Doc.: IEEE 802.11-15/0316r7 SubmissionHyeyoung Choi, LG ElectronicsSlide 1 Power Save Calibration...
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doc.: IEEE 802.11-15/0316r7 Submission Hyeyoung Choi, LG Electronics Slide 1 Power Save Calibration Date: 2015-05-11 Authors: Name Affiliations Address Phone Email Hyeyoung Choi LG Electronics 19, Yangjea- daero 11gil, Seocho-gu, Seoul 137-130, Korea +82-2-6912- 6589 [email protected] Suhwook Kim LG Electronics [email protected] Kiseon Ryu LG Electronics [email protected] Jeongki Kim LG Electronics [email protected] HanGyu Cho LG Electronics [email protected] May 2015
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Transcript of Doc.: IEEE 802.11-15/0316r7 SubmissionHyeyoung Choi, LG ElectronicsSlide 1 Power Save Calibration...
doc.: IEEE 802.11-15/0316r7
Submission Hyeyoung Choi, LG ElectronicsSlide 1
Power Save Calibration
Date: 2015-05-11Authors:
Name Affiliations Address Phone EmailHyeyoung Choi LG Electronics
19, Yangjea-daero 11gil, Seocho-gu,
Seoul 137-130, Korea
+82-2-6912-6589 [email protected] Kim LG Electronics [email protected] Ryu LG Electronics [email protected] Kim LG Electronics [email protected] Cho LG Electronics [email protected]
May 2015
doc.: IEEE 802.11-15/0316r7
Submission
Abstract• This submission provides updated results for power
save calibration simulations.– Many companies clarified parameters for power save simulation
calibration• The PHY rate of each frame
• Use ACK frame only(no B-ACK)
• The details of operation in PSM test
• All test cases and parameters are defined in 11-14-0980r10 Simulation Scenarios.
Hyeyoung Choi, LG ElectronicsSlide 2
May 2015
doc.: IEEE 802.11-15/0316r7
Submission
PSM Test• The MSDU 1500 bytes(PPDU length=1940us) DL
traffic was transmitted every 200ms
• We update the following operation in our calibration– When STA on PSM receives only the Data frame(no DTIM Beacon
frame), STA may reset the PSM Timer.
– The STA stays in Awake state during the PSM Timeout period regardless of the value of the TIM field in DTIM beacon
– Use QoS Null frame without QoS Control field in MAC header
Hyeyoung Choi, LG ElectronicsSlide 3
May 2015
Parameters
RTS/CTS OFF
AIFS=DIFS 34us
MCS 0
No A-MPDU aggregation
Simulation time 500s
Beacon size(Byte) 80
doc.: IEEE 802.11-15/0316r7
Submission
Issues of Test 5 in current SSD(1/2)• Test 5 in Current SSD is imprecise for power save
calibration.– The interval between the first DL Data arrival Time and the first
DTIM Beacon Time affects the time spent in sleep state in PSM Test
– Ex. DTIM=[3], Timeout=[100] ms
May 2015
Hyeyoung Choi, LG ElectronicsSlide 4
Sleep Sleep
Sleep Sleep
Sleep Time per 600ms
Case 1
Case 2
AP
STA
0 2 1
1 00 0 11 2
Sleep
0 0 0
0 2 1
Sleep
0 2 1
Sleep
0
AP
STA
0 2 1
1 10 1 00 1
0 2 1
Sleep
0
Sleep
Sleep
Case 1:The first
DL data arrival time=200us
DATA
QoSNull PM=0
ACK DATA
ACK
DATA
ACKQoSNull
PM=1
ACK
# of Queue Data
DTIM Count
Case 2:The first
DL data arrival time=95ms
doc.: IEEE 802.11-15/0316r7
Submission
Issues of Test 5 in current SSD(2/2)• For example,
– The first DTIM Beacon is sent at 100ms
– The first DL Data arrives at 200us, 95ms
• Therefore, we need to clarify the interval between the first DL Data arrival time and the first DTIM Beacon transmission time.
May 2015
Hyeyoung Choi,, LG ElectronicsSlide 5
STA(%) AP(%)
First data
arrival time
DTIMPSM
Timeout
Listen RX TX Sleep Listen RX TX Sleep
Case 1 200us1 100 49.45 1.14 0.06 49.35 98.71 0.06 1.14 0
3 100 32.76 1.04 0.05 66.15 98.73 0.05 1.14 0
Case 2 95ms1 100 50.06 1.17 0.09 48.68 98.64 0.09 1.16 0
3 100 48.75 1.05 0.07 50.13 98.69 0.07 1.15 0
doc.: IEEE 802.11-15/0316r7
Submission
Simulation results for PSM Test- Time• In our calibration, the following event sequence is assumed:
– The first DTIM Beacon is sent at 100ms
– The first DL DATA arrives at 200us
Hyeyoung Choi, LG ElectronicsSlide 6
May 2015
STA(%) AP(%)
Power save
ON/OFFDTIM
PSM Timeout
Listen RX TX Sleep Listen RX TX Sleep
Active - - 99.01 0.97 0.02 0 98.95 0.02 0.97 0
PSM
1 50 25.15 1.17 0.09 73.59 98.64 0.09 1.17 0
3 50 16.83 1.05 0.07 82.05 98.69 0.07 1.15 0
1 100 49.45 1.14 0.06 49.35 98.71 0.06 1.14 0
3 100 32.76 1.04 0.05 66.15 98.73 0.05 1.14 0
1 200 98.85 1.12 0.02 0 98.77 0.02 1.12 0
3 200 98.96 1.02 0.02 0 98.77 0.01 1.12 0
doc.: IEEE 802.11-15/0316r7
Submission
Simulation results for PSM Test- Energy
May 2015
Hyeyoung Choi, LG ElectronicsSlide 7
STA(%) AP(%)
Power save
ON/OFFDTIM
PSM Timeout
Listen RX TX Sleep Listen RX TX Sleep
Active - - 97.96 1.92 0.12 0 94.76 0.04 5.20 0
PSM
1 50 89.78 8.32 1.88 0.02 93.62 0.18 6.20 0
3 50 87.08 10.86 2.03 0.03 93.74 0.13 6.12 0
1 100 94.98 4.39 0.62 0.01 93.80 0.11 6.09 0
3 100 93.35 5.90 0.73 0.01 93.86 0.09 6.05 0
1 200 97.66 2.22 0.12 0 93.98 0.04 5.98 0
3 200 97.86 2.02 0.12 0 93.98 0.04 5.98 0
doc.: IEEE 802.11-15/0316r7
Submission
• DTIM=[3], PSM Timeout=[100]ms
Simulation results for PSM Test-EER
STA AP
PSM ON
Energy Listen RX TX Sleep Listen RX TX Sleep
Simulation time(%) 32.76 1.04 0.05 66.15 98.73 0.05 1.14 0
current(mA) 50 100 280 0.003 50 100 280 0.003
Power(Watt) 0.001802034 0.000113931 1.41722E-05 2.18308E-07 0.005430084 5.0615E-06 0.000350214 0
Power (%) 93.35 5.90 0.73 0.01 93.86 0.09 6.05 0
Sum Power(Watt) 0.001930356 0.005785359
PSM OFF
Energy Listen RX TX Sleep Listen RX TX Sleep
Simulation time(%) 99.01 0.97 0.02 0 98.95 0.02 0.97 0
current(mA) 50 100 280 0.003 50 100 280 0.003
Power(Watt) 0.00544544 0.000107 6.78E-06 0 0.00544224 2.42E-06 0.000299 0
Power (%) 97.96 1.92 0.12 0 94.76 0.04 5.20 0
Sum Power(Watt) 0.005558916 0.00574342
May 2015
Hyeyoung Choi,, LG ElectronicsSlide 8
Energy Efficiency Ratio 0.3473Bit"eEnergyPerOld"AvegagBit"eEnergyPerNew"Avegag
EER
doc.: IEEE 802.11-15/0316r7
Submission
PSP Test• The MSDU 1500 bytes DL traffic was transmitted
every 200ms– PPDU length=1940us
Hyeyoung Choi, LG ElectronicsSlide 9
May 2015
Parameters
RTS/CTS OFF
AIFS=DIFS 34us
MCS 0
No A-MPDU aggregation
Simulation time 500s
Beacon size(Byte) 80
doc.: IEEE 802.11-15/0316r7
Submission
Simulation results for PSP Test-Time/Energy
• STA in PSP sleeps longer than PSM Test.
• Time
• Energy
Hyeyoung Choi, LG ElectronicsSlide 10
May 2015
STA(%) AP(%)
Power saveON/OFF DTIM Listen RX TX Sleep Listen RX TX Sleep
Active - 99.01 0.97 0.02 0 98.95 0.02 0.97 0
PSP1 0.09 1.14 0.08 98.69 98.69 0.08 1.14 0
3 0.07 1.04 0.08 98.81 98.69 0.08 1.14 0
STA(%) AP(%)
Power saveON/OFF DTIM Listen RX TX Sleep Listen RX TX Sleep
Active - 97.96 1.92 0.12 0 94.76 0.04 5.20 0
PSP1 3.22 81.09 15.48 0.21 93.76 0.15 6.09 0
3 2.85 80.14 16.79 0.23 93.76 0.15 6.09 0
doc.: IEEE 802.11-15/0316r7
Submission
Simulation results for PSP Test-EER• DTIM=[3]
• The PSP mechanism is more Energy efficient than the PSM.
May 2015
Hyeyoung Choi, LG ElectronicsSlide 11
STA AP
PSP ON
Energy Listen RX TX Sleep Listen RX TX Sleep
Simulation time(%) 0.07 1.04 0.08 98.81 98.69 0.08 1.14 0
current(mA) 50 100 280 0.003 50 100 280 0.003
Power(Watt) 4.07726E-06 0.000115 2.4E-05 3.26057E-07 0.005427778 8.58E-06 0.000352 0
Power (%) 2.85 80.14 16.79 0.23 93.76 0.15 6.09 0
Sum Power(Watt) 0.000143122 0.00578871
PSP OFF
Energy Listen RX TX Sleep Listen RX TX Sleep
Simulation time(%) 99.01 0.97 0.02 0 98.95 0.02 0.97 0
current(mA) 50 100 280 0.003 50 100 280 0.003
Power(Watt) 0.00544544 0.000107 6.78E-06 0 0.00544224 2.42E-06 0.000299 0
Power (%) 97.96 1.92 0.12 0 94.76 0.04 5.20 0
Sum Power(Watt) 0.005558916 0.00574342
Energy Efficiency Ratio
cf. EER of PSM =0.3473
0.0257Bit"eEnergyPerOld"AvegagBit"eEnergyPerNew"Avegag
EER
doc.: IEEE 802.11-15/0316r7
Submission
UAPSD Test• The MSDU 120 bytes DL/UL traffic was transmitted
every 40ms– PPDU length=244us
Hyeyoung Choi, LG ElectronicsSlide 12
May 2015
Parameters
RTS/CTS OFF
AIFS=DIFS
34us
MCS 0
No A-MPDU aggregation
ProbeDelay 100us
Simulation time 500s
MPDU
ACK
SIFS
MPDU
ACK
SIFSAIFSAIFS
Backoff
BackoffProbeDelay
Transmit (TX) Listen (LI)
Receive (RX) Sleep
LI TX TX SleepSleep LI RX RXLI LI
Power State
AP
STA
STA Power State
DLDATA
ULDATA
UL DATA is created and set immediately
to transmission
AP buffers the DL frame since the STA is in Power Save mode
doc.: IEEE 802.11-15/0316r7
Submission
Simulation results for U-APSD Test-Time/Energy
• Time
• Energy
May 2015
Hyeyoung Choi,, LG ElectronicsSlide 13
STA(%) AP(%)
Power save
ON/OFFListen RX TX Sleep Listen RX TX Sleep
Active 98.56 0.72 0.72 0 98.23 0.72 0.72 0
U-APSD 0.84 0.72 0.72 97.72 98.23 0.72 0.72 0
STA(%) AP(%)
Power save
ON/OFFListen RX TX Sleep Listen RX TX Sleep
Active 94.74 1.38 3.88 0 94.72 1.39 3.89 0
U-APSD 13.23 22.81 63.87 0.09 94.72 1.39 3.89 0
doc.: IEEE 802.11-15/0316r7
Submission
Simulation results for UAPSD Test-EER
May 2015
Hyeyoung Choi,, LG ElectronicsSlide 14
STA AP
U-APSD ON
Energy Listen RX TX Sleep Listen RX TX Sleep
Simulation time(%) 0.84 0.72 0.72 97.72 98.23 0.72 0.72 0
current(mA) 50 100 280 0.003 50 100 280 0.003
Power(Watt) 4.59353E-05 7.92E-05 0.000222 3.22492E-07 0.005402588 7.92E-05 0.000222 0
Power (%) 13.23 22.81 63.87 0.09 94.72 1.39 3.89 0
Sum Power(Watt) 0.000347218 0.005703548
U-APSD OFF
Energy Listen RX TX Sleep Listen RX TX Sleep
Simulation time(%) 98.56 0.72 0.72 0 98.23 0.72 0.72 0
current(mA) 50 100 280 0.003 50 100 280 0.003
Power(Watt) 0.00542079 7.92E-05 0.000222 0 0.005402606 7.92E-05 0.000222 0
Power (%) 94.74 1.38 3.88 0 94.72 1.39 3.89 0
Sum Power(Watt) 0.005721798 0.00570359
Energy Efficiency Ratio 0.0607Bit"eEnergyPerOld"AvegagBit"eEnergyPerNew"Avegag
EER
doc.: IEEE 802.11-15/0316r7
Submission
Conclusion• In this submission, we provide simulation results for
power save calibration.
• Some text changes in simulation scenario are needed.– In PSM Test of current SSD, insert text as:
• In Following event sequence is assumed:– The first DL DATA arrives at 200us
– The first DTIM Beacon is sent at 100ms
May 2015
Hyeyoung Choi,, LG ElectronicsSlide 15
doc.: IEEE 802.11-15/0316r7
Submission
Reference• [1] 11-14-0980-10-00ax-simulation-scenarios.docx
• [2]11-15-0103-00-00ax-power-save-calibration.pptx
• [3] 11-15-0072-01-00ax-U-APSD power saving calibration results
• [4]11-15-0306-03-00ax-Power-Save-Mode-Calibration-Results.pptx
Suhwook Kim, LG ElectronicsSlide 16
May 2015
doc.: IEEE 802.11-15/0316r7
Submission
Straw poll #1• Do you agree to add the following text into Test 5
(Power Save Mechanism) of the latest Simulation Scenarios document– Following event sequence is assumed:
• The first DL DATA arrives at 200us
• The first DTIM Beacon is sent at 100ms
• Y:
• N:
• A:
May 2015
Hyeyoung Choi,, LG ElectronicsSlide 17
