“5G”一詞近期成了社會(huì)關(guān)注的焦點(diǎn)，而工信部也已宣布將發(fā)放5G商用牌照，意味著5G技術(shù)會(huì)很快進(jìn)入我們的生活。那么，你對(duì)5G技術(shù)又了解多少呢？

Your Internet experience is ruined when the net speed is too slow—it takes so long to open a web page and the reality show youre watching stops every few minutes. That can be very annoying.

網(wǎng)速太慢時(shí)，你的上網(wǎng)體驗(yàn)就會(huì)很糟糕——好長(zhǎng)時(shí)間才能打開一個(gè)網(wǎng)頁，看個(gè)真人秀每幾分鐘都要卡一下。這確實(shí)很煩人。

But it could be a thing of the past. On June 3， 2019 the Ministry of Industry and Information Technology announced that China would issue licenses for the commercialization of 5G. It means major telecom carriers will start to provide 5G services.

但這一切都將成為過去。2019年6月3日，工信部宣布將發(fā)放5G商用牌照。這意味著基礎(chǔ)電信運(yùn)營(yíng)商將開始提供5G服務(wù)。

What is 5G？ What difference will it really make to our lives？

那么，什么是5G？它又會(huì)給我們的生活帶來什么樣的變化呢？

What is 5G？

什么是5G？

The “G” in “5G” refers to the generation of mobile network technologies. 1G let us talk to each other， 2G let us send messages， 3G gave us mobile data and the Internet， and 4G made all of these things faster.

“5G”中的“G”指的是移動(dòng)通信網(wǎng)絡(luò)技術(shù)的時(shí)代。1G能讓我們與他人打電話交談，2G能讓我們發(fā)信息，3G為我們提供了移動(dòng)數(shù)據(jù)和互聯(lián)網(wǎng)，4G令上述所有功能更快速。

Now 5G promises much faster data download and upload speeds， and more stable connections. This means that you will be able to download an entire HD movie in seconds and only experience a short delay between sending and receiving data. For example， when you have a video chat with your friend， there is generally a 100 to 200 milliseconds delay with 4G， but 5G will reduce the delay to 1 millisecond or less， which is almost real time.

現(xiàn)在，5G有望帶來更快的數(shù)據(jù)上傳下載速度，以及更穩(wěn)定的網(wǎng)絡(luò)連接。這意味著你能在幾秒之內(nèi)下載完一部高清電影，發(fā)送和接收數(shù)據(jù)之間只存在一點(diǎn)較短的延時(shí)。比如，當(dāng)你和朋友視頻聊天時(shí)，在4G網(wǎng)絡(luò)下大概會(huì)有100到200毫秒的延時(shí)，而5G網(wǎng)絡(luò)則會(huì)將延時(shí)縮短至1毫秒甚至更短，幾乎接近實(shí)時(shí)通信。

What changes will 5G bring us？

5G會(huì)給我們帶來什么改變？

According to The Straits Times， 5G will be able to improve many advanced technologies， such as driverless cars， wearable devices and entertainment.

據(jù)《海峽時(shí)報(bào)》報(bào)道，5G能夠促進(jìn)許多先進(jìn)技術(shù)，如無人駕駛汽車、可穿戴設(shè)備以及休閑娛樂體驗(yàn)。

With a 5G network， the short delay in information exchange will allow driverless cars to run more safely， as they will be able to communicate in real time and avoid potential dangers. Meanwhile， 5G-enabled wearable devices will keep doctors constantly updated on the health status of their patients and alert them immediately if theres something wrong. Besides， VR games will become more popular with 5G. The short delay of 5G will make the games feel even more real.

在5G網(wǎng)絡(luò)下，信息交換的短延時(shí)會(huì)令無人駕駛汽車在行駛時(shí)更為安全，因?yàn)檐囕v能夠?qū)崟r(shí)交換信息，避免潛在危險(xiǎn)。與此同時(shí)，使用5G網(wǎng)絡(luò)的可穿戴設(shè)備能隨時(shí)向醫(yī)生們提供病人的最新健康狀況，并在出現(xiàn)問題時(shí)即時(shí)通知醫(yī)生。除此之外，隨著5G的發(fā)展，虛擬現(xiàn)實(shí)游戲?qū)⒏軞g迎。5G的短延時(shí)會(huì)令游戲體驗(yàn)更加真實(shí)。

Does 5G have any disadvantages？

5G有任何缺點(diǎn)嗎？

According to the BBC， though 5G will make our lives more convenient， it will not be perfect.

據(jù)英國(guó)廣播公司報(bào)道，盡管5G會(huì)令我們的生活更加方便快捷，但這一技術(shù)并不完美。

For one thing， 5G will not “travel” far. On 4G networks， you can be 10 kilometers away from the nearest transmission base and barely lose signal. But 5G will only cover about 300 meters， meaning that we will need more transmitters so that we can get signals. And in order to use 5G， we will have to buy new products specifically designed for 5G that are currently expensive.

一方面，5G網(wǎng)絡(luò)的傳輸距離并不遠(yuǎn)。你能在距離最近的傳輸基站10千米處使用4G網(wǎng)絡(luò)，幾乎不會(huì)出現(xiàn)沒有信號(hào)的情況。但5G的覆蓋范圍大約只有300米，這意味著我們需要更多的發(fā)射器才能獲得信號(hào)。而為了使用5G網(wǎng)絡(luò)，我們也需要購買專為5G設(shè)計(jì)的昂貴新產(chǎn)品。