[{"name":"R5-202505","title":"Reply LS from CTIA CCLLC OTA WG to the GCF SG Concerning Antenna Performance Assessments","source":"CTIA Certification Program Working Group","contact":"Ingbert Sigovich","contact-id":28887,"tdoctype":"LS in","for":"Information","abstract":"Introduction\nThe CTIA OTA Working Group would like to provide an update to the Reply LS from\nCTIA CCLLC OTA WG to the GCF SG sent on 19 March, 2020 concerning antenna\nperformance assessments related to the LS dated 4 October, 2019 (Device Under Test\nConfiguration for OTA Antenna Performance Assessments). In this LS, the GCF SG\nhighlights several UE-specific features and\/or functions which have the potential to affect\nthe accuracy and\/or the repeatability of certain OTA measurements.\nThe purpose of this updated Reply LS is to provide the GC SGF with additional\ninformation and clarifications related to the solutions CTIA has developed to address\nmost of these concerns. This information is intended to help foster the development of\nan OTA test environment (and its associated controls) which could become an industry\nstandard.\nThe updates to the recommendations are identified below by [OTA WG 04 May 2020].\nAdditionally, the updated reply LS has been copied to 3GPP RAN4 and 3GPP RAN5 for\ninformation.\nBackground\nAccording to the \u201cBackground\u201d portion of GCF LS document S-19-149, today\u2019s carriers\nare being presented with OTA test results from devices which employ various antenna\nand\/or transmitter control mechanisms, all of which potentially compromise the\naccuracy\/repeatability of certain OTA performance measurements.\nThree of the four mechanisms described in S-19-149 have been addressed by the CTIA\nOTA Test Plan (V 3.8.2) [1] and are summarized in this LS as the basis for a potential\nway-forward for GCF OTA measurements utilizing the 3GPP OTA test methodology.","secretary_remarks":"","agenda_item_sort_order":39,"ainumber":"5.2","ainame":"\tReview incoming LS (fm A.I. 3) & new subject discussion papers","tdoc_agenda_sort_order":250500,"status":"noted","reservation_date":"2020-06-01 16:29:51","uploaded":"2020-06-10 14:56:16","revisionof":"","revisedto":"","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"OTA200307_R4","lsreply":"","link":"http:\/\/www.3gpp.org\/ftp\/TSG_RAN\/WG5_Test_ex-T1\/TSGR5_87_Electronic\/Docs\/R5-202505.zip","group":"R5","meeting":"R5-ah-38102","year":2020,"uicc_affected":null,"me_affected":null,"ran_affected":null,"cn_affected":null,"clauses_affected":null,"crsinpack":null,"crsinpacknumber":0}]