From: Cheng
Hong [mailto:Hong.Cheng@sg.panasonic.com]
Sent: Tuesday, August 16, 2005 7:33
PM
To: Gupta, Vivek G;
STDS-802-21@listserv.ieee.org
Subject: RE: 802.21 Teleconference: L2
Requirements for 802.11
Thanks a lot for the
document. Sorry I could not make for the teleconf yesterday, but I got a few
questions (sorry if they are already clarified during
teleconf)
1) In Table 1, what
is the use case for event 9 to 11? What is the defintion of Handoff? Is this a
lower layer thing or application layer
thing?
[Vivek
G Gupta] In my own opinion events 9-11 seem redundant/duplicate and may be
eliminated from later version of 802.21
drafts.
2) Regarding table 2,
in the column of "MIHF<>MIHF", are those indicating bi-directional
relationship or unidirectional?
[Vivek
G Gupta] believe these are
Bidirectional..
E.g. when it is
"Client<>Network PoA", does it mean "From Client to Network PoA", or
"between Client and Network PoA"?
[Vivek
G Gupta] Between client and network PoA. The command could be sent by
either the client or network PoA depending on client initiated or network
initiated handovers. Current ongoing architectural discussions may have impact
on these.
3) The table 3, are
these intend to be the payload to be carried by the 11 protocol, or are
they the IEs to be defined in 11?
[Vivek
G Gupta] We discussed these in detail and most of the meeting time was spent
on Information Service and IEs. These are IEs and some of these (those
relevant to 802.11 MAC/PHY need to be defined by 802.11). Others are more
general and independent of MAC/PHY…
4) In table 3, item
2, why the 11 network needs to indicate support of other type of networks,e.g.
16 and GSM, etc. And, is the intension to have all the network types in the
same namespace instead of subgroups, e.g. 11-subtypes, 16-subtypes,
cellular-subtypes...etc?
[Vivek
G Gupta] We may need to organize this information
better.
This
particular information may not directly come from .11 access network but from
802.21 Information Server. 802.11 may not need to do any thing in this
case.
5) In table 3, item
6, what does this mean? Is this the location of the PoA or the Terminal? In
11, if this is the terminal location, it may mean a different requirement on
the 11 specification, ie. to provide meansurement capability for an accurate
terminal location.
[Vivek
G Gupta] It’s the location of PoA…
6) Table 3, item 7,
can this support both IP versions?
[Vivek
G Gupta] Not sure what you mean here..maybe the Type field (Enumerated) is
incorrect, but again 802.11 may not need to do anything for this
IE.
7) Table 3, item 9,
for a 11 network, probably the most important type is "Generic IP Service".
Also, not sure about how the "supported" means, e.g. "VPN" has many
types..
[Vivek
G Gupta] Yes we did talk about these and again this information may come from
802.21 Information server and 802.11 may not need to define
anything.
In
general there were lots of questions and some issues identified as well around
Information Service and IEs.
Which
IEs are really applicable to different access networks and which are more
independent of different access networks?
What
does it mean for an access network to provide support for an
IE?
If
IEs are retrieved at L2 from PoA, is there an implicit assumption that the PoA
knows how to communicate with 802.21 Information Server? Is this a reasonable
assumption?
Do
we need to specify which IEs can be supported in unauthenticated state and
which cannot?
From:
stds-802-21@ieee.org [mailto:stds-802-21@ieee.org] On Behalf Of Gupta, Vivek G
Sent: Tuesday, August 16, 2005 3:24
AM
To:
STDS-802-21@listserv.ieee.org
Subject: RE: 802.21 Teleconference: L2
Requirements for 802.11
Attached is an
initial document listing some of the requirements for 802.11 media
type.
We shall discuss
these requirements tomorrow and then update them further.
Please feel free to
send in your comments and suggested amendments.
Best
Regards
-Vivek
From:
stds-802-21@ieee.org [mailto:stds-802-21@ieee.org] On Behalf Of Gupta, Vivek G
Sent: Monday, August 15, 2005 6:54
AM
To:
STDS-802-21@listserv.ieee.org
Subject: 802.21 Teleconference: L2
Requirements for 802.11
The next 802.21 telecon on L2
Requirements for 802.11 will be held as per
below.
Please plan on joining us
then.
Date: August
16, 2005, 9:00 AM EST
Phone:
916-356-2663, Bridge: 3, Passcode: 0566976
Lines:
25
Best
Regards
-Vivek