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HyperBeamforming to improve internet access for high-speed train passengers – Technology Times

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Huawei has introduced HyperBeamforming, a new wireless technology designed to provide faster, more reliable mobile internet for passengers travelling on high-speed trains by reducing signal drops and strengthening network coverage along railway routes.

The solution, according to the Chinese technology company, addresses one of the biggest connectivity challenges on high-speed railways: maintaining stable mobile and internet services as trains move rapidly between cellular base stations.

HyperBeamforming uses advanced antenna technology and intelligent signal processing to direct wireless signals more accurately towards moving trains, enabling passengers to enjoy more consistent voice calls, video streaming, web browsing and other data-intensive services during their journeys, according to Huawei.

High-speed trains place significant demands on mobile networks because users move quickly through changing coverage areas, often resulting in interrupted calls and fluctuating internet speeds. Huawei said its new technology minimises these disruptions by improving how mobile signals are transmitted and received along railway corridors.

At the heart of the solution is a combination of intelligent beamforming and an 8-transmit, 8-receive (8T8R) antenna architecture. Beamforming enables mobile networks to focus radio signals directly towards trains instead of broadcasting them uniformly in all directions, strengthening coverage, increasing network capacity and improving spectrum efficiency.

Beyond enhancing passenger connectivity, Huawei said HyperBeamforming also supports digital railway operations by providing more dependable wireless communications for train control systems, operational monitoring and other mission-critical railway services.

The launch comes as rail operators worldwide invest in next-generation communications technologies to support smarter transportation systems and improve the passenger experience. Reliable onboard connectivity is increasingly viewed as a key service expectation, enabling commuters to work remotely, access cloud applications, stream entertainment and stay connected throughout their journeys.

Huawei said HyperBeamforming expands its portfolio of railway communications technologies, which also includes Future Railway Mobile Communication System (FRMCS) solutions and AI-powered railway networks designed to help operators modernise transport infrastructure for the digital era

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Police Arrest 24-Year-Old Suspected of Conveying Illegal Firearms in Lagos

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As part of its sustained efforts to combat illegal possession and trafficking of firearms, and other criminal activities across the State, operatives of the Command have arrested one Lukman Sanni, ‘m’, 24 years, suspected of conveying illegal firearms, during a stop-and-search operation at Iyana Isashi, Lagos State.

A search conducted on him led to the recovery of a locally made pistol, two (2) live cartridges and a suspected charm. Preliminary investigations are ongoing to establish the circumstances surrounding the possession and intended delivery of the recovered firearm and ammunition. The suspect is currently in custody and is providing useful information to aid the investigation.

The Commissioner of Police, Lagos State Command, CP Tijani Fatai, psc, mnips, reiterated the Command’s commitment to combating illegal firearms possession, arms trafficking, cultism and other criminal activities across the State. He urged residents to remain vigilant and promptly report suspicious activities to the Police, noting that credible information from the public remains vital to maintaining peace and security.

The post Police Arrest 24-Year-Old Suspected of Conveying Illegal Firearms in Lagos appeared first on Business Today NG.

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Frontier AI labs say their models refuted the Exponential Time Hypothesis. What does that mean?

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OpenAI released solutions to three blockbuster math problems that have long vexed researchers yesterday. One was a surprise rejection of the Exponential Time Hypothesis (ETH), a durable assumption in computer science that plays a large role in how we understand what is difficult to compute.

As with previous proof-drops from the frontier lab, scientific communities responded with a mixture of thrill and dismay. Anthropic mathematician Levent Alpöge suggested that OpenAI was basing its solutions from pre-existing work, and hours later, Anthropic subsequently released its own refutation of ETH.

However, OpenAI’s process is evolving. This time, the lab structured its releases differently for each of the three disciplines involved: Mathematicians got the work dropped on GitHub; the computer scientists formed a working group, asked for the proofs to be shared publicly and OpenAI to fund a conference to discuss them; the physicists formed a working group that will determine how their result will be released.

MIT Professor Ryan Williams is the computer scientist who is organizing his field’s response to the new finding. Williams, whose work focuses on these questions of computational complexity, has criticized OpenAI’s approach in the past, calling its proof dump earlier this October a “DDOS attack on mathematicians.”

However, he agreed to collaborate with the frontier labs in order to help shepherd ideas that are vital to the field, he told TechCrunch. The lab asked him to help interpret the solution, along with UC San Diego computer scientists Russell Impagliazzo and Ramamohan Paturi, who first published the ETH in 1999.

Their first step was to release an open letter calling for feedback from scientists interested in these problems and a discussion of the norms around AI contributions to their work.

“Some parts [of OpenAI’s proof] are, maybe you could say routine, but then yes, there are two or three alien-looking parts, and it’s exactly these parts that that I saw that made me think, wow, this is something that the whole community needs to work on together,” Williams told TechCrunch.

Are you down with P vs NP?

The ETH is part of a broader class of problems known as P vs NP, which has animated computer science and many other fields for decades. Reductively, researchers are trying to understand if any problem whose solution can be easily verified (NP) can also be easily solved (P).

A simple example is the game Sodoku: Once a solution to a puzzle is in place, it can be quickly verified, but finding the solution is time-consuming. That dynamic is true across a range of important problems, and the insight underpins cryptographic systems: When you have the key to an encoded message, you can reveal it, but actually cracking an effective code takes too long to be useful.

However, scientists have yet to prove whether that is always true. “P = NP is saying that, not only can you verify Sudoku solutions when they exist, you can just generate them,” Williams said. “P = NP is asserting that this is true for every single problem you can verify quickly — if you can verify it quickly, you can solve it quickly. So this just seems too good to be true.”

That’s why most scientists assume that P ≠ NP. ETH provided evidence for that. It basically says that even the fastest computer algorithm needs exponentially more time to find a solution as the number of variables grow in a specific class of tricky logic puzzle.

The claims from OpenAI and Anthropic is that their models have come up with algorithms that solve those puzzles in “sub-exponential” time, meaning faster than the speeds previously thought possible. If true, they may have proven the EFT to be false — refuted it, in scientific terms — and maybe opened up a path for algorithms that generally perform P = NP.

“Every computer scientist should probably put a little more weight on the plausibility of P = NP, but one’s weight may vary,” Williams said. “I do think that it kind of calls into question a lot of the intuitions that we thought we had about … how tractable [hard NP problems] are. I also think that this is probably not the final answer either. I don’t think that OpenAI’s algorithm could possibly be the best algorithm you can get.”

The work ahead for computer scientists

The durability of ETH has lead to it being included in many scientific papers over the past decade that will need to be revisited if the AI labs claims that they’ve proven it wrong holds up, Williams said.

“This is partly why I was asking or pushing OpenAI to support a conference on this — it’s going to affect many researchers’ works, and we need to figure out, okay, what happens next besides understanding the algorithms. We need to understand, how should the foundations change compared to what we had before?” he said.

Before scientific concerns, there are cybersecurity questions. Williams said that an improved algorithm could imply that cryptographic systems relying on certain key sizes could be considered broken. So one of the first questions he asked OpenAI science lead Dan Roberts “was if they had checked that this affects any crypto systems … is anything insecure now? And apparently, they checked, and they were reasonably confident that this didn’t … imply any breaks.”

This new AI paradigm of scientific discovery is still a work in progress, but Williams says he is optimistic despite real concerns, particularly about training the next generation of scientists. Being a computer scientist who does high level math has perhaps made the adjustment easier for him than for pure mathematicians.

Still, he says AI is “forcing people to be a little more ambitious about the kind of work that they do, and to think more deeply about, okay, if all the things I used to work on are now low hanging fruit for AI, how can I raise the bar for the kind of scientific questions I want to ask?”

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