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RE: More context on ATSSS use case

"Flinck, Hannu (Nokia - FI/Espoo)" <hannu.flinck@nokia-bell-labs.com> Mon, 26 October 2020 12:49 UTC

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From: "Flinck, Hannu (Nokia - FI/Espoo)" <hannu.flinck@nokia-bell-labs.com>
To: Lucas Pardue <lucaspardue.24.7@gmail.com>
CC: Florin Baboescu <florin.baboescu=40broadcom.com@dmarc.ietf.org>, David Schinazi <dschinazi.ietf@gmail.com>, Mirja Kuehlewind <mirja.kuehlewind@ericsson.com>, "quic@ietf.org" <quic@ietf.org>
Subject: RE: More context on ATSSS use case
Thread-Topic: More context on ATSSS use case
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Date: Mon, 26 Oct 2020 12:49:50 +0000
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Hello Lucas

No, there are multiple QUIC connections (multipath!). Please see slide #5 in
https://github.com/quicwg/wg-materials/blob/master/interim-20-10/Multipath%20in%203GPP%20ATSSS.pdf

Bulk data and low-latency are kept separate. Each QoS flow has its own connection.

Best regards
Hannu

From: Lucas Pardue <lucaspardue.24.7@gmail.com>
Sent: Monday, October 26, 2020 10:20 AM
To: Flinck, Hannu (Nokia - FI/Espoo) <hannu.flinck@nokia-bell-labs.com>
Cc: Florin Baboescu <florin.baboescu=40broadcom.com@dmarc.ietf.org>; David Schinazi <dschinazi.ietf@gmail.com>; Mirja Kuehlewind <mirja.kuehlewind@ericsson.com>; quic@ietf.org
Subject: Re: More context on ATSSS use case

Hey,
On Mon, 26 Oct 2020, 06:50 Flinck, Hannu (Nokia - FI/Espoo), <hannu.flinck@nokia-bell-labs.com<mailto:hannu.flinck@nokia-bell-labs.com>> wrote:
Hello Lucas

When a PDU session is established (PDU session is like setting up L2) a set of attributes will be exchanged between the UE and the 5G network. Part of the is the type of PDU session, such as multiaccess-PDU with steering mode information (e.g. load balancing, active-standby, etc. see the presentation for more details). The MP-QUIC connection is established per IP flow (5 tuple). With this information the UE will steer the traffic to the corresponding multipath-quic connection.

I don't follow, sorry.

If a single IP flow carrying QUIC is used for multiplexing both low-latency and bulk data, how do you resolve this?

Cheers
Lucas

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