Large portions of the Philippine population reside in geographically isolated and disadvantaged areas (GIDAs) where mobile and fixed internet services remain scarce. Satellite-based connectivity has long been the fallback option, traditionally delivered via large geostationary (GEO) spacecraft. In recent years, low Earth orbit (LEO) mega-constellations have emerged as a promising alternative, offering reduced latency and potentially transformative reach.
LEO systems operate below 1,200 km altitude, compared to ~36,000 km for GEO satellites. This proximity reduces round-trip signal travel time to around 50 milliseconds, far lower than the ~500 ms typical of GEO links. Such latency improvements enable smoother real-time applications like video conferencing and online gaming. However, unlike GEO satellites that remain fixed relative to the Earth, LEO spacecraft move continuously, requiring hundreds or thousands of satellites to maintain global coverage.
SpaceX’s Starlink is the most visible of these initiatives. As of early 2021, more than 1,000 Starlink satellites were in orbit, each weighing about 260 kg and operating in Ku/Ka-band frequencies. The approved first-generation constellation will comprise 4,409 satellites at 540–570 km altitude, supplemented by a planned 7,518 Very LEO units at 335–346 km using V-band. SpaceX has petitioned for a second-generation network of 30,000 satellites. Beta tests in North America have reported downlink speeds exceeding 100 Mbps, uplinks of 42 Mbps, and latencies under 50 ms. “Brief periods of no connectivity at all” were acknowledged by Starlink during its “Better Than Nothing” beta phase.
Starlink’s user terminals employ phased array antennas capable of electronic beam steering without mechanical movement, priced at $499 plus a $99 monthly subscription during trials. At ~550 km altitude, satellites naturally de-orbit within five years, addressing some space debris concerns. Each pass over a ground location lasts only minutes, necessitating overlapping coverage and seamless handoffs between satellites.
Researchers simulated Starlink’s “availability” over Quezon City (QC) and Marawi City (MC) in the Philippines, and Toronto, Canada (TC) for comparison. Using updated two-line element (TLE) data from Celestrak and a minimum elevation threshold of 40°, they calculated the Total Period with Zero Satellites (TPZS) and Peak Duration with Zero Satellites (PDZS) over 24 hours.
Between December 2020 (890 satellites) and February 2021 (1,017 satellites), TPZS decreased by 54% in QC and 18.8% in MC, with Toronto seeing an 80% reduction. For February 2021, TPZS stood at ~2.9 hours in QC and MC, versus just ~5.97 minutes in Toronto. Availability percentages reached 87.9% in QC, 87.6% in MC, and 99.5% in TC. PDZS dropped to ~2.9 minutes in QC and MC, compared to 1.47 minutes in TC. The number of zero-satellite instances was markedly higher in the Philippine locations, distributed throughout the day.
These figures underscore that visible satellites are only part of the connectivity equation. Starlink’s bent-pipe architecture requires a gateway (GW) within the satellite’s footprint to link to terrestrial internet infrastructure. At present, GWs are concentrated in trial regions such as North America, with expansion to Asia-Pacific anticipated. Network performance also depends on radio link quality, susceptibility to atmospheric attenuation, and physical obstructions, all of which can degrade throughput and increase latency.
The constellation’s growth toward its 12,000-satellite target will improve coverage in regions like QC and MC, potentially matching levels seen in Toronto. Regulatory requirements in the Philippines, including 60% Filipino ownership and a Congressional franchise for telecommunications infrastructure, present additional hurdles. One pathway could involve Starlink partnering with an enfranchised local entity to resell capacity directly to consumers.
Simulations at a 25° minimum elevation yielded more favorable availability metrics, but the 40° threshold used here offers a conservative view aligned with Starlink’s FCC filings. As more satellites are launched and gateways deployed, the Philippine availability gap is expected to narrow, paving the way for eventual trials and service rollout.