Meganet

Ofcom, the Super regulator that looks after radio spectrum management and broadcasting amongst other things has reported on a trial that used open source software to run a digital audio broadcast (DAB) transmission.

The trial was based in Brighton and used Linux software and an software defined radio (SDR) to broadcast DAB signals in the Brighton area, though the trial was only low power (the output of the SDR was set to 5mW) a signal could be received over 7Km away. There was also no detectable interference to the BBC local DAB multiplex which was around 3Km away from the trial transmitter.

The trial was carried out privately under Non-Operational Test and Development licence issued by Ofcom.

The full report is here, Ofcom doesn't endorse any software or hardware used, but the report contains references to all the hardware and software used.

Initially the trial was conducted using 2 laptops, but the software was integrated on to a single (rack mount) PC running xubuntu. It would also be possible to run at least some of the software (multiplexor etc) on a RaspberryPi.

Maybe this will lead the way for other Ofcom 'approved' trials such as running lower power GSM networks also using open source software.

Ofcom has issued a statement with respect to the 28GHz Broadband Fixed Wireless Access (BFWA) licences of Cable and Wireless (now Vodafone) and Urban Wimax.

The licenses were due to expire on 31st December 2015 and now they will be made indefinite.

The licensees can use the bands for equipment that complies with Interface Requirement 2048 (IR 2048) in-line with other licensees.

From January 2016, there will be new pricing set which incentivises the licenses to utilise the spectrum. Pricing has not be set yet.

28GHz allows high bandwidth point-to-point links which can be used for backhaul and with Vodafone's purchase of C&W it makes sense to use their own spectrum for mobile backhaul.

Ofcom, the super regulator has issued a statement on the award of the 600MHz band (550 to 606 MHz). This has been awarded to Arqiva for the provision of Digital Terrestrial Television (DTT) multiplexes. Arqiva will utilise MPEG4 video encoding and DVB-T2 transmission services (as used by Freeview HD).

This is a temporary license, though it will run through until 2026, unless Ofcom give Arqiva 24 months notices in which case it can be revoked in 2018.

The ability to terminate the license is to allow migration of DTT services from the 700MHz band to the 600MHz band in line with EU harmonised spectrum regulation and will allow the 700MHz band to be used for wireless broadband services.

While breaking, this story really comes as now surprise to me that the City of Detroit has filed for chapter 9 bankruptcy protection.

In a surprise move today, the city's state appointed emergency manager, Kevyn Orr asked for permission to put the city under Chapter 9 protection this afternoon in court. Currently, Detroit is $18.5 billion dollars in dept. Currently, the Governor of Michigan has to sign off on the bankruptcy since it is the largest municipal bankruptcy in U.S. history.

Details are still forthcoming so we will be posting updates as we find them.

Source: Detroit News.

Ofcom, the Super Regulator that oversees radio spectrum (amongst its many duties) has published a statement allowing mobile network operators (MNOs) to utilise their 2G and 3G bands for 4G use, without applying for a license variation.

This affects the 900MHz, 1800MHz and 2100MHz bands. Ofcom has also allowed an increase in power of 3dB in the 900MHz band to align it with power levels in the 800MHz band.

This is in-line with Ofcom's policy to liberalise licenses and make them technology neutral and will allow the MNOs to roll-out 4G (LTE) services on any of their spectrum without regulatory hinderance.

Michael Birch originally founded Bebo and sold it to AOL for $850m on May 19, 2008 making him one of the most successful UK entrepreneurs with his wife. AOL then sold the ailing company to Criterion Capital Partners in June 2010 for around $10m.

Birch then rejoined company as a strategic advisor on December 9, 2010.

Birch today announced on twitter that he has re-purchased the social media site for $1m.

Though the site has been left behind other social media sites like Facebook, Birch can maybe bring it into the forefront again and do something clever with it.

Graphene is the new wonder substance that could replace silicon for a new generation of integrated circuits and other devices. It is also much more conductive than steel and stronger.

Plastic Logic are leaders in the field of flexible e-ink displays (both colour and monochrome) which use their organic thin-film transistor technologies.

Cambridge Graphene Centre investigates the science and technology of graphene, carbon allotropes, layered crystals and hybrid nanomaterials.

With this collaboration, Plastic Logic have donated large scale deposition equipment to support the acceleration of manufacturing scale-up of developments on graphene which will then: -

• To develop graphene as a transparent, highly conductive layer for plastic backplanes, used to drive unbreakable Liquid Crystal Displays (LCD) and flexible Organic Light Emitting Diode (OLED) displays; a market forecast to be worth $40bn by 2020 (IHS 2013).
• To develop novel transistor structures with graphene-like materials as the active layer, delivering a step change over the device performance currently possible on plastic, while retaining the ultimate flexibility of the devices.
• Leverage Plastic Logic’s expertise in the industrialization and volume manufacture of electronics on plastic, exploiting the commercialisation of graphene for flexible electronics. This will include key high value segments in the developing new market for flexible plastic sensors, forecast to be worth $2.2bn overall in 2020 (IDTechEx 2011).

The UK is a world leader in graphene research and this could push the UK into the forefront of usable technologies actually using it.

Ofcom, the Super regulator that looks after (amongst other things) radio spectrum allocation has made the bands 870-876 MHz and 915-921 MHz available for use by short range devices (SRDs) and radio frequency identification (RFID) use. This is in-line with European (CEPT) policy. The bands are commonly used for RFID tags in the US.

Ofcom will hold a further consultation in Q4 2013 after CEPT publish their work on interference in these bands and will then publish the draft technical requirements and the full license exemption statement by early 2014.

Ofcom is also making the 24 GHz (21.65 to 26.65 GHz) license exempt for Short Range Radars (SRRs) for automotive use, in line with EU policy. Devices have been allowed to use this part of this band (24.25 to 26.65 GHz) on a temporary basis (since 2005), which was extended to the full 21.65 to 26.65 GHz in 2011. The regulations came into force in June 30th 2013.

The Innergie mMini DC10 is a car 'cigarette' charger. What makes this different to other chargers is that is has 2 USB sockets that allow charging of 2 devices simultaneously.There's also a nice blue LED between the USB slots showing that there's power.

It can output 5V at 2.1A making it suitable for charging tablets and other devices.

It comes with a cable that has a clever connector, if snapped together it will power an iPhone/iPad through the Apple dock connection, however if the connector is pulled apart, there's also a micro-USB connection suitable for charging non-Apple products. It's also powerful enough to charge a Blackberry device (which lots of other chargers fail to do).

This really is a useful device and has saved the day on many occasions and it actually does manage to produce a full 10W output.

Online prices vary widely, but it can be had for as low as £12 + shipping.

Definitely 10/10

Ofcom, the Super regulator that looks after radio spectrum amongst other things, has made more spectrum license exempt.

In the UK there is no such thing as unlicensed spectrum and all devices (whether they broadcast or receive radio transmissions) must be covered by a license as per the Wireless Telegraphy Act. Ofcom can issue a Standard Instrument (really an Act of Parliament) to cover certain frequency bands and uses making that spectrum license exempt, which means if the equipment is used as per the SI, it doesn't need a specific license.

Ofcom has made new spectrum available for SRDs (short range devices) such as range finding equipment for cars. There is now 5MHz of spectrum available between 10.575 to 10.6 GHz which will add to the existing range of 10.577 to 10.597 GHz and this came into force on 26th June 2013.

The existing band 10.675 to 10.699 GHz can continue to be used by existing systems, but it will be closed for new systems on 30 December 2014 giving manufacturers 18 months to switch to the new band.

Mobile terminal handsets using WiMAX or LTE in the 800MHz, 2011MHz and 2.6GHz bands will be license exempt (when connected to a licensed mobile network i.e. BT, EE, 3UK, O2 or Vodafone).

Various satellite terminals will also be license exempt in the 1518 to 1525 MHz, 1525 MHz to 1559 MHz, 1626.5 MHz to 1660.5 MHz and 1670 to 1675 MHz bands.

There's a really nice little iOS app (currently iPhone only) called Vizz that visualises your LinkedIn network.

You can see what industries your connections are in, where they're located, what companies they work for and who's changed roles recently.

Quite a useful little app, all for the princely sum of £0.69 (69p).

Admittedly I do know the author @hakimmobile, but that doesn't change the usefulness of the app.

A few weeks ago I received a Blackberry Q10 that I had won in an EE competition. It was sent directly to me from Blackberry in the UK. Unfortunately it was locked to EE and I am an O2 customer, but with help from Blackberry an unlock code arrived in Email the same day.

The Q10 was sent out with various bits configured for EE, which I queried and was told "once the new SIM works, the device gets the settings from the network", so again all well and good.

Next install Blackberry Link which is the new desktop software from Blackberry, again all well and good, except though it can now sync photos/music/documents/etc with the desktop (a Mac user) it no longer (compared to Blackberry Desktop Software for Mac) syncs Calendars and Contacts. The new BB10 devices (Z10 and Q10) are completely device centric and all email/calendar and contacts synchronisation is done by the mobile device itself.

I plugged in the old Blackberry Bold 9900 (which Blackberry Link recognised as a OS7 device) and it asked if it would like to transfer the databases, to which I confirmed.

All seemed well, except you have to set-up all the old email accounts/etc on the new device before it actually works and it seems not all of them were working (GMail specifically, luckily the set-up of a BB10 device can be done using WiFi so it doesn't need a SIM in the device to actually set it up).

The email accounts were all working, try the transfer again and all went well.
Then (after reducing the SIM from a normal size to a uSIM using a SIM cutting tool) put the old (u)SIM into the Q10 and bang, everything works (well at that point the phone needed unlocking, but that was very simple and just required entering the unlock code - though not in the way Blackberry had stated, go into settings, then security, SIM and then you are asked to unlock).

On the Mac iCloud is the default system for contacts and calendar, so on the Q10 just add a new Email account (i.e. iCloud account). That's where problems started. There is a known problem using iCloud for newer versions of BB10. The Email account is set-up fine as is contact sync, however it fails to set-up the calendar sync (with a credential issue).

It's also possibly to directly add a Caldav account in the advanced Email set-up, again the forums were awash with suggestions but it should be possible to just add caldav.icloud.com as the calendaring service, but again this failed with a credential issue and would not complete.

Search the forums and lo and behold there's a Blackberry knowledge base entry which states "there's a known issue with Apple's caldav services" (Apple uses CALdav for calendar synchronisation, it also used to work on older versions of BB10, the phone upgraded itself to v10.1.0.273 via the WiFi, some earlier version of 10.0 used to work). The forums also stated that after speaking to Blackberry users had been told to report the fault to their carrier who could then escalate to Blackberry, the more users/carriers reporting the fault would increase the escalation.

So decide to phone O2 and report the fault and managed to get through to the Blackberry specialist team, explaining that I had upgraded from a Blackberry Bold 9900 and was now using a Q10 and wasn't able to sync calendars. They explained they would look at the problem and get back to me, which they did. Unfortunately they wouldn't escalate the problem as it was a known issue by Blackberry and thus couldn't escalate. I tried to explain that even Blackberry themselves were telling users to go through their carriers to report the fault, but they were adamant that they wouldn't be able to report the fault as it was already "on the system".

So no calendar synchronisation, but the phone seemed to be working well apart from that, email coming through, twitter/Facebook/LinkedIn all seemed to be doing the right thing.

There are some immediate quirks though: -

• On the old Blackberry you can delete an Email on the device or delete it on the device and the Email server. this is no longer possible and deleting an email deletes it completely. This isn't disastrous it just means you get a lot of emails on the device, the Email icon turns grey if read, but it's still there. After 90 days it is possible to to set a shorter time) older emails will disappear.
• The old twitter client used to support multiple accounts, the new one in BB10 only supports a single twitter account, this is a real pain. Direct Messages (DMs) and mentions (@) appear in the hub, which is fine, but the actual twitter client only supports a single twitter account itself. Would be happy if the Hub just supported DMs and mentions from the active twitter account, but the actual twitter client should support multiple accounts and the user can select which twitter account to be active.

So only a single twitter account, no way to delete emails off the device without deleting them on the server, and no calendar synchronisation, but all is work.

Now the fun really starts

On the 30th of May I get an email/text from O2 saying my bill is £470 more than it is usually.

I contacted customer services and ask about the problem and am told that it's data charges, so I tell them my settings (Blackberry Unlimited tariff and APN set to mobile.o2.co.uk) and it's confirmed those are the correct settings, but the customer services agent has started a "Network Investigation" and I wont get anymore data charges.

I am not convinced, but hope that all will be good.

On the Saturday I get another email/text now saying that my bill is £580 over my normal bill.

Unfortunately it wasn't until Sunday that I managed to contact customer services again. This time I'm told that I should move to a normal data tariff and that the old Blackberry Unlimited tariff is very old and not available to new customers and I should move immediately (the tariff has a 750MB data limit, which I've exceeded in the first week). I refrain saying I will wait for the network investigation.

I then decide to do some of my own investigations and find that the new BB10 devices don't work how the old pre-BB10 devices work (the old BES and BIS connections went through a "hardwired" blackberry.net "private" APN that was embedded in the Blackberry software itself). The new devices (at least for a BIS - which is the Blackberry Internet Service) now do use the actual Internet data connection and don't have the cludgery that was the old style BIS connection. The devices have become completely device centric ...

However on some forum it's stated that setting the APN to wap.o2.co.uk works and as it's with the Blackberry Unlimited service, it's free. So I plug that into the Blackberry and lo and behold no more data charges.

I also phoned O2 support to check and they agree that setting will work.

I still have a massive data bill and there is an on-going network investigation.

Twitter to the rescue

I have had a few conversations with @O2 on twitter, who are very responsive to tweets and good for sorting technical and other issues and get into a discussion with the "web team" who DM me and ask for details of the problem, which I duly sent them. It seems they have a massive influence and today (Tuesday 4th of June) I get a call from O2.

Unfortunately I do have to move to a standard new tariff (that only comes with 750MB of data), but they are going to wipe the data charges (eventually £600+ +VAT).

As soon as the tariff is changed (should come into play tomorrow), it looks like I'll have to ask for a PAC code and move to a new network, one that does unlimited data.

I've been a loyal customer with O2 on this number since 2005 (and on another number - moved to GiffGaff a year ago, since 1984). It will be a shame to move, but unlimited Internet is unlimited Internet.

So long and thanks for all the fish as they say.

ARM the company that designs microprocessors and micro-controllers that are used in high-end smartphones down to dishwashers has announced a new range of graphics co-coprocessor with digital rights management (DRM) built-in.

ARM has been forging relationships with bodies to support its TrustedZone security implementations in its ARM cores, now it is extending this with DRM backed into its video processing hardware (Mali) and it has just announced the Mali-V500 which supports 1080p/60 encoding and can decode up to 120 frames per second with a resolution of 4K. This should make the chips appealing to video companies like Netflix who want modern hardware, but also want to appease Hollywood with native DRM support.

ARM have also released new CPU cores, the Cortex-A12 (mid-range smartphone, faster than current Cortex-A9 technology). ARM also boast the performance of the Cortex-A15 supersedes Intel's low power core technology, even though it's based on their new 3D transistor at 22nm.

Newer ARM chips will migrate to 20nm technologies and even 16/14nm designs and they say that will keep them ahead of Intel for the foreseeable future.