WASHINGTON, December 2, 2022 — Low earth orbit satellites have the potential to provide life-changing connectivity for rural and underserved users if they can overcome issues of affordability and sustainability, according to Dan York, director of online content for the Internet Society.
Speaking at a Friday event hosted by the Gigabit Libraries Network, York explained that LEO technology can help to not only connect the two billion people worldwide who are unserved but also improve connectivity for the underserved.
Traditional geostationary satellites can provide some connectivity, but the high latency prevents uses like video calling or online gaming. LEOs offer a low-latency, high-speed connection that supports real-time communication.
In addition to being an interim solution while fiber buildout takes place, LEOs can provide redundancy during disasters and other outages, said Don Means, director of the Gigabit Libraries Network.
York agreed, noting that LEO satellites played an important role in providing connectivity during the aftermath of Hurricane Ian or during wildfires in California.
“Starlink makes it super easy because they can bring one of their trailers into a location, put up a Starlink antenna on the top, bring that connectivity down and then they can share it locally with Wi-Fi access points or cellular access points so people can be able to get that kind of connectivity — first responders, but also people in that local community.”
LEO satellites can provide connectivity even for certain locations that lack a ground station by using inter-satellite lasers, York added.
There are three primary LEO system components. Satellite constellations are made up of hundreds or thousands of satellites, launched into orbit and arranged into “shells” at various altitudes.
User terminals facilitate the transmission and receipt of data to and from the satellites. The antennas are “electronically steerable,” meaning that they can track multiple satellites without physically moving.
The final LEO system component is ground stations, also known as gateways, which are the large antennas and facilities that connect the satellites to the internet.
Advances in rocket technology are driving an increase in LEO satellites, York said. For example, SpaceX is reusing rockets, making launches less expensive. The relatively smaller size of LEO satellites means that they can be mass produced using assembly lines.
However, affordability is still a barrier to widespread adoption, York said. Another challenge is competition with mobile telecom companies for spectrum allocation. ISOC recently released a study discussing these issues and making recommendations for their resolution.
There is also still some uncertainty about the capacity of these connections, York said, pointing to anecdotal reports as well as an Ookla study showing that Starlink’s capacity had decreased in certain areas.
“How much of that is growing pains while Starlink continues to build out the rest of its constellation, versus how much of it might be inherent limitations within the systems?” he asked. “We don’t know. I think we probably won’t know until more of these systems get up and are launched.”
Despite these questions, York was optimistic about the promise of LEO technology: “I think there’s great potential that these systems, as they come online, can truly offer us ways to connect the unconnected.”