[{"name":"C4-240031","title":"Revised SID on IMS Disaster Prevention and Restoration Enhancement","source":"Chinatelecom Cloud","contact":"Liu Liu","contact-id":76788,"tdoctype":"WID revised","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":9,"ainumber":"5.1","ainame":"CT4 Led WIs","tdoc_agenda_sort_order":310,"status":"withdrawn","reservation_date":"2024-01-31 03:16:28","uploaded":"2024-01-31 07:24:24","revisionof":"","revisedto":"","release":"Rel-18","crspec":"","crspecversion":"","workitem":[{"winame":"FS_IMS_RES"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_ct\/WG4_protocollars_ex-CN4\/TSGCT4_121_Athens\/Docs\/C4-240031.zip","group":"C4","meeting":"C4-121","year":2024,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"C4-240257","title":"New WID on CT impacts of EVS Codec Extension for Immersive Voice and Audio Services","source":"Nokia, Nokia Shanghai Bell","contact":"Bruno Landais","contact-id":68755,"tdoctype":"WID new","for":"Agreement","abstract":"The introduction of 4G\/5G high-speed wireless access to telecommunications networks, combined with the availability of increasingly powerful hardware platforms, will enable advanced communications and multimedia services to be deployed more quickly and easily than ever before. Immersive services, applications and devices, as envisioned in 3GPP TR 22.891 are expected to provide an immersive user experience which, when compared to existing media services, will deliver a quantum leap in the quality of experience. Immersiveness will be a core service attribute of eXtended Reality (XR) ranging from VR over MR to AR, as described in TRs 26.918, 26.928 and 26.998. An immersive audio-visual experience implies, for the audio component, that a spatial sound impression is convincingly consistent with the presented visual scene and\/or the real-world scene in the AR\/MR case. In addition, the user should be able to move, within certain limits defined by the application, throughout the scene, and the audio component will adjust to reflect the user\u2019s spatial orientation\/position. \n\nSA4 has developed a new codec for Immersive Voice and Audio Services (IVAS codec) in Rel-18, which is an extension of the 3GPP Enhanced Voice Services (EVS) codec, to address the increasing demand for rich and immersive multimedia services. In addition, teleconferencing applications over 4G\/5G will benefit from this next generation codec used as an improved conversational coder supporting multi-stream coding (e.g., channel, object and scene-based audio). Use cases for this next generation codec include, but are not limited to, conversational voice, multi-stream teleconferencing, VR conversational and user generated live and non-live content streaming, AR\/MR. The approach proposed is to build upon the EVS codec with the goal of developing a single codec with attractive features and performance (e.g. excellent audio quality, low delay, spatial audio coding support, appropriate range of bit rates, high-quality error resiliency, practical implementation complexity). In the scope of 3GPP the predominant audio rendering instrument is envisaged to be headphones but configurations with e.g. tablet speaker playback may also be of relevance.\n\nSA4 specifications on IVAS (TS 26.252, 26.253, 26.254, 26.255 and 26.256) are sent for approval to SA#103 (March 2024). SA4 is expected to finalize its work by June 2024 (with characterization testing results available in August 2024).\n\nThe objective of this work item is to add support for the IVAS codec in MTSI, based on the requirements in SA4 specifications, to the specifications under CT WGs responsibility.\n\nThis includes:\n\n1.\tDefining how the parameters of the IVAS codec are handled on H.248 interfaces for the purpose of transcoding.\n2.\tPossible enhancements to Codec Interworking procedures towards CS networks at the MGCF and IM-MGW, and at the MSC server enhanced for ICS.\n3.\tPossible updates to the IMS SIP\/SDP Profile to support the IVAS codec.\nThe IVAS codec is not supported within CS networks.","secretary_remarks":"","agenda_item_sort_order":9,"ainumber":"5.1","ainame":"CT4 Led WIs","tdoc_agenda_sort_order":2570,"status":"revised","reservation_date":"2024-02-15 14:46:42","uploaded":"2024-02-19 16:11:50","revisionof":"","revisedto":"C4-240556","release":"Rel-18","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_ct\/WG4_protocollars_ex-CN4\/TSGCT4_121_Athens\/Docs\/C4-240257.zip","group":"C4","meeting":"C4-121","year":2024,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"C4-240258","title":"Rel-18 Work Item Exception for CT impacts of EVS Codec Extension for Immersive Voice and Audio Services","source":"Nokia, Nokia Shanghai Bell","contact":"Bruno Landais","contact-id":68755,"tdoctype":"WI exception request","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":9,"ainumber":"5.1","ainame":"CT4 Led WIs","tdoc_agenda_sort_order":2580,"status":"revised","reservation_date":"2024-02-15 14:46:42","uploaded":"2024-02-19 16:11:50","revisionof":"","revisedto":"C4-240557","release":"Rel-18","crspec":"","crspecversion":"","workitem":[{"winame":"IVAS_Codec"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_ct\/WG4_protocollars_ex-CN4\/TSGCT4_121_Athens\/Docs\/C4-240258.zip","group":"C4","meeting":"C4-121","year":2024,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"C4-240499","title":"Revised WID on CT aspects of UPF enhancement for exposure and SBA","source":"CT4","contact":"RONG WANG","contact-id":87346,"tdoctype":"WID revised","for":"Approval","abstract":"","secretary_remarks":"","agenda_item_sort_order":9,"ainumber":"5.1","ainame":"CT4 Led WIs","tdoc_agenda_sort_order":5510,"status":"revised","reservation_date":"2024-02-19 09:45:31","uploaded":"2024-02-19 14:07:25","revisionof":"CP-232027","revisedto":"C4-240558","release":"Rel-18","crspec":"","crspecversion":"","workitem":[{"winame":"UPEAS"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_ct\/WG4_protocollars_ex-CN4\/TSGCT4_121_Athens\/Docs\/C4-240499.zip","group":"C4","meeting":"C4-121","year":2024,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"C4-240551","title":"Work Plan for CT Work on IVAS_Codec","source":"Nokia, Nokia Shanghai Bell","contact":"Bruno Landais","contact-id":68755,"tdoctype":"discussion","for":"Discussion","abstract":"","secretary_remarks":"","agenda_item_sort_order":9,"ainumber":"5.1","ainame":"CT4 Led WIs","tdoc_agenda_sort_order":4990,"status":"noted","reservation_date":"2024-02-19 15:24:29","uploaded":"2024-02-20 12:16:08","revisionof":"","revisedto":"","release":"Rel-18","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_ct\/WG4_protocollars_ex-CN4\/TSGCT4_121_Athens\/Docs\/C4-240551.zip","group":"C4","meeting":"C4-121","year":2024,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"C4-240556","title":"New WID on CT impacts of EVS Codec Extension for Immersive Voice and Audio Services","source":"Nokia, Nokia Shanghai Bell","contact":"Kimmo Kymalainen","contact-id":85426,"tdoctype":"WID new","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":9,"ainumber":"5.1","ainame":"CT4 Led WIs","tdoc_agenda_sort_order":2571,"status":"agreed","reservation_date":"2024-02-26 09:08:12","uploaded":"2024-03-01 06:51:04","revisionof":"C4-240257","revisedto":"","release":"Rel-18","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_ct\/WG4_protocollars_ex-CN4\/TSGCT4_121_Athens\/Docs\/C4-240556.zip","group":"C4","meeting":"C4-121","year":2024,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"C4-240557","title":"Rel-18 Work Item Exception for CT impacts of EVS Codec Extension for Immersive Voice and Audio Services","source":"Nokia, Nokia Shanghai Bell","contact":"Kimmo Kymalainen","contact-id":85426,"tdoctype":"WI exception request","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":9,"ainumber":"5.1","ainame":"CT4 Led WIs","tdoc_agenda_sort_order":0,"status":"agreed","reservation_date":"2024-02-26 09:14:55","uploaded":"2024-03-01 08:31:05","revisionof":"C4-240258","revisedto":"","release":"Rel-18","crspec":"","crspecversion":"","workitem":[{"winame":"IVAS_Codec"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_ct\/WG4_protocollars_ex-CN4\/TSGCT4_121_Athens\/Docs\/C4-240557.zip","group":"C4","meeting":"C4-121","year":2024,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"C4-240558","title":"Revised WID on CT aspects of UPF enhancement for exposure and SBA","source":"CT4","contact":"Kimmo Kymalainen","contact-id":85426,"tdoctype":"WID revised","for":"Approval","abstract":"","secretary_remarks":"","agenda_item_sort_order":9,"ainumber":"5.1","ainame":"CT4 Led WIs","tdoc_agenda_sort_order":5511,"status":"agreed","reservation_date":"2024-02-26 09:19:34","uploaded":"2024-03-01 06:51:04","revisionof":"C4-240499","revisedto":"","release":"Rel-18","crspec":"","crspecversion":"","workitem":[{"winame":"UPEAS"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_ct\/WG4_protocollars_ex-CN4\/TSGCT4_121_Athens\/Docs\/C4-240558.zip","group":"C4","meeting":"C4-121","year":2024,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0}]