[{"name":"SP-170858","title":"LS from SA WG2: LS on the support of Unicast and Groupcast transmission over PC5 for eV2X","source":"SA WG2","contact":"Laeyoung Kim","contact-id":40613,"tdoctype":"LS in","for":"Information","abstract":"SA WG2 would like to inform RAN and RAN WG2 of the conclusion regarding the question on the support of Unicast and Groupcast transmission over PC5 for eV2X from RAN as below (S2-172889\/RP-170841): RAN would like to ask SA WG2, for advanced V2X services (as identified in SA WG1 TR 22.886) provided over PC5, whether any AS layer Unicast and Groupcast transmission mechanism over PC5 is needed, or it could be left to the upper layers (e.g. NAS layer or Application layer) which means only Broadcast transmission mechanism over PC5 is needed in the AS layer. SA WG2 concluded under the study on architecture enhancements for 3GPP support of advanced V2X services (FS_eV2XARC) that in Rel-15 the eV2X Group Communication can be supported with existing V2X communication over PC5 mechanism, thus no change to the existing procedures is required. Regarding support of unicast over PC5 for eV2X, no specific need for Application layer and NAS layer enhancements in Rel-15 were identified by SA WG2, as one","secretary_remarks":"Noted","agenda_item_sort_order":124,"ainumber":"17B.8","ainame":"(FS_eV2XARC) - Study on architecture enhancements for 3GPP support of advanced V2X services","tdoc_agenda_sort_order":12010,"status":"noted","reservation_date":"2017-12-07 10:56:48","uploaded":"2017-12-12 09:00:22","revisionof":"","revisedto":"","release":"Rel-15","crspec":"","crspecversion":"","workitem":[{"winame":"FS_eV2XARC"},{"winame":"LTE_eV2X"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"TSG RAN, RAN WG2","Cc":"TSG SA, SA WG1, SA WG3","lsoriginalls":"S2-178181","lsreply":"","link":"http:\/\/www.3gpp.org\/ftp\/tsg_sa\/TSG_SA\/TSGS_78\/Docs\/SP-170858.zip","group":"SP","meeting":"SP-78","year":2017,"uicc_affected":null,"me_affected":null,"ran_affected":null,"cn_affected":null,"clauses_affected":null,"crsinpack":null,"crsinpacknumber":0}]