Re: [lp-wan] Flow validation in ACK-on-error Mode

[Rodrigo Muñoz <[e-mail]>]

Hi Olivier

I forgeted answer your question. Yes, I'm agree with the below description

> At the end of a window or a
> fragmentation session, corresponding ACK(s) is (are) transmitted
> by the network gateway (LoRaWAN application server) in the RX1 or
> RX2 receive slot of end-device.  If this ACK is not received *by* the
> end-device *at the end of its RX windows, it* sends an all-0 (or an
all-1) fragment with no payload
> to request an SCHC ACK retransmission.

Thanks for consider my request

Regards

El lun., 23 sept. 2019 a las 8:14, Olivier Gimenez (<[e-mail]>)
escribió:

> Hi Rodrigo,
>
> From what I understand the second image your question is: “How does the
> transmitter knows when to send the All-1 SCHC message” ?
> In LoRaWAN class A there is no way to initiate communication from the
> network, device has to send an uplink so it can open RX windows.
>
> So the device can send the All-1 as soon as RX1, RX2 widows are over
> without downlink. Please see attached picture
>
> I propose to change the following sentence of §5.1.1, it is clearer for
> you ?
>
> > At the end of a window or a
> > fragmentation session, corresponding ACK(s) is (are) transmitted
> > by the network gateway (LoRaWAN application server) in the RX1 or
> > RX2 receive slot of end-device.  If this ACK is not received the
> > end-device sends an all-0 (or an all-1) fragment with no payload
> > to request an SCHC ACK retransmission.
>
> to
>
> > At the end of a window or a
> > fragmentation session, corresponding ACK(s) is (are) transmitted
> > by the network gateway (LoRaWAN application server) in the RX1 or
> > RX2 receive slot of end-device.  If this ACK is not received *by* the
> > end-device *at the end of its RX windows, it* sends an all-0 (or an
> all-1) fragment with no payload
> > to request an SCHC ACK retransmission.
>
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*Rodrigo Muñoz Lara*