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Proposed a new topology-control algorithms which is based on k-connectivity. In wireless sensor networks, the existing topology-control algorithms now can not meet the needs of WSN in fault tolerance, connectivity, redundancy and so on. In LKETA, the node deletes redundant edges according to the information of local neighbor nodes, and it adjusts transmission power with the power adjustment algorithm...
In this paper, we address the problem of topology control in wireless sensor networks (WSNs). Taking energy consumption and reliability into account, we consider topology control to be a problem of multi-objective degree-constrained minimum spanning tree (mcd-MST) and present an improved discrete particle swarm optimization (PSO) algorithm for generating such topology schemes. The simulation results...
Topology control of ad hoc and mesh networks specifies how to assign per-node transmission parameters (such as power level, frequency etc.) so as to achieve energy efficiency, while maintaining certain desirable properties such as connectivity. In autonomous networks, nodes may act in their self- interest and improve their performance, perhaps at the expense of other nodes', or even the overall network's,...
Typically, topology control is perceived as a per-node transmit power control process that achieves certain network- level objectives. We take an alternative approach of controlling the topology of a network purely by assigning channels to multiple radio interfaces on nodes. Specifically, we exploit the synergy between topology control and channel allocation to reduce the overall interference in multi-radio...
The main goal of topology control in wireless sensor networks is to reduce interference between competing signals and thus extend the battery life of sensor devices by minimizing retransmission of data. This paper proposes an algorithm, low bounded interference control, to minimize the lower and upper bounds on interference. The lower bound refers to the degree of any node, while the upper bound consists...
In wireless ad hoc networks, a planar topology enables nodes to deliver packets without a routing table. Pervious planar structures are fixed for the whole network. However, environmental or network dynamics such as channel status, interference or energy will prevent such structures from providing the best service to the network. In this paper, we present a t-adjustable planar structure (TAP) which...
In the recent years, topology control problem has been deeply studied for wireless ad hoc and sensor networks. The previous methods often imply that each node knows its precise position information. However, this assumption is not always feasible for the practical platform. Consequently, this paper concerns with the topology control problem without the location information in sensor networks. According...
In wireless ad hoc sensor networks (WASNs), a crucial issue is to reduce power consumption while satisfying some key network properties. In this paper, we propose a fault-tolerant topology control that optimizes the lifetime of the network at a given degree k of connectivity by minimizing power consumption. Our topology control is fully distributed and uses a model-based transmission power adaptation...
In this paper, the issue of network topology control in wireless networks using a fully distributed algorithm is considered. Whereas the proposed distributed algorithm is designed applying game theory concepts to design a non-cooperative game, network connectivity is guaranteed based on asymptotic results of network connectivity. Simulations show that for a relatively low node density, the probability...
We newly established loop hub technology for TC-net I/O loop which is useful to enhance the construction of the TC-net I/O loop flexibly. Loop hub effectively uses the advantage of the loop topology and can solve the weak point. Moreover, it becomes possible to achieve a flexible network configuration by achieving coexistence with the star topology. In this paper, we summarize the features of TC-net,...
In this paper we study state dependent and dynamically changing communication topology for two satellites under a control protocol for angular velocity consensus. Satellites are assumed to be moving with same linear velocity and having body fixed parallel axes of rotation. Each satellite is equipped with single communication antenna. We have achieved conditions on initial state of satellites that...
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