Your internet experience is ruined( 破 坏 ) when the net speed is too slow – it1 so long to open a web page and the show2you're watching stops every few minutes. That may make you mad. But it could be a thing of the past. 3June 3, 1999, the Ministry of Industry and Information Technology said that China4going to give out licenses for the commercialization (商业化) of 5G.
5G promises much5data download ( 下 载 ) and upload speeds. This means that you will be able to download6 movie in seconds and only experience a short delay ( 延 迟 ) between sending and receiving data. For example, when you have a video chat with your friend, there is generally a 100 to 200 milliseconds ( 毫 秒 ) delay with 4G, but 5G will reduce( 减 少 ) it to 1 millisecond or less, which is almost real time.
With a 5G network, the short delay in information exchange will allow driverless cars to run more safely, 7they will be able to communicate in real time and avoid 8into other cars. At the same time, 5G-enabled wearable devices will keep doctors constantly ( 持续地) updated on the health condition of their patients and the patients can be9 immediately if there's something wrong.
Of course, there are some disadvantages. For one thing, 5G will not "travel" far. On 4G networks, you can be 10 kilometers away from the nearest transmission base (传输基地) . But 5G will only cover about 300 meters. But engineers will never10 solving these problems.
