Simultaneous PSFCH Transmission Requirements: RAN4#94bis-e Meeting Summary
Discover the latest developments in MPR/A-MPR requirements for simultaneous PSFCH transmission discussed at the RAN4#94bis-e Electronic Meeting in April 2020. Get insights from Huawei, Qualcomm, and LGE simulations on PSFCH transmission, MPR/AMPR values, and more. Delve into the proposed work item focusing on deriving requirements considering non-contiguous RB allocation. Stay informed on the alignment of simulation assumptions and parameters for PSFCH transmission in this detailed meeting agenda.
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3GPP TSG-RAN WG4 Meeting #94bis-e Electronic Meeting, 20thApril 30thApril, 2020 R4-2005224 WF on MPR/A-MPR requirements for simultaneous PSFCH transmission Agenda item: 6.4.1 Source: Huawei, HiSilicon
Background In RAN4#94e, in order to be aligned with each other, the simulation assumption and parameters for PSFCH are proposed in a WF [1]. In RAN4#94bis-e, LGE, Qualcomm and Huawei provided MPR simulations results for simultaneous PSFCH transmission. [2~3] Qualcomm and Huawei provided AMPR simulations results for simultaneous PSFCH transmission. [4~6] This WF is proposed to derive the MPR/AMPR requirements for simultaneous PSFCH transmission, with 1 PSFCH transmission per RB, considering the worst MPR/AMPR values, due to non-contiguous RB allocation. RAN4 shall be more careful about this issue which LTE V2X never touch. (Qualcomm: we don t understand what this sentence means and it needs to be reworded. It says RAN4 needs to do something. )
Reference [1] R4-2002758 WF on MPR/A-MPR simulation assumptions and parameters for simultaneous PSFCH transmission, Huawei [2] R4-2003434 MPR for PSFCH transmission all channel bandwidths TP, Qualcomm Incorporated [3] R4-2004415 MPR simulations results for multi-UE PSFCH transmission, LG Electronics [4] R4-2004201 MPR\AMPR simulation results and discussion for PC3 PSFCH NR V2X in band n47, Huawei, HiSilicon [5] R4-2003437 A-MPR for 40MHz V2X PSFCH transmission TP, Qualcomm Incorporated [6] R4-2003439 A-MPR for 10MHz V2X PSFCH transmission TP, Qualcomm Incorporated [7] R4-2003550 On Simultaneous Transmission of PSFCH, Futurewei
WF on MPR for PSFCH For PSFCH with single RB transmission, the MPR is specified as MPR_PSFCH = [3.5] (0.5dB Margin is needed) For simultaneous PSFCH transmission with contiguous and non-contiguous RB allocation, the MPR is specified as follow: MPR_PSFCH = 7.5 ; 0 < NGap / NRB < 0.55 = 12 ; 0.55 NGap / NRB 1 Where NGap is the gap (in units of RBs) between RBstart and RBend for simultaneous PSFCH transmission with contiguous and non- contiguous RB allocation. (NGap = RBend - RBstart)
WF on ESTI NS_33 AMPR for PSFCH Table TBD1: PSFCH A-MPR for NS_33 or NS_NEW and 15kHz SCS Number of transmissions N =1 N =2 N =3 N =4 N >= 5 N =1 2 N 3 N >= 4 Carrier frequency(MHz) MA_PSFCH_MIN MA_PSFCH_MAX A-MPRStep 58601 58601 58601 58601 58601 19 18 22 21 19 5 6 5 19 18 22 21 19 5 10 8 0 0 0 0 0 0.8 0.5 0.375 58602, 5870, 5880, 5890, 5900, 5910, 5920 58602, 5870, 5880, 5890, 5900, 5910, 5920 58602, 5870, 5880, 5890, 5900, 5910, 5920 NOTE 1: For NS_33 only NOTE 2: For NS_NEW only Table TBD2: PSFCH A-MPR for NS_33 or NS_NEW and 30kHz SCS Number of transmissions N =1 N =2 N =3 N =4 N >= 5 N =1 2 N 3 N >= 4 Carrier frequency(MHz) MA_PSFCH_MIN MA_PSFCH_MAX A-MPRStep 0 0 0 0 0 0.8 0.375 0.2 58601 58601 58601 58601 58601 19 17 22 20 19 5 4 4.5 19 17 22 20 19 5 8 6 58602, 5870, 5880, 5890, 5900, 5910, 5920 58602, 5870, 5880, 5890, 5900, 5910, 5920 58602, 5870, 5880, 5890, 5900, 5910, 5920 NOTE 1: For NS_33 only NOTE 2: For NS_NEW only
WF on FCC NS_yy AMPR for PSFCH PSFCH A-MPR (dB) Channel Bandwidth, MHz Carrier Frequency (MHz) 40 MHz 5885 [23.5]
WF on ESTI NS_NEW AMPR for PSFCH Channel Bandwidth, MHz PSFCH A-MPRbase(dB) Carrier Frequency (MHz) 0 NGap/ NRB< TBD TBD NGap/ NRB< TBD TBD NGap/ NRB TBD 10 MHz TBD TBD TBD TBD Note 1: NGap is the gap (in units of RBs) between RBstart and RBend for simultaneous PSFCH transmission with contiguous and non-contiguous RB allocation. (NGap = RBend - RBstart) Note 2: Applicable for 1 PSFCH in each active RB.
