Poziv na predavanje: Prof. Andreas J. Kassler "On Power Efficient and Robust Virtual Network Functions Placement for 5G Networks"

Sadržaj predavanja:

Next generation 5G networks will rely on virtualized Data Centers (vDC) to host virtualized network functions on commodity servers. Such Network Functions Virtualization (NFV) will lead to significant savings in terms of infrastructure cost and reduced management complexity. However, green strategies for networking and computing inside data centers, such as server consolidation or energy-aware routing, should not negatively impact the quality and service level agreements expected from network operators. In this talk, we study how robust strategies that place virtual network functions (VNF) inside vDC impact the energy savings and the protection level against resource demand variations. We propose novel optimization models that allow to minimize the energy of the compute and network infrastructure which is hosting a set of service chains that implement the VNFs. The model explicitly provides for robustness to unknown or imprecisely formulated resource demand variations, powers down unused routers, switch ports and compute servers, and calculates the energy optimal VNF placement and network embedding also considering latency constraints on the service chains. Our experiments were carried out using the virtualized Evolved Packet Core (vEPC).

Životopis predavača:

Dr. Andreas Kassler received his MSc degree in Mathematics/Computer Science from
Augsburg University, Germany in 1995 and his PhD degree in Computer Science from
University of Ulm, Germany, in 2002. Currently, he is employed as Full Professor with
the Department of Mathematics and Computer Science at Karlstad University in Sweden.
Before joining Karlstad University, he was Assistant Professor at the School of Computer
Engineering, Nanyang Technological University, Singapore, between 2003 and 2004. Dr.
Kassler is (co-)author of more than 100 peer reviewed books, journal and conference
articles. He served as a guest editor of a feature topic in EURASIP Wireless
Communications and Networking Journal, and is on the editorial boards of several
international journals. Dr. Andreas J. Kassler is a senior member of IEEE Computer
Society and IEEE Communications.