| Hmmm….
There is currently already a UMT Tunnel Multiplexer, so I guess UMT PDU Multiplexer would work.
—kan—
Hi Kevin, The block only does PDU (frame) multiplexing, correct? So how about “UMT Multiplexer” or “UMT PDU Multiplexer”? Mark I’m okay with this approach. What would we call the functional block that is currently labeled “UMT Sublayer”?
We probably should not use the word “layer” in this case. Layers are defined in OSI reference model and there are exactly seven of them (Physical, Data Link, Network, Transport, etc.) What 802 did and what we should do as well, define sublayers for those OSI layers. For example, 802.3 split the physical layer into several sublayers: PMD, PMA, PCS, and RS. Similarly Data Link was split into MAC, MAC Control, OAM, MAC Client sublayers. We also should not use the word “system”, as it generally encompasses operations at both the transmitting end and the receiving end and includes all layers in a device. To keep the terminology and the layering model consistent with other closely-related standards, I suggest we enclose the entire UMT functionality in a sublayer called “UMT sublayer”. That will be the total thing that 1904.2 will define. Within the UMT sublayer, as it is typically done, we will define multiple “functional blocks”. These blocks, as well as their connections will be illustrated in a figure called “UMT functional block diagram”. That figure will be similar to what is now shown in Figure 4-2. UMT Layer is the entire UMT system. UMT Sublayer is a component in the UMT layer. Now that you’ve asked the question, I notice that Fig 4-1 does not make that very clear because the tunnel adapters are shown outside the UMT Layer, and the UMT Layer is not properly labeled as "UMT Layer”. In the baseline text proposal, is "UMT Layer" and "UMT Sublayer" the same thing? I see about 50 instances of UMT Sublayer and 6 instances of UMT layer. Specifically, my question is (in reference to the picture below): Are UMT Tunnel Multiplexors and UMT Tunnel Adaptors part of UMT Layer or not? They are not shown to be part of UMT Sublayer, since the UMT sublayer is shown as a separate box. Per the agreement in our meeting yesterday, I am forwarding the MS Word and PDF versions of the baseline text presented during the meeting. Please review and send comments directly to me or to the list for discussion. When commenting, please include the line number of the text for which the comment is directed and supply suggested changes to the text. Please send me comments by 17 August so I have time to update the text before the next meeting. ________________________________________________________________________
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