MediaTek To Offer New LTE SoC

MediaTek has shown off one of its most interesting SoC designs to date at the China Electronic Information Expo. The MT6595 was announced a while ago, but this is apparently the first time MediaTek showcased it in action.

It is a big.LITTLE octa-core with integrated LTE support. It has four Cortex A17 cores backed by four Cortex A7 cores and it can hit 2.2GHz. The GPU of choice is the PowerVR G6200. It supports 2K4K video playback and recording, as well as H.265. It can deal with a 20-megapixel camera, too.

The really interesting bit is the modem. It can handle TD-LTE/FDD-LTE/WCDMA/TD-SCDMA/GSM networks, hence the company claims it is the first octa-core with on board LTE. Qualcomm has already announced an LTE-enabled octa-core, but it won’t be ready anytime soon. The MT6595 will – it is expected to show up in actual devices very soon.

Of course, MediaTek is going after a different market. Qualcomm is building the meanest possible chip with four 64-bit Cortex A57 cores and four A53 cores, while MediaTek is keeping the MT6595 somewhat simpler, with smaller 32-bit cores.

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MediaTek’s Octa-Core Processor Tested

MediaTek raised quite a few eyebrows earlier this year when it announced it would build the world’s first proper ARM octa-core, not a big.LITTLE design. The MT6592 has now popped up on a Chinese site, with the first Antutu results.

It scored 25,496, which places it behind the 1.7GHz Snapdragon in the HTC One, but it’s still a lot faster than the Nexus 4’s Qualcomm APQ8064, although throttling may have something to do with that. The score seems too high, but not long after the results emerged, a number of mobile sites started talking about disappointing results, claiming that MediaTek’s octa-core was somehow supposed to end up on a par with Samsung’s latest Exynos 5 big.LITTLE chip and the Qualcomm 800.

This of course is utter rubbish and FUD of the highest order.

The 28nm MT6592 is indeed an octa-core, but it has eight A7 cores, not a combo of A15 and A7 cores. The A7 is about one fifth of the die area of an A15 and according to ARM it consumes one quarter to one fifth of the power, making such comparisons asinine. In other words, MediaTek’s octa-core should end up a lot smaller and cheaper than a quad A15, maybe even a quad A12. That is why we find the 25,496 result hard to believe – it should be less, not more. For example, the Tegra 4 on Shield hits about 36,000, yet it’s a much bigger chip, on a device with more RAM.

The benchmarked chip ran at 1.7GHz, but MediaTek said the MT6592 should have no trouble hitting 2GHz, which could make it faster than a Snapdragon 600. What’s more, the tested device featured 1GB of RAM, 720p display and a Mali-450 GPU, so it is clearly not high-end.

However, the big problem for MediaTek’s curious new SoC is the sheer number of cores. Most apps simply can’t put them to good use and unless MediaTek has a clever trick up its sleeve, the chip might not be nearly as fast in real world applications. It does look promising in benchmarks, though.

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Satellite Phone Encryption Cracked

German researchers claim to have cracked the algorithm that secures satellite phone transmissions.

Benedikt Driessen and Ralf Hund from Ruhr University have reverse engineered the GMR-1 and GMR-2 voice ciphers used in a lot of satellite systems. These are used by, among others, government agencies and the military.

Bjoern Rupp, CEO at GSMK Cryptophone said, “This breakthrough has major implications for the military, civilians engaged on overseas operations, or indeed anyone using satellite phones to make sensitive calls in turbulent areas.”

Their report is titled “Don’t Trust Satellite Phones” and shows how someone with a “suitably programmed computer” and software radio capable of receiving satellite frequencies can hack calls. These include ones made by disaster relief agencies and the military.

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China Denies Hack Attack

China has denied involvement in hacking US environment monitoring satellites.

Last week the US-China Economic and Security Review Commission released a draft report about several incidents where US satellites were interfered with in 2007 and 2008.

The Commission did not say that the attacks were traced back to China, but it did cite China’s military as a prime suspect, due to the similarity of the techniques used with “authoritative Chinese military writings” on disabling satellite control.

The hackers gained access to the satellites on at least four occasions through a ground station in Norway. The unauthorised access lasted for between two and 12 minutes. While the attacks did no real damage, they did demonstrate that it is possible to hijack satellites, which is a worrying realisation when military satellites are taken into consideration.

China has a bad reputation throughout the world for alleged cyber attacks, often being the first to blame when a major attack has been discovered. The US has not been the only target either, with alleged attacks against Canada and France having been reported earlier this year.

“[The US] has always been viewing China with colored lenses. This report is untrue and has ulterior motives. It’s not worth a comment,” said Hong Lei, a spokesperson for the Chinese Foreign Ministry, according to Reuters.

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