Context: Starlink has received regulatory clearance from IN-SPACe (Indian National Space Promotion and Authorisation Centre) to launch its satellite-based internet services in India. Starlink becomes the third company to receive approval for satellite communication (satcom) services, after OneWeb and Reliance Jio.
Relevance of the topic:
Prelims: Key facts about Starlink Project.
Mains: Space Internet.
Starlink Project
- Starlink is the name of a satellite network developed by the private spaceflight company SpaceX to provide high-speed internet to remote locations.
- Location: Starlink satellites are placed in an altitude range between 350 km-1200 km in Low Earth Orbit (LEO).
- Lifespan: One satellite has a lifespan of approximately five years.
- Constellation:
- As of March 2024, the constellation consists of over 7000 satellites.
- SpaceX plans to have ~42,000 satellites in its megaconstellation.
- Key features:
- Starlink utilises an automated collision avoidance system to manoeuvre the satellites to avoid crashing into other satellites in space.
- Satellites have an advanced end-of-life mechanism and ION propulsion system with argon thrusters. The satellites upon re-entering the Earth's atmosphere, disintegrate completely and burn (with no chance of any piece hitting the ground).
How is Starlink different?
1. Terrestrial broadband services:
- Terrestrial telecom services rely on:
- Fibre-optic cables
- Digital Subscriber Lines (DSL)
- Cellular towers
- Limitations: These infrastructures are limited to urban and suburban areas, where it is feasible to install physical network infrastructure.
- Starlink operates using LEO satellite technology, which allows it to provide internet access in areas where traditional broadband infrastructure is impractical/uneconomical to deploy—such as remote villages, mountainous regions, and offshore locations.
2. Conventional Internet Services:
- Traditionally, internet services via satellite have relied on high-Earth orbit (HEO) or geostationary orbit satellites, positioned over 30,000 km above sea level.
- LEO satellite constellations orbit the Earth at a much lower altitude—typically 200 km-2000 km.
How does Starlink work?
- Starlink offers internet connectivity via a network of LEO satellites from space directly to the devices.
- Users require a Starlink dish and router, which communicate with the satellites orbiting Earth.
- The dish automatically aligns with the closest Starlink satellite cluster, ensuring uninterrupted connectivity.
- Starlink is designed for fixed-location use, but with additional hardware, it can also support internet access in moving vehicles, boats, and aircraft.
Read More: What is Satellite Internet?
Benefits of LEO Internet Services:
- Lower latency:
- LEO satellites, being closer to Earth, reduce signal travel time, resulting in faster and more responsive connectivity.
- In contrast, signals from geostationary satellites must travel much farther, leading to delays and slower speeds.
- Better efficiency: Shorter distance means lower signal loss and more reliable communication with lower power requirements and smaller antennas.
Challenges of LEO satellites:
- Limited coverage per satellite: Since LEO satellites orbit closer to Earth, each one covers a smaller area, requiring a larger constellation to provide global coverage.
- Higher operational costs: Maintaining a network of fast-moving satellites requires extensive ground infrastructure, making it more expensive to deploy and operate compared to geostationary satellites.
What are the benefits of Starlink?
- Deliver internet service in the remotest places, and help in addressing the digital divide among urban and rural regions.
- Offer lower latency (25-50 ms) compared to traditional geostationary satellite internet (600+ ms), making it ideal for video conferencing, online gaming, and HD streaming.
- Can be utilised by commercial fishing shippers, merchant vessels, off-shore oil drilling stations, deep sea research workers and solo sea voyagers to connect with the internet.
- Useful during natural disasters such as tsunamis, cyclones or earthquakes that can destroy physical infrastructure such as telecom towers.
What are the drawbacks of Starlink?
- High cost: LEO-based satellite services are expensive to deploy and operate, which could lead to premium pricing and limited data plans for consumers. Based on current expectations, Starlink’s price is almost 10-14 times higher than India’s major broadband providers.
- Scalability concerns: While Starlink can offer speeds up to 200-250 Mbps, capacity could be an issue considering the limited number of satellites hovering around India. Expanding Starlink's network to accommodate more users without compromising performance remains a challenge.
- Higher latency in urban areas: Compared to terrestrial broadband, Starlink may experience higher latency and lower capacity in densely populated areas, making it less competitive in cities where fibre-optic networks dominate.
- Weather interference: Satellite signals require a clear line of sight and can be disrupted by weather conditions like heavy rain or storms.
- Privacy concerns: Lack of clarity on user privacy as Starlink operates under US jurisdiction. The data is routed through foreign satellites which has potential for commercial exploitation.
Latest Developments
- Centre has asked SpaceX to:
- set up a control centre in India to enable suspension or shutdown of communications services in sensitive and troubled areas (whenever required) to maintain law and order.
- allow call interceptions by law-enforcement agencies through official channels when the need arises.
- Starlink and TRAI:
- Telecom Regulatory Authority of India (TRAI) and SpaceX are negotiating satellite spectrum pricing and spectrum duration. TRAI has proposed a five-year period for spectrum allocation, whereas Starlink is advocating for a 20-year licence.
- TRAI is likely to recommend Starlink to initially focus on providing services in mobile dark areas (regions where terrestrial networks are unavailable).