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Doc.: IEEE 802.11-12/0032r0 Submission NameAffiliationsAddressPhoneemail Hitoshi MORIOKAAllied Telesis R&D Center 2-14-38 Tenjin, Chuo-ku, Fukuoka 810-0001.

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Presentation on theme: "Doc.: IEEE 802.11-12/0032r0 Submission NameAffiliationsAddressPhoneemail Hitoshi MORIOKAAllied Telesis R&D Center 2-14-38 Tenjin, Chuo-ku, Fukuoka 810-0001."— Presentation transcript:

1 doc.: IEEE 802.11-12/0032r0 Submission NameAffiliationsAddressPhoneemail Hitoshi MORIOKAAllied Telesis R&D Center 2-14-38 Tenjin, Chuo-ku, Fukuoka 810-0001 JAPAN +81-92-771-7630 hmorioka@root-hq.com Gabor BajkoNokia200 S Mathilda Ave, Sunnyvale 8585253693 gabor.bajko@nokia.com Hiroshi ManoAllied Telesis R&D Center 7-21-11 Nishi-Gotanda, Shinagawa-ku, Tokyo 141-0031 JAPAN +81-3-5719-7630 hmano@root-hq.com Mark RISONCSRCambridge Business Park, Cowley Road, Cambridge CB4 0WZ UK +44-1223-692000 Mark.Rison@csr.com Marc EmmelmannFraunhofer FOKUSKaiserin-Augusta-Alle 31 10589 Berlin Germany +49-30-3463-7268 emmelmann@ieee.org January 2012 Hitoshi Morioka, Allied Telesis R&D CenterSlide 1 Higher Layer Setup Proposal Presentation Date: 2012-01-10 Authors:

2 doc.: IEEE 802.11-12/0032r0 Submission January 2012 Hitoshi Morioka, Allied Telesis R&D CenterSlide 2 Abstract This document describes a technical proposal for TGai which addresses upper layer setup phase. This proposal is assumed to combine with EAP-RP (11/1160r4).

3 doc.: IEEE 802.11-12/0032r0 Submission Conformance w/ Tgai PAR & 5C January 2012 Hitoshi Morioka, Allied Telesis R&D CenterSlide 3 Conformance QuestionResponse Does the proposal degrade the security offered by Robust Security Network Association (RSNA) already defined in 802.11? No Does the proposal change the MAC SAP interface?No Does the proposal require or introduce a change to the 802.1 architecture?No Does the proposal introduce a change in the channel access mechanism?No Does the proposal introduce a change in the PHY?No Which of the following link set-up phases is addressed by the proposal? (1) AP Discovery (2) Network Discovery (3) Link (re-)establishment / exchange of security related messages (4) Higher layer aspects, e.g. IP address assignment 4

4 doc.: IEEE 802.11-12/0032r0 Submission Typical Sequence for Internet Access by IPv4 January 2012 Hitoshi Morioka, Allied Telesis R&D CenterSlide 4 STA AP DHCP DHCP Server Authentication, Association, Key negotiation Gateway Correspondent Node Communication ARP 3 round-trips of frame exchanges between AP and STA before communication in addition to authentication, association and key negotiation

5 doc.: IEEE 802.11-12/0032r0 Submission Reduce Frame Exchanges One of the target of TGai is to accommodate a lot of STAs simultaneously. Each frame consumes air-time for IFSs regardless of the frame length. So reducing the number of frame exchanges is effective for this target. January 2012 Hitoshi Morioka, Allied Telesis R&D CenterSlide 5

6 doc.: IEEE 802.11-12/0032r0 Submission Optimized Sequence for Internet Access with 1 Round-trip Association (11/1160r3) January 2012 Hitoshi Morioka, Allied Telesis R&D Center STA AP DHCP Server Gateway Correspondent Node Communication AS Virtually Simultaneous (RADIUS for AAA) Assoc. Req. w/HLS Request Element (could be encrypted) Assoc. Resp. w/HLS Response Element (could be encrypted) e.g. DHCP w/Rapid Commit Option ARP/ND Slide 6

7 doc.: IEEE 802.11-12/0032r0 Submission Concept The proposed protocol is terminated at the AP. This protocol is NOT DHCP/RA. Just uses the message format for future flexibility. January 2012 Hitoshi Morioka, Allied Telesis R&D CenterSlide 7 AP STA.11ai HLS DHCP RA Static Out of Scope

8 doc.: IEEE 802.11-12/0032r0 Submission Modified Existing Element Extended Capabilities element –Add the following fields. IPv4ConfigDuringAssoc (1bit) –Indicates that the AP supports Higher Layer Setup for IPv4. IPv6ConfigDuringAssoc (1bit) –Indicates that the AP supports Higher Layer Setup for IPv6. OnlyOneIPConfigDuringAssoc (1bit) –If 1, the AP provides either IPv4 or IPv6 Higher Layer Setup. January 2012 Hitoshi Morioka, Allied Telesis R&D CenterSlide 8

9 doc.: IEEE 802.11-12/0032r0 Submission New Elements HLS Request Element HLS Response Element January 2012 Hitoshi Morioka, Allied Telesis R&D CenterSlide 9

10 doc.: IEEE 802.11-12/0032r0 Submission HLS Request Element Element Format HLS Request Flags –Encrypted: Optional subelements are encrypted or not. –IPv4: The STA requests IPv4 HLS or not. –IPv6: The STA requests IPv6 HLS or not. January 2012 Hitoshi Morioka, Allied Telesis R&D CenterSlide 10

11 doc.: IEEE 802.11-12/0032r0 Submission HLS Response Element Element Format HLS Response Flags –Encrypted: Optional Subelements are encrypted or not. January 2012 Hitoshi Morioka, Allied Telesis R&D CenterSlide 11

12 doc.: IEEE 802.11-12/0032r0 Submission Optional Subelements January 2012 Hitoshi Morioka, Allied Telesis R&D CenterSlide 12 Subelemen t ID NameLength HLS Request HLS Rsponse 0Reserved 1IPv4 Configuration 1-25211 2IPv4-MAC address 1-250Multiple 3IPv6 Configuration 1-25211 4IPv6-MAC address 1-242Multiple 5IPv6 RA1-252Multiple 6-220Reserved 221Vendor Specific1-252YY 222-255Reserved

13 doc.: IEEE 802.11-12/0032r0 Submission IPv4 Configuration Subelement Subelement Format –IPv4 Configuration Message field contains a DHCPDISCOVER (HLS Request) or a DHCPACK (HLS Response) message defined in RFC2131 without MAC header, IP header, UDP header. January 2012 Hitoshi Morioka, Allied Telesis R&D CenterSlide 13

14 doc.: IEEE 802.11-12/0032r0 Submission IPv4-MAC Address Subelement Subelement Format –IPv4-MAC Address Combination –This subelement is used for reducing ARP packet exchanges. January 2012 Hitoshi Morioka, Allied Telesis R&D CenterSlide 14

15 doc.: IEEE 802.11-12/0032r0 Submission IPv6 Configuration Subelement Subelement Format –IPv6 Configuration Message field contains a DHCP SOLICIT (HLS Request) or a DHCP REPLY (HLS Response) message defined in RFC3315 without MAC header, IP header, UDP header. January 2012 Hitoshi Morioka, Allied Telesis R&D CenterSlide 15

16 doc.: IEEE 802.11-12/0032r0 Submission IPv6-MAC Address Subelement Subelement Format –IPv6-MAC Address Combination –This subelement is used for reducing NDP packet exchanges. January 2012 Hitoshi Morioka, Allied Telesis R&D CenterSlide 16

17 doc.: IEEE 802.11-12/0032r0 Submission IPv6 RA Subelement Subelement Format –MAC Address field contains the MAC address of the router that transmits the Router Advertisement. –Router Advertisement field contains a Route Advertisement message defined in RFC4861 including IP header but without MAC header. January 2012 Hitoshi Morioka, Allied Telesis R&D CenterSlide 17

18 doc.: IEEE 802.11-12/0032r0 Submission Fragmentation HLS Request/Response and all subelements can be fragmented. –Example (400octest of IPv4 Configuration and 1 combination of IPv4- MAC address in HLS Responses) January 2012 Hitoshi Morioka, Allied Telesis R&D CenterSlide 18 IPv4 Config. subelement IPv4-MAC Addr. subelement 402 12 HLS Resp. Header 3 IPv4 Config. subelement IPv4-MAC Addr. subelement 12 HLS Resp. Header 3 IPv4 Config. subelement 254 150 HLS Resp. Header 3 IPv4 Config. subelement IPv4-MAC Addr. subelement 12 HLS Resp. Header 3 IPv4 Config. subelement 254 150 IPv4 Config. subelement IPv4-MAC Addr. subelement 402 12 APSTA

19 doc.: IEEE 802.11-12/0032r0 Submission IPv4 Behavior AP transmits IPv4ConfigDuringAssoc flag in Beacon/Probe Response. STA transmits Assoc. Req. to AP with IPv4 flag in HLS Request element. –This is NOT DHCP message. Just indicate to request IPv4 configuration. –Optionally the STA can include IPv4 Configuration subelement to specify which parameters are required. The AP authenticate the STA. After successful authentication, the AP assigns an IPv4 address of the STA and other parameters. Then the AP transmits Assoc. Resp. with HLS Response element with IPv4 Configuration subelement and IPv4-MAC Address subelement to the STA. –The IPv4 Configuration subelement may include the IPv4 address of the STA, the netmask, the IPv4 address of the default router, the IPv4 addresses of the DNS servers. –The IPv4-MAC Address subelement may include the IPv4 address-MAC address pair of the default router. The STA setup its IPv4 layer. January 2012 Hitoshi Morioka, Allied Telesis R&D CenterSlide 19

20 doc.: IEEE 802.11-12/0032r0 Submission IPv6 Behavior AP caches the latest RA. –AP can know DHCPv6 is required or not by receiving RA. AP transmits IPv6ConfigDuringAssoc flag in Beacon/Probe Response. STA transmits Assoc. Req. to AP with IPv6 flag in HLS Request element. –This is NOT DHCP/RS message. Just indicate to request IPv6 configuration. –Optionally the STA can include IPv6 Configuration subelement to specify which parameters are required. The AP authenticate the STA. After successful authentication, the AP assigns an IPv6 address of the STA and other parameters. Then the AP transmits Assoc. Resp. with HLS Response element with IPv6 Configuration subelement and IPv6 RA subelement to the STA. –The IPv6 Configuration subelement may include the IPv6 addresses of the STA, the prefix length, the IPv6 addresses of the DNS servers. –The IPv6 RA subelement may include the IPv6 address and MAC address of the router. The STA setup its IPv6 layer. January 2012 Hitoshi Morioka, Allied Telesis R&D CenterSlide 20

21 doc.: IEEE 802.11-12/0032r0 Submission Implementation Example for IPv4 January 2012 Hitoshi Morioka, Allied Telesis R&D CenterSlide 21 WLAN driver IP stack Userland WLAN driver DHCP client DHCP server Configure to use IPv4 FILS Setup STAAPDHCP Server IEs Trigger DHCP Message DHCP

22 doc.: IEEE 802.11-12/0032r0 Submission Questions & Comments January 2012 Hitoshi Morioka, Allied Telesis R&D CenterSlide 22

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