Post on 03-Apr-2015
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3GPP UMTS Long Term EvolutionUplink power control in LTE p pAugust 2009
Andreas RoesslerAndreas.Roessler@rohde-schwarz.com
Technology Manager North America Rohde & Schwarz, GermanyRohde & Schwarz, Germany
Di l iDisclaimer
This presentation contains forward looking statements and milestones. Such statements are based on our current expectations and are subject to certain risks and uncertainties that could negatively affect our delivery roadmap.
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Power control
Uplink power controlWhat's behind?
Power control
sufficient Ebit/N0 to achieve required QoS
uplink interference, maximize battery life
l Characteristic of radio channel with multipath propagation (path loss, shadowing, fast fading) as well as the interference “provided” through other users – both within the same cell and from neighboring cells – needs to be considered to find the balance
August ‘09 | UL power control in LTE | 2
considered to find the balance,
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Some comments on UL power control in LTE…or in other words what is different to 3G (UTRA FDD = WCDMA)?
l SC-FDMA is the UL transmission scheme, so transmission of different UE’s in the same radio cell is (almost) orthogonal by nature, means intra-cell interference is less critical than in WCDMA,
I WCDMA d i i d b l i h di f i i h– In WCDMA data rate is increased by lowering the spreading factor increasing the transmission power increase of intra-cell interference,
– In LTE data rate is increased by varying the allocated bandwidth and the Modulation Coding Scheme (MCS), where the power can remain typically the same for a given MCS butfor a given MCS, but…,
l WCDMA uses periodic power control (0.667ms) normally with a step size of ±1 dB (“fast power control”), where LTE allows larger
t b t t il i di llpower steps, but not necessarily periodically,– LTE uses a combination of open-loop and close-loop for UL power control, as this
is more affordable and requires less feedback (signaling overhead) than WCDMA,– Open-loop is used to set a coarse operating point, where close-loop will be used for
fi t i t t l i t f d t h h l diti
August ‘09 | UL power control in LTE | 3
fine tuning to control interference and match channel conditions,
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What is power controlled in the uplink?Physical channels and signals in the uplink
Path loss
UL interference
Multipath propagation
Physical Uplink Physical UplinkShared Channel (PUSCH)Control Channel (PUCCH)(Demodulation Reference Signal, over entire bandwidth in time slots #3 and #10)
(Demodulation Reference Signal,occupied time slot position depends
Sounding Reference Signals (SRS)[optional]
August ‘09 | UL power control in LTE | 4
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Physical channels and signals in the uplinkPUSCH, PUCCH, DMRS, SRS in the time-frequency domain
Demodulation Reference Signals (DMRS)for PUSCH and PUCCH
Physical Uplink Control Channel (PUCCH)issued by UE3 and UE4
Time1 subframe (1 ms) = 2 Time Slots
7 SC-FDMA symbols(normal cyclic prefix)
Physical Uplink Shared Channel (PUSCH)used by UE1 and UE2
Sounding Reference
Signals (SRS)issued by UE1 and UE2
Slot #0 Slot #1 Slot #2 Slot #3
Frequency
e.g. 50 RB = 10 MHz channel bandwidth
August ‘09 | UL power control in LTE | 5
Screenshot taken from R&S® SMU200A Vector Signal Generator
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PUSCH power controlPhysical Uplink Shared Channel
l Power level [dBm] of PUSCH is calculated every subframe i based on the following formula out of TS 36.213 V8.7.0 (June ’09 baseline),
August ‘09 | UL power control in LTE | 6
1) +23 dBm is maximum allowed power in LTE according to TS 36.101, corresponding to power class 3bis in WCDMA
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PUSCH power controlPhysical Uplink Shared Channel
l Power level [dBm] of PUSCH is calculated every subframe i based on the following formula out of TS 36.213 V8.7.0 (June ’09 baseline),
Transmit power for PUSCH in subframe i in dBm
August ‘09 | UL power control in LTE | 7
1) +23 dBm is maximum allowed power in LTE according to TS 36.101, corresponding to power class 3bis in WCDMA
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PUSCH power controlPhysical Uplink Shared Channel
l Power level [dBm] of PUSCH is calculated every subframe i based on the following formula out of TS 36.213 V8.7.0 (June ’09 baseline),
Maximum allowed UE powerMaximum allowed UE power in this particular cell,
but at maximum +23 dBm1)
Transmit power for PUSCH in subframe i in dBm
August ‘09 | UL power control in LTE | 8
1) +23 dBm is maximum allowed power in LTE according to TS 36.101, corresponding to power class 3bis in WCDMA
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PUSCH power controlPhysical Uplink Shared Channel
l Power level [dBm] of PUSCH is calculated every subframe i based on the following formula out of TS 36.213 V8.7.0 (June ’09 baseline),
Maximum allowed UE powerMaximum allowed UE power in this particular cell,
but at maximum +23 dBm1)
Number of allocated resource blocks (RB)
Transmit power for PUSCH in subframe i in dBm
August ‘09 | UL power control in LTE | 9
1) +23 dBm is maximum allowed power in LTE according to TS 36.101, corresponding to power class 3bis in WCDMA
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PUSCH power controlPhysical Uplink Shared Channel
l Power level [dBm] of PUSCH is calculated every subframe i based on the following formula out of TS 36.213 V8.7.0 (June ’09 baseline),
Maximum allowed UE powerMaximum allowed UE power in this particular cell,
but at maximum +23 dBm1)Combination of cell- and UE-specific
components configured by L3
Number of allocated resource blocks (RB)
Transmit power for PUSCH in subframe i in dBm
August ‘09 | UL power control in LTE | 10
1) +23 dBm is maximum allowed power in LTE according to TS 36.101, corresponding to power class 3bis in WCDMA
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PUSCH power controlPhysical Uplink Shared Channel
l Power level [dBm] of PUSCH is calculated every subframe i based on the following formula out of TS 36.213 V8.7.0 (June ’09 baseline),
Maximum allowed UE powerMaximum allowed UE power in this particular cell,
but at maximum +23 dBm1)Combination of cell- and UE-specific
components configured by L3
Number of allocated resource blocks (RB)
Cell-specific parameter
configured by L3Transmit power for PUSCH configured by L3in subframe i in dBm
August ‘09 | UL power control in LTE | 11
1) +23 dBm is maximum allowed power in LTE according to TS 36.101, corresponding to power class 3bis in WCDMA
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PUSCH power controlPhysical Uplink Shared Channel
l Power level [dBm] of PUSCH is calculated every subframe i based on the following formula out of TS 36.213 V8.7.0 (June ’09 baseline),
Maximum allowed UE powerMaximum allowed UE power in this particular cell,
but at maximum +23 dBm1)Combination of cell- and UE-specific
components configured by L3
Number of allocated resource blocks (RB)
Cell-specific parameter
configured by L3Transmit power for PUSCH
Downlink path loss estimateconfigured by L3
in subframe i in dBm
August ‘09 | UL power control in LTE | 12
1) +23 dBm is maximum allowed power in LTE according to TS 36.101, corresponding to power class 3bis in WCDMA
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PUSCH power controlPhysical Uplink Shared Channel
l Power level [dBm] of PUSCH is calculated every subframe i based on the following formula out of TS 36.213 V8.7.0 (June ’09 baseline),
Maximum allowed UE powerMaximum allowed UE power in this particular cell,
but at maximum +23 dBm1)Combination of cell- and UE-specific
components configured by L3PUSCH transport
format
Number of allocated resource blocks (RB)
Cell-specific parameter
configured by L3Transmit power for PUSCH
Downlink path loss estimateconfigured by L3
in subframe i in dBm
August ‘09 | UL power control in LTE | 13
1) +23 dBm is maximum allowed power in LTE according to TS 36.101, corresponding to power class 3bis in WCDMA
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PUSCH power controlPhysical Uplink Shared Channel
l Power level [dBm] of PUSCH is calculated every subframe i based on the following formula out of TS 36.213 V8.7.0 (June ’09 baseline),
Maximum allowed UE powerMaximum allowed UE power in this particular cell,
but at maximum +23 dBm1)Combination of cell- and UE-specific
components configured by L3PUSCH transport
format
Number of allocated resource blocks (RB)
Cell-specific parameter
configured by L3Transmit power for PUSCH
Power control adjustment derived from TPC command
Downlink path loss estimateconfigured by L3
in subframe i in dBm received in subframe (i-4)
August ‘09 | UL power control in LTE | 14
1) +23 dBm is maximum allowed power in LTE according to TS 36.101, corresponding to power class 3bis in WCDMA
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PUSCH power controlPhysical Uplink Shared Channel
l Power level [dBm] of PUSCH is calculated every subframe i based on the following formula out of TS 36.213 V8.7.0 (June ’09 baseline),
Maximum allowed UE powerMaximum allowed UE power in this particular cell,
but at maximum +23 dBm1)Combination of cell- and UE-specific
components configured by L3PUSCH transport
format
Number of allocated resource blocks (RB)
Cell-specific parameter
configured by L3Transmit power for PUSCH
Power control adjustment derived from TPC command
Downlink path loss estimateconfigured by L3
in subframe i in dBm received in subframe (i-4)
Bandwidth factor
August ‘09 | UL power control in LTE | 15
Bandwidth factor1) +23 dBm is maximum allowed power in LTE according to TS 36.101, corresponding to power class 3bis in WCDMA
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PUSCH power controlPhysical Uplink Shared Channel
l Power level [dBm] of PUSCH is calculated every subframe i based on the following formula out of TS 36.213 V8.7.0 (June ’09 baseline),
Maximum allowed UE powerMaximum allowed UE power in this particular cell,
but at maximum +23 dBm1)Combination of cell- and UE-specific
components configured by L3PUSCH transport
format
Number of allocated resource blocks (RB)
Cell-specific parameter
configured by L3Transmit power for PUSCH
Power control adjustment derived from TPC command
Downlink path loss estimate
Basic open-loop starting point
configured by L3in subframe i in dBm received in subframe (i-4)
Bandwidth factor
August ‘09 | UL power control in LTE | 16
Basic open-loop starting pointBandwidth factor1) +23 dBm is maximum allowed power in LTE according to TS 36.101, corresponding to power class 3bis in WCDMA
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PUSCH power controlPhysical Uplink Shared Channel
l Power level [dBm] of PUSCH is calculated every subframe i based on the following formula out of TS 36.213 V8.7.0 (June ’09 baseline),
Maximum allowed UE powerMaximum allowed UE power in this particular cell,
but at maximum +23 dBm1)Combination of cell- and UE-specific
components configured by L3PUSCH transport
format
Number of allocated resource blocks (RB)
Cell-specific parameter
configured by L3Transmit power for PUSCH
Power control adjustment derived from TPC command
Downlink path loss estimate
Dynamic offset (closed loop)Basic open-loop starting point
configured by L3in subframe i in dBm received in subframe (i-4)
Bandwidth factor
August ‘09 | UL power control in LTE | 17
Dynamic offset (closed loop)Basic open-loop starting pointBandwidth factor1) +23 dBm is maximum allowed power in LTE according to TS 36.101, corresponding to power class 3bis in WCDMA
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PUSCH power controlPCMAX
l PCMAX=min{PEMAX; PUMAX}l PEMAX is the maximum allowed
power for this particular radio cell configured by higher layers andconfigured by higher layers and corresponds to P-MAX information element (IE) provided in SIB Type 1,
l PUMAX is the maximum UE power, defined as +23 dBm ± 2dB corresponding to power class 3bis in WCDMAto power class 3bis in WCDMA, – Based on higher order modulation schemes and used transmission bandwidth a
Maximum Power Reduction (MPR) is applied and the UE maximum transmission power is further reduced (see TS 36.101, table 6.2.3-1),
– Network signaling (NS 0x) might be used in a cell to further reduce maximum UE
August ‘09 | UL power control in LTE | 18
– Network signaling (NS_0x) might be used in a cell to further reduce maximum UE transmission power (= Additional MPR (A-MPR); see TS 36.101, Table 6.2.4-1)
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PUSCH power controlMPUSCH
l Power calculation depends also on allocated resource blocks for uplink data transmission, l Number of RB depends on configured bandwidth, but further not each
b f RB i it bl ll tinumber of RB is a suitable allocation,l DCI format 0 and resource allocation type 2 is used to allocated resource
blocks to the UE– Resource allocation type 2 means in general allocation of contiguously RB, – Resource Indication Value (RIV) is signaled to the UE, calculated as follows:
⎣ ⎦)1(
2/)1(
STARTCRBsULRB
ULRBCRBs
elseRBLNRIV
thenNL
+−=
≤−
)1()1(
)(
STARTULRBCRBs
ULRB
ULRB
STARTCRBsRB
RBNLNNRIV −−++−=ULRB
PUSCHRB
532 532 NM ≤⋅⋅= ααα
August ‘09 | UL power control in LTE | 19
– where α2, α3 and α5 are any integer value,
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PUSCH power controlMPUSCH
l Power calculation depends also on allocated resource blocks for uplink data transmission, l Number of RB depends on configured bandwidth, but further not each
b f RB i it bl ll tinumber of RB is a suitable allocation,l DCI format 0 and resource allocation type 2 is used to allocated resource
blocks to the UE– Resource allocation type 2 means in general allocation of contiguously RB, – Resource Indication Value (RIV) is signaled to the UE, calculated as follows:
⎣ ⎦)1(
2/)1(
STARTCRBsULRB
ULRBCRBs
elseRBLNRIV
thenNL
+−=
≤−
# of allocated RB,
)1()1(
)(
STARTULRBCRBs
ULRB
ULRB
STARTCRBsRB
RBNLNNRIV −−++−=ULRB
PUSCHRB
532 532 NM ≤⋅⋅= ααα
# of allocated RB, e.g. 27 RB,…
August ‘09 | UL power control in LTE | 20
– where α2, α3 and α5 are any integer value,
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PUSCH power controlMPUSCH
l Power calculation depends also on allocated resource blocks for uplink data transmission, l Number of RB depends on configured bandwidth, but further not each
b f RB i it bl ll tinumber of RB is a suitable allocation,l DCI format 0 and resource allocation type 2 is used to allocated resource
blocks to the UE– Resource allocation type 2 means in general allocation of contiguously RB, – Resource Indication Value (RIV) is signaled to the UE, calculated as follows:
⎣ ⎦)1(
2/)1(
STARTCRBsULRB
ULRBCRBs
elseRBLNRIV
thenNL
+−=
≤−
# of allocated RB,
Bandwidth, e.g. 10 MHz = 50 RB
Offset in # of RB, e.g. 15 RB
)1()1(
)(
STARTULRBCRBs
ULRB
ULRB
STARTCRBsRB
RBNLNNRIV −−++−=ULRB
PUSCHRB
532 532 NM ≤⋅⋅= ααα
# of allocated RB, e.g. 27 RB,…
August ‘09 | UL power control in LTE | 21
– where α2, α3 and α5 are any integer value,
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PUSCH power controlMPUSCH
l Power calculation depends also on allocated resource blocks for uplink data transmission, l Number of RB depends on configured bandwidth, but further not each
b f RB i it bl ll tinumber of RB is a suitable allocation,l DCI format 0 and resource allocation type 2 is used to allocated resource
blocks to the UE– Resource allocation type 2 means in general allocation of contiguously RB, – Resource Indication Value (RIV) is signaled to the UE, calculated as follows:
⎣ ⎦)1(
2/)1(
STARTCRBsULRB
ULRBCRBs
elseRBLNRIV
thenNL
+−=
≤−
# of allocated RB,
Bandwidth, e.g. 10 MHz = 50 RB
Offset in # of RB, e.g. 15 RB
)1()1(
)(
STARTULRBCRBs
ULRB
ULRB
STARTCRBsRB
RBNLNNRIV −−++−=ULRB
PUSCHRB
532 532 NM ≤⋅⋅= ααα
# of allocated RB, e.g. 27 RB,…
…must fulfill this requirement!
August ‘09 | UL power control in LTE | 22
– where α2, α3 and α5 are any integer value,
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PUSCH power control P0_PUSCH(j)
l P0_PUSCH(j) is a combination of cell- and UE-specific components, configured by higher layers1):l P0_PUSCH(j) = P0_NOMINAL_PUSCH(j) + P0_UE_PUSCH(j), j = {0, 1},
August ‘09 | UL power control in LTE | 23
1) see next slide(s) respectively TS 36.331 V8.6.0 Radio Resource Control specification
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PUSCH power control P0_PUSCH(j)
l P0_PUSCH(j) is a combination of cell- and UE-specific components, configured by higher layers1):l P0_PUSCH(j) = P0_NOMINAL_PUSCH(j) + P0_UE_PUSCH(j), j = {0, 1},
– P0_NOMINAL_PUSCH(j) in the range of -126…+24 dBm is used to have different BLER operating points to achieve lower probability of retransmissions,
August ‘09 | UL power control in LTE | 24
1) see next slide(s) respectively TS 36.331 V8.6.0 Radio Resource Control specification
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PUSCH power control P0_PUSCH(j)
l P0_PUSCH(j) is a combination of cell- and UE-specific components, configured by higher layers1):l P0_PUSCH(j) = P0_NOMINAL_PUSCH(j) + P0_UE_PUSCH(j), j = {0, 1},
Full path loss compensation is considered….
– P0_NOMINAL_PUSCH(j) in the range of -126…+24 dBm is used to have different BLER operating points to achieve lower probability of retransmissions,
August ‘09 | UL power control in LTE | 25
1) see next slide(s) respectively TS 36.331 V8.6.0 Radio Resource Control specification
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PUSCH power control P0_PUSCH(j)
l P0_PUSCH(j) is a combination of cell- and UE-specific components, configured by higher layers1):l P0_PUSCH(j) = P0_NOMINAL_PUSCH(j) + P0_UE_PUSCH(j), j = {0, 1},
Full path loss compensation is considered……no path loss compensation is used.
– P0_NOMINAL_PUSCH(j) in the range of -126…+24 dBm is used to have different BLER operating points to achieve lower probability of retransmissions,
August ‘09 | UL power control in LTE | 26
1) see next slide(s) respectively TS 36.331 V8.6.0 Radio Resource Control specification
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PUSCH power control P0_PUSCH(j)
l P0_PUSCH(j) is a combination of cell- and UE-specific components, configured by higher layers1):l P0_PUSCH(j) = P0_NOMINAL_PUSCH(j) + P0_UE_PUSCH(j), j = {0, 1},
Full path loss compensation is considered……no path loss compensation is used.
– P0_NOMINAL_PUSCH(j) in the range of -126…+24 dBm is used to have different BLER operating points to achieve lower probability of retransmissions,
– P0_UE_PUSCH(j) in the range of -8…7 dB is used by the eNB to compensate systematic offsets in the UE’s transmission power settings arising from a wrongly estimated path lossestimated path loss,
August ‘09 | UL power control in LTE | 27
1) see next slide(s) respectively TS 36.331 V8.6.0 Radio Resource Control specification
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PUSCH power control P0_PUSCH(j)
l P0_PUSCH(j) is a combination of cell- and UE-specific components, configured by higher layers1):l P0_PUSCH(j) = P0_NOMINAL_PUSCH(j) + P0_UE_PUSCH(j), j = {0, 1},
Full path loss compensation is considered……no path loss compensation is used.
– P0_NOMINAL_PUSCH(j) in the range of -126…+24 dBm is used to have different BLER operating points to achieve lower probability of retransmissions,
– P0_UE_PUSCH(j) in the range of -8…7 dB is used by the eNB to compensate systematic offsets in the UE’s transmission power settings arising from a wrongly estimated path lossestimated path loss,
l j = 0 for semi-persistent scheduling (SPS), j = 1 for dynamic scheduling,
August ‘09 | UL power control in LTE | 28
1) see next slide(s) respectively TS 36.331 V8.6.0 Radio Resource Control specification
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PUSCH power control P0_PUSCH(j)
l P0_PUSCH(j) is a combination of cell- and UE-specific components, configured by higher layers1):l P0_PUSCH(j) = P0_NOMINAL_PUSCH(j) + P0_UE_PUSCH(j), j = {0, 1},
Full path loss compensation is considered……no path loss compensation is used.
– P0_NOMINAL_PUSCH(j) in the range of -126…+24 dBm is used to have different BLER operating points to achieve lower probability of retransmissions,
– P0_UE_PUSCH(j) in the range of -8…7 dB is used by the eNB to compensate systematic offsets in the UE’s transmission power settings arising from a wrongly estimated path lossestimated path loss,
l j = 0 for semi-persistent scheduling (SPS), j = 1 for dynamic scheduling, l j = 2 for transmissions corresponding to the retransmission of the random
access response,F j 2 P (2) 0 d P (2) P ∆– For j = 2: P0_UE_PUSCH(2) = 0 and P0_NOMINAL_PUSCH(2) = P0_PRE + ∆PREAMBLE_Msg3, where P0_PRE and ∆PREAMBLE_Msg3 are provided by higher layers,
August ‘09 | UL power control in LTE | 29
1) see next slide(s) respectively TS 36.331 V8.6.0 Radio Resource Control specification
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PUSCH power control P0_PUSCH(j)
l P0_PUSCH(j) is a combination of cell- and UE-specific components, configured by higher layers1):l P0_PUSCH(j) = P0_NOMINAL_PUSCH(j) + P0_UE_PUSCH(j), j = {0, 1},
Full path loss compensation is considered……no path loss compensation is used.
– P0_NOMINAL_PUSCH(j) in the range of -126…+24 dBm is used to have different BLER operating points to achieve lower probability of retransmissions,
– P0_UE_PUSCH(j) in the range of -8…7 dB is used by the eNB to compensate systematic offsets in the UE’s transmission power settings arising from a wrongly estimated path lossestimated path loss,
l j = 0 for semi-persistent scheduling (SPS), j = 1 for dynamic scheduling, l j = 2 for transmissions corresponding to the retransmission of the random
access response,F j 2 P (2) 0 d P (2) P ∆– For j = 2: P0_UE_PUSCH(2) = 0 and P0_NOMINAL_PUSCH(2) = P0_PRE + ∆PREAMBLE_Msg3, where P0_PRE and ∆PREAMBLE_Msg3 are provided by higher layers,– P0_PRE is understood as Preamble Initial Received Target Power provided by higher layers
and is in the range of -120…-90 dBm,– ∆PREAMBLE Msg3 is in the range of -1…6, where the signaled integer value is multiplied by 2 and
August ‘09 | UL power control in LTE | 30
PREAMBLE_Msg3is than the actual power value in dB,
1) see next slide(s) respectively TS 36.331 V8.6.0 Radio Resource Control specification
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PUSCH power control P0_PUSCH(j)
l UplinkPowerControl IE contains the required information about P0_Nominal_PUSCH, P0_UE_PUSCH, ∆PREAMBLE_Msg3 are part of RadioResourceConfigCommon,
l Via RadioResourceConfigCommon the terminal gets also access to RACH-ConfigCommon to extract from there information like Preamble Initial Received Target Power (P0_PRE),
l RadioResourceConfigCommon IE is part of System Information Block Type 2(SIB Type 2),– System information (SI) in LTE are organized in System Information Blocks and are
grouped in SI Messages when they do have same periodicity, – In contrast to WCDMA SI are not signaled on a dedicated channel, instead the
shared channel transmission principle is used and they are transmitted on PDSCH,– SIB Type contains at all information about shared and common channels and is
therefore part of each SI message and listed as first entry
August ‘09 | UL power control in LTE | 31
therefore part of each SI message and listed as first entry,
32
PUSCH power control α(j) and PL
l Path loss (PL) is estimated by measuring the power level (Reference Signal Receive Power, RSRP) of the cell-specific downlink reference signals (DLRS) and subtracting the measured value from the transmit power level of the DLRS provided by higher layersthe DLRS provided by higher layers,– SIB Type 2 RadioResourceConfigCommon PDSCH-ConfigCommon,
August ‘09 | UL power control in LTE | 32
33
PUSCH power control α(j) and PL
l Path loss (PL) is estimated by measuring the power level (Reference Signal Receive Power, RSRP) of the cell-specific downlink reference signals (DLRS) and subtracting the measured value from the transmit power level of the DLRS provided by higher layersthe DLRS provided by higher layers,– SIB Type 2 RadioResourceConfigCommon PDSCH-ConfigCommon,
l α(j) is used as path-loss compensation factor as a trade-off between total uplink capacity and cell edge data rateuplink capacity and cell-edge data rate, – Full path-loss compensation maximizes fairness for cell-edge UE’s,– Partial path-loss compensation may increase total system capacity, as less
resources are spent ensuring the success of transmissions from cell-edge UEs and less inter-cell interference is caused to neighboring cellsless inter-cell interference is caused to neighboring cells,– For α(j=0, 1) can be 0, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9 and 1.0, where 0.7 or 0.8 give a close-to-
maximum system capacity by providing an acceptable cell-edge performance,– For α(j=2) = 1.0,
August ‘09 | UL power control in LTE | 33
34
PUSCH power control ∆TF(i)
l ∆TF(i) can be first seen as MCS-dependent component in the power control as it depends in the end on number of code blocks respectively
TF 10( ) 10log ((2 1) )SMPR K PUSCHoffseti β⋅Δ = −
K status is signaledby higher layers
(SIB Type 2RadioResourceConfigCommon
UplinkPowerControl),
bits per code blocks, which translates to a specific MCS,
l MCS the UE uses is under control of the eNB
Signaled by DCI format 0 on PDCCH
No?
Yes, than K=1.25
∆TF(i)=0Is K enabled?
– Signaled by DCI format 0 on PDCCH, parameter can be understood as another way to control the power: when the MCS is changed, the power will increase or decrease,
l For the case that control information
control informationwithout UL-SCH data
only UL-SCH dataWhat is transmitted on PUSCH? 1
1
0
=
=∑−
=
β PUSCH
offset
C
rREr NKMPR
l For the case that control information are send instead of user data (= “Aperiodic CQI reporting”), which is signaled by a specific bit in the UL scheduling grant, power offset are set b hi h l ( t lid )
When “a-periodic CQI/PMI/RI reporting” is configured
(see TS 36.213, section 7.2.1and TS 36.212, section 5.3.3.1.1)
OCQI Number of CQI bits incl. CRC bitsN Resource Elements
ββ CQI
offset
PUSCH
offset
RECQI NOMPR
=
=
August ‘09 | UL power control in LTE | 34
by higher layers (see next slide), NRE Resource ElementsC Number of code blocks,Kr Size of code block r,
35
PUSCH power control ∆TF(i), when aperiodic CQI reporting is configured
l is signaled by higher layers to the UE and is part of the system information,l SIB Type 2 RadioResourceConfigCommon
0 reserved
1 reserved
CQIoffsetI CQI
offsetββ CQI
offset
l SIB Type 2 RadioResourceConfigCommon PUSCH-ConfigCommon,
l can take one out of 16 values in [dB] (see table)
2 1.125
3 1.250
4 1.375
5 1.625
6 1 750
β CQI
offset
(see table), 6 1.750
7 2.000
8 2.250
9 2.500
10 2 87510 2.875
11 3.125
12 3.500
13 4.000
14 5.000
August ‘09 | UL power control in LTE | 35
14 5.000
15 6.250
36
PUSCH power control f(i)
l f(i) is the other component of the dynamic offset, UE-specific Transmit Power Control (TPC) commands, signaled with the uplink scheduling grant (PDCCH DCI format 0); two modes are defined: accumulative and absolute,
August ‘09 | UL power control in LTE | 36
37
PUSCH power control f(i)
l f(i) is the other component of the dynamic offset, UE-specific Transmit Power Control (TPC) commands, signaled with the uplink scheduling grant (PDCCH DCI format 0); two modes are defined: accumulative and absolute,
l Accumulative TPC commands (for PUSCH PUCCH SRS)l Accumulative TPC commands (for PUSCH, PUCCH, SRS).– Power step relative to previous step, comparable with close-loop power control in
WCDMA, difference available step sizes, which are δPUSCH={±1 dB or -1, 0, +1, +3 dB} for LTE, larger power steps can be achieved by combining TPC- and MCS-dependent power control, Activated at all by dedicated RRC signaling, disabled p p y g gwhen minimum (-40 dBm) or maximum power (+23 dBm) is reached,
– , where KPUSCH = 4 for FDD and depends on the UL-DL configuration for TD-LTE (see TS 36.213, table 5.1.1.1-1)
)()1()( PUSCHPUSCH Kiifif −+−= δ
August ‘09 | UL power control in LTE | 37
38
PUSCH power control f(i)
l f(i) is the other component of the dynamic offset, UE-specific Transmit Power Control (TPC) commands, signaled with the uplink scheduling grant (PDCCH DCI format 0); two modes are defined: accumulative and absolute,
l Accumulative TPC commands (for PUSCH PUCCH SRS)l Accumulative TPC commands (for PUSCH, PUCCH, SRS).– Power step relative to previous step, comparable with close-loop power control in
WCDMA, difference available step sizes, which are δPUSCH={±1 dB or -1, 0, +1, +3 dB} for LTE, larger power steps can be achieved by combining TPC- and MCS-dependent power control, Activated at all by dedicated RRC signaling, disabled p p y g gwhen minimum (-40 dBm) or maximum power (+23 dBm) is reached,
– , where KPUSCH = 4 for FDD and depends on the UL-DL configuration for TD-LTE (see TS 36.213, table 5.1.1.1-1),
l Absolute TPC commands (for PUSCH only).
)()1()( PUSCHPUSCH Kiifif −+−= δ
– Power step of {-4, -1, +1, +4 dB} relative to the basic operating point ( set by PO_PUSCH(j)+α(j)·PL; see previous slides),
– , where KPUSCH=4 for FDD and depends on the UL-DL configuration for TD-LTE (see TS 36.213, table 5.1.1.1-1),
)()( PUSCHPUSCH Kiif −= δ
August ‘09 | UL power control in LTE | 38
39
PUSCH power controlContext
Physical UplinkShared Channel (PUSCH)
Physical Downlink Control Channel (PDCCH)(use DCI format 0 to assign resources for data transmission)
August ‘09 | UL power control in LTE | 39
40
PUSCH power controlContext
Physical UplinkShared Channel (PUSCH)
Physical Downlink Control Channel (PDCCH)(use DCI format 0 to assign resources for data transmission)
August ‘09 | UL power control in LTE | 40
41
PUSCH power controlUL scheduling grant (= PDCCH DCI format 0)
TPC commands(δPUSCH)
l TPC command for scheduled PUSCH – 2 bit,
– Transmit Power Control (TPC) command for adapting the transmit power on PUSCH,
l Flag for format 0 and 1A differentiation – 1 bit,
– Indicates DCI format to the UE,
l Hopping flag – 1 bitl Cyclic shift for demodulation
reference signal,– Indicates the cyclic shift to use for deriving the
uplink demodulation reference signal from b
l Hopping flag – 1 bit,– Indicates whether uplink frequency
hopping is used or not,
l Resource block assignment and hopping resource allocation, base sequences,
l UL Index – 2 bit,– Indicates the UL subframe where the
scheduling grant has to be applied,
l DL Assignment Index (DAI) 2 bit
pp g ,– Depending on resource allocation type,
l Modulation and coding scheme, redundancy version – 5 bit,
– Indicates modulation scheme and, l DL Assignment Index (DAI) – 2 bit,– Total # of subframes for PDSCH transmission,
l CQI request – 1 bit,– Requests the UE to send a CQI,
,together with the number of allocated physical resource blocks, the TBS,
l New data indicator – 1 bit,– Indicates whether a new
transmission shall be sent
August ‘09 | UL power control in LTE | 41
This bit configuresAPERIODIC
CQI REPORTING
transmission shall be sent,Modulation and Coding
Scheme (MCS)
42
Rohde & Schwarz LTE test solutions (UE)
Interoperabilitytesting
UE Layer 1 /RF Testing
Development ofTx/Rx Modules,
UE ProtocolStack Testing
ProductionTesting
UE SignalingConformance
R&S LTE Portfolio for chipset, component, and UE testing
testingRF TestingTx/Rx Modules,Amplifiers,
RF Components
Stack Testing TestingConformanceTesting
Signal Generator /Fading Simulator /
Signal AnalyzerCMW500
Protocol Testerincluding MLAPITest scenarios
IOT Test CasePackages for
CMW500
CMW500Protocol Testerincluding 3GPP
conformance tests
CMW500non-signaling
productiontester
Signal Generator /Fading Simulator
Field Trials
CMW500
UE PhysicalConformance(RF Testing)
Signal Generator
Virtual testingsoftware onlySMBV100A
SMU200A, AMU200A
TS8980 RF TestSystem for R&D
Radio networkanalyzers incl.ROMES Drive
Test Tools
TS8980RF TestSystem
&RRM TestSystem
SMJ100A orSMBV100A
Signal Analyzer
FSV
software-onlysolutionSignal Analyzer
FSQ/FSG FSV
SMBV100A, …
August ‘09 | UL power control in LTE | 42
System for R&D Test Tools FSVFSQ/FSG, FSV
43
Rohde & Schwarz LTE test solutions (UE)
Interoperabilitytesting
UE Layer 1 /RF Testing
Development ofTx/Rx Modules,
UE ProtocolStack Testing
ProductionTesting
UE SignalingConformance
R&S LTE Portfolio for chipset, component, and UE testing
testingRF TestingTx/Rx Modules,Amplifiers,
RF Components
Stack Testing TestingConformanceTesting
Signal Generator /Fading Simulator /
Signal AnalyzerCMW500
Protocol Testerincluding MLAPITest scenarios
IOT Test CasePackages for
CMW500
CMW500Protocol Testerincluding 3GPP
conformance tests
CMW500non-signaling
productiontester
Signal Generator /Fading Simulator
Field Trials
CMW500
UE PhysicalConformance(RF Testing)
Signal Generator
Virtual testingsoftware onlySMBV100A
SMU200A, AMU200A
TS8980 RF TestSystem for R&D
Radio networkanalyzers incl.ROMES Drive
Test Tools
TS8980RF TestSystem
&RRM TestSystem
SMJ100A orSMBV100A
Signal Analyzer
FSV
software-onlysolutionSignal Analyzer
FSQ/FSG FSV
SMBV100A, …
August ‘09 | UL power control in LTE | 43
System for R&D Test Tools FSVFSQ/FSG, FSV
44
Migration to R&S® CMW500 HW platform
August ‘09 | UL power control in LTE | 44
45
Migration to R&S® CMW500 HW platform
R&S® CRTU-G/WProtocol Test Platform
August ‘09 | UL power control in LTE | 45
46
Migration to R&S® CMW500 HW platformR&S® CMU200R&S® CMU200
Radio Communication Tester
R&S® CRTU-G/WProtocol Test Platform
August ‘09 | UL power control in LTE | 46
47
Migration to R&S® CMW500 HW platformR&S® CMU200R&S® CMU200
Radio Communication Tester
alsoalso
alsoCDMA2000/
1xEV-DO2G/2.5G2G/2.5G
1xEV DO
R&S® CRTU-G/WProtocol Test Platform
Rel-99 Rel-4 Rel-5 Rel-6
August ‘09 | UL power control in LTE | 47
Rel 99 Rel 4 Rel 5 Rel 6
48
Migration to R&S® CMW500 HW platformR&S® CMU200R&S® CMU200
Radio Communication Tester
R&S® CMW500(picture showing configuration as LTE Protocol Test Set)
alsoalso
alsoCDMA2000/
1xEV-DO2G/2.5G2G/2.5G
1xEV DO
R&S® CRTU-G/WProtocol Test Platform
Rel-99 Rel-4 Rel-5 Rel-6
August ‘09 | UL power control in LTE | 48
Rel 99 Rel 4 Rel 5 Rel 6
49
Migration to R&S® CMW500 HW platformOne HW platform configurable as… R&S® CMU200 p g
l Non-signaling production unit – All cellular standards, WiMAX, DVB, etc.
l LTE/HSPA+ Protocol Tester,l LTE/HSPA+ RF Test Set,
R&S® CMU200Radio Communication Tester
,R&S® CMW500
(picture showing configuration as LTE Protocol Test Set)
alsoalso
alsoCDMA2000/
1xEV-DO2G/2.5G2G/2.5G
1xEV DO
R&S® CRTU-G/WProtocol Test Platform
Rel-99 Rel-4 Rel-5 Rel-6
August ‘09 | UL power control in LTE | 49
Rel 99 Rel 4 Rel 5 Rel 6
50
Migration to R&S® CMW500 HW platformOne HW platform configurable as… R&S® CMU200 p g
l Non-signaling production unit – All cellular standards, WiMAX, DVB, etc.
l LTE/HSPA+ Protocol Tester,l LTE/HSPA+ RF Test Set,
R&S® CMU200Radio Communication Tester
,R&S® CMW500
(picture showing configuration as LTE Protocol Test Set)
alsoalso
alsoCDMA2000/
1xEV-DO2G/2.5G2G/2.5G
1xEV DO
Rel-9 Rel-10
l ...as well as future proofed platform for the upcoming challenges…
R&S® CRTU-G/WProtocol Test Platform
Rel-99 Rel-4 Rel-5 Rel-6 Rel-7 Rel-8
August ‘09 | UL power control in LTE | 50
Rel 9 Rel 10Rel 99 Rel 4 Rel 5 Rel 6 Rel 7 Rel 8
51
Parameters are signaled by higher layers
How to test PUSCH power control?Parameters are signaled by higher layers,
a RRCConnectionReconfiguration would be required to change parameters!l PUSCH power reaction on…
l TPC commands (accumulative and absolute), l PUSCH transport format changes, l Content to be transmitted (user data or control information),l Path loss changes (changing DL RS power),
Dynamic offset (closed loop)Basic open-loop starting pointBandwidth factor
August ‘09 | UL power control in LTE | 51
52
How to test power control?PUSCH power control for accumulative TPC commands
2
minimum po er in LTE
August ‘09 | UL power control in LTE | 52
power in LTE
53
How to test power control?PUSCH power control for accumulative TPC commands
TPC Command Field In DCI format 0/3
Accumulated[dB]
0 1
PUSCHδ
0 -1
1 0
2 1
3 3
2
minimum po er in LTE
August ‘09 | UL power control in LTE | 53
power in LTE
54
How to test power control?PUSCH power control for accumulative TPC commands
TPC Command Field In DCI format 0/3
Accumulated[dB]
0 1
PUSCHδ
0 -1
1 0
2 1
3 3
2
minimum po er in LTE
August ‘09 | UL power control in LTE | 54
power in LTE
55
How to test power control?PUSCH power control for accumulative TPC commands
TPC Command Field In DCI format 0/3
Accumulated[dB]
0 1
PUSCHδ
0 -1
1 0
2 1
3 3
2
minimum po er in LTE
August ‘09 | UL power control in LTE | 55
power in LTE
56
How to test power control?PUSCH power control for accumulative TPC commands
TPC Command Field In DCI format 0/3
Accumulated[dB]
0 1
PUSCHδ
0 -1
1 0
2 1
3 3
2
minimum po er in LTE
August ‘09 | UL power control in LTE | 56
power in LTE
57
How to test power control?PUSCH power control for accumulative TPC commands
TPC Command Field In DCI format 0/3
Accumulated[dB]
0 1
PUSCHδ
0 -1
1 0
2 1
3 3
2
minimum po er in LTE
August ‘09 | UL power control in LTE | 57
power in LTE
58
How to test power control?PUSCH power control for accumulative TPC commands
TPC Command Field In DCI format 0/3
Accumulated[dB]
0 1
PUSCHδ
0 -1
1 0
2 1
3 3
2
minimum po er in LTE
August ‘09 | UL power control in LTE | 58
power in LTE
59
How to test power control?PUSCH power control for accumulative TPC commands
TPC Command Field In DCI format 0/3
Accumulated[dB]
0 1
PUSCHδ
0 -1
1 0
2 1
3 3
2
minimum po er in LTE
August ‘09 | UL power control in LTE | 59
power in LTE
60
How to test power control?PUSCH power control for accumulative TPC commands
TPC Command Field In DCI format 0/3
Accumulated[dB]
0 1
PUSCHδ
0 -1
1 0
2 1
3 3
2
minimum po er in LTE
August ‘09 | UL power control in LTE | 60
power in LTE
61
How to test power control?PUSCH power control for absolute TPC commands
TPC Command Field In DCI format 0/3
Absolute [dB]only DCI format 0
PUSCHδ
0 -4
1 -1
2 1
3 4
August ‘09 | UL power control in LTE | 61
62
R&S® CMW500 LTE Protocol TesterPhysical Layer testing, procedure verification – UL power control
R&S® CMW500 LTE Protocol TesterL1 testing PUSCH power control via DCI format 0
August ‘09 | UL power control in LTE | 62
63
R&S® CMW500 LTE Protocol TesterPhysical Layer testing, procedure verification – UL power control
R&S® CMW500 LTE Protocol TesterL1 testing PUSCH power control via DCI format 0
RIV, MCSconfiguration
August ‘09 | UL power control in LTE | 63
64
R&S® CMW500 LTE Protocol TesterPhysical Layer testing, procedure verification – UL power control
R&S® CMW500 LTE Protocol TesterL1 testing PUSCH power control via DCI format 0
RIV, MCSconfiguration
Uplink assignment
table
August ‘09 | UL power control in LTE | 64
65
R&S® CMW500 LTE Protocol TesterPhysical Layer testing, procedure verification – UL power control
R&S® CMW500 LTE Protocol TesterL1 testing PUSCH power control via DCI format 0
TPC
RIV, MCSconfiguration
Uplink configuration assignment
table
August ‘09 | UL power control in LTE | 65
66
R&S® CMW500 LTE Protocol TesterPhysical Layer testing, procedure verification – UL power control
R&S® CMW500 LTE Protocol TesterL1 testing PUSCH power control via DCI format 0
SchedulerTPC
RIV, MCSconfiguration
Uplink (new entry every TTI)configuration assignment
table
August ‘09 | UL power control in LTE | 66
67
R&S® CMW500 LTE Protocol TesterPhysical Layer testing, procedure verification – UL power control
R&S® CMW500 LTE Protocol TesterL1 testing PUSCH power control via DCI format 0
RS, PSS, SSSPBCH transmission
PDCCHtransmission
SchedulerTPC
RIV, MCSconfiguration
Uplink (new entry every TTI)configuration assignment
table
August ‘09 | UL power control in LTE | 67
68
R&S® CMW500 LTE Protocol TesterPhysical Layer testing, procedure verification – UL power control
R&S® CMW500 LTE Protocol TesterL1 testing PUSCH power control via DCI format 0
RS, PSS, SSSPBCH transmission
RFPDCCHtransmission
SchedulerTPC
RIV, MCSconfiguration
Uplink (new entry every TTI)configuration assignment
table
August ‘09 | UL power control in LTE | 68
69
R&S® CMW500 LTE Protocol TesterPhysical Layer testing, procedure verification – UL power control
R&S® CMW500 LTE Protocol TesterL1 testing PUSCH power control via DCI format 0
RS, PSS, SSSPBCH transmission
Device Under Test(DUT; LTE-capable Terminal)
RFPDCCHtransmission
SchedulerTPC
RIV, MCSconfiguration
Uplink )(new entry every TTI)configuration assignment
table
August ‘09 | UL power control in LTE | 69
70
R&S® CMW500 LTE Protocol TesterPhysical Layer testing, procedure verification – UL power control
R&S® CMW500 LTE Protocol TesterL1 testing PUSCH power control via DCI format 0
RS, PSS, SSSPBCH transmission
Device Under Test(DUT; LTE-capable Terminal)
RFPDCCHtransmission
SchedulerTPC
RIV, MCSconfiguration
Uplink )(new entry every TTI)
PUSCHreception
configuration assignmenttable
August ‘09 | UL power control in LTE | 70
71
R&S® CMW500 LTE Protocol TesterPhysical Layer testing, procedure verification – UL power control
R&S® CMW500 LTE Protocol TesterL1 testing PUSCH power control via DCI format 0
RS, PSS, SSSPBCH transmission
Device Under Test(DUT; LTE-capable Terminal)
RFPDCCHtransmission
SchedulerTPC
RIV, MCSconfiguration
Uplink )(new entry every TTI)
PUSCHreception
Evaluate PUSCH power
configuration assignmenttable
August ‘09 | UL power control in LTE | 71
72
R&S® CMW500 LTE Protocol TesterPhysical Layer testing, procedure verification – UL power control
August ‘09 | UL power control in LTE | 72
73
PUSCH power controlTransmit output power ( PUMAX)
l Influences directly inter-cell interference, magnitude of unwanted emissions spectral efficiency,
l Maximum power is defined for power class 3 with 23 dBm ± 2dB,l However the flexibility of the LTE air interface in terms of bandwidth and
modulation requires Maximum Power Reduction (MPR) with using higher order modulation schemes (higher signal peaks) and increasing transmission bandwidth,
ModulationChannel bandwidth / Transmission bandwidth configuration (RB)
MPR (dB)1.4 MHz 3.0 MHz 5 MHz 10 MHz 15 MHz 20MHz
QPSK > 5 > 4 > 8 > 12 > 16 > 18 ≤ 1
16 QAM ≤ 5 ≤ 4 ≤ 8 ≤ 12 ≤ 16 ≤ 18 ≤ 1
16 QAM > 5 > 4 > 8 > 12 > 16 > 18 ≤ 2
l Some 3GPP frequency bands network signaling informs the UE about an additional maximum power reduction (A-MPR) to meet additional requirements (see next slide),
16 QAM > 5 > 4 > 8 > 12 > 16 > 18 ≤ 2
August ‘09 | UL power control in LTE | 73
74
PUSCH power controlTransmit output power ( PUMAX), cont’d.
Network Signalling
value
Requirements (sub-clause)
E-UTRA Band Channel bandwidth (MHz)
Resources Blocks
A-MPR (dB)
A-MPR is required to meet requirements specified in the named sections out of 3GPP TS 36.101 V8.6.0
NS_01 NA NA NA NA NA
NS_03
6.6.2.2.1 2, 4,10, 35, 36 3 >5 ≤ 1
6.6.2.2.1 2, 4,10, 35,36 5 >6 ≤ 1
6.6.2.2.1 2, 4,10, 35,36 10 >6 ≤ 1
6 6 2 2 1 2 4 10 35 36 15 >8 ≤ 16.6.2.2.1 2, 4,10,35,36 15 >8 ≤ 1
6.6.2.2.1 2, 4,10,35, 36 20 >10 ≤ 1
NS_04 6.6.2.2.2 TBD TBD TBD
NS_05 6.6.3.3.1 1 10,15,20 ≥ 50 for QPSK ≤ 1
NS_06 6.6.2.2.3 12, 13, 14, 17 1.4, 3, 5, 10 n/a n/a
NS_07 6.6.2.2.36.6.3.3.2 13 10 Table 6.2.4-2 Table 6.2.4-2
..
NS_32 - - - - -
August ‘09 | UL power control in LTE | 74
75
PUSCH power controlTransmit output power ( PUMAX), cont’d.
Network Signalling
value
Requirements (sub-clause)
E-UTRA Band Channel bandwidth (MHz)
Resources Blocks
A-MPR (dB)
A-MPR is required to meet requirements specified in the named sections out of 3GPP TS 36.101 V8.6.0
NS_01 NA NA NA NA NA
NS_03
6.6.2.2.1 2, 4,10, 35, 36 3 >5 ≤ 1
6.6.2.2.1 2, 4,10, 35,36 5 >6 ≤ 1
6.6.2.2.1 2, 4,10, 35,36 10 >6 ≤ 1
6 6 2 2 1 2 4 10 35 36 15 >8 ≤ 16.6.2.2.1 2, 4,10,35,36 15 >8 ≤ 1
6.6.2.2.1 2, 4,10,35, 36 20 >10 ≤ 1
NS_04 6.6.2.2.2 TBD TBD TBD
NS_05 6.6.3.3.1 1 10,15,20 ≥ 50 for QPSK ≤ 1
NS_06 6.6.2.2.3 12, 13, 14, 17 1.4, 3, 5, 10 n/a n/a
NS_07 6.6.2.2.36.6.3.3.2 13 10 Table 6.2.4-2 Table 6.2.4-2
..
NS_32 - - - - -
August ‘09 | UL power control in LTE | 75
76
PUSCH power controlTransmit output power ( PUMAX), cont’d.
Network Signalling
value
Requirements (sub-clause)
E-UTRA Band Channel bandwidth (MHz)
Resources Blocks
A-MPR (dB)
A-MPR is required to meet requirements specified in the named sections out of 3GPP TS 36.101 V8.6.0
NS_01 NA NA NA NA NA
NS_03
6.6.2.2.1 2, 4,10, 35, 36 3 >5 ≤ 1
6.6.2.2.1 2, 4,10, 35,36 5 >6 ≤ 1
6.6.2.2.1 2, 4,10, 35,36 10 >6 ≤ 1
6 6 2 2 1 2 4 10 35 36 15 >8 ≤ 16.6.2.2.1 2, 4,10,35,36 15 >8 ≤ 1
6.6.2.2.1 2, 4,10,35, 36 20 >10 ≤ 1
NS_04 6.6.2.2.2 TBD TBD TBD
NS_05 6.6.3.3.1 1 10,15,20 ≥ 50 for QPSK ≤ 1
NS_06 6.6.2.2.3 12, 13, 14, 17 1.4, 3, 5, 10 n/a n/a
NS_07 6.6.2.2.36.6.3.3.2 13 10 Table 6.2.4-2 Table 6.2.4-2
..
NS_32 - - - - -
Section 6.6.2 covers ‘Out of band emission’,
August ‘09 | UL power control in LTE | 76
where 6.6.2.2. defines ‘Spectrum Emission Mask (SEM)’and 6.6.2.2.3. the additional SEM requirements for 3GPP Band 13
77
PUSCH power controlTransmit output power ( PUMAX), cont’d.
Network Signalling
value
Requirements (sub-clause)
E-UTRA Band Channel bandwidth (MHz)
Resources Blocks
A-MPR (dB)
A-MPR is required to meet requirements specified in the named sections out of 3GPP TS 36.101 V8.6.0
NS_01 NA NA NA NA NA
NS_03
6.6.2.2.1 2, 4,10, 35, 36 3 >5 ≤ 1
6.6.2.2.1 2, 4,10, 35,36 5 >6 ≤ 1
6.6.2.2.1 2, 4,10, 35,36 10 >6 ≤ 1
6 6 2 2 1 2 4 10 35 36 15 >8 ≤ 16.6.2.2.1 2, 4,10,35,36 15 >8 ≤ 1
6.6.2.2.1 2, 4,10,35, 36 20 >10 ≤ 1
NS_04 6.6.2.2.2 TBD TBD TBD
NS_05 6.6.3.3.1 1 10,15,20 ≥ 50 for QPSK ≤ 1
NS_06 6.6.2.2.3 12, 13, 14, 17 1.4, 3, 5, 10 n/a n/a
NS_07 6.6.2.2.36.6.3.3.2 13 10 Table 6.2.4-2 Table 6.2.4-2
..
NS_32 - - - - -
Section 6.6.3 covers ‘Spurious Emissions’, Section 6.6.2 covers ‘Out of band emission’,
August ‘09 | UL power control in LTE | 77
where 6.6.3.3. defines additional spurious emissions and 6.6.3.3.2. the additional spurious emissions for 3GPP Band 13
where 6.6.2.2. defines ‘Spectrum Emission Mask (SEM)’and 6.6.2.2.3. the additional SEM requirements for 3GPP Band 13
78
PUSCH power controlTransmit output power ( PUMAX), cont’d.
l In case of EUTRA Band 13 depending on RB allocation as well as number of
August ‘09 | UL power control in LTE | 78
l In case of EUTRA Band 13 depending on RB allocation as well as number of contiguously allocated RB different A-MPR needs to be considered.
79
PUSCH power controlTransmit output power ( PUMAX), cont’d.
DL UL
756746 7877773GPP Band 13
l In case of EUTRA Band 13 depending on RB allocation as well as number of
August ‘09 | UL power control in LTE | 79
l In case of EUTRA Band 13 depending on RB allocation as well as number of contiguously allocated RB different A-MPR needs to be considered.
80
PUSCH power controlTransmit output power ( PUMAX), cont’d.
DL UL
756746 7877773GPP Band 13
Network Signalling Value
Requirements (sub-clause) E-UTRA Band Channel
bandwidth (MHz)Resources
BlocksA-MPR
(dB)
… … … … … …
NS_07 6.6.2.2.36.6.3.3.2 13 10 Table 6.2.4-2 Table 6.2.4-2
… … … … … …
l In case of EUTRA Band 13 depending on RB allocation as well as number of
August ‘09 | UL power control in LTE | 80
l In case of EUTRA Band 13 depending on RB allocation as well as number of contiguously allocated RB different A-MPR needs to be considered.
81
PUSCH power controlTransmit output power ( PUMAX), cont’d.
DL UL
756746 7877773GPP Band 13
Network Signalling Value
Requirements (sub-clause) E-UTRA Band Channel
bandwidth (MHz)Resources
BlocksA-MPR
(dB)
… … … … … …
NS_07 6.6.2.2.36.6.3.3.2 13 10 Table 6.2.4-2 Table 6.2.4-2
… … … … … …
Region A Region B Region CIndicates the lowest RB
index of transmittedresource blocks
l In case of EUTRA Band 13 depending on RB allocation as well as number of
RBStart [0] - [12] [13] – [18] [19] – [42] [43] – [49]
LCRB [RBs] [6-8] [1 to 5 and 9-50] [≥8] [≥18] [≤2]
A-MPR [dB] [8] [12] [12] [6] [3]
resource blocks
Defines the length of a contiguous RB allocation
August ‘09 | UL power control in LTE | 81
l In case of EUTRA Band 13 depending on RB allocation as well as number of contiguously allocated RB different A-MPR needs to be considered.
82
R&S® CMW500 LTE RF testingSupported power measurements for LTE
l Supported power measurements on R&S CMW500® LTE RF Tester, l Peak Power (displayed in modulation measurements)l RB (recourse block) Power (displayed in Inband Emission meas.)l RB (recourse block) Power (displayed in Inband Emission meas.)l Transmit Power (displayed in modulation and SEM meas.)
August ‘09 | UL power control in LTE | 82
83
R&S® CMW500 LTE RF testingSupported power measurements for LTE – Tx power aspects
August ‘09 | UL power control in LTE | 83
84
R&S® CMW500 LTE RF testingSupported power measurements for LTE – Tx power aspects
100 RB transmission bandwidth = 20 MHz channel bandwidth
August ‘09 | UL power control in LTE | 84
85
R&S® CMW500 LTE RF testingSupported power measurements for LTE – Tx power aspects
August ‘09 | UL power control in LTE | 85
86
R&S® CMW500 LTE RF testingSupported power measurements for LTE – Tx power aspects
August ‘09 | UL power control in LTE | 86
87
R&S® CMW500 LTE RF testingSupported power measurements for LTE – Tx power aspects
RB power = Resource Block Power measured over 1 RB (12 subcarrier = 180 kHz)RB power = Resource Block Power, measured over 1 RB (12 subcarrier = 180 kHz)
August ‘09 | UL power control in LTE | 87
88
R&S® CMW500 LTE RF testingSupported power measurements for LTE – Tx power aspects
RB power = Resource Block Power measured over 1 RB (12 subcarrier = 180 kHz)RB power = Resource Block Power, measured over 1 RB (12 subcarrier = 180 kHz)Tx power = integrated power of all assigned RBs, e.g. 40 RB = 7.2 MHz
August ‘09 | UL power control in LTE | 88
89
Thank you for your attention, Questions & answer session
…configured as LTE Protocol Tester
R&S® CMW500 Wideband Communication Tester… configured for LTE RF testing
August ‘09 | UL power control in LTE | 89