Open topic with navigation
PUCCH
The software controls PUCCH transmission based on the subframe status as set in the UCI Subframe Status tab. The DMRS for PUCCH are assigned according to the PUCCH format and the cyclic prefix mode. Its implementation is based on conformance testing per the 3GPP standards TS 36.141.
The setting for this window cannot be changed while transmitting the signal (State On button clicked). To change settings, first click the State Off button to stop the signal.
The software does not use these settings when it is controlling multiple instruments as shown in the tree view.
References:
3GPP TS 36.211 Physical Channels and Modulation:
5.4 Physical uplink control channel
Buttons
|
|
This button indicates that the current real-time settings have been applied to the instrument—no action is required. This button is not available when the Apply Needed button is active. When using multiple instruments as shown in the tree view, this button is not displayed.
|
|
|
This button displays in place of the Settings Current button. It indicates that the instrument settings are not currrent and need to be updated with the new software settings. Click this button to update the insturment's settings. This button shows in all windows regardless of where the change was made. When using multiple instruments as shown in the tree view, this button is not displayed.
[:SOURce]:RADio:LTE:TDD[:BBG]:ULINk:APPLy
[:SOURce]:RADio:LTE:TDD[:BBG]:ULINk:APPLy?
|
1. PUCCH Settings
State
Choice: On |Off
Default: On
Coupling: This setting is inactive and set to off when using multiple instruments as shown in the tree view.
Sets the PUCCH channel state.
[:SOURce]:RADio:LTE:TDD[:BBG]:ULINk:PUCCh[:STATe] 0|1|OFF|ON
[:SOURce]:RADio:LTE:TDD[:BBG]:ULINk:PUCCh[:STATe]?
Power
Range: -60 to 20
Default: 0
Sets the PUCCH channel power in dB.
[:SOURce]:RADio:LTE:TDD[:BBG]:ULINk:PUCCh:POWer <val>
[:SOURce]:RADio:LTE:TDD[:BBG]:ULINk:PUCCh:POWer?
2. Transmission Settings
N_RB(2)
Range: 0 to <maximum or resource blocks - 1>
Default: 0
Sets the bandwidth in terms of resource blocks, 
, that are available for use by formats 2, 2a, 2b transmission in each slot. This is one of the values used for generating and mapping PUCCH and DMRS PUCCH (see TS 36.211).
[:SOURce]:RADio:LTE:TDD[:BBG]:ULINk:PUCCh:NRB2 <val>
[:SOURce]:RADio:LTE:TDD[:BBG]:ULINk:PUCCh:NRB2?
N_CS(1)
Range: 0 to 7
Default: 0
Sets the number of cyclic shifts, 
, for formats 1/1a/1b used in a resource block with a mix of formats 1/1a/1b and 2/2a/2b. There is at most one mixed resource block per slot. If the value is 0, there is no mixed resource block. This is one of the values used for generating and mapping PUCCH and DMRS PUCCH (see TS 36.211).
[:SOURce]:RADio:LTE:TDD[:BBG]:ULINk:PUCCh:NCS[1] <val>
[:SOURce]:RADio:LTE:TDD[:BBG]:ULINk:PUCCh:NCS[1]?
nPUCCH(1)
|
Range:
|
|
Normal CP
|
0-215
|
1.4 MHz BW
|
| |
0-539
|
3 MHz BW
|
| |
0-899
|
5 MHz BW
|
| |
0-1799
|
10 MHz BW
|
| |
0-2699
|
15 MHz BW
|
| |
0-3599
|
20 MHz BW
|
| |
|
|
|
Extended CP
|
0-143
|
1.4 MHz BW
|
| |
0-359
|
3 MHz BW
|
| |
0-599
|
5 MHz BW
|
| |
0-1199
|
10 MHz BW
|
| |
0-1799
|
15 MHz BW
|
| |
0-2399
|
20 MHz BW
|
Default: 0
Sets the resource index, 
, for PUCCH Formats 1, 1a, 1b.
The maximum value (the range of values) is calculated by the system bandwidth, cyclic prefix, N_RB(2), N_CS(1) and Delta Shift. This is one of the values used for generating and mapping PUCCH and DMRS PUCCH (see 3GPP TS 36.211).
[:SOURce]:RADio:LTE:TDD[:BBG]:ULINk:PUCCh:N[1] <val>
[:SOURce]:RADio:LTE:TDD[:BBG]:ULINk:PUCCh:N[1]?
nPUCCH(2)
Range:
Default: 0
Sets the resource index, 
, for PUCCH formats 2, 2a, 2b, expressed in multiples of 
, the resource block size expressed as a number of subcarriers. This is mapped directly into a single cyclic shift resource. This is one of the values used for generating and mapping PUCCH and DMRS PUCCH (see 3GPP TS 36.211).
[:SOURce]:RADio:LTE:TDD[:BBG]:ULINk:PUCCh:N2 <val>
[:SOURce]:RADio:LTE:TDD[:BBG]:ULINk:PUCCh:N2?
3. Demodulation Reference Signal Settings
The demodulation reference signals are defined by a cyclic shift and use the same resource allocation used by the PUCCH; power can be set independently. The DMRS for the PUCCH are assigned according to the PUCCH format and the cyclic prefix mode. For example, when the PUCCH format is 1/1a/1b with normal cyclic prefix, the DMRS for the PUCCH is assigned to SC-FDMA symbols #2, #3, and #4 in a PUCCH slot.
DMRS Power
Range: -60 to 20
Default: 0
Sets the power in dB of the demodulation reference signal (DMRS) for the PUCCH relative to the carrier power.
[:SOURce]:RADio:LTE:TDD[:BBG]:ULINk:PUCCh:DMRSignal:POWer <val>
[:SOURce]:RADio:LTE:TDD[:BBG]:ULINk:PUCCh:DMRSignal:POWer?
Delta Shift PUCCH
Choices: 1 | 2 | 3
Default: 1
Enter the Delta Shift PUCCH , the number of equally spaced cyclic time shifts. This parameter is used in calculating the number of DMRS PUCCH resources per resource block reserved for DMRS.
[:SOURce]:RADio:LTE:TDD[:BBG]:ULINk:PUCCh:DSHift <val>
[:SOURce]:RADio:LTE:TDD[:BBG]:ULINk:PUCCh:DSHift?