Connection details ------------------ * Date: July 4th, 2018 * Time: 8-9AM DST, 17:00 CEST: https://www.worldtimebuddy.com/?qm=1&lid=2988507,1816670,5391959,5128581&h=2988507&date=2018-07-04&sln=17-18 * Webex Link: https://cisco.webex.com/ciscosales/j.php?MTID=mf0e1c96b73e92ea011426be8227d8678 * Meeting number: 202 477 894 * Meeting password: QprtWqpe (77789773 from phones) * Join from a video conferencing system or application * Dial 202477894@cisco.webex.com * Join by phone * +1-866-432-9903 Call-in toll-free number (US/Canada) * +1-408-525-6800 Call-in toll number (US/Canada) * Access code: 202 477 894 * * Global call-in numbers: * https://cisco.webex.com/ciscosales/globalcallin.php?serviceType=MC&ED=410481357&tollFree=1 Minute takers ------------- * Ana Minaburo * Pascal Thubert * Dominique Barthel * Carles Gomez * Alexander Pelov Attendees --------- Ana Minaburo Laurent Toutain Pascal Thubert Alexander Pelov Carles Gomez Dominique Barthel Vincent Audebert Arunprabhu Kandasamy Ivaylo Petrov Ricardo Andreasen Diego Dujovne Past Attendees --------- Ana Minaburo Laurent Toutain Pascal Thubert Alexander Pelov Carles Gomez Dominique Barthel Juan Carlos Zuniga Julien Catalano Ricardo Andreasen * Alex Pelov * Flavien Moullec * Felipe Díaz-Sánchez * Ana minaburo * Dominique Barthel * Laurent Toutain * Carles Gomez * Ivaylo Petrov * Juan-Carlos Zuniga * Julien Catalano * Orne Brocaar * Pascal Thubert * Vijay Gharge * Orne Brocaar * Paventhan Arumugam * Paul Duffy * Diego Dujovne * Pascal Thubert * Alex Pelov * Laurent Toutain * Ana Minaburo * Vanessa Valderrama * Dominique Barthel * Julien Catalano * Edgar Ramos * Carles Gomez * J Sanchez * Ramon Sanchez * Juan-Carlos Zuniga * Felipe Díaz-Sánchez Action Items from last time ---------------------------- Chairs: find reviewers for drafts Agenda ------ * [17:05] Administrivia [ 5min] o Note-Well, Scribes, Agenda Bashing o Status of drafts * [17:10] SCHC IP WGLC 2 / Shepherd review [10min] * [17:20] SCHC CoAP - Laurent [40min] * [18:00] AOB [ 0min] Minutes ------- Pascal: Ask to those who want to present to answer to the e-mail he sends with the 5 questions to get a slot, it is important to give all the information. * [17:05] Administrivia [ 5min] o Note-Well, Scribes, Agenda Bashing o Status of drafts Pascal: Gives Note Well, if you know if there is patents, IPR, etc please senda mail to the chairs Alex: Ask if everybody accept the minutes from the last meeting Alex: any other point for today's agenda? Pascal: minutes from the last interim are approved Laurent: Ask for talk about the meeting agenda Pascal: 2 action items: - Asking for reviewers for the CoAP draft (done) TODO: organize a side-meeting with CoRE chairs Pascal: need all questions about slots in Montreal answered (by NB-IoT and LoRaWAN specific drafts) Pascal: will Ricardo be remotely presenting in Montreal? (For the SCHC-OSCORE part) Ricardo: Yes Pascal: Nicolas will present the SCHC over LoRaWAN draft (remotely) Ana: we missed the I-D cutoff date, but we have new content that can be presented. 10 mins is OK. Pascal: Charlie said he also would like a slot. If Ana can present in 5 min, that would be good. Ana: OK. Laurent: 5 min for the Timescale draft will be good Pascal: 15 min for Juan Carlos, since he wants to discuss on ACK-on-Error Pascal: does the agenda look good? [Several replies] Yes * [17:10] SCHC IP WGLC 2 / Shepherd review [10min] Pascal: second WGCL started, because too many changes since the first one. It is important to do this, so that IESG are also aware that we did review again the document. Pascal: in some places keywords are used not as they should (SHOULD / MUST / MAY). Description of going over the text.. and use appropriate CAPS (MAY -> may, or vice-versa) Pascal: two more bigger comments. One first question was that All-one and Abort cannot be distinguished.. but Dominique explained that the difference is in having a CRC in one / MIC. Need to add a sentence to make it more clear, so that people understand the text. Pascal: do we really need all this complexity, if we only save one message. Laurent: it is difficult to decide. It depends on the probability of packet loss. Pascal: the three All-x mode may be too much, to be discussed in Montreal. Pascal: another concept - fully-received window may not be clear enough.. Laurent: this is an optimization. You can live without it. Pascal: if you miss the first window, you don't know when the window starts.. the text doesn't say that you fall-back to All-x Alexander: other issues wrt the shepherding process? Pascall: no, all good Alexander: we'll move Pascal's comments to the mailing list (hopefully, get them solved by the IETF meeting in Montreal) * [17:20] SCHC CoAP - Laurent [40min] Laurent: draft now explains difference between CoAP and IP/UDP, and added the OSCORE part Laurent: explains how each field is compressed Laurent: presents slide on Message ID Laurent: presents slide on Token length Laurent: currently Max-Age is in seconds, could we introduce a new option so that it could be in minutes for LPWAN (to discuss in the future) Laurent: when we use variable length options, we need to indicate the unit (it was ambiguous from the IP/UDP document) Laurent: Block and SCHC fragmentation are possible. Laurent: OSCORE: work presented in last interim assumed version 5 of OSCORE. Currently, OSCORE has evolved. OSCORE option has to be cut in three fields for SCHC compression. Laurent: due to lack of time, we only have a simple example; we suppressed a CoMI example (that may need to be added in the future) Laurent: it is most important to have a review and discussion with CoAP people. Maybe, joint meeting between lpwan and coap chairs Pascal: I understand we are not fully ready? Do we need to solve the questions in the "To Do" slide? Alexander: can we go ahead with the current CoAP draft as it is? Laurent: WGLC could be done (maybe quality of the writing can be improved) Pascal: let's get the reviews Alexander: agree, we can go ahead with the deep review Pascal: plan is try get the reviews, and if there are no issues, WGLC can be launched after the IETF Laurent: concern is that people in lpwan don't know much about core, and vice versa * [18:00] AOB [ 0min]