Project Title

Specifications for Real-time Protocol as transport for voice & video



Document Number



6.08 Motion Imagery and Applications Working Group

Document Type


Description of Document

When the MIA blue book was originally defined, the broadcast industry had centered on the MPEG-2 transport stream (M2TS) standard, originally released in 1995, as a method to send pseudo-packetized video over satellite networks. As the industry settled upon IP-based systems, M2TS was adopted as the de facto standard for transmission of compressed video via IP systems.  The nature of Delay Tolerant Networking (DTN) showcases the limitations of the M2TS standard. As M2TS performs interleaving and packetization with a very strict limit on packet-by-packet jitter, it becomes imperative that bundles are received in-order at a consistent rate, something which DTN does not excel at.  RTP is designed for the internet environment, and allows for variable sized packets, amongst other advantages with regards to synchronization of multiple sources, etc. DLR experimentation has shown that a system designed along the lines of RTP is well-suited to DTN networks.  Therefore, MIA proposes a blue book outlining the specifications for RTP as a transport for voice, video, and optional metadata in space-based DTN networks.

Applicable Patents

There are no patent issues for this technology that are known by the CCSDS community

Patent Comments

Similar to the previous video and voice Blue Books, this book will specify application of other existing protocols and standards for use in the space application.

Survey of Similar Standards
Documents or Projects
Undertaken in Other Bodies
and elsewhere in CCSDS

While there aren't any space-link/BP specific variants of RTP within CCSDS, most RTP related work is done under the IETF & IANA. A brief overview of RTP-related IETF RFC's comes up empty. However, since it is very likely that the Session Description Protocol (SDP) may also come into play as a media description syntax, those standards must also be checked out. IANA is responsible for the registration of various values within SDP, including the couple we will interact with: · Nettype – The network type. IN is reserved for internet destinations, but ATM and PSTN are also allocated. We might need to allocate CCSDS or BP. · Addrtype – The address type, such as IP4 and IP6. Similarly, we might have to allocate a special type for this. Otherwise, within CCSDS, there was a showcase of RTP over IP over CCSDS completed in 2009 by Loren Clare from JPL, which used suggestions from the CCSDS standard for space link identifiers (CCSDS 135.0-B-4). Namely, they compressed RTP headers (via IETF RFC 2508) and piped it over various space-link doohickies.


Book Editor


Book Editor Resources

6 Man Months

Prototype 1


Prototype 1 Resources

3 Man Months

Prototype 2


Prototype 2 Resources

3 Man Months

Prototype 3

Prototype 3 Resources



Monitor Only


Resource Comments

There may be some contributions from DTN Working Group members depending on the availability of their time and the amount of DTN related content in our Blue Book.


Legend for Schedule Milestones
Orange Bullet = Required for Orange Books
Green Bullet = Required for Green Books
Magenta Bullet = Required for Magenta Books
Blue Bullet = Required for Blue Books
Note - Red Books are Draft Blue/Magenta Books

Schedule Milestones
Orange BookGreen BookMagenta BookBlue Book
Original Completion Date
(Date in M/D/YYYY format.)
Estimated Completion Date
(Date in M/D/YYYY format.)
Actual Completion Date
(Date in M/D/YYYY format.)
(Date in M/D/YYYY format.)
Project ApprovedOrange BulletGreen BulletMagenta BulletBlue Bullet10/16/201710/3/2017
Project Start DateOrange BulletGreen BulletMagenta BulletBlue Bullet11/6/201711/6/2017
Internal WG Review
First Draft Circulated to WGOrange BulletGreen BulletMagenta BulletBlue Bullet4/16/20184/27/20182/15/2018
First Draft Comments DueOrange BulletGreen BulletMagenta BulletBlue Bullet5/18/20185/18/20185/18/2018
Second draft circulated to WGOrange BulletGreen BulletMagenta BulletBlue Bullet12/10/201812/10/201812/10/2018
Second Draft Comments DueOrange BulletGreen BulletMagenta BulletBlue Bullet1/21/20193/15/20193/15/2019
Final WB Submitted to AD for Further ProcessingOrange BulletGreen BulletMagenta BulletBlue Bullet6/14/20198/16/20198/15/2019
External Milestones
Secretariat Document ProcessingOrange BulletGreen BulletMagenta BulletBlue Bullet8/2/20199/27/201910/22/2019
First Agency ReviewMagenta BulletBlue Bullet6/10/20193/2/20203/6/2020
RID ResolutionMagenta BulletBlue Bullet9/30/20195/8/20205/4/2020
Secretariat Document Processing 2Magenta BulletBlue Bullet11/4/20198/14/20208/14/2020
Final Agency ReviewMagenta BulletBlue Bullet1/6/202010/1/202010/20/2020
RID ResolutionMagenta BulletBlue Bullet3/2/20207/31/202111/4/2021
First Prototype DevelopmentBlue Bullet5/13/20196/14/20195/2/2019
Second Prototype DevelopmentBlue Bullet5/13/20193/2/20203/2/2020
CMC ApprovalOrange BulletGreen BulletMagenta BulletBlue Bullet5/1/20206/1/2022
Total Time to Complete
(in months)
Version: 341.0
Created at 9/13/2017 3:30 PM by Rodney Grubbs
Last modified at 12/9/2021 9:01 AM by Brian Oliver