Articles & Comments by Christoffer Andersson
As an extension to the book, I here have
collected some articles and other pieces that I beleive add value. The content in some of
the older articles is also used in the book, while the newer ones contain things that I
would have wanted to include in the book if I had written it today. It is not unlikely
that some of that will be included in later revisions.
With many networks available from different operators, it is key that
applications can run without having to worry too much about the underlying
technology. Still, it becomes increasingly important for developers to be
able to access the nice features of the networks, like charging and
positioning, via interfaces. Application Enablers provide this capability.
In these days where many of us are waiting for the mobile Internet to really take off, it is tempting to take a look to our friends in Japan and see what they have done to be successful over there. Some say that they have done everything right and we just need some iMode over here as well to succeed. Others counter that Japan is a totally different market and that not much at all is applicatible in the rest of the world...
3GPP, 3GPP2, Parlay, WAP Forum and so on, there are many
standardization bodies and it is not always easy to find the information you need in their
libraries. Here I have assembled some of the most commonly used standardization sources
and explained how to navigate through it. After all, when you know a bit about a
technology and it is time to get serious, the standards is an essential reference.
A small piece written by a journalist that found great interest in
the book. Ericsson liked it and published it on their external site. There has been lots
of publicity coming from this and one of the reasons that the hosts of the June 2001
3GPP meeting used the book for their proceedings.
These days it is very popular to bash WAP
and doom it to eternal humiliation and demise. On top of that, there are other
buzzwords coming up, like GPRS and 3G, so why should anyone need WAP anymore. This article
gives some reasons why WAP will remain important and it also shows the migration of
mark-up languages in the next generation of WAP.
- Article: Positioning, Where you want to be
Everyone seems to agree that location based
applications will be hugely important in the future. With the E-911 requirements in the US
even more focus has been put on the area, and many companies are betting big on
positioning. This article aims to clarify some of the issues around positioning and also
explains the most common positioning technologies. Also, check out this guide
to the MPC API.
Since the traditional 2G cellular/mobile
networks are circuit-switched, the packet-switching feature of GPRS is hugely important.
For applications developers this might be an even bigger change than the upcoming 3G
networks. This is a small introduction to GPRS and should be a good start for anyone
interested in packet switched mobile networks.
GRPS and 3G Wireless App's