WirelessMoves

Wow, I am impressed, the Carnival of the Mobilists is now in its 50th edition. Incredible! So for a summary of the best posts of the mobile blogsphere of the last week, head over to Mobhappy for this weeks edition. Have fun!

I think I am renowned for being open to try out new things, especially if they’ve got anything to do with wireless. This time I have even had a practical application in mind. The scenario: Multi tenant flat in Paris, only one phone line, constant search for the phone because somebody has put it where it doesn’t belong, always ending up with the wrong person first when I call in, nightmare each time the phone bill comes in to figure out who made which call, exorbitant prices of the local incumbent, etc. I guess you get the idea. The solution is simple, or so I thought: Wifi VoIP phones have been around for a year or so now. So I figured they would be stable enough by now to be usable over the local DSL line and Wifi Access point as well as fool proof so even a non technical person can just use it like an ordinary phone. Well, so I thought and happily set out to get a Wifi SIP VoIP phone. Reality was somewhat disillusioning.

The Phone and my "Out of the Box" Experience

The market for VoIP phones is still fairly small and there are only a couple of options. As a wireless enthusiast I opted for the UTStarcom F1000G, as its predecessor has been around for quite a while now so it should be fairly stable. The F1000G is a true Wifi phone with an 802.11g chip inside and an embedded web server so the phone is easy to configure once it’s connected to a Wireless LAN access point. I ordered the phone from Sipgate which offers a local number and a prepaid account for free together with the phone. The phone itself is not subsidized and available at Sipgate and other companies for around 130 euros. The phone came pre-configured with only the Wireless LAN encryption key to be configured by the user. Sounds simple, no? Well, it would be if the online description or the printed manual would have given a hint on the password to be typed in to be able to enter the menu via the phone’s screen. Nothing, nada, zip… O.k., well, after trying a dozen standard passwords like 0000, 1234, 12345, etc., I decided to deactivate encryption on my Wireless LAN for a minute to be able to get to the built in Web Server from my PC. Access to the configuration pages, however, is also password protected. Again, the online description and the manual mention nothing about it… But, there’s Google and a quick search revealed the standard password for the administrator account: "psw". This trick worked and I was finally able to set the WPA encryption password and the phone’s password so I can access the security features directly from the phone. Not bad for 45 minutes, except that the whole process should have taken 2 minutes…

Interoperability

A Wifi phone without a WLAN access point and a high speed Internet connection is like a plain old phone without a phone socket to plug it in. The difference between a phone socket and a WLAN access point is the small little fact that one of them has been around for decades and pretty much every phone (country specific…) fits into pretty much every phone socket. I had to find out that the same is not true with Wifi phones. For some reason beyond my understanding, my F1000G phone and Netgear Wireles LAN Access point with built in DSL modem (DG844GB) do not really like each other very much. Voice quality was lousy and every now and then I even lost the speech path completely, especially when going into another room. Not even a software update of the phone and access point resolved the problem. I just don’t get it. Two components, mass produced, millions of them sold and they just don’t want to work together!? I really don’t get it. In the meantime, I’ve tried the Netgear AP with another VoIP product with pretty much the same result. So the phone is not to blame for this one. Anyway, help was near as for occasions like this I have a second WLAN access point with built in DSL modem, a Siemens Gigaset SE515 DSL. So I switched off the Netgear AP and put this on in place. Incredible, the voice quality suddenly became much better and no speech path losses in the next room. Eureka! … and shame on Netgear!!!

Over the Long Run

Telephony over IP is a tough business. Not only do packets have to be sent and received at precise intervals, the equipment and software must be rock solid and not stop working over night. After all, that’s just how ordinary phones act. Unfortunately, not the F1000G with the Siemens Access point. Once a day (or night) or so, the phone suddenly looses contact with the network and refuses to do anything about it. There’s no problem with the Access Point in most cases as the notebook just works fine over the wireless connection. Sometimes the access point dies, too and the whole setup has to be rebooted. Totally unacceptable!

Voice Quality

Voice quality even during long phone calls of 20 minutes was consistently o.k. but far away from the voice quality of a standard phone. Also, other activities on the DSL line while on a call have a negative impact on voice quality. Uploads of eMails with large attachments have a very negative impact on the voice quality in the uplink, while downloading of large files pretty much destroys the experience in downlink direction. Traffic shaping is the magic word, but both of my AP’s do not support this. Simple Web surfing over my 1 MBit/s DSL line on the other hand while being on the call had no audible effects as far as I could tell.

Summary

Well, that phone goes back into it’s box and to the shop. It’s good to see SIP working in a true Wifi phone, it’s good as a proof of concept. For everyday use, however, it is much too instable and until UTStarcom has figured out a way to keep the phone communicating with the network permanently and how to improve the voice quality, it’s a no go for me.

So in the end, I am still stuck with my phone problem in Paris. But I am adventurous, so I gave the Siemens Gigaset C450 IP a try, a DECT phone with a SIP adapter box. SIP terminates in the box instead of the phone which from a technical point of view is inferior to a true Wifi SIP phone. But maybe it’s more stable. But that’s for another blog entry. To be continued…

Walking through the countryside today I reflected on current EDGE and UMTS deployments and what to expect in the future if you are living outside of towns or cities. While UMTS just made a big jump from 384 kbit/s to 1.8 or 3.6 MBit/s with HSDPA, EDGE is pretty much the last push GSM/GPRS networks will see in terms bandwidth. Sure, standardization work is ongoing for multicarrier EDGE which might once again one day increase througput in old GPRS/EDGE/EDGE+(?) networks. But the increase will be quite modest compared to HSDPA and future 4G technology. It will come to late.

On the other hand it’s quite clear that bandwidth requirements even of "ordinary" users is increasing quickly. EDGE’s 200 kbit/s is still quite o.k. today for many things but I wonder if this will still be the case in, say, 3 or 4 years from now. Probably not with websites increasing their graphics and video content from month to month. It would be nice to see UMTS/HSDPA deployed even in remote areas by then but I wouldn’t count on it. WiMAX might be deployed in such regions but the big question is of whether travellers will be able to use such networks which will be potentially local in nature for a fair price?

But then, maybe I shouldn’t give up on nationwide 3G coverage as GSM licenses will run out in 2012 in many countires. That’s only 6 years away from now. By then, most mobiles will be 2G/3G dual mode. So maybe we’ll see some GSM network replacement with UMTS for the simple reason that there is no price difference for replacing and aging GSM BTS with a new GSM BTS or a new UMTS BTS. UMTS in the 900 MHz band would surely help in rural areas. Let’s hope regulators and operators in Europe and elsewhere get the idea.

For all of you who were not able to attend the Nokia Open Studio last month in New York here is a link (via N80 geek) to the video that was recorded of the event. A must see for all mobile enthusiasts to get behind the scenes and find out more about what Nokia’s thinking about mobility, mobile phones (aka multimedia computers), convergence, multimedia and the future. And besides, it was a cool show.

So far I always thought that high 3G license costs like the 50 billion euros that were spent in Germany would inhibit growth, deployment and use of 3G networks and services. I am not so sure anymore as according to the ITU, 3G licenses were given out for free in Finland with only a modest administration fee of 1000 euros per 25 kHz (per year I assume according to this article).

Even if you consider the difference in population (roughly 80 million Germans vs. roughly 4.3 million Finns), 0.2 million euros for 5 MHz a year is still next to nothing. While Germany has a widespread deployment of 3G networks in 2006, Finland seems to be far behind with only a few major cities covered (take a look here at the GSMA coverage maps). Also, there doesn’t seem to be a big difference in 3G pricing. Only recently, Finish carriers seem to have introduced interesting data tariffs which let you surf the web for 20 euros a month with a bandwidth limited to 128 kbit/s. Full speed access is available for 40 euros a month. Similar offers are available in other countries as well these days where operators have paid a lot more for the licenses.

So to me it looks almost the other way around from what I have initially thought if you only look at these two examples. The more expensive the licenses, the more eager companies seem to be to deploy the technology. After all, if you have spent more money for the licenses then what is necessary for buying and deploying a network it doesn’t seem to hurt that much anymore.

Two more examples to make the confusion perfect:

• Japan: 3G licenses were given out for free as well according to this Gartner article. But contrary to Finland, 3G is a major hit in Japan these days.
• France: Only two companies have deployed a UMTS network, with a third operator slowly starting in 2006. Cost for the licenses were 4.5 billion euros per operator. 3G coverage, however, is still limited to major cities in France (see the link to the map above again). Cities below 100.000 inhabitants usually don’t have UMTS coverage by the end of 2006. So in this country, 3G coverage is quite limited despite very high licensing costs.

Strange, though, that end user prices seem to be pretty much on the same level, no matter how much operators had to spend on licenses. Anyone’s got an explanation for this?

Summary: I think it’s pretty obvious that licensing fees do not have the same impact in each country as far as coverage and end user pricing is concerned. There seem to be other factors which are different in each country which have a much more profound impact.

This is the third podcast in my series about how wireless operators in different countries around the world offer the wireless Internet to their users. This time I am focusing on Finland, or Nokialand as some people call it, with Nicolas Fogelhom, whom I guess many of you know from his blog about-nokia.com.

From the podcast:

• The N70 radio is his number one application
• Camera and mobile phone browsers as driver for the mobile Internet
• Mobile network operators in Finland: TeliaSonera, DNA and Elisa
• Unlimited volume data plans, limited bandwidth from Elisa. For those of you speaking Finish, take a look here for further information.
• Competition on the Finish wireless market.
• GSM/UMTS coverage in Finland. Also take a look here for GSMA coverage maps.
• Percentage of UMTS phones and current phone subsidies.

The Podcast, 20min, MP3, 14MB

The previous podcasts in this series:

• Operator landscape in Spain with Rudy de Waele
• Operator landscape in the U.S. with Debi Jones

Recently, T-Mobile USA has acquired the necessary frequencies to deploy their 3G UMTS/HSDPA network in the U.S. The cost for the licenses amounts to about 3.3 BILLION euros. Compare this to the costs for hardware and network deployment of about 2 billion euros. While thousands of engineers in companies have worked to build the hardware and software for the networks, less money goes to them than to the government which hasn’t really done a lot to earn that money. Or has it!? Please enlighten me… I know, it was an auction, but I just find that imbalance somewhat strange. Seen from a different point of view, over half of the money they will charge for network access and services later on do not go to the people who’ve worked on the technology but to a third party.

P.S.: I know the imbalance is much bigger in other countries, like for example in Germany where UMTS licenses have been bought for 12 BILLION euros per operator at the time…

O.k., o.k., so the hype around the Nokia Open Studio in New York last week has calmed down a bit. However, I still keep thinking about all those new possibilites with the Nokia N95’s built in GPS receiver module and navigation software will have. So here’s my killer application for it:

Regularly, just like two days ago again, I am talking five minutes on the phone to tell people where I am at the moment and where they can find me. Sometimes it’s complicated because I don’t really know where I am exactly and sometimes the other person does not know his/her way around in the city. Three calls and half an hour later we usually meet. No more with the N95! To tell somebody where you are, you just need to enter the navigation application and send your current location via SMS to the other party who hopefully also has an N95 in his/her hand. The SMS is usually received instantly and the navigation application can take my coordinates right out of the SMS. Two or three clicks later and the software calculates the shortest way to me. It’s already in the package. Take a look at this video which shows the mapping software on the N95.

There’s one thing that is critical for the scenario above and I hope they’ve done it right:

• The startup time of the GPS module should be less than 20 seconds to the first fix.

Other potential killer applications which I would wish for:

• Put location data into taken images
• Plan a trip on the PC, download trip info to the N95 and then navigate with it
• Take a picture, geodate it, upload to Flickr or another site for others to see in their N95 mapping application.
• … much more once I get such a phone into my hands to try it out for myself.

The Carnival of the Mobilists is back for another great weekly show over at Helen Keegan’s site. So for the best of last weeks writing on mobile topics, head over and enjoy a bunch of links to great articles and of course Helen’s blog itself!

While doing some research on which frequency bands mobile WiMAX will be specified for I found this interesting website from Intel in which they give some information about the upcoming Rosedale 2 chip. They say that Centrino notebooks with the chipset will support both Wifi and WiMAX.

Supported WiMAX Frequency Bands

A link to this .pdf document gives further info on the bands supported by the chip. Looks like it will cover the most important band for the U.S., which is 2.5 GHz and also the 3.5 GHz band which will be used in Europe and Latin America. Good preconditions for mobile roaming. I wonder which bands will be used in Asia!? Also, the pdf document gives a good introduction to the WiMAX network architecture and how Intel plans to integrate WiMAX into notebooks.

Multiple Wireless Technologies with one SIM card

Also, take a closer look at the figures at the end of the document. Looks like Intel would like to see interfaces for authentication and billing into 3GPP2 networks (i.e. current EVDO networks). This would make quite a lot of sense for carriers like Sprint who will deploy WiMAX networks along their already existing EVDO networks. Such an interface would be required for what Intel calls "smart card re-use […] for support of seamless authentication while roaming across technologies" which Intel says "is under investigation". The wording suggests that they are not sure about this detail yet.