Proposal for new BOF
•
Current human rated vehicles e.g. the ISS use a relatively ad-hoc mix of Time triggered
(Milbus), wired asynchronous (Ethernet) and Wireless (802.11) communications technologies
to support a variety of applications:
• Command and control, Science date, Audio and Video, Crew health monitoring, Robotic control
•
Such a mix of services serves to indicate the types of applications that now need to be
supported and will required in future exploration missions.
•
There is a clear trend to support these services by use of a single bus able to handle multiple
traffic types at high rate. This reduces the number of interfaces necessary for each end-item.
•
Several emerging technologies look promising and able to fulfill a mix of synchronous and
asynchronous traffic including Time-Triggered Ethernet (TTE), Time-Triggered Protocol (TTP)
and SpaceFibre (SpF). Wireless technology providing all capabilities is in its infancy but
seamless communication between wired and wireless networks is highly desirable.
•
The wireless group has proposed a BOF to evaluate these new technologies with a view to
standardising their use in space
07-Apr-2014-cesg-15
High Data-Rate Proximity Communication and
Sensing Use Cases
•
•
•
•
•
•
EVA
• Telemetry, audio, and video data from suit
• Must support mesh with point-to-point link between astronauts or
astronauts and robotic assistants
• Need to have mesh relay capability to reduce or eliminate outages or
extend range of EVA
Tele-Robotics
• Telemetry, video
• Video may need to be raw data to minimize latency for critical control
Automated rendezvous and docking
• Telemetry, audio, and video
• Video may need to be raw data to minimize latency
Sensor networks
• High-bandwidth telemetry data from internal or external sensors
• High data-rate backhaul for low data-rate sensor network gateways
External payloads
• More and more payloads wanting wireless access
• Many payloads have high data-rate requirements
Teleconferencing between vehicles
07-Apr-2014-cesg-16
RFID Tag Encoding Standard
• Operational use of RFID by NASA and FSA
• CCSDS tag encoding standard will maintain compatibility with existing
on-orbit tags and provide extension of namespace for growth
• Experimental evaluation: REALM-1 (RFID-Enabled
Autonomous Logistics Management) proposed as ISS
Utilization experiment
• CCSDS tag encoding standard will permit Exploration evaluation of
•
encoding options and associated functionality
On-going discussions regarding international experiments
17
07-Apr-2014-cesg-17
High Data-Rate Communication and
Sensing Examples
18
07-Apr-2014-cesg-18
High Data-Rate Communication and
Sensing Examples
19
07-Apr-2014-cesg-19
SOIS response to CMC
•
Appl. Support WGs has no activities identified as part of FP beyond 2015. Is it anticipated that
all goals will then be achieved and the group has no further activity ?
– SOIS has been careful to obtain resources before pushing forwards with new
work items and this may give a false impression to the CMC on what is planned
– If required we can list a series of extensions and future work to take us way
beyond the present near term vision
– As a heads up we can state that the SOIS services must evolve in response to
implementation feedback and development of electronic data sheets will take
many years to mature and for the full potential to be realised
SOIS response to CMC
•
The SOIS Area has only one WG (Wireless) and no activities identified as part of FP beyond 2017. Is it
anticipated that all goals will then be achieved and the group has no further activity ?
– The wireless group has 2 Blue books and one green book under development and the
schedules have been updated following a new influx of resources from NASA, RSA,
and CSA
– The RFID encoding Blue book should l be finalised in 2016 but the WLAN will not be
completed before 2020
– A new SIG has been proposed to evaluate the use of deterministic networks required
for future exploration missions, this is likely to lead to significant new work
•
Should the group be disbanded earlier and the WG activities be re-allocated to another area
(Wireless  SLS?)?
– The rational behind this question is not understood as it could also be applied to other
groups – is there a technical reason to do this?
– the SLS area is anyway overloaded, and it may be more appropriate to move any
relevant SLS groups to SOIS and thus even the load on the SLS area director
SOIS response to CMC
•
More globally, only short term (2014-2015) workplan defined. Is this area required beyond
2015? Should CCSDS maintain a role in onboard interface standards?
– The updated work plan take us well beyond 2020, so yes we need
this area after 2015
– The CCSDS has undertaken this area of activity and we now have
many users and implementations. it is therefore incumbent on
CCSDS to maintain these standards and evolve them according to
Industry and Agency feedback
– It is acknowledged that the SOIS work is innovative but this is in
direct response to our ‘users’ where the need to improve the
standardisation within the onboard avionics has been clearly
expressed
SOIS response to CMC
•
Future developments for onboard “Standard Avionics Architectures” were mentioned in the
2014 CMC spring meeting (SUMO). Is this a viable direction; should CCSDS get involved in
standardising onboard architectures?
– A “STANDARD Avionics architecture” is not foreseen by SOIS but a
‘REFERENCE communications architecture’ was developed to locate the SOIS
services and then apply the electronic data sheets
– Within the CCSDS we need a “Reference architecture” which is able to locate
ALL CCSDS books and this will need to cover ground, the space-link and the
onboard system
SOIS response to CMC
•
Appl. Support WGs has no activities identified as part of FP beyond 2015. Is it anticipated that
all goals will then be achieved and the group has no further activity ?
– The SOIS area has always been careful to obtain resources before pushing
forwards with new work items and this may give a false impression to the CMC
on what is planned
– The work being performed is very ambitious and has generated interest from
many quarters (Savoir, SUMO, Rapid I/O, Tttech, SPA) and many different
disciplines (Avionics, GNC, flight software, reprogrammable devices, spacecraft
databases, operations and AIT) as well as other CCSDS areas SM&C, SEA
– It will take time for the full scope of the work to be appreciated but it is clear
that we will be requested to update and extend the present work (We are
already receiving feedback from European primes and US groups )
– There are many new activities that could and should be initiated but this
depends on feedback and he level of resources.
– In particular, the development of electronic data sheets will take many years to
mature and for the full potential to be realised