[{"name":"S2-1900503","title":"Emergency Call Domain Selection in Roaming Scenarios","source":"NTT DOCOMO","contact":"Itsuma Tanaka","contact-id":61804,"tdoctype":"discussion","for":"Agreement","abstract":"This contribution discusses 1) issues with current specifications and 2) way forward on Emergency Call in Roaming Scenarios","secretary_remarks":"Noted in parallel session","agenda_item_sort_order":11,"ainumber":"5.4","ainame":"IMS and IMS-Related Maintenance","tdoc_agenda_sort_order":10690,"status":"noted","reservation_date":"2019-01-15 08:39:48","uploaded":"2019-01-15 08:44:27","revisionof":"","revisedto":"","release":"Rel-9","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"http:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG2_Arch\/TSGS2_130_Kochi\/Docs\/S2-1900503.zip","group":"S2","meeting":"S2-130","year":2019,"uicc_affected":null,"me_affected":null,"ran_affected":null,"cn_affected":null,"clauses_affected":null,"crsinpack":null,"crsinpacknumber":0},
{"name":"S2-1900680","title":"LS from GSMA PACKET: on MME Functionality to Control Emergency Call Bearer Support Indicator","source":"GSMA PACKET","contact":"Maurice Pope","contact-id":648,"tdoctype":"LS in","for":"Action","abstract":"Background: As VoLTE advances and more operators are launching VoLTE roaming, becomes evident the need for requirements on emergency call such as the willing for VPMN to use IMS emergency call for their subscribers and for specific inbound roaming partners, as well as CSFB for other inbound roaming partners. GSMA NG Packet has agreed that 3GPP specifications allow multiple solutions to cover the above-mentioned requirements. However, operators observed, through testing, that many of those solutions (as outlined in the attached document) are not feasible, and GSMA NG Packet would like to see a unified solution that would work with all VoLTE devices. Only feasible solution seems to be the one which relies on EMC BS Indicator in MME, however, its usage appears to be implementation specific. Request to support selective emission of EMC BS flag by the MME based on Home network: In order to control the domain of emergency call per roaming partner, GSMA NG Packet kindly requests SA WG2 to support and implement the 'Emergency bearer service indicator' (EMC BS) by the MME per Home network (roaming partners) (from the earliest possible 3GPP Release). The following table describes different EMC BS configuration options in order to support different emergency call cases for both VPMN's own users and for inbound roamers.","secretary_remarks":"Postponed.","agenda_item_sort_order":11,"ainumber":"5.4","ainame":"IMS and IMS-Related Maintenance","tdoc_agenda_sort_order":10680,"status":"postponed","reservation_date":"2019-01-15 15:14:11","uploaded":"2019-01-15 15:18:59","revisionof":"","revisedto":"S2-1901420","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"SA WG2","Cc":"","lsoriginalls":"Packet 100_202","lsreply":"","link":"http:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG2_Arch\/TSGS2_130_Kochi\/Docs\/S2-1900680.zip","group":"S2","meeting":"S2-130","year":2019,"uicc_affected":null,"me_affected":null,"ran_affected":null,"cn_affected":null,"clauses_affected":null,"crsinpack":null,"crsinpacknumber":0},
{"name":"S2-1900681","title":"LS from GSMA RILTE: LS to SA WG2 and SA WG5 on VoWiFi - VoLTE handover","source":"GSMA RILTE","contact":"Maurice Pope","contact-id":648,"tdoctype":"LS in","for":"Action","abstract":"NG RILTE has been made aware by several operators about roaming related scenarios, whereby a UE that started a voice session using VoWiFi subsequently performs a handover to VoLTE. This situation was observed to occur regardless of whether the visited network indicated VoLTE support with VoPS (Voice over PS) indication or not. NG RILTE has some questions related to the cited scenario that seem not to be addressed by existing 3GPP specifications: Q1: How can the handover be prevented in situations where the visited network does not send VoPS indication, i.e. it either does not support VoLTE or it supports VoLTE but does not have VoLTE roaming agreement with the home network of the inbound roamer? Q2: How can a handover be prevented in situations where the visited network wants to block handovers in certain TACs from all users (including own users) regardless of roaming agreements? Q3: How can the visited network properly charge a session that is handed over between VoWiFi and VoLTE assuming the visited network supports VoLTE and has a VoLTE roaming agreement with the home network of the inbound roamer?. Action: to SA WG2: NG RILTE kindly asks SA WG2 to respond to the above questions.","secretary_remarks":"Postponed in parallel session","agenda_item_sort_order":11,"ainumber":"5.4","ainame":"IMS and IMS-Related Maintenance","tdoc_agenda_sort_order":10700,"status":"postponed","reservation_date":"2019-01-16 07:50:29","uploaded":"2019-01-16 07:51:09","revisionof":"","revisedto":"S2-1901421","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"SA WG2, SA WG5","Cc":"CT WG1","lsoriginalls":"RILTE67_116","lsreply":"","link":"http:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG2_Arch\/TSGS2_130_Kochi\/Docs\/S2-1900681.zip","group":"S2","meeting":"S2-130","year":2019,"uicc_affected":null,"me_affected":null,"ran_affected":null,"cn_affected":null,"clauses_affected":null,"crsinpack":null,"crsinpacknumber":0}]