Browsing by Author "Kassler, Andreas"
Now showing items 1-16 of 16
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A fast robust optimization-based heuristic for the deployment of green virtual network functions
(2017-10-01)
Article
Open AccessNetwork Function Virtualization (NFV) has attracted a lot of attention in the telecommunication field because it allows to virtualize core-business network functions on top of a NFV Infrastructure. Typically, virtual network ... -
Energy efficient line-of-sight millimeter wave small cell backhaul: 60, 70, 80 or 140 GHz?
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Conference report
Restricted access - publisher's policySpectrum scarcity together with high capacity demands make the use of millimeter wave (mmWave) frequencies an interesting alternative for next generation, i.e., fifth generation (5G), networks. Although mmWave is expected ... -
Energy efficient virtual machine consolidation under uncertain input parameters for Green Data Centers
(2015)
Conference report
Restricted access - publisher's policyReducing the energy consumption of data centers and the Cloud is very important in order to lower CO_2 footprint and operational cost (OPEX) of a Cloud operator. To this extent, it becomes crucial to minimise the energy ... -
Expected bit rate for terminals moving according to the random waypoint model in a WLAN cell
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Conference lecture
Restricted access - publisher's policyThe IEEE 802.11 standard defines the different bit rates and modulation schemes to which a WLAN device may adapt according to the channel quality. User mobility may also have an impact on the available bit rate. This paper ... -
Joint user association and backhaul routing for green 5G mesh millimeter wave backhaul networks
(2017)
Conference report
Restricted access - publisher's policyWith the advance of fifth generation (5G) networks, network density needs to grow significantly in order to meet the required capacity demands. A massive deployment of small cells may lead to a high cost for providing fiber ... -
Joint user association and energy aware routing for green small cell mmwave backhaul networks
(2017)
Conference report
Restricted access - publisher's policyA dense deployment of small cells is one of the key characteristics envisioned for future 5G mobile networks in order to provide the required capacity increase. To cut cabling costs, small cells are foreseen to form multihop ... -
Minimizing the impact of the handover for mobile users in WLAN: a study on performance optimization
(2016-04-01)
Article
Open AccessIEEE 802.11 based Wireless LANs are an important piece in today’s communication infrastructure in order to provide high speed wireless Internet access to static or quasi mobile users. For large WLAN deployments (i.e., ... -
Multi-objective optimization of WLAN associations with improved handover costs
(2014-11-01)
Article
Restricted access - publisher's policyThe deployment of a large number of access points in public areas presents a new paradigm in which a given station may be served by more than one access point at a time. Recently, a network model has been proposed to derive ... -
On the energy cost of robustness for green virtual network function placement in 5G virtualized infrastructures
(2017-10-09)
Article
Open AccessNext generation 5G networks will rely on virtualized Data Centers (vDC) to host virtualized network functions on commodity servers. Such Network Function Virtualization (NFV) will lead to significant savings in terms of ... -
Optimal user association, backhaul routing and switching off in 5G heterogeneous networks with mesh millimeter wave backhaul links
(Elsevier, 2018-05-26)
Article
Open AccessNext generation, i.e., fifth generation (5G), cellular networks will provide a significant higher capacity per area to support the ever-increasing traffic demands. In order to achieve that, many small cells need to be ... -
Optimising for energy or robustness? Trade-offs for VM consolidation in virtualized datacenters under uncertainty
(2016-07)
Article
Open AccessReducing the energy consumption of virtualized datacenters and the Cloud is very important in order to lower CO2 footprint and operational cost of a Cloud operator. However, there is a trade-off between energy consumption ... -
Predicting expected TCP throughput using genetic algorithm
(2016-10-24)
Article
Open AccessPredicting the expected throughput of TCP is important for several aspects such as e.g. determining handover criteria for future multihomed mobile nodes or determining the expected throughput of a given MPTCP subflow for ... -
Robust and energy-efficient user association and traffic routing in B5G HetNets
(2022-11)
Article
Open AccessNext-generation cellular networks, i.e., beyond fifth generation (B5G) and sixth generation (6G) networks, aim at significantly increasing capacity by deploying a massive number of small cells (SCs) and leveraging millimeter ... -
Robust association for multi-radio devices under coverage of multiple networks
(Springer, 2013)
Part of book or chapter of book / Conference lecture
Restricted access - publisher's policyMany devices are nowadays equipped with multiple wireless network interfaces such as GSM, HSPA+ and WLAN. This requires a mechanism for identifying which access network to use at a given time so to provide best user ... -
Robust optimization for energy-efficient virtual machine consolidation in modern datacenters
(SpringerLink, 2018-04-28)
Article
Open AccessEnergy efficient virtual machine (VM) consolidation in modern data centers is typically optimized using methods such as Mixed Integer Programming, which typically require precise input to the model. Unfortunately, many ... -
User association in 5G heterogeneous networks with mesh millimeter wave backhaul links
(Institute of Electrical and Electronics Engineers (IEEE), 2017)
Conference report
Open AccessFifth generation (5G) wireless networks will target at energy and spectrum efficient solutions to cope with the increasing demands in capacity and energy efficiency. To achieve this joint goal, dense networks of small ...
