题型:阅读理解 题类:常考题 难易度:普通
山东省青岛市黄岛区2020-2021学年高二上学期英语期中考试试卷
Slowly but surely, we're moving closer and closer to 5G world. From smart-home security to self-driving cars, all the internet-connected devices in our life will be able to talk to each other at lighting-fast speeds with reduced delay. Objectively speaking, the fastest 4G download speeds in the US top out at an average of 19.42Mbps. But by comparison 5G promises gigabit (千兆) speeds.
"5G is one of those heralds (使者), along with artificial intelligence, of this coming data age," said Steve Koenig, senior director of market research for the Consumer Technology Association. "The self-driving vehicle is a great emblem of this data age, and that is to say, it is a sign of time, because with one single task, driving, you have massive amounts of coming from the vehicle itself, and a variety of sensors are collecting a lost of information to model its environments as it moves. It's pulling in date from other vehicles about road conditions down the lane. It could be weather information, and also connected infrastructure (基础设施) constructors. There's lots of data behind that task, which is why we need the high speed.
And virtual reality glasses and headsets haven't yet broken the mainstream, but tech companies are joyfully betting that these devices will eventually replace our smartphones. With 5G, that could actually happen. This is notable because companies such as Apple are reportedly developing AR glasses to assist — or even replace — smartphones.
Ericsson stated at February's Mobile World Congress how smart glasses could become faster and lighter with a 5G connection, because instead of being weighed down with components, the glasses could reply on hardware for processing power.
But don't get to excited. There's still a lot of work to be down in the meantime, including various trials to make sure the radios play nicely with hardware and infrastructure construction so 5G isn't concentrated only in big cities.
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