Cross Support Transfer Services
(CSTS)
Future Services as of Spring
2014
October 2009
1
Future Services Overview
Source:
Assessment Date:
1.
2.
3.
4.
5.
6.
7.
8.
http://cwe.ccsds.org/fm/Lists/Projects/IOAG.aspx
28/03/2014
CSTS Transfer File Service
CSTS Offline Radio Metric Service
CSTS Forward Frames Service
Forward Synchronous Encoded Frame Service
CSTS D-DOR Data Service
CSTS Forward File Service
CSTS Return File Service
CSTS Return Unframed Telemetry
Priority 1
Priority 1
Priority 2
Priority 2
Priority 2
Priority 3
Priority 3
Priority 3
12/31/2015
12/31/2015
12/31/2018
12/31/2018
12/31/2018
12/31/2020
12/31/2020
12/31/2020
October 2009
2
Additional Identified Services
or Service Extensions
For ground station based CFDP architectures the
working group members (NASA/ESA) reported the need
to include the mission control system in the loop for all
data uplinked to the spacecraft. In this case the CFDP
PDUs (for NAK etc.) have to be transferred from the
ground station to the mission control centre which in
turn sends it back to the ground station via CLTU or
FSP. However, for the transfer of the CFDP PDUs from
the ground station to the mission control centre there is
no suitable CCSDS service.
October 2009
3
CSTS Transfer File Service
• CSTS Transfer File Service
Priority 1 12/31/2015
[CFXS] is a generic transfer file service allowing to transfer files between two units, and - on top of this
generic service more specialized file services will allow requesting the dedicated processing for the
file being transferred.
Estimated Effort:
Comments: Subject File Transfer BOF
October 2009
4
CSTS Offline Radio Metric Service
• CSTS Offline Radio Metric Service
Priority 1 12/31/2015
It is assumed that a generic transfer file service allowing to transfer files between two units, i.e.
[CFXS], will be available and - on top of this generic service more specialized file services will allow
requesting the dedicated processing for the file being transferred. In this case, it is expected that the
CSTS Offline Radio Metric Service will allow the Ground Tracking Asset to inform the Control Center
about applied processing and file contents (i.e. Tracking Data Messages (TDM) according to the
[TDM] standard specifying a format for use in exchanging spacecraft tracking data).
Estimated Effort:
Comments: Subject File Transfer BOF
October 2009
5
CSTS Forward Frames Service
Priority 2 12/31/2018
Forward Internetworking for DTN, Forward Internetworking for IP, Return Internetworking for DTN,
Return Internetworking for IP.
Estimated Effort:
Comments: The purpose as stated in Catalogue#2 should be updated
Subject to CSTS WG based on CSTS SFW. This service includes Forward Synchronous Frame
Service
October 2009
6
Forward Synchronous Encoded Frame Service
Priority 2 12/31/2018
This Service enables a mission to send Frames to a spacecraft by allowing a Control Center to provide
- in an asynchronous manner - a Ground Tracking Asset with encoded frames for uplink to a
spacecraft in a synchronous manner. The Ground Tracking Asset will undertake to insert predefined
idle frames in the absence of user supplied data.
Estimated Effort:
Comments: Included in Forward Frame Service. Does not have to be done as a separate service.
October 2009
7
CSTS D-DOR Data Service
• CSTS D-DOR Data Service
Priority 2 12/31/2018
The CSTS D-DOR Data Service is to be written. It is assumed that a generic transfer file service
allowing to transfer files between two units, i.e. [CFXS], will be available and - on top of this generic
service more specialized file services will allow requesting the dedicated processing for the file being
transferred. In this case, it is assumed that the CSTS D-DOR Data Service [DDORS] will implement
delivery of newly defined D-DOR raw data transfer according to [DDRXF].
Estimated Effort:
Comments: Subject File Transfer BOF. This is a specialised file transfer. The challenge of these files
is the large file size (use of inverse multiplexing etc.). This service will be suitable to transfer open loop
recordings.
October 2009
8
CSTS Forward File Service
• CSTS Forward File Service
Priority 3 12/31/2020
This Service enables a mission to send the contents of a file to a spacecraft by allowing a Control
Center to provide a Ground Tracking Asset with files for uplink. Within Catalog #1, usage of this
service is limited to a spacecraft directly reachable from a Ground Tracking Asset (i.e. single hop
space link)
Estimated Effort:
Comments: Re-discuss with IOAG if this can be confirmed. The required closed loop at the ground
station does not seem to be the way mission want to operate.
October 2009
9
CSTS Return File Service
• CSTS Return File Service
Priority 3 12/31/2020
This Service enables a mission to send the contents of a file to a Control Center by allowing a Ground
Tracking Asset to provide a Control Center with files received from a spacecraft. Within Catalog #1,
usage of this service is limited to a spacecraft directly reachable from a Ground Tracking Asset (i.e.
single hop space link)
Estimated Effort:
Comments: Re-discuss with IOAG if this can be confirmed. The required closed loop at the ground
station does not seem to be the way mission want to operate.
October 2009
10
CSTS Return Unframed Telemetry
• CSTS Return Unframed Telemetry
Priority 3 12/31/2020
This Service enables a mission to send Telemetry (not presenting any standardized/known formatting
to the service provider) to a Control Center. It relies on the same Space Link Interface Standards
applicable to Return All Frames Service plus the following Space Link Interface Standards and Ground
Link Interface Standards. - SLE Return Unframed Telemetry [RUFT] This service will accommodate
legacy missions not compliant with most recent CCSDS space link standards and it shall not be
offered to future missions.
Estimated Effort:
Comments: There is an ANSI standard that refines the RAF service to provide unframed telemetry.
October 2009
11