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Keynote Talks

Talk 1:

Alexander Sayenko

Talk Title: Recent multi-carrier and HetNet advances and trends in 3GPP standardization

During the past years in 3GPP standardization, both the HSPA and LTE technologies have undergone noticeable changes resulting in a number of important enhancements catering for better flexibility and improved performance. One of the main improvements introduced in HSPA+/LTE is the possibility to aggregate several carriers, thus allowing operator’s to adapt flexibly to the available spectrum and take full benefit of multiple carriers that may reside in one or several bands. At the same time, along with a need to cope with challenges caused by the scattered spectrum, operators have been facing more and more a need to handle properly an environment comprising of base stations with different capabilities and functionality. Without limiting the scope specifically to macro vs. micro vs. pico base stations, 3GPP has been addressing these issues under the HetNet study and work items, both on the HSPA and LTE sides. In addition to that, operators are seeking for an opportunity to combine carrier aggregation solutions with the HetNet environment to take full advantage of the resulting architecture. 

In this presentation, we will provide a brief overview of the existing multi-carrier solutions already adopted for HSPA and LTE starting from Rel-8. Then, we will delve into the details of the past and ongoing work the 3GPP has been doing with regards to the HetNet environment. Finally, we will conclude with the HSPA Rel-11 Multiflow and ongoing LTE Rel-12 dual-cell connectivity topics, elaborating further on how multi-carrier solutions can be combined with HetNet. By not limiting our scope specifically to HSPA and LTE, we present how both technologies evolve over time. This approach is relevant because at times HSPA advances outpace the development of LTE. 

About Alexander Sayenko

Alexander Sayenko obtained the BSc degree from the Kharkov State University of RadioElectronics in 2001, Ukraine. In 2002, he received the MSc degree from the University of Jyväskylä, Finland. After enrolling to the PhD program, he focused on scheduling, the QoS and network management mechanisms for the core wired networks. He is an author of the WRR and DRR scheduler for the NS-2 simulator, as well as a maintainer of the WFQ queuing discipline. Besides, he contributed implementations of several signaling protocols, such as COPS and aggregated RSVP. While working on the signaling solutions, he took part in the IETF NSIS and TS WGs. In 2005, he finished his PhD thesis on adaptive scheduling solutions for the QoS networks. Starting from 2007, he worked for Nokia Research Center as a senior research engineer. His responsibility is terminal architectures and the resource and power management solutions for mobile terminals. In parallel, he took part in the development of the 802.16 module for the NS-2 simulator, as well as 802.16 performance evaluation and its further development. In 2008, he joined Nokia Siemens Network as a senior specialist, where he continued to work on the research and standardization of the IEEE 802.16 WiMAX technology. Starting from 2009, his responsibility area sharpened towards the standardization activities in 3GPP, where he has been representing Nokia Siemens Network in RAN2 working group. He is the 3GPP rapporteur of the DL Multiflow WI and a few 3GPP specifications, TS 25.317 and TS 25.321. His personal contribution to the development and standardization of advanced wireless features is the specification work done in RAN2 and RAN3 for Rel-11 DL Multiflow and UL MIMO.

Alexander Sayenko has published more than 20 scientific papers  in the areas of network management, QoS, and resource management in the wired and wireless networks, and has a number of internationally filed patents.

Talk 2:

Matthias Hollick

Talk Title: On The Verge Of Extinction: Privacy in Mobile and Participatory Sensing Systems

Mobile and participatory sensing systems build on user participation and mobile phones as sensing platforms. They allow to instrument our environment as well as our everyday life in unprecedented resolution, thus giving us environmental and personal "big data". Analysis of this data opens up a number of opportunities and drives the development of new applications. Yet, at the same time, the privacy of the user can be considered as on the verge of extinction. 

The keynote gives a review of novel participatory sensing applications and discusses the associated privacy risks, which are elevated compared to existing privacy threats in the Internet. Selected approaches to keep privacy "alive" by protecting the users' context information are then introduced and discussed.

About Matthias Hollick

Prof. Dr.-Ing. Matthias Hollick is a full professor of Computer Science at Technische Universität Darmstadt, Germany. Since 2009, he is heading the Secure Mobile Networking Lab (SEEMOO), which is affiliated with the Center for Advanced Security Research Darmstadt (CASED), one of Europe's foremost IT-security research institutes. After receiving his Ph.D. degree from the TU Darmstadt in 2004, Dr. Hollick has been researching and teaching at TU Darmstadt, the University of Illinois at Urbana-Champaign (UIUC), and the Universidad Carlos III de Madrid (UC3M). In 2005, for his research, he has received the Adolf-Messer Foundation award. His research focus is on robust, secure and privacy-preserving as well as quality-of-service-aware communication in mobile and wireless networks.

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