Le 24/04/2015 21:30, Behcet Sarikaya a écrit :
[...]
When the car arrives home it connects to the WiFi available in
home, thus handing over from LTE. This is a sold use-case at e.g.
Tesla. The WiFi hotspot can be the one deployed in-house,
in-garage, or the WiFi offered by the electrical recharging
stations.
Even if the is the case then 3GPP developed a lot of things on
accessing non-3GPP networks like Wi-Fi. I think line-id is used
instead of IMSI?
I dont know. Maybe line-id should be suggested as an MN-ID as well.
But I can tell that vehicles will not always use the 3GPP-defined means
to connect to WiFi. And the WiFi operator is different than the 3GPP
operator, and thus a different MN-ID form.
The MN-ID that I consider in vehicles is the one used for Mobile IP.
3GPP deployments I confront with dont use Mobile IP.
Mobile IP offers a mobility solution completely independent of the
access networks.
Alex
Behcet
Other manufacturers propose scenarios in which car's WiFi antenna
switches from being an in-car hotspot to being a Client to outside
wifi.
Some consider 802.11p (wifi for vehicles) to be deployed along
highways and cars to perform handovers between these 802.11p
access points.
Next time on highway scan for WiFi - one is surprised by the
number of hotspots driving around, even though often they use
portals.
There are many commercially considered scenarios involving WiFi
handovers for cars.
Alex
Behcet
Newer models will feature IPv6 in addition to IPv4, WiFi
handover from LTE to house's hotspot, continuous sessions, and
over-the-air software update for cheap upgradeability to
future generation 5G and beyond.
In this context it is hard to imagine IMSI will be there for a
long time in a given car, and a more permanent identifier is
needed.
To Raj - is LTE considering other kinds of identifiers for
access control (other than IMSI) for vehicular environments,
like V2X?
Alex
Regards,
Behcet
Yours,
Alex
- Jouni & Dapeng
4/1/2015, 8:02 AM, Jouni Korhonen kirjoitti:
Folks,
This emails starts a two week call for the I-D
draft-perkins-dmm-4283mnids-01 to confirm the
aadoption s a DMM WG document. The call ends April 15th
EOB PST.
Express your support or opposition to the mailing
list. During the IETF92 meeting we got 7 voices for
the adoption so at least the same amount supporting
emails should be expected.
- Jouni & Dapeng
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