Results 1 -
5 of
5
SOFROP: Self-Organizing and Fair Routing Protocol for Wireless Networks with Mobile Sensors and Stationary Actors
"... Abstract—Wireless sensor and actor networks (WSAN) have become increasingly popular in recent years. The cooperative operation between sensor and actor nodes results in a major advantage against pure sensor networks and extends the range of possible application scenarios. One emerging application is ..."
Abstract
-
Cited by 4 (4 self)
- Add to MetaCart
(Show Context)
Abstract—Wireless sensor and actor networks (WSAN) have become increasingly popular in recent years. The cooperative operation between sensor and actor nodes results in a major advantage against pure sensor networks and extends the range of possible application scenarios. One emerging application is the Amazon scenario in which stationary actors are deployed at accessible points in a thick forest structure and sensor nodes are thrown in a river flowing through the forest to gather observations from unreachable areas of the forest. This unprecedented and unique setting exposes two important challenges: (a) the dynamics of the river forms a continuously varying topology of sensor nodes requiring a highly adaptive network organization and (b) the inherent features of sensor and actor nodes, combined with rapid changes in the link structure of the network require efficient bandwidth utilization and data transmission. In this paper, we address these challenges by introducing SOFROP, a novel self-organizing and fair routing protocol for WSANs. The extensive simulations that are carried out for evaluation point out two highlights of SOFROP. These are the lightweight and efficient routing that is optimized for fairness and the locally acting adaptive overlay network formation. I.
2009 Fifth International Conference on Mobile Ad-hoc and Sensor Networks Greedy geographic routing algorithms in a real
"... Abstract—Existing theoretical and simulation studies on georouting appear detached from experimental studies in real environments. We set up our test environment by using WSN430 wireless sensor nodes. To overcome the need for significant number of wireless nodes required to perform a realistic exper ..."
Abstract
- Add to MetaCart
(Show Context)
Abstract—Existing theoretical and simulation studies on georouting appear detached from experimental studies in real environments. We set up our test environment by using WSN430 wireless sensor nodes. To overcome the need for significant number of wireless nodes required to perform a realistic experiment in high density network, we introduce a novel approach- emulation by using relatively small number of nodes in 1-hop experimental setup. Source node is a fixed sensor, all available sensors are candidate forwarding neighbors with virtual destination. Source node makes one forwarding step, destination position is adjusted, and the same source again searches for best forwarder. We compare three georouting algorithms. We introduce here Greedy geographical routing Algorithms in a REal environment (GARE) which builds a RNG by using ETX(uv) as edge weight (ETX(uv) |uv| counts all transmissions and possibly acknowledgments between two nodes until message is received), and selects RNG neighbor with greatest progress toward destination (if none of RNG neighbors has progress, all neighbors are considered). Our experiments show that GARE is significantly more efficient than existing XTC algorithm (applying RNG on ETX(uv)) inenergy consumption. COP GARE selects neighbor with progress that minimizes ETX(uv), and outperforms both algorithms. |uv| Index Terms—wireless sensor network; routing; emulation; realistic environment. I.
SOFROP: Self-Organizing and Fair Routing 1 Protocol for Wireless Networks with Mobile Sensors and Stationary Actors
"... Wireless sensor and actor networks (WSAN) have become increasingly popular in recent years. The combined operation between sensor nodes and actors results in a major advantage compared to pure sensor networks extending the range of possible applications. One of the emerging applications is the Amazo ..."
Abstract
- Add to MetaCart
(Show Context)
Wireless sensor and actor networks (WSAN) have become increasingly popular in recent years. The combined operation between sensor nodes and actors results in a major advantage compared to pure sensor networks extending the range of possible applications. One of the emerging applications is the Amazon scenario in which stationary actors are deployed at accessible points in a thick forest structure and sensor nodes are thrown in a river flowing through the forest to gather observations from unreachable areas. This unprecedented and unique setting exposes two important challenges: (a) the dynamics of the river forms a continuously varying topology of sensor nodes requiring a highly adaptive network organization and (b) the inherent features of sensor and actor nodes, combined with rapid changes in the link structure of the network requiring efficient bandwidth utilization and data transmission. In this paper, we address these challenges by introducing SOFROP, a self-organizing and fair routing protocol for WSANs. Through extensive simulations, we point out two highlights of SOFROP: the efficient lightweight routing that is optimized for fairness and the locally acting adaptive overlay network formation.
Serbia
"... Self-shielded flux cored welding wires have become very popular over the last decade, because of the various benefits they provide in relation to coated stick electrodes and welding wires with solid cross-section. Determination of optimal parameters for self-shielded flux-cored welding process is cr ..."
Abstract
- Add to MetaCart
(Show Context)
Self-shielded flux cored welding wires have become very popular over the last decade, because of the various benefits they provide in relation to coated stick electrodes and welding wires with solid cross-section. Determination of optimal parameters for self-shielded flux-cored welding process is crucial for achieving the required level of quality of welded joints. Wire feed speed, welding current and arc voltage were measured in real-time during the welding and optimal functional relations between these parameters were formed using regression analysis. The results and comparison of established regression models with generally known models applicable to the wires with solid crosssection are presented in this paper.
EEDTCA: Energy Efficient, Reduced Delay and Minimum Distributed Topology Control Algorithm for Mobile Ad Hoc Network
"... Abstract: Processing packets across Mobile Ad hoc Network, Topology control minimize interference among node in a network, increase the network capacity and extend lifetime of the network. Emerging research in mobile ad hoc networks (MANETs) says, there is a growing requirement of quality of service ..."
Abstract
- Add to MetaCart
(Show Context)
Abstract: Processing packets across Mobile Ad hoc Network, Topology control minimize interference among node in a network, increase the network capacity and extend lifetime of the network. Emerging research in mobile ad hoc networks (MANETs) says, there is a growing requirement of quality of service (QoS) in terms of delay. In order to resolve the delay problem, it is essential to consider topology control in delay constrained environment with energy efficient. In this paper, we discuss reduced delay and minimum distributed topology control algorithm for mobile ad hoc networks. In this proposed system, we study on the delay-constrained topology control problem, and take into account delay and energy efficiency. Simulation results are presented demonstrating the effectiveness of this new technique as compared to other approaches to topology control.
