Re: [802.21] Question today about upper layers
Hi Peretz,
----- Original Message -----
From: Peretz Feder <pfeder@lucent.com>
Date: Monday, March 14, 2005 10:47 pm
Subject: Re: [802.21] Question today about upper layers
> Greg:
>
> I am of the opinion thet MIH commands lower layers to switch a link
> and in
> conjunction inform upper layers to take care of the IP signaling
> over the new
> selected link.
I think this is a valid situation.
It would be nice to feed enough information to
L3 that it could ask you to connect to a
particular L2 base-station too.
> Example switch 3gpp2 to .11 interface and make the MIP signaling at
> layer 3
> perform MIP re-registartion with the new COA and old MIP address.
> So I am with you.
>
> The counter argument will be what if moblity is done at the
> Application layer?
> i.e. SIP mobility?
I think global end-to-end signalling may not
need an interface the the MIH... (please note the
'may')
until DNA is widely deployed, though it's
a fairly likely scenario that multiple
subsytemes will register for indications.
Where it's likely that predictive indications
(link-going-down) are available other systems
for gaining prior knowledge of change at L3
will also be present.
These may or may not have capabilities for
end-to-end mobility signalling such as MIPv6 or
SCTP.
Greg