1. Fast speed: the download rate can reach 1000 megabits per second, and the next high-definition movie only takes a few seconds, so you don't have to wait to watch a small circle. It feels like one word, "cool". The user experience rate reaches 100Mbps, which is 10 times faster than the 4G network. The rapid communication of 5G is mainly due to the use of radio waves with a frequency of more than 3000 megabytes. The original 1G communication used an analog radio signal of 45 MHz, so the number of channels (users) accommodated was small, the rate was low, only 2.4 kHz (0.0024 MHz), and only voice signals could be transmitted. It is inconvenient to lengthen the antenna (1.2 m) when using it, and the battery needs to be charged only once a day, which is stupid and big. 2G is a revolution in communication, and 900 trillion digital signals have been used. Because digital signals are ultra-energy-saving, the standby time of mobile phones is about a week, and it is also ultra-small, so you can send text messages. It is still in use until now, and it is called the mobile phone for the elderly. The transmission rate is 64 kilobits per second, that is, 64KBps (bandwidth is used for analog signals, bit rate is used for digital signals, that is, how many bits are transmitted per second, and bits are binary digital units, indicating a 0 or a 1, that is, 1 bit, and 1 byte Bps per second is equal to the rate of 8 bit bps per second). Because 3G uses the frequency of 1800 MHz, the transmission rate is further increased to 2 megabits per second, that is, 2Mbps( 1M= 1000K), so that pictures and low-definition videos can be transmitted. 4G came into being to avoid the patent barrier in Qualcomm, so that it took only 5-6 years for 3G to be replaced and become the shortest-lived generation. 4G uses a frequency of 2,500 MHz, and the transmission rate reaches 100 Mbps, which is 50 times that of 3G. It can transmit high-definition pictures and images. 5G uses a higher radio frequency, so it is faster. Up to 1 Tebbit seconds (1tbps; ; 1T= 1000M)。
2. Low delay: 2G delay is 600ms(0.6 second), 3G delay is 200ms, 4G optimal delay is 98ms, 5G delay 1 ms ... In fact, such a low delay has nothing to do with our daily calling, texting, playing WeChat, sending videos and paying by WeChat, but it is important for auto-driving, medical remote surgery and running high-speed trains. Mainly used in industrial applications.
3. Good stability, high reliability, omni-directional coverage and no dead angle: 5G uses high frequency, and the transmission distance is only 300-500 meters. In order to ensure the communication quality, it is necessary to use 4-5 times more base stations than 4G, and 5G adopts large-scale beamforming directional antenna array technology (MINO), so it will have the above advantages. Starting from 4G, in order to transmit files quickly, packet transmission technology is adopted for the transmitted files, but the packet loss rate of 4G is 2% ~ 20%, while that of 5G is less than 0.00 1%, which is highly reliable. Multi-antenna can make the signal field strength uniform everywhere and realize omni-directional coverage without dead angle.
4. Good mobility: it can be used on high-speed trains with a speed of 500km/h, which is 1.4 times higher than that of 4G networks with a speed of 350 km/h. ..
5. Internet of Everything: The connection density of 5G can reach 654.38+00,000 per square kilometer, that is, per square meter/kloc-0 (mobile phone, terminal, Internet user), so that every intelligent device can access the Internet and make the family intelligent (including your air conditioner, refrigerator, TV set, washing machine, stereo, curtain, water heater, rice cooker, gas stove and dishwasher). Will greatly change the world and life.
6. Ubiquitous online and micro-power consumption: All devices connected to the Internet are always online and can be controlled anytime and anywhere. It's called the Internet is everywhere. The micro-power consumption here refers to the micro-power consumption of terminal equipment (mobile phones, terminals, Internet users), which is caused by strong and uniform signals, not the micro-power consumption of base stations. If the power consumption of 5G network wants to reach the same coverage as that of 4G network, the total power consumption of base stations should be about 12 times that of 4G network. (The power consumption of a single base station is three times that of a 4G base station, and the number of base stations is four times.)
7. Reconfigurable security: 2G CDMA has good security performance. After several generations of improvement, 5G will have better security performance, which is not easy to be broken by hackers and has excellent confidentiality.