LTE TDD

SRS Uplink

For Real-Time 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:LTETdd:WAVeform:RTIMe:CCARrier<carrier>:ULINk:SRS[:STATe] OFF\|ON\|0\|1 [:SOURce]:RADio:LTETdd:WAVeform:RTIMe:CCARrier<carrier>:ULINk:SRS[:STATe]?
SCPI Example	:RAD:LTET:WAV:RTIM:CCAR:ULIN:SRS OFF :RAD:LTET:WAV:RTIM:CCAR:ULIN:SRS?
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:LTETdd:WAVeform:RTIMe:CCARrier<carrier>:ULINk:SRS:POWer <rel_ampl> [:SOURce]:RADio:LTETdd:WAVeform:RTIMe:CCARrier<carrier>:ULINk:SRS:POWer?
SCPI Example	:RAD:LTET:WAV:RTIM:CCAR:ULIN:SRS:POW 0dB :RAD:LTET:WAV:RTIM:CCAR:ULIN:SRS:POW?
Notes	Unit in GUI: dB
State Saved	Yes
Preset	0 dB
Min	-60 dB
Max	20 dB
Resolution	0.001 dB
Initial S/W Revision	A.14.00

Group/Sequence Hopping [TDD CC]

Sets the hopping type sounding reference signal related to. (See 3GPP TS 36.211)

SCPI Command	[:SOURce]:RADio:LTETdd:WAVeform:RTIMe:CCARrier<carrier>:ULINk:SRS:HOPPing OFF\|GROup\|SEQuence [:SOURce]:RADio:LTETdd:WAVeform:RTIMe:CCARrier<carrier>:ULINk:SRS:HOPPing?
SCPI Example	:RAD:LTET:WAV:RTIM:CCAR:ULIN:SRS:HOPP GRO :RAD:LTET:WAV:RTIM:CCAR:ULIN:SRS:HOPP?
State Saved	Yes
Preset	OFF
Range	Off \| Group Hopping \| Sequence Hopping
Initial S/W Revision	A.14.00

Maximum UpPTS [TDD CC]

Sets the state of the sounding reference signal Max UpPTS on or off.

SCPI Command	[:SOURce]:RADio:LTETdd:WAVeform:RTIMe:CCARrier<carrier>:ULINk:SRS:MUPTs[:STATe] OFF\|ON\|0\|1 [:SOURce]:RADio:LTETdd:WAVeform:RTIMe:CCARrier<carrier>:ULINk:SRS:MUPTs[:STATe]?
SCPI Example	:RAD:LTET:WAV:RTIM:CCAR:ULIN:SRS:MUPT ON :RAD:LTET:WAV:RTIM:CCAR:ULIN:SRS:MUPT?
State Saved	Yes
Preset	OFF
Initial S/W Revision	A.14.00

Number of Format 4 PRACH [TDD CC]

Set the Number of Format 4 PRACH burst allocated in the special subframe, you can set this value to 0, 1, 2, 3, 4 , 5, 6 for each special subframe as described in 3GPP TS 36.211.

SCPI Command	[:SOURce]:RADio:LTETdd:WAVeform:RTIMe:CCARrier<carrier>:ULINk:SRS:NUMBer:F4PRach <string> [:SOURce]:RADio:LTETdd:WAVeform:RTIMe:CCARrier<carrier>:ULINk:SRS:NUMBer:F4PRach?
SCPI Example	:RAD:LTET:WAV:RTIM:CCAR:ULIN:SRS:NUMB:F4PR "0,1" :RAD:LTET:WAV:RTIM:CCAR:ULIN:SRS:NUMB:F4PR?
State Saved	Yes
Preset	"0,0"
Range
Initial S/W Revision	A.14.00

Frequency Domain Resources

Bandwidth Configuration (C_SRS)

Sets the Bandwidth configuration for sounding reference signal.

SCPI Command	[:SOURce]:RADio:LTETdd:WAVeform:RTIMe:CCARrier<carrier>:ULINk:SRS:BWConfig <integer> [:SOURce]:RADio:LTETdd:WAVeform:RTIMe:CCARrier<carrier>:ULINk:SRS:BWConfig?
SCPI Example	:RAD:LTET:WAV:RTIM:CCAR:ULIN:SRS:BWC 1 :RAD:LTET:WAV:RTIM:CCAR:ULIN:SRS:BWC?
State Saved	Yes
Preset	7
Min	0
Max	7
Initial S/W Revision	A.14.00

Bandwidth (B_SRS)

Sets the Bandwidth indicator for sounding reference signal.

SCPI Command	[:SOURce]:RADio:LTETdd:WAVeform:RTIMe:CCARrier<carrier>:ULINk:SRS:BANDwidth\|BWIDth <integer> [:SOURce]:RADio:LTETdd:WAVeform:RTIMe:CCARrier<carrier>:ULINk:SRS:BANDwidth\|BWIDth?
SCPI Example	:RAD:LTET:WAV:RTIM:CCAR:ULIN:SRS:BAND 0 :RAD:LTET:WAV:RTIM: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 the offset value which is related with the transmission comb for sounding reference signal.

SCPI Command	[:SOURce]:RADio:LTETdd:WAVeform:RTIMe:CCARrier<carrier>:ULINk:SRS:TCOMb <integer> [:SOURce]:RADio:LTETdd:WAVeform:RTIMe:CCARrier<carrier>:ULINk:SRS:TCOMb?
SCPI Example	:RAD:LTET:WAV:RTIM:CCAR:ULIN:SRS:TCOM 0 :RAD:LTET:WAV:RTIM: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 the frequency hopping bandwidth of sounding reference signal.

SCPI Command	[:SOURce]:RADio:LTETdd:WAVeform:RTIMe:CCARrier<carrier>:ULINk:SRS:HOPPing:BANDwidth\|BWIDth <integer> [:SOURce]:RADio:LTETdd:WAVeform:RTIMe:CCARrier<carrier>:ULINk:SRS:HOPPing:BANDwidth\|BWIDth?
SCPI Example	:RAD:LTET:WAV:RTIM:CCAR:ULIN:SRS:HOPP:BAND 1 :RAD:LTET:WAV:RTIM: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 the frequency domain position RRC value which is from the upper layer for sounding reference signal.

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

Frequency Hopping

Displays the frequency hopping status of the UE specific sounding reference signals Configuration.

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)

Refer to 36.213V8.5.0 Table 8.2-1

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

Time Domain Resources

Subframe Configuration [TDD CC]

Sets subframe configuration of sounding reference signal.

SCPI Command	[:SOURce]:RADio:LTETdd:WAVeform:RTIMe:CCARrier<carrier>:ULINk:SRS:SFRame:CONFig <integer> [:SOURce]:RADio:LTETdd:WAVeform:RTIMe:CCARrier<carrier>:ULINk:SRS:SFRame:CONFig?
SCPI Example	:RAD:LTET:WAV:RTIM:CCAR:ULIN:SRS:SFR:CONF 1 :RAD:LTET:WAV:RTIM:CCAR:ULIN:SRS:SFR:CONF?
State Saved	Yes
Preset	0
Min	0
Max	13
Initial S/W Revision	A.14.00

Configuration Index (I_SRS)

Sets the configuration Index for sounding reference signal.

SCPI Command	[:SOURce]:RADio:LTETdd:WAVeform:RTIMe:CCARrier<carrier>:ULINk:SRS:CINDex <integer> [:SOURce]:RADio:LTETdd:WAVeform:RTIMe:CCARrier<carrier>:ULINk:SRS:CINDex?
SCPI Example	:RAD:LTET:WAV:RTIM:CCAR:ULIN:SRS:CIND 1 :RAD:LTET:WAV:RTIM:CCAR:ULIN:SRS:CIND?
State Saved	Yes
Preset	0
Min	0
Max	644
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 8.2-2.

SCPI Command	[:SOURce]:RADio:LTETdd:WAVeform:RTIMe:CCARrier<carrier>:ULINk:SRS:SFRame:OFFSet?
SCPI Example	:RAD:LTET:WAV:RTIM:CCAR:ULIN:SRS:SFR:OFFS?
Notes	Query only
State Saved	No
Preset	"0,1"
Min	0
Max
Range
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 8.2-2.

SCPI Command	[:SOURce]:RADio:LTETdd:WAVeform:RTIMe:CCARrier<carrier>:ULINk:SRS:PERiodicity?
SCPI Example	:RAD:LTET:WAV:RTIM: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 the value which is used to calculate the cyclic shift for sounding reference signal.

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