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Wireless sensor networks (WSNs) have recently emerged as suitable data collection tools for both military and civil applications. In an indoor factory monitoring environment sensor relocation and/or addition are necessary with reorganization of production lines and/or starting of new production lines. Due to memory, processing, etc. constraints of the wireless nodes these addition and relocation affect...
In most of the indoor factory monitoring system sensor relocations and reorganizations are necessary with reorganization of production lines and/or starting of new production lines. These relocations and/or additions sometime make congestion in some area of the network and difficult to achieve online expansion. As a result, in the dynamic changing environment the online expansion is a challenging...
This paper examines the possible uses of different market mechanisms for resource allocation at different levels of Wireless Sensor Network (WSN) architecture. The goal is to maximize the Value of Information (VoI) for WSN users. We discuss three different levels of WSN architecture. The lowest level focuses on individual nodes and their basic functions of sensing and routing. We give an example showing...
A novel hybrid Dynamic Multi-Level (DyML) flow control scheme for Networks-on-Chip is proposed. DyML uses a buffer fluidity flow monitor for real-time monitoring the incoming traffic volume. Instead of buffering as many flits as a router can afford, DyML dynamically adjusts the proper number of buffering flits. Accordingly, DyML causes less in-transit packets in the network, thus improves packet latency...
“Future Internet” must support complex network environments and service types. But nowadays routing devices cannot fulfill all the requests. So the concept of reconfigurable and programmable router has been proposed. In this paper, we proposed a novel task-driven dynamic reconfigurable router architecture. By sampling and monitoring the ingress and egress flow, also by tasks analysis and controlling,...
In this paper, we take a fresh look at stub-site multihoming within the paradigms of an identifier/locator split architecture. More specifically, we investigate the possibility of enabling multi-homed stub network sites to improve the performance of their end-to-end TCP flows by leveraging the path diversity of the underlying network. We design a host-network co-operative mechanism for end-to-end...
The current closed network infrastructure creates a gap between industry and academy. This paper discusses a framework of a completely open network infrastructure, including open routing devices and open operation of those devices. By such an open network, academia researchers and industry practitioners can jointly work on the network design, optimization and innovation, which provide another dimension...
InfiniBand networks are aimed to fulfill increasing communication demand of parallel applications in high performance clusters. However, the dynamic behavior of communication load may cause bottlenecked link(s) which lead to message congestion. Congestion spreading increases latency and reduces network throughput causing important performance degradation. In this paper, we propose a congestion control...
In this paper, we present experimental results from testbed implementation of a simple monitoring assisted local route recovery scheme for wireless mesh networks (WMN). The scheme exploits the broadcast nature of wireless transmissions at special routers with added monitoring functionalities. These routers passively listen to the transmissions in the neighborhood and compare the forwarding behavior...
We introduce two approaches for power saving routers, which are the power efficient designing and the power saving designing. Power efficient designing enables a high performance router at low power consumption. As a part of power efficient designing, we have integrated ASICs/FPGAs of routers and developed a scalable central architecture. Additionally, we used new high speed memories and high speed...
This paper puts forward a new method of channel monitoring for the optic fiber longitudinal differential protection. It involves following approaches: the differential protections at two ends of line communicate according to designed message frame format; calculate and store the communication channel delay of each message frame; estimate the stability of channel delay according to the criterion inequality,...
This paper investigates the stability characteristics of overlay networks performing switching between multiple virtual paths. A global stability condition for switched-control-systems has been applied to overlay path switching frequency, that can be incorporated into design of better routing protocols for overlay networks. Further, NS-2 based simulations have been carried out on an overlay network...
Maximizing network lifetime and minimizing energy consumption and are two central issues in the design wireless sensor networks (WSN) protocols. In this paper, we address energy-efficient state assignment to sensors in cluster-based WSN, under the constraint of full coverage of the area the sensors are deployed in and connectivity of cluster heads. We consider that any sensor can be turned on, turned...
With the development of wireless communication and microelectronic technology, wireless sensor network (WSN) have shown big potential in environmental monitoring and industrial applications. Failures of nodes or links are inevitable in sensor networks due to the inhospitable environment and unattended deployment. To improve the reliability of wireless sensor networks, a cluster-based routing method...
Power company have been operated the automation system for relaying and supervisory controls by using public communication network. But these systems must have the strictest requirements of communication. For these reasons, there are a lot of difficulties to apply to the automation system considering the cost, location environment, and other characteristics of power lines. But, recently, the existing...
Experimental evaluation as a proof of concept of today's status of IP-OTN interworking were performed. The impact of optical switching on IP traffic and on backbone router performance are reported and potential inter-layer co-ordination schemes are proposed
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