LTE TDD
For Waveform Playback (ARB) capability.
This topic describes the settings of the Downlink > Cell Parameters node for an Advanced TDD Downlink carrier.
Total Number of Resource Blocks
Total Number of Occupied Subcarriers
Reference Signal Transmit Power (RSTP)
OFDM Symbol Transmit Power (OSTP)
Enter a value for Cell ID. The software uses this value to set the Physical Layer Cell ID Group and Physical Layer Cell ID Sector cells using:
Cell ID = (3 × Physical Cell ID Group) + Physical Cell ID Sector
See 3GPP TS 36.211 for more information.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:CIDentity <integer> [:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:CIDentity? |
|
SCPI Example |
:RADio:LTETdd:WAVeform:CCARrier:DLINk:CIDentity 0 :RADio:LTETdd:WAVeform:CCARrier:DLINk:CIDentity? |
|
Dependencies |
Default 0 with Auto Carrier Aggregation Configuration set to Off; same as the CC index number with Auto Carrier Aggregation Configuration set to On. Controls Physical Layer Cell ID Group/Sector (Cell ID = 3 × Group + Sector). |
|
Preset |
1 |
|
State Saved |
Yes |
|
Min |
0 |
|
Max |
503 |
|
Initial S/W Revision |
A.20.01 |
Query only
Displays the Physical Layer Cell ID Group. This value is set by software based on Cell ID.
Formula: Cell ID = (3 x Physical Cell ID Group) + Physical Cell ID Sector.
Ref: 3GPP TS 36.211.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:PLCid:GRP? |
|
SCPI Example |
RADio:LTETdd:WAVeform:CCARrier:DLINk:PLCid:GRP? |
|
Range |
0 to 167 (related to cell ID) |
|
Couplings |
Coupled to Cell ID |
|
Preset |
0 |
|
State Saved |
Yes |
|
Min |
0 |
|
Max |
167 |
|
Initial S/W Revision |
A.20.01 |
Query only
Displays the Physical Layer Cell ID Sector. This value is set by software based on Cell ID.
Formula: Cell ID = (3 x Physical Cell ID Group) + Physical Cell ID Sector.
Ref: 3GPP TS 36.211.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:PLCid:SECT? |
|
SCPI Example |
RADio:LTETdd:WAVeform:CCARrier:DLINk:PLCid:SECT? |
|
Range |
0 | 1 | 2 |
|
Couplings |
Coupled to Cell ID |
|
Preset |
1 |
|
State Saved |
Yes |
|
Min |
0 |
|
Max |
2 |
|
Initial S/W Revision |
A.20.01 |
In multi-antenna configurations, specify the total number of antennas used for the downlink transmission.
For multiple signal generator configurations, set the Channel State parameter in the Fading section of the Carrier node to On to make this cell active. When the channel state is off, you must change the number of signal generators (for example, Quick Setup Mx1, Mx2, Mx4, Mx8) to change the number of BS antennas.
This parameter indicates the total number of physical antenna port configuration used for downlink transmission in this cell.
Total Number of Antennas and Number of CRS Antenna Ports determine the resource elements that are reserved for Cell Specific reference signals.
Refer to 3GPP TS 36.211 and 36.311.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:APORts:COUNt 1|2|4|8 [:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:APORts:COUNt? |
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SCPI Example |
:RADio:LTETdd:WAVeform:CCARrier:DLINk:APORts:COUNt 1 :RADio:LTETdd:WAVeform:CCARrier:DLINk:APORts:COUNt? |
|
Couplings |
Coupled to Number of CRS Antenna Ports (CRS Antenna Ports must be ≤ Total Number of Antennas).
|
|
Preset |
1 |
|
State Saved |
Yes |
|
Min |
1 |
|
Max |
8 |
|
Initial S/W Revision |
A.20.01 |
Sets the physical antenna port for transmitting downlink signals.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:APORt <integer> [:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:APORt? |
|
SCPI Example |
RADio:LTETdd:WAVeform:CCARrier:DLINk:APORt 0 RADio:LTETdd:WAVeform:CCARrier:DLINk:APORt? |
|
Notes |
Available selections are determined by Total Number of Antennas.
|
|
Preset |
PORT0 |
|
State Saved |
Yes |
|
Min |
N/A |
|
Max |
N/A |
|
Initial S/W Revision |
A.20.1 |
Sets system bandwidth. Based on the selected System Bandwidth, the Total Number of Resource Blocks and Total Number of Occupied Sub-carriers are automatically adjusted. These are automatically reconfigured when system bandwidth changes.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:BANDwidth [:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:BANDwidth? |
|
SCPI Example |
:RADio:LTETdd:WAVeform:CCARrier:DLINk:BANDwidth B10M :RADio:LTETdd:WAVeform:CCARrier:DLINk:BANDwidth? |
|
Preset |
F10M |
|
State Saved |
Yes |
|
Min |
N/A |
|
Max |
N/A |
|
Initial S/W Revision |
A.20.01 |
The value in this cell is set by the software based on the System Bandwidth setting.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:RB:COUNt? |
|
SCPI Example |
:RADio:LTETdd:WAVeform:CCARrier:DLINk:RB:COUNt? |
|
Notes |
Computed by software from System Bandwidth. |
|
Preset |
50 |
|
State Saved |
No |
|
Min |
N/A |
|
Max |
N/A |
|
Initial S/W Revision |
A.20.01 |
The value in this cell is set by the software based on the System Bandwidth setting. The center subcarrier is not used for downlink transmission, so the number of transmitted subcarriers is one less than the number of occupied subcarriers.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:SCARrier:COUNt? |
|
SCPI Example |
:RADio:LTETdd:WAVeform:CCARrier:DLINk:SCARrier:COUNt? |
|
Notes |
Computed by software from System Bandwidth. |
|
Preset |
600 |
|
State Saved |
No |
|
Min |
N/A |
|
Max |
N/A |
|
Initial S/W Revision |
A.20.01 |
Query only
Displays the subcarrier spacing.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:SCSPacing? |
|
SCPI Example |
:RADio:LTETdd:WAVeform:CCARrier:DLINk:SCSPacing? |
|
Notes |
Computed by software (Default 15 kHz). |
|
Preset |
F15K |
|
State Saved |
No |
|
Min |
N/A |
|
Max |
N/A |
|
Initial S/W Revision |
A.20.01 |
Selects a Normal or Extended cyclic prefix. The software sets the Number of Symbols for Resource Block based on the cyclic prefix selection.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:CP NORMal|EXTended [:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:CP? |
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SCPI Example |
:RADio:LTETdd:WAVeform:CCARrier:DLINk:CP NORMal :RADio:LTETdd:WAVeform:CCARrier:DLINk:CP? |
|
Dependencies |
For Basic, Advanced UL, and Advanced DL LTE-A TDD when Auto Carrier Aggregation Configuration is set to On, this setting is read-only for the secondary cells that has the same value as the primary cell. Controls Number of Symbols per RB. |
|
Preset |
NORMal |
|
State Saved |
Yes |
|
Min |
N/A |
|
Max |
N/A |
|
Initial S/W Revision |
A.20.01 |
Query only
Displays the number of consecutive subcarriers in a resource block.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:RB:SCARrier:COUNt? |
|
SCPI Example |
:RADio:LTETdd:WAVeform:CCARrier:DLINk:RB:SCARrier:COUNt? |
|
Notes |
Computed by software (Default 12). |
|
Preset |
12 |
|
State Saved |
No |
|
Min |
N/A |
|
Max |
N/A |
|
Initial S/W Revision |
A.20.01 |
Query only
Displays the number of consecutive OFDM symbols in a slot.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:RB:SYMBol:COUNt? |
|
SCPI Example |
:RADio:LTETdd:WAVeform:CCARrier:DLINk:RB:SYMBol:COUNt? |
|
Dependencies |
Computed by software
|
|
Preset |
7 |
|
State Saved |
No |
|
Min |
N/A |
|
Max |
N/A |
|
Initial S/W Revision |
A.20.01 |
Enter a value that specifies the distance between the antennas. The value is specified in wavelength units of the center frequency for the corresponding Component Carrier.
Use this setting when generating a beamforming signal.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:ASPacing <double> [:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:ASPacing? |
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SCPI Example |
:RADio:LTETdd:WAVeform:CCARrier:DLINk:ASPacing 0.5 :RADio:LTETdd:WAVeform:CCARrier:DLINk:ASPacing? |
|
Preset |
0.5 |
|
State Saved |
Yes |
|
Min |
0.00 |
|
Max |
100 |
|
Initial S/W Revision |
A.20.01 |
Selects the power definition type for the primary cell.
If Total Power is selected, power reference is the Amplitude parameter on the Instrument node. RSTP and OSTP are automatically calculated by Amplitude (Instrument), Power (Component Carrier), and each carrier signal setting.
If RSTP is selected, power reference is RSTP. Amplitude (Instrument), Power (Component Carrier), and OSTP are automatically calculated by RSTP and each carrier signal setting. In this case, Power on Component Carrier is set read-only.
The power definition type for secondary cells is automatically set to the same type as the primary cell and set as read-only.
In multiple carrier case, the Power Definition Type parameter in each carrier should be same.
If uplink and downlink carriers are mixed as multiple carriers, correct RSTP calculation is not available.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:PDType TPOW|RSTP [:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:PDType? |
|
SCPI Example |
:RADio:LTETdd:WAVeform:CCARrier:DLINk:PDType TPOW :RADio:LTETdd:WAVeform:CCARrier:DLINk:PDType? |
|
Notes |
All carriers in an aggregation must use the same Power Definition Type. |
|
Dependencies |
Controls the read-only state of RSTP and Power. |
|
Preset |
TPOW |
|
State Saved |
Yes |
|
Min |
N/A |
|
Max |
N/A |
|
Initial S/W Revision |
A.20.01 |
Sets the Reference Signal Transmit Power. Automatically calculated from Amplitude, Power, and carrier signal settings.
Ref: 3GPP TS 36.141.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:RSTP <rel-ampl> [:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:RSTP? |
|
SCPI Example |
:RADio:LTETdd:WAVeform:CCARrier:DLINk:RSTP -40.79 :RADio:LTETdd:WAVeform:CCARrier:DLINk:RSTP? |
|
Notes |
Value is in dBm. |
|
Dependencies |
In case Power Definition Type is Total Power, RSTP is automatically calculated by the software and the value is read-only, In case Power Definition Type is RSTP, the value is settable. |
|
Preset |
-40.79 |
|
State Saved |
Yes |
|
Min |
-144 |
|
Max |
-15 |
|
Initial S/W Revision |
A.20.01 |
Query only
Displays the Downlink OFDM Symbol Transmit Power, in dBm. This parameter is set by the software from Power Definition Type and related power settings.
For detailed information about OSTP, refer to 3GPP TS 36.141.
|
SCPI Command |
[:SOURce]:RADio:LTETdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:OSTP? |
|
SCPI Example |
:RADio:LTETdd:WAVeform:CCARrier:DLINk:OSTP? |
|
Preset |
-13.01 |
|
State Saved |
No |
|
Min |
N/A |
|
Max |
N/A |
|
Initial S/W Revision |
A.20.01 |