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Showing posts from September, 2019

Is LiFi (Light-Fidelity) Ready for Beyond-5G?

Last year I wrote about LiFi, how it can play a role in densification and beyond-5G. LiFi (sometimes written as Li-Fi but I believe LiFi is the correct way to write it) has been in news recently because of world's first backhaul trial with an ordinary solar cell as data receiver in Orkney.
Immensely proud of the @LRDC @kikepoves team for the successful launch of the world's first #LiFi backhaul trial with an ordinary solar cell as data receiver. Thanks to @DCMS@5GRuralFirst#5G project. This means people on Graemsay (Orkney) can now watch 4k TV! pic.twitter.com/SkQw8gEn1M — Harald Haas (@dlarah15) July 4, 2019 Land Mobile has a good write up on this here.
There is also misunderstanding sometime about different types of light communications being referred to as LiFi. The picture above shows difference between OCC (Optical Camera Communications), VLC (Visible Light Communications), LiFi & FSO (Free Space Optics).

Rather than talk too much about the technology, I will point …

Beyond Hyper-Connectivity

Dr. Dong-Seung Kwon, ETRI spoke at the 1st 6G Wireless Summit in Oulu back in March. His talk was focussed on beyond hyper-connectivity.

According to PCMag:

In general, hyperconnected refers to the high-tech communications of the 21st century delivered primarily by the Internet, all of which is 24/7 and never ceases. It encompasses radio, TV, phone and video calls, texting, email, blogs, forums, chat rooms, instant messaging and social media, as well as access to corporate data. The smartphone has been a major catalyst, connecting more people to more things than any other electronic device.

The following is the summary of Dr. Dong-Seung talk:

We are now moving toward hyper-connected world by 5G mobile technology, which is to extend the market to vertical market and the true personalized service keeping privacy. While recently we have experienced the various intelligent services based on massive big data coming from the current 4G technology, I would like to mention the several technica…

Connectivity from the Stratosphere by Airbus' Zephyr

The following post uses a report from ITU news in combination with a presentation from UNESCAP.

Zephyr is an ultra-light solar-powered high-altitude platform station (HAPS). Solar energy powers daytime flight as well as re-charging batteries for night-time operations. It has a 25 metre wingspan (one third the width of an Airbus A380) and can launch from a selection of sites strategically positioned across the globe.

Zephyr flies above the weather and regular air traffic, covering distances of over 1000 nautical miles a day — that’s 1852 kilometres! Of particular interest to telecoms operators is Zephyr’s ability to remain persistent over a designated location for long periods of time, delivering connectivity services across a wide area.

Zephyr weighs less than 75 kilograms, the same as two aircraft seats. It is this highly optimized aircraft mass, together with the available power of the Zephyr propulsion system and the high efficiency of the solar cell technology, which permits Zephyr …