[{"name":"S4-260126","title":"[FS_ULBC] Analysis on complexity evaluation of ULBC with WMOPS","source":"Bytedance","contact":"June Sun","contact-id":108581,"tdoctype":"discussion","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-03-02 07:16:14","uploaded":"2026-02-03 07:40:45","revisionof":"","revisedto":"S4-260415","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260126.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260128","title":"[FS_ULBC] Influence of code optimization on WMOPS","source":"Bytedance","contact":"June Sun","contact-id":108581,"tdoctype":"pCR","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"noted","reservation_date":"2026-03-02 07:35:43","uploaded":"2026-02-03 07:42:33","revisionof":"","revisedto":"","release":"Rel-20","crspec":26.94,"crspecversion":"0.4.0","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260128.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260132","title":"[FS_ULBC] Discussion of FS_ULBC Objective Speech Quality Assessment Method","source":"China Mobile Com. Corporation","contact":"Fei Gao","contact-id":90252,"tdoctype":"pCR","for":"","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"noted","reservation_date":"2026-03-02 09:04:41","uploaded":"2026-02-03 09:17:16","revisionof":"S4-251814","revisedto":"","release":"Rel-20","crspec":26.94,"crspecversion":"0.4.0","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260132.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260136","title":"Updates to the simulation results for FS_ULBC","source":"Xiaomi Technology","contact":"Bin Wang","contact-id":93219,"tdoctype":"discussion","for":"Discussion","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"noted","reservation_date":"2026-03-02 11:34:29","uploaded":"2026-02-03 13:37:11","revisionof":"S4-251800","revisedto":"","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260136.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260137","title":"[FS_ULBC] On eCall scenario for ULBC","source":"Huawei Technologies Co., Ltd.","contact":"Lei Li","contact-id":114118,"tdoctype":"pCR","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-03-02 11:40:32","uploaded":"2026-02-03 12:48:05","revisionof":"","revisedto":"S4-260364","release":"Rel-20","crspec":26.94,"crspecversion":"0.5.0","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260137.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260141","title":"[FS_ULBC] On target platforms for ULBC","source":"Huawei Technologies Co., Ltd.","contact":"Lei Li","contact-id":114118,"tdoctype":"pCR","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-03-02 12:09:52","uploaded":"2026-02-03 12:42:28","revisionof":"","revisedto":"S4-260354","release":"Rel-20","crspec":26.94,"crspecversion":"0.4.0","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260141.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260142","title":"[FS_ULBC] On complexity and memory constraints for ULBC","source":"Huawei Technologies Co., Ltd.","contact":"Lei Li","contact-id":114118,"tdoctype":"pCR","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"noted","reservation_date":"2026-03-02 12:11:21","uploaded":"2026-02-03 12:43:02","revisionof":"","revisedto":"","release":"Rel-20","crspec":26.94,"crspecversion":"0.4.0","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260142.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260144","title":"[FS_ULBC]TR 26.940 V 0.5.1","source":"China Mobile Com. Corporation","contact":"Jiayi Xu","contact-id":89460,"tdoctype":"draft TR","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-03-02 12:12:59","uploaded":"2026-02-03 13:12:23","revisionof":"","revisedto":"S4-260424","release":"Rel-20","crspec":26.94,"crspecversion":"0.5.1","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260144.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260146","title":"[FS_ULBC] Permanent Document v0.5.0","source":"China Mobile Com. Corporation","contact":"Jiayi Xu","contact-id":89460,"tdoctype":"discussion","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-03-02 12:18:28","uploaded":"2026-02-03 13:12:55","revisionof":"","revisedto":"S4-260434","release":"Rel-20","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260146.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260148","title":"[FS_ULBC] WorkPlan of FS_ULBC v0.5","source":"China Mobile Com. Corporation","contact":"Jiayi Xu","contact-id":89460,"tdoctype":"Work Plan","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-03-02 12:26:01","uploaded":"2026-02-03 13:05:26","revisionof":"","revisedto":"S4-260435","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260148.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260149","title":"[FS_ULBC] On Assumptions and Open Issues for NB-IoT GEO Simulation","source":"China Mobile Com. Corporation","contact":"Jiayi Xu","contact-id":89460,"tdoctype":"discussion","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-03-02 12:30:00","uploaded":"2026-02-03 13:04:48","revisionof":"","revisedto":"S4-260370","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260149.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260150","title":"[FS_ULBC] Updates of the permanent document based on 3GPP TR 23.700-19","source":"vivo Mobile Communication Co.,","contact":"Wang Dong","contact-id":107237,"tdoctype":"pCR","for":"Agreement","abstract":"SA2 has reached conclusions on Key Issue #1 regarding the support of IMS voice call over NB-IoT via GEO satellite connecting to EPC, as documented in TR 23.700-19. It has been agreed that voice packets shall be transported over the NB-IoT (GEO) user plane (UP) using DRB and S1-U, and that a single PDN connection shall be used for both IMS signaling and IMS voice. Furthermore, the TR specifies that the voice data transport mechanism of IP packets is mandatory (UP\/IP, recommended with RoHC), whereas the mechanism involving the removal and restoration of parts of RTP\/UDP\/IP headers is optional (UP\/non-IP). This contribution updates the FS_ULBC Permanent Document to align the transport path assumptions and solution details with these agreements.","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-03-02 12:30:43","uploaded":"2026-02-03 13:43:09","revisionof":"S4-251975","revisedto":"S4-260386","release":"Rel-20","crspec":26.94,"crspecversion":"0.4.0","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260150.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260151","title":"[FS_ULBC]Considerations for ULBC Codec Selection Process","source":"China Mobile Com. Corporation","contact":"Jiayi Xu","contact-id":89460,"tdoctype":"discussion","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"noted","reservation_date":"2026-03-02 12:31:22","uploaded":"2026-02-03 13:03:44","revisionof":"","revisedto":"","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260151.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260152","title":"[FS_ULBC] Analyzing semantic intelligibility in lossy coded audio signals","source":"vivo Mobile Communication Co., Nokia, Xiaomi Technology, Samsung, Spreadtrum, Bytedance","contact":"Wang Dong","contact-id":107237,"tdoctype":"pCR","for":"Agreement","abstract":"This document presents the results of an experimental evaluation focusing on the semantic intelligibility of audio codecs under Ultra-Low Speech Bitrate (ULBC) [1] constraints. While traditional quality metrics often focus on perceptual quality (MOS), the primary objective of this paper is to quantify semantic preservation (the ability of the listener to accurately understand the spoken content) using automatic speech recognition (ASR) word error rate (WER) as a proxy.","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"noted","reservation_date":"2026-03-02 12:33:20","uploaded":"2026-02-03 13:43:09","revisionof":"","revisedto":"","release":"Rel-20","crspec":26.94,"crspecversion":"0.4.0","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260152.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260154","title":"[FS_ULBC]pCR on Existing codec technologies","source":"China Mobile Com. Corporation","contact":"Jiayi Xu","contact-id":89460,"tdoctype":"pCR","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"agreed","reservation_date":"2026-03-02 12:35:46","uploaded":"2026-02-03 13:01:22","revisionof":"","revisedto":"","release":"Rel-20","crspec":26.94,"crspecversion":"0.5.1","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260154.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260155","title":"[FS_ULBC] Analysis of AI Codec Real-Time Performance (RTF) and Complexity Scaling","source":"vivo Mobile Communication Co., Xiaomi Technology, Spreadtrum, Bytedance","contact":"Wang Dong","contact-id":107237,"tdoctype":"pCR","for":"Agreement","abstract":"As part of the study on the new Ultra Low Bitrate Speech Codec (ULBC) [1], it is necessary to establish complexity constraints that reflect real-world device capabilities. Previous contributions have analyzed theoretical complexity using static metrics such as FLOPs and WMOPS [2] [5]. However, static metrics often fail to capture system-level bottlenecks, such as memory bandwidth pressure and thermal constraints on mobile System-on-Chips (SoCs).\nThis contribution presents a comprehensive performance analysis of a neural audio codec (based on the Descript Audio Codec architecture) running on a representative mid-range mobile platform. By sweeping across model sizes (1M to 74M parameters) and sample rates (8, 16, 32 kHz), we evaluate the correlation between theoretical complexity and the Real-Time Factor (RTF).","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-03-02 12:35:47","uploaded":"2026-02-03 13:43:09","revisionof":"","revisedto":"S4-260445","release":"Rel-20","crspec":26.94,"crspecversion":"0.4.0","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260155.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260157","title":"[FS_ULBC] Discussion on Audio Bandwidth for ULBC","source":"vivo, Samsung, MediaTek Inc., Bytedance, Nokia, Xiaomi, Spreadtrum","contact":"Wang Dong","contact-id":107237,"tdoctype":"pCR","for":"Agreement","abstract":"This document provides a technical discussion on the audio bandwidth design constraints for the Ultra-Low Bitrate Codec (ULBC) [1]. As 3GPP is to define in this work the requirements for a codec intended for extremely constrained environments, mainly on satellite (GEO) communications, it is crucial to prioritize design choices that maximize robustness and efficiency.\nRecent discussions have considered possible mandating Wideband (WB) and Super-Wideband (SWB) support for ULBC [2]. However, we argue that for the target use cases, mandatory support for Narrowband (NB) is essential, while whether wider bandwidths should be considered further enhancements of this baseline. This paper synthesizes key technical arguments and presents new experimental data to support a design philosophy focusing on performance in the most challenging conditions.","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"noted","reservation_date":"2026-03-02 12:37:15","uploaded":"2026-02-03 13:43:09","revisionof":"S4-251794","revisedto":"","release":"Rel-20","crspec":26.94,"crspecversion":"0.4.0","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260157.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260158","title":"[FS_ULBC] Analysis of AI Codec Complexity Scaling","source":"vivo Mobile Communication Co.,","contact":"Wang Dong","contact-id":107237,"tdoctype":"pCR","for":"Agreement","abstract":"For the standardization of the new ULBC codec [1], establishing a relevant method for evaluating complexity is essential. Previous contributions (e.g., S4aA250264 [2]) have highlighted the potential gap between theoretical complexity metrics (e.g., FLOPs) and practical, on-device performance (e.g., Real-Time Factor). \nA complementary aspect to this discussion is understanding how these complexity metrics scale, not just with frame size, but with the AI model's architecture itself. As AI-based codecs may be proposed with different model sizes or \"operating points\" (e.g., trading off quality for complexity), it is crucial to understand the relationship between model architecture, theoretical complexity, and traditional metrics.\nTo investigate this, this contribution provides a complexity analysis of a publicly available AI codec (DAC [3]), where different \"dummy\" variants of the model were created by scaling the model's internal latent dimensions (DAC.encoder_dim and DAC.decoder_dim). The analysis maps the relationship between model parameters, theoretical FLOPs, and traditional WMOPS, providing data to help inform the setting of a reasonable complexity constraint framework.","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-03-02 12:42:27","uploaded":"2026-02-03 13:43:09","revisionof":"S4-251793","revisedto":"S4-260444","release":"Rel-20","crspec":26.94,"crspecversion":"0.4.0","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260158.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260159","title":"[FS_ULBC] On codec bitrate and capacity discussion for ULBC","source":"vivo, Samsung, Spreadtrum, MediaTek Inc.","contact":"Wang Dong","contact-id":107237,"tdoctype":"pCR","for":"Agreement","abstract":"TBS and codec bitrate for evaluation is still noted with \u2018companies reported\u2019, this contribution will try to provide some analysis from following aspects:\n-\tProvide Multiplexed UE number analysis\n-\tConfirm the TBS\/Codec bitrate values","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-03-02 12:44:35","uploaded":"2026-02-03 13:43:09","revisionof":"S4-251792","revisedto":"S4-260442","release":"Rel-20","crspec":26.94,"crspecversion":"0.4.0","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260159.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260165","title":"On ULBC complexity and RTF analysis","source":"Dolby Laboratories Inc., Novamint, Nokia","contact":"Rishabh Tyagi","contact-id":109230,"tdoctype":"pCR","for":"","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-03-02 14:23:49","uploaded":"2026-02-03 14:29:39","revisionof":"","revisedto":"S4-260446","release":"Rel-20","crspec":26.94,"crspecversion":"0.5.1","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260165.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260173","title":"[FS_ULBC] Discussion on Methodology for Delay & Error Trace Generation","source":"vivo Mobile Communication Co.,","contact":"Huan-yu Su","contact-id":113359,"tdoctype":"discussion","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"noted","reservation_date":"2026-03-02 15:22:00","uploaded":"2026-02-03 19:11:20","revisionof":"","revisedto":"","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260173.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260175","title":"[FS_ULBC] Proposed ULBC design constraints living document","source":"vivo Mobile Communication Co.,","contact":"Huan-yu Su","contact-id":113359,"tdoctype":"discussion","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-03-02 15:36:20","uploaded":"2026-02-03 19:11:20","revisionof":"","revisedto":"S4-260299","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260175.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260209","title":"[FS_ULBC] Alignment Analysis on Complexity of DAC model","source":"vivo Mobile Communication Co.,","contact":"Wang Dong","contact-id":107237,"tdoctype":"pCR","for":"Agreement","abstract":"In this meeting, several companies have presented complexity analyses for AI-based codecs suitable for ULBC. notably S4-260165 [1] (Dolby et al.) and S4-260155 [2] (vivo et al.).\nWhile both contributions agree on the general feasibility of AI codecs on modern smartphones, there appeared to be a discrepancy when comparing \"Model Size\" (parameter count) to Real-Time Factor (RTF). Specifically, for a model of a similar parameter count (e.g., ~3M parameters), the reported complexity and RTF varied significantly between the architectures tested in [1] and [2]. For instance, the [1] ~3M parameter model (32 kHz) requires 0.79 GMACS, whereas the equivalent [2] ~3M parameter model (32 kHz) requires approximately 1.41 GMACS (derived from 2821 MFlops\/s). In fact, the [1] model's complexity (0.79 GMACS) aligns more closely with the [2] model operating at 16 kHz (~0.70 GMACS), despite the difference in sampling rate.\nThis contribution provides a detailed analysis of this discrepancy. It demonstrates that \"Model Size\" is an insufficient metric for constraining complexity across different neural architectures, or even within the same architecture (e.g., DAC). Instead, we show that GMACS (Giga Multiply-Accumulate Operations per Second) provides a robust, linear correlation with RTF across different architectures, sampling rates, and frame rates.","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-03-02 17:43:14","uploaded":"2026-02-03 17:47:01","revisionof":"","revisedto":"S4-260443","release":"Rel-20","crspec":26.94,"crspecversion":"0.5.1","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260209.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260214","title":"[FS_ULBC] Feasible bitrates for the NTN-TDL-C channel model with 10-degree elevation angle","source":"Qualcomm Incorporated, Xiaomi","contact":"Ma Liangping","contact-id":91234,"tdoctype":"pCR","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-03-02 18:20:37","uploaded":"2026-02-03 20:49:44","revisionof":"S4aA260003","revisedto":"S4-260311","release":"Rel-20","crspec":26.94,"crspecversion":"0.4.0","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260214.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260215","title":"[FS_ULBC] On the scheduling timing uncertainty","source":"Qualcomm Incorporated, Ericsson LM","contact":"Ma Liangping","contact-id":91234,"tdoctype":"other","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-03-02 18:26:53","uploaded":"2026-02-03 20:49:44","revisionof":"S4aA260007","revisedto":"S4-260310","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260215.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260216","title":"[FS_ULBC] On transmission delay for voice over NB-IoT NTN","source":"Qualcomm Incorporated","contact":"Ma Liangping","contact-id":91234,"tdoctype":"pCR","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-03-02 18:33:28","uploaded":"2026-02-03 20:49:44","revisionof":"","revisedto":"S4-260316","release":"Rel-20","crspec":26.94,"crspecversion":"0.5.1","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260216.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260217","title":"[FS_ULBC] Support for Dual-Tone Multi-Frequency for IMS voice over NB-IoT NTN","source":"Qualcomm Incorporated","contact":"Ma Liangping","contact-id":91234,"tdoctype":"discussion","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"noted","reservation_date":"2026-03-02 18:47:50","uploaded":"2026-02-03 20:49:44","revisionof":"","revisedto":"","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260217.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260220","title":"Proposed design constraints for noise suppression, DTX, and non-speech inputs","source":"Nokia","contact":"Lasse Laaksonen","contact-id":45550,"tdoctype":"discussion","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"noted","reservation_date":"2026-03-02 19:19:04","uploaded":"2026-02-03 20:42:58","revisionof":"","revisedto":"","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260220.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260223","title":"UE Antenna Gain in link-budget evaluations","source":"Ericsson LM","contact":"Tomas Jansson Toftg\u00e5rd","contact-id":72490,"tdoctype":"discussion","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"noted","reservation_date":"2026-03-02 20:06:05","uploaded":"2026-02-03 20:24:30","revisionof":"","revisedto":"","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260223.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260233","title":"On reference code and model format","source":"Fraunhofer IIS, Apple Inc.","contact":"Markus Schnell","contact-id":72605,"tdoctype":"pCR","for":"Discussion","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"agreed","reservation_date":"2026-03-02 20:49:10","uploaded":"2026-02-03 22:37:07","revisionof":"","revisedto":"","release":"Rel-20","crspec":26.94,"crspecversion":"0.5.1","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260233.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260235","title":"On the use of objective metrics in ULBC standardization","source":"Orange","contact":"Stephane Ragot","contact-id":32055,"tdoctype":"pCR","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-03-02 20:49:26","uploaded":"2026-02-03 22:43:44","revisionof":"","revisedto":"S4-260279","release":"Rel-20","crspec":26.94,"crspecversion":"0.5.1","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260235.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260241","title":"On complexity estimation of ULBC","source":"Fraunhofer IIS","contact":"Markus Schnell","contact-id":72605,"tdoctype":"pCR","for":"Discussion","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-03-02 21:00:16","uploaded":"2026-02-03 22:37:07","revisionof":"","revisedto":"S4-260432","release":"Rel-20","crspec":26.94,"crspecversion":"0.5.1","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260241.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260255","title":"[FS_ULBC] ULBC Re-Focus Proposal","source":"Dolby Laboratories Inc., Nokia, Novamint","contact":"Stefan Bruhn","contact-id":109223,"tdoctype":"discussion","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-03-02 21:32:20","uploaded":"2026-02-03 22:37:40","revisionof":"","revisedto":"S4-260292","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260255.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260256","title":"[FS_ULBC] Feasible TBS values and packet loss traces for 80ms bundling period for ULBC over NB-IoT NTN GEO channel","source":"Qualcomm Incorporated","contact":"Ma Liangping","contact-id":91234,"tdoctype":"pCR","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-03-02 21:36:02","uploaded":"2026-02-03 22:32:09","revisionof":"S4-251739","revisedto":"S4-260313","release":"Rel-20","crspec":26.94,"crspecversion":"0.2.0","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260256.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260271","title":"[FS_ULBC] ULBC Performance Requirements","source":"Apple Inc.","contact":"Waqar Zia","contact-id":102910,"tdoctype":"pCR","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-03-02 21:54:57","uploaded":"2026-02-03 22:34:06","revisionof":"S4aA250135","revisedto":"S4-260419","release":"Rel-20","crspec":26.94,"crspecversion":"0.5.1","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260271.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260272","title":"[FS_ULBC] ULBC Codec Testing in Background Noise","source":"Apple Inc.","contact":"Waqar Zia","contact-id":102910,"tdoctype":"pCR","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-03-02 21:54:57","uploaded":"2026-02-03 22:35:37","revisionof":"S4-251786","revisedto":"S4-260420","release":"Rel-20","crspec":26.94,"crspecversion":"0.5.1","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260272.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260275","title":"[FS_ULBC] On device capability diversity","source":"Dolby Laboratories Inc., Nokia, Novamint","contact":"Stefan Bruhn","contact-id":109223,"tdoctype":"discussion","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-03-02 21:59:39","uploaded":"2026-02-03 22:37:40","revisionof":"S4aA260006","revisedto":"S4-260447","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260275.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260279","title":"On the use of objective metrics in ULBC standardization","source":"Orange, Dolby Laboratories Inc.","contact":"Stephane Ragot","contact-id":32055,"tdoctype":"pCR","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-03-02 22:47:28","uploaded":"2026-02-03 22:54:57","revisionof":"S4-260235","revisedto":"S4-260305","release":"Rel-20","crspec":26.94,"crspecversion":"0.5.1","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260279.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260290","title":"[FS_ULBC] Analysis and recommended handling of the reply liaisons from other working groups to SA4 on ULBC","source":"Qualcomm Incorporated","contact":"Ma Liangping","contact-id":91234,"tdoctype":"discussion","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-08-02 20:37:45","uploaded":"2026-02-08 20:48:51","revisionof":"S4aA250139","revisedto":"S4-260300","release":"Rel-20","crspec":"","crspecversion":"","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260290.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260292","title":"[FS_ULBC] ULBC Re-Focus Proposal","source":"Dolby Laboratories Inc., Nokia, Novamint, Vivo","contact":"Stefan Bruhn","contact-id":109223,"tdoctype":"discussion","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"noted","reservation_date":"2026-09-02 03:14:07","uploaded":"2026-02-09 03:17:44","revisionof":"S4-260255","revisedto":"","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260292.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260299","title":"[FS_ULBC] Proposed ULBC design constraints living document v0.0.2","source":"vivo Mobile Communication Co., Orange","contact":"Huan-yu Su","contact-id":113359,"tdoctype":"discussion","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"agreed","reservation_date":"2026-09-02 14:13:38","uploaded":"2026-02-09 14:29:31","revisionof":"S4-260175","revisedto":"","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260299.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260300","title":"[FS_ULBC] Analysis and recommended handling of the reply liaisons from other working groups to SA4 on ULBC","source":"Qualcomm Incorporated","contact":"Ma Liangping","contact-id":91234,"tdoctype":"discussion","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"noted","reservation_date":"2026-09-02 14:32:17","uploaded":null,"revisionof":"S4-260290","revisedto":"","release":"Rel-20","crspec":"","crspecversion":"","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260305","title":"On the use of objective metrics in ULBC standardization","source":"Orange, Dolby Laboratories Inc.","contact":"Stephane Ragot","contact-id":32055,"tdoctype":"pCR","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-10-02 05:37:48","uploaded":"2026-02-13 03:01:09","revisionof":"S4-260279","revisedto":"S4-260417","release":"Rel-20","crspec":26.94,"crspecversion":"0.5.1","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260305.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260310","title":"[FS_ULBC] On the scheduling timing uncertainty","source":"Qualcomm Incorporated, Ericsson LM","contact":"Ma Liangping","contact-id":91234,"tdoctype":"other","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"agreed","reservation_date":"2026-10-02 12:12:58","uploaded":"2026-02-13 03:01:09","revisionof":"S4-260215","revisedto":"","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260310.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260311","title":"[FS_ULBC] Feasible bitrates for the NTN-TDL-C channel model with 10-degree elevation angle","source":"Qualcomm Incorporated, Xiaomi","contact":"Ma Liangping","contact-id":91234,"tdoctype":"pCR","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"noted","reservation_date":"2026-10-02 12:38:46","uploaded":"2026-02-12 06:37:39","revisionof":"S4-260214","revisedto":"","release":"Rel-20","crspec":26.94,"crspecversion":"0.4.0","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260311.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260313","title":"[FS_ULBC] Feasible TBS values and packet loss traces for 80ms bundling period for ULBC over NB-IoT NTN GEO channel","source":"Qualcomm Incorporated","contact":"Ma Liangping","contact-id":91234,"tdoctype":"pCR","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"noted","reservation_date":"2026-10-02 13:07:44","uploaded":"2026-02-12 07:47:59","revisionof":"S4-260256","revisedto":"","release":"Rel-20","crspec":26.94,"crspecversion":"0.2.0","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260313.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260316","title":"[FS_ULBC] On transmission delay for voice over NB-IoT NTN","source":"Qualcomm Incorporated","contact":"Ma Liangping","contact-id":91234,"tdoctype":"pCR","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"agreed","reservation_date":"2026-10-02 14:49:40","uploaded":"2026-02-12 06:37:39","revisionof":"S4-260216","revisedto":"","release":"Rel-20","crspec":26.94,"crspecversion":"0.5.1","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260316.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260325","title":"Reply LS on issues related to support of IMS voice over NB-IoT NTN connected to EPC","source":"Qualcomm Incorporated","contact":"Ma Liangping","contact-id":91234,"tdoctype":"LS out","for":"Approval","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"approved","reservation_date":"2026-11-02 04:31:07","uploaded":"2026-02-12 06:57:54","revisionof":"","revisedto":"","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"SA2","Cc":"RAN1, RAN2, CT1","lsoriginalls":"S2-2507636","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260325.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260326","title":"Reply LS on on the RAN simulation assumptions, bundling period and SPS for ULBC","source":"Qualcomm Incorporated","contact":"Ma Liangping","contact-id":91234,"tdoctype":"LS out","for":"Approval","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-11-02 04:33:47","uploaded":"2026-02-12 06:57:54","revisionof":"","revisedto":"S4-260462","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"RAN2","Cc":"RAN1, SA2, CT1","lsoriginalls":"R2-2507790","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260326.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260354","title":"[FS_ULBC] On target platforms for ULBC","source":"Huawei Technologies Co., Ltd.","contact":"Lei Li","contact-id":114118,"tdoctype":"pCR","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"agreed","reservation_date":"2026-11-02 10:03:03","uploaded":"2026-02-12 06:52:14","revisionof":"S4-260141","revisedto":"","release":"Rel-20","crspec":26.94,"crspecversion":"0.5.0","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260354.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260364","title":"[FS_ULBC] On vehicle emergency call scenario for ULBC","source":"Huawei Technologies Co., Ltd.","contact":"Lei Li","contact-id":114118,"tdoctype":"pCR","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"agreed","reservation_date":"2026-11-02 12:11:59","uploaded":"2026-02-12 07:15:58","revisionof":"S4-260137","revisedto":"","release":"Rel-20","crspec":26.94,"crspecversion":"0.5.0","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260364.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260370","title":"[FS_ULBC] On Assumptions and Open Issues for NB-IoT GEO Simulation","source":"China Mobile Com. Corporation","contact":"Jiayi Xu","contact-id":89460,"tdoctype":"discussion","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"agreed","reservation_date":"2026-12-02 01:33:03","uploaded":"2026-02-13 03:01:09","revisionof":"S4-260149","revisedto":"","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260370.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260386","title":"[FS_ULBC] Updates of the permanent document based on 3GPP TR 23.700-19","source":"vivo Mobile Communication Co.,","contact":"Wang Dong","contact-id":107237,"tdoctype":"pCR","for":"Agreement","abstract":"SA2 has reached conclusions on Key Issue #1 regarding the support of IMS voice call over NB-IoT via GEO satellite connecting to EPC, as documented in TR 23.700-19. It has been agreed that voice packets shall be transported over the NB-IoT (GEO) user plane (UP) using DRB and S1-U, and that a single PDN connection shall be used for both IMS signaling and IMS voice. Furthermore, the TR specifies that the voice data transport mechanism of IP packets is mandatory (UP\/IP, recommended with RoHC), whereas the mechanism involving the removal and restoration of parts of RTP\/UDP\/IP headers is optional (UP\/non-IP). This contribution updates the FS_ULBC Permanent Document to align the transport path assumptions and solution details with these agreements.","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"agreed","reservation_date":"2026-12-02 04:32:58","uploaded":"2026-02-12 04:38:12","revisionof":"S4-260150","revisedto":"","release":"Rel-20","crspec":26.94,"crspecversion":"0.4.0","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260386.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260415","title":"[FS_ULBC] Analysis on complexity evaluation of ULBC with WMOPS","source":"Bytedance","contact":"June Sun","contact-id":108581,"tdoctype":"discussion","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"agreed","reservation_date":"2026-12-02 06:21:30","uploaded":"2026-02-12 08:37:41","revisionof":"S4-260126","revisedto":"","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260415.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260417","title":"On the use of objective metrics in ULBC standardization","source":"Orange, Dolby Laboratories Inc.","contact":"Stephane Ragot","contact-id":32055,"tdoctype":"pCR","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"agreed","reservation_date":"2026-12-02 06:49:43","uploaded":"2026-02-12 09:31:07","revisionof":"S4-260305","revisedto":"","release":"Rel-20","crspec":26.94,"crspecversion":"0.5.1","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260417.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260419","title":"[FS_ULBC] ULBC Performance Requirements","source":"Apple Inc.","contact":"Atti Venkatraman","contact-id":104272,"tdoctype":"pCR","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"agreed","reservation_date":"2026-12-02 07:08:25","uploaded":"2026-02-12 09:31:07","revisionof":"S4-260271","revisedto":"","release":"Rel-20","crspec":26.94,"crspecversion":"0.5.1","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260419.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260420","title":"[FS_ULBC] ULBC Codec Testing in Background Noise","source":"Apple Inc., Lenovo","contact":"Atti Venkatraman","contact-id":104272,"tdoctype":"pCR","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"agreed","reservation_date":"2026-12-02 07:08:25","uploaded":"2026-02-12 09:31:07","revisionof":"S4-260272","revisedto":"","release":"Rel-20","crspec":26.94,"crspecversion":"0.5.1","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260420.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260424","title":"[FS_ULBC]TR 26.940 V 0.6.0","source":"China Mobile Com. Corporation","contact":"Jiayi Xu","contact-id":89460,"tdoctype":"draft TR","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-12-02 07:11:40","uploaded":"2026-02-13 08:41:08","revisionof":"S4-260144","revisedto":"S4-260474","release":"Rel-20","crspec":26.94,"crspecversion":"0.6.0","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260424.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260432","title":"On complexity estimation of ULBC","source":"Fraunhofer IIS","contact":"Markus Schnell","contact-id":72605,"tdoctype":"pCR","for":"Discussion","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"agreed","reservation_date":"2026-12-02 07:37:18","uploaded":"2026-02-12 08:53:53","revisionof":"S4-260241","revisedto":"","release":"Rel-20","crspec":26.94,"crspecversion":"0.5.1","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260432.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260434","title":"[FS_ULBC] Permanent Document v0.6.0","source":"China Mobile Com. Corporation","contact":"Jiayi Xu","contact-id":89460,"tdoctype":"discussion","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"agreed","reservation_date":"2026-12-02 07:40:29","uploaded":"2026-02-13 08:41:08","revisionof":"S4-260146","revisedto":"","release":"Rel-20","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260434.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260435","title":"[FS_ULBC] WorkPlan of FS_ULBC v0.6","source":"China Mobile Com. Corporation","contact":"Jiayi Xu","contact-id":89460,"tdoctype":"Work Plan","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-12-02 07:41:45","uploaded":"2026-02-13 04:51:06","revisionof":"S4-260148","revisedto":"S4-260475","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260435.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260442","title":"[FS_ULBC] On codec bitrate and capacity discussion for ULBC","source":"vivo, Samsung, Spreadtrum, MediaTek Inc.","contact":"Wang Dong","contact-id":107237,"tdoctype":"pCR","for":"Agreement","abstract":"TBS and codec bitrate for evaluation is still noted with \u2018companies reported\u2019, this contribution will try to provide some analysis from following aspects:\n-\tProvide Multiplexed UE number analysis\n-\tConfirm the TBS\/Codec bitrate values","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"noted","reservation_date":"2026-12-02 08:39:32","uploaded":"2026-02-12 13:53:11","revisionof":"S4-260159","revisedto":"","release":"Rel-20","crspec":26.94,"crspecversion":"0.4.0","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260442.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260443","title":"[FS_ULBC] Alignment Analysis on Complexity of DAC model","source":"vivo Mobile Communication Co.,","contact":"Wang Dong","contact-id":107237,"tdoctype":"pCR","for":"Agreement","abstract":"In this meeting, several companies have presented complexity analyses for AI-based codecs suitable for ULBC. notably S4-260165 [1] (Dolby et al.) and S4-260155 [2] (vivo et al.).\nWhile both contributions agree on the general feasibility of AI codecs on modern smartphones, there appeared to be a discrepancy when comparing \"Model Size\" (parameter count) to Real-Time Factor (RTF). Specifically, for a model of a similar parameter count (e.g., ~3M parameters), the reported complexity and RTF varied significantly between the architectures tested in [1] and [2]. For instance, the [1] ~3M parameter model (32 kHz) requires 0.79 GMACS, whereas the equivalent [2] ~3M parameter model (32 kHz) requires approximately 1.41 GMACS (derived from 2821 MFlops\/s). In fact, the [1] model's complexity (0.79 GMACS) aligns more closely with the [2] model operating at 16 kHz (~0.70 GMACS), despite the difference in sampling rate.\nThis contribution provides a detailed analysis of this discrepancy. It demonstrates that \"Model Size\" is an insufficient metric for constraining complexity across different neural architectures, or even within the same architecture (e.g., DAC). Instead, we show that GMACS (Giga Multiply-Accumulate Operations per Second) provides a robust, linear correlation with RTF across different architectures, sampling rates, and frame rates.","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"agreed","reservation_date":"2026-12-02 08:41:23","uploaded":"2026-02-12 13:53:11","revisionof":"S4-260209","revisedto":"","release":"Rel-20","crspec":26.94,"crspecversion":"0.5.1","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260443.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260444","title":"[FS_ULBC] Analysis of AI Codec Complexity Scaling","source":"vivo Mobile Communication Co.,","contact":"Wang Dong","contact-id":107237,"tdoctype":"pCR","for":"Agreement","abstract":"For the standardization of the new ULBC codec [1], establishing a relevant method for evaluating complexity is essential. Previous contributions (e.g., S4aA250264 [2]) have highlighted the potential gap between theoretical complexity metrics (e.g., FLOPs) and practical, on-device performance (e.g., Real-Time Factor). \nA complementary aspect to this discussion is understanding how these complexity metrics scale, not just with frame size, but with the AI model's architecture itself. As AI-based codecs may be proposed with different model sizes or \"operating points\" (e.g., trading off quality for complexity), it is crucial to understand the relationship between model architecture, theoretical complexity, and traditional metrics.\nTo investigate this, this contribution provides a complexity analysis of a publicly available AI codec (DAC [3]), where different \"dummy\" variants of the model were created by scaling the model's internal latent dimensions (DAC.encoder_dim and DAC.decoder_dim). The analysis maps the relationship between model parameters, theoretical FLOPs, and traditional WMOPS, providing data to help inform the setting of a reasonable complexity constraint framework.","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"agreed","reservation_date":"2026-12-02 08:42:04","uploaded":"2026-02-12 13:53:11","revisionof":"S4-260158","revisedto":"","release":"Rel-20","crspec":26.94,"crspecversion":"0.4.0","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260444.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260445","title":"[FS_ULBC] Analysis of AI Codec Real-Time Performance (RTF) and Complexity Scaling","source":"vivo Mobile Communication Co., Xiaomi Technology, Spreadtrum, Bytedance","contact":"Wang Dong","contact-id":107237,"tdoctype":"pCR","for":"Agreement","abstract":"As part of the study on the new Ultra Low Bitrate Speech Codec (ULBC) [1], it is necessary to establish complexity constraints that reflect real-world device capabilities. Previous contributions have analyzed theoretical complexity using static metrics such as FLOPs and WMOPS [2] [5]. However, static metrics often fail to capture system-level bottlenecks, such as memory bandwidth pressure and thermal constraints on mobile System-on-Chips (SoCs).\nThis contribution presents a comprehensive performance analysis of a neural audio codec (based on the Descript Audio Codec architecture) running on a representative mid-range mobile platform. By sweeping across model sizes (1M to 74M parameters) and sample rates (8, 16, 32 kHz), we evaluate the correlation between theoretical complexity and the Real-Time Factor (RTF).","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"agreed","reservation_date":"2026-12-02 08:42:42","uploaded":"2026-02-12 13:52:15","revisionof":"S4-260155","revisedto":"","release":"Rel-20","crspec":26.94,"crspecversion":"0.4.0","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260445.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260446","title":"On ULBC complexity and RTF analysis","source":"Dolby Laboratories Inc., Novamint, Nokia","contact":"Rishabh Tyagi","contact-id":109230,"tdoctype":"pCR","for":"","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"agreed","reservation_date":"2026-12-02 08:43:21","uploaded":"2026-02-12 09:31:07","revisionof":"S4-260165","revisedto":"","release":"Rel-20","crspec":26.94,"crspecversion":"0.5.1","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260446.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260447","title":"[FS_ULBC] On device capability diversity","source":"Dolby Laboratories Inc., Nokia, Novamint","contact":"Stefan Bruhn","contact-id":109223,"tdoctype":"pCR","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"revised","reservation_date":"2026-12-02 08:57:15","uploaded":"2026-02-12 09:31:07","revisionof":"S4-260275","revisedto":"S4-260459","release":"Rel-20","crspec":26.94,"crspecversion":"0.5.1","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260447.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260459","title":"[FS_ULBC] On device capability diversity","source":"vivo Mobile Communication Co.,","contact":"Wang Dong","contact-id":107237,"tdoctype":"pCR","for":"","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"noted","reservation_date":"2026-12-02 12:00:36","uploaded":"2026-02-12 13:53:11","revisionof":"S4-260447","revisedto":"","release":"Rel-20","crspec":26.94,"crspecversion":"0.5.1","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260459.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260462","title":"Reply LS on on the RAN simulation assumptions, bundling period and SPS for ULBC","source":"Qualcomm Incorporated","contact":"Andrijana Brekalo","contact-id":91743,"tdoctype":"LS out","for":"Approval","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"approved","reservation_date":"2026-12-02 13:14:17","uploaded":"2026-02-13 03:01:10","revisionof":"S4-260326","revisedto":"","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"RAN2","Cc":"RAN1, SA2, CT1","lsoriginalls":"R2-2507790","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260462.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260474","title":"[FS_ULBC]TR 26.940 V 0.6.1","source":"China Mobile Com. Corporation","contact":"Andrijana Brekalo","contact-id":91743,"tdoctype":"draft TR","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"agreed","reservation_date":"2026-02-13 06:16:15","uploaded":"2026-02-13 10:01:07","revisionof":"S4-260424","revisedto":"","release":"Rel-20","crspec":26.94,"crspecversion":"0.6.1","workitem":[{"winame":"FS_ULBC"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260474.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0},
{"name":"S4-260475","title":"[FS_ULBC] WorkPlan of FS_ULBC v0.6","source":"China Mobile Com. Corporation","contact":"Andrijana Brekalo","contact-id":91743,"tdoctype":"Work Plan","for":"Agreement","abstract":"","secretary_remarks":"","agenda_item_sort_order":20,"ainumber":"7.8","ainame":"FS_ULBC (Study on Ultra Low Bitrate Speech Codec)","tdoc_agenda_sort_order":0,"status":"agreed","reservation_date":"2026-02-13 06:31:16","uploaded":"2026-02-13 10:01:07","revisionof":"S4-260435","revisedto":"","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG4_CODEC\/TSGS4_135_India\/Docs\/S4-260475.zip","group":"S4","meeting":"S4-135","year":2026,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0}]