Archive for August, 2006


August 30, 2006

UbiquiSys – Convergence Solutions




Convergence without compromise

Today, growing numbers of users consider mobile phones their primary communication device.

Given the choice, most people will use mobile even when fixed line is available.

But major obstacles remain for people who want one number, one bill and one device for voice and data communications.

Indoor cellular coverage is often poor or non-existent. 3G deployments rarely extend beyond the regulatory minimum. Cellular/WiFi hybrids mean a limited choice of dual-mode handsets and serious QoS concerns.

UbiquiSys develops convergence solutions that enable mobile operators to speed up and fully benefit from fixed mobile substitution. Our femto-cell systems improve 2G and 3G coverage, reduce deployment costs, foster new revenue streams and drive a culture of usage for next generation services.


25 April 2006
UbiquiSys Selects picoChip Modem for its 3G HSDPA Home Access Point System

27 March 2006
UbiquiSys Successfully Demonstrates 3G HSDPA Home Access Point System

14 February 2006
UbiquiSys Solves In-building Cellular Coverage Using Today’s Standard Handsets

07 February 2006
UbiquiSys Secures Strong Funding for its UMTS
In-building Solution


powered by performancing firefox

powered by performancing firefox


Even for the Gilmor Gang, deadlines are king!

August 29, 2006

Steve Gillmor’s GestureLab » Hard Rain

I can’t tell you how lucky I am to be in the same room with these wonderful people. I won’t pretend that I don’t belong there; of course I do.

Steve Gillmor’s GestureLab » Hard Rain

But that is not enough to let things just careen forward. This past week, the show was taken off of Sirius. In the wake of Arrington’s resignation, I had decided to shut down the show and relaunch it under a new name. When Mike and I worked out the differences that had bubbled up on the show in question — you can clearly hear me baiting him into quitting, and despite what our demeanor suggests on the show, we are really good friends — the decision to resume the show as it stood was met with some bewilderment. The Sirius cancellation resulted.

Steve Gillmor’s GestureLab » Hard Rain

Adam Curry August 12th, 2006 at 4:34 am Steve, I would like to correct you on a few things. Gillmor Gang was not ‘cancelled’, in fact there is no such thing as a cancellation in our Sirius Satellite rotation. Our 4 hour block is intended to show as many sides of podcasting as possible, highlighting all kinds of programming, not necessarily from our own network. There is a rotation of programming that delivers on that promise. A number of slots in this rotation are reserved for recurring programming. The Gang had its own slot, as did Gillmor Daily *because* of the amazing talent on these shows, including yourself. The Sirius distribution model however, is an old fashioned one of linear nature, complete with time restrictions and deadlines for delivery of programming. As you know the Daily shows were removed from the lineup long ago due to lack of timely delivery, if at all. Unfortunately, the Gillmor Gang fell prey to the exact same problem. Repeats are unacceptable and unnecessary. It is your sole responsibility to produce and deliver your programming, as is the content of the programming. If you can demonstrate consistent, timely delivery of the Gillmor Gang, it will be welcomed with open arms into Sirius rotation. The same is true for Gillmor Daily. If organization of the talent for each show is a barrier, then you should consider compensating your Gang members. The production budget for your programming is considerably larger than that of a daily 4 hour satellite radio program, I suggest you allocate a portion of it towards ‘talent booking’ or production assistance. Give the Audience the respect it deserves.

powered by performancing firefox

Mesh battles, tropos wars…

August 18, 2006

Some exciting firsts” are claimed for Tropos’s new “multi-radio mesh” hotzone
hardware – some of which are going to raise eyebrows with rivals.

The new hardware is detailed in the official
  from Tropos. It quotes Bert Williams, director of marketing for Tropos,
saying: “We expect customers to mix and match the new equipment with the older
generation gear. San Francisco is a good example of how this could work. The new
5320 routers might be used to provide service in more densely populated regions,
while the older 5210 routers could be used to offer service in less populated
areas like near city parks.”

The devices, called the Tropos 5320 outdoor MetroMesh router, “use two radios
instead of one to transmit signals. One radio operates at 5GHz. This radio will
be used exclusively to link routers in the mesh. Because the 5GHz spectrum works
at a higher frequency, it offers more bandwidth. But it also has more difficulty
penetrating through walls or dense foliage. As a result, 5GHz spectrum is used
mostly in line-of-sight applications.”

So much for the official line. Comment has been mostly enthusiastic. Silicon
“The new routers may incorporate WiMax metropolitan-area wireless and even
third-generation mobile data (3G) in addition to WiFi,” attributing the quote to
the same Bert Williams. “They will be able to figure out the highest-performing
combination of links within the mesh at a given time,” the quote concluded

More models will follow the 5320 over the next year and will incorporate
other technologies, including WiMax and multiple in-multiple out (MIMO)
multi-antenna wireless LAN, Williams said. Future products could have
Evolution-Data Optimized (EV-DO) 3G capability, he said.

Silicon quotes a tame consultant, IDC analyst Godfrey Chua: “Tropos so far
has sold mesh routers with just one radio for both client access and backhaul.
That has landed Tropos behind some competitors in technology terms, but the
company has led the market for municipal Wi-Fi gear anyway, probably because of
cost.” And he considers: “The citywide wireless Internet services so far have
been aimed at the low-end and midrange consumer markets. Competitors such as
Strix Systems Inc. and BelAir Networks Inc. already sell routers with more than
one radio.”

Here’s the official line again: “The Tropos 5320, which sports best-of-breed
802.11a and 802.11b/g radios, is the first and only mesh router that can
dynamically create multi-band paths through a mesh network,” and:  “The
MetroMesh OS intelligently manages multiple radio interfaces automatically,
similar to the way a wireline router accommodates multiple Ethernet, Token Ring,
WAN and other interfaces. The interfaces provide the patented Tropos Predictive
Wireless Routing Protocol (PWRP) with additional paths from which it can choose
when maximizing end-to-end, client-server throughput.”

“Using this radio-independent approach, Tropos will quickly follow the
introduction of the Tropos 5320 with additional multi-radio MetroMesh routers
combining Wi-Fi, MIMO, WiMAX, 4.9 GHz, 3G/4G cellular and other unlicensed and
licensed radio technologies.”- press release ends.

Somewhat more restrained enthusiasm from Glenn Fleishman:
“Combined with a recent improvement that allows per-packet power level controls,
this change could produce a substantially more efficient use of spectrum; lack
of efficiency has been one of the biggest criticism of single-radio mesh
networks in general and Tropos’s system specifically.”

But his analysis is a bit rigorous: “True mesh networks require all nodes in
a cluster to use the same frequencies, which results in a single packet
occupying network time slots usually at least once, but possibly several times,
to reach a connection out of the cluster,” he says. “With a second radio,
packets could transit the mesh-only 5 GHz connections as need be, offering more
time slots to clients. (In future software releases, Tropos might support
clients on 5 GHz as well as mesh traffic.)”

And then the bit which may be over-generalising: “Tropos competitors—all of
them—use a second band primarily as capacity injection, or the layer at which
traffic from the user-facing radio in 2.4 GHz is offloaded to aggregated
backhaul through point-to-multipoint connections. Now BelAir will say that they
use intelligent switching in 5 GHz when they have two or more 5 GHz radios in a
single box, and that’s just fine. Strix has similar statements. SkyPilot uses
extremely high-gain antennas to create point-to-point limits that are isolated
in frequency and time from adjacent networks.”

The trouble with all the analyses online so far, is that they tend to ignore
the market-leading mesh technology, LocustWorld, because of two major
(irrelevant) factors. First, LocustWorld is not a standard corporate entity,
supplying its mesh technology free and only building hardware for small
customers – and second, it provides only a simplified version of the network for
most sites, but behind the scenes, it has a very sophisticated routeing

Mesh designer Jon Anderson told NewsWireless that a Locustworld mesh can, for
example, use any link from any node for any purpose. “So we can link between
wireless meshes using broadband between nodes, if that’s what we have – and if
we supply a two-radio meshbox, there’s no inherent restriction on whether one
radio channel is used for backhaul or for local meshing. The standard product
out of the box does it that way, but it can be configured how you like.”




powered by performancing firefox

WPS – new jargon, but good news for the rest of us wireless users

August 17, 2006

The plan: to make safe Wi-Fi easier: the Wi-Fi Alliance has officially announced WPS: WiFi Protected Setup.

That’s the name for its upcoming consumer ease-of-use program, formerly code named “Wi-Fi Simple Config.”

“Slated for launch in Q4 of this year, the program is planned as an optional certification based on a standardized method for security setup in home Wi-Fi networks,” said the Alliance yesterday

From Glenn Fleishman: “While individual chipmakers Atheros and Broadcom have spent some years trying to get manufacturer uptake for easier security setup, and Buffalo has long had its AOSS hardware button solution on its gear, the whole point of WiFi is that it’s mix and match. As much as vendors don’t like it, you will often find heterogeneous gear in a single household. Thus, a Wi-Fi Alliance backed initiative must take the day
in the end.”

The dream of the Alliance is to make Wi-Fi more ubiquitous. It recently revealed the results of a research survey, conducted with Kelton Research. Among key takeaway data items:

  • The Wi-Fi Lifestyle has Reached iPod Popularity. Think iPods are popular? Not compared to Wi-Fi. Eight out of ten surveyed readily volunteered that they would give up their iPod any day over their home wireless network (80* percent vs. 21 percent).
  • Phone Home? Not so Much.
    When Americans were asked which they would rather give up, their home telephone or wireless computer network, 79 percent responded that they would rather live without a home phone. Only 21 percent said they would part with their home Wi-Fi connection. Surprisingly, suburban residents – who normally may be considered to have more “homebody” tendencies than their urban counterparts – were even more likely to trade in their home phones for their wireless networks than those who live in urban areas (83 percent vs. 74 percent).
  • Honesty is the Best Policy.
    Eighty-two percent of those surveyed indicated that they do not use wireless computer networks to mask their whereabouts (vs. 18 percent who said they have, for instance, telling their boss that they were at home sick, when they were really at a friend’s house).
  • Death of the Home Office.
    It appears that the days of the traditional home office may be coming to an end. A majority of Americans (55 percent) said that at least 2-3 times a week, they worked from home – although it doesn’t mean sitting in a traditional office space. Rather, they’re working in the kitchen, living room, or even in a public space such as a coffee shop or bookstore. Interestingly, older wireless users age 40 to 64 were 10 percent more likely to “work from home” outside of a home office than younger Americans age 18-29, several times a week (42 percent vs. 32 percent).
  • One Hour for Freedom. When asked how long it took to set up current wireless computer networks at home, the average length of time was just 1 hour 8 minutes. Not much time for all the freedom the technology allows.

The Alliance research also “indicates that 43% of Wi-Fi users found that installing security on a home Wi-Fi network was moderately-to-very difficult,” said the pressure group.

powered by performancing firefox

How sad… famous for being unknown!

August 17, 2006

there it is; the NotGuyGoma web site, to go with

powered by performancing firefox

powered by performancing firefox