computer science

O3b Networks

O3b Networks is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand O3b Networks rather than just read about it. In short: O3b Networks Ltd. was a network communications service provider building and operating a medium Earth orbit (MEO) satellite constellation primarily intended to provide voice and data communications to mobile operators and Internet service providers. O3b Networks became a wholly owned subsidiary of SES in 2016 and the operator name was subsequently dropped in favour of SES Networks, a division of SES.

Key takeaways

O3b Networks belongs to computer science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect O3b Networks to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of O3b Networks from memory before moving on to harder problems.

Reference excerpt

O3b Networks Ltd. was a network communications service provider building and operating a medium Earth orbit (MEO) satellite constellation primarily intended to provide voice and data communications to mobile operators and Internet service providers. O3b Networks became a wholly owned subsidiary of SES in 2016 and the operator name was subsequently dropped in favour of SES Networks, a division of SES. The satellites themselves, now part of the SES fleet, continue to use the O3b name.

Overview The network combines the relatively large reach of satellite with high speed and medium latency to deliver satellite Internet services and mobile backhaul services to emerging markets. The name "O3b" stands for "Other 3 billion", referring to the population of the world where broadband Internet is not currently available. Orbiting at an altitude of 8,062 kilometres (5,009 mi), less than one quarter of the altitude of geostationary satellites, the O3b satellite constellation of 20 Ka-band based satellites significantly reduces communication latency.

After initially planning to launch in 2010, the first four satellites were launched on 25 June 2013. A second four satellites were launched in July 2014, and another four in December 2014 bringing the satellite constellation to 12 satellites. Three years later, four additional satellites were launched in March 2018, and in April 2019, the final four were launched to bring the constellation to 20 satellites, including the three current backup satellites which are used as in-orbit spares. In September 2017, SES announced O3b mPOWER, the next generation of O3b satellites for broadband internet services, and placed an order for an initial seven from Boeing Satellite Systems. The O3b mPOWER constellation of MEO satellites would "be able to deliver anywhere from hundreds of megabits to 10 Gbits to any ship at sea" through 30,000 spot beams, with software-defined routing to direct traffic between the MEO satellites and SES' geostationary fleet. The number of O3b mPOWER satellites ordered was increased to 11 and then 13, and on 16 December 2022, the first two O3b mPOWER satellites were successfully launched, with four more in 2023, and the service began operations alongside the existing O3b constellation in April 2024. The seventh and eighth (upgraded) satellites were launched in December 2024, and began service in June 2025, increasing the constellation's capacity.

Ownership O3b was founded by Greg Wyler in 2007. The company was financially backed by SES, Google, HSBC, Liberty Global, Allen & Company, North Bridge Venture Partners, Soroof International, Development Bank of Southern Africa, Sofina and Satya Capital. In April 2016, SES announced that (subject to regulatory approvals which were expected to be completed by the end of 2016) it would pay US$20 million to increase its fully diluted ownership of O3b from 49.1% to 50.5%, taking a controlling share in the company. In May 2016, SES said it would raise another US$710 million to purchase all of O3b Networks, exercising a call option with O3b minority shareholders and eliminating the possibility of an O3b stock offering, and then subsequently announced the completion of the capital raising and completion of the acquisition.

… excerpt ends here. Continue reading the full article.

Worked examples

Example 1 — a first encounter with O3b Networks

Start with the simplest possible case. Write down what O3b Networks claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to O3b Networks before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about O3b Networks ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of O3b Networks

In research: O3b Networks appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses O3b Networks in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: O3b Networks is common in secondary-school and first-year university syllabi. It links to neighbouring topics Google, Internet technology companies of the United States, SES (company), so understanding it makes those chapters shorter.
In everyday life: Look for O3b Networks outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study O3b Networks in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what O3b Networks means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain O3b Networks out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is O3b Networks in simple terms?

Why does O3b Networks matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study O3b Networks?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on O3b Networks.