Я вчера не успел выставить инфо, но сделаю это сейчас.
На английском, но там легко понять. Начну с частот, о которых говорил ранее.
Right now, networks need to put up 'walls' between their 4G and 5G channels. The two can't coexist closely. Later in 2020, that will change with a technology called dynamic spectrum sharing, or DSS. DSS makes the walls flexible and movable, so carriers can dynamically split channels between 4G and 5G based on demand.
What Is 5G?
All of the US carriers have now launched some form of 5G cellular network. But what exactly is 5G, and how fast is it compared with...
5G will offer much higher bandwidth and capacity than 4G services. 5G not only unlocks more wireless frequencies (space) to use between 5G NR (new radio) and mmWave (millimeter wave), it’s also designed to makes better use of what’s available between potentially many thousands of users in urban environments.
What is the difference between 4G And 5G?
Speed: 5G will offer much higher bandwidth and capacity than 4G services. 5G not only unlocks more wireless frequencies (space)...
5G is a new digital system for transforming bytes - data units - over air. It uses a 5G New Radio interface, along with other new technologies, that utilises much higher radio frequencies (28 ghz compared to 700 mhz - 2500 mhz for 4G) to transfer exponentially more data over the air for faster speeds, reduced congestion and lower latency, which is the delay before a transfer of data begins following an instruction.
5G vs 4G: what is the real difference between them?
How will 5G actually change your life? Besides being faster and more efficient than 4G, it is transforming everything from...
Using the separate bands to communicate, 5G is smarter, more energy efficient, and faster than any of its predecessors.
5G vs. 4G: What’s the Difference? | Synopsys
Population density, travel speed, and distance all affect how fast a device can communicate with a network. Many experts predict...
The primary focus and reason for needing an upgraded network is to support the growing number of devices that demand internet access, many of them requiring so much bandwidth in order to function normally that 4G simply doesn't cut it anymore.
5G uses different kinds of antennas, operates on different radio spectrum frequencies, connects many more devices to the internet, minimizes delays, and delivers ultrafast speeds.
5G vs 4G: Everything You Need to Know
Here are the major differences between 4G and 5G, plus why and how 5G outperforms existing mobile networks. Hint: 5G is better all around!
Теперь перейду к вопросу о том, что кто-то утверждал, что надо создать новую инфраструктуру, чтоб проложить связь.
Я говорил о небольших ячейках, которые можно установить в любом месте каждые несколько сотен метров?
While 4G LTE relies upon relatively few large masts that are built miles apart, 5G will require lots of small cells much closer together. These mini 5G base stations may be placed on top of streetlights or on the sides of buildings every few hundred feet in urban areas. Logistically building a network like this out is going to be a challenge, it’s going to be expensive, and it’s going to take time.
5G will undoubtedly be faster than LTE, but here’s how else it will be different
If you're uncertain what the difference between 5G, LTE, and 4G is, then you're not alone. As 5G networks begin to roll out, there's a lot of...
Об излучении и лимите я беру инфо с правительственного сайта США. Это уже к вопросу о SAR.
Working closely with federal health and safety agencies, such as the Food and Drug Administration, the FCC has adopted limits for safe exposure to radiofrequency (RF) energy. These limits are given in terms of a unit referred to as the Specific Absorption Rate (SAR), which is a measure of the amount of radio frequency energy absorbed by the body when using a mobile phone. The FCC requires cell phone manufacturers to ensure that their phones comply with these objective limits for safe exposure. Any cell phone at or below these SAR levels (that is, any phone legally sold in the U.S.) is a "safe" phone, as measured by these standards. The FCC limit for public exposure from cellular telephones is an SAR level of 1.6 watts per kilogram (1.6 W/kg).
Specific Absorption Rate (SAR) for Cellular Telephones | Federal Communications Commission
Working closely with federal health and safety agencies, such as the Food and Drug Administration (FDA), the FCC has adopted...