LTE TDD
For Waveform Playback (ARB) capability.
This topic describes the settings of the Downlink > Transport Channel node for a Basic TDD carrier.
DL-SCH (Downlink Shared Channel)
UE Specific Reference Signals (DM-RS)
Query only
Displays the number of this DL-SCH transport channel instance.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:DLSCh<n>:NUMBer? |
|
SCPI Example |
RADio:LTETdd:WAVeform:CCARrier:DL:TCH:DLSCh:NUMBer? |
|
Preset |
1 |
|
State Saved |
No |
|
Initial S/W Revision |
A.20.01 |
Enables or disables this DL-SCH transport channel instance.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:DLSCh<n>:STATe ON|OFF|1|0 [:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:DLSCh<n>:STATe? |
|
SCPI Example |
RADio:LTETdd:WAVeform:CCARrier:DL:TCH:DLSCh:STATe ON RADio:LTETdd:WAVeform:CCARrier:DL:TCH:DLSCh:STATe? |
|
Preset |
On |
|
State Saved |
Yes |
|
Initial S/W Revision |
A.20.01 |
Sets the power level, in dB for this DL-SCH channel relative to the total carrier power.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:DLSCh<n>:POWer <rel_ampl> [:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:DLSCh<n>:POWer? |
|
SCPI Example |
RADio:LTETdd:WAVeform:CCARrier:DL:TCH:DLSCh:POWer 0.000 RADio:LTETdd:WAVeform:CCARrier:DL:TCH:DLSCh:POWer? |
|
Preset |
0.000 dB |
|
State Saved |
Yes |
|
Min |
-60.000 dB |
|
Max |
20.000 dB |
|
Initial S/W Revision |
A.20.01 |
Sets the Radio Network Temporary Identifier for this DL-SCH channel.
See 3GPP TS 36.211 and 36.321.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:DLSCh<n>:RNTi <integer> [:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:DLSCh<n>:RNTi? |
|
SCPI Example |
RADio:LTETdd:WAVeform:CCARrier:DL:TCH:DLSCh:RNTi 1 RADio:LTETdd:WAVeform:CCARrier:DL:TCH:DLSCh:RNTi? |
|
Preset |
1 |
|
State Saved |
Yes |
|
Min |
0 |
|
Max |
65535 |
|
Initial S/W Revision |
A.20.01 |
Query only
Displays the physical channel number(s) associated with this DL-SCH transport channel instance.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:DLSCh<n>:PCH? |
|
SCPI Example |
RADio:LTETdd:WAVeform:CCARrier:DL:TCH:DLSCh:PCH? |
|
Preset |
3,4 |
|
State Saved |
No |
|
Initial S/W Revision |
A.20.01 |
Query only
Displays the coding state for this DL-SCH channel.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:DLSCh<n>:CODing:STATe? |
|
SCPI Example |
RADio:LTETdd:WAVeform:CCARrier:DL:TCH:DLSCh:CODing:STATe? |
|
Notes |
This setting is always Off in Basic TDD as transport channel coding is not available in Basic TDD. Use Advanced TDD for turbo coding. |
|
Preset |
Off |
|
State Saved |
No |
|
Initial S/W Revision |
A.20.01 |
Sets the data source for the DL-SCH transport channel payload.
PN9 and PN15 generate pseudo-random bit sequences.
User Defined Bits allows a custom bit pattern.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:DLSCh<n>:DATA PN9|PN15|USER [:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:DLSCh<n>:DATA? |
|
SCPI Example |
RADio:LTETdd:WAVeform:CCARrier:DL:TCH:DLSCh:DATA PN9 RADio:LTETdd:WAVeform:CCARrier:DL:TCH:DLSCh:DATA? |
|
Preset |
PN9 |
|
State Saved |
Yes |
|
Initial S/W Revision |
A.20.01 |
Sets the user-defined bit string used as the DL-SCH payload when Data is set to User Defined Bits. Specify as a binary string in double quotes.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:DLSCh<n>:DATA:USER "<bitstring>" [:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:DLSCh<n>:DATA:USER? |
|
SCPI Example |
RADio:LTETdd:WAVeform:CCARrier:DL:TCH:DLSCh:DATA:USER "00000000" RADio:LTETdd:WAVeform:CCARrier:DL:TCH:DLSCh:DATA:USER? |
|
Dependencies |
This setting is enabled when Data is set to User Defined Bits. |
|
Preset |
"00000000" |
|
State Saved |
Yes |
|
Initial S/W Revision |
A.20.01 |
Enables or disables the UE-specific Demodulation Reference Signal (DM-RS) for this DL-SCH channel.
Only available when DL-SCH State is On.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:DLSCh<n>:DMRS:STATe ON|OFF|1|0 |
|
SCPI Example |
RADio:LTETdd:WAVeform:CCARrier:DL:TCH:DLSCh:DMRS:STATe ON |
|
Dependencies |
Requires DL-SCH State to be On. |
|
Preset |
Off |
|
State Saved |
Yes |
|
Initial S/W Revision |
A.20.01 |
Sets the power level, in dB for the DM-RS relative to the total carrier power.
Only enabled when DM-RS State is On.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:DLSCh<n>:DMRS:POWer <rel_ampl> [:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:DLSCh<n>:DMRS:POWer? |
|
SCPI Example |
RADio:LTETdd:WAVeform:CCARrier:DL:TCH:DLSCh:DMRS:POWer 0 RADio:LTETdd:WAVeform:CCARrier:DL:TCH:DLSCh:DMRS:POWer? |
|
Dependencies |
Requires DM-RS State to be On. |
|
Preset |
0 dB |
|
State Saved |
Yes |
|
Min |
-60.000 dB |
|
Max |
20.000 dB |
|
Initial S/W Revision |
A.20.01 |
Selects whether DM-RS Antenna Port is set automatically (Auto) or manually (Manual).
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:DLSCh<n>:DMRS:APORt:CONFig AUTO|MANual [:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:DLSCh<n>:DMRS:APORt:CONFig? |
|
SCPI Example |
RADio:LTETdd:WAVeform:CCARrier:DL:TCH:DLSCh:DMRS:APORt:CONFig AUTO RADio:LTETdd:WAVeform:CCARrier:DL:TCH:DLSCh:DMRS:APORt:CONFig? |
|
Couplings |
When Auto, DM-RS Antenna Port is read-only and set to Antenna Port + 7. |
|
Dependencies |
Controls read/write state of DM-RS Antenna Port. |
|
Preset |
AUTO |
|
State Saved |
Yes |
|
Initial S/W Revision |
A.20.01 |
Sets the antenna port for DM-RS transmission.
Available ports depend on Total Number of Antennas and Cyclic Prefix.
For Extended CP, ports 9-14 are not supported.
See 3GPP TS 36.211.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:DLSCh<n>:DMRS:APORt P5|P7|P8|P9|P10|P11|P12|P13|P14 [:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:DLSCh<n>:DMRS:APORt? |
|
SCPI Example |
RADio:LTETdd:WAVeform:CCARrier:DL:TCH:DLSCh:DMRS:APORt P7 RADio:LTETdd:WAVeform:CCARrier:DL:TCH:DLSCh:DMRS:APORt? |
|
Notes |
Read-only when DM-RS Antenna Configuration is Auto. Auto value = Antenna Port + 7. |
|
Couplings |
Controlled by DM-RS Antenna Configuration and Total Number of Antennas. |
|
Preset |
P7 |
|
State Saved |
Yes |
|
Initial S/W Revision |
A.20.01 |
Sets the Scramble ID (nSCID) for UE-specific reference signals.
See 3GPP TS 36.211.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:DLSCh<n>:DMRS:SCID <integer> [:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:DLSCh<n>:DMRS:SCID? |
|
SCPI Example |
RADio:LTETdd:WAVeform:CCARrier:DL:TCH:DLSCh:DMRS:SCID 0 RADio:LTETdd:WAVeform:CCARrier:DL:TCH:DLSCh:DMRS:SCID? |
|
Notes |
Applicable when DM-RS Antenna Port is P7 or P8 and Total Number of Antennas is 2, 4, or 8. |
|
Dependencies |
Requires DM-RS Antenna Port P7 or P8 with Total Number of Antennas 2, 4, or 8. |
|
Preset |
0 |
|
State Saved |
Yes |
|
Min |
0 |
|
Max |
1 |
|
Initial S/W Revision |
A.20.01 |
Adds a new DL-SCH transport channel.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:CONFig:DLSCh "<string>" |
|
SCPI Example |
:RADio:LTETdd:WAVeform:CCARrier1:DLINk:CONFig:DLSCh "0;0;0;0" |
|
Notes |
Argument is a semicolon-separated positional string: frame ; subframe(s, comma-list) ; modType ; resourceBlocks(comma-list)
|
|
Preset |
N/A |
|
State Saved |
Yes |
|
Initial S/W Revision |
A.20.01 |
Reconfigures an existing DL-SCH transport channel.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:TCHannel:EDIT "<string>" |
|
SCPI Example |
RADio:LTETdd:WAVeform:CCARrier1:DLINk:TCHannel:EDIT "0;0;0;0;10" |
|
Notes |
Semicolon-separated positional string: channelIdx ; frame ; subframe(s, comma-list) ; modType ; resourceBlocks(comma-list)
|
|
Preset |
N/A |
|
State Saved |
Yes |
|
Initial S/W Revision |
A.20.01 |
Deletes the DL-SCH transport channel at the specified 1-based index. The identifying numbers of subsequent transport channels are adjusted automatically.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:TCHannel:DELete:DLSCh <integer> |
|
SCPI Example |
RADio:LTETdd:WAVeform:CCARrier:DLINk:TCHannel:DELete:DLSCh 1 |
|
Preset |
N/A |
|
State Saved |
Yes |
|
Initial S/W Revision |
A.20.01 |
Query only
Displays the number of this BCH transport channel instance.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:BCH:NUMBer? |
|
SCPI Example |
RADio:LTETdd:WAVeform:CCARrier:DL:TCH:BCH:NUMBer? |
|
Preset |
2 |
|
State Saved |
No |
|
Initial S/W Revision |
A.20.01 |
Enables or disables the BCH transport channel.
When On, the BCH and its associated PBCH physical channel are active.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:BCH:STATe ON|OFF|1|0 [:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:BCH:STATe? |
|
SCPI Example |
RADio:LTETdd:WAVeform:CCARrier:DL:TCH:BCH:STATe ON RADio:LTETdd:WAVeform:CCARrier:DL:TCH:BCH:STATe? |
|
Preset |
On |
|
State Saved |
Yes |
|
Initial S/W Revision |
A.20.01 |
Sets the power level, in dB for this BCH channel relative to the total carrier power.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:BCH:POWer <rel_ampl> [:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:BCH:POWer? |
|
SCPI Example |
RADio:LTETdd:WAVeform:CCARrier:DL:TCH:BCH:POWer 0 RADio:LTETdd:WAVeform:CCARrier:DL:TCH:BCH:POWer? |
|
Preset |
0.000 dB |
|
State Saved |
Yes |
|
Min |
-60.000 dB |
|
Max |
20.000 dB |
|
Initial S/W Revision |
A.20.01 |
Query only
Displays the physical channel number associated with this BCH transport channel.
BCH always maps to PBCH.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:BCH:PCH? |
|
SCPI Example |
RADio:LTETdd:WAVeform:CCARrier:DL:TCH:BCH:PCH? |
|
Preset |
1 |
|
State Saved |
No |
|
Initial S/W Revision |
A.20.01 |
Query only
Displays the coding state for the BCH channel.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:BCH:CODing:STATe? |
|
SCPI Example |
RADio:LTETdd:WAVeform:CCARrier:DL:TCH:BCH:CODing:STATe? |
|
Notes |
Read-only. This setting is always Off in Basic TDD as transport channel coding is not available in Basic TDD. Use Advanced TDD for turbo coding. |
|
Preset |
Off |
|
State Saved |
No |
|
Initial S/W Revision |
A.20.01 |
Sets the data source for the BCH transport channel payload.
PN9 and PN15 generate pseudo-random bit sequences.
User Defined Bits allows a custom bit pattern.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:BCH:DATA PN9|PN15|USER [:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:BCH:DATA? |
|
SCPI Example |
RADio:LTETdd:WAVeform:CCARrier:DL:TCH:BCH:DATA PN9 RADio:LTETdd:WAVeform:CCARrier:DL:TCH:BCH:DATA? |
|
Preset |
PN9 |
|
State Saved |
Yes |
|
Initial S/W Revision |
A.20.01 |
Sets the user-defined bit string used as the BCH payload when Data is set to User Defined Bits. Specify as a binary string in double quotes.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:BCH:DATA:USER "<bitstring>" [:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DL:TCH:BCH:DATA:USER? |
|
SCPI Example |
RADio:LTETdd:WAVeform:CCARrier:DL:TCH:BCH:DATA:USER "00000000" RADio:LTETdd:WAVeform:CCARrier:DL:TCH:BCH:DATA:USER? |
|
Dependencies |
This setting is enabled only when Data is set to User Defined Bits. |
|
Preset |
"00000000" |
|
State Saved |
Yes |
|
Initial S/W Revision |
A.20.01 |
Adds the specified BCH transport channel. The identifying numbers of subsequent transport channels are adjusted automatically.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:CONFig:BCH |
|
SCPI Example |
RADio:LTETdd:WAVeform:CCARrier1:DLINk:CONFig:BCH |
|
Notes |
If a BCH already exists, this command has no effect. Adding BCH automatically creates a Higher-Layer controlled PBCH. |
|
Preset |
N/A |
|
State Saved |
Yes |
|
Initial S/W Revision |
A.20.01 |
Deletes the BCH transport channel (and its Higher-Layer controlled PBCH).
No argument when BCH is a single instance.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:TCHannel:DELete:BCH |
|
SCPI Example |
RADio:LTETdd:WAVeform:CCARrier1:DLINk:TCHannel:DELete:BCH |
|
Preset |
N/A |
|
State Saved |
Yes |
|
Initial S/W Revision |
A.20.01 |