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The efficacy of topology control has been shown to be a vital process to maximize the network lifetime of wireless sensor networks. In this paper, we present a distributed topology algorithm with transmission power adjustment based on optimal number of neighbors to raise the network energy-efficiency and the network throughput by reducing channel competition intensity and simplifying the complexity...
In this paper, we consider the problem of topology control by joint power control and routing to maximize the network throughput in wireless mesh networks. First, we present two mathematical formulations of the joint power control and routing problem according to two different definitions of network throughput: the total throughput and the minimal per-node throughput. To reduce the computation cost,...
Wireless sensor networks have a wide range of potential, practical and useful applications. However, there are many challenging problems that need to be addressed for efficient operation of wireless sensor networks in real applications. One of the fundamental and important problems in sensor networks is the topology control problem since most sensors are equipped with non-rechargeable batteries and...
There is great interest in using mobile adhoc networks (MANETs) for military and civilian applications. There are still a lot of interesting problems investigating the capacity and the optimal design of these networks. This paper looks at one of these outstanding problems. Specifically the problem addressed is to determine how the capacity of a MANET can be increased by the optimal placement of an...
To extend the lifetime of wireless sensor networks a power-aware design of the communication units is required. This can be accomplished by employing power-controllable impulse radio ultra-wideband (IR-UWB) transceivers. In this paper, two distributed power control algorithms are suggested that are based on a variation of IR-UWB specific parameters. The iterative algorithms converge to the optimal...
The multi-scenario of the topology in the hybrid ad hoc networks is studied and a novel cross layer resource scheduling scheme based on the topology is proposed in this paper. The proposed scheme integrated the attributes both of the new performance evaluation machine link resource check metric (MLRCM) and the topology space with the special multi-scenario. The power consumption of each node can be...
For node-intensive sensor networks, hierarchical topology control can effectively save energy. Based on the existing two-layer model, we propose a logical three-tiered topology control model which consist of relay nodes(RNs), application nodes(ANs) and sensor nodes(SNs). Under this architecture, the goal of lower-tier SNs is to sense the playing fields and middle-tier ANs only neeed to gather data...
Wireless topology control attempts to harness the programmability of radios to build efficient network structures. This paper addresses energy minimization in an ad hoc network of selfish nodes by jointly considering packet forwarding and packet sourcing-two main sources of energy consumption in multi-hop networks. Specifically, we examine how energy-efficient topologies can be established through...
Topology control is an effective measure at network layer to implement power control for energy-saving, which is a critical issue in ad-hoc wireless networks. Topology control also affects other significant performances of network, such as packet delivery radio, end-to-end delay, and network capacity etc. Various techniques and algorithms have been proposed to achieve the optimal topology which can...
This paper presents a simple routing protocol based on topology control that improves the lifetime of a wireless sensor network in the usual convergecast pattern, by allowing the nodes to choose between two predefined power-levels to forward data towards the sink. The proposed protocol takes advantage of non-homogeneous topologies, where the nodes are grouped in clouds. Nodes will only use the highest...
Due to low cost, ease of deployment, increased coverage, and enhanced capacity, multiradio mesh networks that utilize inexpensive and readily available Institute of Electrical and Electronics Engineers (IEEE) 802.11 wireless interfaces are touted as the new frontier of wireless networking. In a multihop mesh system, the close interaction between topology control and routing selection affects the system...
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