Re: [STDS-802-16] 11GHz LE Charter
Dear Zion and all:
Communications between BS over the backbone to support transmission and
scheduler synchronization between BS is part of the considered scope for the
new Management and Network SG in 16. Specifically, we already have to
address this issue to support mobile SS in some 1x1 and 1x3 frequency reuse
models that are expected to employ more sophisticated centralized management
systems.
Current 16e mobile work only covers licensed frequency use, and only single
operator networks. I would think synchronization in LE use would be
problematic given the relative unlikelihood of different BS having backbone
communications on which to negotiate and manage synchronization.
I think more robust mechanics for supporting indirect BS synchronization
through SS detection and reporting of 'hidden node' conflicts might be a
better mechanism in LE use.
Thanks,
Phil
----- Original Message -----
From: "Zion Hadad" <zionh@runcom.co.il>
To: <STDS-802-16@listserv.ieee.org>
Sent: Wednesday, March 24, 2004 10:46 AM
Subject: Re: [STDS-802-16] 11GHz LE Charter
> Dear all
> As far as I understand, what Marianna asked is related to synchronization
of
> frame size and Up link to Down link ratio (etc) in TDD between BSs.
> Co-existence is part of 16 and more specific part of 802.16c and not in
> 802.16d. I believe that the out come for this study group will be
> recommendation for amendment to 802.16c or some informative text of how BS
> should be communicate in order to synchronize their frames, which is
> communication in higher layers with time stamp, ...etc.and it is out of
the
> PAR scope.
> probably we will have tables of BW reference clocks, GI sizes which will
> bring the PHy's to synchronize in time. I think that we have to add that
to
> 802.16c
> Zion
>
>
> -----Original Message-----
> From: owner-stds-802-16@listserv.ieee.org
> [mailto:owner-stds-802-16@listserv.ieee.org]On Behalf Of Roger B. Marks
> Sent: Tuesday, March 23, 2004 6:55 PM
> To: STDS-802-16@listserv.ieee.org
> Subject: Re: [STDS-802-16] 11GHz LE Charter
>
>
> Duncan,
>
> Your note is inaccurate. The Working Group vote to establish an ad
> hoc committee on coexistence in licensed exempt bands did not affect
> the "outcome of the whole meeting". Marianna did state that her view
> regarding the P802.16-REVd comment resolution was contingent on the
> establishment of the ad hoc committee. However, her view regarding
> the comment resolution was nothing more than her view. It did not
> affect the "outcome of the meeting" or even the outcome of the
> P802.16-REVd ballot. That ballot's approval rate now stands at 59-2.
> That's sufficient to proceed to recirculation. 58-3 would have
> worked too.
>
> Roger
>
>
> At 08:36 +0000 04/03/23, Duncan McClure wrote:
> >Dear Marianna,
> >
> >Seriously, I must congratulate you (Alvarion) on your ability to swing
the
> >outcome of the whole meeting in order to establish an ad-hoc group. In
some
> >parts of the world this is known as blackmail.
> >
> >Anyway, you seem to have a good ad-hoc charter planned.
> >
> >Good luck,
> >Duncan
> >
> >>From: Marianna Goldhammer <marianna.goldhammer@ALVARION.COM>
> >>To: STDS-802-16@listserv.ieee.org
> >>Date: Mon, 22 Mar 2004 18:36:50 +0200
> >>
> >>Dear Colleagues,
> >>
> >>At the closing Plenary of IEEE 802.16 Session #30, we have
> >> decided to set up an Ad-Hoc correspondence group for
> >> study of co-existence in below 11GHz LE (License Exempt)
> >> bands and make a recommendation to the WG, at May 802.16
> >> meeting.
> >>
> >>I would propose, as charter for this group:
> >>
> >>1. Identification of scenarios in which interference between cells
> >> can cause disruption in service; will be taken into account both
> >> "access providers" installations and private networks;
> >>
> >>2. Identification of techniques which may mitigate the problem,
> >> such as dynamic frequency selection, time co-ordination,
> >> creation of interference free periods, etc;
> >>
> >>3. Identification of minimum set of interoperability requirements that
> >> will reduce the service disruption problems.
> >>
> >>I would propose to adopt as parameters for this study, to be agreed
> >> by the Ah-hoc group:
> >>
> >>- Operating frequency: 5.8GHz, under FCC UNII rules;
> >>- System architecture: P-MP;
> >>- BST antennae: omni, sectorial;
> >>- SS antennae: omni, directional;
> >>- Behaviour under interference: according to radio parameters specified
> >> in 802.16-REVd.
> >>
> >>- Co-ordination assumptions:
> >> - none
> >> - frame duration and start time synch
> >> - Rx/Tx duty cycle alignment
> >> - air protocol
> >> -etc.
> >>
> >>In order to kick-off this activity, please let me know if you wish
> >> to participate. I will create a special e-mail list.
> >>
> >>Regards,
> >>
> >>Marianna
> >>
> >>Chair - IEEE 802.16 Ad-hoc for LE Co-existence
> >>
> >>
> >>
> >> Marianna Goldhammer
> >> Director - Strategic Technologies
> >>
> >> Alvarion, Ltd.
> >>10 years of wireless expertise
> >>
> >> 21 HaBarzel Street
> >> P.O.Box 13139, Tel Aviv 61131, Israel
> >> Tel: (972)- 3 -6456241/6262
> >> Fax: (972) -3 -6456204
> >>
> >> Email: marianna.goldhammer@alvarion.com
> >>
> >> www.alvarion.com
> >>
> >>
> >>
> >>
> >> Marianna Goldhammer
> >> Director - Strategic Technologies
> >>
> >> Alvarion, Ltd.
> >>10 years of wireless expertise
> >>
> >> 21 HaBarzel Street
> >> P.O.Box 13139, Tel Aviv 61131, Israel
> >> Tel: (972)- 3 -6456241/6262
> >> Fax: (972) -3 -6456204
> >>
> >> Email: marianna.goldhammer@alvarion.com
> >>
> >> www.alvarion.com
> >>
> >>
> >>This mail was sent via mail.alvarion.com
> >>
>
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