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5G移动通信发展趋势与若干关键技术
关注微信公众号From Wikipedia, the free encyclopedia
5th generation wireless systems, abbreviated 5G, are improved wireless network technologies deploying in 2018 and later. The primary technologies include:
bands (26, 28, 38, and 60 GHz) offer performance as high as 20 gigabits per second; Massive
(Multiple Input Multiple Output - 64-256 antennas) offers performance "up to ten times current 4G" "Low-band 5G" and "Mid-band 5G" use frequencies from 600 MHz to 6 GHz, especially 3.5-4.2 GHz.
Release 15 of December, 2017 is the most common definition of 5G. Some prefer the more rigorous
IMT-2020 definition, which only includes the high-frequency bands for much higher speeds.
The millimeter wave systems are designed for 20 gigabit peak downloads. Their estimated median bandwidth is 3.5 gigabits.
The estimated median bandwidth for the band of 3.5 GHz-4.2 GHz with additional MIMO antennas is 490 megabits. In mid-band frequencies, the modeled 5G speed is very similar to the 4G LTE speed, assuming the same bandwidth and antenna configuration.
Most large mobile networks are testing all three approaches. Verizon and AT&T announced millimeter wave commercial deployments for 2018. Softbank deployed Massive MIMO beginning in 2016. In 2018 T-Mobile announced low band 5G for 30 cities. China Telecom's initial 5G buildout will be mid-band.
As of 2017, development of 5G is being led by several companies, including , , , , , ,
and others. Although 5G is planned to be commercially available worldwide by 2020,
demonstrated 5G at the
for the visitors.
In April 2008,
partnered with Geoff Brown and
to develop 5G communication technology.
In 2008, the South Korean IbjngT R&D program of "5G mobile communication systems based on beam-division multiple access and relays with group cooperation" was formed.
In August 2012, New York University founded NYU WIRELESS, a multi-disciplinary academic research centre that has worked in 5G wireless communications.
On 8 October 2012, the UK's
secured 35M for a new 5G research centre, jointly funded by the British government's UK Research Partnership Investment Fund (UKRPIF) and a consortium of key international mobile operators and infrastructure providers, including , ,
Laboratories Europe, , and . It will offer testing facilities to mobile operators keen to develop a mobile standard that uses less energy and less radio spectrum while delivering speeds faster than current 4G with aspirations for the new technology to be ready within a decade.
On 1 November 2012, the EU project "Mobile and wireless communications Enablers for the Twenty-twenty Information Society" (METIS) started its activity towards the definition of 5G. METIS achieved an early global consensus on these systems. In this sense, METIS played an important role of building consensus among other external major stakeholders prior to global standardization activities. This was done by initiating and addressing work in relevant global fora (e.g. ITU-R), as well as in national and regional regulatory bodies.
Also in November 2012, the iJOIN EU project was launched, focusing on "" technology, which is of key importance for taking advantage of limited and strategic resources, such as the
. According to , the European Commissioner for Digital Economy and Society (2014–19), "an innovative utilization of spectrum" is one of the key factors at the heart of 5G success. Oettinger further described it as "the essential resource for the wireless connectivity of which 5G will be the main driver". iJOIN was selected by the
as one of the pioneering 5G research projects to showcase early results on this technology at the
2015 (Barcelona, Spain).
In February 2013, ITU-R Working Party 5D (WP 5D) started two study items: (1) Study on IMT Vision for 2020 and beyond, (2) Study on future technology trends for terrestrial IMT systems. Both aiming at having a better understanding of future technical aspects of mobile communications towards the definition of the next generation mobile.
On 12 May 2013,
stated that they have developed a "5G" system. The core technology has a maximum speed of tens of Gbit/s (gigabits per second). In testing, the transfer speeds for the "5G" network sent data at 1.056 Gbit/s to a distance of up to 2 kilometres.with the use of an 8*8 MIMO.
On 6 November 2013,
announced plans to invest a minimum of $600 million into R&D for next generation 5G networks capable of speeds 100 times faster than modern LTE networks.
In September 2014 "Millimeter Wave Wireless Communications" authored by researcher: Theodore Rappaport (NYU), Robert Heath (UTAustin), Robert Daniels (UTAustin), and James Murdock (UTAustin).
On 7 July 2016 European Commissioner for Digital Economy and Society,
received the 5G Manifesto for timely deployment of 5G in Europe which sets out industry recommendations on how the EU can support and foster 5G innovation and deployment, and timelines for 5G demonstrations and commercial deployment, signed by representatives of , , ,
Europe, , , , , , , , , , , ,
On 14 July 2016, the Federal Communications Commission (FCC) unanimously passed a proposal to free up vast amounts of new bandwidth in the underutilised high-band spectrum for the next generation of wireless communications (5G). The Spectrum Frontiers Proposal (SFP) will double the amount of millimeter-wave (mmWave) unlicensed spectrum to 14 GHz and create four times the amount of flexible, mobile-use spectrum the FCC has licensed to date.
On 17 October 2016, Qualcomm announced the first 5G modem, the Snapdragon X50, as the first commercial 5G mobile chipset.
On 18 July 2017, the 28 telecom ministers of the EU and Norway signed a declaration of intent in , Estonia, seeking "…to establish a common baseline on future 5G standards and confirm the willingness of member states to position Europe as the lead market for 5G."
On 19 January 2018, Nokia and
started 5G test site in .
On 9 February 2018,
deployed 5G at the .
On 2 March 2018,
lawmakers struck a deal on opening up the 3.6 and 26 GHz bands by 2020 to make room for the new network.
Scientists have raised concerns about the potential risks of increased exposure to . Previous generations of wireless technology relied on large cell towers that were usually located at a distance from residences. The "small cell" 5G technology requires the deployment thousands of small base stations. While the exact number of stations required remains unclear, one researcher estimated one station per 12 homes.
236 scientists have signed a petition warning of the health risks of "massively increasing" the public's exposure to
On 5 April 2018, the UK telecoms regulator, , announced the results of a
of the 2.3 GHz band (for improved
capacity) and the 3.4 GHz band for future 5G mobile services.
. International Telecommunications Union.
. IEEE Spectrum: Technology, Engineering, and Science News.
. 5g.co.uk.
. 5g.ieee.org.
. www.itu.int.
Flynn, Kevin. . www.3gpp.org.
. www.itu.int.
Nelson, Patrick. . Network World.
Dave. . wirelessone.news.
Dave. . wirelessone.news.
. Qualcomm.
. The Verge.
. about.att.com.
. markets.ft.com.
. Light Reading.
. Netscribes. 9 November 2017.
Seong-Mok Oh (February 12, 2018). . ITU News 2018.
Kang, Seung-woo (20 February 2018). .
The Korean IT R&D program of /IITA: 2008-F-004-01 "5G mobile communication systems based on beam-division multiple access and relays with group cooperation".
. Nyu Wireless. .
. Fiercewireless.com. . Archived from
Alleven, Monica (). . Fiercewireless.com.
. University of Surrey. 8 October .
Philipson, Alice (9 October 2012). . . London:
(PDF). November 2012.
. March 2015.
. April 2017.
. 12 May .
Embley, Jochan (6 November 2013). . The Independent. London 2013.
. www.pearsonhighered.com.
European Commission July 7, 2016. Accessed February 28, 2017
. NYU WIRELESS. .
. Qualcomm. .
. Estonian Presidency of the Council of the European Union. 18 July .
. 19 January 2018.
Foo Yun Chee (3 March 2018). .
Puzzanghera, Jim. . latimes.com.
Hertsgaard, M Dowie, Mark (). . The Nation.  .
. Google Docs.
. Ofcom 2018.
Major players of 5G
; Heath Jr, R Daniels, R Murdock, James (28 September 2014). Millimeter Wave Wireless Communications (1 ed.). Prentice Hall. p. 704.  . A technical overview of potential 5G technologies, including standards for major global 60 GHz wireless local-area networks (WLAN) and personal local-area networks (WPAN).
Osseiran, A Monserrat, Jose F., Marsch, Patrick (2 June 2016). 5G Mobile and Wireless Communications Technology (1 ed.). Cambridge University Press. p 410.  . Written by leading experts in 5G research, this book is a comprehensive overview of the current state of 5G.
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