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TGah Use Cases Summary and Aggregated PHY Rates Analysis

TGah Use Cases Summary and Aggregated PHY Rates Analysis. Authors:. Date: 2011-03-15. Abstract. This presentation summarizes the use cases submitted to 802.11ah and analyzes the required aggregated PHY rate for each use case. Outdoor Use Cases [1][4-7]. Indoor Use Cases [1-3].

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TGah Use Cases Summary and Aggregated PHY Rates Analysis

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  1. TGah Use Cases Summary and Aggregated PHY Rates Analysis Authors: Date: 2011-03-15 Minyoung Park, Intel Corp.

  2. Abstract • This presentation summarizes the use cases submitted to 802.11ah and analyzes the required aggregated PHY rate for each use case. Minyoung Park, Intel Corp.

  3. Outdoor Use Cases [1][4-7] Minyoung Park, Intel Corp.

  4. Indoor Use Cases [1-3] Minyoung Park, Intel Corp.

  5. Aggregated Data Rate per BSS Minyoung Park, Intel Corp.

  6. Required Aggregated Data Rates for 11ah Use Cases High 50Mbps Low Outdoor Indoor Minyoung Park, Intel Corp.

  7. 915 MHz band in US: 902~928 MHz (26 MHz wide) • Other countries even less available • Typically requires three non-overlapping channels to mitigate co-channel interference • 2.5 MHz channel • 802.11ac 20 MHz 1/8 down-clocking • PHY rates: 0.8~10.8 Mbps (one stream) • 5 MHz channel • 802.11ac 40 MHz 1/8 down-clocking • PHY rates : 1.7 ~ 25 Mbps (one stream), ~50 Mbps (two streams) • Supporting PHY rates higher than 50 Mbps is challenging • 10 MHz or 20 MHz wide channel  only one or two non-overlapping channels • More than two antennas  hard to fit antennas in a device (half wave length ~ 17 cm) PHY Rates Minyoung Park, Intel Corp.

  8. Sub 1 GHz bands have limited frequency spectrum • Supporting aggregated PHY rate higher than 50 Mbps is challenging in sub 1 GHz bands • Hard to support use cases that require high data rates • Outdoor/indoor surveillance use cases (1c/2a) • Indoor home entertainment (2b) • 802.11ah should support the use cases that require aggregated PHY rate less than 50 Mbps Conclusions Minyoung Park, Intel Corp.

  9. [1] Stefan Aust, “Proposed IEEE 802.11ah Use Cases,” IEEE 802.11-11/17r5 [2] Minyoung Park “Additional Indoor Use Cases for 802.11ah,” IEEE 802.11-11/241r0 [3] Rolf de Vegt, “802.11ah Usage Model SubmissionSensor Network,” IEEE 802.11-11/242r0 [4] Ron Prat, “Additional Outdoor Use Case for 802.11ah,” IEEE 802.11-11/243r0 [5] Suhwook Kim, “IEEE 802.11ah Use Case – Outdoor Wi-Fi for cellular traffic offloading,” IEEE 802.11-11/244r1 [6] Wongyu Song, “IEEE 802.11ah Use Case – Outdoor Environmental / Agricultural Monitoring,” IEEE 802.11-11/253r0 [7] Mitsuru Iwaoka, “IEEE 802.11ah Use Case – Industrial Process Automation,” IEEE 802.11-11/260r1 [8] NIST PAP2 Guidelines for Assessing Wireless Standards for Smart Grid Applications 1.0. http://collaborate.nist.gov/twiki-sggrid/pub/SmartGrid/PAP02Objective3/NIST_PAP2_Guidelines_for_Assessing_Wireless_Standards_for_Smart_Grid_Applications_1.0.pdf References Minyoung Park, Intel Corp.

  10. Backup Minyoung Park, Intel Corp.

  11. 802.11ac 20/40 MHz 1/8 down-clocking • 802.11ac 20 MHz  2.5 MHz, NSS = 1 • 802.11ac 40 MHz  5 MHz, NSS = 1 Minyoung Park, Intel Corp.

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