1 / 10

802.11af Liaison Report

802.11af Liaison Report. Authors:. Date: 2012-05-17.

vmercer
Télécharger la présentation

802.11af Liaison Report

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. 802.11af Liaison Report Authors: Date: 2012-05-17 Notice:This document has been prepared to assist IEEE 802.19. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Prabodh Varshney, Nokia

  2. Abstract • Liaison report from 802.11af as presented to 802.19. Prabodh Varshney, Nokia

  3. 802.11af Status before May Meeting • Group had telcos on March 20, 27, April 3, 10, 17, May 1, and May 8. • Regulatory discussions from FCC’s latest changes (third M&O FCC-12-36A1 released on April 5th) regarding absolute values for out of band emission levels, Ofcom(TV tuner measurements based on actual field data in UK) and SE43 (currently creating a working document towards complementary Report to ECC Report 159). • PHY discussions continued on impact to channel bandwidth based on FCC’s changes on emission masks, but no specific plan yet on contributions. Ofcom has not finalized its ACLR values yet. • Discussions on Cambridge trial, especially the highlight there on rural internet use cases, and protection requirements for PMSE and DTT. • FCC is considering to open up more unlicensed or lightly licensed spectrum especially on 3550-3650 MHz. • High level submission on down-clocking and channel bandwidth proposal again in May F2F, and would like to get decision. • Meeting with TGac PHY people to estimate ETA for TGaf PHY submissions • Regulatory report of the Japanese TVWS will be presented in May face to face meeting. . Prabodh Varshney, Nokia

  4. 802.11af Status before May Meeting • Plan for May meeting: • Approve meeting and teleconference minutes • Review the results of LB171 • Approve draft P802.11af D1.07 as the working draft • Officer Elections • Review of the progress since March • Regulatory update • PHY planning • PHY Comment resolution • Plan for July meeting and teleconferences • Task Group Officers • Chair: Rich Kennedy (Research In Motion) • Vice-chair and Editor: Peter Ecclesine (Cisco Systems) • Vice-chair and Recording Secretary: Zhou Lan (NICT). . Prabodh Varshney, Nokia

  5. Current 802.11af Status • Elected task Group Officers • Chair: Rich Kennedy (Research In Motion) • Vice-chair and Editor: Peter Ecclesine (Cisco Systems) • Vice-chair and Recording Secretary: Zhou Lan (NICT). • Approved speculative draft 1.07 as working draft. • Document 699 (Broadcom and Qualcomm) : PHY design proposal approved by group. • The PHY for one TVWS channel (6MHz, 7MHz or 8MHz) is based on the 40MHz 128FFT VHT PHY as defined in clause 22. • For 6 MHz TVWS channels: tone spacing is 41.66 kHz with sampling frequency of 5.33 MHz. • For 8 MHz TVWS channels: tone spacing is 55.55 kHz with sampling frequency of 7.11 MHz. • Support for multi-channel coexistence: the pre-VHT fields shall be placed around the middle of each TVWS channel irrespective of the number and location of the channels used for transmission. Prabodh Varshney, Nokia

  6. Current 802.11af Status • Regulatory update: • FCC released 3rd memorandum opinion and order and following changes (as compared to 2nd MO & O) were made: • Modifyed rules to establish a maximum HAAT for a fixed device antenna of 250 meters (from 76 meters) and maintain the limit for fixed device antenna height AGL at 30 meters. • Modifyed the rules for adjacent channel emission limits to specify fixed values, rather than vary the limit relative to the in-band power. • Increased the PSD limit for each category of TV bands device by 0.4 dB, which will allow a TV bands device to operate at the maximum permissible power in a bandwidth of 5.5 MHz instead of 6 MHz. • These are final rules in the sense that they cannot be petitioned anymore. • Ofcom VNS (Voluntary National Standard): It is applicable for UK only. They are bringing all this to ETSI so that it can be adopted by rest of EU. Trying to get this done by end of June. Prabodh Varshney, Nokia

  7. Current 802.11af Status • Regulatory update (contd): • Japan: White Space Promotion council objective is to expand nation-wide white space utilization. They have created a working group for coexistence (between primary and secondary users) in white space applications. WG has published report in March 2012. Services permitted in TV white space with conditions summarized by White space utilized broadcasting system WG. It is not license-exempt (need to register with MIC and they decide if service can be used). Main use case right now is for broadcasting but usage for broadband internet access and sensor network may increase in future. Prabodh Varshney, Nokia

  8. Current 802.11af Status • Document 602r0 defines the specification development process for the group. • BandIDin clause 8 needs to be added for TVWS. Then define in MAC sections (clause 8, 9, 10) MAC features which are valid for TVWS with BandID set as TVWS MAC. • Documents 647r2, 648r1 and 649r1 (LG) provided comment resolution related to CSM, information value field and editorial. Prabodh Varshney, Nokia

  9. Plan for July Meeting • Approve minutes from Atlanta and teleconferences • Clause 23 submission • Complete LB 171 comment resolution • Create Draft 2.0 and ask the WG for approval to begin a new Letter Ballot • Regulatory update • Teleconferences: Weekly on Tuesdays starting May 29th. Time: 21:00 ET for up to 2 hours. Prabodh Varshney, Nokia

  10. Official TGaf Timeline • Initial Working Group Letter Ballot: January 2011 • Second Working Group Letter Ballot: July 2012 • Recirculation Letter Ballot: November 2012 • Form Sponsor Ballot Pool: February 2013 • Initial Sponsor Ballot: March 2013 • Recirculate Sponsor Ballot: July 2013 • Final WG/EC Approval: March 2014 • RevCom/Standards Board Approval: March 2014 Prabodh Varshney, Nokia

More Related