IEEE 802.11-19/1826r0 NGV Midamble Period Choices Discussion
In this document from November 2019, the discussion revolves around the support for Midamble in 11bd, focusing on different Midamble periods based on channel conditions and MCS levels. The document explores additional choices for Midamble periods and provides simulation settings for Rural LOS, Urban Approaching LOS, and Urban Crossing NLOS scenarios, analyzing their impact on goodput under varying SNR levels. The findings highlight the optimal Midamble periods for different scenarios, aiding in maximizing effective data rates in wireless communication systems.
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November 2019 doc.: IEEE 802.11-19/1826r0 NGV Midamble Period Other Choices Date: 2019-11-08 Authors: Name Affiliations Address Phone email Prashant Sharma Marvell 5488 Marvell Ln, Santa Clara, CA 95054 psharma@marvell.com Rui Cao ruicao@marvell.com Hongyuan Zhang hongyuan@marvell.com Submission Slide 1 Prashant Sharma and etc., Marvell
November 2019 doc.: IEEE 802.11-19/1826r0 Introduction In May meeting, Midamble has been agreed to be supported in 11bd [1]. Different channel condition and MCS level prefer different Midamble periods. Two bits have been reserved in NGV-SIG field to signal Midamble period [2] One of the midamble period has been decided to be 4 Additional choices for Midamble periods in 11bd are discussed in this contribution. Submission Slide 2 Prashant Sharma and etc., Marvell
November 2019 doc.: IEEE 802.11-19/1826r0 Simulation Settings 10MHz DSRC channel @5.9GHz. OFDM numerology: 11ac 20MHz DC2. 1x1-1ss, LDPC, 300 bytes. CFO: uniform [-10 10]ppm on both Tx and Rx side. Ideal timing. Midamble one VHT-LTF Periods: 4, 6, 8, 10, 12, 16 Goodput is the maximum achievable effective data rate. Goodput(SNR, M) = maxMCS{Rate(MCS) * (1-PER(MCS, SNR, M))* M/(M+1)} M is the midamble period Submission Slide 3 Prashant Sharma and etc., Marvell
November 2019 doc.: IEEE 802.11-19/1826r0 Rural LOS 11bd, IdealTiming, LDPC, Midamble, CFO-ON, LTF CH:Rural LOS 40 35 30 25 Goodput (Mbps) 20 15 Mperiod4 Mperiod6 Mperiod8 Mperiod10 Mperiod12 Mperiod16 10 5 0 -5 0 5 10 15 20 25 30 35 40 SNR (dB) Period 10 shows the best peak goodput. Period 16 shows some goodput gain for low SNR region. Submission Slide 4 Prashant Sharma and etc., Marvell
November 2019 doc.: IEEE 802.11-19/1826r0 Urban Approaching LOS 11bd, IdealTiming, LDPC, Midamble, CFO-ON, LTF CH:Urban Approaching LOS 40 35 30 25 Goodput (Mbps) 20 15 Mperiod4 Mperiod6 Mperiod8 Mperiod10 Mperiod12 Mperiod16 10 5 0 -5 0 5 10 15 20 25 30 35 40 SNR (dB) Period 10 shows the best peak goodput. Period 16 shows some goodput gain for low SNR region. Submission Slide 5 Prashant Sharma and etc., Marvell
November 2019 doc.: IEEE 802.11-19/1826r0 Urban Crossing NLOS 11bd, IdealTiming, LDPC, Midamble, CFO-ON, LTF CH:Urban Crossing NLOS 35 30 25 Goodput (Mbps) 20 15 Mperiod4 Mperiod6 Mperiod8 Mperiod10 Mperiod12 Mperiod16 10 5 0 -5 0 5 10 15 20 25 30 35 40 SNR (dB) Period 6 shows the best peak goodput. Period 10 shows some goodput gain for medium SNR region. Period 16 shows some goodput gain for low SNR region. Submission Slide 6 Prashant Sharma and etc., Marvell
November 2019 doc.: IEEE 802.11-19/1826r0 Highway LOS 11bd, IdealTiming, LDPC, Midamble, CFO-ON, LTF CH:Highway LOS 35 30 25 Goodput (Mbps) 20 15 Mperiod4 Mperiod6 Mperiod8 Mperiod10 Mperiod12 Mperiod16 10 5 0 -5 0 5 10 15 20 25 30 35 40 SNR (dB) Period 6 shows the best peak goodput. Period 10 shows some goodput gain for medium SNR region. Period 16 shows some goodput gain for low SNR region. Submission Slide 7 Prashant Sharma and etc., Marvell
November 2019 doc.: IEEE 802.11-19/1826r0 Highway NLOS 11bd, IdealTiming, LDPC, Midamble, CFO-ON, LTF CH:Highway NLOS 25 20 15 Goodput (Mbps) 10 Mperiod4 Mperiod6 Mperiod8 Mperiod10 Mperiod12 Mperiod16 5 0 -5 0 5 10 15 20 25 30 35 40 SNR (dB) Period 4 shows the best peak goodput. Period 10 shows some goodput gain for medium SNR region. Period 16 shows some goodput gain for low SNR region. Submission Slide 8 Prashant Sharma and etc., Marvell
November 2019 doc.: IEEE 802.11-19/1826r0 Summary In this contribution, we simulated the performance of 11bd 10MHz PPDU with more Midamble periods. The good set of Midamble periods are: 4, 6, 10, 16. 4 has already been motioned. We can define 6, 10, 16 as the other three options. Submission Slide 9 Rui Cao and etc., Marvell
November 2019 doc.: IEEE 802.11-19/1826r0 Reference [1] IEEE 802.11-19/0740. [2] IEEE 802.11-19/1472r1. Submission Slide 10 Rui Cao and etc., Marvell
November 2019 doc.: IEEE 802.11-19/1826r0 Straw Poll 1 Do you agree to add the following text into Section 3 of SFD? The one of the Midamble periods is 6. Y: N: A: Submission Slide 11 Rui Cao and etc., Marvell
November 2019 doc.: IEEE 802.11-19/1826r0 Straw Poll 2 Do you agree to add the following text into Section 3 of SFD? The one of the Midamble periods is 10. Y: N: A: Submission Slide 12 Rui Cao and etc., Marvell
November 2019 doc.: IEEE 802.11-19/1826r0 Straw Poll 3 Do you agree to add the following text into Section 3 of SFD? The one of the Midamble periods is 16. Y: N: A: Submission Slide 13 Rui Cao and etc., Marvell
