Comments on 21-12-0067-01-srho-tgc-proposal
Hi,
I had promised to send some review comments on this document.
In Section 3, the acronym "MN" is expanded to mean "Mobile Network." I think
you meant, "Mobile Node?"
After reviewing the base 802.21 specification, I think the use of the primitives
is mostly correct; however, some of the description in the text is a bit wrong.
For example, you say in Section 7.4.29.1.1 that the function of the
MIH_LL_Transfer.request primitive is to carry link-layer frames between the
MN and the serving PoS. This is incorrect. It only carries the link-layer
frames between the MIH user and the MIHF. It is the corresponding message
in Section 8.6.3.24 that actually carries the frames to the new PoS via the
existing network. This message is generated by the MIHF after receiving
an invocation of the MIH_LL_Transfer.request primitive from the MIH user.
In Section 7.4.29.1.3: you say that the primitive is generated by an MIH user
to start an authentication and association process based on link-layer frames.
Do you really need to be so specific? This is a general-purpose primitive for
sending link-layer frames for any purpose whatsoever, isn't it?
Section 7.4.29.1.4: you say the MIH_LL_Transfer.indication is used by a remote
MIHF. I don't think you need to specify that it is a "remote" MIHF. You just
need to say that it is used by an MIHF to notify the local MIH user about the
receipt of an MIH_LL_Transfer request message.
I do not think you need to specify the corresponding .response and .confirm
messages. The transfer of a link-layer frame is a one-way, unreliable operation
that does not always generate a response. Specifying a .response just seems
redundant; the MIH user that receives an .indication can always generate a
brand new .request primitive to transfer a link layer frame in the other
direction.
Similarly, I think you can do away with the MIH_N2N_LL_Transfer.response and
.confirm primitives.
Do these suggestions make sense?
--
Peter J. McCann
Huawei Technologies (USA)
Peter.McCann@xxxxxxxxxx
+1 908 541 3563
Rm. C-0105, 400 Crossings Blvd. (2nd floor), Bridgewater, NJ 08807-2863 USA