5G NR
Updated for 38.141-2 (v17.10.0). Learn more.
Remote Command - PRACH Test Preambles Config
User Interface - PRACH Test Preambles Config
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SCPI Command |
[:SOURce]:RADio:NR5G:WAVeform[:ARB]:CCARrier<carrier>:CONFig:PPReambles "PrachTestConfigMode: FR1Normal|FR2Normal|FR1A|FR1B|FR1Sformat|FR1Lra|FR2Sformat|FR2Lra,Bandwidth:FR1BW5M|FR1BW10M|FR1BW15M|FR1BW20M|FR1BW25M|FR1BW30M|FR1BW35M|FR1BW40M|FR1BW45M|FR1BW50M|FR1BW60M|FR1BW70M|FR1BW80M|FR1BW90M|FR1BW100M|FR2BW50M|FR2BW100M|FR2BW200M|FR2BW400M|FR2BW800M|FR2BW1600M,Numerology:MU0|MU1|MU2Ncp|MU2Ecp|MU3|MU5,PRACHFormat:F0|F1|F2|F3|FA0|FA1|FA2|FA3|FB1|FB2|FB3|FB4|FC0|FC2,SCS:SCS15K|SCS30K|SCS60K|SCS120K|SCS1K25|SCS5K|SCS480K,IncreaseTimeOffset:ON|OFF|1|0,Subframes: <string>, LRA: <Integer>" |
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SCPI Example |
RAD:NR5G:WAV:CCAR0:CONF:PPR "Bandwidth:FR1BW25M,Numerology:MU1,PRACHFormat:FA1,SCS:SCS30K,IncreaseTimeOffset: ON,Subframes:3:6" RADio:NR5G:WAVeform:CCAR0:CONF:PPR "PrachTestConfigMode: FR1A, Bandwidth: FR1BW100M, Numerology: MU1, PRACHFormat: F0, SCS: SCS1K25, IncreaseTimeOffset: On" RADio:NR5G:WAVeform:CCAR0:CONF:PPR " PrachTestConfigMode: FR2Lra, Bandwidth: FR2BW800M, Numerology: MU5, PRACHFormat: FA2, SCS: SCS480K, IncreaseTimeOffset: On, LRA: 139" |
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Couplings |
PRACH test preambles configuration parameters and their default values are listed below: Bandwidth: FR1BW100M, Numerology: MU1, PRACHFormat: F0, SCS: SCS1K25 , IncreaseTimeOffset: OFF. Subframes: <string> One combined string is needed to be inputted in SCPI command. The format of it is "name: value , name: value …" . Default value will be used if parameter is not provided. The order of parameters does not matter. Parameter's name and value are case sensitive. If parameter's type is enum and the inputted enum value is illegal , error " -224, Illegal parameter value; xxx has incorrect value." will be generated. |
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GUI Location |
Apps > 5G NR > Carrier PRACH > PRACH Test Preambles Config |
Choices:
Downlink: Based on the Table 5.3.2-1, 5.3.2-2, and 5.3.2-3 in 38.104
Uplink: Based on the Table 5.3.2-1 in 38.101-1 and 38.101-2
Selects the bandwidth configuration for the carrier.
Choices: Table A.6-1 | Table A.6-2 | Table A.6-3 | Table A.6-4 | Table A.6-5 | Table A.6-6 | Table A.6-7 | Table A.6-8
Coupling: Choices vary with Bandwidth setting
Select a predefined mode, based on 38.141-2 (v17.10.0).
For more information, see PRACH Test Preambles Config Update for 38.141-2 v17.10.0.
Select the Numerology of the configuration, the choices are related to the selected Bandwidth.
Choices: Format 0 | Format A1 | Format A2 | Format A3 | Format B4 | Format C0 | Format C2
Set the PRACH Burst format to be configured for current carrier, see A.6 in 38.141.
Select the subcarrier spacing for PRACH based on the burst format, see A.6 in 38.141
Choices:
SCS for PRACH = 120:571 | 1151
SCS for PRACH = 480: 571 | 139
Coupling: Available only when Bandwidth is set to FR2 (100MHz to 1600MHz) and Mode is set to Table A.6-8
Select the LRAvalue.
For more information, see Table A.6-8 in PRACH Test Preambles Config Update for 38.141-2 v17.10.0.
Display the Ncs based on burst format and SCS for PRACH, see A.6 in 38.141.
Display the Logical sequence index based on burst format and SCS for PRACH, see A.6 in 38.141.
Display the v based on burst format and SCS for PRACH, see A.6 in 38.141.
Enable or disable time offset increase for each burst, see section 8.4 in 38.141.
Display the Time Offset Base value, see section 8.4 in 38.141. This value will be applied to the timing offset of carrier.
Defines which subframes will be used for one PRACH burst. It’s a string to define a int array. The range of each number is from 0 to 9. The numbers are separated by “,” and “x:y” means from x to y with both x and y included.
The format “x:y:z” is not supported, which means the step can only be one.