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  • Study location Gamma, Västerås
Date
  • 2022-11-22 13:15

The public defense of Daniel Brahneborg's doctoral thesis in Computer Science

The public defense of Daniel Brahneborg's doctoral thesis i "Improving the efficiency and reliability of text messaging gateways" will take place at Mälardalen University, room Gamma (Västerås Campus) at 13:15 on 22nd November 2022.

Titel: "Improving the efficiency and reliability of text messaging gateways"

The faculty examiner is Associate Professor Kristina Kunert, UMU, Sweden.
The examining committee consists of Assoc. Professor Romina Spalazzese, MAU, Sweden; Associate Professor Tolga Ovatman, Istanbul Technical University, Turkey and Professor Ana Cavalli, Institut national des Telecommunications, France.


Reserve is Associate Professor Koteshwar Chirumalla, MDU, Sweden.

The doctoral thesis has serial number 364.

Abstract

As individuals, we can choose between a plethora of systems for sending short messages.
For messages sent from companies to their customers, such as meeting reminders,
tickets, and authentication codes, traditional text messages are still commonly
used as this is proven technology which works on all mobile phones. The companies
usually send these messages via SMS brokers, who in turn forward them to each recipient’s
mobile operator. Because the brokers charge the senders per message, they want
to be able to handle a large number of messages for this traffic to be profitable. They
also want to be sure the senders are charged the correct amount. Senders, on their part,
want to be able to trust that their messages will reach the customers.

One of the software products that handle this kind of data traffic, which has some
unusual features and quality requirements, is the Enterprise Messaging Gateway
(EMG) from Braxo AB. In this thesis Daniel Brahneborg, in a collaboration between
Mälardalen University and Braxo, has built on current research to find better ways
to meet the sometimes conflicting requirements of both good performance and high
reliability. This has resulted in a new algorithm for finding deviations in response
times, which can vary from a few milliseconds to several seconds and still be
considered normal. It has also provided a more efficient technique to keep data safe
when using geographically dispersed computers. A thorough analysis of EMG’s
architecture finally showed how its balance management could be changed to handle
the steadily increasing traffic volumes of both larger and smaller SMS brokers.

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