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Chris Taylor (AD)Stuart Fowell (DAD)

SPACECRAFT ONBOARD INTERFACES SERVICES

(SOIS) AREA

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1. Application Support Services WG

2. Wireless WG

3. Subnetwork Services WG

SOIS Area Report - Current Working Groups

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

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SOIS Area Report B. Meeting Demographics

Wireless App Suppt Svcs

ASI    

CNES 1  

CNSA 1  

CSA 1  

DLR    

ESA 2 2

INPE    

JAXA    

NASA 4 5

RFSA 2 1

UKSA   2

Other    

TOTAL 11 10

*2 via telecon; CSA & 1 NASA

Meeting Duration 5 5

Agency Diversity 6 4

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Application Support Services Working GroupGoal: 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• 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• Draft green Book initiated

Status: OK CAUTION PROBLEM

Comment: Resources affecting schedules

SOIS Area Report

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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”

SOIS Area Report

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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

SOIS Area Report

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SOIS Area Report

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: OK CAUTION PROBLEM

Comment: New interest and support

Wireless Working Group

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Wireless WGGoal: Develop wireless recommendations for onboard space applicationsWorking 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

SOIS Area Report

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PlanningGreen Book

• Spring 2014: Issue 2 PublishedWWG 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 approvalWWG 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

SOIS Area Report

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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

SOIS Area Report: Summary

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• SOIS Area Backup Slides

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Application Support Services WG

Near Term Planning

SOIS Area Report

Activity Milestone Planned end dateXML Specification for Electronic Data Sheets for Onboard Devices Blue book

Agency reviewRB 1 Complete

Spring 2015

Electronic Data Sheets XML Schema Input to SANA Fall 2014

Common Dictionary of Terms for Onboard Devices Blue book

Agency reviewRB 1 Complete

Spring 2015

Common Dictionary of Terms ontology Input to SANA End 2014

EDS Green book Draft v1 Spring 2015

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Wireless SSIARTSmart-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 Inter-Agency Reference Testbench.

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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 multi-

sourced 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

SOIS Area Report

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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

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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

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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

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High Data-Rate Communication and Sensing Examples

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High Data-Rate Communication and Sensing Examples

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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

• 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

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