The maximum rate of 5G is 10Gbps per second, and the maximum theoretical rate of 4G is 100Mbps, which means that 5G is a hundred times faster than 4G technology; and the theoretical download speed of 5G network is 100Mbps, while the download speed of 4G network is 100Mbps. The speed is 20.3Mbps, and the 3G network download speed is 9.1Mbps, which means that under the 5G network, it only takes 1 second for us to download a high-definition movie.
The operating environment of this tutorial: Windows 7 system, Dell G3 computer.
What is 5G?
5G is the industry term for the new wireless cellular network that replaces the previous 4G LTE standard, just as 4G replaced 3G. 5G stands for “fifth generation” – it is the fifth major version of mobile phone technology since the inception of cellular phone networks in the early 1980s.
Under ideal conditions, 5G is designed to be much faster than 4G LTE technology for devices like smartphones. But mobile operators also hope to use 5G to deliver fast mobile internet to other devices, such as connected cars, smart home devices and Internet of Things (IoT) devices. It might even replace your wired home internet connection.
To use 5G, you need a device (such as a smartphone) that supports it, with special hardware inside it. Existing 4G or LTE devices cannot be upgraded to 5G via software updates unless they contain 5G-compatible radio hardware.
How fast is 5G?
In order to meet the needs of diversified application scenarios of 5G, the key performance indicators of 5G are more diversified. ITU has defined eight key performance indicators of 5G. Among them, high speed, low latency, and large connections have become the most prominent features of 5G. The user experience rate reaches 1Gbps, the latency is as low as 1ms, and the user connection capability reaches 1 million connections/square kilometer.
While 4G has a maximum theoretical speed of 100 megabits per second (Mbps), 5G has a maximum speed of 10 gigabits per second (Gbps). That means 5G could be a hundred times faster than current 4G technology — at its theoretical maximum speed, anyway.
The theoretical download speed of 5G network is 100Mbps, the download speed of 4G network is 20.3Mbps, and the download speed of 3G network is 9.1Mbps. This means that under the 5G network, it only takes 1 second for us to download a high-definition movie.
It’s not just throughput either. 5G promises significantly reduced latency, which means faster load times and greater responsiveness when doing anything on the internet. Specifically, the spec promises a maximum latency of 4 milliseconds for 5G, compared to 20 milliseconds for 4G LTE.
The peak theoretical transmission speed of the 5G network can reach 10GB per second. The current speed of 4G LET can only reach a maximum of 75Mbps. The transmission speed of the 5G network is hundreds of times faster than the 4G network. times. Under a relatively good 5G network environment, a 1GB file can be downloaded in 1-3 seconds, basically no more than 10 seconds. The details are determined by factors such as the 5G network coverage at the location and the performance of the 5G mobile phone.
Summary:
Compared with the previous 4G, the peak speed of 5G is at least 10 times faster than the previous 4G. In other words, the download speed must be at least several hundred Mbits per second.
The minimum standard for 5G is that the download speed must reach the Gbps level, that is, the network speed must reach a minimum of 100M per second.
In addition, the network delay must be reduced from the previous dozen seconds to less than a few milliseconds.
How does 5G work?
5G utilizes a number of technologies to try and achieve these fast speeds. There is more than one innovation at play, and 5G promises innovations that will be rolled out over time. IEEE Spectrum Magazine does a great job of explaining many of the technical details in more depth, but here's a quick summary.
In addition to traditional cellular radio spectrum, the new standard uses entirely new radio spectrum bands from 4G. To achieve very high speeds (theoretical speeds we mentioned), 5G utilizes "millimeter waves," broadcasting at frequencies between 30 and 300 GHz, rather than the sub-6 GHz bands used in the past. These were previously only used for communications between satellites and radar systems.
But as mentioned above, millimeter waves cannot easily pass through buildings or other solid objects, so 5G must also take advantage of "small cells" - tiny base stations that can be placed every 250 meters or so in dense urban areas. These provide better coverage in these locations.
These base stations also use "massive MIMO." MIMO stands for "Multiple Input Multiple Output." You might even have a home wireless router with MIMO technology, meaning it has multiple antennas that can be used to communicate with several different wireless devices at once, rather than quickly switching between them. Massive MIMO uses dozens of antennas on a single base station. They also use beamforming to better direct these signals, directing wireless signals into beams pointed at devices and reducing interference to other devices.
There are also future plans for 5G base stations to operate at full duplex, meaning they will be able to transmit and receive simultaneously on the same frequency. Today, they have to switch between transmitting and listening modes, slowing things down. This is just a snapshot of some of the technologies being deployed to make 5G faster than any previous wireless standard.
Yes, existing evidence shows that 5G is safe.
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