[{"name":"R5-224325","title":"Discussion paper on TLB mode for SDT","source":"Qualcomm CDMA Technologies","contact":"Yogesh Tugnawat","contact-id":63855,"tdoctype":"discussion","for":"Discussion","abstract":"Small data transmission (SDT) is a procedure allowing data and\/or signaling transmission while remaining in RRC_INACTIVE state (i.e., w\/o transitioning to RRC_CONNECTED state). SDT can be configured and is enabled on a radio bearer (i.e., either DRBs or SRB) basis and is initiated by UE if certain criteria are met. The SDT is initiated with either a transmission over RACH (configured via system information) or over Type 1 CG resources (configured via dedicated signaling in RRCRelease message) by leveraging RRC resume procedure.\nRelease 17 WI on small data transmissions (SDT) includes transmissions using RA-SDT (RRC Based) and CG-SDT where the SDT data is generated in the UE while in RRC_INACTIVE state. Given this is MO Data, test methodology needs to be defined or reused from existing TLB modes\n2.\tDiscussion\nGiven most of the SDT verification will involve NR Layer 2 and  NR layer 3 testing to verify data transfer continuation over RRC and RRM procedures, it may be possible to use TLB Mode B with below settings and call flow explained in below procedural steps \u2013\n\nOption 1:- Reuse of UE test loop mode B\nOption 2:- Define a new Test Function and reuse TLB A or B\n3.\tProposal\/Way Forward\n1.\tComparison: Option#1 involves minimal changes and might be best option to test SDT data in RRC Inactive; Option#2 involves defining a new Test Function.\n\n2.\tProposal: Option#1 is proposed because there are no further changes are needed to TS36.509","secretary_remarks":"","agenda_item_sort_order":944,"ainumber":"6.3.26.6","ainame":"Discussion Papers, Work Plan, TC lists","tdoc_agenda_sort_order":43250,"status":"noted","reservation_date":"2022-08-02 18:33:12","uploaded":"2022-08-04 22:44:47","revisionof":"","revisedto":"","release":"Rel-17","crspec":"","crspecversion":"","workitem":[{"winame":"NR_SmallData_INACTIVE-UEConTest"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/TSG_RAN\/WG5_Test_ex-T1\/TSGR5_96_Electronic\/Docs\/R5-224325.zip","group":"R5","meeting":"R5-96-e","year":2022,"uicc_affected":null,"me_affected":null,"ran_affected":null,"cn_affected":null,"clauses_affected":null,"crsinpack":null,"crsinpacknumber":0}]