History of 802.11s Standardization

September 2007 doc.: IEEE 802.11-07/2408r0 History of 802.11s Standardization Date: 2007-09-12 Authors: Name Donald Eastlake 3rd Affiliations Motorola Address 111 Locke Drive, Marlboro, MA 01752 USA Phone +1 508-7867554 email Donald.Eastlake@motorol a.com Submission Slide 1 Donald Eastlake 3rd, Motorola September 2007 doc.: IEEE 802.11-07/2408r0 Abstract A snapshot of the history of the 802.11s standardization effort. Submission Slide 2 Donald Eastlake 3rd, Motorola September 2007 doc.: IEEE 802.11-07/2408r0 History of 802.11s Standardization In the beginning • Nov 2003 – 802.11 ESS Mesh Study Group created. • Jan 2004 – 802.11 ESS Mesh Study Group recommends a charter (PAR) and justification (5 Criteria) for an 802.11 ESS Mesh Networking Task Group. • Mar 2004 – Approval of 802.11s PAR (Charter) and 5 Criteria (Justification) by 802 Executive Committee for forwarding to IEEE-SA. • May 13, 2004 – 802.11s approved by IEEE-SA. Submission Slide 3 Donald Eastlake 3rd, Motorola September 2007 doc.: IEEE 802.11-07/2408r0 History of 802.11s Standardization Main Points of Initial PAR (Charter) • Produce an amendment to the 802.11 standard creating a Wireless Distribution System with automatic topology learning and dynamic wireless path configuration. – – – – Target number of packet forwarding nodes: ~32 Support unicast and broadcast/multicast traffic. Use 802.11i security or an extension thereof. Extensible routing to allow for alternative forwarding path selection metrics and/or protocols. – Use the 802.11 four-address frame format or an extension. – Interface with higher layers and connect with other networks using higher layer protocols. – Limited to the Extended Service Set (AP meshing) case. Submission Slide 4 Donald Eastlake 3rd, Motorola September 2007 doc.: IEEE 802.11-07/2408r0 History of 802.11s Standardization In the beginning • Jan 2005 – Call for 802.11s proposals issued. 35 notices of intent to submit a proposal were received. Call referenced the following documents developed by 802.11s: • Usage Models • • Functional Requirements and Scope Comparison Categories and Informative Checklists • July 2005 – 15 proposals actually presented. • Mar 2006 – One Joint Proposal, supported by Motorola, presented and unanimously (vote 119-0-3) adopted as the baseline for the 802.11s standard. Call for informal technical comments issued with 1 May 2006 deadline. Submission Slide 5 Donald Eastlake 3rd, Motorola September 2007 doc.: IEEE 802.11-07/2408r0 History of 802.11s Standardization Use Cases • Initial list: – Residential, Office, Campus/Community/Public Access, Public Safety, and Car-to-Car. • 802.11s voted to remove the car-to-car case and add a military case. The Military and Public Safety cases were almost merged. Final result: 1. 2. 3. 4. 5. Residential Office Campus/Community/Public Access Public Safety Military Submission Slide 6 Donald Eastlake 3rd, Motorola September 2007 doc.: IEEE 802.11-07/2408r0 History of 802.11sofStandardization Affiliations of authors the Joint Proposal Proposal Sponsors – – – – – – – – – – – – – Airespider ATR BAE Systems BelAir Cisco Systems ComNets NTT DoCoMo Firetide Fujitsu Hewlett Packard Huawei Intel InterDigital • • • • • • • • • • • • • ITRI Kiyon Kyushu University MITRE Mitsubishi Electric Motorola NextHop NICT Nokia Nortel NRL NTUST Oki Electric • • • • • • • • • • • • PacketHop Philips Qualcomm Samsung Siemens Sony STMicroelectronics Swisscom Texas Instruments Thomson Tropos Wipro Submission Slide 7 Donald Eastlake 3rd, Motorola September 2007 doc.: IEEE 802.11-07/2408r0 History of 802.11s Standardization Getting to the First Letter Ballot • May 2006 – 283 informal comments received from 18 people. • Nov 2006 – The informal comments having been resolved, 802.11s Draft D1.0 was sent to its first Letter Ballot. • Jan 2006 – D1.0 failed with a 48.3% approval required and a little over 5,700 comments. (Most 802.11 Drafts fail their first Letter Ballot and some fail 2 or 3 times before achieving 75% approval and getting into recirculation.) Submission Slide 8 Donald Eastlake 3rd, Motorola September 2007 doc.: IEEE 802.11-07/2408r0 History of 802.11s Standardization Letter Ballot Comment Resolution Total Resolved Unresolved Editorial Resolved Unresolved Technical Resolved Unresolved Dec-06 Jan-07 Mar-07 May-07 Jul-07 Sep-07 0 3,001 4,296 4,818 5,230 tbd 5,713 2,712 1,417 895 483 tbd 0 2,195 2,468 2,474 2,474 tbd 2,841 646 7 0 0 tbd 0 806 1,828 2,344 2,756 tbd 2,872 2,066 1,410 895 483 tbd Submission Slide 9 Donald Eastlake 3rd, Motorola September 2007 doc.: IEEE 802.11-07/2408r0 History of 802.11s Standardization Letter Ballot Comment Resolution Total Resolved Unresolved Editorial Resolved Unresolved Technical Resolved Unresolved Dec-06 Jan-07 Mar-07 May-07 Jul-07 Sep-07 0.0% 52.5% 75.2% 84.3% 91.5% tbd 100.0% 47.5% 24.8% 15.7% 8.5% tbd 0.0% 77.3% 99.7% 100.0% 100.0% tbd 100.0% 22.7% 0.3% 0.0% 0.0% tbd 0.0% 28.1% 56.5% 72.4% 85.1% tbd 100.0% 71.9% 43.5% 27.6% 14.9% tbd Submission Slide 10 Donald Eastlake 3rd, Motorola September 2007 doc.: IEEE 802.11-07/2408r0 History of 802.11s Standardization Resolution of PAR Defect • • The Joint Proposal and all Drafts ignored PAR restriction to AP meshing. This could cause problems late in the process. Jan 2007 – Motion to amend PAR fails in 802.11 WG at a lightly attended closing plenary by one vote (74.82% approval) due to inadequate socialization in advance. Mar 2007 – Motion to amend PAR passes in 802.11 WG (91.34% approval). July 2007 – PAR amendment approved unanimously by 802 Executive Committee. 22 August 2007 – PAR amendment approved by IEEE-SA. • • • • • Current PAR http://standards.ieee.org/board/nes/projects/802-11s.pdf Submission Slide 11 Donald Eastlake 3rd, Motorola September 2007 doc.: IEEE 802.11-07/2408r0 History of 802.11s Standardization • New PAR allows Mesh Point capabilities to be orthogonal to Access Point capabilities. 802.11 Stations Resolution of PAR Defect Mesh Points Mesh Access Points Access Points Submission Slide 12 Donald Eastlake 3rd, Motorola