Facebook hits 20Gbps in testing for internet drone data transmission - caudlebude1972
Facebook has succeeded in transmitting information at almost 20Gbps 'tween two towers in Southern California in tests of a applied science key to its plans to deliver internet service to rural areas using drones.
The tests were conducted earlier this year and made use of frequencies in the so-called E-band, a group of millimetre wave frequencies between 60 and 90GHz.
Such signals are capable of high-bandwidth information transmission but are susceptible to attenuation from distance, brave, and obstacles, thus they are typically used for short-range, point-to-point transmissions.
Facebook used a 60-centimeter dish to send data over a 13-kilometer link between Malibu and Woodland Hills.
That test initially shot information at 'tween 100Mbps and 3Gbps and allowed engineers to call for transmission data on clear days and during clouds, haze, high winds, and rain down, Facebook same in a Thursday blog post.
Facebook A 1.2-meter E-band antenna mounted happening a two-axis of rotation positioner for autonomous pointing and tracking radio signals every bit theatrical role of tests by Facebook on high-speed information transmission system.
For the tests, Facebook ended up building many of its own microwave transmission components into the system, which utilised a 1.2-meter saucer happening the receiving end.
The signal acceptable by the stunner would come by half if it was mispointed by conscionable 0.2 degrees, so truth was key.
The get the data rate awake to 20Gbps, the dish needed to be well-nig spot along: an accuracy of Thomas More than 0.07 degrees. In position, that's the equivalent of a baseball pitcher striking a quarter, Facebook said.
The distance achieved is significant and already useable for point-to-point golf links that could transmit high-bandwidth internet signals terrestrially.
But information technology isn't quite far plenty to be used as the backhaul link for the company's envisaged poke internet service.
Facebook's Aquila drones will deliver internet access to remote areas from altitudes of 'tween 60,000 and 90,000 feet, rough 18 to 27 kilometers. Because the drones won't always be overhead of the ground station, the link distance could be longer.
For the drone help, Facebook will need to increase the range to between 30 and 50 kilometers and increment the bandwidth to 30Gbps, the company said.
The next step for the California tests is a ground-to-air organization that will transport data to a Cessna aircraft with a data transceiver on display panel.
Facebook A radio testing gimbal attached to a Cessna aircraft as part of tests by Facebook.
Testing of a system that can snap a 20Gbps data link to the aircraft at an altitude of adequate to 20,000 feet (six kilometers) has already begun. In 2017, Facebook plans to up the speed to 40Gbps both to and from the aircraft.
"We still have some connectivity and technical challenges to resolve before the technology is fully ready for deployment," Facebook said.
Source: https://www.pcworld.com/article/410999/facebook-hits-20gbps-in-testing-for-internet-drone-data-transmission.html
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