Hi all, I briefly read through this document.
Here is my summary of what I learned from the different sections. * Section 2. Goals for Low-Power Operation This section high level summary about energy consumption and types of power sources. It summarizes some of the statements from the LWIG terminology draft. * Section 3. Link-Layer Assumptions I learned that cellular networks are application agnostic (at least agnostic to these types of IoT applications), that the common link model is the point-to-point link and multicast discovery does not work (whatever one would want to discover locally) and that listening as well as sending on a radio requires energy. * Section 4. Scenarios Two scenarios are being investigated,namely the sleepy device and the real-time reachable device. * Section 5. Discovery and Registration This section talks about the normal network attachment procedure and then focuses on the CoAP protocol interactions (resource directory and the not yet standardized mirror proxy). Since there is nothing in the local cellular network to discover the document describes alternative ways to discover these CoAP entities. * Section 6. Data Formats This section highlights that there are different data formats and the authors recommend the use of [I-D.jennings-senml]. * Section 7. Real-Time Reachable Devices This section discusses the use of CoAP servers to accomplish these reachable devices. Needless to say that servers consume more energy. * Section 8. Sleepy Devices This section speculates about the use of the CoAP mirror servers and attempts to give recommendations for implementers. * Section 9 Security Considerations The description focuses on the delegation of queries in context of the mirror server discovery. My summary: From the title of the document I was a bit surprised not to learn anything about cellular radio technologies. I think the filename and the title of the document is misleading. I think the goals of the document have to be re-evaluated. There is a lot of text in there but not much that I haven't read in other documents already. Ciao Hannes
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