[{"name":"S2-2300042","title":"LS from RAN WG1: Draft reply LS on XR and Media Services","source":"RAN WG1","contact":"Xiaohang Chen","contact-id":72578,"tdoctype":"LS in","for":"Action","abstract":"RAN WG1 would like to thank SA WG2 s LS reply (R1-2210826\/S2-2209979) on XR and media services. RAN WG1 discussed the aspects for KI#8 (Power Saving) in the SA WG2 s LS and made the following replies. For KI#8 (Power Saving) PDU Set: A PDU Set is composed of one or more PDUs carrying the payload of one unit of information generated at the application level (e.g., a frame or video slice for XRM Services, as used in TR 26.926 [27]). In some implementations all PDUs in a PDU Set are needed by the application layer to use the corresponding unit of information. In other implementations, the application layer can still recover parts all or of the information unit, when some PDUs are missing. Data Burst: A set of multiple PDUs generated and sent by the application in a short period of time. NOTE: A Data Burst can be composed by one or multiple PDU Sets. RAN WG1 notes the above terms for XR media services are defined from SA WG2 as in TR 23.700-60. RAN WG1 respectfully ask SA WG2 for further clarification on the following Q1-1: how to understand the short period of time in the definition of data burst Q1-2: whether the period of time for data burst can be varied between the data burst in different data burst periods, and if the period of time can be varied, what is the expected range of the period of time for data burst. From RAN WG1 perspective, RAN WG1 notes that data burst start time information and changes in XR traffic parameters could also be beneficial for UE power management. Q2: RAN WG1 would like to ask SA WG2 whether the following information could be provided from the core network Data burst start time information (e.g., the time of 1st arrival packet of Data burst) Notification of changes in XR traffic parameters, e.g., video frame periodicity, jitter statistics. Action: RAN WG1 respectfully ask SA WG2 to provide feedback if any on the above questions.","secretary_remarks":"Responses drafted in S2-2300391, S2-2300496, S2-2301246, S2-2300338. Final response in S2-2301384","agenda_item_sort_order":96,"ainumber":"9.12.2","ainame":"XR (Extended Reality) and media services (XRM)","tdoc_agenda_sort_order":19540,"status":"replied to","reservation_date":"2022-12-19 08:34:56","uploaded":"2022-12-19 12:42:51","revisionof":"","revisedto":"","release":"Rel-18","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"SA WG2","Cc":"RAN WG2, SA WG4","lsoriginalls":"R1-2212994","lsreply":"S2-2301384, S2-2301384","link":"https:\/\/www.3gpp.org\/ftp\/tsg_sa\/WG2_Arch\/TSGS2_154AHE_Electronic_2023-01\/Docs\/S2-2300042.zip","group":"S2","meeting":"S2-154-AH-e","year":2023,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0}]