Re: [STDS-802-16] 11GHz LE Charter
Marianna,
I agree, PHY synchronization is the best solution, if it is technology
independent.
Kind regards,
Duncan
>From: Marianna Goldhammer <marianna.goldhammer@ALVARION.COM>
>Reply-To: Marianna Goldhammer <marianna.goldhammer@ALVARION.COM>
>To: STDS-802-16@LISTSERV.IEEE.ORG
>Subject: Re: [STDS-802-16] 11GHz LE Charter
>Date: Thu, 25 Mar 2004 16:29:07 +0200
>
>Zion, Phil,
>
>I will include your proposals in the document, to be base for discussion.
>
>Be aware that the BS-BS interference chapter may be relevant to TDD,
> in general.
>
>In my view, PHY synchronization is the best solution, if it is technology
> independent (Phil, please see C802.16d/04-30).
>
>Regards,
>
>Marianna
>
>P.S. I will send later today the complet analisys of BS-BS interference.
> You may see there not only inter-systems problems, but also
> intra-system problems.
>
>
>-----Original Message-----
>From: Phillip Barber [mailto:pbarber@BROADBANDMOBILETECH.COM]
>Sent: Wednesday, March 24, 2004 10:06 PM
>To: STDS-802-16@listserv.ieee.org
>Subject: 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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