LTE FDD

SRS Uplink (EUTRA/eMTC)

For Waveform Playback (ARB) capability.

This topic describes the settings of the Sounding Reference Signal (SRS) node.

General

Frequency Domain Resources

Time Domain Resources

Sequence Generation

General

Enabled

This setting specifies the enable state of Sounding Reference Signal.

SCPI Command	[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<carrier>:ULINk:SRS[:STATe] OFF\|ON\|0\|1 [:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<carrier>:ULINk:SRS[:STATe]?
SCPI Example	:RAD:LTEF:WAV:CCAR:ULIN:SRS:STAT OFF :RAD:LTEF:WAV:CCAR:ULIN:SRS:STAT?
State Saved	Yes
Preset	OFF
Initial S/W Revision	A.14.00

Power

Set the power of the sounding reference signal in dB.

SCPI Command	[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<carrier>:ULINk:SRS:POWer <rel_ampl> [:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<carrier>:ULINk:SRS:POWer?
SCPI Example	:RAD:LTEF:WAV:CCAR:ULIN:SRS:POW 10dB :RAD:LTEF:WAV:CCAR:ULIN:SRS:POW?
State Saved	Yes
Notes	Unit in GUI: dB
Preset	0 dB
Min	-60 dB
Max	20 dB
Resolution	0.001
Initial S/W Revision	A.14.00

Frequency Domain Resources

Bandwidth Configuration (C_SRS)

Sets a value for the sounding reference signal bandwidth configuration (C_SRS). See 3GPP TS 36.211.

SCPI Command	[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<carrier>:ULINk:SRS:BWConfig <integer> [:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<carrier>:ULINk:SRS:BWConfig?
SCPI Example	:RAD:LTEF:WAV:CCAR:ULIN:SRS:BWC 5 :RAD:LTEF:WAV:CCAR:ULIN:SRS:BWC?
State Saved	Yes
Preset	7
Min	0
Max	7
Initial S/W Revision	A.14.00

Bandwidth (B_SRS)

Enter a value for the sounding reference signal bandwidth (B_SRS). See 3GPP TS 36.211.

There is a relation among SRS Bandwidth (B_SRS), SRS Hopping Bandwidth (b_hop) and Frequency Hopping.

Frequency Hopping On: (b_hop) < (B_SRS)

Frequency Hopping Off: (b_hop) >= (B_SRS)

SCPI Command	[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<carrier>:ULINk:SRS:BANDwidth\|BWIDth <integer> [:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<carrier>:ULINk:SRS:BANDwidth\|BWIDth?
SCPI Example	:RAD:LTEF:WAV:CCAR:ULIN:SRS:BAND 1 :RAD:LTEF:WAV:CCAR:ULIN:SRS:BAND?
Notes	BWIDth SCPI node is an alias of BANDwidth.
State Saved	Yes
Preset	0
Min	0
Max	3
Initial S/W Revision	A.14.00

Transmission Comb (kTC)

Sets a value for the sounding reference signal transmission comb (kTC). See 3GPP TS 36.211.

SCPI Command	[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<carrier>:ULINk:SRS:TCOMb <integer> [:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<carrier>:ULINk:SRS:TCOMb?
SCPI Example	:RAD:LTEF:WAV:CCAR:ULIN:SRS:TCOM 1 :RAD:LTEF:WAV:CCAR:ULIN:SRS:TCOM?
State Saved	Yes
Preset	0
Min	0
Max	1
Initial S/W Revision	A.14.00

Hopping Bandwidth (b_hop)

Sets a value for the sounding reference signal hopping bandwidth (b_hop). See 3GPP TS 36.211.

There is a relation among SRS Bandwidth (B_SRS), SRS Hopping Bandwidth (b_hop) and Frequency Hopping.

Frequency Hopping On: (b_hop) < (B_SRS)

Frequency Hopping Off: (b_hop) >= (B_SRS)

SCPI Command	[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<carrier>:ULINk:SRS:HOPPing:BANDwidth\|BWIDth <integer> [:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<carrier>:ULINk:SRS:HOPPing:BANDwidth\|BWIDth?
SCPI Example	:RAD:LTEF:WAV:CCAR:ULIN:SRS:HOPP:BAND 1 :RAD:LTEF:WAV:CCAR:ULIN:SRS:HOPP:BAND?
Notes	BWIDth SCPI node is an alias of BANDwidth.
State Saved	Yes
Preset	3
Min	0
Max	3
Initial S/W Revision	A.14.00

Frequency Domain Position (nRRC)

Sets a value for the sounding reference signal frequency domain position (nRRC). See 3GPP TS 36.211.

SCPI Command	[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<carrier>:ULINk:SRS:FDOMain:POSition <integer> [:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<carrier>:ULINk:SRS:FDOMain:POSition
SCPI Example	:RAD:LTEF:WAV:CCAR:ULIN:SRS:FDOM:POS 1 :RAD:LTEF:WAV:CCAR:ULIN:SRS:FDOM:POS?
State Saved	Yes
Preset	0
Min	0
Max	23
Initial S/W Revision	A.14.00

Frequency Hopping

This is read only parameter and automatically decided as below.

There is a relation among SRS Bandwidth (B_SRS), SRS Hopping Bandwidth (b_hop) and Frequency Hopping.

Frequency Hopping On: (b_hop) < (B_SRS)

Frequency Hopping Off: (b_hop) >= (B_SRS)

SCPI Command	[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<carrier>:ULINk:SRS:FHOPping[:STATe]?
SCPI Example	:RAD:LTEF:WAV:CCAR:ULIN:SRS:FHOP?
Notes	Query only
State Saved	Yes
Preset	0
Initial S/W Revision	A.14.00

Time Domain Resources

Auto-Subframe Configuration

Sets the state of the auto-subframe configuration on or off.

SCPI Command	[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<carrier>:ULINk:SRS:SFRame:CONFig:AUTO[:STATe] OFF\|ON\|0\|1 [:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<carrier>:ULINk:SRS:SFRame:CONFig:AUTO[:STATe]?
SCPI Example	:RAD:LTEF:WAV:CCAR:ULIN:SRS:SFR:CONF:AUTO 1 :RAD:LTEF:WAV:CCAR:ULIN:SRS:SFR:CONF:AUTO?
State Saved	Yes
Preset	ON
Initial S/W Revision	A.14.00

Subframe Configuration

Sets a value for the sounding reference signal subframe configuration. See 3GPP TS 36.211.

This parameter is editable only when Auto-Subframe Configuration is on.

SCPI Command	[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<carrier>:ULINk:SRS:SFRame:CONFig <integer> [:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<carrier>:ULINk:SRS:SFRame:CONFig?
SCPI Example	:RAD:LTEF:WAV:CCAR:ULIN:SRS:SFR:CONF 10 :RAD:LTEF:WAV:CCAR:ULIN:SRS:SFR:CONF?
State Saved	Yes
Preset	0
Min	0
Max	14
Initial S/W Revision	A.14.00

Configuration Index (I_SRS)

Sets a value for the sounding reference signal configuration index (I_SRS). See 3GPP TS 36.211.

SCPI Command	[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<carrier>:ULINk:SRS:CINDex <integer> [:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<carrier>:ULINk:SRS:CINDex?
SCPI Example	:RAD:LTEF:WAV:CCAR:ULIN:SRS:CIND 1 :RAD:LTEF:WAV:CCAR:ULIN:SRS:CIND?
State Saved	Yes
Preset	0
Min	0
Max	636
Initial S/W Revision	A.14.00

Cell Specific SRS Subframes

Sets the numbers of individual subframes, separated by commas (for example 0,1,2,3) or a range of subframes (for example 0-3) to assign the sounding reference signal to specific subframes.

This parameter is editable only when Auto-Subframe Configuration is off.

Otherwise, it's read-only and automatically decided by Subframe Configuration.

See 3GPP TS 36.211 5.5.3.3 for more information.

SCPI Command	[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<carrier>:ULINk:SRS:CSPecific:SFRame <string> [:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<carrier>:ULINk:SRS:CSPecific:SFRame?
SCPI Example	:RAD:LTEF:WAV:CCAR:ULIN:SRS:CSP:SFR "1" :RAD:LTEF:WAV:CCAR:ULIN:SRS:CSP:SFR?
State Saved	Yes
Preset	"0:9"
Range	Numeric characters: 0 to 9
Initial S/W Revision	A.14.00

Subframe Offset (Toffset)

This command returns the SRS subframe offset of the UE specific sounding reference signals Configuration. Refer to 36.213 Table 8.2-1.

SCPI Command	[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<carrier>:ULINk:SRS:SFRame:OFFSet?
SCPI Example	:RAD:LTEF:WAV:CCAR:ULIN:SRS:SFR:OFFS?
Notes	Query only Returns <integer>
State Saved	No
Preset	0
Min	0
Max
Initial S/W Revision	A.14.00

Periodicity (Tsrs)

This command returns the SRS periodicity of the UE specific sounding reference signals Configuration. Refer to 36.213 Table 8.2-1.

SCPI Command	[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<carrier>:ULINk:SRS:PERiodicity?
SCPI Example	:RAD:LTEF:WAV:CCAR:ULIN:SRS:PER?
Notes	Query only
State Saved	No
Preset	2 ms
Min	2 ms
Max	320 ms
Range	2 ms \| 5 ms \| 10 ms \| 20 ms \| 40 ms \| 80 ms \| 160 ms \| 320 ms This value is depended on Configuration Index (I_SRS).
Initial S/W Revision	A.14.00

Sequence Generation

Cyclic Shift (nSRS_CS)

Sets a real number value for the sounding reference signal cyclic shift (nSRS_CS).

SCPI Command	[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<carrier>:ULINk:SRS:CSHift <integer> [:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<carrier>:ULINk:SRS:CSHift?
SCPI Example	:RAD:LTEF:WAV:CCAR:ULIN:SRS:CSH 1 :RAD:LTEF:WAV:CCAR:ULIN:SRS:CSH?
State Saved	Yes
Preset	0
Min	0
Max	7
Initial S/W Revision	A.14.00