5G NR 携帯電話基地局サービスエリアの電波伝搬状況を

1 No. 95 Mar. 2020 (1)5G NR TM 1 5 (5th Genera-tion) 4G(4th Generation)/LTE(Long Term Evolution) 5G New Radio(5G NR) 5G 4G/LTE 4G/LTE 5G NR Non-Standalone(NSA) 4G W-CDMA(Wideband Code Divi-sion Multiple Access) LTE ML8780A/81A ML8780A/81A LTE FDD(Frequency Division Duplex) MU878030B LTE TDD(Time Division Duplex) MU878041B TD-LTE 5G NR GHz GHz MU878070A 5 GNR TDD-sub-6 GHz 28 GHz MU878080A 5 GNR TDD mmWave LTE 5G NR 1 ML8780A/81A 2 5G NR LTE CQI(Channel Quality In-dicator) RS(Reference Signal) RS MHz 20 MHz 5G SS-Block(Synchronization Signal Block) SS(Synchronization Signal) PBCH(Physical Broadcast Channel) SS-Block(Synchronization Signal Block) SS-Block 5G NR SS-Block SS burst set periodicity (5/10/20/40/80/160 ms) SS burst set 1 SS burst SS-Block Half frame ( ms)

2 20 ms SS-Block 2 ML8780A ML8781A 5G NR TM Jun Ono Yoshida Takashi Eizo Hiraiwa Naoya Suzuki Hideyasu sekiguchi 5G 2018 4 GHz GHz 28 GHz 3 5G 5G ML8780A/ML8781A 5G MU878070A 5G NR TDD Sub-6 GHz MU878080A 5G NR TDD mmWave 1 No. 95 Mar. 2020 (2) 5G NR TM 2 SS-Block ( , 20 ms) SS-Block SS burst set SS-Block (SS-Block Index) 0 SS-Block Lmax 1 SS burst set SS-Block 1 SS-Block Lmax 1 SS-Block (Lmax) Lmax Conditions 4 FR1 3 GHz 8 FR1 3 GHz 64 FR2 SS-Block 3 GPP(The 3rd Generation Partnership Project)

3 SS-Block SS-Block MU878070A/MU878080A SS-Block 5G NR SS-Block 5G NR SS-Block SS-Block SS-Block SS-Block PSS(Primary Synchronization Signal) SSS(Secondary Synchronization Signal) PBCH SS-Block 3 3 SS-Block LTE 5G NR 5G 28 GHz Massive MIMO 4 5G NR PCI(Physical Cell ID) Beam Index SS-Block Index SS-Block Index MU878070A/MU878080A 1 PCI SS Block Index KPI(Key Performance Indicator) MU878070A/MU878080A 5G NR SS-RSRP(Synchronization Signal-Reference 2 No.)

4 95 Mar. 2020 (3) 5G NR TM Signal Received Power) rssi (Received Signal Strength Indicator) SS- rsrq (Synchronization Signal-Reference Signal Received Quality) SS-SIR(Synchronization Signal-Signal to Interference Retio) 5G NR KPI 1 SS-RSRP(SS-Reference Signal Received Power) SS-RSRP 1 SSS SSS SS-RSRP 2 SS-SIR(SS-Signal to Interference Ratio) SSS 1 SS-RSRP SIR SIR SSS SSS SINR(Signal to Inter-ference plus Noise Ratio) ML8780A/81A SIR SINR SIR LTE 5G NR SIR 3 rssi (Received Signal Strength Indicator)

5 rssi SS-Block OFDM(Orthogonal Frequency Division Multiplexing) SS-Block rssi rssi 4 SS- rsrq (SS-Reference Signal Received Quality) SIR SSS 1 SS-RSRP rssi (1) SS- rsrq = N SS-RSRP/ rssi (1) N SS-Block 20 rssi rsrq rsrq LTE 1 3 dB 2 6 dB 5G NR Sub-Carrier Spacing(SCS) 30 kHz dB SCS 120 kHz dB LTE 5G NR 2 2 LTE/5G NR LTE 5G NR Physical Cell ID (PCI) PCI = 0 503 Physical Cell ID (PCI) PCI = 0 1007 SS-Block Index Beam Index FR1: 0-3 ( 3 GHz) FR1: 0-7 ( 3 GHz) FR2: 0-63 Reference Signal (RS) Secondary Synchroniza-tion Signal(SSS) RSRP [dBm] 15 kHz SS-RSRP [dBm] FR1: 15 kHz, 30 kHz FR2: 120 kHz, 240 kHz rssi , Io [dBm] rssi [dBm] rsrq [dB] SS- rsrq [dB] SIR [dB] SS-SIR [dB] 3 5G NR 5G NR LTE SIR (2) SSS OFDM LTE RSRP = Iave2 + Qave2 = {(1/M) Im}2 + {(1/M) Qm}2 (2) Iot = (1/M) {(Im Iave)2 + (Qm Qave)2} (3) SIR = RSRP/Iot (4) (Iave, Qave) SSS (Im, Qm) SSS M SSS 5G NR LTE 3 No.

6 95 Mar. 2020 (4) 5G NR TM 5G NR LTE 5G NR SSS LTE RS SSS SIR 5 4 16 32 5G NR SS-SIR 5 SIR 4 MU878070A/MU878080A SS-Block Auto SS-Block NR SS Block SS-Block SS-Block Auto Auto MU878070A/MU878080A SS-Block Auto Auto 6(a) Auto 6(b) Auto 6(c) Auto 7 SS-Block SS-Block Auto Auto SS-Block SS-Block Auto SS-Block Auto 6 SS-Block Auto 7 SS-Block Auto (a) (b) (c) 4 No.

7 95 Mar. 2020 (5) 5G NR TM MU878070A/MU878080A Auto NR SS-Block 64 Beam 5G NR MU878080A PCI 64 64 8 5G NR 64 Beam 8 5G NR 64 Beam Map Tool GPS(Global Positioning System) 5G NR GPS GPS Map Tool Map Tool 9 Map Tool Map Tool 9 Map Tool 5 MU878070A 5 GNR TDD-sub-6 GHz MU878080A 5 GNR TDD mmWave 5 1 3 GPP TS (2018-09) 2 3 GPP TS (2018-09) 3 3 GPP TS (2018-09) 4 3 GPP TS (2018-09) 5 3 GPP TS (2018-09) 6 3 GPP TS (2018-09) 7 ML8780A/81A W-CDMA/LTE 89 ( ) 8 ML8720A W-CDMA 80 ( ) 5 No.

8 95 Mar. 2020 (6) 5G NR TM IoT 6