IEEE P802.11 - Task Group p - MEETING UPDATE
Status of Project IEEE 802.11 Task Group p
Wireless Access in Vehicular
Lee Armstrong, Chair
Wayne Fisher, Editor
This Task Group will define enhancements to 802.11 required to support Intelligent Transportation Systems (ITS) applications.
The P802.11p specification accomplishes the following:
• Describes the functions and services required by
WAVE-conformant stations to operate in a rapidly varying environment and exchange messages either without having to join a BSS or within a WAVEBSS.
• Defines the
WAVEsignaling technique and interface functions that are controlled by the IEEE 802.11 MAC
This amendment to IEEE Std 802.11™ is based on extensive testing and analyses of wireless communications in a mobile environment. The results of these efforts were documented in
Please see document, 11-07-2045-00-000p-Development of DSRC/
Sponsor Ballot #2 of P802.11p D11.0 closed on 4/7/10 with 99% affirmative votes and no comments. All conditions for presenting this amendment to 802.11 have been met. The necessary package has been prepared and submitted to IEEE and this has been added to the June RevCom agenda.
As a result, there are no more meetings scheduled for TGp, either face-to-face or via teleconference. The Tg will not be terminated yet in the unlikely need to address any issues that arise as a result of the RevCom meeting or the IEEE editing process.
March 2010, Orlando, Florida
Goals for March\ 2010: Comment resolution for SB#1 and prepare for recirculation ballot
Sponsor Ballot #1 of P802.11p D10.0 passed with 96% affirmative with 21 comments. The teleconferences leading up to the March meeting allowed for much of the discussion required as a part of comment resolution to take place prior to the meetings. During the Orlando meetings we were able to complete the resolution of all comments and the editor was able to complete all of the corresponding changes to the draft. As a result, we voted to go to recirculation ballot #2 as soon as possible. Teleconferences will resume after this ballot closes if needed.
The 802 ExCom gave conditional approval to take P802.11p to the RevCom June meeting. Such condition being that all conditions required for RevCom are satisfied.
January 2010, Los Angeles, California
Goals for January\ 2010: Comment resolution for SB#0 and prepare for recirculation ballot
Sponsor Ballot #0 passed (93.4% affirmative) with 156 comments. The teleconferences leading up to the January meeting allowed for much of the discussion required as a part of comment resolution to take place prior to the LA meetings. During the Los Angeles meetings we were able to complete the resolution of all comments and the editor was able to complete all of the corresponding changes to the draft. As a result, we voted to go to recirculation ballot as soon as possible after the January meeting. Teleconferences will resume after this ballot closes.
November 2009, Atlanta, Georgia
Goals for November\ 2009: Comment resolution for LB154 and prepare for Sponsor Ballot
Letter Ballot 158 passed with no new comments. This has allowed the start of Sponsor Ballot #0 which will close on 22 November. Since the ballot has not yet closed, the November meeting will be spent in resolving those comments received to date. Comment resolution will continue during the weekly teleconferences after this meeting.
September 2009, Waikoloa Hawaii
Goals for September\ 2009: Comment resolution for LB154 and prepare for Sponsor Ballot
LB154 was completed with 38 comments. Prior to and during the week, most of these comments were withdrawn and some of the “disapprove” votes were changed to “approve”. The result was a total of 15 comments and an approval percentage of 91.8%. Of the 15 remaining comments, only one required a change to the document (it was the result of an editing error and impacted only a single word) and thus another recirculation ballot is required before we can go to Sponsor Ballot. A recirculation of D9.0 will begin shortly after the close of this week’s meetings. It is reasonable to expect that there will be no new comments that would prevent us from going to Sponsor Ballot before the November meeting.
July 2009, San Francisco
Goals for July\ 2009: Comment resolution for LB151 and prepare for Sponsor Ballot
LB151 was completed with 180 comments, of which 95 were editorial. During the week, with 5 time slots plus one ad-hoc slot available, we managed to complete the resolution of all comments thanks to the advance work done during our weekly teleconferences. A recirculation of D8.0 will begin shortly after the close of this week’s meetings. In anticipation of having a “clean draft” recirculation possible after the September meeting, we requested and obtained conditional approval for going to Sponsor Ballot before the November meeting.
May 2009, Montreal
Goals for May\ 2009: Comment resolution for LB144 and prepare for Recirc Ballot
LB144 was completed with 249 comments, of which 105 were editorial. During the week, with 7 time slots available, we managed to complete the resolution of all comments thanks to the advance work done during our weekly teleconferences. A recirculation of D7.0 will begin shortly after the close of this week’s meetings.
March 2009, Vancouver
Goals for March\ 2009: Comment resolution for LB141 and prepare for Recirc Ballot
Completed resolution of LB141 comments. Current draft at end of meetings was D5.02. Voted to start a recirculation ballot of D6.0.
January 2009, Los Angeles
Goals for January\ 2009: Comment resolution for LB141 and prepare for Recirc Ballot
LB141 of Draft 5.0 passed with 121 comments recieved. We made
major progress between the teleconferences before the meeting and during the 6
time slots of meetings this week. At the end of the week, there were about 59
outstanding comments remaining to be resolved. The most significant issue deals
with the basic question of : is a STA able to "communicate outside the
scope of a BSS" while that STA is still joined with a
BSS?There was lots of discussion, but no agreement. Until there is agreement on this issue many of the remaining comment resolutions cannot be finalized.
November 2008, Dallas
Goals for November\ 2008: Complete comment resolution for LB125 and go to Recirc Ballot
Comment resolution completed, and Draft 5.0 approved for ballot. Weekly teleconferences (1500 ET every Thursday) will be suspended during the ballot period but will resume after the close of the ballot so that we can begin to work on resolving the new comments expected. .
September 2008, Waikolo
Goals for September\ 2008: Complete comment resolution for LB125 and go to Recirc Ballot
Comment resolution completed, but some objection because with
more time some different results might have occurred. The
Goals for March 2008: Continue comment resolution for LB125
Of the 489 comments received from LB125, 257 were editorial
and assigned to the editor to resolve. During the week a major event occurred
in that the appropriate resolution to all comments relating to the
Goals for May 2008: Begin comment resolution for LB125
LB 125 passed with 4989 comments received. Because the ballot closed so close to the start of this week’s meetings, the majority of the time spent this week was on comment triage with discussion of the most critical comments. Weekly teleconferences (1500 ET every Thursday) will be held to begin comment resolution.
Goals for March 2008: Complete comment resolution for LB110 and go to Letter Ballot
Comment resolution continued. Some resolution proposals were
initiated and discussed during the multiple Ad-Hoc teleconferences held before
the meeting. During the meeting, these were discussed with a number of motions
resulting in the creation of draft D3.05 being produced at the end of the
meetings. At the close of the meeting, it was found that there were a couple of
comments that were not formally resolved but these were considered to minor to worry
about (primarily simple editorial). The motion to move D3.05 to Letter Ballot
passed and a 30 day LB will begin as soon as possible after the meeting. Weekly teleconferences will continue (with a
probable delay in starting until initial LB results are received). A
face-to-face Ad_Hoc meeting
is planned for the week of April 29 in
Goals for January 2007: Complete comment resolution for LB110 and go to Letter Ballot
• 547 comments total
• 207 resolved prior to this week
• 410 resolved this week (some re-do from previous meetings)
• Essentially finished LB110 comment resolution, a very small number not formally completed
• Closed with Draft D3.03
Resolution of the 547 comments continued. There were a total of 207 comments resolved prior to the meeting, an additional 410 were resolved this week. Some comments were addressed more than once such as when the resolution of a comment required us to go back and reconsider a previous resolution. The TG is essentially finished with LB110 comment resolution (the operative word is “essentially” as Draft D3.03 which is the result of the meetings is felt to be ready for letter ballot in spite of a few random items that might still be addressed. Due to a lack of time, the TG did not get to reach a point where the importance of any remaining issues could be identified and discussed, thus there was no motion to go to Letter Ballot. Weekly teleconferences will continue to identify and propose resolutions to any remaining comments or issues.
Goals for July 2007: Continue LB110 comment resolution
Comment resolution continued, with a total of 107 comments resolved this week. There were many more that were nearly ready.to vote on and complete, but time did not permit all submissions for presentation to be addressed. Weekly teleconferences will continue to develop additional resolutions.in preparation for the January meetings.
September 2007, Waikola
Goals for July 2007: Begin comment resolution for LB110
LB110 failed by only two votes. Resolution of the 547 comments began with the primary order of activities being to get organized and prioritized. Major catagories of comments, mostly by clause number, were assiged to Individuals who would be responsible for them. About 100 were considered closed at the end of the week (mostly editorial). Weekly teleconferences would be held to work on the more difficult technical issues to be resolve.
July 2007, San Francisco
Goals for July 2007: Aapprove for Letter Ballot
All issues remaining from LB92 have been resolved and are reflected in P802.11p D2.06. The TG approved requesting that the WG proceed with a Letter Ballot of this draft with the goal of moving it towards sponser ballot.
May 2007, Montreal, Quebec
Goals for May 2007: Resolve Letter Ballot 92 Comments
The most significant remaining issue from LB92 (reflected in
approximately 200 comments) had to do with the use of a
March 2007, Orlando, Florida
Goals for March 2007: Resolve Letter Ballot 92 Comments
During the March meeting, 174 Comments addressed, 134
Comments Resolved. One proposal for resolving the many comments (over a
hundred) regarding the use of a
Of the original 1060 comments, 649 remaining to be resolved. Draft 2.01 is current working draft.
January 2007, London
Goals for January 2007: Respond to Letter Ballot 92
LB92 failed with 1060 comments received. The TG accepted Draft 2.0 as the working draft. The comments were organized by topic and assigned to individuals for resolution. About 500 considered simple editorial and assigned to editor to resolve. Established general principles for resolving most of the technical issues.
November 2006, Dallas, Texas
Goals for November 2006: Approval for Letter Ballot of Draft 2.0
As a result of the approval of Draft 1.3 at the September meeting and the editors directives for further changes that were approved at that meeting, the editor had prepared a new draft 1.4. The Task Group started the session by voting to approve this new draft, Draft 802.11p_D1.4 as our working document. There were 7 presentations during the 4 session during the week, resulting in motions that resulted in additional changes to be made to the draft. The posted draft at the conclusion of the meeting, which includes all of the week’s approved changes, is Draft 802.11p_D1.5. Feeling that this draft represents the completion of comment resolution from LB81 as well as all additional improvements identified since then, the TG moved to forward this draft to the WG for Letter Ballot. The WG approved the motion and a Letter Ballot will commence as soon as possible for this draft that will therefore be renumbered to Draft 802.11p_D2.0.
An overview of
* Knut Evensen (part 1 PDF)
* Dr. Hans-Joachim Fischer (part 2 PDF)
* Knut Evensen (part 3 PDF)
* Dick Roy (
A ZIP file of the Powerpoint presentations is also available
Goals for September 2006: Review and resolve comments from LB 81, prepare for Letter Ballot
The Task Group started the session by using Draft P802.11p_D1.1 as the working document. The previous Clause 20 was moved into Clause 17 and Annex I and Annex J. The PICs were greatly simplified. As a result of general improvements, the page count has gone from 59 to 35. The extent of the additions and deletions made it unrealistic to use revision marking in the new draft. The meeting minutes can be found in document 11-06-1556-01-000p-melbourne-september-2006-wave-minutes-doc-doc.doc. The posted draft at the conclusion of the meeting was Draft 802.11p_D1.3.
Goals for July 2006: Review and resolve comments from LB 81
The Task Group started the session by voting to have the previous draft, P802.11p-D1.0, that failed to receive the required 75% approval be the base draft for moving forward. The group then began to formal comment resolution with discussion and motion on Clause 20. There were 6 presentations during the 3 session during the week. Teleconferences to continue resolving the comments from the letter ballot. It is hoped that the revised draft will be ready for approval during the September session.
Goals for March 2006: Prepare for LB81 comment resolution process, Review and resolve comments from LB 80
The LB89 passed, allowing the letter ballot of draft D1.0 (LB 81) to begin. There were enough comments received during LB80 to develop and test our approach to comment resolution (borrowing heavily from other groups experiences). We evaluated approximately 20 LB80 comments during the week, verifying that TGp is ready to being responding to the many hundreds of comments expected on LB81. Because all of the LB80 comments that we worked on in March will also appear as LB81 comments, the resolutions agreed to will give us a head start for the next meeting. Some of the comments proposed changes to the draft that were generally agreed to in principle, but final judgment could not be given until the final explicit editor’s instructions are available. An ad-hoc group was formed to evaluate the impact of responding to these comments and report at the next meeting. This group will be conducting teleconference meetings over the next two months.
Goals for January 2006: Distribute 11p draft 0.25, obtain comments prior to meeting. Review and resolve comments. Prepare 802.11p amendment for WG letter ballot
The draft D0.25 was reviewed, together with the comments received prior to the meeting. All remaining D0.24 and all new D0.25 comments were resolved. The editor will produce draft D0.26 (which will become D1.0 with a letter ballot) based on the resolutions to these comments.
The TG understood 802.11 policies and procedures article 2.9.2 (specifically item 3) allowed going to letter ballot since the current draft and all changes to it had been properly voted on and made available to the WG. However, during the plenary, after making the motion to go to letter ballot, item 4 was invoked: “Any voting member can bring a motion requesting that, after the editor has completed the draft, work be approved by a fifteen day confirmation letter ballot of the draft before submission to WG letter ballot.” It was then necessary to retract our motion for letter ballot and instead make a motion to have a 15 day confirmation vote to be followed by a 40 day letter ballot if the confirmation passes. The confirmation vote can occur only after the new draft .26 is available and the voting list has been updated (which is at least 2 weeks from the end of the meeting).
The impact is that it is impossible to have any letter ballot results before the March meeting. Since the confirmation vote is simply a yes/no response, and the letter ballot will most probably have just started at the time of the March meeting, unless the unexpected happens, TGp will not meet in March.
Goals for November 2005: Distribute 11p draft 0.24, obtain comments prior to meeting, Review and resolve comments, Prepare 802.11p amendment for WG letter ballot
The draft D0.24 was reviewed, together with the comments received prior to the meeting.
There were a total of 73 comments received for D0.24 and 19 remaining unresolved from D0.23 (some were withdrawn by the commenter, explaining the different count then what was reported last month). During the November meeting, all of the remaining D0.23 comments were resolved and 43 of those pertaining to D0.24. Several comments that were expected to be approved quickly instead produced lengthy discussion in the meeting which resulted in our failure to resolve all ballots and move the draft to the Letter Ballot stage.
The editor will produce draft D0.25 for posting and another round of comments solicited from the members. A teleconference is planned for December 13 to review proposed comment resolutions. Additional teleconferences may occur as needed before the January meeting. Notice of such teleconferences will be made using the 802.11 e-mail reflector. It is hoped that all comments can then be resolved in such a manner that the draft can be approved to go to letter ballot thereafter. Going to WG Letter Ballot in January 2006 does look like a high probability.
Goals for September 2005: Distribute 11p draft 0.23, obtain comments prior to meeting, Review and resolve comments, Prepare 802.11p amendment for WG letter ballot
The draft D0.23 was reviewed, together with the comments received prior to the meeting.
There were a total of 107 comments received for D0.23, of these we were able to address 74 before we ran out of time. Of these, 65 were totally resolved, 9 addressed but still open. This left 33 comments that were not addressed.
As a result of addressing these comments, there are a large number of discrete edits to the document. The extent of these changes, plus the number of comments left unresolved, means that it will be at least November before we can consider moving to Letter Ballot.
The editor will produce another draft for posting by October 14. Additional comments are to be submitted to the editor no later than November 4 so that they can be consolidated for discussion at the next meeting. At least one teleconference is expected before November to review proposed comment resolutions. Notice of such teleconferences will be made using the 802.11 e-mail reflector. It is hoped that all comments can then be resolved in such a manner that the draft can be approved to go to letter ballot thereafter. Based on the experiences of the past two meetings, the best estimate for going to WG Letter Ballot is now January 2006.
Goals for July 2005: Distribute 11p draft, obtain comments prior to meeting, Review and resolve comments, Prepare 802.11p amendment for WG letter ballot
The draft D0.22 was reviewed, together with the comments received prior to the meeting. Almost all of the comments were completely resolved but we ran out of time before completing them all. The WRSS carryover from the previous the meeting resulted in clarification and wording that satisfy the TG members. This should bring closure on this issue.
With resolutions identified for almost all comments, the editor will produce another draft for posting by August 5. Additional comments are to be submitted to the editor no later than September 5 so that they can be consolidated for discussion at the next meeting. It is hoped that all comments can be resolved in such a manner that the draft can be approved to go to letter ballot thereafter.
Goals for May 2005: Distribute 11p draft, obtain comments prior to meeting, Review and resolve comments, Prepare 802.11p amendment for WG letter ballot
The draft D0.20 was reviewed, together with the 75 comments received prior to the meeting. Most of the comments were completely resolved but there were some that will require additional investigation to result in suggested modifcations to the document. The WRSS review that took place prior to the meeting failed to result in wording that would satisfy the TG members. An ad-hoc meeting during the week produced a clarification of what was causing the problem (an inability to succiently state the requirements), and an approach for satisfying another concern with WRSS which was the perceived advantages versus the benefits of this function. An action item for resolving this before the next meeting was assigned. Another action item was created to evaluate the relationship with 802.11j to verify that there are no inconsitencies between the two documents. The other issue that resulted in an action item was to resolve comments regarding testability of some parts of the specifications.
It is hoped that the resolution of these comments will result in a draft which is suitable for WG ballot after the July meeting. The next draft will be prepared and be available for TG commenting by June 13.
Goals for March 2005: Distribute 11p draft, obtain comments prior to meeting, Review and resolve comments, Prepare 802.11p amendment for WG letter ballot
The draft D1.2 was not completed on schedule, thus the comments received prior to the meeting were not as extensive as was planned. Not all TG participants were able to submit comments prior to the meeting. There were a total of 129 comments received, of which 93 were completely resolved leaving 36 open to be resolved at the next meeting. After resolving all editorial comments that did not require extensive TG discussion, the comments were addressed in order of sensitivity or potential controversy that might be expected. The result is that we should be able to resolve the 36 open comments at the May meeting. Many of the comments were resolved by a decision to delete multiple clauses that do not properly belong in 11p as they are a part of a higher layer standard IEEE P1609. The result of these deletions is that the 11p document is considerably simplified.
There was one comment regarding the WRSS that will require additional discussion. A suggested rewording of this clause will be prepared and a teleconference will be scheduled for April 6 to discuss the proposed resolution of this comment.
Goals for January 2005: Respond
It was verified that there is no problem or conflict with
other aspects of 802.11 if the On-board units (OBUs) periodically changed their
A draft amendment was presented and is available on the web site. There were a number of initial comments that require TG discussion and approval (non-editorial). These were presented to the TG, discussed, and recommended modifications to the draft were identified for many of these. For those comments or open issues that could not be resolved during the meeting, an action item list was prepared that identifies individuals responsible for providing inputs to the editor and a schedule for completion of the revised draft in advance of the March meeting. The editor will post the revised draft at least one week before the next meeting and notify all TG members when this is done.
Goals for November 2004: Prepare 802.11p amendment
The editor was provided with specific input and requests for changes to the sample document that was presented at the meeting. The resulting document will then be posted as the 11p draft.
During the meeting, a proposal was made for two enhancements
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