Subject: [lp-wan] Comments on the lorawan draft-10

From: Arunprabhu Kandasamy <[email-masked]>
Date: Mon, 28 Sep 2020 17:17:30 +0200

Hi Olivier, thanks for the new version.

I have two comments on the latest version of the draft.

Section:
    "5.6.2"
Line:
    "Penultimate tile MUST be equal to the regular size."
Comment:
    "IMO, we cannot force a MUST condition here since the draft

    allows All-1 with last tile. And if the last tile is less than

    l2 word we need to borrow a l2word from the Penultimate tile.

    Thereby contradicting the statement"

Section:
    "5.6.2"
Line:
    "The sender MUST ascertain that the receiver will not receive the
    last tile through both a Regular SCHC Fragment and an All-1 SCHC
    Fragment"
Comment:
    "The statement is not clear. Does it mean,
     - the sender will not send last tile in all-1 and regular
     fragment for the same session?, or
     - the sender will not send last tile in all-1 and regular
     fragment for any session for that profile?

     IMO,sender doesn't have to specify this behavior in the profile
     because, the receiver would be able to identify the last tile
     if it is in all-1 or in Penultimate fragment."

thanks,

-- 

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*Arunprabhu KANDASAMY *R&D Engineer-IPCore
+33 2 22 06 05 77

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