Havana can have 5G before Miami

(Click here for a Spanish translation of this post).

Havana needs 5G more than Miami does.

Compared to Miami, Havana is an Internet desert, but Havana may have 5G wireless connectivity before Miami. 5G architecture, US politics and policy, and the 5G timetable favor Havana. Let's start with 5G architecture.

Architecutre

Small cells (source)

5G will require many "small cells" because it uses high-frequency radio signals that don't travel as far as 4G signals and are more easily blocked by obstructions like trees and buildings. For example, there are about 154,000 cell towers in the US today and the CTIA, an industry association, estimates that there will be 800,000 small cells by 2026.

In Miami, small cell radios will be installed by professional employees of and contractors to the large mobile phone companies. Havana has only one telecommunication company, ETECSA, but it is home to SNET, the world's largest community network that is not connected to the Internet. Today, SNET is illegal but tolerated, and if ETECSA were willing to legitimize and collaborate with SNET, SNET members could play a role in siting and installing small cells. SNET's legal status is currently being reconsidered and by the time Havana is ready to deploy 5G, SNET could play a major cost and time-saving role. (Note that Cuba's new constitution de-centralizes executive governance by reducing provincial government and strengthening municipal government, possibly increasing the likelihood of local control of Internet infrastructure).

Havana's population is about 4.5 times that of Miami, but the population density is about one-tenth of Miami's. Low population density lends itself to citizen installation -- antennas will be relatively easy to site and install. Furthermore, obtaining permission to install them in Havana will be easier than Miami. Wire-line Internet service providers have already installed broadband infrastructure throughout Miami and, since 5G will offer a fixed-broadband alternative, the incumbents will resist it politically. On the other hand, 5G will fill a near-vacuum in Havana -- Havana needs 5G more than Miami does.

Time

Average 4G download speed, Mbps (source)

Wireless standards are complex and evolve over time. The Third Generation Partnership Project was established in 1998 to define 3G mobile standards and is now defining 5G standards. Thousands of people from equipment manufacturers, telecommunication companies, national and international standards organizations, and professional societies are involved in the process and the technology and standards evolve over time. (For example, between February of 2016 and January 2019, average 4G download speed doubled in the US).

While we will see an ad proclaiming that Miami "has 5G" this year or next, the capability and applications will be marginally improved over 4G and only available in limited parts of the city. Perhaps five years from now 5G standards and equipment that can support novel applications will become available.

In the interim, neither city will see much 5G impact, but it will give Havana time to continue with their current program of stopgap measures like 3G mobile access. If the price of 3G is significantly reduced, Cuba will develop trained, demanding Internet users and app developers who are ready to embrace 5G once it is available.

Stopgap measures like 3G, public WiFi, and home DSL will not close the fiber gap between Miami and Havana, but in five years improved terrestrial wireless and low and medium-earth orbit (LEO and MEO) satellite connectivity will be available for 5G backhaul. Cuba is already a customer of MEO Internet-service provider O3b and in five years O3b will have significantly improved capacity and performance. Additionally, LEO providers SpaceX, OneWeb and China's Hongyun Project all plan to be offering service over Cuba in five years. SpaceX is based in the US and OneWeb in Great Britain, so Hongyun may have the inside track here, although they will have less capacity than their competitors.

Politics and policy

source

Trump's trade war with China favors Havana over Miami. As FCC Commissioner Jessica Rosenworcel points out: "levying new tariffs on everything from semiconductors to modems to routers is not going to make it any easier to deploy 5G wireless service. In fact, it will make it much more expensive."

His ban against Huawei further advantages Havana since Huawei is the world's leading producer of telecommunication equipment for service providers with a comfortable lead over their 5G competitors Nokia and Ericsson. They are also the number 2, in unit sales, and number 3, in revenue, smartphone manufacturer. If the ban persists, Miami will not have access to Huawei equipment.

By contrast, Huawei has supplied nearly all of Cuba's Internet infrastructure from its backbone to WiFi hotspots and home DSL and they are almost certain to be Cuba's 5G vendor. It is likely that China will contribute financially if they see Cuba as a strategic ally in their effort to extend the Digital Silk Road to Latin America and the Caribbean.

The US government was instrumental in funding the development of the Internet and could adopt positive 5G policies like investing in R&D or providing incentives to participate in the global 5G standards process, but Trump eschews global cooperation and Chinese companies are playing a leading role in the definition of 5G standards, which will solidify Huawei's leadership. Chinese telephone companies with 1.58 billion mobile phone subscriptions, will also influence standards as large 5G equipment customers.

Rather than seeing 5G as a cooperative global effort, Trump sees it as a competitive race and his 5G policy focuses on spectrum allocation (which is going poorly) and a call for State and local governments to improve "access to land, infrastructure, and property that will support new wireless networks, including rural America." [sic] That call sounds like it was drafted by a lobbyist for the incumbent mobile telcos or perhaps an ex-Associate General Counsel at Verizon like FCC Chairman Ajit Pai and it will meet resistance. (China has no such conflict).

I used the word "can" instead of "will" in the title of this post because the outcome depends upon the will of the Cuban government and ETECSA.

A 5G, community network strategy for Cuba (and other developing nations)

In a previous post, I suggested that Cuba might be able to leap over 4G to 5G wireless infrastructure using satellite and terrestrial networks for backhaul. While that would require political and policy change, it would be a good fit with Cuban culture and skills.

Before talking about Cuba, let me say a bit about wireless generations.

Each mobile technology generation used new technology and enabled new applications:

• 1G: Voice calls
• 2G: Digital data for text and sending small images
• 3G: Smartphones for low-quality video, Web browsing, and GPS
• 4G: High speed, lower latency communication for video streaming and chat and interaction with complex Web content

Fifth-generation wireless will be faster than today's 4G and latency is expected be on the order of 1 ms within the 5G network. Radios will be capable of beamforming -- rapidly switching focused beams among large numbers of devices -- and simultaneous two-way (full duplex) transmission at a given frequency. This will enable real-time applications like control of autonomous vehicles, remote medical procedures and augmented and virtual reality as well as fast file transfer and streaming and other, un-imagined applications.

Do not think of this as the evolution of the cell-phone network; think of it as a discontinuity in wireless communication to mobile and fixed users.

In addition to enabling new applications, each mobile computing generation uses different frequency bands and 5G is being designed to use very high frequencies. High-frequency radio waves enable high-speed transmission and small antennas. Being able to fit multiple small, cooperating antennas in a phone or other device (multiple inputs and outputs (MIMO) increases transmission range and speed. However, there is a high-frequency tradeoff -- low-frequency waves travel farther and are better able to penetrate obstacles like buildings and trees than high-frequency waves.

Small cell on the terrace
of a building in Bangalore

High-frequency networks will require a multi-tier architecture. With the current cellular network, phones and other devices communicate with a relatively distant base station that is connected by fiber or high-speed wireless to the Internet. Fifth-generation wireless will require many "small cell" radios that communicate with those high-capacity base stations.

Now back to Cuba (and other developing nations).

As of last year, there were 879 cellular base stations in Cuba, 358 of which had been upgraded to support 3G communication. As of 2016, 85.3% of the population was covered by 2G cellular and 47% of the population had 3G coverage. (Note that 2G coverage has barely increased since 2010 and it has been flat since 2012). If they continue rolling out 3G, it should reach the 85.3% fairly soon, but new base stations will have to be added to cover the entire population.

Upgrading from 2G to 3G requires new equipment and also more backhaul capacity between a base station and the Internet because 3G transmission speeds are greater than 2G and 3G applications use more data. For most Cubans, it would also require the purchase of a new phone. High-speed, 5G service would require much more backhaul capacity and new phones.

In densely populated areas it will be economically feasible to provide that backhaul using fiber, but fiber to support 5G capacity throughout the island would be very expensive. In many locations, satellite connectivity may turn out to be a better backhaul medium than fiber. SES Networks (O3b) will be offering connectivity using their middle-Earth orbit satellites before Cuba is ready for 5G and by the time they are ready, low-Earth orbit satellite connectivity from vendors like OneWeb and SpaceX Starlink will be available.

But what about the large number of small-cell radios that be feeding 5G base stations?

Like today's WiFi radios, they will be installed and maintained by community members and users. Cubans are known for do-it-yourslef innovation, for example in keeping old cars running and installing motors on bicycles and they have built community networks in places like Gaspar, Camagüey and Pinar del Río. Havana's SNET, is said to be the largest community network in the world that is not connected to the global Internet and there are over 8.000 amateur radio operators and over 1,400 active, self-employed programmers in Cuba.

Small cell radios will be semi-automatically configured and simpler to install and maintain than the WiFi radios used in today's street nets, but that is the easy part. Decentralized technology calls for decentralized decision making. Local people who are locally elected should decide questions like how many small cells to deploy in a neighborhood or rural area, where they should be located and how to pay for them. Would the current municipal electoral districts (from 200-3,000 inhabitants) be an appropriate locus of network control?

ETECSA would cede local control but be responsible for acquiring international bandwidth and providing backhaul over fiber or satellite from their base stations. They would also serve as consultants to local communities and could negotiate high-volume discount purchases of locally-owned equipment.

Note that I am still assuming a major role for ETECSA in spite of the fact that historically, nations like Cuba have privatized telecommunication and licensed foreign operators in exchange for investment in infrastructure. In previous posts I have suggested that vested interest and bureaucracy at ETECSA and uncertainty over control may be stifling Cuban Internet expansion. To the extent that that is the case, the new administration would have to change the organizational culture to focus on Cuba's stated economic and social policy goals -- leapfrogging current regulation and policy along with the technology. That may be wishful thinking, but if they are able to do so, they will have an advantage over nations in which private company profit trumps (no pun intended) social goals.

The technology is also ill-defined and unproven. While the standard for the first version of the 5G radio interface between a device and base station is complete, other hardware and software standards are still being developed and 5G is based on technologies that have been tested in trials, but not in large scale practice. The first deployments are not expected until next year, user and network equipment prices are not set and competing technologies like Starry may impact pricing and deployment.

Novel, unproven 5G wireless technologies (source)

In spite of this policy and technology uncertainty, ETECSA can start the ball rolling today by cooperating with and providing Internet gateways to SNET and other street nets, possibly in conjunction with support of the Internet Society and the Organization of American States. They can also learn from the experience of others like Gufinet in Spain and a variety of community networks in the US and elsewhere. At the same time, they should be following the 5G standards process directly and through their vendors, primarily Huawei and SES Networks (O3b), in order to plan for the future.