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Due to the rapid growth in scale and complexity of information networks, self-organizing systems have been focused on for realizing new network control architectures that have high scalability, adaptability, and robustness. However, in self-organizing systems, the uncertainty (incompleteness, ambiguity, and dynamicity) of information observable for components in the system can lead to the slow adaptation...
Traffic engineering (TE) plays an essential role in deciding routes that effectively use network resources. The TE controller should handle the uncertainty due to the lags and lacks of collected network information. Many previous work partially tackled this uncertainty problem in various aspects e.g. data collection, estimation, prediction, routing with uncertain traffic. However there are few studies...
When wavelength division multiplexing with path (circuit) switching is used on an optical network, even the failure of a single link may tear down many lightpaths and cause abrupt and significant changes in the utilization of many links in the corresponding VNT (virtual network topology). In this paper, we propose an algorithm called MFLDA (Minimum Flow Logical topology Design Algorithm) for designing...
SDI (Software Defined Infrastructure) provides virtualized infrastructures to customers by slicing computing resources and network resources. One of the important problems for deploying SDI framework is to control the assignment of physical resources to a virtual network against changes of traffic demand and service demand. For this problem, VNE (Virtual Network Embedding) problem that maps a virtual...
Information-Centric Networking (ICN) enables retrieval of content with various controls using flexibility of a content name, which is treated as a routing information. In existing works, however, data processings on end nodes or routers are mainly considered. Therefore, controls of physical behaviors, especially actual movement of devices, are not considered so much. we consider to incorporate physical...
For Internet service providers to efficiently use network resources, they need to conduct traffic engineering to dynamically control traffic routes to accommodate traffic with limited network resources. The performance of traffic engineering depends on the accuracy of traffic prediction. However, the volume of network traffic has been changing drastically in recent years due to the growth of various...
Self-organization has potential for high scalability, adaptability, flexibility, and robustness, which are vital features for realizing future networks. Convergence of self-organizing control, however, is comparatively slow in some practical applications. It is therefore important to enhance convergence of self-organizing controls without sacrificing the above advantages. Controlled self-organization...
To tackle with problems emerging with rapid growth of information networks in scale and complexity, selforganization is one of promising design principles for future networks. Convergence of self-organizing controls, however, is pointed out to be comparatively slow in some practical applications. Therefore, it is important to reveal and enhance convergence of self-organizing controls. In controlled...
Bio-inspired network controls are driven by the competition between their ordering force and disordering force. Both forces simultaneously affect their performance and robustness. Therefore, we must carefully determine their balance. In this paper, we focus on thermodynamic phenomena where a substance achieves the balance between both forces depending on its temperature. We translate bio-inspired...
Content-Centric Networking (CCN) is a novel architecture that has been proposed as a solution for dealing with various problems facing the Internet, such as the excessive bandwidth costs that result from peer-to-peer (P2P) traffic and content delivery networks (CDN). In order to deal with the difference between the principles of the Internet and the purposes for which it is actually used, CCN entails...
In this paper, we propose a proactive recovery method against multiple network failures for large-scale packet switching networks. The proposed method exploits the overlay networking technique. Specifically, it constructs multiple logical network topologies from the original overlay network topology by assuming various failure patterns. When a failure is detected, our method selects one topology....
In smart metering systems, when the density of node is high or distance of communication range is large, the adjacent node number becomes large. If routing based on the number of hop from the sink node is used in such a network, the deviation of load will become large and it will shorten the network lifetime, also degrades other network performance. In this paper, we proposed the techniques solving...
To tackle problems emerging with rapid growth of information networks in scale and complexity, bio-inspired self organization is considered one of promising design principles of a new generation network which is scalable, robust, adaptive, and sustainable. However, self-organizing systems would fall into a local optimum or never converge under some environmental conditions. Controlled or guided self-organization...
Recent studies have revealed that the adoption of application-level routing that chooses an end-to-end traffic route relaying other end-hosts can improve certain user-perceived performance factors. However, selfish route selection performed by each application user can lead to a decrease in the route performance due to route overlaps, as well as an increase in the inter-ISP transit cost as a result...
For sensor networks, the extension of operating time by controlling power consumption is an important research subject. In a receiver-driven communication protocol, a receiver node transmits its ID to the sender node periodically, and in response the sender node sends an acknowledgment. The average power consumption of the network can be controlled, but a part of the network shuts down when the battery...
Overlay routing is an application-level routing mechanism and existing research has revealed that overlay routing can improve user-perceived performance. On the other hand, overlay routing may harm the ISPs' cost structure because of the policy mismatch between IP routing and overlay routing. In a previous study, we proposed a method to reduce inter-ISP transit cost caused by overlay routing while...
In this paper, we propose a proactive recovery method against multiple network failures for large-scale packet switching networks. The proposed method exploits the overlay networking technique. Specifically, it constructs multiple logical network topologies from the original overlay network topology by assuming various failure patterns. When a failure is detected, our method selects one topology....
In this paper we propose a clustering and data gathering scheme for wireless sensor networks, based on a biologically-inspired approach that uses the concept of adaptive response by attractor selection as observed in a gene network. The approach uses a layered concept of clustering and routing that work independently, yet, resulting in an interdependent interaction via a common activity factor. This...
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 two major problems, especially when we consider recovering from large-scale network failures: updating interval for recalculation of routing configurations against network growth, and network traffic concentration...
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