Blog

Have you ever wondered how it feels like eating on a plane but you have fear of flying? Now, if you live in Singapore, there is the possibility to satisfy that whim remaining glued to earth! Singapore Airlines, suffering like all other airlines from the pandemic and the dramatic decrease …

OK, it is now time to consider a “real” wireless network! Smartphones, complex IoTs or aggregates of IoTs (like vehicles), have been addressed to as “terminals”. In fact, it is now a few years that in several occasions this name no longer apples. Think at the tethering supported by your …

Wireless networks are everything but wireless. The “core” part is basically undistinguishable from the wireline network, however, their edges are quite different, of course, comprising base stations, poles, antennas … but still very “fixed” indeed. For many years these edges have been “passive”, dumb. Their role was to convert the …

Last year, 2019, there was a lot of excitement at the news that a team of researchers demonstrated superconductivity property (flow of electricity with no resistance) at a temperature of -23° Celsius (-9.4° Fahrenheit). Superconductivity is the holy grail in energy use, it gets as close as you can to …

All considered it may be unsurprising that devices like smartphones are driving service evolution. What is more surprising is that they are also driving the “physical network” evolution! Watching the iPhone 12 presentation I noticed the statement of Hans Vestberg, Chairman and CEO of Verizon, stating that “5G just got …

6. Network Architecture The telecommunication network, seen from a mile above, has kept evolving towards a flatter and flatter architecture. It was very hierarchical in the beginning, a call from Siena to Philadelphia would have to be routed via Florence, Rome, London, New York to reach its destination in Philadelphia. …

Imagining a truck with no steering wheel, no windshield and no pedal, actually a truck with no cab is difficult, at least to me. Yet this is what Einride is proposing for the future of freight hauling. You can see the prototype in the photo. A prototype that should hit …

Power issues are not limited to devices,  they are also affecting the wireless network operation cost. As shown in the previous post we have seen an increasing demand of power in base stations as we moved to more advanced cellular systems. Increased bandwidth, MIMO and smart antennas, all require more …

5. Power requirement All this increase in processing on the device side goes hand in hand with the increase of power demand, yet such increase, as pointed out in previous posts, is not manageable because increased power means: increased dissipation in form of heat (second law of thermodynamics); increased drain …

All communications is based on coding. You talk into your smartphone and your voice is sampled, converted into bits that are transported by the network to your correspondent smartphone that will provide to convert them back into the sound of your voice. Well, it is not identical to your voice …