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IEEE 802.11ah Use Case – Outdoor Wi-Fi for cellular traffic offloading

IEEE 802.11ah Use Case – Outdoor Wi-Fi for cellular traffic offloading. Date: 22 th February , 20 1 1. Authors:. Outline. We propose outdoor Wi-Fi for cellular traffic offloading as IEEE 802.11ah use case. About IEEE 802.11ah.

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IEEE 802.11ah Use Case – Outdoor Wi-Fi for cellular traffic offloading

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  1. IEEE 802.11ah Use Case – Outdoor Wi-Fi for cellular traffic offloading Date: 22th February, 2011 Authors:

  2. Outline • We propose outdoor Wi-Fi for cellular traffic offloading as IEEE 802.11ah use case

  3. About IEEE 802.11ah • This amendment defines an Orthogonal Frequency Division Multiplexing (OFDM) Physical layer (PHY) operating in the license-exempt bands below 1 GHz, e.g., 868-868.6 MHz (Europe), 950 MHz -958 MHz (Japan),  314-316 MHz, 430-434 MHz, 470-510 MHz, and 779-787 MHz (China), 917 – 923.5 MHz (Korea) and 902-928 MHz (USA), and enhancements to the IEEE 802.11 Medium Access Control (MAC) to support this PHY, and provides mechanisms that enable coexistence with other systems in the bands including IEEE 802.15.4 and IEEE P802.15.4g. • The data rates defined in this amendment optimize the rate vs. range performance of the specific channelization in a given band. • This amendment also adds support for: • transmission range up to 1 km • data rates > 100 kbit/s while maintaining the 802.11 WLAN user experience for fixed, outdoor, point to multi point applications.

  4. Motivation • Mobile traffic explosion is significant problem of vendors and operators

  5. Motivation • Traffic offloading by 802.11 WLAN is considered as good solution of mobile traffic explosion • However, current 802.11(a, g, n, ac) WLAN have short coverage and assume indoor environment • TGah has large coverage (~1km), so it can be used for mobile traffic offloading in outdoor environment

  6. Use Case : Outdoor Wi-Fi for cellular traffic offloading

  7. Outdoor Wi-Fi : Requirements

  8. References [1] IEEE P802.11 Wireless LANs, IEEE 802.11ah Call for proposals, IEEE 802.11-10/1373r0, 11.11.2010 [2] IEEE P802.11 Wireless LANs, Sub 1 GHz license-exempt Use Cases, IEEE 802.11-10/1044r0 [3] IEEE P802.11 Wireless LANs, Proposed IEEE 802.11ah Use Cases, IEEE 802.11-11/0017r2

  9. Backup Slide

  10. Offloading effect estimation • LTE-Adv. (FDD 10 + 10, base coverage urban) • DL(4x2): 21 ~ 27 Mbps • UL(2x4): 15 ~ 18 Mbps • 802.11ac (20MHz bandwidth) • 1 spatial stream:6.5 ~ 86.7 Mbps • 8 spatial stream:52 ~ 693 Mbps • 802.11ah (5MHz bandwidth) • 1 spatial stream: ~ 18 Mbps (64QAM, R=5/6, reduced GI)

  11. System performance • LTE-Adv.

  12. System performance • 802.11ac

  13. Channelization • ≥20MHz bandwidth • USA (902~928 MHz) • China (470-510 MHz) • <10MHz bandwidth • Europe (868~868.6 MHz) • China (314~316, 430~434, 779~787 MHz) • Japan (950~958 MHz) • Korea (917 ~ 923.5 MHz)

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