Wireless

LTE and Spectrum Stupidity

Mobile operators are counting on Long Term Evolution (LTE) technology to handle surging demand for mobile data access. But LTE developers made some poor choices, cutting spectral efficiency and thus driving up operator costs. LTE was envisioned as an all IP system, but the RF allocations follow the voice-centric approach of earlier generations. While LTE standards allow for either Frequency Division Duplexing (FDD) or Time Division Duplexing (TDD), all initial LTE equipment uses FDD. FDD requires two separate blocks of spectrum... more

Lessons from the O2 Network Outage: The Real Cost of Manual Processes

More than 30 million people lost their data connectivity on December 6, 2018, in the United Kingdom as O2's network suffered from a nationwide service outage. Based on several reports, the incident was caused by a human error at Ericsson, the telecoms supplier responsible for operating certain parts of the O2 network. To compensate for the downtime and tarnished reputation, the O2 management is now reportedly seeking damages of up to a hundred million pounds from Ericsson. more

Bandwidth: Why Fast is Important in a Global Economy

Bandwidth is the basic foundation for Internet traffic as a connector to everything important in our lives. Whether it is basic bandwidth for connecting to family and friends, or a super fast highway for global reach and competitiveness in the business world, bandwidth constitutes the speed at which we connect as a global presence within the expanding sphere of Internet communication. ... To understand why bandwidth is important to all Americans, including personal and business uses, we must understand the different types Internet traffic. more

Microsoft Cancels Plans to Move Its Internal Wireless Network to IPv6-Only

Microsoft has digressed from a previously announced plan to move its internal wireless guest network to IPv6-only. more

Aalyria, a Space Internet Startup With Nearly a Decade’s Worth of Intellectual Property From Alphabet

Aalyria, a new space Internet company, just burst out of stealth mode. It is based on work done on Alphabet's "moonshot" Project Loon and Alphabet transferred almost a decade's worth of technology IP, patents, office space, and other assets to Aalyria in return for an equity stake in the company. Spacetime is Aalyria's intelligent network orchestration technology, and Tightbeam is its advanced atmospheric laser communications technology. more

The New Clearwire

The new Clearwire could be game-changing, but the rules of the game may not be quite as Clearwire presents them. I have been wondering since last July whether something significant would happen in the Google/Sprint world. The deal announcement earlier this weekseems to be that key development... In a nutshell, Sprint will contribute its substantial spectrum licenses in the 2.5 GHz range and its WiMAX-related assets and intellectual property. Google, Intel, Comcast, Time Warner Cable, and Bright House Networks will invest a total of $3.2 billion. more

The Unprecedented Role of the Internet in the War in Ukraine

The impact of the Internet in the Russia-Ukraine war is unprecedented in speed and scope. The most visible example of this has been President Zelenskyy's use of social media and teleconferencing in his roles as Commander in Chief of the armed forces, a global diplomat, and a leader of the Ukrainian people. more

Amazon Project Kuiper vs SpaceX Starlink

In 2019, I wrote that Amazon would be a formidable satellite-ISP competitor. I still think so, but I didn't expect it would be over four years until they launched the first test satellites. In the meantime, SpaceX has put over 5,000 satellites in orbit and has over two million Starlink customers. Amazon has permission to launch 3,236 satellites. more

Wireless Broadband vs Fixed Broadband - The Story Continues

This never-ending story is used by opportunistic telcos and their lobbyists to confuse the issue in order to gain regulatory or political advantage. The debate is now raging again in the USA. In an attempt to talk down their monopolistic position in the market the three telcos - and this time in particular, Comcast - are claiming that real competition does in fact exist in the American broadband market, citing competition from the mobile 4G LTE services as an example. more

A Transport Protocol’s Perspective on Optimizing Starlink Performance

Digital communications systems always represent a collection of design trade-offs. Maximizing one characteristic of a system may impair others, and various communications services may choose to optimize different performance parameters based on the intersection of these design decisions with the physical characteristics of the communications medium. more

The Russian Anti-Satellite Demonstration – a Month Later

On November 15, Russia demonstrated its ability to destroy an orbiting satellite, Cosmo 1408, by hitting it with a direct-ascent rocket. In an earlier post, I noted the anti-satellite demonstration and speculated on why Russia may have done it and why the Chinese had not condemned it. In this post, I’ll look at the evolution of the resulting debris cloud and say more about the possible motivation.  more

Inevitability of Global Standards for Non-Terrestrial Spectrum Sharing

Three companies, SpaceX, OneWeb and Boeing have announced ambitious plans to put thousands of Internet-service satellites in non-geostationary low-Earth orbit (NGSO) and other companies like ViaSat and SES are currently operating hundreds of communication satellites in medium-Earth and higher, geostationary orbits. With so many satellites orbiting in different planes and at different altitudes, there are bound to be frequent "inline events"... more

iPhone 4 Highlights Mobile Problems

Making a telephone call in London has become more difficult for early adopters of the new iPhone 4. First of all the reception is rather poor. And it is not just that it is not showing the bars correctly; many users in congested mobile areas such as London receive the message 'server not available'. (As a matter of fact, this doesn't apply only to the iPhone -- it is also experienced with other smart phones.) more

SpaceX Starlink and Cuba - A Match Made in Low-Earth Orbit?

I've suggested that Cuba could use geostationary-orbit (GSO) satellite Internet service as a stopgap measure until they could afford to leapfrog over today's technology to next-generation infrastructure. They did not pick up on that stopgap suggestion, but how about low-Earth orbit (LEO) satellite Internet service as a next-generation solution? SpaceX, OneWeb, Boeing and others are working on LEO satellite Internet projects. more

SpaceX Starlink in Ukraine – a Week Later

Last week I wrote about the arrival of a truckload of SpaceX Starlink terminals in Ukraine and their potential value to government and resistance leaders. A lot has happened in the ensuing week - this is an update. Last week, using Mike Puchol's Starlink tracking service, I found that users in Kyiv would have 100 percent uptime with connections through as many as nine satellites to ground stations in Turkey, Poland, and Lithuania. more