[{"name":"S2-181838","title":"LS from SA WG4: LS on Dynamic PLR Allocation in eVoLP","source":"SA WG4","contact":"Ozgur Oyman","contact-id":44803,"tdoctype":"LS in","for":"Action","abstract":"As part of the Rel-15 study item on 'Enhanced VoLTE Performance' (FS_eVoLP), SA WG4 is currently investigating the media handling support and potential enhancements for the codec-aware SRVCC optimizations, toward supplementing the SA WG2-defined normative eVoLP features in TS 23.203 and 23.401. The findings of this study are documented in TR 26.959 (latest version is attached). One of the identified eVoLP enhancements by SA WG4 is around a dynamic PLR allocation framework on DL PLR and UL PLR thresholds as described in clauses 8.2.2.4 and 8.2.3.6 of the attached TR 26.959. This framework enables further optimizations of the SRVCC thresholds for DL and UL after setting of the DL PLR and UL PLR thresholds at the eNB based on the SA WG2-defined signalling from the PCRF. The dynamic PLR allocation realizes this enhancement by adapting the DL PLR and UL PLR thresholds to the local RAN conditions considering UE coverage, leading to the SRVCC performance improvements as documented in TR 26.95","secretary_remarks":"Noted in parallel session.","agenda_item_sort_order":11,"ainumber":"5.4","ainame":"IMS and IMS-Related Maintenance","tdoc_agenda_sort_order":10770,"status":"noted","reservation_date":"2018-02-19 09:33:19","uploaded":"2018-02-19 10:07:55","revisionof":"","revisedto":"","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"RAN WG2, SA WG2","Cc":"-","lsoriginalls":"S4-180219","lsreply":"","link":"http:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG2_Arch\/TSGS2_126_Montreal\/Docs\/S2-181838.zip","group":"S2","meeting":"S2-126","year":2018,"uicc_affected":null,"me_affected":null,"ran_affected":null,"cn_affected":null,"clauses_affected":null,"crsinpack":null,"crsinpacknumber":0}]