5G: Most experts say 5G will feature network speeds at 20 Gb/s or higher and have a latency that is mere milliseconds. Not only will people be connected to each other, but also to machines, automobiles, city infrastructure, public safety, and more.
5G New Radio: 5G NR has been adopted as the working name for a new wireless radio standard for 5G and comes in two avors: non-standalone NR (NSA NR), which implies using LTE as the control plane anchor; and standalone NR, which implies full control plane capability for 5G NR (see 5G timeline, below).
As explained by Ericsson in an April 2016 white paper, “5G Radio Access,” 5G networks will not be based on one speci c radio-access technology (RAT). “Rather, 5G is a portfolio of access and connectivity solutions addressing the demands and requirements of mobile communication beyond 2020,” 5G radio access will be built upon both new RATs and current, evolved wireless technologies (LTE, HSPA, GSM, and WiFi).
New waveform: Orthogonal frequency-division multiplexing (OFDM) is the access scheme that is used in today’s LTE/LTE-Advanced networks. As described in a paper by Rohde & Schwarz, limitations in OFDM, such as high sensitivity to frequency and clock o sets, have led to other waveforms also being considered as candidates for 5G. These include: generalized frequency-division multiplexing (GFDM); lter bank multicarrier (FBMC); universal ltered multicarrier (UFMC); and ltered OFDM (f-OFDM).
At the same time, new multiple access schemes are also being researched, including sparse code multiple access (SCMA), non-orthogonal multiple access (NOMA), and resource spread multiple access (RSMA).
Spectrum: The GSMA is one of the most active lobbyists for spectrum on behalf of the mobile industry. It has de ned three key frequency ranges to deliver widespread coverage and support all use cases for 5G: sub-1 GHz, 1-6 GHz, and above 6 GHz (including millimeter wave spectrum between 30 and 300 GHz). The World Radiocommunication Conference in 2019 (WRC-19) will consider the following bands for 5G under agenda item 1.13: 24.25-27.5 GHz, 31.8-33.4 GHz, 37-43.5 GHz, 45.5-50.2 GHz, 50.4-52.6 GHz, 66-76 GHz, and 81-86 GHz.