In fact WiFi (technically standard 802.11) and WiMAX (802.16) don't compete for broadband users or applications today. That's partly because WiFi is widely deployed and WiMAX is still largely an unfulfilled promise and partly because the two protocols were designed for very different situations. However, if WiMAX is eventually widely deployed, there will be competition between them as last mile technologies. Some people describe the difference between WiFi and WiMAX as analogous to the difference between a cordless phone and a mobile phone... more
One would think that, in 2008, the significance of the Internet and information technology would be universally acknowledged. That makes the recent news from the Presidential campaign a bit shocking. After ignoring technology issues for the past year, John McCain is poised to announce his great insight: tech policy isn't worthy of attention from the President of the United States. This is what I draw from the announcement that former FCC Chairman Michael Powell is drafting a technology plan for McCain, to be released shortly... What concerns me most is what the McCain plan apparently leaves out... more
Here's my opening remarks from Media Access Project's Innovation '08 in Santa Clara this morning. A DVD will be available shortly. This was a lively discussion, with Google and Vuze on the case. Good morning and welcome. My name is Richard Bennett and I'm a network engineer. I've built networking products for 30 years and contributed to a dozen networking standards, including Ethernet and Wi-Fi... I'm opposed to net neutrality regulations because they foreclose some engineering options that we're going to need for the Internet to become the one true general-purpose network that links all of us to each other, connects all our devices to all our information, and makes the world a better place. Let me explain. more
Cell phone carriers have seen a huge growth in wireless data usage. The iPhone is selling like hotcakes, and its users generate large amounts of traffic. Not surprisingly, as cellular providers deploy faster network technologies, users generate even more data... more
France Telecom has reported today that 3 major underwater cables were cut: “Sea Me We 4” at 7:28am, “Sea Me We3” at 7:33am and FLAG at 8:06am. The causes of the cut, which is located in the Mediterranean between Sicily and Tunisia, on sections linking Sicily to Egypt, remain unclear. Most of the B to B traffic between Europe and Asia is rerouted through the USA. Traffic from Europe to Algeria and Tunisia is not affected, but traffic from Europe to the Near East and Asia is interrupted to a greater or lesser extent (read more for country). more
Mobile WiMAX, with the release of 2×2 MIMO chips in 2008, gives WiMAX a lead of two or so years on its major competitor -- the 3GPP's LTE. However, 3G cellphones using 3GPP UMTS technologies, extended to higher speeds with HSPA, is widely used in handsets in many countries. In North America, 3GPP2 CDMA2000 and EV-DO are widely used, but these are likely to be replaced over time by LTE and to some extent WiMAX. more
Karl Bode recently wrote an excellent article highlighting the overhyping of wireless technologies. He's right, and for the last twenty years, we've been told that a world-changing wireless technology is coming soon, but none ever materialized. No wireless technology has been a bigger flop than 5G when comparing the hype to the eventual reality. The hype for 5G was amazingly over-the-top. more
With 1,675 satellites launched and 500,000 requests for service in the United States alone, SpaceX Starlink clearly leads all would-be providers of low Earth orbit (LEO) internet service to consumers. However, it is arguable that Telesat Lightspeed is in the lead, or contending for the lead with SpaceX, in non-consumer enterprise, government, mobile backhaul, mobility and rural community markets. more
I've been trying to avoid writing about the Internet as such. With as "At the Edge" I'm looking at larger issues but can't escape writing more directly about the Internet. It seems as if everyone wants a say in Internet policy without distinguishing between technical and social issues. Today the term "The Internet" or, for many simply "Internet" is more of brand than a term for a specific technology and its implications. It has become too easy to talk about the Internet in lieu of understanding. We also see the converse -- a failure to recognize "Internet" issues. more
A fellow named Paul Korzeniowski has written a very good, concise piece on the Comcast action at the FCC for Forbes, Feds And Internet Service Providers Don't Mix. He manages to describe the controversy in clear and unemotional language, which contrasts sharply with the neutralists who constantly use emotionally-charged terms such as "blocking," "Deep Packet Inspection," "forgery," and "monopoly" to describe their discomfort. more
SpaceX and OneWeb are formidable, experienced competitors in a race to become global Internet service providers using satellite constellations -- routers in space. I posted a status report on SpaceX last week, now let's look at OneWeb. OneWeb founder and executive chairman Greg Wyler has extensive experience with networking in developing nations. In 2003 his company, Terracom, signed a contract to connect Rwandan schools, government institutions, and homes. more
Handley's simulation shows that, while not as fast as an equivalent ISLL path, long bent-pipe paths would typically have lower latency than terrestrial fiber routes between the same two points. Mark Handley, a professor at University College London, has made two terrific videos based on runs of his simulation of the first – 1,584 satellite – phase of SpaceX's Starlink Internet-service constellation. I discussed the first video, which assumes that the satellites have inter-satellite laser links (ISLLs), in recent post. more
The Starlink Web site says, "Starlink is targeting service in the Northern U.S. and Canada in 2020, rapidly expanding to near-global coverage of the populated world by 2021," but the rollout will not be uniform. The initial coverage will be centered around 53 degrees latitude, and locations with unobstructed views of the sky will have an advantage. Like many folks, I wonder about coverage at my particular location in a wooded mountain area at 34.8462° N latitude. more
SpaceX began public beta testing of the Starlink Internet service in the northern US late last October. Since then, they have made many software updates based on the beta experience and have expanded the uninterrupted-coverage area by launching new satellites. By the end of the year, they had begun beta service in southern Canada and sent beta test invitations to a few UK users. The beta-eligibility area is expected to expand from the current 45-53 degree latitude this month or next. more
The Wall Street Journal reported that AT&T saw wireless networks about to drown under a deluge of data. To see YouTube content uploaded form an iPhone or Slingbox rerouting a favourite television program to your smart phone gives mobile network operators the shivers. Skype over 3G in the meantime gives sleepless nights, not because of surging megabyte floods but due to nightmares of considerable voice and roaming revenues washing away. Not easy to plan and engineer "managed transitions" under those circumstances. more
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