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New developments that have been announced by the FCC in the United States have rekindled the decade-old debate on the use of the so-called 'white spaces' in broadcast spectrum that are to be used for telecoms purposes. In September 2010, the FCC adopted a Second Memorandum Opinion and Order that updated the rules for unlicensed wireless devices that can operate in broadcast television spectrum at locations where that spectrum is unused by licensed services. This unused TV spectrum is commonly referred to as television 'white spaces'. The rules allow for the use of unlicensed TV devices in the unused spectrum to provide broadband data and other services for consumers and businesses. more
Elon Musk packed a lot about SpaceX and Starlink into a 32-minute interview at the 2021 Mobile World Congress and ended with a discussion of his motivation and the roles of his three companies - SpaceX, Starlink, and Neuralnk. Let's start with the SpaceX and Starlink update and conclude with the philosophy and motivation. (Scroll to the end of the post for the video of the interview). more
It is time to recognize the Internet as a public good - freely available like other basic infrastructures such as roads and sidewalks. In 1989 Tim Berners-Lee created the World Wide Web by taking advantage of open connectivity available among universities and research institutions. Today we see that same open connectivity within corporations, in our homes, and on university campuses. more
BBC technology correspondent Rory Cellan-Jones must be hoping that his near neighbours don’t decide they want a larger family. He recently spent ages setting up a high-speed wireless network at home, documenting the whole tortuous process on the BBC Technology blog, but all his hard work could apparently be ruined by a single baby listener in the neighbourhood... more
Nemertes Research has released a report on the future of the Internet infrastructure. The key finding from the report is that bandwidth demands are exceeding infrastructure investment, especially at the access layer. We noted in the project that users may begin to see the impact of degraded application performance as early as 2010. We also noted that the planned investments in Internet infrastructure are insufficient to meet growing demand. more
Since the first undersea cable was completed in 1858 to deliver telegraph messages between the US and England, we've had an extensive network of undersea cable networks that enable communications between continents. Earlier this year there were 378 undersea fiber cables in place that stretch over 745,000 miles. Here's an interactive map that shows all of the cables... What's most intriguing about the map is that there are a few cities around the world where numerous cables terminate. more
I had the opportunity this week to take part in the National Cable & Telecommunications Association (NCTA) Cable Show - a traveling show in the U.S. that took place in Washington, DC, this year... In the U.S. capital, it's difficult to avoid the topic of politics and its effects on the telecommunications industry. This was especially true during The Cable Show in light of recent news around communication monitoring, wiretapping, and how far it's going. more
The principle behind Chromecast is probably the magic formula that is needed to finally revolutionise television watching. Google's latest product was launched yesterday... TV revolution didn't come from the traditional broadcasters or their suppliers. Everything developed by them has been aimed more at protecting their traditional business than at looking for completely new opportunities - truly new TV innovations will most certainly come from the direction that the broader market has taken since the arrival of the smartphones and the tablets. more
The numbers are big. Official figures quoted at the recent 21st annual China Content and Broadcasting Network (CCBN) conference indicate that China has 400 million TV households, of which 210 million subscribe to cable TV (CATV). Of these cable subscribers, 140 million receive digital service while the rest are still on analog systems. This means that the country's CATV network is still largely a one-way network, limiting the growth of on-demand and interactive services. more
I'm such an industry nerd that I sometimes read customer reviews of large ISPs just to see how the public perceives them. Most ISPs have more negative reviews than positive ones, and that's to be expected since people are more likely to complain when things go wrong than give praise when things are working as promised. more
As we approach four months since the WHO declared COVID-19 to be a pandemic, and with lockdowns and other restrictions continuing in much of the world, it is worth reflecting on how the Internet has coped with the changes in its use, and on what lessons we can learn from these for the future of the network. The people and companies that build and operate the Internet are always planning for more growth in Internet traffic. more
As if we didn't have a long enough list of problems to worry about, Lumen researchers at its Black Lotus Labs recently released a blog that said that it knows of three U.S. ISPs and one in India was hacked this summer. Lumen said the hackers took advantage of flaws in software provided by Versa Networks being used to manage wide-area networks. more
Policies such as network neutrality and minimum speeds for broadband seek to limit the ability of carriers to favor some applications over others. Well-intended though these initiatives are, they still leave users negotiating for passage while confined to the carriers' "pipes". In this scenario, end users remain limited by how the incumbents choose to build their broadband content delivery networks. more
The London Times article (and a similar one in the Guardian) are based on dangerous misinformation. The net isn't slowing down, and nearly no technical experts believe major "overload" problems likely on the backhaul, core, or decent local loop... Net traffic per user, as documented by Odlyzko and Cisco, has been growing at about 35-40% the last five years, and that growth rate is flat and possibly down the last two years. The net has been able to handle the increase without price increases, much less overload, because the primary and rate limiting equipment (switches, routers, WDM, etc.) have simultaneously been going down at a similar 35-40%. Moore's Law is bringing costs down and capacity up at a remarkable rate. more
In a unanimous vote today, the FCC has given a green light for the use of "white spaces" in order to deliver broadband connections as super "WiFi". From today's announcement: "The Federal Communications Commission today took steps to free up vacant airwaves between TV channels -- called "white spaces" -- to unleash a host of new technologies, such as "super Wi-Fi," and myriad other diverse applications. This is the first significant block of spectrum made available for unlicensed use in more than 20 years. TV white space spectrum is considered prime real estate because its signals travel well, making it ideally suited for mobile wireless devices." more
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