LTE-Advanced Is the Real 4G

More network capacity, faster data speeds, and better coverage will come from LTE-Advanced mobile technologies

8 min read
LTE-Advanced Is the Real 4G
Illustration: Eddie Guy

Have you ever called your cellphone carrier to report poor signal strength? Sure you have. And did that carrier do anything significant to fix the problem? Of course it didn’t—unless you live in South Korea.

“I guarantee you—if I call my carrier tonight and complain about not getting a good signal in my bathroom, they will send someone to install a repeater first thing tomorrow morning,” said Wonil Roh during an interview in Suwon last October.

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Nuclear Energy Brinkmanship in Ukraine

The Zaporizhzhia power plant is a strategically important prize, but war damage could be calamitous

6 min read
Barbed wire in the foreground frames a power plant in the distance across a wide river.

The Ukrainian-held city of Nikopol has been the target of frequent shelling by Russian invaders from the Zaporizhzhia Nuclear Power Plant, seen here from Nikopol, across the Dnipro River. Much of the Zaporizhzhia Region has been occupied by Russia since early in the war.

Dmytro Smolyenko/Ukrinform/Future Publishing/Getty Images

A battle of nerves and steel is raging at Europe’s largest nuclear power plant, which Russia captured in March. Russian forces use the Zaporizhzhia plant as a safe haven for troops and equipment, including artillery that is shelling Ukrainian-held territory directly across the Dnipro River. Ukraine is launching a counteroffensive to retake occupied territory, including Zaporizhzhia. And, all the while, each blames the other as explosions rock the nuclear site.

According to a Reuters report today, Russia’s Defense Department may order the plant to shut down, citing shelling damage to the plant’s “back-up support systems.” Yesterday most plant workers were allegedly told not to come to work tomorrow, according to Ukranian intelligence, which warns the Russians may be planning a dangerous “provocation.”

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Nvidia’s CTO on the Future of High-Performance Computing

The company’s Earth-2 supercomputer is taking on climate change

5 min read
portrait of Nvidia’s CTO, Michael Kagan on a gray background

Nvidia’s CTO Michael Kagan is an IEEE senior member.

Nvidia

In 2019 Michael Kagan was leading the development of accelerated networking technologies as chief technology officer at Mellanox Technologies, which he and eight colleagues had founded two decades earlier. Then in April 2020 Nvidia acquired the company for US $7 billion, and Kagan took over as CTO of that tech goliath—his dream job.

Nvidia is headquartered in Santa Clara, Calif., but Kagan works out of the company’s office in Israel.

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Keysight
Keysight

As 5G evolves into 6G networks, it will be critical that it adopt the most energy-efficient technologies to reduce carbon emissions and our dependence on non-renewable resources.

In terms of increased sustainability, 6G will need to aim directly at lessening its overall environmental impact, including water consumption, raw material sourcing, and waste handling. But it is also important to consider the indirect impact of 6G networks can have on sustainability by conserving resources and minimizing waste in either existing use-cases or novel use-cases.

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