RE: [MIP-QOS] Re: MIP-QOS -- Scope of discussions

["ext James Kempf" <James.Kempf@sun.COM>]

Marc,


>I think we should probably leave any considerations about the radio access
>out of the discussion and just assume that there is a mechanism which allows
>a mobile node in a wireless network to set up a reservation similar to an
>IntServ reservation in the radio network. I think we should be concerned
>about how the QoS in the fixed core network is set up and maintained when
>the mobile node moves, and I don't see a reason why we can't see the radio
>access network as a black box for that purpose.
>

I disagree.

I don't think the radio access network should be a black box. We are not doing
requirements here for existing 3GPP/2 radio access networks, but
for the Internet. We should be doing our requirements so that
it may be possible to design an all-IP radio access network that connects
up with the Internet directly, without all the layers of interfaces
that the current 3G designs require.

There was a requirement expressed at the NSS BOF to have a QoS mechanism
that allows a better match between wire QoS and the air. I agree
with this requirement. I think radio networks have fundamental
Intsrv like characteristics, I think any new QoS mechanism needs to
provide the ability to do a smooth translation between wired QoS
and wireless QoS. I think this does not imply an end-to-end IntSrv
model. This doesn't mean that the design needs to specify wireless QoS, however,
that is naturally up to the radio link protocol.

I can't say specifically how to word that as a requirement in a succient
manner, but that's the general idea.

		jak