The existence of multiple gateways, as is a common case in Wireless Mesh Networks (WMNs), brings the possibility to improve network performance. However, previous studies, including both heuristic-based works and theory-driven crosslayer design works, cannot guarantee an optimal exploitation of multiple gateways. In this paper, we focus on exploiting multiple gateways optimally to achieve maximum…
Tags: OMNeT++ WBAN
Error control scheme using decomposable codes for various QoS in multiple WBAN environment
Recently, studies on medical and health monitoring systems using wireless communications have been actively conducted. In the field of health monitoring systems, Wireless Body Area Network (WBAN) is one of the key technologies and its standardization activities have also been extensively carried out. As our previous work, we proposed an optimal QoS control scheme employing…
Retaining control over SDN network services
Both academic researchers and network vendors have started to promote Software-Defined Networking (SDN) as a new network paradigm, in which controller systems play a major role. A modular and extensible design allows network operators to extend the controller’s functionality by so called network services. Unfortunately, in current designs such network services have unlimited access to…
OpenFlow-assisted online defragmentation in single-/multi-domain software-defined elastic optical networks [invited]
Spectrum fragmentation limits the efficiency of spectrum utilization in elastic optical networks (EONs). This paper studies how to take advantage of the centralized network control and management provided by software-defined EONs (SD-EONs) for realizing OpenFlow-assisted implementation of online defragmentation (DF). We first discuss the overall system design and OpenFlow protocol extensions to support efficient online…
Predictable Dynamics of Opinion Forming for Networks With Antagonistic Interactions
For communities of agents which are not necessarily cooperating, distributed processes of opinion forming are naturally represented by signed graphs, with positive edges representing friendly and cooperative interactions and negative edges the corresponding antagonistic counterpart. Unlike for nonnegative graphs, the outcome of a dynamical system evolving on a signed graph is not obvious and it…
Distributed Topological Convex Hull Estimation of Event Region in Wireless Sensor Networks without Location Information
In critical event (e.g., fire or gas) monitoring applications of wireless sensor networks (WSNs), convex hull of the event region is an efficient tool in handling the usual tasks like event report, routes reconstruction and human motion planning. Existing works on estimating convex hull of event region usually require location information of sensor nodes, which…
TDMA-based MAC Protocols for Vehicular Ad Hoc Networks: A Survey, Qualitative Analysis and Open Research Issues
Vehicular Ad-hoc NETworks (VANETs) have attracted a lot of attention in the research community in recent years due to their promising applications. VANETs help improve traffic safety and efficiency. Each vehicle can exchange information to inform other vehicles about the current status of the traffic flow or a dangerous situation such as an accident. Road…
A System-Level Cosynthesis Framework for Power Delivery and On-Chip Data Networks in Application-Specific 3-D ICs
With increasing core counts ushering in power-constrained 3-D multiprocessor system-on-chips (MPSoCs), optimizing communication power dissipated by the 3-D network-on-chip (NoC) fabric is critical. At the same time, with increased power densities in 3-D ICs, problems of IR drops in the power delivery network (PDN) as well as thermal hot spots on the 3-D die are…
Interrelationship of protection and communication to improve power system reliability
Dependencies of protection schemes on communications have been acknowledged and discussed in various papers. This paper expands this topic by examining field experiences that required protection engineers to deepen their understanding of communication technologies to interpret protection scheme behavior and perform event analysis. A deployed power system line protection application utilizing segregated phase comparison protection scheme with distance protection…
Evaluating the Performance Impact of Communication Imbalance in Sparse Matrix-Vector Multiplication
HPC applications make intensive use of large sparse matrices with the matrix-vector product representing a significant fraction of the total run-time. These matrices are characterized by non-uniform matrix structures and irregular memory accesses that make it difficult to achieve a good scalability in modern HPC platforms with multi-or many-cores, SIMD and high-speed communication networks. One of the…