Communication Technology

  

 

 

 

OneWeb

 

One Web is a satellite communication system which is designed to provide broadband data service. OneWeb is a global satellite communications company that aims to provide affordable, high-speed internet connectivity to people around the world, particularly in underserved and unserved regions. The company plans to achieve this by building and operating a constellation of Low Earth Orbit (LEO) satellites. The OneWeb system uses the Ku-band for the radio frequency (RF) links between the satellites and user terminals, and the Ka-band for the RF links between the satellites. The system is designed to provide high-speed internet connectivity with low latency, aiming to offer speeds of 100 Mbps or more and latency of less than 50 milliseconds. The company has made significant progress in launching its satellite constellation, with the goal of delivering a broadband internet connection anywhere on Earth

 

 

Orbit and Constellation

 

The OneWeb satellite constellation is designed to provide global, high-speed internet connectivity, particularly in underserved and unserved regions. Here are some details about the orbit and constellation of OneWeb:

  • The OneWeb constellation is a Low Earth Orbit (LEO) satellite network, currently the second largest in the world, with plans to deploy 648 satellites to provide affordable internet worldwide.
  • The company has made significant progress in launching its satellite constellation, with approximately 542 satellites launched as of January 2023.
  • The satellites operate in LEO, which allows for low latency and high-speed internet connectivity. The connectivity is accessible in all areas over 50 degrees latitude, with latency of less than 50 milliseconds and speeds of 100 Mbps or more

 

 

 

 

Spectrum and Bandwidth

 

The OneWeb system operates in the Ka-band and Ku-band radio frequencies for the communication links between the satellites, gateways, and user terminals. The specific frequency ranges used by the OneWeb Phase 2 Deployment for different types of links and transmission directions are as follows:

  • Gateway-to-Satellite: 27.5 – 29.1 GHz, 29.1 – 29.5 GHz, 29.5 – 30.0 GHz
  • Satellite-to-Gateway: 17.8 – 18.6 GHz, 18.8 – 19.3 GHz, 19.3 – 19.7 GHz, 19.7 – 20.2 GHz
  • User Terminal-to-Satellite: 12.75 – 13.25 GHz

The system is designed to meet all the necessary regulatory requirements and limits within the frequency ranges used by OneWeb, ensuring compliance with the ITU Radio Regulations and the Commission’s Part 25 rules

Frequency band for OneWeb system is as shown below (according to FCC document)

 

 

 

 

FCC

 

[1] ONEWEB NON-GEOSTATIONARY SATELLITE SYSTEM (LEO) - PHASE 2: MODIFICATION TO AUTHORIZED SYSTEM

 

 

YouTube

 

[1] How OneWeb's system works

[2] OneWeb Live Stream

 

 

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