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Submission
doc.: IEEE 802.11-15/0576r2
Chittabrata Ghosh, Intel
Power Consumption and Latency Values in State Transitions for IEEE 802.11ax Simulation
Scenarios
May 2015
Slide 1
Date: 2015-05-13
Authors:
Name Affiliations Address Phone email
Chittabrata Ghosh Intel
2200 Mission College Blvd., Santa Clara, CA
+1-415-244-8904 [email protected]
Chen Kojokaro [email protected]
Submission
doc.: IEEE 802.11-15/0576r2
Abstract
• The Simulation Scenarios document [1] has mentioned about modeling power consumption in various state transitions of three considered power save mechanisms
• Two sleep states have been introduced in [2] namely, shallow sleep and deep sleep
• In this contribution, we discuss the latency and power consumption values for every possible state transition• Transmit to Listen and vice versa
• Receive to Listen and vice versa
• Receive to Shallow Sleep
• Listen to Shallow Sleep and vice versa
• Listen to Deep Sleep and vice versa
Slide 2 Chittabrata Ghosh, Intel
May 2015
Submission
doc.: IEEE 802.11-15/0576r2
Various Power States Definition
Slide 3 Chittabrata Ghosh, Intel
• Simulation Scenarios document [1] of IEEE 802.11ax specifies the following common power model parameters for all simulation scenarios
Sleep power state is defined as the state when the STA is in Doze state and receiver is off
Power State Average Current Consumption [mA]
Transmit [mA] 280
Receive [mA] 100
Listen [mA] 50
Shallow Sleep [mA] 0.9
Deep Sleep [mA] 0.003
May 2015
Deep Sleep [2] power state is defined as a sleep state with the least (non-zero) power consumed and the longest transition time to Listen state. Shallow Sleep [2] power state is defined as a sleep state when the STA consumes more power but transitions faster to Listen state when compared to the Deep Sleep power state
Submission
doc.: IEEE 802.11-15/0576r2
State Transitions in 11ax Simulation Scenarios Document [1]
Slide 4
May 2015
Chittabrata Ghosh, Intel
Submission
doc.: IEEE 802.11-15/0576r2
Existing Table of State Transitions within 11ax Simulation Scenarios document
Slide 5 Chittabrata Ghosh, Intel
May 2015
Power Transition parameters
State Transitions Transition Time (ms) Average Power Consumption (mW)
Transmit Listen⬄ 0 0
Receive Listen⬄ 0 0
Receive Transmit⬄ TRT e.g., 209 mW (PRT=(280+100)*1.1/2)
Transmit Shallow Sleep⬄ TTS e.g., 154.5 mW (PTS=(280+0.9)*1.1/2)
Receive Shallow Sleep⬄ TRS e.g., 55.5 mW (PRS=(100+0.9)*1.1/2)
Listen Shallow Sleep⬄ TLSe.g., 28 mW (PLS=(50+0.9)*1.1/2)
Shallow Sleep Listen⬄ 0.5 ms (TSL)
Listen Deep Sleep⬄ TDSe.g., 0.5 mW (PDS=(0.9+0.003)*1.1/2)
Deep Sleep Listen⬄ 3 ms (TSD)
Existing Table under Common Power Model Parameters for all simulation Scenarios in Simulation Scenarios document doc. IEEE 802.11-14/0980r6 [1]
Submission
doc.: IEEE 802.11-15/0576r2
Power and Latency Transitions Between States in IEEE 802.11ax
Slide 6
Power Consumption and Latency Values in State Transitions
State Transitions Transition Time (ms) Power Consumption (mW)
Transmit Listen⬄ TTL = 0.010ms 75mW
Receive Listen⬄ 0.001ms 55mW
Receive Listen Transmit TRT TLT = 0.010ms PRT PLT = 100mW
Transmit Shallow Sleep TTS = 0.01ms PTS = 15mW
Receive Shallow Sleep TRS = 0.2ms PRS = 15mW
Listen Shallow Sleep TLS = 0.2ms PLS = 5mW
Shallow Sleep Listen TSL = 0.5ms
Listen Deep Sleep TLD = 0.01msPDS = 5mW
Deep Sleep Listen TSDL= 3ms
Chittabrata Ghosh, Intel
May 2015
We propose to replace the existing Table under Common Power Model Parameters for all simulation Scenarios in Simulation Scenarios document doc. IEEE 802.11-14/0980r6 [1] with the Table below
Submission
doc.: IEEE 802.11-15/0576r2
Summary
• We have proposed to modify the Simulation Scenarios by including a table specifying the power and latency parameters for enhanced state transition modeling
Slide 7 Chittabrata Ghosh, Intel
May 2015
Submission
doc.: IEEE 802.11-15/0576r2
References
[1] IEEE 11-14/0980r6: “TGax Simulation Scenarios”
[2] IEEE 11-15/0314r1: “Sleep States in IEEE 802.11ax Simulation Scenarios”
Slide 8 Chittabrata Ghosh, Intel
May 2015
Submission
doc.: IEEE 802.11-15/0576r2
Straw poll 1
Do you agree to include the Table on Power and Latency Transitions Between States discussed in Slide 6 under Common Power Model Parameters for all simulation Scenarios in the Simulation Scenarios document?
Slide 9 Chittabrata Ghosh, Intel
May 2015
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