[{"name":"SP-150219","title":"TR 26.922 Video Telephony Robustness Improvements Extensions; Performance Evaluation (VTRI_EXT) (Release 13) v. 1.0.0","source":"SA WG4","contact":"Maurice Pope","contact-id":648,"tdoctype":"TS or TR cover","for":"Decision","abstract":"Abstract of document: The present document reports the study on video telephony robustness improvements extensions in Multimedia Telephony Service for IMS and provides recommendation on their applicability for MTSI video telephony applications. These extensions target Error Robustness (ER) for higher bitrate MTSI video telephony as well as inter-working with WLAN use cases where error resiliency is more important. Retransmission, Forward Error Correction (FEC), and complementary Reference Picture Selection Indication (RPSI) Audio Video Profile Feedback (AVPF) mechanisms are discussed and evaluated. Test conditions and evaluation criteria are defined. The performance of the considered error resilience tools is evaluated under the defined testing conditions taking into account packet loss rate\/pattern, end to end delay, bitrate overhead and video smoothness (dropped frames, rendering jitter). Based on the performance results, conclusions are made in terms of recommendations for","secretary_remarks":"","agenda_item_sort_order":116,"ainumber":"13.33","ainame":"(VTRI_EXT) - Video Telephony Robustness Improvements Extensions","tdoc_agenda_sort_order":11120,"status":"noted","reservation_date":"2015-06-09 16:55:56","uploaded":"2015-06-09 16:55:49","revisionof":"","revisedto":"","release":"Rel-13","crspec":26.922,"crspecversion":"1.0.0","workitem":[{"winame":"VTRI_EXT"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"http:\/\/www.3gpp.org\/ftp\/tsg_sa\/TSG_SA\/TSGS_68\/Docs\/SP-150219.zip","group":"SP","meeting":"SP-68","year":2015,"uicc_affected":null,"me_affected":null,"ran_affected":null,"cn_affected":null,"clauses_affected":null,"crsinpack":null,"crsinpacknumber":0}]