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Re: [Raw] New Version Notification for draft-theoleyre-raw-oam-support-02.txt

Abdussalam Baryun <abdussalambaryun@gmail.com> Mon, 13 April 2020 13:31 UTC

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From: Abdussalam Baryun <abdussalambaryun@gmail.com>
Date: Mon, 13 Apr 2020 15:31:12 +0200
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To: John Grant <j@ninetiles.com>
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Subject: Re: [Raw] New Version Notification for draft-theoleyre-raw-oam-support-02.txt
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On Mon, Apr 13, 2020 at 12:44 PM John Grant <j@ninetiles.com> wrote:

> On 13/04/2020 05:46, Rex Buddenberg wrote:
>
> Thus, providing
>    availability and reliability on top of the wireless infrastructure
>    requires specific layer 3 mechanisms to counteract these bursty
>    losses.
>
> Where I was raised, layer 4 was where reliability mechanisms (e.g. TCP)
> were to be found. TCP is very good at counteracting bursty losses.
>   The other place that bursty losses can be countered is at layer 1
> utilizing Forward Error Correction (FEC) techniques. In my experience
> in MF, LF, HF radio they can be quite effective, albeit bandwidth-
> expensive.
>
> In cellular there is also acknowledge/retransmit in the lower layers; I
> guess it'd be layer 2 so still not layer 3. One issue the mobile industry
> has is that TCP assumes a packet that gets through at the second attempt
> has been delayed by congestion, and reacts inappropriately.
>

For RAW technology there needs to be reliable technique in L1 or L2 so that
we can call it reliable wireless. In cellular it is reliable techniques.

AB

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