top 5 coexistence considerations for successful...

2
5G New Radio Coexistence in Wireless Communications Ensure your 5G New Radio (NR) designs will operate in adjacent bands or within the same spectrum as other wireless communications. WIRELESS COMMUNICATIONS OPERATING BANDS Wireless Communications Spectrum 5G NEW RADIO REL-15 FREQUENCY RANGES 5G NR Frequency Range 1 (FR1) Overlaps with 4G LTE frequencies Frequency Range 2 (FR2) Extends operating bands into mmWave frequencies 450 MHz to 6 GHz 24.25 to 52.6 GHz CBRS (Citizen Broadband Radio Service) 3550 - 3700 MHz Low Bands < 1 GHz (Freq Uplink, Freq Downlink unless otherwise noted) Mid Bands 1 GHz - 6 GHz (Freq Uplink, Freq Downlink unless otherwise noted) High Bands > w24 GHz (Freq Uplink, Freq Downlink unless otherwise noted) 5G NR 26500 - 29500 MHz, 26500 - 29500 MHz 24250 - 27500 MHz, 24250 - 27500 MHz 37000 - 40000 MHz, 37000 - 40000 MHz 27500 - 28350 MHz, 27500 - 28350 MHz 1920 - 1980 MHz, 2110 - 2170 MHz 1850 - 1910 MHz, 1930 - 1990 MHz 1710 - 1785 MHz, 1805 - 1880 MHz 2500 - 2570 MHz, 2620 - 2690 MHz 1850 - 1915 MHz, 1930 - 1995 MHz 2010 - 2025 MHz, 2010 - 2025 MHz 2570 - 2620 MHz, 2570 - 2620 MHz 1880 - 1920 MHz, 1880 - 1920 MHz 2300 - 2400 MHz, 2300 - 2400 MHz 2496 - 2690 MHz, 2496 - 2690 MHz 1432 - 1517 MHz, 1432 - 1517 MHz 1427 - 1432 MHz, 1427 - 1437 MHz 824 - 849 MHz, 869 - 894 MHz 880 - 915 MHz, 925 - 960 MHz 699 - 716 MHz, 729 - 746 MHz 832 - 862 MHz, 791 - 821 MHz 703 - 748 MHz, 758 - 803 MHz 663 - 698 MHz, 617 - 652 MHz 880 - 915 MHz (SUL) 832 - 862 MHz (SUL) 703 - 748 MHz (SUL) n5: n8: n12: n20: n28: n71: n81: n82: n83: n1: n2: n3: n7: n25: n34: n38: n39: n40: n41: n50: n51: n66: n70: n74: n75: n76: n77: n78: n79: n80: n84: n86: 1710 - 1780 MHz, 2110 - 2200 MHz 1695 - 1710 MHz, 1995 - 2020 MHz 1427 - 1470 MHz, 1475 - 1518 MHz 1432 - 1517 MHz (DL) 1427 - 1432 MHz (DL) 3300 - 4200 MHz, 3300 - 4200 MHz 3300 - 3800 MHz, 3300 - 3800 MHz 4400 - 5000 MHz, 4400 - 5000 MHz 1710 - 1785 MHz (SUL) 1920 - 1980 MHz (SUL) 1710 - 1780 MHz (SUL) n257: n258: n260: n261: E-UTRA LTE / LTE-ADVANCED 1920 - 1980 MHz, 2110 - 2170 MHz 1850 - 1910 MHz, 1930 - 1990 MHz 1710 - 1785 MHz, 1805 - 1880 MHz 1710 - 1755 MHz, 2110 - 2155 MHz 2500 - 2570 MHz, 2620 - 2690 MHz 1749.9 - 1784.9 MHz, 1844.9 - 1879.9 MHz 1710 MHz - 1770 MHz, 2110 - 2170 MHz 1427.9 - 1447.9 MHz, 1475.9 - 1495.9 MHz 1447.9 - 1462.9 MHz, 1495.9 - 1510.9 MHz 3410 - 3490 MHz, 3510 - 3590 MHz 2000 - 2020 MHz, 2180 - 2200 MHz 1626.5 - 1660.5 MHz, 1525 - 1559 MHz 1850 - 1915 MHz, 1930 MHz - 1995 MHz 2305 - 2315 MHz, 2350 - 2360 MHz N/A, 1452 - 1496 MHz 1900 - 1920 MHz, 1900 - 1920 MHz 2010 - 2025 MHz, 2010 - 2025 MHz 1850 - 1910 MHz, 1850 - 1910 MHz 1930 - 1990 MHz, 1930 - 1990 MHz 1910 - 1930 MHz, 1910 - 1930 MHz 2570 - 2620 MHz, 2570 - 2620 MHz 824 - 849 MHz, 869 - 894 MHz 830 - 840 MHz, 875 - 885 MHz 880 - 915 MHz, 925 - 960 MHz 699 - 716 MHz, 729 - 746 MHz 777 - 787 MHz, 746 - 756 MHz 788 - 798 MHz, 758 - 768 MHz Reserved, Reserved Reserved, Reserved 704 - 716 MHz, 734 - 746 MHz 815 - 830 MHz, 860 - 875 MHz 830 - 845 MHz, 875 - 890 MHz 832 - 862 MHz, 791 - 821 MHz 814 - 849 MHz, 859 - 894 MHz 807 - 824 MHz, 852 - 869 MHz 703 - 748 MHz, 758 - 803 MHz N/A, 717 - 728 MHz 452.5 - 457.5 MHz, 462.5 - 467.5 MHz 703 - 803 MHz, 703 - 803 MHz 738 MHz - 758 MHz (DL) 698 - 728 MHz, 753 - 783 MHz 663 - 698 MHz, 617 - 652 MHz 451 - 456 MHz, 461 - 466 MHz 450 - 455 MHz, 460 - 465 MHz 698 - 716 MHz, 728 - 746 MHz 5: 6: 8: 12: 13: 14: 15: 16: 17: 18: 19: 20: 26: 27: 28: 29: 31: 44: 67: 68: 71: 72: 73: 85: 1: 2: 3: 4: 7: 9: 10: 11: 21: 22: 23: 24: 25: 30: 32: 33: 34: 35: 36: 37: 38: 39: 40: 41: 42: 43: 45: 46: 47: 48: 49: 50: 51: 52: 65: 66: 69: 70: 74: 75: 76: 1880 - 1920 MHz, 1880 - 1920 MHz 2300 - 2400 MHz, 2300 - 2400 MHz 2496 - 2690 MHz, 2496 - 2690 MHz 3400 - 3600 MHz, 3400 - 3600 MHz 3600 - 3800 MHz, 3600 - 3800 MHz 1447 - 1467 MHz, 1447 - 1467 MHz 5150 - 5925 MHz, 5150 - 5925 MHz 5855 - 5925 MHz, 5855 - 5925 MHz 3550 - 3700 MHz, 3550 - 3700 MHz 3550 - 3700 MHz, 3550 - 3700 MHz 1432 - 1517 MHz, 1432 - 1517 MHz 1427 - 1432 MHz, 1427 - 1432 MHz 3300 - 3400 MHz, 3300 - 3400 MHz 1920 - 2010 MHz, 2110 - 2200 MHz 1710 - 1780 MHz, 2110 - 2200 MHz 2570 - 2620 MHz (DL) 1695 - 1710 MHz, 1995 - 2020 MHz 1427 - 1470 MHz, 1475 - 1518 MHz 1432 - 1517 MHz (DL) 1427 - 1432 MHz (DL) WLAN 802.11 a/b/g/h/j/n/ ac/af/ah/ad/ay 470 - 698 MHz (UHF) 40 - 230 MHz (VHF) < 1 GHz 802.11b/g: 802.11a/h/j: 802.11n: 802.11af: 802.11ah: 2.4 - 2.4835 GHz (ISM) 4.9 - 5 GHz (Japan) 5.03 - 5.091 GHz (Japan) 5.15 - 5.35 GHz (UNII) 5.49 - 5.725 GHz (UNII) 5.735 - 5.835 GHz (ISM, UNII) 2.4 - 2.4835 GHz (ISM) 5.15 - 5.35 GHz (UNII) 5.49 - 5.725 GHz (UNII) 5.735 - 5.825 GHz (ISM, UNII) 802.11ac: 802.11ax: 5.15 - 5.35 GHz (UNII) 5.49 - 5.725 GHz (UNII) 5.735 - 5.825 GHz (ISM, UNII) 2.4 GHz and 5 GHz 57.00 - 71 GHz (US) 57.00 - 66.00 GHz (EU) 57.00 - 64.00 GHz (S Korea) 57.00 - 66.00 GHz (Japan) 59.40 - 62.90 GHz (Australia) 59.00 - 64.00 GHz (China) 801.11ad/ay: Radar & Satellite GPS/Sat phones: 1 - 2 GHz (GPS: 1176.45, 1227.60, 1381.05, 1575.42 MHz, Navigation, GPS, GLONASS L1: 1559 - 1610 MHz) To aircraft: 1545 - 1559 MHz Airport surveillance/weather radar: 2700 - 3000 MHz US Military Radar: 3450 - 3550 MHz ASR: 3100 - 3500 GHz From aircraft: 1646.5 - 1660.5 MHz, 5.925 - 6.425 GHz , 3.7 - 4.2 GHz SATCOM/TV: 4 - 8 GHz Military/WGS SATCOM: 7.9 - 8.4 GHz, 7.25 - 7.75 GHz FSS uplinks: 27.5 - 29.5 GHz FSS downlinks: 37.5 - 40 GHz Operating Bands Repurposed for 5G NR New 5G NR Operating Bands 3GPP Operating Band Specifications: LTE Specification TS 38.101 V 15.3, 5G NR Specification TS 38.101 V 15.3 Terminology Corner 5G NR: Fifth Generation New Radio 5G gNB: Fifth Generation Node B ACLR: Adjacent Channel Leakage Ratio DL: Downlink E-UTRA: Evolved-Universal Terrestrial Radio Access EPC: Evolved Packet Core EVM: Error Vector Magnitude FSS: Fixed-Satellite Services LTE eNB: Long-Term Evolution Evolved Node B NGCN: Next Generation Core Network QoS: Quality of Service RAT: Radio Access Technology RAN: Radio Access Network SEM: Spectrum Emissions Mask SUL: Supplemental Uplink UL: Uplink Top 5 Coexistence Considerations for Successful Operation 5G COEXISTENCE WITH LTE 5G NR needs to coexist with LTE, in adjacent bands and sometimes within the same frequency bands. 5G NR bandwidth parts (BWP) enable LTE and 5G NR signals to share a carrier, introducing new challenges with interference due to closely spaced and overlapping signals. Reduce interference by increasing guard band at higher frequencies, and by using advanced sub-band filtering. Test for coexistence interference using different time and frequency resources. 1 GUARD BAND 5G COEXISTENCE IN UNLICENSED SPECTRUM Techniques such as licensed-assisted access (LAA) enable use of unlicensed spectrum through aggregation of a secondary channel. The evolution of LAA will be addressed in Release-16 through “NR-based access to unlicensed spectrum” resulting in coexistence issues with incumbents like Wi-Fi and other wireless technologies. Test for fair coexistence between 5G NR and legacy systems by evaluating coexistence with NR operation in unlicensed bands and LTE-based LAA, and test how resources are negotiated with incumbent Radio Access Technologies (RATs). 2 5G IN-DEVICE COEXISTENCE (IDC) Multiple radio transceivers in a device can interfere with other receivers in the same device that are operating either in adjacent or sub-harmonic frequencies. Carefully evaluate in-band and out-of-band emissions using wideband spectrum measurements such as adjacent channel leakage ratio (ACLR) and spectrum emissions mask (SEM) to gain insight into the signal’s interference possibilities and ensure sufficient filtering. 3 5G IN-BAND AND OUT-OF-BAND EMISSIONS Performance of a device transmitter at the edge of the band and outside the band can cause interference with other wireless communications systems. In-band and out-of-band emissions must be understood to minimize interference within the band and in adjacent frequency bands. Evaluate unwanted emissions from harmonics, intermodulation spurs, and spectral regrowth to understand how the 5G NR signal will interact with other radio signals. View the signal’s constellation diagram and EVM of the demodulated signal and EVM per subcarrier to predict good or poor coexistence. 4 5G SPECTRUM SHARING WITH SATELLITE AND RADAR SYSTEMS 5G will utilize shared spectrum in sub-6 GHz and in millimeter-wave frequencies where a device must coexist with other wireless communications systems such as satellite and radar. 5G NR FR2 overlaps with fixed-satellite services earth station uplinks at 27.5 to 29.5 GHz and FSS downlinks at 37.5 to 40 GHz. Coexistence will require spectrum sharing techniques such as spectrum shaping, power control, beam forming and spectrum sensing. Use network emulation tools to simulate real-world behavior and validate a device’s ability to detect coexistence traffic and allocate and reallocate spectrum dynamically without impacting quality of service. 5 ANT #1 LTE RF LTE BASEBAND GPS BASEBAND BT/WLAN BASEBAND 5G BASEBAND GPS RF BT/WLAN RF INTERFERENCE FROM LTE INTERFERENCE FROM 5G 5G RF ANT #2 ANT #3 ANT #4 GUARD BAND F 5G NR 4G LTE CARRIER AGGREGATION PRIMARY CARRIER LICENSED ANCHOR SECONDARY CARRIER @ 5 GHz UNLICENSED POWER TX POWER OUT OF BAND (00B) EMISSION BY TRANSMITTER SPURIOUS EMISSION BY TRANSMITTER TX SIGNAL OF 5 GHz Wi-Fi BAND FILTER ANTENNA ISOLATION 5G NR BAND n79 INTERFERENCE WITH 5G NR 24.25 - 27.5 GHz 27.5 - 28.35 GHz 26.5 - 29.5 GHz 37 - 40 GHz 5G mmWave Operating Bands References: http://www.idirect.net/Company/Resource-Center/Satellite-Basics/Frequency-Bands.aspx | http://www.3gpp.org/DynaReport/38-series.htm Product specifications and descriptions in this document subject to change without notice. © Keysight Technologies, 2019 | Printed in the USA, January 11, 2019 | 5992-3354EN keysight.com www.keysight.com/find/5G 5G Solutions for Coexistence Testing SystemVue 5G Wireless Verification Library M9383/84B mmWave VXG Signal Generator 5G Waveform Generation and Analysis Testbed IxLoad-Wireless XAir3 Test Platform E7515B 5G Network Emulation Solutions F8800A PROPSIM 64 Channel Emulator Nemo Outdoor Drive Test ANALYZE 5G MODEM AND DEVICE RF AND PROTOCOL BEHAVIOR UNDER DIFFERENT SHARED SPECTRUM SCENARIOS SIMULATE COEXISTENCE SCENARIOS BEFORE DEVELOPING PROTOTYPES VERIFY IN-BAND AND OUT-OF-BAND EMISSIONS WITH CONFIDENCE VALIDATE WIRELESS NETWORK PERFORMANCE WITH 4G/5G UE EMULATION TEST FOR COEXISTENCE IN THE FIELD

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Page 1: Top 5 Coexistence Considerations for Successful …literature.cdn.keysight.com/litweb/pdf/5992-3354EN.pdfTest for fair coexistence between 5G NR and legacy systems by evaluating coexistence

5G New Radio Coexistence in Wireless CommunicationsEnsure your 5G New Radio (NR) designs will operate in adjacent bands or within the same spectrum as other wireless communications.

WIRELESS COMMUNICATIONS OPERATING BANDS

Wireless Communications Spectrum5G NEW RADIO REL-15 FREQUENCY RANGES

5G NR Frequency Range 1 (FR1)Overlaps with 4G LTE frequencies

Frequency Range 2 (FR2)Extends operating bands into mmWave frequencies

450 MHz to 6 GHz 24.25 to 52.6 GHz

CBRS (CitizenBroadband Radio Service)

3550 - 3700 MHz

Low Bands < 1 GHz(Freq Uplink, Freq Downlink

unless otherwise noted)

Mid Bands 1 GHz - 6 GHz(Freq Uplink, Freq Downlink

unless otherwise noted)

High Bands > w24 GHz(Freq Uplink, Freq Downlink

unless otherwise noted)

5G NR 26500 - 29500 MHz,26500 - 29500 MHz24250 - 27500 MHz,24250 - 27500 MHz37000 - 40000 MHz,37000 - 40000 MHz27500 - 28350 MHz,27500 - 28350 MHz

1920 - 1980 MHz, 2110 - 2170 MHz1850 - 1910 MHz, 1930 - 1990 MHz 1710 - 1785 MHz, 1805 - 1880 MHz 2500 - 2570 MHz, 2620 - 2690 MHz1850 - 1915 MHz, 1930 - 1995 MHz 2010 - 2025 MHz, 2010 - 2025 MHz2570 - 2620 MHz, 2570 - 2620 MHz1880 - 1920 MHz, 1880 - 1920 MHz2300 - 2400 MHz, 2300 - 2400 MHz 2496 - 2690 MHz, 2496 - 2690 MHz 1432 - 1517 MHz, 1432 - 1517 MHz1427 - 1432 MHz, 1427 - 1437 MHz

824 - 849 MHz, 869 - 894 MHz 880 - 915 MHz, 925 - 960 MHz 699 - 716 MHz, 729 - 746 MHz 832 - 862 MHz, 791 - 821 MHz703 - 748 MHz, 758 - 803 MHz663 - 698 MHz, 617 - 652 MHz880 - 915 MHz (SUL)832 - 862 MHz (SUL)703 - 748 MHz (SUL)

n5:n8:

n12:n20:n28:n71:n81:n82:n83:

n1:n2:n3:n7:

n25:n34:n38:n39:n40:n41:n50:n51:

n66:n70:n74:n75:n76:n77:n78:n79:n80:n84:n86:

1710 - 1780 MHz, 2110 - 2200 MHz1695 - 1710 MHz, 1995 - 2020 MHz1427 - 1470 MHz, 1475 - 1518 MHz1432 - 1517 MHz (DL)1427 - 1432 MHz (DL)3300 - 4200 MHz, 3300 - 4200 MHz3300 - 3800 MHz, 3300 - 3800 MHz4400 - 5000 MHz, 4400 - 5000 MHz1710 - 1785 MHz (SUL)1920 - 1980 MHz (SUL)1710 - 1780 MHz (SUL)

n257:

n258:

n260:

n261:

E-UTRA LTE / LTE-ADVANCED

1920 - 1980 MHz, 2110 - 2170 MHz1850 - 1910 MHz, 1930 - 1990 MHz1710 - 1785 MHz, 1805 - 1880 MHz1710 - 1755 MHz, 2110 - 2155 MHz2500 - 2570 MHz, 2620 - 2690 MHz1749.9 - 1784.9 MHz, 1844.9 - 1879.9 MHz1710 MHz - 1770 MHz, 2110 - 2170 MHz1427.9 - 1447.9 MHz, 1475.9 - 1495.9 MHz1447.9 - 1462.9 MHz, 1495.9 - 1510.9 MHz3410 - 3490 MHz, 3510 - 3590 MHz 2000 - 2020 MHz, 2180 - 2200 MHz 1626.5 - 1660.5 MHz, 1525 - 1559 MHz1850 - 1915 MHz, 1930 MHz - 1995 MHz2305 - 2315 MHz, 2350 - 2360 MHzN/A, 1452 - 1496 MHz 1900 - 1920 MHz, 1900 - 1920 MHz 2010 - 2025 MHz, 2010 - 2025 MHz 1850 - 1910 MHz, 1850 - 1910 MHz 1930 - 1990 MHz, 1930 - 1990 MHz 1910 - 1930 MHz, 1910 - 1930 MHz 2570 - 2620 MHz, 2570 - 2620 MHz

824 - 849 MHz, 869 - 894 MHz 830 - 840 MHz, 875 - 885 MHz 880 - 915 MHz, 925 - 960 MHz 699 - 716 MHz, 729 - 746 MHz 777 - 787 MHz, 746 - 756 MHz 788 - 798 MHz, 758 - 768 MHz Reserved, Reserved Reserved, Reserved 704 - 716 MHz, 734 - 746 MHz 815 - 830 MHz, 860 - 875 MHz 830 - 845 MHz, 875 - 890 MHz 832 - 862 MHz, 791 - 821 MHz 814 - 849 MHz, 859 - 894 MHz 807 - 824 MHz, 852 - 869 MHz 703 - 748 MHz, 758 - 803 MHz N/A, 717 - 728 MHz 452.5 - 457.5 MHz, 462.5 - 467.5 MHz 703 - 803 MHz, 703 - 803 MHz 738 MHz - 758 MHz (DL)698 - 728 MHz, 753 - 783 MHz663 - 698 MHz, 617 - 652 MHz451 - 456 MHz, 461 - 466 MHz450 - 455 MHz, 460 - 465 MHz698 - 716 MHz, 728 - 746 MHz

5:6:8:

12:13:14: 15:16:17:18:19:20:26:27:28:29:31:44:67: 68:71:72:73:85:

1:2:3:4:7:9:

10:11:21:22:23:24:25:30:32:33:34:35:36:37:38:

39:40:41:42:43:45:46:47:48:49:50:51:52:65:66:69:70:74:75:76:

1880 - 1920 MHz, 1880 - 1920 MHz 2300 - 2400 MHz, 2300 - 2400 MHz 2496 - 2690 MHz, 2496 - 2690 MHz 3400 - 3600 MHz, 3400 - 3600 MHz 3600 - 3800 MHz, 3600 - 3800 MHz1447 - 1467 MHz, 1447 - 1467 MHz5150 - 5925 MHz, 5150 - 5925 MHz5855 - 5925 MHz, 5855 - 5925 MHz3550 - 3700 MHz, 3550 - 3700 MHz3550 - 3700 MHz, 3550 - 3700 MHz1432 - 1517 MHz, 1432 - 1517 MHz1427 - 1432 MHz, 1427 - 1432 MHz3300 - 3400 MHz, 3300 - 3400 MHz1920 - 2010 MHz, 2110 - 2200 MHz1710 - 1780 MHz, 2110 - 2200 MHz2570 - 2620 MHz (DL)1695 - 1710 MHz, 1995 - 2020 MHz1427 - 1470 MHz, 1475 - 1518 MHz1432 - 1517 MHz (DL)1427 - 1432 MHz (DL)

WLAN 802.11a/b/g/h/j/n/ac/af/ah/ad/ay

470 - 698 MHz (UHF)40 - 230 MHz (VHF) < 1 GHz

802.11b/g:802.11a/h/j:

802.11n:

802.11af:

802.11ah:

2.4 - 2.4835 GHz (ISM) 4.9 - 5 GHz (Japan)5.03 - 5.091 GHz (Japan)5.15 - 5.35 GHz (UNII)5.49 - 5.725 GHz (UNII)5.735 - 5.835 GHz (ISM, UNII) 2.4 - 2.4835 GHz (ISM)5.15 - 5.35 GHz (UNII)5.49 - 5.725 GHz (UNII)5.735 - 5.825 GHz (ISM, UNII)

802.11ac:

802.11ax:

5.15 - 5.35 GHz (UNII)5.49 - 5.725 GHz (UNII)5.735 - 5.825 GHz (ISM, UNII)2.4 GHz and 5 GHz

57.00 - 71 GHz (US)57.00 - 66.00 GHz (EU)57.00 - 64.00 GHz (S Korea)57.00 - 66.00 GHz (Japan)59.40 - 62.90 GHz (Australia)59.00 - 64.00 GHz (China)

801.11ad/ay:

Radar &Satellite

GPS/Sat phones: 1 - 2 GHz (GPS: 1176.45, 1227.60, 1381.05, 1575.42 MHz, Navigation, GPS, GLONASS L1: 1559 - 1610 MHz)To aircraft: 1545 - 1559 MHzAirport surveillance/weather radar: 2700 - 3000 MHz

US Military Radar: 3450 - 3550 MHzASR: 3100 - 3500 GHzFrom aircraft: 1646.5 - 1660.5 MHz,5.925 - 6.425 GHz , 3.7 - 4.2 GHzSATCOM/TV: 4 - 8 GHzMilitary/WGS SATCOM: 7.9 - 8.4 GHz, 7.25 - 7.75 GHz

FSS uplinks: 27.5 - 29.5 GHz FSS downlinks: 37.5 - 40 GHz

Operating Bands Repurposed for 5G NR New 5G NR Operating Bands 3GPP Operating Band Specifications: LTE Specification TS 38.101 V 15.3, 5G NR Specification TS 38.101 V 15.3

Terminology Corner5G NR: Fifth Generation New Radio5G gNB: Fifth Generation Node BACLR: Adjacent Channel Leakage RatioDL: Downlink

E-UTRA: Evolved-Universal Terrestrial Radio Access EPC: Evolved Packet CoreEVM: Error Vector MagnitudeFSS: Fixed-Satellite Services

LTE eNB: Long-Term Evolution Evolved Node BNGCN: Next Generation Core NetworkQoS: Quality of ServiceRAT: Radio Access Technology

RAN: Radio Access NetworkSEM: Spectrum Emissions MaskSUL: Supplemental UplinkUL: Uplink

Top 5 Coexistence Considerations for Successful Operation

5G COEXISTENCE WITH LTE5G NR needs to coexist with LTE, in adjacent bands and sometimes within the same frequency bands. 5G NR bandwidth parts (BWP) enable LTE and 5G NR signals to share a carrier, introducing new challenges with interference due to closely spaced and overlapping signals.

Reduce interference by increasing guard band at higher frequencies, and by using advanced sub-band filtering. Test for coexistence interference using different time and frequency resources.

1

GUARD BAND

F

5G COEXISTENCE IN UNLICENSED SPECTRUMTechniques such as licensed-assisted access (LAA) enable use of unlicensed spectrum through aggregation of a secondary channel. The evolution of LAA will be addressed in Release-16 through “NR-based access to unlicensed spectrum” resulting in coexistence issues with incumbents like Wi-Fi and other wireless technologies.

Test for fair coexistence between 5G NR and legacy systems by evaluating coexistence with NR operation in unlicensed bands and LTE-based LAA, and test how resources are negotiated with incumbent Radio Access Technologies (RATs).

2

5G IN-DEVICE COEXISTENCE (IDC)Multiple radio transceivers in a device can interfere with other receivers in the same device that are operating either in adjacent or sub-harmonic frequencies.

Carefully evaluate in-band and out-of-band emissions using wideband spectrum measurements such as adjacent channel leakage ratio (ACLR) and spectrum emissions mask (SEM) to gain insight into the signal’s interference possibilities and ensure sufficient filtering.

3 5G IN-BAND AND OUT-OF-BAND EMISSIONSPerformance of a device transmitter at the edge of the band and outside the band can cause interference with other wireless communications systems. In-band and out-of-band emissions must be understood to minimize interference within the band and in adjacent frequency bands.

Evaluate unwanted emissions from harmonics, intermodulation spurs, and spectral regrowth to understand how the 5G NR signal will interact with other radio signals. View the signal’s constellation diagram and EVM of the demodulated signal and EVM per subcarrier to predict good or poor coexistence.

4

5G SPECTRUM SHARINGWITH SATELLITE AND RADAR SYSTEMS 5G will utilize shared spectrum in sub-6 GHz and in millimeter-wave frequencies where a device must coexist with other wireless communications systems such as satellite and radar. 5G NR FR2 overlaps with fixed-satellite services earth station uplinks at 27.5 to 29.5 GHz and FSS downlinks at 37.5 to 40 GHz. Coexistence will require spectrum sharing techniques such as spectrum shaping, power control, beam forming and spectrum sensing.

Use network emulation tools to simulate real-world behavior and validate a device’s ability to detect coexistence traffic and allocate and reallocate spectrum dynamically without impacting quality of service.

5

ANT #1

LTE RF

LTEBASEBAND

GPSBASEBAND

BT/WLANBASEBAND

5GBASEBAND

GPS RF BT/WLANRF

INTERFERENCEFROM LTE

INTERFERENCE FROM 5G

5G RF

ANT #2 ANT #3 ANT #4

GUARD BAND

F

5G NR 4G LTE

CARRIER AGGREGATION

PRIMARY CARRIERLICENSED ANCHOR

SECONDARY CARRIER @ 5 GHzUNLICENSED

POWER

TX POWER

OUT OF BAND (00B)EMISSION BY TRANSMITTER

SPURIOUS EMISSIONBY TRANSMITTER

TX SIGNAL OF 5 GHz Wi-Fi

BAND FILTER

ANTENNA ISOLATION

5G NR BAND n79 INTERFERENCE WITH 5G NR

24.25 - 27.5 GHz27.5 - 28.35 GHz

26.5 - 29.5 GHz37 - 40 GHz

5G mmWave Operating Bands

References: http://www.idirect.net/Company/Resource-Center/Satellite-Basics/Frequency-Bands.aspx | http://www.3gpp.org/DynaReport/38-series.htm

Product specifications and descriptions in this document subject to change without notice. © Keysight Technologies, 2019 | Printed in the USA, January 11, 2019 | 5992-3354EN keysight.com

www.keysight.com/find/5G

5G Solutions for Coexistence Testing

SystemVue 5G WirelessVerification Library

M9383/84B mmWave VXG Signal Generator

5G Waveform Generationand Analysis Testbed

IxLoad-Wireless XAir3 Test Platform

E7515B 5G Network Emulation Solutions

F8800A PROPSIM 64Channel Emulator

Nemo Outdoor Drive Test

ANALYZE 5G MODEM AND DEVICE RF AND PROTOCOLBEHAVIOR UNDER DIFFERENT SHARED SPECTRUM SCENARIOS

SIMULATE COEXISTENCE SCENARIOS BEFORE DEVELOPING PROTOTYPES

VERIFY IN-BAND AND OUT-OF-BAND EMISSIONS WITH CONFIDENCE

VALIDATE WIRELESS NETWORK PERFORMANCE WITH 4G/5G UE EMULATION

TEST FOR COEXISTENCE IN THE FIELD

Page 2: Top 5 Coexistence Considerations for Successful …literature.cdn.keysight.com/litweb/pdf/5992-3354EN.pdfTest for fair coexistence between 5G NR and legacy systems by evaluating coexistence

5G New Radio CoexistenceIn Wireless CommunicationsPOSTER