Willow: Saving Data Center Network Energy for Network-Limited Flows
Today’s giant data centers are power hungry. Data center energy saving not only helps control the operational cost, but also benefits the sustainable growth of cloud services. Due to the adoption of much more switches in modern data centers as well as the mature server-side power management techniques, energy saving for the data center network […]
CUTBUF: Buffer Management and Router Design for Traffic Mixing in VNET-based NoCs
Router’s buffer design and management strongly influence energy, area and performance of on-chip networks, hence it is crucial to encompass all of these aspects in the design process. At the same time, the NoC design cannot disregard preventing network-level and protocol-level deadlocks by devoting ad-hoc buffer resources to that purpose. In Chip Multiprocessor Systems (CMPs) the coherence […]
Human Mobility Enhances Global Positioning Accuracy for Mobile Phone Localization
Global positioning system (GPS) has enabled a number of geographical applications over many years. Quite a lot of location-based services, however, still suffer from considerable positioning errors of GPS (usually 1 to 20 m in practice). In this study, we design and implement a high-accuracy global positioning solution based on GPS and human mobility captured by mobile […]
Graphine: Programming Graph-Parallel Computation of Large Natural Graphs on Multicore Cluster
Graph-parallel computation has become a crucial component in emerging applications of web search, data analytics and machine learning. In practice, most graphs derived from real-world phenomena are very large and scale-free. Unfortunately, distributed graph-parallel computation of these natural graphs still suffers strong scalability issues on contemporary multicore clusters. To embrace the multicore architecture in distributed graph-parallel computation, we propose the framework Graphine, […]
Multicent: A Multifunctional Incentive Scheme Adaptive to Diverse Performance Objectives for DTN Routing
In Delay Tolerant Networks (DTNs), nodes meet opportunistically and exchange packets only when they meet with each other. Therefore, routing is usually conducted in a store-carry-forward manner to exploit the scarce communication opportunities. As a result, different packet routing strategies, i.e., which packet to be forwarded or stored with priority, can lead to different routing […]
Performance evaluation of ADV DSR & GOD in VANET for city & highway scenario
VANET has grasp the attention of various researchers in this field due to its wide range of applications in different fields i.e comfort, safety and entertainment. It is very expensive to test every networkprotocol or any network algorithm in real network by connecting a number of routers, computers and data links. Thus, in this paper QOS parameters like throughput, packet […]
Analysis of the Scalability and Stability of an ACO Based Routing Protocol for Wireless Sensor Networks
Wireless Sensor Networks (WSNs) are often deployed in remote and hostile areas and because of their limited power and vulnerability, the sensors may stop functioning after sometime leading to the appearance of holes in a network. A hole created by the non-functioning sensors in turn severs the connection between one side and the other side of the network and alternative […]
A cross validation of network system models for delay tolerant networks
This paper presents a cross validation of network system models in two simulation tools, namely the ONE Simulator and Scenargie, for the simulation of Delay or Disruption Tolerant Networks (DTNs). The study compares the simulation results from three network system models provided by the twosimulators as well as their efficiency for a commonly used DTN scenario. The results show a fundamental problem inherent to […]
A calibration based thermal modeling technique for complex multicore systems
A calibration based method to construct fast and accurate thermal models of the state-of-the-art multicore systems is presented. Such models are usually required during Design Space Exploration (DSE) exercises to evaluate various task-to-core mapping, associated scheduling and processor speed-scaling options for their overall impact on the system temperature. Current approaches require modeling the thermal characteristics […]
A new RA-DA hybrid MAC approach for DVB-RCS2
This paper proposes a new MAC scheme for DVB-RCS2 aimed to efficiently address M2M/SCADA traffic. The proposed scheme relies on the idea to complement Random Access (RA) schemes with Dedicated Access (DA) schemes, when traffic spikes feed the network. The rationale is to control the offered load on the RA slots pool to keep the packet […]
