[Sls-slp] Proposed Changes to USLP (CCSDS 732.1-B) FECF, related sections, and USLP Green Book

[Kazz, Greg J (US 312B)]

Dear SLP WG,


** Just an update to this email, that I have now included the associated changes to the USLP Green Book, i.e., CCSDS 700.1-G due to the proposed changes to the FECF field in the USLP blue book. You can access both the Blue book and Green book proposed changes at the URL - https://tinyurl.com/y62vq58q   **


Due to some issues that Ken Andrews and Massimo Bertinelli from the C&S WG have brought to my attention regarding the application of the CRC-32 in USLP with respect to the C&S sublayer coding recommendations, I have generated with the help of Gian Paolo some proposed changes to the 732.1-B (USLP) Blue book related to the Frame Error Control Field (FECF). The idea behind these changes is to simply the interface between the C&S sublayer and the Protocol Sublayer. In essence, USLP would only supply the CRC-16 for the FECF. The CRC-32 would only be supplied by the C&S sublayer when CCSDS 211.2 (Prox-1 Sync & CC) applies.

These proposed changes are in the SLP WG CWE under:

https://tinyurl.com/yxc6s7xr

Please let me know if you have any comments on these changes. My intent is to bring these changes up for discussion at the Virtual CCSDS Fall meetings in late October in the SLP WG meetings. I would like to receive your comments by Sept 24.

Best regards,
Greg

Greg Kazz
Principal Engineer
Technical Group Supervisor,
PSSE/EEISE/PPSE (312B)
Jet Propulsion Laboratory
4800 Oak Grove Dr., M/S 301-490
Pasadena, CA 91109
1+(818)393 6529(voice)
1+(818)393 6871(fax)
email: greg.j.kazz at jpl.nasa.gov

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