IETF Logo Mail Archive

Re: [IPv6] satcom link KPIs in IPv6 RAs for application notification?

Alexandre Petrescu <alexandre.petrescu@gmail.com> Tue, 20 February 2024 12:50 UTC

Return-Path: <alexandre.petrescu@gmail.com>
X-Original-To: ipv6@ietfa.amsl.com
Delivered-To: ipv6@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 15669C1519B3 for <ipv6@ietfa.amsl.com>; Tue, 20 Feb 2024 04:50:22 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -4.339
X-Spam-Level:
X-Spam-Status: No, score=-4.339 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_ADSP_CUSTOM_MED=0.001, FORGED_GMAIL_RCVD=1, FREEMAIL_FROM=0.001, NML_ADSP_CUSTOM_MED=0.9, RCVD_IN_DNSWL_HI=-5, RCVD_IN_ZEN_BLOCKED_OPENDNS=0.001, SPF_HELO_NONE=0.001, SPF_SOFTFAIL=0.665, T_SCC_BODY_TEXT_LINE=-0.01, URIBL_DBL_BLOCKED_OPENDNS=0.001, URIBL_ZEN_BLOCKED_OPENDNS=0.001] autolearn=ham autolearn_force=no
Received: from mail.ietf.org ([50.223.129.194]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 2nvJsz9O1e0v for <ipv6@ietfa.amsl.com>; Tue, 20 Feb 2024 04:50:18 -0800 (PST)
Received: from sainfoin-smtp-out.extra.cea.fr (sainfoin-smtp-out.extra.cea.fr [132.167.192.228]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 157DAC1519AE for <ipv6@ietf.org>; Tue, 20 Feb 2024 04:50:17 -0800 (PST)
Received: from pisaure.intra.cea.fr (pisaure.intra.cea.fr [132.166.88.21]) by sainfoin-sys.extra.cea.fr (8.14.7/8.14.7/CEAnet-Internet-out-4.0) with ESMTP id 41KCnn6T011709; Tue, 20 Feb 2024 13:49:49 +0100
Received: from pisaure.intra.cea.fr (localhost [127.0.0.1]) by localhost (Postfix) with SMTP id 93C342083BB; Tue, 20 Feb 2024 13:49:49 +0100 (CET)
Received: from muguet1-smtp-out.intra.cea.fr (muguet1-smtp-out.intra.cea.fr [132.166.192.12]) by pisaure.intra.cea.fr (Postfix) with ESMTP id 86F072083B2; Tue, 20 Feb 2024 13:49:49 +0100 (CET)
Received: from [10.8.32.70] (is156570.intra.cea.fr [10.8.32.70]) by muguet1-sys.intra.cea.fr (8.14.7/8.14.7/CEAnet-Internet-out-4.0) with ESMTP id 41KCnnBO036866; Tue, 20 Feb 2024 13:49:49 +0100
Message-ID: <327235ab-5044-4085-8b16-b5e6a7496780@gmail.com>
Date: Tue, 20 Feb 2024 13:49:49 +0100
MIME-Version: 1.0
User-Agent: Mozilla Thunderbird
Content-Language: fr
To: Ole Troan <otroan@employees.org>
Cc: 6man WG <ipv6@ietf.org>
References: <713c3ca9-7077-46f6-b398-ce3cccdcb6b0@gmail.com> <676CA074-92AF-4454-BAF9-18A51205ED64@employees.org>
From: Alexandre Petrescu <alexandre.petrescu@gmail.com>
In-Reply-To: <676CA074-92AF-4454-BAF9-18A51205ED64@employees.org>
Content-Type: text/plain; charset="UTF-8"; format="flowed"
Content-Transfer-Encoding: 8bit
X-CEA-Virus: SOPHOS_SAVI_ERROR_OLD_VIRUS_DATA
Archived-At: <https://mailarchive.ietf.org/arch/msg/ipv6/HkKEYoJIhPC5LBdQwRDMeVvlTWM>
Subject: Re: [IPv6] satcom link KPIs in IPv6 RAs for application notification?
X-BeenThere: ipv6@ietf.org
X-Mailman-Version: 2.1.39
Precedence: list
List-Id: "IPv6 Maintenance Working Group \(6man\)" <ipv6.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/ipv6>, <mailto:ipv6-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/ipv6/>
List-Post: <mailto:ipv6@ietf.org>
List-Help: <mailto:ipv6-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ipv6>, <mailto:ipv6-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 20 Feb 2024 12:50:22 -0000


Le 16/02/2024 à 13:36, Ole Troan a écrit :
> If you use the universal RA option you can put whatever you like in
> there.

That draft could indeed be a place to look where to encode bw and RTT
KPIs of a link (key perf indicators).
draft-troan-6man-universal-ra-option-06

There could be a satcom-specific particularity:

In some satcom links for 'direct-to-smartphone' 5G, the IP router is on
ground (not on sat), then there is a bridge kind of satellite up there
in orbit, and finally the smartphone (IP host) is down on ground.  There
are two links in between (router-to-sat and sat-to-smartphone) each with
distinct download/upload KPIs, not just one; these have distinct bw and
RTT characteristics.  If there was an IP router on the sat then there
would be just one link router-to-smartphone and things would be much easier.

Probably it is possible to encode such kind of 2-link parameters with
the opaque fields of the universal RA option in that draft.

Alex

> 
> O.
> 
>> On 16 Feb 2024, at 12:45, Alexandre Petrescu
>> <alexandre.petrescu@gmail.com> wrote:
>> 
>> Hi,
>> 
>> There is a possibility to ask about putting link-specific KPIs (key
>> perf indicators, like bw, latency, ping RTT) in IPv6 Router
>> Advertisements sent on a satcom link to the smartphone.  Maybe for
>> 5G/6G concepts such as 'direct-to-cell' or 'direct-to-smartphone'.
>> It might be in relationship with  a potential study at SA6 at 3GPP
>> about 'application notification about KPIs'.
>> 
>> I'd say this would be in order to notify the application on the 
>> smartphone that that satcom link is different than its other
>> typical links.  The bandwidth might be very high (100mbit/s) but
>> the latency ping RTT might be different than what that bw is
>> expected on wifi or 4G.
>> 
>> Would this satcom link KPIs in RA be appropriate?
>> 
>> Alex
>> 
>> --------------------------------------------------------------------
>>
>> 
IETF IPv6 working group mailing list
>> ipv6@ietf.org Administrative Requests:
>> https://www.ietf.org/mailman/listinfo/ipv6 
>> --------------------------------------------------------------------
>>
>
>> 
>

v2.23.0 | Report a Bug | By Email