Capability to transfer data either in an asynchronous, synchronous, or periodic fashion: [Sls-slp] Review Copy of USLP Draft White Book for Cleveland Meeting placed on CWE - Please use this version

[Greenberg, Edward (312B)]

It relies on frame delivery

From: sls-slp-bounces at mailman.ccsds.org [mailto:sls-slp-bounces at mailman.ccsds.org] On Behalf Of Gian.Paolo.Calzolari at esa.int
Sent: Wednesday, March 23, 2016 12:33 AM
To: Kazz, Greg J (312B)
Cc: sls-slp at mailman.ccsds.org
Subject: Capability to transfer data either in an asynchronous, synchronous, or periodic fashion: [Sls-slp] Review Copy of USLP Draft White Book for Cleveland Meeting placed on CWE - Please use this version

Greg,
        I would like to refer to the change in the snapshot.
[cid:image001.gif at 01D184D4.CB7FAB50]

Section 2.2 describes  the  data transfer services that the USLP Space Data Link Protocol provides to users.
In this sense the data are not frames (generated by the protocol sublayer towards the coding sublayer, at sending end) but are the data (packets, etc received .by the protocol sublayer from the upper layer). In fact those services are summarised in Table 2-1.

Therefore the reference to frame and codeblock alignment is not appropriate there.
In other words if a users decide to use the Virtual Channel Octet Stream Service generating data in Asynchronous [Periodic] mode, that service will remain Asynchronous [Periodic] independently from frame and codeblock alignment.

In general I think USLP has no need to mention frame and codeblock alignment  anywhere in this document.

Best regards and Happy Easter/Happy Purim to everybody.

Gian Paolo




From:        "Kazz, Greg J (312B)" <greg.j.kazz at jpl.nasa.gov<mailto:greg.j.kazz at jpl.nasa.gov>>
To:        "sls-slp at mailman.ccsds.org<mailto:sls-slp at mailman.ccsds.org>" <sls-slp at mailman.ccsds.org<mailto:sls-slp at mailman.ccsds.org>>
Date:        22/03/2016 18:22
Subject:        [Sls-slp] Review Copy of USLP Draft White Book for Cleveland Meeting placed on CWE - Please use this version
Sent by:        sls-slp-bounces at mailman.ccsds.org<mailto:sls-slp-bounces at mailman.ccsds.org>
________________________________



Dear SLP WG,

I've placed the final review copy for the CCSDS Spring 2016 meeting that we will use in Cleveland now on the CWE.
The filename is: USLP Space Data Link Protocol_March21_post_telecon4

The recent changes made from the last version (with the exception of a few clean up comments) can be found in the file called: review of USLP_rationale for_changes_March21_copy

The URL is:
http://tinyurl.com/jf9j6u3

No more changes will be made to this document until we meet in Cleveland on April 4 and 5.

I wish you all a very safe journey and Happy Easter/Happy Purim !
Greg Kazz
Chairman SLS-SLP_______________________________________________
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