-Mobile Ad Hoc Networks are for many practical scenarios in the real world as it does not need any pre-established infrastructure. Nodes in the MANET are resource constrained. Communications over network consume energy resources of the network gradually. Therefore it is essential to have mechanisms that consume fewer resources over network. Cooperative communication is the strategy that can imp...

In this paper, a two-tiered Wireless Sensor Network (WSN) where nodes are divided into clusters and nodes forward data to base stations through cluster heads is considered. To maximize the network lifetime, two energy efficient approaches are investigated. We first propose an approach that optimally locates the base stations within the network so that the distance between each cluster head and ...

Topology control with per-node transmission power adjustment in wireless sensor networks has been shown to be effective with respect to prolonging network lifetime via power conservation and increasing network capacity via better spatial bandwidth reuse. In this work, we consider the problem of topology control in a network of heterogeneous wireless devices with different maximum transmission r...

Introduction Multi-hop wireless networks, especially sensor networks, are expected to be deployed in a wide variety of civil and military applications. Minimizing energy consumption has been a major design goal for wireless networks. It can allow longer battery life and mitigate interference. Much research has been done to find topology control protocols that allow nodes to communicate using mi...

Renewables will soon dominate energy production in our electric power system. And yet, how to integrate renewable energy into the grid and the market is still a subject of major debate. Decentral Smart Grid Control (DSGC) was recently proposed as a robust and decentralized approach to balance supply and demand and to guarantee a grid operation that is both economically and dynamically feasible....

—Currently, Connected Dominating Sets (CDS) have been widely used to serve as virtual backbones for the topology control of wireless ad hoc networks. Lifetime is one of the most important characteristics of a wireless ad hoc network since mobile nodes are equipped with energy-limited batteries. In this paper, we propose two CDS construction algorithms, CDS-LL and Extended CDS-LL (E-CDS-LL), to...

We consider a topology control problem in which we are given a set of sensors in R and we would like to assign a communication radius to each of them so that they generate a connected network and have low receiver-based interference (defined as the largest in-degree of the network). We show that any radii assignment that generates a connected network can be modified so that interference is (asy...

Coordination and access control are related issues in open distributed agent systems, being both concerned with governing interaction between agents and resources. In particular, while coordination deals with enabling interaction and making it fruitful, access control is meant to control interaction to make it harmless. We argue that this twofold facet has to be supported by a system in a unifo...

© 2012 Chaudhry and Hafez, licensee InTech. This is an open access chapter distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Channel Assignment Using Topology Control Based on Power Control in Wireless Mes...