Project Title

Licklider Transmission Protocol for CCSDS



Document Number



6.09 Delay Tolerant Networking Working Group

Document Type


Description of Document

<div>RFC5050 requires a reliable data delivery service between overlay routers.&nbsp; While CCSDS has reliable data link protocols in TC and AOS, neither is well-suited for use as a convergence layer by RFC5050.&nbsp; It is likely that any Delay Tolerant Networking protocol proposed by this group will need reliability on a hop-by-hop basis.&nbsp; Thus this working group will also standardize a reliable hop-by-hop data delivery service that can be used by the Delay Tolerant Networking protocol specified by this WG.&nbsp; The Licklider Transport Protocol (LTP) as described in the work-in-progress http://www.ietf.org/internet-drafts/draft-irtf-dtnrg-ltp-09.txt was designed for exactly this purpose, and will be the initial focus of this part of the WG effort.</div>

Applicable Patents

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

Patent Comments


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


Book Editor


Book Editor Resources

Keith Scott, The MITRE Corporation, for NASA Estimated resource (entire project): 8 months Estimated resource from FY13 to completion: 2 months.

Prototype 1


Prototype 1 Resources

Leveraging NASA Tournament Lab TopCoder support to bring ION Open Source LTP implementation in line with CCSDS specification.

Prototype 2


Prototype 2 Resources

Keith Scott, The MITRE Corporation, for NASA Estimated resource: 4 months

Prototype 3

Prototype 3 Resources



Monitor Only


Resource Comments


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.)
(Date in M/D/YYYY format.)
Project ApprovedOrange BulletGreen BulletMagenta BulletBlue Bullet3/1/2008
Project Start DateOrange BulletGreen BulletMagenta BulletBlue Bullet3/1/2008
Internal WG Review
First Draft Circulated to WGOrange BulletGreen BulletMagenta BulletBlue Bullet3/15/2009
First Draft Comments DueOrange BulletGreen BulletMagenta BulletBlue Bullet4/15/2009
Second draft circulated to WGOrange BulletGreen BulletMagenta BulletBlue Bullet9/15/2009
Second Draft Comments DueOrange BulletGreen BulletMagenta BulletBlue Bullet10/15/2009
Final WB Submitted to AD for Further ProcessingOrange BulletGreen BulletMagenta BulletBlue Bullet3/1/2010
External Milestones
Secretariat Document ProcessingOrange BulletGreen BulletMagenta BulletBlue Bullet3/15/2010Approximate
First Agency ReviewMagenta BulletBlue Bullet5/15/2010
RID ResolutionMagenta BulletBlue Bullet6/15/2010
Secretariat Document Processing 2Magenta BulletBlue Bullet8/15/2010
Final Agency ReviewMagenta BulletBlue Bullet9/15/2010
RID ResolutionMagenta BulletBlue Bullet10/15/2010Last RID closure received 8/6/2012
First Prototype DevelopmentBlue Bullet3/15/2009LTP prototype done and publicly released 8/2/2012
Second Prototype DevelopmentBlue Bullet3/15/2009TopCoder augmentation of ION LTP to add authentication.
CMC ApprovalOrange BulletGreen BulletMagenta BulletBlue Bullet3/15/2011Approved by CMC Poll
Total Time to Complete
(in months)
Version: 348.0
Created at 9/24/2008 1:02 PM by Scott Keith
Last modified at 7/9/2015 6:25 AM by Peccia Nestor