[CUWiN-Dev] G and A and realworld throughput

Stelios Valavanis stel at onShore.com
Thu Jul 14 11:09:20 CDT 2005


shall i assume that the cuwin is no different and that this would be 
applicable to cuwin mesh?

On Wednesday 13 July 2005 09:50 pm, listsubs0506 wrote:
> A couple of interesting articles re: throughput in multi hop wireless
> networks:
>
> http://www.compliancepipeline.com/159905154
>
> http://black.csl.uiuc.edu/~prkumar/ps_files/exp.pdf
>
> I see that a co-author of the second article (which is cited by the
> first) is P.R. Kumar of the University of Illinois Coordinated Science
> Laboratory, 1308 West Main Street, Urbana IL  <prkumar at uiuc.edu>.
>
> By the way, at risk of going a little off-topic, those articles were
> cited in footnotes 27 and 28 of a Request for Reconsideration recently
> filed with the FCC by Intel Corporation / Redline Communications, Inc. /
> Alvarion, Inc.
>
> They are asking the FCC to reverse its recent decision that would enable
> community wireless and pretty much everyone else to have access to 3650
> - 3700 MHz spectrum in urban areas such as Albuquerque, Atlanta, Austin,
> Boston, Chicago, Cleveland, Columbus, Detroit, Houston, Kansas City, Las
> Vegas, Milwaukee, New Orleans, Oklahoma City, Phoenix, San Antonio, and
> Tucson. That particular Request doesn't ask the FCC to reverse its grant
> of widespread access in less heavily populated areas areas, though other
> recent requests for reconsideration do ask for half of the band even in
> rural areas to be granted to exclusive licensees.
>
> Intel et al state:
>
> "Petitioners believe that exclusive licensing in the Top 50 MSAs will
> promote optimal quality of service ("QoS") and strong business
> investment certainty in these markets; such results are not possible
> with self-coordinated contention protocols based on the mutual
> obligaiton to cooperate."
>
> "Specifically, Petitioners believe that two blocks of 25 megahertz each
> should be exclusively licensed in these markets."
>
> In other words, Stelios, you would almost certainly be locked out in
> Chicago. And the community wireless folks here in the Boston area would
> also almost certainly be locked out if the Intel Request for
> Reconsideration is successful (I imagine in theory, the city could be
> given one of those licenses and then permitted to sublease... but I
> don't think the petitions for reconsideration mention possibilities
> other than assignment by auction).
>
> I'd be curious whether any of you are in touch with P.R. Kumar and able
> to determine whether he thinks his research has been properly used in
> support of the arguments presented in the Petition. Some of those
> arguments are remarkably dismissive of Wi-Fi and other systems that
> might be used in the band, e.g., footnote 22:
>
> "In this regard, Petitioners note that Wi-Fi works because approximately
> a dozen users (i.e., a very limited number of users) are sharing 90 MHz
> of spectrum. In contrast, the FCC's new rules for the 3650 MHz band
> would allow dozens, or even hundreds, of users to share a mere 50 MHz.
> That many users trying to access this limited  amount of spectrum would
> be detrimental to transmission capacity -- causing it to degenerate to
> something less than broadband or even no transmission at all."
>
> The full Intel Request for Reconsideration is available at:
> http://makeashorterlink.com/?N2F612D6B
>
> or you can find the full set of about 9 Requests for Reconsideration in
> that FCC Proceeding by entering 04-151 in the top left hand corner
> search at www.fcc.gov... I'd be glad to send summaries/extracts of them
> to anyone who's interested but doesn't have time to plow through them all.
>
>   - Steve Ronan
>
> !DSPAM:42d5d330165145636610986!

-- 
_______________________________________
stel valavanis  http://www.onshore.com/


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