Re: Update about draft-petrescu-ipv6-over-80211p-01.txt
Alexandru Petrescu <alexandru.petrescu@gmail.com> Wed, 05 March 2014 19:28 UTC
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Date: Wed, 05 Mar 2014 20:28:24 +0100
From: Alexandru Petrescu <alexandru.petrescu@gmail.com>
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To: ipv6@ietf.org
Subject: Re: Update about draft-petrescu-ipv6-over-80211p-01.txt
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I would like to ask whether somewhere exists some form of encouraging text saying that IP _is_ allowed on the control channel in the 5.9GHz band used by IEEE 802.11p. Because, During the presentaion in 6MAN WG about IPv6-over-802.11p I said, if I recollect correctly, that FCC forbids the use of IP on the control channel by FCC. I got direct and indirect private comments about the validity of such statement. I may have been wrong, but not entirely. Maybe it would have been safer to say that FCC _and_ IEEE forbid that: FCC defines what is a control channel in the publicly available document '2004 "Report and Order, Before the Federal Communications Commission Washington", D.C. 20554, FCC 03-324', and IEEE defines what goes on these channels in P1609.4 by saying 'data frames containing IP datagrams are only allowed on service channels' - implicitely not on control channels. There is much approximation in these statements but I did my best to search these documents; and this is reflected in Appendix B of the IPv6-over-80211p document, analysis at this URL: http://tools.ietf.org/html/draft-petrescu-ipv6-over-80211p-01#page-25 Alex PS: there is some ongoing discussion about the documents P1609 not being public access; I can not do anything about that; IAB IEEE liaison manager is in discussion about this with IEEE representative and things advance. Le 27/01/2014 11:56, Alexandru Petrescu a écrit : > Hi Ray, > > Thanks for the reply. > > Le 27/01/2014 08:23, Ray Hunter a écrit : >> I have read this draft. Thanks for sharing your experiences. >> >> Would 6LoWPan RFC6775 not be more appropriate for dealing with the >> issues identified in Section 5.6, when 802.11p is operating in OCB >> mode? > > There is a similarity and a discrepancy when comparing the low-power > to the high mobility constraints of 6lowpans and vehicular networks: > both would benefit if fewer messages were sent, and still vehicle > networks are not so battery-limited as the sensors. > >> I realise that in a vehicular scenario, maintaining the mesh under >> network may prove challenging. > > I think that is right. Maintaining a mesh under is challenging in > the vehicular scenarios. > > I think RFC6775 has a form of distributing routes (router-to-router > interactions) but I doubt it describes loop avoidance, which should > be part of mesh under, right? > > The section 5.6 needs more explanation. Would you be interested? > > Also, this would be a typical IPv6-over-foo document, and such as > maybe we would not need to describe too much routing/meshing detail. > > Alex >> >> Alexandru Petrescu wrote: >>> Hello 6MAN participants, >>> >>> This is an update you about >>> draft-petrescu-ipv6-over-80211p-01.txt: what happened with it >>> since November last year? >>> >>> - slight textual modifications about one author affiliation. - >>> announced on v6ops and on 6lo. Received some private comments >>> about its usefulness and where to discuss it. >>> >>> Please comment on this draft. >>> >>> http://tools.ietf.org/html/draft-petrescu-ipv6-over-80211p-01 >>> >>> "Transmission of IPv6 Packets over IEEE 802.11p Networks" >>> draft-petrescu-ipv6-over-80211p-01.txt >>> >>> "In order to transmit IPv6 packets on IEEE 802.11p networks >>> there is a need to define a few parameters such as the >>> recommended Maximum Transmission Unit size, the header format >>> preceding the IPv6 base header, the Type value within it, and >>> others. This document describes these parameters for IPv6 and >>> IEEE 802.11p networks; it portrays the layering of IPv6 on >>> 802.11p similarly to other known 802.11 and Ethernet layers, by >>> using an existing Ethernet Adaptation Layer. >>> >>> In addition, the document attempts to list what is different in >>> 802.11p compared to more 'traditional' 802.11a/b/g/n layers, >>> layers over which IPv6 protocols run ok. Most notably, the >>> operation outside the context of a BSS (OCB) has impact on IPv6 >>> handover behaviour and on IPv6 security. >>> >>> An example of an IPv6 packet captured while transmitted over an >>> IEEE 802.11p link is given." >>> >>> Alex >>> >>> --- Ce courrier électronique ne contient aucun virus ou logiciel >>> malveillant parce que la protection avast! Antivirus est active. >>> http://www.avast.com >>> >>> >> > > > -------------------------------------------------------------------- > IETF IPv6 working group mailing list ipv6@ietf.org Administrative > Requests: https://www.ietf.org/mailman/listinfo/ipv6 > --------------------------------------------------------------------
- Update about draft-petrescu-ipv6-over-80211p-01.t… Alexandru Petrescu
- Re: Update about draft-petrescu-ipv6-over-80211p-… Alexandru Petrescu
- Re: Update about draft-petrescu-ipv6-over-80211p-… Ray Hunter
- Re: Update about draft-petrescu-ipv6-over-80211p-… Alexandru Petrescu