Bonus features: Sony uses Blu-ray tech to simulate 466Mbps laser link from the stratosphere to space

Together with Japanese space agency, now imagining optical comms terminals on sats


Sony Computer Science Laboratories (CSL) and the Japanese space agency have conducted an experiment to transmit data from the stratosphere to space and declared the results promising as a complete file was delivered at 446 megabits per second.

Data networking is hard in space, because distances and latency are substantial and radiation can impact transmissions. Those challenges have led to efforts like the Interplanetary networking SIG and its delay-tolerant networking (DTN) tech that makes internet standards work despite the challenges of space.

DTN also addresses the problem of network nodes disappearing over the horizon – and therefore beyond the reach of radio or optical signals – by (as its name implies) not getting grumpy if packets take a while to reach their intended destinations.

Jaxa and Sony took up the task of simulating DTN at work on a transmission from the stratosphere to low-Earth orbit, over an optical connection.

Sony Jaxa DTN FEC test

Sony and JAXA's simulated network.
Click to enlarge

The two entities haven't offered a lot of detail about their experiment, but did state that DTN was used alongside a Sony IP called CSL Forward Error Correction (FEC) – a laser-reading technique derived from the Japanese giant's Blu-ray optical disk technology.

FEC has already been used in space, in an experiment called the Small Optical Link for International Space Station (SOLISS). That effort established a 100Mbit/sec link from the ground to the ISS in March 2020.

By hitting 466Mbit/sec, this latest test went rather faster than SOLISS. Jaxa and Sony CSL therefore reckon "a solution is in sight to the high speed, high bandwidth, and low energy consumption requirements of point-to-point optical internet service in the stratosphere or low-Earth orbit." The two have started to imagine "small optical communication terminals installed on low-Earth orbit satellite constellations, or unmanned aircraft for stratospheric telecommunications."

The Register wonders if it could also deliver the ultimate in cold storage: an orbiting Blu-ray archive. ®

Broader topics


Other stories you might like

  • Verizon: Ransomware sees biggest jump in five years
    We're only here for DBIRs

    The cybersecurity landscape continues to expand and evolve rapidly, fueled in large part by the cat-and-mouse game between miscreants trying to get into corporate IT environments and those hired by enterprises and security vendors to keep them out.

    Despite all that, Verizon's annual security breach report is again showing that there are constants in the field, including that ransomware continues to be a fast-growing threat and that the "human element" still plays a central role in most security breaches, whether it's through social engineering, bad decisions, or similar.

    According to the US carrier's 2022 Data Breach Investigations Report (DBIR) released this week [PDF], ransomware accounted for 25 percent of the observed security incidents that occurred between November 1, 2020, and October 31, 2021, and was present in 70 percent of all malware infections. Ransomware outbreaks increased 13 percent year-over-year, a larger increase than the previous five years combined.

    Continue reading
  • Slack-for-engineers Mattermost on open source and data sovereignty
    Control and access are becoming a hot button for orgs

    Interview "It's our data, it's our intellectual property. Being able to migrate it out those systems is near impossible... It was a real frustration for us."

    These were the words of communication and collaboration platform Mattermost's founder and CTO, Corey Hulen, speaking to The Register about open source, sovereignty and audio bridges.

    "Some of the history of Mattermost is exactly that problem," says Hulen of the issue of closed source software. "We were using proprietary tools – we were not a collaboration platform before, we were a games company before – [and] we were extremely frustrated because we couldn't get our intellectual property out of those systems..."

    Continue reading
  • UK government having hard time complying with its own IR35 tax rules
    This shouldn't come as much of a surprise if you've been reading the headlines at all

    Government departments are guilty of high levels of non-compliance with the UK's off-payroll tax regime, according to a report by MPs.

    Difficulties meeting the IR35 rules, which apply to many IT contractors, in central government reflect poor implementation by Her Majesty's Revenue & Customs (HMRC) and other government bodies, the Public Accounts Committee (PAC) said.

    "Central government is spending hundreds of millions of pounds to cover tax owed for individuals wrongly assessed as self-employed. Government departments and agencies owed, or expected to owe, HMRC £263 million in 2020–21 due to incorrect administration of the rules," the report said.

    Continue reading
  • Internet went offline in Pakistan as protestors marched for ousted prime minister
    Two hour outage 'consistent with an intentional disruption to service' said NetBlocks

    Internet interruption-watcher NetBlocks has reported internet outages across Pakistan on Wednesday, perhaps timed to coincide with large public protests over the ousting of Prime Minister Imran Khan.

    The watchdog organisation asserted that outages started after 5:00PM and lasted for about two hours. NetBlocks referred to them as “consistent with an intentional disruption to service.”

    Continue reading
  • Suspected phishing email crime boss cuffed in Nigeria
    Interpol, cops swoop with intel from cybersecurity bods

    Interpol and cops in Africa have arrested a Nigerian man suspected of running a multi-continent cybercrime ring that specialized in phishing emails targeting businesses.

    His alleged operation was responsible for so-called business email compromise (BEC), a mix of fraud and social engineering in which staff at targeted companies are hoodwinked into, for example, wiring funds to scammers or sending out sensitive information. This can be done by sending messages that impersonate executives or suppliers, with instructions on where to send payments or data, sometimes by breaking into an employee's work email account to do so.

    The 37-year-old's detention is part of a year-long, counter-BEC initiative code-named Operation Delilah that involved international law enforcement, and started with intelligence from cybersecurity companies Group-IB, Palo Alto Networks Unit 42, and Trend Micro.

    Continue reading

Biting the hand that feeds IT © 1998–2022