[{"name":"R5-202127","title":"On NR FR2 Demodulation MUs","source":"Keysight Technologies UK Ltd","contact":"Thorsten Hertel","contact-id":77978,"tdoctype":"discussion","for":"Endorsement","abstract":"This contribution is investigating select MU elements for NR FR2 demodulation test cases and whether the elements apply to demodulation test cases just like they did for UE RF REFSENS test case. \n\nThe following observations and proposals were made in this contribution\nObservation 1: MU elements related to positioning and\/or misalignments (Positioning misalignment, DUT repositioning, Misalignment of positioning system, Positioning and pointing misalignment between the reference antenna and the measurement antenna) for Mode 1 and Mode 2 test cases can be considered negligible if the REFSENS condition was verified without any re-positioning between the verification and the start of the demodulation test case.\nObservation 2: MU element descriptions and uncertainties related to positioning and\/or misalignments (Positioning misalignment, DUT repositioning, Misalignment of positioning system, Positioning and pointing misalignment between the reference antenna and the measurement antenna) for Mode 1 and Mode 2 test cases should be re-used from the REFSENS test case if the UE has been re-positioned between the RESENS verification and the start of the demodulation test case.\nProposal 1: Regarding MU elements related to positioning and\/or misalignments (Positioning misalignment, DUT repositioning, Misalignment of positioning system, Positioning and pointing misalignment between the reference antenna and the measurement antenna) for Mode 1 and Mode 2 test cases: re-use from the REFSENS test case.\nProposal 2: Feedback from the OEMs is requested: allow more time to further study the \u2018Systematic error related to beam peak search\u2019 for Mode 2 demodulation test cases or assume the worst case, i.e., re-use the \u2018Systematic error related to beam peak search\u2019 of 0.5dB from the REFSENS test case.\nProposal 3: Re-use the descriptions and uncertainty values of MU elements for Mode 2 test cases from REFSENS test case: Measure distance uncertainty, Standing wave between the DUT and measurement antenna, Phase curvature, Random uncertainty, Influence of the XPD, Multiple measurement antenna uncertainty, Uncertainty of the Network Analyzer, Uncertainty of the absolute gain of the calibration antenna, Standing wave between reference calibration antenna and measurement antenna, Influence of the calibration antenna feed cable\nProposal 4: Re-evaluate the uncertainty values of MU elements for Mode 2 test cases: Mismatch, gNB uncertainty on absolute level, Amplifier uncertainties, Insertion Loss Variation, and RF leakage (from measurement antenna to the receiver\/transmitter)\nProposal 5: Further evaluate the descriptions and uncertainty values of the following MU elements: Measure distance uncertainty, Mismatch, Standing wave between the DUT and measurement antenna, Phase curvature, Amplifier uncertainties, Influence of the XPD, Insertion Loss Variation, RF leakage (from measurement antenna to the receiver\/transmitter), Multiple measurement antenna uncertainty, Uncertainty of the absolute gain of the calibration antenna, Phase centre offset of calibration antenna, Standing wave between reference calibration antenna and measurement antenna, Influence of the calibration antenna feed cable, Insertion Loss Variation\nProposal 6: OEMs and chipset vendors to confirm that demodulation testing only assumes cross-polarized transmission and no spatial MIMO.\nObservation 3: Depending on the feedback in Proposal 6, the Quality of QZ MU for Mode 1 test cases could be considered zero.","secretary_remarks":"","agenda_item_sort_order":89,"ainumber":"5.3.2.17","ainame":"\tDiscussion Papers \/ Work Plan \/ TC lists","tdoc_agenda_sort_order":21270,"status":"revised","reservation_date":"2020-05-08 00:06:28","uploaded":"2020-05-08 23:08:17","revisionof":"","revisedto":"R5-202846","release":"","crspec":"","crspecversion":"","workitem":[{"winame":"5GS_NR_LTE-UEConTest"}],"crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"http:\/\/www.3gpp.org\/ftp\/TSG_RAN\/WG5_Test_ex-T1\/TSGR5_87_Electronic\/Docs\/R5-202127.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}]