FON on Femtos

Here's an interesting press release from FON, the company behind the FON hotspots that help you share your Wi-Fi Internet connection at home in exchange for free access around the world when you encounter another FON hotspot. In their quest to increase the number of FON hotspots, they have in the past already partnered with DSL providers in France and the UK to include their software in their home gateways. Now, FON has made an additional partnership with 3G femtocell maker Ubiquysis.

With this deal, future femtocells from Ubiquisys can also include the FON software so a home gateway can be used to enhance 3G coverage, to provide private Wi-Fi connectivity at home or in an office and can broadcast a public Wi-Fi signal. I think this setup might also make a lot of sense in hotels, airports and shopping areas and other places with lots of people who could benefit from better 3G coverage or Wi-Fi.

Now FON and Ubiquysis probably have to find out how to sell the concept to a fixed line / wireless network operator. I imagine that the incentive to include the FON software for a mobile network operator is similar as for the fixed line / wireless operators in France and UK. I'd say it is likely that they are splitting the revenue.

An interesting proposition that rises and falls with the popularity of Femtos. A winning cooperation? What do you think?

3 Like Home Not Abandoned in Austria!

After 3 UK has re-introduced roaming charges this summer, it is refreshing to see that 3 Austria still sticks to the 3 Like Home program, i.e. there are no roaming charges for voice and data in other 3 networks. I recently tested this in Italy with an Austrian 3 SIM card for a week and except for a few PDP context activation failures (roaming link down for a couple of minutes every now and then?) things worked well and I was charged the same rate as in Austria. Well done, 3 Austria, it's really great not having to change SIM cards at every border!

HSPA+ No Substiture for LTE

A follow up to this earlier post on LTE and capacity: Every now and then I see a debate of whether it is better to upgrade from HSPA to HSPA+ or to go to LTE. From a capacity point of view I think it's not an "or" decision, it's rather an "and" decision.

I don't see a reason why operators using LTE as a capacity extension in the 2.6 GHz band should not also upgrade to HSPA+ (before, after or at the same time) to make the best out of of the 2.1 GHz spectrum as well and to support as many HSPA users as possible. True, not all mobile devices will be HSPA+ capable for quite some time, but HSPA+ is backwards compatible thus taking everyone forward.

Especially once current equipment is end of life and replaced by multi-technology and multi-band base stations, potentially with new MIMO antennas that can be used simultaneously in the 2.1 and 2.6 GHz band, it seems rather a natural thing to do to me.

As always, thoughts are welcome.

VOLGA Stage 3 Specification Published

If you've been following my blog for a while you've probably noticed my support for Voice over LTE via GAN, or VOLGA for short. In case not and you are interested here's a link to a short intro and here a link to a whitepaper which I've recently written on the subject. It looks like the VOLGA forum has not been idle over summer and has continued working on the final stage 3 specification that contains all the nitty gritty details on messages, information elements, etc. Now in September 2009, the final version has been published which means all documents are together now to implement VOLGA. For the details, see here. Well done, I am looking forward to seeing the first implementations!

UMTS 900 Would Be Great For The Highlands

A random thought today: UMTS 900, the 3G variant running in the 900 MHz band so far mostly used for GSM is already used in a couple of countries like Finland and France to get 3G coverage to rural areas. Mobile devices for this frequency like from Nokia are also on the market already. The big difficulty with UMTS 900 is to find enough space in the narrow 900 MHz band for the 5 MHz carriers. However, I guess that is mostly an issue in cities and not so much for sparsely populated areas, like for example the Scottish highlands, where only a few GSM carriers are in active use and base stations are spaced 7 km apart or even more.

I know, the UK has so far not allowed the use of 3G in the 900 MHz band due to open market questions, but from a user's point of view I think it would be a great thing. In the mid and long term, however, I think the 900 MHz band will be opened up for other technologies, as even in cities, 3G and also LTE have/will have the big disadvantage compared to GSM of a much inferior in-house coverage. Going from a voice centric to an IP centric wireless network architecture, it seems like a natural evolution of things.

LTE as an HSPA Capacity Extension

Thought of the day: I keep hearing that LTE is great because you can go beyond the capacity of HSPA(+). Well, from an air interface perspective (Bits/s/Hz), that's going to be tough to achieve as HSPA(+) is going in the same direction capacity wise given the same amount of spectrum as LTE.

BUT, and that's how I haven't thought about it yet, LTE can be used in the new 2.6 GHz band, something for which HSPA is not specified and current base stations and many antennas are also not designed for. So once you get to the limit of your HSPA capacitiy, i.e. once you have used all the assigned spectrum in the 2.1 GHz band, you can use LTE to increase capacity with an overlay 2.6 GHz deployment. Where a lot of capacity is needed, range, which is going to decrease with the higher frequency, is also not a big issue.

Maybe you are lucky as an operator at this point and your 2G/3G equipment at this location is end of life and needs to be replaced at the time you run out of capacity anyway. It might then be possible to replace the old base station with a multi-technology, multi-band base station. If you are even luckier you manage to get a backhaul fiber to the site as we are talking triple digit MBit/s that have to be transported.

And at the same time you give your customers an incentive to upgrade to LTE: Higher speeds for them as they don't have to share the network with the masses anymore. At least for a while.

No EDGE in the UK

One thing that surprises me a bit about the UK wireless market is that despite being one of the most competitive in Europe, non of the mobile network operators have Vodafone does not have deployed EDGE in their its GSM/GPRS network. Some might argue that there is no necessity for it as 3G is the playground for mobile broadband these days. Not so fast I say though.

Take bigger cities for example like London. Millions of people must be out and about with their Blackberries, most of them still on GPRS/EDGE and not on 3G. They would surely benefit from an EDGE upgrade. Also, it would significantly increase capacity of the GPRS network as data is transferred more efficiently over the air. But capacity wise it doesn't seem necessary, as I haven't heard complains about slow Blackberry e-mail delivery in London yet.

Personally, I also often lock down my N95 to GSM only as web browsing with Opera Mini is very bandwidth efficient, it increases battery lifetime significantly and minimizes times the mobile looses coverage, e.g. when entering buildings and while I'm traveling by train. I also noticed no slowdowns in GPRS in London, which means that the current Vodafone GSM network capacity seems to cope well with 2G data traffic.

The Scottish highlands are the other extreme. Except in a few cities, there's no 3G coverage, and GSM base stations are spaced wide apart. That makes it a difficult terrain for broadband Internet. Again, Opera Mini performed very well on the GPRS only network but I had really wished for some EDGE so web browsing would have been possible as well.

But for the moment, it seems its not to be had. I wonder if integrated GSM/UTMS/LTE base station with a common backhaul link might change this in the future?

Internet Access on the Flying Scotsman

Despite its name, the Flying Scotsman is not a plane but actually a train with lots of history, running daily between London and Edinburgh. From a wireless perspective, a recent trip with it was interesting because free Internet access is offered to all passengers during the ride. A bit of background research revealed that the service has been realized together with Swedish company Icomera and some very high level information about it can be found here.

It looks like for most of the trip, a satellite based connection is used to backhaul the data. However, compared to the Internet access on Thalys trains between France, Belgium, The Netherlands and Germany, the connection is very slow and I could not get more than a couple of kbit/s over the link at any time. Round trip times varied greatly between a couple of hundred milliseconds to several seconds. Yes, several seconds (!), no idea where those packets went in the meantime…

It seems the connection is pretty much congested all the time, which might be because it is free for all passengers, due to a limited link capacity or a combination of both. So when web browsing, it usually takes quite some time for pages to come up. After a while I adopted a "better than nothing" approch but I wonder if some people would rather be willing to pay extra for the privilege to be "fully" connected and to shorten the wait!?

It would be interesting to know what kind of satellite system they use as I didn't see any dome like structures on top of the train such as those on the Thalys. Also, I wonder if they have similar uplink / downlink capacity on the link. No way of telling from the outside.

To summarize I'd say I got the work done I wanted to do during the trip, which was mainly e-mail, IM and a little bit of research on the web. I'd be quite unhappy to be stuck with such a slow connection for more than a couple of hours but for the train ride it was all right. That doesn't mean, though, that National Express East Coast should sit on their hands and do nothing, the service could be much improved as the Thalys example shows.

Mobile Application Stores Conference At CTIA With A Great Lineup of Speakers

Ajit Jaokar, friend and co-presenter of our LTE course at the University of Oxford has a couple of interesting events coming up over the next couple of months. Needless to say that I am more than happy to help spreading the word:

At the upcoming CTIA, Ajit's company Futuretext is producer of the Mobile Application Stores, Strategy and Deployment conference and is proud to announce an all-star speaker lineup for this unique event. Mobile Application Stores is a partner seminar of International CTIA WIRELESS I.T. and Entertainment October 8th in San Diego.

Mobile Application Stores is the only conference to focus exclusively on the business of mobile applications and will focus on the tremendous opportunities in the mobile apps stores ecosystem. The event is designed to give a complete understanding of how to capitalize on this dynamic market.

Featured speakers for the event include:

  • Dr. Jin-Sung Choi Ph.D, Senior Vice President, Head MC Global
  • Product Planning Team, LG Electronics Korea
  • George Linardos Vice President, Product Management, Media, Nokia
  • Ilja Laurs Founder & CEO, GetJar.
  • Tim Haysom, Chief Marketing Officer,OMTP
  • Mike Merril, CEO-Smart Phone Technologies
  • Ajit Jaokar, President-futuretext
  • Chetan Sharma, CEO, Chetan Sharma Consulting
  • Jouko Ahvenainen, Founder, Grow VC International
  • William Volk, CEO, PlayScreen
  • Sena Gbeckor-Kove, Chief Technology Officer, imKon

The timing is perfect for an event like this. The Apple Appstore announced its billionth download in less that 9 months after opening and the recent launch of LG’’s Applications Store and Windows Marketplace for Mobile as well as Android and the Blackberry App World are making tremendous impact in the mobile marketplace.

Mobile Application Stores is co-located with the largest wireless event in the U.S., International CTIA Wireless I.T. and Entertainment. Registration is only $295 at http://www.mobileappevent.com/

About Mobile Application Stores: The Mobile Application Stores event is produced by futuretext, a London based research, consulting and publishing company. For additional information, please contact Larry Lockhart at NextVision Media at 727-388-9849 or Larry@nextvisionmedia.com or Ajit Jaokar Ajit.jaokar at futuretext.com. The web site again for registration is: http://www.mobileappevent.com/

Still no Cellular in the London Tube

I really like London and do come here often, but as soon as I go down an escalator to take the tube, my cellular signal fades away and I feel like my hands are bound until I surface again at the other end of the trip.

That feeling is of course heightened by having good underground coverage in most other cities I usually travel to and I keep wondering why on earth London, capital of a nation that has fierce competition amongst network operators and good network coverage hasn't come around on this issue yet!?

Even in mobile markets that aren't known for their competitive environment such as France, the metro is fully covered, even between the underground stations. Worries about terrorists using the network for their purposes are in my opinion also no good reason for not going forward. Previous attacks unfortunately worked despite no cellular network being present to trigger anything.

Also, arguments that it's difficult to find space for cables also don't count as Transport of London has just finished deploying their underground Tetra network. Signaling equipment being sensitive to GSM or UMTS? Unlikely if TETRA (probably on 450 MHz) doesn't confuse the equipment…

And finally to those who argue that people using the phone create disturb others, take a Eurostar to Paris and convince yourself of the opposite. Most people in the metro use their phones for texting, emailing and web browsing as it's just too noisy for lengthy phone calls. So no worries here either.

So please, everyone involved, give yourself a push to finally do it and join the rest of the developed world!