5G Technology

“G” refers to generation and indicates a threshold for a significant shift in capability, architecture, and technology. These designations are made by the telecommunications industry through the standards-setting authority known as 3GPP. 3GPP creates new technical specifications approximately every 10 years, hence the use of the word “generation”. An alternate naming convention uses the acronym IMT (which stands for International Mobile Telecommunications), along with the year the standard became official. As an example, you may see 3G also referred to as IMT 2000.

This video provides a simplified overview of 1G-4G.

To understand 5G, it is important to understand a bit about the electromagnetic radio spectrum. This video gives an overview of how cell phones use spectrum.

5G will bring faster speed and stronger services by using more spectrum. To establish a 5G network, it is necessary to secure spectrum for that purpose in advance. Governments and companies have to negotiate spectrum—usually by auctioning off “bands,” sometimes for huge sums. Spectrum allocation can be a very complicated and political process. Many experts fear that 5G, which requires lots of spectrum, threatens so-called “network diversity”—the idea that spectrum should be used for a variety of purposes across government, business, and society.

For more on spectrum allocation, see the Internet Society’s publication on Innovations in Spectrum Management (2019).

5G hopes to tap into new, unused bands at the top of the radio spectrum, known as millimeter waves (mmwaves). These are much less crowded than the lower bands, allowing faster data transfers. But millimeter waves are tricky: their maximum range is approximately 1.6 km, and trees, walls, rain, and fog can limit the distance the signal travels to only 1km. As a result, 5G will require a higher volume of cell towers, compared to the few massive towers required for 4G. 5G will need towers every 100 meters outside, and every 50 meters inside, which is why 5G is best suited for dense urban centers (as discussed in more detail below). The theoretical potential of millimeter waves is exciting, but in reality, most 5G carriers are trying to deploy 5G in the lower parts of the spectrum.

5G technology runs on fiber infrastructure. Fiber can be understood as the nervous system of a mobile network, connecting data centers to cell towers.

Mobile operators and international standards setting bodies, including the International Telecommunications Union, believe fiber is the best connective material due to its long life, high capacity, high reliability, and ability to support very high traffic. But the initial investment is expensive (a 2017 Deloitte study estimated that 5G deployment in the United States would require at least $130 billion investment in fiber) and often cost prohibitive to suppliers and operators, especially in developing countries and rural areas. 5G is sometimes advertised as a replacement for fiber; however, fiber and 5G are complementary technologies.

The chart below is often used to explain the primary features that make up 5G technology (enhanced capacity, low latency, and enhanced connectivity) and the potential applications of these features.

The market of 5G providers is very concentrated, even more so than for previous generations. A handful of companies are capable of supplying telecommunications operators with the necessary technology. Huawei (China), Ericsson (Sweden), and Nokia (Finland) have led the charge to expand 5G  and typically interface with local telecom companies, sometimes providing end-to-end equipment and maintenance services.

In 2019, the United States government passed a defense authorization spending act, NDAA Section 889, that essentially prohibits U.S. agencies from using telecommunications equipment made by Chinese suppliers (for example, Huawei and ZTE). The restriction was put in place over fears that the Chinese government may use its telecommunications infrastructure for espionage (see more in the Risks section). NDAA Section 889 could apply to any contracts made with the U.S. government, and so it is critical for organizations considering partnerships with Chinese suppliers to keep in mind the legal challenges of trying to engage with both the U.S. and Chinese governments in relation to 5G.

Of course, this means that the choice of 5G manufacturers suddenly becomes much more limited. Chinese companies have by far the largest market share of 5G technology. Huawei has the most patents filed, and the strongest lobbying presence within the International Telecommunications Union.

The 5G playing field is fiercely political, with strong tensions between China and the United States. Because 5G technology is closely connected to chip manufacturing, it is important to keep an eye on “the chip wars”. Suppliers reliant on American and Chinese companies are likely to get caught in the crossfire as the trade war between these countries worsens, because supply chains and manufacturing of equipment is often dependent on both countries. Peter Bloom, founder of Rhizomatica, points out that the global chip market is projected to grow to $22.41 billion by 2026. Bloom cautions: “The push towards 5G encompasses a plethora of interest groups, particularly governments, financing institutions, and telecommunications companies, that demands to be better analyzed in order to understand where things are moving, whose interests are being served, and the possible consequences of these changes.”

Because most people in industrially developing contexts connect to the internet via cell phone infrastructure and mobile broadband, what would be most useful to them would be “5G broadband,” also called 5G Fixed Wireless Access (FWA). FWA is designed to replace “last mile” infrastructure with a wireless 5G network. Indeed, that “last mile”—the final distance to the end user—is often the biggest barrier to internet access across the world. But because the vast majority of these 5G networks will rely on physical fiber connection, FWA without fiber won’t be of the same quality. These FWA networks will also be more expensive for network operators to maintain than traditional infrastructure or “standard fixed broadband.”

This article by one of the top 5G providers, Ericsson, asserts that FWA will be one of the main uses of 5G, but the article shows that the operators will have a wide ability to adjust their rates, and also admits that many markets will still be addressed with 3G and 4G.

While 5G requires enormous investment in physical infrastructure, new generations of cellular Wi-Fi access are becoming more accessible and affordable. There is also an increasing variety of “community network” solutions, including Wi-Fi meshnets and sometimes even community-owned fiber. For further reading see: 5G and the Internet of EveryOne: Motivation, Enablers, and Research Agenda, IEEE (2018). These are important alternatives to 5G that should be considered in any context (developed and developing, urban and rural).

“If we are talking about thirst and lack of water, 5G is mainly a new type of drink cocktail, a new flavor to attract sophisticated consumers, as long as you live in profitable places for the service and you can pay for it. Renewal of communications equipment and devices is a business opportunity for manufacturers mainly, but not just the best ‘water’ to the unconnected, rural, … (non-premium clients), even a problem as investment from operators gets first pushed by the trend towards satisfying high paying urban customers and not to spread connectivity to low pay social/universal inclusion customers.” – IGF Dynamic Coalition on Community Networks, in communication with the author of this resource.

It is critical not to forget about previous generation networks. 2G will continue to be important for providing broad coverage. 2G is already very present (around 95% in low- and middle- income countries), requires less data, and carries voice and SMS traffic well, which means that it is a safe and reliable option for many situations. Also, upgrading existing 2G sites to 3G or 4G is less costly than building new sites.

The technology that 5G facilitates (the Internet of Things , smart cities , smart homes) will encourage the installation of chips and sensors in an increasing number of objects. The devices 5G proposes to connect are not primarily phones and computers, but sensors, vehicles, industrial equipment, implanted medical devices, drones, cameras, etc. Linking these devices raises a number of security and privacy concerns, as explored in the Risks section .

The actors that stand to benefit most from 5G are not citizens or democratic governments, but corporate actors. The business model powering 5G centers around industry access to connected devices: in manufacturing, in the auto industry, in transport and logistics, in power generation and efficiency monitoring, etc. 5G will boost the economic growth of those actors able to benefit from it, particularly those invested in automation, but it would be a leap to assume the distribution of these benefits across society.

The introduction of 5G will bring the private sector massively into public space through the network carriers, operators, and other third parties behind the many connected devices. This overtaking of public space by private actors (usually foreign private actors) should be carefully considered from the lens of democracy and fundamental rights. Though the private sector has already entered our public spaces (streets, parks, shopping malls) with previous cellular networks, 5G’s arrival, bringing with it more connected objects and more frequent cell towers, will increase this presence.

While 5G networks hold the promise of enhanced connectivity, there is growing concern about their misuse for anti-democratic practices. Governments in various regions have been observed using technology to obstruct transparency and suppress dissent, with instances of internet shutdowns during elections and surveillance of political opponents. From 2014 to 2016 for example, internet shutdowns were used in a third of the elections in sub-Saharan Africa.

These practices are often facilitated by collaborations with companies providing advanced surveillance tools, enabling the monitoring of journalists and activists without due process. The substantial increase in data transmission that 5G offers raises the stakes, potentially allowing for more pervasive surveillance and more significant threats to the privacy and rights of individuals, particularly those marginalized. Furthermore, as electoral systems become more technologically reliant, with initiatives to move voting online, the risk of cyberattacks exploiting 5G vulnerabilities could compromise the integrity of democratic elections, making the protection against such intrusions a critical priority.

5G has many potential uses in entertainment, especially in gaming. Low latency will allow massively multiplayer games, higher quality video conferencing, faster downloading of high-quality videos, etc. Augmented and virtual reality are advertised as ways to create immersive experiences in online learning. 5G’s ability to connect devices will allow for wearable medical devices that can be controlled remotely (though not without cybersecurity risks). Probably the most exciting example of “tactile internet” is the possibility of remote surgery: an operation could be performed by a robot  that is remotely controlled by a surgeon somewhere across the world. The systems necessary for this are very much in their infancy and will also depend on the development of other technology, as well as regulatory and legal standards and a viable business model.

The major benefit of 5G will come in the automobile sector. It is hoped that the high speed of 5G will allow cars to coordinate safely with one another and with other infrastructure. For self-driving vehicles to be safe, they will need to be able to communicate with one another and with everything around them within milliseconds. The super speed of 5G is important for achieving this. (At the same time, 5G raises other security concerns for autonomous vehicles.)

Machine-to-machine connectivity, or M2M, already exists in many devices and services , but 5G would further facilitate this. This stands to benefit industrial players (manufacturers, logistics suppliers, etc.) most of all, but could arguably benefit individuals or cities  who want to track their use of certain resources like energy or water. Installed sensors can be used to collect data  which in turn can be analyzed for efficiency and the system can then be optimized. Typical M2M applications in the smart home include thermostats and smoke detectors, consumer electronics, and healthcare monitoring. It should be noted that many such devices can operate on 4G, 3G, and even 2G networks.

Probably the most relevant benefit of 5G to industrially developing contexts will be the potential of FWA. FWA is less often cited in the marketing literature, because it does not allow the industrial benefits promised in full. Because it allows breadth of connectivity rather than revolutionary strength or intensity, it should be thought of as a different kind of “5G”. (See the 5G Broadband / Fixed Wireless Access  section.) As explained, FWA will still require infrastructure investments, and will not necessarily be more affordable than broadband alternatives due to the increasing power given to the carriers.

With 5G connecting more and more devices, the private sector will be moving further into public space through sensors, cameras, chips, etc. Many connected devices will be things we never expected to be connected to the internet before: washing machines, toilets, cribs, etc. Some will even be inside our bodies, like smart pacemakers. The placement of devices with chips into our homes and environments facilitates the collection of  data about us, as well as other forms of surveillance.

A growing number of third-party actors have sophisticated methods for collecting and analyzing personal data. Some devices may only ultimately collect meta-data, but this can still seriously reduce privacy. Meta-data is information connected to our communications that does not include the content of those communications: for example, numbers called, websites visited, geographical location, or the time and date a call was made. The EU’s highest court has ruled that this kind of information can be considered just as sensitive as the actual contents of communications because of insights that the data can offer into our private lives. 5G will allow telecommunications operators and other actors access to meta-data that can be assembled for insights about us that reduce our privacy.

Last, 5G requires many small cell base stations, so the presence of these towers will be much closer to people’s homes and workplaces, on street lights, lamp posts, etc. This will make location tracking much more precise and make location privacy nearly impossible.

For most, 5G will be supplied by foreign companies. In the case of Huawei and ZTE, the government of the country these companies operate in (the People’s Republic of China) do not uphold human rights obligations or democratic values. For this reason, some governments are concerned about the potential of abuse of data for foreign espionage. Several countries, including the United States, Australia, and the United Kingdom, have taken actions to limit the use of Chinese equipment in their 5G networks due to fears of potential spying. A 2019 report on the security risks of 5G by the European Commission and European Agency for Cybersecurity warns against using a single supplier to provide 5G infrastructure because of espionage risks. The general argument against a single supplier (usually made against the Chinese supplier Huawei), is that if the supplier provides the core network infrastructure for 5G, the supplier’s government (China) will gain immense surveillance capacity through meta-data or even through a “backdoor” vulnerability. Government spying through the private sector and telecom equipment is commonplace, and China is not the only culprit. But the massive network capacity of 5G and the many connected devices collecting personal information will enhance the information at stake and the risk.

As a general rule, the more digitally connected we are, the more vulnerable we become to cyber threats. 5G aims to make us and our devices ultra-connected. If a self-driving car on a smart grid is hacked or breaks down, this could bring immediate physical danger, not just information leakages. 5G centralizes infrastructure around a core, which makes it especially vulnerable. Because of the wide application of 5G based networks, 5G brings the increased possibility of internet shutdowns, endangering large parts of the network.

5G infrastructure can simply have technical deficiencies. Because 5G technology is still in pilot phases, many of these deficiencies are not yet known. 5G advertises some enhanced security functions, but security holes remain because devices will still be connected to older networks.

As A4AI explains, “The rollout of 5G technology will demand significant investment in infrastructure, including in new towers capable of providing more capacity, and bigger data centres running on efficient energy.” These costs will likely be passed on to consumers, who will have to purchase compatible devices and sufficient data. 5G requires massive infrastructure investment—even in places with strong 4G infrastructure, existing fiber-optic cables, good last-mile connections, and reliable electricity. Estimates for the total cost of 5G deployment—including investment in technology and spectrum—are as high as $2.7 trillion USD. Due to the many security risks, regulatory uncertainties, and generally untested nature of the technology, 5G is not necessarily a safe investment even in wealthy urban centers. The high cost of introducing 5G will be an obstacle for expansion and prices are unlikely to fall enough to make 5G widely affordable.

Because this is such a complex new product, there is a risk of purchasing low-quality equipment. 5G is heavily reliant on software and services from third-party suppliers, which multiplies the chance of defects in parts of the equipment (poorly written code, poor engineering, etc.). The process of patching these flaws can be long, complicated, and costly. Some vulnerabilities may go unidentified for a long time but can suddenly cause severe security problems. Lack of compliance to industry or legal standards could cause similar problems. In some cases, new equipment may not be flawed or faulty, but it may simply be incompatible with existing equipment or with other purchases from other suppliers. Moreover, there will be large costs just to run the 5G network properly: securing it from cyberattacks, patching holes and addressing flaws, and keeping up the material infrastructure. Skilled and trusted human operators are needed for these tasks.

Installing new infrastructure means dependency on private sector actors, usually from foreign countries. Over-reliance on foreign private actors raises multiple concerns, as mentioned, related to cybersecurity, privacy, espionage, excessive cost, compatibility, etc. Because there are only a handful of actors that are fully capable of supplying 5G, there is also the risk of becoming dependent on a foreign country. With current geopolitical tensions between the U.S. and China, countries trying to install 5G technology may get caught in the crossfire of a trade war. As Jan-Peter Kleinhans, a security and 5G expert at Stiftung Neue Verantwortung (SNV), explains “The case of Huawei and 5G is part of a broader development in information and communications technology (ICT). We are moving away from a unipolar world with the U.S. as the technology leader, to a bipolar world in which China plays an increasingly dominant role in ICT development.” The financial burdens of this bipolar world will be passed onto suppliers and customers.

“Without a comprehensive plan for fiber infrastructure, 5G will not revolutionize Internet access or speeds for rural customers. So anytime the industry is asserting that 5G will revolutionize rural broadband access, they are more than just hyping it, they are just plainly misleading people.” — Ernesto Falcon, the Electronic Frontier Foundation.

5G is not a lucrative investment for carriers in more rural areas and developing contexts, where the density of potentially connected devices is lower. There is industry consensus, supported by the ITU itself, that the initial deployment of 5G will be in dense urban areas, particularly wealthy areas with industry presence. Rural and poorer areas with less existing infrastructure are likely to be left behind because it is not a good commercial investment for the private sector. For rural and even suburban areas, millimeter waves and cellular networks that require dense cell towers will likely not be a viable solution. As a result, 5G will not bridge the digital divide for lower income and urban areas. It will reinforce it by giving super-connectivity to those who already have access and can afford even more expensive devices, while making the cost of connectivity high for others.

Huawei has shared that the typical 5G site has power requirements over 11.5 kilowatts, almost 70% more than sites deploying 2G, 3G, and 4G. Some estimate 5G technology will use two to three times more energy than previous mobile technologies. 5G will require more infrastructure, which means more power supply and more battery capacity, all of which will have environmental consequences. The most significant environmental issues associated with implementation will come from manufacturing the many component parts, along with the proliferation of new devices that will use the 5G network. 5G will encourage more demand and consumption of digital devices, and therefore the creation of more e-waste, which will also have serious environmental consequences. According to Peter Bloom, founder of Rhizomatica, most environmental damages from 5G will take place in the global south. This will include damage to the environment and to communities where the mining of materials and minerals takes place, as well as pollution from electronic waste. In the United States, the National Oceanic and Atmospheric Administration and NASA reported last year that the decision to open up high spectrum bands (24 gigahertz spectrum) would affect weather forecasting capabilities for decades.

5G: The Driver for the Next-Generation Digital Society in Latin America and the Caribbean

“Many countries around the world are in a hurry to adopt 5G to quickly secure the significant economic and social benefits that it brings. Given the enormous opportunities that 5G networks will create, Latin American and Caribbean (LAC) countries must actively adopt 5G. However, to successfully deploy 5G networks in the region, it is important to resolve the challenges that they will face, including high implementation costs, securing spectrum, the need to develop institutions, and issues around activation. For 5G networks to be successfully established and utilized, LAC governments must take a number of actions, including regulatory improvement, establishing institutions, and providing financial support related to investment in the 5G network.”

The United Kingdom was among the first markets to launch 5G globally in 2019. As UK operators have ramped up 5G investment, the market has been on par with other European countries in terms of performance, but still lags behind “5G pioneers” like South Korea and China. In 2020, the British government banned operators from using 5G equipment supplied by Chinese telecommunications company Huawei due to security concerns, setting a deadline of 2023 for the removal of Huawei’s equipment and services from core network functions and 2027 for complete removal. The Digital Connectivity Forum warned in 2022 that the UK was at risk of not fully tapping into the potential of 5G due to insufficient investment, which could hurt the development of new technology services like autonomous vehicles, automated logistics, and telemedicine.

The Gulf states were among the first in the world to launch commercial 5G services, and have invested heavily into 5G and advanced technologies. Local Arab service providers are partnering with ZTE and Nokia to expand their reach in Arab and Asian countries. In many Gulf countries, 5G and Internet service providers are predominantly government-owned, thus consolidating government influence over 5G-backed services or platforms. This could make requests for sharing data or Internet shutdowns easier for governments. Dubai is already deploying facial recognition technology developed by companies with ties to the CCP for its “Police Without Policemen” program. (Ahmed, R. et al., 13)

South Korea established itself as an early market leader for 5G development. Their networks within Asia will be instrumental in the diffusion of 5G development within the region. Currently, South Korea’s Samsung is primarily present in the 5G devices market. Samsung is under consideration as a replacement for Huawei in discussions by the “D10 Club,” a telecoms supplier group that was established by the UK and consisting of G7 members plus India, Australia, and South Korea. However, details of the D10 Club agenda have yet to be established. While South Korea and others attempt to expand their role in 5G, ICT decoupling from Huawei and security-trade tradeoffs are proving to make the process complicated. (Ahmed, R. et al., 14)

Which countries have rolled out 5G in Africa?

“Governments in Africa are optimistic that they will one day use 5G to do large-scale farming using drones, introduce autonomous cars into roads, plug into the metaverse, activate smart homes and improve cyber security. Some analysts predict that 5G will add an additional $2.2 trillion to Africa’s economy by 2034. But Africa’s 5G first movers are facing teething problems that stand to delay their 5G goals. The challenges have revolved around spectrum regulation clarity, commercial viability, deployment deadlines, and low citizen purchasing power of 5G enabled smartphones, and expensive internet.” As of mid-2022, Botswana, Egypt, Ethiopia, Gabon, Kenya, Lesotho, Madagascar, Mauritius, Nigeria, Senegal, Seychelles, South Africa, Uganda, and Zimbabwe were testing or had deployed 5G, though many of these countries faced delays in their rollout.