AW: [802.21] Update on SAPs
Hi Vivek,
after going through the emails, I feel that I can delete
couple of entries in the commentry tool which we wanted to
submitt :-)
Kalyan
-----Ursprüngliche Nachricht-----
Von: Gupta, Vivek G [mailto:vivek.g.gupta@INTEL.COM]
Gesendet: Donnerstag, 15. Dezember 2005 14:54
An: STDS-802-21@listserv.ieee.org
Betreff: Re: [802.21] Update on SAPs
Junghoon,
Some comments below.
Best Regards
-Vivek
> -----Original Message-----
> From: Junghoon Jee [mailto:jhjee@etri.re.kr]
> Sent: Thursday, December 15, 2005 3:27 AM
> To: Gupta, Vivek G; STDS-802-21@listserv.ieee.org
> Subject: RE: [802.21] Update on SAPs
>
> Hello Vivek,
>
> >
> > There is a minor update on SAPs that can help clarify the
> > various diagrams/sections in 802.21 draft even better.
> > From 802.21 perspective we can define the following SAPs in section
> 7.
> > 1] MIH_SAP: Specifies Interface of MIH with MIH Users.
> > 2] MIH_SME_SAP: Specifies interface of MIH with
> > System/Network Mgmt entity 3] MIH_LINK_SAP: Specifies
> > interface of MIH with a generic link layer
>
> Could you elaborate the above mentioned generic link layer?
> In my first understanding only with above description, it seems like
> an **abstract** link layer which hides the different features of
> underlying link layers.
> Therefore, this MIH_LINK_SAP is changed to a kind of media independent
> SAP, not a media dependent SAP.
> BTW, current D4 defines this MIH_LINK_SAP as a media dependent SAP for
> 802.11.
> Let me make one more question to clearly understand the exact
> definition.
> What's the relationship between the generic link layer and media
> specific *real* link layer?
[Vivek G Gupta]
As was said in a previous mail, the idea is to identify interface of MIH
with a generic link layer that can be used as a reference. We then use
this reference SAP interface to figure out differences with other media
specific technologies and what we need to add/amend in these different
link layer technologies (events/commands/etc.). Yes MIH_LINK_SAP has
been shown as media specific SAP only for 802.11 in draft version D4.
Instead of MIH_LINK_SAP it should be the MLME_SAP for 802.11 and
MIH_LINK_SAP can be the generic interface. In most cases (at least for
802 technologies) we shall be modifying existing media specific SAPs as
opposed to adding nay new ones.
>
> > There can be media specific changes/enhancements because of
> > definition of MIH_LINK_SAP. These would be identified as new
> > events/commands etc.
> > that need to be defined for different link layer
> > technologies. These would be reflected as changes to:
> > 1] MLME_SAP: for 802.11
> > 2] C_SAP/M_SAP: for 802.16
> > 3] MIH_3GLINK_SAP: for 3GPP/3GPP2 (to be updated)
>
> Thus, you're suggesting the amendment of the section 7 of the current
> draft/D4?
[Vivek G Gupta]
Few changes in section 5 and section 7.
> >
> > Best Regards,
> > -Vivek