1 / 8

Requirements for HEW

Requirements for HEW. Authors:. Date: 2013-11-14. Abstract. This presentation shows what mobile operator expects for HEW in a WLAN service. Note that this presentation includes some topics that are out of scope of standardization. WLAN Usage in Mobile Operators.

donar
Télécharger la présentation

Requirements for HEW

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Requirements for HEW Authors: • Date:2013-11-14 Akira Yamada, NTT DOCOMO, Inc.

  2. Abstract • This presentation shows what mobile operator expects for HEW in a WLAN service. • Note that this presentation includes some topics that are out of scope of standardization. Akira Yamada, NTT DOCOMO, Inc.

  3. WLAN Usage in Mobile Operators • LTE macro cells cover large coverage with high mobility • WLAN is used for higher throughput with lower mobility WLAN Hotspots High LTE Small Cells Peak Throughput LTE Macro Cells Low Low High STA Mobility Akira Yamada, NTT DOCOMO, Inc.

  4. What mobile operators expect for HEW Traffic Offloading • Tremendous traffic increase in mobile NW [1] • Traffic offloading is one of the promising solution for mobile operators to reduce CAPEX/OPEX • Make users to use WLAN more • Enhancing of user experience is key factor Popularize WLAN UX Enhancement Requirements?? Akira Yamada, NTT DOCOMO, Inc.

  5. Requirements • Higherarea throughput • Efficient transmission required • E.g. Congested train stations, center of down-town, etc… • Simulation scenarios using real-environmentis important • E.g. OBSS, interference, etc… • Further discussion needed about definition of “Area Throughput” • E.g. bps/m2 • Smooth switching between AP-AP / WLAN - cellular • Sticky client issue [2] when switching between APs is one of causes to interrupt packet flows due to lower MCS • Same issue occurs when switching from WLAN to cellular • Mechanisms to solve this issue is necessary Akira Yamada, NTT DOCOMO, Inc.

  6. Requirements (Cont.) • Not degrade area throughput of indoor BSSs by deploying outdoor large BSS • Outdoor scenario is important especially in crowded areas for traffic offloading • e.g. downtown Tokyo, crowded train stations, etc... • But, it is also important NOT to degrade area throughput of indoor BSS users by outdoor large BSS Akira Yamada, NTT DOCOMO, Inc.

  7. Summary • PAR should include following items: • Improving area throughput • Realizing smooth switching between AP-AP and Wi-Fi - Cellular • Not degrading area throughput of indoor BSSs by deploying outdoor large BSS Akira Yamada, NTT DOCOMO, Inc.

  8. References • [1] “Cisco Visual Networking Index: Global Mobile Data • Traffic Forecast Update, 2012–2017” • [2] Reza Hedayat et al, “Some Simulation Scenarios for HEW” 802.11-13/1176r0 Akira Yamada, NTT DOCOMO, Inc.

More Related