On Monday 29 November 2010 16:46:43 ext Sjur BRENDELAND, you wrote:
This raises some questions about the handling of
When a terminal attach to LTE network it would
normally do an implicit context activation request
associated to attach request (+CGATT=1).
Yeah. So the ConnectionManager cannot be 'Powered' off in LTE.
When the context activation is completed this will
result in an event notifying about the activated PDN
connection according to
27.007 10.1.19 Packet Domain event reporting +CGEREP.
+CGEV: ME PDN ACT <cid>
At this point we have a "connection context" in the modem.
The question is then, how should we model this in oFono?
Should we assume/require that a Connection Context
already is created by ConnMan and pre-exists in
oFono (possibly with a flag indicating that this
represents the initial PDN, or perhaps just taking
the "internet" ConnectionContext)?
The modem driver ought to know what the default PDN is, and match it to the
correct oFono primary context. no?
Or should oFono automatically create a Connection Context?
Furthermore, should oFono automatically proceed and
set Active=true, bind the connection to a network interface
and set network interface in state UP,
Definitely not. This would interfere with any other existing IP connection, say
or should the ConnectionContext initially set Active=false,
waiting for ConnMan to activate it?
This assumes that the default PDN would be the Internet connection. For data-
only LTE, this might work. But wouldn't this fail miserably for networks with
separate PDN for IMS and Internet?
Nokia Devices R&D, Maemo Software, Helsinki