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Osaka University
(94 results)-
White Papers
Self-Organized Control for Visual Sensor Networks
May 1, 2010, 12:00am PDT
A visual sensor network consisting of embedded visual sensor nodes, e.g. wireless cameras, is promising as a monitoring and surveillance system for the high visibility and the amount of...
Provided by Osaka University
-
White Papers
A Reaction-Diffusion Based Coding Rate Control Mechanism for Camera Sensor Networks
June 28, 2010, 12:00am PDT
A wireless camera sensor network is useful for surveillance and monitoring for its visibility and easy deployment. However, it suffers from the limited capacity of wireless communication and a...
Provided by Osaka University
-
White Papers
Energy-Efficient Receiver-Driven Wireless Mesh Sensor Networks
December 23, 2010, 12:00am PST
A major challenge in wireless sensor networks research is energy efficiency. In the Intermittent Receiver-driven Data Transmission (IRDT) protocol, which aims at saving energy, communication...
Provided by Osaka University
-
White Papers
The Impact of FQDN Database Updates on Name-Based Routing Architecture
February 12, 2010, 12:00am PST
Sophisticated routing protocols, such as content-based routing, have been studied and proposed to replace Internet Protocol (IP) in the future Internet. Routing based on content will make finding,...
Provided by Osaka University
-
White Papers
Error-Tolerant Coverage Control Based on Bio-Inspired Attractor Selection Model for Wireless Sensor Networks
April 23, 2010, 12:00am PDT
A coverage problem is one of major issues of a wireless sensor network to prolong the lifetime while guaranteeing that the target region and objects are monitored by sufficient number of active...
Provided by Osaka University
-
White Papers
Energy Saving in Intermittent Receiver-Driven Multi-Hop Wireless Sensor Networks
December 14, 2009, 12:00am PST
A major challenge in wireless sensor networks is energy saving. In the Intermittent Receiver-driven Data Transmission (IRDT) protocol, which aims to save energy, communication between nodes...
Provided by Osaka University
-
White Papers
Trade-Off Evaluation Between Fairness and Throughput for TCP Congestion Control Mechanisms in a Wireless LAN Environment
May 19, 2010, 12:00am PDT
Per-flow unfairness of TCP throughput in the IEEE 802.11 wireless LAN environment has been reported. Although a number of researchers have proposed various methods for alleviating the unfairness,...
Provided by Osaka University
-
White Papers
Dynamics of Feedback-Induced Packet Delay in Power-Law Networks
May 21, 2010, 12:00am PDT
Dynamic interactions of various network-related protocols induced by the functional partition make the Internet to be complicated systems; details are hardly captured because of large-scale and...
Provided by Osaka University
-
White Papers
Robustness of Receiver-Driven Multi-Hop Wireless Network With Soft-State Connectivity Management
May 18, 2010, 12:00am PDT
Energy saving and ensuring robust data collection are the big subjects in realization of wireless sensor networks. In the Intermittent Receiver-driven Data Transmission (IRDT) protocol, which aims...
Provided by Osaka University
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White Papers
Adaptive Virtual Network Topology Control in WDM-Based Optical Networks
June 16, 2010, 12:00am PDT
Virtual Network Topology (VNT) is one efficient way to transfer the IP packet over the wavelength-routed optical networks. In recent years various new services have emerged, and IP traffic has...
Provided by Osaka University
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White Papers
Estimation of Traffic Amounts on All Links by Using the Information From a Subset of Nodes
July 6, 2010, 12:00am PDT
Traffic information is required to perform traffic engineering. However, as the network that require traffic engineering becomes large, the overhead to collect the traffic amount information...
Provided by Osaka University
-
White Papers
An Inter-Networking Mechanism Using Stepwise Synchronization for Wireless Sensor Networks
October 8, 2010, 12:00am PDT
To realize the ambient information society, multiple wireless networks deployed in the region or carried by users are required to cooperate with each other. Since duty cycles and operational...
Provided by Osaka University
-
White Papers
Self Transforming to Power Law Topology for Overlay Networks
November 5, 2010, 12:00am PDT
Designing the architecture of future network requires the understanding of how a topological structure influences the performance of a network. The paper of the topology known as complex network...
Provided by Osaka University
-
White Papers
Architectural Design of Unified Multiplex Communications for One-Time Use of IP Addresses
December 8, 2010, 12:00am PST
In the conventional IP network, all servers have a risk against any implicit/explicit attacks from unknown devices because the IP address of the server is fixed during the server is active. In...
Provided by Osaka University
-
White Papers
Self-Organization Based Network Architecture and Control Technologies for New Generation Networks
June 27, 2010, 12:00am PDT
An emerging new generation network is requested to accommodate an enormous numbers of nodes with high diversity and a wide variety of traffic and applications. To achieve higher scalability,...
Provided by Osaka University
-
White Papers
Low-Energy-Consumption Ad Hoc Mesh Network Based on Intermittent Receiver-Driven Transmission
February 22, 2010, 12:00am PST
In the ad hoc network, it is considered that mesh structure topology can achieve high communication reliability. However, since the power consumption in an ad hoc network of the mesh configuration...
Provided by Osaka University
-
White Papers
Robustness in Sensor Networks: Difference Between Self-Organized Control and Centralized Control
May 14, 2009, 12:00am PDT
Self-organized control has received significant attention in the area of networking, and one of the main factors for this attention is its robustness. However, it should be stressed that deciding...
Provided by Osaka University
-
White Papers
Energy Efficient Sleep Scheduling in Wireless Sensor Networks Inspired by Satellite Behavior of Frogs
January 26, 2010, 12:00am PST
One of the most challenging research tasks in the field of wireless sensor networks is controlling the power consumption of batteries and prolonging network lifetime. For sensor networks which...
Provided by Osaka University
-
White Papers
Latency Evaluation of WDM-Based Packet/Path Integrated Networks
December 18, 2009, 12:00am PST
Wavelength Division Multiplexing (WDM) technology multiplexes optical signals that take different wavelengths into the optical fiber, and offers a high bandwidth transmission. As an application of...
Provided by Osaka University
-
White Papers
A Model of Link Capacities in ISP's Router-Level Topology
December 18, 2009, 12:00am PST
Modeling the Internet is vital for network researches. Recent measurement studies on the Internet topology show that the degree distribution obeys the power-law distribution. However, only the...
Provided by Osaka University
-
White Papers
Decreasing ISP Transit Cost in Overlay Routing Based on Multiple Regression Analysis
July 27, 2009, 12:00am PDT
Overlay routing, which is a routing mechanism that works at the application level, selects a route for overlay network traffic based on user-perceived metrics, such as end-to-end latency and...
Provided by Osaka University
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White Papers
Self-Organizing Scale Free Topology for Peer-to-Peer Networks
September 9, 2009, 12:00am PDT
In operational P2P networks, an overlay topology needs to be constructed on the top of IP networks. Existing methods for the construction have limited self organizing behavior and some security...
Provided by Osaka University
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White Papers
Bio-Inspired Layered Clustering Scheme for Self-Adaptive Control in Wireless Sensor Networks
October 27, 2009, 12:00am PDT
In the future, Wireless Sensor Networks (WSNs) are expected to play an important part in the people everyday life. Sensor nodes are becoming more and more miniaturized, equipped with radio...
Provided by Osaka University
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White Papers
On Network Traffic Concentration and Updating Interval for Proactive Recovery Method Against Large-Scale Network Failures
September 10, 2009, 12:00am PDT
Proactive recovery methods from network failures, based on multiple routing configurations, are effective for quick failure recovery, as compared with reactive recovery methods. However, there are...
Provided by Osaka University
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White Papers
A Feasibility Evaluation on Name-Based Routing
May 14, 2009, 12:00am PDT
The IPv4 addressing scheme has been the standard for Internet communication since it was established in the 1960s. However, the enormous increase in Internet traffic usage has been leading in the...
Provided by Osaka University
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White Papers
Adaptability of Virtual Network Topology Control Based on Attractor Selection
August 4, 2009, 12:00am PDT
In recent years, the Internet accommodates various kinds of traffic generated by new applications, such as P2P, VoIP, and video streaming services. Since traffic of these applications gives...
Provided by Osaka University
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White Papers
On the Packet Delay Distribution in Power-Law Networks
May 22, 2009, 12:00am PDT
Measurement studies of the Internet topology have revealed that the degree distribution exhibits a power-law attribute. In this paper, the authors investigate packet-level delay behavior of...
Provided by Osaka University
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White Papers
Self-Organized Data-Energy-Aware Clustering and Routing for Wireless Sensor Networks
July 13, 2009, 12:00am PDT
In this paper, the authors propose a clustering and routing scheme for wireless sensor networks based on a self-organizing approach. The aim of this approach is for nodes to perform an integrated...
Provided by Osaka University
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White Papers
Bandwidth-Based Congestion Control for TCP: Measurement Noise-Aware Parameter Settings and Self-Induced Oscillation
February 3, 2009, 12:00am PST
With increase in the heterogeneity and complexity of the Internet, many problems have emerged in the traditional TCP Reno. Against the problem, the authors have proposed a new bandwidth-based TCP...
Provided by Osaka University
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White Papers
A New Method of Proactive Recovery Mechanism for Large-Scale Network Failures
February 25, 2009, 12:00am PST
This paper proposes a novel recovery mechanism from large-scale network failures caused by earthquakes, terrorist attacks, large-scale power outages and software bugs. The authors' method, which...
Provided by Osaka University
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White Papers
Evaluation of Free-Riding Traffic Problem in Overlay Routing and Its Mitigation Method
December 15, 2008, 12:00am PST
Recent research on overlay networks has revealed that user-perceived network performance could be improved by an overlay routing mechanism. The effectiveness of overlay routing is mainly a result...
Provided by Osaka University
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White Papers
Scalable and Density-Aware Measurement Strategies for Overlay Networks
February 8, 2009, 12:00am PST
In overlay networks, when the authors consider the effective and accurate measurement of underlay IP network between overlay nodes, it is important to take care the density of the overlay nodes in...
Provided by Osaka University
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White Papers
Layered Attractor Selection for Clustering and Data Gathering in Wireless Sensor Networks
July 8, 2009, 12:00am PDT
In this paper, the authors propose a clustering scheme for Wireless Sensor Networks (WSN) based on a biologically-inspired mathematical model of a gene network, initially introduced in. The aim of...
Provided by Osaka University
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White Papers
Deployable Overlay Network for Defense Against Distributed SYN Flood Attacks
March 25, 2008, 12:00am PDT
Distributed Denial-of-Service attacks on public servers have recently become more serious. Most of them are SYN flood attacks, since the malicious attackers can easily exploit the TCP...
Provided by Osaka University
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White Papers
Exact Sojourn Time Distribution in an Online IPTV Recording System
March 21, 2008, 12:00am PDT
In this paper, the authors analytically derive the sojourn time of a user accessing an online IPTV recording service. Basically, the system consists of a server (or server farm) and the bandwidth...
Provided by Osaka University
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White Papers
Node Pacing for Optical Packet Switching
March 22, 2008, 12:00am PDT
One of the difficulties of optical packet switched networks is buffering optical packets in the network. Burstiness of Internet traffic causes high packet drop rates and low utilization in very...
Provided by Osaka University
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White Papers
A Self-Organizing Concurrent Global Information Dissemination Scheme for Sensor Networks
May 29, 2008, 12:00am PDT
In this paper, the authors propose a distributed and self-organizing scheme for establishing efficient energy-saving concurrent data dissemination for wireless sensor networks. The proposed...
Provided by Osaka University
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White Papers
Traffic Dynamic in Modularity Structure of Complex Networks
February 25, 2009, 12:00am PST
Modularity structure is often found in many different types of complex networks. Especially, this topological property is believed to provide a certain degree of robustness to networks. This...
Provided by Osaka University
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White Papers
Biologically-Inspired Path Selection Scheme for Multipath Overlay Networks
September 29, 2008, 12:00am PDT
In this paper, the authors discuss the application of a biologically-inspired approach for path selection in overlay networks under the constraints of in-order packet delivery. They apply the...
Provided by Osaka University
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White Papers
Differences in Robustness of Self-Organized Control and Centralized Control in Sensor Networks Caused by Differences in Control Dependence
July 20, 2008, 12:00am PDT
Self-organized control has received significant attention in the area of networking, and one of the main factors for this attention is its robustness. However, it should be stressed that deciding...
Provided by Osaka University
-
White Papers
A Model of Link Capacities in ISP's Router-Level Topology
December 18, 2009, 12:00am PST
Modeling the Internet is vital for network researches. Recent measurement studies on the Internet topology show that the degree distribution obeys the power-law distribution. However, only the...
Provided by Osaka University
-
White Papers
Latency Evaluation of WDM-Based Packet/Path Integrated Networks
December 18, 2009, 12:00am PST
Wavelength Division Multiplexing (WDM) technology multiplexes optical signals that take different wavelengths into the optical fiber, and offers a high bandwidth transmission. As an application of...
Provided by Osaka University
-
White Papers
Energy Efficient Sleep Scheduling in Wireless Sensor Networks Inspired by Satellite Behavior of Frogs
January 26, 2010, 12:00am PST
One of the most challenging research tasks in the field of wireless sensor networks is controlling the power consumption of batteries and prolonging network lifetime. For sensor networks which...
Provided by Osaka University
-
White Papers
Robustness in Sensor Networks: Difference Between Self-Organized Control and Centralized Control
May 14, 2009, 12:00am PDT
Self-organized control has received significant attention in the area of networking, and one of the main factors for this attention is its robustness. However, it should be stressed that deciding...
Provided by Osaka University
-
White Papers
Low-Energy-Consumption Ad Hoc Mesh Network Based on Intermittent Receiver-Driven Transmission
February 22, 2010, 12:00am PST
In the ad hoc network, it is considered that mesh structure topology can achieve high communication reliability. However, since the power consumption in an ad hoc network of the mesh configuration...
Provided by Osaka University
-
White Papers
Self-Organization Based Network Architecture and Control Technologies for New Generation Networks
June 27, 2010, 12:00am PDT
An emerging new generation network is requested to accommodate an enormous numbers of nodes with high diversity and a wide variety of traffic and applications. To achieve higher scalability,...
Provided by Osaka University
-
White Papers
Architectural Design of Unified Multiplex Communications for One-Time Use of IP Addresses
December 8, 2010, 12:00am PST
In the conventional IP network, all servers have a risk against any implicit/explicit attacks from unknown devices because the IP address of the server is fixed during the server is active. In...
Provided by Osaka University
-
White Papers
Self Transforming to Power Law Topology for Overlay Networks
November 5, 2010, 12:00am PDT
Designing the architecture of future network requires the understanding of how a topological structure influences the performance of a network. The paper of the topology known as complex network...
Provided by Osaka University
-
White Papers
An Inter-Networking Mechanism Using Stepwise Synchronization for Wireless Sensor Networks
October 8, 2010, 12:00am PDT
To realize the ambient information society, multiple wireless networks deployed in the region or carried by users are required to cooperate with each other. Since duty cycles and operational...
Provided by Osaka University
-
White Papers
Estimation of Traffic Amounts on All Links by Using the Information From a Subset of Nodes
July 6, 2010, 12:00am PDT
Traffic information is required to perform traffic engineering. However, as the network that require traffic engineering becomes large, the overhead to collect the traffic amount information...
Provided by Osaka University
-
White Papers
Adaptive Virtual Network Topology Control in WDM-Based Optical Networks
June 16, 2010, 12:00am PDT
Virtual Network Topology (VNT) is one efficient way to transfer the IP packet over the wavelength-routed optical networks. In recent years various new services have emerged, and IP traffic has...
Provided by Osaka University
-
White Papers
Robustness of Receiver-Driven Multi-Hop Wireless Network With Soft-State Connectivity Management
May 18, 2010, 12:00am PDT
Energy saving and ensuring robust data collection are the big subjects in realization of wireless sensor networks. In the Intermittent Receiver-driven Data Transmission (IRDT) protocol, which aims...
Provided by Osaka University
-
White Papers
Dynamics of Feedback-Induced Packet Delay in Power-Law Networks
May 21, 2010, 12:00am PDT
Dynamic interactions of various network-related protocols induced by the functional partition make the Internet to be complicated systems; details are hardly captured because of large-scale and...
Provided by Osaka University
-
White Papers
Trade-Off Evaluation Between Fairness and Throughput for TCP Congestion Control Mechanisms in a Wireless LAN Environment
May 19, 2010, 12:00am PDT
Per-flow unfairness of TCP throughput in the IEEE 802.11 wireless LAN environment has been reported. Although a number of researchers have proposed various methods for alleviating the unfairness,...
Provided by Osaka University
-
White Papers
Energy Saving in Intermittent Receiver-Driven Multi-Hop Wireless Sensor Networks
December 14, 2009, 12:00am PST
A major challenge in wireless sensor networks is energy saving. In the Intermittent Receiver-driven Data Transmission (IRDT) protocol, which aims to save energy, communication between nodes...
Provided by Osaka University
-
White Papers
Error-Tolerant Coverage Control Based on Bio-Inspired Attractor Selection Model for Wireless Sensor Networks
April 23, 2010, 12:00am PDT
A coverage problem is one of major issues of a wireless sensor network to prolong the lifetime while guaranteeing that the target region and objects are monitored by sufficient number of active...
Provided by Osaka University
-
White Papers
The Impact of FQDN Database Updates on Name-Based Routing Architecture
February 12, 2010, 12:00am PST
Sophisticated routing protocols, such as content-based routing, have been studied and proposed to replace Internet Protocol (IP) in the future Internet. Routing based on content will make finding,...
Provided by Osaka University
-
White Papers
Energy-Efficient Receiver-Driven Wireless Mesh Sensor Networks
December 23, 2010, 12:00am PST
A major challenge in wireless sensor networks research is energy efficiency. In the Intermittent Receiver-driven Data Transmission (IRDT) protocol, which aims at saving energy, communication...
Provided by Osaka University
-
White Papers
A Reaction-Diffusion Based Coding Rate Control Mechanism for Camera Sensor Networks
June 28, 2010, 12:00am PDT
A wireless camera sensor network is useful for surveillance and monitoring for its visibility and easy deployment. However, it suffers from the limited capacity of wireless communication and a...
Provided by Osaka University
-
White Papers
Self-Organized Control for Visual Sensor Networks
May 1, 2010, 12:00am PDT
A visual sensor network consisting of embedded visual sensor nodes, e.g. wireless cameras, is promising as a monitoring and surveillance system for the high visibility and the amount of...
Provided by Osaka University
-
White Papers
Comparison of Packet Switch Architectures and Pacing Algorithms for Very Small Optical RAM
November 29, 2010, 12:00am PST
One of the difficulties with Optical Packet Switched (OPS) networks is buffering optical packets in the network. The research on optical RAM presently being done is not expected to achieve a large...
Provided by Osaka University
-
White Papers
A Modeling Method for Router-Level Topologies Based on Network-Cost Optimization
September 1, 2011, 12:00am PDT
Measurement studies of Internet topologies show that the degree distribution of the topologies exhibits a power-law attribute. However, it is apparent that only degree distributions do not...
Provided by Osaka University
-
White Papers
Models of Link Capacity Distribution in ISP's Router-Level Topology
September 1, 2011, 12:00am PDT
Modeling the Internet is vital for network researches. Recent measurement studies on the Internet topology show that the degree distribution obeys the power-law distribution. However, only the...
Provided by Osaka University
-
White Papers
A Smart Access-Point Selection Algorithm for Scalable Wireless Mesh Networks
August 24, 2011, 12:00am PDT
As a flexible, cost-efficient solution for a scalable Internet-access network, the authors have studied the architecture and design optimization issues of the Wireless Internet-access Mesh NETwork...
Provided by Osaka University
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White Papers
Power ControlMethods for Improving Spatial Reuse in TDMA-BasedWirelessMesh Networks
June 20, 2011, 12:00am PDT
Wireless Mesh Networks (WMNs) have attracted a great deal of interest in recent years as a cost-effective method to provide a wireless network infrastructure. To accommodate various types of...
Provided by Osaka University
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White Papers
Development of Radio on Free Space Optics System for Ubiquitous Wireless
January 6, 2008, 12:00am PST
Radio on Fiber (RoF) with layer 1 routing capability can realize a cost effective universal platform for future ubiquitous wireless services. The layer 1 routing concept can be realize by not only...
Provided by Osaka University
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White Papers
The Effects Of A Monetary Policy Shock: Evidence From India
July 1, 2009, 12:00am PDT
This paper empirically investigates the transmission of the Reserve Bank of India (RBI)'s monetary policy at a time when multiple indicator approaches are popular, using a structural VAR approach....
Provided by Osaka University
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White Papers
Introduction to the Special Issue on Advances on Heterogeneous Wireless Sensor Networks
April 25, 2008, 12:00am PDT
Heterogeneous Wireless Sensor Networks (HWSNs), supported by recent technological advances in low power wireless communications along with silicon integration of various functionalities such as...
Provided by Osaka University
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White Papers
Assessing The Impact Of The ASEAN Economic Community
March 23, 2011, 12:00am PDT
Consequences of the ASEAN Economic Community (AEC) are investigated using a dynamic Computable General Equilibrium (CGE) model. Quantitative assessments of the effects on economic welfare, trade...
Provided by Osaka University
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White Papers
On Parameter Tuning of Data Transfer Protocol GridFTP for Wide-Area Networks
December 10, 2010, 12:00am PST
In wide-area Grid computing, geographically distributed computational resources are connected for enabling efficient and large-scale scientific/engineering computations. In the wide-area Grid...
Provided by Osaka University
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White Papers
The End Of Import-led Growth? North Korean Evidence
October 1, 2007, 12:00am PDT
In this paper, the authors investigate causal relationships among exports, imports, and economic growth in North Korea by using time series data for the period between 1964 and 2004. The empirical...
Provided by Osaka University
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White Papers
A Planner Of Global Income Transfers: International Public Goods And Productivity Differentials
December 4, 2008, 12:00am PST
The purpose of this paper, by introducing the adjustment expense of global income transfers across N countries, is to produce an explicit rule for the planner country regarding income transfers,...
Provided by Osaka University
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White Papers
Global Shocks And The Japanese Economy: Structural Changes In The 1990s
December 15, 2009, 12:00am PST
This paper analyzes how those global shocks as foreign business cycles and exchange rate realignments affect the Japanese economy and whether there are structural changes in the transmission...
Provided by Osaka University
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White Papers
Robustness Based Ant Colony Optimization Routing for Ad Hoc Networks With GPSs
May 16, 2008, 12:00am PDT
The authors propose a new Ant Colony Optimization (ACO) routing algorithm for Mobile Ad hoc NETworks (MANETs) with GPSs. In ACO routing, a data packet is transferred along a path selected with...
Provided by Osaka University
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White Papers
Performance Evaluation of Data Transfer Protocol GridFTP for Grid Computing
June 9, 2009, 12:00am PDT
In Grid computing, a data transfer protocol called GridFTP has been widely used for efficiently transferring a large volume of data. Currently, two versions of GridFTP protocols, GridFTP version 1...
Provided by Osaka University
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White Papers
Congestion Propagation Among Routers With TCP Flows
July 1, 2009, 12:00am PDT
In recent years, various non-linear phenomena of the Internet have been discovered. For instance, it is reported that congestion of a router propagates to neighboring routers like a wave. Several...
Provided by Osaka University
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White Papers
Network Virtualization Server for Adaptive Network Control
May 20, 2009, 12:00am PDT
This paper considers the virtualization technologies of an optical network infrastructure and the design of related systems. The objective of the research project is to develop a network...
Provided by Osaka University
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White Papers
Advanced Query Processing in Mobile Ad Hoc Networks
February 10, 2009, 12:00am PST
At the early stage of Mobile Ad hoc NETworks (MANETs) research, most studies focused on routing protocols to support communications among mobile nodes connected to each other by one-hop/multi-hop...
Provided by Osaka University
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White Papers
Multi-Project Software Engineering: An Example
January 1, 2010, 12:00am PST
In this paper authors present an approach for developers to benefit from multi-project software knowledge. As authors show in this paper, this can be achieved by gathering information about how...
Provided by Osaka University
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White Papers
A Grid Environment for Data Integration of Scientific Databases
January 1, 2010, 12:00am PST
Effective integration of heterogeneous data sources has been studied as the most pressing challenge in various fields; such as, high energy physics, astronomy, and life sciences. In this talk,...
Provided by Osaka University
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