[{"name":"R5-206676","title":"LS on ambiguity in deciding TL,C","source":"TSG WG RAN5","contact":"Ingbert Sigovich","contact-id":28887,"tdoctype":"LS out","for":"Approval","abstract":"In TS 38.101-1, the tolerance for configured output power is specified in section 6.2.4 as below:\nThe measured configured maximum output power PUMAX,f,c shall be within the following bounds:\n\tPCMAX_L,f,c  \u2013  MAX{TL,c, T(PCMAX_L,f,c)}  =  PUMAX,f,c  =  PCMAX_H,f,c  +  T(PCMAX_H,f,c).\nwhere the tolerance T(PCMAX,f,c) for applicable values of PCMAX,f,c is specified in Table 6.2.4-1. The tolerance TL,c is the absolute value of the lower tolerance for the applicable operating band as specified in Table 6.2.1-1.\nThe tolerance TL,C refers back directly to table 6.2.1-1, where exists a NOTE 3 further reducing the lower tolerance limit by 1.5dB if RB allocation is at the band edge.\nNOTE 3:\tRefers to the transmission bandwidths confined within FUL_low and FUL_low + 4 MHz or FUL_high \u2013 4 MHz and FUL_high, the maximum output power requirement is relaxed by reducing the lower tolerance limit by 1.5 dB.\nHowever, when calculating PCMAX_L,f,c, the 1.5dB relaxation is already considered in the format of ?TC,c\nPCMAX_L,f,c = MIN {PEMAX,c\u2013 ?TC,c,  (PPowerClass \u2013 ?PPowerClass) \u2013 MAX(MAX(MPRc+?MPRc, A-MPRc)+ ?TIB,c + ?TC,c + ?TRxSRS, P-MPRc) }\nwhere\n\u2026\n\t?TC,c = 1.5dB when NOTE 3 in Table 6.2.1-1 in 38.101-1 applies for a serving cell c, otherwise ?TC,c = 0 dB ;\nRegarding above core requirements, RAN5 has two different understandings:\n1.\tThe source of ?TC,c  is the same as NOTE 3 in table 6.2.1-1, therefore the 1.5dB relaxation shouldn\u2019t be considered again when deciding TL,C.\n2.\tStrictly following above core requirements, the 1.5dB relaxation should be considered twice when deciding ?TC,c  and TL,C.\nThe numeric example of understanding 1 and 2 can been seen below. With understanding 2 the lower limit of Pumax is further relaxed by 1.5dB.\n[..]\nPlease note both understanding have been adopted in TS 38.521-1 for different bands respectively, therefore it\u2019s important that RAN4 provides clear guidance on which understanding is correct.\nActions: To RAN4 group: RAN5 asks RAN4 group to confirm which one of the above understandings is correct.","secretary_remarks":"","agenda_item_sort_order":392,"ainumber":"5.7","ainame":"AOB","tdoc_agenda_sort_order":628200,"status":"approved","reservation_date":"2020-11-22 12:56:12","uploaded":"2020-11-22 13:01:20","revisionof":"","revisedto":"","release":"Rel-15","crspec":"","crspecversion":"","workitem":[{"winame":"5GS_NR_LTE-UEConTest"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"TSG WG RAN4","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/TSG_RAN\/WG5_Test_ex-T1\/TSGR5_89_Electronic\/Docs\/R5-206676.zip","group":"R5","meeting":"R5-89-e","year":2020,"uicc_affected":null,"me_affected":null,"ran_affected":null,"cn_affected":null,"clauses_affected":null,"crsinpack":null,"crsinpacknumber":0}]