What Is 5G Wireless Technology?
什麼是5G無線技術？
http://www.51voa.com/VOA_Special_English/what-is-g-wireless-technology--81420.html
2019-02-15
- What is 5G? 什麼是5G? （段2-5）
- When will it be available? 什麼時候我們才能用上5G技術？（段6-12）
- What can 5G do? 5G的用處（段13-14）
- What are the security concerns? 5G有哪些安全方面的隱患？（段15-20）
1)There has been a lot of publicity recently surrounding 5G, the next generation of wireless technology for the world. But what is this technology and how might it change our lives?
最近有很多5G的宣傳，但是5G究竟是什麼、它能如何改變我們的生活？
What is 5G? 什麼是5G?
2) 5G stands for fifth generation, meaning the next step in the progression of technology to replace the current 4G system. 4G was the replacement for 3G, which came after 2G, and so on.
These systems are wireless computer networks.
5G是英文單詞第五代“fifth generation”的縮寫，意思是取代現有4G體系的技術，4G取代了3G，3G取代了2G，以此類推。
它們都是無線電腦網絡。
3）Earlier "G" systems were designed to improve mobile communication operations. Each new technology brought major improvements in speed and greatly increased network capacity.
以前的幾代體系都是設計來改善移動溝通的運行效果。每一代新技術都在速度上有了很大改善、極大提高了網絡的容納能力。
4) The new 5G system promises more of the same. It is expected to permit more users to do more things -- at a faster rate. Higher internet speeds and larger network capacity should result in better performance for device users connected to 5G.
新的5G體系能做得更好，它想讓更多用戶做更多的事情———以更快的速度。 更快的網速和更大的網絡容納率應該能給5G設備用戶帶來更好的用戶體驗。
5) However, technology experts say there is a major way that 5G is different than the earlier systems. It will move well beyond mobile network technology to affect many more devices and industries than other "G" versions.
然而，技術專家說：5G與之前的無線體系也有很大的不同。它將不僅僅是移動網絡技術，它將影響更多的設備和行業。
（5G網絡最大改進之處是它能夠靈活地支持各種不同的設備。除了支持手機和平板電腦外，5G網絡將還需要支持可佩戴式設備，例如健身跟蹤器和智能手錶、智能家庭設備如鳥巢式室內恆溫器等。）
When will it be available? 什麼時候我們才能用上5G技術？
6）Before we can all use 5G, wireless companies and phone makers will have to complete and deploy a whole new system. New phones and communication equipment must be built.
在我們能用上5G之前，無線公司和手機制造商還得完成和部署一個全新的體系，還得造好新手機和溝通設備。
7）American wireless companies have been preparing for the new system for some time. They have been creating new network equipment and buying broadcasting space to carry 5G signals.
美國無線公司已經為5G技術準備了好一段時間了。新的網絡設備正在建設中，他們正在購買載有5G信號的傳輸頻段。
8）They have built new 5G antennas to serve American cities and towns. Wireless providers will invest at least $275 billion in 5G-related networks in the United States, the industry group CTIA reported.
他們已經建好了新的5G天線，以便為美國的城鎮服務。據美國無線通信和互聯網協會（CTIA）的信息說：無線服務提供商將在美國的5G網絡上投資2750億美金。
CTIA（美國無線通信和互聯網協會）是一家成立於1984年的全球性非營利組織，迄今在推動無線以及互聯網行業發展方面發揮了積極的作用。 該機構主辦的CTIA無線通信展被認為是全球最大規模的專注於無線領域的盛會，迄今已有20餘年的歷史，展出內容涵蓋了無線行業的網絡設施、無線服務、終端用戶軟件、應用和附件、電力等各個方面。——百度百科
9）The first U.S. launch of 5G is expected to happen sometime this year. Industry experts expect it will take a few more years to go nationwide. It will take even longer to reach rural areas.
美國有望在今年內（2019）啟動第一代5G技術。行業專家預計：還需要幾年時間才能全國普及，5G技術通到鄉村還需要更長時間。
10）China is expected to launch 5G sometime in 2020, while European nations are likely to build their systems more slowly over time. 中國預計2020年啟用5G，歐洲各國架構5G體系可能會慢一些
11）In the United States, the first 5G-ready phones should be available in the first half of this year. The first 5G iPhone, however, is not expected until 2020.
美國第一代5G手機今年上半年就能上市了，第一代5G蘋果手機可能要等到2020年。
12) 4G phones will work on 5G networks, but not at 5G speeds.
4G手機可以在5G網絡上運行，但不能享受5G的速度。
What can 5G do? 5G的用處
13）Wireless industry groups say 5G will help fuel future "smart cities" by connecting sensor networks. Such networks will be able to control vehicle traffic and quickly identify streetlight outages.
無線行業團體說：通過連接傳感器網絡，5G將為未來的“智能城市”增添一份助力。這樣的網絡將能控制車流、並能快速識別路燈故障。
(outage: [ˈaʊtɪdʒ] a period of time when the supply of electricity, etc. is not working 停電（等）期間)
14）5G is also expected to connect self-driving cars and support new technologies involving virtual reality. Higher 5G speeds could also permit doctors to commonly perform remote medical operations. Factories and businesses could use 5G technology to increase automation and improve the collection of information.
5G還可能連上自動駕駛汽車、給虛擬現實等新技術提供支持。5G更快的網速也能讓醫生經常遠程做手術。工廠和商業上也能用5G技術增加自動化、改善信息收集速度。
What are the security concerns? 5G有哪些安全方面的隱患？
15）More data -- and many more kinds of data -- will be traveling across 5G networks. Much of the data could contain private details about individuals, businesses or government organizations. The increased data flow would give internet attackers a lot more possibilities to steal and misuse data.
未來會有更多的數據———各種類型的數據———經過5G網絡。好多數據可能含有個人的、企業的、政府機構的私密信息， 這麼多數據流可能給了網絡攻擊者可趁之機，偷取濫用這些數據。
16) In addition, the wider use of a 5G wireless network means any breakdown of the system would have more widespread and severe results. Such difficulties could affect public safety as well as world economic activity.
另外，5G無線網絡的普及意味著該體系的任何故障都能帶來更廣泛的、嚴重的結果。這些難關不僅可能影響公共安全，還能影響世界經濟。
17）Government system failures could create national security risks. A failure during a doctor's remotely guided operation could lead to the death of a patient. Or a network breakdown could cause self-driving vehicles to crash.
政府系統故障可能給國家安全帶來風險；醫生遠程指導的手術出現網絡問題，可能導致病人喪命；網絡癱瘓可能導致自動駕駛汽車發生車禍。
18）The 5G network has caused tensions between the United States and China. The U.S. government has urged American companies not to use Chinese technology in communications networks because of security concerns. It has also pressed other countries to ban Huawei, a Chinese telecom company, from building 5G networks.
5G網絡已經讓美國和中國的關係緊張。美國政府已經因為安全方面的擔憂，敦促美國公司不要使用中國通信技術， 它還逼迫其他國家禁止華為建5G網絡。
press：v., ~ sb (for sth) | ~ sb (into sth/into doing sth) 催促；敦促；逼迫
to make strong efforts to persuade or force sb to do sth
19）U.S. officials have long suspected the Chinese government could use Huawei network equipment to help carry out spying activities.美國官方長期懷疑中國政府用華為網絡設備、執行間諜活動。
20）Huawei has rejected such accusations. 華為否認了這些指控。
2018年12月7日，工業和信息化部許可中國電信、中國移動、中國聯通自通知日至2020年6月30日在全國開展第五代移動通信系統試驗。其中，中國電信獲得3400MHz-3500MHz共100MHz帶寬的5G試驗頻率資源；中國聯通獲得3500MHz~3600MHz共100MHz帶寬的5G試驗頻率資源；中國移動獲得2515MHz~2675MHz、4800MHz~4900MHz頻段的5G試驗頻率資源，其中2515~2575MHz、2635-2675MHz和4800~4900MHz頻段為新增頻段，2575~2635MHz頻段為中國移動現有的TD-LTE頻段。2019年3月31日前，中國聯通方面將在全國範圍內逐步停止使用2555MHz~2575MHz頻率，中國電信方面將逐步停止使用2635MHz~2655MHz頻率，前述頻率將由工信部收回。 ———百度百科
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