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This paper proposes a novel dynamic core-based selection (DCS) algorithm for the multicast restoration in WDM mesh networks. The core-based fault tolerance scheme provides a flexible way to control a number of core nodes with less control overheads for searching the routing path, wavelength assignment (RWA) and restoration paths when fault occurs in the one-to-many multicast domain. Compared with the source-based scheme, core-based schemes are easier to maintain, and specifically scalable in large-scale topologies. In the core-based fault tolerance scheme, k-tuple domination nodes are selected to form a minimum sized vertex subset such that each vertex in the graph is dominated by at least k vertices, where the k is defined as two in this paper. The proposed DCS algorithm is defined as each node in multicast tree session must be directly connected to at least one core node in multicast tree session and also has to be directly connected to at least one core node out of multicast tree session. The primary aim of this work is to provide the scalable and fast local survivability based on the information from core nodes. Simulation results show that the proposed algorithm outperforms the Dual Tree and MRLR algorithms in terms of total hop counts needed for all recovery paths and blocking probability for different network topologies. [ABSTRACT FROM AUTHOR]

In our paper, we are utilizing the cellular wireless network with high reliability using fixed relay nodes. The size and scope of wireless networks continue to grow with more clients or users, and introduction of innumerable devices and sensors at homes and businesses. These, in conjunction with short and dynamic flow of information, is adding to the spatiotemporal complexity of the network topology and dynamics requiring self organization. [ABSTRACT FROM AUTHOR]

Chapter 19 surveys energy efficient routing protocols for wireless ad hoc networks. It includes localized routing algorithms that optimize based on power and other metrics, network topology generation designed to optimize power consumption, routing algorithms that balance power consumption among all network nodes, and algorithms that maximize nodes' lifetimes. [ABSTRACT FROM PUBLISHER]

Chapter 22 surveys communication related issues arising in the context of Low Earth Orbit (LEO) satellite constellations. In particular, it studies the impact of the predictable movement of the satellites on the techniques used in topological design, routing, and hand-over strategies. [ABSTRACT FROM PUBLISHER]

Chapter 28 focuses on design issues and options for the physical layer, and media access control layer protocols (IEEE 802.11, HomeRF and Bluetooth) that have been proposed for the indoor wireless environments. Network topology and self-organization of such networks, with special reference to Bluetooth, are also discussed. [ABSTRACT FROM PUBLISHER]

This article discusses various issues related to the electrical network theorems. The article makes specific reference to the Kirchhoff networks. The article authors describes electrical networks from the Kirchhoff point of view. The descriptive equations are decomposed into the constitutive relations for the network elements and the Kirchhoff equations for the connection element, i.e. network topology. Based on Kirchhoff's point of view, two networks can be different with respect to the connection element, the kinds of network elements, and/or the associated network parameters. Interestingly, many of the network theorems and certain properties of networks can be discussed in a unified manner using this classification.

An encyclopedia entry for "MaxAge Timer" is presented. It refers to a Spanning-Tree Protocol (STP) timer that defines how long a bridge or switch should wait after the last received hello message before believing that the network topology has changed, and it can no longer hear the hello messages sent by the root bridge or switch.

An encyclopedia entry for "Ring Topology" is presented. Ring Topology refers to a network topology which is composed of a series of repeaters connected to one another by unidirectional transmission links to create a single closed loop. Most often, Ring Topology are organized in a closed-loop star formation.

A definition of the term "partial mesh" is presented. In networking and telecommunication, this refers to a type of network topology in which some nodes are organized in a full mesh scheme but others are only connected to one or two network in the network. In peripheral networks connected to a full meshed backbone, a partial mesh topology is commonly found.

A definition of the term "Network Topology" is presented. It refers to the specific physical, logical, or virtual arrangement of the network components and devices. It is determined only by the configuration of connections between nodes. A network topology does not affect distances between nodes, physical interconnections, transmission rates, and signal types.

A definition of the term "Intermediate System-to-Intermediate System" (IS-IS), in relation to computer network system is presented. A routing protocol developed by the International Organization for Standardization (ISO), IS-IS is a link-state protocol where ISs exchange routing information based on a single metric to identify network topology.

An encyclopedia entry on "Dual Homing," a network topology in which a device is connected to the network by way of two independent access points, is presented. Its primary connection is one access point, and the other is a standby connection that is activated in case of a failure of the primary connection.

An encyclopedia entry on "Dual Counter-rotating Ring" is presented. It refers to a network topology in which two signal paths, whose directions are opposite each other, exist in a token-passing network. It is noted that this concept serves as the basis for fiber distributed data interface (FDDI) and copper distributed data interface (CDDI).

A definition of the term "Dedicated Local Area Network (LAN)" is presented. It refers to a network segment allocated to a single device that is used in LAN-switched network topologies.