Just fantasy: The ubiquitous high-speed connection

4G is being deployed and 5G is starting. At this stall, many vendors describe the blueprint for future mobile networks: providing high-speed connections everywhere. The manufacturer's vision looks good, but it's unreal. There is no wrong ideal, what kind of ideal is more important. If the ideal can not be achieved, do not need to achieve, in fact, is a fantasy, is a big bluff. And a lot of good things, a step forward and then become a fallacy, such examples, numerous. Indeed, the ubiquitous connection has become a necessity for people, like water and electricity, without which it is inconvenient. Now people have been accustomed to using a variety of communication methods, convenient and fast connection, information transfer and exchange. But do we need a ubiquitous high-speed connection? I've made an analogy, the freeway is fast, but do we want the ubiquitous highway? Open the door and see the freeway? In the same way, gas stations, convenience stores and even toilets are convenient for our travel, do we hope that petrol filling stations, convenience stores and even toilets are everywhere to satisfy our readily accessible desires? Now it seems that human desires have no end. Desire drives everything, and it reverses everything. Is it only necessary for us to satisfy all the desires of all? Even: to satisfy the desires of the very few, regardless of the cost? The ubiquitous high-speed connection is a minority desire. From what is currently seen, only high-definition video business is the ubiquitous high-speed connection of the propellant. Some time ago in order to promote the 4G, Hangzhou has made a 4G bus line, high-definition video business is one of the highlights, and then the whole country to emulate. I've also been on that line and found that there are only a handful of videos on the bus. My own experience is that if you hold a flat-screen video, the acceleration of deceleration and turbulence along the way is enough to make people's vision collapse. In fact, the bus is not a good place to demonstrate high-definition video. There are also occasions for viewing high-definition video, such as subways or railroads and ships. But what is the proportion of High-definition video users in these places in the network, and is there any need to lay out the full coverage of mobile broadband to meet the needs of individual users? In other words, there is no ubiquitous high-speed connection, high-definition video business is not done? Not necessarily, many people watch video is to watch TV dramas, movies, entertainment programs, of course, do not rule out learning, these video content can be downloaded to the local, there is no need for real-time viewing. The so-called temporary spur of the situation, is purely rare. The download process can still be done via a mobile network, just in a specific area. Breaking news is really a good real-time video application, the best way or the use of radio, whether it is CMMB or MBMs, than unicast way more reasonable, more economical. In fact, the ubiquitous high-speed connection not only the demand is misty, the real implementation will also want the operator's life. The ubiquitous high-speed connection is the full coverage of mobile broadband, and the higher the rate of mobile broadband, the greater the cost of the system: the power and speed of logarithmic relationship, increase 10 times times the speed need to increase 1000times the power; increasing bandwidth is a shortcut, but bandwidth is always the bottleneck of resources, and large bandwidth means high power consumption. Finally we see, need more sites to achieve full coverage, perhaps 10 times times even a hundredfold of the existing site, site layout and the interference between the site will be a big problem, not to mention the cost of construction and future maintenance costs. Are we ready to get along with a lot of base stations around here? Human desires are limitless, but the implementation of technology has boundaries. Back to the sky, we need just ubiquitous connections, not ubiquitous high-speed connections.