An Example Idea of FIA Authors: Date: 2010-05-20 May 2010 Name Company 2018/11/16 May 2010 An Example Idea of FIA Authors: Date: 2010-05-20 Name Company Address Phone email Hitoshi MORIOKA ROOT Inc. #33 Ito Bldg. 2-14-38 Tenjin, Chuo-ku, Fukuoka 810-0001 JAPAN +81-92-771-7630 hmorioka@root-hq.com Hiroshi MANO 8F TOC2 Bldg. 7-21-11 Nishi-Gotanda, Shinagawa-ku, Tokyo 141-0031 JAPAN +81-3-5719-7630 hmano@root-hq.com Paul A Lambert Marvell Marvel lane, MS 2-201 Santa Clara, CA 95054 +1-408-222-9522 paul@marvell.com Marc Emmelmann TU Berlin Einsteinufer 25 10587 Berlin Germany +49-30-314 24580 emmelmann@ieee.org Hiroki Nakano Trans New Technology Sumitomo-Seimei Kyoto Bldg. 8F, 62 Tukiboko-cho Shimogyo-ku, Kyoto 600-8492 JAPAN +81-75-213-1200 cas.nakano@gmail.com cas@trans-nt.com Mineo Takai Space Time Engineering 609 Deep Valley Drive, Suite 200　Rolling Hills Estates, CA 90274, USA +1-310-265-4441 mineo@ieee.org Hitoshi Morioka, ROOT INC. Hiroshi Mano, ROOT Inc.

Use Case Scenario Walk May 2010 2018/11/16 May 2010 Use Case Scenario Large number of STAs are constantly entering and exiting the coverage area of an ESS. Every STA passes through the coverage area in a short time. So FIA intends to Reduce network connection latency Reduce air-time occupancy of initial authentication Walk Hitoshi Morioka, ROOT INC. Hiroshi Mano, ROOT Inc.

Sequence of Establishing Connection May 2010 Sequence of Establishing Connection Discover an appropriate AP Channel Scanning, Probe, IEEE 802.11u… WLAN association Authentication, Association… Upper layer setup DHCP… Hitoshi Morioka, ROOT INC.

November 2005 doc.: IEEE 802.11-05/1859r0 May 2010 Protocol Sequence to Establish a Connection to the Internet by IEEE802.11i ( PEAP/EAP-MSCHAPv2) and DHCP STA AP 14 round trip 2ms/oneway: 56ms RADIUS Probe Authentication 11 round trip 5ms/oneway: 110ms Association PEAP /EAP-MSCAPv2 (11 round trip) Details are out of scope. We’ll make only a Framework and liaison to IETF DHCP (2 round trip) DHCP Server Hitoshi Morioka, ROOT INC. Page 4 Hitoshi MORIOKA, ROOT Inc.

How to reduce connection latency and air-time occupancy May 2010 How to reduce connection latency and air-time occupancy Transmit Rate 1Mbps (DSSS) 6Mbps (OFDM) DIFS 50us 34us CW Min 620us (ave. 310us) 135us (ave. 67us) CW Max 20,460us 9,207us Preamble Length 144us 16us PLCP Header 48us 4us MAC Header 256us 43us FCS 32us 5us SIFS 10us Ack 304us 39us Overhead 1,154us 224us Data (100byte) 800us 133us Reducing number of frame exchanges is effective. Because… Length of each frame for association is short. (mostly < 100byte) Overhead (Preamble, IFS, Header, ACK, etc…) is needed for every frame. Preamble FCS CW Ack Data DIFS SIFS PLCP Header MAC Header Hitoshi Morioka, ROOT INC.

Protocol Sequence to Establish a Connection to the Internet by FIA May 2010 Protocol Sequence to Establish a Connection to the Internet by FIA STA AP 1.5 round trip 2ms/oneway: 6ms Beacon GAS Server GAS FIA 2 round trip 5ms/oneway: 20ms RADIUS Connection established (Includes some parts of upper layer setup such as IP address, gateway, DNS…) Hitoshi Morioka, ROOT INC.

How to reduce the number of frame exchanges in AP discovery May 2010 How to reduce the number of frame exchanges in AP discovery Restricting to transmit probe. Beacon includes FIA Capability bit to indicate. Some amendments to .11u may be needed for reducing GAS transmission. Such as… AP should transmit GAS response as broadcast to notify the information to other STAs too. STAs, which received broadcasted GAS response and the information included in the GAS response is enough, should not transmit GAS request to the same AP. Hitoshi Morioka, ROOT INC.

Questions & Comments May 2010 2018/11/16 Hitoshi Morioka, ROOT INC. Hiroshi Mano, ROOT Inc.