[{"name":"S2-2105348","title":"[DRAFT] LS on Topics of concern to the BBF","source":"Nokia, Nokia Shanghai Bell","contact":"Laurent Thiebaut","contact-id":68713,"tdoctype":"LS out","for":"Approval","abstract":"LS on Topics of concern to the BBF","secretary_remarks":"Response to S2-2105358. Merged into S2-2106577","agenda_item_sort_order":27,"ainumber":"7.2","ainame":"Wireless and Wireline Convergence for the 5G system architecture (5WWC)","tdoc_agenda_sort_order":11880,"status":"merged","reservation_date":"2021-07-22 16:57:58","uploaded":"2021-08-09 20:02:52","revisionof":"","revisedto":"","release":"","crspec":"","crspecversion":"","workitem":[{"winame":"5WWC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"BBF","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG2_Arch\/TSGS2_146E_Electronic_2021-08\/Docs\/S2-2105348.zip","group":"S2","meeting":"S2-146-e","year":2021,"uicc_affected":null,"me_affected":null,"ran_affected":null,"cn_affected":null,"clauses_affected":null,"crsinpack":null,"crsinpacknumber":0},
{"name":"S2-2105358","title":"LS from BBF: Topics of concern to the BBF","source":"BBF","contact":"Lincoln Lavoie","contact-id":39231,"tdoctype":"LS in","for":"Action","abstract":"Dear colleagues, The BBF continues to review 3GPP procedures and their relevance to our WWC work. We have identified a couple of items that we want to bring to your attention: 1) We are noting that there are heterogeneous wireline access MTUs in BBF networks. Because of the various protocol stacks involved and the potential change in stacks resulting from equipment upgrade from FN-RG to 5G-RG we would note that the MTU of the access link is not uniform across a BBF access network and can change on a per-subscription basis. What is more we would note that many operators may consider having to move to an MTU smaller than that currently employed due to GTP overhead under all circumstances to be regressive. A particular scenario of interest is that of the co-located AGF\/UPF where there will not be the overhead of GTP tunneling applied to any PDU session traffic served by the collocated UPF, therefore limiting MTU to that of traffic that will be tunneled is undesirable. We also note that in this scenario the actual wireline access MTU is known at all ingress points to the 5G system for all PDU sessions terminated on a combined platform. So if we were to permit a larger MTU for sessions that terminated in a combined W-AGF\/UPF the problem is that the MTU advertised by an SMF in PCO and RAs would be the one consumed by a 5G-RG. What would be of great utility to us would be if an SMF could be configured with a different MTU value to use in lieu of the transport MTU when advertising an Ethernet Frame Payload MTU parameter or IPv4 Link MTU parameter via PCO and\/or IPv6 RA MTU parameter for a single access PDU session terminated on a combined AGF\/UPF. We actually expect to see a plurality of actual wireline access MTU values depending on the FN-RG or 5G-RG type, deployed DSLAMs and OLTs, but in the combined AGF\/UPF case adjusting the received MTU value to the actual MTU can be addressed local to the equipment specified by the BBF. We only really need to know if the transport N3 MTU is a genuine constraint. Hence the desire to have a MTU value communicated to a 5G-RG that reflects this. We would also note that this imposes some restrictions, such as a single access PDU session configured to use the 2nd MTU value could not be upgraded to MA-PDU, or handed off to a 3GPP access as this would require a common and immutable MTU for the session across the 3GPP and non-3GPP accesses. 2) In the longer term we would appreciate a mechanism whereby the wireline access MTU was advertised to an SMF as part of PDU session establishment procedures such that in the scenario where the transport N3 MTU was greater than the wireline access MTU the MTU that the UPF acted on for downstream traffic was the minimum of both the transport N3 MTU and the wireline access MTU and we avoided the additional delays of possible rejecting as too big downstream traffic at both a UPF and a W-AGF. Our understanding is this would be a small component of a larger problem in supporting heterogeneous MTUs in the mobile network so at this point we would simply request this be considered as an input to any future efforts to address that or other MTU problems. 3) We are considering use cases where we would find it desirable to append additional information to a GLI when constructing a SUPI for FN-RG support. This would permit more than one subscription to be associated with a GLI identified facility. The extension would add a maximum of 14 bytes to the GLI encoded SUPI after the base 64 encoding. We believe if the additions were confined to the SUPI this would be transparent to the 5G system when compared to the currently specified practice. The ULI would be encoded as currently specified. Can you confirm that this does not introduce issues to the 5G System? 4) We have a use case in FN-RG support whereby we would wish to use the realm information in an NAI received as part of PPP authentication procedures for DNN\/slice selection. Part of our use case would be to potentially transla","secretary_remarks":"Responses drafted in S2-2105348 and S2-2105526. 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{"name":"S2-2105524","title":"SSC modes for FN-RG","source":"Ericsson","contact":"Shabnam Sultana","contact-id":21207,"tdoctype":"CR","for":"Approval","abstract":"Summary of change: Clarify SSC modes applicable for FN-RGs","secretary_remarks":"Approved","agenda_item_sort_order":27,"ainumber":"7.2","ainame":"Wireless and Wireline Convergence for the 5G system architecture (5WWC)","tdoc_agenda_sort_order":11910,"status":"agreed","reservation_date":"2021-08-06 18:04:47","uploaded":"2021-08-10 13:05:16","revisionof":"","revisedto":"","release":"Rel-16","crspec":23.316,"crspecversion":"16.6.0","workitem":[{"winame":"5WWC"}],"crnumber":2057.0,"crrevision":"","crcategory":"F","tsg_crp":"SP-210912","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG2_Arch\/TSGS2_146E_Electronic_2021-08\/Docs\/S2-2105524.zip","group":"S2","meeting":"S2-146-e","year":2021,"uicc_affected":null,"me_affected":null,"ran_affected":null,"cn_affected":null,"clauses_affected":null,"crsinpack":null,"crsinpacknumber":0},
{"name":"S2-2105525","title":"SSC modes for FN-RG","source":"Ericsson","contact":"Shabnam Sultana","contact-id":21207,"tdoctype":"CR","for":"Approval","abstract":"Rel-17 mirror CR: Summary of change: Clarify SSC modes applicable for FN-RGs","secretary_remarks":"Approved","agenda_item_sort_order":27,"ainumber":"7.2","ainame":"Wireless and Wireline Convergence for the 5G system architecture (5WWC)","tdoc_agenda_sort_order":11920,"status":"agreed","reservation_date":"2021-08-06 18:04:48","uploaded":"2021-08-10 13:05:16","revisionof":"","revisedto":"","release":"Rel-17","crspec":23.316,"crspecversion":"17.0.0","workitem":[{"winame":"5WWC"}],"crnumber":2058.0,"crrevision":"","crcategory":"A","tsg_crp":"SP-210912","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG2_Arch\/TSGS2_146E_Electronic_2021-08\/Docs\/S2-2105525.zip","group":"S2","meeting":"S2-146-e","year":2021,"uicc_affected":null,"me_affected":null,"ran_affected":null,"cn_affected":null,"clauses_affected":null,"crsinpack":null,"crsinpacknumber":0},
{"name":"S2-2105526","title":"[DRAFT] Reply LS on Topics of concern to the BBF","source":"Ericsson","contact":"Shabnam Sultana","contact-id":21207,"tdoctype":"LS out","for":"Approval","abstract":"This LS provides a replay to BBF LS LIAISE-464","secretary_remarks":"Response to S2-2105358. Revised to S2-2106577, merging S2-2105348","agenda_item_sort_order":27,"ainumber":"7.2","ainame":"Wireless and Wireline Convergence for the 5G system architecture (5WWC)","tdoc_agenda_sort_order":11890,"status":"revised","reservation_date":"2021-08-06 18:04:49","uploaded":"2021-08-10 13:05:16","revisionof":"","revisedto":"S2-2106577","release":"","crspec":"","crspecversion":"","workitem":[{"winame":"5WWC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"BBF","Cc":"CT WG4","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG2_Arch\/TSGS2_146E_Electronic_2021-08\/Docs\/S2-2105526.zip","group":"S2","meeting":"S2-146-e","year":2021,"uicc_affected":null,"me_affected":null,"ran_affected":null,"cn_affected":null,"clauses_affected":null,"crsinpack":null,"crsinpacknumber":0},
{"name":"S2-2106232","title":"Clarification on SSC mode that different types of FN-RG can use","source":"Huawei, HiSilicon","contact":"Marco Spini","contact-id":8356,"tdoctype":"CR","for":"Approval","abstract":"Summary of change: Add a difference below the bullet in clause 4.4.2. In terms of SSC mode, for IPoE FN-RGs only SSC mode 1 can be used and for PPPoE FN-RGs only SSC modes 1 and 2 may be used.","secretary_remarks":"Noted","agenda_item_sort_order":27,"ainumber":"7.2","ainame":"Wireless and Wireline Convergence for the 5G system architecture (5WWC)","tdoc_agenda_sort_order":11930,"status":"noted","reservation_date":"2021-08-10 12:05:56","uploaded":"2021-08-10 15:07:26","revisionof":"","revisedto":"","release":"Rel-16","crspec":23.316,"crspecversion":"16.6.0","workitem":[{"winame":"5WWC"}],"crnumber":2059.0,"crrevision":"","crcategory":"F","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG2_Arch\/TSGS2_146E_Electronic_2021-08\/Docs\/S2-2106232.zip","group":"S2","meeting":"S2-146-e","year":2021,"uicc_affected":null,"me_affected":null,"ran_affected":null,"cn_affected":null,"clauses_affected":null,"crsinpack":null,"crsinpacknumber":0},
{"name":"S2-2106233","title":"Clarification on SSC mode that different types of FN-RG can use","source":"Huawei, HiSilicon","contact":"Marco Spini","contact-id":8356,"tdoctype":"CR","for":"Approval","abstract":"Rel-17 mirror CR: Summary of change: Add a difference below the bullet in clause 4.4.2. In terms of SSC mode, for IPoE FN-RGs only SSC mode 1 can be used and for PPPoE FN-RGs only SSC modes 1 and 2 may be used.","secretary_remarks":"Noted","agenda_item_sort_order":27,"ainumber":"7.2","ainame":"Wireless and Wireline Convergence for the 5G system architecture (5WWC)","tdoc_agenda_sort_order":11940,"status":"noted","reservation_date":"2021-08-10 12:05:57","uploaded":"2021-08-10 15:07:26","revisionof":"","revisedto":"","release":"Rel-17","crspec":23.316,"crspecversion":"17.0.0","workitem":[{"winame":"5WWC"}],"crnumber":2060.0,"crrevision":"","crcategory":"A","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG2_Arch\/TSGS2_146E_Electronic_2021-08\/Docs\/S2-2106233.zip","group":"S2","meeting":"S2-146-e","year":2021,"uicc_affected":null,"me_affected":null,"ran_affected":null,"cn_affected":null,"clauses_affected":null,"crsinpack":null,"crsinpacknumber":0},
{"name":"S2-2106234","title":"Emergency services for non-3GPP access","source":"Huawei, HiSilicon","contact":"Marco Spini","contact-id":8356,"tdoctype":"CR","for":"Approval","abstract":"Summary of change: Untrusted non-3GPP access is reworded to non-3GPP access when trusted non-3GPP access also supports. Add reference to clause 4.9.3 about trusted non-3GPP acess.","secretary_remarks":"Approved","agenda_item_sort_order":27,"ainumber":"7.2","ainame":"Wireless and Wireline Convergence for the 5G system architecture (5WWC)","tdoc_agenda_sort_order":11950,"status":"agreed","reservation_date":"2021-08-10 12:05:58","uploaded":"2021-08-10 15:07:26","revisionof":"","revisedto":"","release":"Rel-16","crspec":23.501,"crspecversion":"16.9.0","workitem":[{"winame":"5WWC"}],"crnumber":3177.0,"crrevision":"","crcategory":"F","tsg_crp":"SP-210912","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG2_Arch\/TSGS2_146E_Electronic_2021-08\/Docs\/S2-2106234.zip","group":"S2","meeting":"S2-146-e","year":2021,"uicc_affected":null,"me_affected":null,"ran_affected":null,"cn_affected":null,"clauses_affected":null,"crsinpack":null,"crsinpacknumber":0},
{"name":"S2-2106235","title":"Emergency services for non-3GPP access","source":"Huawei, HiSilicon","contact":"Marco Spini","contact-id":8356,"tdoctype":"CR","for":"Approval","abstract":"Rel-17 mirror CR: Summary of change: Untrusted non-3GPP access is reworded to non-3GPP access when trusted non-3GPP access also supports. Add reference to clause 4.9.3 about trusted non-3GPP acess.","secretary_remarks":"Approved","agenda_item_sort_order":27,"ainumber":"7.2","ainame":"Wireless and Wireline Convergence for the 5G system architecture (5WWC)","tdoc_agenda_sort_order":11960,"status":"agreed","reservation_date":"2021-08-10 12:05:58","uploaded":"2021-08-10 15:07:26","revisionof":"","revisedto":"","release":"Rel-17","crspec":23.501,"crspecversion":"17.1.1","workitem":[{"winame":"5WWC"}],"crnumber":3178.0,"crrevision":"","crcategory":"A","tsg_crp":"SP-210912","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG2_Arch\/TSGS2_146E_Electronic_2021-08\/Docs\/S2-2106235.zip","group":"S2","meeting":"S2-146-e","year":2021,"uicc_affected":null,"me_affected":null,"ran_affected":null,"cn_affected":null,"clauses_affected":null,"crsinpack":null,"crsinpacknumber":0},
{"name":"S2-2106577","title":"Reply LS on Topics of concern to the BBF","source":"SA WG2","contact":"Stefan Rommer","contact-id":25950,"tdoctype":"LS out","for":"Approval","abstract":"To: BBF. CC: CT WG4. Attachment: TS 23.316 CRs #2057 (Rel-16) and #2058 (Rel-17)","secretary_remarks":"Revision of S2-2105526r03, merging S2-2105348. Approved","agenda_item_sort_order":27,"ainumber":"7.2","ainame":"Wireless and Wireline Convergence for the 5G system architecture (5WWC)","tdoc_agenda_sort_order":11900,"status":"approved","reservation_date":"2021-08-23 08:42:48","uploaded":"2021-09-01 14:31:23","revisionof":"S2-2105526","revisedto":"","release":"Rel-17","crspec":"","crspecversion":"","workitem":[{"winame":"5WWC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"S2-2105358","lsto":"BBF","Cc":"CT WG4","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG2_Arch\/TSGS2_146E_Electronic_2021-08\/Docs\/S2-2106577.zip","group":"S2","meeting":"S2-146-e","year":2021,"uicc_affected":null,"me_affected":null,"ran_affected":null,"cn_affected":null,"clauses_affected":null,"crsinpack":null,"crsinpacknumber":0}]