Paper accepted - PIMRC in Athens, here we come!

Our paper, "Remote Service Usage through SIP with Multimedia Access as an Use Case", was accepted at the 18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) in Athens, Greece. The conference takes place 3rd to 7th September in Athens Hilton.


Abstract:
"The IP Multimedia Subsystem is under deployment, as an IP-based service control and access infrastructure, but how it interconnects with residential appliances is currently unclear. With IMS access for the residential appliances they can be used as both service consumers and service providers. In this paper we present a protocol which allows residential services to be remotely invoked, through the IMS, and consumed in a different network, along with a prototype implementation and early results. With our protocol services of two distinct service protocol systems can cooperate."

We started the design work early in the autumn, 2006, and later we developed the prototype during the autumn and winter. In November, 2006 we did an integration test in Kista and at the end of January, 2007 we finally had our prototype working. Early March, 2007 the prototype was demonstrated to Ericsson in Kista. Due to the inherent nature of prototype, we needed three attempts before the prototype worked as expected.

See the AML Publications website for the publication when it is available (approximately 16th June), or in the conference proceedings when available.

Disney World and TridentCom 2007

On 19. May Andreas will travel to Disney World, Orlando, FL., USA to attend the TridentCom 2007 conference and present a paper titled "Migration of Enterprise VoIP/SIP Solutions towards IMS".

Server farm moved

Because our servers are quite noisy (Dell SC1435, do you copy?) we have moved it to its own server room now. Currently we are working on configuring them to work correctly together, and also reconfigure our older infrastructure to take advantage of them.

Will probably write more about what we've got in our infrastructure at a later time...

The agder mobility lab server farms (?!)

Server farms (?). well, not really. But we are on our way! We started off with a Dell 4210 (42U) rack cabinet (we are now very attached to rack as we personally carried and assembled it!) and mounted a few servers. A couple of Dell power edge sc1435 servers will be sitting beside not-so-good looking self assembled (yes, by us!) 2U and 3U servers. The plan is to build a extensive network environment including gateway/firewall, openIMS testbed, AAA server, file server, Asterisk testbed etc etc. The wiring looks a bit unprofessional now, but works nonetheless. Once the initial setup had been done, the tower will be moved to a server room near by, contrary to our initial plan of setting it up in the lab (a bit too noisy). More to come as we get cracking on the hapless servers...

Search & destroy in Aachen: Prototype finally working!

After the interoperability testing at Ericsson headquarters at Stockholm, Sweden during the end of November last year we have been busy killing all bugs discovered during the last round of testing. Now, late January, there was still one last "show stopping issue" left. To be able to work together with Ericsson in Aachen, where they had set up the testing environment, Andreas traveled there on Wednesday, 24th of January.

Thursday morning the root cause was found, and it was just a misconfiguration of a NAT-binding due to a misunderstanding of the product by the developer who had setup the testbed. After we fixed that NAT-binding the system worked as expected, finally, which was a great relief. Later we worked on more testing and co-located some of the functionality to reduce the amount of computers necessary to demonstrate the system. We started with 5 computers and ended up with 3 computers and 1 mobile phone.

The Burning Crusade starts ... and I am on a ferry to Danmark

On Tuesday, Jan. 17 at 00:01 the "Dark Portal" was opened while Andreas and I were on a ferry to Danmark. Aarggghhh! My sons will be level 70 by the time I come back ....

Writing a book with our friends from Mobile Devices Lab @ AAU

Andreas and Frank visited Frank Fitzek's team at the Mobile Devices Lab at Aalborg University (Danmark). While storm "Kyrill" was causing havoc in Europe, we sat safely and continued work on our common book on "Mobile Phone Programming and its Application to Wireless Networking" (Springer). As soon as the flyer is available I'll link it here.